6 * Permission is hereby granted, free of charge, to any person obtaining a copy of
7 * this software and associated documentation files (the "Software"), to deal in
8 * the Software without restriction, including without limitation the rights to
9 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
10 * of the Software, and to permit persons to whom the Software is furnished to do
11 * so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in all
14 * copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 /* beginning of locals */
31 #define PARSER_HT_LOCALS 2
33 #define PARSER_HT_SIZE 1024
34 #define TYPEDEF_HT_SIZE 16
36 enum parser_pot { POT_PAREN, POT_TERNARY1, POT_TERNARY2 };
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;
60 ast_function *function;
62 /* All the labels the function defined...
63 * Should they be in ast_function instead?
68 const char **continues;
70 /* A list of hashtables for each scope */
76 /* not to be used directly, we use the hash table */
77 ast_expression **_locals;
79 ast_value **_typedefs;
80 size_t *_blocktypedefs;
83 /* we store the '=' operator info */
84 const oper_info *assign_op;
86 /* TYPE_FIELD -> parser_find_fields is used instead of find_var
87 * TODO: TYPE_VECTOR -> x, y and z are accepted in the gmqcc standard
88 * anything else: type error
92 /* Keep track of our ternary vs parenthesis nesting state.
93 * If we reach a 'comma' operator in a ternary without a paren,
94 * we shall trigger -Wternary-precedence.
102 static const ast_expression *intrinsic_debug_typestring = (ast_expression*)0x10;
104 static void parser_enterblock(parser_t *parser);
105 static bool parser_leaveblock(parser_t *parser);
106 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e);
107 static bool parse_typedef(parser_t *parser);
108 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref, bool is_static, uint32_t qflags, char *vstring);
109 static ast_block* parse_block(parser_t *parser);
110 static bool parse_block_into(parser_t *parser, ast_block *block);
111 static bool parse_statement_or_block(parser_t *parser, ast_expression **out);
112 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases);
113 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue);
114 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma);
116 static void parseerror(parser_t *parser, const char *fmt, ...)
120 vcompile_error(parser->lex->tok.ctx, 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, ...)
130 r = vcompile_warning(parser->lex->tok.ctx, warntype, fmt, ap);
135 static bool GMQCC_WARN genwarning(lex_ctx ctx, int warntype, const char *fmt, ...)
140 r = vcompile_warning(ctx, warntype, fmt, ap);
145 /**********************************************************************
146 * some maths used for constant folding
149 vector vec3_add(vector a, vector b)
158 vector vec3_sub(vector a, vector b)
167 qcfloat vec3_mulvv(vector a, vector b)
169 return (a.x * b.x + a.y * b.y + a.z * b.z);
172 vector vec3_mulvf(vector a, float b)
181 /**********************************************************************
185 bool parser_next(parser_t *parser)
187 /* lex_do kills the previous token */
188 parser->tok = lex_do(parser->lex);
189 if (parser->tok == TOKEN_EOF)
191 if (parser->tok >= TOKEN_ERROR) {
192 parseerror(parser, "lex error");
198 #define parser_tokval(p) ((p)->lex->tok.value)
199 #define parser_token(p) (&((p)->lex->tok))
200 #define parser_ctx(p) ((p)->lex->tok.ctx)
202 static ast_value* parser_const_float(parser_t *parser, double d)
206 for (i = 0; i < vec_size(parser->imm_float); ++i) {
207 const double compare = parser->imm_float[i]->constval.vfloat;
208 if (memcmp((const void*)&compare, (const void *)&d, sizeof(double)) == 0)
209 return parser->imm_float[i];
211 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_FLOAT);
213 out->hasvalue = true;
214 out->constval.vfloat = d;
215 vec_push(parser->imm_float, out);
219 static ast_value* parser_const_float_0(parser_t *parser)
221 if (!parser->imm_float_zero)
222 parser->imm_float_zero = parser_const_float(parser, 0);
223 return parser->imm_float_zero;
226 static ast_value* parser_const_float_1(parser_t *parser)
228 if (!parser->imm_float_one)
229 parser->imm_float_one = parser_const_float(parser, 1);
230 return parser->imm_float_one;
233 static char *parser_strdup(const char *str)
236 /* actually dup empty strings */
237 char *out = (char*)mem_a(1);
241 return util_strdup(str);
244 static ast_value* parser_const_string(parser_t *parser, const char *str, bool dotranslate)
248 for (i = 0; i < vec_size(parser->imm_string); ++i) {
249 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
250 return parser->imm_string[i];
254 snprintf(name, sizeof(name), "dotranslate_%lu", (unsigned long)(parser->translated++));
255 out = ast_value_new(parser_ctx(parser), name, TYPE_STRING);
257 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
259 out->hasvalue = true;
260 out->constval.vstring = parser_strdup(str);
261 vec_push(parser->imm_string, out);
265 static ast_value* parser_const_vector(parser_t *parser, vector v)
269 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
270 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
271 return parser->imm_vector[i];
273 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
275 out->hasvalue = true;
276 out->constval.vvec = v;
277 vec_push(parser->imm_vector, out);
281 static ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
287 return parser_const_vector(parser, v);
290 static ast_value* parser_const_vector_0(parser_t *parser)
292 if (!parser->imm_vector_zero)
293 parser->imm_vector_zero = parser_const_vector_f(parser, 0, 0, 0);
294 return parser->imm_vector_zero;
297 static ast_expression* parser_find_field(parser_t *parser, const char *name)
299 return ( ast_expression*)util_htget(parser->htfields, name);
302 static ast_expression* parser_find_global(parser_t *parser, const char *name)
304 return (ast_expression*)util_htget(parser->htglobals, name);
307 static ast_expression* parser_find_param(parser_t *parser, const char *name)
311 if (!parser->function)
313 fun = parser->function->vtype;
314 for (i = 0; i < vec_size(fun->expression.params); ++i) {
315 if (!strcmp(fun->expression.params[i]->name, name))
316 return (ast_expression*)(fun->expression.params[i]);
321 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
326 hash = util_hthash(parser->htglobals, name);
329 for (i = vec_size(parser->variables); i > upto;) {
331 if ( (e = (ast_expression*)util_htgeth(parser->variables[i], name, hash)) )
335 return parser_find_param(parser, name);
338 static ast_expression* parser_find_var(parser_t *parser, const char *name)
342 v = parser_find_local(parser, name, 0, &dummy);
343 if (!v) v = parser_find_global(parser, name);
347 static ast_value* parser_find_typedef(parser_t *parser, const char *name, size_t upto)
351 hash = util_hthash(parser->typedefs[0], name);
353 for (i = vec_size(parser->typedefs); i > upto;) {
355 if ( (e = (ast_value*)util_htgeth(parser->typedefs[i], name, hash)) )
363 size_t etype; /* 0 = expression, others are operators */
367 ast_block *block; /* for commas and function calls */
376 #define SY_PAREN_EXPR '('
377 #define SY_PAREN_FUNC 'f'
378 #define SY_PAREN_INDEX '['
379 #define SY_PAREN_TERNARY '?'
381 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
392 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
396 e.out = (ast_expression*)v;
403 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
405 e.etype = 1 + (op - operators);
414 static sy_elem syparen(lex_ctx ctx, int p, size_t off) {
426 # define DEBUGSHUNTDO(x) x
428 # define DEBUGSHUNTDO(x)
431 /* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
432 * so we need to rotate it to become ent.(foo[n]).
434 static bool rotate_entfield_array_index_nodes(ast_expression **out)
436 ast_array_index *index;
437 ast_entfield *entfield;
441 ast_expression *entity;
443 lex_ctx ctx = ast_ctx(*out);
445 if (!ast_istype(*out, ast_array_index))
447 index = (ast_array_index*)*out;
449 if (!ast_istype(index->array, ast_entfield))
451 entfield = (ast_entfield*)index->array;
453 if (!ast_istype(entfield->field, ast_value))
455 field = (ast_value*)entfield->field;
458 entity = entfield->entity;
462 index = ast_array_index_new(ctx, (ast_expression*)field, sub);
463 entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
464 *out = (ast_expression*)entfield;
469 static bool immediate_is_true(lex_ctx ctx, ast_value *v)
471 switch (v->expression.vtype) {
473 return !!v->constval.vfloat;
475 return !!v->constval.vint;
477 if (OPTS_FLAG(CORRECT_LOGIC))
478 return v->constval.vvec.x &&
479 v->constval.vvec.y &&
482 return !!(v->constval.vvec.x);
484 if (!v->constval.vstring)
486 if (v->constval.vstring && OPTS_FLAG(TRUE_EMPTY_STRINGS))
488 return !!v->constval.vstring[0];
490 compile_error(ctx, "internal error: immediate_is_true on invalid type");
491 return !!v->constval.vfunc;
495 static bool parser_sy_apply_operator(parser_t *parser, shunt *sy)
499 ast_expression *out = NULL;
500 ast_expression *exprs[3];
501 ast_block *blocks[3];
502 ast_value *asvalue[3];
503 ast_binstore *asbinstore;
504 size_t i, assignop, addop, subop;
505 qcint generated_op = 0;
510 if (!vec_size(sy->ops)) {
511 parseerror(parser, "internal error: missing operator");
515 if (vec_last(sy->ops).paren) {
516 parseerror(parser, "unmatched parenthesis");
520 op = &operators[vec_last(sy->ops).etype - 1];
521 ctx = vec_last(sy->ops).ctx;
523 DEBUGSHUNTDO(con_out("apply %s\n", op->op));
525 if (vec_size(sy->out) < op->operands) {
526 parseerror(parser, "internal error: not enough operands: %i (operator %s (%i))", vec_size(sy->out),
527 op->op, (int)op->id);
531 vec_shrinkby(sy->ops, 1);
533 /* op(:?) has no input and no output */
537 vec_shrinkby(sy->out, op->operands);
538 for (i = 0; i < op->operands; ++i) {
539 exprs[i] = sy->out[vec_size(sy->out)+i].out;
540 blocks[i] = sy->out[vec_size(sy->out)+i].block;
541 asvalue[i] = (ast_value*)exprs[i];
544 if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
545 parseerror(parser, "internal error: operator cannot be applied on empty blocks");
549 #define NotSameType(T) \
550 (exprs[0]->expression.vtype != exprs[1]->expression.vtype || \
551 exprs[0]->expression.vtype != T)
552 #define CanConstFold1(A) \
553 (ast_istype((A), ast_value) && ((ast_value*)(A))->hasvalue && (((ast_value*)(A))->cvq == CV_CONST) &&\
554 (A)->expression.vtype != TYPE_FUNCTION)
555 #define CanConstFold(A, B) \
556 (CanConstFold1(A) && CanConstFold1(B))
557 #define ConstV(i) (asvalue[(i)]->constval.vvec)
558 #define ConstF(i) (asvalue[(i)]->constval.vfloat)
559 #define ConstS(i) (asvalue[(i)]->constval.vstring)
563 parseerror(parser, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
567 if (exprs[0]->expression.vtype == TYPE_ENTITY) {
568 if (exprs[1]->expression.vtype != TYPE_FIELD) {
569 parseerror(parser, "type error: right hand of member-operand should be an entity-field");
572 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
574 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
575 parseerror(parser, "internal error: vector access is not supposed to be handled at this point");
579 parseerror(parser, "type error: member-of operator on something that is not an entity or vector");
585 if (exprs[0]->expression.vtype != TYPE_ARRAY &&
586 !(exprs[0]->expression.vtype == TYPE_FIELD &&
587 exprs[0]->expression.next->expression.vtype == TYPE_ARRAY))
589 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
590 parseerror(parser, "cannot index value of type %s", ty1);
593 if (exprs[1]->expression.vtype != TYPE_FLOAT) {
594 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
595 parseerror(parser, "index must be of type float, not %s", ty1);
598 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
599 if (rotate_entfield_array_index_nodes(&out))
602 /* This is not broken in fteqcc anymore */
603 if (opts.standard != COMPILER_GMQCC) {
604 /* this error doesn't need to make us bail out */
605 (void)!parsewarning(parser, WARN_EXTENSIONS,
606 "accessing array-field members of an entity without parenthesis\n"
607 " -> this is an extension from -std=gmqcc");
615 if (!ast_block_add_expr(blocks[0], exprs[1]))
618 blocks[0] = ast_block_new(ctx);
619 if (!ast_block_add_expr(blocks[0], exprs[0]) ||
620 !ast_block_add_expr(blocks[0], exprs[1]))
625 if (!ast_block_set_type(blocks[0], exprs[1]))
628 vec_push(sy->out, syblock(ctx, blocks[0]));
635 switch (exprs[0]->expression.vtype) {
637 if (CanConstFold1(exprs[0]))
638 out = (ast_expression*)parser_const_float(parser, -ConstF(0));
640 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
641 (ast_expression*)parser_const_float_0(parser),
645 if (CanConstFold1(exprs[0]))
646 out = (ast_expression*)parser_const_vector_f(parser,
647 -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
649 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
650 (ast_expression*)parser_const_vector_0(parser),
654 parseerror(parser, "invalid types used in expression: cannot negate type %s",
655 type_name[exprs[0]->expression.vtype]);
661 switch (exprs[0]->expression.vtype) {
663 if (CanConstFold1(exprs[0]))
664 out = (ast_expression*)parser_const_float(parser, !ConstF(0));
666 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
669 if (CanConstFold1(exprs[0]))
670 out = (ast_expression*)parser_const_float(parser,
671 (!ConstV(0).x && !ConstV(0).y && !ConstV(0).z));
673 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
676 if (CanConstFold1(exprs[0])) {
677 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
678 out = (ast_expression*)parser_const_float(parser, !ConstS(0));
680 out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
682 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
683 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
685 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
688 /* we don't constant-fold NOT for these types */
690 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
693 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
696 parseerror(parser, "invalid types used in expression: cannot logically negate type %s",
697 type_name[exprs[0]->expression.vtype]);
703 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
704 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
706 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
707 type_name[exprs[0]->expression.vtype],
708 type_name[exprs[1]->expression.vtype]);
711 switch (exprs[0]->expression.vtype) {
713 if (CanConstFold(exprs[0], exprs[1]))
715 out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
718 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
721 if (CanConstFold(exprs[0], exprs[1]))
722 out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
724 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
727 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
728 type_name[exprs[0]->expression.vtype],
729 type_name[exprs[1]->expression.vtype]);
734 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
735 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
737 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
738 type_name[exprs[1]->expression.vtype],
739 type_name[exprs[0]->expression.vtype]);
742 switch (exprs[0]->expression.vtype) {
744 if (CanConstFold(exprs[0], exprs[1]))
745 out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
747 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
750 if (CanConstFold(exprs[0], exprs[1]))
751 out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
753 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
756 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
757 type_name[exprs[1]->expression.vtype],
758 type_name[exprs[0]->expression.vtype]);
763 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
764 !(exprs[0]->expression.vtype == TYPE_VECTOR &&
765 exprs[1]->expression.vtype == TYPE_FLOAT) &&
766 !(exprs[1]->expression.vtype == TYPE_VECTOR &&
767 exprs[0]->expression.vtype == TYPE_FLOAT)
770 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
771 type_name[exprs[1]->expression.vtype],
772 type_name[exprs[0]->expression.vtype]);
775 switch (exprs[0]->expression.vtype) {
777 if (exprs[1]->expression.vtype == TYPE_VECTOR)
779 if (CanConstFold(exprs[0], exprs[1]))
780 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
782 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
786 if (CanConstFold(exprs[0], exprs[1]))
787 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
789 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
793 if (exprs[1]->expression.vtype == TYPE_FLOAT)
795 if (CanConstFold(exprs[0], exprs[1]))
796 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
798 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
802 if (CanConstFold(exprs[0], exprs[1]))
803 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
804 else if (OPTS_OPTIMIZATION(OPTIM_VECTOR_COMPONENTS) && CanConstFold1(exprs[0])) {
805 vector vec = ConstV(0);
806 if (!vec.y && !vec.z) { /* 'n 0 0' * v */
807 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
808 out = (ast_expression*)ast_member_new(ctx, exprs[1], 0, NULL);
809 out->expression.node.keep = false;
810 ((ast_member*)out)->rvalue = true;
812 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.x), out);
814 else if (!vec.x && !vec.z) { /* '0 n 0' * v */
815 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
816 out = (ast_expression*)ast_member_new(ctx, exprs[1], 1, NULL);
817 out->expression.node.keep = false;
818 ((ast_member*)out)->rvalue = true;
820 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.y), out);
822 else if (!vec.x && !vec.y) { /* '0 n 0' * v */
823 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
824 out = (ast_expression*)ast_member_new(ctx, exprs[1], 2, NULL);
825 out->expression.node.keep = false;
826 ((ast_member*)out)->rvalue = true;
828 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.z), out);
831 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
833 else if (OPTS_OPTIMIZATION(OPTIM_VECTOR_COMPONENTS) && CanConstFold1(exprs[1])) {
834 vector vec = ConstV(1);
835 if (!vec.y && !vec.z) { /* v * 'n 0 0' */
836 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
837 out = (ast_expression*)ast_member_new(ctx, exprs[0], 0, NULL);
838 out->expression.node.keep = false;
839 ((ast_member*)out)->rvalue = true;
841 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.x));
843 else if (!vec.x && !vec.z) { /* v * '0 n 0' */
844 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
845 out = (ast_expression*)ast_member_new(ctx, exprs[0], 1, NULL);
846 out->expression.node.keep = false;
847 ((ast_member*)out)->rvalue = true;
849 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.y));
851 else if (!vec.x && !vec.y) { /* v * '0 n 0' */
852 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
853 out = (ast_expression*)ast_member_new(ctx, exprs[0], 2, NULL);
854 out->expression.node.keep = false;
855 ((ast_member*)out)->rvalue = true;
857 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.z));
860 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
863 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
867 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
868 type_name[exprs[1]->expression.vtype],
869 type_name[exprs[0]->expression.vtype]);
874 if (NotSameType(TYPE_FLOAT)) {
875 parseerror(parser, "invalid types used in expression: cannot divide types %s and %s",
876 type_name[exprs[0]->expression.vtype],
877 type_name[exprs[1]->expression.vtype]);
880 if (CanConstFold(exprs[0], exprs[1]))
881 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
883 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
887 parseerror(parser, "qc does not have a modulo operator");
891 if (NotSameType(TYPE_FLOAT)) {
892 parseerror(parser, "invalid types used in expression: cannot perform bit operations between types %s and %s",
893 type_name[exprs[0]->expression.vtype],
894 type_name[exprs[1]->expression.vtype]);
897 if (CanConstFold(exprs[0], exprs[1]))
898 out = (ast_expression*)parser_const_float(parser,
899 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
900 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
902 out = (ast_expression*)ast_binary_new(ctx,
903 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
907 parseerror(parser, "TODO: bitxor");
912 case opid3('<','<','='):
913 case opid3('>','>','='):
914 parseerror(parser, "TODO: shifts");
918 generated_op += 1; /* INSTR_OR */
920 generated_op += INSTR_AND;
922 if (NotSameType(TYPE_FLOAT)) {
923 parseerror(parser, "invalid types used in expression: cannot perform logical operations between types %s and %s",
924 type_name[exprs[0]->expression.vtype],
925 type_name[exprs[1]->expression.vtype]);
926 parseerror(parser, "TODO: logical ops for arbitrary types using INSTR_NOT");
927 parseerror(parser, "TODO: optional early out");
931 if (CanConstFold(exprs[0], exprs[1]))
933 if (OPTS_FLAG(PERL_LOGIC)) {
934 if (immediate_is_true(ctx, asvalue[0]))
938 out = (ast_expression*)parser_const_float(parser,
939 ( (generated_op == INSTR_OR)
940 ? (immediate_is_true(ctx, asvalue[0]) || immediate_is_true(ctx, asvalue[1]))
941 : (immediate_is_true(ctx, asvalue[0]) && immediate_is_true(ctx, asvalue[1])) )
946 if (OPTS_FLAG(PERL_LOGIC) && !ast_compare_type(exprs[0], exprs[1])) {
947 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
948 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
949 parseerror(parser, "invalid types for logical operation with -fperl-logic: %s and %s", ty1, ty2);
952 for (i = 0; i < 2; ++i) {
953 if (OPTS_FLAG(CORRECT_LOGIC) && exprs[i]->expression.vtype == TYPE_VECTOR) {
954 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[i]);
956 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
958 exprs[i] = out; out = NULL;
959 if (OPTS_FLAG(PERL_LOGIC)) {
960 /* here we want to keep the right expressions' type */
964 else if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && exprs[i]->expression.vtype == TYPE_STRING) {
965 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[i]);
967 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
969 exprs[i] = out; out = NULL;
970 if (OPTS_FLAG(PERL_LOGIC)) {
971 /* here we want to keep the right expressions' type */
976 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
981 if (vec_last(parser->pot) != POT_TERNARY2) {
982 parseerror(parser, "mismatched parenthesis/ternary");
985 vec_pop(parser->pot);
986 if (exprs[1]->expression.vtype != exprs[2]->expression.vtype) {
987 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
988 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
989 parseerror(parser, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
992 if (CanConstFold1(exprs[0]))
993 out = (ConstF(0) ? exprs[1] : exprs[2]);
995 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
999 generated_op += 1; /* INSTR_GT */
1001 generated_op += 1; /* INSTR_LT */
1002 case opid2('>', '='):
1003 generated_op += 1; /* INSTR_GE */
1004 case opid2('<', '='):
1005 generated_op += INSTR_LE;
1006 if (NotSameType(TYPE_FLOAT)) {
1007 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
1008 type_name[exprs[0]->expression.vtype],
1009 type_name[exprs[1]->expression.vtype]);
1012 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
1014 case opid2('!', '='):
1015 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
1016 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
1017 type_name[exprs[0]->expression.vtype],
1018 type_name[exprs[1]->expression.vtype]);
1021 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
1023 case opid2('=', '='):
1024 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
1025 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
1026 type_name[exprs[0]->expression.vtype],
1027 type_name[exprs[1]->expression.vtype]);
1030 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
1034 if (ast_istype(exprs[0], ast_entfield)) {
1035 ast_expression *field = ((ast_entfield*)exprs[0])->field;
1036 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1037 exprs[0]->expression.vtype == TYPE_FIELD &&
1038 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
1040 assignop = type_storep_instr[TYPE_VECTOR];
1043 assignop = type_storep_instr[exprs[0]->expression.vtype];
1044 if (assignop == AINSTR_END ||
1045 !ast_compare_type(field->expression.next, exprs[1]))
1047 ast_type_to_string(field->expression.next, ty1, sizeof(ty1));
1048 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1049 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1050 field->expression.next->expression.vtype == TYPE_FUNCTION &&
1051 exprs[1]->expression.vtype == TYPE_FUNCTION)
1053 (void)!parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
1054 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1057 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1062 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1063 exprs[0]->expression.vtype == TYPE_FIELD &&
1064 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
1066 assignop = type_store_instr[TYPE_VECTOR];
1069 assignop = type_store_instr[exprs[0]->expression.vtype];
1072 if (assignop == AINSTR_END) {
1073 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1074 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1075 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1077 else if (exprs[1]->expression.vtype != TYPE_NIL &&
1078 !ast_compare_type(exprs[0], exprs[1]))
1080 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1081 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1082 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1083 exprs[0]->expression.vtype == TYPE_FUNCTION &&
1084 exprs[1]->expression.vtype == TYPE_FUNCTION)
1086 (void)!parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
1087 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1090 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1093 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1094 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1096 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
1098 case opid3('+','+','P'):
1099 case opid3('-','-','P'):
1101 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1102 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1103 parseerror(parser, "invalid type for prefix increment: %s", ty1);
1106 if (op->id == opid3('+','+','P'))
1107 addop = INSTR_ADD_F;
1109 addop = INSTR_SUB_F;
1110 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1111 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1113 if (ast_istype(exprs[0], ast_entfield)) {
1114 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1116 (ast_expression*)parser_const_float_1(parser));
1118 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1120 (ast_expression*)parser_const_float_1(parser));
1123 case opid3('S','+','+'):
1124 case opid3('S','-','-'):
1126 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1127 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1128 parseerror(parser, "invalid type for suffix increment: %s", ty1);
1131 if (op->id == opid3('S','+','+')) {
1132 addop = INSTR_ADD_F;
1133 subop = INSTR_SUB_F;
1135 addop = INSTR_SUB_F;
1136 subop = INSTR_ADD_F;
1138 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1139 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1141 if (ast_istype(exprs[0], ast_entfield)) {
1142 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1144 (ast_expression*)parser_const_float_1(parser));
1146 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1148 (ast_expression*)parser_const_float_1(parser));
1152 out = (ast_expression*)ast_binary_new(ctx, subop,
1154 (ast_expression*)parser_const_float_1(parser));
1156 case opid2('+','='):
1157 case opid2('-','='):
1158 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
1159 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
1161 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1162 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1163 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1167 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1168 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1170 if (ast_istype(exprs[0], ast_entfield))
1171 assignop = type_storep_instr[exprs[0]->expression.vtype];
1173 assignop = type_store_instr[exprs[0]->expression.vtype];
1174 switch (exprs[0]->expression.vtype) {
1176 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1177 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
1178 exprs[0], exprs[1]);
1181 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1182 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1183 exprs[0], exprs[1]);
1186 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1187 type_name[exprs[0]->expression.vtype],
1188 type_name[exprs[1]->expression.vtype]);
1192 case opid2('*','='):
1193 case opid2('/','='):
1194 if (exprs[1]->expression.vtype != TYPE_FLOAT ||
1195 !(exprs[0]->expression.vtype == TYPE_FLOAT ||
1196 exprs[0]->expression.vtype == TYPE_VECTOR))
1198 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1199 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1200 parseerror(parser, "invalid types used in expression: %s and %s",
1204 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1205 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1207 if (ast_istype(exprs[0], ast_entfield))
1208 assignop = type_storep_instr[exprs[0]->expression.vtype];
1210 assignop = type_store_instr[exprs[0]->expression.vtype];
1211 switch (exprs[0]->expression.vtype) {
1213 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1214 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1215 exprs[0], exprs[1]);
1218 if (op->id == opid2('*','=')) {
1219 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1220 exprs[0], exprs[1]);
1222 /* there's no DIV_VF */
1223 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
1224 (ast_expression*)parser_const_float_1(parser),
1228 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1233 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1234 type_name[exprs[0]->expression.vtype],
1235 type_name[exprs[1]->expression.vtype]);
1239 case opid2('&','='):
1240 case opid2('|','='):
1241 if (NotSameType(TYPE_FLOAT)) {
1242 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1243 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1244 parseerror(parser, "invalid types used in expression: %s and %s",
1248 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1249 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1251 if (ast_istype(exprs[0], ast_entfield))
1252 assignop = type_storep_instr[exprs[0]->expression.vtype];
1254 assignop = type_store_instr[exprs[0]->expression.vtype];
1255 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1256 (op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1257 exprs[0], exprs[1]);
1259 case opid3('&','~','='):
1260 /* This is like: a &= ~(b);
1261 * But QC has no bitwise-not, so we implement it as
1264 if (NotSameType(TYPE_FLOAT)) {
1265 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1266 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1267 parseerror(parser, "invalid types used in expression: %s and %s",
1271 if (ast_istype(exprs[0], ast_entfield))
1272 assignop = type_storep_instr[exprs[0]->expression.vtype];
1274 assignop = type_store_instr[exprs[0]->expression.vtype];
1275 out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1278 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1279 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1281 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1282 asbinstore->keep_dest = true;
1283 out = (ast_expression*)asbinstore;
1289 parseerror(parser, "failed to apply operand %s", op->op);
1293 DEBUGSHUNTDO(con_out("applied %s\n", op->op));
1294 vec_push(sy->out, syexp(ctx, out));
1298 static bool parser_close_call(parser_t *parser, shunt *sy)
1300 /* was a function call */
1301 ast_expression *fun;
1307 vec_shrinkby(sy->ops, 1);
1308 fid = sy->ops[vec_size(sy->ops)].off;
1310 /* out[fid] is the function
1311 * everything above is parameters...
1312 * 0 params = nothing
1313 * 1 params = ast_expression
1317 if (vec_size(sy->out) < 1 || vec_size(sy->out) <= fid) {
1318 parseerror(parser, "internal error: function call needs function and parameter list...");
1322 fun = sy->out[fid].out;
1324 if (fun == intrinsic_debug_typestring) {
1326 if (fid+2 != vec_size(sy->out) ||
1327 vec_last(sy->out).block)
1329 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1332 ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
1333 ast_unref(vec_last(sy->out).out);
1334 sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
1335 (ast_expression*)parser_const_string(parser, ty, false));
1336 vec_shrinkby(sy->out, 1);
1340 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1342 parseerror(parser, "internal error: failed to create ast_call node");
1346 if (fid+1 == vec_size(sy->out)) {
1349 } else if (fid+2 == vec_size(sy->out)) {
1351 vec_shrinkby(sy->out, 1);
1352 params = sy->out[vec_size(sy->out)].block;
1356 vec_push(call->params, sy->out[vec_size(sy->out)].out);
1358 paramcount = vec_size(params->exprs);
1359 call->params = params->exprs;
1360 params->exprs = NULL;
1363 (void)!ast_call_check_types(call);
1365 parseerror(parser, "invalid function call");
1369 /* overwrite fid, the function, with a call */
1370 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1372 if (fun->expression.vtype != TYPE_FUNCTION) {
1373 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
1377 if (!fun->expression.next) {
1378 parseerror(parser, "could not determine function return type");
1381 ast_value *fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1383 if (fun->expression.flags & AST_FLAG_DEPRECATED) {
1385 return !parsewarning(parser, WARN_DEPRECATED,
1386 "call to function (which is marked deprecated)\n",
1387 "-> it has been declared here: %s:%i",
1388 ast_ctx(fun).file, ast_ctx(fun).line);
1391 return !parsewarning(parser, WARN_DEPRECATED,
1392 "call to `%s` (which is marked deprecated)\n"
1393 "-> `%s` declared here: %s:%i",
1394 fval->name, fval->name, ast_ctx(fun).file, ast_ctx(fun).line);
1396 return !parsewarning(parser, WARN_DEPRECATED,
1397 "call to `%s` (deprecated: %s)\n"
1398 "-> `%s` declared here: %s:%i",
1399 fval->name, fval->desc, fval->name, ast_ctx(fun).file,
1403 if (vec_size(fun->expression.params) != paramcount &&
1404 !((fun->expression.flags & AST_FLAG_VARIADIC) &&
1405 vec_size(fun->expression.params) < paramcount))
1407 const char *fewmany = (vec_size(fun->expression.params) > paramcount) ? "few" : "many";
1408 if (opts.standard == COMPILER_GMQCC)
1411 parseerror(parser, "too %s parameters for call to %s: expected %i, got %i\n"
1412 " -> `%s` has been declared here: %s:%i",
1413 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1414 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1416 parseerror(parser, "too %s parameters for function call: expected %i, got %i\n"
1417 " -> it has been declared here: %s:%i",
1418 fewmany, (int)vec_size(fun->expression.params), (int)paramcount,
1419 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1425 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1426 "too %s parameters for call to %s: expected %i, got %i\n"
1427 " -> `%s` has been declared here: %s:%i",
1428 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1429 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1431 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1432 "too %s parameters for function call: expected %i, got %i\n"
1433 " -> it has been declared here: %s:%i",
1434 fewmany, (int)vec_size(fun->expression.params), (int)paramcount,
1435 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1443 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
1445 if (!vec_size(sy->ops)) {
1446 parseerror(parser, "unmatched closing paren");
1449 /* this would for bit a + (x) because there are no operators inside (x)
1450 if (sy->ops[vec_size(sy->ops)-1].paren == 1) {
1451 parseerror(parser, "empty parenthesis expression");
1455 while (vec_size(sy->ops)) {
1456 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_FUNC) {
1457 if (!parser_close_call(parser, sy))
1461 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_EXPR) {
1462 vec_shrinkby(sy->ops, 1);
1463 return !functions_only;
1465 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_INDEX) {
1468 /* pop off the parenthesis */
1469 vec_shrinkby(sy->ops, 1);
1470 /* then apply the index operator */
1471 if (!parser_sy_apply_operator(parser, sy))
1475 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_TERNARY) {
1478 if (vec_last(parser->pot) != POT_TERNARY1) {
1479 parseerror(parser, "mismatched colon in ternary expression (missing closing paren?)");
1482 vec_last(parser->pot) = POT_TERNARY2;
1483 /* pop off the parenthesis */
1484 vec_shrinkby(sy->ops, 1);
1487 if (!parser_sy_apply_operator(parser, sy))
1493 static void parser_reclassify_token(parser_t *parser)
1496 for (i = 0; i < operator_count; ++i) {
1497 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1498 parser->tok = TOKEN_OPERATOR;
1504 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue)
1506 ast_expression *expr = NULL;
1508 bool wantop = false;
1509 bool gotmemberof = false;
1510 /* only warn once about an assignment in a truth value because the current code
1511 * would trigger twice on: if(a = b && ...), once for the if-truth-value, once for the && part
1513 bool warn_truthvalue = true;
1515 /* count the parens because an if starts with one, so the
1516 * end of a condition is an unmatched closing paren
1524 parser->lex->flags.noops = false;
1526 parser_reclassify_token(parser);
1531 gotmemberof = false;
1533 parser->memberof = 0;
1535 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1536 parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "_"))
1538 /* a translatable string */
1542 parseerror(parser, "expected operator or end of statement, got constant");
1546 parser->lex->flags.noops = true;
1547 if (!parser_next(parser) || parser->tok != '(') {
1548 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1551 parser->lex->flags.noops = false;
1552 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1553 parseerror(parser, "expected a constant string in translatable-string extension");
1556 val = parser_const_string(parser, parser_tokval(parser), true);
1560 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1561 DEBUGSHUNTDO(con_out("push string\n"));
1563 if (!parser_next(parser) || parser->tok != ')') {
1564 parseerror(parser, "expected closing paren after translatable string");
1568 else if (parser->tok == TOKEN_IDENT)
1570 ast_expression *var;
1572 parseerror(parser, "expected operator or end of statement");
1577 if (opts.standard == COMPILER_GMQCC)
1579 if (parser->memberof == TYPE_ENTITY) {
1580 /* still get vars first since there could be a fieldpointer */
1581 var = parser_find_var(parser, parser_tokval(parser));
1583 var = parser_find_field(parser, parser_tokval(parser));
1585 else if (parser->memberof == TYPE_VECTOR)
1587 parseerror(parser, "TODO: implement effective vector member access");
1590 else if (parser->memberof) {
1591 parseerror(parser, "namespace for member not found");
1595 var = parser_find_var(parser, parser_tokval(parser));
1597 var = parser_find_var(parser, parser_tokval(parser));
1599 var = parser_find_field(parser, parser_tokval(parser));
1603 if (!strcmp(parser_tokval(parser), "__builtin_debug_typestring")) {
1604 var = (ast_expression*)intrinsic_debug_typestring;
1609 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1615 if (ast_istype(var, ast_value)) {
1616 ((ast_value*)var)->uses++;
1618 else if (ast_istype(var, ast_member)) {
1619 ast_member *mem = (ast_member*)var;
1620 if (ast_istype(mem->owner, ast_value))
1621 ((ast_value*)(mem->owner))->uses++;
1624 vec_push(sy.out, syexp(parser_ctx(parser), var));
1625 DEBUGSHUNTDO(con_out("push %s\n", parser_tokval(parser)));
1627 else if (parser->tok == TOKEN_FLOATCONST) {
1630 parseerror(parser, "expected operator or end of statement, got constant");
1634 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1637 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1638 DEBUGSHUNTDO(con_out("push %g\n", parser_token(parser)->constval.f));
1640 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1643 parseerror(parser, "expected operator or end of statement, got constant");
1647 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1650 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1651 DEBUGSHUNTDO(con_out("push %i\n", parser_token(parser)->constval.i));
1653 else if (parser->tok == TOKEN_STRINGCONST) {
1656 parseerror(parser, "expected operator or end of statement, got constant");
1660 val = parser_const_string(parser, parser_tokval(parser), false);
1663 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1664 DEBUGSHUNTDO(con_out("push string\n"));
1666 else if (parser->tok == TOKEN_VECTORCONST) {
1669 parseerror(parser, "expected operator or end of statement, got constant");
1673 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1676 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1677 DEBUGSHUNTDO(con_out("push '%g %g %g'\n",
1678 parser_token(parser)->constval.v.x,
1679 parser_token(parser)->constval.v.y,
1680 parser_token(parser)->constval.v.z));
1682 else if (parser->tok == '(') {
1683 parseerror(parser, "internal error: '(' should be classified as operator");
1686 else if (parser->tok == '[') {
1687 parseerror(parser, "internal error: '[' should be classified as operator");
1690 else if (parser->tok == ')') {
1692 DEBUGSHUNTDO(con_out("do[op] )\n"));
1696 /* we do expect an operator next */
1697 /* closing an opening paren */
1698 if (!parser_close_paren(parser, &sy, false))
1700 if (vec_last(parser->pot) != POT_PAREN) {
1701 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1704 vec_pop(parser->pot);
1706 DEBUGSHUNTDO(con_out("do[nop] )\n"));
1710 /* allowed for function calls */
1711 if (!parser_close_paren(parser, &sy, true))
1713 if (vec_last(parser->pot) != POT_PAREN) {
1714 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1717 vec_pop(parser->pot);
1721 else if (parser->tok == ']') {
1723 parseerror(parser, "operand expected");
1727 if (!parser_close_paren(parser, &sy, false))
1729 if (vec_last(parser->pot) != POT_PAREN) {
1730 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1733 vec_pop(parser->pot);
1736 else if (parser->tok == TOKEN_TYPENAME) {
1737 parseerror(parser, "unexpected typename");
1740 else if (parser->tok != TOKEN_OPERATOR) {
1742 parseerror(parser, "expected operator or end of statement");
1749 /* classify the operator */
1750 const oper_info *op;
1751 const oper_info *olast = NULL;
1753 for (o = 0; o < operator_count; ++o) {
1754 if (((!(operators[o].flags & OP_PREFIX) == !!wantop)) &&
1755 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1756 !strcmp(parser_tokval(parser), operators[o].op))
1761 if (o == operator_count) {
1762 /* no operator found... must be the end of the statement */
1765 /* found an operator */
1768 /* when declaring variables, a comma starts a new variable */
1769 if (op->id == opid1(',') && !parens && stopatcomma) {
1770 /* fixup the token */
1775 /* a colon without a pervious question mark cannot be a ternary */
1776 if (!ternaries && op->id == opid2(':','?')) {
1781 if (op->id == opid1(',')) {
1782 if (vec_size(parser->pot) && vec_last(parser->pot) == POT_TERNARY2) {
1783 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
1787 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1788 olast = &operators[vec_last(sy.ops).etype-1];
1790 #define IsAssignOp(x) (\
1791 (x) == opid1('=') || \
1792 (x) == opid2('+','=') || \
1793 (x) == opid2('-','=') || \
1794 (x) == opid2('*','=') || \
1795 (x) == opid2('/','=') || \
1796 (x) == opid2('%','=') || \
1797 (x) == opid2('&','=') || \
1798 (x) == opid2('|','=') || \
1799 (x) == opid3('&','~','=') \
1801 if (warn_truthvalue) {
1802 if ( (olast && IsAssignOp(olast->id) && (op->id == opid2('&','&') || op->id == opid2('|','|'))) ||
1803 (olast && IsAssignOp(op->id) && (olast->id == opid2('&','&') || olast->id == opid2('|','|'))) ||
1804 (truthvalue && !vec_size(parser->pot) && IsAssignOp(op->id))
1807 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around assignment used as truth value");
1808 warn_truthvalue = false;
1813 (op->prec < olast->prec) ||
1814 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1816 if (!parser_sy_apply_operator(parser, &sy))
1818 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1819 olast = &operators[vec_last(sy.ops).etype-1];
1824 if (op->id == opid1('.') && opts.standard == COMPILER_GMQCC) {
1825 /* for gmqcc standard: open up the namespace of the previous type */
1826 ast_expression *prevex = vec_last(sy.out).out;
1828 parseerror(parser, "unexpected member operator");
1831 if (prevex->expression.vtype == TYPE_ENTITY)
1832 parser->memberof = TYPE_ENTITY;
1833 else if (prevex->expression.vtype == TYPE_VECTOR)
1834 parser->memberof = TYPE_VECTOR;
1836 parseerror(parser, "type error: type has no members");
1842 if (op->id == opid1('(')) {
1844 size_t sycount = vec_size(sy.out);
1845 DEBUGSHUNTDO(con_out("push [op] (\n"));
1846 ++parens; vec_push(parser->pot, POT_PAREN);
1847 /* we expected an operator, this is the function-call operator */
1848 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_FUNC, sycount-1));
1850 ++parens; vec_push(parser->pot, POT_PAREN);
1851 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_EXPR, 0));
1852 DEBUGSHUNTDO(con_out("push [nop] (\n"));
1855 } else if (op->id == opid1('[')) {
1857 parseerror(parser, "unexpected array subscript");
1860 ++parens; vec_push(parser->pot, POT_PAREN);
1861 /* push both the operator and the paren, this makes life easier */
1862 vec_push(sy.ops, syop(parser_ctx(parser), op));
1863 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_INDEX, 0));
1865 } else if (op->id == opid2('?',':')) {
1866 vec_push(sy.ops, syop(parser_ctx(parser), op));
1867 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_TERNARY, 0));
1870 vec_push(parser->pot, POT_TERNARY1);
1871 } else if (op->id == opid2(':','?')) {
1872 if (!vec_size(parser->pot)) {
1873 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1876 if (vec_last(parser->pot) != POT_TERNARY1) {
1877 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1880 if (!parser_close_paren(parser, &sy, false))
1882 vec_push(sy.ops, syop(parser_ctx(parser), op));
1886 DEBUGSHUNTDO(con_out("push operator %s\n", op->op));
1887 vec_push(sy.ops, syop(parser_ctx(parser), op));
1888 wantop = !!(op->flags & OP_SUFFIX);
1891 if (!parser_next(parser)) {
1894 if (parser->tok == ';' ||
1895 (!parens && parser->tok == ']'))
1901 while (vec_size(sy.ops)) {
1902 if (!parser_sy_apply_operator(parser, &sy))
1906 parser->lex->flags.noops = true;
1907 if (!vec_size(sy.out)) {
1908 parseerror(parser, "empty expression");
1911 expr = sy.out[0].out;
1914 DEBUGSHUNTDO(con_out("shunt done\n"));
1915 if (vec_size(parser->pot)) {
1916 parseerror(parser, "internal error: vec_size(parser->pot) = %lu", (unsigned long)vec_size(parser->pot));
1919 vec_free(parser->pot);
1923 parser->lex->flags.noops = true;
1929 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma)
1931 ast_expression *e = parse_expression_leave(parser, stopatcomma, false);
1934 if (!parser_next(parser)) {
1941 static void parser_enterblock(parser_t *parser)
1943 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
1944 vec_push(parser->_blocklocals, vec_size(parser->_locals));
1945 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
1946 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
1947 vec_push(parser->_block_ctx, parser_ctx(parser));
1950 static bool parser_leaveblock(parser_t *parser)
1953 size_t locals, typedefs;
1955 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
1956 parseerror(parser, "internal error: parser_leaveblock with no block");
1960 util_htdel(vec_last(parser->variables));
1961 vec_pop(parser->variables);
1962 if (!vec_size(parser->_blocklocals)) {
1963 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
1967 locals = vec_last(parser->_blocklocals);
1968 vec_pop(parser->_blocklocals);
1969 while (vec_size(parser->_locals) != locals) {
1970 ast_expression *e = vec_last(parser->_locals);
1971 ast_value *v = (ast_value*)e;
1972 vec_pop(parser->_locals);
1973 if (ast_istype(e, ast_value) && !v->uses) {
1974 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name))
1979 typedefs = vec_last(parser->_blocktypedefs);
1980 while (vec_size(parser->_typedefs) != typedefs) {
1981 ast_delete(vec_last(parser->_typedefs));
1982 vec_pop(parser->_typedefs);
1984 util_htdel(vec_last(parser->typedefs));
1985 vec_pop(parser->typedefs);
1987 vec_pop(parser->_block_ctx);
1991 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
1993 vec_push(parser->_locals, e);
1994 util_htset(vec_last(parser->variables), name, (void*)e);
1997 static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
2001 ast_expression *prev;
2003 if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->expression.vtype == TYPE_STRING)
2006 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
2009 parseerror(parser, "internal error: failed to process condition");
2014 else if (OPTS_FLAG(CORRECT_LOGIC) && cond->expression.vtype == TYPE_VECTOR)
2016 /* vector types need to be cast to true booleans */
2017 ast_binary *bin = (ast_binary*)cond;
2018 if (!OPTS_FLAG(PERL_LOGIC) || !ast_istype(cond, ast_binary) || !(bin->op == INSTR_AND || bin->op == INSTR_OR))
2020 /* in perl-logic, AND and OR take care of the -fcorrect-logic */
2022 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_V, cond);
2025 parseerror(parser, "internal error: failed to process condition");
2032 unary = (ast_unary*)cond;
2033 while (ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F)
2035 cond = unary->operand;
2036 unary->operand = NULL;
2039 unary = (ast_unary*)cond;
2043 parseerror(parser, "internal error: failed to process condition");
2045 if (ifnot) *_ifnot = !*_ifnot;
2049 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
2052 ast_expression *cond, *ontrue = NULL, *onfalse = NULL;
2055 lex_ctx ctx = parser_ctx(parser);
2057 (void)block; /* not touching */
2059 /* skip the 'if', parse an optional 'not' and check for an opening paren */
2060 if (!parser_next(parser)) {
2061 parseerror(parser, "expected condition or 'not'");
2064 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
2066 if (!parser_next(parser)) {
2067 parseerror(parser, "expected condition in parenthesis");
2071 if (parser->tok != '(') {
2072 parseerror(parser, "expected 'if' condition in parenthesis");
2075 /* parse into the expression */
2076 if (!parser_next(parser)) {
2077 parseerror(parser, "expected 'if' condition after opening paren");
2080 /* parse the condition */
2081 cond = parse_expression_leave(parser, false, true);
2085 if (parser->tok != ')') {
2086 parseerror(parser, "expected closing paren after 'if' condition");
2090 /* parse into the 'then' branch */
2091 if (!parser_next(parser)) {
2092 parseerror(parser, "expected statement for on-true branch of 'if'");
2096 if (!parse_statement_or_block(parser, &ontrue)) {
2100 /* check for an else */
2101 if (!strcmp(parser_tokval(parser), "else")) {
2102 /* parse into the 'else' branch */
2103 if (!parser_next(parser)) {
2104 parseerror(parser, "expected on-false branch after 'else'");
2109 if (!parse_statement_or_block(parser, &onfalse)) {
2116 cond = process_condition(parser, cond, &ifnot);
2118 if (ontrue) ast_delete(ontrue);
2119 if (onfalse) ast_delete(onfalse);
2124 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
2126 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
2127 *out = (ast_expression*)ifthen;
2131 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out);
2132 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
2137 /* skip the 'while' and get the body */
2138 if (!parser_next(parser)) {
2139 if (OPTS_FLAG(LOOP_LABELS))
2140 parseerror(parser, "expected loop label or 'while' condition in parenthesis");
2142 parseerror(parser, "expected 'while' condition in parenthesis");
2146 if (parser->tok == ':') {
2147 if (!OPTS_FLAG(LOOP_LABELS))
2148 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2149 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2150 parseerror(parser, "expected loop label");
2153 label = util_strdup(parser_tokval(parser));
2154 if (!parser_next(parser)) {
2156 parseerror(parser, "expected 'while' condition in parenthesis");
2161 if (parser->tok != '(') {
2162 parseerror(parser, "expected 'while' condition in parenthesis");
2166 vec_push(parser->breaks, label);
2167 vec_push(parser->continues, label);
2169 rv = parse_while_go(parser, block, out);
2172 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2173 parseerror(parser, "internal error: label stack corrupted");
2179 vec_pop(parser->breaks);
2180 vec_pop(parser->continues);
2185 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out)
2188 ast_expression *cond, *ontrue;
2192 lex_ctx ctx = parser_ctx(parser);
2194 (void)block; /* not touching */
2196 /* parse into the expression */
2197 if (!parser_next(parser)) {
2198 parseerror(parser, "expected 'while' condition after opening paren");
2201 /* parse the condition */
2202 cond = parse_expression_leave(parser, false, true);
2206 if (parser->tok != ')') {
2207 parseerror(parser, "expected closing paren after 'while' condition");
2211 /* parse into the 'then' branch */
2212 if (!parser_next(parser)) {
2213 parseerror(parser, "expected while-loop body");
2217 if (!parse_statement_or_block(parser, &ontrue)) {
2222 cond = process_condition(parser, cond, &ifnot);
2227 aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue);
2228 *out = (ast_expression*)aloop;
2232 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out);
2233 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2238 /* skip the 'do' and get the body */
2239 if (!parser_next(parser)) {
2240 if (OPTS_FLAG(LOOP_LABELS))
2241 parseerror(parser, "expected loop label or body");
2243 parseerror(parser, "expected loop body");
2247 if (parser->tok == ':') {
2248 if (!OPTS_FLAG(LOOP_LABELS))
2249 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2250 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2251 parseerror(parser, "expected loop label");
2254 label = util_strdup(parser_tokval(parser));
2255 if (!parser_next(parser)) {
2257 parseerror(parser, "expected loop body");
2262 vec_push(parser->breaks, label);
2263 vec_push(parser->continues, label);
2265 rv = parse_dowhile_go(parser, block, out);
2268 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2269 parseerror(parser, "internal error: label stack corrupted");
2275 vec_pop(parser->breaks);
2276 vec_pop(parser->continues);
2281 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out)
2284 ast_expression *cond, *ontrue;
2288 lex_ctx ctx = parser_ctx(parser);
2290 (void)block; /* not touching */
2292 if (!parse_statement_or_block(parser, &ontrue))
2295 /* expect the "while" */
2296 if (parser->tok != TOKEN_KEYWORD ||
2297 strcmp(parser_tokval(parser), "while"))
2299 parseerror(parser, "expected 'while' and condition");
2304 /* skip the 'while' and check for opening paren */
2305 if (!parser_next(parser) || parser->tok != '(') {
2306 parseerror(parser, "expected 'while' condition in parenthesis");
2310 /* parse into the expression */
2311 if (!parser_next(parser)) {
2312 parseerror(parser, "expected 'while' condition after opening paren");
2316 /* parse the condition */
2317 cond = parse_expression_leave(parser, false, true);
2321 if (parser->tok != ')') {
2322 parseerror(parser, "expected closing paren after 'while' condition");
2328 if (!parser_next(parser) || parser->tok != ';') {
2329 parseerror(parser, "expected semicolon after condition");
2335 if (!parser_next(parser)) {
2336 parseerror(parser, "parse error");
2342 cond = process_condition(parser, cond, &ifnot);
2347 aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue);
2348 *out = (ast_expression*)aloop;
2352 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out);
2353 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2358 /* skip the 'for' and check for opening paren */
2359 if (!parser_next(parser)) {
2360 if (OPTS_FLAG(LOOP_LABELS))
2361 parseerror(parser, "expected loop label or 'for' expressions in parenthesis");
2363 parseerror(parser, "expected 'for' expressions in parenthesis");
2367 if (parser->tok == ':') {
2368 if (!OPTS_FLAG(LOOP_LABELS))
2369 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2370 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2371 parseerror(parser, "expected loop label");
2374 label = util_strdup(parser_tokval(parser));
2375 if (!parser_next(parser)) {
2377 parseerror(parser, "expected 'for' expressions in parenthesis");
2382 if (parser->tok != '(') {
2383 parseerror(parser, "expected 'for' expressions in parenthesis");
2387 vec_push(parser->breaks, label);
2388 vec_push(parser->continues, label);
2390 rv = parse_for_go(parser, block, out);
2393 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2394 parseerror(parser, "internal error: label stack corrupted");
2400 vec_pop(parser->breaks);
2401 vec_pop(parser->continues);
2405 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out)
2408 ast_expression *initexpr, *cond, *increment, *ontrue;
2414 lex_ctx ctx = parser_ctx(parser);
2416 parser_enterblock(parser);
2423 /* parse into the expression */
2424 if (!parser_next(parser)) {
2425 parseerror(parser, "expected 'for' initializer after opening paren");
2430 if (parser->tok == TOKEN_IDENT)
2431 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2433 if (typevar || parser->tok == TOKEN_TYPENAME) {
2434 if (opts.standard != COMPILER_GMQCC) {
2435 if (parsewarning(parser, WARN_EXTENSIONS,
2436 "current standard does not allow variable declarations in for-loop initializers"))
2439 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false, 0, NULL))
2442 else if (parser->tok != ';')
2444 initexpr = parse_expression_leave(parser, false, false);
2449 /* move on to condition */
2450 if (parser->tok != ';') {
2451 parseerror(parser, "expected semicolon after for-loop initializer");
2454 if (!parser_next(parser)) {
2455 parseerror(parser, "expected for-loop condition");
2459 /* parse the condition */
2460 if (parser->tok != ';') {
2461 cond = parse_expression_leave(parser, false, true);
2466 /* move on to incrementor */
2467 if (parser->tok != ';') {
2468 parseerror(parser, "expected semicolon after for-loop initializer");
2471 if (!parser_next(parser)) {
2472 parseerror(parser, "expected for-loop condition");
2476 /* parse the incrementor */
2477 if (parser->tok != ')') {
2478 increment = parse_expression_leave(parser, false, false);
2481 if (!ast_side_effects(increment)) {
2482 if (genwarning(ast_ctx(increment), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2488 if (parser->tok != ')') {
2489 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2492 /* parse into the 'then' branch */
2493 if (!parser_next(parser)) {
2494 parseerror(parser, "expected for-loop body");
2497 if (!parse_statement_or_block(parser, &ontrue))
2501 cond = process_condition(parser, cond, &ifnot);
2505 aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue);
2506 *out = (ast_expression*)aloop;
2508 if (!parser_leaveblock(parser))
2512 if (initexpr) ast_delete(initexpr);
2513 if (cond) ast_delete(cond);
2514 if (increment) ast_delete(increment);
2515 (void)!parser_leaveblock(parser);
2519 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2521 ast_expression *exp = NULL;
2522 ast_return *ret = NULL;
2523 ast_value *expected = parser->function->vtype;
2525 lex_ctx ctx = parser_ctx(parser);
2527 (void)block; /* not touching */
2529 if (!parser_next(parser)) {
2530 parseerror(parser, "expected return expression");
2534 if (parser->tok != ';') {
2535 exp = parse_expression(parser, false);
2539 if (exp->expression.vtype != expected->expression.next->expression.vtype) {
2540 parseerror(parser, "return with invalid expression");
2543 ret = ast_return_new(ctx, exp);
2549 if (!parser_next(parser))
2550 parseerror(parser, "parse error");
2551 if (expected->expression.next->expression.vtype != TYPE_VOID) {
2552 if (opts.standard != COMPILER_GMQCC)
2553 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2555 parseerror(parser, "return without value");
2557 ret = ast_return_new(ctx, NULL);
2559 *out = (ast_expression*)ret;
2563 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2566 unsigned int levels = 0;
2567 lex_ctx ctx = parser_ctx(parser);
2568 const char **loops = (is_continue ? parser->continues : parser->breaks);
2570 (void)block; /* not touching */
2571 if (!parser_next(parser)) {
2572 parseerror(parser, "expected semicolon or loop label");
2576 if (parser->tok == TOKEN_IDENT) {
2577 if (!OPTS_FLAG(LOOP_LABELS))
2578 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2579 i = vec_size(loops);
2581 if (loops[i] && !strcmp(loops[i], parser_tokval(parser)))
2584 parseerror(parser, "no such loop to %s: `%s`",
2585 (is_continue ? "continue" : "break out of"),
2586 parser_tokval(parser));
2591 if (!parser_next(parser)) {
2592 parseerror(parser, "expected semicolon");
2597 if (parser->tok != ';') {
2598 parseerror(parser, "expected semicolon");
2602 if (!parser_next(parser))
2603 parseerror(parser, "parse error");
2605 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue, levels);
2609 /* returns true when it was a variable qualifier, false otherwise!
2610 * on error, cvq is set to CV_WRONG
2612 static bool parse_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *is_static, uint32_t *_flags, char **message)
2614 bool had_const = false;
2615 bool had_var = false;
2616 bool had_noref = false;
2617 bool had_attrib = false;
2618 bool had_static = false;
2623 if (parser->tok == TOKEN_ATTRIBUTE_OPEN) {
2625 /* parse an attribute */
2626 if (!parser_next(parser)) {
2627 parseerror(parser, "expected attribute after `[[`");
2631 if (!strcmp(parser_tokval(parser), "noreturn")) {
2632 flags |= AST_FLAG_NORETURN;
2633 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2634 parseerror(parser, "`noreturn` attribute has no parameters, expected `]]`");
2639 else if (!strcmp(parser_tokval(parser), "noref")) {
2641 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2642 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2647 else if (!strcmp(parser_tokval(parser), "inline")) {
2648 flags |= AST_FLAG_INLINE;
2649 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2650 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2657 else if (!strcmp(parser_tokval(parser), "deprecated") && !(flags & AST_FLAG_DEPRECATED)) {
2658 flags |= AST_FLAG_DEPRECATED;
2661 if (!parser_next(parser)) {
2662 parseerror(parser, "parse error in attribute");
2666 if (parser->tok == '(') {
2667 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
2668 parseerror(parser, "`deprecated` attribute missing parameter");
2672 *message = util_strdup(parser_tokval(parser));
2674 if (!parser_next(parser)) {
2675 parseerror(parser, "parse error in attribute");
2679 if(parser->tok != ')') {
2680 parseerror(parser, "`deprecated` attribute expected `)` after parameter");
2684 if (!parser_next(parser)) {
2685 parseerror(parser, "parse error in attribute");
2690 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2691 parseerror(parser, "`deprecated` attribute expected `]]`");
2694 if (*message) mem_d(*message);
2702 /* Skip tokens until we hit a ]] */
2703 (void)!parsewarning(parser, WARN_UNKNOWN_ATTRIBUTE, "unknown attribute starting with `%s`", parser_tokval(parser));
2704 while (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2705 if (!parser_next(parser)) {
2706 parseerror(parser, "error inside attribute");
2713 else if (!strcmp(parser_tokval(parser), "static"))
2715 else if (!strcmp(parser_tokval(parser), "const"))
2717 else if (!strcmp(parser_tokval(parser), "var"))
2719 else if (with_local && !strcmp(parser_tokval(parser), "local"))
2721 else if (!strcmp(parser_tokval(parser), "noref"))
2723 else if (!had_const && !had_var && !had_noref && !had_attrib && !had_static && !flags) {
2728 if (!parser_next(parser))
2738 *is_static = had_static;
2742 parseerror(parser, "parse error after variable qualifier");
2747 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out);
2748 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
2753 /* skip the 'while' and get the body */
2754 if (!parser_next(parser)) {
2755 if (OPTS_FLAG(LOOP_LABELS))
2756 parseerror(parser, "expected loop label or 'switch' operand in parenthesis");
2758 parseerror(parser, "expected 'switch' operand in parenthesis");
2762 if (parser->tok == ':') {
2763 if (!OPTS_FLAG(LOOP_LABELS))
2764 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2765 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2766 parseerror(parser, "expected loop label");
2769 label = util_strdup(parser_tokval(parser));
2770 if (!parser_next(parser)) {
2772 parseerror(parser, "expected 'switch' operand in parenthesis");
2777 if (parser->tok != '(') {
2778 parseerror(parser, "expected 'switch' operand in parenthesis");
2782 vec_push(parser->breaks, label);
2784 rv = parse_switch_go(parser, block, out);
2787 if (vec_last(parser->breaks) != label) {
2788 parseerror(parser, "internal error: label stack corrupted");
2794 vec_pop(parser->breaks);
2799 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out)
2801 ast_expression *operand;
2804 ast_switch *switchnode;
2805 ast_switch_case swcase;
2808 bool noref, is_static;
2809 uint32_t qflags = 0;
2811 lex_ctx ctx = parser_ctx(parser);
2813 (void)block; /* not touching */
2816 /* parse into the expression */
2817 if (!parser_next(parser)) {
2818 parseerror(parser, "expected switch operand");
2821 /* parse the operand */
2822 operand = parse_expression_leave(parser, false, false);
2826 switchnode = ast_switch_new(ctx, operand);
2829 if (parser->tok != ')') {
2830 ast_delete(switchnode);
2831 parseerror(parser, "expected closing paren after 'switch' operand");
2835 /* parse over the opening paren */
2836 if (!parser_next(parser) || parser->tok != '{') {
2837 ast_delete(switchnode);
2838 parseerror(parser, "expected list of cases");
2842 if (!parser_next(parser)) {
2843 ast_delete(switchnode);
2844 parseerror(parser, "expected 'case' or 'default'");
2848 /* new block; allow some variables to be declared here */
2849 parser_enterblock(parser);
2852 if (parser->tok == TOKEN_IDENT)
2853 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2854 if (typevar || parser->tok == TOKEN_TYPENAME) {
2855 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL)) {
2856 ast_delete(switchnode);
2861 if (parse_qualifiers(parser, true, &cvq, &noref, &is_static, &qflags, NULL))
2863 if (cvq == CV_WRONG) {
2864 ast_delete(switchnode);
2867 if (!parse_variable(parser, block, false, cvq, NULL, noref, is_static, qflags, NULL)) {
2868 ast_delete(switchnode);
2877 while (parser->tok != '}') {
2878 ast_block *caseblock;
2880 if (!strcmp(parser_tokval(parser), "case")) {
2881 if (!parser_next(parser)) {
2882 ast_delete(switchnode);
2883 parseerror(parser, "expected expression for case");
2886 swcase.value = parse_expression_leave(parser, false, false);
2887 if (!swcase.value) {
2888 ast_delete(switchnode);
2889 parseerror(parser, "expected expression for case");
2892 if (!OPTS_FLAG(RELAXED_SWITCH)) {
2893 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
2894 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
2900 else if (!strcmp(parser_tokval(parser), "default")) {
2901 swcase.value = NULL;
2902 if (!parser_next(parser)) {
2903 ast_delete(switchnode);
2904 parseerror(parser, "expected colon");
2909 ast_delete(switchnode);
2910 parseerror(parser, "expected 'case' or 'default'");
2914 /* Now the colon and body */
2915 if (parser->tok != ':') {
2916 if (swcase.value) ast_unref(swcase.value);
2917 ast_delete(switchnode);
2918 parseerror(parser, "expected colon");
2922 if (!parser_next(parser)) {
2923 if (swcase.value) ast_unref(swcase.value);
2924 ast_delete(switchnode);
2925 parseerror(parser, "expected statements or case");
2928 caseblock = ast_block_new(parser_ctx(parser));
2930 if (swcase.value) ast_unref(swcase.value);
2931 ast_delete(switchnode);
2934 swcase.code = (ast_expression*)caseblock;
2935 vec_push(switchnode->cases, swcase);
2937 ast_expression *expr;
2938 if (parser->tok == '}')
2940 if (parser->tok == TOKEN_KEYWORD) {
2941 if (!strcmp(parser_tokval(parser), "case") ||
2942 !strcmp(parser_tokval(parser), "default"))
2947 if (!parse_statement(parser, caseblock, &expr, true)) {
2948 ast_delete(switchnode);
2953 if (!ast_block_add_expr(caseblock, expr)) {
2954 ast_delete(switchnode);
2960 parser_leaveblock(parser);
2963 if (parser->tok != '}') {
2964 ast_delete(switchnode);
2965 parseerror(parser, "expected closing paren of case list");
2968 if (!parser_next(parser)) {
2969 ast_delete(switchnode);
2970 parseerror(parser, "parse error after switch");
2973 *out = (ast_expression*)switchnode;
2977 static bool parse_goto(parser_t *parser, ast_expression **out)
2982 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2983 parseerror(parser, "expected label name after `goto`");
2987 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
2989 for (i = 0; i < vec_size(parser->labels); ++i) {
2990 if (!strcmp(parser->labels[i]->name, parser_tokval(parser))) {
2991 ast_goto_set_label(gt, parser->labels[i]);
2995 if (i == vec_size(parser->labels))
2996 vec_push(parser->gotos, gt);
2998 if (!parser_next(parser) || parser->tok != ';') {
2999 parseerror(parser, "semicolon expected after goto label");
3002 if (!parser_next(parser)) {
3003 parseerror(parser, "parse error after goto");
3007 *out = (ast_expression*)gt;
3011 static bool parse_skipwhite(parser_t *parser)
3014 if (!parser_next(parser))
3016 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
3017 return parser->tok < TOKEN_ERROR;
3020 static bool parse_eol(parser_t *parser)
3022 if (!parse_skipwhite(parser))
3024 return parser->tok == TOKEN_EOL;
3027 static bool parse_pragma_do(parser_t *parser)
3029 if (!parser_next(parser) ||
3030 parser->tok != TOKEN_IDENT ||
3031 strcmp(parser_tokval(parser), "pragma"))
3033 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
3036 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
3037 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
3041 if (!strcmp(parser_tokval(parser), "noref")) {
3042 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
3043 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
3046 parser->noref = !!parser_token(parser)->constval.i;
3047 if (!parse_eol(parser)) {
3048 parseerror(parser, "parse error after `noref` pragma");
3054 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
3061 static bool parse_pragma(parser_t *parser)
3064 parser->lex->flags.preprocessing = true;
3065 parser->lex->flags.mergelines = true;
3066 rv = parse_pragma_do(parser);
3067 if (parser->tok != TOKEN_EOL) {
3068 parseerror(parser, "junk after pragma");
3071 parser->lex->flags.preprocessing = false;
3072 parser->lex->flags.mergelines = false;
3073 if (!parser_next(parser)) {
3074 parseerror(parser, "parse error after pragma");
3080 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
3082 bool noref, is_static;
3084 uint32_t qflags = 0;
3085 ast_value *typevar = NULL;
3086 char *vstring = NULL;
3090 if (parser->tok == TOKEN_IDENT)
3091 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3093 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
3095 /* local variable */
3097 parseerror(parser, "cannot declare a variable from here");
3100 if (opts.standard == COMPILER_QCC) {
3101 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
3104 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL))
3108 else if (parse_qualifiers(parser, !!block, &cvq, &noref, &is_static, &qflags, &vstring))
3110 if (cvq == CV_WRONG)
3112 return parse_variable(parser, block, true, cvq, NULL, noref, is_static, qflags, vstring);
3114 else if (parser->tok == TOKEN_KEYWORD)
3116 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
3121 if (!parser_next(parser)) {
3122 parseerror(parser, "parse error after __builtin_debug_printtype");
3126 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
3128 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
3129 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
3130 if (!parser_next(parser)) {
3131 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
3137 if (!parse_statement(parser, block, out, allow_cases))
3140 con_out("__builtin_debug_printtype: got no output node\n");
3143 ast_type_to_string(*out, ty, sizeof(ty));
3144 con_out("__builtin_debug_printtype: `%s`\n", ty);
3149 else if (!strcmp(parser_tokval(parser), "return"))
3151 return parse_return(parser, block, out);
3153 else if (!strcmp(parser_tokval(parser), "if"))
3155 return parse_if(parser, block, out);
3157 else if (!strcmp(parser_tokval(parser), "while"))
3159 return parse_while(parser, block, out);
3161 else if (!strcmp(parser_tokval(parser), "do"))
3163 return parse_dowhile(parser, block, out);
3165 else if (!strcmp(parser_tokval(parser), "for"))
3167 if (opts.standard == COMPILER_QCC) {
3168 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
3171 return parse_for(parser, block, out);
3173 else if (!strcmp(parser_tokval(parser), "break"))
3175 return parse_break_continue(parser, block, out, false);
3177 else if (!strcmp(parser_tokval(parser), "continue"))
3179 return parse_break_continue(parser, block, out, true);
3181 else if (!strcmp(parser_tokval(parser), "switch"))
3183 return parse_switch(parser, block, out);
3185 else if (!strcmp(parser_tokval(parser), "case") ||
3186 !strcmp(parser_tokval(parser), "default"))
3189 parseerror(parser, "unexpected 'case' label");
3194 else if (!strcmp(parser_tokval(parser), "goto"))
3196 return parse_goto(parser, out);
3198 else if (!strcmp(parser_tokval(parser), "typedef"))
3200 if (!parser_next(parser)) {
3201 parseerror(parser, "expected type definition after 'typedef'");
3204 return parse_typedef(parser);
3206 parseerror(parser, "Unexpected keyword");
3209 else if (parser->tok == '{')
3212 inner = parse_block(parser);
3215 *out = (ast_expression*)inner;
3218 else if (parser->tok == ':')
3222 if (!parser_next(parser)) {
3223 parseerror(parser, "expected label name");
3226 if (parser->tok != TOKEN_IDENT) {
3227 parseerror(parser, "label must be an identifier");
3230 label = ast_label_new(parser_ctx(parser), parser_tokval(parser));
3233 vec_push(parser->labels, label);
3234 *out = (ast_expression*)label;
3235 if (!parser_next(parser)) {
3236 parseerror(parser, "parse error after label");
3239 for (i = 0; i < vec_size(parser->gotos); ++i) {
3240 if (!strcmp(parser->gotos[i]->name, label->name)) {
3241 ast_goto_set_label(parser->gotos[i], label);
3242 vec_remove(parser->gotos, i, 1);
3248 else if (parser->tok == ';')
3250 if (!parser_next(parser)) {
3251 parseerror(parser, "parse error after empty statement");
3258 ast_expression *exp = parse_expression(parser, false);
3262 if (!ast_side_effects(exp)) {
3263 if (genwarning(ast_ctx(exp), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
3270 static bool parse_block_into(parser_t *parser, ast_block *block)
3274 parser_enterblock(parser);
3276 if (!parser_next(parser)) { /* skip the '{' */
3277 parseerror(parser, "expected function body");
3281 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
3283 ast_expression *expr = NULL;
3284 if (parser->tok == '}')
3287 if (!parse_statement(parser, block, &expr, false)) {
3288 /* parseerror(parser, "parse error"); */
3294 if (!ast_block_add_expr(block, expr)) {
3301 if (parser->tok != '}') {
3304 (void)parser_next(parser);
3308 if (!parser_leaveblock(parser))
3310 return retval && !!block;
3313 static ast_block* parse_block(parser_t *parser)
3316 block = ast_block_new(parser_ctx(parser));
3319 if (!parse_block_into(parser, block)) {
3320 ast_block_delete(block);
3326 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
3328 if (parser->tok == '{') {
3329 *out = (ast_expression*)parse_block(parser);
3332 return parse_statement(parser, NULL, out, false);
3335 static bool create_vector_members(ast_value *var, ast_member **me)
3338 size_t len = strlen(var->name);
3340 for (i = 0; i < 3; ++i) {
3341 char *name = (char*)mem_a(len+3);
3342 memcpy(name, var->name, len);
3344 name[len+1] = 'x'+i;
3346 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
3355 do { ast_member_delete(me[--i]); } while(i);
3359 static bool parse_function_body(parser_t *parser, ast_value *var)
3361 ast_block *block = NULL;
3366 ast_expression *framenum = NULL;
3367 ast_expression *nextthink = NULL;
3368 /* None of the following have to be deleted */
3369 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
3370 ast_expression *gbl_time = NULL, *gbl_self = NULL;
3371 bool has_frame_think;
3375 has_frame_think = false;
3376 old = parser->function;
3378 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
3379 parseerror(parser, "gotos/labels leaking");
3383 if (var->expression.flags & AST_FLAG_VARIADIC) {
3384 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
3385 "variadic function with implementation will not be able to access additional parameters"))
3391 if (parser->tok == '[') {
3392 /* got a frame definition: [ framenum, nextthink ]
3393 * this translates to:
3394 * self.frame = framenum;
3395 * self.nextthink = time + 0.1;
3396 * self.think = nextthink;
3400 fld_think = parser_find_field(parser, "think");
3401 fld_nextthink = parser_find_field(parser, "nextthink");
3402 fld_frame = parser_find_field(parser, "frame");
3403 if (!fld_think || !fld_nextthink || !fld_frame) {
3404 parseerror(parser, "cannot use [frame,think] notation without the required fields");
3405 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
3408 gbl_time = parser_find_global(parser, "time");
3409 gbl_self = parser_find_global(parser, "self");
3410 if (!gbl_time || !gbl_self) {
3411 parseerror(parser, "cannot use [frame,think] notation without the required globals");
3412 parseerror(parser, "please declare the following globals: `time`, `self`");
3416 if (!parser_next(parser))
3419 framenum = parse_expression_leave(parser, true, false);
3421 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
3424 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
3425 ast_unref(framenum);
3426 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
3430 if (parser->tok != ',') {
3431 ast_unref(framenum);
3432 parseerror(parser, "expected comma after frame number in [frame,think] notation");
3433 parseerror(parser, "Got a %i\n", parser->tok);
3437 if (!parser_next(parser)) {
3438 ast_unref(framenum);
3442 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
3444 /* qc allows the use of not-yet-declared functions here
3445 * - this automatically creates a prototype */
3446 ast_value *thinkfunc;
3447 ast_expression *functype = fld_think->expression.next;
3449 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
3450 if (!thinkfunc || !ast_type_adopt(thinkfunc, functype)) {
3451 ast_unref(framenum);
3452 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
3456 if (!parser_next(parser)) {
3457 ast_unref(framenum);
3458 ast_delete(thinkfunc);
3462 vec_push(parser->globals, (ast_expression*)thinkfunc);
3463 util_htset(parser->htglobals, thinkfunc->name, thinkfunc);
3464 nextthink = (ast_expression*)thinkfunc;
3467 nextthink = parse_expression_leave(parser, true, false);
3469 ast_unref(framenum);
3470 parseerror(parser, "expected a think-function in [frame,think] notation");
3475 if (!ast_istype(nextthink, ast_value)) {
3476 parseerror(parser, "think-function in [frame,think] notation must be a constant");
3480 if (retval && parser->tok != ']') {
3481 parseerror(parser, "expected closing `]` for [frame,think] notation");
3485 if (retval && !parser_next(parser)) {
3489 if (retval && parser->tok != '{') {
3490 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
3495 ast_unref(nextthink);
3496 ast_unref(framenum);
3500 has_frame_think = true;
3503 block = ast_block_new(parser_ctx(parser));
3505 parseerror(parser, "failed to allocate block");
3506 if (has_frame_think) {
3507 ast_unref(nextthink);
3508 ast_unref(framenum);
3513 if (has_frame_think) {
3515 ast_expression *self_frame;
3516 ast_expression *self_nextthink;
3517 ast_expression *self_think;
3518 ast_expression *time_plus_1;
3519 ast_store *store_frame;
3520 ast_store *store_nextthink;
3521 ast_store *store_think;
3523 ctx = parser_ctx(parser);
3524 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
3525 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
3526 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
3528 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
3529 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
3531 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
3532 if (self_frame) ast_delete(self_frame);
3533 if (self_nextthink) ast_delete(self_nextthink);
3534 if (self_think) ast_delete(self_think);
3535 if (time_plus_1) ast_delete(time_plus_1);
3541 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
3542 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
3543 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
3546 ast_delete(self_frame);
3549 if (!store_nextthink) {
3550 ast_delete(self_nextthink);
3554 ast_delete(self_think);
3558 if (store_frame) ast_delete(store_frame);
3559 if (store_nextthink) ast_delete(store_nextthink);
3560 if (store_think) ast_delete(store_think);
3563 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
3564 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
3565 !ast_block_add_expr(block, (ast_expression*)store_think))
3572 parseerror(parser, "failed to generate code for [frame,think]");
3573 ast_unref(nextthink);
3574 ast_unref(framenum);
3580 parser_enterblock(parser);
3582 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
3584 ast_value *param = var->expression.params[parami];
3587 if (param->expression.vtype != TYPE_VECTOR &&
3588 (param->expression.vtype != TYPE_FIELD ||
3589 param->expression.next->expression.vtype != TYPE_VECTOR))
3594 if (!create_vector_members(param, me)) {
3595 ast_block_delete(block);
3599 for (e = 0; e < 3; ++e) {
3600 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
3601 ast_block_collect(block, (ast_expression*)me[e]);
3605 func = ast_function_new(ast_ctx(var), var->name, var);
3607 parseerror(parser, "failed to allocate function for `%s`", var->name);
3608 ast_block_delete(block);
3611 vec_push(parser->functions, func);
3613 parser->function = func;
3614 if (!parse_block_into(parser, block)) {
3615 ast_block_delete(block);
3619 vec_push(func->blocks, block);
3621 parser->function = old;
3622 if (!parser_leaveblock(parser))
3624 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
3625 parseerror(parser, "internal error: local scopes left");
3629 if (parser->tok == ';')
3630 return parser_next(parser);
3631 else if (opts.standard == COMPILER_QCC)
3632 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
3636 vec_pop(parser->functions);
3637 ast_function_delete(func);
3638 var->constval.vfunc = NULL;
3641 (void)!parser_leaveblock(parser);
3642 parser->function = old;
3646 static ast_expression *array_accessor_split(
3651 ast_expression *left,
3652 ast_expression *right
3658 lex_ctx ctx = ast_ctx(array);
3660 if (!left || !right) {
3661 if (left) ast_delete(left);
3662 if (right) ast_delete(right);
3666 cmp = ast_binary_new(ctx, INSTR_LT,
3667 (ast_expression*)index,
3668 (ast_expression*)parser_const_float(parser, middle));
3672 parseerror(parser, "internal error: failed to create comparison for array setter");
3676 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
3678 ast_delete(cmp); /* will delete left and right */
3679 parseerror(parser, "internal error: failed to create conditional jump for array setter");
3683 return (ast_expression*)ifthen;
3686 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
3688 lex_ctx ctx = ast_ctx(array);
3690 if (from+1 == afterend) {
3691 /* set this value */
3694 ast_array_index *subscript;
3696 int assignop = type_store_instr[value->expression.vtype];
3698 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3699 assignop = INSTR_STORE_V;
3701 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3705 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
3707 ast_delete(subscript);
3711 block = ast_block_new(ctx);
3717 if (!ast_block_add_expr(block, (ast_expression*)st)) {
3722 ret = ast_return_new(ctx, NULL);
3728 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
3733 return (ast_expression*)block;
3735 ast_expression *left, *right;
3736 size_t diff = afterend - from;
3737 size_t middle = from + diff/2;
3738 left = array_setter_node(parser, array, index, value, from, middle);
3739 right = array_setter_node(parser, array, index, value, middle, afterend);
3740 return array_accessor_split(parser, array, index, middle, left, right);
3744 static ast_expression *array_field_setter_node(
3753 lex_ctx ctx = ast_ctx(array);
3755 if (from+1 == afterend) {
3756 /* set this value */
3759 ast_entfield *entfield;
3760 ast_array_index *subscript;
3762 int assignop = type_storep_instr[value->expression.vtype];
3764 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3765 assignop = INSTR_STOREP_V;
3767 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3771 entfield = ast_entfield_new_force(ctx,
3772 (ast_expression*)entity,
3773 (ast_expression*)subscript,
3774 (ast_expression*)subscript);
3776 ast_delete(subscript);
3780 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
3782 ast_delete(entfield);
3786 block = ast_block_new(ctx);
3792 if (!ast_block_add_expr(block, (ast_expression*)st)) {
3797 ret = ast_return_new(ctx, NULL);
3803 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
3808 return (ast_expression*)block;
3810 ast_expression *left, *right;
3811 size_t diff = afterend - from;
3812 size_t middle = from + diff/2;
3813 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
3814 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
3815 return array_accessor_split(parser, array, index, middle, left, right);
3819 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
3821 lex_ctx ctx = ast_ctx(array);
3823 if (from+1 == afterend) {
3825 ast_array_index *subscript;
3827 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3831 ret = ast_return_new(ctx, (ast_expression*)subscript);
3833 ast_delete(subscript);
3837 return (ast_expression*)ret;
3839 ast_expression *left, *right;
3840 size_t diff = afterend - from;
3841 size_t middle = from + diff/2;
3842 left = array_getter_node(parser, array, index, from, middle);
3843 right = array_getter_node(parser, array, index, middle, afterend);
3844 return array_accessor_split(parser, array, index, middle, left, right);
3848 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
3850 ast_function *func = NULL;
3851 ast_value *fval = NULL;
3852 ast_block *body = NULL;
3854 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
3856 parseerror(parser, "failed to create accessor function value");
3860 func = ast_function_new(ast_ctx(array), funcname, fval);
3863 parseerror(parser, "failed to create accessor function node");
3867 body = ast_block_new(ast_ctx(array));
3869 parseerror(parser, "failed to create block for array accessor");
3875 vec_push(func->blocks, body);
3878 vec_push(parser->accessors, fval);
3883 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
3885 ast_expression *root = NULL;
3886 ast_value *index = NULL;
3887 ast_value *value = NULL;
3891 if (!ast_istype(array->expression.next, ast_value)) {
3892 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3896 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3898 func = fval->constval.vfunc;
3899 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
3901 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3902 value = ast_value_copy((ast_value*)array->expression.next);
3904 if (!index || !value) {
3905 parseerror(parser, "failed to create locals for array accessor");
3908 (void)!ast_value_set_name(value, "value"); /* not important */
3909 vec_push(fval->expression.params, index);
3910 vec_push(fval->expression.params, value);
3912 root = array_setter_node(parser, array, index, value, 0, array->expression.count);
3914 parseerror(parser, "failed to build accessor search tree");
3918 array->setter = fval;
3919 return ast_block_add_expr(func->blocks[0], root);
3921 if (index) ast_delete(index);
3922 if (value) ast_delete(value);
3923 if (root) ast_delete(root);
3929 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
3931 ast_expression *root = NULL;
3932 ast_value *entity = NULL;
3933 ast_value *index = NULL;
3934 ast_value *value = NULL;
3938 if (!ast_istype(array->expression.next, ast_value)) {
3939 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3943 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3945 func = fval->constval.vfunc;
3946 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
3948 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
3949 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3950 value = ast_value_copy((ast_value*)array->expression.next);
3951 if (!entity || !index || !value) {
3952 parseerror(parser, "failed to create locals for array accessor");
3955 (void)!ast_value_set_name(value, "value"); /* not important */
3956 vec_push(fval->expression.params, entity);
3957 vec_push(fval->expression.params, index);
3958 vec_push(fval->expression.params, value);
3960 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
3962 parseerror(parser, "failed to build accessor search tree");
3966 array->setter = fval;
3967 return ast_block_add_expr(func->blocks[0], root);
3969 if (entity) ast_delete(entity);
3970 if (index) ast_delete(index);
3971 if (value) ast_delete(value);
3972 if (root) ast_delete(root);
3978 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
3980 ast_expression *root = NULL;
3981 ast_value *index = NULL;
3985 /* NOTE: checking array->expression.next rather than elemtype since
3986 * for fields elemtype is a temporary fieldtype.
3988 if (!ast_istype(array->expression.next, ast_value)) {
3989 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3993 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3995 func = fval->constval.vfunc;
3996 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
3998 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4001 parseerror(parser, "failed to create locals for array accessor");
4004 vec_push(fval->expression.params, index);
4006 root = array_getter_node(parser, array, index, 0, array->expression.count);
4008 parseerror(parser, "failed to build accessor search tree");
4012 array->getter = fval;
4013 return ast_block_add_expr(func->blocks[0], root);
4015 if (index) ast_delete(index);
4016 if (root) ast_delete(root);
4022 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
4023 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
4031 bool variadic = false;
4033 ctx = parser_ctx(parser);
4035 /* for the sake of less code we parse-in in this function */
4036 if (!parser_next(parser)) {
4037 parseerror(parser, "expected parameter list");
4043 /* parse variables until we hit a closing paren */
4044 while (parser->tok != ')') {
4046 /* there must be commas between them */
4047 if (parser->tok != ',') {
4048 parseerror(parser, "expected comma or end of parameter list");
4051 if (!parser_next(parser)) {
4052 parseerror(parser, "expected parameter");
4058 if (parser->tok == TOKEN_DOTS) {
4059 /* '...' indicates a varargs function */
4061 if (!parser_next(parser)) {
4062 parseerror(parser, "expected parameter");
4065 if (parser->tok != ')') {
4066 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4072 /* for anything else just parse a typename */
4073 param = parse_typename(parser, NULL, NULL);
4076 vec_push(params, param);
4077 if (param->expression.vtype >= TYPE_VARIANT) {
4078 char tname[1024]; /* typename is reserved in C++ */
4079 ast_type_to_string((ast_expression*)param, tname, sizeof(tname));
4080 parseerror(parser, "type not supported as part of a parameter list: %s", tname);
4086 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
4090 if (vec_size(params) > 8 && opts.standard == COMPILER_QCC)
4091 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
4094 if (!parser_next(parser)) {
4095 parseerror(parser, "parse error after typename");
4099 /* now turn 'var' into a function type */
4100 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
4101 fval->expression.next = (ast_expression*)var;
4103 fval->expression.flags |= AST_FLAG_VARIADIC;
4106 var->expression.params = params;
4113 for (i = 0; i < vec_size(params); ++i)
4114 ast_delete(params[i]);
4119 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
4121 ast_expression *cexp;
4122 ast_value *cval, *tmp;
4125 ctx = parser_ctx(parser);
4127 if (!parser_next(parser)) {
4129 parseerror(parser, "expected array-size");
4133 cexp = parse_expression_leave(parser, true, false);
4135 if (!cexp || !ast_istype(cexp, ast_value)) {
4139 parseerror(parser, "expected array-size as constant positive integer");
4142 cval = (ast_value*)cexp;
4144 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
4145 tmp->expression.next = (ast_expression*)var;
4148 if (cval->expression.vtype == TYPE_INTEGER)
4149 tmp->expression.count = cval->constval.vint;
4150 else if (cval->expression.vtype == TYPE_FLOAT)
4151 tmp->expression.count = cval->constval.vfloat;
4155 parseerror(parser, "array-size must be a positive integer constant");
4160 if (parser->tok != ']') {
4162 parseerror(parser, "expected ']' after array-size");
4165 if (!parser_next(parser)) {
4167 parseerror(parser, "error after parsing array size");
4173 /* Parse a complete typename.
4174 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
4175 * but when parsing variables separated by comma
4176 * 'storebase' should point to where the base-type should be kept.
4177 * The base type makes up every bit of type information which comes *before* the
4180 * The following will be parsed in its entirety:
4182 * The 'basetype' in this case is 'void()'
4183 * and if there's a comma after it, say:
4185 * then the type-information 'void()' can be stored in 'storebase'
4187 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
4189 ast_value *var, *tmp;
4192 const char *name = NULL;
4193 bool isfield = false;
4194 bool wasarray = false;
4195 size_t morefields = 0;
4197 ctx = parser_ctx(parser);
4199 /* types may start with a dot */
4200 if (parser->tok == '.') {
4202 /* if we parsed a dot we need a typename now */
4203 if (!parser_next(parser)) {
4204 parseerror(parser, "expected typename for field definition");
4208 /* Further dots are handled seperately because they won't be part of the
4211 while (parser->tok == '.') {
4213 if (!parser_next(parser)) {
4214 parseerror(parser, "expected typename for field definition");
4219 if (parser->tok == TOKEN_IDENT)
4220 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
4221 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
4222 parseerror(parser, "expected typename");
4226 /* generate the basic type value */
4227 if (cached_typedef) {
4228 var = ast_value_copy(cached_typedef);
4229 ast_value_set_name(var, "<type(from_def)>");
4231 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
4233 for (; morefields; --morefields) {
4234 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
4235 tmp->expression.next = (ast_expression*)var;
4239 /* do not yet turn into a field - remember:
4240 * .void() foo; is a field too
4241 * .void()() foo; is a function
4245 if (!parser_next(parser)) {
4247 parseerror(parser, "parse error after typename");
4251 /* an opening paren now starts the parameter-list of a function
4252 * this is where original-QC has parameter lists.
4253 * We allow a single parameter list here.
4254 * Much like fteqcc we don't allow `float()() x`
4256 if (parser->tok == '(') {
4257 var = parse_parameter_list(parser, var);
4262 /* store the base if requested */
4264 *storebase = ast_value_copy(var);
4266 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4267 tmp->expression.next = (ast_expression*)*storebase;
4272 /* there may be a name now */
4273 if (parser->tok == TOKEN_IDENT) {
4274 name = util_strdup(parser_tokval(parser));
4276 if (!parser_next(parser)) {
4278 parseerror(parser, "error after variable or field declaration");
4283 /* now this may be an array */
4284 if (parser->tok == '[') {
4286 var = parse_arraysize(parser, var);
4291 /* This is the point where we can turn it into a field */
4293 /* turn it into a field if desired */
4294 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4295 tmp->expression.next = (ast_expression*)var;
4299 /* now there may be function parens again */
4300 if (parser->tok == '(' && opts.standard == COMPILER_QCC)
4301 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4302 if (parser->tok == '(' && wasarray)
4303 parseerror(parser, "arrays as part of a return type is not supported");
4304 while (parser->tok == '(') {
4305 var = parse_parameter_list(parser, var);
4314 /* finally name it */
4316 if (!ast_value_set_name(var, name)) {
4318 parseerror(parser, "internal error: failed to set name");
4321 /* free the name, ast_value_set_name duplicates */
4328 static bool parse_typedef(parser_t *parser)
4330 ast_value *typevar, *oldtype;
4331 ast_expression *old;
4333 typevar = parse_typename(parser, NULL, NULL);
4338 if ( (old = parser_find_var(parser, typevar->name)) ) {
4339 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
4340 " -> `%s` has been declared here: %s:%i",
4341 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
4342 ast_delete(typevar);
4346 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
4347 parseerror(parser, "type `%s` has already been declared here: %s:%i",
4348 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
4349 ast_delete(typevar);
4353 vec_push(parser->_typedefs, typevar);
4354 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
4356 if (parser->tok != ';') {
4357 parseerror(parser, "expected semicolon after typedef");
4360 if (!parser_next(parser)) {
4361 parseerror(parser, "parse error after typedef");
4368 static const char *cvq_to_str(int cvq) {
4370 case CV_NONE: return "none";
4371 case CV_VAR: return "`var`";
4372 case CV_CONST: return "`const`";
4373 default: return "<INVALID>";
4377 static bool parser_check_qualifiers(parser_t *parser, const ast_value *var, const ast_value *proto)
4380 if (proto->cvq != var->cvq) {
4381 if (!(proto->cvq == CV_CONST && var->cvq == CV_NONE &&
4382 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
4383 parser->tok == '='))
4385 return !parsewarning(parser, WARN_DIFFERENT_QUALIFIERS,
4386 "`%s` declared with different qualifiers: %s\n"
4387 " -> previous declaration here: %s:%i uses %s",
4388 var->name, cvq_to_str(var->cvq),
4389 ast_ctx(proto).file, ast_ctx(proto).line,
4390 cvq_to_str(proto->cvq));
4393 av = (var ->expression.flags & AST_FLAG_NORETURN);
4394 ao = (proto->expression.flags & AST_FLAG_NORETURN);
4396 return !parsewarning(parser, WARN_DIFFERENT_ATTRIBUTES,
4397 "`%s` declared with different attributes%s\n"
4398 " -> previous declaration here: %s:%i",
4399 var->name, (av ? ": noreturn" : ""),
4400 ast_ctx(proto).file, ast_ctx(proto).line,
4401 (ao ? ": noreturn" : ""));
4406 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref, bool is_static, uint32_t qflags, char *vstring)
4410 ast_expression *old;
4414 ast_value *basetype = NULL;
4416 bool isparam = false;
4417 bool isvector = false;
4418 bool cleanvar = true;
4419 bool wasarray = false;
4423 if (!localblock && is_static)
4424 parseerror(parser, "`static` qualifier is not supported in global scope");
4426 /* get the first complete variable */
4427 var = parse_typename(parser, &basetype, cached_typedef);
4430 ast_delete(basetype);
4438 /* Part 0: finish the type */
4439 if (parser->tok == '(') {
4440 if (opts.standard == COMPILER_QCC)
4441 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4442 var = parse_parameter_list(parser, var);
4448 /* we only allow 1-dimensional arrays */
4449 if (parser->tok == '[') {
4451 var = parse_arraysize(parser, var);
4457 if (parser->tok == '(' && wasarray) {
4458 parseerror(parser, "arrays as part of a return type is not supported");
4459 /* we'll still parse the type completely for now */
4461 /* for functions returning functions */
4462 while (parser->tok == '(') {
4463 if (opts.standard == COMPILER_QCC)
4464 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4465 var = parse_parameter_list(parser, var);
4472 var->cvq = qualifier;
4473 var->expression.flags |= qflags;
4474 if (var->expression.flags & AST_FLAG_DEPRECATED)
4475 var->desc = vstring;
4478 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
4479 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
4480 * is then filled with the previous definition and the parameter-names replaced.
4482 if (!strcmp(var->name, "nil")) {
4483 if (OPTS_FLAG(UNTYPED_NIL)) {
4484 if (!localblock || !OPTS_FLAG(PERMISSIVE))
4485 parseerror(parser, "name `nil` not allowed (try -fpermissive)");
4487 (void)!parsewarning(parser, WARN_RESERVED_NAMES, "variable name `nil` is reserved");
4490 /* Deal with end_sys_ vars */
4492 if (!strcmp(var->name, "end_sys_globals")) {
4494 parser->crc_globals = vec_size(parser->globals);
4497 else if (!strcmp(var->name, "end_sys_fields")) {
4499 parser->crc_fields = vec_size(parser->fields);
4502 if (was_end && var->expression.vtype == TYPE_FIELD) {
4503 if (parsewarning(parser, WARN_END_SYS_FIELDS,
4504 "global '%s' hint should not be a field",
4505 parser_tokval(parser)))
4512 if (!nofields && var->expression.vtype == TYPE_FIELD)
4514 /* deal with field declarations */
4515 old = parser_find_field(parser, var->name);
4517 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
4518 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
4527 parseerror(parser, "field `%s` already declared here: %s:%i",
4528 var->name, ast_ctx(old).file, ast_ctx(old).line);
4533 if (opts.standard == COMPILER_QCC &&
4534 (old = parser_find_global(parser, var->name)))
4536 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
4537 parseerror(parser, "field `%s` already declared here: %s:%i",
4538 var->name, ast_ctx(old).file, ast_ctx(old).line);
4545 /* deal with other globals */
4546 old = parser_find_global(parser, var->name);
4547 if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
4549 /* This is a function which had a prototype */
4550 if (!ast_istype(old, ast_value)) {
4551 parseerror(parser, "internal error: prototype is not an ast_value");
4555 proto = (ast_value*)old;
4556 proto->desc = var->desc;
4557 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
4558 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
4560 ast_ctx(proto).file, ast_ctx(proto).line);
4564 /* we need the new parameter-names */
4565 for (i = 0; i < vec_size(proto->expression.params); ++i)
4566 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
4567 if (!parser_check_qualifiers(parser, var, proto)) {
4574 proto->expression.flags |= var->expression.flags;
4582 if (opts.standard == COMPILER_GMQCC) {
4583 parseerror(parser, "global `%s` already declared here: %s:%i",
4584 var->name, ast_ctx(old).file, ast_ctx(old).line);
4588 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
4589 "global `%s` already declared here: %s:%i",
4590 var->name, ast_ctx(old).file, ast_ctx(old).line))
4595 proto = (ast_value*)old;
4596 if (!ast_istype(old, ast_value)) {
4597 parseerror(parser, "internal error: not an ast_value");
4602 if (!parser_check_qualifiers(parser, var, proto)) {
4607 proto->expression.flags |= var->expression.flags;
4612 if (opts.standard == COMPILER_QCC &&
4613 (old = parser_find_field(parser, var->name)))
4615 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
4616 parseerror(parser, "global `%s` already declared here: %s:%i",
4617 var->name, ast_ctx(old).file, ast_ctx(old).line);
4624 else /* it's not a global */
4626 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
4627 if (old && !isparam) {
4628 parseerror(parser, "local `%s` already declared here: %s:%i",
4629 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
4633 old = parser_find_local(parser, var->name, 0, &isparam);
4634 if (old && isparam) {
4635 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
4636 "local `%s` is shadowing a parameter", var->name))
4638 parseerror(parser, "local `%s` already declared here: %s:%i",
4639 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
4643 if (opts.standard != COMPILER_GMQCC) {
4651 /* in a noref section we simply bump the usecount */
4652 if (noref || parser->noref)
4656 * Create the global/local, and deal with vector types.
4659 if (var->expression.vtype == TYPE_VECTOR)
4661 else if (var->expression.vtype == TYPE_FIELD &&
4662 var->expression.next->expression.vtype == TYPE_VECTOR)
4666 if (!create_vector_members(var, me)) {
4673 /* deal with global variables, fields, functions */
4674 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
4675 var->isfield = true;
4676 vec_push(parser->fields, (ast_expression*)var);
4677 util_htset(parser->htfields, var->name, var);
4679 for (i = 0; i < 3; ++i) {
4680 vec_push(parser->fields, (ast_expression*)me[i]);
4681 util_htset(parser->htfields, me[i]->name, me[i]);
4686 vec_push(parser->globals, (ast_expression*)var);
4687 util_htset(parser->htglobals, var->name, var);
4689 for (i = 0; i < 3; ++i) {
4690 vec_push(parser->globals, (ast_expression*)me[i]);
4691 util_htset(parser->htglobals, me[i]->name, me[i]);
4697 /* a static adds itself to be generated like any other global
4698 * but is added to the local namespace instead
4700 char *defname = NULL;
4701 size_t prefix_len, ln;
4703 ln = strlen(parser->function->name);
4704 vec_append(defname, ln, parser->function->name);
4706 vec_append(defname, 2, "::");
4707 /* remember the length up to here */
4708 prefix_len = vec_size(defname);
4710 /* Add it to the local scope */
4711 util_htset(vec_last(parser->variables), var->name, (void*)var);
4712 /* now rename the global */
4713 ln = strlen(var->name);
4714 vec_append(defname, ln, var->name);
4715 ast_value_set_name(var, defname);
4717 /* push it to the to-be-generated globals */
4718 vec_push(parser->globals, (ast_expression*)var);
4720 /* same game for the vector members */
4722 for (i = 0; i < 3; ++i) {
4723 util_htset(vec_last(parser->variables), me[i]->name, (void*)(me[i]));
4725 vec_shrinkto(defname, prefix_len);
4726 ln = strlen(me[i]->name);
4727 vec_append(defname, ln, me[i]->name);
4728 ast_member_set_name(me[i], defname);
4730 vec_push(parser->globals, (ast_expression*)me[i]);
4735 vec_push(localblock->locals, var);
4736 parser_addlocal(parser, var->name, (ast_expression*)var);
4738 for (i = 0; i < 3; ++i) {
4739 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
4740 ast_block_collect(localblock, (ast_expression*)me[i]);
4746 me[0] = me[1] = me[2] = NULL;
4751 if (var->expression.vtype == TYPE_ARRAY) {
4753 snprintf(name, sizeof(name), "%s##SET", var->name);
4754 if (!parser_create_array_setter(parser, var, name))
4756 snprintf(name, sizeof(name), "%s##GET", var->name);
4757 if (!parser_create_array_getter(parser, var, var->expression.next, name))
4760 else if (!localblock && !nofields &&
4761 var->expression.vtype == TYPE_FIELD &&
4762 var->expression.next->expression.vtype == TYPE_ARRAY)
4765 ast_expression *telem;
4767 ast_value *array = (ast_value*)var->expression.next;
4769 if (!ast_istype(var->expression.next, ast_value)) {
4770 parseerror(parser, "internal error: field element type must be an ast_value");
4774 snprintf(name, sizeof(name), "%s##SETF", var->name);
4775 if (!parser_create_array_field_setter(parser, array, name))
4778 telem = ast_type_copy(ast_ctx(var), array->expression.next);
4779 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
4780 tfield->expression.next = telem;
4781 snprintf(name, sizeof(name), "%s##GETFP", var->name);
4782 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
4790 if (parser->tok == ';') {
4791 ast_delete(basetype);
4792 if (!parser_next(parser)) {
4793 parseerror(parser, "error after variable declaration");
4799 if (parser->tok == ',')
4803 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
4806 parseerror(parser, "missing comma or semicolon while parsing variables");
4810 if (localblock && opts.standard == COMPILER_QCC) {
4811 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
4812 "initializing expression turns variable `%s` into a constant in this standard",
4819 if (parser->tok != '{') {
4820 if (parser->tok != '=') {
4821 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
4825 if (!parser_next(parser)) {
4826 parseerror(parser, "error parsing initializer");
4830 else if (opts.standard == COMPILER_QCC) {
4831 parseerror(parser, "expected '=' before function body in this standard");
4834 if (parser->tok == '#') {
4835 ast_function *func = NULL;
4838 parseerror(parser, "cannot declare builtins within functions");
4841 if (var->expression.vtype != TYPE_FUNCTION) {
4842 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
4845 if (!parser_next(parser)) {
4846 parseerror(parser, "expected builtin number");
4849 if (parser->tok != TOKEN_INTCONST) {
4850 parseerror(parser, "builtin number must be an integer constant");
4853 if (parser_token(parser)->constval.i < 0) {
4854 parseerror(parser, "builtin number must be an integer greater than zero");
4858 if (var->hasvalue) {
4859 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
4860 "builtin `%s` has already been defined\n"
4861 " -> previous declaration here: %s:%i",
4862 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
4866 func = ast_function_new(ast_ctx(var), var->name, var);
4868 parseerror(parser, "failed to allocate function for `%s`", var->name);
4871 vec_push(parser->functions, func);
4873 func->builtin = -parser_token(parser)->constval.i-1;
4876 if (!parser_next(parser)) {
4877 parseerror(parser, "expected comma or semicolon");
4879 ast_function_delete(func);
4880 var->constval.vfunc = NULL;
4884 else if (parser->tok == '{' || parser->tok == '[')
4887 parseerror(parser, "cannot declare functions within functions");
4892 ast_ctx(proto) = parser_ctx(parser);
4894 if (!parse_function_body(parser, var))
4896 ast_delete(basetype);
4897 for (i = 0; i < vec_size(parser->gotos); ++i)
4898 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
4899 vec_free(parser->gotos);
4900 vec_free(parser->labels);
4903 ast_expression *cexp;
4906 cexp = parse_expression_leave(parser, true, false);
4911 cval = (ast_value*)cexp;
4912 if (cval != parser->nil &&
4913 (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
4916 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
4920 if (opts.standard != COMPILER_GMQCC &&
4921 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
4922 qualifier != CV_VAR)
4924 var->cvq = CV_CONST;
4926 if (cval == parser->nil)
4927 var->expression.flags |= AST_FLAG_INITIALIZED;
4930 var->hasvalue = true;
4931 if (cval->expression.vtype == TYPE_STRING)
4932 var->constval.vstring = parser_strdup(cval->constval.vstring);
4933 else if (cval->expression.vtype == TYPE_FIELD)
4934 var->constval.vfield = cval;
4936 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
4942 shunt sy = { NULL, NULL };
4945 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
4946 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
4947 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
4948 if (!parser_sy_apply_operator(parser, &sy))
4951 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
4952 parseerror(parser, "internal error: leaked operands");
4953 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
4963 if (parser->tok == ',') {
4964 if (!parser_next(parser)) {
4965 parseerror(parser, "expected another variable");
4969 if (parser->tok != TOKEN_IDENT) {
4970 parseerror(parser, "expected another variable");
4973 var = ast_value_copy(basetype);
4975 ast_value_set_name(var, parser_tokval(parser));
4976 if (!parser_next(parser)) {
4977 parseerror(parser, "error parsing variable declaration");
4983 if (parser->tok != ';') {
4984 parseerror(parser, "missing semicolon after variables");
4988 if (!parser_next(parser)) {
4989 parseerror(parser, "parse error after variable declaration");
4993 ast_delete(basetype);
4997 if (cleanvar && var)
4999 ast_delete(basetype);
5003 ast_delete(basetype);
5004 if (cleanvar && var)
5006 if (me[0]) ast_member_delete(me[0]);
5007 if (me[1]) ast_member_delete(me[1]);
5008 if (me[2]) ast_member_delete(me[2]);
5012 static bool parser_global_statement(parser_t *parser)
5016 bool is_static = false;
5017 uint32_t qflags = 0;
5018 ast_value *istype = NULL;
5019 char *vstring = NULL;
5021 if (parser->tok == TOKEN_IDENT)
5022 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
5024 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
5026 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false, 0, NULL);
5028 else if (parse_qualifiers(parser, false, &cvq, &noref, &is_static, &qflags, &vstring))
5030 if (cvq == CV_WRONG)
5032 return parse_variable(parser, NULL, true, cvq, NULL, noref, is_static, qflags, vstring);
5034 else if (parser->tok == TOKEN_KEYWORD)
5036 if (!strcmp(parser_tokval(parser), "typedef")) {
5037 if (!parser_next(parser)) {
5038 parseerror(parser, "expected type definition after 'typedef'");
5041 return parse_typedef(parser);
5043 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
5046 else if (parser->tok == '#')
5048 return parse_pragma(parser);
5050 else if (parser->tok == '$')
5052 if (!parser_next(parser)) {
5053 parseerror(parser, "parse error");
5059 parseerror(parser, "unexpected token: %s", parser->lex->tok.value);
5065 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
5067 return util_crc16(old, str, strlen(str));
5070 static void progdefs_crc_file(const char *str)
5072 /* write to progdefs.h here */
5076 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
5078 old = progdefs_crc_sum(old, str);
5079 progdefs_crc_file(str);
5083 static void generate_checksum(parser_t *parser)
5085 uint16_t crc = 0xFFFF;
5089 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
5090 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
5092 progdefs_crc_file("\tint\tpad;\n");
5093 progdefs_crc_file("\tint\tofs_return[3];\n");
5094 progdefs_crc_file("\tint\tofs_parm0[3];\n");
5095 progdefs_crc_file("\tint\tofs_parm1[3];\n");
5096 progdefs_crc_file("\tint\tofs_parm2[3];\n");
5097 progdefs_crc_file("\tint\tofs_parm3[3];\n");
5098 progdefs_crc_file("\tint\tofs_parm4[3];\n");
5099 progdefs_crc_file("\tint\tofs_parm5[3];\n");
5100 progdefs_crc_file("\tint\tofs_parm6[3];\n");
5101 progdefs_crc_file("\tint\tofs_parm7[3];\n");
5103 for (i = 0; i < parser->crc_globals; ++i) {
5104 if (!ast_istype(parser->globals[i], ast_value))
5106 value = (ast_value*)(parser->globals[i]);
5107 switch (value->expression.vtype) {
5108 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5109 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5110 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5111 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5113 crc = progdefs_crc_both(crc, "\tint\t");
5116 crc = progdefs_crc_both(crc, value->name);
5117 crc = progdefs_crc_both(crc, ";\n");
5119 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
5120 for (i = 0; i < parser->crc_fields; ++i) {
5121 if (!ast_istype(parser->fields[i], ast_value))
5123 value = (ast_value*)(parser->fields[i]);
5124 switch (value->expression.next->expression.vtype) {
5125 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5126 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5127 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5128 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5130 crc = progdefs_crc_both(crc, "\tint\t");
5133 crc = progdefs_crc_both(crc, value->name);
5134 crc = progdefs_crc_both(crc, ";\n");
5136 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
5141 static parser_t *parser;
5148 parser = (parser_t*)mem_a(sizeof(parser_t));
5152 memset(parser, 0, sizeof(*parser));
5154 for (i = 0; i < operator_count; ++i) {
5155 if (operators[i].id == opid1('=')) {
5156 parser->assign_op = operators+i;
5160 if (!parser->assign_op) {
5161 printf("internal error: initializing parser: failed to find assign operator\n");
5166 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
5167 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
5168 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
5169 vec_push(parser->_blocktypedefs, 0);
5171 empty_ctx.file = "<internal>";
5173 parser->nil = ast_value_new(empty_ctx, "nil", TYPE_NIL);
5174 parser->nil->cvq = CV_CONST;
5175 if (OPTS_FLAG(UNTYPED_NIL))
5176 util_htset(parser->htglobals, "nil", (void*)parser->nil);
5180 bool parser_compile()
5182 /* initial lexer/parser state */
5183 parser->lex->flags.noops = true;
5185 if (parser_next(parser))
5187 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
5189 if (!parser_global_statement(parser)) {
5190 if (parser->tok == TOKEN_EOF)
5191 parseerror(parser, "unexpected eof");
5192 else if (compile_errors)
5193 parseerror(parser, "there have been errors, bailing out");
5194 lex_close(parser->lex);
5200 parseerror(parser, "parse error");
5201 lex_close(parser->lex);
5206 lex_close(parser->lex);
5209 return !compile_errors;
5212 bool parser_compile_file(const char *filename)
5214 parser->lex = lex_open(filename);
5216 con_err("failed to open file \"%s\"\n", filename);
5219 return parser_compile();
5222 bool parser_compile_string(const char *name, const char *str, size_t len)
5224 parser->lex = lex_open_string(str, len, name);
5226 con_err("failed to create lexer for string \"%s\"\n", name);
5229 return parser_compile();
5232 void parser_cleanup()
5235 for (i = 0; i < vec_size(parser->accessors); ++i) {
5236 ast_delete(parser->accessors[i]->constval.vfunc);
5237 parser->accessors[i]->constval.vfunc = NULL;
5238 ast_delete(parser->accessors[i]);
5240 for (i = 0; i < vec_size(parser->functions); ++i) {
5241 ast_delete(parser->functions[i]);
5243 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
5244 ast_delete(parser->imm_vector[i]);
5246 for (i = 0; i < vec_size(parser->imm_string); ++i) {
5247 ast_delete(parser->imm_string[i]);
5249 for (i = 0; i < vec_size(parser->imm_float); ++i) {
5250 ast_delete(parser->imm_float[i]);
5252 for (i = 0; i < vec_size(parser->fields); ++i) {
5253 ast_delete(parser->fields[i]);
5255 for (i = 0; i < vec_size(parser->globals); ++i) {
5256 ast_delete(parser->globals[i]);
5258 vec_free(parser->accessors);
5259 vec_free(parser->functions);
5260 vec_free(parser->imm_vector);
5261 vec_free(parser->imm_string);
5262 vec_free(parser->imm_float);
5263 vec_free(parser->globals);
5264 vec_free(parser->fields);
5266 for (i = 0; i < vec_size(parser->variables); ++i)
5267 util_htdel(parser->variables[i]);
5268 vec_free(parser->variables);
5269 vec_free(parser->_blocklocals);
5270 vec_free(parser->_locals);
5272 for (i = 0; i < vec_size(parser->_typedefs); ++i)
5273 ast_delete(parser->_typedefs[i]);
5274 vec_free(parser->_typedefs);
5275 for (i = 0; i < vec_size(parser->typedefs); ++i)
5276 util_htdel(parser->typedefs[i]);
5277 vec_free(parser->typedefs);
5278 vec_free(parser->_blocktypedefs);
5280 vec_free(parser->_block_ctx);
5282 vec_free(parser->labels);
5283 vec_free(parser->gotos);
5284 vec_free(parser->breaks);
5285 vec_free(parser->continues);
5287 ast_value_delete(parser->nil);
5292 bool parser_finish(const char *output)
5298 if (compile_errors) {
5299 con_out("*** there were compile errors\n");
5303 ir = ir_builder_new("gmqcc_out");
5305 con_out("failed to allocate builder\n");
5309 for (i = 0; i < vec_size(parser->fields); ++i) {
5312 if (!ast_istype(parser->fields[i], ast_value))
5314 field = (ast_value*)parser->fields[i];
5315 hasvalue = field->hasvalue;
5316 field->hasvalue = false;
5317 if (!ast_global_codegen((ast_value*)field, ir, true)) {
5318 con_out("failed to generate field %s\n", field->name);
5319 ir_builder_delete(ir);
5324 ast_expression *subtype;
5325 field->hasvalue = true;
5326 subtype = field->expression.next;
5327 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
5328 if (subtype->expression.vtype == TYPE_FIELD)
5329 ifld->fieldtype = subtype->expression.next->expression.vtype;
5330 else if (subtype->expression.vtype == TYPE_FUNCTION)
5331 ifld->outtype = subtype->expression.next->expression.vtype;
5332 (void)!ir_value_set_field(field->ir_v, ifld);
5335 for (i = 0; i < vec_size(parser->globals); ++i) {
5337 if (!ast_istype(parser->globals[i], ast_value))
5339 asvalue = (ast_value*)(parser->globals[i]);
5340 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
5341 retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
5342 "unused global: `%s`", asvalue->name);
5344 if (!ast_global_codegen(asvalue, ir, false)) {
5345 con_out("failed to generate global %s\n", asvalue->name);
5346 ir_builder_delete(ir);
5350 for (i = 0; i < vec_size(parser->imm_float); ++i) {
5351 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
5352 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
5353 ir_builder_delete(ir);
5357 for (i = 0; i < vec_size(parser->imm_string); ++i) {
5358 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
5359 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
5360 ir_builder_delete(ir);
5364 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
5365 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
5366 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
5367 ir_builder_delete(ir);
5371 for (i = 0; i < vec_size(parser->globals); ++i) {
5373 if (!ast_istype(parser->globals[i], ast_value))
5375 asvalue = (ast_value*)(parser->globals[i]);
5376 if (!(asvalue->expression.flags & AST_FLAG_INITIALIZED))
5378 if (asvalue->cvq == CV_CONST && !asvalue->hasvalue)
5379 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_CONSTANT,
5380 "uninitialized constant: `%s`",
5382 else if ((asvalue->cvq == CV_NONE || asvalue->cvq == CV_CONST) && !asvalue->hasvalue)
5383 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_GLOBAL,
5384 "uninitialized global: `%s`",
5387 if (!ast_generate_accessors(asvalue, ir)) {
5388 ir_builder_delete(ir);
5392 for (i = 0; i < vec_size(parser->fields); ++i) {
5394 asvalue = (ast_value*)(parser->fields[i]->expression.next);
5396 if (!ast_istype((ast_expression*)asvalue, ast_value))
5398 if (asvalue->expression.vtype != TYPE_ARRAY)
5400 if (!ast_generate_accessors(asvalue, ir)) {
5401 ir_builder_delete(ir);
5405 for (i = 0; i < vec_size(parser->functions); ++i) {
5406 if (!ast_function_codegen(parser->functions[i], ir)) {
5407 con_out("failed to generate function %s\n", parser->functions[i]->name);
5408 ir_builder_delete(ir);
5413 ir_builder_dump(ir, con_out);
5414 for (i = 0; i < vec_size(parser->functions); ++i) {
5415 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
5416 con_out("failed to finalize function %s\n", parser->functions[i]->name);
5417 ir_builder_delete(ir);
5422 if (compile_Werrors) {
5423 con_out("*** there were warnings treated as errors\n");
5424 compile_show_werrors();
5430 ir_builder_dump(ir, con_out);
5432 generate_checksum(parser);
5434 if (!ir_builder_generate(ir, output)) {
5435 con_out("*** failed to generate output file\n");
5436 ir_builder_delete(ir);
5441 ir_builder_delete(ir);