5 * Permission is hereby granted, free of charge, to any person obtaining a copy of
6 * this software and associated documentation files (the "Software"), to deal in
7 * the Software without restriction, including without limitation the rights to
8 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
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12 * The above copyright notice and this permission notice shall be included in all
13 * copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
29 #define PARSER_HT_FIELDS 0
30 #define PARSER_HT_GLOBALS 1
31 /* beginning of locals */
32 #define PARSER_HT_LOCALS 2
34 #define PARSER_HT_SIZE 1024
35 #define TYPEDEF_HT_SIZE 16
41 ast_expression **globals;
42 ast_expression **fields;
43 ast_function **functions;
44 ast_value **imm_float;
45 ast_value **imm_string;
46 ast_value **imm_vector;
49 /* must be deleted first, they reference immediates and values */
50 ast_value **accessors;
52 ast_value *imm_float_zero;
53 ast_value *imm_float_one;
54 ast_value *imm_vector_zero;
59 ast_function *function;
61 /* All the labels the function defined...
62 * Should they be in ast_function instead?
67 /* A list of hashtables for each scope */
73 /* not to be used directly, we use the hash table */
74 ast_expression **_locals;
76 ast_value **_typedefs;
77 size_t *_blocktypedefs;
82 /* we store the '=' operator info */
83 const oper_info *assign_op;
85 /* TYPE_FIELD -> parser_find_fields is used instead of find_var
86 * TODO: TYPE_VECTOR -> x, y and z are accepted in the gmqcc standard
87 * anything else: type error
91 /* Keep track of our ternary vs parenthesis nesting state.
92 * If we reach a 'comma' operator in a ternary without a paren,
93 * we shall trigger -Wternary-precedence.
95 enum { POT_PAREN, POT_TERNARY1, POT_TERNARY2 } *pot;
101 static void parser_enterblock(parser_t *parser);
102 static bool parser_leaveblock(parser_t *parser);
103 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e);
104 static bool parse_typedef(parser_t *parser);
105 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref);
106 static ast_block* parse_block(parser_t *parser);
107 static bool parse_block_into(parser_t *parser, ast_block *block);
108 static bool parse_statement_or_block(parser_t *parser, ast_expression **out);
109 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases);
110 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma);
111 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma);
113 static void parseerror(parser_t *parser, const char *fmt, ...)
120 con_vprintmsg(LVL_ERROR, parser->lex->tok.ctx.file, parser->lex->tok.ctx.line, "parse error", fmt, ap);
124 /* returns true if it counts as an error */
125 static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
128 int lvl = LVL_WARNING;
130 if (!OPTS_WARN(warntype))
139 con_vprintmsg(lvl, parser->lex->tok.ctx.file, parser->lex->tok.ctx.line, "warning", fmt, ap);
145 static bool GMQCC_WARN genwarning(lex_ctx ctx, int warntype, const char *fmt, ...)
148 int lvl = LVL_WARNING;
150 if (!OPTS_WARN(warntype))
157 con_vprintmsg(lvl, ctx.file, ctx.line, "warning", fmt, ap);
163 /**********************************************************************
164 * some maths used for constant folding
167 vector vec3_add(vector a, vector b)
176 vector vec3_sub(vector a, vector b)
185 qcfloat vec3_mulvv(vector a, vector b)
187 return (a.x * b.x + a.y * b.y + a.z * b.z);
190 vector vec3_mulvf(vector a, float b)
199 /**********************************************************************
203 bool parser_next(parser_t *parser)
205 /* lex_do kills the previous token */
206 parser->tok = lex_do(parser->lex);
207 if (parser->tok == TOKEN_EOF)
209 if (parser->tok >= TOKEN_ERROR) {
210 parseerror(parser, "lex error");
216 #define parser_tokval(p) ((p)->lex->tok.value)
217 #define parser_token(p) (&((p)->lex->tok))
218 #define parser_ctx(p) ((p)->lex->tok.ctx)
220 static ast_value* parser_const_float(parser_t *parser, double d)
224 for (i = 0; i < vec_size(parser->imm_float); ++i) {
225 const double compare = parser->imm_float[i]->constval.vfloat;
226 if (memcmp((const void*)&compare, (const void *)&d, sizeof(double)) == 0)
227 return parser->imm_float[i];
229 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_FLOAT);
231 out->hasvalue = true;
232 out->constval.vfloat = d;
233 vec_push(parser->imm_float, out);
237 static ast_value* parser_const_float_0(parser_t *parser)
239 if (!parser->imm_float_zero)
240 parser->imm_float_zero = parser_const_float(parser, 0);
241 return parser->imm_float_zero;
244 static ast_value* parser_const_float_1(parser_t *parser)
246 if (!parser->imm_float_one)
247 parser->imm_float_one = parser_const_float(parser, 1);
248 return parser->imm_float_one;
251 static char *parser_strdup(const char *str)
254 /* actually dup empty strings */
255 char *out = mem_a(1);
259 return util_strdup(str);
262 static ast_value* parser_const_string(parser_t *parser, const char *str, bool dotranslate)
266 for (i = 0; i < vec_size(parser->imm_string); ++i) {
267 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
268 return parser->imm_string[i];
272 snprintf(name, sizeof(name), "dotranslate_%lu", (unsigned long)(parser->translated++));
273 out = ast_value_new(parser_ctx(parser), name, TYPE_STRING);
275 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
277 out->hasvalue = true;
278 out->constval.vstring = parser_strdup(str);
279 vec_push(parser->imm_string, out);
283 static ast_value* parser_const_vector(parser_t *parser, vector v)
287 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
288 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
289 return parser->imm_vector[i];
291 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
293 out->hasvalue = true;
294 out->constval.vvec = v;
295 vec_push(parser->imm_vector, out);
299 static ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
305 return parser_const_vector(parser, v);
308 static ast_value* parser_const_vector_0(parser_t *parser)
310 if (!parser->imm_vector_zero)
311 parser->imm_vector_zero = parser_const_vector_f(parser, 0, 0, 0);
312 return parser->imm_vector_zero;
315 static ast_expression* parser_find_field(parser_t *parser, const char *name)
317 return util_htget(parser->htfields, name);
320 static ast_expression* parser_find_global(parser_t *parser, const char *name)
322 return util_htget(parser->htglobals, name);
325 static ast_expression* parser_find_param(parser_t *parser, const char *name)
329 if (!parser->function)
331 fun = parser->function->vtype;
332 for (i = 0; i < vec_size(fun->expression.params); ++i) {
333 if (!strcmp(fun->expression.params[i]->name, name))
334 return (ast_expression*)(fun->expression.params[i]);
339 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
344 hash = util_hthash(parser->htglobals, name);
347 for (i = vec_size(parser->variables); i > upto;) {
349 if ( (e = util_htgeth(parser->variables[i], name, hash)) )
353 return parser_find_param(parser, name);
356 static ast_expression* parser_find_var(parser_t *parser, const char *name)
360 v = parser_find_local(parser, name, 0, &dummy);
361 if (!v) v = parser_find_global(parser, name);
365 static ast_value* parser_find_typedef(parser_t *parser, const char *name, size_t upto)
369 hash = util_hthash(parser->typedefs[0], name);
371 for (i = vec_size(parser->typedefs); i > upto;) {
373 if ( (e = (ast_value*)util_htgeth(parser->typedefs[i], name, hash)) )
381 size_t etype; /* 0 = expression, others are operators */
385 ast_block *block; /* for commas and function calls */
394 #define SY_PAREN_EXPR '('
395 #define SY_PAREN_FUNC 'f'
396 #define SY_PAREN_INDEX '['
397 #define SY_PAREN_TERNARY '?'
399 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
410 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
414 e.out = (ast_expression*)v;
421 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
423 e.etype = 1 + (op - operators);
432 static sy_elem syparen(lex_ctx ctx, int p, size_t off) {
444 # define DEBUGSHUNTDO(x) x
446 # define DEBUGSHUNTDO(x)
449 /* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
450 * so we need to rotate it to become ent.(foo[n]).
452 static bool rotate_entfield_array_index_nodes(ast_expression **out)
454 ast_array_index *index;
455 ast_entfield *entfield;
459 ast_expression *entity;
461 lex_ctx ctx = ast_ctx(*out);
463 if (!ast_istype(*out, ast_array_index))
465 index = (ast_array_index*)*out;
467 if (!ast_istype(index->array, ast_entfield))
469 entfield = (ast_entfield*)index->array;
471 if (!ast_istype(entfield->field, ast_value))
473 field = (ast_value*)entfield->field;
476 entity = entfield->entity;
480 index = ast_array_index_new(ctx, (ast_expression*)field, sub);
481 entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
482 *out = (ast_expression*)entfield;
487 static bool parser_sy_pop(parser_t *parser, shunt *sy)
491 ast_expression *out = NULL;
492 ast_expression *exprs[3];
493 ast_block *blocks[3];
494 ast_value *asvalue[3];
495 ast_binstore *asbinstore;
496 size_t i, assignop, addop, subop;
497 qcint generated_op = 0;
502 if (!vec_size(sy->ops)) {
503 parseerror(parser, "internal error: missing operator");
507 if (vec_last(sy->ops).paren) {
508 parseerror(parser, "unmatched parenthesis");
512 op = &operators[vec_last(sy->ops).etype - 1];
513 ctx = vec_last(sy->ops).ctx;
515 DEBUGSHUNTDO(con_out("apply %s\n", op->op));
517 if (vec_size(sy->out) < op->operands) {
518 parseerror(parser, "internal error: not enough operands: %i (operator %s (%i))", vec_size(sy->out),
519 op->op, (int)op->id);
523 vec_shrinkby(sy->ops, 1);
525 /* op(:?) has no input and no output */
529 vec_shrinkby(sy->out, op->operands);
530 for (i = 0; i < op->operands; ++i) {
531 exprs[i] = sy->out[vec_size(sy->out)+i].out;
532 blocks[i] = sy->out[vec_size(sy->out)+i].block;
533 asvalue[i] = (ast_value*)exprs[i];
536 if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
537 parseerror(parser, "internal error: operator cannot be applied on empty blocks");
541 #define NotSameType(T) \
542 (exprs[0]->expression.vtype != exprs[1]->expression.vtype || \
543 exprs[0]->expression.vtype != T)
544 #define CanConstFold1(A) \
545 (ast_istype((A), ast_value) && ((ast_value*)(A))->hasvalue && (((ast_value*)(A))->cvq == CV_CONST))
546 #define CanConstFold(A, B) \
547 (CanConstFold1(A) && CanConstFold1(B))
548 #define ConstV(i) (asvalue[(i)]->constval.vvec)
549 #define ConstF(i) (asvalue[(i)]->constval.vfloat)
550 #define ConstS(i) (asvalue[(i)]->constval.vstring)
554 parseerror(parser, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
558 if (exprs[0]->expression.vtype == TYPE_ENTITY) {
559 if (exprs[1]->expression.vtype != TYPE_FIELD) {
560 parseerror(parser, "type error: right hand of member-operand should be an entity-field");
563 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
565 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
566 parseerror(parser, "internal error: vector access is not supposed to be handled at this point");
570 parseerror(parser, "type error: member-of operator on something that is not an entity or vector");
576 if (exprs[0]->expression.vtype != TYPE_ARRAY &&
577 !(exprs[0]->expression.vtype == TYPE_FIELD &&
578 exprs[0]->expression.next->expression.vtype == TYPE_ARRAY))
580 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
581 parseerror(parser, "cannot index value of type %s", ty1);
584 if (exprs[1]->expression.vtype != TYPE_FLOAT) {
585 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
586 parseerror(parser, "index must be of type float, not %s", ty1);
589 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
590 if (rotate_entfield_array_index_nodes(&out))
593 /* This is not broken in fteqcc anymore */
594 if (opts_standard != COMPILER_GMQCC) {
595 /* this error doesn't need to make us bail out */
596 (void)!parsewarning(parser, WARN_EXTENSIONS,
597 "accessing array-field members of an entity without parenthesis\n"
598 " -> this is an extension from -std=gmqcc");
606 ast_block_add_expr(blocks[0], exprs[1]);
608 blocks[0] = ast_block_new(ctx);
609 ast_block_add_expr(blocks[0], exprs[0]);
610 ast_block_add_expr(blocks[0], exprs[1]);
612 if (!ast_block_set_type(blocks[0], exprs[1]))
615 vec_push(sy->out, syblock(ctx, blocks[0]));
622 switch (exprs[0]->expression.vtype) {
624 if (CanConstFold1(exprs[0]))
625 out = (ast_expression*)parser_const_float(parser, -ConstF(0));
627 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
628 (ast_expression*)parser_const_float_0(parser),
632 if (CanConstFold1(exprs[0]))
633 out = (ast_expression*)parser_const_vector_f(parser,
634 -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
636 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
637 (ast_expression*)parser_const_vector_0(parser),
641 parseerror(parser, "invalid types used in expression: cannot negate type %s",
642 type_name[exprs[0]->expression.vtype]);
648 switch (exprs[0]->expression.vtype) {
650 if (CanConstFold1(exprs[0]))
651 out = (ast_expression*)parser_const_float(parser, !ConstF(0));
653 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
656 if (CanConstFold1(exprs[0]))
657 out = (ast_expression*)parser_const_float(parser,
658 (!ConstV(0).x && !ConstV(0).y && !ConstV(0).z));
660 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
663 if (CanConstFold1(exprs[0]))
664 out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
666 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
668 /* we don't constant-fold NOT for these types */
670 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
673 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
676 parseerror(parser, "invalid types used in expression: cannot logically negate type %s",
677 type_name[exprs[0]->expression.vtype]);
683 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
684 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
686 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
687 type_name[exprs[0]->expression.vtype],
688 type_name[exprs[1]->expression.vtype]);
691 switch (exprs[0]->expression.vtype) {
693 if (CanConstFold(exprs[0], exprs[1]))
695 out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
698 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
701 if (CanConstFold(exprs[0], exprs[1]))
702 out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
704 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
707 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
708 type_name[exprs[0]->expression.vtype],
709 type_name[exprs[1]->expression.vtype]);
714 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
715 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
717 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
718 type_name[exprs[1]->expression.vtype],
719 type_name[exprs[0]->expression.vtype]);
722 switch (exprs[0]->expression.vtype) {
724 if (CanConstFold(exprs[0], exprs[1]))
725 out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
727 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
730 if (CanConstFold(exprs[0], exprs[1]))
731 out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
733 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
736 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
737 type_name[exprs[1]->expression.vtype],
738 type_name[exprs[0]->expression.vtype]);
743 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
744 exprs[0]->expression.vtype != TYPE_VECTOR &&
745 exprs[0]->expression.vtype != TYPE_FLOAT &&
746 exprs[1]->expression.vtype != TYPE_VECTOR &&
747 exprs[1]->expression.vtype != TYPE_FLOAT)
749 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
750 type_name[exprs[1]->expression.vtype],
751 type_name[exprs[0]->expression.vtype]);
754 switch (exprs[0]->expression.vtype) {
756 if (exprs[1]->expression.vtype == TYPE_VECTOR)
758 if (CanConstFold(exprs[0], exprs[1]))
759 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
761 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
765 if (CanConstFold(exprs[0], exprs[1]))
766 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
768 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
772 if (exprs[1]->expression.vtype == TYPE_FLOAT)
774 if (CanConstFold(exprs[0], exprs[1]))
775 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
777 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
781 if (CanConstFold(exprs[0], exprs[1]))
782 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
784 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
788 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
789 type_name[exprs[1]->expression.vtype],
790 type_name[exprs[0]->expression.vtype]);
795 if (NotSameType(TYPE_FLOAT)) {
796 parseerror(parser, "invalid types used in expression: cannot divide types %s and %s",
797 type_name[exprs[0]->expression.vtype],
798 type_name[exprs[1]->expression.vtype]);
801 if (CanConstFold(exprs[0], exprs[1]))
802 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
804 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
808 parseerror(parser, "qc does not have a modulo operator");
812 if (NotSameType(TYPE_FLOAT)) {
813 parseerror(parser, "invalid types used in expression: cannot perform bit operations between types %s and %s",
814 type_name[exprs[0]->expression.vtype],
815 type_name[exprs[1]->expression.vtype]);
818 if (CanConstFold(exprs[0], exprs[1]))
819 out = (ast_expression*)parser_const_float(parser,
820 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
821 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
823 out = (ast_expression*)ast_binary_new(ctx,
824 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
828 parseerror(parser, "TODO: bitxor");
833 case opid3('<','<','='):
834 case opid3('>','>','='):
835 parseerror(parser, "TODO: shifts");
839 generated_op += 1; /* INSTR_OR */
841 generated_op += INSTR_AND;
843 if (NotSameType(TYPE_FLOAT)) {
844 parseerror(parser, "invalid types used in expression: cannot perform logical operations between types %s and %s",
845 type_name[exprs[0]->expression.vtype],
846 type_name[exprs[1]->expression.vtype]);
847 parseerror(parser, "TODO: logical ops for arbitrary types using INSTR_NOT");
848 parseerror(parser, "TODO: optional early out");
852 if (opts_standard == COMPILER_GMQCC)
853 con_out("TODO: early out logic\n");
854 if (CanConstFold(exprs[0], exprs[1]))
855 out = (ast_expression*)parser_const_float(parser,
856 (generated_op == INSTR_OR ? (ConstF(0) || ConstF(1)) : (ConstF(0) && ConstF(1))));
858 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
862 if (vec_last(parser->pot) != POT_TERNARY2) {
863 parseerror(parser, "mismatched parenthesis/ternary");
866 vec_pop(parser->pot);
867 if (exprs[1]->expression.vtype != exprs[2]->expression.vtype) {
868 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
869 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
870 parseerror(parser, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
873 if (CanConstFold1(exprs[0]))
874 out = (ConstF(0) ? exprs[1] : exprs[2]);
876 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
880 generated_op += 1; /* INSTR_GT */
882 generated_op += 1; /* INSTR_LT */
883 case opid2('>', '='):
884 generated_op += 1; /* INSTR_GE */
885 case opid2('<', '='):
886 generated_op += INSTR_LE;
887 if (NotSameType(TYPE_FLOAT)) {
888 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
889 type_name[exprs[0]->expression.vtype],
890 type_name[exprs[1]->expression.vtype]);
893 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
895 case opid2('!', '='):
896 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
897 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
898 type_name[exprs[0]->expression.vtype],
899 type_name[exprs[1]->expression.vtype]);
902 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
904 case opid2('=', '='):
905 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
906 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
907 type_name[exprs[0]->expression.vtype],
908 type_name[exprs[1]->expression.vtype]);
911 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
915 if (ast_istype(exprs[0], ast_entfield)) {
916 ast_expression *field = ((ast_entfield*)exprs[0])->field;
917 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
918 exprs[0]->expression.vtype == TYPE_FIELD &&
919 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
921 assignop = type_storep_instr[TYPE_VECTOR];
924 assignop = type_storep_instr[exprs[0]->expression.vtype];
925 if (!ast_compare_type(field->expression.next, exprs[1])) {
926 ast_type_to_string(field->expression.next, ty1, sizeof(ty1));
927 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
928 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
929 field->expression.next->expression.vtype == TYPE_FUNCTION &&
930 exprs[1]->expression.vtype == TYPE_FUNCTION)
932 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
933 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
939 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
944 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
945 exprs[0]->expression.vtype == TYPE_FIELD &&
946 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
948 assignop = type_store_instr[TYPE_VECTOR];
951 assignop = type_store_instr[exprs[0]->expression.vtype];
954 if (assignop == AINSTR_END) {
955 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
956 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
957 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
959 else if (!ast_compare_type(exprs[0], exprs[1])) {
960 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
961 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
962 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
963 exprs[0]->expression.vtype == TYPE_FUNCTION &&
964 exprs[1]->expression.vtype == TYPE_FUNCTION)
966 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
967 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
973 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
976 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
977 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
979 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
981 case opid3('+','+','P'):
982 case opid3('-','-','P'):
984 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
985 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
986 parseerror(parser, "invalid type for prefix increment: %s", ty1);
989 if (op->id == opid3('+','+','P'))
993 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
994 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
996 if (ast_istype(exprs[0], ast_entfield)) {
997 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
999 (ast_expression*)parser_const_float_1(parser));
1001 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1003 (ast_expression*)parser_const_float_1(parser));
1006 case opid3('S','+','+'):
1007 case opid3('S','-','-'):
1009 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1010 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1011 parseerror(parser, "invalid type for suffix increment: %s", ty1);
1014 if (op->id == opid3('S','+','+')) {
1015 addop = INSTR_ADD_F;
1016 subop = INSTR_SUB_F;
1018 addop = INSTR_SUB_F;
1019 subop = INSTR_ADD_F;
1021 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1022 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1024 if (ast_istype(exprs[0], ast_entfield)) {
1025 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1027 (ast_expression*)parser_const_float_1(parser));
1029 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1031 (ast_expression*)parser_const_float_1(parser));
1035 out = (ast_expression*)ast_binary_new(ctx, subop,
1037 (ast_expression*)parser_const_float_1(parser));
1039 case opid2('+','='):
1040 case opid2('-','='):
1041 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
1042 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
1044 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1045 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1046 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1050 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1051 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1053 if (ast_istype(exprs[0], ast_entfield))
1054 assignop = type_storep_instr[exprs[0]->expression.vtype];
1056 assignop = type_store_instr[exprs[0]->expression.vtype];
1057 switch (exprs[0]->expression.vtype) {
1059 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1060 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
1061 exprs[0], exprs[1]);
1064 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1065 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1066 exprs[0], exprs[1]);
1069 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1070 type_name[exprs[0]->expression.vtype],
1071 type_name[exprs[1]->expression.vtype]);
1075 case opid2('*','='):
1076 case opid2('/','='):
1077 if (exprs[1]->expression.vtype != TYPE_FLOAT ||
1078 !(exprs[0]->expression.vtype == TYPE_FLOAT ||
1079 exprs[0]->expression.vtype == TYPE_VECTOR))
1081 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1082 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1083 parseerror(parser, "invalid types used in expression: %s and %s",
1087 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1088 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1090 if (ast_istype(exprs[0], ast_entfield))
1091 assignop = type_storep_instr[exprs[0]->expression.vtype];
1093 assignop = type_store_instr[exprs[0]->expression.vtype];
1094 switch (exprs[0]->expression.vtype) {
1096 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1097 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1098 exprs[0], exprs[1]);
1101 if (op->id == opid2('*','=')) {
1102 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1103 exprs[0], exprs[1]);
1105 /* there's no DIV_VF */
1106 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
1107 (ast_expression*)parser_const_float_1(parser),
1111 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1116 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1117 type_name[exprs[0]->expression.vtype],
1118 type_name[exprs[1]->expression.vtype]);
1122 case opid2('&','='):
1123 case opid2('|','='):
1124 if (NotSameType(TYPE_FLOAT)) {
1125 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1126 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1127 parseerror(parser, "invalid types used in expression: %s and %s",
1131 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1132 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1134 if (ast_istype(exprs[0], ast_entfield))
1135 assignop = type_storep_instr[exprs[0]->expression.vtype];
1137 assignop = type_store_instr[exprs[0]->expression.vtype];
1138 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1139 (op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1140 exprs[0], exprs[1]);
1142 case opid3('&','~','='):
1143 /* This is like: a &= ~(b);
1144 * But QC has no bitwise-not, so we implement it as
1147 if (NotSameType(TYPE_FLOAT)) {
1148 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1149 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1150 parseerror(parser, "invalid types used in expression: %s and %s",
1154 if (ast_istype(exprs[0], ast_entfield))
1155 assignop = type_storep_instr[exprs[0]->expression.vtype];
1157 assignop = type_store_instr[exprs[0]->expression.vtype];
1158 out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1161 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1162 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1164 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1165 asbinstore->keep_dest = true;
1166 out = (ast_expression*)asbinstore;
1172 parseerror(parser, "failed to apply operand %s", op->op);
1176 DEBUGSHUNTDO(con_out("applied %s\n", op->op));
1177 vec_push(sy->out, syexp(ctx, out));
1181 static bool parser_close_call(parser_t *parser, shunt *sy)
1183 /* was a function call */
1184 ast_expression *fun;
1190 vec_shrinkby(sy->ops, 1);
1191 fid = sy->ops[vec_size(sy->ops)].off;
1193 /* out[fid] is the function
1194 * everything above is parameters...
1195 * 0 params = nothing
1196 * 1 params = ast_expression
1200 if (vec_size(sy->out) < 1 || vec_size(sy->out) <= fid) {
1201 parseerror(parser, "internal error: function call needs function and parameter list...");
1205 fun = sy->out[fid].out;
1207 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1209 parseerror(parser, "out of memory");
1213 if (fid+1 == vec_size(sy->out)) {
1216 } else if (fid+2 == vec_size(sy->out)) {
1218 vec_shrinkby(sy->out, 1);
1219 params = sy->out[vec_size(sy->out)].block;
1223 vec_push(call->params, sy->out[vec_size(sy->out)].out);
1225 paramcount = vec_size(params->exprs);
1226 call->params = params->exprs;
1227 params->exprs = NULL;
1230 if (!ast_call_check_types(call))
1233 parseerror(parser, "invalid function call");
1237 /* overwrite fid, the function, with a call */
1238 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1240 if (fun->expression.vtype != TYPE_FUNCTION) {
1241 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
1245 if (!fun->expression.next) {
1246 parseerror(parser, "could not determine function return type");
1249 if (vec_size(fun->expression.params) != paramcount &&
1250 !(fun->expression.variadic &&
1251 vec_size(fun->expression.params) < paramcount))
1254 const char *fewmany = (vec_size(fun->expression.params) > paramcount) ? "few" : "many";
1256 fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1257 if (opts_standard == COMPILER_GMQCC)
1260 parseerror(parser, "too %s parameters for call to %s: expected %i, got %i\n"
1261 " -> `%s` has been declared here: %s:%i",
1262 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1263 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1265 parseerror(parser, "too %s parameters for function call: expected %i, got %i\n"
1266 " -> `%s` has been declared here: %s:%i",
1267 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1268 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1274 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1275 "too %s parameters for call to %s: expected %i, got %i\n"
1276 " -> `%s` has been declared here: %s:%i",
1277 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1278 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1280 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1281 "too %s parameters for function call: expected %i, got %i\n"
1282 " -> `%s` has been declared here: %s:%i",
1283 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1284 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1292 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
1294 if (!vec_size(sy->ops)) {
1295 parseerror(parser, "unmatched closing paren");
1298 /* this would for bit a + (x) because there are no operators inside (x)
1299 if (sy->ops[vec_size(sy->ops)-1].paren == 1) {
1300 parseerror(parser, "empty parenthesis expression");
1304 while (vec_size(sy->ops)) {
1305 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_FUNC) {
1306 if (!parser_close_call(parser, sy))
1310 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_EXPR) {
1311 vec_shrinkby(sy->ops, 1);
1312 return !functions_only;
1314 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_INDEX) {
1317 /* pop off the parenthesis */
1318 vec_shrinkby(sy->ops, 1);
1319 /* then apply the index operator */
1320 if (!parser_sy_pop(parser, sy))
1324 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_TERNARY) {
1327 if (vec_last(parser->pot) != POT_TERNARY1) {
1328 parseerror(parser, "mismatched colon in ternary expression (missing closing paren?)");
1331 vec_last(parser->pot) = POT_TERNARY2;
1332 /* pop off the parenthesis */
1333 vec_shrinkby(sy->ops, 1);
1336 if (!parser_sy_pop(parser, sy))
1342 static void parser_reclassify_token(parser_t *parser)
1345 for (i = 0; i < operator_count; ++i) {
1346 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1347 parser->tok = TOKEN_OPERATOR;
1353 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma)
1355 ast_expression *expr = NULL;
1357 bool wantop = false;
1358 bool gotmemberof = false;
1360 /* count the parens because an if starts with one, so the
1361 * end of a condition is an unmatched closing paren
1369 parser->lex->flags.noops = false;
1371 parser_reclassify_token(parser);
1376 gotmemberof = false;
1378 parser->memberof = 0;
1380 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1381 parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "_"))
1383 /* a translatable string */
1387 parseerror(parser, "expected operator or end of statement, got constant");
1391 parser->lex->flags.noops = true;
1392 if (!parser_next(parser) || parser->tok != '(') {
1393 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1396 parser->lex->flags.noops = false;
1397 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1398 parseerror(parser, "expected a constant string in translatable-string extension");
1401 val = parser_const_string(parser, parser_tokval(parser), true);
1405 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1406 DEBUGSHUNTDO(con_out("push string\n"));
1408 if (!parser_next(parser) || parser->tok != ')') {
1409 parseerror(parser, "expected closing paren after translatable string");
1413 else if (parser->tok == TOKEN_IDENT)
1415 ast_expression *var;
1417 parseerror(parser, "expected operator or end of statement");
1422 if (opts_standard == COMPILER_GMQCC)
1424 if (parser->memberof == TYPE_ENTITY) {
1425 /* still get vars first since there could be a fieldpointer */
1426 var = parser_find_var(parser, parser_tokval(parser));
1428 var = parser_find_field(parser, parser_tokval(parser));
1430 else if (parser->memberof == TYPE_VECTOR)
1432 parseerror(parser, "TODO: implement effective vector member access");
1435 else if (parser->memberof) {
1436 parseerror(parser, "namespace for member not found");
1440 var = parser_find_var(parser, parser_tokval(parser));
1442 var = parser_find_var(parser, parser_tokval(parser));
1444 var = parser_find_field(parser, parser_tokval(parser));
1447 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1450 if (ast_istype(var, ast_value)) {
1451 ((ast_value*)var)->uses++;
1453 else if (ast_istype(var, ast_member)) {
1454 ast_member *mem = (ast_member*)var;
1455 if (ast_istype(mem->owner, ast_value))
1456 ((ast_value*)(mem->owner))->uses++;
1458 vec_push(sy.out, syexp(parser_ctx(parser), var));
1459 DEBUGSHUNTDO(con_out("push %s\n", parser_tokval(parser)));
1461 else if (parser->tok == TOKEN_FLOATCONST) {
1464 parseerror(parser, "expected operator or end of statement, got constant");
1468 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1471 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1472 DEBUGSHUNTDO(con_out("push %g\n", parser_token(parser)->constval.f));
1474 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1477 parseerror(parser, "expected operator or end of statement, got constant");
1481 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1484 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1485 DEBUGSHUNTDO(con_out("push %i\n", parser_token(parser)->constval.i));
1487 else if (parser->tok == TOKEN_STRINGCONST) {
1490 parseerror(parser, "expected operator or end of statement, got constant");
1494 val = parser_const_string(parser, parser_tokval(parser), false);
1497 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1498 DEBUGSHUNTDO(con_out("push string\n"));
1500 else if (parser->tok == TOKEN_VECTORCONST) {
1503 parseerror(parser, "expected operator or end of statement, got constant");
1507 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1510 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1511 DEBUGSHUNTDO(con_out("push '%g %g %g'\n",
1512 parser_token(parser)->constval.v.x,
1513 parser_token(parser)->constval.v.y,
1514 parser_token(parser)->constval.v.z));
1516 else if (parser->tok == '(') {
1517 parseerror(parser, "internal error: '(' should be classified as operator");
1520 else if (parser->tok == '[') {
1521 parseerror(parser, "internal error: '[' should be classified as operator");
1524 else if (parser->tok == ')') {
1526 DEBUGSHUNTDO(con_out("do[op] )\n"));
1530 /* we do expect an operator next */
1531 /* closing an opening paren */
1532 if (!parser_close_paren(parser, &sy, false))
1534 if (vec_last(parser->pot) != POT_PAREN) {
1535 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1538 vec_pop(parser->pot);
1540 DEBUGSHUNTDO(con_out("do[nop] )\n"));
1544 /* allowed for function calls */
1545 if (!parser_close_paren(parser, &sy, true))
1547 if (vec_last(parser->pot) != POT_PAREN) {
1548 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1551 vec_pop(parser->pot);
1555 else if (parser->tok == ']') {
1557 parseerror(parser, "operand expected");
1561 if (!parser_close_paren(parser, &sy, false))
1563 if (vec_last(parser->pot) != POT_PAREN) {
1564 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1567 vec_pop(parser->pot);
1570 else if (parser->tok != TOKEN_OPERATOR) {
1572 parseerror(parser, "expected operator or end of statement");
1579 /* classify the operator */
1580 const oper_info *op;
1581 const oper_info *olast = NULL;
1583 for (o = 0; o < operator_count; ++o) {
1584 if ((!(operators[o].flags & OP_PREFIX) == wantop) &&
1585 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1586 !strcmp(parser_tokval(parser), operators[o].op))
1591 if (o == operator_count) {
1592 /* no operator found... must be the end of the statement */
1595 /* found an operator */
1598 /* when declaring variables, a comma starts a new variable */
1599 if (op->id == opid1(',') && !parens && stopatcomma) {
1600 /* fixup the token */
1605 /* a colon without a pervious question mark cannot be a ternary */
1606 if (!ternaries && op->id == opid2(':','?')) {
1611 if (op->id == opid1(',')) {
1612 if (vec_size(parser->pot) && vec_last(parser->pot) == POT_TERNARY2) {
1613 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
1617 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1618 olast = &operators[vec_last(sy.ops).etype-1];
1621 (op->prec < olast->prec) ||
1622 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1624 if (!parser_sy_pop(parser, &sy))
1626 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1627 olast = &operators[vec_last(sy.ops).etype-1];
1632 if (op->id == opid1('.') && opts_standard == COMPILER_GMQCC) {
1633 /* for gmqcc standard: open up the namespace of the previous type */
1634 ast_expression *prevex = vec_last(sy.out).out;
1636 parseerror(parser, "unexpected member operator");
1639 if (prevex->expression.vtype == TYPE_ENTITY)
1640 parser->memberof = TYPE_ENTITY;
1641 else if (prevex->expression.vtype == TYPE_VECTOR)
1642 parser->memberof = TYPE_VECTOR;
1644 parseerror(parser, "type error: type has no members");
1650 if (op->id == opid1('(')) {
1652 size_t sycount = vec_size(sy.out);
1653 DEBUGSHUNTDO(con_out("push [op] (\n"));
1654 ++parens; vec_push(parser->pot, POT_PAREN);
1655 /* we expected an operator, this is the function-call operator */
1656 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_FUNC, sycount-1));
1658 ++parens; vec_push(parser->pot, POT_PAREN);
1659 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_EXPR, 0));
1660 DEBUGSHUNTDO(con_out("push [nop] (\n"));
1663 } else if (op->id == opid1('[')) {
1665 parseerror(parser, "unexpected array subscript");
1668 ++parens; vec_push(parser->pot, POT_PAREN);
1669 /* push both the operator and the paren, this makes life easier */
1670 vec_push(sy.ops, syop(parser_ctx(parser), op));
1671 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_INDEX, 0));
1673 } else if (op->id == opid2('?',':')) {
1675 vec_push(sy.ops, syop(parser_ctx(parser), op));
1676 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_TERNARY, 0));
1679 vec_push(parser->pot, POT_TERNARY1);
1680 } else if (op->id == opid2(':','?')) {
1681 if (!vec_size(parser->pot)) {
1682 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1685 if (vec_last(parser->pot) != POT_TERNARY1) {
1686 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1689 if (!parser_close_paren(parser, &sy, false))
1691 vec_push(sy.ops, syop(parser_ctx(parser), op));
1695 DEBUGSHUNTDO(con_out("push operator %s\n", op->op));
1696 vec_push(sy.ops, syop(parser_ctx(parser), op));
1697 wantop = !!(op->flags & OP_SUFFIX);
1700 if (!parser_next(parser)) {
1703 if (parser->tok == ';' ||
1704 (!parens && parser->tok == ']'))
1710 while (vec_size(sy.ops)) {
1711 if (!parser_sy_pop(parser, &sy))
1715 parser->lex->flags.noops = true;
1716 if (!vec_size(sy.out)) {
1717 parseerror(parser, "empty expression");
1720 expr = sy.out[0].out;
1723 DEBUGSHUNTDO(con_out("shunt done\n"));
1724 if (vec_size(parser->pot)) {
1725 parseerror(parser, "internal error: vec_size(parser->pot) = %lu", (unsigned long)vec_size(parser->pot));
1728 vec_free(parser->pot);
1732 parser->lex->flags.noops = true;
1738 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma)
1740 ast_expression *e = parse_expression_leave(parser, stopatcomma);
1743 if (!parser_next(parser)) {
1750 static void parser_enterblock(parser_t *parser)
1752 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
1753 vec_push(parser->_blocklocals, vec_size(parser->_locals));
1754 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
1755 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
1756 vec_push(parser->_block_ctx, parser_ctx(parser));
1759 static bool parser_leaveblock(parser_t *parser)
1762 size_t locals, typedefs;
1764 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
1765 parseerror(parser, "internal error: parser_leaveblock with no block");
1769 util_htdel(vec_last(parser->variables));
1770 vec_pop(parser->variables);
1771 if (!vec_size(parser->_blocklocals)) {
1772 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
1776 locals = vec_last(parser->_blocklocals);
1777 vec_pop(parser->_blocklocals);
1778 while (vec_size(parser->_locals) != locals) {
1779 ast_expression *e = vec_last(parser->_locals);
1780 ast_value *v = (ast_value*)e;
1781 vec_pop(parser->_locals);
1782 if (ast_istype(e, ast_value) && !v->uses) {
1783 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name)) {
1790 typedefs = vec_last(parser->_blocktypedefs);
1791 while (vec_size(parser->_typedefs) != typedefs) {
1792 ast_delete(vec_last(parser->_typedefs));
1793 vec_pop(parser->_typedefs);
1795 util_htdel(vec_last(parser->typedefs));
1796 vec_pop(parser->typedefs);
1798 vec_pop(parser->_block_ctx);
1802 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
1804 vec_push(parser->_locals, e);
1805 util_htset(vec_last(parser->variables), name, (void*)e);
1808 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
1811 ast_expression *cond, *ontrue, *onfalse = NULL;
1814 lex_ctx ctx = parser_ctx(parser);
1816 (void)block; /* not touching */
1818 /* skip the 'if', parse an optional 'not' and check for an opening paren */
1819 if (!parser_next(parser)) {
1820 parseerror(parser, "expected condition or 'not'");
1823 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
1825 if (!parser_next(parser)) {
1826 parseerror(parser, "expected condition in parenthesis");
1830 if (parser->tok != '(') {
1831 parseerror(parser, "expected 'if' condition in parenthesis");
1834 /* parse into the expression */
1835 if (!parser_next(parser)) {
1836 parseerror(parser, "expected 'if' condition after opening paren");
1839 /* parse the condition */
1840 cond = parse_expression_leave(parser, false);
1844 if (parser->tok != ')') {
1845 parseerror(parser, "expected closing paren after 'if' condition");
1849 /* parse into the 'then' branch */
1850 if (!parser_next(parser)) {
1851 parseerror(parser, "expected statement for on-true branch of 'if'");
1855 if (!parse_statement_or_block(parser, &ontrue)) {
1859 /* check for an else */
1860 if (!strcmp(parser_tokval(parser), "else")) {
1861 /* parse into the 'else' branch */
1862 if (!parser_next(parser)) {
1863 parseerror(parser, "expected on-false branch after 'else'");
1868 if (!parse_statement_or_block(parser, &onfalse)) {
1876 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
1878 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
1879 *out = (ast_expression*)ifthen;
1883 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
1886 ast_expression *cond, *ontrue;
1888 lex_ctx ctx = parser_ctx(parser);
1890 (void)block; /* not touching */
1892 /* skip the 'while' and check for opening paren */
1893 if (!parser_next(parser) || parser->tok != '(') {
1894 parseerror(parser, "expected 'while' condition in parenthesis");
1897 /* parse into the expression */
1898 if (!parser_next(parser)) {
1899 parseerror(parser, "expected 'while' condition after opening paren");
1902 /* parse the condition */
1903 cond = parse_expression_leave(parser, false);
1907 if (parser->tok != ')') {
1908 parseerror(parser, "expected closing paren after 'while' condition");
1912 /* parse into the 'then' branch */
1913 if (!parser_next(parser)) {
1914 parseerror(parser, "expected while-loop body");
1918 if (!parse_statement_or_block(parser, &ontrue)) {
1923 aloop = ast_loop_new(ctx, NULL, cond, NULL, NULL, ontrue);
1924 *out = (ast_expression*)aloop;
1928 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
1931 ast_expression *cond, *ontrue;
1933 lex_ctx ctx = parser_ctx(parser);
1935 (void)block; /* not touching */
1937 /* skip the 'do' and get the body */
1938 if (!parser_next(parser)) {
1939 parseerror(parser, "expected loop body");
1942 if (!parse_statement_or_block(parser, &ontrue))
1945 /* expect the "while" */
1946 if (parser->tok != TOKEN_KEYWORD ||
1947 strcmp(parser_tokval(parser), "while"))
1949 parseerror(parser, "expected 'while' and condition");
1954 /* skip the 'while' and check for opening paren */
1955 if (!parser_next(parser) || parser->tok != '(') {
1956 parseerror(parser, "expected 'while' condition in parenthesis");
1960 /* parse into the expression */
1961 if (!parser_next(parser)) {
1962 parseerror(parser, "expected 'while' condition after opening paren");
1966 /* parse the condition */
1967 cond = parse_expression_leave(parser, false);
1971 if (parser->tok != ')') {
1972 parseerror(parser, "expected closing paren after 'while' condition");
1978 if (!parser_next(parser) || parser->tok != ';') {
1979 parseerror(parser, "expected semicolon after condition");
1985 if (!parser_next(parser)) {
1986 parseerror(parser, "parse error");
1992 aloop = ast_loop_new(ctx, NULL, NULL, cond, NULL, ontrue);
1993 *out = (ast_expression*)aloop;
1997 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2000 ast_expression *initexpr, *cond, *increment, *ontrue;
2004 lex_ctx ctx = parser_ctx(parser);
2006 parser_enterblock(parser);
2013 /* skip the 'while' and check for opening paren */
2014 if (!parser_next(parser) || parser->tok != '(') {
2015 parseerror(parser, "expected 'for' expressions in parenthesis");
2018 /* parse into the expression */
2019 if (!parser_next(parser)) {
2020 parseerror(parser, "expected 'for' initializer after opening paren");
2025 if (parser->tok == TOKEN_IDENT)
2026 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2028 if (typevar || parser->tok == TOKEN_TYPENAME) {
2029 if (opts_standard != COMPILER_GMQCC) {
2030 if (parsewarning(parser, WARN_EXTENSIONS,
2031 "current standard does not allow variable declarations in for-loop initializers"))
2034 if (!parse_variable(parser, block, true, CV_VAR, typevar, false))
2037 else if (parser->tok != ';')
2039 initexpr = parse_expression_leave(parser, false);
2044 /* move on to condition */
2045 if (parser->tok != ';') {
2046 parseerror(parser, "expected semicolon after for-loop initializer");
2049 if (!parser_next(parser)) {
2050 parseerror(parser, "expected for-loop condition");
2054 /* parse the condition */
2055 if (parser->tok != ';') {
2056 cond = parse_expression_leave(parser, false);
2061 /* move on to incrementor */
2062 if (parser->tok != ';') {
2063 parseerror(parser, "expected semicolon after for-loop initializer");
2066 if (!parser_next(parser)) {
2067 parseerror(parser, "expected for-loop condition");
2071 /* parse the incrementor */
2072 if (parser->tok != ')') {
2073 increment = parse_expression_leave(parser, false);
2076 if (!ast_side_effects(increment)) {
2077 if (genwarning(ast_ctx(increment), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2083 if (parser->tok != ')') {
2084 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2087 /* parse into the 'then' branch */
2088 if (!parser_next(parser)) {
2089 parseerror(parser, "expected for-loop body");
2092 if (!parse_statement_or_block(parser, &ontrue))
2095 aloop = ast_loop_new(ctx, initexpr, cond, NULL, increment, ontrue);
2096 *out = (ast_expression*)aloop;
2098 if (!parser_leaveblock(parser))
2102 if (initexpr) ast_delete(initexpr);
2103 if (cond) ast_delete(cond);
2104 if (increment) ast_delete(increment);
2105 (void)!parser_leaveblock(parser);
2109 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2111 ast_expression *exp = NULL;
2112 ast_return *ret = NULL;
2113 ast_value *expected = parser->function->vtype;
2115 lex_ctx ctx = parser_ctx(parser);
2117 (void)block; /* not touching */
2119 if (!parser_next(parser)) {
2120 parseerror(parser, "expected return expression");
2124 if (parser->tok != ';') {
2125 exp = parse_expression(parser, false);
2129 if (exp->expression.vtype != expected->expression.next->expression.vtype) {
2130 parseerror(parser, "return with invalid expression");
2133 ret = ast_return_new(exp->expression.node.context, exp);
2139 if (!parser_next(parser))
2140 parseerror(parser, "parse error");
2141 if (expected->expression.next->expression.vtype != TYPE_VOID) {
2142 if (opts_standard != COMPILER_GMQCC)
2143 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2145 parseerror(parser, "return without value");
2147 ret = ast_return_new(ctx, NULL);
2149 *out = (ast_expression*)ret;
2153 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2155 lex_ctx ctx = parser_ctx(parser);
2157 (void)block; /* not touching */
2159 if (!parser_next(parser) || parser->tok != ';') {
2160 parseerror(parser, "expected semicolon");
2164 if (!parser_next(parser))
2165 parseerror(parser, "parse error");
2167 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue);
2171 /* returns true when it was a variable qualifier, false otherwise!
2172 * on error, cvq is set to CV_WRONG
2174 static bool parse_var_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref)
2176 bool had_const = false;
2177 bool had_var = false;
2178 bool had_noref = false;
2181 if (!strcmp(parser_tokval(parser), "const"))
2183 else if (!strcmp(parser_tokval(parser), "var"))
2185 else if (with_local && !strcmp(parser_tokval(parser), "local"))
2187 else if (!strcmp(parser_tokval(parser), "noref"))
2189 else if (!had_const && !had_var && !had_noref) {
2194 if (!parser_next(parser))
2206 parseerror(parser, "parse error after variable qualifier");
2211 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
2213 ast_expression *operand;
2216 ast_switch *switchnode;
2217 ast_switch_case swcase;
2222 lex_ctx ctx = parser_ctx(parser);
2224 (void)block; /* not touching */
2227 /* parse over the opening paren */
2228 if (!parser_next(parser) || parser->tok != '(') {
2229 parseerror(parser, "expected switch operand in parenthesis");
2233 /* parse into the expression */
2234 if (!parser_next(parser)) {
2235 parseerror(parser, "expected switch operand");
2238 /* parse the operand */
2239 operand = parse_expression_leave(parser, false);
2243 switchnode = ast_switch_new(ctx, operand);
2246 if (parser->tok != ')') {
2247 ast_delete(switchnode);
2248 parseerror(parser, "expected closing paren after 'switch' operand");
2252 /* parse over the opening paren */
2253 if (!parser_next(parser) || parser->tok != '{') {
2254 ast_delete(switchnode);
2255 parseerror(parser, "expected list of cases");
2259 if (!parser_next(parser)) {
2260 ast_delete(switchnode);
2261 parseerror(parser, "expected 'case' or 'default'");
2265 /* new block; allow some variables to be declared here */
2266 parser_enterblock(parser);
2269 if (parser->tok == TOKEN_IDENT)
2270 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2271 if (typevar || parser->tok == TOKEN_TYPENAME) {
2272 if (!parse_variable(parser, block, false, CV_NONE, typevar, false)) {
2273 ast_delete(switchnode);
2278 if (parse_var_qualifiers(parser, true, &cvq, &noref))
2280 if (cvq == CV_WRONG) {
2281 ast_delete(switchnode);
2284 if (!parse_variable(parser, block, false, cvq, NULL, noref)) {
2285 ast_delete(switchnode);
2294 while (parser->tok != '}') {
2295 ast_block *caseblock;
2297 if (parser->tok != TOKEN_KEYWORD) {
2298 ast_delete(switchnode);
2299 parseerror(parser, "expected 'case' or 'default'");
2302 if (!strcmp(parser_tokval(parser), "case")) {
2303 if (!parser_next(parser)) {
2304 ast_delete(switchnode);
2305 parseerror(parser, "expected expression for case");
2308 swcase.value = parse_expression_leave(parser, false);
2309 if (!swcase.value) {
2310 ast_delete(switchnode);
2311 parseerror(parser, "expected expression for case");
2314 if (!OPTS_FLAG(RELAXED_SWITCH)) {
2315 opval = (ast_value*)swcase.value;
2316 if (!ast_istype(swcase.value, ast_value)) { /* || opval->cvq != CV_CONST) { */
2317 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
2323 else if (!strcmp(parser_tokval(parser), "default")) {
2324 swcase.value = NULL;
2325 if (!parser_next(parser)) {
2326 ast_delete(switchnode);
2327 parseerror(parser, "expected colon");
2332 /* Now the colon and body */
2333 if (parser->tok != ':') {
2334 if (swcase.value) ast_unref(swcase.value);
2335 ast_delete(switchnode);
2336 parseerror(parser, "expected colon");
2340 if (!parser_next(parser)) {
2341 if (swcase.value) ast_unref(swcase.value);
2342 ast_delete(switchnode);
2343 parseerror(parser, "expected statements or case");
2346 caseblock = ast_block_new(parser_ctx(parser));
2348 if (swcase.value) ast_unref(swcase.value);
2349 ast_delete(switchnode);
2352 swcase.code = (ast_expression*)caseblock;
2353 vec_push(switchnode->cases, swcase);
2355 ast_expression *expr;
2356 if (parser->tok == '}')
2358 if (parser->tok == TOKEN_KEYWORD) {
2359 if (!strcmp(parser_tokval(parser), "case") ||
2360 !strcmp(parser_tokval(parser), "default"))
2365 if (!parse_statement(parser, caseblock, &expr, true)) {
2366 ast_delete(switchnode);
2371 ast_block_add_expr(caseblock, expr);
2375 parser_leaveblock(parser);
2378 if (parser->tok != '}') {
2379 ast_delete(switchnode);
2380 parseerror(parser, "expected closing paren of case list");
2383 if (!parser_next(parser)) {
2384 ast_delete(switchnode);
2385 parseerror(parser, "parse error after switch");
2388 *out = (ast_expression*)switchnode;
2392 static bool parse_goto(parser_t *parser, ast_expression **out)
2397 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2398 parseerror(parser, "expected label name after `goto`");
2402 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
2404 for (i = 0; i < vec_size(parser->labels); ++i) {
2405 if (!strcmp(parser->labels[i]->name, parser_tokval(parser))) {
2406 ast_goto_set_label(gt, parser->labels[i]);
2410 if (i == vec_size(parser->labels))
2411 vec_push(parser->gotos, gt);
2413 if (!parser_next(parser) || parser->tok != ';') {
2414 parseerror(parser, "semicolon expected after goto label");
2417 if (!parser_next(parser)) {
2418 parseerror(parser, "parse error after goto");
2422 *out = (ast_expression*)gt;
2426 static bool parse_skipwhite(parser_t *parser)
2429 if (!parser_next(parser))
2431 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
2432 return parser->tok < TOKEN_ERROR;
2435 static bool parse_eol(parser_t *parser)
2437 if (!parse_skipwhite(parser))
2439 return parser->tok == TOKEN_EOL;
2442 static bool parse_pragma_do(parser_t *parser)
2444 if (!parser_next(parser) ||
2445 parser->tok != TOKEN_IDENT ||
2446 strcmp(parser_tokval(parser), "pragma"))
2448 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
2451 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
2452 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
2456 if (!strcmp(parser_tokval(parser), "noref")) {
2457 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
2458 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
2461 parser->noref = !!parser_token(parser)->constval.i;
2462 if (!parse_eol(parser)) {
2463 parseerror(parser, "parse error after `noref` pragma");
2469 parseerror(parser, "unrecognized hash-keyword: `%s`", parser_tokval(parser));
2476 static bool parse_pragma(parser_t *parser)
2479 parser->lex->flags.preprocessing = true;
2480 parser->lex->flags.mergelines = true;
2481 rv = parse_pragma_do(parser);
2482 if (parser->tok != TOKEN_EOL) {
2483 parseerror(parser, "junk after pragma");
2486 parser->lex->flags.preprocessing = false;
2487 parser->lex->flags.mergelines = false;
2488 if (!parser_next(parser)) {
2489 parseerror(parser, "parse error after pragma");
2495 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
2499 ast_value *typevar = NULL;
2503 if (parser->tok == TOKEN_IDENT)
2504 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2506 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
2508 /* local variable */
2510 parseerror(parser, "cannot declare a variable from here");
2513 if (opts_standard == COMPILER_QCC) {
2514 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
2517 if (!parse_variable(parser, block, false, CV_NONE, typevar, false))
2521 else if (parse_var_qualifiers(parser, !!block, &cvq, &noref))
2523 if (cvq == CV_WRONG)
2525 return parse_variable(parser, block, true, cvq, NULL, noref);
2527 else if (parser->tok == TOKEN_KEYWORD)
2529 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
2534 if (!parser_next(parser)) {
2535 parseerror(parser, "parse error after __builtin_debug_printtype");
2539 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
2541 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
2542 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
2543 if (!parser_next(parser)) {
2544 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
2550 if (!parse_statement(parser, block, out, allow_cases))
2553 con_out("__builtin_debug_printtype: got no output node\n");
2556 ast_type_to_string(*out, ty, sizeof(ty));
2557 con_out("__builtin_debug_printtype: `%s`\n", ty);
2562 else if (!strcmp(parser_tokval(parser), "return"))
2564 return parse_return(parser, block, out);
2566 else if (!strcmp(parser_tokval(parser), "if"))
2568 return parse_if(parser, block, out);
2570 else if (!strcmp(parser_tokval(parser), "while"))
2572 return parse_while(parser, block, out);
2574 else if (!strcmp(parser_tokval(parser), "do"))
2576 return parse_dowhile(parser, block, out);
2578 else if (!strcmp(parser_tokval(parser), "for"))
2580 if (opts_standard == COMPILER_QCC) {
2581 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
2584 return parse_for(parser, block, out);
2586 else if (!strcmp(parser_tokval(parser), "break"))
2588 return parse_break_continue(parser, block, out, false);
2590 else if (!strcmp(parser_tokval(parser), "continue"))
2592 return parse_break_continue(parser, block, out, true);
2594 else if (!strcmp(parser_tokval(parser), "switch"))
2596 return parse_switch(parser, block, out);
2598 else if (!strcmp(parser_tokval(parser), "case") ||
2599 !strcmp(parser_tokval(parser), "default"))
2602 parseerror(parser, "unexpected 'case' label");
2607 else if (!strcmp(parser_tokval(parser), "goto"))
2609 return parse_goto(parser, out);
2611 else if (!strcmp(parser_tokval(parser), "typedef"))
2613 if (!parser_next(parser)) {
2614 parseerror(parser, "expected type definition after 'typedef'");
2617 return parse_typedef(parser);
2619 parseerror(parser, "Unexpected keyword");
2622 else if (parser->tok == '{')
2625 inner = parse_block(parser);
2628 *out = (ast_expression*)inner;
2631 else if (parser->tok == ':')
2635 if (!parser_next(parser)) {
2636 parseerror(parser, "expected label name");
2639 if (parser->tok != TOKEN_IDENT) {
2640 parseerror(parser, "label must be an identifier");
2643 label = ast_label_new(parser_ctx(parser), parser_tokval(parser));
2646 vec_push(parser->labels, label);
2647 *out = (ast_expression*)label;
2648 if (!parser_next(parser)) {
2649 parseerror(parser, "parse error after label");
2652 for (i = 0; i < vec_size(parser->gotos); ++i) {
2653 if (!strcmp(parser->gotos[i]->name, label->name)) {
2654 ast_goto_set_label(parser->gotos[i], label);
2655 vec_remove(parser->gotos, i, 1);
2661 else if (parser->tok == ';')
2663 if (!parser_next(parser)) {
2664 parseerror(parser, "parse error after empty statement");
2671 ast_expression *exp = parse_expression(parser, false);
2675 if (!ast_side_effects(exp)) {
2676 if (genwarning(ast_ctx(exp), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2683 static bool parse_block_into(parser_t *parser, ast_block *block)
2687 parser_enterblock(parser);
2689 if (!parser_next(parser)) { /* skip the '{' */
2690 parseerror(parser, "expected function body");
2694 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
2696 ast_expression *expr = NULL;
2697 if (parser->tok == '}')
2700 if (!parse_statement(parser, block, &expr, false)) {
2701 /* parseerror(parser, "parse error"); */
2707 ast_block_add_expr(block, expr);
2710 if (parser->tok != '}') {
2713 (void)parser_next(parser);
2717 if (!parser_leaveblock(parser))
2719 return retval && !!block;
2722 static ast_block* parse_block(parser_t *parser)
2725 block = ast_block_new(parser_ctx(parser));
2728 if (!parse_block_into(parser, block)) {
2729 ast_block_delete(block);
2735 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
2737 if (parser->tok == '{') {
2738 *out = (ast_expression*)parse_block(parser);
2741 return parse_statement(parser, NULL, out, false);
2744 static bool create_vector_members(ast_value *var, ast_member **me)
2747 size_t len = strlen(var->name);
2749 for (i = 0; i < 3; ++i) {
2750 char *name = mem_a(len+3);
2751 memcpy(name, var->name, len);
2753 name[len+1] = 'x'+i;
2755 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
2764 do { ast_member_delete(me[--i]); } while(i);
2768 static bool parse_function_body(parser_t *parser, ast_value *var)
2770 ast_block *block = NULL;
2775 ast_expression *framenum = NULL;
2776 ast_expression *nextthink = NULL;
2777 /* None of the following have to be deleted */
2778 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
2779 ast_expression *gbl_time = NULL, *gbl_self = NULL;
2780 bool has_frame_think;
2784 has_frame_think = false;
2785 old = parser->function;
2787 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
2788 parseerror(parser, "gotos/labels leaking");
2792 if (var->expression.variadic) {
2793 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
2794 "variadic function with implementation will not be able to access additional parameters"))
2800 if (parser->tok == '[') {
2801 /* got a frame definition: [ framenum, nextthink ]
2802 * this translates to:
2803 * self.frame = framenum;
2804 * self.nextthink = time + 0.1;
2805 * self.think = nextthink;
2809 fld_think = parser_find_field(parser, "think");
2810 fld_nextthink = parser_find_field(parser, "nextthink");
2811 fld_frame = parser_find_field(parser, "frame");
2812 if (!fld_think || !fld_nextthink || !fld_frame) {
2813 parseerror(parser, "cannot use [frame,think] notation without the required fields");
2814 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
2817 gbl_time = parser_find_global(parser, "time");
2818 gbl_self = parser_find_global(parser, "self");
2819 if (!gbl_time || !gbl_self) {
2820 parseerror(parser, "cannot use [frame,think] notation without the required globals");
2821 parseerror(parser, "please declare the following globals: `time`, `self`");
2825 if (!parser_next(parser))
2828 framenum = parse_expression_leave(parser, true);
2830 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
2833 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
2834 ast_unref(framenum);
2835 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
2839 if (parser->tok != ',') {
2840 ast_unref(framenum);
2841 parseerror(parser, "expected comma after frame number in [frame,think] notation");
2842 parseerror(parser, "Got a %i\n", parser->tok);
2846 if (!parser_next(parser)) {
2847 ast_unref(framenum);
2851 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
2853 /* qc allows the use of not-yet-declared functions here
2854 * - this automatically creates a prototype */
2855 ast_value *thinkfunc;
2856 ast_expression *functype = fld_think->expression.next;
2858 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
2859 if (!thinkfunc || !ast_type_adopt(thinkfunc, functype)) {
2860 ast_unref(framenum);
2861 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
2865 if (!parser_next(parser)) {
2866 ast_unref(framenum);
2867 ast_delete(thinkfunc);
2871 vec_push(parser->globals, (ast_expression*)thinkfunc);
2872 util_htset(parser->htglobals, thinkfunc->name, thinkfunc);
2873 nextthink = (ast_expression*)thinkfunc;
2876 nextthink = parse_expression_leave(parser, true);
2878 ast_unref(framenum);
2879 parseerror(parser, "expected a think-function in [frame,think] notation");
2884 if (!ast_istype(nextthink, ast_value)) {
2885 parseerror(parser, "think-function in [frame,think] notation must be a constant");
2889 if (retval && parser->tok != ']') {
2890 parseerror(parser, "expected closing `]` for [frame,think] notation");
2894 if (retval && !parser_next(parser)) {
2898 if (retval && parser->tok != '{') {
2899 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
2904 ast_unref(nextthink);
2905 ast_unref(framenum);
2909 has_frame_think = true;
2912 block = ast_block_new(parser_ctx(parser));
2914 parseerror(parser, "failed to allocate block");
2915 if (has_frame_think) {
2916 ast_unref(nextthink);
2917 ast_unref(framenum);
2922 if (has_frame_think) {
2924 ast_expression *self_frame;
2925 ast_expression *self_nextthink;
2926 ast_expression *self_think;
2927 ast_expression *time_plus_1;
2928 ast_store *store_frame;
2929 ast_store *store_nextthink;
2930 ast_store *store_think;
2932 ctx = parser_ctx(parser);
2933 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
2934 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
2935 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
2937 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
2938 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
2940 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
2941 if (self_frame) ast_delete(self_frame);
2942 if (self_nextthink) ast_delete(self_nextthink);
2943 if (self_think) ast_delete(self_think);
2944 if (time_plus_1) ast_delete(time_plus_1);
2950 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
2951 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
2952 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
2955 ast_delete(self_frame);
2958 if (!store_nextthink) {
2959 ast_delete(self_nextthink);
2963 ast_delete(self_think);
2967 if (store_frame) ast_delete(store_frame);
2968 if (store_nextthink) ast_delete(store_nextthink);
2969 if (store_think) ast_delete(store_think);
2972 ast_block_add_expr(block, (ast_expression*)store_frame);
2973 ast_block_add_expr(block, (ast_expression*)store_nextthink);
2974 ast_block_add_expr(block, (ast_expression*)store_think);
2978 parseerror(parser, "failed to generate code for [frame,think]");
2979 ast_unref(nextthink);
2980 ast_unref(framenum);
2986 parser_enterblock(parser);
2988 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
2990 ast_value *param = var->expression.params[parami];
2993 if (param->expression.vtype != TYPE_VECTOR &&
2994 (param->expression.vtype != TYPE_FIELD ||
2995 param->expression.next->expression.vtype != TYPE_VECTOR))
3000 if (!create_vector_members(param, me)) {
3001 ast_block_delete(block);
3005 for (e = 0; e < 3; ++e) {
3006 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
3007 ast_block_collect(block, (ast_expression*)me[e]);
3011 func = ast_function_new(ast_ctx(var), var->name, var);
3013 parseerror(parser, "failed to allocate function for `%s`", var->name);
3014 ast_block_delete(block);
3017 vec_push(parser->functions, func);
3019 parser->function = func;
3020 if (!parse_block_into(parser, block)) {
3021 ast_block_delete(block);
3025 vec_push(func->blocks, block);
3027 parser->function = old;
3028 if (!parser_leaveblock(parser))
3030 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
3031 parseerror(parser, "internal error: local scopes left");
3035 if (parser->tok == ';')
3036 return parser_next(parser);
3037 else if (opts_standard == COMPILER_QCC)
3038 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
3042 vec_pop(parser->functions);
3043 ast_function_delete(func);
3044 var->constval.vfunc = NULL;
3047 (void)!parser_leaveblock(parser);
3048 parser->function = old;
3052 static ast_expression *array_accessor_split(
3057 ast_expression *left,
3058 ast_expression *right
3064 lex_ctx ctx = ast_ctx(array);
3066 if (!left || !right) {
3067 if (left) ast_delete(left);
3068 if (right) ast_delete(right);
3072 cmp = ast_binary_new(ctx, INSTR_LT,
3073 (ast_expression*)index,
3074 (ast_expression*)parser_const_float(parser, middle));
3078 parseerror(parser, "internal error: failed to create comparison for array setter");
3082 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
3084 ast_delete(cmp); /* will delete left and right */
3085 parseerror(parser, "internal error: failed to create conditional jump for array setter");
3089 return (ast_expression*)ifthen;
3092 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
3094 lex_ctx ctx = ast_ctx(array);
3096 if (from+1 == afterend) {
3097 /* set this value */
3100 ast_array_index *subscript;
3102 int assignop = type_store_instr[value->expression.vtype];
3104 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3105 assignop = INSTR_STORE_V;
3107 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3111 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
3113 ast_delete(subscript);
3117 block = ast_block_new(ctx);
3123 ast_block_add_expr(block, (ast_expression*)st);
3125 ret = ast_return_new(ctx, NULL);
3131 ast_block_add_expr(block, (ast_expression*)ret);
3133 return (ast_expression*)block;
3135 ast_expression *left, *right;
3136 size_t diff = afterend - from;
3137 size_t middle = from + diff/2;
3138 left = array_setter_node(parser, array, index, value, from, middle);
3139 right = array_setter_node(parser, array, index, value, middle, afterend);
3140 return array_accessor_split(parser, array, index, middle, left, right);
3144 static ast_expression *array_field_setter_node(
3153 lex_ctx ctx = ast_ctx(array);
3155 if (from+1 == afterend) {
3156 /* set this value */
3159 ast_entfield *entfield;
3160 ast_array_index *subscript;
3162 int assignop = type_storep_instr[value->expression.vtype];
3164 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3165 assignop = INSTR_STOREP_V;
3167 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3171 entfield = ast_entfield_new_force(ctx,
3172 (ast_expression*)entity,
3173 (ast_expression*)subscript,
3174 (ast_expression*)subscript);
3176 ast_delete(subscript);
3180 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
3182 ast_delete(entfield);
3186 block = ast_block_new(ctx);
3192 ast_block_add_expr(block, (ast_expression*)st);
3194 ret = ast_return_new(ctx, NULL);
3200 ast_block_add_expr(block, (ast_expression*)ret);
3202 return (ast_expression*)block;
3204 ast_expression *left, *right;
3205 size_t diff = afterend - from;
3206 size_t middle = from + diff/2;
3207 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
3208 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
3209 return array_accessor_split(parser, array, index, middle, left, right);
3213 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
3215 lex_ctx ctx = ast_ctx(array);
3217 if (from+1 == afterend) {
3219 ast_array_index *subscript;
3221 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3225 ret = ast_return_new(ctx, (ast_expression*)subscript);
3227 ast_delete(subscript);
3231 return (ast_expression*)ret;
3233 ast_expression *left, *right;
3234 size_t diff = afterend - from;
3235 size_t middle = from + diff/2;
3236 left = array_getter_node(parser, array, index, from, middle);
3237 right = array_getter_node(parser, array, index, middle, afterend);
3238 return array_accessor_split(parser, array, index, middle, left, right);
3242 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
3244 ast_function *func = NULL;
3245 ast_value *fval = NULL;
3246 ast_block *body = NULL;
3248 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
3250 parseerror(parser, "failed to create accessor function value");
3254 func = ast_function_new(ast_ctx(array), funcname, fval);
3257 parseerror(parser, "failed to create accessor function node");
3261 body = ast_block_new(ast_ctx(array));
3263 parseerror(parser, "failed to create block for array accessor");
3269 vec_push(func->blocks, body);
3272 vec_push(parser->accessors, fval);
3277 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
3279 ast_expression *root = NULL;
3280 ast_value *index = NULL;
3281 ast_value *value = NULL;
3285 if (!ast_istype(array->expression.next, ast_value)) {
3286 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3290 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3292 func = fval->constval.vfunc;
3293 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
3295 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3296 value = ast_value_copy((ast_value*)array->expression.next);
3298 if (!index || !value) {
3299 parseerror(parser, "failed to create locals for array accessor");
3302 (void)!ast_value_set_name(value, "value"); /* not important */
3303 vec_push(fval->expression.params, index);
3304 vec_push(fval->expression.params, value);
3306 root = array_setter_node(parser, array, index, value, 0, array->expression.count);
3308 parseerror(parser, "failed to build accessor search tree");
3312 ast_block_add_expr(func->blocks[0], root);
3313 array->setter = fval;
3316 if (index) ast_delete(index);
3317 if (value) ast_delete(value);
3318 if (root) ast_delete(root);
3324 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
3326 ast_expression *root = NULL;
3327 ast_value *entity = NULL;
3328 ast_value *index = NULL;
3329 ast_value *value = NULL;
3333 if (!ast_istype(array->expression.next, ast_value)) {
3334 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3338 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3340 func = fval->constval.vfunc;
3341 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
3343 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
3344 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3345 value = ast_value_copy((ast_value*)array->expression.next);
3346 if (!entity || !index || !value) {
3347 parseerror(parser, "failed to create locals for array accessor");
3350 (void)!ast_value_set_name(value, "value"); /* not important */
3351 vec_push(fval->expression.params, entity);
3352 vec_push(fval->expression.params, index);
3353 vec_push(fval->expression.params, value);
3355 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
3357 parseerror(parser, "failed to build accessor search tree");
3361 ast_block_add_expr(func->blocks[0], root);
3362 array->setter = fval;
3365 if (entity) ast_delete(entity);
3366 if (index) ast_delete(index);
3367 if (value) ast_delete(value);
3368 if (root) ast_delete(root);
3374 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
3376 ast_expression *root = NULL;
3377 ast_value *index = NULL;
3381 /* NOTE: checking array->expression.next rather than elemtype since
3382 * for fields elemtype is a temporary fieldtype.
3384 if (!ast_istype(array->expression.next, ast_value)) {
3385 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3389 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3391 func = fval->constval.vfunc;
3392 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
3394 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3397 parseerror(parser, "failed to create locals for array accessor");
3400 vec_push(fval->expression.params, index);
3402 root = array_getter_node(parser, array, index, 0, array->expression.count);
3404 parseerror(parser, "failed to build accessor search tree");
3408 ast_block_add_expr(func->blocks[0], root);
3409 array->getter = fval;
3412 if (index) ast_delete(index);
3413 if (root) ast_delete(root);
3419 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
3420 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
3428 bool variadic = false;
3430 ctx = parser_ctx(parser);
3432 /* for the sake of less code we parse-in in this function */
3433 if (!parser_next(parser)) {
3434 parseerror(parser, "expected parameter list");
3440 /* parse variables until we hit a closing paren */
3441 while (parser->tok != ')') {
3443 /* there must be commas between them */
3444 if (parser->tok != ',') {
3445 parseerror(parser, "expected comma or end of parameter list");
3448 if (!parser_next(parser)) {
3449 parseerror(parser, "expected parameter");
3455 if (parser->tok == TOKEN_DOTS) {
3456 /* '...' indicates a varargs function */
3458 if (!parser_next(parser)) {
3459 parseerror(parser, "expected parameter");
3462 if (parser->tok != ')') {
3463 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
3469 /* for anything else just parse a typename */
3470 param = parse_typename(parser, NULL, NULL);
3473 vec_push(params, param);
3474 if (param->expression.vtype >= TYPE_VARIANT) {
3475 char typename[1024];
3476 ast_type_to_string((ast_expression*)param, typename, sizeof(typename));
3477 parseerror(parser, "type not supported as part of a parameter list: %s", typename);
3483 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
3487 if (vec_size(params) > 8 && opts_standard == COMPILER_QCC)
3488 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
3491 if (!parser_next(parser)) {
3492 parseerror(parser, "parse error after typename");
3496 /* now turn 'var' into a function type */
3497 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
3498 fval->expression.next = (ast_expression*)var;
3499 fval->expression.variadic = variadic;
3502 var->expression.params = params;
3509 for (i = 0; i < vec_size(params); ++i)
3510 ast_delete(params[i]);
3515 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
3517 ast_expression *cexp;
3518 ast_value *cval, *tmp;
3521 ctx = parser_ctx(parser);
3523 if (!parser_next(parser)) {
3525 parseerror(parser, "expected array-size");
3529 cexp = parse_expression_leave(parser, true);
3531 if (!cexp || !ast_istype(cexp, ast_value)) {
3535 parseerror(parser, "expected array-size as constant positive integer");
3538 cval = (ast_value*)cexp;
3540 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
3541 tmp->expression.next = (ast_expression*)var;
3544 if (cval->expression.vtype == TYPE_INTEGER)
3545 tmp->expression.count = cval->constval.vint;
3546 else if (cval->expression.vtype == TYPE_FLOAT)
3547 tmp->expression.count = cval->constval.vfloat;
3551 parseerror(parser, "array-size must be a positive integer constant");
3556 if (parser->tok != ']') {
3558 parseerror(parser, "expected ']' after array-size");
3561 if (!parser_next(parser)) {
3563 parseerror(parser, "error after parsing array size");
3569 /* Parse a complete typename.
3570 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
3571 * but when parsing variables separated by comma
3572 * 'storebase' should point to where the base-type should be kept.
3573 * The base type makes up every bit of type information which comes *before* the
3576 * The following will be parsed in its entirety:
3578 * The 'basetype' in this case is 'void()'
3579 * and if there's a comma after it, say:
3581 * then the type-information 'void()' can be stored in 'storebase'
3583 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
3585 ast_value *var, *tmp;
3588 const char *name = NULL;
3589 bool isfield = false;
3590 bool wasarray = false;
3591 size_t morefields = 0;
3593 ctx = parser_ctx(parser);
3595 /* types may start with a dot */
3596 if (parser->tok == '.') {
3598 /* if we parsed a dot we need a typename now */
3599 if (!parser_next(parser)) {
3600 parseerror(parser, "expected typename for field definition");
3604 /* Further dots are handled seperately because they won't be part of the
3607 while (parser->tok == '.') {
3609 if (!parser_next(parser)) {
3610 parseerror(parser, "expected typename for field definition");
3615 if (parser->tok == TOKEN_IDENT)
3616 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
3617 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
3618 parseerror(parser, "expected typename");
3622 /* generate the basic type value */
3623 if (cached_typedef) {
3624 var = ast_value_copy(cached_typedef);
3625 ast_value_set_name(var, "<type(from_def)>");
3627 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
3629 for (; morefields; --morefields) {
3630 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
3631 tmp->expression.next = (ast_expression*)var;
3635 /* do not yet turn into a field - remember:
3636 * .void() foo; is a field too
3637 * .void()() foo; is a function
3641 if (!parser_next(parser)) {
3643 parseerror(parser, "parse error after typename");
3647 /* an opening paren now starts the parameter-list of a function
3648 * this is where original-QC has parameter lists.
3649 * We allow a single parameter list here.
3650 * Much like fteqcc we don't allow `float()() x`
3652 if (parser->tok == '(') {
3653 var = parse_parameter_list(parser, var);
3658 /* store the base if requested */
3660 *storebase = ast_value_copy(var);
3662 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3663 tmp->expression.next = (ast_expression*)*storebase;
3668 /* there may be a name now */
3669 if (parser->tok == TOKEN_IDENT) {
3670 name = util_strdup(parser_tokval(parser));
3672 if (!parser_next(parser)) {
3674 parseerror(parser, "error after variable or field declaration");
3679 /* now this may be an array */
3680 if (parser->tok == '[') {
3682 var = parse_arraysize(parser, var);
3687 /* This is the point where we can turn it into a field */
3689 /* turn it into a field if desired */
3690 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3691 tmp->expression.next = (ast_expression*)var;
3695 /* now there may be function parens again */
3696 if (parser->tok == '(' && opts_standard == COMPILER_QCC)
3697 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3698 if (parser->tok == '(' && wasarray)
3699 parseerror(parser, "arrays as part of a return type is not supported");
3700 while (parser->tok == '(') {
3701 var = parse_parameter_list(parser, var);
3710 /* finally name it */
3712 if (!ast_value_set_name(var, name)) {
3714 parseerror(parser, "internal error: failed to set name");
3717 /* free the name, ast_value_set_name duplicates */
3724 static bool parse_typedef(parser_t *parser)
3726 ast_value *typevar, *oldtype;
3727 ast_expression *old;
3729 typevar = parse_typename(parser, NULL, NULL);
3734 if ( (old = parser_find_var(parser, typevar->name)) ) {
3735 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
3736 " -> `%s` has been declared here: %s:%i",
3737 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
3738 ast_delete(typevar);
3742 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
3743 parseerror(parser, "type `%s` has already been declared here: %s:%i",
3744 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
3745 ast_delete(typevar);
3749 vec_push(parser->_typedefs, typevar);
3750 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
3752 if (parser->tok != ';') {
3753 parseerror(parser, "expected semicolon after typedef");
3756 if (!parser_next(parser)) {
3757 parseerror(parser, "parse error after typedef");
3764 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref)
3768 ast_expression *old;
3772 ast_value *basetype = NULL;
3774 bool isparam = false;
3775 bool isvector = false;
3776 bool cleanvar = true;
3777 bool wasarray = false;
3781 /* get the first complete variable */
3782 var = parse_typename(parser, &basetype, cached_typedef);
3785 ast_delete(basetype);
3793 /* Part 0: finish the type */
3794 if (parser->tok == '(') {
3795 if (opts_standard == COMPILER_QCC)
3796 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3797 var = parse_parameter_list(parser, var);
3803 /* we only allow 1-dimensional arrays */
3804 if (parser->tok == '[') {
3806 var = parse_arraysize(parser, var);
3812 if (parser->tok == '(' && wasarray) {
3813 parseerror(parser, "arrays as part of a return type is not supported");
3814 /* we'll still parse the type completely for now */
3816 /* for functions returning functions */
3817 while (parser->tok == '(') {
3818 if (opts_standard == COMPILER_QCC)
3819 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3820 var = parse_parameter_list(parser, var);
3827 var->cvq = qualifier;
3828 /* in a noref section we simply bump the usecount */
3829 if (noref || parser->noref)
3833 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
3834 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
3835 * is then filled with the previous definition and the parameter-names replaced.
3838 /* Deal with end_sys_ vars */
3840 if (!strcmp(var->name, "end_sys_globals")) {
3842 parser->crc_globals = vec_size(parser->globals);
3845 else if (!strcmp(var->name, "end_sys_fields")) {
3847 parser->crc_fields = vec_size(parser->fields);
3850 if (was_end && var->expression.vtype == TYPE_FIELD) {
3851 if (parsewarning(parser, WARN_END_SYS_FIELDS,
3852 "global '%s' hint should not be a field",
3853 parser_tokval(parser)))
3860 if (!nofields && var->expression.vtype == TYPE_FIELD)
3862 /* deal with field declarations */
3863 old = parser_find_field(parser, var->name);
3865 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
3866 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
3875 parseerror(parser, "field `%s` already declared here: %s:%i",
3876 var->name, ast_ctx(old).file, ast_ctx(old).line);
3881 if (opts_standard == COMPILER_QCC &&
3882 (old = parser_find_global(parser, var->name)))
3884 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
3885 parseerror(parser, "field `%s` already declared here: %s:%i",
3886 var->name, ast_ctx(old).file, ast_ctx(old).line);
3893 /* deal with other globals */
3894 old = parser_find_global(parser, var->name);
3895 if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
3897 /* This is a function which had a prototype */
3898 if (!ast_istype(old, ast_value)) {
3899 parseerror(parser, "internal error: prototype is not an ast_value");
3903 proto = (ast_value*)old;
3904 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
3905 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
3907 ast_ctx(proto).file, ast_ctx(proto).line);
3911 /* we need the new parameter-names */
3912 for (i = 0; i < vec_size(proto->expression.params); ++i)
3913 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
3921 if (opts_standard == COMPILER_GMQCC) {
3922 parseerror(parser, "global `%s` already declared here: %s:%i",
3923 var->name, ast_ctx(old).file, ast_ctx(old).line);
3927 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
3928 "global `%s` already declared here: %s:%i",
3929 var->name, ast_ctx(old).file, ast_ctx(old).line))
3934 proto = (ast_value*)old;
3935 if (!ast_istype(old, ast_value)) {
3936 parseerror(parser, "internal error: not an ast_value");
3945 if (opts_standard == COMPILER_QCC &&
3946 (old = parser_find_field(parser, var->name)))
3948 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
3949 parseerror(parser, "global `%s` already declared here: %s:%i",
3950 var->name, ast_ctx(old).file, ast_ctx(old).line);
3957 else /* it's not a global */
3959 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
3960 if (old && !isparam) {
3961 parseerror(parser, "local `%s` already declared here: %s:%i",
3962 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
3966 old = parser_find_local(parser, var->name, 0, &isparam);
3967 if (old && isparam) {
3968 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
3969 "local `%s` is shadowing a parameter", var->name))
3971 parseerror(parser, "local `%s` already declared here: %s:%i",
3972 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
3976 if (opts_standard != COMPILER_GMQCC) {
3985 * Create the global/local, and deal with vector types.
3988 if (var->expression.vtype == TYPE_VECTOR)
3990 else if (var->expression.vtype == TYPE_FIELD &&
3991 var->expression.next->expression.vtype == TYPE_VECTOR)
3995 if (!create_vector_members(var, me)) {
4002 /* deal with global variables, fields, functions */
4003 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
4004 var->isfield = true;
4005 vec_push(parser->fields, (ast_expression*)var);
4006 util_htset(parser->htfields, var->name, var);
4008 for (i = 0; i < 3; ++i) {
4009 vec_push(parser->fields, (ast_expression*)me[i]);
4010 util_htset(parser->htfields, me[i]->name, me[i]);
4015 vec_push(parser->globals, (ast_expression*)var);
4016 util_htset(parser->htglobals, var->name, var);
4018 for (i = 0; i < 3; ++i) {
4019 vec_push(parser->globals, (ast_expression*)me[i]);
4020 util_htset(parser->htglobals, me[i]->name, me[i]);
4025 vec_push(localblock->locals, var);
4026 parser_addlocal(parser, var->name, (ast_expression*)var);
4028 for (i = 0; i < 3; ++i) {
4029 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
4030 ast_block_collect(localblock, (ast_expression*)me[i]);
4036 me[0] = me[1] = me[2] = NULL;
4041 if (var->expression.vtype == TYPE_ARRAY) {
4043 snprintf(name, sizeof(name), "%s##SET", var->name);
4044 if (!parser_create_array_setter(parser, var, name))
4046 snprintf(name, sizeof(name), "%s##GET", var->name);
4047 if (!parser_create_array_getter(parser, var, var->expression.next, name))
4050 else if (!localblock && !nofields &&
4051 var->expression.vtype == TYPE_FIELD &&
4052 var->expression.next->expression.vtype == TYPE_ARRAY)
4055 ast_expression *telem;
4057 ast_value *array = (ast_value*)var->expression.next;
4059 if (!ast_istype(var->expression.next, ast_value)) {
4060 parseerror(parser, "internal error: field element type must be an ast_value");
4064 snprintf(name, sizeof(name), "%s##SETF", var->name);
4065 if (!parser_create_array_field_setter(parser, array, name))
4068 telem = ast_type_copy(ast_ctx(var), array->expression.next);
4069 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
4070 tfield->expression.next = telem;
4071 snprintf(name, sizeof(name), "%s##GETFP", var->name);
4072 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
4080 if (parser->tok == ';') {
4081 ast_delete(basetype);
4082 if (!parser_next(parser)) {
4083 parseerror(parser, "error after variable declaration");
4089 if (parser->tok == ',')
4093 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
4096 parseerror(parser, "missing comma or semicolon while parsing variables");
4100 if (localblock && opts_standard == COMPILER_QCC) {
4101 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
4102 "initializing expression turns variable `%s` into a constant in this standard",
4109 if (parser->tok != '{') {
4110 if (parser->tok != '=') {
4111 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
4115 if (!parser_next(parser)) {
4116 parseerror(parser, "error parsing initializer");
4120 else if (opts_standard == COMPILER_QCC) {
4121 parseerror(parser, "expected '=' before function body in this standard");
4124 if (parser->tok == '#') {
4125 ast_function *func = NULL;
4128 parseerror(parser, "cannot declare builtins within functions");
4131 if (var->expression.vtype != TYPE_FUNCTION) {
4132 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
4135 if (!parser_next(parser)) {
4136 parseerror(parser, "expected builtin number");
4139 if (parser->tok != TOKEN_INTCONST) {
4140 parseerror(parser, "builtin number must be an integer constant");
4143 if (parser_token(parser)->constval.i < 0) {
4144 parseerror(parser, "builtin number must be an integer greater than zero");
4148 if (var->hasvalue) {
4149 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
4150 "builtin `%s` has already been defined\n"
4151 " -> previous declaration here: %s:%i",
4152 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
4156 func = ast_function_new(ast_ctx(var), var->name, var);
4158 parseerror(parser, "failed to allocate function for `%s`", var->name);
4161 vec_push(parser->functions, func);
4163 func->builtin = -parser_token(parser)->constval.i-1;
4166 if (!parser_next(parser)) {
4167 parseerror(parser, "expected comma or semicolon");
4169 ast_function_delete(func);
4170 var->constval.vfunc = NULL;
4174 else if (parser->tok == '{' || parser->tok == '[')
4178 parseerror(parser, "cannot declare functions within functions");
4183 ast_ctx(proto) = parser_ctx(parser);
4185 if (!parse_function_body(parser, var))
4187 ast_delete(basetype);
4188 for (i = 0; i < vec_size(parser->gotos); ++i)
4189 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
4190 vec_free(parser->gotos);
4191 vec_free(parser->labels);
4194 ast_expression *cexp;
4197 cexp = parse_expression_leave(parser, true);
4202 cval = (ast_value*)cexp;
4203 if (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
4204 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
4207 if (opts_standard != COMPILER_GMQCC &&
4208 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
4209 qualifier != CV_VAR)
4211 var->cvq = CV_CONST;
4213 var->hasvalue = true;
4214 if (cval->expression.vtype == TYPE_STRING)
4215 var->constval.vstring = parser_strdup(cval->constval.vstring);
4216 else if (cval->expression.vtype == TYPE_FIELD)
4217 var->constval.vfield = cval;
4219 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
4224 shunt sy = { NULL, NULL };
4227 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
4228 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
4229 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
4230 if (!parser_sy_pop(parser, &sy))
4233 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
4234 parseerror(parser, "internal error: leaked operands");
4235 ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out);
4244 if (parser->tok == ',') {
4245 if (!parser_next(parser)) {
4246 parseerror(parser, "expected another variable");
4250 if (parser->tok != TOKEN_IDENT) {
4251 parseerror(parser, "expected another variable");
4254 var = ast_value_copy(basetype);
4256 ast_value_set_name(var, parser_tokval(parser));
4257 if (!parser_next(parser)) {
4258 parseerror(parser, "error parsing variable declaration");
4264 if (parser->tok != ';') {
4265 parseerror(parser, "missing semicolon after variables");
4269 if (!parser_next(parser)) {
4270 parseerror(parser, "parse error after variable declaration");
4274 ast_delete(basetype);
4278 if (cleanvar && var)
4280 ast_delete(basetype);
4284 ast_delete(basetype);
4285 if (cleanvar && var)
4287 if (me[0]) ast_member_delete(me[0]);
4288 if (me[1]) ast_member_delete(me[1]);
4289 if (me[2]) ast_member_delete(me[2]);
4293 static bool parser_global_statement(parser_t *parser)
4297 ast_value *istype = NULL;
4299 if (parser->tok == TOKEN_IDENT)
4300 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
4302 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
4304 return parse_variable(parser, NULL, false, CV_NONE, istype, false);
4306 else if (parse_var_qualifiers(parser, false, &cvq, &noref))
4308 if (cvq == CV_WRONG)
4310 return parse_variable(parser, NULL, true, cvq, NULL, noref);
4312 else if (parser->tok == TOKEN_KEYWORD)
4314 if (!strcmp(parser_tokval(parser), "typedef")) {
4315 if (!parser_next(parser)) {
4316 parseerror(parser, "expected type definition after 'typedef'");
4319 return parse_typedef(parser);
4321 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
4324 else if (parser->tok == '#')
4326 return parse_pragma(parser);
4328 else if (parser->tok == '$')
4330 if (!parser_next(parser)) {
4331 parseerror(parser, "parse error");
4337 parseerror(parser, "unexpected token: %s", parser->lex->tok.value);
4343 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
4345 return util_crc16(old, str, strlen(str));
4348 static void progdefs_crc_file(const char *str)
4350 /* write to progdefs.h here */
4354 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
4356 old = progdefs_crc_sum(old, str);
4357 progdefs_crc_file(str);
4361 static void generate_checksum(parser_t *parser)
4363 uint16_t crc = 0xFFFF;
4367 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
4368 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
4370 progdefs_crc_file("\tint\tpad;\n");
4371 progdefs_crc_file("\tint\tofs_return[3];\n");
4372 progdefs_crc_file("\tint\tofs_parm0[3];\n");
4373 progdefs_crc_file("\tint\tofs_parm1[3];\n");
4374 progdefs_crc_file("\tint\tofs_parm2[3];\n");
4375 progdefs_crc_file("\tint\tofs_parm3[3];\n");
4376 progdefs_crc_file("\tint\tofs_parm4[3];\n");
4377 progdefs_crc_file("\tint\tofs_parm5[3];\n");
4378 progdefs_crc_file("\tint\tofs_parm6[3];\n");
4379 progdefs_crc_file("\tint\tofs_parm7[3];\n");
4381 for (i = 0; i < parser->crc_globals; ++i) {
4382 if (!ast_istype(parser->globals[i], ast_value))
4384 value = (ast_value*)(parser->globals[i]);
4385 switch (value->expression.vtype) {
4386 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
4387 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
4388 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
4389 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
4391 crc = progdefs_crc_both(crc, "\tint\t");
4394 crc = progdefs_crc_both(crc, value->name);
4395 crc = progdefs_crc_both(crc, ";\n");
4397 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
4398 for (i = 0; i < parser->crc_fields; ++i) {
4399 if (!ast_istype(parser->fields[i], ast_value))
4401 value = (ast_value*)(parser->fields[i]);
4402 switch (value->expression.next->expression.vtype) {
4403 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
4404 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
4405 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
4406 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
4408 crc = progdefs_crc_both(crc, "\tint\t");
4411 crc = progdefs_crc_both(crc, value->name);
4412 crc = progdefs_crc_both(crc, ";\n");
4414 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
4419 static parser_t *parser;
4425 parser = (parser_t*)mem_a(sizeof(parser_t));
4429 memset(parser, 0, sizeof(*parser));
4431 for (i = 0; i < operator_count; ++i) {
4432 if (operators[i].id == opid1('=')) {
4433 parser->assign_op = operators+i;
4437 if (!parser->assign_op) {
4438 printf("internal error: initializing parser: failed to find assign operator\n");
4443 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
4444 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
4445 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
4446 vec_push(parser->_blocktypedefs, 0);
4450 bool parser_compile()
4452 /* initial lexer/parser state */
4453 parser->lex->flags.noops = true;
4455 if (parser_next(parser))
4457 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
4459 if (!parser_global_statement(parser)) {
4460 if (parser->tok == TOKEN_EOF)
4461 parseerror(parser, "unexpected eof");
4462 else if (!parser->errors)
4463 parseerror(parser, "there have been errors, bailing out");
4464 lex_close(parser->lex);
4470 parseerror(parser, "parse error");
4471 lex_close(parser->lex);
4476 lex_close(parser->lex);
4479 return !parser->errors;
4482 bool parser_compile_file(const char *filename)
4484 parser->lex = lex_open(filename);
4486 con_err("failed to open file \"%s\"\n", filename);
4489 return parser_compile();
4492 bool parser_compile_string_len(const char *name, const char *str, size_t len)
4494 parser->lex = lex_open_string(str, len, name);
4496 con_err("failed to create lexer for string \"%s\"\n", name);
4499 return parser_compile();
4502 bool parser_compile_string(const char *name, const char *str)
4504 parser->lex = lex_open_string(str, strlen(str), name);
4506 con_err("failed to create lexer for string \"%s\"\n", name);
4509 return parser_compile();
4512 void parser_cleanup()
4515 for (i = 0; i < vec_size(parser->accessors); ++i) {
4516 ast_delete(parser->accessors[i]->constval.vfunc);
4517 parser->accessors[i]->constval.vfunc = NULL;
4518 ast_delete(parser->accessors[i]);
4520 for (i = 0; i < vec_size(parser->functions); ++i) {
4521 ast_delete(parser->functions[i]);
4523 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
4524 ast_delete(parser->imm_vector[i]);
4526 for (i = 0; i < vec_size(parser->imm_string); ++i) {
4527 ast_delete(parser->imm_string[i]);
4529 for (i = 0; i < vec_size(parser->imm_float); ++i) {
4530 ast_delete(parser->imm_float[i]);
4532 for (i = 0; i < vec_size(parser->fields); ++i) {
4533 ast_delete(parser->fields[i]);
4535 for (i = 0; i < vec_size(parser->globals); ++i) {
4536 ast_delete(parser->globals[i]);
4538 vec_free(parser->accessors);
4539 vec_free(parser->functions);
4540 vec_free(parser->imm_vector);
4541 vec_free(parser->imm_string);
4542 vec_free(parser->imm_float);
4543 vec_free(parser->globals);
4544 vec_free(parser->fields);
4546 for (i = 0; i < vec_size(parser->variables); ++i)
4547 util_htdel(parser->variables[i]);
4548 vec_free(parser->variables);
4549 vec_free(parser->_blocklocals);
4550 vec_free(parser->_locals);
4552 for (i = 0; i < vec_size(parser->_typedefs); ++i)
4553 ast_delete(parser->_typedefs[i]);
4554 vec_free(parser->_typedefs);
4555 for (i = 0; i < vec_size(parser->typedefs); ++i)
4556 util_htdel(parser->typedefs[i]);
4557 vec_free(parser->typedefs);
4558 vec_free(parser->_blocktypedefs);
4560 vec_free(parser->_block_ctx);
4562 vec_free(parser->labels);
4563 vec_free(parser->gotos);
4568 bool parser_finish(const char *output)
4574 if (!parser->errors)
4576 ir = ir_builder_new("gmqcc_out");
4578 con_out("failed to allocate builder\n");
4582 for (i = 0; i < vec_size(parser->fields); ++i) {
4585 if (!ast_istype(parser->fields[i], ast_value))
4587 field = (ast_value*)parser->fields[i];
4588 hasvalue = field->hasvalue;
4589 field->hasvalue = false;
4590 if (!ast_global_codegen((ast_value*)field, ir, true)) {
4591 con_out("failed to generate field %s\n", field->name);
4592 ir_builder_delete(ir);
4597 ast_expression *subtype;
4598 field->hasvalue = true;
4599 subtype = field->expression.next;
4600 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
4601 if (subtype->expression.vtype == TYPE_FIELD)
4602 ifld->fieldtype = subtype->expression.next->expression.vtype;
4603 else if (subtype->expression.vtype == TYPE_FUNCTION)
4604 ifld->outtype = subtype->expression.next->expression.vtype;
4605 (void)!ir_value_set_field(field->ir_v, ifld);
4608 for (i = 0; i < vec_size(parser->globals); ++i) {
4610 if (!ast_istype(parser->globals[i], ast_value))
4612 asvalue = (ast_value*)(parser->globals[i]);
4613 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
4614 retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
4615 "unused global: `%s`", asvalue->name);
4617 if (!ast_global_codegen(asvalue, ir, false)) {
4618 con_out("failed to generate global %s\n", asvalue->name);
4619 ir_builder_delete(ir);
4623 for (i = 0; i < vec_size(parser->imm_float); ++i) {
4624 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
4625 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
4626 ir_builder_delete(ir);
4630 for (i = 0; i < vec_size(parser->imm_string); ++i) {
4631 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
4632 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
4633 ir_builder_delete(ir);
4637 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
4638 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
4639 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
4640 ir_builder_delete(ir);
4644 for (i = 0; i < vec_size(parser->globals); ++i) {
4646 if (!ast_istype(parser->globals[i], ast_value))
4648 asvalue = (ast_value*)(parser->globals[i]);
4649 if (!ast_generate_accessors(asvalue, ir)) {
4650 ir_builder_delete(ir);
4654 for (i = 0; i < vec_size(parser->fields); ++i) {
4656 asvalue = (ast_value*)(parser->fields[i]->expression.next);
4658 if (!ast_istype((ast_expression*)asvalue, ast_value))
4660 if (asvalue->expression.vtype != TYPE_ARRAY)
4662 if (!ast_generate_accessors(asvalue, ir)) {
4663 ir_builder_delete(ir);
4667 for (i = 0; i < vec_size(parser->functions); ++i) {
4668 if (!ast_function_codegen(parser->functions[i], ir)) {
4669 con_out("failed to generate function %s\n", parser->functions[i]->name);
4670 ir_builder_delete(ir);
4675 ir_builder_dump(ir, con_out);
4676 for (i = 0; i < vec_size(parser->functions); ++i) {
4677 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
4678 con_out("failed to finalize function %s\n", parser->functions[i]->name);
4679 ir_builder_delete(ir);
4686 ir_builder_dump(ir, con_out);
4688 generate_checksum(parser);
4690 if (!ir_builder_generate(ir, output)) {
4691 con_out("*** failed to generate output file\n");
4692 ir_builder_delete(ir);
4697 ir_builder_delete(ir);
4701 con_out("*** there were compile errors\n");