+++ /dev/null
-/* ------------------------------------------------------------------------- */
-/* "veneer" : Compiling the run-time "veneer" of any routines invoked */
-/* by the compiler (e.g. DefArt) which the program doesn't */
-/* provide */
-/* */
-/* Copyright (c) Graham Nelson 1993 - 2018 */
-/* */
-/* This file is part of Inform. */
-/* */
-/* Inform is free software: you can redistribute it and/or modify */
-/* it under the terms of the GNU General Public License as published by */
-/* the Free Software Foundation, either version 3 of the License, or */
-/* (at your option) any later version. */
-/* */
-/* Inform is distributed in the hope that it will be useful, */
-/* but WITHOUT ANY WARRANTY; without even the implied warranty of */
-/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
-/* GNU General Public License for more details. */
-/* */
-/* You should have received a copy of the GNU General Public License */
-/* along with Inform. If not, see https://gnu.org/licenses/ */
-/* */
-/* ------------------------------------------------------------------------- */
-
-#include "header.h"
-
-int veneer_mode; /* Is the code currently being
- compiled from the veneer? */
-
-static debug_locations null_debug_locations =
- { { 0, 0, 0, 0, 0, 0, 0 }, NULL, 0 };
-
-extern void compile_initial_routine(void)
-{
- /* The first routine present in memory in any Inform game, beginning
- at the code area start position, always has 0 local variables
- (since the interpreter begins execution with an empty stack frame):
- and it must "quit" rather than "return".
-
- In order not to impose these restrictions on "Main", we compile a
- trivial routine consisting of a call to "Main" followed by "quit". */
-
- int32 j;
- assembly_operand AO;
-
- j = symbol_index("Main__", -1);
- assign_symbol(j,
- assemble_routine_header(0, FALSE, "Main__", FALSE, j),
- ROUTINE_T);
- sflags[j] |= SYSTEM_SFLAG + USED_SFLAG;
- if (trace_fns_setting==3) sflags[j] |= STAR_SFLAG;
-
- if (!glulx_mode) {
-
- INITAOTV(&AO, LONG_CONSTANT_OT, 0);
- AO.marker = MAIN_MV;
-
- sequence_point_follows = FALSE;
-
- if (version_number > 3)
- assemblez_1_to(call_vs_zc, AO, temp_var1);
- else
- assemblez_1_to(call_zc, AO, temp_var1);
-
- assemblez_0(quit_zc);
-
- }
- else {
-
- INITAOTV(&AO, CONSTANT_OT, 0);
- AO.marker = MAIN_MV;
-
- sequence_point_follows = FALSE;
-
- assembleg_3(call_gc, AO, zero_operand, zero_operand);
- assembleg_1(return_gc, zero_operand);
-
- }
-
- assemble_routine_end(FALSE, null_debug_locations);
-}
-
-/* ------------------------------------------------------------------------- */
-/* The rest of the veneer is applied at the end of the pass, as required. */
-/* ------------------------------------------------------------------------- */
-
-static int veneer_routine_needs_compilation[VENEER_ROUTINES];
-int32 veneer_routine_address[VENEER_ROUTINES];
-static int veneer_symbols_base;
-
-#define VR_UNUSED 0
-#define VR_CALLED 1
-#define VR_COMPILED 2
-
-typedef struct VeneerRoutine_s
-{ char *name;
- char *source1;
- char *source2;
- char *source3;
- char *source4;
- char *source5;
- char *source6;
-} VeneerRoutine;
-
-static char *veneer_source_area;
-
-static VeneerRoutine VRs_z[VENEER_ROUTINES] =
-{
- /* Box__Routine: the only veneer routine used in the implementation of
- an actual statement ("box", of course), written in a
- hybrid of Inform and assembly language. Note the
- transcription of the box text to the transcript
- output stream (-1, or $ffff). */
-
- { "Box__Routine",
- "maxw table n w w2 line lc t;\
- n = table --> 0;\
- @add n 6 -> sp;\
- @split_window sp;\
- @set_window 1;\
- w = 0 -> 33;\
- if (w == 0) w=80;\
- w2 = (w - maxw)/2;\
- style reverse;\
- @sub w2 2 -> w;\
- line = 5;\
- lc = 1;\
- @set_cursor 4 w;\
- spaces maxw + 4;",
- "do\
- { @set_cursor line w;\
- spaces maxw + 4;\
- @set_cursor line w2;\
- t = table --> lc;\
- if (t~=0) print (string) t;\
- line++; lc++;\
- } until (lc > n);\
- @set_cursor line w;\
- spaces maxw + 4;\
- @buffer_mode 1;\
- style roman;\
- @set_window 0;\
- @split_window 1;\
- @output_stream $ffff;\
- print \"[ \";\
- lc = 1;",
- "do\
- { w = table --> lc;\
- if (w ~= 0) print (string) w;\
- lc++;\
- if (lc > n)\
- { print \"]^^\";\
- break;\
- }\
- print \"^ \";\
- } until (false);\
- @output_stream 1;\
- ]", "", "", ""
- },
-
- /* This batch of routines is expected to be defined (rather better) by
- the Inform library: these minimal forms here are provided to prevent
- tiny non-library-using programs from failing to compile when certain
- legal syntaxes (such as <<Action a b>>;) are used. */
-
- { "R_Process",
- "a b c d; print \"Action <\", a, \" \", b, \" \", c;\
- if (d) print \", \", d; print \">^\";\
- ]", "", "", "", "", ""
- },
- { "DefArt",
- "obj; print \"the \", obj; ]", "", "", "", "", ""
- },
- { "InDefArt",
- "obj; print \"a \", obj; ]", "", "", "", "", ""
- },
- { "CDefArt",
- "obj; print \"The \", obj; ]", "", "", "", "", ""
- },
- { "CInDefArt",
- "obj; print \"A \", obj; ]", "", "", "", "", ""
- },
- { "PrintShortName",
- "obj; switch(metaclass(obj))\
- { 0: print \"nothing\";\
- Object: @print_obj obj;\
- Class: print \"class \"; @print_obj obj;\
- Routine: print \"(routine at \", obj, \")\";\
- String: print \"(string at \", obj, \")\";\
- } ]", "", "", "", "", ""
- },
- { "EnglishNumber",
- "obj; print obj; ]", "", "", "", "", ""
- },
- { "Print__PName",
- "prop p size cla i;\
- if (prop & $c000)\
- { cla = #classes_table-->(prop & $ff);\
- print (name) cla, \"::\";\
- if ((prop & $8000) == 0) prop = (prop & $3f00)/$100;\
- else\
- { prop = (prop & $7f00)/$100;\
- i = cla.3;\
- while ((i-->0 ~= 0) && (prop>0))\
- { i = i + i->2 + 3;\
- prop--;\
- }\
- prop = (i-->0) & $7fff;\
- }\
- }",
- "p = #identifiers_table;\
- size = p-->0;\
- if (prop<=0 || prop>=size || p-->prop==0)\
- print \"<number \", prop, \">\";\
- else print (string) p-->prop;\
- ]", "", "", "", ""
- },
-
- /* The remaining routines make up the run-time half of the object
- orientation system, and need never be present for Inform 5 programs. */
-
- {
- /* WV__Pr: write a value to the property for the given
- object having the given identifier */
-
- "WV__Pr",
- "obj identifier value x;\
- x = obj..&identifier;\
- if (x==0) { RT__Err(\"write to\", obj, identifier); return; }\
- #ifdef INFIX;\
- if (obj has infix__watching || (debug_flag & 15)) RT__TrPS(obj,identifier,value);\
- #ifnot; #ifdef DEBUG;\
- if (debug_flag & 15) RT__TrPS(obj,identifier,value);\
- #endif; #endif;\
- x-->0 = value;\
- ]", "", "", "", "", ""
- },
- {
- /* RV__Pr: read a value from the property for the given
- object having the given identifier */
-
- "RV__Pr",
- "obj identifier x;\
- x = obj..&identifier;\
- if (x==0)\
- { if (identifier >= 1 && identifier < 64 && obj.#identifier <= 2)\
- return obj.identifier;\
- RT__Err(\"read\", obj, identifier); return; }\
- if (obj..#identifier > 2) RT__Err(\"read\", obj, identifier, 2);\
- return x-->0;\
- ]", "", "", "", "", ""
- },
- { /* CA__Pr: call, that is, print-or-run-or-read, a property:
- this exactly implements obj..prop(...). Note that
- classes (members of Class) have 5 built-in properties
- inherited from Class: create, recreate, destroy,
- remaining and copy. Implementing these here prevents
- the need for a full metaclass inheritance scheme. */
-
- "CA__Pr",
- "obj id a b c d e f x y z s s2 n m;\
- if (obj < 1 || obj > #largest_object-255)\
- { switch(Z__Region(obj))\
- { 2: if (id == call)\
- { s = sender; sender = self; self = obj;\
- #ifdef action;sw__var=action;#endif;\
- x = indirect(obj, a, b, c, d, e, f);\
- self = sender; sender = s; return x; }\
- jump Call__Error;",
- "3: if (id == print) { @print_paddr obj; rtrue; }\
- if (id == print_to_array)\
- { @output_stream 3 a; @print_paddr obj; @output_stream -3;\
- return a-->0; }\
- jump Call__Error;\
- }\
- jump Call__Error;\
- }\
- @check_arg_count 3 ?~A__x;y++;@check_arg_count 4 ?~A__x;y++;\
- @check_arg_count 5 ?~A__x;y++;@check_arg_count 6 ?~A__x;y++;\
- @check_arg_count 7 ?~A__x;y++;@check_arg_count 8 ?~A__x;y++;.A__x;",
- "#ifdef INFIX;if (obj has infix__watching) n=1;#endif;\
- #ifdef DEBUG;if (debug_flag & 1 ~= 0) n=1;#endif;\
- if (n==1) {\
- #ifdef DEBUG;n=debug_flag & 1; debug_flag=debug_flag-n;#endif;\
- print \"[ ~\", (name) obj, \"~.\", (property) id, \"(\";\
- switch(y) { 1: print a; 2: print a,\",\",b; 3: print a,\",\",b,\",\",c;\
- 4: print a,\",\",b,\",\",c,\",\",d;\
- 5: print a,\",\",b,\",\",c,\",\",d,\",\",e;\
- 6: print a,\",\",b,\",\",c,\",\",d,\",\",e,\",\",f; }\
- print \") ]^\";\
- #ifdef DEBUG;debug_flag = debug_flag + n;#endif;\
- }",
- "if (id > 0 && id < 64)\
- { x = obj.&id; if (x==0) { x=$000a-->0 + 2*(id-1); n=2; }\
- else n = obj.#id; }\
- else\
- { if (id>=64 && id<69 && obj in Class)\
- return Cl__Ms(obj,id,y,a,b,c,d);\
- x = obj..&id;\
- if (x == 0) { .Call__Error;\
- RT__Err(\"send message\", obj, id); return; }\
- n = 0->(x-1);\
- if (id&$C000==$4000)\
- switch (n&$C0) { 0: n=1; $40: n=2; $80: n=n&$3F; }\
- }",
- "for (:2*m<n:m++)\
- { if (x-->m==$ffff) rfalse;\
- switch(Z__Region(x-->m))\
- { 2: s = sender; sender = self; self = obj; s2 = sw__var;\
- #ifdef LibSerial;\
- if (id==life) sw__var=reason_code; else sw__var=action;\
- #endif;\
- switch(y) { 0: z = indirect(x-->m); 1: z = indirect(x-->m, a);\
- 2: z = indirect(x-->m, a, b); 3: z = indirect(x-->m, a, b, c);",
- "4: z = indirect(x-->m, a, b, c, d); 5:z = indirect(x-->m, a, b, c, d, e);\
- 6: z = indirect(x-->m, a, b, c, d, e, f); }\
- self = sender; sender = s; sw__var = s2;\
- if (z ~= 0) return z;\
- 3: print_ret (string) x-->m;\
- default: return x-->m;\
- }\
- }\
- rfalse;\
- ]"
- },
- {
- /* IB__Pr: ++(individual property) */
-
- "IB__Pr",
- "obj identifier x;\
- x = obj..&identifier;\
- if (x==0) { RT__Err(\"increment\", obj, identifier); return; }\
- #ifdef INFIX;\
- if (obj has infix__watching || (debug_flag & 15)) RT__TrPS(obj,identifier,(x-->0)+1);\
- #ifnot; #ifdef DEBUG;\
- if (debug_flag & 15) RT__TrPS(obj,identifier,(x-->0)+1);\
- #endif; #endif;\
- return ++(x-->0);\
- ]", "", "", "", "", ""
- },
- {
- /* IA__Pr: (individual property)++ */
-
- "IA__Pr",
- "obj identifier x;\
- x = obj..&identifier;\
- if (x==0) { RT__Err(\"increment\", obj, identifier); return; }\
- #ifdef INFIX;\
- if (obj has infix__watching || (debug_flag & 15))\
- RT__TrPS(obj,identifier,(x-->0)+1);\
- #ifnot; #ifdef DEBUG;\
- if (debug_flag & 15) RT__TrPS(obj,identifier,(x-->0)+1);\
- #endif; #endif;\
- return (x-->0)++;\
- ]", "", "", "", "", ""
- },
- {
- /* DB__Pr: --(individual property) */
-
- "DB__Pr",
- "obj identifier x;\
- x = obj..&identifier;\
- if (x==0) { RT__Err(\"decrement\", obj, identifier); return; }\
- #ifdef INFIX;\
- if (obj has infix__watching || (debug_flag & 15)) RT__TrPS(obj,identifier,(x-->0)-1);\
- #ifnot; #ifdef DEBUG;\
- if (debug_flag & 15) RT__TrPS(obj,identifier,(x-->0)-1);\
- #endif; #endif;\
- return --(x-->0);\
- ]", "", "", "", "", ""
- },
- {
- /* DA__Pr: (individual property)-- */
-
- "DA__Pr",
- "obj identifier x;\
- x = obj..&identifier;\
- if (x==0) { RT__Err(\"decrement\", obj, identifier); return; }\
- #ifdef INFIX;\
- if (obj has infix__watching || (debug_flag & 15)) RT__TrPS(obj,identifier,(x-->0)-1);\
- #ifnot; #ifdef DEBUG;\
- if (debug_flag & 15) RT__TrPS(obj,identifier,(x-->0)-1);\
- #endif; #endif;\
- return (x-->0)--;\
- ]", "", "", "", "", ""
- },
- {
- /* RA__Pr: read the address of a property value for a given object,
- returning 0 if it doesn't provide this individual
- property */
-
- "RA__Pr",
- "obj identifier i otherid cla;\
- if (obj==0) rfalse;\
- if (identifier<64 && identifier>0) return obj.&identifier;\
- if (identifier & $8000 ~= 0)\
- { cla = #classes_table-->(identifier & $ff);\
- if (cla.&3 == 0) rfalse;\
- if (~~(obj ofclass cla)) rfalse;\
- identifier = (identifier & $7f00) / $100;\
- i = cla.3;\
- while (identifier>0)\
- { identifier--;\
- i = i + i->2 + 3;\
- }\
- return i+3;\
- }",
- "if (identifier & $4000 ~= 0)\
- { cla = #classes_table-->(identifier & $ff);\
- identifier = (identifier & $3f00) / $100;\
- if (~~(obj ofclass cla)) rfalse; i=0-->5;\
- if (cla == 2) return i+2*identifier-2;\
- i = 0-->((i+124+cla*14)/2);\
- i = CP__Tab(i + 2*(0->i) + 1, -1)+6;\
- return CP__Tab(i, identifier);\
- }\
- if (obj.&3 == 0) rfalse;\
- if (obj in 1)\
- { if (identifier<64 || identifier>=72) rfalse;\
- }",
- "if (self == obj)\
- otherid = identifier | $8000;\
- i = obj.3;\
- while (i-->0 ~= 0)\
- { if (i-->0 == identifier or otherid)\
- return i+3;\
- i = i + i->2 + 3;\
- }\
- rfalse;\
- ]", "", "", ""
- },
- {
- /* RL__Pr: read the property length of an individual property value,
- returning 0 if it isn't provided by the given object */
-
- "RL__Pr",
- "obj identifier x;\
- if (identifier<64 && identifier>0) return obj.#identifier;\
- x = obj..&identifier;\
- if (x==0) rfalse;\
- if (identifier&$C000==$4000)\
- switch (((x-1)->0)&$C0)\
- { 0: return 1; $40: return 2; $80: return ((x-1)->0)&$3F; }\
- return (x-1)->0;\
- ]", "", "", "", "", ""
- },
- {
- /* RA__Sc: implement the "superclass" (::) operator,
- returning an identifier */
-
- "RA__Sc",
- "cla identifier otherid i j k;\
- if (cla notin 1 && cla > 4)\
- { RT__Err(\"be a '::' superclass\", cla, -1); rfalse; }\
- if (self ofclass cla) otherid = identifier | $8000;\
- for (j=0: #classes_table-->j ~= 0: j++)\
- { if (cla==#classes_table-->j)\
- { if (identifier < 64) return $4000 + identifier*$100 + j;\
- if (cla.&3 == 0) break;\
- i = cla.3;",
- "while (i-->0 ~= 0)\
- { if (i-->0 == identifier or otherid)\
- return $8000 + k*$100 + j;\
- i = i + i->2 + 3;\
- k++;\
- }\
- break;\
- }\
- }\
- RT__Err(\"make use of\", cla, identifier);\
- rfalse;\
- ]", "", "", "", ""
- },
- {
- /* OP__Pr: test whether or not given object provides individual
- property with the given identifier code */
-
- "OP__Pr",
- "obj identifier;\
- if (obj<1 || obj > (#largest_object-255))\
- { if (identifier ~= print or print_to_array or call) rfalse;\
- switch(Z__Region(obj))\
- { 2: if (identifier == call) rtrue;\
- 3: if (identifier == print or print_to_array) rtrue;\
- }\
- rfalse;\
- }",
- "if (identifier<64)\
- { if (obj.&identifier ~= 0) rtrue;\
- rfalse;\
- }\
- if (obj..&identifier ~= 0) rtrue;\
- if (identifier<72 && obj in 1) rtrue;\
- rfalse;\
- ]", "", "", "", ""
- },
- {
- /* OC__Cl: test whether or not given object is of the given class */
-
- "OC__Cl",
- "obj cla j a n;\
- if (obj<1 || obj > (#largest_object-255))\
- { if (cla ~= 3 or 4) rfalse;\
- if (Z__Region(obj) == cla-1) rtrue;\
- rfalse;\
- }\
- if (cla == 1) {\
- if (obj<=4) rtrue;\
- if (obj in 1) rtrue;\
- rfalse;\
- } else if (cla == 2) {\
- if (obj<=4) rfalse;\
- if (obj in 1) rfalse;\
- rtrue;\
- } else if (cla == 3 or 4) {\
- rfalse;\
- }",
- "if (cla notin 1) { RT__Err(\"apply 'ofclass' for\", cla, -1);rfalse;}\
- @get_prop_addr obj 2 -> a;\
- if (a==0) rfalse;\
- @get_prop_len a -> n;\
- for (j=0: j<n/2: j++)\
- { if (a-->j == cla) rtrue;\
- }\
- rfalse;\
- ]", "", "", "", ""
- },
- { /* Copy__Primitive: routine to "deep copy" objects */
-
- "Copy__Primitive",
- "o1 o2 a1 a2 n m l size identifier;\
- for (n=0:n<48:n++)\
- { if (o2 has n) give o1 n;\
- else give o1 ~n;\
- }\
- for (n=1:n<64:n++) if (n~=2 or 3)\
- { a1 = o1.&n; a2 = o2.&n; size = o1.#n;\
- if (a1~=0 && a2~=0 && size==o2.#n)\
- { for (m=0:m<size:m++) a1->m=a2->m;\
- }\
- }",
- "if (o1.&3 == 0 || o2.&3 == 0) return;\
- for (n=o2.3: n-->0 ~= 0: n = n + size + 3)\
- { identifier = n-->0;\
- size = n->2;\
- for (m=o1.3: m-->0 ~= 0: m = m + m->2 + 3)\
- if ((identifier & $7fff == (m-->0) & $7fff) && size==m->2)\
- for (l=3: l<size+3: l++) m->l = n->l;\
- }\
- ]", "", "", "", ""
- },
- { /* RT__Err: for run-time errors occurring in the above: e.g.,
- an attempt to write to a non-existent individual
- property */
-
- "RT__Err",
- "crime obj id size p q;\
- print \"^[** Programming error: \";\
- if (crime<0) jump RErr;\
- if (crime==1) { print \"class \"; @print_obj obj;\
- \": 'create' can have 0 to 3 parameters only **]\";}\
- if (crime == 32) \"objectloop broken because the object \",\
- (name) obj, \" was moved while the loop passed through it **]\";\
- if (crime == 33) \"tried to print (char) \", obj,\
- \", which is not a valid ZSCII character code for output **]\";\
- if (crime == 34) \"tried to print (address) on something not the \",\
- \"byte address of a string **]\";\
- if (crime == 35) \"tried to print (string) on something not a \",\
- \"string **]\";\
- if (crime == 36) \"tried to print (object) on something not an \",\
- \"object or class **]\";",
- "if (crime < 32) { print \"tried to \";\
- if (crime >= 28) { if (crime==28 or 29) print \"read from \";\
- else print \"write to \";\
- if (crime==29 or 31) print \"-\"; print \"->\", obj,\
- \" in the\"; switch(size&7){0,1:q=0; 2:print \" string\";\
- q=1; 3:print \" table\";q=1; 4:print \" buffer\";q=WORDSIZE;} \
- if(size&16) print\" (->)\"; if(size&8) print\" (-->)\";\
- \" array ~\", (string) #array_names_offset-->p,\
- \"~, which has entries \", q, \" up to \",id,\" **]\"; }\
- if (crime >= 24 && crime <=27) { if (crime<=25) print \"read\";\
- else print \"write\"; print \" outside memory using \";\
- switch(crime) { 24,26:\"-> **]\"; 25,27:\"--> **]\"; } }\
- if (crime < 4) print \"test \"; else\
- if (crime < 12 || crime > 20) print \"find the \"; else\
- if (crime < 14) print \"use \";\
- if (crime==20) \"divide by zero **]\"; print \"~\";\
- switch(crime) {\
- 2: print \"in~ or ~notin\"; 3: print \"has~ or ~hasnt\";\
- 4: print \"parent\"; 5: print \"eldest\"; 6: print \"child\";\
- 7: print \"younger\"; 8: print \"sibling\"; 9: print \"children\";\
- 10: print \"youngest\"; 11: print \"elder\";\
- 12: print \"objectloop\"; 13: print \"}~ at end of ~objectloop\";\
- 14: \"give~ an attribute to \", (name) obj, \" **]\";\
- 15: \"remove~ \", (name) obj, \" **]\";",
- "16,17,18: print \"move~ \", (name) obj, \" to \", (name) id;\
- if (crime==18) { print \", which would make a loop: \",(name) obj;\
- p=id; if (p==obj) p=obj;\
- else do { print \" in \", (name) p; p=parent(p);} until (p==obj);\
- \" in \", (name) p, \" **]\"; }\
- \" **]\"; 19: \"give~ or test ~has~ or ~hasnt~ with a non-attribute"\
- " on the object \",(name) obj,\" **]\";\
- 21: print \".&\"; 22: print \".#\"; 23: print \".\"; }\
- \"~ of \", (name) obj, \" **]\"; }",
- ".RErr; if (obj>=0 && obj<=(#largest_object-255)) {\
- if (obj && obj in Class) print \"class \";\
- if (obj) @print_obj obj;else print \"nothing\";print\" \";}\
- print \"(object number \", obj, \") \";\
- if (id<0) print \"is not of class \", (name) -id;",
- "else if (size) print \"has a property \", (property) id,\
- \", but it is longer than 2 bytes so you cannot use ~.~\";\
- else\
- { print \" has no property \", (property) id;\
- p = #identifiers_table;\
- size = p-->0;\
- if (id<0 || id>=size)\
- print \" (and nor has any other object)\";\
- }\
- print \" to \", (string) crime, \" **]^\";\
- ]", ""
- },
- { /* Z__Region: Determines whether a value is:
- 1 an object number
- 2 a code address
- 3 a string address
- 0 none of the above */
-
- "Z__Region",
- "addr top;\
- if (addr==0 or -1) rfalse;\
- top = addr;\
- #IfV5; #iftrue (#version_number == 6) || (#version_number == 7);\
- @log_shift addr $FFFF -> top; #Endif; #Endif;\
- if (Unsigned__Compare(top, $001A-->0) >= 0) rfalse;\
- if (addr>=1 && addr<=(#largest_object-255)) rtrue;\
- #iftrue #oddeven_packing;\
- @test addr 1 ?~NotString;\
- if (Unsigned__Compare(addr, #strings_offset)<0) rfalse;\
- return 3;\
- .NotString;\
- if (Unsigned__Compare(addr, #code_offset)<0) rfalse;\
- return 2;\
- #ifnot;\
- if (Unsigned__Compare(addr, #strings_offset)>=0) return 3;\
- if (Unsigned__Compare(addr, #code_offset)>=0) return 2;\
- rfalse;\
- #endif;\
- ]", "", "", "", "", ""
- },
- { /* Unsigned__Compare: returns 1 if x>y, 0 if x=y, -1 if x<y */
-
- "Unsigned__Compare",
- "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&$7fff; v= y&$7fff;\
- if (u>v) return 1;\
- return -1;\
- ]", "", "", "", "", ""
- },
- { /* Meta__class: returns the metaclass of an object */
-
- "Meta__class",
- "obj;\
- switch(Z__Region(obj))\
- { 2: return Routine;\
- 3: return String;\
- 1: if (obj in 1 || obj <= 4) return Class;\
- return Object;\
- }\
- rfalse;\
- ]", "", "", "", "", ""
- },
- { /* CP__Tab: searches a common property table for the given
- identifier, thus imitating the get_prop_addr opcode.
- Returns 0 if not provided, except:
- if the identifier supplied is -1, then returns
- the address of the first byte after the table. */
-
- "CP__Tab",
- "x id n l;\
- while ((n=0->x) ~= 0)\
- { if (n & $80) { x++; l = (0->x) & $3f; }\
- else { if (n & $40) l=2; else l=1; }\
- x++;\
- if ((n & $3f) == id) return x;\
- x = x + l;\
- }\
- if (id<0) return x+1; rfalse; ]", "", "", "", "", ""
- },
- { /* Cl__Ms: the five message-receiving properties of Classes */
-
- "Cl__Ms",
- "obj id y a b c d x;\
- switch(id)\
- { create:\
- if (children(obj)<=1) rfalse; x=child(obj);\
- remove x; if (x provides create) { if (y==0) x..create();\
- if (y==1) x..create(a); if (y==2) x..create(a,b);\
- if (y>3) RT__Err(1,obj); if (y>=3) x..create(a,b,c);}\
- return x;\
- recreate:\
- if (~~(a ofclass obj))\
- { RT__Err(\"recreate\", a, -obj); rfalse; }\
- Copy__Primitive(a, child(obj));\
- if (a provides create) { if (y==1) a..create();\
- if (y==2) a..create(b); if (y==3) a..create(b,c);\
- if (y>4) RT__Err(1,obj); if (y>=4) a..create(b,c,d);\
- } rfalse;",
- "destroy:\
- if (~~(a ofclass obj))\
- { RT__Err(\"destroy\", a, -obj); rfalse; }\
- if (a provides destroy) a..destroy();\
- Copy__Primitive(a, child(obj));\
- move a to obj; rfalse;\
- remaining:\
- return children(obj)-1;",
- "copy:\
- if (~~(a ofclass obj))\
- { RT__Err(\"copy\", a, -obj); rfalse; }\
- if (~~(b ofclass obj))\
- { RT__Err(\"copy\", b, -obj); rfalse; }\
- Copy__Primitive(a, b); rfalse;\
- }\
- ]", "", "", ""
- },
- { /* RT__ChT: check at run-time that a proposed object move is legal
- cause error and do nothing if not; otherwise move */
-
- "RT__ChT",
- "obj1 obj2 x;\
- if (obj1<5 || obj1>(#largest_object-255) || obj1 in 1)\
- return RT__Err(16,obj1,obj2);\
- if (obj2<5 || obj2>(#largest_object-255) || obj2 in 1)\
- return RT__Err(17,obj1,obj2);",
- "x=obj2; while (x~=0) { if (x==obj1) return RT__Err(18,obj1,obj2); \
- x=parent(x); }\
- #ifdef INFIX;\
- if (obj1 has infix__watching\
- || obj2 has infix__watching || (debug_flag & 15))\
- print \"[Moving \", (name) obj1, \" to \", (name) obj2, \"]^\";\
- #ifnot; #ifdef DEBUG;\
- if (debug_flag & 15)\
- print \"[Moving \", (name) obj1, \" to \", (name) obj2, \"]^\";\
- #endif; #endif;\
- @insert_obj obj1 obj2; ]", "", "", "", ""
- },
- { /* RT__ChR: check at run-time that a proposed object remove is legal
- cause error and do nothing if not; otherwise remove */
-
- "RT__ChR",
- "obj1;\
- if (obj1<5 || obj1>(#largest_object-255) || obj1 in 1)\
- return RT__Err(15,obj1);",
- "#ifdef INFIX;\
- if (obj1 has infix__watching || (debug_flag & 15))\
- print \"[Removing \", (name) obj1, \"]^\";\
- #ifnot; #ifdef DEBUG;\
- if (debug_flag & 15)\
- print \"[Removing \", (name) obj1, \"]^\";\
- #endif; #endif;\
- @remove_obj obj1; ]", "", "", "", ""
- },
- { /* RT__ChG: check at run-time that a proposed attr give is legal
- cause error and do nothing if not; otherwise give */
-
- "RT__ChG",
- "obj1 a;\
- if (obj1<5 || obj1>(#largest_object-255) || obj1 in 1)\
- return RT__Err(14,obj1); if (a<0 || a>=48) return RT__Err(19,obj1);\
- if (obj1 has a) return;",
- "#ifdef INFIX;\
- if (a ~= workflag && (obj1 has infix__watching || (debug_flag & 15)))\
- print \"[Giving \", (name) obj1, \" \", (DebugAttribute) a, \"]^\";\
- #ifnot; #ifdef DEBUG;\
- if (a ~= workflag && debug_flag & 15)\
- print \"[Giving \", (name) obj1, \" \", (DebugAttribute) a, \"]^\";\
- #endif; #endif;\
- @set_attr obj1 a; ]", "", "", "", ""
- },
- { /* RT__ChGt: check at run-time that a proposed attr give ~ is legal
- cause error and do nothing if not; otherwise give */
-
- "RT__ChGt",
- "obj1 a;\
- if (obj1<5 || obj1>(#largest_object-255) || obj1 in 1)\
- return RT__Err(14,obj1); if (a<0 || a>=48) return RT__Err(19,obj1);\
- if (obj1 hasnt a) return;",
- "#ifdef INFIX;\
- if (a ~= workflag && (obj1 has infix__watching || (debug_flag & 15)))\
- print \"[Giving \",(name) obj1,\" @@126\", (DebugAttribute) a, \"]^\";\
- #ifnot; #ifdef DEBUG;\
- if (a ~= workflag && debug_flag & 15)\
- print \"[Giving \",(name) obj1,\" @@126\", (DebugAttribute) a, \"]^\";\
- #endif; #endif;\
- @clear_attr obj1 a; ]", "", "", "", ""
- },
- { /* RT__ChPS: check at run-time that a proposed property set is legal
- cause error and do nothing if not; otherwise make it */
-
- "RT__ChPS",
- "obj prop val size;\
- if (obj<5 || obj>(#largest_object-255) || obj in 1 || obj.&prop==0 || (size=obj.#prop)>2 )\
- return RT__Err(\"set\", obj, prop, size);\
- @put_prop obj prop val;",
- "#ifdef INFIX;\
- if (obj has infix__watching || (debug_flag & 15)) RT__TrPS(obj,prop,val);\
- #ifnot; #ifdef DEBUG;\
- if (debug_flag & 15) RT__TrPS(obj,prop,val);\
- #endif; #endif;\
- return val; ]", "", "", "", ""
- },
- { /* RT__ChPR: check at run-time that a proposed property read is legal
- cause error and return 0 if not; otherwise read it */
-
- "RT__ChPR",
- "obj prop val size;\
- if (obj<5 || obj>(#largest_object-255) || (size=obj.#prop)>2)\
- {RT__Err(\"read\", obj, prop, size); obj=2;}\
- @get_prop obj prop -> val;",
- "return val; ]", "", "", "", ""
- },
- { /* RT__TrPS: trace property settings */
-
- "RT__TrPS",
- "obj prop val;\
- print \"[Setting \",(name) obj,\".\",(property) prop,\
- \" to \",val,\"]^\"; ]",
- "", "", "", "", ""
- },
- { /* RT__ChLDB: check at run-time that it's safe to load a byte
- and return the byte */
-
- "RT__ChLDB",
- "base offset a val;\
- a=base+offset;if (Unsigned__Compare(a,#readable_memory_offset)>=0)\
- return RT__Err(24);",
- "@loadb base offset -> val;return val; ]", "", "", "", ""
- },
- { /* RT__ChLDW: check at run-time that it's safe to load a word
- and return the word */
-
- "RT__ChLDW",
- "base offset a val;\
- a=base+2*offset;if (Unsigned__Compare(a,#readable_memory_offset)>=0)\
- return RT__Err(25);",
- "@loadw base offset -> val;return val; ]", "", "", "", ""
- },
- { /* RT__ChSTB: check at run-time that it's safe to store a byte
- and store it */
-
- "RT__ChSTB",
- "base offset val a f;\
- a=base+offset;\
- if (Unsigned__Compare(a,#array__start)>=0\
- && Unsigned__Compare(a,#array__end)<0) f=1; else\
- if (Unsigned__Compare(a,#cpv__start)>=0\
- && Unsigned__Compare(a,#cpv__end)<0) f=1; else\
- if (Unsigned__Compare(a,#ipv__start)>=0\
- && Unsigned__Compare(a,#ipv__end)<0) f=1; else\
- if (a==$0011) f=1;\
- if (f==0) return RT__Err(26);",
- "@storeb base offset val; ]", "", "", "", ""
- },
- { /* RT__ChSTW: check at run-time that it's safe to store a word
- and store it */
-
- "RT__ChSTW",
- "base offset val a f;\
- a=base+2*offset;\
- if (Unsigned__Compare(a,#array__start)>=0\
- && Unsigned__Compare(a,#array__end)<0) f=1; else\
- if (Unsigned__Compare(a,#cpv__start)>=0\
- && Unsigned__Compare(a,#cpv__end)<0) f=1; else\
- if (Unsigned__Compare(a,#ipv__start)>=0\
- && Unsigned__Compare(a,#ipv__end)<0) f=1; else\
- if (a==$0010) f=1;\
- if (f==0) return RT__Err(27);",
- "@storew base offset val; ]", "", "", "", ""
- },
- { /* RT__ChPrintC: check at run-time that it's safe to print (char)
- and do so */
-
- "RT__ChPrintC",
- "c fl;\
- if (c==0 or 9 or 11 or 13) fl=1;\
- if (c>=32 && c<=126) fl=1; if (c>=155 && c<=251) fl=1;\
- if (fl==0) return RT__Err(33,c);",
- "@print_char c; ]", "", "", "", ""
- },
- { /* RT__ChPrintA: check at run-time that it's safe to print (address)
- and do so */
-
- "RT__ChPrintA",
- "a;\
- if (Unsigned__Compare(a, #readable_memory_offset)>=0)\
- return RT__Err(34);",
- "@print_addr a; ]", "", "", "", ""
- },
- { /* RT__ChPrintS: check at run-time that it's safe to print (string)
- and do so */
-
- "RT__ChPrintS",
- "a;\
- if (Z__Region(a)~=3) return RT__Err(35);",
- "@print_paddr a; ]", "", "", "", ""
- },
- { /* RT__ChPrintO: check at run-time that it's safe to print (object)
- and do so */
-
- "RT__ChPrintO",
- "a;\
- if (Z__Region(a)~=1) return RT__Err(36);",
- "@print_obj a; ]", "", "", "", ""
- }
-};
-
-static VeneerRoutine VRs_g[VENEER_ROUTINES] =
-{
- {
- /* Box__Routine: Display the given array of text as a box quote.
- This is a very simple implementation; the library should provide
- a fancier version.
- */
- "Box__Routine",
- "maxwid arr ix;\
- maxwid = 0;\
- glk($0086, 7);\
- for (ix=0 : ix<arr-->0 : ix++) {\
- print (string) arr-->(ix+1);\
- new_line;\
- }\
- glk($0086, 0);\
- ]", "", "", "", "", ""
- },
-
- /* This batch of routines is expected to be defined (rather better) by
- the Inform library: these minimal forms here are provided to prevent
- tiny non-library-using programs from failing to compile when certain
- legal syntaxes (such as <<Action a b>>;) are used. */
-
- { "R_Process",
- "a b c d; print \"Action <\", a, \" \", b, \" \", c;\
- if (d) print \", \", d; print \">^\";\
- ]", "", "", "", "", ""
- },
- { "DefArt",
- "obj; print \"the \", obj; ]", "", "", "", "", ""
- },
- { "InDefArt",
- "obj; print \"a \", obj; ]", "", "", "", "", ""
- },
- { "CDefArt",
- "obj; print \"The \", obj; ]", "", "", "", "", ""
- },
- { "CInDefArt",
- "obj; print \"A \", obj; ]", "", "", "", "", ""
- },
- { "PrintShortName",
- "obj q; switch(metaclass(obj))\
- { 0: print \"nothing\";\
- Object: q = obj-->GOBJFIELD_NAME; @streamstr q;\
- Class: print \"class \"; q = obj-->GOBJFIELD_NAME; @streamstr q;\
- Routine: print \"(routine at \", obj, \")\";\
- String: print \"(string at \", obj, \")\";\
- } ]", "", "", "", "", ""
- },
- { "EnglishNumber",
- "obj; print obj; ]", "", "", "", "", ""
- },
- {
- /* Print__PName: Print the name of a property.
- */
- "Print__PName",
- "prop ptab cla maxcom minind maxind str;\
- if (prop & $FFFF0000) {\
- cla = #classes_table-->(prop & $FFFF);\
- print (name) cla, \"::\";\
- @ushiftr prop 16 prop;\
- }\
- ptab = #identifiers_table;\
- maxcom = ptab-->1;\
- minind = INDIV_PROP_START;\
- maxind = minind + ptab-->3;\
- str = 0;\
- if (prop >= 0 && prop < maxcom) {\
- str = (ptab-->0)-->prop;\
- }\
- else if (prop >= minind && prop < maxind) {\
- str = (ptab-->2)-->(prop-minind);\
- }\
- if (str)\
- print (string) str;\
- else\
- print \"<number \", prop, \">\";\
- ]", "", "", "", "", ""
- },
-
- /* The remaining routines make up the run-time half of the object
- orientation system, and need never be present for Inform 5 programs. */
-
- {
- /* WV__Pr: Write a value to the property for the given object.
- */
- "WV__Pr",
- "obj id val addr;\
- addr = obj.&id;\
- if (addr == 0) {\
- RT__Err(\"write\", obj, id);\
- return 0;\
- }\
- addr-->0 = val;\
- return 0;\
- ]", "", "", "", "", ""
- },
-
- {
- /* RV__Pr: Read a value to the property for the given object.
- */
- "RV__Pr",
- "obj id addr;\
- addr = obj.&id;\
- if (addr == 0) {\
- if (id > 0 && id < INDIV_PROP_START) {\
- return #cpv__start-->id;\
- }\
- RT__Err(\"read\", obj, id);\
- return 0;\
- }\
- return addr-->0;\
- ]", "", "", "", "", ""
- },
- {
- /* CA__Pr: Call, that is, print-or-run-or-read, a property:
- this exactly implements obj..prop(...). Note that
- classes (members of Class) have 5 built-in properties
- inherited from Class: create, recreate, destroy,
- remaining and copy. Implementing these here prevents
- the need for a full metaclass inheritance scheme.
- */
- "CA__Pr",
- "_vararg_count obj id zr s s2 z addr len m val;\
- @copy sp obj;\
- @copy sp id;\
- _vararg_count = _vararg_count - 2;\
- zr = Z__Region(obj);\
- if (zr == 2) {\
- if (id == call) {\
- s = sender; sender = self; self = obj;\
- #ifdef action; sw__var=action; #endif;\
- @call obj _vararg_count z;\
- self = sender; sender = s;\
- return z;\
- }\
- jump Call__Error;\
- }",
- " if (zr == 3) {\
- if (id == print) {\
- @streamstr obj; rtrue;\
- }\
- if (id == print_to_array) {\
- if (_vararg_count >= 2) {\
- @copy sp m;\
- @copy sp len;\
- }\
- else {\
- RT__Err(37); rfalse;\
- }\
- s2 = glk($0048);\
- s = glk($0043, m+4, len-4, 1, 0);",
- " if (s) {\
- glk($0047, s);\
- @streamstr obj;\
- glk($0047, s2);\
- @copy $ffffffff sp;\
- @copy s sp;\
- @glk $0044 2 0;\
- @copy sp len;\
- @copy sp 0;\
- m-->0 = len;\
- return len;\
- }\
- rfalse;\
- }\
- jump Call__Error;\
- }",
- " if (zr ~= 1)\
- jump Call__Error;\
- #ifdef DEBUG;#ifdef InformLibrary;\
- if (debug_flag & 1 ~= 0) {\
- debug_flag--;\
- print \"[ ~\", (name) obj, \"~.\", (property) id, \"(\";\
- @stkcopy _vararg_count;\
- for (val=0 : val < _vararg_count : val++) {\
- if (val) print \", \";\
- @streamnum sp;\
- }\
- print \") ]^\";\
- debug_flag++;\
- }\
- #endif;#endif;\
- if (obj in Class) {\
- switch (id) {\
- remaining:\
- return Cl__Ms(obj, id);\
- copy:\
- @copy sp m;\
- @copy sp val;\
- return Cl__Ms(obj, id, m, val);\
- create, destroy, recreate:\
- m = _vararg_count+2;\
- @copy id sp;\
- @copy obj sp;\
- @call Cl__Ms m val;\
- return val;\
- }\
- }",
- " addr = obj.&id;\
- if (addr == 0) {\
- if (id > 0 && id < INDIV_PROP_START) {\
- addr = #cpv__start + 4*id;\
- len = 4;\
- }\
- else {\
- jump Call__Error;\
- }\
- }\
- else {\
- len = obj.#id;\
- }\
- for (m=0 : 4*m<len : m++) {\
- val = addr-->m;\
- if (val == -1) rfalse;\
- switch (Z__Region(val)) {\
- 2:\
- s = sender; sender = self; self = obj; s2 = sw__var;\
- #ifdef LibSerial;\
- if (id==life) sw__var=reason_code; else sw__var=action;\
- #endif;",
- " @stkcopy _vararg_count;\
- @call val _vararg_count z;\
- self = sender; sender = s; sw__var = s2;\
- if (z ~= 0) return z;\
- 3:\
- @streamstr val;\
- new_line;\
- rtrue;\
- default:\
- return val;\
- }\
- }\
- rfalse;\
- .Call__Error;\
- RT__Err(\"send message\", obj, id);\
- rfalse;\
- ]"
- },
- {
- /* IB__Pr: ++(individual property) */
-
- "IB__Pr",
- "obj identifier x;\
- x = obj.&identifier;\
- if (x==0) { RT__Err(\"increment\", obj, identifier); return; }\
- #ifdef INFIX;\
- if (obj has infix__watching || (debug_flag & 15)) RT__TrPS(obj,identifier,(x-->0)+1);\
- #ifnot; #ifdef DEBUG;\
- if (debug_flag & 15) RT__TrPS(obj,identifier,(x-->0)+1);\
- #endif; #endif;\
- return ++(x-->0);\
- ]", "", "", "", "", ""
- },
- {
- /* IA__Pr: (individual property)++ */
-
- "IA__Pr",
- "obj identifier x;\
- x = obj.&identifier;\
- if (x==0) { RT__Err(\"increment\", obj, identifier); return; }\
- #ifdef INFIX;\
- if (obj has infix__watching || (debug_flag & 15))\
- RT__TrPS(obj,identifier,(x-->0)+1);\
- #ifnot; #ifdef DEBUG;\
- if (debug_flag & 15) RT__TrPS(obj,identifier,(x-->0)+1);\
- #endif; #endif;\
- return (x-->0)++;\
- ]", "", "", "", "", ""
- },
- {
- /* DB__Pr: --(individual property) */
-
- "DB__Pr",
- "obj identifier x;\
- x = obj.&identifier;\
- if (x==0) { RT__Err(\"decrement\", obj, identifier); return; }\
- #ifdef INFIX;\
- if (obj has infix__watching || (debug_flag & 15)) RT__TrPS(obj,identifier,(x-->0)-1);\
- #ifnot; #ifdef DEBUG;\
- if (debug_flag & 15) RT__TrPS(obj,identifier,(x-->0)-1);\
- #endif; #endif;\
- return --(x-->0);\
- ]", "", "", "", "", ""
- },
- {
- /* DA__Pr: (individual property)-- */
-
- "DA__Pr",
- "obj identifier x;\
- x = obj.&identifier;\
- if (x==0) { RT__Err(\"decrement\", obj, identifier); return; }\
- #ifdef INFIX;\
- if (obj has infix__watching || (debug_flag & 15)) RT__TrPS(obj,identifier,(x-->0)-1);\
- #ifnot; #ifdef DEBUG;\
- if (debug_flag & 15) RT__TrPS(obj,identifier,(x-->0)-1);\
- #endif; #endif;\
- return (x-->0)--;\
- ]", "", "", "", "", ""
- },
- {
- /* RA__Pr: Read the property address of a given property value.
- Returns zero if it isn't provided by the object. This
- understands all the same concerns as RL__Pr().
- */
- "RA__Pr",
- "obj id cla prop ix;\
- if (id & $FFFF0000) {\
- cla = #classes_table-->(id & $FFFF);\
- if (~~(obj ofclass cla)) return 0;\
- @ushiftr id 16 id;\
- obj = cla;\
- }\
- prop = CP__Tab(obj, id);\
- if (prop==0) return 0;\
- if (obj in Class && cla == 0) {\
- if (id < INDIV_PROP_START || id >= INDIV_PROP_START+8)\
- return 0;\
- }\
- if (self ~= obj) {\
- @aloadbit prop 72 ix;\
- if (ix) return 0;\
- }\
- return prop-->1;\
- ]", "", "", "", "", ""
- },
-
- {
- /* RL__Pr: Read the property length of a given property value.
- Returns zero if it isn't provided by the object. This understands
- inherited values (of the form class::prop) as well as simple
- property ids and the special metaclass methods. It also knows
- that private properties can only be read if (self == obj).
- */
- "RL__Pr",
- "obj id cla prop ix;\
- if (id & $FFFF0000) {\
- cla = #classes_table-->(id & $FFFF);\
- if (~~(obj ofclass cla)) return 0;\
- @ushiftr id 16 id;\
- obj = cla;\
- }\
- prop = CP__Tab(obj, id);\
- if (prop==0) return 0;\
- if (obj in Class && cla == 0) {\
- if (id < INDIV_PROP_START || id >= INDIV_PROP_START+8)\
- return 0;\
- }\
- if (self ~= obj) {\
- @aloadbit prop 72 ix;\
- if (ix) return 0;\
- }\
- @aloads prop 1 ix;\
- return WORDSIZE * ix;\
- ]", "", "", "", "", ""
- },
- {
- /* RA__Sc: Implement the \"superclass\" (::) operator. This
- returns an compound property identifier, which is a
- 32-bit value.
- */
- "RA__Sc",
- "cla id j;\
- if ((cla notin Class) && (cla ~= Class or String or Routine or Object)) {\
- RT__Err(\"be a '::' superclass\", cla, -1);\
- rfalse;\
- }\
- for (j=0 : #classes_table-->j ~= 0 : j++) {\
- if (cla == #classes_table-->j) {\
- return (id * $10000 + j);\
- }\
- }\
- RT__Err(\"make use of\", cla, id);\
- rfalse;\
- ]", "", "", "", "", ""
- },
-
- {
- /* OP__Pr: Test whether the given object provides the given property.
- This winds up calling RA__Pr().
- */
- "OP__Pr",
- "obj id zr;\
- zr = Z__Region(obj);\
- if (zr == 3) {\
- if (id == print or print_to_array) rtrue;\
- rfalse;\
- }\
- if (zr == 2) {\
- if (id == call) rtrue;\
- rfalse;\
- }\
- if (zr ~= 1) rfalse;\
- if (id >= INDIV_PROP_START && id < INDIV_PROP_START+8) {\
- if (obj in Class) rtrue;\
- }\
- if (obj.&id ~= 0)\
- rtrue;\
- rfalse;\
- ]", "", "", "", "", ""
- },
- {
- /* OC__Cl: Test whether the given object is of the given class.
- (implements the OfClass operator.)
- */
- "OC__Cl",
- "obj cla zr jx inlist inlistlen;\
- zr = Z__Region(obj);\
- if (zr == 3) {\
- if (cla == String) rtrue;\
- rfalse;\
- }\
- if (zr == 2) {\
- if (cla == Routine) rtrue;\
- rfalse;\
- }\
- if (zr ~= 1) rfalse;\
- if (cla == Class) {\
- if (obj in Class\
- || obj == Class or String or Routine or Object)\
- rtrue;\
- rfalse;\
- }\
- if (cla == Object) {\
- if (obj in Class\
- || obj == Class or String or Routine or Object)\
- rfalse;\
- rtrue;\
- }\
- if (cla == String or Routine) rfalse;\
- if (cla notin Class) {\
- RT__Err(\"apply 'ofclass' for\", cla, -1);\
- rfalse;\
- }\
- inlist = obj.&2;\
- if (inlist == 0) rfalse;\
- inlistlen = (obj.#2) / WORDSIZE;\
- for (jx=0 : jx<inlistlen : jx++) {\
- if (inlist-->jx == cla) rtrue;\
- }\
- rfalse;\
- ]", "", "", "", "", ""
- },
-
- {
- /* Copy__Primitive: Routine to \"deep copy\" objects.
- */
- "Copy__Primitive",
- "o1 o2 p1 p2 pcount i j propid proplen val pa1 pa2;\
- for (i=1 : i<=NUM_ATTR_BYTES : i++) {\
- o1->i = o2->i;\
- }\
- p2 = o2-->GOBJFIELD_PROPTAB;\
- pcount = p2-->0;\
- p2 = p2+4;\
- for (i=0 : i<pcount : i++) {\
- @aloads p2 0 propid;\
- @aloads p2 1 proplen;\
- p1 = CP__Tab(o1, propid);\
- if (p1) {\
- @aloads p1 1 val;\
- if (proplen == val) {\
- @aloads p2 4 val;\
- @astores p1 4 val;\
- pa1 = p1-->1;\
- pa2 = p2-->1;\
- for (j=0 : j<proplen : j++)\
- pa1-->j = pa2-->j;\
- }\
- }\
- p2 = p2+10;\
- }\
- ]", "", "", "", "", ""
- },
- { /* RT__Err: for run-time errors occurring in the above: e.g.,
- an attempt to write to a non-existent individual
- property */
-
- "RT__Err",
- "crime obj id size p q;\
- print \"^[** Programming error: \";\
- if (crime<0) jump RErr;\
- if (crime==1) { print \"class \"; q = obj-->GOBJFIELD_NAME; @streamstr q;\
- \": 'create' can have 0 to 3 parameters only **]\";}\
- if (crime == 40) \"tried to change printing variable \",\
- obj, \"; must be 0 to \", #dynam_string_table-->0-1, \" **]\";\
- if (crime == 32) \"objectloop broken because the object \",\
- (name) obj, \" was moved while the loop passed through it **]\";\
- if (crime == 33) \"tried to print (char) \", obj,\
- \", which is not a valid Glk character code for output **]\";\
- if (crime == 34) \"tried to print (address) on something not the \",\
- \"address of a dict word **]\";\
- if (crime == 35) \"tried to print (string) on something not a \",\
- \"string **]\";\
- if (crime == 36) \"tried to print (object) on something not an \",\
- \"object or class **]\";\
- if (crime == 37) \"tried to call Glulx print_to_array with only \",\
- \"one argument **]\";",
- "if (crime < 32) { print \"tried to \";\
- if (crime >= 28) { if (crime==28 or 29) print \"read from \";\
- else print \"write to \";\
- if (crime==29 or 31) print \"-\"; print \"->\", obj,\
- \" in the\"; switch(size&7){0,1:q=0; 2:print \" string\";\
- q=1; 3:print \" table\";q=1; 4:print \" buffer\";q=WORDSIZE;} \
- if(size&16) print\" (->)\"; if(size&8) print\" (-->)\";\
- \" array ~\", (string) #array_names_offset-->(p+1),\
- \"~, which has entries \", q, \" up to \",id,\" **]\"; }\
- if (crime >= 24 && crime <=27) { if (crime<=25) print \"read\";\
- else print \"write\"; print \" outside memory using \";\
- switch(crime) { 24,26:\"-> **]\"; 25,27:\"--> **]\"; } }\
- if (crime < 4) print \"test \"; else\
- if (crime < 12 || crime > 20) print \"find the \"; else\
- if (crime < 14) print \"use \";\
- if (crime==20) \"divide by zero **]\"; print \"~\";\
- switch(crime) {\
- 2: print \"in~ or ~notin\"; 3: print \"has~ or ~hasnt\";\
- 4: print \"parent\"; 5: print \"eldest\"; 6: print \"child\";\
- 7: print \"younger\"; 8: print \"sibling\"; 9: print \"children\";\
- 10: print \"youngest\"; 11: print \"elder\";\
- 12: print \"objectloop\"; 13: print \"}~ at end of ~objectloop\";\
- 14: \"give~ an attribute to \", (name) obj, \" **]\";\
- 15: \"remove~ \", (name) obj, \" **]\";",
- "16,17,18: print \"move~ \", (name) obj, \" to \", (name) id;\
- if (crime==18) { print \", which would make a loop: \",(name) obj;\
- p=id; if (p==obj) p=obj;\
- else do { print \" in \", (name) p; p=parent(p);} until (p==obj);\
- \" in \", (name) p, \" **]\"; }\
- \" **]\"; 19: \"give~ or test ~has~ or ~hasnt~ with a non-attribute"\
- " on the object \",(name) obj,\" **]\";\
- 21: print \".&\"; 22: print \".#\"; 23: print \".\"; }\
- \"~ of \", (name) obj, \" **]\"; }",
- ".RErr; if (obj==0 || obj->0>=$70 && obj->0<=$7F) {\
- if (obj && obj in Class) print \"class \";\
- if (obj) print (object) obj;else print \"nothing\";print\" \";}\
- print \"(object number \", obj, \") \";\
- if (id<0) print \"is not of class \", (name) -id;",
- "else\
- { print \" has no property \", (property) id;\
- p = #identifiers_table;\
- size = INDIV_PROP_START + p-->3;\
- if (id<0 || id>=size)\
- print \" (and nor has any other object)\";\
- }\
- print \" to \", (string) crime, \" **]^\";\
- ]", ""
- },
- {
- /* Z__Region: Determines whether a value is:
- 1 an object number
- 2 a code address
- 3 a string address
- 0 none of the above
- */
- "Z__Region",
- "addr tb endmem;\
- if (addr<36) rfalse;\
- @getmemsize endmem;\
- @jgeu addr endmem?outrange;\
- tb=addr->0;\
- if (tb >= $E0) return 3;\
- if (tb >= $C0) return 2;\
- if (tb >= $70 && tb <= $7F && addr >= (0-->2)) return 1;\
- .outrange;\
- rfalse;\
- ]", "", "", "", "", ""
- },
- { /* Unsigned__Compare: returns 1 if x>y, 0 if x=y, -1 if x<y */
-
- "Unsigned__Compare",
- "x y;\
- @jleu x y ?lesseq;\
- return 1;\
- .lesseq;\
- @jeq x y ?equal;\
- return -1;\
- .equal;\
- return 0;\
- ]", "", "", "", "", ""
- },
- { /* Meta__class: returns the metaclass of an object */
-
- "Meta__class",
- "obj;\
- switch(Z__Region(obj))\
- { 2: return Routine;\
- 3: return String;\
- 1: if (obj in Class\
- || obj == Class or String or Routine or Object)\
- return Class;\
- return Object;\
- }\
- rfalse;\
- ]", "", "", "", "", ""
- },
-
- {
- /* CP__Tab: Search a property table for the given identifier.
- The definition here is a bit different from the Z-code veneer.
- This just searches the property table of obj for an entry with
- the given identifier. It return the address of the property
- entry, or 0 if nothing found. (Remember that the value returned
- is not the address of the property *data*; it's the structure
- which contains the address/length/flags.)
- */
- "CP__Tab",
- "obj id otab max res;\
- if (Z__Region(obj)~=1) {RT__Err(23, obj); rfalse;}\
- otab = obj-->GOBJFIELD_PROPTAB;\
- if (otab == 0) return 0;\
- max = otab-->0;\
- otab = otab+4;\
- @binarysearch id 2 otab 10 max 0 0 res;\
- return res;\
- ]", "", "", "", "", ""
- },
-
- {
- /* Cl__Ms: Implements the five message-receiving properties of
- Classes.
- */
- "Cl__Ms",
- "_vararg_count obj id a b x y;\
- @copy sp obj;\
- @copy sp id;\
- _vararg_count = _vararg_count - 2;\
- switch (id) {\
- create:\
- if (children(obj) <= 1) rfalse;\
- x = child(obj);\
- remove x;\
- if (x provides create) {\
- @copy create sp;\
- @copy x sp;\
- y = _vararg_count + 2;\
- @call CA__Pr y 0;\
- }\
- return x;\
- recreate:\
- @copy sp a;\
- _vararg_count--;\
- if (~~(a ofclass obj)) {\
- RT__Err(\"recreate\", a, -obj);\
- rfalse;\
- }\
- if (a provides destroy)\
- a.destroy();\
- Copy__Primitive(a, child(obj));\
- if (a provides create) {\
- @copy create sp;\
- @copy a sp;\
- y = _vararg_count + 2;\
- @call CA__Pr y 0;\
- }\
- rfalse;\
- destroy:\
- @copy sp a;\
- _vararg_count--;\
- if (~~(a ofclass obj)) {\
- RT__Err(\"destroy\", a, -obj);\
- rfalse;\
- }\
- if (a provides destroy)\
- a.destroy();\
- Copy__Primitive(a, child(obj));\
- move a to obj;\
- rfalse;\
- remaining:\
- return children(obj)-1;\
- copy:\
- @copy sp a;\
- @copy sp b;\
- _vararg_count = _vararg_count - 2;\
- if (~~(a ofclass obj)) {\
- RT__Err(\"copy\", a, -obj);\
- rfalse;\
- }\
- if (~~(b ofclass obj)) {\
- RT__Err(\"copy\", b, -obj);\
- rfalse;\
- }\
- Copy__Primitive(a, b);\
- rfalse;\
- }\
- ]", "", "", "", "", ""
- },
- {
- /* RT__ChT: Check at run-time that a proposed object move is legal.
- Cause error and do nothing if not; otherwise move
- */
- "RT__ChT",
- "obj1 obj2 ix;\
- if (obj1==0 || Z__Region(obj1)~=1\
- || (obj1 == Class or String or Routine or Object) || obj1 in Class)\
- return RT__Err(16, obj1, obj2);\
- if (obj2==0 || Z__Region(obj2)~=1\
- || (obj2 == Class or String or Routine or Object) || obj2 in Class)\
- return RT__Err(17, obj1, obj2);\
- ix = obj2;\
- while (ix ~= 0) {\
- if (ix==obj1) return RT__Err(18, obj1, obj2);\
- ix = parent(ix);\
- }\
- #ifdef INFIX;\
- if (obj1 has infix__watching\
- || obj2 has infix__watching || (debug_flag & 15))\
- print \"[Moving \", (name) obj1, \" to \", (name) obj2, \"]^\";\
- #ifnot; #ifdef DEBUG;\
- if (debug_flag & 15)\
- print \"[Moving \", (name) obj1, \" to \", (name) obj2, \"]^\";\
- #endif; #endif;\
- OB__Move(obj1, obj2);\
- ]", "", "", "", "", ""
- },
- {
- /* RT__ChR: Check at run-time that a proposed object remove is legal.
- Cause error and do nothing if not; otherwise remove
- */
- "RT__ChR",
- "obj1;\
- if (obj1==0 || Z__Region(obj1)~=1\
- || (obj1 == Class or String or Routine or Object) || obj1 in Class)\
- return RT__Err(15, obj1);\
- #ifdef INFIX;\
- if (obj1 has infix__watching || (debug_flag & 15))\
- print \"[Removing \", (name) obj1, \"]^\";\
- #ifnot; #ifdef DEBUG;\
- if (debug_flag & 15)\
- print \"[Removing \", (name) obj1, \"]^\";\
- #endif; #endif;\
- OB__Remove(obj1);\
- ]", "", "", "", "", ""
- },
- { /* RT__ChG: check at run-time that a proposed attr give is legal
- cause error and do nothing if not; otherwise give */
-
- "RT__ChG",
- "obj1 a;\
- if (Z__Region(obj1) ~= 1) return RT__Err(14,obj1);\
- if (obj1 in Class || obj1 == Class or String or Routine or Object)\
- return RT__Err(14,obj1);\
- if (a<0 || a>=NUM_ATTR_BYTES*8) return RT__Err(19,obj1);\
- if (obj1 has a) return;",
- "#ifdef INFIX;\
- if (a ~= workflag && (obj1 has infix__watching || (debug_flag & 15)))\
- print \"[Giving \", (name) obj1, \" \", (DebugAttribute) a, \"]^\";\
- #ifnot; #ifdef DEBUG;\
- if (a ~= workflag && debug_flag & 15)\
- print \"[Giving \", (name) obj1, \" \", (DebugAttribute) a, \"]^\";\
- #endif; #endif;\
- give obj1 a; ]", "", "", "", ""
- },
- { /* RT__ChGt: check at run-time that a proposed attr give ~ is legal
- cause error and do nothing if not; otherwise give */
-
- "RT__ChGt",
- "obj1 a;\
- if (Z__Region(obj1) ~= 1) return RT__Err(14,obj1);\
- if (obj1 in Class || obj1 == Class or String or Routine or Object)\
- return RT__Err(14,obj1);\
- if (a<0 || a>=NUM_ATTR_BYTES*8) return RT__Err(19,obj1);\
- if (obj1 hasnt a) return;",
- "#ifdef INFIX;\
- if (a ~= workflag && (obj1 has infix__watching || (debug_flag & 15)))\
- print \"[Giving \",(name) obj1,\" @@126\", (DebugAttribute) a, \"]^\";\
- #ifnot; #ifdef DEBUG;\
- if (a ~= workflag && debug_flag & 15)\
- print \"[Giving \",(name) obj1,\" @@126\", (DebugAttribute) a, \"]^\";\
- #endif; #endif;\
- give obj1 ~a; ]", "", "", "", ""
- },
- {
- /* RT__ChPS: Check at run-time that a proposed property set is legal.
- Cause error and do nothing if not; otherwise make it.
- */
- "RT__ChPS",
- "obj prop val res;\
- if (obj==0 || Z__Region(obj)~=1\
- || (obj == Class or String or Routine or Object) || obj in Class)\
- return RT__Err(\"set\", obj, prop);\
- res = WV__Pr(obj, prop, val);\
- #ifdef INFIX;\
- if (obj has infix__watching || (debug_flag & 15)) RT__TrPS(obj,prop,val);\
- #ifnot; #ifdef DEBUG;\
- if (debug_flag & 15) RT__TrPS(obj,prop,val);\
- #endif; #endif;\
- return res;\
- ]", "", "", "", "", ""
- },
- { /* RT__ChPR: check at run-time that a proposed property read is legal.
- cause error and return 0 if not; otherwise read it */
- "RT__ChPR",
- "obj prop val;\
- if (obj==0 or Class or String or Routine or Object || Z_Region(obj)~=1 )\
- {RT__Err(\"read\", obj, prop); obj=2;}\
- val = RV__Pr(obj, prop);",
- "return val; ]", "", "", "", ""
- },
- { /* RT__TrPS: trace property settings */
-
- "RT__TrPS",
- "obj prop val;\
- print \"[Setting \",(name) obj,\".\",(property) prop,\
- \" to \",val,\"]^\"; ]",
- "", "", "", "", ""
- },
- {
- /* RT__ChLDB: Check at run-time that it's safe to load a byte
- and return the byte.
- */
- "RT__ChLDB",
- "base offset a b val;\
- a=base+offset;\
- @getmemsize b;\
- if (Unsigned__Compare(a, b) >= 0)\
- return RT__Err(24);\
- @aloadb base offset val;\
- return val;\
- ]", "", "", "", "", ""
- },
-
- {
- /* RT__ChLDW: Check at run-time that it's safe to load a word
- and return the word
- */
- "RT__ChLDW",
- "base offset a b val;\
- a=base+WORDSIZE*offset;\
- @getmemsize b;\
- if (Unsigned__Compare(a, b) >= 0)\
- return RT__Err(25);\
- @aload base offset val;\
- return val;\
- ]", "", "", "", "", ""
- },
-
- {
- /* RT__ChSTB: Check at run-time that it's safe to store a byte
- and store it
- */
- "RT__ChSTB",
- "base offset val a b;\
- a=base+offset;\
- @getmemsize b;\
- if (Unsigned__Compare(a, b) >= 0) jump ChSTB_Fail;\
- @aload 0 2 b;\
- if (Unsigned__Compare(a, b) < 0) jump ChSTB_Fail;\
- @astoreb base offset val;\
- return;\
- .ChSTB_Fail;\
- return RT__Err(26);\
- ]", "", "", "", "", ""
- },
-
- {
- /* RT__ChSTW: Check at run-time that it's safe to store a word
- and store it
- */
- "RT__ChSTW",
- "base offset val a b;\
- a=base+WORDSIZE*offset;\
- @getmemsize b;\
- if (Unsigned__Compare(a, b) >= 0) jump ChSTW_Fail;\
- @aload 0 2 b;\
- if (Unsigned__Compare(a, b) < 0) jump ChSTW_Fail;\
- @astore base offset val;\
- return;\
- .ChSTW_Fail;\
- return RT__Err(27);\
- ]", "", "", "", "", ""
- },
-
- {
- /* RT__ChPrintC: Check at run-time that it's safe to print (char)
- and do so.
- */
- "RT__ChPrintC",
- "c;\
- if (c<10 || (c>10 && c<32) || (c>126 && c<160))\
- return RT__Err(33,c);\
- if (c>=0 && c<256)\
- @streamchar c;\
- else\
- @streamunichar c;\
- ]", "", "", "", "", ""
- },
- {
- /* RT__ChPrintA: Check at run-time that it's safe to print (address)
- and do so.
- */
- "RT__ChPrintA",
- "addr endmem;\
- if (addr<36)\
- return RT__Err(34);\
- @getmemsize endmem;\
- if (Unsigned__Compare(addr, endmem) >= 0)\
- return RT__Err(34);\
- if (addr->0 ~= $60)\
- return RT__Err(34);\
- Print__Addr(addr);\
- ]", "", "", "", "", ""
- },
- {
- /* Check at run-time that it's safe to print (string) and do so.
- */
- "RT__ChPrintS",
- "str;\
- if (Z__Region(str) ~= 3)\
- return RT__Err(35);\
- @streamstr str;\
- ]", "", "", "", "", ""
- },
- {
- /* Check at run-time that it's safe to print (object) and do so.
- */
- "RT__ChPrintO",
- "obj;\
- if (Z__Region(obj) ~= 1)\
- return RT__Err(36);\
- @aload obj GOBJFIELD_NAME sp; @streamstr sp;\
- ]", "", "", "", "", ""
- },
- {
- /* OB__Move: Move an object within the object tree. This does no
- more error checking than the Z-code \"move\" opcode.
- */
- "OB__Move",
- "obj dest par chi sib;\
- par = obj-->GOBJFIELD_PARENT;\
- if (par ~= 0) {\
- chi = par-->GOBJFIELD_CHILD;\
- if (chi == obj) {\
- par-->GOBJFIELD_CHILD = obj-->GOBJFIELD_SIBLING;\
- }\
- else {\
- while (1) {\
- sib = chi-->GOBJFIELD_SIBLING;\
- if (sib == obj)\
- break;\
- chi = sib;\
- }\
- chi-->GOBJFIELD_SIBLING = obj-->GOBJFIELD_SIBLING;\
- }\
- }\
- obj-->GOBJFIELD_SIBLING = dest-->GOBJFIELD_CHILD;\
- obj-->GOBJFIELD_PARENT = dest;\
- dest-->GOBJFIELD_CHILD = obj;\
- rfalse;\
- ]", "", "", "", "", ""
- },
-
- {
- /* OB__Remove: Remove an object from the tree. This does no
- more error checking than the Z-code \"remove\" opcode.
- */
- "OB__Remove",
- "obj par chi sib;\
- par = obj-->GOBJFIELD_PARENT;\
- if (par == 0)\
- rfalse;\
- chi = par-->GOBJFIELD_CHILD;\
- if (chi == obj) {\
- par-->GOBJFIELD_CHILD = obj-->GOBJFIELD_SIBLING;\
- }\
- else {\
- while (1) {\
- sib = chi-->GOBJFIELD_SIBLING;\
- if (sib == obj)\
- break;\
- chi = sib;\
- }\
- chi-->GOBJFIELD_SIBLING = obj-->GOBJFIELD_SIBLING;\
- }\
- obj-->GOBJFIELD_SIBLING = 0;\
- obj-->GOBJFIELD_PARENT = 0;\
- rfalse;\
- ]", "", "", "", "", ""
- },
-
- {
- /* Print__Addr: Handle the print (address) statement. In Glulx,
- this behaves differently than on the Z-machine; it can *only*
- print dictionary words.
- */
- "Print__Addr",
- "addr ix ch;\
- if (addr->0 ~= $60) {\
- print \"(\", addr, \": not dict word)\";\
- return;\
- }\
- for (ix=1 : ix <= DICT_WORD_SIZE : ix++) {\
- #ifndef DICT_IS_UNICODE;\
- ch = addr->ix;\
- #ifnot;\
- ch = addr-->ix;\
- #endif;\
- if (ch == 0) return;\
- print (char) ch;\
- }\
- ]", "", "", "", "", ""
- },
-
- {
- /* Glk__Wrap: This is a wrapper for the @glk opcode. It just passes
- all its arguments into the Glk dispatcher, and returns the Glk
- call result.
- */
- "Glk__Wrap",
- "_vararg_count callid retval;\
- @copy sp callid;\
- _vararg_count = _vararg_count - 1;\
- @glk callid _vararg_count retval;\
- return retval;\
- ]", "", "", "", "", ""
- },
-
- {
- /* Dynam__String: Set dynamic string (printing variable) num to the
- given val, which can be any string or function.
- */
- "Dynam__String",
- "num val;\
- if (num < 0 || num >= #dynam_string_table-->0)\
- return RT__Err(40, num);\
- (#dynam_string_table)-->(num+1) = val;\
- ]", "", "", "", "", ""
- }
-
-};
-
-
-static void mark_as_needed_z(int code)
-{
- ASSERT_ZCODE();
- if (veneer_routine_needs_compilation[code] == VR_UNUSED)
- { veneer_routine_needs_compilation[code] = VR_CALLED;
- /* Here each routine must mark every veneer routine it explicitly
- calls as needed */
- switch(code)
- { case WV__Pr_VR:
- mark_as_needed_z(RT__TrPS_VR);
- mark_as_needed_z(RT__Err_VR);
- return;
- case RV__Pr_VR:
- mark_as_needed_z(RT__Err_VR);
- return;
- case CA__Pr_VR:
- mark_as_needed_z(Z__Region_VR);
- mark_as_needed_z(Cl__Ms_VR);
- mark_as_needed_z(RT__Err_VR);
- return;
- case IB__Pr_VR:
- case IA__Pr_VR:
- case DB__Pr_VR:
- case DA__Pr_VR:
- mark_as_needed_z(RT__Err_VR);
- mark_as_needed_z(RT__TrPS_VR);
- return;
- case RA__Pr_VR:
- mark_as_needed_z(CP__Tab_VR);
- return;
- case RA__Sc_VR:
- mark_as_needed_z(RT__Err_VR);
- return;
- case OP__Pr_VR:
- mark_as_needed_z(Z__Region_VR);
- return;
- case OC__Cl_VR:
- mark_as_needed_z(Z__Region_VR);
- mark_as_needed_z(RT__Err_VR);
- return;
- case Z__Region_VR:
- mark_as_needed_z(Unsigned__Compare_VR);
- return;
- case Metaclass_VR:
- mark_as_needed_z(Z__Region_VR);
- return;
- case Cl__Ms_VR:
- mark_as_needed_z(RT__Err_VR);
- mark_as_needed_z(Copy__Primitive_VR);
- return;
- case RT__ChR_VR:
- case RT__ChT_VR:
- case RT__ChG_VR:
- case RT__ChGt_VR:
- case RT__ChPR_VR:
- mark_as_needed_z(RT__Err_VR);
- return;
- case RT__ChPS_VR:
- mark_as_needed_z(RT__Err_VR);
- mark_as_needed_z(RT__TrPS_VR);
- return;
- case RT__ChLDB_VR:
- case RT__ChLDW_VR:
- case RT__ChSTB_VR:
- case RT__ChSTW_VR:
- mark_as_needed_z(Unsigned__Compare_VR);
- mark_as_needed_z(RT__Err_VR);
- return;
- case RT__ChPrintC_VR:
- mark_as_needed_z(RT__Err_VR);
- return;
- case RT__ChPrintA_VR:
- mark_as_needed_z(Unsigned__Compare_VR);
- mark_as_needed_z(RT__Err_VR);
- return;
- case RT__ChPrintS_VR:
- case RT__ChPrintO_VR:
- mark_as_needed_z(RT__Err_VR);
- mark_as_needed_z(Z__Region_VR);
- return;
- }
- }
-}
-
-static void mark_as_needed_g(int code)
-{
- ASSERT_GLULX();
- if (veneer_routine_needs_compilation[code] == VR_UNUSED)
- { veneer_routine_needs_compilation[code] = VR_CALLED;
- /* Here each routine must mark every veneer routine it explicitly
- calls as needed */
- switch(code)
- {
- case PrintShortName_VR:
- mark_as_needed_g(Metaclass_VR);
- return;
- case Print__Pname_VR:
- mark_as_needed_g(PrintShortName_VR);
- return;
- case WV__Pr_VR:
- mark_as_needed_g(RA__Pr_VR);
- mark_as_needed_g(RT__TrPS_VR);
- mark_as_needed_g(RT__Err_VR);
- return;
- case RV__Pr_VR:
- mark_as_needed_g(RA__Pr_VR);
- mark_as_needed_g(RT__Err_VR);
- return;
- case CA__Pr_VR:
- mark_as_needed_g(RA__Pr_VR);
- mark_as_needed_g(RL__Pr_VR);
- mark_as_needed_g(PrintShortName_VR);
- mark_as_needed_g(Print__Pname_VR);
- mark_as_needed_g(Z__Region_VR);
- mark_as_needed_g(Cl__Ms_VR);
- mark_as_needed_g(Glk__Wrap_VR);
- mark_as_needed_g(RT__Err_VR);
- return;
- case IB__Pr_VR:
- case IA__Pr_VR:
- case DB__Pr_VR:
- case DA__Pr_VR:
- mark_as_needed_g(RT__Err_VR);
- mark_as_needed_g(RT__TrPS_VR);
- return;
- case RA__Pr_VR:
- mark_as_needed_g(OC__Cl_VR);
- mark_as_needed_g(CP__Tab_VR);
- return;
- case RL__Pr_VR:
- mark_as_needed_g(OC__Cl_VR);
- mark_as_needed_g(CP__Tab_VR);
- return;
- case RA__Sc_VR:
- mark_as_needed_g(OC__Cl_VR);
- mark_as_needed_g(RT__Err_VR);
- return;
- case OP__Pr_VR:
- mark_as_needed_g(RA__Pr_VR);
- mark_as_needed_g(Z__Region_VR);
- return;
- case OC__Cl_VR:
- mark_as_needed_g(RA__Pr_VR);
- mark_as_needed_g(RL__Pr_VR);
- mark_as_needed_g(Z__Region_VR);
- mark_as_needed_g(RT__Err_VR);
- return;
- case Copy__Primitive_VR:
- mark_as_needed_g(CP__Tab_VR);
- return;
- case Z__Region_VR:
- mark_as_needed_g(Unsigned__Compare_VR);
- return;
- case CP__Tab_VR:
- case Metaclass_VR:
- mark_as_needed_g(Z__Region_VR);
- return;
- case Cl__Ms_VR:
- mark_as_needed_g(OC__Cl_VR);
- mark_as_needed_g(OP__Pr_VR);
- mark_as_needed_g(RT__Err_VR);
- mark_as_needed_g(Copy__Primitive_VR);
- mark_as_needed_g(OB__Remove_VR);
- mark_as_needed_g(OB__Move_VR);
- return;
- case RT__ChG_VR:
- case RT__ChGt_VR:
- mark_as_needed_g(RT__Err_VR);
- return;
- case RT__ChR_VR:
- mark_as_needed_g(RT__Err_VR);
- mark_as_needed_g(Z__Region_VR);
- mark_as_needed_g(OB__Remove_VR);
- return;
- case RT__ChT_VR:
- mark_as_needed_g(RT__Err_VR);
- mark_as_needed_g(Z__Region_VR);
- mark_as_needed_g(OB__Move_VR);
- return;
- case RT__ChPS_VR:
- mark_as_needed_g(RT__Err_VR);
- mark_as_needed_g(RT__TrPS_VR);
- mark_as_needed_g(WV__Pr_VR);
- return;
- case RT__ChPR_VR:
- mark_as_needed_g(RT__Err_VR);
- mark_as_needed_g(RV__Pr_VR); return;
- case RT__ChLDB_VR:
- case RT__ChLDW_VR:
- case RT__ChSTB_VR:
- case RT__ChSTW_VR:
- mark_as_needed_g(Unsigned__Compare_VR);
- mark_as_needed_g(RT__Err_VR);
- return;
- case RT__ChPrintC_VR:
- mark_as_needed_g(RT__Err_VR);
- return;
- case RT__ChPrintA_VR:
- mark_as_needed_g(Unsigned__Compare_VR);
- mark_as_needed_g(RT__Err_VR);
- mark_as_needed_g(Print__Addr_VR);
- return;
- case RT__ChPrintS_VR:
- case RT__ChPrintO_VR:
- mark_as_needed_g(RT__Err_VR);
- mark_as_needed_g(Z__Region_VR);
- return;
- case Print__Addr_VR:
- mark_as_needed_g(RT__Err_VR);
- return;
- case Dynam__String_VR:
- mark_as_needed_g(RT__Err_VR);
- return;
- }
- }
-}
-
-extern assembly_operand veneer_routine(int code)
-{ assembly_operand AO;
- if (!glulx_mode) {
- INITAOTV(&AO, LONG_CONSTANT_OT, code);
- AO.marker = VROUTINE_MV;
- mark_as_needed_z(code);
- }
- else {
- INITAOTV(&AO, CONSTANT_OT, code);
- AO.marker = VROUTINE_MV;
- mark_as_needed_g(code);
- }
- return(AO);
-}
-
-static void compile_symbol_table_routine(void)
-{ int32 j, nl, arrays_l, routines_l, constants_l;
- assembly_operand AO, AO2, AO3;
-
- /* Assign local var names for the benefit of the debugging information
- file. */
- local_variable_texts[0] = "dummy1";
- local_variable_texts[1] = "dummy2";
-
- veneer_mode = TRUE; j = symbol_index("Symb__Tab", -1);
- assign_symbol(j,
- assemble_routine_header(2, FALSE, "Symb__Tab", FALSE, j),
- ROUTINE_T);
- sflags[j] |= SYSTEM_SFLAG + USED_SFLAG;
- if (trace_fns_setting==3) sflags[j] |= STAR_SFLAG;
-
- if (!glulx_mode) {
-
- if (define_INFIX_switch == FALSE)
- { assemblez_0(rfalse_zc);
- variable_usage[1] = TRUE;
- variable_usage[2] = TRUE;
- assemble_routine_end(FALSE, null_debug_locations);
- veneer_mode = FALSE;
- return;
- }
-
- INITAOTV(&AO, VARIABLE_OT, 1);
- INITAOT(&AO2, SHORT_CONSTANT_OT);
- INITAOT(&AO3, LONG_CONSTANT_OT);
-
- arrays_l = next_label++;
- routines_l = next_label++;
- constants_l = next_label++;
-
- sequence_point_follows = FALSE;
- AO2.value = 1;
- assemblez_2_branch(je_zc, AO, AO2, arrays_l, TRUE);
- sequence_point_follows = FALSE;
- AO2.value = 2;
- assemblez_2_branch(je_zc, AO, AO2, routines_l, TRUE);
- sequence_point_follows = FALSE;
- AO2.value = 3;
- assemblez_2_branch(je_zc, AO, AO2, constants_l, TRUE);
- sequence_point_follows = FALSE;
- assemblez_0(rtrue_zc);
-
- assemble_label_no(arrays_l);
- AO.value = 2;
- for (j=0; j<no_arrays; j++)
- { { AO2.value = j;
- if (AO2.value<256) AO2.type = SHORT_CONSTANT_OT;
- else AO2.type = LONG_CONSTANT_OT;
- nl = next_label++;
- sequence_point_follows = FALSE;
- assemblez_2_branch(je_zc, AO, AO2, nl, FALSE);
- AO3.value = array_sizes[j];
- AO3.marker = 0;
- assemblez_store(temp_var2, AO3);
- AO3.value = array_types[j];
- if (sflags[array_symbols[j]] & (INSF_SFLAG+SYSTEM_SFLAG))
- AO3.value = AO3.value + 16;
- AO3.marker = 0;
- assemblez_store(temp_var3, AO3);
- AO3.value = svals[array_symbols[j]];
- AO3.marker = ARRAY_MV;
- assemblez_1(ret_zc, AO3);
- assemble_label_no(nl);
- }
- }
- sequence_point_follows = FALSE;
- assemblez_0(rtrue_zc);
- assemble_label_no(routines_l);
- for (j=0; j<no_named_routines; j++)
- { AO2.value = j;
- if (AO2.value<256) AO2.type = SHORT_CONSTANT_OT;
- else AO2.type = LONG_CONSTANT_OT;
- nl = next_label++;
- sequence_point_follows = FALSE;
- assemblez_2_branch(je_zc, AO, AO2, nl, FALSE);
- AO3.value = 0;
- if (sflags[named_routine_symbols[j]]
- & (INSF_SFLAG+SYSTEM_SFLAG)) AO3.value = 16;
- AO3.marker = 0;
- assemblez_store(temp_var3, AO3);
- AO3.value = svals[named_routine_symbols[j]];
- AO3.marker = IROUTINE_MV;
- assemblez_1(ret_zc, AO3);
- assemble_label_no(nl);
- }
- sequence_point_follows = FALSE;
- assemblez_0(rtrue_zc);
-
- assemble_label_no(constants_l);
- for (j=0, no_named_constants=0; j<no_symbols; j++)
- { if (((stypes[j] == OBJECT_T) || (stypes[j] == CLASS_T)
- || (stypes[j] == CONSTANT_T))
- && ((sflags[j] & (UNKNOWN_SFLAG+ACTION_SFLAG))==0))
- { AO2.value = no_named_constants++;
- if (AO2.value<256) AO2.type = SHORT_CONSTANT_OT;
- else AO2.type = LONG_CONSTANT_OT;
- nl = next_label++;
- sequence_point_follows = FALSE;
- assemblez_2_branch(je_zc, AO, AO2, nl, FALSE);
- AO3.value = 0;
- if (stypes[j] == OBJECT_T) AO3.value = 2;
- if (stypes[j] == CLASS_T) AO3.value = 1;
- if (sflags[j] & (INSF_SFLAG+SYSTEM_SFLAG))
- AO3.value = AO3.value + 16;
- AO3.marker = 0;
- assemblez_store(temp_var3, AO3);
- AO3.value = j;
- AO3.marker = SYMBOL_MV;
- assemblez_1(ret_zc, AO3);
- assemble_label_no(nl);
- }
- }
- no_named_constants = 0; AO3.marker = 0;
-
- sequence_point_follows = FALSE;
- assemblez_0(rfalse_zc);
- variable_usage[1] = TRUE;
- variable_usage[2] = TRUE;
- assemble_routine_end(FALSE, null_debug_locations);
- veneer_mode = FALSE;
- }
- else {
-
- if (define_INFIX_switch == FALSE)
- { assembleg_1(return_gc, zero_operand);
- variable_usage[1] = TRUE;
- variable_usage[2] = TRUE;
- assemble_routine_end(FALSE, null_debug_locations);
- veneer_mode = FALSE;
- return;
- }
-
- error("*** Infix symbol-table routine is not yet implemented. ***");
- }
-}
-
-extern void compile_veneer(void)
-{ int i, j, try_veneer_again;
- VeneerRoutine *VRs;
-
- if (module_switch) return;
-
- VRs = (!glulx_mode) ? VRs_z : VRs_g;
-
- /* Called at the end of the pass to insert as much of the veneer as is
- needed and not elsewhere compiled. */
-
- veneer_symbols_base = no_symbols;
-
- /* for (i=0; i<VENEER_ROUTINES; i++)
- printf("%s %d %d %d %d %d %d\n", VRs[i].name,
- strlen(VRs[i].source1), strlen(VRs[i].source2),
- strlen(VRs[i].source3), strlen(VRs[i].source4),
- strlen(VRs[i].source5), strlen(VRs[i].source6)); */
-
- try_veneer_again = TRUE;
- while (try_veneer_again)
- { try_veneer_again = FALSE;
- for (i=0; i<VENEER_ROUTINES; i++)
- { if (veneer_routine_needs_compilation[i] == VR_CALLED)
- { j = symbol_index(VRs[i].name, -1);
- if (sflags[j] & UNKNOWN_SFLAG)
- { veneer_mode = TRUE;
- strcpy(veneer_source_area, VRs[i].source1);
- strcat(veneer_source_area, VRs[i].source2);
- strcat(veneer_source_area, VRs[i].source3);
- strcat(veneer_source_area, VRs[i].source4);
- strcat(veneer_source_area, VRs[i].source5);
- strcat(veneer_source_area, VRs[i].source6);
- assign_symbol(j,
- parse_routine(veneer_source_area, FALSE,
- VRs[i].name, TRUE, j),
- ROUTINE_T);
- veneer_mode = FALSE;
- if (trace_fns_setting==3) sflags[j] |= STAR_SFLAG;
- }
- else
- { if (stypes[j] != ROUTINE_T)
- error_named("The following name is reserved by Inform for its \
-own use as a routine name; you can use it as a routine name yourself (to \
-override the standard definition) but cannot use it for anything else:",
- VRs[i].name);
- else
- sflags[j] |= USED_SFLAG;
- }
- veneer_routine_address[i] = svals[j];
- veneer_routine_needs_compilation[i] = VR_COMPILED;
- try_veneer_again = TRUE;
- }
- }
- }
-
- compile_symbol_table_routine();
-}
-
-/* ========================================================================= */
-/* Data structure management routines */
-/* ------------------------------------------------------------------------- */
-
-extern void init_veneer_vars(void)
-{
-}
-
-extern void veneer_begin_pass(void)
-{ int i;
- veneer_mode = FALSE;
- for (i=0; i<VENEER_ROUTINES; i++)
- { veneer_routine_needs_compilation[i] = VR_UNUSED;
- veneer_routine_address[i] = 0;
- }
-}
-
-extern void veneer_allocate_arrays(void)
-{ veneer_source_area = my_malloc(16384, "veneer source code area");
-}
-
-extern void veneer_free_arrays(void)
-{ my_free(&veneer_source_area, "veneer source code area");
-}
-
-/* ========================================================================= */
projects / inform.git / blobdiff