2 * Copyright (C) 2012, 2013
6 * Permission is hereby granted, free of charge, to any person obtaining a copy of
7 * this software and associated documentation files (the "Software"), to deal in
8 * the Software without restriction, including without limitation the rights to
9 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
10 * of the Software, and to permit persons to whom the Software is furnished to do
11 * so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in all
14 * copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31 /* beginning of locals */
32 #define PARSER_HT_LOCALS 2
34 #define PARSER_HT_SIZE 1024
35 #define TYPEDEF_HT_SIZE 16
37 enum parser_pot { POT_PAREN, POT_TERNARY1, POT_TERNARY2 };
42 ast_expression **globals;
43 ast_expression **fields;
44 ast_function **functions;
45 ast_value **imm_float;
46 ast_value **imm_string;
47 ast_value **imm_vector;
50 /* must be deleted first, they reference immediates and values */
51 ast_value **accessors;
53 ast_value *imm_float_zero;
54 ast_value *imm_float_one;
55 ast_value *imm_vector_zero;
57 ast_value *reserved_version;
62 ast_function *function;
64 /* All the labels the function defined...
65 * Should they be in ast_function instead?
70 const char **continues;
72 /* A list of hashtables for each scope */
78 /* same as above but for the spelling corrector */
79 correct_trie_t **correct_variables;
80 size_t ***correct_variables_score; /* vector of vector of size_t* */
82 /* not to be used directly, we use the hash table */
83 ast_expression **_locals;
85 ast_value **_typedefs;
86 size_t *_blocktypedefs;
89 /* we store the '=' operator info */
90 const oper_info *assign_op;
92 /* Keep track of our ternary vs parenthesis nesting state.
93 * If we reach a 'comma' operator in a ternary without a paren,
94 * we shall trigger -Wternary-precedence.
99 ast_value *const_vec[3];
105 static const ast_expression *intrinsic_debug_typestring = (ast_expression*)0x10;
107 static void parser_enterblock(parser_t *parser);
108 static bool parser_leaveblock(parser_t *parser);
109 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e);
110 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e);
111 static bool parse_typedef(parser_t *parser);
112 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref, bool is_static, uint32_t qflags, char *vstring);
113 static ast_block* parse_block(parser_t *parser);
114 static bool parse_block_into(parser_t *parser, ast_block *block);
115 static bool parse_statement_or_block(parser_t *parser, ast_expression **out);
116 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases);
117 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels);
118 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels);
120 static void parseerror(parser_t *parser, const char *fmt, ...)
124 vcompile_error(parser->lex->tok.ctx, fmt, ap);
128 /* returns true if it counts as an error */
129 static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
134 r = vcompile_warning(parser->lex->tok.ctx, warntype, fmt, ap);
139 static bool GMQCC_WARN genwarning(lex_ctx ctx, int warntype, const char *fmt, ...)
144 r = vcompile_warning(ctx, warntype, fmt, ap);
149 /**********************************************************************
150 * some maths used for constant folding
153 vector vec3_add(vector a, vector b)
162 vector vec3_sub(vector a, vector b)
171 qcfloat vec3_mulvv(vector a, vector b)
173 return (a.x * b.x + a.y * b.y + a.z * b.z);
176 vector vec3_mulvf(vector a, float b)
185 /**********************************************************************
189 bool parser_next(parser_t *parser)
191 /* lex_do kills the previous token */
192 parser->tok = lex_do(parser->lex);
193 if (parser->tok == TOKEN_EOF)
195 if (parser->tok >= TOKEN_ERROR) {
196 parseerror(parser, "lex error");
202 #define parser_tokval(p) ((p)->lex->tok.value)
203 #define parser_token(p) (&((p)->lex->tok))
204 #define parser_ctx(p) ((p)->lex->tok.ctx)
206 static ast_value* parser_const_float(parser_t *parser, double d)
210 for (i = 0; i < vec_size(parser->imm_float); ++i) {
211 const double compare = parser->imm_float[i]->constval.vfloat;
212 if (memcmp((const void*)&compare, (const void *)&d, sizeof(double)) == 0)
213 return parser->imm_float[i];
215 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_FLOAT);
217 out->hasvalue = true;
218 out->constval.vfloat = d;
219 vec_push(parser->imm_float, out);
223 static ast_value* parser_const_float_0(parser_t *parser)
225 if (!parser->imm_float_zero)
226 parser->imm_float_zero = parser_const_float(parser, 0);
227 return parser->imm_float_zero;
230 static ast_value* parser_const_float_1(parser_t *parser)
232 if (!parser->imm_float_one)
233 parser->imm_float_one = parser_const_float(parser, 1);
234 return parser->imm_float_one;
237 static char *parser_strdup(const char *str)
240 /* actually dup empty strings */
241 char *out = (char*)mem_a(1);
245 return util_strdup(str);
248 static ast_value* parser_const_string(parser_t *parser, const char *str, bool dotranslate)
252 for (i = 0; i < vec_size(parser->imm_string); ++i) {
253 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
254 return parser->imm_string[i];
258 snprintf(name, sizeof(name), "dotranslate_%lu", (unsigned long)(parser->translated++));
259 out = ast_value_new(parser_ctx(parser), name, TYPE_STRING);
261 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
263 out->hasvalue = true;
264 out->constval.vstring = parser_strdup(str);
265 vec_push(parser->imm_string, out);
269 static ast_value* parser_const_vector(parser_t *parser, vector v)
273 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
274 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
275 return parser->imm_vector[i];
277 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
279 out->hasvalue = true;
280 out->constval.vvec = v;
281 vec_push(parser->imm_vector, out);
285 static ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
291 return parser_const_vector(parser, v);
294 static ast_value* parser_const_vector_0(parser_t *parser)
296 if (!parser->imm_vector_zero)
297 parser->imm_vector_zero = parser_const_vector_f(parser, 0, 0, 0);
298 return parser->imm_vector_zero;
301 static ast_expression* parser_find_field(parser_t *parser, const char *name)
303 return ( ast_expression*)util_htget(parser->htfields, name);
306 static ast_expression* parser_find_label(parser_t *parser, const char *name)
309 for(i = 0; i < vec_size(parser->labels); i++)
310 if (!strcmp(parser->labels[i]->name, name))
311 return (ast_expression*)parser->labels[i];
315 static ast_expression* parser_find_global(parser_t *parser, const char *name)
317 return (ast_expression*)util_htget(parser->htglobals, name);
320 static ast_expression* parser_find_param(parser_t *parser, const char *name)
324 if (!parser->function)
326 fun = parser->function->vtype;
327 for (i = 0; i < vec_size(fun->expression.params); ++i) {
328 if (!strcmp(fun->expression.params[i]->name, name))
329 return (ast_expression*)(fun->expression.params[i]);
334 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
339 hash = util_hthash(parser->htglobals, name);
342 for (i = vec_size(parser->variables); i > upto;) {
344 if ( (e = (ast_expression*)util_htgeth(parser->variables[i], name, hash)) )
348 return parser_find_param(parser, name);
351 static ast_expression* parser_find_var(parser_t *parser, const char *name)
355 v = parser_find_local(parser, name, 0, &dummy);
356 if (!v) v = parser_find_global(parser, name);
360 static ast_value* parser_find_typedef(parser_t *parser, const char *name, size_t upto)
364 hash = util_hthash(parser->typedefs[0], name);
366 for (i = vec_size(parser->typedefs); i > upto;) {
368 if ( (e = (ast_value*)util_htgeth(parser->typedefs[i], name, hash)) )
376 size_t etype; /* 0 = expression, others are operators */
380 ast_block *block; /* for commas and function calls */
389 #define SY_PAREN_EXPR '('
390 #define SY_PAREN_FUNC 'f'
391 #define SY_PAREN_INDEX '['
392 #define SY_PAREN_TERNARY '?'
394 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
405 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
409 e.out = (ast_expression*)v;
416 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
418 e.etype = 1 + (op - operators);
427 static sy_elem syparen(lex_ctx ctx, int p, size_t off) {
439 # define DEBUGSHUNTDO(x) x
441 # define DEBUGSHUNTDO(x)
444 /* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
445 * so we need to rotate it to become ent.(foo[n]).
447 static bool rotate_entfield_array_index_nodes(ast_expression **out)
449 ast_array_index *index;
450 ast_entfield *entfield;
454 ast_expression *entity;
456 lex_ctx ctx = ast_ctx(*out);
458 if (!ast_istype(*out, ast_array_index))
460 index = (ast_array_index*)*out;
462 if (!ast_istype(index->array, ast_entfield))
464 entfield = (ast_entfield*)index->array;
466 if (!ast_istype(entfield->field, ast_value))
468 field = (ast_value*)entfield->field;
471 entity = entfield->entity;
475 index = ast_array_index_new(ctx, (ast_expression*)field, sub);
476 entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
477 *out = (ast_expression*)entfield;
482 static bool immediate_is_true(lex_ctx ctx, ast_value *v)
484 switch (v->expression.vtype) {
486 return !!v->constval.vfloat;
488 return !!v->constval.vint;
490 if (OPTS_FLAG(CORRECT_LOGIC))
491 return v->constval.vvec.x &&
492 v->constval.vvec.y &&
495 return !!(v->constval.vvec.x);
497 if (!v->constval.vstring)
499 if (v->constval.vstring && OPTS_FLAG(TRUE_EMPTY_STRINGS))
501 return !!v->constval.vstring[0];
503 compile_error(ctx, "internal error: immediate_is_true on invalid type");
504 return !!v->constval.vfunc;
508 static bool parser_sy_apply_operator(parser_t *parser, shunt *sy)
512 ast_expression *out = NULL;
513 ast_expression *exprs[3];
514 ast_block *blocks[3];
515 ast_value *asvalue[3];
516 ast_binstore *asbinstore;
517 size_t i, assignop, addop, subop;
518 qcint generated_op = 0;
523 if (!vec_size(sy->ops)) {
524 parseerror(parser, "internal error: missing operator");
528 if (vec_last(sy->ops).paren) {
529 parseerror(parser, "unmatched parenthesis");
533 op = &operators[vec_last(sy->ops).etype - 1];
534 ctx = vec_last(sy->ops).ctx;
536 DEBUGSHUNTDO(con_out("apply %s\n", op->op));
538 if (vec_size(sy->out) < op->operands) {
539 parseerror(parser, "internal error: not enough operands: %i (operator %s (%i))", vec_size(sy->out),
540 op->op, (int)op->id);
544 vec_shrinkby(sy->ops, 1);
546 /* op(:?) has no input and no output */
550 vec_shrinkby(sy->out, op->operands);
551 for (i = 0; i < op->operands; ++i) {
552 exprs[i] = sy->out[vec_size(sy->out)+i].out;
553 blocks[i] = sy->out[vec_size(sy->out)+i].block;
554 asvalue[i] = (ast_value*)exprs[i];
556 if (exprs[i]->expression.vtype == TYPE_NOEXPR &&
557 !(i != 0 && op->id == opid2('?',':')) &&
558 !(i == 1 && op->id == opid1('.')))
560 if (ast_istype(exprs[i], ast_label))
561 compile_error(ast_ctx(exprs[i]), "expected expression, got an unknown identifier");
563 compile_error(ast_ctx(exprs[i]), "not an expression");
564 (void)!compile_warning(ast_ctx(exprs[i]), WARN_DEBUG, "expression %u\n", (unsigned int)i);
568 if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
569 parseerror(parser, "internal error: operator cannot be applied on empty blocks");
573 #define NotSameType(T) \
574 (exprs[0]->expression.vtype != exprs[1]->expression.vtype || \
575 exprs[0]->expression.vtype != T)
576 #define CanConstFold1(A) \
577 (ast_istype((A), ast_value) && ((ast_value*)(A))->hasvalue && (((ast_value*)(A))->cvq == CV_CONST) &&\
578 (A)->expression.vtype != TYPE_FUNCTION)
579 #define CanConstFold(A, B) \
580 (CanConstFold1(A) && CanConstFold1(B))
581 #define ConstV(i) (asvalue[(i)]->constval.vvec)
582 #define ConstF(i) (asvalue[(i)]->constval.vfloat)
583 #define ConstS(i) (asvalue[(i)]->constval.vstring)
587 parseerror(parser, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
591 if (exprs[0]->expression.vtype == TYPE_VECTOR &&
592 exprs[1]->expression.vtype == TYPE_NOEXPR)
594 if (exprs[1] == (ast_expression*)parser->const_vec[0])
595 out = (ast_expression*)ast_member_new(ctx, exprs[0], 0, NULL);
596 else if (exprs[1] == (ast_expression*)parser->const_vec[1])
597 out = (ast_expression*)ast_member_new(ctx, exprs[0], 1, NULL);
598 else if (exprs[1] == (ast_expression*)parser->const_vec[2])
599 out = (ast_expression*)ast_member_new(ctx, exprs[0], 2, NULL);
601 parseerror(parser, "access to invalid vector component");
605 else if (exprs[0]->expression.vtype == TYPE_ENTITY) {
606 if (exprs[1]->expression.vtype != TYPE_FIELD) {
607 parseerror(parser, "type error: right hand of member-operand should be an entity-field");
610 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
612 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
613 parseerror(parser, "vectors cannot be accessed this way");
617 parseerror(parser, "type error: member-of operator on something that is not an entity or vector");
623 if (exprs[0]->expression.vtype != TYPE_ARRAY &&
624 !(exprs[0]->expression.vtype == TYPE_FIELD &&
625 exprs[0]->expression.next->expression.vtype == TYPE_ARRAY))
627 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
628 parseerror(parser, "cannot index value of type %s", ty1);
631 if (exprs[1]->expression.vtype != TYPE_FLOAT) {
632 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
633 parseerror(parser, "index must be of type float, not %s", ty1);
636 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
637 if (rotate_entfield_array_index_nodes(&out))
640 /* This is not broken in fteqcc anymore */
641 if (opts.standard != COMPILER_GMQCC) {
642 /* this error doesn't need to make us bail out */
643 (void)!parsewarning(parser, WARN_EXTENSIONS,
644 "accessing array-field members of an entity without parenthesis\n"
645 " -> this is an extension from -std=gmqcc");
653 if (!ast_block_add_expr(blocks[0], exprs[1]))
656 blocks[0] = ast_block_new(ctx);
657 if (!ast_block_add_expr(blocks[0], exprs[0]) ||
658 !ast_block_add_expr(blocks[0], exprs[1]))
663 if (!ast_block_set_type(blocks[0], exprs[1]))
666 vec_push(sy->out, syblock(ctx, blocks[0]));
673 switch (exprs[0]->expression.vtype) {
675 if (CanConstFold1(exprs[0]))
676 out = (ast_expression*)parser_const_float(parser, -ConstF(0));
678 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
679 (ast_expression*)parser_const_float_0(parser),
683 if (CanConstFold1(exprs[0]))
684 out = (ast_expression*)parser_const_vector_f(parser,
685 -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
687 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
688 (ast_expression*)parser_const_vector_0(parser),
692 parseerror(parser, "invalid types used in expression: cannot negate type %s",
693 type_name[exprs[0]->expression.vtype]);
699 switch (exprs[0]->expression.vtype) {
701 if (CanConstFold1(exprs[0]))
702 out = (ast_expression*)parser_const_float(parser, !ConstF(0));
704 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
707 if (CanConstFold1(exprs[0]))
708 out = (ast_expression*)parser_const_float(parser,
709 (!ConstV(0).x && !ConstV(0).y && !ConstV(0).z));
711 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
714 if (CanConstFold1(exprs[0])) {
715 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
716 out = (ast_expression*)parser_const_float(parser, !ConstS(0));
718 out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
720 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
721 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
723 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
726 /* we don't constant-fold NOT for these types */
728 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
731 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
734 parseerror(parser, "invalid types used in expression: cannot logically negate type %s",
735 type_name[exprs[0]->expression.vtype]);
741 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
742 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
744 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
745 type_name[exprs[0]->expression.vtype],
746 type_name[exprs[1]->expression.vtype]);
749 switch (exprs[0]->expression.vtype) {
751 if (CanConstFold(exprs[0], exprs[1]))
753 out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
756 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
759 if (CanConstFold(exprs[0], exprs[1]))
760 out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
762 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
765 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
766 type_name[exprs[0]->expression.vtype],
767 type_name[exprs[1]->expression.vtype]);
772 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
773 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
775 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
776 type_name[exprs[1]->expression.vtype],
777 type_name[exprs[0]->expression.vtype]);
780 switch (exprs[0]->expression.vtype) {
782 if (CanConstFold(exprs[0], exprs[1]))
783 out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
785 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
788 if (CanConstFold(exprs[0], exprs[1]))
789 out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
791 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
794 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
795 type_name[exprs[1]->expression.vtype],
796 type_name[exprs[0]->expression.vtype]);
801 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
802 !(exprs[0]->expression.vtype == TYPE_VECTOR &&
803 exprs[1]->expression.vtype == TYPE_FLOAT) &&
804 !(exprs[1]->expression.vtype == TYPE_VECTOR &&
805 exprs[0]->expression.vtype == TYPE_FLOAT)
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]);
813 switch (exprs[0]->expression.vtype) {
815 if (exprs[1]->expression.vtype == TYPE_VECTOR)
817 if (CanConstFold(exprs[0], exprs[1]))
818 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
820 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
824 if (CanConstFold(exprs[0], exprs[1]))
825 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
827 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
831 if (exprs[1]->expression.vtype == TYPE_FLOAT)
833 if (CanConstFold(exprs[0], exprs[1]))
834 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
836 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
840 if (CanConstFold(exprs[0], exprs[1]))
841 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
842 else if (OPTS_OPTIMIZATION(OPTIM_VECTOR_COMPONENTS) && CanConstFold1(exprs[0])) {
843 vector vec = ConstV(0);
844 if (!vec.y && !vec.z) { /* 'n 0 0' * v */
845 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
846 out = (ast_expression*)ast_member_new(ctx, exprs[1], 0, NULL);
847 out->expression.node.keep = false;
848 ((ast_member*)out)->rvalue = true;
850 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.x), out);
852 else if (!vec.x && !vec.z) { /* '0 n 0' * v */
853 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
854 out = (ast_expression*)ast_member_new(ctx, exprs[1], 1, NULL);
855 out->expression.node.keep = false;
856 ((ast_member*)out)->rvalue = true;
858 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.y), out);
860 else if (!vec.x && !vec.y) { /* '0 n 0' * v */
861 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
862 out = (ast_expression*)ast_member_new(ctx, exprs[1], 2, NULL);
863 out->expression.node.keep = false;
864 ((ast_member*)out)->rvalue = true;
866 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.z), out);
869 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
871 else if (OPTS_OPTIMIZATION(OPTIM_VECTOR_COMPONENTS) && CanConstFold1(exprs[1])) {
872 vector vec = ConstV(1);
873 if (!vec.y && !vec.z) { /* v * 'n 0 0' */
874 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
875 out = (ast_expression*)ast_member_new(ctx, exprs[0], 0, NULL);
876 out->expression.node.keep = false;
877 ((ast_member*)out)->rvalue = true;
879 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.x));
881 else if (!vec.x && !vec.z) { /* v * '0 n 0' */
882 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
883 out = (ast_expression*)ast_member_new(ctx, exprs[0], 1, NULL);
884 out->expression.node.keep = false;
885 ((ast_member*)out)->rvalue = true;
887 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.y));
889 else if (!vec.x && !vec.y) { /* v * '0 n 0' */
890 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
891 out = (ast_expression*)ast_member_new(ctx, exprs[0], 2, NULL);
892 out->expression.node.keep = false;
893 ((ast_member*)out)->rvalue = true;
895 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.z));
898 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
901 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
905 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
906 type_name[exprs[1]->expression.vtype],
907 type_name[exprs[0]->expression.vtype]);
912 if (NotSameType(TYPE_FLOAT)) {
913 parseerror(parser, "invalid types used in expression: cannot divide types %s and %s",
914 type_name[exprs[0]->expression.vtype],
915 type_name[exprs[1]->expression.vtype]);
918 if (CanConstFold(exprs[0], exprs[1]))
919 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
921 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
925 parseerror(parser, "qc does not have a modulo operator");
929 if (NotSameType(TYPE_FLOAT)) {
930 parseerror(parser, "invalid types used in expression: cannot perform bit operations between types %s and %s",
931 type_name[exprs[0]->expression.vtype],
932 type_name[exprs[1]->expression.vtype]);
935 if (CanConstFold(exprs[0], exprs[1]))
936 out = (ast_expression*)parser_const_float(parser,
937 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
938 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
940 out = (ast_expression*)ast_binary_new(ctx,
941 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
945 compile_error(ast_ctx(exprs[0]), "Not Yet Implemented: bit-xor via ^");
950 if (CanConstFold(exprs[0], exprs[1]) && ! NotSameType(TYPE_FLOAT)) {
951 if (op->id == opid2('<','<'))
952 out = (ast_expression*)parser_const_float(parser, (double)((int)(ConstF(0)) << (int)(ConstF(1))));
954 out = (ast_expression*)parser_const_float(parser, (double)((int)(ConstF(0)) >> (int)(ConstF(1))));
957 case opid3('<','<','='):
958 case opid3('>','>','='):
959 compile_error(ast_ctx(exprs[0]), "Not Yet Implemented: bit-shifts");
963 generated_op += 1; /* INSTR_OR */
965 generated_op += INSTR_AND;
967 if (NotSameType(TYPE_FLOAT)) {
968 parseerror(parser, "invalid types used in expression: cannot perform logical operations between types %s and %s",
969 type_name[exprs[0]->expression.vtype],
970 type_name[exprs[1]->expression.vtype]);
971 parseerror(parser, "TODO: logical ops for arbitrary types using INSTR_NOT");
972 parseerror(parser, "TODO: optional early out");
976 if (CanConstFold(exprs[0], exprs[1]))
978 if (OPTS_FLAG(PERL_LOGIC)) {
979 if (immediate_is_true(ctx, asvalue[0]))
983 out = (ast_expression*)parser_const_float(parser,
984 ( (generated_op == INSTR_OR)
985 ? (immediate_is_true(ctx, asvalue[0]) || immediate_is_true(ctx, asvalue[1]))
986 : (immediate_is_true(ctx, asvalue[0]) && immediate_is_true(ctx, asvalue[1])) )
991 if (OPTS_FLAG(PERL_LOGIC) && !ast_compare_type(exprs[0], exprs[1])) {
992 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
993 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
994 parseerror(parser, "invalid types for logical operation with -fperl-logic: %s and %s", ty1, ty2);
997 for (i = 0; i < 2; ++i) {
998 if (OPTS_FLAG(CORRECT_LOGIC) && exprs[i]->expression.vtype == TYPE_VECTOR) {
999 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[i]);
1001 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
1003 exprs[i] = out; out = NULL;
1004 if (OPTS_FLAG(PERL_LOGIC)) {
1005 /* here we want to keep the right expressions' type */
1009 else if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && exprs[i]->expression.vtype == TYPE_STRING) {
1010 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[i]);
1012 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
1014 exprs[i] = out; out = NULL;
1015 if (OPTS_FLAG(PERL_LOGIC)) {
1016 /* here we want to keep the right expressions' type */
1021 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
1025 case opid2('?',':'):
1026 if (vec_last(parser->pot) != POT_TERNARY2) {
1027 parseerror(parser, "mismatched parenthesis/ternary");
1030 vec_pop(parser->pot);
1031 if (!ast_compare_type(exprs[1], exprs[2])) {
1032 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
1033 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
1034 parseerror(parser, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
1037 if (CanConstFold1(exprs[0]))
1038 out = (immediate_is_true(ctx, asvalue[0]) ? exprs[1] : exprs[2]);
1040 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
1044 generated_op += 1; /* INSTR_GT */
1046 generated_op += 1; /* INSTR_LT */
1047 case opid2('>', '='):
1048 generated_op += 1; /* INSTR_GE */
1049 case opid2('<', '='):
1050 generated_op += INSTR_LE;
1051 if (NotSameType(TYPE_FLOAT)) {
1052 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
1053 type_name[exprs[0]->expression.vtype],
1054 type_name[exprs[1]->expression.vtype]);
1057 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
1059 case opid2('!', '='):
1060 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
1061 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
1062 type_name[exprs[0]->expression.vtype],
1063 type_name[exprs[1]->expression.vtype]);
1066 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
1068 case opid2('=', '='):
1069 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
1070 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
1071 type_name[exprs[0]->expression.vtype],
1072 type_name[exprs[1]->expression.vtype]);
1075 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
1079 if (ast_istype(exprs[0], ast_entfield)) {
1080 ast_expression *field = ((ast_entfield*)exprs[0])->field;
1081 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1082 exprs[0]->expression.vtype == TYPE_FIELD &&
1083 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
1085 assignop = type_storep_instr[TYPE_VECTOR];
1088 assignop = type_storep_instr[exprs[0]->expression.vtype];
1089 if (assignop == AINSTR_END || !ast_compare_type(field->expression.next, exprs[1]))
1091 ast_type_to_string(field->expression.next, ty1, sizeof(ty1));
1092 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1093 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1094 field->expression.next->expression.vtype == TYPE_FUNCTION &&
1095 exprs[1]->expression.vtype == TYPE_FUNCTION)
1097 (void)!parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
1098 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1101 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1106 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1107 exprs[0]->expression.vtype == TYPE_FIELD &&
1108 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
1110 assignop = type_store_instr[TYPE_VECTOR];
1113 assignop = type_store_instr[exprs[0]->expression.vtype];
1116 if (assignop == AINSTR_END) {
1117 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1118 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1119 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1121 else if (!ast_compare_type(exprs[0], exprs[1]))
1123 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1124 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1125 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1126 exprs[0]->expression.vtype == TYPE_FUNCTION &&
1127 exprs[1]->expression.vtype == TYPE_FUNCTION)
1129 (void)!parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
1130 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1133 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1136 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1137 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1139 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
1141 case opid3('+','+','P'):
1142 case opid3('-','-','P'):
1144 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1145 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1146 parseerror(parser, "invalid type for prefix increment: %s", ty1);
1149 if (op->id == opid3('+','+','P'))
1150 addop = INSTR_ADD_F;
1152 addop = INSTR_SUB_F;
1153 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1154 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1156 if (ast_istype(exprs[0], ast_entfield)) {
1157 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1159 (ast_expression*)parser_const_float_1(parser));
1161 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1163 (ast_expression*)parser_const_float_1(parser));
1166 case opid3('S','+','+'):
1167 case opid3('S','-','-'):
1169 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1170 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1171 parseerror(parser, "invalid type for suffix increment: %s", ty1);
1174 if (op->id == opid3('S','+','+')) {
1175 addop = INSTR_ADD_F;
1176 subop = INSTR_SUB_F;
1178 addop = INSTR_SUB_F;
1179 subop = INSTR_ADD_F;
1181 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1182 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1184 if (ast_istype(exprs[0], ast_entfield)) {
1185 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1187 (ast_expression*)parser_const_float_1(parser));
1189 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1191 (ast_expression*)parser_const_float_1(parser));
1195 out = (ast_expression*)ast_binary_new(ctx, subop,
1197 (ast_expression*)parser_const_float_1(parser));
1199 case opid2('+','='):
1200 case opid2('-','='):
1201 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
1202 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
1204 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1205 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1206 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1210 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1211 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1213 if (ast_istype(exprs[0], ast_entfield))
1214 assignop = type_storep_instr[exprs[0]->expression.vtype];
1216 assignop = type_store_instr[exprs[0]->expression.vtype];
1217 switch (exprs[0]->expression.vtype) {
1219 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1220 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
1221 exprs[0], exprs[1]);
1224 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1225 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1226 exprs[0], exprs[1]);
1229 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1230 type_name[exprs[0]->expression.vtype],
1231 type_name[exprs[1]->expression.vtype]);
1235 case opid2('*','='):
1236 case opid2('/','='):
1237 if (exprs[1]->expression.vtype != TYPE_FLOAT ||
1238 !(exprs[0]->expression.vtype == TYPE_FLOAT ||
1239 exprs[0]->expression.vtype == TYPE_VECTOR))
1241 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1242 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1243 parseerror(parser, "invalid types used in expression: %s and %s",
1247 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1248 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1250 if (ast_istype(exprs[0], ast_entfield))
1251 assignop = type_storep_instr[exprs[0]->expression.vtype];
1253 assignop = type_store_instr[exprs[0]->expression.vtype];
1254 switch (exprs[0]->expression.vtype) {
1256 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1257 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1258 exprs[0], exprs[1]);
1261 if (op->id == opid2('*','=')) {
1262 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1263 exprs[0], exprs[1]);
1265 /* there's no DIV_VF */
1266 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
1267 (ast_expression*)parser_const_float_1(parser),
1271 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1276 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1277 type_name[exprs[0]->expression.vtype],
1278 type_name[exprs[1]->expression.vtype]);
1282 case opid2('&','='):
1283 case opid2('|','='):
1284 if (NotSameType(TYPE_FLOAT)) {
1285 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1286 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1287 parseerror(parser, "invalid types used in expression: %s and %s",
1291 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1292 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1294 if (ast_istype(exprs[0], ast_entfield))
1295 assignop = type_storep_instr[exprs[0]->expression.vtype];
1297 assignop = type_store_instr[exprs[0]->expression.vtype];
1298 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1299 (op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1300 exprs[0], exprs[1]);
1302 case opid3('&','~','='):
1303 /* This is like: a &= ~(b);
1304 * But QC has no bitwise-not, so we implement it as
1307 if (NotSameType(TYPE_FLOAT)) {
1308 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1309 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1310 parseerror(parser, "invalid types used in expression: %s and %s",
1314 if (ast_istype(exprs[0], ast_entfield))
1315 assignop = type_storep_instr[exprs[0]->expression.vtype];
1317 assignop = type_store_instr[exprs[0]->expression.vtype];
1318 out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1321 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1322 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1324 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1325 asbinstore->keep_dest = true;
1326 out = (ast_expression*)asbinstore;
1332 parseerror(parser, "failed to apply operand %s", op->op);
1336 DEBUGSHUNTDO(con_out("applied %s\n", op->op));
1337 vec_push(sy->out, syexp(ctx, out));
1341 static bool parser_close_call(parser_t *parser, shunt *sy)
1343 /* was a function call */
1344 ast_expression *fun;
1350 vec_shrinkby(sy->ops, 1);
1351 fid = sy->ops[vec_size(sy->ops)].off;
1353 /* out[fid] is the function
1354 * everything above is parameters...
1355 * 0 params = nothing
1356 * 1 params = ast_expression
1360 if (vec_size(sy->out) < 1 || vec_size(sy->out) <= fid) {
1361 parseerror(parser, "internal error: function call needs function and parameter list...");
1365 fun = sy->out[fid].out;
1367 if (fun == intrinsic_debug_typestring) {
1369 if (fid+2 != vec_size(sy->out) ||
1370 vec_last(sy->out).block)
1372 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1375 ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
1376 ast_unref(vec_last(sy->out).out);
1377 sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
1378 (ast_expression*)parser_const_string(parser, ty, false));
1379 vec_shrinkby(sy->out, 1);
1383 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1385 parseerror(parser, "internal error: failed to create ast_call node");
1389 if (fid+1 == vec_size(sy->out)) {
1392 } else if (fid+2 == vec_size(sy->out)) {
1394 vec_shrinkby(sy->out, 1);
1395 params = sy->out[vec_size(sy->out)].block;
1399 vec_push(call->params, sy->out[vec_size(sy->out)].out);
1401 paramcount = vec_size(params->exprs);
1402 call->params = params->exprs;
1403 params->exprs = NULL;
1406 (void)!ast_call_check_types(call);
1408 parseerror(parser, "invalid function call");
1412 /* overwrite fid, the function, with a call */
1413 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1415 if (fun->expression.vtype != TYPE_FUNCTION) {
1416 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
1420 if (!fun->expression.next) {
1421 parseerror(parser, "could not determine function return type");
1424 ast_value *fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1426 if (fun->expression.flags & AST_FLAG_DEPRECATED) {
1428 return !parsewarning(parser, WARN_DEPRECATED,
1429 "call to function (which is marked deprecated)\n",
1430 "-> it has been declared here: %s:%i",
1431 ast_ctx(fun).file, ast_ctx(fun).line);
1434 return !parsewarning(parser, WARN_DEPRECATED,
1435 "call to `%s` (which is marked deprecated)\n"
1436 "-> `%s` declared here: %s:%i",
1437 fval->name, fval->name, ast_ctx(fun).file, ast_ctx(fun).line);
1439 return !parsewarning(parser, WARN_DEPRECATED,
1440 "call to `%s` (deprecated: %s)\n"
1441 "-> `%s` declared here: %s:%i",
1442 fval->name, fval->desc, fval->name, ast_ctx(fun).file,
1446 if (vec_size(fun->expression.params) != paramcount &&
1447 !((fun->expression.flags & AST_FLAG_VARIADIC) &&
1448 vec_size(fun->expression.params) < paramcount))
1450 const char *fewmany = (vec_size(fun->expression.params) > paramcount) ? "few" : "many";
1452 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1453 "too %s parameters for call to %s: expected %i, got %i\n"
1454 " -> `%s` has been declared here: %s:%i",
1455 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1456 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1458 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1459 "too %s parameters for function call: expected %i, got %i\n"
1460 " -> it has been declared here: %s:%i",
1461 fewmany, (int)vec_size(fun->expression.params), (int)paramcount,
1462 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1469 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
1471 if (!vec_size(sy->ops)) {
1472 parseerror(parser, "unmatched closing paren");
1475 /* this would for bit a + (x) because there are no operators inside (x)
1476 if (sy->ops[vec_size(sy->ops)-1].paren == 1) {
1477 parseerror(parser, "empty parenthesis expression");
1481 while (vec_size(sy->ops)) {
1482 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_FUNC) {
1483 if (!parser_close_call(parser, sy))
1487 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_EXPR) {
1488 vec_shrinkby(sy->ops, 1);
1489 return !functions_only;
1491 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_INDEX) {
1494 /* pop off the parenthesis */
1495 vec_shrinkby(sy->ops, 1);
1496 /* then apply the index operator */
1497 if (!parser_sy_apply_operator(parser, sy))
1501 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_TERNARY) {
1504 if (vec_last(parser->pot) != POT_TERNARY1) {
1505 parseerror(parser, "mismatched colon in ternary expression (missing closing paren?)");
1508 vec_last(parser->pot) = POT_TERNARY2;
1509 /* pop off the parenthesis */
1510 vec_shrinkby(sy->ops, 1);
1513 if (!parser_sy_apply_operator(parser, sy))
1519 static void parser_reclassify_token(parser_t *parser)
1522 for (i = 0; i < operator_count; ++i) {
1523 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1524 parser->tok = TOKEN_OPERATOR;
1530 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels)
1532 ast_expression *expr = NULL;
1534 bool wantop = false;
1535 /* only warn once about an assignment in a truth value because the current code
1536 * would trigger twice on: if(a = b && ...), once for the if-truth-value, once for the && part
1538 bool warn_truthvalue = true;
1540 /* count the parens because an if starts with one, so the
1541 * end of a condition is an unmatched closing paren
1549 parser->lex->flags.noops = false;
1551 parser_reclassify_token(parser);
1555 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1556 parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "_"))
1558 /* a translatable string */
1562 parseerror(parser, "expected operator or end of statement, got constant");
1566 parser->lex->flags.noops = true;
1567 if (!parser_next(parser) || parser->tok != '(') {
1568 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1571 parser->lex->flags.noops = false;
1572 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1573 parseerror(parser, "expected a constant string in translatable-string extension");
1576 val = parser_const_string(parser, parser_tokval(parser), true);
1580 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1581 DEBUGSHUNTDO(con_out("push string\n"));
1583 if (!parser_next(parser) || parser->tok != ')') {
1584 parseerror(parser, "expected closing paren after translatable string");
1588 else if (parser->tok == TOKEN_IDENT)
1590 const char *ctoken = parser_tokval(parser);
1591 ast_expression *prev = vec_size(sy.out) ? vec_last(sy.out).out : NULL;
1592 ast_expression *var;
1594 parseerror(parser, "expected operator or end of statement");
1598 /* a_vector.{x,y,z} */
1599 if (!vec_size(sy.ops) ||
1600 !vec_last(sy.ops).etype ||
1601 operators[vec_last(sy.ops).etype-1].id != opid1('.') ||
1602 (prev >= intrinsic_debug_typestring &&
1603 prev <= intrinsic_debug_typestring))
1605 /* When adding more intrinsics, fix the above condition */
1608 if (prev && prev->expression.vtype == TYPE_VECTOR && ctoken[0] >= 'x' && ctoken[0] <= 'z' && !ctoken[1])
1610 var = (ast_expression*)parser->const_vec[ctoken[0]-'x'];
1612 var = parser_find_var(parser, parser_tokval(parser));
1614 var = parser_find_field(parser, parser_tokval(parser));
1616 if (!var && with_labels) {
1617 var = (ast_expression*)parser_find_label(parser, parser_tokval(parser));
1619 ast_label *lbl = ast_label_new(parser_ctx(parser), parser_tokval(parser), true);
1620 var = (ast_expression*)lbl;
1621 vec_push(parser->labels, lbl);
1626 if (!strcmp(parser_tokval(parser), "__builtin_debug_typestring")) {
1627 var = (ast_expression*)intrinsic_debug_typestring;
1632 char *correct = NULL;
1635 * sometimes people use preprocessing predefs without enabling them
1636 * i've done this thousands of times already myself. Lets check for
1637 * it in the predef table. And diagnose it better :)
1639 if (!OPTS_FLAG(FTEPP_PREDEFS)) {
1640 for (i = 0; i < sizeof(ftepp_predefs)/sizeof(*ftepp_predefs); i++) {
1641 if (!strcmp(ftepp_predefs[i].name, parser_tokval(parser))) {
1642 parseerror(parser, "unexpected ident: %s (use -fftepp-predef to enable pre-defined macros)", parser_tokval(parser));
1649 * TODO: determine the best score for the identifier: be it
1650 * a variable, a field.
1652 * We should also consider adding correction tables for
1653 * other things as well.
1655 if (OPTS_FLAG(ENHANCED_DIAGNOSTICS)) {
1657 correct_init(&corr);
1659 for (i = 0; i < vec_size(parser->correct_variables); i++) {
1660 correct = correct_str(&corr, parser->correct_variables[i], parser_tokval(parser));
1661 if (strcmp(correct, parser_tokval(parser))) {
1663 } else if (correct) {
1668 correct_free(&corr);
1671 parseerror(parser, "unexpected ident: %s (did you mean %s?)", parser_tokval(parser), correct);
1676 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1682 if (ast_istype(var, ast_value)) {
1683 ((ast_value*)var)->uses++;
1685 else if (ast_istype(var, ast_member)) {
1686 ast_member *mem = (ast_member*)var;
1687 if (ast_istype(mem->owner, ast_value))
1688 ((ast_value*)(mem->owner))->uses++;
1691 vec_push(sy.out, syexp(parser_ctx(parser), var));
1692 DEBUGSHUNTDO(con_out("push %s\n", parser_tokval(parser)));
1694 else if (parser->tok == TOKEN_FLOATCONST) {
1697 parseerror(parser, "expected operator or end of statement, got constant");
1701 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1704 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1705 DEBUGSHUNTDO(con_out("push %g\n", parser_token(parser)->constval.f));
1707 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1710 parseerror(parser, "expected operator or end of statement, got constant");
1714 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1717 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1718 DEBUGSHUNTDO(con_out("push %i\n", parser_token(parser)->constval.i));
1720 else if (parser->tok == TOKEN_STRINGCONST) {
1723 parseerror(parser, "expected operator or end of statement, got constant");
1727 val = parser_const_string(parser, parser_tokval(parser), false);
1730 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1731 DEBUGSHUNTDO(con_out("push string\n"));
1733 else if (parser->tok == TOKEN_VECTORCONST) {
1736 parseerror(parser, "expected operator or end of statement, got constant");
1740 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1743 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1744 DEBUGSHUNTDO(con_out("push '%g %g %g'\n",
1745 parser_token(parser)->constval.v.x,
1746 parser_token(parser)->constval.v.y,
1747 parser_token(parser)->constval.v.z));
1749 else if (parser->tok == '(') {
1750 parseerror(parser, "internal error: '(' should be classified as operator");
1753 else if (parser->tok == '[') {
1754 parseerror(parser, "internal error: '[' should be classified as operator");
1757 else if (parser->tok == ')') {
1759 DEBUGSHUNTDO(con_out("do[op] )\n"));
1763 /* we do expect an operator next */
1764 /* closing an opening paren */
1765 if (!parser_close_paren(parser, &sy, false))
1767 if (vec_last(parser->pot) != POT_PAREN) {
1768 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1771 vec_pop(parser->pot);
1773 DEBUGSHUNTDO(con_out("do[nop] )\n"));
1777 /* allowed for function calls */
1778 if (!parser_close_paren(parser, &sy, true))
1780 if (vec_last(parser->pot) != POT_PAREN) {
1781 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1784 vec_pop(parser->pot);
1788 else if (parser->tok == ']') {
1790 parseerror(parser, "operand expected");
1794 if (!parser_close_paren(parser, &sy, false))
1796 if (vec_last(parser->pot) != POT_PAREN) {
1797 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1800 vec_pop(parser->pot);
1803 else if (parser->tok == TOKEN_TYPENAME) {
1804 parseerror(parser, "unexpected typename");
1807 else if (parser->tok != TOKEN_OPERATOR) {
1809 parseerror(parser, "expected operator or end of statement");
1816 /* classify the operator */
1817 const oper_info *op;
1818 const oper_info *olast = NULL;
1820 for (o = 0; o < operator_count; ++o) {
1821 if (((!(operators[o].flags & OP_PREFIX) == !!wantop)) &&
1822 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1823 !strcmp(parser_tokval(parser), operators[o].op))
1828 if (o == operator_count) {
1829 /* no operator found... must be the end of the statement */
1832 /* found an operator */
1835 /* when declaring variables, a comma starts a new variable */
1836 if (op->id == opid1(',') && !parens && stopatcomma) {
1837 /* fixup the token */
1842 /* a colon without a pervious question mark cannot be a ternary */
1843 if (!ternaries && op->id == opid2(':','?')) {
1848 if (op->id == opid1(',')) {
1849 if (vec_size(parser->pot) && vec_last(parser->pot) == POT_TERNARY2) {
1850 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
1854 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1855 olast = &operators[vec_last(sy.ops).etype-1];
1857 #define IsAssignOp(x) (\
1858 (x) == opid1('=') || \
1859 (x) == opid2('+','=') || \
1860 (x) == opid2('-','=') || \
1861 (x) == opid2('*','=') || \
1862 (x) == opid2('/','=') || \
1863 (x) == opid2('%','=') || \
1864 (x) == opid2('&','=') || \
1865 (x) == opid2('|','=') || \
1866 (x) == opid3('&','~','=') \
1868 if (warn_truthvalue) {
1869 if ( (olast && IsAssignOp(olast->id) && (op->id == opid2('&','&') || op->id == opid2('|','|'))) ||
1870 (olast && IsAssignOp(op->id) && (olast->id == opid2('&','&') || olast->id == opid2('|','|'))) ||
1871 (truthvalue && !vec_size(parser->pot) && IsAssignOp(op->id))
1874 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around assignment used as truth value");
1875 warn_truthvalue = false;
1880 (op->prec < olast->prec) ||
1881 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1883 if (!parser_sy_apply_operator(parser, &sy))
1885 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1886 olast = &operators[vec_last(sy.ops).etype-1];
1891 if (op->id == opid1('(')) {
1893 size_t sycount = vec_size(sy.out);
1894 DEBUGSHUNTDO(con_out("push [op] (\n"));
1895 ++parens; vec_push(parser->pot, POT_PAREN);
1896 /* we expected an operator, this is the function-call operator */
1897 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_FUNC, sycount-1));
1899 ++parens; vec_push(parser->pot, POT_PAREN);
1900 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_EXPR, 0));
1901 DEBUGSHUNTDO(con_out("push [nop] (\n"));
1904 } else if (op->id == opid1('[')) {
1906 parseerror(parser, "unexpected array subscript");
1909 ++parens; vec_push(parser->pot, POT_PAREN);
1910 /* push both the operator and the paren, this makes life easier */
1911 vec_push(sy.ops, syop(parser_ctx(parser), op));
1912 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_INDEX, 0));
1914 } else if (op->id == opid2('?',':')) {
1915 vec_push(sy.ops, syop(parser_ctx(parser), op));
1916 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_TERNARY, 0));
1919 vec_push(parser->pot, POT_TERNARY1);
1920 } else if (op->id == opid2(':','?')) {
1921 if (!vec_size(parser->pot)) {
1922 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1925 if (vec_last(parser->pot) != POT_TERNARY1) {
1926 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1929 if (!parser_close_paren(parser, &sy, false))
1931 vec_push(sy.ops, syop(parser_ctx(parser), op));
1935 DEBUGSHUNTDO(con_out("push operator %s\n", op->op));
1936 vec_push(sy.ops, syop(parser_ctx(parser), op));
1937 wantop = !!(op->flags & OP_SUFFIX);
1940 if (!parser_next(parser)) {
1943 if (parser->tok == ';' ||
1944 (!parens && (parser->tok == ']' || parser->tok == ')' || parser->tok == '}')))
1950 while (vec_size(sy.ops)) {
1951 if (!parser_sy_apply_operator(parser, &sy))
1955 parser->lex->flags.noops = true;
1956 if (!vec_size(sy.out)) {
1957 parseerror(parser, "empty expression");
1960 expr = sy.out[0].out;
1963 DEBUGSHUNTDO(con_out("shunt done\n"));
1964 if (vec_size(parser->pot)) {
1965 parseerror(parser, "internal error: vec_size(parser->pot) = %lu", (unsigned long)vec_size(parser->pot));
1968 vec_free(parser->pot);
1972 parser->lex->flags.noops = true;
1978 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels)
1980 ast_expression *e = parse_expression_leave(parser, stopatcomma, false, with_labels);
1983 if (parser->tok != ';') {
1984 parseerror(parser, "semicolon expected after expression");
1988 if (!parser_next(parser)) {
1995 static void parser_enterblock(parser_t *parser)
1997 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
1998 vec_push(parser->_blocklocals, vec_size(parser->_locals));
1999 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
2000 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
2001 vec_push(parser->_block_ctx, parser_ctx(parser));
2004 vec_push(parser->correct_variables, correct_trie_new());
2005 vec_push(parser->correct_variables_score, NULL);
2008 static bool parser_leaveblock(parser_t *parser)
2011 size_t locals, typedefs;
2013 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
2014 parseerror(parser, "internal error: parser_leaveblock with no block");
2018 util_htdel(vec_last(parser->variables));
2019 correct_del(vec_last(parser->correct_variables), vec_last(parser->correct_variables_score));
2021 vec_pop(parser->variables);
2022 vec_pop(parser->correct_variables);
2023 vec_pop(parser->correct_variables_score);
2024 if (!vec_size(parser->_blocklocals)) {
2025 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
2029 locals = vec_last(parser->_blocklocals);
2030 vec_pop(parser->_blocklocals);
2031 while (vec_size(parser->_locals) != locals) {
2032 ast_expression *e = vec_last(parser->_locals);
2033 ast_value *v = (ast_value*)e;
2034 vec_pop(parser->_locals);
2035 if (ast_istype(e, ast_value) && !v->uses) {
2036 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name))
2041 typedefs = vec_last(parser->_blocktypedefs);
2042 while (vec_size(parser->_typedefs) != typedefs) {
2043 ast_delete(vec_last(parser->_typedefs));
2044 vec_pop(parser->_typedefs);
2046 util_htdel(vec_last(parser->typedefs));
2047 vec_pop(parser->typedefs);
2049 vec_pop(parser->_block_ctx);
2054 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
2056 vec_push(parser->_locals, e);
2057 util_htset(vec_last(parser->variables), name, (void*)e);
2061 vec_last(parser->correct_variables),
2062 &vec_last(parser->correct_variables_score),
2067 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e)
2069 vec_push(parser->globals, e);
2070 util_htset(parser->htglobals, name, e);
2074 parser->correct_variables[0],
2075 &parser->correct_variables_score[0],
2080 static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
2084 ast_expression *prev;
2086 if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->expression.vtype == TYPE_STRING)
2089 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
2092 parseerror(parser, "internal error: failed to process condition");
2097 else if (OPTS_FLAG(CORRECT_LOGIC) && cond->expression.vtype == TYPE_VECTOR)
2099 /* vector types need to be cast to true booleans */
2100 ast_binary *bin = (ast_binary*)cond;
2101 if (!OPTS_FLAG(PERL_LOGIC) || !ast_istype(cond, ast_binary) || !(bin->op == INSTR_AND || bin->op == INSTR_OR))
2103 /* in perl-logic, AND and OR take care of the -fcorrect-logic */
2105 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_V, cond);
2108 parseerror(parser, "internal error: failed to process condition");
2115 unary = (ast_unary*)cond;
2116 while (ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F)
2118 cond = unary->operand;
2119 unary->operand = NULL;
2122 unary = (ast_unary*)cond;
2126 parseerror(parser, "internal error: failed to process condition");
2128 if (ifnot) *_ifnot = !*_ifnot;
2132 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
2135 ast_expression *cond, *ontrue = NULL, *onfalse = NULL;
2138 lex_ctx ctx = parser_ctx(parser);
2140 (void)block; /* not touching */
2142 /* skip the 'if', parse an optional 'not' and check for an opening paren */
2143 if (!parser_next(parser)) {
2144 parseerror(parser, "expected condition or 'not'");
2147 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
2149 if (!parser_next(parser)) {
2150 parseerror(parser, "expected condition in parenthesis");
2154 if (parser->tok != '(') {
2155 parseerror(parser, "expected 'if' condition in parenthesis");
2158 /* parse into the expression */
2159 if (!parser_next(parser)) {
2160 parseerror(parser, "expected 'if' condition after opening paren");
2163 /* parse the condition */
2164 cond = parse_expression_leave(parser, false, true, false);
2168 if (parser->tok != ')') {
2169 parseerror(parser, "expected closing paren after 'if' condition");
2173 /* parse into the 'then' branch */
2174 if (!parser_next(parser)) {
2175 parseerror(parser, "expected statement for on-true branch of 'if'");
2179 if (!parse_statement_or_block(parser, &ontrue)) {
2184 ontrue = (ast_expression*)ast_block_new(parser_ctx(parser));
2185 /* check for an else */
2186 if (!strcmp(parser_tokval(parser), "else")) {
2187 /* parse into the 'else' branch */
2188 if (!parser_next(parser)) {
2189 parseerror(parser, "expected on-false branch after 'else'");
2194 if (!parse_statement_or_block(parser, &onfalse)) {
2201 cond = process_condition(parser, cond, &ifnot);
2203 if (ontrue) ast_delete(ontrue);
2204 if (onfalse) ast_delete(onfalse);
2209 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
2211 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
2212 *out = (ast_expression*)ifthen;
2216 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out);
2217 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
2222 /* skip the 'while' and get the body */
2223 if (!parser_next(parser)) {
2224 if (OPTS_FLAG(LOOP_LABELS))
2225 parseerror(parser, "expected loop label or 'while' condition in parenthesis");
2227 parseerror(parser, "expected 'while' condition in parenthesis");
2231 if (parser->tok == ':') {
2232 if (!OPTS_FLAG(LOOP_LABELS))
2233 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2234 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2235 parseerror(parser, "expected loop label");
2238 label = util_strdup(parser_tokval(parser));
2239 if (!parser_next(parser)) {
2241 parseerror(parser, "expected 'while' condition in parenthesis");
2246 if (parser->tok != '(') {
2247 parseerror(parser, "expected 'while' condition in parenthesis");
2251 vec_push(parser->breaks, label);
2252 vec_push(parser->continues, label);
2254 rv = parse_while_go(parser, block, out);
2257 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2258 parseerror(parser, "internal error: label stack corrupted");
2264 vec_pop(parser->breaks);
2265 vec_pop(parser->continues);
2270 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out)
2273 ast_expression *cond, *ontrue;
2277 lex_ctx ctx = parser_ctx(parser);
2279 (void)block; /* not touching */
2281 /* parse into the expression */
2282 if (!parser_next(parser)) {
2283 parseerror(parser, "expected 'while' condition after opening paren");
2286 /* parse the condition */
2287 cond = parse_expression_leave(parser, false, true, false);
2291 if (parser->tok != ')') {
2292 parseerror(parser, "expected closing paren after 'while' condition");
2296 /* parse into the 'then' branch */
2297 if (!parser_next(parser)) {
2298 parseerror(parser, "expected while-loop body");
2302 if (!parse_statement_or_block(parser, &ontrue)) {
2307 cond = process_condition(parser, cond, &ifnot);
2312 aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue);
2313 *out = (ast_expression*)aloop;
2317 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out);
2318 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2323 /* skip the 'do' and get the body */
2324 if (!parser_next(parser)) {
2325 if (OPTS_FLAG(LOOP_LABELS))
2326 parseerror(parser, "expected loop label or body");
2328 parseerror(parser, "expected loop body");
2332 if (parser->tok == ':') {
2333 if (!OPTS_FLAG(LOOP_LABELS))
2334 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2335 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2336 parseerror(parser, "expected loop label");
2339 label = util_strdup(parser_tokval(parser));
2340 if (!parser_next(parser)) {
2342 parseerror(parser, "expected loop body");
2347 vec_push(parser->breaks, label);
2348 vec_push(parser->continues, label);
2350 rv = parse_dowhile_go(parser, block, out);
2353 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2354 parseerror(parser, "internal error: label stack corrupted");
2360 vec_pop(parser->breaks);
2361 vec_pop(parser->continues);
2366 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out)
2369 ast_expression *cond, *ontrue;
2373 lex_ctx ctx = parser_ctx(parser);
2375 (void)block; /* not touching */
2377 if (!parse_statement_or_block(parser, &ontrue))
2380 /* expect the "while" */
2381 if (parser->tok != TOKEN_KEYWORD ||
2382 strcmp(parser_tokval(parser), "while"))
2384 parseerror(parser, "expected 'while' and condition");
2389 /* skip the 'while' and check for opening paren */
2390 if (!parser_next(parser) || parser->tok != '(') {
2391 parseerror(parser, "expected 'while' condition in parenthesis");
2395 /* parse into the expression */
2396 if (!parser_next(parser)) {
2397 parseerror(parser, "expected 'while' condition after opening paren");
2401 /* parse the condition */
2402 cond = parse_expression_leave(parser, false, true, false);
2406 if (parser->tok != ')') {
2407 parseerror(parser, "expected closing paren after 'while' condition");
2413 if (!parser_next(parser) || parser->tok != ';') {
2414 parseerror(parser, "expected semicolon after condition");
2420 if (!parser_next(parser)) {
2421 parseerror(parser, "parse error");
2427 cond = process_condition(parser, cond, &ifnot);
2432 aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue);
2433 *out = (ast_expression*)aloop;
2437 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out);
2438 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2443 /* skip the 'for' and check for opening paren */
2444 if (!parser_next(parser)) {
2445 if (OPTS_FLAG(LOOP_LABELS))
2446 parseerror(parser, "expected loop label or 'for' expressions in parenthesis");
2448 parseerror(parser, "expected 'for' expressions in parenthesis");
2452 if (parser->tok == ':') {
2453 if (!OPTS_FLAG(LOOP_LABELS))
2454 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2455 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2456 parseerror(parser, "expected loop label");
2459 label = util_strdup(parser_tokval(parser));
2460 if (!parser_next(parser)) {
2462 parseerror(parser, "expected 'for' expressions in parenthesis");
2467 if (parser->tok != '(') {
2468 parseerror(parser, "expected 'for' expressions in parenthesis");
2472 vec_push(parser->breaks, label);
2473 vec_push(parser->continues, label);
2475 rv = parse_for_go(parser, block, out);
2478 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2479 parseerror(parser, "internal error: label stack corrupted");
2485 vec_pop(parser->breaks);
2486 vec_pop(parser->continues);
2490 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out)
2493 ast_expression *initexpr, *cond, *increment, *ontrue;
2499 lex_ctx ctx = parser_ctx(parser);
2501 parser_enterblock(parser);
2508 /* parse into the expression */
2509 if (!parser_next(parser)) {
2510 parseerror(parser, "expected 'for' initializer after opening paren");
2515 if (parser->tok == TOKEN_IDENT)
2516 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2518 if (typevar || parser->tok == TOKEN_TYPENAME) {
2520 if (opts.standard != COMPILER_GMQCC) {
2521 if (parsewarning(parser, WARN_EXTENSIONS,
2522 "current standard does not allow variable declarations in for-loop initializers"))
2526 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false, 0, NULL))
2529 else if (parser->tok != ';')
2531 initexpr = parse_expression_leave(parser, false, false, false);
2536 /* move on to condition */
2537 if (parser->tok != ';') {
2538 parseerror(parser, "expected semicolon after for-loop initializer");
2541 if (!parser_next(parser)) {
2542 parseerror(parser, "expected for-loop condition");
2546 /* parse the condition */
2547 if (parser->tok != ';') {
2548 cond = parse_expression_leave(parser, false, true, false);
2553 /* move on to incrementor */
2554 if (parser->tok != ';') {
2555 parseerror(parser, "expected semicolon after for-loop initializer");
2558 if (!parser_next(parser)) {
2559 parseerror(parser, "expected for-loop condition");
2563 /* parse the incrementor */
2564 if (parser->tok != ')') {
2565 increment = parse_expression_leave(parser, false, false, false);
2568 if (!ast_side_effects(increment)) {
2569 if (genwarning(ast_ctx(increment), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2575 if (parser->tok != ')') {
2576 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2579 /* parse into the 'then' branch */
2580 if (!parser_next(parser)) {
2581 parseerror(parser, "expected for-loop body");
2584 if (!parse_statement_or_block(parser, &ontrue))
2588 cond = process_condition(parser, cond, &ifnot);
2592 aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue);
2593 *out = (ast_expression*)aloop;
2595 if (!parser_leaveblock(parser))
2599 if (initexpr) ast_delete(initexpr);
2600 if (cond) ast_delete(cond);
2601 if (increment) ast_delete(increment);
2602 (void)!parser_leaveblock(parser);
2606 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2608 ast_expression *exp = NULL;
2609 ast_return *ret = NULL;
2610 ast_value *expected = parser->function->vtype;
2612 lex_ctx ctx = parser_ctx(parser);
2614 (void)block; /* not touching */
2616 if (!parser_next(parser)) {
2617 parseerror(parser, "expected return expression");
2621 if (parser->tok != ';') {
2622 exp = parse_expression(parser, false, false);
2626 if (exp->expression.vtype != TYPE_NIL &&
2627 exp->expression.vtype != expected->expression.next->expression.vtype)
2629 parseerror(parser, "return with invalid expression");
2632 ret = ast_return_new(ctx, exp);
2638 if (!parser_next(parser))
2639 parseerror(parser, "parse error");
2640 if (expected->expression.next->expression.vtype != TYPE_VOID) {
2641 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2643 ret = ast_return_new(ctx, NULL);
2645 *out = (ast_expression*)ret;
2649 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2652 unsigned int levels = 0;
2653 lex_ctx ctx = parser_ctx(parser);
2654 const char **loops = (is_continue ? parser->continues : parser->breaks);
2656 (void)block; /* not touching */
2657 if (!parser_next(parser)) {
2658 parseerror(parser, "expected semicolon or loop label");
2662 if (!vec_size(loops)) {
2664 parseerror(parser, "`continue` can only be used inside loops");
2666 parseerror(parser, "`break` can only be used inside loops or switches");
2669 if (parser->tok == TOKEN_IDENT) {
2670 if (!OPTS_FLAG(LOOP_LABELS))
2671 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2672 i = vec_size(loops);
2674 if (loops[i] && !strcmp(loops[i], parser_tokval(parser)))
2677 parseerror(parser, "no such loop to %s: `%s`",
2678 (is_continue ? "continue" : "break out of"),
2679 parser_tokval(parser));
2684 if (!parser_next(parser)) {
2685 parseerror(parser, "expected semicolon");
2690 if (parser->tok != ';') {
2691 parseerror(parser, "expected semicolon");
2695 if (!parser_next(parser))
2696 parseerror(parser, "parse error");
2698 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue, levels);
2702 /* returns true when it was a variable qualifier, false otherwise!
2703 * on error, cvq is set to CV_WRONG
2705 static bool parse_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *is_static, uint32_t *_flags, char **message)
2707 bool had_const = false;
2708 bool had_var = false;
2709 bool had_noref = false;
2710 bool had_attrib = false;
2711 bool had_static = false;
2716 if (parser->tok == TOKEN_ATTRIBUTE_OPEN) {
2718 /* parse an attribute */
2719 if (!parser_next(parser)) {
2720 parseerror(parser, "expected attribute after `[[`");
2724 if (!strcmp(parser_tokval(parser), "noreturn")) {
2725 flags |= AST_FLAG_NORETURN;
2726 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2727 parseerror(parser, "`noreturn` attribute has no parameters, expected `]]`");
2732 else if (!strcmp(parser_tokval(parser), "noref")) {
2734 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2735 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2740 else if (!strcmp(parser_tokval(parser), "inline")) {
2741 flags |= AST_FLAG_INLINE;
2742 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2743 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2750 else if (!strcmp(parser_tokval(parser), "deprecated") && !(flags & AST_FLAG_DEPRECATED)) {
2751 flags |= AST_FLAG_DEPRECATED;
2754 if (!parser_next(parser)) {
2755 parseerror(parser, "parse error in attribute");
2759 if (parser->tok == '(') {
2760 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
2761 parseerror(parser, "`deprecated` attribute missing parameter");
2765 *message = util_strdup(parser_tokval(parser));
2767 if (!parser_next(parser)) {
2768 parseerror(parser, "parse error in attribute");
2772 if(parser->tok != ')') {
2773 parseerror(parser, "`deprecated` attribute expected `)` after parameter");
2777 if (!parser_next(parser)) {
2778 parseerror(parser, "parse error in attribute");
2783 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2784 parseerror(parser, "`deprecated` attribute expected `]]`");
2787 if (*message) mem_d(*message);
2795 /* Skip tokens until we hit a ]] */
2796 (void)!parsewarning(parser, WARN_UNKNOWN_ATTRIBUTE, "unknown attribute starting with `%s`", parser_tokval(parser));
2797 while (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2798 if (!parser_next(parser)) {
2799 parseerror(parser, "error inside attribute");
2806 else if (with_local && !strcmp(parser_tokval(parser), "static"))
2808 else if (!strcmp(parser_tokval(parser), "const"))
2810 else if (!strcmp(parser_tokval(parser), "var"))
2812 else if (with_local && !strcmp(parser_tokval(parser), "local"))
2814 else if (!strcmp(parser_tokval(parser), "noref"))
2816 else if (!had_const && !had_var && !had_noref && !had_attrib && !had_static && !flags) {
2821 if (!parser_next(parser))
2831 *is_static = had_static;
2835 parseerror(parser, "parse error after variable qualifier");
2840 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out);
2841 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
2846 /* skip the 'while' and get the body */
2847 if (!parser_next(parser)) {
2848 if (OPTS_FLAG(LOOP_LABELS))
2849 parseerror(parser, "expected loop label or 'switch' operand in parenthesis");
2851 parseerror(parser, "expected 'switch' operand in parenthesis");
2855 if (parser->tok == ':') {
2856 if (!OPTS_FLAG(LOOP_LABELS))
2857 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2858 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2859 parseerror(parser, "expected loop label");
2862 label = util_strdup(parser_tokval(parser));
2863 if (!parser_next(parser)) {
2865 parseerror(parser, "expected 'switch' operand in parenthesis");
2870 if (parser->tok != '(') {
2871 parseerror(parser, "expected 'switch' operand in parenthesis");
2875 vec_push(parser->breaks, label);
2877 rv = parse_switch_go(parser, block, out);
2880 if (vec_last(parser->breaks) != label) {
2881 parseerror(parser, "internal error: label stack corrupted");
2887 vec_pop(parser->breaks);
2892 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out)
2894 ast_expression *operand;
2897 ast_switch *switchnode;
2898 ast_switch_case swcase;
2901 bool noref, is_static;
2902 uint32_t qflags = 0;
2904 lex_ctx ctx = parser_ctx(parser);
2906 (void)block; /* not touching */
2909 /* parse into the expression */
2910 if (!parser_next(parser)) {
2911 parseerror(parser, "expected switch operand");
2914 /* parse the operand */
2915 operand = parse_expression_leave(parser, false, false, false);
2919 switchnode = ast_switch_new(ctx, operand);
2922 if (parser->tok != ')') {
2923 ast_delete(switchnode);
2924 parseerror(parser, "expected closing paren after 'switch' operand");
2928 /* parse over the opening paren */
2929 if (!parser_next(parser) || parser->tok != '{') {
2930 ast_delete(switchnode);
2931 parseerror(parser, "expected list of cases");
2935 if (!parser_next(parser)) {
2936 ast_delete(switchnode);
2937 parseerror(parser, "expected 'case' or 'default'");
2941 /* new block; allow some variables to be declared here */
2942 parser_enterblock(parser);
2945 if (parser->tok == TOKEN_IDENT)
2946 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2947 if (typevar || parser->tok == TOKEN_TYPENAME) {
2948 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL)) {
2949 ast_delete(switchnode);
2954 if (parse_qualifiers(parser, true, &cvq, &noref, &is_static, &qflags, NULL))
2956 if (cvq == CV_WRONG) {
2957 ast_delete(switchnode);
2960 if (!parse_variable(parser, block, false, cvq, NULL, noref, is_static, qflags, NULL)) {
2961 ast_delete(switchnode);
2970 while (parser->tok != '}') {
2971 ast_block *caseblock;
2973 if (!strcmp(parser_tokval(parser), "case")) {
2974 if (!parser_next(parser)) {
2975 ast_delete(switchnode);
2976 parseerror(parser, "expected expression for case");
2979 swcase.value = parse_expression_leave(parser, false, false, false);
2980 if (!swcase.value) {
2981 ast_delete(switchnode);
2982 parseerror(parser, "expected expression for case");
2985 if (!OPTS_FLAG(RELAXED_SWITCH)) {
2986 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
2987 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
2993 else if (!strcmp(parser_tokval(parser), "default")) {
2994 swcase.value = NULL;
2995 if (!parser_next(parser)) {
2996 ast_delete(switchnode);
2997 parseerror(parser, "expected colon");
3002 ast_delete(switchnode);
3003 parseerror(parser, "expected 'case' or 'default'");
3007 /* Now the colon and body */
3008 if (parser->tok != ':') {
3009 if (swcase.value) ast_unref(swcase.value);
3010 ast_delete(switchnode);
3011 parseerror(parser, "expected colon");
3015 if (!parser_next(parser)) {
3016 if (swcase.value) ast_unref(swcase.value);
3017 ast_delete(switchnode);
3018 parseerror(parser, "expected statements or case");
3021 caseblock = ast_block_new(parser_ctx(parser));
3023 if (swcase.value) ast_unref(swcase.value);
3024 ast_delete(switchnode);
3027 swcase.code = (ast_expression*)caseblock;
3028 vec_push(switchnode->cases, swcase);
3030 ast_expression *expr;
3031 if (parser->tok == '}')
3033 if (parser->tok == TOKEN_KEYWORD) {
3034 if (!strcmp(parser_tokval(parser), "case") ||
3035 !strcmp(parser_tokval(parser), "default"))
3040 if (!parse_statement(parser, caseblock, &expr, true)) {
3041 ast_delete(switchnode);
3046 if (!ast_block_add_expr(caseblock, expr)) {
3047 ast_delete(switchnode);
3053 parser_leaveblock(parser);
3056 if (parser->tok != '}') {
3057 ast_delete(switchnode);
3058 parseerror(parser, "expected closing paren of case list");
3061 if (!parser_next(parser)) {
3062 ast_delete(switchnode);
3063 parseerror(parser, "parse error after switch");
3066 *out = (ast_expression*)switchnode;
3070 /* parse computed goto sides */
3071 static ast_expression *parse_goto_computed(parser_t *parser, ast_expression **side) {
3072 ast_expression *on_true;
3073 ast_expression *on_false;
3074 ast_expression *cond;
3079 if (ast_istype(*side, ast_ternary)) {
3080 ast_ternary *tern = (ast_ternary*)*side;
3081 on_true = parse_goto_computed(parser, &tern->on_true);
3082 on_false = parse_goto_computed(parser, &tern->on_false);
3084 if (!on_true || !on_false) {
3085 parseerror(parser, "expected label or expression in ternary");
3086 if (on_true) ast_unref(on_true);
3087 if (on_false) ast_unref(on_false);
3095 return (ast_expression*)ast_ifthen_new(parser_ctx(parser), cond, on_true, on_false);
3096 } else if (ast_istype(*side, ast_label)) {
3097 ast_goto *gt = ast_goto_new(parser_ctx(parser), ((ast_label*)*side)->name);
3098 ast_goto_set_label(gt, ((ast_label*)*side));
3100 return (ast_expression*)gt;
3105 static bool parse_goto(parser_t *parser, ast_expression **out)
3107 ast_goto *gt = NULL;
3108 ast_expression *lbl;
3110 if (!parser_next(parser))
3113 if (parser->tok != TOKEN_IDENT) {
3114 ast_expression *expression;
3116 /* could be an expression i.e computed goto :-) */
3117 if (parser->tok != '(') {
3118 parseerror(parser, "expected label name after `goto`");
3122 /* failed to parse expression for goto */
3123 if (!(expression = parse_expression(parser, false, true)) ||
3124 !(*out = parse_goto_computed(parser, &expression))) {
3125 parseerror(parser, "invalid goto expression");
3126 ast_unref(expression);
3133 /* not computed goto */
3134 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
3135 lbl = parser_find_label(parser, gt->name);
3137 if (!ast_istype(lbl, ast_label)) {
3138 parseerror(parser, "internal error: label is not an ast_label");
3142 ast_goto_set_label(gt, (ast_label*)lbl);
3145 vec_push(parser->gotos, gt);
3147 if (!parser_next(parser) || parser->tok != ';') {
3148 parseerror(parser, "semicolon expected after goto label");
3151 if (!parser_next(parser)) {
3152 parseerror(parser, "parse error after goto");
3156 *out = (ast_expression*)gt;
3160 static bool parse_skipwhite(parser_t *parser)
3163 if (!parser_next(parser))
3165 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
3166 return parser->tok < TOKEN_ERROR;
3169 static bool parse_eol(parser_t *parser)
3171 if (!parse_skipwhite(parser))
3173 return parser->tok == TOKEN_EOL;
3176 static bool parse_pragma_do(parser_t *parser)
3178 if (!parser_next(parser) ||
3179 parser->tok != TOKEN_IDENT ||
3180 strcmp(parser_tokval(parser), "pragma"))
3182 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
3185 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
3186 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
3190 if (!strcmp(parser_tokval(parser), "noref")) {
3191 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
3192 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
3195 parser->noref = !!parser_token(parser)->constval.i;
3196 if (!parse_eol(parser)) {
3197 parseerror(parser, "parse error after `noref` pragma");
3203 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
3210 static bool parse_pragma(parser_t *parser)
3213 parser->lex->flags.preprocessing = true;
3214 parser->lex->flags.mergelines = true;
3215 rv = parse_pragma_do(parser);
3216 if (parser->tok != TOKEN_EOL) {
3217 parseerror(parser, "junk after pragma");
3220 parser->lex->flags.preprocessing = false;
3221 parser->lex->flags.mergelines = false;
3222 if (!parser_next(parser)) {
3223 parseerror(parser, "parse error after pragma");
3229 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
3231 bool noref, is_static;
3233 uint32_t qflags = 0;
3234 ast_value *typevar = NULL;
3235 char *vstring = NULL;
3239 if (parser->tok == TOKEN_IDENT)
3240 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3242 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
3244 /* local variable */
3246 parseerror(parser, "cannot declare a variable from here");
3249 if (opts.standard == COMPILER_QCC) {
3250 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
3253 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL))
3257 else if (parse_qualifiers(parser, !!block, &cvq, &noref, &is_static, &qflags, &vstring))
3259 if (cvq == CV_WRONG)
3261 return parse_variable(parser, block, true, cvq, NULL, noref, is_static, qflags, vstring);
3263 else if (parser->tok == TOKEN_KEYWORD)
3265 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
3270 if (!parser_next(parser)) {
3271 parseerror(parser, "parse error after __builtin_debug_printtype");
3275 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
3277 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
3278 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
3279 if (!parser_next(parser)) {
3280 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
3286 if (!parse_statement(parser, block, out, allow_cases))
3289 con_out("__builtin_debug_printtype: got no output node\n");
3292 ast_type_to_string(*out, ty, sizeof(ty));
3293 con_out("__builtin_debug_printtype: `%s`\n", ty);
3298 else if (!strcmp(parser_tokval(parser), "return"))
3300 return parse_return(parser, block, out);
3302 else if (!strcmp(parser_tokval(parser), "if"))
3304 return parse_if(parser, block, out);
3306 else if (!strcmp(parser_tokval(parser), "while"))
3308 return parse_while(parser, block, out);
3310 else if (!strcmp(parser_tokval(parser), "do"))
3312 return parse_dowhile(parser, block, out);
3314 else if (!strcmp(parser_tokval(parser), "for"))
3316 if (opts.standard == COMPILER_QCC) {
3317 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
3320 return parse_for(parser, block, out);
3322 else if (!strcmp(parser_tokval(parser), "break"))
3324 return parse_break_continue(parser, block, out, false);
3326 else if (!strcmp(parser_tokval(parser), "continue"))
3328 return parse_break_continue(parser, block, out, true);
3330 else if (!strcmp(parser_tokval(parser), "switch"))
3332 return parse_switch(parser, block, out);
3334 else if (!strcmp(parser_tokval(parser), "case") ||
3335 !strcmp(parser_tokval(parser), "default"))
3338 parseerror(parser, "unexpected 'case' label");
3343 else if (!strcmp(parser_tokval(parser), "goto"))
3345 return parse_goto(parser, out);
3347 else if (!strcmp(parser_tokval(parser), "typedef"))
3349 if (!parser_next(parser)) {
3350 parseerror(parser, "expected type definition after 'typedef'");
3353 return parse_typedef(parser);
3355 parseerror(parser, "Unexpected keyword");
3358 else if (parser->tok == '{')
3361 inner = parse_block(parser);
3364 *out = (ast_expression*)inner;
3367 else if (parser->tok == ':')
3371 if (!parser_next(parser)) {
3372 parseerror(parser, "expected label name");
3375 if (parser->tok != TOKEN_IDENT) {
3376 parseerror(parser, "label must be an identifier");
3379 label = (ast_label*)parser_find_label(parser, parser_tokval(parser));
3381 if (!label->undefined) {
3382 parseerror(parser, "label `%s` already defined", label->name);
3385 label->undefined = false;
3388 label = ast_label_new(parser_ctx(parser), parser_tokval(parser), false);
3389 vec_push(parser->labels, label);
3391 *out = (ast_expression*)label;
3392 if (!parser_next(parser)) {
3393 parseerror(parser, "parse error after label");
3396 for (i = 0; i < vec_size(parser->gotos); ++i) {
3397 if (!strcmp(parser->gotos[i]->name, label->name)) {
3398 ast_goto_set_label(parser->gotos[i], label);
3399 vec_remove(parser->gotos, i, 1);
3405 else if (parser->tok == ';')
3407 if (!parser_next(parser)) {
3408 parseerror(parser, "parse error after empty statement");
3415 ast_expression *exp = parse_expression(parser, false, false);
3419 if (!ast_side_effects(exp)) {
3420 if (genwarning(ast_ctx(exp), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
3427 static bool parse_enum(parser_t *parser)
3430 ast_value **values = NULL;
3431 ast_value *var = NULL;
3434 ast_expression *old;
3436 if (!parser_next(parser) || parser->tok != '{') {
3437 parseerror(parser, "expected `{` after `enum` keyword");
3442 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
3443 if (parser->tok == '}') {
3444 /* allow an empty enum */
3447 parseerror(parser, "expected identifier or `}`");
3451 old = parser_find_field(parser, parser_tokval(parser));
3453 old = parser_find_global(parser, parser_tokval(parser));
3455 parseerror(parser, "value `%s` has already been declared here: %s:%i",
3456 parser_tokval(parser), ast_ctx(old).file, ast_ctx(old).line);
3460 var = ast_value_new(parser_ctx(parser), parser_tokval(parser), TYPE_FLOAT);
3461 vec_push(values, var);
3462 var->cvq = CV_CONST;
3463 var->hasvalue = true;
3464 var->constval.vfloat = num++;
3466 parser_addglobal(parser, var->name, (ast_expression*)var);
3468 if (!parser_next(parser)) {
3469 parseerror(parser, "expected `=`, `}` or comma after identifier");
3473 if (parser->tok == ',')
3475 if (parser->tok == '}')
3477 if (parser->tok != '=') {
3478 parseerror(parser, "expected `=`, `}` or comma after identifier");
3482 if (!parser_next(parser)) {
3483 parseerror(parser, "expected expression after `=`");
3487 /* We got a value! */
3488 old = parse_expression_leave(parser, true, false, false);
3489 asvalue = (ast_value*)old;
3490 if (!ast_istype(old, ast_value) || asvalue->cvq != CV_CONST || !asvalue->hasvalue) {
3491 compile_error(ast_ctx(var), "constant value or expression expected");
3494 num = (var->constval.vfloat = asvalue->constval.vfloat) + 1;
3496 if (parser->tok == '}')
3498 if (parser->tok != ',') {
3499 parseerror(parser, "expected `}` or comma after expression");
3504 if (parser->tok != '}') {
3505 parseerror(parser, "internal error: breaking without `}`");
3509 if (!parser_next(parser) || parser->tok != ';') {
3510 parseerror(parser, "expected semicolon after enumeration");
3514 if (!parser_next(parser)) {
3515 parseerror(parser, "parse error after enumeration");
3527 static bool parse_block_into(parser_t *parser, ast_block *block)
3531 parser_enterblock(parser);
3533 if (!parser_next(parser)) { /* skip the '{' */
3534 parseerror(parser, "expected function body");
3538 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
3540 ast_expression *expr = NULL;
3541 if (parser->tok == '}')
3544 if (!parse_statement(parser, block, &expr, false)) {
3545 /* parseerror(parser, "parse error"); */
3551 if (!ast_block_add_expr(block, expr)) {
3558 if (parser->tok != '}') {
3561 (void)parser_next(parser);
3565 if (!parser_leaveblock(parser))
3567 return retval && !!block;
3570 static ast_block* parse_block(parser_t *parser)
3573 block = ast_block_new(parser_ctx(parser));
3576 if (!parse_block_into(parser, block)) {
3577 ast_block_delete(block);
3583 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
3585 if (parser->tok == '{') {
3586 *out = (ast_expression*)parse_block(parser);
3589 return parse_statement(parser, NULL, out, false);
3592 static bool create_vector_members(ast_value *var, ast_member **me)
3595 size_t len = strlen(var->name);
3597 for (i = 0; i < 3; ++i) {
3598 char *name = (char*)mem_a(len+3);
3599 memcpy(name, var->name, len);
3601 name[len+1] = 'x'+i;
3603 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
3612 do { ast_member_delete(me[--i]); } while(i);
3616 static bool parse_function_body(parser_t *parser, ast_value *var)
3618 ast_block *block = NULL;
3623 ast_expression *framenum = NULL;
3624 ast_expression *nextthink = NULL;
3625 /* None of the following have to be deleted */
3626 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
3627 ast_expression *gbl_time = NULL, *gbl_self = NULL;
3628 bool has_frame_think;
3632 has_frame_think = false;
3633 old = parser->function;
3635 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
3636 parseerror(parser, "gotos/labels leaking");
3640 if (var->expression.flags & AST_FLAG_VARIADIC) {
3641 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
3642 "variadic function with implementation will not be able to access additional parameters"))
3648 if (parser->tok == '[') {
3649 /* got a frame definition: [ framenum, nextthink ]
3650 * this translates to:
3651 * self.frame = framenum;
3652 * self.nextthink = time + 0.1;
3653 * self.think = nextthink;
3657 fld_think = parser_find_field(parser, "think");
3658 fld_nextthink = parser_find_field(parser, "nextthink");
3659 fld_frame = parser_find_field(parser, "frame");
3660 if (!fld_think || !fld_nextthink || !fld_frame) {
3661 parseerror(parser, "cannot use [frame,think] notation without the required fields");
3662 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
3665 gbl_time = parser_find_global(parser, "time");
3666 gbl_self = parser_find_global(parser, "self");
3667 if (!gbl_time || !gbl_self) {
3668 parseerror(parser, "cannot use [frame,think] notation without the required globals");
3669 parseerror(parser, "please declare the following globals: `time`, `self`");
3673 if (!parser_next(parser))
3676 framenum = parse_expression_leave(parser, true, false, false);
3678 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
3681 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
3682 ast_unref(framenum);
3683 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
3687 if (parser->tok != ',') {
3688 ast_unref(framenum);
3689 parseerror(parser, "expected comma after frame number in [frame,think] notation");
3690 parseerror(parser, "Got a %i\n", parser->tok);
3694 if (!parser_next(parser)) {
3695 ast_unref(framenum);
3699 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
3701 /* qc allows the use of not-yet-declared functions here
3702 * - this automatically creates a prototype */
3703 ast_value *thinkfunc;
3704 ast_expression *functype = fld_think->expression.next;
3706 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
3707 if (!thinkfunc || !ast_type_adopt(thinkfunc, functype)) {
3708 ast_unref(framenum);
3709 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
3713 if (!parser_next(parser)) {
3714 ast_unref(framenum);
3715 ast_delete(thinkfunc);
3719 parser_addglobal(parser, thinkfunc->name, (ast_expression*)thinkfunc);
3721 nextthink = (ast_expression*)thinkfunc;
3724 nextthink = parse_expression_leave(parser, true, false, false);
3726 ast_unref(framenum);
3727 parseerror(parser, "expected a think-function in [frame,think] notation");
3732 if (!ast_istype(nextthink, ast_value)) {
3733 parseerror(parser, "think-function in [frame,think] notation must be a constant");
3737 if (retval && parser->tok != ']') {
3738 parseerror(parser, "expected closing `]` for [frame,think] notation");
3742 if (retval && !parser_next(parser)) {
3746 if (retval && parser->tok != '{') {
3747 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
3752 ast_unref(nextthink);
3753 ast_unref(framenum);
3757 has_frame_think = true;
3760 block = ast_block_new(parser_ctx(parser));
3762 parseerror(parser, "failed to allocate block");
3763 if (has_frame_think) {
3764 ast_unref(nextthink);
3765 ast_unref(framenum);
3770 if (has_frame_think) {
3772 ast_expression *self_frame;
3773 ast_expression *self_nextthink;
3774 ast_expression *self_think;
3775 ast_expression *time_plus_1;
3776 ast_store *store_frame;
3777 ast_store *store_nextthink;
3778 ast_store *store_think;
3780 ctx = parser_ctx(parser);
3781 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
3782 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
3783 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
3785 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
3786 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
3788 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
3789 if (self_frame) ast_delete(self_frame);
3790 if (self_nextthink) ast_delete(self_nextthink);
3791 if (self_think) ast_delete(self_think);
3792 if (time_plus_1) ast_delete(time_plus_1);
3798 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
3799 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
3800 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
3803 ast_delete(self_frame);
3806 if (!store_nextthink) {
3807 ast_delete(self_nextthink);
3811 ast_delete(self_think);
3815 if (store_frame) ast_delete(store_frame);
3816 if (store_nextthink) ast_delete(store_nextthink);
3817 if (store_think) ast_delete(store_think);
3820 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
3821 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
3822 !ast_block_add_expr(block, (ast_expression*)store_think))
3829 parseerror(parser, "failed to generate code for [frame,think]");
3830 ast_unref(nextthink);
3831 ast_unref(framenum);
3837 parser_enterblock(parser);
3839 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
3841 ast_value *param = var->expression.params[parami];
3844 if (param->expression.vtype != TYPE_VECTOR &&
3845 (param->expression.vtype != TYPE_FIELD ||
3846 param->expression.next->expression.vtype != TYPE_VECTOR))
3851 if (!create_vector_members(param, me)) {
3852 ast_block_delete(block);
3856 for (e = 0; e < 3; ++e) {
3857 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
3858 ast_block_collect(block, (ast_expression*)me[e]);
3862 func = ast_function_new(ast_ctx(var), var->name, var);
3864 parseerror(parser, "failed to allocate function for `%s`", var->name);
3865 ast_block_delete(block);
3868 vec_push(parser->functions, func);
3870 parser->function = func;
3871 if (!parse_block_into(parser, block)) {
3872 ast_block_delete(block);
3876 vec_push(func->blocks, block);
3878 parser->function = old;
3879 if (!parser_leaveblock(parser))
3881 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
3882 parseerror(parser, "internal error: local scopes left");
3886 if (parser->tok == ';')
3887 return parser_next(parser);
3888 else if (opts.standard == COMPILER_QCC)
3889 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
3893 vec_pop(parser->functions);
3894 ast_function_delete(func);
3895 var->constval.vfunc = NULL;
3898 (void)!parser_leaveblock(parser);
3899 parser->function = old;
3903 static ast_expression *array_accessor_split(
3908 ast_expression *left,
3909 ast_expression *right
3915 lex_ctx ctx = ast_ctx(array);
3917 if (!left || !right) {
3918 if (left) ast_delete(left);
3919 if (right) ast_delete(right);
3923 cmp = ast_binary_new(ctx, INSTR_LT,
3924 (ast_expression*)index,
3925 (ast_expression*)parser_const_float(parser, middle));
3929 parseerror(parser, "internal error: failed to create comparison for array setter");
3933 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
3935 ast_delete(cmp); /* will delete left and right */
3936 parseerror(parser, "internal error: failed to create conditional jump for array setter");
3940 return (ast_expression*)ifthen;
3943 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
3945 lex_ctx ctx = ast_ctx(array);
3947 if (from+1 == afterend) {
3948 /* set this value */
3951 ast_array_index *subscript;
3953 int assignop = type_store_instr[value->expression.vtype];
3955 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3956 assignop = INSTR_STORE_V;
3958 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3962 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
3964 ast_delete(subscript);
3968 block = ast_block_new(ctx);
3974 if (!ast_block_add_expr(block, (ast_expression*)st)) {
3979 ret = ast_return_new(ctx, NULL);
3985 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
3990 return (ast_expression*)block;
3992 ast_expression *left, *right;
3993 size_t diff = afterend - from;
3994 size_t middle = from + diff/2;
3995 left = array_setter_node(parser, array, index, value, from, middle);
3996 right = array_setter_node(parser, array, index, value, middle, afterend);
3997 return array_accessor_split(parser, array, index, middle, left, right);
4001 static ast_expression *array_field_setter_node(
4010 lex_ctx ctx = ast_ctx(array);
4012 if (from+1 == afterend) {
4013 /* set this value */
4016 ast_entfield *entfield;
4017 ast_array_index *subscript;
4019 int assignop = type_storep_instr[value->expression.vtype];
4021 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
4022 assignop = INSTR_STOREP_V;
4024 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4028 entfield = ast_entfield_new_force(ctx,
4029 (ast_expression*)entity,
4030 (ast_expression*)subscript,
4031 (ast_expression*)subscript);
4033 ast_delete(subscript);
4037 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
4039 ast_delete(entfield);
4043 block = ast_block_new(ctx);
4049 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4054 ret = ast_return_new(ctx, NULL);
4060 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4065 return (ast_expression*)block;
4067 ast_expression *left, *right;
4068 size_t diff = afterend - from;
4069 size_t middle = from + diff/2;
4070 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
4071 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
4072 return array_accessor_split(parser, array, index, middle, left, right);
4076 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
4078 lex_ctx ctx = ast_ctx(array);
4080 if (from+1 == afterend) {
4082 ast_array_index *subscript;
4084 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4088 ret = ast_return_new(ctx, (ast_expression*)subscript);
4090 ast_delete(subscript);
4094 return (ast_expression*)ret;
4096 ast_expression *left, *right;
4097 size_t diff = afterend - from;
4098 size_t middle = from + diff/2;
4099 left = array_getter_node(parser, array, index, from, middle);
4100 right = array_getter_node(parser, array, index, middle, afterend);
4101 return array_accessor_split(parser, array, index, middle, left, right);
4105 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
4107 ast_function *func = NULL;
4108 ast_value *fval = NULL;
4109 ast_block *body = NULL;
4111 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
4113 parseerror(parser, "failed to create accessor function value");
4117 func = ast_function_new(ast_ctx(array), funcname, fval);
4120 parseerror(parser, "failed to create accessor function node");
4124 body = ast_block_new(ast_ctx(array));
4126 parseerror(parser, "failed to create block for array accessor");
4132 vec_push(func->blocks, body);
4135 vec_push(parser->accessors, fval);
4140 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
4142 ast_expression *root = NULL;
4143 ast_value *index = NULL;
4144 ast_value *value = NULL;
4148 if (!ast_istype(array->expression.next, ast_value)) {
4149 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4153 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4155 func = fval->constval.vfunc;
4156 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4158 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4159 value = ast_value_copy((ast_value*)array->expression.next);
4161 if (!index || !value) {
4162 parseerror(parser, "failed to create locals for array accessor");
4165 (void)!ast_value_set_name(value, "value"); /* not important */
4166 vec_push(fval->expression.params, index);
4167 vec_push(fval->expression.params, value);
4169 root = array_setter_node(parser, array, index, value, 0, array->expression.count);
4171 parseerror(parser, "failed to build accessor search tree");
4175 array->setter = fval;
4176 return ast_block_add_expr(func->blocks[0], root);
4178 if (index) ast_delete(index);
4179 if (value) ast_delete(value);
4180 if (root) ast_delete(root);
4186 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
4188 ast_expression *root = NULL;
4189 ast_value *entity = NULL;
4190 ast_value *index = NULL;
4191 ast_value *value = NULL;
4195 if (!ast_istype(array->expression.next, ast_value)) {
4196 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4200 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4202 func = fval->constval.vfunc;
4203 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4205 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
4206 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4207 value = ast_value_copy((ast_value*)array->expression.next);
4208 if (!entity || !index || !value) {
4209 parseerror(parser, "failed to create locals for array accessor");
4212 (void)!ast_value_set_name(value, "value"); /* not important */
4213 vec_push(fval->expression.params, entity);
4214 vec_push(fval->expression.params, index);
4215 vec_push(fval->expression.params, value);
4217 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
4219 parseerror(parser, "failed to build accessor search tree");
4223 array->setter = fval;
4224 return ast_block_add_expr(func->blocks[0], root);
4226 if (entity) ast_delete(entity);
4227 if (index) ast_delete(index);
4228 if (value) ast_delete(value);
4229 if (root) ast_delete(root);
4235 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4237 ast_expression *root = NULL;
4238 ast_value *index = NULL;
4242 /* NOTE: checking array->expression.next rather than elemtype since
4243 * for fields elemtype is a temporary fieldtype.
4245 if (!ast_istype(array->expression.next, ast_value)) {
4246 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4250 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4252 func = fval->constval.vfunc;
4253 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
4255 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4258 parseerror(parser, "failed to create locals for array accessor");
4261 vec_push(fval->expression.params, index);
4263 root = array_getter_node(parser, array, index, 0, array->expression.count);
4265 parseerror(parser, "failed to build accessor search tree");
4269 array->getter = fval;
4270 return ast_block_add_expr(func->blocks[0], root);
4272 if (index) ast_delete(index);
4273 if (root) ast_delete(root);
4279 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
4280 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
4288 bool variadic = false;
4290 ctx = parser_ctx(parser);
4292 /* for the sake of less code we parse-in in this function */
4293 if (!parser_next(parser)) {
4294 parseerror(parser, "expected parameter list");
4300 /* parse variables until we hit a closing paren */
4301 while (parser->tok != ')') {
4303 /* there must be commas between them */
4304 if (parser->tok != ',') {
4305 parseerror(parser, "expected comma or end of parameter list");
4308 if (!parser_next(parser)) {
4309 parseerror(parser, "expected parameter");
4315 if (parser->tok == TOKEN_DOTS) {
4316 /* '...' indicates a varargs function */
4318 if (!parser_next(parser)) {
4319 parseerror(parser, "expected parameter");
4322 if (parser->tok != ')') {
4323 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4329 /* for anything else just parse a typename */
4330 param = parse_typename(parser, NULL, NULL);
4333 vec_push(params, param);
4334 if (param->expression.vtype >= TYPE_VARIANT) {
4335 char tname[1024]; /* typename is reserved in C++ */
4336 ast_type_to_string((ast_expression*)param, tname, sizeof(tname));
4337 parseerror(parser, "type not supported as part of a parameter list: %s", tname);
4343 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
4347 if (vec_size(params) > 8 && opts.standard == COMPILER_QCC)
4348 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
4351 if (!parser_next(parser)) {
4352 parseerror(parser, "parse error after typename");
4356 /* now turn 'var' into a function type */
4357 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
4358 fval->expression.next = (ast_expression*)var;
4360 fval->expression.flags |= AST_FLAG_VARIADIC;
4363 var->expression.params = params;
4370 for (i = 0; i < vec_size(params); ++i)
4371 ast_delete(params[i]);
4376 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
4378 ast_expression *cexp;
4379 ast_value *cval, *tmp;
4382 ctx = parser_ctx(parser);
4384 if (!parser_next(parser)) {
4386 parseerror(parser, "expected array-size");
4390 cexp = parse_expression_leave(parser, true, false, false);
4392 if (!cexp || !ast_istype(cexp, ast_value)) {
4396 parseerror(parser, "expected array-size as constant positive integer");
4399 cval = (ast_value*)cexp;
4401 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
4402 tmp->expression.next = (ast_expression*)var;
4405 if (cval->expression.vtype == TYPE_INTEGER)
4406 tmp->expression.count = cval->constval.vint;
4407 else if (cval->expression.vtype == TYPE_FLOAT)
4408 tmp->expression.count = cval->constval.vfloat;
4412 parseerror(parser, "array-size must be a positive integer constant");
4417 if (parser->tok != ']') {
4419 parseerror(parser, "expected ']' after array-size");
4422 if (!parser_next(parser)) {
4424 parseerror(parser, "error after parsing array size");
4430 /* Parse a complete typename.
4431 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
4432 * but when parsing variables separated by comma
4433 * 'storebase' should point to where the base-type should be kept.
4434 * The base type makes up every bit of type information which comes *before* the
4437 * The following will be parsed in its entirety:
4439 * The 'basetype' in this case is 'void()'
4440 * and if there's a comma after it, say:
4442 * then the type-information 'void()' can be stored in 'storebase'
4444 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
4446 ast_value *var, *tmp;
4449 const char *name = NULL;
4450 bool isfield = false;
4451 bool wasarray = false;
4452 size_t morefields = 0;
4454 ctx = parser_ctx(parser);
4456 /* types may start with a dot */
4457 if (parser->tok == '.') {
4459 /* if we parsed a dot we need a typename now */
4460 if (!parser_next(parser)) {
4461 parseerror(parser, "expected typename for field definition");
4465 /* Further dots are handled seperately because they won't be part of the
4468 while (parser->tok == '.') {
4470 if (!parser_next(parser)) {
4471 parseerror(parser, "expected typename for field definition");
4476 if (parser->tok == TOKEN_IDENT)
4477 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
4478 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
4479 parseerror(parser, "expected typename");
4483 /* generate the basic type value */
4484 if (cached_typedef) {
4485 var = ast_value_copy(cached_typedef);
4486 ast_value_set_name(var, "<type(from_def)>");
4488 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
4490 for (; morefields; --morefields) {
4491 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
4492 tmp->expression.next = (ast_expression*)var;
4496 /* do not yet turn into a field - remember:
4497 * .void() foo; is a field too
4498 * .void()() foo; is a function
4502 if (!parser_next(parser)) {
4504 parseerror(parser, "parse error after typename");
4508 /* an opening paren now starts the parameter-list of a function
4509 * this is where original-QC has parameter lists.
4510 * We allow a single parameter list here.
4511 * Much like fteqcc we don't allow `float()() x`
4513 if (parser->tok == '(') {
4514 var = parse_parameter_list(parser, var);
4519 /* store the base if requested */
4521 *storebase = ast_value_copy(var);
4523 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4524 tmp->expression.next = (ast_expression*)*storebase;
4529 /* there may be a name now */
4530 if (parser->tok == TOKEN_IDENT) {
4531 name = util_strdup(parser_tokval(parser));
4533 if (!parser_next(parser)) {
4535 parseerror(parser, "error after variable or field declaration");
4540 /* now this may be an array */
4541 if (parser->tok == '[') {
4543 var = parse_arraysize(parser, var);
4548 /* This is the point where we can turn it into a field */
4550 /* turn it into a field if desired */
4551 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4552 tmp->expression.next = (ast_expression*)var;
4556 /* now there may be function parens again */
4557 if (parser->tok == '(' && opts.standard == COMPILER_QCC)
4558 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4559 if (parser->tok == '(' && wasarray)
4560 parseerror(parser, "arrays as part of a return type is not supported");
4561 while (parser->tok == '(') {
4562 var = parse_parameter_list(parser, var);
4571 /* finally name it */
4573 if (!ast_value_set_name(var, name)) {
4575 parseerror(parser, "internal error: failed to set name");
4578 /* free the name, ast_value_set_name duplicates */
4585 static bool parse_typedef(parser_t *parser)
4587 ast_value *typevar, *oldtype;
4588 ast_expression *old;
4590 typevar = parse_typename(parser, NULL, NULL);
4595 if ( (old = parser_find_var(parser, typevar->name)) ) {
4596 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
4597 " -> `%s` has been declared here: %s:%i",
4598 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
4599 ast_delete(typevar);
4603 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
4604 parseerror(parser, "type `%s` has already been declared here: %s:%i",
4605 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
4606 ast_delete(typevar);
4610 vec_push(parser->_typedefs, typevar);
4611 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
4613 if (parser->tok != ';') {
4614 parseerror(parser, "expected semicolon after typedef");
4617 if (!parser_next(parser)) {
4618 parseerror(parser, "parse error after typedef");
4625 static const char *cvq_to_str(int cvq) {
4627 case CV_NONE: return "none";
4628 case CV_VAR: return "`var`";
4629 case CV_CONST: return "`const`";
4630 default: return "<INVALID>";
4634 static bool parser_check_qualifiers(parser_t *parser, const ast_value *var, const ast_value *proto)
4637 if (proto->cvq != var->cvq) {
4638 if (!(proto->cvq == CV_CONST && var->cvq == CV_NONE &&
4639 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
4640 parser->tok == '='))
4642 return !parsewarning(parser, WARN_DIFFERENT_QUALIFIERS,
4643 "`%s` declared with different qualifiers: %s\n"
4644 " -> previous declaration here: %s:%i uses %s",
4645 var->name, cvq_to_str(var->cvq),
4646 ast_ctx(proto).file, ast_ctx(proto).line,
4647 cvq_to_str(proto->cvq));
4650 av = (var ->expression.flags & AST_FLAG_NORETURN);
4651 ao = (proto->expression.flags & AST_FLAG_NORETURN);
4653 return !parsewarning(parser, WARN_DIFFERENT_ATTRIBUTES,
4654 "`%s` declared with different attributes%s\n"
4655 " -> previous declaration here: %s:%i",
4656 var->name, (av ? ": noreturn" : ""),
4657 ast_ctx(proto).file, ast_ctx(proto).line,
4658 (ao ? ": noreturn" : ""));
4663 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref, bool is_static, uint32_t qflags, char *vstring)
4667 ast_expression *old;
4671 ast_value *basetype = NULL;
4673 bool isparam = false;
4674 bool isvector = false;
4675 bool cleanvar = true;
4676 bool wasarray = false;
4680 if (!localblock && is_static)
4681 parseerror(parser, "`static` qualifier is not supported in global scope");
4683 /* get the first complete variable */
4684 var = parse_typename(parser, &basetype, cached_typedef);
4687 ast_delete(basetype);
4695 /* Part 0: finish the type */
4696 if (parser->tok == '(') {
4697 if (opts.standard == COMPILER_QCC)
4698 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4699 var = parse_parameter_list(parser, var);
4705 /* we only allow 1-dimensional arrays */
4706 if (parser->tok == '[') {
4708 var = parse_arraysize(parser, var);
4714 if (parser->tok == '(' && wasarray) {
4715 parseerror(parser, "arrays as part of a return type is not supported");
4716 /* we'll still parse the type completely for now */
4718 /* for functions returning functions */
4719 while (parser->tok == '(') {
4720 if (opts.standard == COMPILER_QCC)
4721 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4722 var = parse_parameter_list(parser, var);
4729 var->cvq = qualifier;
4730 var->expression.flags |= qflags;
4731 if (var->expression.flags & AST_FLAG_DEPRECATED)
4732 var->desc = vstring;
4735 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
4736 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
4737 * is then filled with the previous definition and the parameter-names replaced.
4739 if (!strcmp(var->name, "nil")) {
4740 if (OPTS_FLAG(UNTYPED_NIL)) {
4741 if (!localblock || !OPTS_FLAG(PERMISSIVE))
4742 parseerror(parser, "name `nil` not allowed (try -fpermissive)");
4744 (void)!parsewarning(parser, WARN_RESERVED_NAMES, "variable name `nil` is reserved");
4747 /* Deal with end_sys_ vars */
4749 if (!strcmp(var->name, "end_sys_globals")) {
4751 parser->crc_globals = vec_size(parser->globals);
4754 else if (!strcmp(var->name, "end_sys_fields")) {
4756 parser->crc_fields = vec_size(parser->fields);
4759 if (was_end && var->expression.vtype == TYPE_FIELD) {
4760 if (parsewarning(parser, WARN_END_SYS_FIELDS,
4761 "global '%s' hint should not be a field",
4762 parser_tokval(parser)))
4769 if (!nofields && var->expression.vtype == TYPE_FIELD)
4771 /* deal with field declarations */
4772 old = parser_find_field(parser, var->name);
4774 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
4775 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
4784 parseerror(parser, "field `%s` already declared here: %s:%i",
4785 var->name, ast_ctx(old).file, ast_ctx(old).line);
4790 if (opts.standard == COMPILER_QCC &&
4791 (old = parser_find_global(parser, var->name)))
4793 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
4794 parseerror(parser, "field `%s` already declared here: %s:%i",
4795 var->name, ast_ctx(old).file, ast_ctx(old).line);
4802 /* deal with other globals */
4803 old = parser_find_global(parser, var->name);
4804 if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
4806 /* This is a function which had a prototype */
4807 if (!ast_istype(old, ast_value)) {
4808 parseerror(parser, "internal error: prototype is not an ast_value");
4812 proto = (ast_value*)old;
4813 proto->desc = var->desc;
4814 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
4815 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
4817 ast_ctx(proto).file, ast_ctx(proto).line);
4821 /* we need the new parameter-names */
4822 for (i = 0; i < vec_size(proto->expression.params); ++i)
4823 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
4824 if (!parser_check_qualifiers(parser, var, proto)) {
4831 proto->expression.flags |= var->expression.flags;
4839 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
4840 "global `%s` already declared here: %s:%i",
4841 var->name, ast_ctx(old).file, ast_ctx(old).line))
4846 proto = (ast_value*)old;
4847 if (!ast_istype(old, ast_value)) {
4848 parseerror(parser, "internal error: not an ast_value");
4853 if (!parser_check_qualifiers(parser, var, proto)) {
4858 proto->expression.flags |= var->expression.flags;
4862 if (opts.standard == COMPILER_QCC &&
4863 (old = parser_find_field(parser, var->name)))
4865 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
4866 parseerror(parser, "global `%s` already declared here: %s:%i",
4867 var->name, ast_ctx(old).file, ast_ctx(old).line);
4874 else /* it's not a global */
4876 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
4877 if (old && !isparam) {
4878 parseerror(parser, "local `%s` already declared here: %s:%i",
4879 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
4883 old = parser_find_local(parser, var->name, 0, &isparam);
4884 if (old && isparam) {
4885 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
4886 "local `%s` is shadowing a parameter", var->name))
4888 parseerror(parser, "local `%s` already declared here: %s:%i",
4889 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
4893 if (opts.standard != COMPILER_GMQCC) {
4901 /* in a noref section we simply bump the usecount */
4902 if (noref || parser->noref)
4906 * Create the global/local, and deal with vector types.
4909 if (var->expression.vtype == TYPE_VECTOR)
4911 else if (var->expression.vtype == TYPE_FIELD &&
4912 var->expression.next->expression.vtype == TYPE_VECTOR)
4916 if (!create_vector_members(var, me)) {
4923 /* deal with global variables, fields, functions */
4924 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
4925 var->isfield = true;
4926 vec_push(parser->fields, (ast_expression*)var);
4927 util_htset(parser->htfields, var->name, var);
4929 for (i = 0; i < 3; ++i) {
4930 vec_push(parser->fields, (ast_expression*)me[i]);
4931 util_htset(parser->htfields, me[i]->name, me[i]);
4936 parser_addglobal(parser, var->name, (ast_expression*)var);
4938 for (i = 0; i < 3; ++i) {
4939 parser_addglobal(parser, me[i]->name, (ast_expression*)me[i]);
4945 /* a static adds itself to be generated like any other global
4946 * but is added to the local namespace instead
4948 char *defname = NULL;
4949 size_t prefix_len, ln;
4951 ln = strlen(parser->function->name);
4952 vec_append(defname, ln, parser->function->name);
4954 vec_append(defname, 2, "::");
4955 /* remember the length up to here */
4956 prefix_len = vec_size(defname);
4958 /* Add it to the local scope */
4959 util_htset(vec_last(parser->variables), var->name, (void*)var);
4963 vec_last(parser->correct_variables),
4964 &vec_last(parser->correct_variables_score),
4968 /* now rename the global */
4969 ln = strlen(var->name);
4970 vec_append(defname, ln, var->name);
4971 ast_value_set_name(var, defname);
4973 /* push it to the to-be-generated globals */
4974 vec_push(parser->globals, (ast_expression*)var);
4976 /* same game for the vector members */
4978 for (i = 0; i < 3; ++i) {
4979 util_htset(vec_last(parser->variables), me[i]->name, (void*)(me[i]));
4983 vec_last(parser->correct_variables),
4984 &vec_last(parser->correct_variables_score),
4988 vec_shrinkto(defname, prefix_len);
4989 ln = strlen(me[i]->name);
4990 vec_append(defname, ln, me[i]->name);
4991 ast_member_set_name(me[i], defname);
4993 vec_push(parser->globals, (ast_expression*)me[i]);
4998 vec_push(localblock->locals, var);
4999 parser_addlocal(parser, var->name, (ast_expression*)var);
5001 for (i = 0; i < 3; ++i) {
5002 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
5003 ast_block_collect(localblock, (ast_expression*)me[i]);
5009 me[0] = me[1] = me[2] = NULL;
5014 if (var->expression.vtype == TYPE_ARRAY) {
5016 snprintf(name, sizeof(name), "%s##SET", var->name);
5017 if (!parser_create_array_setter(parser, var, name))
5019 snprintf(name, sizeof(name), "%s##GET", var->name);
5020 if (!parser_create_array_getter(parser, var, var->expression.next, name))
5023 else if (!localblock && !nofields &&
5024 var->expression.vtype == TYPE_FIELD &&
5025 var->expression.next->expression.vtype == TYPE_ARRAY)
5028 ast_expression *telem;
5030 ast_value *array = (ast_value*)var->expression.next;
5032 if (!ast_istype(var->expression.next, ast_value)) {
5033 parseerror(parser, "internal error: field element type must be an ast_value");
5037 snprintf(name, sizeof(name), "%s##SETF", var->name);
5038 if (!parser_create_array_field_setter(parser, array, name))
5041 telem = ast_type_copy(ast_ctx(var), array->expression.next);
5042 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
5043 tfield->expression.next = telem;
5044 snprintf(name, sizeof(name), "%s##GETFP", var->name);
5045 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
5053 if (parser->tok == ';') {
5054 ast_delete(basetype);
5055 if (!parser_next(parser)) {
5056 parseerror(parser, "error after variable declaration");
5062 if (parser->tok == ',')
5066 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
5069 parseerror(parser, "missing comma or semicolon while parsing variables");
5073 if (localblock && opts.standard == COMPILER_QCC) {
5074 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
5075 "initializing expression turns variable `%s` into a constant in this standard",
5082 if (parser->tok != '{') {
5083 if (parser->tok != '=') {
5084 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
5088 if (!parser_next(parser)) {
5089 parseerror(parser, "error parsing initializer");
5093 else if (opts.standard == COMPILER_QCC) {
5094 parseerror(parser, "expected '=' before function body in this standard");
5097 if (parser->tok == '#') {
5098 ast_function *func = NULL;
5101 parseerror(parser, "cannot declare builtins within functions");
5104 if (var->expression.vtype != TYPE_FUNCTION) {
5105 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
5108 if (!parser_next(parser)) {
5109 parseerror(parser, "expected builtin number");
5112 if (parser->tok != TOKEN_INTCONST) {
5113 parseerror(parser, "builtin number must be an integer constant");
5116 if (parser_token(parser)->constval.i < 0) {
5117 parseerror(parser, "builtin number must be an integer greater than zero");
5121 if (var->hasvalue) {
5122 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
5123 "builtin `%s` has already been defined\n"
5124 " -> previous declaration here: %s:%i",
5125 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
5129 func = ast_function_new(ast_ctx(var), var->name, var);
5131 parseerror(parser, "failed to allocate function for `%s`", var->name);
5134 vec_push(parser->functions, func);
5136 func->builtin = -parser_token(parser)->constval.i-1;
5139 if (!parser_next(parser)) {
5140 parseerror(parser, "expected comma or semicolon");
5142 ast_function_delete(func);
5143 var->constval.vfunc = NULL;
5147 else if (parser->tok == '{' || parser->tok == '[')
5150 parseerror(parser, "cannot declare functions within functions");
5155 ast_ctx(proto) = parser_ctx(parser);
5157 if (!parse_function_body(parser, var))
5159 ast_delete(basetype);
5160 for (i = 0; i < vec_size(parser->gotos); ++i)
5161 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
5162 vec_free(parser->gotos);
5163 vec_free(parser->labels);
5166 ast_expression *cexp;
5169 cexp = parse_expression_leave(parser, true, false, false);
5174 cval = (ast_value*)cexp;
5175 if (cval != parser->nil &&
5176 (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
5179 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
5183 if (!OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
5184 qualifier != CV_VAR)
5186 var->cvq = CV_CONST;
5188 if (cval == parser->nil)
5189 var->expression.flags |= AST_FLAG_INITIALIZED;
5192 var->hasvalue = true;
5193 if (cval->expression.vtype == TYPE_STRING)
5194 var->constval.vstring = parser_strdup(cval->constval.vstring);
5195 else if (cval->expression.vtype == TYPE_FIELD)
5196 var->constval.vfield = cval;
5198 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
5204 shunt sy = { NULL, NULL };
5207 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
5208 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
5209 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
5210 if (!parser_sy_apply_operator(parser, &sy))
5213 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
5214 parseerror(parser, "internal error: leaked operands");
5215 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
5225 if (parser->tok == ',') {
5226 if (!parser_next(parser)) {
5227 parseerror(parser, "expected another variable");
5231 if (parser->tok != TOKEN_IDENT) {
5232 parseerror(parser, "expected another variable");
5235 var = ast_value_copy(basetype);
5237 ast_value_set_name(var, parser_tokval(parser));
5238 if (!parser_next(parser)) {
5239 parseerror(parser, "error parsing variable declaration");
5245 if (parser->tok != ';') {
5246 parseerror(parser, "missing semicolon after variables");
5250 if (!parser_next(parser)) {
5251 parseerror(parser, "parse error after variable declaration");
5255 ast_delete(basetype);
5259 if (cleanvar && var)
5261 ast_delete(basetype);
5265 ast_delete(basetype);
5266 if (cleanvar && var)
5268 if (me[0]) ast_member_delete(me[0]);
5269 if (me[1]) ast_member_delete(me[1]);
5270 if (me[2]) ast_member_delete(me[2]);
5274 static bool parser_global_statement(parser_t *parser)
5278 bool is_static = false;
5279 uint32_t qflags = 0;
5280 ast_value *istype = NULL;
5281 char *vstring = NULL;
5283 if (parser->tok == TOKEN_IDENT)
5284 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
5286 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
5288 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false, 0, NULL);
5290 else if (parse_qualifiers(parser, false, &cvq, &noref, &is_static, &qflags, &vstring))
5292 if (cvq == CV_WRONG)
5294 return parse_variable(parser, NULL, true, cvq, NULL, noref, is_static, qflags, vstring);
5296 else if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "enum"))
5298 return parse_enum(parser);
5300 else if (parser->tok == TOKEN_KEYWORD)
5302 if (!strcmp(parser_tokval(parser), "typedef")) {
5303 if (!parser_next(parser)) {
5304 parseerror(parser, "expected type definition after 'typedef'");
5307 return parse_typedef(parser);
5309 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
5312 else if (parser->tok == '#')
5314 return parse_pragma(parser);
5316 else if (parser->tok == '$')
5318 if (!parser_next(parser)) {
5319 parseerror(parser, "parse error");
5325 parseerror(parser, "unexpected token: %s", parser->lex->tok.value);
5331 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
5333 return util_crc16(old, str, strlen(str));
5336 static void progdefs_crc_file(const char *str)
5338 /* write to progdefs.h here */
5342 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
5344 old = progdefs_crc_sum(old, str);
5345 progdefs_crc_file(str);
5349 static void generate_checksum(parser_t *parser)
5351 uint16_t crc = 0xFFFF;
5355 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
5356 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
5358 progdefs_crc_file("\tint\tpad;\n");
5359 progdefs_crc_file("\tint\tofs_return[3];\n");
5360 progdefs_crc_file("\tint\tofs_parm0[3];\n");
5361 progdefs_crc_file("\tint\tofs_parm1[3];\n");
5362 progdefs_crc_file("\tint\tofs_parm2[3];\n");
5363 progdefs_crc_file("\tint\tofs_parm3[3];\n");
5364 progdefs_crc_file("\tint\tofs_parm4[3];\n");
5365 progdefs_crc_file("\tint\tofs_parm5[3];\n");
5366 progdefs_crc_file("\tint\tofs_parm6[3];\n");
5367 progdefs_crc_file("\tint\tofs_parm7[3];\n");
5369 for (i = 0; i < parser->crc_globals; ++i) {
5370 if (!ast_istype(parser->globals[i], ast_value))
5372 value = (ast_value*)(parser->globals[i]);
5373 switch (value->expression.vtype) {
5374 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5375 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5376 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5377 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5379 crc = progdefs_crc_both(crc, "\tint\t");
5382 crc = progdefs_crc_both(crc, value->name);
5383 crc = progdefs_crc_both(crc, ";\n");
5385 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
5386 for (i = 0; i < parser->crc_fields; ++i) {
5387 if (!ast_istype(parser->fields[i], ast_value))
5389 value = (ast_value*)(parser->fields[i]);
5390 switch (value->expression.next->expression.vtype) {
5391 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5392 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5393 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5394 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5396 crc = progdefs_crc_both(crc, "\tint\t");
5399 crc = progdefs_crc_both(crc, value->name);
5400 crc = progdefs_crc_both(crc, ";\n");
5402 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
5407 static parser_t *parser;
5414 parser = (parser_t*)mem_a(sizeof(parser_t));
5418 memset(parser, 0, sizeof(*parser));
5420 for (i = 0; i < operator_count; ++i) {
5421 if (operators[i].id == opid1('=')) {
5422 parser->assign_op = operators+i;
5426 if (!parser->assign_op) {
5427 printf("internal error: initializing parser: failed to find assign operator\n");
5432 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
5433 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
5434 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
5435 vec_push(parser->_blocktypedefs, 0);
5438 vec_push(parser->correct_variables, correct_trie_new());
5439 vec_push(parser->correct_variables_score, NULL);
5441 empty_ctx.file = "<internal>";
5443 parser->nil = ast_value_new(empty_ctx, "nil", TYPE_NIL);
5444 parser->nil->cvq = CV_CONST;
5445 if (OPTS_FLAG(UNTYPED_NIL))
5446 util_htset(parser->htglobals, "nil", (void*)parser->nil);
5448 parser->const_vec[0] = ast_value_new(empty_ctx, "<vector.x>", TYPE_NOEXPR);
5449 parser->const_vec[1] = ast_value_new(empty_ctx, "<vector.y>", TYPE_NOEXPR);
5450 parser->const_vec[2] = ast_value_new(empty_ctx, "<vector.z>", TYPE_NOEXPR);
5452 if (opts.add_info) {
5453 parser->reserved_version = ast_value_new(empty_ctx, "reserved:version", TYPE_STRING);
5454 parser->reserved_version->cvq = CV_CONST;
5455 parser->reserved_version->hasvalue = true;
5456 parser->reserved_version->expression.flags |= AST_FLAG_INCLUDE_DEF;
5457 parser->reserved_version->constval.vstring = util_strdup(GMQCC_FULL_VERSION_STRING);
5459 parser->reserved_version = NULL;
5464 bool parser_compile()
5466 /* initial lexer/parser state */
5467 parser->lex->flags.noops = true;
5469 if (parser_next(parser))
5471 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
5473 if (!parser_global_statement(parser)) {
5474 if (parser->tok == TOKEN_EOF)
5475 parseerror(parser, "unexpected eof");
5476 else if (compile_errors)
5477 parseerror(parser, "there have been errors, bailing out");
5478 lex_close(parser->lex);
5484 parseerror(parser, "parse error");
5485 lex_close(parser->lex);
5490 lex_close(parser->lex);
5493 return !compile_errors;
5496 bool parser_compile_file(const char *filename)
5498 parser->lex = lex_open(filename);
5500 con_err("failed to open file \"%s\"\n", filename);
5503 return parser_compile();
5506 bool parser_compile_string(const char *name, const char *str, size_t len)
5508 parser->lex = lex_open_string(str, len, name);
5510 con_err("failed to create lexer for string \"%s\"\n", name);
5513 return parser_compile();
5516 void parser_cleanup()
5519 for (i = 0; i < vec_size(parser->accessors); ++i) {
5520 ast_delete(parser->accessors[i]->constval.vfunc);
5521 parser->accessors[i]->constval.vfunc = NULL;
5522 ast_delete(parser->accessors[i]);
5524 for (i = 0; i < vec_size(parser->functions); ++i) {
5525 ast_delete(parser->functions[i]);
5527 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
5528 ast_delete(parser->imm_vector[i]);
5530 for (i = 0; i < vec_size(parser->imm_string); ++i) {
5531 ast_delete(parser->imm_string[i]);
5533 for (i = 0; i < vec_size(parser->imm_float); ++i) {
5534 ast_delete(parser->imm_float[i]);
5536 for (i = 0; i < vec_size(parser->fields); ++i) {
5537 ast_delete(parser->fields[i]);
5539 for (i = 0; i < vec_size(parser->globals); ++i) {
5540 ast_delete(parser->globals[i]);
5542 vec_free(parser->accessors);
5543 vec_free(parser->functions);
5544 vec_free(parser->imm_vector);
5545 vec_free(parser->imm_string);
5546 vec_free(parser->imm_float);
5547 vec_free(parser->globals);
5548 vec_free(parser->fields);
5550 for (i = 0; i < vec_size(parser->variables); ++i)
5551 util_htdel(parser->variables[i]);
5552 vec_free(parser->variables);
5553 vec_free(parser->_blocklocals);
5554 vec_free(parser->_locals);
5557 for (i = 0; i < vec_size(parser->correct_variables); ++i) {
5558 correct_del(parser->correct_variables[i], parser->correct_variables_score[i]);
5560 vec_free(parser->correct_variables);
5561 vec_free(parser->correct_variables_score);
5564 for (i = 0; i < vec_size(parser->_typedefs); ++i)
5565 ast_delete(parser->_typedefs[i]);
5566 vec_free(parser->_typedefs);
5567 for (i = 0; i < vec_size(parser->typedefs); ++i)
5568 util_htdel(parser->typedefs[i]);
5569 vec_free(parser->typedefs);
5570 vec_free(parser->_blocktypedefs);
5572 vec_free(parser->_block_ctx);
5574 vec_free(parser->labels);
5575 vec_free(parser->gotos);
5576 vec_free(parser->breaks);
5577 vec_free(parser->continues);
5579 ast_value_delete(parser->nil);
5581 ast_value_delete(parser->const_vec[0]);
5582 ast_value_delete(parser->const_vec[1]);
5583 ast_value_delete(parser->const_vec[2]);
5588 bool parser_finish(const char *output)
5594 if (compile_errors) {
5595 con_out("*** there were compile errors\n");
5599 ir = ir_builder_new("gmqcc_out");
5601 con_out("failed to allocate builder\n");
5605 for (i = 0; i < vec_size(parser->fields); ++i) {
5608 if (!ast_istype(parser->fields[i], ast_value))
5610 field = (ast_value*)parser->fields[i];
5611 hasvalue = field->hasvalue;
5612 field->hasvalue = false;
5613 if (!ast_global_codegen((ast_value*)field, ir, true)) {
5614 con_out("failed to generate field %s\n", field->name);
5615 ir_builder_delete(ir);
5620 ast_expression *subtype;
5621 field->hasvalue = true;
5622 subtype = field->expression.next;
5623 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
5624 if (subtype->expression.vtype == TYPE_FIELD)
5625 ifld->fieldtype = subtype->expression.next->expression.vtype;
5626 else if (subtype->expression.vtype == TYPE_FUNCTION)
5627 ifld->outtype = subtype->expression.next->expression.vtype;
5628 (void)!ir_value_set_field(field->ir_v, ifld);
5631 for (i = 0; i < vec_size(parser->globals); ++i) {
5633 if (!ast_istype(parser->globals[i], ast_value))
5635 asvalue = (ast_value*)(parser->globals[i]);
5636 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
5637 retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
5638 "unused global: `%s`", asvalue->name);
5640 if (!ast_global_codegen(asvalue, ir, false)) {
5641 con_out("failed to generate global %s\n", asvalue->name);
5642 ir_builder_delete(ir);
5646 if (parser->reserved_version &&
5647 !ast_global_codegen(parser->reserved_version, ir, false))
5649 con_out("failed to generate reserved::version");
5650 ir_builder_delete(ir);
5653 for (i = 0; i < vec_size(parser->imm_float); ++i) {
5654 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
5655 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
5656 ir_builder_delete(ir);
5660 for (i = 0; i < vec_size(parser->imm_string); ++i) {
5661 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
5662 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
5663 ir_builder_delete(ir);
5667 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
5668 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
5669 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
5670 ir_builder_delete(ir);
5674 for (i = 0; i < vec_size(parser->globals); ++i) {
5676 if (!ast_istype(parser->globals[i], ast_value))
5678 asvalue = (ast_value*)(parser->globals[i]);
5679 if (!(asvalue->expression.flags & AST_FLAG_INITIALIZED))
5681 if (asvalue->cvq == CV_CONST && !asvalue->hasvalue)
5682 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_CONSTANT,
5683 "uninitialized constant: `%s`",
5685 else if ((asvalue->cvq == CV_NONE || asvalue->cvq == CV_CONST) && !asvalue->hasvalue)
5686 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_GLOBAL,
5687 "uninitialized global: `%s`",
5690 if (!ast_generate_accessors(asvalue, ir)) {
5691 ir_builder_delete(ir);
5695 for (i = 0; i < vec_size(parser->fields); ++i) {
5697 asvalue = (ast_value*)(parser->fields[i]->expression.next);
5699 if (!ast_istype((ast_expression*)asvalue, ast_value))
5701 if (asvalue->expression.vtype != TYPE_ARRAY)
5703 if (!ast_generate_accessors(asvalue, ir)) {
5704 ir_builder_delete(ir);
5708 for (i = 0; i < vec_size(parser->functions); ++i) {
5709 if (!ast_function_codegen(parser->functions[i], ir)) {
5710 con_out("failed to generate function %s\n", parser->functions[i]->name);
5711 ir_builder_delete(ir);
5716 ir_builder_dump(ir, con_out);
5717 for (i = 0; i < vec_size(parser->functions); ++i) {
5718 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
5719 con_out("failed to finalize function %s\n", parser->functions[i]->name);
5720 ir_builder_delete(ir);
5725 if (compile_Werrors) {
5726 con_out("*** there were warnings treated as errors\n");
5727 compile_show_werrors();
5733 ir_builder_dump(ir, con_out);
5735 generate_checksum(parser);
5737 if (!ir_builder_generate(ir, output)) {
5738 con_out("*** failed to generate output file\n");
5739 ir_builder_delete(ir);
5744 ir_builder_delete(ir);