--- /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