! ==============================================================================
! PARSER: Front end to parser.
!
-! Supplied for use with Inform 6 -- Release 6.12.1 -- Serial number 160605
+! Supplied for use with Inform 6 -- Release 6.12.6 -- Serial number 220219
!
-! Copyright Graham Nelson 1993-2004 and David Griffith 2012-2016
+! Copyright Graham Nelson 1993-2004 and David Griffith 2012-2022
!
! This file is free software: you can redistribute it and/or modify
! it under the terms of the GNU Affero General Public License as
! Include "parser";
! Include "verblib";
! Include "grammar";
+!
+! ------------------------------------------------------------------------------
+! Inclusion of "linklpa" (which defines properties and attributes)
+! Global variables, constants and arrays
+! 1: outside of the parser
+! 2: used within the parser
+! Inclusion of natural language definition file
+! (which creates a compass and direction-objects)
+! Darkness and player objects
+! Definition of grammar token numbering system used by Inform
+!
+! The InformParser object
+! keyboard reading
+! level 0: outer shell, conversation, errors
+! 1: grammar lines
+! 2: tokens
+! 3: object lists
+! 4: scope and ambiguity resolving
+! 5: object comparisons
+! 6: word comparisons
+! 7: reading words and moving tables about
+! pronoun management
+!
+! The InformLibrary object
+! main game loop
+! action processing
+! end of turn sequence
+! scope looping, before/after sequence, sending messages out
+! timers, daemons, time of day, score notification
+! light and darkness
+! changing player personality
+! tracing code (only present if DEBUG is set)
+!
+! Status line printing, menu display
+! Printing object names with articles
+! Miscellaneous utility routines
+! Game banner, "version" verb, run-time errors
! ==============================================================================
System_file;
! ------------------------------------------------------------------------------
#Ifndef VN_1633;
-Message fatalerror "*** Library 6.12.1 needs Inform v6.33 or later to work ***";
+Message fatalerror "*** Library 6.12.x needs Inform v6.33 or later to work ***";
#Endif; ! VN_
-Constant LibSerial "160605";
-Constant LibRelease "6.12.1";
-Constant LIBRARY_VERSION 612;
-Constant Grammar__Version 2;
+Include "version";
Constant BEFORE_PARSER 10;
Constant AFTER_PARSER 20;
Constant HDR_SCREENWCHARS $21; ! byte
Constant HDR_SCREENWUNITS $22; ! word
Constant HDR_SCREENHUNITS $24; ! word
+#Iftrue (#version_number == 6);
+Constant HDR_FONTHUNITS $26; ! byte
+Constant HDR_FONTWUNITS $27; ! byte
+#Ifnot;
Constant HDR_FONTWUNITS $26; ! byte
Constant HDR_FONTHUNITS $27; ! byte
+#Endif;
Constant HDR_ROUTINEOFFSET $28; ! word
Constant HDR_STRINGOFFSET $2A; ! word
Constant HDR_BGCOLOUR $2C; ! byte
Fake_Action PluralFound;
Fake_Action ListMiscellany;
Fake_Action Miscellany;
+Fake_Action RunTimeError;
Fake_Action Prompt;
Fake_Action NotUnderstood;
Fake_Action Going;
! ------------------------------------------------------------------------------
-#Ifdef USE_MODULES;
-Link "parserm";
+#Ifdef COLOR;
+Constant COLOUR;
+#Endif;
+
+#Ifdef COLOUR;
+Global clr_on = 1;
+#Ifnot;
+Global clr_on = 0;
+#Endif;
+
+! ------------------------------------------------------------------------------
+! Global variables and their associated Constant and Array declarations
+! ------------------------------------------------------------------------------
+
+Global location = InformLibrary; ! Must be first global defined
+Global sline1; ! Must be second
+Global sline2; ! Must be third
+ ! (for status line display)
+
+! ------------------------------------------------------------------------------
+! Z-Machine and interpreter issues
+! ------------------------------------------------------------------------------
+
+#Ifdef TARGET_ZCODE;
+Global top_object; ! Largest valid number of any tree object
+! ### these globals are not meaningful... well, maybe standard_interpreter,
+! but I'll decide that later (AP).
+Constant INDIV_PROP_START 64; ! Equivalent of a Glulx constant
+
+#Endif; ! TARGET_ZCODE
+
+Global standard_interpreter; ! The version number of the Z-Machine Standard which the
+ ! interpreter claims to support, in form (upper byte).(lower)
+
+Global undo_flag; ! Can the interpreter provide "undo"?
+Global just_undone; ! Can't have two successive UNDOs
+
+Global transcript_mode; ! true when game scripting is on
+
+#Ifdef TARGET_ZCODE;
+Global xcommsdir; ! true if command recording is on
+#Endif; ! TARGET_ZCODE
+
+#Ifdef TARGET_GLULX;
+Constant GG_MAINWIN_ROCK 201;
+Constant GG_STATUSWIN_ROCK 202;
+Constant GG_QUOTEWIN_ROCK 203;
+Constant GG_SAVESTR_ROCK 301;
+Constant GG_SCRIPTSTR_ROCK 302;
+Constant GG_COMMANDWSTR_ROCK 303;
+Constant GG_COMMANDRSTR_ROCK 304;
+Constant GG_SCRIPTFREF_ROCK 401;
+Array gg_event --> 4;
+#Ifdef VN_1630;
+Array gg_arguments buffer 28;
+#Ifnot;
+Array gg_arguments --> 8;
+#Endif; ! VN_
+Global gg_mainwin = 0;
+Global gg_statuswin = 0;
+Global gg_quotewin = 0;
+Global gg_scriptfref = 0;
+Global gg_scriptstr = 0;
+Global gg_savestr = 0;
+Global gg_commandstr = 0;
+Global gg_command_reading = 0; ! true if gg_commandstr is being replayed
+#Endif; ! TARGET_GLULX
+
+Global gg_statuswin_cursize = 0;
+Global gg_statuswin_size = 1;
+
+! ------------------------------------------------------------------------------
+! Time and score
+! (for linkage reasons, the task_* arrays are created not here but in verblib.h)
+! ------------------------------------------------------------------------------
+
+#Ifndef sys_statusline_flag;
+Global sys_statusline_flag = 0; ! non-zero if status line displays time
+#Endif;
+
+#Ifndef START_MOVE;
+Constant START_MOVE 0; ! Traditionally 0 for Infocom, 1 for Inform
+#Endif;
+
+Global turns = START_MOVE; ! Number of turns of play so far
+Global the_time = NULL; ! Current time (in minutes since midnight)
+Global time_rate = 1; ! How often time is updated
+Global time_step; ! By how much
+
+#Ifndef MAX_TIMERS;
+Constant MAX_TIMERS 32; ! Max number timers/daemons active at once
+#Endif; ! MAX_TIMERS
+Array the_timers --> MAX_TIMERS;
+Global active_timers; ! Number of timers/daemons actives
+
+Global score; ! The current score
+Global last_score; ! Score last turn (for testing for changes)
+Global notify_mode = true; ! Score notification
+Global places_score; ! Contribution to score made by visiting
+Global things_score; ! Contribution made by acquisition
+
+! ------------------------------------------------------------------------------
+! The player
+! ------------------------------------------------------------------------------
+
+Global player; ! Which object the human is playing through
+Global deadflag; ! Normally 0, or false; 1 for dead
+ ! 2 for victorious, and higher numbers
+ ! represent exotic forms of death
+
+! ------------------------------------------------------------------------------
+! Light and room descriptions
+! ------------------------------------------------------------------------------
+
+Global lightflag = true; ! Is there currently light to see by?
+Global real_location; ! When in darkness, location = thedark
+ ! and this holds the real location
+Global prev_location; ! The previous value of real_location
+Global visibility_ceiling; ! Highest object in tree visible from the
+ ! player's point of view (usually the room,
+ ! sometimes darkness, sometimes a closed
+ ! non-transparent container).
+
+Global lookmode = 2; ! 1=brief, 2=verbose, 3=superbrief
+ ! room descriptions
+Global print_player_flag; ! If set, print something like "(as Fred)"
+ ! in room descriptions, to reveal whom the
+ ! player is playing through
+Global lastdesc; ! Value of location at time of most recent
+ ! room description printed out
+
+! ------------------------------------------------------------------------------
+! List writing (style bits are defined as Constants in "verblibm.h")
+! ------------------------------------------------------------------------------
+
+Global c_style; ! Current list-writer style
+Global lt_value; ! Common value of list_together
+Global listing_together; ! Object number of one member of a group
+ ! being listed together
+Global listing_size; ! Size of such a group
+Global wlf_indent; ! Current level of indentation printed by
+ ! WriteListFrom()
+
+Global inventory_stage = 1; ! 1 or 2 according to the context in which
+ ! "invent" routines of objects are called
+Global inventory_style; ! List-writer style currently used while
+ ! printing inventories
+
+Global objects_style; ! List-writer style currently used while
+Global places_style; ! printing objects handled or places visited
+
+! ------------------------------------------------------------------------------
+! Menus and printing
+! ------------------------------------------------------------------------------
+
+Global pretty_flag = true; ! Use character graphics, or plain text?
+Global menu_nesting; ! Level of nesting (0 = root menu)
+Global menu_item; ! These are used in communicating
+Global item_width = 8; ! with the menu-creating routines
+Global item_name = "---";
+
+Global lm_n; ! Parameters used by LibraryMessages
+Global lm_o; ! mechanism
+Global lm_s;
+
+#Ifdef DEBUG;
+Constant DEBUG_MESSAGES $0001;
+Constant DEBUG_ACTIONS $0002;
+Constant DEBUG_TIMERS $0004;
+Constant DEBUG_CHANGES $0008;
+Constant DEBUG_VERBOSE $0080;
+Global debug_flag; ! Bitmap of flags for tracing actions,
+ ! calls to object routines, etc.
+Global x_scope_count; ! Used in printing a list of everything
+#Endif; ! DEBUG ! in scope
+
+! five for colour control
+! see http://www.inform-fiction.org/patches/L61007.html
+! To enable colour define a constant or Global: COLOR or COLOUR
+!Global clr_on; ! has colour been enabled by the player?
+#Ifdef COLOUR;
+Global clr_fg = 1; ! foreground colour
+Global clr_bg = 1; ! background colour
+Global clr_fgstatus = 1; ! foreground colour of statusline
+Global clr_bgstatus = 1; ! background colour of statusline
+#Endif; ! COLOUR
+Global statuswin_current; ! if writing to top window
+
+Constant CLR_CURRENT 0;
+Constant CLR_DEFAULT 1;
+Constant CLR_BLACK 2;
+Constant CLR_RED 3;
+Constant CLR_GREEN 4;
+Constant CLR_YELLOW 5;
+Constant CLR_BLUE 6;
+Constant CLR_MAGENTA 7;
+Constant CLR_CYAN 8;
+Constant CLR_WHITE 9;
+Constant CLR_PURPLE 7;
+Constant CLR_AZURE 8;
+
+#Ifdef TARGET_GLULX;
+Array GlulxColourValues
+ --> (-2)
+ (-1)
+ $000000
+ $EF0000
+ $00D600
+ $EFEF00
+ $006BB5
+ $FF00FF
+ $00EFEF
+ $FFFFFF;
+#Endif; ! TARGET_GLULX
+
+Constant WIN_ALL 0;
+Constant WIN_STATUS 1;
+Constant WIN_MAIN 2;
+
+! ------------------------------------------------------------------------------
+! Action processing
+! ------------------------------------------------------------------------------
+
+Global action; ! Action currently being asked to perform
+Global inp1; ! 0 (nothing), 1 (number) or first noun
+Global inp2; ! 0 (nothing), 1 (number) or second noun
+Global noun; ! First noun or numerical value
+Global second; ! Second noun or numerical value
+
+Global keep_silent; ! If true, attempt to perform the action
+ ! silently (e.g. for implicit takes,
+ ! implicit opening of unlocked doors)
+
+Global reason_code; ! Reason for calling a "life" rule
+ ! (an action or fake such as ##Kiss)
+
+Global receive_action; ! Either ##PutOn or ##Insert, whichever is
+ ! action being tried when an object's
+ ! "before" rule is checking "Receive"
+
+Global no_implicit_actions; ! Don't implicitly do things.
+
+! ==============================================================================
+! Parser variables: first, for communication to the parser
+! ------------------------------------------------------------------------------
+
+Global parser_trace = 0; ! Set this to 1 to make the parser trace
+ ! tokens and lines
+Global parser_action; ! For the use of the parser when calling
+Global parser_one; ! user-supplied routines
+Global parser_two; !
+Array inputobjs --> 16; ! For parser to write its results in
+Global parser_inflection; ! A property (usually "name") to find
+ ! object names in
+Global parser_inflection_func; ! Programmer sets this to true when
+ ! parser_infection is a function
+
+! ------------------------------------------------------------------------------
+! Parser output
+! ------------------------------------------------------------------------------
+
+Global actor; ! Person asked to do something
+Global actors_location; ! Like location, but for the actor
+Global meta; ! Verb is a meta-command (such as "save")
+
+#Ifdef INFIX;
+Global infix_verb; ! Verb is an Infix command
+#Endif;
+
+Array multiple_object --> 64; ! List of multiple parameters
+Global multiflag; ! Multiple-object flag passed to actions
+ ! Also used to prevent misleading MULTI_PE
+Global toomany_flag; ! Flag for "multiple match too large"
+ ! (e.g. if "take all" took over 100 things)
+
+Global special_word; ! Dictionary address for "special" token
+Global special_number; ! Number typed for "special" token
+Global parsed_number; ! For user-supplied parsing routines
+Global consult_from; ! Word that a "consult" topic starts on
+Global consult_words; ! ...and number of words in topic
+Global asking_player; ! True during disambiguation question
+
+! ------------------------------------------------------------------------------
+! Implicit taking
+! ------------------------------------------------------------------------------
+
+Global notheld_mode; ! To do with implicit taking
+Global onotheld_mode; ! "old copy of notheld_mode", ditto
+Global not_holding; ! Object to be automatically taken as an
+ ! implicit command
+Array kept_results --> 16; ! Delayed command (while the take happens)
+
+! ------------------------------------------------------------------------------
+! Error numbers when parsing a grammar line
+! ------------------------------------------------------------------------------
+
+Global etype; ! Error number on current line
+Global best_etype; ! Preferred error number so far
+Global nextbest_etype; ! Preferred one, if ASKSCOPE_PE disallowed
+
+Constant STUCK_PE = 1;
+Constant UPTO_PE = 2;
+Constant NUMBER_PE = 3;
+Constant CANTSEE_PE = 4;
+Constant TOOLIT_PE = 5;
+Constant NOTHELD_PE = 6;
+Constant MULTI_PE = 7;
+Constant MMULTI_PE = 8;
+Constant VAGUE_PE = 9;
+Constant EXCEPT_PE = 10;
+Constant ANIMA_PE = 11;
+Constant VERB_PE = 12;
+Constant SCENERY_PE = 13;
+Constant ITGONE_PE = 14;
+Constant JUNKAFTER_PE = 15;
+Constant TOOFEW_PE = 16;
+Constant NOTHING_PE = 17;
+Constant ASKSCOPE_PE = 18;
+
+! ------------------------------------------------------------------------------
+! Pattern-matching against a single grammar line
+! ------------------------------------------------------------------------------
+
+Array pattern --> 32; ! For the current pattern match
+Global pcount; ! and a marker within it
+Array pattern2 --> 32; ! And another, which stores the best match
+Global pcount2; ! so far
+Constant PATTERN_NULL = $ffff; ! Entry for a token producing no text
+
+Array line_ttype-->32; ! For storing an analysed grammar line
+Array line_tdata-->32;
+Array line_token-->32;
+
+Global parameters; ! Parameters (objects) entered so far
+Global nsns; ! Number of special_numbers entered so far
+Global special_number1; ! First number, if one was typed
+Global special_number2; ! Second number, if two were typed
+
+! ------------------------------------------------------------------------------
+! Inferences and looking ahead
+! ------------------------------------------------------------------------------
+
+Global params_wanted; ! Number of parameters needed
+ ! (which may change in parsing)
+
+Global inferfrom; ! The point from which the rest of the
+ ! command must be inferred
+Global inferword; ! And the preposition inferred
+Global dont_infer; ! Another dull flag
+Global no_infer_message = false; ! Use in ChooseObjects to suppress
+ ! an inference message.
+
+Global action_to_be; ! (If the current line were accepted.)
+Global action_reversed; ! (Parameters would be reversed in order.)
+Global advance_warning; ! What a later-named thing will be
+
+! ------------------------------------------------------------------------------
+! At the level of individual tokens now
+! ------------------------------------------------------------------------------
+
+Global found_ttype; ! Used to break up tokens into type
+Global found_tdata; ! and data (by AnalyseToken)
+Global token_filter; ! For noun filtering by user routines
+
+Global length_of_noun; ! Set by NounDomain to no of words in noun
+
+#Ifdef TARGET_ZCODE;
+Constant REPARSE_CODE = 10000; ! Signals "reparse the text" as a reply
+ ! from NounDomain
+#Ifnot; ! TARGET_GLULX
+Constant REPARSE_CODE = $40000000; ! The parser rather gunkily adds addresses
+ ! to REPARSE_CODE for some purposes and
+ ! expects the result to be greater than
+ ! REPARSE_CODE (signed comparison).
+ ! So Glulx Inform is limited to a single
+ ! gigabyte of storage, for the moment.
+#Endif; ! TARGET_
+
+Global lookahead; ! The token after the one now being matched
+
+Global multi_mode; ! Multiple mode
+Global multi_wanted; ! Number of things needed in multitude
+Global multi_had; ! Number of things actually found
+Global multi_context; ! What token the multi-obj was accepted for
+
+Global indef_mode; ! "Indefinite" mode - ie, "take a brick"
+ ! is in this mode
+Global indef_type; ! Bit-map holding types of specification
+Global indef_wanted; ! Number of items wanted (100 for all)
+Global indef_guess_p; ! Plural-guessing flag
+Global indef_owner; ! Object which must hold these items
+Global indef_cases; ! Possible gender and numbers of them
+Global indef_possambig; ! Has a possibly dangerous assumption
+ ! been made about meaning of a descriptor?
+Global indef_nspec_at; ! Word at which a number like "two" was
+ ! parsed (for backtracking)
+Global allow_plurals; ! Whether plurals presently allowed or not
+
+Global take_all_rule; ! Slightly different rules apply to
+ ! "take all" than other uses of multiple
+ ! objects, to make adjudication produce
+ ! more pragmatically useful results
+ ! (Not a flag: possible values 0, 1, 2)
+
+Global dict_flags_of_noun; ! Of the noun currently being parsed
+ ! (a bitmap in #dict_par1 format)
+Constant DICT_VERB $01;
+Constant DICT_META $02;
+Constant DICT_PLUR $04;
+Constant DICT_PREP $08;
+Constant DICT_X654 $70;
+Constant DICT_NOUN $80;
+
+Global pronoun_word; ! Records which pronoun ("it", "them", ...)
+ ! caused an error
+Global pronoun_obj; ! And what obj it was thought to refer to
+Global pronoun__word; ! Saved value
+Global pronoun__obj; ! Saved value
+
+! ------------------------------------------------------------------------------
+! Searching through scope and parsing "scope=Routine" grammar tokens
+! ------------------------------------------------------------------------------
+
+Constant PARSING_REASON = 0; ! Possible reasons for searching scope
+Constant TALKING_REASON = 1;
+Constant EACH_TURN_REASON = 2;
+Constant REACT_BEFORE_REASON = 3;
+Constant REACT_AFTER_REASON = 4;
+Constant LOOPOVERSCOPE_REASON = 5;
+Constant TESTSCOPE_REASON = 6;
+
+Global scope_reason = PARSING_REASON; ! Current reason for searching scope
+
+Global scope_token; ! For "scope=Routine" grammar tokens
+Global scope_error;
+Global scope_stage; ! 1, 2 then 3
+
+Global ats_flag = 0; ! For AddToScope routines
+Global ats_hls; !
+
+Global placed_in_flag; ! To do with PlaceInScope
+
+! ------------------------------------------------------------------------------
+! The match list of candidate objects for a given token
+! ------------------------------------------------------------------------------
+
+Constant MATCH_LIST_SIZE = 64;
+Array match_list --> MATCH_LIST_SIZE; ! An array of matched objects so far
+Array match_classes --> MATCH_LIST_SIZE; ! An array of equivalence classes for them
+Array match_scores --> MATCH_LIST_SIZE; ! An array of match scores for them
+Global number_matched; ! How many items in it? (0 means none)
+Global number_of_classes; ! How many equivalence classes?
+Global match_length; ! How many words long are these matches?
+Global saved_ml;
+Global match_from; ! At what word of the input do they begin?
+Global bestguess_score; ! What did the best-guess object score?
+
+! ------------------------------------------------------------------------------
+! Low level textual manipulation
+! ------------------------------------------------------------------------------
+
+#Ifdef TARGET_ZCODE;
+
+! 'buffer' holds the input line as typed by the player
+!
+! buffer->0 INPUT_BUFFER_LEN - WORDSIZE
+! buffer->1 Number of characters input by player
+! buffer->2 ... buffer->121 The actual characters
+! buffer->122 Spare byte to allow for 'terp bugs
+!
+! 'parse' holds the result of parsing that line into dictionary words
+!
+! parse->0 MAX_BUFFER_WORDS
+! parse->1 Number of words input by player
+!
+! parse-->1 Dictionary addr of first input word
+! parse->4 Number of characters in the word
+! parse->5 Start position in 'buffer' of the word
+!
+! parse-->3 parse->8,9 Same data for second input word
+! ...
+! parse-->29 parse->60,61 Same data for MAX_BUFFER_WORDS input word
+! parse->62,63,64 Spare bytes (not sure why)
+
+
+Constant INPUT_BUFFER_LEN = WORDSIZE + 120; ! 120 is limit on input chars
+Constant MAX_BUFFER_WORDS = 15; ! Limit on input words
+
+Array buffer -> INPUT_BUFFER_LEN + 1; ! For main line of input
+Array buffer2 -> INPUT_BUFFER_LEN + 1; ! For supplementary questions
+Array buffer3 -> INPUT_BUFFER_LEN + 1; ! Retaining input for "AGAIN"
+
+#Ifdef VN_1630;
+Array parse buffer (MAX_BUFFER_WORDS * 4) + 3; ! Parsed data from 'buffer'
+Array parse2 buffer (MAX_BUFFER_WORDS * 4) + 3; ! Parsed data from 'buffer2'
#Ifnot;
-Include "parserm";
-#Endif; ! USE_MODULES
+Array parse -> 2 + (MAX_BUFFER_WORDS * 4) + 3;
+Array parse2 -> 2 + (MAX_BUFFER_WORDS * 4) + 3;
+#Endif; ! VN_
+
+#Ifnot; ! TARGET_GLULX
+
+! 'buffer' holds the input line as typed by the player
+!
+! buffer-->0 Number of characters input by player
+! buffer->4 ... buffer->259 The actual characters
+!
+! 'parse' holds the result of parsing that line into dictionary words
+!
+! parse-->0 Number of words input by player
+!
+! parse-->1 Dictionary addr of first input word
+! parse-->2 Number of characters in the word
+! parse-->3 Start position in 'buffer' of the word
+!
+! parse-->4,5,6 Same data for second input word
+! ...
+! parse-->58,59,60 Same data for MAX_BUFFER_WORDS input word
+
+Constant INPUT_BUFFER_LEN = WORDSIZE + 256; ! 256 is limit on input chars
+Constant MAX_BUFFER_WORDS = 20; ! Limit on input words
+
+#Ifdef VN_1630;
+Array buffer buffer (INPUT_BUFFER_LEN-WORDSIZE); ! For main line of input
+Array buffer2 buffer (INPUT_BUFFER_LEN-WORDSIZE); ! For supplementary questions
+Array buffer3 buffer (INPUT_BUFFER_LEN-WORDSIZE); ! Retaining input for "AGAIN"
+#Ifnot;
+Array buffer -> INPUT_BUFFER_LEN;
+Array buffer2 -> INPUT_BUFFER_LEN;
+Array buffer3 -> INPUT_BUFFER_LEN;
+#Endif; ! VN_
+Array parse --> 1 + (MAX_BUFFER_WORDS * 3); ! Parsed data from 'buffer'
+Array parse2 --> 1 + (MAX_BUFFER_WORDS * 3); ! Parsed data from 'buffer2'
+
+#Endif; ! TARGET_
+
+Constant comma_word = 'comma,'; ! An "untypeable word" used to substitute
+ ! for commas in parse buffers
+
+Global wn; ! Word number within "parse" (from 1)
+Global num_words; ! Number of words typed
+Global num_desc; ! Number of descriptors typed
+Global verb_word; ! Verb word (eg, take in "take all" or
+ ! "dwarf, take all") - address in dict
+Global verb_wordnum; ! its number in typing order (eg, 1 or 3)
+Global usual_grammar_after; ! Point from which usual grammar is parsed (it may vary from the
+ ! above if user's routines match multi-word verbs)
+
+Global oops_from; ! The "first mistake" word number
+Global saved_oops; ! Used in working this out
+
+Constant OOPS_WORKSPACE_LEN 64; ! Used temporarily by "oops" routine
+Array oops_workspace -> OOPS_WORKSPACE_LEN;
+
+Global held_back_mode; ! Flag: is there some input from last time
+Global hb_wn; ! left over? (And a save value for wn.)
+ ! (Used for full stops and "then".)
+
+Global caps_mode; ! Keep track of (The) with 'proper' caps
+Global print_anything_result; ! Return value from a PrintAny() routine
+Global initial_lookmode; ! Default, or set in Initialise()
+Global before_first_turn; ! True until after initial LOOK
+
+! ----------------------------------------------------------------------------
+
+Array PowersOfTwo_TB ! Used in converting case numbers to case
+ --> $$100000000000 ! bitmaps
+ $$010000000000
+ $$001000000000
+ $$000100000000
+ $$000010000000
+ $$000001000000
+ $$000000100000
+ $$000000010000
+ $$000000001000
+ $$000000000100
+ $$000000000010
+ $$000000000001;
+
+! ============================================================================
+! Constants, and one variable, needed for the language definition file
+! ----------------------------------------------------------------------------
+
+Constant POSSESS_PK = $100;
+Constant DEFART_PK = $101;
+Constant INDEFART_PK = $102;
+Global short_name_case;
+
+Global dict_start;
+Global dict_entry_size;
+Global dict_end;
+
+! ----------------------------------------------------------------------------
+
+Include "language__"; ! The natural language definition, whose filename is taken from
+ ! the ICL language_name variable
+
+! ----------------------------------------------------------------------------
+
+#Ifndef LanguageCases;
+Constant LanguageCases = 1;
+#Endif; ! LanguageCases
+
+! ------------------------------------------------------------------------------
+! Pronouns support for the cruder (library 6/2 and earlier) version:
+! only needed in English
+! ------------------------------------------------------------------------------
+
+#Ifdef EnglishNaturalLanguage;
+Global itobj = NULL; ! The object which is currently "it"
+Global himobj = NULL; ! The object which is currently "him"
+Global herobj = NULL; ! The object which is currently "her"
+
+Global old_itobj = NULL; ! The object which is currently "it"
+Global old_himobj = NULL; ! The object which is currently "him"
+Global old_herobj = NULL; ! The object which is currently "her"
+#Endif; ! EnglishNaturalLanguage
+
+! ============================================================================
+! For present and past tenses
+! ----------------------------------------------------------------------------
+Constant PRESENT_TENSE 0;
+Constant PAST_TENSE 1;
+
+! ============================================================================
+! For InformLibrary.actor_act() to control what happens when it aborts.
+! ----------------------------------------------------------------------------
+Constant ACTOR_ACT_OK 0;
+Constant ACTOR_ACT_ABORT_NOTUNDERSTOOD 1;
+Constant ACTOR_ACT_ABORT_ORDER 2;
+
+! ============================================================================
+! "Darkness" is not really a place: but it has to be an object so that the
+! location-name on the status line can be "Darkness".
+! ----------------------------------------------------------------------------
+
+Object thedark "(darkness object)"
+ with initial 0,
+ short_name DARKNESS__TX,
+ description [; return L__M(##Miscellany, 17); ];
+
+! If you want to use the third-person of the narrative voice, you will
+! need to replace this selfobj with your own.
+Class SelfClass
+ with name ',a' ',b' ',c' ',d' ',e',
+ short_name YOURSELF__TX,
+ description [; return L__M(##Miscellany, 19); ],
+ before NULL,
+ after NULL,
+ life NULL,
+ each_turn NULL,
+ time_out NULL,
+ describe NULL,
+ article THE__TX,
+ add_to_scope 0,
+ capacity 100,
+ parse_name 0,
+ orders 0,
+ number 0,
+ narrative_voice 2,
+ narrative_tense PRESENT_TENSE,
+ nameless true,
+ posture 0,
+ before_implicit [;Take: return 2;],
+ has concealed animate proper transparent;
+
+SelfClass selfobj "(self object)";
+
+! ============================================================================
+! The definition of the token-numbering system used by Inform.
+! ----------------------------------------------------------------------------
+
+Constant ILLEGAL_TT = 0; ! Types of grammar token: illegal
+Constant ELEMENTARY_TT = 1; ! (one of those below)
+Constant PREPOSITION_TT = 2; ! e.g. 'into'
+Constant ROUTINE_FILTER_TT = 3; ! e.g. noun=CagedCreature
+Constant ATTR_FILTER_TT = 4; ! e.g. edible
+Constant SCOPE_TT = 5; ! e.g. scope=Spells
+Constant GPR_TT = 6; ! a general parsing routine
+
+Constant NOUN_TOKEN = 0; ! The elementary grammar tokens, and
+Constant HELD_TOKEN = 1; ! the numbers compiled by Inform to
+Constant MULTI_TOKEN = 2; ! encode them
+Constant MULTIHELD_TOKEN = 3;
+Constant MULTIEXCEPT_TOKEN = 4;
+Constant MULTIINSIDE_TOKEN = 5;
+Constant CREATURE_TOKEN = 6;
+Constant SPECIAL_TOKEN = 7;
+Constant NUMBER_TOKEN = 8;
+Constant TOPIC_TOKEN = 9;
+
+
+Constant GPR_FAIL = -1; ! Return values from General Parsing
+Constant GPR_PREPOSITION = 0; ! Routines
+Constant GPR_NUMBER = 1;
+Constant GPR_MULTIPLE = 2;
+Constant GPR_REPARSE = REPARSE_CODE;
+Constant GPR_NOUN = $ff00;
+Constant GPR_HELD = $ff01;
+Constant GPR_MULTI = $ff02;
+Constant GPR_MULTIHELD = $ff03;
+Constant GPR_MULTIEXCEPT = $ff04;
+Constant GPR_MULTIINSIDE = $ff05;
+Constant GPR_CREATURE = $ff06;
+
+Constant ENDIT_TOKEN = 15; ! Value used to mean "end of grammar line"
+
+#Iftrue (Grammar__Version == 1);
+
+[ AnalyseToken token m;
+ found_tdata = token;
+ if (token < 0) { found_ttype = ILLEGAL_TT; return; }
+ if (token <= 8) { found_ttype = ELEMENTARY_TT; return; }
+ if (token < 15) { found_ttype = ILLEGAL_TT; return; }
+ if (token == 15) { found_ttype = ELEMENTARY_TT; return; }
+ if (token < 48) { found_ttype = ROUTINE_FILTER_TT;
+ found_tdata = token - 16;
+ return;
+ }
+ if (token < 80) { found_ttype = GPR_TT;
+ found_tdata = #preactions_table-->(token-48);
+ return;
+ }
+ if (token < 128) { found_ttype = SCOPE_TT;
+ found_tdata = #preactions_table-->(token-80);
+ return;
+ }
+ if (token < 180) { found_ttype = ATTR_FILTER_TT;
+ found_tdata = token - 128;
+ return;
+ }
+
+ found_ttype = PREPOSITION_TT;
+ m = #adjectives_table;
+ for (::) {
+ if (token == m-->1) { found_tdata = m-->0; return; }
+ m = m+4;
+ }
+ m = #adjectives_table; RunTimeError(1);
+ found_tdata = m;
+];
+
+[ UnpackGrammarLine line_address i m;
+ for (i=0 : i<32 : i++) {
+ line_token-->i = ENDIT_TOKEN;
+ line_ttype-->i = ELEMENTARY_TT;
+ line_tdata-->i = ENDIT_TOKEN;
+ }
+ for (i=0 : i<=5 : i++) {
+ line_token-->i = line_address->(i+1);
+ AnalyseToken(line_token-->i);
+ if ((found_ttype == ELEMENTARY_TT) && (found_tdata == NOUN_TOKEN)
+ && (m == line_address->0)) {
+ line_token-->i = ENDIT_TOKEN;
+ break;
+ }
+ line_ttype-->i = found_ttype;
+ line_tdata-->i = found_tdata;
+ if (found_ttype ~= PREPOSITION_TT) m++;
+ }
+ action_to_be = line_address->7;
+ action_reversed = false;
+ params_wanted = line_address->0;
+ return line_address + 8;
+];
+
+#Ifnot; ! Grammar__Version == 2
+
+[ AnalyseToken token;
+ if (token == ENDIT_TOKEN) {
+ found_ttype = ELEMENTARY_TT;
+ found_tdata = ENDIT_TOKEN;
+ return;
+ }
+ found_ttype = (token->0) & $$1111;
+ found_tdata = (token+1)-->0;
+];
+
+#Ifdef TARGET_ZCODE;
+
+[ UnpackGrammarLine line_address i;
+ for (i=0 : i<32 : i++) {
+ line_token-->i = ENDIT_TOKEN;
+ line_ttype-->i = ELEMENTARY_TT;
+ line_tdata-->i = ENDIT_TOKEN;
+ }
+ action_to_be = 256*(line_address->0) + line_address->1;
+ action_reversed = ((action_to_be & $400) ~= 0);
+ action_to_be = action_to_be & $3ff;
+ line_address--;
+ params_wanted = 0;
+ for (i=0 : : i++) {
+ line_address = line_address + 3;
+ if (line_address->0 == ENDIT_TOKEN) break;
+ line_token-->i = line_address;
+ AnalyseToken(line_address);
+ if (found_ttype ~= PREPOSITION_TT) params_wanted++;
+ line_ttype-->i = found_ttype;
+ line_tdata-->i = found_tdata;
+ }
+ return line_address + 1;
+];
+
+#Ifnot; ! TARGET_GLULX
+
+[ UnpackGrammarLine line_address i;
+ for (i=0 : i<32 : i++) {
+ line_token-->i = ENDIT_TOKEN;
+ line_ttype-->i = ELEMENTARY_TT;
+ line_tdata-->i = ENDIT_TOKEN;
+ }
+ @aloads line_address 0 action_to_be;
+ action_reversed = (((line_address->2) & 1) ~= 0);
+ line_address = line_address - 2;
+ params_wanted = 0;
+ for (i=0 : : i++) {
+ line_address = line_address + 5;
+ if (line_address->0 == ENDIT_TOKEN) break;
+ line_token-->i = line_address;
+ AnalyseToken(line_address);
+ if (found_ttype ~= PREPOSITION_TT) params_wanted++;
+ line_ttype-->i = found_ttype;
+ line_tdata-->i = found_tdata;
+ }
+ return line_address + 1;
+];
+
+#Endif; ! TARGET_
+#Endif; ! Grammar__Version
+
+! To protect against a bug in early versions of the "Zip" interpreter:
+! Of course, in Glulx, this routine actually performs work.
+
+#Ifdef TARGET_ZCODE;
+
+[ Tokenise__ b p; b->(2 + b->1) = 0; @tokenise b p; ];
+
+#Ifnot; ! TARGET_GLULX
+
+Array gg_tokenbuf -> DICT_WORD_SIZE;
+
+[ GGWordCompare str1 str2 ix jx;
+ for (ix=0 : ix<DICT_WORD_SIZE : ix++) {
+ jx = (str1->ix) - (str2->ix);
+ if (jx ~= 0) return jx;
+ }
+ return 0;
+];
+
+[ Tokenise__ buf tab
+ cx numwords len bx ix wx wpos wlen val res dictlen entrylen;
+ len = buf-->0;
+ buf = buf+WORDSIZE;
+
+ ! First, split the buffer up into words. We use the standard Infocom
+ ! list of word separators (comma, period, double-quote).
+
+ cx = 0;
+ numwords = 0;
+ while (cx < len) {
+ while (cx < len && buf->cx == ' ') cx++;
+ if (cx >= len) break;
+ bx = cx;
+ if (buf->cx == '.' or ',' or '"') cx++;
+ else {
+ while (cx < len && buf->cx ~= ' ' or '.' or ',' or '"') cx++;
+ }
+ tab-->(numwords*3+2) = (cx-bx);
+ tab-->(numwords*3+3) = WORDSIZE+bx;
+ numwords++;
+ if (numwords >= MAX_BUFFER_WORDS) break;
+ }
+ tab-->0 = numwords;
+
+ ! Now we look each word up in the dictionary.
+
+ dictlen = #dictionary_table-->0;
+ entrylen = DICT_WORD_SIZE + 7;
+
+ for (wx=0 : wx<numwords : wx++) {
+ wlen = tab-->(wx*3+2);
+ wpos = tab-->(wx*3+3);
+
+ ! Copy the word into the gg_tokenbuf array, clipping to DICT_WORD_SIZE
+ ! characters and lower case.
+ if (wlen > DICT_WORD_SIZE) wlen = DICT_WORD_SIZE;
+ cx = wpos - WORDSIZE;
+ for (ix=0 : ix<wlen : ix++) gg_tokenbuf->ix = glk_char_to_lower(buf->(cx+ix));
+ for (: ix<DICT_WORD_SIZE : ix++) gg_tokenbuf->ix = 0;
+
+ val = #dictionary_table + WORDSIZE;
+ @binarysearch gg_tokenbuf DICT_WORD_SIZE val entrylen dictlen 1 1 res;
+ tab-->(wx*3+1) = res;
+ }
+];
+
+#Endif; ! TARGET_
+
+! ============================================================================
+! The InformParser object abstracts the front end of the parser.
+!
+! InformParser.parse_input(results)
+! returns only when a sensible request has been made, and puts into the
+! "results" buffer:
+!
+! --> 0 = The action number
+! --> 1 = Number of parameters
+! --> 2, 3, ... = The parameters (object numbers), but
+! 0 means "put the multiple object list here"
+! 1 means "put one of the special numbers here"
+!
+! ----------------------------------------------------------------------------
+
+Object InformParser "(Inform Parser)"
+ with parse_input [ results; Parser__parse(results); ],
+ has proper;
+
+! ----------------------------------------------------------------------------
+! The Keyboard routine actually receives the player's words,
+! putting the words in "a_buffer" and their dictionary addresses in
+! "a_table". It is assumed that the table is the same one on each
+! (standard) call.
+!
+! It can also be used by miscellaneous routines in the game to ask
+! yes-no questions and the like, without invoking the rest of the parser.
+!
+! Return the number of words typed
+! ----------------------------------------------------------------------------
+
+#Ifdef TARGET_ZCODE;
+
+[ GetNthChar a_buffer n i;
+ for (i = 0: a_buffer->(2+i) == ' ': i++) {
+ if (i > a_buffer->(1)) return false;
+ }
+ return a_buffer->(2+i+n);
+];
+
+[ KeyboardPrimitive a_buffer a_table;
+ read a_buffer a_table;
+
+ #Iftrue (#version_number == 6);
+ @output_stream -1;
+ @loadb a_buffer 1 -> sp;
+ @add a_buffer 2 -> sp;
+ @print_table sp sp;
+ new_line;
+ @output_stream 1;
+ #Endif;
+];
+
+[ KeyCharPrimitive win key;
+ if (win) @set_window win;
+ @read_char 1 -> key;
+ return key;
+];
+
+[ KeyTimerInterrupt;
+ rtrue;
+];
+
+[ KeyDelay tenths key;
+ @read_char 1 tenths KeyTimerInterrupt -> key;
+ return key;
+];
+
+#Ifnot; ! TARGET_GLULX
+
+[ GetNthChar a_buffer n i;
+ for (i = 0: a_buffer->(4+i) == ' ': i++) {
+ if (i > a_buffer->(1)) return false;
+ }
+ return a_buffer->(4+i+n);
+];
+
+[ KeyCharPrimitive win nostat done res ix jx ch;
+ jx = ch; ! squash compiler warnings
+ if (win == 0) win = gg_mainwin;
+ if (gg_commandstr ~= 0 && gg_command_reading ~= false) {
+ ! get_line_stream
+ done = glk_get_line_stream(gg_commandstr, gg_arguments, 31);
+ if (done == 0) {
+ glk_stream_close(gg_commandstr, 0);
+ gg_commandstr = 0;
+ gg_command_reading = false;
+ ! fall through to normal user input.
+ }
+ else {
+ ! Trim the trailing newline
+ if (gg_arguments->(done-1) == 10) done = done-1;
+ res = gg_arguments->0;
+ if (res == '\') {
+ res = 0;
+ for (ix=1 : ix<done : ix++) {
+ ch = gg_arguments->ix;
+ if (ch >= '0' && ch <= '9') {
+ @shiftl res 4 res;
+ res = res + (ch-'0');
+ }
+ else if (ch >= 'a' && ch <= 'f') {
+ @shiftl res 4 res;
+ res = res + (ch+10-'a');
+ }
+ else if (ch >= 'A' && ch <= 'F') {
+ @shiftl res 4 res;
+ res = res + (ch+10-'A');
+ }
+ }
+ }
+ jump KCPContinue;
+ }
+ }
+ done = false;
+ glk_request_char_event(win);
+ while (~~done) {
+ glk_select(gg_event);
+ switch (gg_event-->0) {
+ 5: ! evtype_Arrange
+ if (nostat) {
+ glk_cancel_char_event(win);
+ res = $80000000;
+ done = true;
+ break;
+ }
+ DrawStatusLine();
+ 2: ! evtype_CharInput
+ if (gg_event-->1 == win) {
+ res = gg_event-->2;
+ done = true;
+ }
+ }
+ ix = HandleGlkEvent(gg_event, 1, gg_arguments);
+ if (ix == 0) ix = LibraryExtensions.RunWhile(ext_handleglkevent, 0, gg_event, 1, gg_arguments);
+ if (ix == 2) {
+ res = gg_arguments-->0;
+ done = true;
+ }
+ else if (ix == -1) {
+ done = false;
+ }
+ }
+ if (gg_commandstr ~= 0 && gg_command_reading == false) {
+ if (res < 32 || res >= 256 || (res == '\' or ' ')) {
+ glk_put_char_stream(gg_commandstr, '\');
+ done = 0;
+ jx = res;
+ for (ix=0 : ix<8 : ix++) {
+ @ushiftr jx 28 ch;
+ @shiftl jx 4 jx;
+ ch = ch & $0F;
+ if (ch ~= 0 || ix == 7) done = 1;
+ if (done) {
+ if (ch >= 0 && ch <= 9) ch = ch + '0';
+ else ch = (ch - 10) + 'A';
+ glk_put_char_stream(gg_commandstr, ch);
+ }
+ }
+ }
+ else {
+ glk_put_char_stream(gg_commandstr, res);
+ }
+ glk_put_char_stream(gg_commandstr, 10);
+ }
+ .KCPContinue;
+ return res;
+];
+
+[ KeyDelay tenths key done ix;
+ glk_request_char_event(gg_mainwin);
+ glk_request_timer_events(tenths*100);
+ while (~~done) {
+ glk_select(gg_event);
+ ix = HandleGlkEvent(gg_event, 1, gg_arguments);
+ if (ix == 0) ix = LibraryExtensions.RunWhile(ext_handleglkevent, 0, gg_event, 1, gg_arguments);
+ if (ix == 2) {
+ key = gg_arguments-->0;
+ done = true;
+ }
+ else if (ix >= 0 && gg_event-->0 == 1 or 2) {
+ key = gg_event-->2;
+ done = true;
+ }
+ }
+ glk_cancel_char_event(gg_mainwin);
+ glk_request_timer_events(0);
+ return key;
+];
+
+[ KeyboardPrimitive a_buffer a_table done ix;
+ if (gg_commandstr ~= 0 && gg_command_reading ~= false) {
+ ! get_line_stream
+ done = glk_get_line_stream(gg_commandstr, a_buffer+WORDSIZE, (INPUT_BUFFER_LEN-WORDSIZE)-1);
+ if (done == 0) {
+ glk_stream_close(gg_commandstr, 0);
+ gg_commandstr = 0;
+ gg_command_reading = false;
+ ! L__M(##CommandsRead, 5); would come after prompt
+ ! fall through to normal user input.
+ }
+ else {
+ ! Trim the trailing newline
+ if ((a_buffer+WORDSIZE)->(done-1) == 10) done = done-1;
+ a_buffer-->0 = done;
+ glk_set_style(style_Input);
+ glk_put_buffer(a_buffer+WORDSIZE, done);
+ glk_set_style(style_Normal);
+ print "^";
+ jump KPContinue;
+ }
+ }
+ done = false;
+ glk_request_line_event(gg_mainwin, a_buffer+WORDSIZE, INPUT_BUFFER_LEN-WORDSIZE, 0);
+ while (~~done) {
+ glk_select(gg_event);
+ switch (gg_event-->0) {
+ 5: ! evtype_Arrange
+ DrawStatusLine();
+ 3: ! evtype_LineInput
+ if (gg_event-->1 == gg_mainwin) {
+ a_buffer-->0 = gg_event-->2;
+ done = true; }
+ }
+ ix = HandleGlkEvent(gg_event, 0, a_buffer);
+ if (ix == 0) ix = LibraryExtensions.RunWhile(ext_handleglkevent, 0, gg_event, 0, a_buffer);
+ if (ix == 2) done = true;
+ else if (ix == -1) done = false;
+ }
+ if (gg_commandstr ~= 0 && gg_command_reading == false) {
+ ! put_buffer_stream
+
+ glk_put_buffer_stream(gg_commandstr, a_buffer+WORDSIZE, a_buffer-->0);
+ glk_put_char_stream(gg_commandstr, 10);
+ }
+ .KPContinue;
+ Tokenise__(a_buffer,a_table);
+ ! It's time to close any quote window we've got going.
+ if (gg_quotewin) {
+ glk_window_close(gg_quotewin, 0);
+ gg_quotewin = 0;
+ }
+];
+
+#Endif; ! TARGET_
+
+[ Keyboard a_buffer a_table nw i w w2 x1 x2;
+ DisplayStatus();
+
+ .FreshInput;
+
+ ! Save the start of the buffer, in case "oops" needs to restore it
+ ! to the previous time's buffer
+
+ for (i=0 : i<OOPS_WORKSPACE_LEN : i++) oops_workspace->i = a_buffer->i;
+
+ ! In case of an array entry corruption that shouldn't happen, but would be
+ ! disastrous if it did:
+
+ #Ifdef TARGET_ZCODE;
+ a_buffer->0 = INPUT_BUFFER_LEN - WORDSIZE;
+ a_table->0 = MAX_BUFFER_WORDS; ! Allow to split input into this many words
+ #Endif; ! TARGET_
+
+ ! Print the prompt, and read in the words and dictionary addresses
+
+ L__M(##Prompt);
+ if (AfterPrompt() == 0) LibraryExtensions.RunAll(ext_afterprompt);
+ #IfV5;
+ DrawStatusLine();
+ #Endif; ! V5
+
+ KeyboardPrimitive(a_buffer, a_table);
+ nw = NumberWords(a_table);
+
+ ! If the line was blank, get a fresh line
+ if (nw == 0) {
+ L__M(##Miscellany, 10);
+ jump FreshInput;
+ }
+
+ ! Unless the opening word was "oops", return
+ ! Conveniently, a_table-->1 is the first word in both ZCODE and GLULX.
+
+ w = a_table-->1;
+ if (w == OOPS1__WD or OOPS2__WD or OOPS3__WD) jump DoOops;
+
+ if (a_buffer->WORDSIZE == COMMENT_CHARACTER) {
+ #Ifdef TARGET_ZCODE;
+ if ((HDR_GAMEFLAGS-->0) & $0001 || xcommsdir)
+ L__M(##Miscellany, 54);
+ else L__M(##Miscellany, 55);
+ #Ifnot; ! TARGET_GLULX
+ if (gg_scriptstr || gg_commandstr) L__M(##Miscellany, 54);
+ else L__M(##Miscellany, 55);
+ #Endif; ! TARGET_
+
+ jump FreshInput;
+ }
+
+ #IfV5;
+ ! Undo handling
+
+ if ((w == UNDO1__WD or UNDO2__WD or UNDO3__WD) && (nw==1)) {
+ i = PerformUndo();
+ if (i == 0) jump FreshInput;
+ }
+ #Ifdef TARGET_ZCODE;
+ @save_undo i;
+ #Ifnot; ! TARGET_GLULX
+ @saveundo i;
+ if (i == -1) {
+ GGRecoverObjects();
+ i = 2;
+ }
+ else i = (~~i);
+ #Endif; ! TARGET_
+ just_undone = 0;
+ undo_flag = 2;
+ if (i == -1) undo_flag = 0;
+ if (i == 0) undo_flag = 1;
+ if (i == 2) {
+ RestoreColours();
+ #Ifdef TARGET_ZCODE;
+ style bold;
+ #Ifnot; ! TARGET_GLULX
+ glk_set_style(style_Subheader);
+ #Endif; ! TARGET_
+ print (name) location, "^";
+ #Ifdef TARGET_ZCODE;
+ style roman;
+ #Ifnot; ! TARGET_GLULX
+ glk_set_style(style_Normal);
+ #Endif; ! TARGET_
+ L__M(##Miscellany, 13);
+ just_undone = 1;
+ jump FreshInput;
+ }
+ #Endif; ! V5
+
+ return nw;
+
+ .DoOops;
+ if (oops_from == 0) {
+ L__M(##Miscellany, 14);
+ jump FreshInput;
+ }
+ if (nw == 1) {
+ L__M(##Miscellany, 15);
+ jump FreshInput;
+ }
+ if (nw > 2) {
+ L__M(##Miscellany, 16);
+ jump FreshInput;
+ }
+
+ ! So now we know: there was a previous mistake, and the player has
+ ! attempted to correct a single word of it.
+
+ for (i=0 : i<INPUT_BUFFER_LEN : i++) buffer2->i = a_buffer->i;
+ #Ifdef TARGET_ZCODE;
+ x1 = a_table->9; ! Start of word following "oops"
+ x2 = a_table->8; ! Length of word following "oops"
+ #Ifnot; ! TARGET_GLULX
+ x1 = a_table-->6; ! Start of word following "oops"
+ x2 = a_table-->5; ! Length of word following "oops"
+ #Endif; ! TARGET_
+
+ ! Repair the buffer to the text that was in it before the "oops"
+ ! was typed:
+
+ for (i=0 : i < OOPS_WORKSPACE_LEN : i++) a_buffer->i = oops_workspace->i;
+ Tokenise__(a_buffer, a_table);
+
+ ! Work out the position in the buffer of the word to be corrected:
+
+ #Ifdef TARGET_ZCODE;
+ w = a_table->(4*oops_from + 1); ! Start of word to go
+ w2 = a_table->(4*oops_from); ! Length of word to go
+ #Ifnot; ! TARGET_GLULX
+ w = a_table-->(3*oops_from); ! Start of word to go
+ w2 = a_table-->(3*oops_from - 1); ! Length of word to go
+ #Endif; ! TARGET_
+
+#Ifdef OOPS_CHECK;
+ print "[~";
+ for (i=0 : i<w2 : i++) for (i=0 : i<w2 : i++) print (char)a_buffer->(i+w);
+ print "~ --> ~";
+#Endif;
+
+ ! Write spaces over the word to be corrected:
+
+ for (i=0 : i<w2 : i++) a_buffer->(i+w) = ' ';
+
+ if (w2 < x2) {
+ ! If the replacement is longer than the original, move up...
+ for (i=INPUT_BUFFER_LEN-1 : i>=w+x2 : i--)
+ a_buffer->i = a_buffer->(i-x2+w2);
+
+ ! ...increasing buffer size accordingly.
+ SetKeyBufLength(GetKeyBufLength(a_buffer) + (x2-w2), a_buffer);
+ }
+
+ ! Write the correction in:
+
+ for (i=0 : i<x2 : i++) {
+ a_buffer->(i+w) = buffer2->(i+x1);
+#Ifdef OOPS_CHECK;
+ print (char) buffer2->(i+x1);
+#Endif;
+ }
+
+#Ifdef OOPS_CHECK;
+ print "~]^^";
+#Endif;
+
+ Tokenise__(a_buffer, a_table);
+ nw=NumberWords(a_table);
+
+! saved_ml = 0;
+ return nw;
+]; ! end of Keyboard
+
+[ PerformUndo i;
+ if (turns == START_MOVE) { L__M(##Miscellany, 11); return 0; }
+ if (undo_flag == 0) { L__M(##Miscellany, 6); return 0; }
+ if (undo_flag == 1) { L__M(##Miscellany, 7); return 0; }
+ #Ifdef TARGET_ZCODE;
+ @restore_undo i;
+ #Ifnot; ! TARGET_GLULX
+ @restoreundo i;
+ i = (~~i);
+ #Endif; ! TARGET_
+ if (i == 0) { L__M(##Miscellany, 7); return 0; }
+ L__M(##Miscellany, 6);
+ return 1;
+];
+
+! ==========================
+! Taken from I7's Parser.i6t
+! ==========================
+
+[ DictionaryWordToVerbNum dword verbnum;
+#Ifdef TARGET_ZCODE;
+ verbnum = $ff-(dword->#dict_par2);
+#Ifnot; ! GLULX
+ dword = dword + #dict_par2 - 1;
+ @aloads dword 0 verbnum;
+ verbnum = $ffff-verbnum;
+#Endif;
+ return verbnum;
+];
+
+! ==========================
+
+
+! ----------------------------------------------------------------------------
+! To simplify the picture a little, a rough map of the main routine:
+!
+! (A) Get the input, do "oops" and "again"
+! (B) Is it a direction, and so an implicit "go"? If so go to (K)
+! (C) Is anyone being addressed?
+! (D) Get the verb: try all the syntax lines for that verb
+! (E) Break down a syntax line into analysed tokens
+! (F) Look ahead for advance warning for multiexcept/multiinside
+! (G) Parse each token in turn (calling ParseToken to do most of the work)
+! (H) Cheaply parse otherwise unrecognised conversation and return
+! (I) Print best possible error message
+! (J) Retry the whole lot
+! (K) Last thing: check for "then" and further instructions(s), return.
+!
+! The strategic points (A) to (K) are marked in the commentary.
+!
+! Note that there are three different places where a return can happen.
+! ----------------------------------------------------------------------------
+
+[ Parser__parse results syntax line num_lines line_address i j k
+ token l m line_etype vw;
+
+ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+ !
+ ! A: Get the input, do "oops" and "again"
+ !
+ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+ ! Firstly, in "not held" mode, we still have a command left over from last
+ ! time (eg, the user typed "eat biscuit", which was parsed as "take biscuit"
+ ! last time, with "eat biscuit" tucked away until now). So we return that.
+
+ if (notheld_mode == 1) {
+ for (i=0 : i<8 : i++) results-->i = kept_results-->i;
+ notheld_mode = 0;
+ rtrue;
+ }
+
+ if (held_back_mode ~= 0) {
+ held_back_mode = 0;
+ Tokenise__(buffer, parse);
+ jump ReParse;
+ }
+
+ .ReType;
+
+ Keyboard(buffer, parse);
+
+#Ifdef INFIX;
+ ! An Infix verb is a special kind of meta verb. We mark them here.
+ if (GetNthChar(buffer, 0) == ';')
+ infix_verb = true;
+ else
+ infix_verb = false;
+#Endif;
+
+ .ReParse;
+
+ parser_inflection = name;
+ parser_inflection_func = false;
+
+ ! Initially assume the command is aimed at the player, and the verb
+ ! is the first word
+
+ num_words = NumberWords();
+ wn = 1;
+
+ #Ifdef LanguageToInformese;
+ LanguageToInformese();
+ #IfV5;
+ ! Re-tokenise:
+ Tokenise__(buffer,parse);
+ #Endif; ! V5
+ #Endif; ! LanguageToInformese
+
+ if (BeforeParsing() == false) {
+ LibraryExtensions.ext_number_1 = wn; ! Set "between calls" functionality to restore wn each pass
+ LibraryExtensions.BetweenCalls = LibraryExtensions.RestoreWN;
+ LibraryExtensions.RunWhile(ext_beforeparsing, false);
+ LibraryExtensions.BetweenCalls = 0; ! Turn off "between calls" functionality
+ }
+ num_words = NumberWords();
+
+ k=0;
+ #Ifdef DEBUG;
+ if (parser_trace >= 2) {
+ print "[ ";
+ for (i=0 : i<num_words : i++) {
+
+ j = WordValue(i+1);
+ k = WordAddress(i+1);
+ l = WordLength(i+1);
+ print "~"; for (m=0 : m<l : m++) print (char) k->m; print "~ ";
+
+ if (j == 0) print "?";
+ else {
+ #Ifdef TARGET_ZCODE;
+ if (UnsignedCompare(j, HDR_DICTIONARY-->0) >= 0 &&
+ UnsignedCompare(j, HDR_HIGHMEMORY-->0) < 0)
+ print (address) j;
+ else print j;
+ #Ifnot; ! TARGET_GLULX
+ if (j->0 == $60) print (address) j;
+ else print j;
+ #Endif; ! TARGET_
+ }
+ if (i ~= num_words-1) print " / ";
+ }
+ print " ]^";
+ }
+ #Endif; ! DEBUG
+ verb_wordnum = 1;
+ actor = player;
+ actors_location = ScopeCeiling(player);
+ usual_grammar_after = 0;
+
+ .AlmostReParse;
+
+ scope_token = 0;
+ action_to_be = NULL;
+
+ ! Begin from what we currently think is the verb word
+
+ .BeginCommand;
+
+ wn = verb_wordnum;
+ verb_word = NextWordStopped();
+
+ ! If there's no input here, we must have something like "person,".
+
+ if (verb_word == -1) {
+ best_etype = STUCK_PE;
+ jump GiveError;
+ }
+
+ ! Now try for "again" or "g", which are special cases: don't allow "again" if nothing
+ ! has previously been typed; simply copy the previous text across
+
+ if (verb_word == AGAIN2__WD or AGAIN3__WD) verb_word = AGAIN1__WD;
+ if (verb_word == AGAIN1__WD) {
+ if (actor ~= player) {
+ L__M(##Miscellany, 20);
+ jump ReType;
+ }
+ if (GetKeyBufLength(buffer3) == 0) {
+ L__M(##Miscellany, 21);
+ jump ReType;
+ }
+
+ if (WordAddress(verb_wordnum) == buffer + WORDSIZE) { ! not held back
+ ! splice rest of buffer onto end of buffer3
+ i = GetKeyBufLength(buffer3);
+ while (buffer3 -> (i + WORDSIZE - 1) == ' ' or '.')
+ i--;
+ j = i - WordLength(verb_wordnum); ! amount to move buffer up by
+ if (j > 0) {
+ for (m=INPUT_BUFFER_LEN-1 : m>=WORDSIZE+j : m--)
+ buffer->m = buffer->(m-j);
+ SetKeyBufLength(GetKeyBufLength()+j);
+ }
+ for (m=WORDSIZE : m<WORDSIZE+i : m++) buffer->m = buffer3->m;
+ if (j < 0) for (:m<WORDSIZE+i-j : m++) buffer->m = ' ';
+ }
+ else
+ for (i=0 : i<INPUT_BUFFER_LEN : i++) buffer->i = buffer3->i;
+ jump ReParse;
+ }
+
+ ! Save the present input in case of an "again" next time
+
+ if (verb_word ~= AGAIN1__WD)
+ for (i=0 : i<INPUT_BUFFER_LEN : i++) buffer3->i = buffer->i;
+
+ if (usual_grammar_after == 0) {
+ j = verb_wordnum;
+ #Ifdef TARGET_ZCODE;
+ parser_one = 0;
+ #Endif;
+ i = RunRoutines(actor, grammar);
+ #Ifdef DEBUG;
+ if (parser_trace >= 2 && actor.grammar ~= 0 or NULL)
+ print " [Grammar property returned ", i, "]^";
+ #Endif; ! DEBUG
+
+ #Ifdef TARGET_ZCODE;
+ if ((i ~= 0 or 1) &&
+ (parser_one ~= 0 ||
+ (UnsignedCompare(i, dict_start) < 0 ||
+ UnsignedCompare(i, dict_end) >= 0 ||
+ (i - dict_start) % dict_entry_size ~= 0))) {
+ usual_grammar_after = j;
+ i=-i;
+ }
+
+ #Ifnot; ! TARGET_GLULX
+ if (i < 0) { usual_grammar_after = j; i=-i; }
+ #Endif;
+
+ if (i == 1) {
+ results-->0 = action;
+ results-->1 = 0; ! Number of parameters
+ results-->2 = noun;
+ results-->3 = second;
+ if (noun) results-->1 = 1;
+ if (second) results-->1 = 2;
+ rtrue;
+ }
+ if (i ~= 0) { verb_word = i; wn--; verb_wordnum--; }
+ else { wn = verb_wordnum; verb_word = NextWord(); }
+ }
+ else usual_grammar_after = 0;
+
+ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+ !
+ ! B: Is it a direction, and so an implicit "go"? If so go to (K)
+ !
+ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+ #Ifdef LanguageIsVerb;
+ if (verb_word == 0) {
+ i = wn; verb_word = LanguageIsVerb(buffer, parse, verb_wordnum);
+ wn = i;
+ }
+ #Endif; ! LanguageIsVerb
+
+ ! If the first word is not listed as a verb, it must be a direction
+ ! or the name of someone to talk to
+
+ if (verb_word == 0 || ((verb_word->#dict_par1) & DICT_VERB) == 0) {
+
+ ! So is the first word an object contained in the special object "Compass"
+ ! (i.e., a direction)? This needs use of NounDomain, a routine which
+ ! does the object matching, returning the object number, or 0 if none found,
+ ! or REPARSE_CODE if it has restructured the parse table so the whole parse
+ ! must be begun again...
+
+ wn = verb_wordnum; indef_mode = false; token_filter = 0;
+ l = NounDomain(Compass, 0, NOUN_TOKEN);
+ if (l == REPARSE_CODE) jump ReParse;
+
+ ! If it is a direction, send back the results:
+ ! action=GoSub, no of arguments=1, argument 1=the direction.
+
+ if (l ~= 0) {
+ results-->0 = ##Go;
+ action_to_be = ##Go;
+ results-->1 = 1;
+ results-->2 = l;
+ jump LookForMore;
+ }
+
+ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+ !
+ ! C: Is anyone being addressed?
+ !
+ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+ ! Only check for a comma (a "someone, do something" command) if we are
+ ! not already in the middle of one. (This simplification stops us from
+ ! worrying about "robot, wizard, you are an idiot", telling the robot to
+ ! tell the wizard that she is an idiot.)
+
+ if (actor == player) {
+ for (j=2 : j<=num_words : j++) {
+ i=NextWord();
+ if (i == comma_word) jump Conversation;
+ }
+ }
+ vw = verb_word;
+ verb_word = UnknownVerb(vw);
+ if (verb_word == false) verb_word = LibraryExtensions.RunWhile(ext_unknownverb, false, vw);
+ if (verb_word) jump VerbAccepted;
+ best_etype = VERB_PE;
+ jump GiveError;
+
+ ! NextWord nudges the word number wn on by one each time, so we've now
+ ! advanced past a comma. (A comma is a word all on its own in the table.)
+
+ .Conversation;
+
+ j = wn - 1;
+ if (j == 1) {
+ L__M(##Miscellany, 22);
+ jump ReType;
+ }
+
+ ! Use NounDomain (in the context of "animate creature") to see if the
+ ! words make sense as the name of someone held or nearby
+
+ wn = 1; lookahead = HELD_TOKEN;
+ scope_reason = TALKING_REASON;
+ l = NounDomain(player,actors_location,CREATURE_TOKEN);
+ scope_reason = PARSING_REASON;
+ if (l == REPARSE_CODE) jump ReParse;
+ if (l == 0) {
+ L__M(##Miscellany, 23);
+ jump ReType;
+ }
+
+ .Conversation2;
+
+ ! The object addressed must at least be "talkable" if not actually "animate"
+ ! (the distinction allows, for instance, a microphone to be spoken to,
+ ! without the parser thinking that the microphone is human).
+
+ if (l hasnt animate && l hasnt talkable) {
+ L__M(##Miscellany, 24, l);
+ jump ReType;
+ }
+
+ ! Check that there aren't any mystery words between the end of the person's
+ ! name and the comma (eg, throw out "dwarf sdfgsdgs, go north").
+
+ if (wn ~= j) {
+ L__M(##Miscellany, 25);
+ jump ReType;
+ }
+
+ ! The player has now successfully named someone. Adjust "him", "her", "it":
+
+ PronounNotice(l);
+
+ ! Set the global variable "actor", adjust the number of the first word,
+ ! and begin parsing again from there.
+
+ verb_wordnum = j + 1;
+
+ ! Stop things like "me, again":
+
+ if (l == player) {
+ wn = verb_wordnum;
+ if (NextWordStopped() == AGAIN1__WD or AGAIN2__WD or AGAIN3__WD) {
+ L__M(##Miscellany, 20);
+ jump ReType;
+ }
+ }
+
+ actor = l;
+ actors_location = ScopeCeiling(l);
+ #Ifdef DEBUG;
+ if (parser_trace >= 1)
+ print "[Actor is ", (the) actor, " in ", (name) actors_location, "]^";
+ #Endif; ! DEBUG
+ jump BeginCommand;
+
+ } ! end of first-word-not-a-verb
+
+ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+ !
+ ! D: Get the verb: try all the syntax lines for that verb
+ !
+ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+ .VerbAccepted;
+
+ ! We now definitely have a verb, not a direction, whether we got here by the
+ ! "take ..." or "person, take ..." method. Get the meta flag for this verb:
+
+ meta = (verb_word->#dict_par1) & DICT_META;
+
+ ! You can't order other people to "full score" for you, and so on...
+
+ if (meta && actor ~= player) {
+ best_etype = VERB_PE;
+ meta = false;
+ jump GiveError;
+ }
+
+ ! Now let i be the corresponding verb number, stored in the dictionary entry
+ ! (in a peculiar 255-n fashion for traditional Infocom reasons)...
+
+ i = DictionaryWordToVerbNum(verb_word);
+
+ ! ...then look up the i-th entry in the verb table, whose address is at word
+ ! 7 in the Z-machine (in the header), so as to get the address of the syntax
+ ! table for the given verb...
+
+ #Ifdef TARGET_ZCODE;
+ syntax = (HDR_STATICMEMORY-->0)-->i;
+ #Ifnot; ! TARGET_GLULX
+ syntax = (#grammar_table)-->(i+1);
+ #Endif; ! TARGET_
+
+ ! ...and then see how many lines (ie, different patterns corresponding to the
+ ! same verb) are stored in the parse table...
+
+ num_lines = (syntax->0) - 1;
+
+ ! ...and now go through them all, one by one.
+ ! To prevent pronoun_word 0 being misunderstood,
+
+ pronoun_word = NULL; pronoun_obj = NULL;
+
+ #Ifdef DEBUG;
+ if (parser_trace >= 1) print "[Parsing for the verb '", (address) verb_word, "' (", num_lines+1, " lines)]^";
+ #Endif; ! DEBUG
+
+ best_etype = STUCK_PE; nextbest_etype = STUCK_PE;
+ multiflag = false; saved_oops = 0;
+
+ ! "best_etype" is the current failure-to-match error - it is by default
+ ! the least informative one, "don't understand that sentence".
+ ! "nextbest_etype" remembers the best alternative to having to ask a
+ ! scope token for an error message (i.e., the best not counting ASKSCOPE_PE).
+ ! multiflag is used here to prevent inappropriate MULTI_PE errors
+ ! in addition to its unrelated duties passing information to action routines
+
+ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+ !
+ ! E: Break down a syntax line into analysed tokens
+ !
+ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+ line_address = syntax + 1;
+
+ for (line=0 : line<=num_lines : line++) {
+
+ for (i=0 : i<32 : i++) {
+ line_token-->i = ENDIT_TOKEN;
+ line_ttype-->i = ELEMENTARY_TT;
+ line_tdata-->i = ENDIT_TOKEN;
+ }
+
+ ! Unpack the syntax line from Inform format into three arrays; ensure that
+ ! the sequence of tokens ends in an ENDIT_TOKEN.
+
+ line_address = UnpackGrammarLine(line_address);
+
+ #Ifdef DEBUG;
+ if (parser_trace >= 1) {
+ if (parser_trace >= 2) new_line;
+ print "[line ", line; DebugGrammarLine();
+ print "]^";
+ }
+ #Endif; ! DEBUG
+
+ ! We aren't in "not holding" or inferring modes, and haven't entered
+ ! any parameters on the line yet, or any special numbers; the multiple
+ ! object is still empty.
+
+ token_filter = 0;
+ not_holding = 0;
+ inferfrom = 0;
+ parameters = 0;
+ nsns = 0; special_word = 0; special_number = 0;
+ multiple_object-->0 = 0;
+ multi_context = 0;
+ etype = STUCK_PE; line_etype = 100;
+
+ ! Put the word marker back to just after the verb
+
+ wn = verb_wordnum+1;
+
+ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+ !
+ ! F: Look ahead for advance warning for multiexcept/multiinside
+ !
+ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+ ! There are two special cases where parsing a token now has to be
+ ! affected by the result of parsing another token later, and these
+ ! two cases (multiexcept and multiinside tokens) are helped by a quick
+ ! look ahead, to work out the future token now. We can only carry this
+ ! out in the simple (but by far the most common) case:
+ !
+ ! multiexcept <one or more prepositions> noun
+ !
+ ! and similarly for multiinside.
+
+ advance_warning = NULL; indef_mode = false;
+ for (i=0,m=false,pcount=0 : line_token-->pcount ~= ENDIT_TOKEN : pcount++) {
+ scope_token = 0;
+
+ if (line_ttype-->pcount ~= PREPOSITION_TT) i++;
+
+ if (line_ttype-->pcount == ELEMENTARY_TT) {
+ if (line_tdata-->pcount == MULTI_TOKEN) m = true;
+ if (line_tdata-->pcount == MULTIEXCEPT_TOKEN or MULTIINSIDE_TOKEN && i == 1) {
+ ! First non-preposition is "multiexcept" or
+ ! "multiinside", so look ahead.
+
+ #Ifdef DEBUG;
+ if (parser_trace >= 2) print " [Trying look-ahead]^";
+ #Endif; ! DEBUG
+
+ ! We need this to be followed by 1 or more prepositions.
+
+ pcount++;
+ if (line_ttype-->pcount == PREPOSITION_TT) {
+ ! skip ahead to a preposition word in the input
+ do {
+ l = NextWord();
+ } until ((wn > num_words) ||
+ (l && (l->#dict_par1) & DICT_PREP ~= 0));
+
+ if (wn > num_words) {
+ #Ifdef DEBUG;
+ if (parser_trace >= 2)
+ print " [Look-ahead aborted: prepositions missing]^";
+ #Endif;
+ jump EmptyLine;
+ }
+
+ do {
+ if (PrepositionChain(l, pcount) ~= -1) {
+ ! advance past the chain
+ if ((line_token-->pcount)->0 & $20 ~= 0) {
+ pcount++;
+ while ((line_token-->pcount ~= ENDIT_TOKEN) &&
+ ((line_token-->pcount)->0 & $10 ~= 0))
+ pcount++;
+ } else {
+ pcount++;
+ }
+ } else {
+ ! try to find another preposition word
+ do {
+ l = NextWord();
+ } until ((wn >= num_words) ||
+ (l && (l->#dict_par1) & 8 ~= 0));
+
+ if (l && (l->#dict_par1) & 8) continue;
+
+ ! lookahead failed
+ #Ifdef DEBUG;
+ if (parser_trace >= 2)
+ print " [Look-ahead aborted: prepositions don't match]^";
+ #Endif;
+ jump LineFailed;
+ }
+ l = NextWord();
+ } until (line_ttype-->pcount ~= PREPOSITION_TT);
+
+ .EmptyLine;
+ ! put back the non-preposition we just read
+ wn--;
+
+ if ((line_ttype-->pcount == ELEMENTARY_TT) && (line_tdata-->pcount == NOUN_TOKEN)) {
+ l = Descriptors(); ! skip past THE etc
+ if (l~=0) etype=l; ! don't allow multiple objects
+ l = NounDomain(actors_location, actor, NOUN_TOKEN);
+
+ #Ifdef DEBUG;
+ if (parser_trace >= 2) {
+ print " [Advanced to ~noun~ token: ";
+ if (l == REPARSE_CODE) print "re-parse request]^";
+ if (l == 1) print "but multiple found]^";
+ if (l == 0) print "error ", etype, "]^";
+ if (l >= 2) print (the) l, "]^";
+ }
+ #Endif; ! DEBUG
+ if (l == REPARSE_CODE) jump ReParse;
+ if (l >= 2) advance_warning = l;
+ }
+ }
+ break;
+ }
+ }
+ }
+
+ ! Slightly different line-parsing rules will apply to "take multi", to
+ ! prevent "take all" behaving correctly but misleadingly when there's
+ ! nothing to take.
+
+ take_all_rule = 0;
+ if (m && params_wanted == 1 && action_to_be == ##Take)
+ take_all_rule = 1;
+
+ ! And now start again, properly, forearmed or not as the case may be.
+ ! As a precaution, we clear all the variables again (they may have been
+ ! disturbed by the call to NounDomain, which may have called outside
+ ! code, which may have done anything!).
+
+ not_holding = 0;
+ inferfrom = 0;
+ inferword = 0;
+ parameters = 0;
+ nsns = 0; special_word = 0; special_number = 0;
+ multiple_object-->0 = 0;
+ etype = STUCK_PE; line_etype = 100;
+ wn = verb_wordnum+1;
+
+ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+ !
+ ! G: Parse each token in turn (calling ParseToken to do most of the work)
+ !
+ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+ ! "Pattern" gradually accumulates what has been recognised so far,
+ ! so that it may be reprinted by the parser later on
+
+ for (pcount=1 : : pcount++) {
+ pattern-->pcount = PATTERN_NULL; scope_token = 0;
+
+ token = line_token-->(pcount-1);
+ lookahead = line_token-->pcount;
+
+ #Ifdef DEBUG;
+ if (parser_trace >= 2)
+ print " [line ", line, " token ", pcount, " word ", wn, " : ", (DebugToken) token,
+ "]^";
+ #Endif; ! DEBUG
+
+ if (token ~= ENDIT_TOKEN) {
+ scope_reason = PARSING_REASON;
+ parser_inflection = name;
+ parser_inflection_func = false;
+ AnalyseToken(token);
+
+ if (action_to_be == ##AskTo && found_ttype == ELEMENTARY_TT &&
+ found_tdata == TOPIC_TOKEN && line_etype == 100) {
+ if (actor ~= player) {
+ best_etype = VERB_PE; jump GiveError;
+ }
+ l = inputobjs-->2;
+ wn--;
+ j = wn;
+ jump Conversation2;
+ }
+
+ l = ParseToken__(found_ttype, found_tdata, pcount-1, token);
+ while (l<-200) l = ParseToken__(ELEMENTARY_TT, l + 256);
+ scope_reason = PARSING_REASON;
+
+ if (l == GPR_PREPOSITION) {
+ if (found_ttype~=PREPOSITION_TT && (found_ttype~=ELEMENTARY_TT ||
+ found_tdata~=TOPIC_TOKEN)) params_wanted--;
+ l = true;
+ }
+ else
+ if (l < 0) l = false;
+ else
+ if (l ~= GPR_REPARSE) {
+ if (l == GPR_NUMBER) {
+ if (nsns == 0) special_number1 = parsed_number;
+ else special_number2 = parsed_number;
+ nsns++; l = 1;
+ }
+ if (l == GPR_MULTIPLE) l = 0;
+ results-->(parameters+2) = l;
+ parameters++;
+ pattern-->pcount = l;
+ l = true;
+ }
+
+ #Ifdef DEBUG;
+ if (parser_trace >= 3) {
+ print " [token resulted in ";
+ if (l == REPARSE_CODE) print "re-parse request]^";
+ if (l == 0) print "failure with error type ", etype, "]^";
+ if (l == 1) print "success]^";
+ }
+ #Endif; ! DEBUG
+
+ if (l == REPARSE_CODE) jump ReParse;
+ if (l == false) {
+ if (etype < line_etype) line_etype = etype;
+ if (etype == STUCK_PE || wn >= num_words) break;
+ }
+ }
+ else {
+
+ ! If the player has entered enough already but there's still
+ ! text to wade through: store the pattern away so as to be able to produce
+ ! a decent error message if this turns out to be the best we ever manage,
+ ! and in the mean time give up on this line
+
+ ! However, if the superfluous text begins with a comma or "then" then
+ ! take that to be the start of another instruction
+
+ if (line_etype < 100) break;
+ if (wn <= num_words) {
+ l = NextWord();
+ if (l == THEN1__WD or THEN2__WD or THEN3__WD or comma_word or AND1__WD) {
+ held_back_mode = 1; hb_wn = wn-1;
+ }
+ else {
+ for (m=0 : m<32 : m++) pattern2-->m = pattern-->m;
+ pcount2 = pcount;
+ etype = UPTO_PE;
+ break;
+ }
+ }
+
+ ! Now, we may need to revise the multiple object because of the single one
+ ! we now know (but didn't when the list was drawn up).
+
+ if (parameters >= 1 && results-->2 == 0) {
+ l = ReviseMulti(results-->3);
+ if (l ~= 0) { etype = l; results-->0 = action_to_be; break; }
+ }
+ if (parameters >= 2 && results-->3 == 0) {
+ l = ReviseMulti(results-->2);
+ if (l ~= 0) { etype = l; break; }
+ }
+
+ ! To trap the case of "take all" inferring only "yourself" when absolutely
+ ! nothing else is in the vicinity...
+
+ if (take_all_rule == 2 && results-->2 == actor) {
+ best_etype = NOTHING_PE;
+ jump GiveError;
+ }
+
+ #Ifdef DEBUG;
+ if (parser_trace >= 1) print "[Line successfully parsed]^";
+ #Endif; ! DEBUG
+
+ ! The line has successfully matched the text. Declare the input error-free...
+
+ oops_from = 0;
+
+ ! ...explain any inferences made (using the pattern)...
+ ! This is where the parser replies (the sword) if things aren't clear.
+ if (inferfrom ~= 0 && no_infer_message == false) {
+ print "("; PrintCommand(inferfrom); print ")^";
+ }
+ no_infer_message = false;
+
+ ! ...copy the action number, and the number of parameters...
+
+ results-->0 = action_to_be;
+ results-->1 = parameters;
+
+ ! ...reverse first and second parameters if need be...
+
+ if (action_reversed && parameters == 2) {
+ i = results-->2; results-->2 = results-->3;
+ results-->3 = i;
+ if (nsns == 2) {
+ i = special_number1; special_number1 = special_number2;
+ special_number2 = i;
+ }
+ }
+
+ ! ...and to reset "it"-style objects to the first of these parameters, if
+ ! there is one (and it really is an object)...
+
+ if (parameters > 0 && results-->2 >= 2)
+ PronounNotice(results-->2);
+
+ ! ...and worry about the case where an object was allowed as a parameter
+ ! even though the player wasn't holding it and should have been: in this
+ ! event, keep the results for next time round, go into "not holding" mode,
+ ! and for now tell the player what's happening and return a "take" request
+ ! instead...
+
+ if (not_holding ~= 0 && actor == player) {
+ action = ##Take;
+ i = RunRoutines(not_holding, before_implicit);
+ ! i = 0: Take the object, tell the player (default)
+ ! i = 1: Take the object, don't tell the player
+ ! i = 2: don't Take the object, continue
+ ! i = 3: don't Take the object, don't continue
+ if (i > 2 || no_implicit_actions) { best_etype = NOTHELD_PE; jump GiveError; }
+ ! perform the implicit Take
+ if (i < 2) {
+ if (i ~= 1) ! and tell the player
+ L__M(##Miscellany, 26, not_holding);
+ notheld_mode = 1;
+ for (i=0 : i<8 : i++) kept_results-->i = results-->i;
+ results-->0 = ##Take;
+ results-->1 = 1;
+ results-->2 = not_holding;
+ }
+ }
+
+ ! (Notice that implicit takes are only generated for the player, and not
+ ! for other actors. This avoids entirely logical, but misleading, text
+ ! being printed.)
+
+ ! ...and return from the parser altogether, having successfully matched
+ ! a line.
+
+ if (held_back_mode == 1) {
+ wn=hb_wn;
+ jump LookForMore;
+ }
+ rtrue;
+
+ } ! end of if(token ~= ENDIT_TOKEN) else
+ } ! end of for(pcount++)
+
+ .LineFailed;
+ ! The line has failed to match.
+ ! We continue the outer "for" loop, trying the next line in the grammar.
+
+ if (line_etype < 100) etype = line_etype;
+ if (etype > best_etype) best_etype = etype;
+ if (etype ~= ASKSCOPE_PE && etype > nextbest_etype) nextbest_etype = etype;
+
+ ! ...unless the line was something like "take all" which failed because
+ ! nothing matched the "all", in which case we stop and give an error now.
+
+ if (take_all_rule == 2 && etype==NOTHING_PE) break;
+
+ } ! end of for(line++)
+
+ ! The grammar is exhausted: every line has failed to match.
+
+ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+ !
+ ! H: Cheaply parse otherwise unrecognised conversation and return
+ !
+ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+ .GiveError;
+
+ etype = best_etype;
+
+ ! Errors are handled differently depending on who was talking.
+ ! If the command was addressed to somebody else (eg, "dwarf, sfgh") then
+ ! it is taken as conversation which the parser has no business in disallowing.
+
+ if (actor ~= player) {
+ if (usual_grammar_after ~= 0) {
+ verb_wordnum = usual_grammar_after;
+ jump AlmostReParse;
+ }
+ wn = verb_wordnum;
+ special_word = NextWord();
+ if (special_word == comma_word) {
+ special_word = NextWord();
+ verb_wordnum++;
+ }
+ special_number = TryNumber(verb_wordnum);
+ results-->0 = ##NotUnderstood;
+ results-->1 = 2;
+ results-->2 = 1; special_number1 = special_word;
+ results-->3 = actor;
+ consult_from = verb_wordnum; consult_words = num_words-consult_from+1;
+ rtrue;
+ }
+
+ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+ !
+ ! I: Print best possible error message
+ !
+ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+ ! If the player was the actor (eg, in "take dfghh") the error must be
+ ! printed, and fresh input called for. In four cases the oops word
+ ! must be jiggled (where oops_from is set to something).
+
+ if (ParserError(etype)) jump ReType;
+ if (LibraryExtensions.RunWhile(ext_parsererror, false, etype)) jump ReType;
+ pronoun_word = pronoun__word; pronoun_obj = pronoun__obj;
+
+ if (etype == STUCK_PE) { L__M(##Miscellany, 27); oops_from = 1; }
+ if (etype == UPTO_PE) { L__M(##Miscellany, 28);
+ for (m=0 : m<32 : m++) pattern-->m = pattern2-->m;
+ pcount = pcount2; PrintCommand(0); L__M(##Miscellany, 56);
+ oops_from = wn-1;
+ }
+ if (etype == NUMBER_PE) L__M(##Miscellany, 29);
+ if (etype == CANTSEE_PE) { L__M(##Miscellany, 30); oops_from=saved_oops;}
+ if (etype == TOOLIT_PE) L__M(##Miscellany, 31);
+ if (etype == NOTHELD_PE) { L__M(##Miscellany, 32, not_holding); oops_from=saved_oops; }
+ if (etype == MULTI_PE) L__M(##Miscellany, 33);
+ if (etype == MMULTI_PE) L__M(##Miscellany, 34);
+ if (etype == VAGUE_PE) L__M(##Miscellany, 35, pronoun_word);
+ if (etype == EXCEPT_PE) L__M(##Miscellany, 36);
+ if (etype == ANIMA_PE) L__M(##Miscellany, 37);
+ if (etype == VERB_PE) L__M(##Miscellany, 38);
+ if (etype == SCENERY_PE) L__M(##Miscellany, 39);
+ if (etype == ITGONE_PE) {
+ if (pronoun_obj == NULL)
+ L__M(##Miscellany, 35, pronoun_word);
+ else L__M(##Miscellany, 40, pronoun_word, pronoun_obj);
+ }
+ if (etype == JUNKAFTER_PE) L__M(##Miscellany, 41);
+ if (etype == TOOFEW_PE) L__M(##Miscellany, 42, multi_had);
+ if (etype == NOTHING_PE) {
+ if (results-->0 == ##Remove && results-->3 ofclass Object) {
+ noun = results-->3; ! ensure valid for messages
+ if (noun has animate) L__M(##Miscellany, 44, verb_word);
+ else if (noun hasnt container or supporter) L__M(##Insert, 2, noun);
+ else if (noun has container && noun hasnt open) L__M(##Take, 9, noun);
+ else if (children(noun)==0) L__M(##Search, 6, noun);
+ else results-->0 = 0;
+ }
+ if (results-->0 ~= ##Remove) {
+ if (multi_wanted == 100) L__M(##Miscellany, 43);
+ else {
+ #Ifdef NO_TAKE_ALL;
+ if (take_all_rule == 2) L__M(##Miscellany, 59);
+ else L__M(##Miscellany, 44, verb_word);
+ #Ifnot;
+ L__M(##Miscellany, 44, verb_word);
+ #Endif; ! NO_TAKE_ALL
+ }
+ }
+ }
+ if (etype == ASKSCOPE_PE) {
+ scope_stage = 3;
+ if (scope_error() == -1) {
+ best_etype = nextbest_etype;
+ jump GiveError;
+ }
+ }
+
+ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+ !
+ ! J: Retry the whole lot
+ !
+ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+ ! And go (almost) right back to square one...
+
+ jump ReType;
+
+ ! ...being careful not to go all the way back, to avoid infinite repetition
+ ! of a deferred command causing an error.
+
+
+ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+ !
+ ! K: Last thing: check for "then" and further instructions(s), return.
+ !
+ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+ ! At this point, the return value is all prepared, and we are only looking
+ ! to see if there is a "then" followed by subsequent instruction(s).
+
+ .LookForMore;
+
+ if (wn > num_words) rtrue;
+
+ i = NextWord();
+ if (i == THEN1__WD or THEN2__WD or THEN3__WD or comma_word or AND1__WD) {
+ if (wn > num_words) {
+ held_back_mode = false;
+ return;
+ }
+ i = WordAddress(verb_wordnum);
+ j = WordAddress(wn);
+ for (: i<j : i++) i->0 = ' ';
+ i = NextWord();
+ if (i == AGAIN1__WD or AGAIN2__WD or AGAIN3__WD) {
+ ! Delete the words "then again" from the again buffer,
+ ! in which we have just realised that it must occur:
+ ! prevents an infinite loop on "i. again"
+
+ i = WordAddress(wn-2)-buffer;
+ if (wn > num_words) j = INPUT_BUFFER_LEN-1;
+ else j = WordAddress(wn)-buffer;
+ for (: i<j : i++) buffer3->i = ' ';
+ }
+ Tokenise__(buffer,parse);
+ held_back_mode = true;
+ return;
+ }
+ best_etype = UPTO_PE;
+ jump GiveError;
+
+]; ! end of Parser__parse
+
+[ ScopeCeiling person act;
+ act = parent(person);
+ if (act == 0) return person;
+ if (person == player && location == thedark) return thedark;
+ while (parent(act)~=0 && (act has transparent || act has supporter ||
+ (act has container && act has open)))
+ act = parent(act);
+ return act;
+];
+
+! ----------------------------------------------------------------------------
+! Descriptors()
+!
+! Handles descriptive words like "my", "his", "another" and so on.
+! Skips "the", and leaves wn pointing to the first misunderstood word.
+!
+! Allowed to set up for a plural only if allow_p is set
+!
+! Returns error number, or 0 if no error occurred
+! ----------------------------------------------------------------------------
+
+Constant OTHER_BIT = 1; ! These will be used in Adjudicate()
+Constant MY_BIT = 2; ! to disambiguate choices
+Constant THAT_BIT = 4;
+Constant PLURAL_BIT = 8;
+Constant LIT_BIT = 16;
+Constant UNLIT_BIT = 32;
+
+[ ResetDescriptors;
+ indef_mode = 0; indef_type = 0; indef_wanted = 0; indef_guess_p = 0;
+ indef_possambig = false;
+ indef_owner = nothing;
+ indef_cases = $$111111111111;
+ indef_nspec_at = 0;
+];
+
+[ Descriptors allows_multiple o x y flag cto type m n;
+ ResetDescriptors();
+ if (wn > num_words) return 0;
+ m = wn;
+ for (flag=true : flag :) {
+ o = NextWordStopped(); flag = false;
+ for (x=1 : x<=LanguageDescriptors-->0 : x=x+4) {
+ if (o == LanguageDescriptors-->x) {
+ ! Attempt to compensate for her-her confusion.
+ for (y = 1 : y<=LanguagePronouns-->0 : y=y+2) {
+ if (o == LanguagePronouns-->y)
+ jump PersonalPronoun;
+ }
+ flag = true;
+ type = LanguageDescriptors-->(x+2);
+ if (type ~= DEFART_PK) indef_mode = true;
+ indef_possambig = true;
+ indef_cases = indef_cases & (LanguageDescriptors-->(x+1));
+ if (type == POSSESS_PK) {
+ cto = LanguageDescriptors-->(x+3);
+ switch (cto) {
+ 0: indef_type = indef_type | MY_BIT;
+ 1: indef_type = indef_type | THAT_BIT;
+ default:
+ indef_owner = PronounValue(cto);
+ if (indef_owner == NULL) indef_owner = InformParser;
+ }
+ }
+ if (type == light) indef_type = indef_type | LIT_BIT;
+ if (type == -light) indef_type = indef_type | UNLIT_BIT;
+ }
+ }
+ .PersonalPronoun;
+
+ if (o == OTHER1__WD or OTHER2__WD or OTHER3__WD) {
+ indef_mode = 1; flag = 1;
+ indef_type = indef_type | OTHER_BIT;
+ }
+ if (o == ALL1__WD or ALL2__WD or ALL3__WD or ALL4__WD or ALL5__WD) {
+ indef_mode = 1; flag = 1; indef_wanted = 100;
+ if (take_all_rule == 1) take_all_rule = 2;
+ indef_type = indef_type | PLURAL_BIT;
+ }
+ if (allow_plurals && allows_multiple) {
+ n = TryNumber(wn-1);
+ if (n == 1) { indef_mode = 1; flag = 1; indef_wanted = 1; }
+ if (n > 1) {
+ indef_guess_p = 1;
+ indef_mode = 1; flag = 1; indef_wanted = n;
+ indef_nspec_at = wn-1;
+ indef_type = indef_type | PLURAL_BIT;
+ }
+ }
+ if (flag == 1 && NextWordStopped() ~= OF1__WD or OF2__WD or OF3__WD or OF4__WD)
+ wn--; ! Skip 'of' after these
+ }
+ wn--;
+ num_desc = wn - m;
+ return 0;
+];
+
+! ----------------------------------------------------------------------------
+! CreatureTest: Will this person do for a "creature" token?
+! ----------------------------------------------------------------------------
+
+[ CreatureTest obj;
+ if (actor ~= player) rtrue;
+ if (obj has animate) rtrue;
+ if (obj hasnt talkable) rfalse;
+ if (action_to_be == ##Ask or ##Answer or ##Tell or ##AskFor or ##AskTo) rtrue;
+ rfalse;
+];
+
+[ PrepositionChain wd index;
+ if (line_tdata-->index == wd) return wd;
+ if ((line_token-->index)->0 & $20 == 0) return -1;
+ do {
+ if (line_tdata-->index == wd) return wd;
+ index++;
+ } until ((line_token-->index == ENDIT_TOKEN) || (((line_token-->index)->0 & $10) == 0));
+ return -1;
+];
+
+! ----------------------------------------------------------------------------
+! ParseToken(type, data):
+! Parses the given token, from the current word number wn, with exactly
+! the specification of a general parsing routine.
+! (Except that for "topic" tokens and prepositions, you need to supply
+! a position in a valid grammar line as third argument.)
+!
+! Returns:
+! GPR_REPARSE for "reconstructed input, please re-parse from scratch"
+! GPR_PREPOSITION for "token accepted with no result"
+! $ff00 + x for "please parse ParseToken(ELEMENTARY_TT, x) instead"
+! 0 for "token accepted, result is the multiple object list"
+! 1 for "token accepted, result is the number in parsed_number"
+! object num for "token accepted with this object as result"
+! -1 for "token rejected"
+!
+! (A) Analyse the token; handle all tokens not involving
+! object lists and break down others into elementary tokens
+! (B) Begin parsing an object list
+! (C) Parse descriptors (articles, pronouns, etc.) in the list
+! (D) Parse an object name
+! (E) Parse connectives ("and", "but", etc.) and go back to (C)
+! (F) Return the conclusion of parsing an object list
+! ----------------------------------------------------------------------------
+
+[ ParseToken given_ttype given_tdata token_n x y;
+ x = lookahead; lookahead = NOUN_TOKEN;
+ y = ParseToken__(given_ttype,given_tdata,token_n);
+ if (y == GPR_REPARSE) Tokenise__(buffer,parse);
+ lookahead = x; return y;
+];
+
+[ ParseToken__ given_ttype given_tdata token_n
+ token l o i j k and_parity single_object desc_wn many_flag
+ token_allows_multiple prev_indef_wanted;
+
+ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+ !
+ ! A: Analyse token; handle all not involving object lists, break down others
+ !
+ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+ token_filter = 0;
+
+ switch (given_ttype) {
+ ELEMENTARY_TT:
+ switch (given_tdata) {
+ SPECIAL_TOKEN:
+ l = TryNumber(wn);
+ special_word = NextWord();
+ #Ifdef DEBUG;
+ if (l ~= -1000)
+ if (parser_trace >= 3) print " [Read special as the number ", l, "]^";
+ #Endif; ! DEBUG
+ if (l == -1000) {
+ #Ifdef DEBUG;
+ if (parser_trace >= 3) print " [Read special word at word number ", wn, "]^";
+ #Endif; ! DEBUG
+ l = special_word;
+ }
+ parsed_number = l; return GPR_NUMBER;
+
+ NUMBER_TOKEN:
+ l=TryNumber(wn++);
+ if (l == -1000) { etype = NUMBER_PE; return GPR_FAIL; }
+ #Ifdef DEBUG;
+ if (parser_trace>=3) print " [Read number as ", l, "]^";
+ #Endif; ! DEBUG
+ parsed_number = l; return GPR_NUMBER;
+
+ CREATURE_TOKEN:
+ if (action_to_be == ##Answer or ##Ask or ##AskFor or ##AskTo or ##Tell)
+ scope_reason = TALKING_REASON;
+
+ TOPIC_TOKEN:
+ consult_from = wn;
+ if ((line_ttype-->(token_n+1) ~= PREPOSITION_TT) &&
+ (line_token-->(token_n+1) ~= ENDIT_TOKEN))
+ RunTimeError(13);
+ do o = NextWordStopped();
+ until (o == -1 || PrepositionChain(o, token_n+1) ~= -1);
+ wn--;
+ consult_words = wn-consult_from;
+ if (consult_words == 0) return GPR_FAIL;
+ if (action_to_be == ##Ask or ##Answer or ##Tell) {
+ o = wn; wn = consult_from; parsed_number = NextWord();
+ #Ifdef EnglishNaturalLanguage;
+ if (parsed_number == 'the' && consult_words > 1) parsed_number=NextWord();
+ #Endif; ! EnglishNaturalLanguage
+ wn = o; return 1;
+ }
+ if (o==-1 && (line_ttype-->(token_n+1) == PREPOSITION_TT))
+ return GPR_FAIL; ! don't infer if required preposition is absent
+ return GPR_PREPOSITION;
+ }
+
+ PREPOSITION_TT:
+ #Iffalse (Grammar__Version == 1);
+ ! Is it an unnecessary alternative preposition, when a previous choice
+ ! has already been matched?
+ if ((token->0) & $10) return GPR_PREPOSITION;
+ #Endif; ! Grammar__Version
+
+ ! If we've run out of the player's input, but still have parameters to
+ ! specify, we go into "infer" mode, remembering where we are and the
+ ! preposition we are inferring...
+
+ if (wn > num_words) {
+ if (inferfrom==0 && parameters<params_wanted) {
+ inferfrom = pcount; inferword = token;
+ pattern-->pcount = REPARSE_CODE + Dword__No(given_tdata);
+ }
+
+ ! If we are not inferring, then the line is wrong...
+
+ if (inferfrom == 0) return -1;
+
+ ! If not, then the line is right but we mark in the preposition...
+
+ pattern-->pcount = REPARSE_CODE + Dword__No(given_tdata);
+ return GPR_PREPOSITION;
+ }
+
+ o = NextWord();
+
+ pattern-->pcount = REPARSE_CODE + Dword__No(o);
+
+ ! Whereas, if the player has typed something here, see if it is the
+ ! required preposition... if it's wrong, the line must be wrong,
+ ! but if it's right, the token is passed (jump to finish this token).
+
+ if (o == given_tdata) return GPR_PREPOSITION;
+ #Iffalse (Grammar__Version == 1);
+ if (PrepositionChain(o, token_n) ~= -1) return GPR_PREPOSITION;
+ #Endif; ! Grammar__Version
+ return -1;
+
+ GPR_TT:
+ l = given_tdata();
+ #Ifdef DEBUG;
+ if (parser_trace >= 3) print " [Outside parsing routine returned ", l, "]^";
+ #Endif; ! DEBUG
+ return l;
+
+ SCOPE_TT:
+ scope_token = given_tdata;
+ scope_stage = 1;
+ l = scope_token();
+ #Ifdef DEBUG;
+ if (parser_trace >= 3) print " [Scope routine returned multiple-flag of ", l, "]^";
+ #Endif; ! DEBUG
+ if (l == 1) given_tdata = MULTI_TOKEN; else given_tdata = NOUN_TOKEN;
+
+ ATTR_FILTER_TT:
+ token_filter = 1 + given_tdata;
+ given_tdata = NOUN_TOKEN;
+
+ ROUTINE_FILTER_TT:
+ token_filter = given_tdata;
+ given_tdata = NOUN_TOKEN;
+
+ } ! end of switch(given_ttype)
+
+ token = given_tdata;
+
+ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+ !
+ ! B: Begin parsing an object list
+ !
+ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+ ! There are now three possible ways we can be here:
+ ! parsing an elementary token other than "special" or "number";
+ ! parsing a scope token;
+ ! parsing a noun-filter token (either by routine or attribute).
+ !
+ ! In each case, token holds the type of elementary parse to
+ ! perform in matching one or more objects, and
+ ! token_filter is 0 (default), an attribute + 1 for an attribute filter
+ ! or a routine address for a routine filter.
+
+ token_allows_multiple = false;
+ if (token == MULTI_TOKEN or MULTIHELD_TOKEN or MULTIEXCEPT_TOKEN or MULTIINSIDE_TOKEN)
+ token_allows_multiple = true;
+
+ many_flag = false; and_parity = true; dont_infer = false;
+
+ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+ !
+ ! C: Parse descriptors (articles, pronouns, etc.) in the list
+ !
+ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+ ! We expect to find a list of objects next in what the player's typed.
+
+ .ObjectList;
+
+ #Ifdef DEBUG;
+ if (parser_trace >= 3) print " [Object list from word ", wn, "]^";
+ #Endif; ! DEBUG
+
+ ! Take an advance look at the next word: if it's "it" or "them", and these
+ ! are unset, set the appropriate error number and give up on the line
+ ! (if not, these are still parsed in the usual way - it is not assumed
+ ! that they still refer to something in scope)
+
+ o = NextWord(); wn--;
+
+ pronoun_word = NULL; pronoun_obj = NULL;
+ l = PronounValue(o);
+ if (l ~= 0) {
+ pronoun_word = o; pronoun_obj = l;
+ if (l == NULL) {
+ ! Don't assume this is a use of an unset pronoun until the
+ ! descriptors have been checked, because it might be an
+ ! article (or some such) instead
+
+ for (l=1 : l<=LanguageDescriptors-->0 : l=l+4)
+ if (o == LanguageDescriptors-->l) jump AssumeDescriptor;
+ pronoun__word = pronoun_word; pronoun__obj = pronoun_obj;
+ etype = VAGUE_PE; return GPR_FAIL;
+ }
+ }
+
+ .AssumeDescriptor;
+
+ if (o == ME1__WD or ME2__WD or ME3__WD) { pronoun_word = o; pronoun_obj = player; }
+
+ allow_plurals = true;
+ desc_wn = wn;
+
+ .TryAgain;
+
+ ! First, we parse any descriptive words (like "the", "five" or "every"):
+ l = Descriptors(token_allows_multiple);
+ if (l ~= 0) { etype = l; return GPR_FAIL; }
+
+ .TryAgain2;
+
+ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+ !
+ ! D: Parse an object name
+ !
+ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+ ! This is an actual specified object, and is therefore where a typing error
+ ! is most likely to occur, so we set:
+
+ oops_from = wn;
+
+ ! So, two cases. Case 1: token not equal to "held"
+ ! but we may well be dealing with multiple objects
+
+ ! In either case below we use NounDomain, giving it the token number as
+ ! context, and two places to look: among the actor's possessions, and in the
+ ! present location. (Note that the order depends on which is likeliest.)
+ if (token ~= HELD_TOKEN) {
+ i = multiple_object-->0;
+ #Ifdef DEBUG;
+ if (parser_trace >= 3) print " [Calling NounDomain on location and actor]^";
+ #Endif; ! DEBUG
+ l = NounDomain(actors_location, actor, token);
+ if (l == REPARSE_CODE) return l; ! Reparse after Q&A
+
+ if (indef_wanted == 100 && l == 0 && number_matched == 0)
+ l = 1; ! ReviseMulti if TAKE ALL FROM empty container
+
+ if (token_allows_multiple && ~~multiflag) {
+ if (best_etype==MULTI_PE) best_etype=STUCK_PE;
+ multiflag = true;
+ }
+ if (l == 0) {
+ if (indef_possambig) {
+ saved_ml = match_length;
+ ResetDescriptors();
+ wn = desc_wn;
+ jump TryAgain2;
+ }
+ if ((etype ~=TOOFEW_PE && etype ~= VAGUE_PE) && (multiflag || etype ~= MULTI_PE))
+ etype = CantSee();
+ jump FailToken;
+ } ! Choose best error
+
+ #Ifdef DEBUG;
+ if (parser_trace >= 3) {
+ if (l > 1) print " [NounDomain returned ", (the) l, "]^";
+ else {
+ print " [NounDomain appended to the multiple object list:^";
+ k = multiple_object-->0;
+ for (j=i+1 : j<=k : j++)
+ print " Entry ", j, ": ", (The) multiple_object-->j,
+ " (", multiple_object-->j, ")^";
+ print " List now has size ", k, "]^";
+ }
+ }
+ #Endif; ! DEBUG
+
+ if (l == 1) {
+ if (~~many_flag) many_flag = true;
+ else { ! Merge with earlier ones
+ k = multiple_object-->0; ! (with either parity)
+ multiple_object-->0 = i;
+ for (j=i+1 : j<=k : j++) {
+ if (and_parity) MultiAdd(multiple_object-->j);
+ else MultiSub(multiple_object-->j);
+ }
+ #Ifdef DEBUG;
+ if (parser_trace >= 3) print " [Merging ", k-i, " new objects to the ", i, " old ones]^";
+ #Endif; ! DEBUG
+ }
+ }
+ else {
+ ! A single object was indeed found
+
+ if (match_length == 0 && indef_possambig) {
+ ! So the answer had to be inferred from no textual data,
+ ! and we know that there was an ambiguity in the descriptor
+ ! stage (such as a word which could be a pronoun being
+ ! parsed as an article or possessive). It's worth having
+ ! another go.
+
+ ResetDescriptors();
+ wn = desc_wn;
+ jump TryAgain2;
+ }
+
+ if (token == CREATURE_TOKEN && CreatureTest(l) == 0) {
+ etype = ANIMA_PE;
+ jump FailToken;
+ } ! Animation is required
+
+ if (~~many_flag) single_object = l;
+ else {
+ if (and_parity) MultiAdd(l); else MultiSub(l);
+ #Ifdef DEBUG;
+ if (parser_trace >= 3) print " [Combining ", (the) l, " with list]^";
+ #Endif; ! DEBUG
+ }
+ }
+
+ } else {
+ ! Case 2: token is "held" (which fortunately can't take multiple objects)
+ ! and may generate an implicit take
+ l = NounDomain(actor,actors_location,token); ! Same as above...
+ if (l == REPARSE_CODE) return GPR_REPARSE;
+ if (l == 0) {
+ if (indef_possambig) {
+ ResetDescriptors();
+ wn = desc_wn;
+ jump TryAgain2;
+ }
+ etype = CantSee(); jump FailToken; ! Choose best error
+ }
+
+ ! ...until it produces something not held by the actor. Then an implicit
+ ! take must be tried. If this is already happening anyway, things are too
+ ! confused and we have to give up (but saving the oops marker so as to get
+ ! it on the right word afterwards).
+ ! The point of this last rule is that a sequence like
+ !
+ ! > read newspaper
+ ! (taking the newspaper first)
+ ! The dwarf unexpectedly prevents you from taking the newspaper!
+ !
+ ! should not be allowed to go into an infinite repeat - read becomes
+ ! take then read, but take has no effect, so read becomes take then read...
+ ! Anyway for now all we do is record the number of the object to take.
+
+ o = parent(l);
+
+ if (o ~= actor) {
+ if (notheld_mode == 1) {
+ saved_oops = oops_from;
+ etype = NOTHELD_PE;
+ jump FailToken;
+ }
+ not_holding = l;
+ #Ifdef DEBUG;
+ if (parser_trace >= 3) print " [Allowing object ", (the) l, " for now]^";
+ #Endif; ! DEBUG
+ }
+ single_object = l;
+ } ! end of if (token ~= HELD_TOKEN) else
+
+ ! The following moves the word marker to just past the named object...
+
+ wn = oops_from + match_length;
+
+ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+ !
+ ! E: Parse connectives ("and", "but", etc.) and go back to (C)
+ !
+ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+ ! Object(s) specified now: is that the end of the list, or have we reached
+ ! "and", "but" and so on? If so, create a multiple-object list if we
+ ! haven't already (and are allowed to).
+
+ .NextInList;
+
+ o = NextWord();
+
+ if (o == AND1__WD or AND2__WD or AND3__WD or BUT1__WD or BUT2__WD or BUT3__WD or comma_word) {
+
+ #Ifdef DEBUG;
+ if (parser_trace >= 3) print " [Read connective '", (address) o, "']^";
+ #Endif; ! DEBUG
+
+ k = NextWord();
+ if (k ~= AND1__WD) wn--; ! allow Serial commas in input
+ if (k > 0 && (k->#dict_par1) & (DICT_NOUN+DICT_VERB) == DICT_VERB) {
+ wn--; ! player meant 'THEN'
+ jump PassToken;
+ }
+ if (~~token_allows_multiple) {
+ if (multiflag) jump PassToken; ! give UPTO_PE error
+ etype=MULTI_PE;
+ jump FailToken;
+ }
+
+ if (o == BUT1__WD or BUT2__WD or BUT3__WD) and_parity = 1-and_parity;
+
+ if (~~many_flag) {
+ multiple_object-->0 = 1;
+ multiple_object-->1 = single_object;
+ many_flag = true;
+ #Ifdef DEBUG;
+ if (parser_trace >= 3) print " [Making new list from ", (the) single_object, "]^";
+ #Endif; ! DEBUG
+ }
+ dont_infer = true; inferfrom=0; ! Don't print (inferences)
+ jump ObjectList; ! And back around
+ }
+
+ wn--; ! Word marker back to first not-understood word
+
+ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+ !
+ ! F: Return the conclusion of parsing an object list
+ !
+ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+ ! Happy or unhappy endings:
+
+ .PassToken;
+
+ if (many_flag) {
+ single_object = GPR_MULTIPLE;
+ multi_context = token;
+ }
+ else {
+ if (indef_mode == 1 && indef_type & PLURAL_BIT ~= 0) {
+ if (indef_wanted < 100 && indef_wanted > 1) {
+ multi_had = 1; multi_wanted = indef_wanted;
+ etype = TOOFEW_PE;
+ jump FailToken;
+ }
+ }
+ }
+ return single_object;
+
+ .FailToken;
+
+ ! If we were only guessing about it being a plural, try again but only
+ ! allowing singulars (so that words like "six" are not swallowed up as
+ ! Descriptors)
+
+ if (allow_plurals && indef_guess_p == 1) {
+ #Ifdef DEBUG;
+ if (parser_trace >= 4) print " [Retrying singulars after failure ", etype, "]^";
+ #Endif;
+ prev_indef_wanted = indef_wanted;
+ allow_plurals = false;
+ wn = desc_wn;
+ jump TryAgain;
+ }
+
+ if ((indef_wanted > 0 || prev_indef_wanted > 0) && (~~multiflag)) etype = MULTI_PE;
+
+ return GPR_FAIL;
+
+]; ! end of ParseToken__
+
+! ----------------------------------------------------------------------------
+! NounDomain does the most substantial part of parsing an object name.
+!
+! It is given two "domains" - usually a location and then the actor who is
+! looking - and a context (i.e. token type), and returns:
+!
+! 0 if no match at all could be made,
+! 1 if a multiple object was made,
+! k if object k was the one decided upon,
+! REPARSE_CODE if it asked a question of the player and consequently rewrote
+! the player's input, so that the whole parser should start again
+! on the rewritten input.
+!
+! In the case when it returns 1<k<REPARSE_CODE, it also sets the variable
+! length_of_noun to the number of words in the input text matched to the
+! noun.
+! In the case k=1, the multiple objects are added to multiple_object by
+! hand (not by MultiAdd, because we want to allow duplicates).
+! ----------------------------------------------------------------------------
+
+[ NounDomain domain1 domain2 context first_word i j k l
+ answer_words;
+ #Ifdef DEBUG;
+ if (parser_trace >= 4) {
+ print " [NounDomain called at word ", wn, "]^";
+ print " ";
+ if (indef_mode) {
+ print "seeking indefinite object: ";
+ if (indef_type & OTHER_BIT) print "other ";
+ if (indef_type & MY_BIT) print "my ";
+ if (indef_type & THAT_BIT) print "that ";
+ if (indef_type & PLURAL_BIT) print "plural ";
+ if (indef_type & LIT_BIT) print "lit ";
+ if (indef_type & UNLIT_BIT) print "unlit ";
+ if (indef_owner ~= 0) print "owner:", (name) indef_owner;
+ new_line;
+ print " number wanted: ";
+ if (indef_wanted == 100) print "all"; else print indef_wanted;
+ new_line;
+ print " most likely GNAs of names: ", indef_cases, "^";
+ }
+ else print "seeking definite object^";
+ }
+ #Endif; ! DEBUG
+
+ match_length = 0; number_matched = 0; match_from = wn; placed_in_flag = 0;
+
+ SearchScope(domain1, domain2, context);
+
+ #Ifdef DEBUG;
+ if (parser_trace >= 4) print " [NounDomain made ", number_matched, " matches]^";
+ #Endif; ! DEBUG
+
+ wn = match_from+match_length;
+
+ ! If nothing worked at all, leave with the word marker skipped past the
+ ! first unmatched word...
+
+ if (number_matched == 0) { wn++; rfalse; }
+
+ ! Suppose that there really were some words being parsed (i.e., we did
+ ! not just infer). If so, and if there was only one match, it must be
+ ! right and we return it...
+ if (match_from <= num_words) {
+ if (number_matched == 1) {
+ i=match_list-->0;
+ if (indef_mode) {
+ if ((indef_type & LIT_BIT) && i hasnt light) rfalse;
+ if ((indef_type & UNLIT_BIT) && i has light) rfalse;
+ }
+ return i;
+ }
+
+ ! ...now suppose that there was more typing to come, i.e. suppose that
+ ! the user entered something beyond this noun. If nothing ought to follow,
+ ! then there must be a mistake, (unless what does follow is just a full
+ ! stop, and or comma)
+
+ if (wn <= num_words) {
+ i = NextWord(); wn--;
+ if (i ~= AND1__WD or AND2__WD or AND3__WD or comma_word
+ or THEN1__WD or THEN2__WD or THEN3__WD
+ or BUT1__WD or BUT2__WD or BUT3__WD) {
+ if (lookahead == ENDIT_TOKEN) rfalse;
+ }
+ }
+ }
+
+ ! Now look for a good choice, if there's more than one choice...
+
+ number_of_classes = 0;
+
+ if (match_length == 0 && indef_mode && indef_wanted > 0 && indef_wanted < 100)
+ number_matched = 0; ! ask question for 'take three'
+ if (number_matched == 1) i = match_list-->0;
+ if (number_matched > 1) {
+ i = Adjudicate(context);
+ if (i == -1) rfalse;
+ if (i == 1) rtrue; ! Adjudicate has made a multiple
+ ! object, and we pass it on
+ }
+
+ ! If i is non-zero here, one of two things is happening: either
+ ! (a) an inference has been successfully made that object i is
+ ! the intended one from the user's specification, or
+ ! (b) the user finished typing some time ago, but we've decided
+ ! on i because it's the only possible choice.
+ ! In either case we have to keep the pattern up to date,
+ ! note that an inference has been made and return.
+ ! (Except, we don't note which of a pile of identical objects.)
+
+ if (i ~= 0) {
+ if (dont_infer) return i;
+ if (inferfrom == 0) inferfrom=pcount;
+ pattern-->pcount = i;
+ return i;
+ }
+
+ ! If we get here, there was no obvious choice of object to make. If in
+ ! fact we've already gone past the end of the player's typing (which
+ ! means the match list must contain every object in scope, regardless
+ ! of its name), then it's foolish to give an enormous list to choose
+ ! from - instead we go and ask a more suitable question...
+
+ if (match_from > num_words) jump Incomplete;
+ return AskPlayer(context);
+
+ ! Now we come to the question asked when the input has run out
+ ! and can't easily be guessed (eg, the player typed "take" and there
+ ! were plenty of things which might have been meant).
+
+ .Incomplete;
+
+ if (best_etype == NOTHING_PE && pattern-->1 == 0) rfalse; ! for DROP when empty-handed
+ if (context == CREATURE_TOKEN) L__M(##Miscellany, 48, actor);
+ else L__M(##Miscellany, 49, actor);
+
+ #Ifdef TARGET_ZCODE;
+ for (i=2 : i<INPUT_BUFFER_LEN : i++) buffer2->i = ' ';
+ #Endif; ! TARGET_ZCODE
+ answer_words = Keyboard(buffer2, parse2);
+
+ first_word = WordValue(1, parse2);
+ #Ifdef LanguageIsVerb;
+ if (first_word == 0) {
+ j = wn; first_word = LanguageIsVerb(buffer2, parse2, 1); wn = j;
+ }
+ #Endif; ! LanguageIsVerb
+
+ ! Once again, if the reply looks like a command, give it to the
+ ! parser to get on with and forget about the question...
+
+ ! Once again, if the reply looks like a command
+ ! (that is, VERB ... or XXX,VERB ...), give it to the parser to get
+ ! on with and forget about the question...
+
+ if (first_word) {
+ if ((first_word->#dict_par1) & DICT_VERB) {
+ CopyBuffer(buffer, buffer2);
+ return REPARSE_CODE;
+ }
+ if (NumberWords(parse2) > 2) {
+ j = WordValue(2, parse2);
+ k = WordValue(3, parse2);
+ if (j == ',//' && k && (k->#dict_par1) & DICT_VERB) {
+ CopyBuffer(buffer, buffer2);
+ return REPARSE_CODE;
+ }
+ }
+ }
+
+ ! ...but if we have a genuine answer, then:
+ !
+ ! (1) we must glue in text suitable for anything that's been inferred.
+
+ if (inferfrom ~= 0) {
+ for (j=inferfrom : j<pcount : j++) {
+ if (pattern-->j == PATTERN_NULL) continue;
+ i = WORDSIZE + GetKeyBufLength();
+ SetKeyBufLength(i-WORDSIZE + 1);
+ buffer->(i++) = ' ';
+
+ #Ifdef DEBUG;
+ if (parser_trace >= 5) print "[Gluing in inference with pattern code ", pattern-->j, "]^";
+ #Endif; ! DEBUG
+
+ ! Conveniently, parse2-->1 is the first word in both ZCODE and GLULX.
+
+ parse2-->1 = 0;
+
+ ! An inferred object. Best we can do is glue in a pronoun.
+ ! (This is imperfect, but it's very seldom needed anyway.)
+
+ if (pattern-->j >= 2 && pattern-->j < REPARSE_CODE) {
+ ! was the inference made from some noun words?
+ ! In which case, we can infer again.
+ if ((WordValue(NumberWords())->#dict_par1) & DICT_NOUN) continue;
+ PronounNotice(pattern-->j);
+ for (k=1 : k<=LanguagePronouns-->0 : k=k+3)
+ if (pattern-->j == LanguagePronouns-->(k+2)) {
+ parse2-->1 = LanguagePronouns-->k;
+ #Ifdef DEBUG;
+ if (parser_trace >= 5) print "[Using pronoun '", (address) parse2-->1, "']^";
+ #Endif; ! DEBUG
+ break;
+ }
+ }
+ else {
+ ! An inferred preposition.
+ parse2-->1 = No__Dword(pattern-->j - REPARSE_CODE);
+ #Ifdef DEBUG;
+ if (parser_trace >= 5) print "[Using preposition '", (address) parse2-->1, "']^";
+ #Endif; ! DEBUG
+ }
+
+ ! parse2-->1 now holds the dictionary address of the word to glue in.
+
+ if (parse2-->1 ~= 0) {
+ k = buffer + i;
+ #Ifdef TARGET_ZCODE;
+ @output_stream 3 k;
+ print (address) parse2-->1;
+ @output_stream -3;
+ k = k-->0;
+ for (l=i : l<i+k : l++) buffer->l = buffer->(l+2);
+ #Ifnot; ! TARGET_GLULX
+ k = PrintAnyToArray(buffer+i, INPUT_BUFFER_LEN-i, parse2-->1);
+ l=l; ! suppress compiler warning
+ #Endif; ! TARGET_
+ i = i + k; SetKeyBufLength(i-WORDSIZE);
+ }
+ }
+ }
+
+ ! (2) we must glue the newly-typed text onto the end.
+
+ i = WORDSIZE + GetKeyBufLength();
+ buffer->(i++) = ' ';
+ SetKeyBufLength(GetKeyBufLength()+1);
+ for (j=0 : j<GetKeyBufLength(buffer2) : i++,j++) {
+ buffer->i = buffer2->(j+WORDSIZE);
+ SetKeyBufLength(GetKeyBufLength()+1);
+ if (i-WORDSIZE == INPUT_BUFFER_LEN-1) break;
+ }
+
+ ! (3) we fill up the buffer with spaces, which is unnecessary, but may
+ ! help incorrectly-written interpreters to cope.
+
+ #Ifdef TARGET_ZCODE;
+ for (: i<INPUT_BUFFER_LEN : i++) buffer->i = ' ';
+ #Endif; ! TARGET_ZCODE
+
+ return REPARSE_CODE;
+
+]; ! end of NounDomain
+
+
+[ AskPlayer context i j k l first_word answer_words marker;
+ ! Now we print up the question, using the equivalence classes as worked
+ ! out by Adjudicate() so as not to repeat ourselves on plural objects...
+
+ asking_player = true;
+ if (context == CREATURE_TOKEN) L__M(##Miscellany, 45);
+ else L__M(##Miscellany, 46);
+
+ j = number_of_classes; marker = 0;
+ for (i=1 : i<=number_of_classes : i++) {
+ while (((match_classes-->marker) ~= i) && ((match_classes-->marker) ~= -i)) marker++;
+ k = match_list-->marker;
+
+ if (match_classes-->marker > 0) print (the) k; else print (a) k;
+
+ if (i < j-1) print (string) COMMA__TX;
+ if (i == j-1) print (SerialComma) j, (string) OR__TX;
+ }
+ L__M(##Miscellany, 57);
+
+ ! ...and get an answer:
+
+ .WhichOne;
+ #Ifdef TARGET_ZCODE;
+ for (i=WORDSIZE : i<INPUT_BUFFER_LEN : i++) buffer2->i = ' ';
+ #Endif; ! TARGET_ZCODE
+ answer_words = Keyboard(buffer2, parse2);
+
+ first_word = WordValue(1, parse2);
+ asking_player = false;
+
+ ! Take care of "all", because that does something too clever here to do
+ ! later on:
+
+ if (first_word == ALL1__WD or ALL2__WD or ALL3__WD or ALL4__WD or ALL5__WD) {
+ if (context == MULTI_TOKEN or MULTIHELD_TOKEN or MULTIEXCEPT_TOKEN or MULTIINSIDE_TOKEN) {
+ l = multiple_object-->0;
+ for (i=0 : i<number_matched && l+i<63 : i++) {
+ k = match_list-->i;
+ multiple_object-->(i+1+l) = k;
+ }
+ multiple_object-->0 = i+l;
+ rtrue;
+ }
+ L__M(##Miscellany, 47);
+ jump WhichOne;
+ }
+
+ ! If the first word of the reply can be interpreted as a verb, then
+ ! assume that the player has ignored the question and given a new
+ ! command altogether.
+ ! (This is one time when it's convenient that the directions are
+ ! not themselves verbs - thus, "north" as a reply to "Which, the north
+ ! or south door" is not treated as a fresh command but as an answer.)
+
+ #Ifdef LanguageIsVerb;
+ if (first_word == 0) {
+ j = wn; first_word = LanguageIsVerb(buffer2, parse2, 1); wn = j;
+ }
+ #Endif; ! LanguageIsVerb
+ if (first_word) {
+ if (((first_word->#dict_par1) & DICT_VERB) && ~~LanguageVerbMayBeName(first_word)) {
+ CopyBuffer(buffer, buffer2);
+ return REPARSE_CODE;
+ }
+ if (NumberWords(parse2) > 2) {
+ j = WordValue(2, parse2);
+ k = WordValue(3, parse2);
+ if (j == ',//' && k && (k->#dict_par1) & DICT_VERB) {
+ CopyBuffer(buffer, buffer2);
+ return REPARSE_CODE;
+ }
+ }
+ }
+
+ ! Now we insert the answer into the original typed command, as
+ ! words additionally describing the same object
+ ! (eg, > take red button
+ ! Which one, ...
+ ! > music
+ ! becomes "take music red button". The parser will thus have three
+ ! words to work from next time, not two.)
+
+ k = WordAddress(match_from) - buffer;
+ l = GetKeyBufLength(buffer2) +1;
+ for (j=buffer + INPUT_BUFFER_LEN - 1 : j>=buffer+k+l : j--) j->0 = j->(-l);
+ for (i=0 : i<l : i++) buffer->(k+i) = buffer2->(WORDSIZE+i);
+ buffer->(k+l-1) = ' ';
+ SetKeyBufLength(GetKeyBufLength() + l);
+
+ ! Having reconstructed the input, we warn the parser accordingly
+ ! and get out.
+
+ return REPARSE_CODE;
+];
+
+
+! ----------------------------------------------------------------------------
+! The Adjudicate routine tries to see if there is an obvious choice, when
+! faced with a list of objects (the match_list) each of which matches the
+! player's specification equally well.
+!
+! To do this it makes use of the context (the token type being worked on).
+! It counts up the number of obvious choices for the given context
+! (all to do with where a candidate is, except for 6 (animate) which is to
+! do with whether it is animate or not);
+!
+! if only one obvious choice is found, that is returned;
+!
+! if we are in indefinite mode (don't care which) one of the obvious choices
+! is returned, or if there is no obvious choice then an unobvious one is
+! made;
+!
+! at this stage, we work out whether the objects are distinguishable from
+! each other or not: if they are all indistinguishable from each other,
+! then choose one, it doesn't matter which;
+!
+! otherwise, 0 (meaning, unable to decide) is returned (but remember that
+! the equivalence classes we've just worked out will be needed by other
+! routines to clear up this mess, so we can't economise on working them
+! out).
+!
+! Returns -1 if an error occurred
+! ----------------------------------------------------------------------------
+
+Constant SCORE__CHOOSEOBJ = 1000;
+Constant SCORE__IFGOOD = 500;
+Constant SCORE__UNCONCEALED = 100;
+Constant SCORE__BESTLOC = 60;
+Constant SCORE__NEXTBESTLOC = 40;
+Constant SCORE__NOTCOMPASS = 20;
+Constant SCORE__NOTSCENERY = 10;
+Constant SCORE__NOTACTOR = 5;
+Constant SCORE__GNA = 1;
+Constant SCORE__DIVISOR = 20;
+
+[ Adjudicate context i j k good_flag good_ones last n flag offset sovert;
+ #Ifdef DEBUG;
+ if (parser_trace >= 4) {
+ print " [Adjudicating match list of size ", number_matched, " in context ", context, "]^";
+ print " ";
+ if (indef_mode) {
+ print "indefinite type: ";
+ if (indef_type & OTHER_BIT) print "other ";
+ if (indef_type & MY_BIT) print "my ";
+ if (indef_type & THAT_BIT) print "that ";
+ if (indef_type & PLURAL_BIT) print "plural ";
+ if (indef_type & LIT_BIT) print "lit ";
+ if (indef_type & UNLIT_BIT) print "unlit ";
+ if (indef_owner ~= 0) print "owner:", (name) indef_owner;
+ new_line;
+ print " number wanted: ";
+ if (indef_wanted == 100) print "all"; else print indef_wanted;
+ new_line;
+ print " most likely GNAs of names: ", indef_cases, "^";
+ }
+ else print "definite object^";
+ }
+ #Endif; ! DEBUG
+
+ j = number_matched-1; good_ones = 0; last = match_list-->0;
+ for (i=0 : i<=j : i++) {
+ n = match_list-->i;
+ match_scores-->i = 0;
+
+ good_flag = false;
+
+ switch (context) {
+ HELD_TOKEN, MULTIHELD_TOKEN:
+ if (parent(n) == actor) good_flag = true;
+ MULTIEXCEPT_TOKEN:
+ if (advance_warning == -1) {
+ good_flag = true;
+ }
+ else {
+ if (n ~= advance_warning) good_flag = true;
+ }
+ MULTIINSIDE_TOKEN:
+ if (advance_warning == -1) {
+ if (parent(n) ~= actor) good_flag = true;
+ }
+ else {
+ if (n in advance_warning) good_flag = true;
+ }
+ CREATURE_TOKEN:
+ if (CreatureTest(n) == 1) good_flag = true;
+ default:
+ good_flag = true;
+ }
+
+ if (good_flag) {
+ match_scores-->i = SCORE__IFGOOD;
+ good_ones++; last = n;
+ }
+ }
+ if (good_ones == 1) return last;
+
+ ! If there is ambiguity about what was typed, but it definitely wasn't
+ ! animate as required, then return anything; higher up in the parser
+ ! a suitable error will be given. (This prevents a question being asked.)
+
+ if (context == CREATURE_TOKEN && good_ones == 0) return match_list-->0;
+
+ if (indef_mode == 0) indef_type=0;
+
+ ScoreMatchL(context);
+ if (number_matched == 0) return -1;
+
+ if (indef_mode == 1 && indef_type & PLURAL_BIT ~= 0) {
+ if (context ~= MULTI_TOKEN or MULTIHELD_TOKEN or MULTIEXCEPT_TOKEN
+ or MULTIINSIDE_TOKEN) {
+ etype = MULTI_PE;
+ return -1;
+ }
+ i = 0; offset = multiple_object-->0; sovert = -1;
+ for (j=BestGuess() : j~=-1 && i<indef_wanted && i+offset<63 : j=BestGuess()) {
+ flag = 1;
+ if (j has concealed or worn) flag = 0;
+ if (sovert == -1) sovert = bestguess_score/SCORE__DIVISOR;
+ else {
+ if (indef_wanted == 100 && bestguess_score/SCORE__DIVISOR < sovert)
+ flag = 0;
+ }
+ if (context == MULTIHELD_TOKEN or MULTIEXCEPT_TOKEN && parent(j) ~= actor)
+ flag = 0;
+ #Ifdef TRADITIONAL_TAKE_ALL;
+ if (action_to_be == ##Take or ##Remove && parent(j) == actor)
+ flag = 0;
+ #Ifnot;
+ if (action_to_be == ##Take or ##Remove &&
+ (j has animate or scenery or static || parent(j) == actor))
+ flag = 0;
+ #Endif; ! TRADITIONAL_TAKE_ALL
+ #Ifdef NO_TAKE_ALL;
+ if (take_all_rule == 2 && match_length == 0) flag = 0;
+ #Endif; ! NO_TAKE_ALL
+ n = ChooseObjects(j, flag);
+ if (n == 0) n = LibraryExtensions.RunWhile(ext_chooseobjects, 0, j, flag);
+ switch (n) {
+ 2: flag = 0; ! forcing rejection
+ 1: flag = 1; ! forcing acceptance
+ !0: ! going with parser's decision
+ }
+ if (flag == 1) {
+ i++; multiple_object-->(i+offset) = j;
+ #Ifdef DEBUG;
+ if (parser_trace >= 4) print " Accepting it^";
+ #Endif; ! DEBUG
+ }
+ else {
+ i = i;
+ #Ifdef DEBUG;
+ if (parser_trace >= 4) print " Rejecting it^";
+ #Endif; ! DEBUG
+ }
+ }
+ if (i < indef_wanted && indef_wanted < 100) {
+ etype = TOOFEW_PE; multi_wanted = indef_wanted;
+ multi_had=i;
+ return -1;
+ }
+ multiple_object-->0 = i+offset;
+ multi_context = context;
+ #Ifdef DEBUG;
+ if (parser_trace >= 4)
+ print " Made multiple object of size ", i, "]^";
+ #Endif; ! DEBUG
+ return 1;
+ }
+
+ for (i=0 : i<number_matched : i++) match_classes-->i = 0;
+
+ n = 1;
+ for (i=0 : i<number_matched : i++)
+ if (match_classes-->i == 0) {
+ match_classes-->i = n++; flag = 0;
+ for (j=i+1 : j<number_matched : j++)
+ if (match_classes-->j == 0 && Identical(match_list-->i, match_list-->j) == 1) {
+ flag=1;
+ match_classes-->j = match_classes-->i;
+ }
+ if (flag == 1) match_classes-->i = 1-n;
+ }
+ n--; number_of_classes = n;
+
+ #Ifdef DEBUG;
+ if (parser_trace >= 4) {
+ print " Grouped into ", n, " possibilities by name:^";
+ for (i=0 : i<number_matched : i++)
+ if (match_classes-->i > 0)
+ print " ", (The) match_list-->i, " (", match_list-->i, ") --- group ",
+ match_classes-->i, "^";
+ }
+ #Endif; ! DEBUG
+ if (n == 1) dont_infer = true;
+
+ if (indef_mode == 0) {
+ ! Is there now a single highest-scoring object?
+ i = SingleBestGuess();
+ if (i >= 0) {
+
+ #Ifdef DEBUG;
+ if (parser_trace >= 4) print " Single best-scoring object returned.]^";
+ #Endif; ! DEBUG
+ return i;
+ }
+ }
+
+ if (indef_mode == 0) {
+ if (n > 1) {
+ k = -1;
+ for (i=0 : i<number_matched : i++) {
+ if (match_scores-->i > k) {
+ k = match_scores-->i;
+ j = match_classes-->i; j = j*j;
+ flag = 0;
+ }
+ else
+ if (match_scores-->i == k) {
+ if ((match_classes-->i) * (match_classes-->i) ~= j)
+ flag = 1;
+ }
+ }
+
+ if (flag) {
+ if(match_length == 1) {
+ k = 0;
+ for (i=1 : i<=number_of_classes : i++) {
+ while ((match_classes-->k) ~= i or -i) k++;
+ j = match_list-->k;
+
+ if(MatchWord(j, match_from)) {
+ no_infer_message = true;
+ return j;
+ }
+ }
+ }
+ #Ifdef DEBUG;
+ if (parser_trace >= 4) print " Unable to choose best group, so ask player.]^";
+ #Endif; ! DEBUG
+ return 0;
+ }
+ #Ifdef DEBUG;
+ if (parser_trace >= 4) print " Best choices are all from the same group.^";
+ #Endif; ! DEBUG
+ }
+ }
+
+ ! When the player is really vague, or there's a single collection of
+ ! indistinguishable objects to choose from, choose the one the player
+ ! most recently acquired, or if the player has none of them, then
+ ! the one most recently put where it is.
+
+ return BestGuess();
+
+]; ! Adjudicate
+
+! ----------------------------------------------------------------------------
+! ReviseMulti revises the multiple object which already exists, in the
+! light of information which has come along since then (i.e., the second
+! parameter). It returns a parser error number, or else 0 if all is well.
+! This only ever throws things out, never adds new ones.
+! ----------------------------------------------------------------------------
+
+[ ReviseMulti second_p i low;
+ #Ifdef DEBUG;
+ if (parser_trace >= 4) print " Revising multiple object list of size ", multiple_object-->0,
+ " with 2nd ", (name) second_p, "^";
+ #Endif; ! DEBUG
+
+ if (multi_context == MULTIEXCEPT_TOKEN or MULTIINSIDE_TOKEN) {
+ for (i=1,low=0 : i<=multiple_object-->0 : i++) {
+ if ( (multi_context==MULTIEXCEPT_TOKEN && multiple_object-->i ~= second_p) ||
+ (multi_context==MULTIINSIDE_TOKEN && multiple_object-->i in second_p)) {
+ low++;
+ multiple_object-->low = multiple_object-->i;
+ }
+ }
+ multiple_object-->0 = low;
+ }
+
+ if (multi_context == MULTI_TOKEN && action_to_be == ##Take) {
+ for (i=1,low=0 : i<=multiple_object-->0 : i++)
+ if (ScopeCeiling(multiple_object-->i)==ScopeCeiling(actor)) low++;
+ #Ifdef DEBUG;
+ if (parser_trace >= 4) print " Token 2 plural case: number with actor ", low, "^";
+ #Endif; ! DEBUG
+ if (take_all_rule == 2 || low > 0) {
+ for (i=1,low=0 : i<=multiple_object-->0 : i++) {
+ if (ScopeCeiling(multiple_object-->i) == ScopeCeiling(actor)) {
+ low++;
+ multiple_object-->low = multiple_object-->i;
+ }
+ }
+ multiple_object-->0 = low;
+ }
+ }
+
+ i = multiple_object-->0;
+ #Ifdef DEBUG;
+ if (parser_trace >= 4) print " Done: new size ", i, "^";
+ #Endif; ! DEBUG
+ if (i == 0) return NOTHING_PE;
+ return 0;
+];
+
+! ----------------------------------------------------------------------------
+! ScoreMatchL scores the match list for quality in terms of what the
+! player has vaguely asked for. Points are awarded for conforming with
+! requirements like "my", and so on. Remove from the match list any
+! entries which fail the basic requirements of the descriptors.
+! ----------------------------------------------------------------------------
+
+[ ScoreMatchL context its_owner its_score obj i j threshold met a_s l_s;
+! if (indef_type & OTHER_BIT ~= 0) threshold++;
+ if (indef_type & MY_BIT ~= 0) threshold++;
+ if (indef_type & THAT_BIT ~= 0) threshold++;
+ if (indef_type & LIT_BIT ~= 0) threshold++;
+ if (indef_type & UNLIT_BIT ~= 0) threshold++;
+ if (indef_owner ~= nothing) threshold++;
+
+ #Ifdef DEBUG;
+ if (parser_trace >= 4) print " Scoring match list: indef mode ", indef_mode, " type ",
+ indef_type, ", satisfying ", threshold, " requirements:^";
+ #Endif; ! DEBUG
+
+ if (action_to_be ~= ##Take)
+ a_s = SCORE__NEXTBESTLOC;
+ l_s = SCORE__BESTLOC;
+ if (context == HELD_TOKEN or MULTIHELD_TOKEN or MULTIEXCEPT_TOKEN) {
+ a_s = SCORE__BESTLOC; l_s = SCORE__NEXTBESTLOC;
+ }
+
+ for (i=0 : i<number_matched : i++) {
+ obj = match_list-->i; its_owner = parent(obj); its_score=0; met=0;
+
+ ! if (indef_type & OTHER_BIT ~= 0
+ ! && obj ~= itobj or himobj or herobj) met++;
+ if (indef_type & MY_BIT ~= 0 && its_owner == actor) met++;
+ if (indef_type & THAT_BIT ~= 0 && its_owner == actors_location) met++;
+ if (indef_type & LIT_BIT ~= 0 && obj has light) met++;
+ if (indef_type & UNLIT_BIT ~= 0 && obj hasnt light) met++;
+ if (indef_owner ~= 0 && its_owner == indef_owner) met++;
+
+ if (met < threshold) {
+ #Ifdef DEBUG;
+ if (parser_trace >= 4) print " ", (The) match_list-->i, " (", match_list-->i, ") in ",
+ (the) its_owner, " is rejected (doesn't match descriptors)^";
+ #Endif; ! DEBUG
+ match_list-->i = -1;
+ }
+ else {
+ its_score = 0;
+ if (obj hasnt concealed) its_score = SCORE__UNCONCEALED;
+
+ if (its_owner == actor) its_score = its_score + a_s;
+ else
+ if (its_owner == actors_location) its_score = its_score + l_s;
+ else {
+ #Ifdef TRADITIONAL_TAKE_ALL;
+ if (its_owner ~= Compass) its_score = its_score + SCORE__NOTCOMPASS;
+ #Ifnot;
+ if (its_owner ~= Compass)
+ if (take_all_rule && its_owner &&
+ its_owner has static or scenery &&
+ (its_owner has supporter ||
+ (its_owner has container && its_owner has open)))
+ its_score = its_score + l_s;
+ else
+ its_score = its_score + SCORE__NOTCOMPASS;
+ #Endif; ! TRADITIONAL_TAKE_ALL
+ }
+ j = ChooseObjects(obj, 2);
+ if (j == 0) j = LibraryExtensions.RunAll(ext_chooseobjects, obj, 2);
+ its_score = its_score + SCORE__CHOOSEOBJ * j;
+
+ if (obj hasnt scenery) its_score = its_score + SCORE__NOTSCENERY;
+ if (obj ~= actor) its_score = its_score + SCORE__NOTACTOR;
+
+ ! A small bonus for having the correct GNA,
+ ! for sorting out ambiguous articles and the like.
+
+ if (indef_cases & (PowersOfTwo_TB-->(GetGNAOfObject(obj))))
+ its_score = its_score + SCORE__GNA;
+
+ match_scores-->i = match_scores-->i + its_score;
+ #Ifdef DEBUG;
+ if (parser_trace >= 4) print " ", (The) match_list-->i, " (", match_list-->i,
+ ") in ", (the) its_owner, " : ", match_scores-->i, " points^";
+ #Endif; ! DEBUG
+ }
+ }
+
+ for (i=0 : i<number_matched : i++) {
+ while (match_list-->i == -1) {
+ if (i == number_matched-1) { number_matched--; break; }
+ for (j=i : j<number_matched-1 : j++) {
+ match_list-->j = match_list-->(j+1);
+ match_scores-->j = match_scores-->(j+1);
+ }
+ number_matched--;
+ }
+ }
+];
+
+! ----------------------------------------------------------------------------
+! BestGuess makes the best guess it can out of the match list, assuming that
+! everything in the match list is textually as good as everything else;
+! however it ignores items marked as -1, and so marks anything it chooses.
+! It returns -1 if there are no possible choices.
+! ----------------------------------------------------------------------------
+
+[ BestGuess earliest its_score best i;
+ earliest = 0; best = -1;
+ for (i=0 : i<number_matched : i++) {
+ if (match_list-->i >= 0) {
+ its_score = match_scores-->i;
+ if (its_score > best) { best = its_score; earliest = i; }
+ }
+ }
+ #Ifdef DEBUG;
+ if (parser_trace >= 4)
+ if (best < 0) print " Best guess ran out of choices^";
+ else print " Best guess ", (the) match_list-->earliest, " (", match_list-->earliest, ")^";
+ #Endif; ! DEBUG
+ if (best < 0) return -1;
+ i = match_list-->earliest;
+ match_list-->earliest = -1;
+ bestguess_score = best;
+ return i;
+];
+
+! ----------------------------------------------------------------------------
+! SingleBestGuess returns the highest-scoring object in the match list
+! if it is the clear winner, or returns -1 if there is no clear winner
+! ----------------------------------------------------------------------------
+
+[ SingleBestGuess earliest its_score best i;
+ earliest = -1; best = -1000;
+ for (i=0 : i<number_matched : i++) {
+ its_score = match_scores-->i;
+ if (its_score == best) earliest = -1;
+ if (its_score > best) { best = its_score; earliest = match_list-->i; }
+ }
+ bestguess_score = best;
+ return earliest;
+];
+
+! ----------------------------------------------------------------------------
+! Identical decides whether or not two objects can be distinguished from
+! each other by anything the player can type. If not, it returns true.
+! ----------------------------------------------------------------------------
+
+[ Identical o1 o2 p1 p2 n1 n2 i j flag;
+ if (o1 == o2) rtrue; ! This should never happen, but to be on the safe side
+ if (o1 == 0 || o2 == 0) rfalse; ! Similarly
+ if (parent(o1) == Compass || parent(o2) == Compass) rfalse; ! Saves time
+
+ ! What complicates things is that o1 or o2 might have a parsing routine,
+ ! so the parser can't know from here whether they are or aren't the same.
+ ! If they have different parsing routines, we simply assume they're
+ ! different. If they have the same routine (which they probably got from
+ ! a class definition) then the decision process is as follows:
+ !
+ ! the routine is called (with self being o1, not that it matters)
+ ! with noun and second being set to o1 and o2, and action being set
+ ! to the fake action TheSame. If it returns -1, they are found
+ ! identical; if -2, different; and if >=0, then the usual method
+ ! is used instead.
+
+ if (o1.parse_name ~= 0 || o2.parse_name ~= 0) {
+ if (o1.parse_name ~= o2.parse_name) rfalse;
+ parser_action = ##TheSame; parser_one = o1; parser_two = o2;
+ j = wn; i = RunRoutines(o1,parse_name); wn = j;
+ if (i == -1) rtrue;
+ if (i == -2) rfalse;
+ }
+
+ ! This is the default algorithm: do they have the same words in their
+ ! "name" (i.e. property no. 1) properties. (Note that the following allows
+ ! for repeated words and words in different orders.)
+
+ p1 = o1.&1; n1 = (o1.#1)/WORDSIZE;
+ p2 = o2.&1; n2 = (o2.#1)/WORDSIZE;
+
+ ! for (i=0 : i<n1 : i++) { print (address) p1-->i, " "; } new_line;
+ ! for (i=0 : i<n2 : i++) { print (address) p2-->i, " "; } new_line;
+
+ for (i=0 : i<n1 : i++) {
+ flag = 0;
+ for (j=0 : j<n2 : j++)
+ if (p1-->i == p2-->j) flag = 1;
+ if (flag == 0) rfalse;
+ }
+
+ for (j=0 : j<n2 : j++) {
+ flag = 0;
+ for (i=0 : i<n1 : i++)
+ if (p1-->i == p2-->j) flag = 1;
+ if (flag == 0) rfalse;
+ }
+
+ ! print "Which are identical!^";
+ rtrue;
+];
+
+
+! ----------------------------------------------------------------------------
+! MatchWord matches a word to the name of an object. This is used to assume
+! that an object simply named "key" is meant when the player types TAKE KEY
+! rather than TAKE BRASS KEY.
+! ----------------------------------------------------------------------------
+
+[ MatchWord p_obj p_word_no len_name len_input start_input i;
+
+ p_word_no--;
+
+ PrintToBuffer(StorageForShortName, SHORTNAMEBUF_LEN, p_obj);
+ len_name = StorageForShortName --> 0;
+
+ if(len_name > 9) {
+ for(i = 9 : i < len_name : i++)
+ if(StorageForShortName -> (WORDSIZE + i) == 32) rfalse;
+ len_name = 9;
+ }
+
+#Ifdef TARGET_ZCODE;
+ start_input = (parse + 2) -> (4 * p_word_no + 3);
+ len_input = (parse + 2) -> (4 * p_word_no + 2);
+ if(len_input > 9) len_input = 9;
+ if(len_name ~= len_input) rfalse;
+ for(i = 0 : i < len_name : i++) {
+ if(StorageForShortName -> (WORDSIZE + i) ~= buffer -> (start_input + i))
+ rfalse;
+ }
+#Ifnot; ! TARGET_GLULX
+ start_input = parse --> (((p_word_no+1) * 3)) - 2;
+ len_input = parse --> ((p_word_no+1) * 3 - 1);
+ if(len_input > 9) len_input = 9;
+ if(len_name ~= len_input) rfalse;
+ for(i = 0 : i < len_name : i++) {
+ if(StorageForShortName -> (WORDSIZE + i) ~= buffer -> (start_input + i + 2))
+ rfalse;
+ }
+#Endif; ! TARGET_
+
+ rtrue;
+];
+
+
+! ----------------------------------------------------------------------------
+! PrintCommand reconstructs the command as it presently reads, from
+! the pattern which has been built up
+!
+! If from is 0, it starts with the verb: then it goes through the pattern.
+! The other parameter is "emptyf" - a flag: if 0, it goes up to pcount:
+! if 1, it goes up to pcount-1.
+!
+! Note that verbs and prepositions are printed out of the dictionary:
+! and that since the dictionary may only preserve the first six characters
+! of a word (in a V3 game), we have to hand-code the longer words needed.
+!
+! (Recall that pattern entries are 0 for "multiple object", 1 for "special
+! word", 2 to REPARSE_CODE-1 are object numbers and REPARSE_CODE+n means the
+! preposition n)
+! ----------------------------------------------------------------------------
+
+[ PrintCommand from i k spacing_flag;
+ #Ifdef LanguageCommand;
+ LanguageCommand(from);
+ i = k = spacing_flag = 0; ! suppress warning
+ #Ifnot;
+ if (from == 0) {
+ i = verb_word;
+ if (LanguageVerb(i) == 0 && PrintVerb(i) == false && LibraryExtensions.RunWhile(ext_printverb, false, i) == 0)
+ print (address) i;
+ from++; spacing_flag = true;
+ }
+
+ for (k=from : k<pcount : k++) {
+ i = pattern-->k;
+ if (i == PATTERN_NULL) continue;
+ if (spacing_flag) print (char) ' ';
+ if (i == 0) { print (string) THOSET__TX; jump TokenPrinted; }
+ if (i == 1) { print (string) THAT__TX; jump TokenPrinted; }
+ if (i >= REPARSE_CODE)
+ print (address) No__Dword(i-REPARSE_CODE);
+ else
+ if (i in Compass && LanguageVerbLikesAdverb(verb_word))
+ LanguageDirection (i.door_dir); ! the direction name as adverb
+ else
+ print (the) i;
+ .TokenPrinted;
+ spacing_flag = true;
+ }
+ #Endif; ! LanguageCommand
+];
+
+! ----------------------------------------------------------------------------
+! The CantSee routine returns a good error number for the situation where
+! the last word looked at didn't seem to refer to any object in context.
+!
+! The idea is that: if the actor is in a location (but not inside something
+! like, for instance, a tank which is in that location) then an attempt to
+! refer to one of the words listed as meaningful-but-irrelevant there
+! will cause "you don't need to refer to that in this game" rather than
+! "no such thing" or "what's 'it'?".
+! (The advantage of not having looked at "irrelevant" local nouns until now
+! is that it stops them from clogging up the ambiguity-resolving process.
+! Thus game objects always triumph over scenery.)
+! ----------------------------------------------------------------------------
+
+[ CantSee i w e;
+ if (scope_token ~= 0) {
+ scope_error = scope_token;
+ return ASKSCOPE_PE;
+ }
+
+ wn--; w = NextWord();
+ e = CANTSEE_PE;
+ if (w == pronoun_word) {
+ pronoun__word = pronoun_word; pronoun__obj = pronoun_obj;
+ e = ITGONE_PE;
+ }
+ i = actor; while (parent(i) ~= 0) i = parent(i);
+
+ wn--;
+ if (i has visited && Refers(i,wn) == 1) e = SCENERY_PE;
+ else {
+ Descriptors(); ! skip past THE etc
+ if (i has visited && Refers(i,wn) == 1) e = SCENERY_PE;
+ }
+
+ if (saved_ml)
+ saved_oops = num_desc + match_from + saved_ml;
+ else
+ saved_oops = num_desc + match_from + match_length;
+
+ wn++;
+ return e;
+];
+
+! ----------------------------------------------------------------------------
+! The MultiAdd routine adds object "o" to the multiple-object-list.
+!
+! This is only allowed to hold 63 objects at most, at which point it ignores
+! any new entries (and sets a global flag so that a warning may later be
+! printed if need be).
+! ----------------------------------------------------------------------------
+
+[ MultiAdd o i j;
+ i = multiple_object-->0;
+ if (i == 63) { toomany_flag = 1; rtrue; }
+ for (j=1 : j<=i : j++)
+ if (o == multiple_object-->j) rtrue;
+ i++;
+ multiple_object-->i = o;
+ multiple_object-->0 = i;
+];
+
+! ----------------------------------------------------------------------------
+! The MultiSub routine deletes object "o" from the multiple-object-list.
+!
+! It returns 0 if the object was there in the first place, and 9 (because
+! this is the appropriate error number in Parser()) if it wasn't.
+! ----------------------------------------------------------------------------
+
+[ MultiSub o i j k et;
+ i = multiple_object-->0; et = 0;
+ for (j=1 : j<=i : j++)
+ if (o == multiple_object-->j) {
+ for (k=j : k<=i : k++)
+ multiple_object-->k = multiple_object-->(k+1);
+ multiple_object-->0 = --i;
+ return et;
+ }
+ et = 9; return et;
+];
+
+! ----------------------------------------------------------------------------
+! The MultiFilter routine goes through the multiple-object-list and throws
+! out anything without the given attribute "attr" set.
+! ----------------------------------------------------------------------------
+
+[ MultiFilter attr i j o;
+
+ .MFiltl;
+
+ i = multiple_object-->0;
+ for (j=1 : j<=i : j++) {
+ o = multiple_object-->j;
+ if (o hasnt attr) {
+ MultiSub(o);
+ jump Mfiltl;
+ }
+ }
+];
+
+! ----------------------------------------------------------------------------
+! The UserFilter routine consults the user's filter (or checks on attribute)
+! to see what already-accepted nouns are acceptable
+! ----------------------------------------------------------------------------
+
+[ UserFilter obj;
+ if (token_filter > 0 && token_filter < 49) {
+ if (obj has (token_filter-1)) rtrue;
+ rfalse;
+ }
+ noun = obj;
+ return token_filter();
+];
+
+! ----------------------------------------------------------------------------
+! MoveWord copies word at2 from parse buffer b2 to word at1 in "parse"
+! (the main parse buffer)
+! ----------------------------------------------------------------------------
+
+#Ifdef TARGET_ZCODE;
+
+[ MoveWord at1 b2 at2 x y;
+ x = at1*2-1; y = at2*2-1;
+ parse-->x++ = b2-->y++;
+ parse-->x = b2-->y;
+];
+
+#Ifnot; ! TARGET_GLULX
+
+[ MoveWord at1 b2 at2 x y;
+ x = at1*3-2; y = at2*3-2;
+ parse-->x++ = b2-->y++;
+ parse-->x++ = b2-->y++;
+ parse-->x = b2-->y;
+];
+
+#Endif; ! TARGET_
+
+! ----------------------------------------------------------------------------
+! SearchScope domain1 domain2 context
+!
+! Works out what objects are in scope (possibly asking an outside routine),
+! but does not look at anything the player has typed.
+! ----------------------------------------------------------------------------
+
+[ SearchScope domain1 domain2 context i is;
+ i = 0;
+ ! Everything is in scope to the debugging commands
+
+ #Ifdef DEBUG;
+ if (scope_reason == PARSING_REASON
+ && LanguageVerbIsDebugging(verb_word)) {
+
+ #Ifdef TARGET_ZCODE;
+ for (i=selfobj : i<=top_object : i++)
+ if (i ofclass Object && (parent(i) == 0 || parent(i) ofclass Object))
+ PlaceInScope(i);
+ #Ifnot; ! TARGET_GLULX
+ objectloop (i)
+ if (i ofclass Object && (parent(i) == 0 || parent(i) ofclass Object))
+ PlaceInScope(i);
+ #Endif; ! TARGET_
+ rtrue;
+ }
+ #Endif; ! DEBUG
+
+ ! First, a scope token gets priority here:
+
+ if (scope_token ~= 0) {
+ scope_stage = 2;
+ if (scope_token()) rtrue;
+ }
+
+ ! Pick up everything in the location except the actor's possessions;
+ ! then go through those. (This ensures the actor's possessions are in
+ ! scope even in Darkness.)
+
+ if (context == MULTIINSIDE_TOKEN && advance_warning ~= -1) {
+ if (IsSeeThrough(advance_warning) == 1)
+ ScopeWithin(advance_warning, 0, context);
+ }
+ else {
+ ! Next, call any user-supplied routine adding things to the scope,
+ ! which may circumvent the usual routines altogether
+ ! if they return true:
+
+ if (actor == domain1 or domain2) {
+ is = InScope(actor);
+ if (is == false) is = LibraryExtensions.RunWhile(ext_inscope, false, actor);
+ if (is) rtrue;
+ }
+
+ if (domain1 ~= 0 && domain1 has supporter or container)
+ ScopeWithin_O(domain1, domain1, context);
+ ScopeWithin(domain1, domain2, context);
+ if (domain2 ~= 0 && domain2 has supporter or container)
+ ScopeWithin_O(domain2, domain2, context);
+ ScopeWithin(domain2, 0, context);
+ }
+
+ ! A special rule applies:
+ ! in Darkness as in light, the actor is always in scope to himself.
+
+ if (thedark == domain1 or domain2) {
+ ScopeWithin_O(actor, actor, context);
+ if (parent(actor) has supporter or container)
+ ScopeWithin_O(parent(actor), parent(actor), context);
+ }
+];
+
+! ----------------------------------------------------------------------------
+! IsSeeThrough is used at various places: roughly speaking, it determines
+! whether o being in scope means that the contents of o are in scope.
+! ----------------------------------------------------------------------------
+
+[ IsSeeThrough o;
+ if (o has supporter or transparent ||
+ (o has container && o has open))
+ rtrue;
+ rfalse;
+];
+
+! ----------------------------------------------------------------------------
+! PlaceInScope is provided for routines outside the library, and is not
+! called within the parser (except for debugging purposes).
+! ----------------------------------------------------------------------------
+
+[ PlaceInScope thing;
+ if (scope_reason~=PARSING_REASON or TALKING_REASON) {
+ DoScopeAction(thing); rtrue;
+ }
+ wn = match_from; TryGivenObject(thing); placed_in_flag = 1;
+];
+
+! ----------------------------------------------------------------------------
+! DoScopeAction
+! ----------------------------------------------------------------------------
+
+[ DoScopeAction thing s p1;
+ s = scope_reason; p1 = parser_one;
+ #Ifdef DEBUG;
+ if (parser_trace >= 6)
+ print "[DSA on ", (the) thing, " with reason = ", scope_reason,
+ " p1 = ", parser_one, " p2 = ", parser_two, "]^";
+ #Endif; ! DEBUG
+ switch (scope_reason) {
+ REACT_BEFORE_REASON:
+ if (thing.react_before == 0 or NULL) return;
+ #Ifdef DEBUG;
+ if (parser_trace >= 2)
+ print "[Considering react_before for ", (the) thing, "]^";
+ #Endif; ! DEBUG
+ if (parser_one == 0) parser_one = RunRoutines(thing, react_before);
+ REACT_AFTER_REASON:
+ if (thing.react_after == 0 or NULL) return;
+ #Ifdef DEBUG;
+ if (parser_trace >= 2)
+ print "[Considering react_after for ", (the) thing, "]^";
+ #Endif; ! DEBUG
+ if (parser_one == 0) parser_one = RunRoutines(thing, react_after);
+ EACH_TURN_REASON:
+ if (thing.each_turn == 0) return;
+ #Ifdef DEBUG;
+ if (parser_trace >= 2)
+ print "[Considering each_turn for ", (the) thing, "]^";
+ #Endif; ! DEBUG
+ PrintOrRun(thing, each_turn);
+ TESTSCOPE_REASON:
+ if (thing == parser_one) parser_two = 1;
+ LOOPOVERSCOPE_REASON:
+ parser_one(thing);
+ parser_one=p1;
+ }
+ scope_reason = s;
+];
+
+! ----------------------------------------------------------------------------
+! ScopeWithin looks for objects in the domain which make textual sense
+! and puts them in the match list. (However, it does not recurse through
+! the second argument.)
+! ----------------------------------------------------------------------------
+
+[ ScopeWithin domain nosearch context x y;
+ if (domain == 0) rtrue;
+
+ ! Special rule: the directions (interpreted as the 12 walls of a room) are
+ ! always in context. (So, e.g., "examine north wall" is always legal.)
+ ! (Unless we're parsing something like "all", because it would just slow
+ ! things down then, or unless the context is "creature".)
+
+ if (indef_mode==0 && domain==actors_location
+ && scope_reason==PARSING_REASON && context~=CREATURE_TOKEN)
+ ScopeWithin(Compass);
+
+ ! Look through the objects in the domain, avoiding "objectloop" in case
+ ! movements occur, e.g. when trying each_turn.
+
+ x = child(domain);
+ while (x ~= 0) {
+ y = sibling(x);
+ ScopeWithin_O(x, nosearch, context);
+ x = y;
+ }
+];
+
+[ ScopeWithin_O domain nosearch context i ad n;
+
+ ! If the scope reason is unusual, don't parse.
+
+ if (scope_reason ~= PARSING_REASON or TALKING_REASON) {
+ DoScopeAction(domain);
+ jump DontAccept;
+ }
+
+ ! "it" or "them" matches to the it-object only. (Note that (1) this means
+ ! that "it" will only be understood if the object in question is still
+ ! in context, and (2) only one match can ever be made in this case.)
+
+ if (match_from <= num_words) { ! If there's any text to match, that is
+ wn = match_from;
+ i = NounWord();
+ if (i == 1 && player == domain) MakeMatch(domain, 1);
+ if (i >= 2 && i < 128 && (LanguagePronouns-->i == domain)) MakeMatch(domain, 1);
+ }
+
+ ! Construing the current word as the start of a noun, can it refer to the
+ ! object?
+
+ wn = match_from;
+ if (TryGivenObject(domain) > 0)
+ if (indef_nspec_at > 0 && match_from ~= indef_nspec_at) {
+ ! This case arises if the player has typed a number in
+ ! which is hypothetically an indefinite descriptor:
+ ! e.g. "take two clubs". We have just checked the object
+ ! against the word "clubs", in the hope of eventually finding
+ ! two such objects. But we also backtrack and check it
+ ! against the words "two clubs", in case it turns out to
+ ! be the 2 of Clubs from a pack of cards, say. If it does
+ ! match against "two clubs", we tear up our original
+ ! assumption about the meaning of "two" and lapse back into
+ ! definite mode.
+
+ wn = indef_nspec_at;
+ if (TryGivenObject(domain) > 0) {
+ match_from = indef_nspec_at;
+ ResetDescriptors();
+ }
+ wn = match_from;
+ }
+
+ .DontAccept;
+
+ ! Shall we consider the possessions of the current object, as well?
+ ! Only if it's a container (so, for instance, if a dwarf carries a
+ ! sword, then "drop sword" will not be accepted, but "dwarf, drop sword"
+ ! will).
+ ! Also, only if there are such possessions.
+ !
+ ! Notice that the parser can see "into" anything flagged as
+ ! transparent - such as a dwarf whose sword you can get at.
+
+ if (child(domain) ~= 0 && domain ~= nosearch && IsSeeThrough(domain) == 1)
+ ScopeWithin(domain,nosearch,context);
+
+ ! Drag any extras into context
+
+ ad = domain.&add_to_scope;
+ if (ad ~= 0) {
+
+ ! Test if the property value is not an object.
+ #Ifdef TARGET_ZCODE;
+ i = (UnsignedCompare(ad-->0, top_object) > 0);
+ #Ifnot; ! TARGET_GLULX
+ i = (((ad-->0)->0) ~= $70);
+ #Endif; ! TARGET_
+
+ if (i) {
+ ats_flag = 2+context;
+ RunRoutines(domain, add_to_scope);
+ ats_flag = 0;
+ }
+ else {
+ n = domain.#add_to_scope;
+ for (i=0 : (WORDSIZE*i)<n : i++)
+ if (ad-->i)
+ ScopeWithin_O(ad-->i, 0, context);
+ }
+ }
+];
+
+[ AddToScope obj;
+ if (ats_flag >= 2)
+ ScopeWithin_O(obj, 0, ats_flag-2);
+ if (ats_flag == 1) {
+ if (HasLightSource(obj)==1) ats_hls = 1;
+ }
+];
+
+! ----------------------------------------------------------------------------
+! MakeMatch looks at how good a match is. If it's the best so far, then
+! wipe out all the previous matches and start a new list with this one.
+! If it's only as good as the best so far, add it to the list.
+! If it's worse, ignore it altogether.
+!
+! The idea is that "red panic button" is better than "red button" or "panic".
+!
+! number_matched (the number of words matched) is set to the current level
+! of quality.
+!
+! We never match anything twice, and keep at most 64 equally good items.
+! ----------------------------------------------------------------------------
+
+[ MakeMatch obj quality i;
+ #Ifdef DEBUG;
+ if (parser_trace >= 6) print " Match with quality ",quality,"^";
+ #Endif; ! DEBUG
+ if (token_filter ~= 0 && UserFilter(obj) == 0) {
+ #Ifdef DEBUG;
+ if (parser_trace >= 6) print " Match filtered out: token filter ", token_filter, "^";
+ #Endif; ! DEBUG
+ rtrue;
+ }
+ if (quality < match_length) rtrue;
+ if (quality > match_length) { match_length = quality; number_matched = 0; }
+ else {
+ if (number_matched >= MATCH_LIST_SIZE) rtrue;
+ for (i=0 : i<number_matched : i++)
+ if (match_list-->i == obj) rtrue;
+ }
+ match_list-->number_matched++ = obj;
+ #Ifdef DEBUG;
+ if (parser_trace >= 6) print " Match added to list^";
+ #Endif; ! DEBUG
+];
+
+! ----------------------------------------------------------------------------
+! TryGivenObject tries to match as many words as possible in what has been
+! typed to the given object, obj. If it manages any words matched at all,
+! it calls MakeMatch to say so, then returns the number of words (or 1
+! if it was a match because of inadequate input).
+! ----------------------------------------------------------------------------
+
+[ TryGivenObject obj threshold k w j;
+ #Ifdef DEBUG;
+ if (parser_trace >= 5) print " Trying ", (the) obj, " (", obj, ") at word ", wn, "^";
+ #Endif; ! DEBUG
+
+ dict_flags_of_noun = 0;
+
+ ! If input has run out then always match, with only quality 0 (this saves
+ ! time).
+
+ if (wn > num_words) {
+ if (indef_mode ~= 0)
+ dict_flags_of_noun = DICT_X654; ! Reject "plural" bit
+ MakeMatch(obj,0);
+ #Ifdef DEBUG;
+ if (parser_trace >= 5) print " Matched (0)^";
+ #Endif; ! DEBUG
+ return 1;
+ }
+
+ ! Ask the object to parse itself if necessary, sitting up and taking notice
+ ! if it says the plural was used:
+
+ if (obj.parse_name~=0) {
+ parser_action = NULL; j=wn;
+ k = RunRoutines(obj,parse_name);
+ if (k > 0) {
+ wn=j+k;
+
+ .MMbyPN;
+
+ if (parser_action == ##PluralFound)
+ dict_flags_of_noun = dict_flags_of_noun | DICT_PLUR;
+
+ if (dict_flags_of_noun & DICT_PLUR) {
+ if (~~allow_plurals) k = 0;
+ else {
+ if (indef_mode == 0) {
+ indef_mode = 1; indef_type = 0; indef_wanted = 0;
+ }
+ indef_type = indef_type | PLURAL_BIT;
+ if (indef_wanted == 0) indef_wanted = 100;
+ }
+ }
+
+ #Ifdef DEBUG;
+ if (parser_trace >= 5) print " Matched (", k, ")^";
+ #Endif; ! DEBUG
+ MakeMatch(obj,k);
+ return k;
+ }
+ if (k == 0) jump NoWordsMatch;
+ wn = j;
+ }
+
+ ! The default algorithm is simply to count up how many words pass the
+ ! Refers test:
+
+ parser_action = NULL;
+
+ w = NounWord();
+
+ if (w == 1 && player == obj) { k=1; jump MMbyPN; }
+
+ if (w >= 2 && w < 128 && (LanguagePronouns-->w == obj)) { k = 1; jump MMbyPN; }
+
+ j = --wn;
+ threshold = ParseNoun(obj);
+ if (threshold == -1) {
+ LibraryExtensions.ext_number_1 = wn; ! Set the "between calls" functionality to
+ LibraryExtensions.BetweenCalls = LibraryExtensions.RestoreWN;
+ threshold = LibraryExtensions.RunWhile(ext_parsenoun, -1, obj);
+ LibraryExtensions.BetweenCalls = 0; ! Turn off the "between calls" functionality
+ }
+ #Ifdef DEBUG;
+ if (threshold >= 0 && parser_trace >= 5) print " ParseNoun returned ", threshold, "^";
+ #Endif; ! DEBUG
+ ! Don't arbitrarily increase wn when ParseNoun() returns -1
+ if (threshold > 0) {
+ k = threshold;
+ wn = j + k;
+ jump MMbyPN;
+ }
+ ! Check wn instead of wn - 1
+ if (threshold == 0 || Refers(obj,wn) == 0) {
+ .NoWordsMatch;
+ if (indef_mode ~= 0) {
+ ! Restore wn to pre-ParseNoun() state
+ k = 0; parser_action = NULL; wn = j;
+ jump MMbyPN;
+ }
+ rfalse;
+ }
+
+ if (threshold < 0) {
+ ! Set threshold to reflect any words consumed by ParseNoun()
+ threshold = wn - j;
+ w = NextWord(); ! Ensure w contains actual first word of noun phrase
+ ! if ParseNoun() moved wn.
+ dict_flags_of_noun = (w->#dict_par1) & (DICT_X654+DICT_PLUR);!$$01110100;
+ while (Refers(obj, wn-1)) {
+ threshold++;
+ if (w)
+ dict_flags_of_noun = dict_flags_of_noun | ((w->#dict_par1) & (DICT_X654+DICT_PLUR));
+ w = NextWord();
+ }
+ }
+
+ k = threshold;
+ jump MMbyPN;
+];
+
+! ----------------------------------------------------------------------------
+! Refers works out whether the word at number wnum can refer to the object
+! obj, returning true or false. The standard method is to see if the
+! word is listed under "name" for the object, but this is more complex
+! in languages other than English.
+! ----------------------------------------------------------------------------
+
+[ Refers obj wnum wd k l m;
+ if (obj == 0 || wnum <= 0) rfalse;
+
+ #Ifdef LanguageRefers;
+ k = LanguageRefers(obj,wnum); if (k >= 0) return k;
+ #Endif; ! LanguageRefers
+
+ k = wn; wn = wnum; wd = NextWordStopped(); wn = k;
+
+ if (parser_inflection_func) {
+ k = parser_inflection(obj, wd);
+ if (k >= 0) return k;
+ m = -k;
+ }
+ else
+ m = parser_inflection;
+
+ k = obj.&m; l = (obj.#m)/WORDSIZE-1;
+ for (m=0 : m<=l : m++)
+ if (wd == k-->m) rtrue;
+ rfalse;
+];
+
+[ WordInProperty wd obj prop k l m;
+ k = obj.∝ l = (obj.#prop)/WORDSIZE-1;
+ for (m=0 : m<=l : m++)
+ if (wd == k-->m) rtrue;
+ rfalse;
+];
+
+[ DictionaryLookup b l i;
+ for (i=0 : i<l : i++) buffer2->(WORDSIZE+i) = b->i;
+ SetKeyBufLength(l, buffer2);
+ Tokenise__(buffer2, parse2);
+ return parse2-->1;
+];
+
+! ----------------------------------------------------------------------------
+! NounWord (which takes no arguments) returns:
+!
+! 0 if the next word is unrecognised or does not carry the "noun" bit in
+! its dictionary entry,
+! 1 if a word meaning "me",
+! the index in the pronoun table (plus 2) of the value field of a pronoun,
+! if the word is a pronoun,
+! the address in the dictionary if it is a recognised noun.
+!
+! The "current word" marker moves on one.
+! ----------------------------------------------------------------------------
+
+[ NounWord i j s;
+ i = NextWord();
+ if (i == 0) rfalse;
+ if (i == ME1__WD or ME2__WD or ME3__WD) return 1;
+ s = LanguagePronouns-->0;
+ for (j=1 : j<=s : j=j+3)
+ if (i == LanguagePronouns-->j)
+ return j+2;
+ if ((i->#dict_par1) & DICT_NOUN == 0) rfalse;
+ return i;
+];
+
+! ----------------------------------------------------------------------------
+! NextWord (which takes no arguments) returns:
+!
+! 0 if the next word is unrecognised,
+! comma_word if a comma
+! THEN1__WD if a full stop
+! or the dictionary address if it is recognised.
+! The "current word" marker is moved on.
+!
+! NextWordStopped does the same, but returns -1 when input has run out
+! ----------------------------------------------------------------------------
+
+#Ifdef TARGET_ZCODE;
+
+[ NextWord i j;
+ if (wn <= 0 || wn > parse->1) { wn++; rfalse; }
+ i = wn*2-1; wn++;
+ j = parse-->i;
+ if (j == ',//') j = comma_word;
+ if (j == './/') j = THEN1__WD;
+ return j;
+];
+
+[ NextWordStopped;
+ if (wn > parse->1) { wn++; return -1; }
+ return NextWord();
+];
+
+[ WordAddress wordnum p b; ! Absolute addr of 'wordnum' string in buffer
+ if (p==0) p=parse;
+ if (b==0) b=buffer;
+ return b + p->(wordnum*4+1);
+];
+
+[ WordLength wordnum p; ! Length of 'wordnum' string in buffer
+ if (p==0) p=parse;
+ return p->(wordnum*4);
+];
+
+[ WordValue wordnum p; ! Dictionary value of 'wordnum' string in buffer
+ if (p==0) p=parse;
+ return p-->(wordnum*2-1);
+];
+
+[ NumberWords p; ! Number of parsed strings in buffer
+ if (p==0) p=parse;
+ return p->1;
+];
+
+[ GetKeyBufLength b; ! Number of typed chars in buffer
+ if (b==0) b=buffer;
+ return b->1;
+];
+
+[ SetKeyBufLength n b; ! Update number of typed chars in buffer
+ if (b==0) b=buffer;
+ if (n > INPUT_BUFFER_LEN-WORDSIZE) n=INPUT_BUFFER_LEN-WORDSIZE;
+ b->1 = n;
+];
+
+#Ifnot; ! TARGET_GLULX
+
+[ NextWord i j;
+ if (wn <= 0 || wn > parse-->0) { wn++; rfalse; }
+ i = wn*3-2; wn++;
+ j = parse-->i;
+ if (j == ',//') j=comma_word;
+ if (j == './/') j=THEN1__WD;
+ return j;
+];
+
+[ NextWordStopped;
+ if (wn > parse-->0) {
+ wn++;
+ return -1;
+ }
+ return NextWord();
+];
+
+[ WordAddress wordnum p b; ! Absolute addr of 'wordnum' string in buffer
+ if (p==0) p=parse;
+ if (b==0) b=buffer;
+ return b + p-->(wordnum*3);
+];
+
+[ WordLength wordnum p; ! Length of 'wordnum' string in buffer
+ if (p==0) p=parse;
+ return p-->(wordnum*3-1);
+];
+
+[ WordValue wordnum p; ! Dictionary value of 'wordnum' string in buffer
+ if (p==0) p=parse;
+ return p-->(wordnum*3-2);
+];
+
+[ NumberWords p; ! Number of parsed strings in buffer
+ if (p==0) p=parse;
+ return p-->0;
+];
+
+[ GetKeyBufLength b; ! Number of typed chars in buffer
+ if (b==0) b=buffer;
+ return b-->0;
+];
+
+[ SetKeyBufLength n b; ! Update number of typed chars in buffer
+ if (b==0) b=buffer;
+ if (n > INPUT_BUFFER_LEN-WORDSIZE) n=INPUT_BUFFER_LEN-WORDSIZE;
+ b-->0 = n;
+];
+
+#Endif; ! TARGET_
+
+! ----------------------------------------------------------------------------
+! TryNumber is the only routine which really does any character-level
+! parsing, since that's normally left to the Z-machine.
+! It takes word number "wordnum" and tries to parse it as an (unsigned)
+! decimal number, returning
+!
+! -1000 if it is not a number
+! the number if it has between 1 and 4 digits
+! 10000 if it has 5 or more digits.
+!
+! (The danger of allowing 5 digits is that Z-machine integers are only
+! 16 bits long, and anyway this isn't meant to be perfect.)
+!
+! Using NumberWord, it also catches "one" up to "twenty".
+!
+! Note that a game can provide a ParseNumber routine which takes priority,
+! to enable parsing of odder numbers ("x45y12", say).
+! ----------------------------------------------------------------------------
+
+[ TryNumber wordnum i j c num len mul tot d digit;
+ i = wn; wn = wordnum; j = NextWord(); wn = i;
+ j = NumberWord(j);
+ if (j >= 1) return j;
+
+ num = WordAddress(wordnum); len = WordLength(wordnum);
+
+ tot = ParseNumber(num, len);
+ if (tot == 0) tot = LibraryExtensions.RunWhile(ext_parsenumber, 0, num, len);
+
+ if (tot ~= 0) return tot;
+
+ if (len >= 4) mul=1000;
+ if (len == 3) mul=100;
+ if (len == 2) mul=10;
+ if (len == 1) mul=1;
+
+ tot = 0; c = 0;
+
+ for (c = 0 : c < len : c++) {
+ digit=num->c;
+ if (digit == '0') { d = 0; jump digok; }
+ if (digit == '1') { d = 1; jump digok; }
+ if (digit == '2') { d = 2; jump digok; }
+ if (digit == '3') { d = 3; jump digok; }
+ if (digit == '4') { d = 4; jump digok; }
+ if (digit == '5') { d = 5; jump digok; }
+ if (digit == '6') { d = 6; jump digok; }
+ if (digit == '7') { d = 7; jump digok; }
+ if (digit == '8') { d = 8; jump digok; }
+ if (digit == '9') { d = 9; jump digok; }
+ return -1000;
+ .digok;
+ tot = tot+mul*d; mul = mul/10;
+ }
+ if (len > 4) tot=10000;
+ return tot;
+];
+
+! ----------------------------------------------------------------------------
+! AnyNumber is a general parsing routine which accepts binary, hexadecimal
+! and decimal numbers up to the full Zcode/Glulx ranges.
+! ----------------------------------------------------------------------------
+
+#Ifdef TARGET_ZCODE; ! decimal range is -32768 to 32767
+Constant MAX_DECIMAL_SIZE 5;
+Constant MAX_DECIMAL_BASE 3276;
+#Ifnot; ! TARGET_GLULX ! decimal range is -2147483648 to 2147483647
+Constant MAX_DECIMAL_SIZE 10;
+Constant MAX_DECIMAL_BASE 214748364;
+#Endif; ! TARGET_
+
+[ AnyNumber
+ wa we sign base digit digit_count num;
+
+ wa = WordAddress(wn); we = wa + WordLength(wn);
+ sign = 1; base = 10;
+ if (wa->0 == '-') { sign = -1; wa++; }
+ else {
+ if (wa->0 == '$') { base = 16; wa++; }
+ if (wa->0 == '$') { base = 2; wa++; }
+ }
+ if (wa >= we) return GPR_FAIL; ! no digits after -/$
+ while (wa->0 == '0') wa++; ! skip leading zeros
+ for (num=0,digit_count=1 : wa<we : wa++,digit_count++) {
+ switch (wa->0) {
+ '0' to '9': digit = wa->0 - '0';
+ 'A' to 'F': digit = wa->0 - 'A' + 10;
+ 'a' to 'f': digit = wa->0 - 'a' + 10;
+ default: return GPR_FAIL;
+ }
+ if (digit >= base) return GPR_FAIL;
+ switch (base) {
+ 16: if (digit_count > 2*WORDSIZE) return GPR_FAIL;
+ 2: if (digit_count > 8*WORDSIZE) return GPR_FAIL;
+ 10:
+ if (digit_count > MAX_DECIMAL_SIZE) return GPR_FAIL;
+ if (digit_count == MAX_DECIMAL_SIZE) {
+ if (num > MAX_DECIMAL_BASE) return GPR_FAIL;
+ if (num == MAX_DECIMAL_BASE) {
+ if (sign == 1 && digit > 7) return GPR_FAIL;
+ if (sign == -1 && digit > 8) return GPR_FAIL;
+ }
+ }
+ }
+ num = base*num + digit;
+ }
+ parsed_number = num * sign;
+ wn++;
+ return GPR_NUMBER;
+];
+
+! ----------------------------------------------------------------------------
+! GetGender returns 0 if the given animate object is female, and 1 if male
+! (not all games will want such a simple decision function!)
+! ----------------------------------------------------------------------------
+
+[ GetGender person;
+ if (person hasnt female) rtrue;
+ rfalse;
+];
+
+[ GetGNAOfObject obj case gender;
+ if (obj hasnt animate) case = 6;
+ if (obj has male) gender = male;
+ if (obj has female) gender = female;
+ if (obj has neuter) gender = neuter;
+ if (gender == 0) {
+ if (case == 0) gender = LanguageAnimateGender;
+ else gender = LanguageInanimateGender;
+ }
+ if (gender == female) case = case + 1;
+ if (gender == neuter) case = case + 2;
+ if (obj has pluralname) case = case + 3;
+ return case;
+];
+
+! ----------------------------------------------------------------------------
+! Converting between dictionary addresses and entry numbers
+! ----------------------------------------------------------------------------
+
+#Ifdef TARGET_ZCODE;
+
+[ Dword__No w dp dh;
+ dp = HDR_DICTIONARY-->0;
+ dh = dp->0 + 4;
+ dp = dp + dp->0 + 1;
+ return (w-(HDR_DICTIONARY-->0 + dh )) / (dp->0);
+];
+
+[ No__Dword n dp dh;
+ dp = HDR_DICTIONARY-->0;
+ dh = dp->0 + 4;
+ dp = dp + dp->0 + 1;
+ return HDR_DICTIONARY-->0 + dh + (dp->0 *n);
+];
+
+#Ifnot; ! TARGET_GLULX
+
+! In Glulx, dictionary entries *are* addresses.
+[ Dword__No w; return w; ];
+[ No__Dword n; return n; ];
+
+#Endif; ! TARGET_
+
+! ----------------------------------------------------------------------------
+! For copying buffers
+! ----------------------------------------------------------------------------
+
+#Ifdef TARGET_ZCODE;
+
+[ CopyBuffer bto bfrom i size;
+ size = bto->0;
+ for (i=1 : i<=size : i++) bto->i = bfrom->i;
+];
+
+#Ifnot; ! TARGET_GLULX
+
+[ CopyBuffer bto bfrom i;
+ for (i=0 : i<INPUT_BUFFER_LEN : i++) bto->i = bfrom->i;
+];
+
+#Endif; ! TARGET_
+
+! ----------------------------------------------------------------------------
+! Provided for use by language definition files
+! ----------------------------------------------------------------------------
+
+#Ifdef TARGET_ZCODE;
+
+[ LTI_Insert i ch b y;
+
+ ! Protect us from strict mode, as this isn't an array in quite the
+ ! sense it expects
+ b = buffer;
+
+ ! Insert character ch into buffer at point i.
+ ! Being careful not to let the buffer possibly overflow:
+ y = b->1;
+ if (y > b->0) y = b->0;
+
+ ! Move the subsequent text along one character:
+ for (y=y+2 : y>i : y--) b->y = b->(y-1);
+ b->i = ch;
+
+ ! And the text is now one character longer:
+ if (b->1 < b->0) (b->1)++;
+];
+
+#Ifnot; ! TARGET_GLULX
+
+[ LTI_Insert i ch b y;
+
+ ! Protect us from strict mode, as this isn't an array in quite the
+ ! sense it expects
+ b = buffer;
+
+ ! Insert character ch into buffer at point i.
+ ! Being careful not to let the buffer possibly overflow:
+ y = b-->0;
+ if (y > INPUT_BUFFER_LEN) y = INPUT_BUFFER_LEN;
+
+ ! Move the subsequent text along one character:
+ for (y=y+WORDSIZE : y>i : y--) b->y = b->(y-1);
+ b->i = ch;
+
+ ! And the text is now one character longer:
+ if (b-->0 < INPUT_BUFFER_LEN) (b-->0)++;
+];
+
+#Endif; ! TARGET_
+
+! ============================================================================
+
+[ PronounsSub x y c d;
+ L__M(##Pronouns, 1);
+
+ c = (LanguagePronouns-->0)/3;
+ if (player ~= selfobj) c++;
+
+ if (c == 0) return L__M(##Pronouns, 4);
+
+ for (x=1,d=0 : x<=LanguagePronouns-->0 : x=x+3) {
+ print "~", (address) LanguagePronouns-->x, "~ ";
+ y = LanguagePronouns-->(x+2);
+ if (y == NULL) L__M(##Pronouns, 3);
+ else {
+ L__M(##Pronouns, 2);
+ print (the) y;
+ }
+ d++;
+ if (d < c-1) print (string) COMMA__TX;
+ if (d == c-1) print (SerialComma) c, (string) AND__TX;
+ }
+ if (player ~= selfobj) {
+ print "~", (address) ME1__WD, "~ "; L__M(##Pronouns, 2);
+ c = player; player = selfobj;
+ print (the) c; player = c;
+ }
+ L__M(##Pronouns, 5);
+];
+
+[ SetPronoun dword value x;
+ for (x=1 : x<=LanguagePronouns-->0 : x=x+3)
+ if (LanguagePronouns-->x == dword) {
+ LanguagePronouns-->(x+2) = value; return;
+ }
+ RunTimeError(12);
+];
+
+[ PronounValue dword x;
+ for (x=1 : x<=LanguagePronouns-->0 : x=x+3)
+ if (LanguagePronouns-->x == dword)
+ return LanguagePronouns-->(x+2);
+ return 0;
+];
+
+[ ResetVagueWords obj; PronounNotice(obj); ];
+
+#Ifdef EnglishNaturalLanguage;
+
+[ PronounOldEnglish;
+ if (itobj ~= old_itobj) SetPronoun('it', itobj);
+ if (himobj ~= old_himobj) SetPronoun('him', himobj);
+ if (herobj ~= old_herobj) SetPronoun('her', herobj);
+ old_itobj = itobj; old_himobj = himobj; old_herobj = herobj;
+];
+
+#Endif; !EnglishNaturalLanguage
+
+[ PronounNotice obj x bm;
+ if (obj == player) return;
+
+ #Ifdef EnglishNaturalLanguage;
+ PronounOldEnglish();
+ #Endif; ! EnglishNaturalLanguage
+
+ bm = PowersOfTwo_TB-->(GetGNAOfObject(obj));
+
+ for (x=1 : x<=LanguagePronouns-->0 : x=x+3)
+ if (bm & (LanguagePronouns-->(x+1)) ~= 0)
+ LanguagePronouns-->(x+2) = obj;
+
+ #Ifdef EnglishNaturalLanguage;
+ itobj = PronounValue('it'); old_itobj = itobj;
+ himobj = PronounValue('him'); old_himobj = himobj;
+ herobj = PronounValue('her'); old_herobj = herobj;
+ #Endif; ! EnglishNaturalLanguage
+];
+
+! ============================================================================
+! End of the parser proper: the remaining routines are its front end.
+! ----------------------------------------------------------------------------
+
+Object InformLibrary "(Inform Library)"
+ with play [ i j k l;
+
+ #Ifdef TARGET_ZCODE;
+ ZZInitialise();
+ #Ifnot; ! TARGET_GLULX
+ GGInitialise();
+ #Endif; ! TARGET_
+
+ GamePrologue();
+ while (~~deadflag) { ! everything happens in this loop
+
+ #Ifdef EnglishNaturalLanguage;
+ PronounOldEnglish();
+ old_itobj = PronounValue('it');
+ old_himobj = PronounValue('him');
+ old_herobj = PronounValue('her');
+ #Endif; ! EnglishNaturalLanguage
+
+ .very__late__error;
+
+ if (score ~= last_score) {
+ if (notify_mode == 1) NotifyTheScore();
+ last_score = score;
+ }
+
+ .late__error;
+
+ inputobjs-->0 = 0; inputobjs-->1 = 0;
+ inputobjs-->2 = 0; inputobjs-->3 = 0; meta = false;
+
+ ! The Parser writes its results into inputobjs and meta,
+ ! a flag indicating a "meta-verb". This can only be set for
+ ! commands by the player, not for orders to others.
+
+ InformParser.parse_input(inputobjs);
+
+ action = inputobjs-->0;
+
+ ! --------------------------------------------------------------
+
+ ! Reverse "give fred biscuit" into "give biscuit to fred"
+
+ if (action == ##GiveR or ##ShowR) {
+ i = inputobjs-->2; inputobjs-->2 = inputobjs-->3; inputobjs-->3 = i;
+ if (action == ##GiveR) action = ##Give; else action = ##Show;
+ }
+
+ ! Convert "P, tell me about X" to "ask P about X"
+
+ if (action == ##Tell && inputobjs-->2 == player && actor ~= player) {
+ inputobjs-->2 = actor; actor = player; action = ##Ask;
+ }
+
+ ! Convert "ask P for X" to "P, give X to me"
+
+ if (action == ##AskFor && inputobjs-->2 ~= player && actor == player) {
+ actor = inputobjs-->2; inputobjs-->2 = inputobjs-->3;
+ inputobjs-->3 = player; action = ##Give;
+ }
+
+ ! For old, obsolete code: special_word contains the topic word
+ ! in conversation
+
+ if (action == ##Ask or ##Tell or ##Answer)
+ special_word = special_number1;
+
+ ! --------------------------------------------------------------
+
+ multiflag = false; onotheld_mode = notheld_mode; notheld_mode = false;
+ ! For implicit taking and multiple object detection
+
+ .begin__action;
+ inp1 = 0; inp2 = 0; i = inputobjs-->1;
+ if (i >= 1) inp1 = inputobjs-->2;
+ if (i >= 2) inp2 = inputobjs-->3;
+
+ ! inp1 and inp2 hold: object numbers, or 0 for "multiple object",
+ ! or 1 for "a number or dictionary address"
+
+ if (inp1 == 1) noun = special_number1; else noun = inp1;
+ if (inp2 == 1) {
+ if (inp1 == 1) second = special_number2;
+ else second = special_number1;
+ }
+ else second = inp2;
+
+ ! -------------------------------------------------------------
+
+!print "inp1: ", (name) inp1, "^";
+!print "inp2: ", (name) inp2, "^";
+!print "inputobjs-->1: ", (name) inputobjs-->1, "^";
+!print "inputobjs-->2: ", (name) inputobjs-->2, "^";
+!print "inputobjs-->3: ", (name) inputobjs-->3, "^";
+!print "noun: ", (name) noun, "^";
+!print "second: ", (name) second, "^";
+!print "actor: ", (name) actor, "^";
+!print "---^";
+
+ ! --------------------------------------------------------------
+ ! Generate the action...
+
+ if ((i == 0) ||
+ (i == 1 && inp1 ~= 0) ||
+ (i == 2 && inp1 ~= 0 && inp2 ~= 0)) {
+
+ if (actor ~= player) {
+ switch (self.actor_act(actor, action, noun, second)) {
+ ACTOR_ACT_ABORT_NOTUNDERSTOOD: jump begin__action;
+ default: jump turn__end;
+ }
+
+ }
+
+
+ self.begin_action(action, noun, second, 0);
+ jump turn__end;
+ }
+
+ ! ...unless a multiple object must be substituted. First:
+ ! (a) check the multiple list isn't empty;
+ ! (b) warn the player if it has been cut short because too long;
+ ! (c) generate a sequence of actions from the list
+ ! (stopping in the event of death or movement away).
+
+ multiflag = true;
+ j = multiple_object-->0;
+ if (j == 0) {
+ L__M(##Miscellany, 2);
+ jump late__error;
+ }
+ if (toomany_flag) {
+ toomany_flag = false;
+ L__M(##Miscellany, 1);
+ }
+ i = location;
+ for (k=1 : k<=j : k++) {
+ if (deadflag) break;
+ if (location ~= i) {
+ L__M(##Miscellany, 51);
+ break;
+ }
+ l = multiple_object-->k;
+ PronounNotice(l);
+ print (name) l, (string) COLON__TX, " ";
+ if (inp1 == 0) {
+ inp1 = l;
+ switch (self.actor_act(actor, action, l, second)) {
+ ACTOR_ACT_ABORT_NOTUNDERSTOOD: jump begin__action;
+ ACTOR_ACT_ABORT_ORDER: jump turn__end;
+ }
+ inp1 = 0;
+ }
+ else {
+ inp2 = l;
+ if (self.actor_act(actor, action, noun, l) == ACTOR_ACT_ABORT_NOTUNDERSTOOD)
+ jump begin__action;
+ inp2 = 0;
+ }
+ }
+
+ ! --------------------------------------------------------------
+
+ .turn__end;
+
+ ! No time passes if either (i) the verb was meta, or
+ ! (ii) we've only had the implicit take before the "real"
+ ! action to follow.
+
+ if (notheld_mode == 1) { NoteObjectAcquisitions(); continue; }
+ if (meta) continue;
+ if (~~deadflag) self.end_turn_sequence();
+ else if (START_MOVE ~= 1) turns++;
+ } ! end of while()
+
+ if (deadflag ~= 2 && AfterLife() == false)
+ LibraryExtensions.RunAll(ext_afterlife);
+ if (deadflag == 0) jump very__late__error;
+ GameEpilogue();
+ ], ! end of 'play' property
+
+ end_turn_sequence [;
+ AdvanceWorldClock(); if (deadflag) return;
+ RunTimersAndDaemons(); if (deadflag) return;
+ RunEachTurnProperties(); if (deadflag) return;
+ if (TimePasses() == 0) LibraryExtensions.RunAll(ext_timepasses);
+ if (deadflag) return;
+ AdjustLight(); if (deadflag) return;
+ NoteObjectAcquisitions();
+ ],
+
+ ! The first time we call self.actor_act(), set the fifth
+ ! parameter to true. Details can be seen in
+ ! 1d95759b1bd6674509d6cf9161e6db3da3831f10 and in Issues #23 and
+ ! #30 (Mantis 1813 and 1885)
+ actor_act [ p a n s ft j sp sa sn ss;
+ sp = actor; actor = p;
+ if (p ~= player) {
+ ! The player's "orders" property can refuse to allow
+ ! conversation here, by returning true. If not, the order is
+ ! sent to the other person's "orders" property. If that also
+ ! returns false, then: if it was a misunderstood command
+ ! anyway, it is converted to an Answer action (thus
+ ! "floyd, grrr" ends up as "say grrr to floyd"). If it was a
+ ! good command, it is finally offered to the Order: part of
+ ! the other person's "life" property, the old-fashioned
+ ! way of dealing with conversation.
+
+ sa = action; sn = noun; ss = second;
+ action = a; noun = n; second = s;
+ j = RunRoutines(player, orders);
+ if (j == 0) {
+ j = RunRoutines(actor, orders);
+ if (j == 0) {
+ if (action == ##NotUnderstood) {
+ inputobjs-->3 = actor; actor = player; action = ##Answer;
+ ! abort, not resetting action globals
+ return ACTOR_ACT_ABORT_NOTUNDERSTOOD;
+ }
+ if (RunLife(actor, ##Order) == 0) {
+ L__M(##Order, 1, actor);
+ if (~~ft)
+ return ACTOR_ACT_ABORT_ORDER;
+ }
+ }
+ }
+ action = sa; noun = sn; second = ss;
+ if (ft)
+ return ACTOR_ACT_ABORT_ORDER;
+ }
+ else
+ if (~~ft)
+ self.begin_action(a, n, s, 0);
+
+ actor = sp;
+ return ACTOR_ACT_OK;
+ ],
+
+ begin_action [ a n s source sa sn ss;
+ sa = action; sn = noun; ss = second;
+ action = a; noun = n; second = s;
+ #Ifdef DEBUG;
+ if (debug_flag & DEBUG_ACTIONS) TraceAction(source);
+ #Ifnot;
+ source = 0;
+ #Endif; ! DEBUG
+
+ #Iftrue (Grammar__Version == 1);
+ if ((meta || BeforeRoutines() == false) && action < 256) {
+ #Ifdef INFIX;
+ if (infix_verb) {
+ if (BeforeRoutines() == false)
+ ActionPrimitive();
+ } else ActionPrimitive();
+ #Ifnot;
+ ActionPrimitive();
+ #Endif;
+ }
+ #Ifnot;
+ if ((meta || BeforeRoutines() == false) && action < 4096) {
+ #Ifdef INFIX;
+ if (infix_verb) {
+ if (BeforeRoutines() == false)
+ ActionPrimitive();
+ } else ActionPrimitive();
+ #Ifnot;
+ ActionPrimitive();
+ #Endif;
+ }
+ #Endif; ! Grammar__Version
+ action = sa; noun = sn; second = ss;
+ ],
+ has proper;
+
+! ----------------------------------------------------------------------------
+! Routines called before and after main 'play' loop
+
+[ GamePrologue i j;
+ before_first_turn = true;
+ for (i=1 : i<=100 : i++) j = random(i);
+
+ ChangeDefault(cant_go, CANTGO__TX);
+
+ real_location = thedark;
+ player = selfobj; actor = player;
+ selfobj.capacity = MAX_CARRIED; ! ### change?
+
+ #Ifdef LanguageInitialise;
+ LanguageInitialise();
+ #Endif; ! LanguageInitialise
+
+ #Ifdef EnglishNaturalLanguage;
+ old_itobj = itobj; old_himobj = himobj; old_herobj = herobj;
+ #Endif;! EnglishNaturalLanguage
+
+ new_line;
+ LibraryExtensions.RunAll(ext_initialise);
+ j = Initialise();
+ last_score = score;
+ initial_lookmode = lookmode;
+
+ objectloop (i in player) give i moved ~concealed;
+ move player to location;
+ while (parent(location)) location = parent(location);
+ real_location = location;
+ MoveFloatingObjects();
+
+ actor = player; ! resync, because player may have been changed in Initialise()
+ actors_location = location;
+
+ lightflag = OffersLight(parent(player));
+ if (lightflag == 0) location = thedark;
+
+ if (j ~= 2) Banner();
+#Ifndef NOINITIAL_LOOK;
+ <Look>;
+#Endif;
+ before_first_turn = false;
+];
+
+[ GameEpilogue;
+ if (score ~= last_score) {
+ if (notify_mode == 1) NotifyTheScore();
+ last_score = score;
+ }
+ print "^^ ";
+ #Ifdef TARGET_ZCODE;
+ #IfV5; style bold; #Endif; ! V5
+ #Ifnot; ! TARGET_GLULX
+ glk_set_style(style_Alert);
+ #Endif; ! TARGET_
+ print "***";
+ switch (deadflag) {
+ 1: L__M(##Miscellany, 3);
+ 2: L__M(##Miscellany, 4);
+ default: print " ";
+ if (DeathMessage() == false)
+ LibraryExtensions.RunAll(ext_deathmessage);
+ print " ";
+ }
+ print "***";
+ #Ifdef TARGET_ZCODE;
+ #IfV5; style roman; #Endif; ! V5
+ #Ifnot; ! TARGET_GLULX
+ glk_set_style(style_Normal);
+ #Endif; ! TARGET_
+ print "^^";
+ #Ifndef NO_SCORE;
+ print "^";
+ #Endif; ! NO_SCORE
+ Epilogue();
+ ScoreSub();
+ DisplayStatus();
+ AfterGameOver();
+];
+
+! ----------------------------------------------------------------------------
+! Routines called at end of each turn
+
+[ AdvanceWorldClock;
+ turns++;
+ if (the_time ~= NULL) {
+ if (time_rate >= 0) the_time=the_time+time_rate;
+ else {
+ time_step--;
+ if (time_step == 0) {
+ the_time++;
+ time_step = -time_rate;
+ }
+ }
+ the_time = the_time % 1440;
+ }
+];
+
+[ RunTimersAndDaemons i j;
+ #Ifdef DEBUG;
+ if (debug_flag & DEBUG_TIMERS) {
+ for (i=0 : i<active_timers : i++) {
+ j = the_timers-->i;
+ if (j ~= 0) {
+ print (name) (j&~WORD_HIGHBIT), ": ";
+ if (j & WORD_HIGHBIT) print "daemon";
+ else
+ print "timer with ", j.time_left, " turns to go";
+ new_line;
+ }
+ }
+ }
+ #Endif; ! DEBUG
+
+ for (i=0 : i<active_timers : i++) {
+ if (deadflag) return;
+ j = the_timers-->i;
+ if (j ~= 0) {
+ if (j & WORD_HIGHBIT) RunRoutines(j&~WORD_HIGHBIT, daemon);
+ else {
+ if (j.time_left == 0) {
+ StopTimer(j);
+ RunRoutines(j, time_out);
+ }
+ else
+ j.time_left = j.time_left-1;
+ }
+ }
+ }
+];
+
+[ RunEachTurnProperties;
+ scope_reason = EACH_TURN_REASON; verb_word = 0;
+ DoScopeAction(location);
+ SearchScope(ScopeCeiling(player), player, 0);
+ scope_reason = PARSING_REASON;
+];
+
+! ----------------------------------------------------------------------------
+
+#Ifdef TARGET_ZCODE;
+
+[ ActionPrimitive; (#actions_table-->action)(); ];
+
+#Ifnot; ! TARGET_GLULX
+
+[ ActionPrimitive; (#actions_table-->(action+1))(); ];
+
+#Endif; ! TARGET_
+
+[ AfterGameOver i amus_ret;
+
+ .RRQPL;
+
+ L__M(##Miscellany,5);
+
+ .RRQL;
+
+ L__M(##Prompt);
+ #Ifdef TARGET_ZCODE;
+ #IfV3; read buffer parse; #Endif; ! V3
+ temp_global=0;
+ #IfV5; read buffer parse DrawStatusLine; #Endif; ! V5
+ #Ifnot; ! TARGET_GLULX
+ KeyboardPrimitive(buffer, parse);
+ #Endif; ! TARGET_
+ i = parse-->1;
+ if (i == QUIT1__WD or QUIT2__WD) {
+ #Ifdef TARGET_ZCODE;
+ quit;
+ #Ifnot; ! TARGET_GLULX
+ quit;
+ #Endif; ! TARGET_
+ }
+ if (i == RESTART__WD) {
+ #Ifdef TARGET_ZCODE;
+ @restart;
+ #Ifnot; ! TARGET_GLULX
+ @restart;
+ #Endif; ! TARGET_
+ }
+ if (i == RESTORE__WD) {
+ RestoreSub();
+ jump RRQPL;
+ }
+ if (i == FULLSCORE1__WD or FULLSCORE2__WD && TASKS_PROVIDED==0) {
+ new_line; FullScoreSub();
+ jump RRQPL;
+ }
+ if (deadflag == 2 && i == AMUSING__WD) {
+ amus_ret = false;
+ if (AMUSING_PROVIDED == 0) {
+ new_line;
+ amus_ret = Amusing();
+ }
+ if (amus_ret == false) LibraryExtensions.RunAll(ext_amusing);
+ jump RRQPL;
+ }
+ #IfV5;
+ if (i == UNDO1__WD or UNDO2__WD or UNDO3__WD) {
+ i = PerformUndo();
+ if (i == 0) jump RRQPL;
+ }
+ #Endif; ! V5
+ L__M(##Miscellany, 8);
+ jump RRQL;
+];
+
+[ NoteObjectAcquisitions i;
+ objectloop (i in player)
+ if (i hasnt moved) {
+ give i moved;
+ if (i has scored) {
+ score = score + OBJECT_SCORE;
+ things_score = things_score + OBJECT_SCORE;
+ }
+ }
+];
+
+! ----------------------------------------------------------------------------
+! R_Process is invoked by the <...> and <<...>> statements, whose syntax is:
+! <action [noun] [second]> ! traditional
+! <action [noun] [second], actor> ! introduced at compiler 6.33
+
+[ R_Process a n s p
+ s1 s2 s3;
+ s1 = inp1; s2 = inp2; s3 = actor;
+ inp1 = n; inp2 = s; if (p) actor = p; else actor = player;
+ InformLibrary.begin_action(a, n, s, 1);
+ inp1 = s1; inp2 = s2; actor = s3;
+];
+
+! ----------------------------------------------------------------------------
+
+[ TestScope obj act a al sr x y;
+ x = parser_one; y = parser_two;
+ parser_one = obj; parser_two = 0; a = actor; al = actors_location;
+ sr = scope_reason; scope_reason = TESTSCOPE_REASON;
+ if (act == 0) actor = player; else actor = act;
+ actors_location = ScopeCeiling(actor);
+ SearchScope(actors_location, actor, 0); scope_reason = sr; actor = a;
+ actors_location = al; parser_one = x; x = parser_two; parser_two = y;
+ return x;
+];
+
+[ LoopOverScope routine act x y a al;
+ x = parser_one; y = scope_reason; a = actor; al = actors_location;
+ parser_one = routine;
+ if (act == 0) actor = player; else actor = act;
+ actors_location = ScopeCeiling(actor);
+ scope_reason = LOOPOVERSCOPE_REASON;
+ SearchScope(actors_location, actor, 0);
+ parser_one = x; scope_reason = y; actor = a; actors_location = al;
+];
+
+[ BeforeRoutines rv;
+ if (GamePreRoutine()) rtrue;
+ if (rv == false) rv=LibraryExtensions.RunWhile(ext_gamepreroutine, 0);
+ if (rv) rtrue;
+ if (RunRoutines(player, orders)) rtrue;
+ scope_reason = REACT_BEFORE_REASON; parser_one = 0;
+ SearchScope(ScopeCeiling(player), player, 0);
+ scope_reason = PARSING_REASON;
+ if (parser_one) rtrue;
+ if (location && RunRoutines(location, before)) rtrue;
+ if (inp1 > 1 && RunRoutines(inp1, before)) rtrue;
+ rfalse;
+];
+
+[ AfterRoutines rv;
+ scope_reason = REACT_AFTER_REASON; parser_one = 0;
+ SearchScope(ScopeCeiling(player), player, 0); scope_reason = PARSING_REASON;
+ if (parser_one) rtrue;
+ if (location && RunRoutines(location, after)) rtrue;
+ if (inp1 > 1 && RunRoutines(inp1, after)) rtrue;
+ rv = GamePostRoutine();
+ if (rv == false) rv=LibraryExtensions.RunWhile(ext_gamepostroutine, false);
+ return rv;
+];
+
+[ RunLife a j;
+ #Ifdef DEBUG;
+ if (debug_flag & DEBUG_ACTIONS) TraceAction(2, j);
+ #Endif; ! DEBUG
+ reason_code = j; return RunRoutines(a,life);
+];
+
+[ ZRegion addr;
+ switch (metaclass(addr)) { ! Left over from Inform 5
+ nothing: return 0;
+ Object, Class: return 1;
+ Routine: return 2;
+ String: return 3;
+ }
+];
+
+[ PrintOrRun obj prop flag;
+ if (obj.#prop > WORDSIZE) return RunRoutines(obj, prop);
+ if (obj.prop == NULL) rfalse;
+ switch (metaclass(obj.prop)) {
+ Class, Object, nothing:
+ return RunTimeError(2,obj,prop);
+ String:
+ print (string) obj.prop;
+ if (flag == 0) new_line;
+ rtrue;
+ Routine:
+ return RunRoutines(obj, prop);
+ }
+];
+
+[ PrintOrRunVar var flag;
+ switch (metaclass(var)) {
+ Object:
+ print (name) var;
+ String:
+ print (string) var;
+ if (flag == 0) new_line;
+ Routine:
+ return var();
+ default:
+ print (char) '(', var, (char) ')';
+ }
+ rtrue;
+];
+
+[ ValueOrRun obj prop;
+ !### this is entirely unlikely to work. Does anyone care? (AP)
+ ! Well, it's certainly used three times in verblibm.h (RF)
+ ! Update: now not used (RF)
+ if (obj.prop < 256) return obj.prop;
+ return RunRoutines(obj, prop);
+];
+
+[ RunRoutines obj prop;
+ if (obj == thedark && prop ~= initial or short_name or description) obj = real_location;
+ if (obj.&prop == 0 && prop >= INDIV_PROP_START) rfalse;
+ return obj.prop();
+];
+
+#Ifdef TARGET_ZCODE;
+
+[ ChangeDefault prop val a b;
+ ! Use assembly-language here because -S compilation won't allow this:
+ @loadw 0 5 -> a;
+ b = prop-1;
+ @storew a b val;
+];
+
+#Ifnot; ! TARGET_GLULX
+
+[ ChangeDefault prop val;
+ ! Use assembly-language here because -S compilation won't allow this:
+ ! #cpv__start-->prop = val;
+ @astore #cpv__start prop val;
+];
+
+#Endif; ! TARGET_
+
+! ----------------------------------------------------------------------------
+
+[ StartTimer obj timer i;
+ for (i=0 : i<active_timers : i++)
+ if (the_timers-->i == obj) rfalse;
+ for (i=0 : i<active_timers : i++)
+ if (the_timers-->i == 0) jump FoundTSlot;
+ i = active_timers++;
+ if (i >= MAX_TIMERS) { RunTimeError(4); return; }
+ .FoundTSlot;
+ if (obj.&time_left == 0) { RunTimeError(5, obj, time_left); return; }
+ the_timers-->i = obj; obj.time_left = timer;
+];
+
+[ StopTimer obj i;
+ for (i=0 : i<active_timers : i++)
+ if (the_timers-->i == obj) jump FoundTSlot2;
+ rfalse;
+ .FoundTSlot2;
+ if (obj.&time_left == 0) { RunTimeError(5, obj, time_left); return; }
+ the_timers-->i = 0; obj.time_left = 0;
+];
+
+[ StartDaemon obj i;
+ for (i=0 : i<active_timers : i++)
+ if (the_timers-->i == WORD_HIGHBIT + obj) rfalse;
+ for (i=0 : i<active_timers : i++)
+ if (the_timers-->i == 0) jump FoundTSlot3;
+ i = active_timers++;
+ if (i >= MAX_TIMERS) RunTimeError(4);
+ .FoundTSlot3;
+ the_timers-->i = WORD_HIGHBIT + obj;
+];
+
+[ StopDaemon obj i;
+ for (i=0 : i<active_timers : i++)
+ if (the_timers-->i == WORD_HIGHBIT + obj) jump FoundTSlot4;
+ rfalse;
+ .FoundTSlot4;
+ the_timers-->i = 0;
+];
+
+! ----------------------------------------------------------------------------
+
+[ DisplayStatus;
+ if (sys_statusline_flag == 0) { sline1 = score; sline2 = turns; }
+ else { sline1 = the_time/60; sline2 = the_time%60;}
+];
+
+[ SetTime t s;
+ the_time = t; time_rate = s; time_step = 0;
+ if (s < 0) time_step = 0-s;
+];
+
+[ NotifyTheScore;
+ #Ifdef TARGET_GLULX;
+ glk_set_style(style_Note);
+ #Endif; ! TARGET_GLULX
+ print "^["; L__M(##Miscellany, 50, score-last_score); print ".]^";
+ #Ifdef TARGET_GLULX;
+ glk_set_style(style_Normal);
+ #Endif; ! TARGET_GLULX
+];
+
+! ----------------------------------------------------------------------------
+
+[ AdjustLight flag i;
+ i = lightflag;
+ lightflag = OffersLight(parent(player));
+
+ if (i == 0 && lightflag == 1) {
+ location = real_location;
+ if (flag == 0) <Look>;
+ }
+
+ if (i == 1 && lightflag == 0) {
+ real_location = location; location = thedark;
+ if (flag == 0) {
+ NoteArrival();
+ return L__M(##Miscellany, 9);
+ }
+ }
+ if (i == 0 && lightflag == 0) location = thedark;
+];
+
+[ OffersLight i j;
+ if (i == 0) rfalse;
+ if (i has light) rtrue;
+ objectloop (j in i)
+ if (HasLightSource(j) == 1) rtrue;
+ if (i has container) {
+ if (i has open || i has transparent)
+ return OffersLight(parent(i));
+ }
+ else {
+ if (i has enterable || i has transparent || i has supporter)
+ return OffersLight(parent(i));
+ }
+ rfalse;
+];
+
+[ HidesLightSource obj;
+ if (obj == player) rfalse;
+ if (obj has transparent or supporter) rfalse;
+ if (obj has container) return (obj hasnt open);
+ return (obj hasnt enterable);
+];
+
+[ HasLightSource i j ad;
+ if (i == 0) rfalse;
+ if (i has light) rtrue;
+ if (i has enterable || IsSeeThrough(i) == 1)
+ if (~~(HidesLightSource(i)))
+ objectloop (j in i)
+ if (HasLightSource(j) == 1) rtrue;
+ ad = i.&add_to_scope;
+ if (parent(i) ~= 0 && ad ~= 0) {
+ if (metaclass(ad-->0) == Routine) {
+ ats_hls = 0; ats_flag = 1;
+ RunRoutines(i, add_to_scope);
+ ats_flag = 0; if (ats_hls == 1) rtrue;
+ }
+ else {
+ for (j=0 : (WORDSIZE*j)<i.#add_to_scope : j++)
+ if (HasLightSource(ad-->j) == 1) rtrue;
+ }
+ }
+ rfalse;
+];
+
+[ ChangePlayer obj flag i;
+! if (obj.&number == 0) return RunTimeError(7, obj);
+
+ if (obj == nothing) obj = selfobj;
+ if (actor == player) actor=obj;
+ give player ~transparent ~concealed;
+ i = obj; while (parent(i) ~= 0) {
+ if (i has animate) give i transparent;
+ i = parent(i);
+ }
+ if (player == selfobj && player provides nameless && player.nameless == true) {
+ if (player provides narrative_voice) {
+ if (player.narrative_voice == 1) {
+ player.short_name = MYFORMER__TX;
+ (player.&name)-->0 = 'my';
+ (player.&name)-->1 = 'former';
+ (player.&name)-->2 = 'self';
+ } else if (player.narrative_voice == 2) {
+ player.short_name = FORMER__TX;
+ (player.&name)-->0 = 'my';
+ (player.&name)-->1 = 'former';
+ (player.&name)-->2 = 'self';
+ }
+ }
+ }
+
+
+ player = obj;
+
+ give player transparent concealed animate;
+ i = player; while (parent(i) ~= 0) i = parent(i);
+ location = i; real_location = location;
+ if (parent(player) == 0) return RunTimeError(10);
+ MoveFloatingObjects();
+ lightflag = OffersLight(parent(player));
+ if (lightflag == 0) location = thedark;
+ print_player_flag = flag;
+];
+
+! ----------------------------------------------------------------------------
+
+#Ifdef DEBUG;
+
+#Ifdef TARGET_ZCODE;
+
+[ DebugParameter w;
+ print w;
+ if (w >= 1 && w <= top_object) print " (", (name) w, ")";
+ if (UnsignedCompare(w, dict_start) >= 0 &&
+ UnsignedCompare(w, dict_end) < 0 &&
+ (w - dict_start) % dict_entry_size == 0)
+ print " ('", (address) w, "')";
+];
+
+[ DebugAction a anames;
+ #Iftrue (Grammar__Version == 1);
+ if (a >= 256) { print "<fake action ", a-256, ">"; return; }
+ #Ifnot;
+ if (a >= 4096) { print "<fake action ", a-4096, ">"; return; }
+ #Endif; ! Grammar__Version
+ anames = #identifiers_table;
+ anames = anames + 2*(anames-->0) + 2*48;
+ print (string) anames-->a;
+];
+
+[ DebugAttribute a anames;
+ if (a < 0 || a >= 48) print "<invalid attribute ", a, ">";
+ else {
+ anames = #identifiers_table; anames = anames + 2*(anames-->0);
+ print (string) anames-->a;
+ }
+];
+
+#Ifnot; ! TARGET_GLULX
+
+[ DebugParameter w endmem;
+ print w;
+ @getmemsize endmem;
+ if (w >= 1 && w < endmem) {
+ if (w->0 >= $70 && w->0 < $7F) print " (", (name) w, ")";
+ if (w->0 >= $60 && w->0 < $6F) print " ('", (address) w, "')";
+ }
+];
+
+[ DebugAction a str;
+ if (a >= 4096) { print "<fake action ", a-4096, ">"; return; }
+ if (a < 0 || a >= #identifiers_table-->7) print "<invalid action ", a, ">";
+ else {
+ str = #identifiers_table-->6;
+ str = str-->a;
+ if (str) print (string) str; else print "<unnamed action ", a, ">";
+ }
+];
+
+[ DebugAttribute a str;
+ if (a < 0 || a >= NUM_ATTR_BYTES*8) print "<invalid attribute ", a, ">";
+ else {
+ str = #identifiers_table-->4;
+ str = str-->a;
+ if (str) print (string) str; else print "<unnamed attribute ", a, ">";
+ }
+];
+
+#Endif; ! TARGET_
+
+[ TraceAction source ar;
+ if (source < 2) print "[ Action ", (DebugAction) action;
+ else {
+ if (ar == ##Order)
+ print "[ Order to ", (name) actor, ": ", (DebugAction) action;
+ else
+ print "[ Life rule ", (DebugAction) ar;
+ }
+ if (noun ~= 0) print " with noun ", (DebugParameter) noun;
+ if (second ~= 0) print " and second ", (DebugParameter) second;
+ if (source == 0) print " ";
+ if (source == 1) print " (from < > statement) ";
+ print "]^";
+];
+
+[ DebugToken token;
+ AnalyseToken(token);
+ switch (found_ttype) {
+ ILLEGAL_TT:
+ print "<illegal token number ", token, ">";
+ ELEMENTARY_TT:
+ switch (found_tdata) {
+ NOUN_TOKEN: print "noun";
+ HELD_TOKEN: print "held";
+ MULTI_TOKEN: print "multi";
+ MULTIHELD_TOKEN: print "multiheld";
+ MULTIEXCEPT_TOKEN: print "multiexcept";
+ MULTIINSIDE_TOKEN: print "multiinside";
+ CREATURE_TOKEN: print "creature";
+ SPECIAL_TOKEN: print "special";
+ NUMBER_TOKEN: print "number";
+ TOPIC_TOKEN: print "topic";
+ ENDIT_TOKEN: print "END";
+ }
+ PREPOSITION_TT:
+ print "'", (address) found_tdata, "'";
+ ROUTINE_FILTER_TT:
+ #Ifdef INFIX;
+ print "noun=", (InfixPrintPA) found_tdata;
+ #Ifnot;
+ print "noun=Routine(", found_tdata, ")";
+ #Endif; ! INFIX
+ ATTR_FILTER_TT:
+ print (DebugAttribute) found_tdata;
+ SCOPE_TT:
+ #Ifdef INFIX;
+ print "scope=", (InfixPrintPA) found_tdata;
+ #Ifnot;
+ print "scope=Routine(", found_tdata, ")";
+ #Endif; ! INFIX
+ GPR_TT:
+ #Ifdef INFIX;
+ print (InfixPrintPA) found_tdata;
+ #Ifnot;
+ print "Routine(", found_tdata, ")";
+ #Endif; ! INFIX
+ }
+];
+
+[ DebugGrammarLine pcount;
+ print " * ";
+ for (: line_token-->pcount ~= ENDIT_TOKEN : pcount++) {
+ if ((line_token-->pcount)->0 & $10) print "/ ";
+ print (DebugToken) line_token-->pcount, " ";
+ }
+ print "-> ", (DebugAction) action_to_be;
+ if (action_reversed) print " reverse";
+];
+
+#Ifdef TARGET_ZCODE;
+
+[ ShowVerbSub grammar lines j;
+ if (noun == 0 || ((noun->#dict_par1) & DICT_VERB) == 0)
+ "Try typing ~showverb~ and then the name of a verb.";
+ print "Verb";
+ if ((noun->#dict_par1) & DICT_META) print " meta";
+ for (j=dict_start : j<dict_end : j=j+dict_entry_size)
+ if (j->#dict_par2 == noun->#dict_par2)
+ print " '", (address) j, "'";
+ new_line;
+ grammar = (HDR_STATICMEMORY-->0)-->($ff-(noun->#dict_par2));
+ lines = grammar->0;
+ grammar++;
+ if (lines == 0) "has no grammar lines.";
+ for (: lines>0 : lines--) {
+ grammar = UnpackGrammarLine(grammar);
+ print " "; DebugGrammarLine(); new_line;
+ }
+];
+
+#Ifnot; ! TARGET_GLULX
+
+[ ShowVerbSub grammar lines i j wd dictlen entrylen;
+ if (noun == 0 || ((noun->#dict_par1) & DICT_VERB) == 0)
+ "Try typing ~showverb~ and then the name of a verb.";
+ print "Verb";
+ if ((noun->#dict_par1) & DICT_META) print " meta";
+ dictlen = #dictionary_table-->0;
+ entrylen = DICT_WORD_SIZE + 7;
+ for (j=0 : j<dictlen : j++) {
+ wd = #dictionary_table + WORDSIZE + entrylen*j;
+ if (wd->#dict_par2 == noun->#dict_par2)
+ print " '", (address) wd, "'";
+ }
+ new_line;
+ i = DictionaryWordToVerbNum(noun);
+ grammar = (#grammar_table)-->(i+1);
+ lines = grammar->0;
+ grammar++;
+ if (lines == 0) "has no grammar lines.";
+ for (: lines>0 : lines--) {
+ grammar = UnpackGrammarLine(grammar);
+ print " "; DebugGrammarLine(); new_line;
+ }
+];
+
+#Endif; ! TARGET_
+
+[ ShowObjSub c f l a n x numattr;
+ if (noun == 0) noun = location;
+ objectloop (c ofclass Class) if (noun ofclass c) { f++; l=c; }
+ if (f == 1) print (name) l, " ~"; else print "Object ~";
+ print (name) noun, "~ (", noun, ")";
+ if (parent(noun)) print " in ~", (name) parent(noun), "~ (", parent(noun), ")";
+ new_line;
+ if (f > 1) {
+ print " class ";
+ objectloop (c ofclass Class) if (noun ofclass c) print (name) c, " ";
+ new_line;
+ }
+ #Ifdef TARGET_ZCODE;
+ numattr = 48;
+ #Ifnot; ! TARGET_GLULX
+ numattr = NUM_ATTR_BYTES * 8;
+ #Endif; ! TARGET_
+ for (a=0,f=0 : a<numattr : a++) if (noun has a) f=1;
+ if (f) {
+ print " has ";
+ for (a=0 : a<numattr : a++) if (noun has a) print (DebugAttribute) a, " ";
+ new_line;
+ }
+ if (noun ofclass Class) return;
+
+ f=0;
+ #Ifdef TARGET_ZCODE;
+ l = #identifiers_table-->0;
+ #Ifnot; ! TARGET_GLULX
+ l = INDIV_PROP_START + #identifiers_table-->3;
+ #Endif; ! TARGET_
+ for (a=1 : a<=l : a++) {
+ if ((a ~= 2 or 3) && noun.&a) {
+ if (f == 0) { print " with "; f=1; }
+ print (property) a;
+ n = noun.#a;
+ for (c=0 : WORDSIZE*c<n : c++) {
+ print " ";
+ x = (noun.&a)-->c;
+ if (a == name) print "'", (address) x, "'";
+ else {
+ if (a == number or capacity or time_left) print x;
+ else {
+ switch (x) {
+ NULL: print "NULL";
+ 0: print "0";
+ 1: print "1";
+ default:
+ switch (metaclass(x)) {
+ Class, Object:
+ print (name) x;
+ String:
+ print "~", (string) x, "~";
+ Routine:
+ print "[...]";
+ }
+ print " (", x, ")";
+ }
+ }
+ }
+ }
+ print ",^ ";
+ }
+ }
+! if (f==1) new_line;
+];
+
+[ ShowDictSub_helper x; print (address) x; ];
+[ ShowDictSub
+ dp el ne f x y z;
+
+ #Ifdef TARGET_ZCODE;
+ dp = HDR_DICTIONARY-->0; ! start of dictionary
+ dp = dp + dp->0 + 1; ! skip over word-separators table
+ el = dp->0; dp = dp + 1; ! entry length
+ ne = dp-->0; dp = dp + WORDSIZE; ! number of entries
+ #Ifnot; ! TARGET_GLULX;
+ dp = #dictionary_table; ! start of dictionary
+ el = DICT_WORD_SIZE + 7; ! entry length
+ ne = dp-->0; dp = dp + WORDSIZE; ! number of entries
+ #Endif; ! TARGET_
+ ! dp now at first entry
+ wn = 2; x = NextWordStopped();
+ switch (x) {
+ 0:
+ "That word isn't in the dictionary.";
+ -1:
+ ; ! show all entries
+ THEN1__WD:
+ dp = './/'; ne = 1; ! show '.'
+ COMMA_WORD:
+ dp = ',//'; ne = 1; ! show ','
+ default:
+ dp = x; ne = 1; f = true; ! show specified entry, plus associated objects
+ }
+ for ( : ne-- : dp=dp+el) {
+ print (address) dp, " --> ";
+ x = dp->#dict_par1; ! flag bits
+ y = PrintToBuffer(StorageForShortName, SHORTNAMEBUF_LEN, ShowDictSub_helper, dp) + WORDSIZE;
+ for (z=WORDSIZE : z<y : z++) {
+ !if (x & DICT_NOUN) StorageForShortName->z = UpperCase(StorageForShortName->z);
+ if (y > WORDSIZE+1 && StorageForShortName->z == ' ' or '.' or ',') x = x | $8000;
+ print (char) StorageForShortName->z;
+ }
+ print " --> ";
+ if (x == 0)
+ print " no flags";
+ else {
+ !if (x & $0040) print " BIT_6";
+ !if (x & $0020) print " BIT_5";
+ !if (x & $0010) print " BIT_4";
+ if (x & $8000) print " UNTYPEABLE";
+ if (x & DICT_NOUN) print " noun";
+ if (x & DICT_PLUR) print "+plural";
+ if (x & DICT_VERB) print " verb";
+ if (x & DICT_META) print "+meta";
+ if (x & DICT_PREP) print " preposition";
+ if (f && (x & DICT_NOUN)) {
+ print " --> refers to these objects:";
+ objectloop (x)
+ if (WordInProperty(dp, x, name)) print "^ ", (name) x, " (", x, ")";
+ }
+ }
+ new_line;
+ }
+];
+
+#Endif; ! DEBUG
+
+! ----------------------------------------------------------------------------
+! Miscellaneous display routines used by DrawStatusLine and available for
+! user. Most of these vary according to which machine is being compiled to
+! ----------------------------------------------------------------------------
+
+#Ifdef TARGET_ZCODE;
+
+[ ClearScreen window;
+ switch (window) {
+ WIN_ALL: @erase_window -1;
+ WIN_STATUS: @erase_window 1;
+ WIN_MAIN: @erase_window 0;
+ }
+];
+
+#Iftrue (#version_number == 6);
+[ MoveCursorV6 line column charw; ! 1-based postion on text grid
+ @get_wind_prop 1 13 -> charw; ! font size
+ charw = charw & $FF;
+ line = 1 + charw*(line-1);
+ column = 1 + charw*(column-1);
+ @set_cursor line column;
+];
+#Endif;
+
+#Ifndef MoveCursor;
+[ MoveCursor line column; ! 1-based postion on text grid
+ if (~~statuswin_current) {
+ @set_window 1;
+ #Ifdef COLOUR;
+ if (clr_on && clr_bgstatus > 1)
+ @set_colour clr_fgstatus clr_bgstatus;
+ else
+ #Endif; ! COLOUR
+ style reverse;
+ }
+ if (line == 0) { line = 1; column = 1; }
+ #Iftrue (#version_number == 6);
+ MoveCursorV6(line, column);
+ #Ifnot;
+ @set_cursor line column;
+ #Endif;
+ statuswin_current = true;
+];
+#Endif;
+
+[ MainWindow;
+ if (statuswin_current) {
+#Ifdef COLOUR;
+ if (clr_on && clr_bgstatus > 1) @set_colour clr_fg clr_bg;
+ else
+#Endif; ! COLOUR
+ style roman;
+ @set_window 0;
+ }
+ statuswin_current = false;
+];
+
+#Iftrue (#version_number == 6);
+[ ScreenWidth width charw;
+ @get_wind_prop 1 3 -> width;
+ @get_wind_prop 1 13 -> charw;
+ charw = charw & $FF;
+ if (charw == 0) return width;
+ return (width+charw-1) / charw;
+];
+#Ifnot;
+[ ScreenWidth;
+ return (HDR_SCREENWCHARS->0);
+];
+#Endif;
+
+[ ScreenHeight;
+ return (HDR_SCREENHLINES->0);
+];
+
+#Iftrue (#version_number == 6);
+[ StatusLineHeight height wx wy x y charh;
+ ! Split the window. Standard 1.0 interpreters should keep the window 0
+ ! cursor in the same absolute position, but older interpreters,
+ ! including Infocom's don't - they keep the window 0 cursor in the
+ ! same position relative to its origin. We therefore compensate
+ ! manually.
+ @get_wind_prop 0 0 -> wy; @get_wind_prop 0 1 -> wx;
+ @get_wind_prop 0 13 -> charh; @log_shift charh $FFF8 -> charh;
+ @get_wind_prop 0 4 -> y; @get_wind_prop 0 5 -> x;
+ height = height * charh;
+ @split_window height;
+ y = y - height + wy - 1;
+ if (y < 1) y = 1;
+ x = x + wx - 1;
+ @set_cursor y x 0;
+ gg_statuswin_cursize = height;
+];
+#Ifnot;
+[ StatusLineHeight height;
+ if (gg_statuswin_cursize ~= height)
+ @split_window height;
+ gg_statuswin_cursize = height;
+];
+#Endif;
+
+#Ifdef COLOUR;
+[ SetColour f b window;
+ if (window == 0) { ! if setting both together, set reverse
+ clr_fgstatus = b;
+ clr_bgstatus = f;
+ }
+ if (window == 1) {
+ clr_fgstatus = f;
+ clr_bgstatus = b;
+ }
+ if (window == 0 or 2) {
+ clr_fg = f;
+ clr_bg = b;
+ }
+ if (clr_on) {
+ if (statuswin_current)
+ @set_colour clr_fgstatus clr_bgstatus;
+ else
+ @set_colour clr_fg clr_bg;
+ }
+];
+#Endif; ! COLOUR
+
+
+#Ifnot; ! TARGET_GLULX
+
+[ ClearScreen window;
+ if (window == WIN_ALL or WIN_MAIN) {
+ glk_window_clear(gg_mainwin);
+ if (gg_quotewin) {
+ glk_window_close(gg_quotewin, 0);
+ gg_quotewin = 0;
+ }
+ }
+ if (gg_statuswin && window == WIN_ALL or WIN_STATUS)
+ glk_window_clear(gg_statuswin);
+];
+
+[ MoveCursor line column; ! 0-based postion on text grid
+ if (gg_statuswin) {
+ glk_set_window(gg_statuswin);
+ }
+ if (line == 0) { line = 1; column = 1; }
+ glk_window_move_cursor(gg_statuswin, column-1, line-1);
+ statuswin_current=1;
+];
+
+[ MainWindow;
+ glk_set_window(gg_mainwin);
+ statuswin_current=0;
+];
+
+[ MakeColourWord c;
+ if (c > 9) return c;
+ c = c-2;
+ return $ff0000*(c&1) + $ff00*(c&2 ~= 0) + $ff*(c&4 ~= 0);
+];
+
+[ ScreenWidth id;
+ id=gg_mainwin;
+ if (gg_statuswin && statuswin_current) id = gg_statuswin;
+ glk_window_get_size(id, gg_arguments, 0);
+ return gg_arguments-->0;
+];
+
+[ ScreenHeight;
+ glk_window_get_size(gg_mainwin, 0, gg_arguments);
+ return gg_arguments-->0;
+];
+
+#Ifdef COLOUR;
+[ SetColour f b window;
+ if (window == 0) { ! if setting both together, set reverse
+ clr_fgstatus = b;
+ clr_bgstatus = f;
+ }
+ if (window == 1) {
+ clr_fgstatus = f;
+ clr_bgstatus = b;
+ }
+ if (window == 0 or 2) {
+ clr_fg = f;
+ clr_bg = b;
+ }
+ if (clr_on) {
+ if (glk_gestalt(gestalt_GarglkText, 0)) {
+ if (f >= 0 && f < 10) {
+ f = GlulxColourValues-->f;
+ }
+ else {
+ f = -2;
+ }
+ if (b >= 0 && b < 10) {
+ b = GlulxColourValues-->b;
+ }
+ else {
+ b = -2;
+ }
+ garglk_set_zcolors(f, b);
+ }
+ }
+];
+#Endif; ! COLOUR
+#Endif; ! TARGET_
+
+#Ifndef COLOUR;
+[ SetColour f b window doclear;
+ f = b = window = doclear = 0;
+];
+#Endif;
+
+[ SetClr f b w;
+ SetColour (f, b, w);
+];
+
+[ RestoreColours; ! L61007, L61113
+ gg_statuswin_cursize = -1; ! Force window split in StatusLineHeight()
+ #Ifdef COLOUR;
+ if (clr_on) { ! check colour has been used
+ SetColour(clr_fg, clr_bg, 2); ! make sure both sets of variables are restored
+ SetColour(clr_fgstatus, clr_bgstatus, 1, true);
+ ClearScreen();
+ }
+ #Endif;
+ #Ifdef TARGET_ZCODE;
+ #Iftrue (#version_number == 6); ! request screen update
+ (0-->8) = (0-->8) | $$00000100;
+ #Endif;
+ #Endif; ! TARGET_
+];
+
+! ----------------------------------------------------------------------------
+! Except in Version 3, the DrawStatusLine routine does just that: this is
+! provided explicitly so that it can be Replace'd to change the style, and
+! as written it emulates the ordinary Standard game status line, which is
+! drawn in hardware
+! ----------------------------------------------------------------------------
+
+#Ifdef TARGET_ZCODE;
+
+#IfV5;
+
+#Iftrue (#version_number == 6);
+[ DrawStatusLine width x charw scw mvw;
+ HDR_GAMEFLAGS-->0 = (HDR_GAMEFLAGS-->0) & ~$0004;
+
+ StatusLineHeight(gg_statuswin_size);
+ ! Now clear the window. This isn't totally trivial. Our approach is to
+ ! select the fixed space font, measure its width, and print an appropriate
+ ! number of spaces. We round up if the screen isn't a whole number of
+ ! characters wide, and rely on window 1 being set to clip by default.
+ MoveCursor(1, 1);
+ @set_font 4 -> x;
+ width = ScreenWidth();
+ spaces width;
+ ! Back to standard font for the display. We use output_stream 3 to
+ ! measure the space required, the aim being to get 50 characters
+ ! worth of space for the location name.
+ MoveCursor(1, 2);
+ @set_font 1 -> x;
+ if (location == thedark)
+ print (name) location;
+ else {
+ FindVisibilityLevels();
+ if (visibility_ceiling == location) print (name) location;
+ else print (The) visibility_ceiling;
+ }
+ @get_wind_prop 1 3 -> width;
+ @get_wind_prop 1 13 -> charw;
+ charw = charw & $FF;
+ @output_stream 3 StorageForShortName;
+ print (string) SCORE__TX, "00000";
+ @output_stream -3; scw = HDR_PIXELSTO3-->0 + charw;
+ @output_stream 3 StorageForShortName;
+ print (string) MOVES__TX, "00000";
+ @output_stream -3; mvw = HDR_PIXELSTO3-->0 + charw;
+ if (width - scw - mvw >= 50*charw) {
+ x = 1+width-scw-mvw;
+ @set_cursor 1 x; print (string) SCORE__TX, sline1;
+ x = x+scw;
+ @set_cursor 1 x; print (string) MOVES__TX, sline2;
+ }
+ else {
+ @output_stream 3 StorageForShortName;
+ print "00000/00000";
+ @output_stream -3; scw = HDR_PIXELSTO3-->0 + charw;
+ if (width - scw >= 50*charw) {
+ x = 1+width-scw;
+ @set_cursor 1 x; print sline1, "/", sline2;
+ }
+ }
+ ! Reselect roman, as Infocom's interpreters interpreters go funny
+ ! if reverse is selected twice.
+ MainWindow();
+];
+
+#Endif; ! #version_number == 6
+
+#Endif; ! V5
+
+#Endif; ! TARGET_ZCODE
+
+#Ifndef DrawStatusLine;
+[ DrawStatusLine width posa posb posc posd pose;
+ #Ifdef TARGET_GLULX;
+ ! If we have no status window, we must not try to redraw it.
+ if (gg_statuswin == 0)
+ return;
+ #Endif;
+
+ ! If there is no player location, we shouldn't try to draw status window
+ if (location == nothing || parent(player) == nothing)
+ return;
+
+ StatusLineHeight(gg_statuswin_size);
+ MoveCursor(1, 1);
+
+ width = ScreenWidth();
+ posa = width-26; ! For standard move/score display.
+ posb = width-13;
+ posc = width-5;
+
+ posd = width-19; ! For time display.
+ pose = width-14;
+
+ spaces width;
+
+ MoveCursor(1, 2);
+ if (location == thedark) {
+ print (name) location;
+ }
+ else {
+ FindVisibilityLevels();
+ if (visibility_ceiling == location)
+ print (name) location;
+ else
+ print (The) visibility_ceiling;
+ }
+ if (sys_statusline_flag) {
+ if (width > 29) {
+ if (width > 39)
+ MoveCursor(1, posd);
+ else
+ MoveCursor(1, pose);
+ print (string) TIME__TX;
+ LanguageTimeOfDay(sline1, sline2);
+ } else
+ jump DSLContinue;
+ } else {
+ if (width > 66) {
+ #Ifndef NO_SCORE;
+ MoveCursor(1, posa);
+ print (string) SCORE__TX, sline1;
+ #Endif;
+ MoveCursor(1, posb);
+ print (string) MOVES__TX, sline2;
+ }
+ if (width > 53 && width <= 66) {
+ MoveCursor(1, posb);
+ #Ifdef NO_SCORE;
+ print (string) MOVES__TX, sline2;
+ #Ifnot;
+ print sline1, "/", sline2;
+ #Endif;
+ }
+ if (width < 53) {
+ MoveCursor(1, posc);
+ #Ifdef NO_SCORE;
+ print (string) MOVES_S__TX, sline2;
+ #Ifnot;
+ print sline1, "/", sline2;
+ #Endif;
+ }
+ }
+ .DSLContinue;
+ MainWindow(); ! set_window
+];
+#Endif;
+
+#Ifdef TARGET_GLULX;
+
+[ StatusLineHeight hgt parwin;
+ if (gg_statuswin == 0) return;
+ if (hgt == gg_statuswin_cursize) return;
+ parwin = glk_window_get_parent(gg_statuswin);
+ glk_window_set_arrangement(parwin, $12, hgt, 0);
+ gg_statuswin_cursize = hgt;
+];
+
+[ Box__Routine maxwid arr ix lines lastnl parwin;
+ maxwid = 0; ! squash compiler warning
+ lines = arr-->0;
+
+ if (gg_quotewin == 0) {
+ gg_arguments-->0 = lines;
+ ix = InitGlkWindow(GG_QUOTEWIN_ROCK);
+ if (ix == false) ix = LibraryExtensions.RunWhile(ext_InitGlkWindow, 0, GG_QUOTEWIN_ROCK);
+ if (ix == false)
+ gg_quotewin = glk_window_open(gg_mainwin, $12, lines, 3,
+ GG_QUOTEWIN_ROCK); ! window_open
+ }
+ else {
+ parwin = glk_window_get_parent(gg_quotewin);
+ glk_window_set_arrangement(parwin, $12, lines, 0);
+ }
+
+ lastnl = true;
+ if (gg_quotewin) {
+ glk_window_clear(gg_quotewin);
+ glk_set_window(gg_quotewin);
+ lastnl = false;
+ }
+
+ ! If gg_quotewin is zero here, the quote just appears in the story window.
+
+ glk_set_style(style_BlockQuote);
+ for (ix=0 : ix<lines : ix++) {
+ print (string) arr-->(ix+1);
+ if (ix < lines-1 || lastnl) new_line;
+ }
+ glk_set_style(style_Normal);
+
+ if (gg_quotewin) {
+ glk_set_window(gg_mainwin);
+ }
+];
+
+#Endif; ! TARGET_GLULX
+
+
+#Ifdef TARGET_ZCODE;
+
+[ ZZInitialise;
+ standard_interpreter = HDR_TERPSTANDARD-->0;
+ transcript_mode = ((HDR_GAMEFLAGS-->0) & $0001);
+ sys_statusline_flag = ( (HDR_TERPFLAGS->0) & $0002 ) / 2;
+ top_object = #largest_object-255;
+
+ dict_start = HDR_DICTIONARY-->0;
+ dict_entry_size = dict_start->(dict_start->0 + 1);
+ dict_start = dict_start + dict_start->0 + 4;
+ dict_end = dict_start + (dict_start - 2)-->0 * dict_entry_size;
+ #Ifdef DEBUG;
+ if (dict_start > 0 && dict_end < 0 &&
+ ((-dict_start) - dict_end) % dict_entry_size == 0)
+ print "** Warning: grammar properties might not work correctly **^";
+ #Endif; ! DEBUG
+
+ buffer->0 = INPUT_BUFFER_LEN - WORDSIZE;
+ buffer2->0 = INPUT_BUFFER_LEN - WORDSIZE;
+ buffer3->0 = INPUT_BUFFER_LEN - WORDSIZE;
+ parse->0 = MAX_BUFFER_WORDS;
+ parse2->0 = MAX_BUFFER_WORDS;
+];
+
+#Ifnot; ! TARGET_GLULX;
+
+[ GGInitialise res;
+ @gestalt 4 2 res; ! Test if this interpreter has Glk.
+ if (res == 0) {
+ ! Without Glk, we're entirely screwed.
+ quit;
+ }
+ ! Set the VM's I/O system to be Glk.
+ @setiosys 2 0;
+
+ ! First, we must go through all the Glk objects that exist, and see
+ ! if we created any of them. One might think this strange, since the
+ ! program has just started running, but remember that the player might
+ ! have just typed "restart".
+
+ GGRecoverObjects();
+ res = InitGlkWindow(0);
+ if (res == false) res = LibraryExtensions.RunWhile(ext_InitGlkWindow, 0, 0);
+ if (res) return;
+
+ ! Now, gg_mainwin and gg_storywin might already be set. If not, set them.
+
+ if (gg_mainwin == 0) {
+ ! Open the story window.
+ res = InitGlkWindow(GG_MAINWIN_ROCK);
+ if (res == false) res = LibraryExtensions.RunWhile(ext_InitGlkWindow, 0, GG_MAINWIN_ROCK);
+ if (res == false)
+ gg_mainwin = glk_window_open(0, 0, 0, 3, GG_MAINWIN_ROCK);
+ if (gg_mainwin == 0) {
+ ! If we can't even open one window, there's no point in going on.
+ quit;
+ }
+ }
+ else {
+ ! There was already a story window. We should erase it.
+ glk_window_clear(gg_mainwin);
+ }
+
+ if (gg_statuswin == 0) {
+ res = InitGlkWindow(GG_STATUSWIN_ROCK);
+ if (res == false) res = LibraryExtensions.RunWhile(ext_InitGlkWindow, 0, GG_STATUSWIN_ROCK);
+ if (res == false) {
+ gg_statuswin_cursize = gg_statuswin_size;
+ gg_statuswin = glk_window_open(gg_mainwin, $12,
+ gg_statuswin_cursize, 4, GG_STATUSWIN_ROCK);
+ }
+ }
+ ! It's possible that the status window couldn't be opened, in which case
+ ! gg_statuswin is now zero. We must allow for that later on.
+
+ glk_set_window(gg_mainwin);
+
+ if (InitGlkWindow(1) == false) LibraryExtensions.RunWhile(ext_InitGlkWindow, 0, 1);
+];
+
+[ GGRecoverObjects id;
+ ! If GGRecoverObjects() has been called, all these stored IDs are
+ ! invalid, so we start by clearing them all out.
+ ! (In fact, after a restoreundo, some of them may still be good.
+ ! For simplicity, though, we assume the general case.)
+ gg_mainwin = 0;
+ gg_statuswin = 0;
+ gg_quotewin = 0;
+ gg_scriptfref = 0;
+ gg_scriptstr = 0;
+ gg_savestr = 0;
+ gg_statuswin_cursize = 0;
+ gg_commandstr = 0;
+ gg_command_reading = false;
+ ! Also tell the game to clear its object references.
+ if (IdentifyGlkObject(0) == false) LibraryExtensions.RunWhile(ext_identifyglkobject, 0, 0);
+
+ id = glk_stream_iterate(0, gg_arguments);
+ while (id) {
+ switch (gg_arguments-->0) {
+ GG_SAVESTR_ROCK: gg_savestr = id;
+ GG_SCRIPTSTR_ROCK: gg_scriptstr = id;
+ GG_COMMANDWSTR_ROCK: gg_commandstr = id;
+ gg_command_reading = false;
+ GG_COMMANDRSTR_ROCK: gg_commandstr = id;
+ gg_command_reading = true;
+ default: if (IdentifyGlkObject(1, 1, id, gg_arguments-->0) == false)
+ LibraryExtensions.RunWhile(ext_identifyglkobject, false, 1, 1, id, gg_arguments-->0);
+ }
+ id = glk_stream_iterate(id, gg_arguments);
+ }
+
+ id = glk_window_iterate(0, gg_arguments);
+ while (id) {
+ switch (gg_arguments-->0) {
+ GG_MAINWIN_ROCK: gg_mainwin = id;
+ GG_STATUSWIN_ROCK: gg_statuswin = id;
+ GG_QUOTEWIN_ROCK: gg_quotewin = id;
+ default: if (IdentifyGlkObject(1, 0, id, gg_arguments-->0) == false)
+ LibraryExtensions.RunWhile(ext_identifyglkobject, false, 1, 0, id, gg_arguments-->0);
+ }
+ id = glk_window_iterate(id, gg_arguments);
+ }
+
+ id = glk_fileref_iterate(0, gg_arguments);
+ while (id) {
+ switch (gg_arguments-->0) {
+ GG_SCRIPTFREF_ROCK: gg_scriptfref = id;
+ default: if (IdentifyGlkObject(1, 2, id, gg_arguments-->0) == false)
+ LibraryExtensions.RunWhile(ext_identifyglkobject, false, 1, 2, id, gg_arguments-->0);
+ }
+ id = glk_fileref_iterate(id, gg_arguments);
+ }
+
+ ! Tell the game to tie up any loose ends.
+ if (IdentifyGlkObject(2) == false)
+ LibraryExtensions.RunWhile(ext_identifyglkobject, 0, 2);
+];
+
+! This somewhat obfuscated function will print anything.
+! It handles strings, functions (with optional arguments), objects,
+! object properties (with optional arguments), and dictionary words.
+! It does *not* handle plain integers, but you can use
+! DecimalNumber or EnglishNumber to handle that case.
+!
+! Calling: Is equivalent to:
+! ------- ----------------
+! PrintAnything() <nothing printed>
+! PrintAnything(0) <nothing printed>
+! PrintAnything("string"); print (string) "string";
+! PrintAnything('word') print (address) 'word';
+! PrintAnything(obj) print (name) obj;
+! PrintAnything(obj, prop) obj.prop();
+! PrintAnything(obj, prop, args...) obj.prop(args...);
+! PrintAnything(func) func();
+! PrintAnything(func, args...) func(args...);
+
+[ PrintAnything _vararg_count obj mclass;
+ print_anything_result = 0;
+ if (_vararg_count == 0) return;
+ @copy sp obj;
+ _vararg_count--;
+ if (obj == 0) return;
+
+ if (obj->0 == $60) {
+ ! Dictionary word. Metaclass() can't catch this case, so we do
+ ! it manually.
+ print (address) obj;
+ return;
+ }
+
+ mclass = metaclass(obj);
+ switch (mclass) {
+ nothing:
+ return;
+ String:
+ print (string) obj;
+ return;
+ Routine:
+ ! Call the function with all the arguments which are already
+ ! on the stack.
+ @call obj _vararg_count print_anything_result;
+ return;
+ Object:
+ if (_vararg_count == 0) {
+ print (name) obj;
+ }
+ else {
+ ! Push the object back onto the stack, and call the
+ ! veneer routine that handles obj.prop() calls.
+ @copy obj sp;
+ _vararg_count++;
+ @call CA__Pr _vararg_count print_anything_result;
+ }
+ return;
+ }
+];
+
+! This does the same as PrintAnything, but the output is sent to a
+! byte array in memory. The first two arguments must be the array
+! address and length; the following arguments are interpreted as
+! for PrintAnything. The return value is the number of characters
+! output.
+! If the output is longer than the array length given, the extra
+! characters are discarded, so the array does not overflow.
+! (However, the return value is the total length of the output,
+! including discarded characters.)
+
+[ PrintAnyToArray _vararg_count arr arrlen str oldstr len;
+ @copy sp arr;
+ @copy sp arrlen;
+ _vararg_count = _vararg_count - 2;
+
+ oldstr = glk_stream_get_current(); ! stream_get_current
+ str = glk_stream_open_memory(arr, arrlen, 1, 0);
+ if (str == 0) return 0;
+
+ glk_stream_set_current(str);
+
+ @call PrintAnything _vararg_count 0;
+
+ glk_stream_set_current(oldstr);
+ @copy $ffffffff sp;
+ @copy str sp;
+ @glk $0044 2 0;
+ @copy sp len;
+ @copy sp 0;
+
+ return len;
+];
+
+! And this calls PrintAnyToArray on a particular array, jiggering
+! the result to be a Glulx C-style ($E0) string.
+
+Constant GG_ANYTOSTRING_LEN 66;
+Array AnyToStrArr -> GG_ANYTOSTRING_LEN+1;
+
+[ ChangeAnyToCString _vararg_count ix len;
+ ix = GG_ANYTOSTRING_LEN-2;
+ @copy ix sp;
+ ix = AnyToStrArr+1;
+ @copy ix sp;
+ ix = _vararg_count+2;
+ @call PrintAnyToArray ix len;
+ AnyToStrArr->0 = $E0;
+ if (len >= GG_ANYTOSTRING_LEN)
+ len = GG_ANYTOSTRING_LEN-1;
+ AnyToStrArr->(len+1) = 0;
+ return AnyToStrArr;
+];
+
+#Endif; ! TARGET_
+
+! This is a trivial function which just prints a number, in decimal
+! digits. It may be useful as a stub to pass to PrintAnything.
+
+[ DecimalNumber num; print num; ];
+
+#Ifndef SHORTNAMEBUF_LEN; ! Can't use 'Default', unfortunately,
+Constant SHORTNAMEBUF_LEN 160; ! but this is functionally equivalent
+#Endif;
+
+#IfV5;
+#Ifdef VN_1630;
+Array StorageForShortName buffer SHORTNAMEBUF_LEN;
+#Ifnot;
+Array StorageForShortName -> WORDSIZE + SHORTNAMEBUF_LEN;
+#Endif; ! VN_1630
+
+#Endif; ! V5
+
+#Ifdef TARGET_ZCODE;
+
+! Platform-independent way of printing strings, routines and properties
+! to a buffer (defined as length word followed by byte characters).
+
+[ PrintToBuffer buf len a b c d e;
+ print_anything_result = 0;
+ @output_stream 3 buf;
+ switch (metaclass(a)) {
+ String:
+ print (string) a;
+ Routine:
+ print_anything_result = a(b, c, d, e);
+ Object,Class:
+ if (b)
+ print_anything_result = PrintOrRun(a, b, true);
+ else
+ print (name) a;
+ }
+ @output_stream -3;
+ if (buf-->0 > len) RunTimeError(14, len, "in PrintToBuffer()");
+ return buf-->0;
+];
+
+#Ifnot; ! TARGET_GLULX
+
+[ PrintToBuffer buf len a b c d e;
+ if (b) {
+ if (metaclass(a) == Object && a.#b == WORDSIZE
+ && metaclass(a.b) == String)
+ buf-->0 = PrintAnyToArray(buf+WORDSIZE, len, a.b);
+ else
+ buf-->0 = PrintAnyToArray(buf+WORDSIZE, len, a, b, c, d, e);
+ }
+ else
+ buf-->0 = PrintAnyToArray(buf+WORDSIZE, len, a);
+ if (buf-->0 > len) buf-->0 = len;
+ return buf-->0;
+];
+
+#Endif; ! TARGET_
+
+! Print contents of buffer (defined as length word followed by byte characters).
+! no_break == 1: omit trailing newline.
+! set_case == 1: capitalise first letter;
+! == 2: capitalise first letter, remainder lower case;
+! == 3: all lower case;
+! == 4: all upper case.
+! centred == 1: add leading spaces.
+
+[ PrintFromBuffer buf no_break set_case centred
+ i j k;
+ j = (buf-->0) - 1;
+ if (buf->(j+WORDSIZE) ~= 10 or 13) j++; ! trim any trailing newline
+ if (centred) {
+ k = (ScreenWidth() - j) / 2;
+ if (k>0) spaces k;
+ }
+ for (i=0 : i<j : i++) {
+ k = buf->(WORDSIZE+i);
+ switch (set_case) {
+ 0: break;
+ 1: if (i) set_case = 0;
+ else k = UpperCase(k);
+ 2: if (i) k = LowerCase(k);
+ else k = UpperCase(k);
+ 3: k = LowerCase(k);
+ 4: k = UpperCase(k);
+ }
+ print (char) k;
+ }
+ if (no_break == false) new_line;
+ return j;
+];
+
+! None of the following functions should be called for zcode if the
+! output exceeds the size of the buffer.
+
+[ StringSize a b c d e;
+ PrintToBuffer(StorageForShortName, 160, a, b, c, d, e);
+ return StorageForShortName-->0;
+];
+
+[ PrintCapitalised a b no_break no_caps centred;
+ if (metaclass(a) == Routine or String || b == 0 || metaclass(a.b) == Routine or String)
+ PrintToBuffer(StorageForShortName, SHORTNAMEBUF_LEN, a, b);
+ else
+ if (a.b == NULL) rfalse;
+ else return RunTimeError(2, a, b);
+ if (no_caps == 0 or 1) no_caps = ~~no_caps;
+ PrintFromBuffer(StorageForShortName, no_break, no_caps, centred);
+ return print_anything_result;
+];
+
+[ Centre a b;
+ PrintCapitalised(a, b, false, true, true);
+];
+
+[ Cap str no_caps;
+ if (no_caps) print (string) str;
+ else PrintCapitalised(str,0,true);
+];
+
+[ PrefaceByArticle o acode pluralise capitalise i artform findout artval;
+ if (o provides articles) {
+ artval=(o.&articles)-->(acode+short_name_case*LanguageCases);
+ if (capitalise)
+ print (Cap) artval;
+ else
+ print (string) artval;
+ if (pluralise) return;
+ print (PSN__) o; return;
+ }
+
+ i = GetGNAOfObject(o);
+ if (pluralise) {
+ if (i < 3 || (i >= 6 && i < 9)) i = i + 3;
+ }
+ i = LanguageGNAsToArticles-->i;
+
+ artform = LanguageArticles
+ + 3*WORDSIZE*LanguageContractionForms*(short_name_case + i*LanguageCases);
+
+ #Iftrue (LanguageContractionForms == 2);
+ if (artform-->acode ~= artform-->(acode+3)) findout = true;
+ #Endif; ! LanguageContractionForms
+ #Iftrue (LanguageContractionForms == 3);
+ if (artform-->acode ~= artform-->(acode+3)) findout = true;
+ if (artform-->(acode+3) ~= artform-->(acode+6)) findout = true;
+ #Endif; ! LanguageContractionForms
+ #Iftrue (LanguageContractionForms == 4);
+ if (artform-->acode ~= artform-->(acode+3)) findout = true;
+ if (artform-->(acode+3) ~= artform-->(acode+6)) findout = true;
+ if (artform-->(acode+6) ~= artform-->(acode+9)) findout = true;
+ #Endif; ! LanguageContractionForms
+ #Iftrue (LanguageContractionForms > 4);
+ findout = true;
+ #Endif; ! LanguageContractionForms
+
+ #Ifdef TARGET_ZCODE;
+ if (standard_interpreter && findout) {
+ StorageForShortName-->0 = SHORTNAMEBUF_LEN;
+ @output_stream 3 StorageForShortName;
+ if (pluralise) print (number) pluralise; else print (PSN__) o;
+ @output_stream -3;
+ acode = acode + 3*LanguageContraction(StorageForShortName + 2);
+ }
+ #Ifnot; ! TARGET_GLULX
+ if (findout) {
+ if (pluralise)
+ PrintAnyToArray(StorageForShortName, SHORTNAMEBUF_LEN, EnglishNumber, pluralise);
+ else
+ PrintAnyToArray(StorageForShortName, SHORTNAMEBUF_LEN, PSN__, o);
+ acode = acode + 3*LanguageContraction(StorageForShortName);
+ }
+ #Endif; ! TARGET_
+
+ Cap (artform-->acode, ~~capitalise); ! print article
+ if (pluralise) return;
+ print (PSN__) o;
+];
+
+[ PSN__ o;
+ if (o == 0) { print (string) NOTHING__TX; rtrue; }
+ switch (metaclass(o)) {
+ Routine: print "<routine ", o, ">"; rtrue;
+ String: print "<string ~", (string) o, "~>"; rtrue;
+ nothing: print "<illegal object number ", o, ">"; rtrue;
+ }
+ #Ifdef LanguagePrintShortName;
+ if (LanguagePrintShortName(o)) rtrue;
+ #Endif; ! LanguagePrintShortName
+ if (indef_mode && o.&short_name_indef ~= 0 && PrintOrRun(o, short_name_indef, 1) ~= 0) rtrue;
+ if (o.&short_name ~= 0 && PrintOrRun(o, short_name, 1) ~= 0) rtrue;
+ print (object) o;
+];
+
+[ Indefart o saveIndef;
+ saveIndef = indef_mode; indef_mode = true; caps_mode = false;
+ if (o has proper) {
+ indef_mode = NULL;
+ print (PSN__) o;
+ indef_mode = saveIndef;
+ return;
+ }
+
+ if (o provides article) {
+ PrintOrRun(o, article, 1);
+ print " ", (PSN__) o;
+ indef_mode = saveIndef;
+ return;
+ }
+ PrefaceByArticle(o, 2);
+ indef_mode = saveIndef;
+];
+
+[ CInDefArt o saveIndef saveCaps;
+ saveIndef = indef_mode; indef_mode = true;
+ saveCaps = caps_mode; caps_mode = true;
+
+ if (o has proper) {
+ indef_mode = NULL;
+ PrintToBuffer(StorageForShortName, SHORTNAMEBUF_LEN, PSN__, o);
+ PrintFromBuffer(StorageForShortName, true, caps_mode);
+ caps_mode = saveCaps;
+ return;
+ }
+
+ if (o provides article) {
+ PrintCapitalised(o, article, true);
+ print " ", (PSN__) o;
+ indef_mode = saveIndef;
+ caps_mode = saveCaps;
+ return;
+ }
+ PrefaceByArticle(o, 2, 0, 1);
+ caps_mode = saveCaps;
+ indef_mode = saveIndef;
+];
+
+[ Defart o saveIndef;
+ saveIndef = indef_mode;
+ indef_mode = false;
+ caps_mode = false;
+ if ((~~o ofclass Object) || o has proper) {
+ indef_mode = NULL;
+ if (o == player) {
+ if (player provides narrative_voice) {
+ switch (player.narrative_voice) {
+ 1: print (string) MYSELF__TX;
+ 2: print (string) YOURSELF__TX;
+ 3: print (PSN__) o;
+ default: RunTimeError(16, player.narrative_voice);
+ }
+ }
+ else ThatOrThose(player);
+ } else {
+ print (PSN__) o;
+ }
+ indef_mode = saveIndef;
+ return;
+ }
+ PrefaceByArticle(o, 1);
+ indef_mode = saveIndef;
+];
+
+[ CDefart o saveIndef saveCaps;
+ saveIndef = indef_mode; indef_mode = false;
+ saveCaps = caps_mode; caps_mode = true;
+ if (~~o ofclass Object) {
+ indef_mode = NULL; print (PSN__) o;
+ }
+ else
+ if (o has proper) {
+ indef_mode = NULL;
+ PrintToBuffer(StorageForShortName, SHORTNAMEBUF_LEN, PSN__, o);
+ PrintFromBuffer(StorageForShortName, true, caps_mode);
+ }
+ else
+ PrefaceByArticle(o, 0);
+ indef_mode = saveIndef; caps_mode = saveCaps;
+];
+
+[ PrintShortName o saveIndef;
+ saveIndef = indef_mode; indef_mode = NULL;
+ PSN__(o); indef_mode = saveIndef;
+];
+
+[ EnglishNumber n; LanguageNumber(n); ];
+
+[ SerialComma n;
+ #Ifdef SERIAL_COMMAS;
+ if (n>2) print ",";
+ #Endif;
+ n=0; ! quell unused n variable warning
+];
+
+[ NumberWord o i n;
+ n = LanguageNumbers-->0;
+ for (i=1 : i<=n : i=i+2)
+ if (o == LanguageNumbers-->i) return LanguageNumbers-->(i+1);
+ return 0;
+];
+
+[ RandomEntry tab;
+ if (tab-->0 == 0) return RunTimeError(8);
+ return tab-->(random(tab-->0));
+];
+
+! ----------------------------------------------------------------------------
+! Useful routine: unsigned comparison (for addresses in Z-machine)
+! Returns 1 if x>y, 0 if x=y, -1 if x<y
+! ----------------------------------------------------------------------------
+
+[ UnsignedCompare x y u v;
+ if (x == y) return 0;
+ if (x < 0 && y >= 0) return 1;
+ if (x >= 0 && y < 0) return -1;
+ u = x&~WORD_HIGHBIT; v= y&~WORD_HIGHBIT;
+ if (u > v) return 1;
+ return -1;
+];
+
+! ==============================================================================
+
+#Ifdef NITFOL_HOOKS; ! Code contributed by Evin Robertson
+#Ifdef TARGET_GLULX; ! Might be nice for Z-machine games too,
+ ! but I'm not going to try to make this work
+ ! given #Ifdef funniness.
+
+Array magic_array --> ! This is so nitfol can do typo correction /
+ ! automapping / debugging on Glulx games
+ $6e66726d $4d616763 $ff0010 ! Goes to 'NfrmMagc' 10 refers to length
+ Magic_Global_Dispatch__
+ DI__check_word ! DI__check_word(buf, length)
+ PrintShortName
+ WV__Pr RV__Pr CA__Pr ! obj.prop = x; x = obj.prop; obj.prop(x)
+ RA__Pr RL__Pr RA__Sc ! obj.∝ obj.#prop; class::prop
+ OP__Pr OC__Cl ! obj provides prop; obj ofclass class
+ OB__Move OB__Remove
+ OB__Parent__ OB__Child__ OB__Sibling__ ! No explicit veneer for these
+ ;
+
+[ OB__Parent__ obj; return parent(obj); ];
+
+[ OB__Child__ obj; return child(obj); ];
+
+[ OB__Sibling__ obj; return sibling(obj); ];
+
+[ Magic_Global_Dispatch__ glbl;
+ switch (glbl) {
+ 0:
+ if (location == TheDark) return real_location; return location;
+ 1:
+ return Player;
+ -1:
+ return CompassDirection::number; ! Silliness to make exist RA__Sc
+ ! Should never be called.
+ }
+ return magic_array; ! Silences a warning.
+];
+
+[ DI__check_word buf wlen ix val res dictlen entrylen;
+ ! Just like in Tokenise__. In fact, Tokenise__ could call this if
+ ! it wanted, instead of doing this itself.
+ if (wlen > DICT_WORD_SIZE) wlen = DICT_WORD_SIZE;
+ for (ix=0 : ix<wlen : ix++) {
+ gg_tokenbuf->ix = glk_char_to_lower(buf->ix);
+ }
+ for (: ix<DICT_WORD_SIZE : ix++) {
+ gg_tokenbuf->ix = 0;
+ }
+ val = #dictionary_table + WORDSIZE;
+ entrylen = DICT_WORD_SIZE + 7;
+ @binarysearch gg_tokenbuf DICT_WORD_SIZE val entrylen dictlen 1 1 res;
+ return res;
+];
+
+#Endif; ! TARGET_
+#Endif; ! NITFOL_HOOKS
+
+! ==============================================================================
+
+Object LibraryExtensions "(Library Extensions)"
+ with RunAll [ prop a1 a2 a3
+ obj rval max;
+ objectloop (obj in self)
+ if (obj provides prop && obj.prop ofclass Routine) {
+ rval = obj.prop(a1, a2, a3);
+ if (rval > max) max = rval;
+ if (self.BetweenCalls) self.BetweenCalls();
+ }
+ return max;
+ ],
+ RunUntil [ prop exitval a1 a2 a3
+ obj rval;
+ objectloop (obj in self)
+ if (obj provides prop && obj.prop ofclass Routine) {
+ rval = obj.prop(a1, a2, a3);
+ if (rval == exitval) return rval;
+ if (self.BetweenCalls) self.BetweenCalls();
+ }
+ return ~~exitval;
+ ],
+ RunWhile [ prop exitval a1 a2 a3
+ obj rval;
+ objectloop (obj in self)
+ if (obj provides prop && obj.prop ofclass Routine) {
+ rval = obj.prop(a1, a2, a3);
+ if (rval ~= exitval) return rval;
+ if (self.BetweenCalls) self.BetweenCalls();
+ }
+ return exitval;
+ ],
+
+ ext_number_1 0, ! general temporary workspace
+
+ ! can be set to a function (e.g. RestoreWN) meant for execution
+ ! after non-terminating calls to extension objects
+ ! (via RunUntil/While/All)
+ BetweenCalls 0,
+ RestoreWN [; wn = self.ext_number_1; ],
+
+ ! Special interception points
+ ext_messages 0, ! Called if LibraryMessages.before()
+ ! returns false
+ ! Extensions run while they return false
+
+ ! Cross-platform entry points
+ ! Called/Runs
+ ext_afterlife 0, ! [C2/R1]
+ ext_afterprompt 0, ! [C2/R1]
+ ext_amusing 0, ! [C2/R1]
+ ext_beforeparsing 0, ! [C2/R2]
+ ext_chooseobjects 0, ! [C2/R2]
+ ext_darktodark 0, ! [C2/R1]
+ ext_deathmessage 0, ! [C2/R1]
+ ext_gamepostroutine 0, ! [C2/R2]
+ ext_gamepreroutine 0, ! [C2/R2]
+ ext_initialise 0, ! [C1/R1]
+ ext_inscope 0, ! [C2/R2]
+ ext_lookroutine 0, ! [C2/R1]
+ ext_newroom 0, ! [C2/R1]
+ ext_objectdoesnotfit 0, ! [C2/R2]
+ ext_parsenoun 0, ! [C3/R3]
+ ext_parsenumber 0, ! [C2/R2]
+ ext_parsererror 0, ! [C2/R2]
+ ext_printrank 0, ! [C2/R1]
+ ext_printtaskname 0, ! [C2/R1]
+ ext_printverb 0, ! [C2/R2]
+ ext_timepasses 0, ! [C2/R1]
+ ext_unknownverb 0, ! [C2/R2]
+ ext_aftersave 0, ! [C2/R2]
+ ext_afterrestore 0, ! [C2/R2]
+ ! [C1] = Called in all cases
+ ! [C2] = Called if EP is undefined, or returns false
+ ! [C3] = called if EP is undefined, or returns -1
+ ! [R1] = All extensions run
+ ! [R2] = Extensions run while they return false
+ ! [R3] = Extensions run while they return -1
+
+ #Ifdef TARGET_GLULX;
+ ! Glulx entry points
+ ! Called: Runs:
+ ext_handleglkevent 0, ! if EP undefined while extensions return false
+ ext_identifyglkobject 0, ! if EP undefined while extensions return false
+ ext_initglkwindow 0, ! if EP undefined while extensions return false
+ #Endif; ! TARGET_GLULX;
+
+ has proper;
! ==============================================================================
projects / informlib.git / blobdiff