5 * Permission is hereby granted, free of charge, to any person obtaining a copy of
6 * this software and associated documentation files (the "Software"), to deal in
7 * the Software without restriction, including without limitation the rights to
8 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
9 * of the Software, and to permit persons to whom the Software is furnished to do
10 * so, subject to the following conditions:
12 * The above copyright notice and this permission notice shall be included in all
13 * copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
29 /* beginning of locals */
30 #define PARSER_HT_LOCALS 2
32 #define PARSER_HT_SIZE 1024
33 #define TYPEDEF_HT_SIZE 16
39 ast_expression **globals;
40 ast_expression **fields;
41 ast_function **functions;
42 ast_value **imm_float;
43 ast_value **imm_string;
44 ast_value **imm_vector;
47 /* must be deleted first, they reference immediates and values */
48 ast_value **accessors;
50 ast_value *imm_float_zero;
51 ast_value *imm_float_one;
52 ast_value *imm_vector_zero;
57 ast_function *function;
59 /* All the labels the function defined...
60 * Should they be in ast_function instead?
65 /* A list of hashtables for each scope */
71 /* not to be used directly, we use the hash table */
72 ast_expression **_locals;
74 ast_value **_typedefs;
75 size_t *_blocktypedefs;
80 /* we store the '=' operator info */
81 const oper_info *assign_op;
83 /* TYPE_FIELD -> parser_find_fields is used instead of find_var
84 * TODO: TYPE_VECTOR -> x, y and z are accepted in the gmqcc standard
85 * anything else: type error
89 /* Keep track of our ternary vs parenthesis nesting state.
90 * If we reach a 'comma' operator in a ternary without a paren,
91 * we shall trigger -Wternary-precedence.
93 enum { POT_PAREN, POT_TERNARY1, POT_TERNARY2 } *pot;
99 static const ast_expression *intrinsic_debug_typestring = (ast_expression*)0x10;
101 static void parser_enterblock(parser_t *parser);
102 static bool parser_leaveblock(parser_t *parser);
103 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e);
104 static bool parse_typedef(parser_t *parser);
105 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref, bool noreturn);
106 static ast_block* parse_block(parser_t *parser);
107 static bool parse_block_into(parser_t *parser, ast_block *block);
108 static bool parse_statement_or_block(parser_t *parser, ast_expression **out);
109 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases);
110 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma);
111 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma);
113 static void parseerror(parser_t *parser, const char *fmt, ...)
120 con_vprintmsg(LVL_ERROR, parser->lex->tok.ctx.file, parser->lex->tok.ctx.line, "parse error", fmt, ap);
124 /* returns true if it counts as an error */
125 static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
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 = 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 util_htget(parser->htfields, name);
302 static ast_expression* parser_find_global(parser_t *parser, const char *name)
304 return 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 = 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[0]->expression.vtype != TYPE_FLOAT &&
766 exprs[1]->expression.vtype != TYPE_VECTOR &&
767 exprs[1]->expression.vtype != TYPE_FLOAT)
769 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
770 type_name[exprs[1]->expression.vtype],
771 type_name[exprs[0]->expression.vtype]);
774 switch (exprs[0]->expression.vtype) {
776 if (exprs[1]->expression.vtype == TYPE_VECTOR)
778 if (CanConstFold(exprs[0], exprs[1]))
779 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
781 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
785 if (CanConstFold(exprs[0], exprs[1]))
786 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
788 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
792 if (exprs[1]->expression.vtype == TYPE_FLOAT)
794 if (CanConstFold(exprs[0], exprs[1]))
795 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
797 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
801 if (CanConstFold(exprs[0], exprs[1]))
802 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
804 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
808 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
809 type_name[exprs[1]->expression.vtype],
810 type_name[exprs[0]->expression.vtype]);
815 if (NotSameType(TYPE_FLOAT)) {
816 parseerror(parser, "invalid types used in expression: cannot divide types %s and %s",
817 type_name[exprs[0]->expression.vtype],
818 type_name[exprs[1]->expression.vtype]);
821 if (CanConstFold(exprs[0], exprs[1]))
822 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
824 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
828 parseerror(parser, "qc does not have a modulo operator");
832 if (NotSameType(TYPE_FLOAT)) {
833 parseerror(parser, "invalid types used in expression: cannot perform bit operations between types %s and %s",
834 type_name[exprs[0]->expression.vtype],
835 type_name[exprs[1]->expression.vtype]);
838 if (CanConstFold(exprs[0], exprs[1]))
839 out = (ast_expression*)parser_const_float(parser,
840 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
841 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
843 out = (ast_expression*)ast_binary_new(ctx,
844 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
848 parseerror(parser, "TODO: bitxor");
853 case opid3('<','<','='):
854 case opid3('>','>','='):
855 parseerror(parser, "TODO: shifts");
859 generated_op += 1; /* INSTR_OR */
861 generated_op += INSTR_AND;
863 if (NotSameType(TYPE_FLOAT)) {
864 parseerror(parser, "invalid types used in expression: cannot perform logical operations between types %s and %s",
865 type_name[exprs[0]->expression.vtype],
866 type_name[exprs[1]->expression.vtype]);
867 parseerror(parser, "TODO: logical ops for arbitrary types using INSTR_NOT");
868 parseerror(parser, "TODO: optional early out");
872 if (CanConstFold(exprs[0], exprs[1]))
874 if (OPTS_FLAG(PERL_LOGIC)) {
875 if (immediate_is_true(ctx, asvalue[0]))
879 out = (ast_expression*)parser_const_float(parser,
880 ( (generated_op == INSTR_OR)
881 ? (immediate_is_true(ctx, asvalue[0]) || immediate_is_true(ctx, asvalue[1]))
882 : (immediate_is_true(ctx, asvalue[0]) && immediate_is_true(ctx, asvalue[1])) )
887 if (OPTS_FLAG(PERL_LOGIC) && !ast_compare_type(exprs[0], exprs[1])) {
888 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
889 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
890 parseerror(parser, "invalid types for logical operation with -fperl-logic: %s and %s", ty1, ty2);
893 if (OPTS_FLAG(CORRECT_LOGIC)) {
894 /* non-floats need to be NOTed */
895 for (i = 0; i < 2; ++i) {
896 if (exprs[i]->expression.vtype != TYPE_FLOAT) {
897 if (type_not_instr[exprs[i]->expression.vtype] == AINSTR_END) {
898 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
899 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
900 parseerror(parser, "invalid types for logical operation with -fcorrect-logic: %s and %s", ty1, ty2);
903 out = (ast_expression*)ast_unary_new(ctx, type_not_instr[exprs[i]->expression.vtype], exprs[i]);
905 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
907 exprs[i] = out; out = NULL;
908 if (OPTS_FLAG(PERL_LOGIC)) {
913 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
918 if (vec_last(parser->pot) != POT_TERNARY2) {
919 parseerror(parser, "mismatched parenthesis/ternary");
922 vec_pop(parser->pot);
923 if (exprs[1]->expression.vtype != exprs[2]->expression.vtype) {
924 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
925 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
926 parseerror(parser, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
929 if (CanConstFold1(exprs[0]))
930 out = (ConstF(0) ? exprs[1] : exprs[2]);
932 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
936 generated_op += 1; /* INSTR_GT */
938 generated_op += 1; /* INSTR_LT */
939 case opid2('>', '='):
940 generated_op += 1; /* INSTR_GE */
941 case opid2('<', '='):
942 generated_op += INSTR_LE;
943 if (NotSameType(TYPE_FLOAT)) {
944 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
945 type_name[exprs[0]->expression.vtype],
946 type_name[exprs[1]->expression.vtype]);
949 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
951 case opid2('!', '='):
952 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
953 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
954 type_name[exprs[0]->expression.vtype],
955 type_name[exprs[1]->expression.vtype]);
958 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
960 case opid2('=', '='):
961 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
962 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
963 type_name[exprs[0]->expression.vtype],
964 type_name[exprs[1]->expression.vtype]);
967 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
971 if (ast_istype(exprs[0], ast_entfield)) {
972 ast_expression *field = ((ast_entfield*)exprs[0])->field;
973 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
974 exprs[0]->expression.vtype == TYPE_FIELD &&
975 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
977 assignop = type_storep_instr[TYPE_VECTOR];
980 assignop = type_storep_instr[exprs[0]->expression.vtype];
981 if (assignop == AINSTR_END ||
982 !ast_compare_type(field->expression.next, exprs[1]))
984 ast_type_to_string(field->expression.next, ty1, sizeof(ty1));
985 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
986 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
987 field->expression.next->expression.vtype == TYPE_FUNCTION &&
988 exprs[1]->expression.vtype == TYPE_FUNCTION)
990 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
991 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
997 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1002 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1003 exprs[0]->expression.vtype == TYPE_FIELD &&
1004 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
1006 assignop = type_store_instr[TYPE_VECTOR];
1009 assignop = type_store_instr[exprs[0]->expression.vtype];
1012 if (assignop == AINSTR_END) {
1013 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1014 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1015 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1017 else if (!ast_compare_type(exprs[0], exprs[1])) {
1018 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1019 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1020 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1021 exprs[0]->expression.vtype == TYPE_FUNCTION &&
1022 exprs[1]->expression.vtype == TYPE_FUNCTION)
1024 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
1025 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
1031 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1034 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1035 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1037 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
1039 case opid3('+','+','P'):
1040 case opid3('-','-','P'):
1042 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1043 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1044 parseerror(parser, "invalid type for prefix increment: %s", ty1);
1047 if (op->id == opid3('+','+','P'))
1048 addop = INSTR_ADD_F;
1050 addop = INSTR_SUB_F;
1051 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1052 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1054 if (ast_istype(exprs[0], ast_entfield)) {
1055 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1057 (ast_expression*)parser_const_float_1(parser));
1059 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1061 (ast_expression*)parser_const_float_1(parser));
1064 case opid3('S','+','+'):
1065 case opid3('S','-','-'):
1067 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1068 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1069 parseerror(parser, "invalid type for suffix increment: %s", ty1);
1072 if (op->id == opid3('S','+','+')) {
1073 addop = INSTR_ADD_F;
1074 subop = INSTR_SUB_F;
1076 addop = INSTR_SUB_F;
1077 subop = INSTR_ADD_F;
1079 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1080 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1082 if (ast_istype(exprs[0], ast_entfield)) {
1083 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1085 (ast_expression*)parser_const_float_1(parser));
1087 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1089 (ast_expression*)parser_const_float_1(parser));
1093 out = (ast_expression*)ast_binary_new(ctx, subop,
1095 (ast_expression*)parser_const_float_1(parser));
1097 case opid2('+','='):
1098 case opid2('-','='):
1099 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
1100 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
1102 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1103 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1104 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1108 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1109 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1111 if (ast_istype(exprs[0], ast_entfield))
1112 assignop = type_storep_instr[exprs[0]->expression.vtype];
1114 assignop = type_store_instr[exprs[0]->expression.vtype];
1115 switch (exprs[0]->expression.vtype) {
1117 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1118 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
1119 exprs[0], exprs[1]);
1122 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1123 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1124 exprs[0], exprs[1]);
1127 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1128 type_name[exprs[0]->expression.vtype],
1129 type_name[exprs[1]->expression.vtype]);
1133 case opid2('*','='):
1134 case opid2('/','='):
1135 if (exprs[1]->expression.vtype != TYPE_FLOAT ||
1136 !(exprs[0]->expression.vtype == TYPE_FLOAT ||
1137 exprs[0]->expression.vtype == TYPE_VECTOR))
1139 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1140 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1141 parseerror(parser, "invalid types used in expression: %s and %s",
1145 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1146 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1148 if (ast_istype(exprs[0], ast_entfield))
1149 assignop = type_storep_instr[exprs[0]->expression.vtype];
1151 assignop = type_store_instr[exprs[0]->expression.vtype];
1152 switch (exprs[0]->expression.vtype) {
1154 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1155 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1156 exprs[0], exprs[1]);
1159 if (op->id == opid2('*','=')) {
1160 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1161 exprs[0], exprs[1]);
1163 /* there's no DIV_VF */
1164 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
1165 (ast_expression*)parser_const_float_1(parser),
1169 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1174 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1175 type_name[exprs[0]->expression.vtype],
1176 type_name[exprs[1]->expression.vtype]);
1180 case opid2('&','='):
1181 case opid2('|','='):
1182 if (NotSameType(TYPE_FLOAT)) {
1183 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1184 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1185 parseerror(parser, "invalid types used in expression: %s and %s",
1189 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1190 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1192 if (ast_istype(exprs[0], ast_entfield))
1193 assignop = type_storep_instr[exprs[0]->expression.vtype];
1195 assignop = type_store_instr[exprs[0]->expression.vtype];
1196 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1197 (op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1198 exprs[0], exprs[1]);
1200 case opid3('&','~','='):
1201 /* This is like: a &= ~(b);
1202 * But QC has no bitwise-not, so we implement it as
1205 if (NotSameType(TYPE_FLOAT)) {
1206 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1207 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1208 parseerror(parser, "invalid types used in expression: %s and %s",
1212 if (ast_istype(exprs[0], ast_entfield))
1213 assignop = type_storep_instr[exprs[0]->expression.vtype];
1215 assignop = type_store_instr[exprs[0]->expression.vtype];
1216 out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1219 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1220 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1222 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1223 asbinstore->keep_dest = true;
1224 out = (ast_expression*)asbinstore;
1230 parseerror(parser, "failed to apply operand %s", op->op);
1234 DEBUGSHUNTDO(con_out("applied %s\n", op->op));
1235 vec_push(sy->out, syexp(ctx, out));
1239 static bool parser_close_call(parser_t *parser, shunt *sy)
1241 /* was a function call */
1242 ast_expression *fun;
1248 vec_shrinkby(sy->ops, 1);
1249 fid = sy->ops[vec_size(sy->ops)].off;
1251 /* out[fid] is the function
1252 * everything above is parameters...
1253 * 0 params = nothing
1254 * 1 params = ast_expression
1258 if (vec_size(sy->out) < 1 || vec_size(sy->out) <= fid) {
1259 parseerror(parser, "internal error: function call needs function and parameter list...");
1263 fun = sy->out[fid].out;
1265 if (fun == intrinsic_debug_typestring) {
1267 if (fid+2 != vec_size(sy->out) ||
1268 vec_last(sy->out).block)
1270 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1273 ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
1274 ast_unref(vec_last(sy->out).out);
1275 sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
1276 (ast_expression*)parser_const_string(parser, ty, false));
1277 vec_shrinkby(sy->out, 1);
1281 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1283 parseerror(parser, "internal error: failed to create ast_call node");
1287 if (fid+1 == vec_size(sy->out)) {
1290 } else if (fid+2 == vec_size(sy->out)) {
1292 vec_shrinkby(sy->out, 1);
1293 params = sy->out[vec_size(sy->out)].block;
1297 vec_push(call->params, sy->out[vec_size(sy->out)].out);
1299 paramcount = vec_size(params->exprs);
1300 call->params = params->exprs;
1301 params->exprs = NULL;
1304 if (!ast_call_check_types(call))
1307 parseerror(parser, "invalid function call");
1311 /* overwrite fid, the function, with a call */
1312 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1314 if (fun->expression.vtype != TYPE_FUNCTION) {
1315 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
1319 if (!fun->expression.next) {
1320 parseerror(parser, "could not determine function return type");
1323 if (vec_size(fun->expression.params) != paramcount &&
1324 !((fun->expression.flags & AST_FLAG_VARIADIC) &&
1325 vec_size(fun->expression.params) < paramcount))
1328 const char *fewmany = (vec_size(fun->expression.params) > paramcount) ? "few" : "many";
1330 fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1331 if (opts.standard == COMPILER_GMQCC)
1334 parseerror(parser, "too %s parameters for call to %s: expected %i, got %i\n"
1335 " -> `%s` has been declared here: %s:%i",
1336 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1337 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1339 parseerror(parser, "too %s parameters for function call: expected %i, got %i\n"
1340 " -> it has been declared here: %s:%i",
1341 fewmany, (int)vec_size(fun->expression.params), (int)paramcount,
1342 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1348 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1349 "too %s parameters for call to %s: expected %i, got %i\n"
1350 " -> `%s` has been declared here: %s:%i",
1351 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1352 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1354 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1355 "too %s parameters for function call: expected %i, got %i\n"
1356 " -> it has been declared here: %s:%i",
1357 fewmany, (int)vec_size(fun->expression.params), (int)paramcount,
1358 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1366 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
1368 if (!vec_size(sy->ops)) {
1369 parseerror(parser, "unmatched closing paren");
1372 /* this would for bit a + (x) because there are no operators inside (x)
1373 if (sy->ops[vec_size(sy->ops)-1].paren == 1) {
1374 parseerror(parser, "empty parenthesis expression");
1378 while (vec_size(sy->ops)) {
1379 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_FUNC) {
1380 if (!parser_close_call(parser, sy))
1384 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_EXPR) {
1385 vec_shrinkby(sy->ops, 1);
1386 return !functions_only;
1388 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_INDEX) {
1391 /* pop off the parenthesis */
1392 vec_shrinkby(sy->ops, 1);
1393 /* then apply the index operator */
1394 if (!parser_sy_apply_operator(parser, sy))
1398 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_TERNARY) {
1401 if (vec_last(parser->pot) != POT_TERNARY1) {
1402 parseerror(parser, "mismatched colon in ternary expression (missing closing paren?)");
1405 vec_last(parser->pot) = POT_TERNARY2;
1406 /* pop off the parenthesis */
1407 vec_shrinkby(sy->ops, 1);
1410 if (!parser_sy_apply_operator(parser, sy))
1416 static void parser_reclassify_token(parser_t *parser)
1419 for (i = 0; i < operator_count; ++i) {
1420 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1421 parser->tok = TOKEN_OPERATOR;
1427 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma)
1429 ast_expression *expr = NULL;
1431 bool wantop = false;
1432 bool gotmemberof = false;
1434 /* count the parens because an if starts with one, so the
1435 * end of a condition is an unmatched closing paren
1443 parser->lex->flags.noops = false;
1445 parser_reclassify_token(parser);
1450 gotmemberof = false;
1452 parser->memberof = 0;
1454 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1455 parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "_"))
1457 /* a translatable string */
1461 parseerror(parser, "expected operator or end of statement, got constant");
1465 parser->lex->flags.noops = true;
1466 if (!parser_next(parser) || parser->tok != '(') {
1467 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1470 parser->lex->flags.noops = false;
1471 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1472 parseerror(parser, "expected a constant string in translatable-string extension");
1475 val = parser_const_string(parser, parser_tokval(parser), true);
1479 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1480 DEBUGSHUNTDO(con_out("push string\n"));
1482 if (!parser_next(parser) || parser->tok != ')') {
1483 parseerror(parser, "expected closing paren after translatable string");
1487 else if (parser->tok == TOKEN_IDENT)
1489 ast_expression *var;
1491 parseerror(parser, "expected operator or end of statement");
1496 if (opts.standard == COMPILER_GMQCC)
1498 if (parser->memberof == TYPE_ENTITY) {
1499 /* still get vars first since there could be a fieldpointer */
1500 var = parser_find_var(parser, parser_tokval(parser));
1502 var = parser_find_field(parser, parser_tokval(parser));
1504 else if (parser->memberof == TYPE_VECTOR)
1506 parseerror(parser, "TODO: implement effective vector member access");
1509 else if (parser->memberof) {
1510 parseerror(parser, "namespace for member not found");
1514 var = parser_find_var(parser, parser_tokval(parser));
1516 var = parser_find_var(parser, parser_tokval(parser));
1518 var = parser_find_field(parser, parser_tokval(parser));
1522 if (!strcmp(parser_tokval(parser), "__builtin_debug_typestring")) {
1523 var = (ast_expression*)intrinsic_debug_typestring;
1528 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1534 if (ast_istype(var, ast_value)) {
1535 ((ast_value*)var)->uses++;
1537 else if (ast_istype(var, ast_member)) {
1538 ast_member *mem = (ast_member*)var;
1539 if (ast_istype(mem->owner, ast_value))
1540 ((ast_value*)(mem->owner))->uses++;
1543 vec_push(sy.out, syexp(parser_ctx(parser), var));
1544 DEBUGSHUNTDO(con_out("push %s\n", parser_tokval(parser)));
1546 else if (parser->tok == TOKEN_FLOATCONST) {
1549 parseerror(parser, "expected operator or end of statement, got constant");
1553 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1556 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1557 DEBUGSHUNTDO(con_out("push %g\n", parser_token(parser)->constval.f));
1559 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1562 parseerror(parser, "expected operator or end of statement, got constant");
1566 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1569 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1570 DEBUGSHUNTDO(con_out("push %i\n", parser_token(parser)->constval.i));
1572 else if (parser->tok == TOKEN_STRINGCONST) {
1575 parseerror(parser, "expected operator or end of statement, got constant");
1579 val = parser_const_string(parser, parser_tokval(parser), false);
1582 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1583 DEBUGSHUNTDO(con_out("push string\n"));
1585 else if (parser->tok == TOKEN_VECTORCONST) {
1588 parseerror(parser, "expected operator or end of statement, got constant");
1592 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1595 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1596 DEBUGSHUNTDO(con_out("push '%g %g %g'\n",
1597 parser_token(parser)->constval.v.x,
1598 parser_token(parser)->constval.v.y,
1599 parser_token(parser)->constval.v.z));
1601 else if (parser->tok == '(') {
1602 parseerror(parser, "internal error: '(' should be classified as operator");
1605 else if (parser->tok == '[') {
1606 parseerror(parser, "internal error: '[' should be classified as operator");
1609 else if (parser->tok == ')') {
1611 DEBUGSHUNTDO(con_out("do[op] )\n"));
1615 /* we do expect an operator next */
1616 /* closing an opening paren */
1617 if (!parser_close_paren(parser, &sy, false))
1619 if (vec_last(parser->pot) != POT_PAREN) {
1620 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1623 vec_pop(parser->pot);
1625 DEBUGSHUNTDO(con_out("do[nop] )\n"));
1629 /* allowed for function calls */
1630 if (!parser_close_paren(parser, &sy, true))
1632 if (vec_last(parser->pot) != POT_PAREN) {
1633 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1636 vec_pop(parser->pot);
1640 else if (parser->tok == ']') {
1642 parseerror(parser, "operand expected");
1646 if (!parser_close_paren(parser, &sy, false))
1648 if (vec_last(parser->pot) != POT_PAREN) {
1649 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1652 vec_pop(parser->pot);
1655 else if (parser->tok == TOKEN_TYPENAME) {
1656 parseerror(parser, "unexpected typename");
1659 else if (parser->tok != TOKEN_OPERATOR) {
1661 parseerror(parser, "expected operator or end of statement");
1668 /* classify the operator */
1669 const oper_info *op;
1670 const oper_info *olast = NULL;
1672 for (o = 0; o < operator_count; ++o) {
1673 if ((!(operators[o].flags & OP_PREFIX) == wantop) &&
1674 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1675 !strcmp(parser_tokval(parser), operators[o].op))
1680 if (o == operator_count) {
1681 /* no operator found... must be the end of the statement */
1684 /* found an operator */
1687 /* when declaring variables, a comma starts a new variable */
1688 if (op->id == opid1(',') && !parens && stopatcomma) {
1689 /* fixup the token */
1694 /* a colon without a pervious question mark cannot be a ternary */
1695 if (!ternaries && op->id == opid2(':','?')) {
1700 if (op->id == opid1(',')) {
1701 if (vec_size(parser->pot) && vec_last(parser->pot) == POT_TERNARY2) {
1702 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
1706 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1707 olast = &operators[vec_last(sy.ops).etype-1];
1710 (op->prec < olast->prec) ||
1711 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1713 if (!parser_sy_apply_operator(parser, &sy))
1715 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1716 olast = &operators[vec_last(sy.ops).etype-1];
1721 if (op->id == opid1('.') && opts.standard == COMPILER_GMQCC) {
1722 /* for gmqcc standard: open up the namespace of the previous type */
1723 ast_expression *prevex = vec_last(sy.out).out;
1725 parseerror(parser, "unexpected member operator");
1728 if (prevex->expression.vtype == TYPE_ENTITY)
1729 parser->memberof = TYPE_ENTITY;
1730 else if (prevex->expression.vtype == TYPE_VECTOR)
1731 parser->memberof = TYPE_VECTOR;
1733 parseerror(parser, "type error: type has no members");
1739 if (op->id == opid1('(')) {
1741 size_t sycount = vec_size(sy.out);
1742 DEBUGSHUNTDO(con_out("push [op] (\n"));
1743 ++parens; vec_push(parser->pot, POT_PAREN);
1744 /* we expected an operator, this is the function-call operator */
1745 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_FUNC, sycount-1));
1747 ++parens; vec_push(parser->pot, POT_PAREN);
1748 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_EXPR, 0));
1749 DEBUGSHUNTDO(con_out("push [nop] (\n"));
1752 } else if (op->id == opid1('[')) {
1754 parseerror(parser, "unexpected array subscript");
1757 ++parens; vec_push(parser->pot, POT_PAREN);
1758 /* push both the operator and the paren, this makes life easier */
1759 vec_push(sy.ops, syop(parser_ctx(parser), op));
1760 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_INDEX, 0));
1762 } else if (op->id == opid2('?',':')) {
1763 vec_push(sy.ops, syop(parser_ctx(parser), op));
1764 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_TERNARY, 0));
1767 vec_push(parser->pot, POT_TERNARY1);
1768 } else if (op->id == opid2(':','?')) {
1769 if (!vec_size(parser->pot)) {
1770 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1773 if (vec_last(parser->pot) != POT_TERNARY1) {
1774 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1777 if (!parser_close_paren(parser, &sy, false))
1779 vec_push(sy.ops, syop(parser_ctx(parser), op));
1783 DEBUGSHUNTDO(con_out("push operator %s\n", op->op));
1784 vec_push(sy.ops, syop(parser_ctx(parser), op));
1785 wantop = !!(op->flags & OP_SUFFIX);
1788 if (!parser_next(parser)) {
1791 if (parser->tok == ';' ||
1792 (!parens && parser->tok == ']'))
1798 while (vec_size(sy.ops)) {
1799 if (!parser_sy_apply_operator(parser, &sy))
1803 parser->lex->flags.noops = true;
1804 if (!vec_size(sy.out)) {
1805 parseerror(parser, "empty expression");
1808 expr = sy.out[0].out;
1811 DEBUGSHUNTDO(con_out("shunt done\n"));
1812 if (vec_size(parser->pot)) {
1813 parseerror(parser, "internal error: vec_size(parser->pot) = %lu", (unsigned long)vec_size(parser->pot));
1816 vec_free(parser->pot);
1820 parser->lex->flags.noops = true;
1826 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma)
1828 ast_expression *e = parse_expression_leave(parser, stopatcomma);
1831 if (!parser_next(parser)) {
1838 static void parser_enterblock(parser_t *parser)
1840 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
1841 vec_push(parser->_blocklocals, vec_size(parser->_locals));
1842 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
1843 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
1844 vec_push(parser->_block_ctx, parser_ctx(parser));
1847 static bool parser_leaveblock(parser_t *parser)
1850 size_t locals, typedefs;
1852 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
1853 parseerror(parser, "internal error: parser_leaveblock with no block");
1857 util_htdel(vec_last(parser->variables));
1858 vec_pop(parser->variables);
1859 if (!vec_size(parser->_blocklocals)) {
1860 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
1864 locals = vec_last(parser->_blocklocals);
1865 vec_pop(parser->_blocklocals);
1866 while (vec_size(parser->_locals) != locals) {
1867 ast_expression *e = vec_last(parser->_locals);
1868 ast_value *v = (ast_value*)e;
1869 vec_pop(parser->_locals);
1870 if (ast_istype(e, ast_value) && !v->uses) {
1871 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name)) {
1878 typedefs = vec_last(parser->_blocktypedefs);
1879 while (vec_size(parser->_typedefs) != typedefs) {
1880 ast_delete(vec_last(parser->_typedefs));
1881 vec_pop(parser->_typedefs);
1883 util_htdel(vec_last(parser->typedefs));
1884 vec_pop(parser->typedefs);
1886 vec_pop(parser->_block_ctx);
1890 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
1892 vec_push(parser->_locals, e);
1893 util_htset(vec_last(parser->variables), name, (void*)e);
1896 static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
1900 ast_expression *prev;
1902 if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->expression.vtype == TYPE_STRING) {
1904 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
1907 parseerror(parser, "internal error: failed to process condition");
1912 if (OPTS_FLAG(CORRECT_LOGIC) &&
1913 !(cond->expression.vtype == TYPE_STRING && OPTS_FLAG(TRUE_EMPTY_STRINGS)))
1915 /* non-floats need to use NOT; except for strings on -ftrue-empty-strings */
1916 unary = (ast_unary*)cond;
1917 if (!ast_istype(cond, ast_unary) || unary->op < INSTR_NOT_F || unary->op > INSTR_NOT_FNC)
1919 /* use the right NOT_ */
1921 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), type_not_instr[cond->expression.vtype], cond);
1924 * cppcheck: it thinks there is a possible null pointer dereference
1925 * otherwise it would be "redundant" to check it ast_unary_new returned
1930 parseerror(parser, "internal error: failed to process condition");
1937 unary = (ast_unary*)cond;
1938 while (ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F)
1939 /*&& unary->operand->expression.vtype != TYPE_STRING) */
1941 cond = unary->operand;
1942 unary->operand = NULL;
1945 unary = (ast_unary*)cond;
1949 parseerror(parser, "internal error: failed to process condition");
1951 if (ifnot) *_ifnot = !*_ifnot;
1955 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
1958 ast_expression *cond, *ontrue = NULL, *onfalse = NULL;
1961 lex_ctx ctx = parser_ctx(parser);
1963 (void)block; /* not touching */
1965 /* skip the 'if', parse an optional 'not' and check for an opening paren */
1966 if (!parser_next(parser)) {
1967 parseerror(parser, "expected condition or 'not'");
1970 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
1972 if (!parser_next(parser)) {
1973 parseerror(parser, "expected condition in parenthesis");
1977 if (parser->tok != '(') {
1978 parseerror(parser, "expected 'if' condition in parenthesis");
1981 /* parse into the expression */
1982 if (!parser_next(parser)) {
1983 parseerror(parser, "expected 'if' condition after opening paren");
1986 /* parse the condition */
1987 cond = parse_expression_leave(parser, false);
1991 if (parser->tok != ')') {
1992 parseerror(parser, "expected closing paren after 'if' condition");
1996 /* parse into the 'then' branch */
1997 if (!parser_next(parser)) {
1998 parseerror(parser, "expected statement for on-true branch of 'if'");
2002 if (!parse_statement_or_block(parser, &ontrue)) {
2006 /* check for an else */
2007 if (!strcmp(parser_tokval(parser), "else")) {
2008 /* parse into the 'else' branch */
2009 if (!parser_next(parser)) {
2010 parseerror(parser, "expected on-false branch after 'else'");
2015 if (!parse_statement_or_block(parser, &onfalse)) {
2022 cond = process_condition(parser, cond, &ifnot);
2024 if (ontrue) ast_delete(ontrue);
2025 if (onfalse) ast_delete(onfalse);
2030 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
2032 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
2033 *out = (ast_expression*)ifthen;
2037 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
2040 ast_expression *cond, *ontrue;
2044 lex_ctx ctx = parser_ctx(parser);
2046 (void)block; /* not touching */
2048 /* skip the 'while' and check for opening paren */
2049 if (!parser_next(parser) || parser->tok != '(') {
2050 parseerror(parser, "expected 'while' condition in parenthesis");
2053 /* parse into the expression */
2054 if (!parser_next(parser)) {
2055 parseerror(parser, "expected 'while' condition after opening paren");
2058 /* parse the condition */
2059 cond = parse_expression_leave(parser, false);
2063 if (parser->tok != ')') {
2064 parseerror(parser, "expected closing paren after 'while' condition");
2068 /* parse into the 'then' branch */
2069 if (!parser_next(parser)) {
2070 parseerror(parser, "expected while-loop body");
2074 if (!parse_statement_or_block(parser, &ontrue)) {
2079 cond = process_condition(parser, cond, &ifnot);
2084 aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue);
2085 *out = (ast_expression*)aloop;
2089 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2092 ast_expression *cond, *ontrue;
2096 lex_ctx ctx = parser_ctx(parser);
2098 (void)block; /* not touching */
2100 /* skip the 'do' and get the body */
2101 if (!parser_next(parser)) {
2102 parseerror(parser, "expected loop body");
2105 if (!parse_statement_or_block(parser, &ontrue))
2108 /* expect the "while" */
2109 if (parser->tok != TOKEN_KEYWORD ||
2110 strcmp(parser_tokval(parser), "while"))
2112 parseerror(parser, "expected 'while' and condition");
2117 /* skip the 'while' and check for opening paren */
2118 if (!parser_next(parser) || parser->tok != '(') {
2119 parseerror(parser, "expected 'while' condition in parenthesis");
2123 /* parse into the expression */
2124 if (!parser_next(parser)) {
2125 parseerror(parser, "expected 'while' condition after opening paren");
2129 /* parse the condition */
2130 cond = parse_expression_leave(parser, false);
2134 if (parser->tok != ')') {
2135 parseerror(parser, "expected closing paren after 'while' condition");
2141 if (!parser_next(parser) || parser->tok != ';') {
2142 parseerror(parser, "expected semicolon after condition");
2148 if (!parser_next(parser)) {
2149 parseerror(parser, "parse error");
2155 cond = process_condition(parser, cond, &ifnot);
2160 aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue);
2161 *out = (ast_expression*)aloop;
2165 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2168 ast_expression *initexpr, *cond, *increment, *ontrue;
2174 lex_ctx ctx = parser_ctx(parser);
2176 parser_enterblock(parser);
2183 /* skip the 'while' and check for opening paren */
2184 if (!parser_next(parser) || parser->tok != '(') {
2185 parseerror(parser, "expected 'for' expressions in parenthesis");
2188 /* parse into the expression */
2189 if (!parser_next(parser)) {
2190 parseerror(parser, "expected 'for' initializer after opening paren");
2195 if (parser->tok == TOKEN_IDENT)
2196 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2198 if (typevar || parser->tok == TOKEN_TYPENAME) {
2199 if (opts.standard != COMPILER_GMQCC) {
2200 if (parsewarning(parser, WARN_EXTENSIONS,
2201 "current standard does not allow variable declarations in for-loop initializers"))
2204 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false))
2207 else if (parser->tok != ';')
2209 initexpr = parse_expression_leave(parser, false);
2214 /* move on to condition */
2215 if (parser->tok != ';') {
2216 parseerror(parser, "expected semicolon after for-loop initializer");
2219 if (!parser_next(parser)) {
2220 parseerror(parser, "expected for-loop condition");
2224 /* parse the condition */
2225 if (parser->tok != ';') {
2226 cond = parse_expression_leave(parser, false);
2231 /* move on to incrementor */
2232 if (parser->tok != ';') {
2233 parseerror(parser, "expected semicolon after for-loop initializer");
2236 if (!parser_next(parser)) {
2237 parseerror(parser, "expected for-loop condition");
2241 /* parse the incrementor */
2242 if (parser->tok != ')') {
2243 increment = parse_expression_leave(parser, false);
2246 if (!ast_side_effects(increment)) {
2247 if (genwarning(ast_ctx(increment), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2253 if (parser->tok != ')') {
2254 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2257 /* parse into the 'then' branch */
2258 if (!parser_next(parser)) {
2259 parseerror(parser, "expected for-loop body");
2262 if (!parse_statement_or_block(parser, &ontrue))
2266 cond = process_condition(parser, cond, &ifnot);
2270 aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue);
2271 *out = (ast_expression*)aloop;
2273 if (!parser_leaveblock(parser))
2277 if (initexpr) ast_delete(initexpr);
2278 if (cond) ast_delete(cond);
2279 if (increment) ast_delete(increment);
2280 (void)!parser_leaveblock(parser);
2284 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2286 ast_expression *exp = NULL;
2287 ast_return *ret = NULL;
2288 ast_value *expected = parser->function->vtype;
2290 lex_ctx ctx = parser_ctx(parser);
2292 (void)block; /* not touching */
2294 if (!parser_next(parser)) {
2295 parseerror(parser, "expected return expression");
2299 if (parser->tok != ';') {
2300 exp = parse_expression(parser, false);
2304 if (exp->expression.vtype != expected->expression.next->expression.vtype) {
2305 parseerror(parser, "return with invalid expression");
2308 ret = ast_return_new(ctx, exp);
2314 if (!parser_next(parser))
2315 parseerror(parser, "parse error");
2316 if (expected->expression.next->expression.vtype != TYPE_VOID) {
2317 if (opts.standard != COMPILER_GMQCC)
2318 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2320 parseerror(parser, "return without value");
2322 ret = ast_return_new(ctx, NULL);
2324 *out = (ast_expression*)ret;
2328 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2330 lex_ctx ctx = parser_ctx(parser);
2332 (void)block; /* not touching */
2334 if (!parser_next(parser) || parser->tok != ';') {
2335 parseerror(parser, "expected semicolon");
2339 if (!parser_next(parser))
2340 parseerror(parser, "parse error");
2342 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue);
2346 /* returns true when it was a variable qualifier, false otherwise!
2347 * on error, cvq is set to CV_WRONG
2349 static bool parse_var_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *noreturn)
2351 bool had_const = false;
2352 bool had_var = false;
2353 bool had_noref = false;
2354 bool had_noreturn = false;
2357 if (!strcmp(parser_tokval(parser), "const"))
2359 else if (!strcmp(parser_tokval(parser), "var"))
2361 else if (with_local && !strcmp(parser_tokval(parser), "local"))
2363 else if (!strcmp(parser_tokval(parser), "noref"))
2365 else if (!strcmp(parser_tokval(parser), "noreturn"))
2366 had_noreturn = true;
2367 else if (!had_const && !had_var && !had_noref && !had_noreturn) {
2372 if (!parser_next(parser))
2382 *noreturn = had_noreturn;
2385 parseerror(parser, "parse error after variable qualifier");
2390 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
2392 ast_expression *operand;
2395 ast_switch *switchnode;
2396 ast_switch_case swcase;
2399 bool noref, noreturn;
2401 lex_ctx ctx = parser_ctx(parser);
2403 (void)block; /* not touching */
2406 /* parse over the opening paren */
2407 if (!parser_next(parser) || parser->tok != '(') {
2408 parseerror(parser, "expected switch operand in parenthesis");
2412 /* parse into the expression */
2413 if (!parser_next(parser)) {
2414 parseerror(parser, "expected switch operand");
2417 /* parse the operand */
2418 operand = parse_expression_leave(parser, false);
2422 switchnode = ast_switch_new(ctx, operand);
2425 if (parser->tok != ')') {
2426 ast_delete(switchnode);
2427 parseerror(parser, "expected closing paren after 'switch' operand");
2431 /* parse over the opening paren */
2432 if (!parser_next(parser) || parser->tok != '{') {
2433 ast_delete(switchnode);
2434 parseerror(parser, "expected list of cases");
2438 if (!parser_next(parser)) {
2439 ast_delete(switchnode);
2440 parseerror(parser, "expected 'case' or 'default'");
2444 /* new block; allow some variables to be declared here */
2445 parser_enterblock(parser);
2448 if (parser->tok == TOKEN_IDENT)
2449 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2450 if (typevar || parser->tok == TOKEN_TYPENAME) {
2451 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false)) {
2452 ast_delete(switchnode);
2457 if (parse_var_qualifiers(parser, true, &cvq, &noref, &noreturn))
2459 if (cvq == CV_WRONG) {
2460 ast_delete(switchnode);
2463 if (!parse_variable(parser, block, false, cvq, NULL, noref, noreturn)) {
2464 ast_delete(switchnode);
2473 while (parser->tok != '}') {
2474 ast_block *caseblock;
2476 if (parser->tok != TOKEN_KEYWORD) {
2477 ast_delete(switchnode);
2478 parseerror(parser, "expected 'case' or 'default'");
2481 if (!strcmp(parser_tokval(parser), "case")) {
2482 if (!parser_next(parser)) {
2483 ast_delete(switchnode);
2484 parseerror(parser, "expected expression for case");
2487 swcase.value = parse_expression_leave(parser, false);
2488 if (!swcase.value) {
2489 ast_delete(switchnode);
2490 parseerror(parser, "expected expression for case");
2493 if (!OPTS_FLAG(RELAXED_SWITCH)) {
2494 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
2495 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
2501 else if (!strcmp(parser_tokval(parser), "default")) {
2502 swcase.value = NULL;
2503 if (!parser_next(parser)) {
2504 ast_delete(switchnode);
2505 parseerror(parser, "expected colon");
2510 /* Now the colon and body */
2511 if (parser->tok != ':') {
2512 if (swcase.value) ast_unref(swcase.value);
2513 ast_delete(switchnode);
2514 parseerror(parser, "expected colon");
2518 if (!parser_next(parser)) {
2519 if (swcase.value) ast_unref(swcase.value);
2520 ast_delete(switchnode);
2521 parseerror(parser, "expected statements or case");
2524 caseblock = ast_block_new(parser_ctx(parser));
2526 if (swcase.value) ast_unref(swcase.value);
2527 ast_delete(switchnode);
2530 swcase.code = (ast_expression*)caseblock;
2531 vec_push(switchnode->cases, swcase);
2533 ast_expression *expr;
2534 if (parser->tok == '}')
2536 if (parser->tok == TOKEN_KEYWORD) {
2537 if (!strcmp(parser_tokval(parser), "case") ||
2538 !strcmp(parser_tokval(parser), "default"))
2543 if (!parse_statement(parser, caseblock, &expr, true)) {
2544 ast_delete(switchnode);
2549 if (!ast_block_add_expr(caseblock, expr)) {
2550 ast_delete(switchnode);
2556 parser_leaveblock(parser);
2559 if (parser->tok != '}') {
2560 ast_delete(switchnode);
2561 parseerror(parser, "expected closing paren of case list");
2564 if (!parser_next(parser)) {
2565 ast_delete(switchnode);
2566 parseerror(parser, "parse error after switch");
2569 *out = (ast_expression*)switchnode;
2573 static bool parse_goto(parser_t *parser, ast_expression **out)
2578 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2579 parseerror(parser, "expected label name after `goto`");
2583 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
2585 for (i = 0; i < vec_size(parser->labels); ++i) {
2586 if (!strcmp(parser->labels[i]->name, parser_tokval(parser))) {
2587 ast_goto_set_label(gt, parser->labels[i]);
2591 if (i == vec_size(parser->labels))
2592 vec_push(parser->gotos, gt);
2594 if (!parser_next(parser) || parser->tok != ';') {
2595 parseerror(parser, "semicolon expected after goto label");
2598 if (!parser_next(parser)) {
2599 parseerror(parser, "parse error after goto");
2603 *out = (ast_expression*)gt;
2607 static bool parse_skipwhite(parser_t *parser)
2610 if (!parser_next(parser))
2612 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
2613 return parser->tok < TOKEN_ERROR;
2616 static bool parse_eol(parser_t *parser)
2618 if (!parse_skipwhite(parser))
2620 return parser->tok == TOKEN_EOL;
2623 static bool parse_pragma_do(parser_t *parser)
2625 if (!parser_next(parser) ||
2626 parser->tok != TOKEN_IDENT ||
2627 strcmp(parser_tokval(parser), "pragma"))
2629 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
2632 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
2633 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
2637 if (!strcmp(parser_tokval(parser), "noref")) {
2638 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
2639 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
2642 parser->noref = !!parser_token(parser)->constval.i;
2643 if (!parse_eol(parser)) {
2644 parseerror(parser, "parse error after `noref` pragma");
2650 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
2657 static bool parse_pragma(parser_t *parser)
2660 parser->lex->flags.preprocessing = true;
2661 parser->lex->flags.mergelines = true;
2662 rv = parse_pragma_do(parser);
2663 if (parser->tok != TOKEN_EOL) {
2664 parseerror(parser, "junk after pragma");
2667 parser->lex->flags.preprocessing = false;
2668 parser->lex->flags.mergelines = false;
2669 if (!parser_next(parser)) {
2670 parseerror(parser, "parse error after pragma");
2676 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
2678 bool noref, noreturn;
2680 ast_value *typevar = NULL;
2684 if (parser->tok == TOKEN_IDENT)
2685 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2687 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
2689 /* local variable */
2691 parseerror(parser, "cannot declare a variable from here");
2694 if (opts.standard == COMPILER_QCC) {
2695 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
2698 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false))
2702 else if (parse_var_qualifiers(parser, !!block, &cvq, &noref, &noreturn))
2704 if (cvq == CV_WRONG)
2706 return parse_variable(parser, block, true, cvq, NULL, noref, noreturn);
2708 else if (parser->tok == TOKEN_KEYWORD)
2710 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
2715 if (!parser_next(parser)) {
2716 parseerror(parser, "parse error after __builtin_debug_printtype");
2720 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
2722 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
2723 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
2724 if (!parser_next(parser)) {
2725 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
2731 if (!parse_statement(parser, block, out, allow_cases))
2734 con_out("__builtin_debug_printtype: got no output node\n");
2737 ast_type_to_string(*out, ty, sizeof(ty));
2738 con_out("__builtin_debug_printtype: `%s`\n", ty);
2743 else if (!strcmp(parser_tokval(parser), "return"))
2745 return parse_return(parser, block, out);
2747 else if (!strcmp(parser_tokval(parser), "if"))
2749 return parse_if(parser, block, out);
2751 else if (!strcmp(parser_tokval(parser), "while"))
2753 return parse_while(parser, block, out);
2755 else if (!strcmp(parser_tokval(parser), "do"))
2757 return parse_dowhile(parser, block, out);
2759 else if (!strcmp(parser_tokval(parser), "for"))
2761 if (opts.standard == COMPILER_QCC) {
2762 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
2765 return parse_for(parser, block, out);
2767 else if (!strcmp(parser_tokval(parser), "break"))
2769 return parse_break_continue(parser, block, out, false);
2771 else if (!strcmp(parser_tokval(parser), "continue"))
2773 return parse_break_continue(parser, block, out, true);
2775 else if (!strcmp(parser_tokval(parser), "switch"))
2777 return parse_switch(parser, block, out);
2779 else if (!strcmp(parser_tokval(parser), "case") ||
2780 !strcmp(parser_tokval(parser), "default"))
2783 parseerror(parser, "unexpected 'case' label");
2788 else if (!strcmp(parser_tokval(parser), "goto"))
2790 return parse_goto(parser, out);
2792 else if (!strcmp(parser_tokval(parser), "typedef"))
2794 if (!parser_next(parser)) {
2795 parseerror(parser, "expected type definition after 'typedef'");
2798 return parse_typedef(parser);
2800 parseerror(parser, "Unexpected keyword");
2803 else if (parser->tok == '{')
2806 inner = parse_block(parser);
2809 *out = (ast_expression*)inner;
2812 else if (parser->tok == ':')
2816 if (!parser_next(parser)) {
2817 parseerror(parser, "expected label name");
2820 if (parser->tok != TOKEN_IDENT) {
2821 parseerror(parser, "label must be an identifier");
2824 label = ast_label_new(parser_ctx(parser), parser_tokval(parser));
2827 vec_push(parser->labels, label);
2828 *out = (ast_expression*)label;
2829 if (!parser_next(parser)) {
2830 parseerror(parser, "parse error after label");
2833 for (i = 0; i < vec_size(parser->gotos); ++i) {
2834 if (!strcmp(parser->gotos[i]->name, label->name)) {
2835 ast_goto_set_label(parser->gotos[i], label);
2836 vec_remove(parser->gotos, i, 1);
2842 else if (parser->tok == ';')
2844 if (!parser_next(parser)) {
2845 parseerror(parser, "parse error after empty statement");
2852 ast_expression *exp = parse_expression(parser, false);
2856 if (!ast_side_effects(exp)) {
2857 if (genwarning(ast_ctx(exp), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2864 static bool parse_block_into(parser_t *parser, ast_block *block)
2868 parser_enterblock(parser);
2870 if (!parser_next(parser)) { /* skip the '{' */
2871 parseerror(parser, "expected function body");
2875 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
2877 ast_expression *expr = NULL;
2878 if (parser->tok == '}')
2881 if (!parse_statement(parser, block, &expr, false)) {
2882 /* parseerror(parser, "parse error"); */
2888 if (!ast_block_add_expr(block, expr)) {
2895 if (parser->tok != '}') {
2898 (void)parser_next(parser);
2902 if (!parser_leaveblock(parser))
2904 return retval && !!block;
2907 static ast_block* parse_block(parser_t *parser)
2910 block = ast_block_new(parser_ctx(parser));
2913 if (!parse_block_into(parser, block)) {
2914 ast_block_delete(block);
2920 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
2922 if (parser->tok == '{') {
2923 *out = (ast_expression*)parse_block(parser);
2926 return parse_statement(parser, NULL, out, false);
2929 static bool create_vector_members(ast_value *var, ast_member **me)
2932 size_t len = strlen(var->name);
2934 for (i = 0; i < 3; ++i) {
2935 char *name = mem_a(len+3);
2936 memcpy(name, var->name, len);
2938 name[len+1] = 'x'+i;
2940 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
2949 do { ast_member_delete(me[--i]); } while(i);
2953 static bool parse_function_body(parser_t *parser, ast_value *var)
2955 ast_block *block = NULL;
2960 ast_expression *framenum = NULL;
2961 ast_expression *nextthink = NULL;
2962 /* None of the following have to be deleted */
2963 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
2964 ast_expression *gbl_time = NULL, *gbl_self = NULL;
2965 bool has_frame_think;
2969 has_frame_think = false;
2970 old = parser->function;
2972 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
2973 parseerror(parser, "gotos/labels leaking");
2977 if (var->expression.flags & AST_FLAG_VARIADIC) {
2978 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
2979 "variadic function with implementation will not be able to access additional parameters"))
2985 if (parser->tok == '[') {
2986 /* got a frame definition: [ framenum, nextthink ]
2987 * this translates to:
2988 * self.frame = framenum;
2989 * self.nextthink = time + 0.1;
2990 * self.think = nextthink;
2994 fld_think = parser_find_field(parser, "think");
2995 fld_nextthink = parser_find_field(parser, "nextthink");
2996 fld_frame = parser_find_field(parser, "frame");
2997 if (!fld_think || !fld_nextthink || !fld_frame) {
2998 parseerror(parser, "cannot use [frame,think] notation without the required fields");
2999 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
3002 gbl_time = parser_find_global(parser, "time");
3003 gbl_self = parser_find_global(parser, "self");
3004 if (!gbl_time || !gbl_self) {
3005 parseerror(parser, "cannot use [frame,think] notation without the required globals");
3006 parseerror(parser, "please declare the following globals: `time`, `self`");
3010 if (!parser_next(parser))
3013 framenum = parse_expression_leave(parser, true);
3015 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
3018 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
3019 ast_unref(framenum);
3020 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
3024 if (parser->tok != ',') {
3025 ast_unref(framenum);
3026 parseerror(parser, "expected comma after frame number in [frame,think] notation");
3027 parseerror(parser, "Got a %i\n", parser->tok);
3031 if (!parser_next(parser)) {
3032 ast_unref(framenum);
3036 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
3038 /* qc allows the use of not-yet-declared functions here
3039 * - this automatically creates a prototype */
3040 ast_value *thinkfunc;
3041 ast_expression *functype = fld_think->expression.next;
3043 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
3044 if (!thinkfunc || !ast_type_adopt(thinkfunc, functype)) {
3045 ast_unref(framenum);
3046 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
3050 if (!parser_next(parser)) {
3051 ast_unref(framenum);
3052 ast_delete(thinkfunc);
3056 vec_push(parser->globals, (ast_expression*)thinkfunc);
3057 util_htset(parser->htglobals, thinkfunc->name, thinkfunc);
3058 nextthink = (ast_expression*)thinkfunc;
3061 nextthink = parse_expression_leave(parser, true);
3063 ast_unref(framenum);
3064 parseerror(parser, "expected a think-function in [frame,think] notation");
3069 if (!ast_istype(nextthink, ast_value)) {
3070 parseerror(parser, "think-function in [frame,think] notation must be a constant");
3074 if (retval && parser->tok != ']') {
3075 parseerror(parser, "expected closing `]` for [frame,think] notation");
3079 if (retval && !parser_next(parser)) {
3083 if (retval && parser->tok != '{') {
3084 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
3089 ast_unref(nextthink);
3090 ast_unref(framenum);
3094 has_frame_think = true;
3097 block = ast_block_new(parser_ctx(parser));
3099 parseerror(parser, "failed to allocate block");
3100 if (has_frame_think) {
3101 ast_unref(nextthink);
3102 ast_unref(framenum);
3107 if (has_frame_think) {
3109 ast_expression *self_frame;
3110 ast_expression *self_nextthink;
3111 ast_expression *self_think;
3112 ast_expression *time_plus_1;
3113 ast_store *store_frame;
3114 ast_store *store_nextthink;
3115 ast_store *store_think;
3117 ctx = parser_ctx(parser);
3118 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
3119 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
3120 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
3122 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
3123 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
3125 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
3126 if (self_frame) ast_delete(self_frame);
3127 if (self_nextthink) ast_delete(self_nextthink);
3128 if (self_think) ast_delete(self_think);
3129 if (time_plus_1) ast_delete(time_plus_1);
3135 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
3136 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
3137 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
3140 ast_delete(self_frame);
3143 if (!store_nextthink) {
3144 ast_delete(self_nextthink);
3148 ast_delete(self_think);
3152 if (store_frame) ast_delete(store_frame);
3153 if (store_nextthink) ast_delete(store_nextthink);
3154 if (store_think) ast_delete(store_think);
3157 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
3158 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
3159 !ast_block_add_expr(block, (ast_expression*)store_think))
3166 parseerror(parser, "failed to generate code for [frame,think]");
3167 ast_unref(nextthink);
3168 ast_unref(framenum);
3174 parser_enterblock(parser);
3176 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
3178 ast_value *param = var->expression.params[parami];
3181 if (param->expression.vtype != TYPE_VECTOR &&
3182 (param->expression.vtype != TYPE_FIELD ||
3183 param->expression.next->expression.vtype != TYPE_VECTOR))
3188 if (!create_vector_members(param, me)) {
3189 ast_block_delete(block);
3193 for (e = 0; e < 3; ++e) {
3194 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
3195 ast_block_collect(block, (ast_expression*)me[e]);
3199 func = ast_function_new(ast_ctx(var), var->name, var);
3201 parseerror(parser, "failed to allocate function for `%s`", var->name);
3202 ast_block_delete(block);
3205 vec_push(parser->functions, func);
3207 parser->function = func;
3208 if (!parse_block_into(parser, block)) {
3209 ast_block_delete(block);
3213 vec_push(func->blocks, block);
3215 parser->function = old;
3216 if (!parser_leaveblock(parser))
3218 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
3219 parseerror(parser, "internal error: local scopes left");
3223 if (parser->tok == ';')
3224 return parser_next(parser);
3225 else if (opts.standard == COMPILER_QCC)
3226 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
3230 vec_pop(parser->functions);
3231 ast_function_delete(func);
3232 var->constval.vfunc = NULL;
3235 (void)!parser_leaveblock(parser);
3236 parser->function = old;
3240 static ast_expression *array_accessor_split(
3245 ast_expression *left,
3246 ast_expression *right
3252 lex_ctx ctx = ast_ctx(array);
3254 if (!left || !right) {
3255 if (left) ast_delete(left);
3256 if (right) ast_delete(right);
3260 cmp = ast_binary_new(ctx, INSTR_LT,
3261 (ast_expression*)index,
3262 (ast_expression*)parser_const_float(parser, middle));
3266 parseerror(parser, "internal error: failed to create comparison for array setter");
3270 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
3272 ast_delete(cmp); /* will delete left and right */
3273 parseerror(parser, "internal error: failed to create conditional jump for array setter");
3277 return (ast_expression*)ifthen;
3280 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
3282 lex_ctx ctx = ast_ctx(array);
3284 if (from+1 == afterend) {
3285 /* set this value */
3288 ast_array_index *subscript;
3290 int assignop = type_store_instr[value->expression.vtype];
3292 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3293 assignop = INSTR_STORE_V;
3295 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3299 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
3301 ast_delete(subscript);
3305 block = ast_block_new(ctx);
3311 if (!ast_block_add_expr(block, (ast_expression*)st)) {
3316 ret = ast_return_new(ctx, NULL);
3322 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
3327 return (ast_expression*)block;
3329 ast_expression *left, *right;
3330 size_t diff = afterend - from;
3331 size_t middle = from + diff/2;
3332 left = array_setter_node(parser, array, index, value, from, middle);
3333 right = array_setter_node(parser, array, index, value, middle, afterend);
3334 return array_accessor_split(parser, array, index, middle, left, right);
3338 static ast_expression *array_field_setter_node(
3347 lex_ctx ctx = ast_ctx(array);
3349 if (from+1 == afterend) {
3350 /* set this value */
3353 ast_entfield *entfield;
3354 ast_array_index *subscript;
3356 int assignop = type_storep_instr[value->expression.vtype];
3358 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3359 assignop = INSTR_STOREP_V;
3361 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3365 entfield = ast_entfield_new_force(ctx,
3366 (ast_expression*)entity,
3367 (ast_expression*)subscript,
3368 (ast_expression*)subscript);
3370 ast_delete(subscript);
3374 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
3376 ast_delete(entfield);
3380 block = ast_block_new(ctx);
3386 if (!ast_block_add_expr(block, (ast_expression*)st)) {
3391 ret = ast_return_new(ctx, NULL);
3397 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
3402 return (ast_expression*)block;
3404 ast_expression *left, *right;
3405 size_t diff = afterend - from;
3406 size_t middle = from + diff/2;
3407 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
3408 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
3409 return array_accessor_split(parser, array, index, middle, left, right);
3413 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
3415 lex_ctx ctx = ast_ctx(array);
3417 if (from+1 == afterend) {
3419 ast_array_index *subscript;
3421 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3425 ret = ast_return_new(ctx, (ast_expression*)subscript);
3427 ast_delete(subscript);
3431 return (ast_expression*)ret;
3433 ast_expression *left, *right;
3434 size_t diff = afterend - from;
3435 size_t middle = from + diff/2;
3436 left = array_getter_node(parser, array, index, from, middle);
3437 right = array_getter_node(parser, array, index, middle, afterend);
3438 return array_accessor_split(parser, array, index, middle, left, right);
3442 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
3444 ast_function *func = NULL;
3445 ast_value *fval = NULL;
3446 ast_block *body = NULL;
3448 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
3450 parseerror(parser, "failed to create accessor function value");
3454 func = ast_function_new(ast_ctx(array), funcname, fval);
3457 parseerror(parser, "failed to create accessor function node");
3461 body = ast_block_new(ast_ctx(array));
3463 parseerror(parser, "failed to create block for array accessor");
3469 vec_push(func->blocks, body);
3472 vec_push(parser->accessors, fval);
3477 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
3479 ast_expression *root = NULL;
3480 ast_value *index = NULL;
3481 ast_value *value = NULL;
3485 if (!ast_istype(array->expression.next, ast_value)) {
3486 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3490 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3492 func = fval->constval.vfunc;
3493 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
3495 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3496 value = ast_value_copy((ast_value*)array->expression.next);
3498 if (!index || !value) {
3499 parseerror(parser, "failed to create locals for array accessor");
3502 (void)!ast_value_set_name(value, "value"); /* not important */
3503 vec_push(fval->expression.params, index);
3504 vec_push(fval->expression.params, value);
3506 root = array_setter_node(parser, array, index, value, 0, array->expression.count);
3508 parseerror(parser, "failed to build accessor search tree");
3512 array->setter = fval;
3513 return ast_block_add_expr(func->blocks[0], root);
3515 if (index) ast_delete(index);
3516 if (value) ast_delete(value);
3517 if (root) ast_delete(root);
3523 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
3525 ast_expression *root = NULL;
3526 ast_value *entity = NULL;
3527 ast_value *index = NULL;
3528 ast_value *value = NULL;
3532 if (!ast_istype(array->expression.next, ast_value)) {
3533 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3537 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3539 func = fval->constval.vfunc;
3540 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
3542 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
3543 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3544 value = ast_value_copy((ast_value*)array->expression.next);
3545 if (!entity || !index || !value) {
3546 parseerror(parser, "failed to create locals for array accessor");
3549 (void)!ast_value_set_name(value, "value"); /* not important */
3550 vec_push(fval->expression.params, entity);
3551 vec_push(fval->expression.params, index);
3552 vec_push(fval->expression.params, value);
3554 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
3556 parseerror(parser, "failed to build accessor search tree");
3560 array->setter = fval;
3561 return ast_block_add_expr(func->blocks[0], root);
3563 if (entity) ast_delete(entity);
3564 if (index) ast_delete(index);
3565 if (value) ast_delete(value);
3566 if (root) ast_delete(root);
3572 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
3574 ast_expression *root = NULL;
3575 ast_value *index = NULL;
3579 /* NOTE: checking array->expression.next rather than elemtype since
3580 * for fields elemtype is a temporary fieldtype.
3582 if (!ast_istype(array->expression.next, ast_value)) {
3583 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3587 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3589 func = fval->constval.vfunc;
3590 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
3592 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3595 parseerror(parser, "failed to create locals for array accessor");
3598 vec_push(fval->expression.params, index);
3600 root = array_getter_node(parser, array, index, 0, array->expression.count);
3602 parseerror(parser, "failed to build accessor search tree");
3606 array->getter = fval;
3607 return ast_block_add_expr(func->blocks[0], root);
3609 if (index) ast_delete(index);
3610 if (root) ast_delete(root);
3616 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
3617 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
3625 bool variadic = false;
3627 ctx = parser_ctx(parser);
3629 /* for the sake of less code we parse-in in this function */
3630 if (!parser_next(parser)) {
3631 parseerror(parser, "expected parameter list");
3637 /* parse variables until we hit a closing paren */
3638 while (parser->tok != ')') {
3640 /* there must be commas between them */
3641 if (parser->tok != ',') {
3642 parseerror(parser, "expected comma or end of parameter list");
3645 if (!parser_next(parser)) {
3646 parseerror(parser, "expected parameter");
3652 if (parser->tok == TOKEN_DOTS) {
3653 /* '...' indicates a varargs function */
3655 if (!parser_next(parser)) {
3656 parseerror(parser, "expected parameter");
3659 if (parser->tok != ')') {
3660 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
3666 /* for anything else just parse a typename */
3667 param = parse_typename(parser, NULL, NULL);
3670 vec_push(params, param);
3671 if (param->expression.vtype >= TYPE_VARIANT) {
3672 char typename[1024];
3673 ast_type_to_string((ast_expression*)param, typename, sizeof(typename));
3674 parseerror(parser, "type not supported as part of a parameter list: %s", typename);
3680 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
3684 if (vec_size(params) > 8 && opts.standard == COMPILER_QCC)
3685 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
3688 if (!parser_next(parser)) {
3689 parseerror(parser, "parse error after typename");
3693 /* now turn 'var' into a function type */
3694 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
3695 fval->expression.next = (ast_expression*)var;
3697 fval->expression.flags |= AST_FLAG_VARIADIC;
3700 var->expression.params = params;
3707 for (i = 0; i < vec_size(params); ++i)
3708 ast_delete(params[i]);
3713 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
3715 ast_expression *cexp;
3716 ast_value *cval, *tmp;
3719 ctx = parser_ctx(parser);
3721 if (!parser_next(parser)) {
3723 parseerror(parser, "expected array-size");
3727 cexp = parse_expression_leave(parser, true);
3729 if (!cexp || !ast_istype(cexp, ast_value)) {
3733 parseerror(parser, "expected array-size as constant positive integer");
3736 cval = (ast_value*)cexp;
3738 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
3739 tmp->expression.next = (ast_expression*)var;
3742 if (cval->expression.vtype == TYPE_INTEGER)
3743 tmp->expression.count = cval->constval.vint;
3744 else if (cval->expression.vtype == TYPE_FLOAT)
3745 tmp->expression.count = cval->constval.vfloat;
3749 parseerror(parser, "array-size must be a positive integer constant");
3754 if (parser->tok != ']') {
3756 parseerror(parser, "expected ']' after array-size");
3759 if (!parser_next(parser)) {
3761 parseerror(parser, "error after parsing array size");
3767 /* Parse a complete typename.
3768 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
3769 * but when parsing variables separated by comma
3770 * 'storebase' should point to where the base-type should be kept.
3771 * The base type makes up every bit of type information which comes *before* the
3774 * The following will be parsed in its entirety:
3776 * The 'basetype' in this case is 'void()'
3777 * and if there's a comma after it, say:
3779 * then the type-information 'void()' can be stored in 'storebase'
3781 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
3783 ast_value *var, *tmp;
3786 const char *name = NULL;
3787 bool isfield = false;
3788 bool wasarray = false;
3789 size_t morefields = 0;
3791 ctx = parser_ctx(parser);
3793 /* types may start with a dot */
3794 if (parser->tok == '.') {
3796 /* if we parsed a dot we need a typename now */
3797 if (!parser_next(parser)) {
3798 parseerror(parser, "expected typename for field definition");
3802 /* Further dots are handled seperately because they won't be part of the
3805 while (parser->tok == '.') {
3807 if (!parser_next(parser)) {
3808 parseerror(parser, "expected typename for field definition");
3813 if (parser->tok == TOKEN_IDENT)
3814 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
3815 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
3816 parseerror(parser, "expected typename");
3820 /* generate the basic type value */
3821 if (cached_typedef) {
3822 var = ast_value_copy(cached_typedef);
3823 ast_value_set_name(var, "<type(from_def)>");
3825 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
3827 for (; morefields; --morefields) {
3828 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
3829 tmp->expression.next = (ast_expression*)var;
3833 /* do not yet turn into a field - remember:
3834 * .void() foo; is a field too
3835 * .void()() foo; is a function
3839 if (!parser_next(parser)) {
3841 parseerror(parser, "parse error after typename");
3845 /* an opening paren now starts the parameter-list of a function
3846 * this is where original-QC has parameter lists.
3847 * We allow a single parameter list here.
3848 * Much like fteqcc we don't allow `float()() x`
3850 if (parser->tok == '(') {
3851 var = parse_parameter_list(parser, var);
3856 /* store the base if requested */
3858 *storebase = ast_value_copy(var);
3860 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3861 tmp->expression.next = (ast_expression*)*storebase;
3866 /* there may be a name now */
3867 if (parser->tok == TOKEN_IDENT) {
3868 name = util_strdup(parser_tokval(parser));
3870 if (!parser_next(parser)) {
3872 parseerror(parser, "error after variable or field declaration");
3877 /* now this may be an array */
3878 if (parser->tok == '[') {
3880 var = parse_arraysize(parser, var);
3885 /* This is the point where we can turn it into a field */
3887 /* turn it into a field if desired */
3888 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3889 tmp->expression.next = (ast_expression*)var;
3893 /* now there may be function parens again */
3894 if (parser->tok == '(' && opts.standard == COMPILER_QCC)
3895 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3896 if (parser->tok == '(' && wasarray)
3897 parseerror(parser, "arrays as part of a return type is not supported");
3898 while (parser->tok == '(') {
3899 var = parse_parameter_list(parser, var);
3908 /* finally name it */
3910 if (!ast_value_set_name(var, name)) {
3912 parseerror(parser, "internal error: failed to set name");
3915 /* free the name, ast_value_set_name duplicates */
3922 static bool parse_typedef(parser_t *parser)
3924 ast_value *typevar, *oldtype;
3925 ast_expression *old;
3927 typevar = parse_typename(parser, NULL, NULL);
3932 if ( (old = parser_find_var(parser, typevar->name)) ) {
3933 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
3934 " -> `%s` has been declared here: %s:%i",
3935 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
3936 ast_delete(typevar);
3940 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
3941 parseerror(parser, "type `%s` has already been declared here: %s:%i",
3942 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
3943 ast_delete(typevar);
3947 vec_push(parser->_typedefs, typevar);
3948 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
3950 if (parser->tok != ';') {
3951 parseerror(parser, "expected semicolon after typedef");
3954 if (!parser_next(parser)) {
3955 parseerror(parser, "parse error after typedef");
3962 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref, bool noreturn)
3966 ast_expression *old;
3970 ast_value *basetype = NULL;
3972 bool isparam = false;
3973 bool isvector = false;
3974 bool cleanvar = true;
3975 bool wasarray = false;
3979 /* get the first complete variable */
3980 var = parse_typename(parser, &basetype, cached_typedef);
3983 ast_delete(basetype);
3991 /* Part 0: finish the type */
3992 if (parser->tok == '(') {
3993 if (opts.standard == COMPILER_QCC)
3994 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3995 var = parse_parameter_list(parser, var);
4001 /* we only allow 1-dimensional arrays */
4002 if (parser->tok == '[') {
4004 var = parse_arraysize(parser, var);
4010 if (parser->tok == '(' && wasarray) {
4011 parseerror(parser, "arrays as part of a return type is not supported");
4012 /* we'll still parse the type completely for now */
4014 /* for functions returning functions */
4015 while (parser->tok == '(') {
4016 if (opts.standard == COMPILER_QCC)
4017 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4018 var = parse_parameter_list(parser, var);
4025 var->cvq = qualifier;
4026 /* in a noref section we simply bump the usecount */
4027 if (noref || parser->noref)
4030 var->expression.flags |= AST_FLAG_NORETURN;
4033 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
4034 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
4035 * is then filled with the previous definition and the parameter-names replaced.
4038 /* Deal with end_sys_ vars */
4040 if (!strcmp(var->name, "end_sys_globals")) {
4042 parser->crc_globals = vec_size(parser->globals);
4045 else if (!strcmp(var->name, "end_sys_fields")) {
4047 parser->crc_fields = vec_size(parser->fields);
4050 if (was_end && var->expression.vtype == TYPE_FIELD) {
4051 if (parsewarning(parser, WARN_END_SYS_FIELDS,
4052 "global '%s' hint should not be a field",
4053 parser_tokval(parser)))
4060 if (!nofields && var->expression.vtype == TYPE_FIELD)
4062 /* deal with field declarations */
4063 old = parser_find_field(parser, var->name);
4065 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
4066 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
4075 parseerror(parser, "field `%s` already declared here: %s:%i",
4076 var->name, ast_ctx(old).file, ast_ctx(old).line);
4081 if (opts.standard == COMPILER_QCC &&
4082 (old = parser_find_global(parser, var->name)))
4084 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
4085 parseerror(parser, "field `%s` already declared here: %s:%i",
4086 var->name, ast_ctx(old).file, ast_ctx(old).line);
4093 /* deal with other globals */
4094 old = parser_find_global(parser, var->name);
4095 if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
4097 /* This is a function which had a prototype */
4098 if (!ast_istype(old, ast_value)) {
4099 parseerror(parser, "internal error: prototype is not an ast_value");
4103 proto = (ast_value*)old;
4104 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
4105 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
4107 ast_ctx(proto).file, ast_ctx(proto).line);
4111 /* we need the new parameter-names */
4112 for (i = 0; i < vec_size(proto->expression.params); ++i)
4113 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
4121 if (opts.standard == COMPILER_GMQCC) {
4122 parseerror(parser, "global `%s` already declared here: %s:%i",
4123 var->name, ast_ctx(old).file, ast_ctx(old).line);
4127 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
4128 "global `%s` already declared here: %s:%i",
4129 var->name, ast_ctx(old).file, ast_ctx(old).line))
4134 proto = (ast_value*)old;
4135 if (!ast_istype(old, ast_value)) {
4136 parseerror(parser, "internal error: not an ast_value");
4145 if (opts.standard == COMPILER_QCC &&
4146 (old = parser_find_field(parser, var->name)))
4148 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
4149 parseerror(parser, "global `%s` already declared here: %s:%i",
4150 var->name, ast_ctx(old).file, ast_ctx(old).line);
4157 else /* it's not a global */
4159 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
4160 if (old && !isparam) {
4161 parseerror(parser, "local `%s` already declared here: %s:%i",
4162 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
4166 old = parser_find_local(parser, var->name, 0, &isparam);
4167 if (old && isparam) {
4168 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
4169 "local `%s` is shadowing a parameter", var->name))
4171 parseerror(parser, "local `%s` already declared here: %s:%i",
4172 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
4176 if (opts.standard != COMPILER_GMQCC) {
4185 * Create the global/local, and deal with vector types.
4188 if (var->expression.vtype == TYPE_VECTOR)
4190 else if (var->expression.vtype == TYPE_FIELD &&
4191 var->expression.next->expression.vtype == TYPE_VECTOR)
4195 if (!create_vector_members(var, me)) {
4202 /* deal with global variables, fields, functions */
4203 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
4204 var->isfield = true;
4205 vec_push(parser->fields, (ast_expression*)var);
4206 util_htset(parser->htfields, var->name, var);
4208 for (i = 0; i < 3; ++i) {
4209 vec_push(parser->fields, (ast_expression*)me[i]);
4210 util_htset(parser->htfields, me[i]->name, me[i]);
4215 vec_push(parser->globals, (ast_expression*)var);
4216 util_htset(parser->htglobals, var->name, var);
4218 for (i = 0; i < 3; ++i) {
4219 vec_push(parser->globals, (ast_expression*)me[i]);
4220 util_htset(parser->htglobals, me[i]->name, me[i]);
4225 vec_push(localblock->locals, var);
4226 parser_addlocal(parser, var->name, (ast_expression*)var);
4228 for (i = 0; i < 3; ++i) {
4229 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
4230 ast_block_collect(localblock, (ast_expression*)me[i]);
4236 me[0] = me[1] = me[2] = NULL;
4241 if (var->expression.vtype == TYPE_ARRAY) {
4243 snprintf(name, sizeof(name), "%s##SET", var->name);
4244 if (!parser_create_array_setter(parser, var, name))
4246 snprintf(name, sizeof(name), "%s##GET", var->name);
4247 if (!parser_create_array_getter(parser, var, var->expression.next, name))
4250 else if (!localblock && !nofields &&
4251 var->expression.vtype == TYPE_FIELD &&
4252 var->expression.next->expression.vtype == TYPE_ARRAY)
4255 ast_expression *telem;
4257 ast_value *array = (ast_value*)var->expression.next;
4259 if (!ast_istype(var->expression.next, ast_value)) {
4260 parseerror(parser, "internal error: field element type must be an ast_value");
4264 snprintf(name, sizeof(name), "%s##SETF", var->name);
4265 if (!parser_create_array_field_setter(parser, array, name))
4268 telem = ast_type_copy(ast_ctx(var), array->expression.next);
4269 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
4270 tfield->expression.next = telem;
4271 snprintf(name, sizeof(name), "%s##GETFP", var->name);
4272 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
4280 if (parser->tok == ';') {
4281 ast_delete(basetype);
4282 if (!parser_next(parser)) {
4283 parseerror(parser, "error after variable declaration");
4289 if (parser->tok == ',')
4293 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
4296 parseerror(parser, "missing comma or semicolon while parsing variables");
4300 if (localblock && opts.standard == COMPILER_QCC) {
4301 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
4302 "initializing expression turns variable `%s` into a constant in this standard",
4309 if (parser->tok != '{') {
4310 if (parser->tok != '=') {
4311 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
4315 if (!parser_next(parser)) {
4316 parseerror(parser, "error parsing initializer");
4320 else if (opts.standard == COMPILER_QCC) {
4321 parseerror(parser, "expected '=' before function body in this standard");
4324 if (parser->tok == '#') {
4325 ast_function *func = NULL;
4328 parseerror(parser, "cannot declare builtins within functions");
4331 if (var->expression.vtype != TYPE_FUNCTION) {
4332 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
4335 if (!parser_next(parser)) {
4336 parseerror(parser, "expected builtin number");
4339 if (parser->tok != TOKEN_INTCONST) {
4340 parseerror(parser, "builtin number must be an integer constant");
4343 if (parser_token(parser)->constval.i < 0) {
4344 parseerror(parser, "builtin number must be an integer greater than zero");
4348 if (var->hasvalue) {
4349 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
4350 "builtin `%s` has already been defined\n"
4351 " -> previous declaration here: %s:%i",
4352 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
4356 func = ast_function_new(ast_ctx(var), var->name, var);
4358 parseerror(parser, "failed to allocate function for `%s`", var->name);
4361 vec_push(parser->functions, func);
4363 func->builtin = -parser_token(parser)->constval.i-1;
4366 if (!parser_next(parser)) {
4367 parseerror(parser, "expected comma or semicolon");
4369 ast_function_delete(func);
4370 var->constval.vfunc = NULL;
4374 else if (parser->tok == '{' || parser->tok == '[')
4377 parseerror(parser, "cannot declare functions within functions");
4382 ast_ctx(proto) = parser_ctx(parser);
4384 if (!parse_function_body(parser, var))
4386 ast_delete(basetype);
4387 for (i = 0; i < vec_size(parser->gotos); ++i)
4388 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
4389 vec_free(parser->gotos);
4390 vec_free(parser->labels);
4393 ast_expression *cexp;
4396 cexp = parse_expression_leave(parser, true);
4401 cval = (ast_value*)cexp;
4402 if (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
4403 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
4406 if (opts.standard != COMPILER_GMQCC &&
4407 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
4408 qualifier != CV_VAR)
4410 var->cvq = CV_CONST;
4412 var->hasvalue = true;
4413 if (cval->expression.vtype == TYPE_STRING)
4414 var->constval.vstring = parser_strdup(cval->constval.vstring);
4415 else if (cval->expression.vtype == TYPE_FIELD)
4416 var->constval.vfield = cval;
4418 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
4423 shunt sy = { NULL, NULL };
4426 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
4427 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
4428 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
4429 if (!parser_sy_apply_operator(parser, &sy))
4432 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
4433 parseerror(parser, "internal error: leaked operands");
4434 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
4444 if (parser->tok == ',') {
4445 if (!parser_next(parser)) {
4446 parseerror(parser, "expected another variable");
4450 if (parser->tok != TOKEN_IDENT) {
4451 parseerror(parser, "expected another variable");
4454 var = ast_value_copy(basetype);
4456 ast_value_set_name(var, parser_tokval(parser));
4457 if (!parser_next(parser)) {
4458 parseerror(parser, "error parsing variable declaration");
4464 if (parser->tok != ';') {
4465 parseerror(parser, "missing semicolon after variables");
4469 if (!parser_next(parser)) {
4470 parseerror(parser, "parse error after variable declaration");
4474 ast_delete(basetype);
4478 if (cleanvar && var)
4480 ast_delete(basetype);
4484 ast_delete(basetype);
4485 if (cleanvar && var)
4487 if (me[0]) ast_member_delete(me[0]);
4488 if (me[1]) ast_member_delete(me[1]);
4489 if (me[2]) ast_member_delete(me[2]);
4493 static bool parser_global_statement(parser_t *parser)
4497 bool noreturn = false;
4498 ast_value *istype = NULL;
4500 if (parser->tok == TOKEN_IDENT)
4501 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
4503 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
4505 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false);
4507 else if (parse_var_qualifiers(parser, false, &cvq, &noref, &noreturn))
4509 if (cvq == CV_WRONG)
4511 return parse_variable(parser, NULL, true, cvq, NULL, noref, noreturn);
4513 else if (parser->tok == TOKEN_KEYWORD)
4515 if (!strcmp(parser_tokval(parser), "typedef")) {
4516 if (!parser_next(parser)) {
4517 parseerror(parser, "expected type definition after 'typedef'");
4520 return parse_typedef(parser);
4522 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
4525 else if (parser->tok == '#')
4527 return parse_pragma(parser);
4529 else if (parser->tok == '$')
4531 if (!parser_next(parser)) {
4532 parseerror(parser, "parse error");
4538 parseerror(parser, "unexpected token: %s", parser->lex->tok.value);
4544 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
4546 return util_crc16(old, str, strlen(str));
4549 static void progdefs_crc_file(const char *str)
4551 /* write to progdefs.h here */
4555 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
4557 old = progdefs_crc_sum(old, str);
4558 progdefs_crc_file(str);
4562 static void generate_checksum(parser_t *parser)
4564 uint16_t crc = 0xFFFF;
4568 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
4569 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
4571 progdefs_crc_file("\tint\tpad;\n");
4572 progdefs_crc_file("\tint\tofs_return[3];\n");
4573 progdefs_crc_file("\tint\tofs_parm0[3];\n");
4574 progdefs_crc_file("\tint\tofs_parm1[3];\n");
4575 progdefs_crc_file("\tint\tofs_parm2[3];\n");
4576 progdefs_crc_file("\tint\tofs_parm3[3];\n");
4577 progdefs_crc_file("\tint\tofs_parm4[3];\n");
4578 progdefs_crc_file("\tint\tofs_parm5[3];\n");
4579 progdefs_crc_file("\tint\tofs_parm6[3];\n");
4580 progdefs_crc_file("\tint\tofs_parm7[3];\n");
4582 for (i = 0; i < parser->crc_globals; ++i) {
4583 if (!ast_istype(parser->globals[i], ast_value))
4585 value = (ast_value*)(parser->globals[i]);
4586 switch (value->expression.vtype) {
4587 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
4588 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
4589 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
4590 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
4592 crc = progdefs_crc_both(crc, "\tint\t");
4595 crc = progdefs_crc_both(crc, value->name);
4596 crc = progdefs_crc_both(crc, ";\n");
4598 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
4599 for (i = 0; i < parser->crc_fields; ++i) {
4600 if (!ast_istype(parser->fields[i], ast_value))
4602 value = (ast_value*)(parser->fields[i]);
4603 switch (value->expression.next->expression.vtype) {
4604 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
4605 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
4606 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
4607 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
4609 crc = progdefs_crc_both(crc, "\tint\t");
4612 crc = progdefs_crc_both(crc, value->name);
4613 crc = progdefs_crc_both(crc, ";\n");
4615 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
4620 static parser_t *parser;
4626 parser = (parser_t*)mem_a(sizeof(parser_t));
4630 memset(parser, 0, sizeof(*parser));
4632 for (i = 0; i < operator_count; ++i) {
4633 if (operators[i].id == opid1('=')) {
4634 parser->assign_op = operators+i;
4638 if (!parser->assign_op) {
4639 printf("internal error: initializing parser: failed to find assign operator\n");
4644 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
4645 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
4646 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
4647 vec_push(parser->_blocktypedefs, 0);
4651 bool parser_compile()
4653 /* initial lexer/parser state */
4654 parser->lex->flags.noops = true;
4656 if (parser_next(parser))
4658 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
4660 if (!parser_global_statement(parser)) {
4661 if (parser->tok == TOKEN_EOF)
4662 parseerror(parser, "unexpected eof");
4663 else if (!parser->errors)
4664 parseerror(parser, "there have been errors, bailing out");
4665 lex_close(parser->lex);
4671 parseerror(parser, "parse error");
4672 lex_close(parser->lex);
4677 lex_close(parser->lex);
4680 return !parser->errors;
4683 bool parser_compile_file(const char *filename)
4685 parser->lex = lex_open(filename);
4687 con_err("failed to open file \"%s\"\n", filename);
4690 return parser_compile();
4693 bool parser_compile_string_len(const char *name, const char *str, size_t len)
4695 parser->lex = lex_open_string(str, len, name);
4697 con_err("failed to create lexer for string \"%s\"\n", name);
4700 return parser_compile();
4703 bool parser_compile_string(const char *name, const char *str)
4705 parser->lex = lex_open_string(str, strlen(str), name);
4707 con_err("failed to create lexer for string \"%s\"\n", name);
4710 return parser_compile();
4713 void parser_cleanup()
4716 for (i = 0; i < vec_size(parser->accessors); ++i) {
4717 ast_delete(parser->accessors[i]->constval.vfunc);
4718 parser->accessors[i]->constval.vfunc = NULL;
4719 ast_delete(parser->accessors[i]);
4721 for (i = 0; i < vec_size(parser->functions); ++i) {
4722 ast_delete(parser->functions[i]);
4724 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
4725 ast_delete(parser->imm_vector[i]);
4727 for (i = 0; i < vec_size(parser->imm_string); ++i) {
4728 ast_delete(parser->imm_string[i]);
4730 for (i = 0; i < vec_size(parser->imm_float); ++i) {
4731 ast_delete(parser->imm_float[i]);
4733 for (i = 0; i < vec_size(parser->fields); ++i) {
4734 ast_delete(parser->fields[i]);
4736 for (i = 0; i < vec_size(parser->globals); ++i) {
4737 ast_delete(parser->globals[i]);
4739 vec_free(parser->accessors);
4740 vec_free(parser->functions);
4741 vec_free(parser->imm_vector);
4742 vec_free(parser->imm_string);
4743 vec_free(parser->imm_float);
4744 vec_free(parser->globals);
4745 vec_free(parser->fields);
4747 for (i = 0; i < vec_size(parser->variables); ++i)
4748 util_htdel(parser->variables[i]);
4749 vec_free(parser->variables);
4750 vec_free(parser->_blocklocals);
4751 vec_free(parser->_locals);
4753 for (i = 0; i < vec_size(parser->_typedefs); ++i)
4754 ast_delete(parser->_typedefs[i]);
4755 vec_free(parser->_typedefs);
4756 for (i = 0; i < vec_size(parser->typedefs); ++i)
4757 util_htdel(parser->typedefs[i]);
4758 vec_free(parser->typedefs);
4759 vec_free(parser->_blocktypedefs);
4761 vec_free(parser->_block_ctx);
4763 vec_free(parser->labels);
4764 vec_free(parser->gotos);
4769 bool parser_finish(const char *output)
4775 if (!parser->errors)
4777 ir = ir_builder_new("gmqcc_out");
4779 con_out("failed to allocate builder\n");
4783 for (i = 0; i < vec_size(parser->fields); ++i) {
4786 if (!ast_istype(parser->fields[i], ast_value))
4788 field = (ast_value*)parser->fields[i];
4789 hasvalue = field->hasvalue;
4790 field->hasvalue = false;
4791 if (!ast_global_codegen((ast_value*)field, ir, true)) {
4792 con_out("failed to generate field %s\n", field->name);
4793 ir_builder_delete(ir);
4798 ast_expression *subtype;
4799 field->hasvalue = true;
4800 subtype = field->expression.next;
4801 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
4802 if (subtype->expression.vtype == TYPE_FIELD)
4803 ifld->fieldtype = subtype->expression.next->expression.vtype;
4804 else if (subtype->expression.vtype == TYPE_FUNCTION)
4805 ifld->outtype = subtype->expression.next->expression.vtype;
4806 (void)!ir_value_set_field(field->ir_v, ifld);
4809 for (i = 0; i < vec_size(parser->globals); ++i) {
4811 if (!ast_istype(parser->globals[i], ast_value))
4813 asvalue = (ast_value*)(parser->globals[i]);
4814 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
4815 retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
4816 "unused global: `%s`", asvalue->name);
4818 if (!ast_global_codegen(asvalue, ir, false)) {
4819 con_out("failed to generate global %s\n", asvalue->name);
4820 ir_builder_delete(ir);
4824 for (i = 0; i < vec_size(parser->imm_float); ++i) {
4825 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
4826 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
4827 ir_builder_delete(ir);
4831 for (i = 0; i < vec_size(parser->imm_string); ++i) {
4832 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
4833 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
4834 ir_builder_delete(ir);
4838 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
4839 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
4840 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
4841 ir_builder_delete(ir);
4845 for (i = 0; i < vec_size(parser->globals); ++i) {
4847 if (!ast_istype(parser->globals[i], ast_value))
4849 asvalue = (ast_value*)(parser->globals[i]);
4850 if (!ast_generate_accessors(asvalue, ir)) {
4851 ir_builder_delete(ir);
4855 for (i = 0; i < vec_size(parser->fields); ++i) {
4857 asvalue = (ast_value*)(parser->fields[i]->expression.next);
4859 if (!ast_istype((ast_expression*)asvalue, ast_value))
4861 if (asvalue->expression.vtype != TYPE_ARRAY)
4863 if (!ast_generate_accessors(asvalue, ir)) {
4864 ir_builder_delete(ir);
4868 for (i = 0; i < vec_size(parser->functions); ++i) {
4869 if (!ast_function_codegen(parser->functions[i], ir)) {
4870 con_out("failed to generate function %s\n", parser->functions[i]->name);
4871 ir_builder_delete(ir);
4876 ir_builder_dump(ir, con_out);
4877 for (i = 0; i < vec_size(parser->functions); ++i) {
4878 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
4879 con_out("failed to finalize function %s\n", parser->functions[i]->name);
4880 ir_builder_delete(ir);
4887 ir_builder_dump(ir, con_out);
4889 generate_checksum(parser);
4891 if (!ir_builder_generate(ir, output)) {
4892 con_out("*** failed to generate output file\n");
4893 ir_builder_delete(ir);
4898 ir_builder_delete(ir);
4902 con_out("*** there were compile errors\n");