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
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11 * so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in all
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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,
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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 128
35 #define TYPEDEF_HT_SIZE 16
41 ast_expression **globals;
42 ast_expression **fields;
43 ast_function **functions;
44 ast_value **imm_float;
45 ast_value **imm_string;
46 ast_value **imm_vector;
49 /* must be deleted first, they reference immediates and values */
50 ast_value **accessors;
52 ast_value *imm_float_zero;
53 ast_value *imm_float_one;
54 ast_value *imm_vector_zero;
56 ast_value *reserved_version;
61 ast_function *function;
63 /* All the labels the function defined...
64 * Should they be in ast_function instead?
69 const char **continues;
71 /* A list of hashtables for each scope */
77 /* same as above but for the spelling corrector */
78 correct_trie_t **correct_variables;
79 size_t ***correct_variables_score; /* vector of vector of size_t* */
81 /* not to be used directly, we use the hash table */
82 ast_expression **_locals;
84 ast_value **_typedefs;
85 size_t *_blocktypedefs;
88 /* we store the '=' operator info */
89 const oper_info *assign_op;
92 ast_value *const_vec[3];
97 /* collected information */
98 size_t max_param_count;
101 static ast_expression * const intrinsic_debug_typestring = (ast_expression*)0x1;
103 static void parser_enterblock(parser_t *parser);
104 static bool parser_leaveblock(parser_t *parser);
105 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e);
106 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e);
107 static bool parse_typedef(parser_t *parser);
108 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref, bool is_static, uint32_t qflags, char *vstring);
109 static ast_block* parse_block(parser_t *parser);
110 static bool parse_block_into(parser_t *parser, ast_block *block);
111 static bool parse_statement_or_block(parser_t *parser, ast_expression **out);
112 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases);
113 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels);
114 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels);
115 static ast_value* parser_create_array_setter_proto(parser_t *parser, ast_value *array, const char *funcname);
116 static ast_value* parser_create_array_getter_proto(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname);
117 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
119 static void parseerror(parser_t *parser, const char *fmt, ...)
123 vcompile_error(parser->lex->tok.ctx, fmt, ap);
127 /* returns true if it counts as an error */
128 static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
133 r = vcompile_warning(parser->lex->tok.ctx, warntype, fmt, ap);
138 static bool GMQCC_WARN genwarning(lex_ctx ctx, int warntype, const char *fmt, ...)
143 r = vcompile_warning(ctx, warntype, fmt, ap);
148 /**********************************************************************
149 * some maths used for constant folding
152 vector vec3_add(vector a, vector b)
161 vector vec3_sub(vector a, vector b)
170 qcfloat vec3_mulvv(vector a, vector b)
172 return (a.x * b.x + a.y * b.y + a.z * b.z);
175 vector vec3_mulvf(vector a, float b)
184 /**********************************************************************
188 bool parser_next(parser_t *parser)
190 /* lex_do kills the previous token */
191 parser->tok = lex_do(parser->lex);
192 if (parser->tok == TOKEN_EOF)
194 if (parser->tok >= TOKEN_ERROR) {
195 parseerror(parser, "lex error");
201 #define parser_tokval(p) ((p)->lex->tok.value)
202 #define parser_token(p) (&((p)->lex->tok))
203 #define parser_ctx(p) ((p)->lex->tok.ctx)
205 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];
216 ctx = parser_ctx(parser);
218 memset(&ctx, 0, sizeof(ctx));
220 out = ast_value_new(ctx, "#IMMEDIATE", TYPE_FLOAT);
222 out->hasvalue = true;
223 out->constval.vfloat = d;
224 vec_push(parser->imm_float, out);
228 static ast_value* parser_const_float_0(parser_t *parser)
230 if (!parser->imm_float_zero)
231 parser->imm_float_zero = parser_const_float(parser, 0);
232 return parser->imm_float_zero;
235 static ast_value* parser_const_float_1(parser_t *parser)
237 if (!parser->imm_float_one)
238 parser->imm_float_one = parser_const_float(parser, 1);
239 return parser->imm_float_one;
242 static char *parser_strdup(const char *str)
245 /* actually dup empty strings */
246 char *out = (char*)mem_a(1);
250 return util_strdup(str);
253 static ast_value* parser_const_string(parser_t *parser, const char *str, bool dotranslate)
257 for (i = 0; i < vec_size(parser->imm_string); ++i) {
258 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
259 return parser->imm_string[i];
263 snprintf(name, sizeof(name), "dotranslate_%lu", (unsigned long)(parser->translated++));
264 out = ast_value_new(parser_ctx(parser), name, TYPE_STRING);
266 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
268 out->hasvalue = true;
269 out->constval.vstring = parser_strdup(str);
270 vec_push(parser->imm_string, out);
274 static ast_value* parser_const_vector(parser_t *parser, vector v)
278 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
279 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
280 return parser->imm_vector[i];
282 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
284 out->hasvalue = true;
285 out->constval.vvec = v;
286 vec_push(parser->imm_vector, out);
290 static ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
296 return parser_const_vector(parser, v);
299 static ast_value* parser_const_vector_0(parser_t *parser)
301 if (!parser->imm_vector_zero)
302 parser->imm_vector_zero = parser_const_vector_f(parser, 0, 0, 0);
303 return parser->imm_vector_zero;
306 static ast_expression* parser_find_field(parser_t *parser, const char *name)
308 return ( ast_expression*)util_htget(parser->htfields, name);
311 static ast_expression* parser_find_label(parser_t *parser, const char *name)
314 for(i = 0; i < vec_size(parser->labels); i++)
315 if (!strcmp(parser->labels[i]->name, name))
316 return (ast_expression*)parser->labels[i];
320 static ast_expression* parser_find_global(parser_t *parser, const char *name)
322 return (ast_expression*)util_htget(parser->htglobals, name);
325 static ast_expression* parser_find_param(parser_t *parser, const char *name)
329 if (!parser->function)
331 fun = parser->function->vtype;
332 for (i = 0; i < vec_size(fun->expression.params); ++i) {
333 if (!strcmp(fun->expression.params[i]->name, name))
334 return (ast_expression*)(fun->expression.params[i]);
339 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
344 hash = util_hthash(parser->htglobals, name);
347 for (i = vec_size(parser->variables); i > upto;) {
349 if ( (e = (ast_expression*)util_htgeth(parser->variables[i], name, hash)) )
353 return parser_find_param(parser, name);
356 static ast_expression* parser_find_var(parser_t *parser, const char *name)
360 v = parser_find_local(parser, name, 0, &dummy);
361 if (!v) v = parser_find_global(parser, name);
365 static ast_value* parser_find_typedef(parser_t *parser, const char *name, size_t upto)
369 hash = util_hthash(parser->typedefs[0], name);
371 for (i = vec_size(parser->typedefs); i > upto;) {
373 if ( (e = (ast_value*)util_htgeth(parser->typedefs[i], name, hash)) )
381 size_t etype; /* 0 = expression, others are operators */
385 ast_block *block; /* for commas and function calls */
404 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
415 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
419 e.out = (ast_expression*)v;
426 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
428 e.etype = 1 + (op - operators);
437 static sy_elem syparen(lex_ctx ctx, size_t off) {
448 /* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
449 * so we need to rotate it to become ent.(foo[n]).
451 static bool rotate_entfield_array_index_nodes(ast_expression **out)
453 ast_array_index *index;
454 ast_entfield *entfield;
458 ast_expression *entity;
460 lex_ctx ctx = ast_ctx(*out);
462 if (!ast_istype(*out, ast_array_index))
464 index = (ast_array_index*)*out;
466 if (!ast_istype(index->array, ast_entfield))
468 entfield = (ast_entfield*)index->array;
470 if (!ast_istype(entfield->field, ast_value))
472 field = (ast_value*)entfield->field;
475 entity = entfield->entity;
479 index = ast_array_index_new(ctx, (ast_expression*)field, sub);
480 entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
481 *out = (ast_expression*)entfield;
486 static bool immediate_is_true(lex_ctx ctx, ast_value *v)
488 switch (v->expression.vtype) {
490 return !!v->constval.vfloat;
492 return !!v->constval.vint;
494 if (OPTS_FLAG(CORRECT_LOGIC))
495 return v->constval.vvec.x &&
496 v->constval.vvec.y &&
499 return !!(v->constval.vvec.x);
501 if (!v->constval.vstring)
503 if (v->constval.vstring && OPTS_FLAG(TRUE_EMPTY_STRINGS))
505 return !!v->constval.vstring[0];
507 compile_error(ctx, "internal error: immediate_is_true on invalid type");
508 return !!v->constval.vfunc;
512 static bool parser_sy_apply_operator(parser_t *parser, shunt *sy)
516 ast_expression *out = NULL;
517 ast_expression *exprs[3];
518 ast_block *blocks[3];
519 ast_value *asvalue[3];
520 ast_binstore *asbinstore;
521 size_t i, assignop, addop, subop;
522 qcint generated_op = 0;
527 if (!vec_size(sy->ops)) {
528 parseerror(parser, "internal error: missing operator");
532 if (vec_last(sy->ops).isparen) {
533 parseerror(parser, "unmatched parenthesis");
537 op = &operators[vec_last(sy->ops).etype - 1];
538 ctx = vec_last(sy->ops).ctx;
540 if (vec_size(sy->out) < op->operands) {
541 compile_error(ctx, "internal error: not enough operands: %i (operator %s (%i))", vec_size(sy->out),
542 op->op, (int)op->id);
546 vec_shrinkby(sy->ops, 1);
548 /* op(:?) has no input and no output */
552 vec_shrinkby(sy->out, op->operands);
553 for (i = 0; i < op->operands; ++i) {
554 exprs[i] = sy->out[vec_size(sy->out)+i].out;
555 blocks[i] = sy->out[vec_size(sy->out)+i].block;
556 asvalue[i] = (ast_value*)exprs[i];
558 if (exprs[i]->expression.vtype == TYPE_NOEXPR &&
559 !(i != 0 && op->id == opid2('?',':')) &&
560 !(i == 1 && op->id == opid1('.')))
562 if (ast_istype(exprs[i], ast_label))
563 compile_error(ast_ctx(exprs[i]), "expected expression, got an unknown identifier");
565 compile_error(ast_ctx(exprs[i]), "not an expression");
566 (void)!compile_warning(ast_ctx(exprs[i]), WARN_DEBUG, "expression %u\n", (unsigned int)i);
570 if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
571 compile_error(ctx, "internal error: operator cannot be applied on empty blocks");
575 #define NotSameType(T) \
576 (exprs[0]->expression.vtype != exprs[1]->expression.vtype || \
577 exprs[0]->expression.vtype != T)
578 #define CanConstFold1(A) \
579 (ast_istype((A), ast_value) && ((ast_value*)(A))->hasvalue && (((ast_value*)(A))->cvq == CV_CONST) &&\
580 (A)->expression.vtype != TYPE_FUNCTION)
581 #define CanConstFold(A, B) \
582 (CanConstFold1(A) && CanConstFold1(B))
583 #define ConstV(i) (asvalue[(i)]->constval.vvec)
584 #define ConstF(i) (asvalue[(i)]->constval.vfloat)
585 #define ConstS(i) (asvalue[(i)]->constval.vstring)
589 compile_error(ctx, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
593 if (exprs[0]->expression.vtype == TYPE_VECTOR &&
594 exprs[1]->expression.vtype == TYPE_NOEXPR)
596 if (exprs[1] == (ast_expression*)parser->const_vec[0])
597 out = (ast_expression*)ast_member_new(ctx, exprs[0], 0, NULL);
598 else if (exprs[1] == (ast_expression*)parser->const_vec[1])
599 out = (ast_expression*)ast_member_new(ctx, exprs[0], 1, NULL);
600 else if (exprs[1] == (ast_expression*)parser->const_vec[2])
601 out = (ast_expression*)ast_member_new(ctx, exprs[0], 2, NULL);
603 compile_error(ctx, "access to invalid vector component");
607 else if (exprs[0]->expression.vtype == TYPE_ENTITY) {
608 if (exprs[1]->expression.vtype != TYPE_FIELD) {
609 compile_error(ast_ctx(exprs[1]), "type error: right hand of member-operand should be an entity-field");
612 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
614 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
615 compile_error(ast_ctx(exprs[1]), "vectors cannot be accessed this way");
619 compile_error(ast_ctx(exprs[1]), "type error: member-of operator on something that is not an entity or vector");
625 if (exprs[0]->expression.vtype != TYPE_ARRAY &&
626 !(exprs[0]->expression.vtype == TYPE_FIELD &&
627 exprs[0]->expression.next->expression.vtype == TYPE_ARRAY))
629 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
630 compile_error(ast_ctx(exprs[0]), "cannot index value of type %s", ty1);
633 if (exprs[1]->expression.vtype != TYPE_FLOAT) {
634 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
635 compile_error(ast_ctx(exprs[1]), "index must be of type float, not %s", ty1);
638 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
639 if (rotate_entfield_array_index_nodes(&out))
642 /* This is not broken in fteqcc anymore */
643 if (opts.standard != COMPILER_GMQCC) {
644 /* this error doesn't need to make us bail out */
645 (void)!parsewarning(parser, WARN_EXTENSIONS,
646 "accessing array-field members of an entity without parenthesis\n"
647 " -> this is an extension from -std=gmqcc");
654 if (vec_size(sy->paren) && vec_last(sy->paren) == PAREN_FUNC) {
655 vec_push(sy->out, syexp(ctx, exprs[0]));
656 vec_push(sy->out, syexp(ctx, exprs[1]));
657 vec_last(sy->argc)++;
661 if (!ast_block_add_expr(blocks[0], exprs[1]))
664 blocks[0] = ast_block_new(ctx);
665 if (!ast_block_add_expr(blocks[0], exprs[0]) ||
666 !ast_block_add_expr(blocks[0], exprs[1]))
671 if (!ast_block_set_type(blocks[0], exprs[1]))
674 vec_push(sy->out, syblock(ctx, blocks[0]));
681 switch (exprs[0]->expression.vtype) {
683 if (CanConstFold1(exprs[0]))
684 out = (ast_expression*)parser_const_float(parser, -ConstF(0));
686 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
687 (ast_expression*)parser_const_float_0(parser),
691 if (CanConstFold1(exprs[0]))
692 out = (ast_expression*)parser_const_vector_f(parser,
693 -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
695 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
696 (ast_expression*)parser_const_vector_0(parser),
700 compile_error(ctx, "invalid types used in expression: cannot negate type %s",
701 type_name[exprs[0]->expression.vtype]);
707 switch (exprs[0]->expression.vtype) {
709 if (CanConstFold1(exprs[0]))
710 out = (ast_expression*)parser_const_float(parser, !ConstF(0));
712 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
715 if (CanConstFold1(exprs[0]))
716 out = (ast_expression*)parser_const_float(parser,
717 (!ConstV(0).x && !ConstV(0).y && !ConstV(0).z));
719 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
722 if (CanConstFold1(exprs[0])) {
723 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
724 out = (ast_expression*)parser_const_float(parser, !ConstS(0));
726 out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
728 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
729 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
731 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
734 /* we don't constant-fold NOT for these types */
736 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
739 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
742 compile_error(ctx, "invalid types used in expression: cannot logically negate type %s",
743 type_name[exprs[0]->expression.vtype]);
749 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
750 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
752 compile_error(ctx, "invalid types used in expression: cannot add type %s and %s",
753 type_name[exprs[0]->expression.vtype],
754 type_name[exprs[1]->expression.vtype]);
757 switch (exprs[0]->expression.vtype) {
759 if (CanConstFold(exprs[0], exprs[1]))
761 out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
764 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
767 if (CanConstFold(exprs[0], exprs[1]))
768 out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
770 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
773 compile_error(ctx, "invalid types used in expression: cannot add type %s and %s",
774 type_name[exprs[0]->expression.vtype],
775 type_name[exprs[1]->expression.vtype]);
780 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
781 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
783 compile_error(ctx, "invalid types used in expression: cannot subtract type %s from %s",
784 type_name[exprs[1]->expression.vtype],
785 type_name[exprs[0]->expression.vtype]);
788 switch (exprs[0]->expression.vtype) {
790 if (CanConstFold(exprs[0], exprs[1]))
791 out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
793 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
796 if (CanConstFold(exprs[0], exprs[1]))
797 out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
799 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
802 compile_error(ctx, "invalid types used in expression: cannot subtract type %s from %s",
803 type_name[exprs[1]->expression.vtype],
804 type_name[exprs[0]->expression.vtype]);
809 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
810 !(exprs[0]->expression.vtype == TYPE_VECTOR &&
811 exprs[1]->expression.vtype == TYPE_FLOAT) &&
812 !(exprs[1]->expression.vtype == TYPE_VECTOR &&
813 exprs[0]->expression.vtype == TYPE_FLOAT)
816 compile_error(ctx, "invalid types used in expression: cannot multiply types %s and %s",
817 type_name[exprs[1]->expression.vtype],
818 type_name[exprs[0]->expression.vtype]);
821 switch (exprs[0]->expression.vtype) {
823 if (exprs[1]->expression.vtype == TYPE_VECTOR)
825 if (CanConstFold(exprs[0], exprs[1]))
826 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
828 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
832 if (CanConstFold(exprs[0], exprs[1]))
833 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
835 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
839 if (exprs[1]->expression.vtype == TYPE_FLOAT)
841 if (CanConstFold(exprs[0], exprs[1]))
842 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
844 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
848 if (CanConstFold(exprs[0], exprs[1]))
849 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
850 else if (OPTS_OPTIMIZATION(OPTIM_VECTOR_COMPONENTS) && CanConstFold1(exprs[0])) {
851 vector vec = ConstV(0);
852 if (!vec.y && !vec.z) { /* 'n 0 0' * v */
853 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
854 out = (ast_expression*)ast_member_new(ctx, exprs[1], 0, 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.x), out);
860 else if (!vec.x && !vec.z) { /* '0 n 0' * v */
861 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
862 out = (ast_expression*)ast_member_new(ctx, exprs[1], 1, 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.y), out);
868 else if (!vec.x && !vec.y) { /* '0 n 0' * v */
869 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
870 out = (ast_expression*)ast_member_new(ctx, exprs[1], 2, NULL);
871 out->expression.node.keep = false;
872 ((ast_member*)out)->rvalue = true;
874 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.z), out);
877 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
879 else if (OPTS_OPTIMIZATION(OPTIM_VECTOR_COMPONENTS) && CanConstFold1(exprs[1])) {
880 vector vec = ConstV(1);
881 if (!vec.y && !vec.z) { /* v * 'n 0 0' */
882 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
883 out = (ast_expression*)ast_member_new(ctx, exprs[0], 0, 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.x));
889 else if (!vec.x && !vec.z) { /* v * '0 n 0' */
890 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
891 out = (ast_expression*)ast_member_new(ctx, exprs[0], 1, 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.y));
897 else if (!vec.x && !vec.y) { /* v * '0 n 0' */
898 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
899 out = (ast_expression*)ast_member_new(ctx, exprs[0], 2, NULL);
900 out->expression.node.keep = false;
901 ((ast_member*)out)->rvalue = true;
903 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.z));
906 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
909 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
913 compile_error(ctx, "invalid types used in expression: cannot multiply types %s and %s",
914 type_name[exprs[1]->expression.vtype],
915 type_name[exprs[0]->expression.vtype]);
920 if (exprs[1]->expression.vtype != TYPE_FLOAT) {
921 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
922 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
923 compile_error(ctx, "invalid types used in expression: cannot divide tyeps %s and %s", ty1, ty2);
926 if (exprs[0]->expression.vtype == TYPE_FLOAT) {
927 if (CanConstFold(exprs[0], exprs[1]))
928 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
930 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
932 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
933 if (CanConstFold(exprs[0], exprs[1]))
934 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), 1.0/ConstF(1)));
936 if (CanConstFold1(exprs[1])) {
937 out = (ast_expression*)parser_const_float(parser, 1.0 / ConstF(1));
939 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
940 (ast_expression*)parser_const_float_1(parser),
944 compile_error(ctx, "internal error: failed to generate division");
947 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], out);
952 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
953 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
954 compile_error(ctx, "invalid types used in expression: cannot divide tyeps %s and %s", ty1, ty2);
960 compile_error(ctx, "qc does not have a modulo operator");
964 if (NotSameType(TYPE_FLOAT)) {
965 compile_error(ctx, "invalid types used in expression: cannot perform bit operations between types %s and %s",
966 type_name[exprs[0]->expression.vtype],
967 type_name[exprs[1]->expression.vtype]);
970 if (CanConstFold(exprs[0], exprs[1]))
971 out = (ast_expression*)parser_const_float(parser,
972 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
973 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
975 out = (ast_expression*)ast_binary_new(ctx,
976 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
980 compile_error(ast_ctx(exprs[0]), "Not Yet Implemented: bit-xor via ^");
985 if (CanConstFold(exprs[0], exprs[1]) && ! NotSameType(TYPE_FLOAT)) {
986 if (op->id == opid2('<','<'))
987 out = (ast_expression*)parser_const_float(parser, (double)((int)(ConstF(0)) << (int)(ConstF(1))));
989 out = (ast_expression*)parser_const_float(parser, (double)((int)(ConstF(0)) >> (int)(ConstF(1))));
992 case opid3('<','<','='):
993 case opid3('>','>','='):
994 compile_error(ast_ctx(exprs[0]), "Not Yet Implemented: bit-shifts");
998 generated_op += 1; /* INSTR_OR */
1000 generated_op += INSTR_AND;
1001 if (CanConstFold(exprs[0], exprs[1]))
1003 if (OPTS_FLAG(PERL_LOGIC)) {
1004 if (immediate_is_true(ctx, asvalue[0]))
1008 out = (ast_expression*)parser_const_float(parser,
1009 ( (generated_op == INSTR_OR)
1010 ? (immediate_is_true(ctx, asvalue[0]) || immediate_is_true(ctx, asvalue[1]))
1011 : (immediate_is_true(ctx, asvalue[0]) && immediate_is_true(ctx, asvalue[1])) )
1016 if (OPTS_FLAG(PERL_LOGIC) && !ast_compare_type(exprs[0], exprs[1])) {
1017 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1018 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1019 compile_error(ctx, "invalid types for logical operation with -fperl-logic: %s and %s", ty1, ty2);
1022 for (i = 0; i < 2; ++i) {
1023 if (OPTS_FLAG(CORRECT_LOGIC) && exprs[i]->expression.vtype == TYPE_VECTOR) {
1024 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[i]);
1026 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
1028 exprs[i] = out; out = NULL;
1029 if (OPTS_FLAG(PERL_LOGIC)) {
1030 /* here we want to keep the right expressions' type */
1034 else if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && exprs[i]->expression.vtype == TYPE_STRING) {
1035 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[i]);
1037 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
1039 exprs[i] = out; out = NULL;
1040 if (OPTS_FLAG(PERL_LOGIC)) {
1041 /* here we want to keep the right expressions' type */
1046 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
1050 case opid2('?',':'):
1051 if (vec_last(sy->paren) != PAREN_TERNARY2) {
1052 compile_error(ctx, "mismatched parenthesis/ternary");
1056 if (!ast_compare_type(exprs[1], exprs[2])) {
1057 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
1058 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
1059 compile_error(ctx, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
1062 if (CanConstFold1(exprs[0]))
1063 out = (immediate_is_true(ctx, asvalue[0]) ? exprs[1] : exprs[2]);
1065 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
1069 generated_op += 1; /* INSTR_GT */
1071 generated_op += 1; /* INSTR_LT */
1072 case opid2('>', '='):
1073 generated_op += 1; /* INSTR_GE */
1074 case opid2('<', '='):
1075 generated_op += INSTR_LE;
1076 if (NotSameType(TYPE_FLOAT)) {
1077 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
1078 type_name[exprs[0]->expression.vtype],
1079 type_name[exprs[1]->expression.vtype]);
1082 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
1084 case opid2('!', '='):
1085 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
1086 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
1087 type_name[exprs[0]->expression.vtype],
1088 type_name[exprs[1]->expression.vtype]);
1091 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
1093 case opid2('=', '='):
1094 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
1095 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
1096 type_name[exprs[0]->expression.vtype],
1097 type_name[exprs[1]->expression.vtype]);
1100 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
1104 if (ast_istype(exprs[0], ast_entfield)) {
1105 ast_expression *field = ((ast_entfield*)exprs[0])->field;
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_storep_instr[TYPE_VECTOR];
1113 assignop = type_storep_instr[exprs[0]->expression.vtype];
1114 if (assignop == AINSTR_END || !ast_compare_type(field->expression.next, exprs[1]))
1116 ast_type_to_string(field->expression.next, ty1, sizeof(ty1));
1117 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1118 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1119 field->expression.next->expression.vtype == TYPE_FUNCTION &&
1120 exprs[1]->expression.vtype == TYPE_FUNCTION)
1122 (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
1123 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1126 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1131 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1132 exprs[0]->expression.vtype == TYPE_FIELD &&
1133 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
1135 assignop = type_store_instr[TYPE_VECTOR];
1138 assignop = type_store_instr[exprs[0]->expression.vtype];
1141 if (assignop == AINSTR_END) {
1142 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1143 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1144 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1146 else if (!ast_compare_type(exprs[0], exprs[1]))
1148 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1149 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1150 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1151 exprs[0]->expression.vtype == TYPE_FUNCTION &&
1152 exprs[1]->expression.vtype == TYPE_FUNCTION)
1154 (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
1155 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1158 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1161 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1162 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1164 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
1166 case opid3('+','+','P'):
1167 case opid3('-','-','P'):
1169 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1170 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1171 compile_error(ast_ctx(exprs[0]), "invalid type for prefix increment: %s", ty1);
1174 if (op->id == opid3('+','+','P'))
1175 addop = INSTR_ADD_F;
1177 addop = INSTR_SUB_F;
1178 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1179 compile_error(ast_ctx(exprs[0]), "assignment to constant `%s`", asvalue[0]->name);
1181 if (ast_istype(exprs[0], ast_entfield)) {
1182 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1184 (ast_expression*)parser_const_float_1(parser));
1186 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1188 (ast_expression*)parser_const_float_1(parser));
1191 case opid3('S','+','+'):
1192 case opid3('S','-','-'):
1194 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1195 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1196 compile_error(ast_ctx(exprs[0]), "invalid type for suffix increment: %s", ty1);
1199 if (op->id == opid3('S','+','+')) {
1200 addop = INSTR_ADD_F;
1201 subop = INSTR_SUB_F;
1203 addop = INSTR_SUB_F;
1204 subop = INSTR_ADD_F;
1206 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1207 compile_error(ast_ctx(exprs[0]), "assignment to constant `%s`", asvalue[0]->name);
1209 if (ast_istype(exprs[0], ast_entfield)) {
1210 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1212 (ast_expression*)parser_const_float_1(parser));
1214 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1216 (ast_expression*)parser_const_float_1(parser));
1220 out = (ast_expression*)ast_binary_new(ctx, subop,
1222 (ast_expression*)parser_const_float_1(parser));
1224 case opid2('+','='):
1225 case opid2('-','='):
1226 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
1227 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
1229 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1230 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1231 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1235 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1236 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1238 if (ast_istype(exprs[0], ast_entfield))
1239 assignop = type_storep_instr[exprs[0]->expression.vtype];
1241 assignop = type_store_instr[exprs[0]->expression.vtype];
1242 switch (exprs[0]->expression.vtype) {
1244 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1245 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
1246 exprs[0], exprs[1]);
1249 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1250 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1251 exprs[0], exprs[1]);
1254 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1255 type_name[exprs[0]->expression.vtype],
1256 type_name[exprs[1]->expression.vtype]);
1260 case opid2('*','='):
1261 case opid2('/','='):
1262 if (exprs[1]->expression.vtype != TYPE_FLOAT ||
1263 !(exprs[0]->expression.vtype == TYPE_FLOAT ||
1264 exprs[0]->expression.vtype == TYPE_VECTOR))
1266 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1267 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1268 compile_error(ctx, "invalid types used in expression: %s and %s",
1272 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1273 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1275 if (ast_istype(exprs[0], ast_entfield))
1276 assignop = type_storep_instr[exprs[0]->expression.vtype];
1278 assignop = type_store_instr[exprs[0]->expression.vtype];
1279 switch (exprs[0]->expression.vtype) {
1281 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1282 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1283 exprs[0], exprs[1]);
1286 if (op->id == opid2('*','=')) {
1287 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1288 exprs[0], exprs[1]);
1290 /* there's no DIV_VF */
1291 if (CanConstFold1(exprs[1])) {
1292 out = (ast_expression*)parser_const_float(parser, 1.0 / ConstF(1));
1294 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
1295 (ast_expression*)parser_const_float_1(parser),
1299 compile_error(ctx, "internal error: failed to generate division");
1302 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1307 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1308 type_name[exprs[0]->expression.vtype],
1309 type_name[exprs[1]->expression.vtype]);
1313 case opid2('&','='):
1314 case opid2('|','='):
1315 if (NotSameType(TYPE_FLOAT)) {
1316 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1317 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1318 compile_error(ctx, "invalid types used in expression: %s and %s",
1322 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1323 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1325 if (ast_istype(exprs[0], ast_entfield))
1326 assignop = type_storep_instr[exprs[0]->expression.vtype];
1328 assignop = type_store_instr[exprs[0]->expression.vtype];
1329 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1330 (op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1331 exprs[0], exprs[1]);
1333 case opid3('&','~','='):
1334 /* This is like: a &= ~(b);
1335 * But QC has no bitwise-not, so we implement it as
1338 if (NotSameType(TYPE_FLOAT)) {
1339 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1340 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1341 compile_error(ctx, "invalid types used in expression: %s and %s",
1345 if (ast_istype(exprs[0], ast_entfield))
1346 assignop = type_storep_instr[exprs[0]->expression.vtype];
1348 assignop = type_store_instr[exprs[0]->expression.vtype];
1349 out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1352 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1353 compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
1355 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1356 asbinstore->keep_dest = true;
1357 out = (ast_expression*)asbinstore;
1363 compile_error(ctx, "failed to apply operator %s", op->op);
1367 vec_push(sy->out, syexp(ctx, out));
1371 static bool parser_close_call(parser_t *parser, shunt *sy)
1373 /* was a function call */
1374 ast_expression *fun;
1375 ast_value *funval = NULL;
1379 size_t paramcount, i;
1381 fid = vec_last(sy->ops).off;
1382 vec_shrinkby(sy->ops, 1);
1384 /* out[fid] is the function
1385 * everything above is parameters...
1387 if (!vec_size(sy->argc)) {
1388 parseerror(parser, "internal error: no argument counter available");
1392 paramcount = vec_last(sy->argc);
1395 if (vec_size(sy->out) < fid) {
1396 parseerror(parser, "internal error: broken function call%lu < %lu+%lu\n",
1397 (unsigned long)vec_size(sy->out),
1399 (unsigned long)paramcount);
1403 fun = sy->out[fid].out;
1405 if (fun == intrinsic_debug_typestring) {
1407 if (fid+2 != vec_size(sy->out) ||
1408 vec_last(sy->out).block)
1410 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1413 ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
1414 ast_unref(vec_last(sy->out).out);
1415 sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
1416 (ast_expression*)parser_const_string(parser, ty, false));
1417 vec_shrinkby(sy->out, 1);
1421 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1425 if (fid+1 < vec_size(sy->out))
1428 if (fid+1 + paramcount != vec_size(sy->out)) {
1429 parseerror(parser, "internal error: parameter count mismatch: (%lu+1+%lu), %lu",
1430 (unsigned long)fid, (unsigned long)paramcount, (unsigned long)vec_size(sy->out));
1434 for (i = 0; i < paramcount; ++i)
1435 vec_push(call->params, sy->out[fid+1 + i].out);
1436 vec_shrinkby(sy->out, paramcount);
1437 (void)!ast_call_check_types(call);
1438 if (parser->max_param_count < paramcount)
1439 parser->max_param_count = paramcount;
1441 if (ast_istype(fun, ast_value)) {
1442 funval = (ast_value*)fun;
1443 if ((fun->expression.flags & AST_FLAG_VARIADIC) &&
1444 !(/*funval->cvq == CV_CONST && */ funval->hasvalue && funval->constval.vfunc->builtin))
1446 call->va_count = (ast_expression*)parser_const_float(parser, (double)paramcount);
1450 /* overwrite fid, the function, with a call */
1451 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1453 if (fun->expression.vtype != TYPE_FUNCTION) {
1454 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
1458 if (!fun->expression.next) {
1459 parseerror(parser, "could not determine function return type");
1462 ast_value *fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1464 if (fun->expression.flags & AST_FLAG_DEPRECATED) {
1466 return !parsewarning(parser, WARN_DEPRECATED,
1467 "call to function (which is marked deprecated)\n",
1468 "-> it has been declared here: %s:%i",
1469 ast_ctx(fun).file, ast_ctx(fun).line);
1472 return !parsewarning(parser, WARN_DEPRECATED,
1473 "call to `%s` (which is marked deprecated)\n"
1474 "-> `%s` declared here: %s:%i",
1475 fval->name, fval->name, ast_ctx(fun).file, ast_ctx(fun).line);
1477 return !parsewarning(parser, WARN_DEPRECATED,
1478 "call to `%s` (deprecated: %s)\n"
1479 "-> `%s` declared here: %s:%i",
1480 fval->name, fval->desc, fval->name, ast_ctx(fun).file,
1484 if (vec_size(fun->expression.params) != paramcount &&
1485 !((fun->expression.flags & AST_FLAG_VARIADIC) &&
1486 vec_size(fun->expression.params) < paramcount))
1488 const char *fewmany = (vec_size(fun->expression.params) > paramcount) ? "few" : "many";
1490 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1491 "too %s parameters for call to %s: expected %i, got %i\n"
1492 " -> `%s` has been declared here: %s:%i",
1493 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1494 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1496 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1497 "too %s parameters for function call: expected %i, got %i\n"
1498 " -> it has been declared here: %s:%i",
1499 fewmany, (int)vec_size(fun->expression.params), (int)paramcount,
1500 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1507 static bool parser_close_paren(parser_t *parser, shunt *sy)
1509 if (!vec_size(sy->ops)) {
1510 parseerror(parser, "unmatched closing paren");
1514 while (vec_size(sy->ops)) {
1515 if (vec_last(sy->ops).isparen) {
1516 if (vec_last(sy->paren) == PAREN_FUNC) {
1518 if (!parser_close_call(parser, sy))
1522 if (vec_last(sy->paren) == PAREN_EXPR) {
1524 if (!vec_size(sy->out)) {
1525 compile_error(vec_last(sy->ops).ctx, "empty paren expression");
1526 vec_shrinkby(sy->ops, 1);
1529 vec_shrinkby(sy->ops, 1);
1532 if (vec_last(sy->paren) == PAREN_INDEX) {
1534 /* pop off the parenthesis */
1535 vec_shrinkby(sy->ops, 1);
1536 /* then apply the index operator */
1537 if (!parser_sy_apply_operator(parser, sy))
1541 if (vec_last(sy->paren) == PAREN_TERNARY1) {
1542 vec_last(sy->paren) = PAREN_TERNARY2;
1543 /* pop off the parenthesis */
1544 vec_shrinkby(sy->ops, 1);
1547 compile_error(vec_last(sy->ops).ctx, "invalid parenthesis");
1550 if (!parser_sy_apply_operator(parser, sy))
1556 static void parser_reclassify_token(parser_t *parser)
1559 for (i = 0; i < operator_count; ++i) {
1560 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1561 parser->tok = TOKEN_OPERATOR;
1567 static ast_expression* parse_vararg_do(parser_t *parser)
1569 ast_expression *idx, *out;
1571 ast_value *funtype = parser->function->vtype;
1573 lex_ctx ctx = parser_ctx(parser);
1575 if (!parser_next(parser) || parser->tok != '(') {
1576 parseerror(parser, "expected parameter index and type in parenthesis");
1579 if (!parser_next(parser)) {
1580 parseerror(parser, "error parsing parameter index");
1584 idx = parse_expression_leave(parser, true, false, false);
1588 if (parser->tok != ',') {
1590 parseerror(parser, "expected comma after parameter index");
1594 if (!parser_next(parser) || (parser->tok != TOKEN_IDENT && parser->tok != TOKEN_TYPENAME)) {
1596 parseerror(parser, "expected typename for vararg");
1600 typevar = parse_typename(parser, NULL, NULL);
1606 if (parser->tok != ')') {
1608 ast_delete(typevar);
1609 parseerror(parser, "expected closing paren");
1614 if (!parser_next(parser)) {
1616 ast_delete(typevar);
1617 parseerror(parser, "parse error after vararg");
1622 if (!parser->function->varargs) {
1624 ast_delete(typevar);
1625 parseerror(parser, "function has no variable argument list");
1629 if (funtype->expression.varparam &&
1630 !ast_compare_type((ast_expression*)typevar, (ast_expression*)funtype->expression.varparam))
1634 ast_type_to_string((ast_expression*)typevar, ty1, sizeof(ty1));
1635 ast_type_to_string((ast_expression*)funtype->expression.varparam, ty2, sizeof(ty2));
1636 compile_error(ast_ctx(typevar),
1637 "function was declared to take varargs of type `%s`, requested type is: %s",
1641 out = (ast_expression*)ast_array_index_new(ctx, (ast_expression*)(parser->function->varargs), idx);
1642 ast_type_adopt(out, typevar);
1643 ast_delete(typevar);
1647 static ast_expression* parse_vararg(parser_t *parser)
1649 bool old_noops = parser->lex->flags.noops;
1651 ast_expression *out;
1653 parser->lex->flags.noops = true;
1654 out = parse_vararg_do(parser);
1656 parser->lex->flags.noops = old_noops;
1660 static bool parse_sya_operand(parser_t *parser, shunt *sy, bool with_labels)
1662 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1663 parser->tok == TOKEN_IDENT &&
1664 !strcmp(parser_tokval(parser), "_"))
1666 /* a translatable string */
1669 parser->lex->flags.noops = true;
1670 if (!parser_next(parser) || parser->tok != '(') {
1671 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1674 parser->lex->flags.noops = false;
1675 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1676 parseerror(parser, "expected a constant string in translatable-string extension");
1679 val = parser_const_string(parser, parser_tokval(parser), true);
1682 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1684 if (!parser_next(parser) || parser->tok != ')') {
1685 parseerror(parser, "expected closing paren after translatable string");
1690 else if (parser->tok == TOKEN_DOTS)
1693 if (!OPTS_FLAG(VARIADIC_ARGS)) {
1694 parseerror(parser, "cannot access varargs (try -fvariadic-args)");
1697 va = parse_vararg(parser);
1700 vec_push(sy->out, syexp(parser_ctx(parser), va));
1703 else if (parser->tok == TOKEN_FLOATCONST) {
1705 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1708 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1711 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1713 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1716 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1719 else if (parser->tok == TOKEN_STRINGCONST) {
1721 val = parser_const_string(parser, parser_tokval(parser), false);
1724 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1727 else if (parser->tok == TOKEN_VECTORCONST) {
1729 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1732 vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
1735 else if (parser->tok == TOKEN_IDENT)
1737 const char *ctoken = parser_tokval(parser);
1738 ast_expression *prev = vec_size(sy->out) ? vec_last(sy->out).out : NULL;
1739 ast_expression *var;
1740 /* a_vector.{x,y,z} */
1741 if (!vec_size(sy->ops) ||
1742 !vec_last(sy->ops).etype ||
1743 operators[vec_last(sy->ops).etype-1].id != opid1('.') ||
1744 (prev >= intrinsic_debug_typestring &&
1745 prev <= intrinsic_debug_typestring))
1747 /* When adding more intrinsics, fix the above condition */
1750 if (prev && prev->expression.vtype == TYPE_VECTOR && ctoken[0] >= 'x' && ctoken[0] <= 'z' && !ctoken[1])
1752 var = (ast_expression*)parser->const_vec[ctoken[0]-'x'];
1754 var = parser_find_var(parser, parser_tokval(parser));
1756 var = parser_find_field(parser, parser_tokval(parser));
1758 if (!var && with_labels) {
1759 var = (ast_expression*)parser_find_label(parser, parser_tokval(parser));
1761 ast_label *lbl = ast_label_new(parser_ctx(parser), parser_tokval(parser), true);
1762 var = (ast_expression*)lbl;
1763 vec_push(parser->labels, lbl);
1768 if (!strcmp(parser_tokval(parser), "__builtin_debug_typestring")) {
1769 var = (ast_expression*)intrinsic_debug_typestring;
1773 char *correct = NULL;
1777 * sometimes people use preprocessing predefs without enabling them
1778 * i've done this thousands of times already myself. Lets check for
1779 * it in the predef table. And diagnose it better :)
1781 if (!OPTS_FLAG(FTEPP_PREDEFS)) {
1782 for (i = 0; i < sizeof(ftepp_predefs)/sizeof(*ftepp_predefs); i++) {
1783 if (!strcmp(ftepp_predefs[i].name, parser_tokval(parser))) {
1784 parseerror(parser, "unexpected ident: %s (use -fftepp-predef to enable pre-defined macros)", parser_tokval(parser));
1791 * TODO: determine the best score for the identifier: be it
1792 * a variable, a field.
1794 * We should also consider adding correction tables for
1795 * other things as well.
1797 if (opts.correction) {
1799 correct_init(&corr);
1801 for (i = 0; i < vec_size(parser->correct_variables); i++) {
1802 correct = correct_str(&corr, parser->correct_variables[i], parser_tokval(parser));
1803 if (strcmp(correct, parser_tokval(parser))) {
1805 } else if (correct) {
1810 correct_free(&corr);
1813 parseerror(parser, "unexpected ident: %s (did you mean %s?)", parser_tokval(parser), correct);
1818 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1824 if (ast_istype(var, ast_value)) {
1825 ((ast_value*)var)->uses++;
1827 else if (ast_istype(var, ast_member)) {
1828 ast_member *mem = (ast_member*)var;
1829 if (ast_istype(mem->owner, ast_value))
1830 ((ast_value*)(mem->owner))->uses++;
1833 vec_push(sy->out, syexp(parser_ctx(parser), var));
1836 parseerror(parser, "unexpected token `%s`", parser_tokval(parser));
1840 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels)
1842 ast_expression *expr = NULL;
1845 bool wantop = false;
1846 /* only warn once about an assignment in a truth value because the current code
1847 * would trigger twice on: if(a = b && ...), once for the if-truth-value, once for the && part
1849 bool warn_truthvalue = true;
1851 /* count the parens because an if starts with one, so the
1852 * end of a condition is an unmatched closing paren
1856 memset(&sy, 0, sizeof(sy));
1858 parser->lex->flags.noops = false;
1860 parser_reclassify_token(parser);
1864 if (parser->tok == TOKEN_TYPENAME) {
1865 parseerror(parser, "unexpected typename");
1869 if (parser->tok == TOKEN_OPERATOR)
1871 /* classify the operator */
1872 const oper_info *op;
1873 const oper_info *olast = NULL;
1875 for (o = 0; o < operator_count; ++o) {
1876 if (((!(operators[o].flags & OP_PREFIX) == !!wantop)) &&
1877 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1878 !strcmp(parser_tokval(parser), operators[o].op))
1883 if (o == operator_count) {
1884 /* no operator found... must be the end of the statement */
1887 /* found an operator */
1890 /* when declaring variables, a comma starts a new variable */
1891 if (op->id == opid1(',') && !vec_size(sy.paren) && stopatcomma) {
1892 /* fixup the token */
1897 /* a colon without a pervious question mark cannot be a ternary */
1898 if (!ternaries && op->id == opid2(':','?')) {
1903 if (op->id == opid1(',')) {
1904 if (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
1905 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
1909 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
1910 olast = &operators[vec_last(sy.ops).etype-1];
1912 #define IsAssignOp(x) (\
1913 (x) == opid1('=') || \
1914 (x) == opid2('+','=') || \
1915 (x) == opid2('-','=') || \
1916 (x) == opid2('*','=') || \
1917 (x) == opid2('/','=') || \
1918 (x) == opid2('%','=') || \
1919 (x) == opid2('&','=') || \
1920 (x) == opid2('|','=') || \
1921 (x) == opid3('&','~','=') \
1923 if (warn_truthvalue) {
1924 if ( (olast && IsAssignOp(olast->id) && (op->id == opid2('&','&') || op->id == opid2('|','|'))) ||
1925 (olast && IsAssignOp(op->id) && (olast->id == opid2('&','&') || olast->id == opid2('|','|'))) ||
1926 (truthvalue && !vec_size(sy.paren) && IsAssignOp(op->id))
1929 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around assignment used as truth value");
1930 warn_truthvalue = false;
1935 (op->prec < olast->prec) ||
1936 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1938 if (!parser_sy_apply_operator(parser, &sy))
1940 if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
1941 olast = &operators[vec_last(sy.ops).etype-1];
1946 if (op->id == opid1('(')) {
1948 size_t sycount = vec_size(sy.out);
1949 /* we expected an operator, this is the function-call operator */
1950 vec_push(sy.paren, PAREN_FUNC);
1951 vec_push(sy.ops, syparen(parser_ctx(parser), sycount-1));
1952 vec_push(sy.argc, 0);
1954 vec_push(sy.paren, PAREN_EXPR);
1955 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
1958 } else if (op->id == opid1('[')) {
1960 parseerror(parser, "unexpected array subscript");
1963 vec_push(sy.paren, PAREN_INDEX);
1964 /* push both the operator and the paren, this makes life easier */
1965 vec_push(sy.ops, syop(parser_ctx(parser), op));
1966 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
1968 } else if (op->id == opid2('?',':')) {
1969 vec_push(sy.ops, syop(parser_ctx(parser), op));
1970 vec_push(sy.ops, syparen(parser_ctx(parser), 0));
1973 vec_push(sy.paren, PAREN_TERNARY1);
1974 } else if (op->id == opid2(':','?')) {
1975 if (!vec_size(sy.paren)) {
1976 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1979 if (vec_last(sy.paren) != PAREN_TERNARY1) {
1980 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1983 if (!parser_close_paren(parser, &sy))
1985 vec_push(sy.ops, syop(parser_ctx(parser), op));
1989 vec_push(sy.ops, syop(parser_ctx(parser), op));
1990 wantop = !!(op->flags & OP_SUFFIX);
1993 else if (parser->tok == ')') {
1994 while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
1995 if (!parser_sy_apply_operator(parser, &sy))
1998 if (!vec_size(sy.paren))
2001 if (vec_last(sy.paren) == PAREN_TERNARY1) {
2002 parseerror(parser, "mismatched parentheses (closing paren in ternary expression?)");
2005 if (!parser_close_paren(parser, &sy))
2008 /* must be a function call without parameters */
2009 if (vec_last(sy.paren) != PAREN_FUNC) {
2010 parseerror(parser, "closing paren in invalid position");
2013 if (!parser_close_paren(parser, &sy))
2018 else if (parser->tok == '(') {
2019 parseerror(parser, "internal error: '(' should be classified as operator");
2022 else if (parser->tok == '[') {
2023 parseerror(parser, "internal error: '[' should be classified as operator");
2026 else if (parser->tok == ']') {
2027 while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
2028 if (!parser_sy_apply_operator(parser, &sy))
2031 if (!vec_size(sy.paren))
2033 if (vec_last(sy.paren) != PAREN_INDEX) {
2034 parseerror(parser, "mismatched parentheses, unexpected ']'");
2037 if (!parser_close_paren(parser, &sy))
2042 if (!parse_sya_operand(parser, &sy, with_labels))
2045 if (vec_size(sy.paren) && vec_last(sy.ops).isparen && vec_last(sy.paren) == PAREN_FUNC)
2046 vec_last(sy.argc)++;
2051 parseerror(parser, "expected operator or end of statement");
2055 if (!parser_next(parser)) {
2058 if (parser->tok == ';' ||
2059 ((!vec_size(sy.paren) || (vec_size(sy.paren) == 1 && vec_last(sy.paren) == PAREN_TERNARY2)) &&
2060 (parser->tok == ']' || parser->tok == ')' || parser->tok == '}')))
2066 while (vec_size(sy.ops)) {
2067 if (!parser_sy_apply_operator(parser, &sy))
2071 parser->lex->flags.noops = true;
2072 if (!vec_size(sy.out)) {
2073 parseerror(parser, "empty expression");
2076 expr = sy.out[0].out;
2079 if (vec_size(sy.paren)) {
2080 parseerror(parser, "internal error: vec_size(sy.paren) = %lu", (unsigned long)vec_size(sy.paren));
2088 parser->lex->flags.noops = true;
2089 for (i = 0; i < vec_size(sy.out); ++i) {
2091 ast_unref(sy.out[i].out);
2100 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels)
2102 ast_expression *e = parse_expression_leave(parser, stopatcomma, false, with_labels);
2105 if (parser->tok != ';') {
2106 parseerror(parser, "semicolon expected after expression");
2110 if (!parser_next(parser)) {
2117 static void parser_enterblock(parser_t *parser)
2119 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
2120 vec_push(parser->_blocklocals, vec_size(parser->_locals));
2121 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
2122 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
2123 vec_push(parser->_block_ctx, parser_ctx(parser));
2126 vec_push(parser->correct_variables, correct_trie_new());
2127 vec_push(parser->correct_variables_score, NULL);
2130 static bool parser_leaveblock(parser_t *parser)
2133 size_t locals, typedefs;
2135 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
2136 parseerror(parser, "internal error: parser_leaveblock with no block");
2140 util_htdel(vec_last(parser->variables));
2141 correct_del(vec_last(parser->correct_variables), vec_last(parser->correct_variables_score));
2143 vec_pop(parser->variables);
2144 vec_pop(parser->correct_variables);
2145 vec_pop(parser->correct_variables_score);
2146 if (!vec_size(parser->_blocklocals)) {
2147 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
2151 locals = vec_last(parser->_blocklocals);
2152 vec_pop(parser->_blocklocals);
2153 while (vec_size(parser->_locals) != locals) {
2154 ast_expression *e = vec_last(parser->_locals);
2155 ast_value *v = (ast_value*)e;
2156 vec_pop(parser->_locals);
2157 if (ast_istype(e, ast_value) && !v->uses) {
2158 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name))
2163 typedefs = vec_last(parser->_blocktypedefs);
2164 while (vec_size(parser->_typedefs) != typedefs) {
2165 ast_delete(vec_last(parser->_typedefs));
2166 vec_pop(parser->_typedefs);
2168 util_htdel(vec_last(parser->typedefs));
2169 vec_pop(parser->typedefs);
2171 vec_pop(parser->_block_ctx);
2176 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
2178 vec_push(parser->_locals, e);
2179 util_htset(vec_last(parser->variables), name, (void*)e);
2183 vec_last(parser->correct_variables),
2184 &vec_last(parser->correct_variables_score),
2189 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e)
2191 vec_push(parser->globals, e);
2192 util_htset(parser->htglobals, name, e);
2196 parser->correct_variables[0],
2197 &parser->correct_variables_score[0],
2202 static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
2206 ast_expression *prev;
2208 if (cond->expression.vtype == TYPE_VOID || cond->expression.vtype >= TYPE_VARIANT) {
2210 ast_type_to_string(cond, ty, sizeof(ty));
2211 compile_error(ast_ctx(cond), "invalid type for if() condition: %s", ty);
2214 if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->expression.vtype == TYPE_STRING)
2217 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
2220 parseerror(parser, "internal error: failed to process condition");
2225 else if (OPTS_FLAG(CORRECT_LOGIC) && cond->expression.vtype == TYPE_VECTOR)
2227 /* vector types need to be cast to true booleans */
2228 ast_binary *bin = (ast_binary*)cond;
2229 if (!OPTS_FLAG(PERL_LOGIC) || !ast_istype(cond, ast_binary) || !(bin->op == INSTR_AND || bin->op == INSTR_OR))
2231 /* in perl-logic, AND and OR take care of the -fcorrect-logic */
2233 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_V, cond);
2236 parseerror(parser, "internal error: failed to process condition");
2243 unary = (ast_unary*)cond;
2244 while (ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F)
2246 cond = unary->operand;
2247 unary->operand = NULL;
2250 unary = (ast_unary*)cond;
2254 parseerror(parser, "internal error: failed to process condition");
2256 if (ifnot) *_ifnot = !*_ifnot;
2260 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
2263 ast_expression *cond, *ontrue = NULL, *onfalse = NULL;
2266 lex_ctx ctx = parser_ctx(parser);
2268 (void)block; /* not touching */
2270 /* skip the 'if', parse an optional 'not' and check for an opening paren */
2271 if (!parser_next(parser)) {
2272 parseerror(parser, "expected condition or 'not'");
2275 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
2277 if (!parser_next(parser)) {
2278 parseerror(parser, "expected condition in parenthesis");
2282 if (parser->tok != '(') {
2283 parseerror(parser, "expected 'if' condition in parenthesis");
2286 /* parse into the expression */
2287 if (!parser_next(parser)) {
2288 parseerror(parser, "expected 'if' condition after opening paren");
2291 /* parse the condition */
2292 cond = parse_expression_leave(parser, false, true, false);
2296 if (parser->tok != ')') {
2297 parseerror(parser, "expected closing paren after 'if' condition");
2301 /* parse into the 'then' branch */
2302 if (!parser_next(parser)) {
2303 parseerror(parser, "expected statement for on-true branch of 'if'");
2307 if (!parse_statement_or_block(parser, &ontrue)) {
2312 ontrue = (ast_expression*)ast_block_new(parser_ctx(parser));
2313 /* check for an else */
2314 if (!strcmp(parser_tokval(parser), "else")) {
2315 /* parse into the 'else' branch */
2316 if (!parser_next(parser)) {
2317 parseerror(parser, "expected on-false branch after 'else'");
2322 if (!parse_statement_or_block(parser, &onfalse)) {
2329 cond = process_condition(parser, cond, &ifnot);
2331 if (ontrue) ast_delete(ontrue);
2332 if (onfalse) ast_delete(onfalse);
2337 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
2339 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
2340 *out = (ast_expression*)ifthen;
2344 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out);
2345 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
2350 /* skip the 'while' and get the body */
2351 if (!parser_next(parser)) {
2352 if (OPTS_FLAG(LOOP_LABELS))
2353 parseerror(parser, "expected loop label or 'while' condition in parenthesis");
2355 parseerror(parser, "expected 'while' condition in parenthesis");
2359 if (parser->tok == ':') {
2360 if (!OPTS_FLAG(LOOP_LABELS))
2361 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2362 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2363 parseerror(parser, "expected loop label");
2366 label = util_strdup(parser_tokval(parser));
2367 if (!parser_next(parser)) {
2369 parseerror(parser, "expected 'while' condition in parenthesis");
2374 if (parser->tok != '(') {
2375 parseerror(parser, "expected 'while' condition in parenthesis");
2379 vec_push(parser->breaks, label);
2380 vec_push(parser->continues, label);
2382 rv = parse_while_go(parser, block, out);
2385 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2386 parseerror(parser, "internal error: label stack corrupted");
2392 vec_pop(parser->breaks);
2393 vec_pop(parser->continues);
2398 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out)
2401 ast_expression *cond, *ontrue;
2405 lex_ctx ctx = parser_ctx(parser);
2407 (void)block; /* not touching */
2409 /* parse into the expression */
2410 if (!parser_next(parser)) {
2411 parseerror(parser, "expected 'while' condition after opening paren");
2414 /* parse the condition */
2415 cond = parse_expression_leave(parser, false, true, false);
2419 if (parser->tok != ')') {
2420 parseerror(parser, "expected closing paren after 'while' condition");
2424 /* parse into the 'then' branch */
2425 if (!parser_next(parser)) {
2426 parseerror(parser, "expected while-loop body");
2430 if (!parse_statement_or_block(parser, &ontrue)) {
2435 cond = process_condition(parser, cond, &ifnot);
2440 aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue);
2441 *out = (ast_expression*)aloop;
2445 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out);
2446 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2451 /* skip the 'do' and get the body */
2452 if (!parser_next(parser)) {
2453 if (OPTS_FLAG(LOOP_LABELS))
2454 parseerror(parser, "expected loop label or body");
2456 parseerror(parser, "expected loop body");
2460 if (parser->tok == ':') {
2461 if (!OPTS_FLAG(LOOP_LABELS))
2462 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2463 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2464 parseerror(parser, "expected loop label");
2467 label = util_strdup(parser_tokval(parser));
2468 if (!parser_next(parser)) {
2470 parseerror(parser, "expected loop body");
2475 vec_push(parser->breaks, label);
2476 vec_push(parser->continues, label);
2478 rv = parse_dowhile_go(parser, block, out);
2481 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2482 parseerror(parser, "internal error: label stack corrupted");
2488 vec_pop(parser->breaks);
2489 vec_pop(parser->continues);
2494 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out)
2497 ast_expression *cond, *ontrue;
2501 lex_ctx ctx = parser_ctx(parser);
2503 (void)block; /* not touching */
2505 if (!parse_statement_or_block(parser, &ontrue))
2508 /* expect the "while" */
2509 if (parser->tok != TOKEN_KEYWORD ||
2510 strcmp(parser_tokval(parser), "while"))
2512 parseerror(parser, "expected 'while' and condition");
2517 /* skip the 'while' and check for opening paren */
2518 if (!parser_next(parser) || parser->tok != '(') {
2519 parseerror(parser, "expected 'while' condition in parenthesis");
2523 /* parse into the expression */
2524 if (!parser_next(parser)) {
2525 parseerror(parser, "expected 'while' condition after opening paren");
2529 /* parse the condition */
2530 cond = parse_expression_leave(parser, false, true, false);
2534 if (parser->tok != ')') {
2535 parseerror(parser, "expected closing paren after 'while' condition");
2541 if (!parser_next(parser) || parser->tok != ';') {
2542 parseerror(parser, "expected semicolon after condition");
2548 if (!parser_next(parser)) {
2549 parseerror(parser, "parse error");
2555 cond = process_condition(parser, cond, &ifnot);
2560 aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue);
2561 *out = (ast_expression*)aloop;
2565 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out);
2566 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2571 /* skip the 'for' and check for opening paren */
2572 if (!parser_next(parser)) {
2573 if (OPTS_FLAG(LOOP_LABELS))
2574 parseerror(parser, "expected loop label or 'for' expressions in parenthesis");
2576 parseerror(parser, "expected 'for' expressions in parenthesis");
2580 if (parser->tok == ':') {
2581 if (!OPTS_FLAG(LOOP_LABELS))
2582 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2583 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2584 parseerror(parser, "expected loop label");
2587 label = util_strdup(parser_tokval(parser));
2588 if (!parser_next(parser)) {
2590 parseerror(parser, "expected 'for' expressions in parenthesis");
2595 if (parser->tok != '(') {
2596 parseerror(parser, "expected 'for' expressions in parenthesis");
2600 vec_push(parser->breaks, label);
2601 vec_push(parser->continues, label);
2603 rv = parse_for_go(parser, block, out);
2606 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2607 parseerror(parser, "internal error: label stack corrupted");
2613 vec_pop(parser->breaks);
2614 vec_pop(parser->continues);
2618 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out)
2621 ast_expression *initexpr, *cond, *increment, *ontrue;
2627 lex_ctx ctx = parser_ctx(parser);
2629 parser_enterblock(parser);
2636 /* parse into the expression */
2637 if (!parser_next(parser)) {
2638 parseerror(parser, "expected 'for' initializer after opening paren");
2643 if (parser->tok == TOKEN_IDENT)
2644 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2646 if (typevar || parser->tok == TOKEN_TYPENAME) {
2648 if (opts.standard != COMPILER_GMQCC) {
2649 if (parsewarning(parser, WARN_EXTENSIONS,
2650 "current standard does not allow variable declarations in for-loop initializers"))
2654 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false, 0, NULL))
2657 else if (parser->tok != ';')
2659 initexpr = parse_expression_leave(parser, false, false, false);
2664 /* move on to condition */
2665 if (parser->tok != ';') {
2666 parseerror(parser, "expected semicolon after for-loop initializer");
2669 if (!parser_next(parser)) {
2670 parseerror(parser, "expected for-loop condition");
2674 /* parse the condition */
2675 if (parser->tok != ';') {
2676 cond = parse_expression_leave(parser, false, true, false);
2681 /* move on to incrementor */
2682 if (parser->tok != ';') {
2683 parseerror(parser, "expected semicolon after for-loop initializer");
2686 if (!parser_next(parser)) {
2687 parseerror(parser, "expected for-loop condition");
2691 /* parse the incrementor */
2692 if (parser->tok != ')') {
2693 increment = parse_expression_leave(parser, false, false, false);
2696 if (!ast_side_effects(increment)) {
2697 if (genwarning(ast_ctx(increment), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2703 if (parser->tok != ')') {
2704 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2707 /* parse into the 'then' branch */
2708 if (!parser_next(parser)) {
2709 parseerror(parser, "expected for-loop body");
2712 if (!parse_statement_or_block(parser, &ontrue))
2716 cond = process_condition(parser, cond, &ifnot);
2720 aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue);
2721 *out = (ast_expression*)aloop;
2723 if (!parser_leaveblock(parser))
2727 if (initexpr) ast_delete(initexpr);
2728 if (cond) ast_delete(cond);
2729 if (increment) ast_delete(increment);
2730 (void)!parser_leaveblock(parser);
2734 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2736 ast_expression *exp = NULL;
2737 ast_return *ret = NULL;
2738 ast_value *expected = parser->function->vtype;
2740 lex_ctx ctx = parser_ctx(parser);
2742 (void)block; /* not touching */
2744 if (!parser_next(parser)) {
2745 parseerror(parser, "expected return expression");
2749 if (parser->tok != ';') {
2750 exp = parse_expression(parser, false, false);
2754 if (exp->expression.vtype != TYPE_NIL &&
2755 exp->expression.vtype != expected->expression.next->expression.vtype)
2757 parseerror(parser, "return with invalid expression");
2760 ret = ast_return_new(ctx, exp);
2766 if (!parser_next(parser))
2767 parseerror(parser, "parse error");
2768 if (expected->expression.next->expression.vtype != TYPE_VOID) {
2769 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2771 ret = ast_return_new(ctx, NULL);
2773 *out = (ast_expression*)ret;
2777 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2780 unsigned int levels = 0;
2781 lex_ctx ctx = parser_ctx(parser);
2782 const char **loops = (is_continue ? parser->continues : parser->breaks);
2784 (void)block; /* not touching */
2785 if (!parser_next(parser)) {
2786 parseerror(parser, "expected semicolon or loop label");
2790 if (!vec_size(loops)) {
2792 parseerror(parser, "`continue` can only be used inside loops");
2794 parseerror(parser, "`break` can only be used inside loops or switches");
2797 if (parser->tok == TOKEN_IDENT) {
2798 if (!OPTS_FLAG(LOOP_LABELS))
2799 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2800 i = vec_size(loops);
2802 if (loops[i] && !strcmp(loops[i], parser_tokval(parser)))
2805 parseerror(parser, "no such loop to %s: `%s`",
2806 (is_continue ? "continue" : "break out of"),
2807 parser_tokval(parser));
2812 if (!parser_next(parser)) {
2813 parseerror(parser, "expected semicolon");
2818 if (parser->tok != ';') {
2819 parseerror(parser, "expected semicolon");
2823 if (!parser_next(parser))
2824 parseerror(parser, "parse error");
2826 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue, levels);
2830 /* returns true when it was a variable qualifier, false otherwise!
2831 * on error, cvq is set to CV_WRONG
2833 static bool parse_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *is_static, uint32_t *_flags, char **message)
2835 bool had_const = false;
2836 bool had_var = false;
2837 bool had_noref = false;
2838 bool had_attrib = false;
2839 bool had_static = false;
2844 if (parser->tok == TOKEN_ATTRIBUTE_OPEN) {
2846 /* parse an attribute */
2847 if (!parser_next(parser)) {
2848 parseerror(parser, "expected attribute after `[[`");
2852 if (!strcmp(parser_tokval(parser), "noreturn")) {
2853 flags |= AST_FLAG_NORETURN;
2854 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2855 parseerror(parser, "`noreturn` attribute has no parameters, expected `]]`");
2860 else if (!strcmp(parser_tokval(parser), "noref")) {
2862 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2863 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2868 else if (!strcmp(parser_tokval(parser), "inline")) {
2869 flags |= AST_FLAG_INLINE;
2870 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2871 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2878 else if (!strcmp(parser_tokval(parser), "deprecated") && !(flags & AST_FLAG_DEPRECATED)) {
2879 flags |= AST_FLAG_DEPRECATED;
2882 if (!parser_next(parser)) {
2883 parseerror(parser, "parse error in attribute");
2887 if (parser->tok == '(') {
2888 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
2889 parseerror(parser, "`deprecated` attribute missing parameter");
2893 *message = util_strdup(parser_tokval(parser));
2895 if (!parser_next(parser)) {
2896 parseerror(parser, "parse error in attribute");
2900 if(parser->tok != ')') {
2901 parseerror(parser, "`deprecated` attribute expected `)` after parameter");
2905 if (!parser_next(parser)) {
2906 parseerror(parser, "parse error in attribute");
2911 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2912 parseerror(parser, "`deprecated` attribute expected `]]`");
2915 if (*message) mem_d(*message);
2923 /* Skip tokens until we hit a ]] */
2924 (void)!parsewarning(parser, WARN_UNKNOWN_ATTRIBUTE, "unknown attribute starting with `%s`", parser_tokval(parser));
2925 while (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2926 if (!parser_next(parser)) {
2927 parseerror(parser, "error inside attribute");
2934 else if (with_local && !strcmp(parser_tokval(parser), "static"))
2936 else if (!strcmp(parser_tokval(parser), "const"))
2938 else if (!strcmp(parser_tokval(parser), "var"))
2940 else if (with_local && !strcmp(parser_tokval(parser), "local"))
2942 else if (!strcmp(parser_tokval(parser), "noref"))
2944 else if (!had_const && !had_var && !had_noref && !had_attrib && !had_static && !flags) {
2949 if (!parser_next(parser))
2959 *is_static = had_static;
2963 parseerror(parser, "parse error after variable qualifier");
2968 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out);
2969 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
2974 /* skip the 'while' and get the body */
2975 if (!parser_next(parser)) {
2976 if (OPTS_FLAG(LOOP_LABELS))
2977 parseerror(parser, "expected loop label or 'switch' operand in parenthesis");
2979 parseerror(parser, "expected 'switch' operand in parenthesis");
2983 if (parser->tok == ':') {
2984 if (!OPTS_FLAG(LOOP_LABELS))
2985 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2986 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2987 parseerror(parser, "expected loop label");
2990 label = util_strdup(parser_tokval(parser));
2991 if (!parser_next(parser)) {
2993 parseerror(parser, "expected 'switch' operand in parenthesis");
2998 if (parser->tok != '(') {
2999 parseerror(parser, "expected 'switch' operand in parenthesis");
3003 vec_push(parser->breaks, label);
3005 rv = parse_switch_go(parser, block, out);
3008 if (vec_last(parser->breaks) != label) {
3009 parseerror(parser, "internal error: label stack corrupted");
3015 vec_pop(parser->breaks);
3020 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out)
3022 ast_expression *operand;
3025 ast_switch *switchnode;
3026 ast_switch_case swcase;
3029 bool noref, is_static;
3030 uint32_t qflags = 0;
3032 lex_ctx ctx = parser_ctx(parser);
3034 (void)block; /* not touching */
3037 /* parse into the expression */
3038 if (!parser_next(parser)) {
3039 parseerror(parser, "expected switch operand");
3042 /* parse the operand */
3043 operand = parse_expression_leave(parser, false, false, false);
3047 switchnode = ast_switch_new(ctx, operand);
3050 if (parser->tok != ')') {
3051 ast_delete(switchnode);
3052 parseerror(parser, "expected closing paren after 'switch' operand");
3056 /* parse over the opening paren */
3057 if (!parser_next(parser) || parser->tok != '{') {
3058 ast_delete(switchnode);
3059 parseerror(parser, "expected list of cases");
3063 if (!parser_next(parser)) {
3064 ast_delete(switchnode);
3065 parseerror(parser, "expected 'case' or 'default'");
3069 /* new block; allow some variables to be declared here */
3070 parser_enterblock(parser);
3073 if (parser->tok == TOKEN_IDENT)
3074 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3075 if (typevar || parser->tok == TOKEN_TYPENAME) {
3076 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL)) {
3077 ast_delete(switchnode);
3082 if (parse_qualifiers(parser, true, &cvq, &noref, &is_static, &qflags, NULL))
3084 if (cvq == CV_WRONG) {
3085 ast_delete(switchnode);
3088 if (!parse_variable(parser, block, false, cvq, NULL, noref, is_static, qflags, NULL)) {
3089 ast_delete(switchnode);
3098 while (parser->tok != '}') {
3099 ast_block *caseblock;
3101 if (!strcmp(parser_tokval(parser), "case")) {
3102 if (!parser_next(parser)) {
3103 ast_delete(switchnode);
3104 parseerror(parser, "expected expression for case");
3107 swcase.value = parse_expression_leave(parser, false, false, false);
3108 if (!swcase.value) {
3109 ast_delete(switchnode);
3110 parseerror(parser, "expected expression for case");
3113 if (!OPTS_FLAG(RELAXED_SWITCH)) {
3114 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
3115 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
3121 else if (!strcmp(parser_tokval(parser), "default")) {
3122 swcase.value = NULL;
3123 if (!parser_next(parser)) {
3124 ast_delete(switchnode);
3125 parseerror(parser, "expected colon");
3130 ast_delete(switchnode);
3131 parseerror(parser, "expected 'case' or 'default'");
3135 /* Now the colon and body */
3136 if (parser->tok != ':') {
3137 if (swcase.value) ast_unref(swcase.value);
3138 ast_delete(switchnode);
3139 parseerror(parser, "expected colon");
3143 if (!parser_next(parser)) {
3144 if (swcase.value) ast_unref(swcase.value);
3145 ast_delete(switchnode);
3146 parseerror(parser, "expected statements or case");
3149 caseblock = ast_block_new(parser_ctx(parser));
3151 if (swcase.value) ast_unref(swcase.value);
3152 ast_delete(switchnode);
3155 swcase.code = (ast_expression*)caseblock;
3156 vec_push(switchnode->cases, swcase);
3158 ast_expression *expr;
3159 if (parser->tok == '}')
3161 if (parser->tok == TOKEN_KEYWORD) {
3162 if (!strcmp(parser_tokval(parser), "case") ||
3163 !strcmp(parser_tokval(parser), "default"))
3168 if (!parse_statement(parser, caseblock, &expr, true)) {
3169 ast_delete(switchnode);
3174 if (!ast_block_add_expr(caseblock, expr)) {
3175 ast_delete(switchnode);
3181 parser_leaveblock(parser);
3184 if (parser->tok != '}') {
3185 ast_delete(switchnode);
3186 parseerror(parser, "expected closing paren of case list");
3189 if (!parser_next(parser)) {
3190 ast_delete(switchnode);
3191 parseerror(parser, "parse error after switch");
3194 *out = (ast_expression*)switchnode;
3198 /* parse computed goto sides */
3199 static ast_expression *parse_goto_computed(parser_t *parser, ast_expression **side) {
3200 ast_expression *on_true;
3201 ast_expression *on_false;
3202 ast_expression *cond;
3207 if (ast_istype(*side, ast_ternary)) {
3208 ast_ternary *tern = (ast_ternary*)*side;
3209 on_true = parse_goto_computed(parser, &tern->on_true);
3210 on_false = parse_goto_computed(parser, &tern->on_false);
3212 if (!on_true || !on_false) {
3213 parseerror(parser, "expected label or expression in ternary");
3214 if (on_true) ast_unref(on_true);
3215 if (on_false) ast_unref(on_false);
3223 return (ast_expression*)ast_ifthen_new(parser_ctx(parser), cond, on_true, on_false);
3224 } else if (ast_istype(*side, ast_label)) {
3225 ast_goto *gt = ast_goto_new(parser_ctx(parser), ((ast_label*)*side)->name);
3226 ast_goto_set_label(gt, ((ast_label*)*side));
3228 return (ast_expression*)gt;
3233 static bool parse_goto(parser_t *parser, ast_expression **out)
3235 ast_goto *gt = NULL;
3236 ast_expression *lbl;
3238 if (!parser_next(parser))
3241 if (parser->tok != TOKEN_IDENT) {
3242 ast_expression *expression;
3244 /* could be an expression i.e computed goto :-) */
3245 if (parser->tok != '(') {
3246 parseerror(parser, "expected label name after `goto`");
3250 /* failed to parse expression for goto */
3251 if (!(expression = parse_expression(parser, false, true)) ||
3252 !(*out = parse_goto_computed(parser, &expression))) {
3253 parseerror(parser, "invalid goto expression");
3254 ast_unref(expression);
3261 /* not computed goto */
3262 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
3263 lbl = parser_find_label(parser, gt->name);
3265 if (!ast_istype(lbl, ast_label)) {
3266 parseerror(parser, "internal error: label is not an ast_label");
3270 ast_goto_set_label(gt, (ast_label*)lbl);
3273 vec_push(parser->gotos, gt);
3275 if (!parser_next(parser) || parser->tok != ';') {
3276 parseerror(parser, "semicolon expected after goto label");
3279 if (!parser_next(parser)) {
3280 parseerror(parser, "parse error after goto");
3284 *out = (ast_expression*)gt;
3288 static bool parse_skipwhite(parser_t *parser)
3291 if (!parser_next(parser))
3293 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
3294 return parser->tok < TOKEN_ERROR;
3297 static bool parse_eol(parser_t *parser)
3299 if (!parse_skipwhite(parser))
3301 return parser->tok == TOKEN_EOL;
3304 static bool parse_pragma_do(parser_t *parser)
3306 if (!parser_next(parser) ||
3307 parser->tok != TOKEN_IDENT ||
3308 strcmp(parser_tokval(parser), "pragma"))
3310 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
3313 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
3314 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
3318 if (!strcmp(parser_tokval(parser), "noref")) {
3319 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
3320 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
3323 parser->noref = !!parser_token(parser)->constval.i;
3324 if (!parse_eol(parser)) {
3325 parseerror(parser, "parse error after `noref` pragma");
3331 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
3338 static bool parse_pragma(parser_t *parser)
3341 parser->lex->flags.preprocessing = true;
3342 parser->lex->flags.mergelines = true;
3343 rv = parse_pragma_do(parser);
3344 if (parser->tok != TOKEN_EOL) {
3345 parseerror(parser, "junk after pragma");
3348 parser->lex->flags.preprocessing = false;
3349 parser->lex->flags.mergelines = false;
3350 if (!parser_next(parser)) {
3351 parseerror(parser, "parse error after pragma");
3357 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
3359 bool noref, is_static;
3361 uint32_t qflags = 0;
3362 ast_value *typevar = NULL;
3363 char *vstring = NULL;
3367 if (parser->tok == TOKEN_IDENT)
3368 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3370 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
3372 /* local variable */
3374 parseerror(parser, "cannot declare a variable from here");
3377 if (opts.standard == COMPILER_QCC) {
3378 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
3381 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL))
3385 else if (parse_qualifiers(parser, !!block, &cvq, &noref, &is_static, &qflags, &vstring))
3387 if (cvq == CV_WRONG)
3389 return parse_variable(parser, block, true, cvq, NULL, noref, is_static, qflags, vstring);
3391 else if (parser->tok == TOKEN_KEYWORD)
3393 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
3398 if (!parser_next(parser)) {
3399 parseerror(parser, "parse error after __builtin_debug_printtype");
3403 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
3405 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
3406 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
3407 if (!parser_next(parser)) {
3408 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
3414 if (!parse_statement(parser, block, out, allow_cases))
3417 con_out("__builtin_debug_printtype: got no output node\n");
3420 ast_type_to_string(*out, ty, sizeof(ty));
3421 con_out("__builtin_debug_printtype: `%s`\n", ty);
3426 else if (!strcmp(parser_tokval(parser), "return"))
3428 return parse_return(parser, block, out);
3430 else if (!strcmp(parser_tokval(parser), "if"))
3432 return parse_if(parser, block, out);
3434 else if (!strcmp(parser_tokval(parser), "while"))
3436 return parse_while(parser, block, out);
3438 else if (!strcmp(parser_tokval(parser), "do"))
3440 return parse_dowhile(parser, block, out);
3442 else if (!strcmp(parser_tokval(parser), "for"))
3444 if (opts.standard == COMPILER_QCC) {
3445 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
3448 return parse_for(parser, block, out);
3450 else if (!strcmp(parser_tokval(parser), "break"))
3452 return parse_break_continue(parser, block, out, false);
3454 else if (!strcmp(parser_tokval(parser), "continue"))
3456 return parse_break_continue(parser, block, out, true);
3458 else if (!strcmp(parser_tokval(parser), "switch"))
3460 return parse_switch(parser, block, out);
3462 else if (!strcmp(parser_tokval(parser), "case") ||
3463 !strcmp(parser_tokval(parser), "default"))
3466 parseerror(parser, "unexpected 'case' label");
3471 else if (!strcmp(parser_tokval(parser), "goto"))
3473 return parse_goto(parser, out);
3475 else if (!strcmp(parser_tokval(parser), "typedef"))
3477 if (!parser_next(parser)) {
3478 parseerror(parser, "expected type definition after 'typedef'");
3481 return parse_typedef(parser);
3483 parseerror(parser, "Unexpected keyword");
3486 else if (parser->tok == '{')
3489 inner = parse_block(parser);
3492 *out = (ast_expression*)inner;
3495 else if (parser->tok == ':')
3499 if (!parser_next(parser)) {
3500 parseerror(parser, "expected label name");
3503 if (parser->tok != TOKEN_IDENT) {
3504 parseerror(parser, "label must be an identifier");
3507 label = (ast_label*)parser_find_label(parser, parser_tokval(parser));
3509 if (!label->undefined) {
3510 parseerror(parser, "label `%s` already defined", label->name);
3513 label->undefined = false;
3516 label = ast_label_new(parser_ctx(parser), parser_tokval(parser), false);
3517 vec_push(parser->labels, label);
3519 *out = (ast_expression*)label;
3520 if (!parser_next(parser)) {
3521 parseerror(parser, "parse error after label");
3524 for (i = 0; i < vec_size(parser->gotos); ++i) {
3525 if (!strcmp(parser->gotos[i]->name, label->name)) {
3526 ast_goto_set_label(parser->gotos[i], label);
3527 vec_remove(parser->gotos, i, 1);
3533 else if (parser->tok == ';')
3535 if (!parser_next(parser)) {
3536 parseerror(parser, "parse error after empty statement");
3543 ast_expression *exp = parse_expression(parser, false, false);
3547 if (!ast_side_effects(exp)) {
3548 if (genwarning(ast_ctx(exp), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
3555 static bool parse_enum(parser_t *parser)
3558 ast_value **values = NULL;
3559 ast_value *var = NULL;
3562 ast_expression *old;
3564 if (!parser_next(parser) || parser->tok != '{') {
3565 parseerror(parser, "expected `{` after `enum` keyword");
3570 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
3571 if (parser->tok == '}') {
3572 /* allow an empty enum */
3575 parseerror(parser, "expected identifier or `}`");
3579 old = parser_find_field(parser, parser_tokval(parser));
3581 old = parser_find_global(parser, parser_tokval(parser));
3583 parseerror(parser, "value `%s` has already been declared here: %s:%i",
3584 parser_tokval(parser), ast_ctx(old).file, ast_ctx(old).line);
3588 var = ast_value_new(parser_ctx(parser), parser_tokval(parser), TYPE_FLOAT);
3589 vec_push(values, var);
3590 var->cvq = CV_CONST;
3591 var->hasvalue = true;
3592 var->constval.vfloat = num++;
3594 parser_addglobal(parser, var->name, (ast_expression*)var);
3596 if (!parser_next(parser)) {
3597 parseerror(parser, "expected `=`, `}` or comma after identifier");
3601 if (parser->tok == ',')
3603 if (parser->tok == '}')
3605 if (parser->tok != '=') {
3606 parseerror(parser, "expected `=`, `}` or comma after identifier");
3610 if (!parser_next(parser)) {
3611 parseerror(parser, "expected expression after `=`");
3615 /* We got a value! */
3616 old = parse_expression_leave(parser, true, false, false);
3617 asvalue = (ast_value*)old;
3618 if (!ast_istype(old, ast_value) || asvalue->cvq != CV_CONST || !asvalue->hasvalue) {
3619 compile_error(ast_ctx(var), "constant value or expression expected");
3622 num = (var->constval.vfloat = asvalue->constval.vfloat) + 1;
3624 if (parser->tok == '}')
3626 if (parser->tok != ',') {
3627 parseerror(parser, "expected `}` or comma after expression");
3632 if (parser->tok != '}') {
3633 parseerror(parser, "internal error: breaking without `}`");
3637 if (!parser_next(parser) || parser->tok != ';') {
3638 parseerror(parser, "expected semicolon after enumeration");
3642 if (!parser_next(parser)) {
3643 parseerror(parser, "parse error after enumeration");
3655 static bool parse_block_into(parser_t *parser, ast_block *block)
3659 parser_enterblock(parser);
3661 if (!parser_next(parser)) { /* skip the '{' */
3662 parseerror(parser, "expected function body");
3666 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
3668 ast_expression *expr = NULL;
3669 if (parser->tok == '}')
3672 if (!parse_statement(parser, block, &expr, false)) {
3673 /* parseerror(parser, "parse error"); */
3679 if (!ast_block_add_expr(block, expr)) {
3686 if (parser->tok != '}') {
3689 (void)parser_next(parser);
3693 if (!parser_leaveblock(parser))
3695 return retval && !!block;
3698 static ast_block* parse_block(parser_t *parser)
3701 block = ast_block_new(parser_ctx(parser));
3704 if (!parse_block_into(parser, block)) {
3705 ast_block_delete(block);
3711 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
3713 if (parser->tok == '{') {
3714 *out = (ast_expression*)parse_block(parser);
3717 return parse_statement(parser, NULL, out, false);
3720 static bool create_vector_members(ast_value *var, ast_member **me)
3723 size_t len = strlen(var->name);
3725 for (i = 0; i < 3; ++i) {
3726 char *name = (char*)mem_a(len+3);
3727 memcpy(name, var->name, len);
3729 name[len+1] = 'x'+i;
3731 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
3740 do { ast_member_delete(me[--i]); } while(i);
3744 static bool parse_function_body(parser_t *parser, ast_value *var)
3746 ast_block *block = NULL;
3751 ast_expression *framenum = NULL;
3752 ast_expression *nextthink = NULL;
3753 /* None of the following have to be deleted */
3754 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
3755 ast_expression *gbl_time = NULL, *gbl_self = NULL;
3756 bool has_frame_think;
3760 has_frame_think = false;
3761 old = parser->function;
3763 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
3764 parseerror(parser, "gotos/labels leaking");
3768 if (!OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
3769 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
3770 "variadic function with implementation will not be able to access additional parameters (try -fvariadic-args)"))
3776 if (parser->tok == '[') {
3777 /* got a frame definition: [ framenum, nextthink ]
3778 * this translates to:
3779 * self.frame = framenum;
3780 * self.nextthink = time + 0.1;
3781 * self.think = nextthink;
3785 fld_think = parser_find_field(parser, "think");
3786 fld_nextthink = parser_find_field(parser, "nextthink");
3787 fld_frame = parser_find_field(parser, "frame");
3788 if (!fld_think || !fld_nextthink || !fld_frame) {
3789 parseerror(parser, "cannot use [frame,think] notation without the required fields");
3790 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
3793 gbl_time = parser_find_global(parser, "time");
3794 gbl_self = parser_find_global(parser, "self");
3795 if (!gbl_time || !gbl_self) {
3796 parseerror(parser, "cannot use [frame,think] notation without the required globals");
3797 parseerror(parser, "please declare the following globals: `time`, `self`");
3801 if (!parser_next(parser))
3804 framenum = parse_expression_leave(parser, true, false, false);
3806 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
3809 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
3810 ast_unref(framenum);
3811 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
3815 if (parser->tok != ',') {
3816 ast_unref(framenum);
3817 parseerror(parser, "expected comma after frame number in [frame,think] notation");
3818 parseerror(parser, "Got a %i\n", parser->tok);
3822 if (!parser_next(parser)) {
3823 ast_unref(framenum);
3827 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
3829 /* qc allows the use of not-yet-declared functions here
3830 * - this automatically creates a prototype */
3831 ast_value *thinkfunc;
3832 ast_expression *functype = fld_think->expression.next;
3834 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
3835 if (!thinkfunc || !ast_type_adopt(thinkfunc, functype)) {
3836 ast_unref(framenum);
3837 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
3841 if (!parser_next(parser)) {
3842 ast_unref(framenum);
3843 ast_delete(thinkfunc);
3847 parser_addglobal(parser, thinkfunc->name, (ast_expression*)thinkfunc);
3849 nextthink = (ast_expression*)thinkfunc;
3852 nextthink = parse_expression_leave(parser, true, false, false);
3854 ast_unref(framenum);
3855 parseerror(parser, "expected a think-function in [frame,think] notation");
3860 if (!ast_istype(nextthink, ast_value)) {
3861 parseerror(parser, "think-function in [frame,think] notation must be a constant");
3865 if (retval && parser->tok != ']') {
3866 parseerror(parser, "expected closing `]` for [frame,think] notation");
3870 if (retval && !parser_next(parser)) {
3874 if (retval && parser->tok != '{') {
3875 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
3880 ast_unref(nextthink);
3881 ast_unref(framenum);
3885 has_frame_think = true;
3888 block = ast_block_new(parser_ctx(parser));
3890 parseerror(parser, "failed to allocate block");
3891 if (has_frame_think) {
3892 ast_unref(nextthink);
3893 ast_unref(framenum);
3898 if (has_frame_think) {
3900 ast_expression *self_frame;
3901 ast_expression *self_nextthink;
3902 ast_expression *self_think;
3903 ast_expression *time_plus_1;
3904 ast_store *store_frame;
3905 ast_store *store_nextthink;
3906 ast_store *store_think;
3908 ctx = parser_ctx(parser);
3909 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
3910 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
3911 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
3913 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
3914 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
3916 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
3917 if (self_frame) ast_delete(self_frame);
3918 if (self_nextthink) ast_delete(self_nextthink);
3919 if (self_think) ast_delete(self_think);
3920 if (time_plus_1) ast_delete(time_plus_1);
3926 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
3927 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
3928 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
3931 ast_delete(self_frame);
3934 if (!store_nextthink) {
3935 ast_delete(self_nextthink);
3939 ast_delete(self_think);
3943 if (store_frame) ast_delete(store_frame);
3944 if (store_nextthink) ast_delete(store_nextthink);
3945 if (store_think) ast_delete(store_think);
3948 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
3949 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
3950 !ast_block_add_expr(block, (ast_expression*)store_think))
3957 parseerror(parser, "failed to generate code for [frame,think]");
3958 ast_unref(nextthink);
3959 ast_unref(framenum);
3965 func = ast_function_new(ast_ctx(var), var->name, var);
3967 parseerror(parser, "failed to allocate function for `%s`", var->name);
3968 ast_block_delete(block);
3971 vec_push(parser->functions, func);
3973 parser_enterblock(parser);
3975 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
3977 ast_value *param = var->expression.params[parami];
3980 if (param->expression.vtype != TYPE_VECTOR &&
3981 (param->expression.vtype != TYPE_FIELD ||
3982 param->expression.next->expression.vtype != TYPE_VECTOR))
3987 if (!create_vector_members(param, me)) {
3988 ast_block_delete(block);
3992 for (e = 0; e < 3; ++e) {
3993 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
3994 ast_block_collect(block, (ast_expression*)me[e]);
3998 if (var->argcounter) {
3999 ast_value *argc = ast_value_new(ast_ctx(var), var->argcounter, TYPE_FLOAT);
4000 parser_addlocal(parser, argc->name, (ast_expression*)argc);
4004 if (OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
4006 ast_value *varargs = ast_value_new(ast_ctx(var), "reserved:va_args", TYPE_ARRAY);
4007 varargs->expression.flags |= AST_FLAG_IS_VARARG;
4008 varargs->expression.next = (ast_expression*)ast_value_new(ast_ctx(var), NULL, TYPE_VECTOR);
4009 varargs->expression.count = 0;
4010 snprintf(name, sizeof(name), "%s##va##SET", var->name);
4011 if (!parser_create_array_setter_proto(parser, varargs, name)) {
4012 ast_delete(varargs);
4013 ast_block_delete(block);
4016 snprintf(name, sizeof(name), "%s##va##GET", var->name);
4017 if (!parser_create_array_getter_proto(parser, varargs, varargs->expression.next, name)) {
4018 ast_delete(varargs);
4019 ast_block_delete(block);
4022 func->varargs = varargs;
4024 func->fixedparams = parser_const_float(parser, vec_size(var->expression.params));
4027 parser->function = func;
4028 if (!parse_block_into(parser, block)) {
4029 ast_block_delete(block);
4033 vec_push(func->blocks, block);
4035 parser->function = old;
4036 if (!parser_leaveblock(parser))
4038 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
4039 parseerror(parser, "internal error: local scopes left");
4043 if (parser->tok == ';')
4044 return parser_next(parser);
4045 else if (opts.standard == COMPILER_QCC)
4046 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
4050 (void)!parser_leaveblock(parser);
4051 vec_pop(parser->functions);
4052 ast_function_delete(func);
4053 var->constval.vfunc = NULL;
4056 parser->function = old;
4060 static ast_expression *array_accessor_split(
4065 ast_expression *left,
4066 ast_expression *right
4072 lex_ctx ctx = ast_ctx(array);
4074 if (!left || !right) {
4075 if (left) ast_delete(left);
4076 if (right) ast_delete(right);
4080 cmp = ast_binary_new(ctx, INSTR_LT,
4081 (ast_expression*)index,
4082 (ast_expression*)parser_const_float(parser, middle));
4086 parseerror(parser, "internal error: failed to create comparison for array setter");
4090 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
4092 ast_delete(cmp); /* will delete left and right */
4093 parseerror(parser, "internal error: failed to create conditional jump for array setter");
4097 return (ast_expression*)ifthen;
4100 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
4102 lex_ctx ctx = ast_ctx(array);
4104 if (from+1 == afterend) {
4105 /* set this value */
4108 ast_array_index *subscript;
4110 int assignop = type_store_instr[value->expression.vtype];
4112 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
4113 assignop = INSTR_STORE_V;
4115 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4119 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
4121 ast_delete(subscript);
4125 block = ast_block_new(ctx);
4131 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4136 ret = ast_return_new(ctx, NULL);
4142 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4147 return (ast_expression*)block;
4149 ast_expression *left, *right;
4150 size_t diff = afterend - from;
4151 size_t middle = from + diff/2;
4152 left = array_setter_node(parser, array, index, value, from, middle);
4153 right = array_setter_node(parser, array, index, value, middle, afterend);
4154 return array_accessor_split(parser, array, index, middle, left, right);
4158 static ast_expression *array_field_setter_node(
4167 lex_ctx ctx = ast_ctx(array);
4169 if (from+1 == afterend) {
4170 /* set this value */
4173 ast_entfield *entfield;
4174 ast_array_index *subscript;
4176 int assignop = type_storep_instr[value->expression.vtype];
4178 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
4179 assignop = INSTR_STOREP_V;
4181 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4185 subscript->expression.next = ast_type_copy(ast_ctx(subscript), (ast_expression*)subscript);
4186 subscript->expression.vtype = TYPE_FIELD;
4188 entfield = ast_entfield_new_force(ctx,
4189 (ast_expression*)entity,
4190 (ast_expression*)subscript,
4191 (ast_expression*)subscript);
4193 ast_delete(subscript);
4197 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
4199 ast_delete(entfield);
4203 block = ast_block_new(ctx);
4209 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4214 ret = ast_return_new(ctx, NULL);
4220 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4225 return (ast_expression*)block;
4227 ast_expression *left, *right;
4228 size_t diff = afterend - from;
4229 size_t middle = from + diff/2;
4230 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
4231 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
4232 return array_accessor_split(parser, array, index, middle, left, right);
4236 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
4238 lex_ctx ctx = ast_ctx(array);
4240 if (from+1 == afterend) {
4242 ast_array_index *subscript;
4244 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4248 ret = ast_return_new(ctx, (ast_expression*)subscript);
4250 ast_delete(subscript);
4254 return (ast_expression*)ret;
4256 ast_expression *left, *right;
4257 size_t diff = afterend - from;
4258 size_t middle = from + diff/2;
4259 left = array_getter_node(parser, array, index, from, middle);
4260 right = array_getter_node(parser, array, index, middle, afterend);
4261 return array_accessor_split(parser, array, index, middle, left, right);
4265 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
4267 ast_function *func = NULL;
4268 ast_value *fval = NULL;
4269 ast_block *body = NULL;
4271 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
4273 parseerror(parser, "failed to create accessor function value");
4277 func = ast_function_new(ast_ctx(array), funcname, fval);
4280 parseerror(parser, "failed to create accessor function node");
4284 body = ast_block_new(ast_ctx(array));
4286 parseerror(parser, "failed to create block for array accessor");
4292 vec_push(func->blocks, body);
4295 vec_push(parser->accessors, fval);
4300 static ast_value* parser_create_array_setter_proto(parser_t *parser, ast_value *array, const char *funcname)
4302 ast_value *index = NULL;
4303 ast_value *value = NULL;
4307 if (!ast_istype(array->expression.next, ast_value)) {
4308 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4312 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4314 func = fval->constval.vfunc;
4315 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4317 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4318 value = ast_value_copy((ast_value*)array->expression.next);
4320 if (!index || !value) {
4321 parseerror(parser, "failed to create locals for array accessor");
4324 (void)!ast_value_set_name(value, "value"); /* not important */
4325 vec_push(fval->expression.params, index);
4326 vec_push(fval->expression.params, value);
4328 array->setter = fval;
4331 if (index) ast_delete(index);
4332 if (value) ast_delete(value);
4338 static bool parser_create_array_setter_impl(parser_t *parser, ast_value *array)
4340 ast_expression *root = NULL;
4341 root = array_setter_node(parser, array,
4342 array->setter->expression.params[0],
4343 array->setter->expression.params[1],
4344 0, array->expression.count);
4346 parseerror(parser, "failed to build accessor search tree");
4349 if (!ast_block_add_expr(array->setter->constval.vfunc->blocks[0], root)) {
4356 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
4358 if (!parser_create_array_setter_proto(parser, array, funcname))
4360 return parser_create_array_setter_impl(parser, array);
4363 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
4365 ast_expression *root = NULL;
4366 ast_value *entity = NULL;
4367 ast_value *index = NULL;
4368 ast_value *value = NULL;
4372 if (!ast_istype(array->expression.next, ast_value)) {
4373 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4377 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4379 func = fval->constval.vfunc;
4380 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4382 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
4383 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4384 value = ast_value_copy((ast_value*)array->expression.next);
4385 if (!entity || !index || !value) {
4386 parseerror(parser, "failed to create locals for array accessor");
4389 (void)!ast_value_set_name(value, "value"); /* not important */
4390 vec_push(fval->expression.params, entity);
4391 vec_push(fval->expression.params, index);
4392 vec_push(fval->expression.params, value);
4394 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
4396 parseerror(parser, "failed to build accessor search tree");
4400 array->setter = fval;
4401 return ast_block_add_expr(func->blocks[0], root);
4403 if (entity) ast_delete(entity);
4404 if (index) ast_delete(index);
4405 if (value) ast_delete(value);
4406 if (root) ast_delete(root);
4412 static ast_value* parser_create_array_getter_proto(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4414 ast_value *index = NULL;
4418 /* NOTE: checking array->expression.next rather than elemtype since
4419 * for fields elemtype is a temporary fieldtype.
4421 if (!ast_istype(array->expression.next, ast_value)) {
4422 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4426 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4428 func = fval->constval.vfunc;
4429 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
4431 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4434 parseerror(parser, "failed to create locals for array accessor");
4437 vec_push(fval->expression.params, index);
4439 array->getter = fval;
4442 if (index) ast_delete(index);
4448 static bool parser_create_array_getter_impl(parser_t *parser, ast_value *array)
4450 ast_expression *root = NULL;
4452 root = array_getter_node(parser, array, array->getter->expression.params[0], 0, array->expression.count);
4454 parseerror(parser, "failed to build accessor search tree");
4457 if (!ast_block_add_expr(array->getter->constval.vfunc->blocks[0], root)) {
4464 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4466 if (!parser_create_array_getter_proto(parser, array, elemtype, funcname))
4468 return parser_create_array_getter_impl(parser, array);
4471 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
4472 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
4480 bool variadic = false;
4481 ast_value *varparam = NULL;
4482 char *argcounter = NULL;
4484 ctx = parser_ctx(parser);
4486 /* for the sake of less code we parse-in in this function */
4487 if (!parser_next(parser)) {
4488 parseerror(parser, "expected parameter list");
4494 /* parse variables until we hit a closing paren */
4495 while (parser->tok != ')') {
4497 /* there must be commas between them */
4498 if (parser->tok != ',') {
4499 parseerror(parser, "expected comma or end of parameter list");
4502 if (!parser_next(parser)) {
4503 parseerror(parser, "expected parameter");
4509 if (parser->tok == TOKEN_DOTS) {
4510 /* '...' indicates a varargs function */
4512 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4513 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4516 if (parser->tok == TOKEN_IDENT) {
4517 argcounter = util_strdup(parser_tokval(parser));
4518 if (!parser_next(parser) || parser->tok != ')') {
4519 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4526 /* for anything else just parse a typename */
4527 param = parse_typename(parser, NULL, NULL);
4530 vec_push(params, param);
4531 if (param->expression.vtype >= TYPE_VARIANT) {
4532 char tname[1024]; /* typename is reserved in C++ */
4533 ast_type_to_string((ast_expression*)param, tname, sizeof(tname));
4534 parseerror(parser, "type not supported as part of a parameter list: %s", tname);
4537 /* type-restricted varargs */
4538 if (parser->tok == TOKEN_DOTS) {
4540 varparam = vec_last(params);
4542 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4543 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4546 if (parser->tok == TOKEN_IDENT) {
4547 argcounter = util_strdup(parser_tokval(parser));
4548 if (!parser_next(parser) || parser->tok != ')') {
4549 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4557 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
4561 if (vec_size(params) > 8 && opts.standard == COMPILER_QCC)
4562 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
4565 if (!parser_next(parser)) {
4566 parseerror(parser, "parse error after typename");
4570 /* now turn 'var' into a function type */
4571 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
4572 fval->expression.next = (ast_expression*)var;
4574 fval->expression.flags |= AST_FLAG_VARIADIC;
4577 var->expression.params = params;
4578 var->expression.varparam = (ast_expression*)varparam;
4579 var->argcounter = argcounter;
4588 for (i = 0; i < vec_size(params); ++i)
4589 ast_delete(params[i]);
4594 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
4596 ast_expression *cexp;
4597 ast_value *cval, *tmp;
4600 ctx = parser_ctx(parser);
4602 if (!parser_next(parser)) {
4604 parseerror(parser, "expected array-size");
4608 cexp = parse_expression_leave(parser, true, false, false);
4610 if (!cexp || !ast_istype(cexp, ast_value)) {
4614 parseerror(parser, "expected array-size as constant positive integer");
4617 cval = (ast_value*)cexp;
4619 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
4620 tmp->expression.next = (ast_expression*)var;
4623 if (cval->expression.vtype == TYPE_INTEGER)
4624 tmp->expression.count = cval->constval.vint;
4625 else if (cval->expression.vtype == TYPE_FLOAT)
4626 tmp->expression.count = cval->constval.vfloat;
4630 parseerror(parser, "array-size must be a positive integer constant");
4635 if (parser->tok != ']') {
4637 parseerror(parser, "expected ']' after array-size");
4640 if (!parser_next(parser)) {
4642 parseerror(parser, "error after parsing array size");
4648 /* Parse a complete typename.
4649 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
4650 * but when parsing variables separated by comma
4651 * 'storebase' should point to where the base-type should be kept.
4652 * The base type makes up every bit of type information which comes *before* the
4655 * The following will be parsed in its entirety:
4657 * The 'basetype' in this case is 'void()'
4658 * and if there's a comma after it, say:
4660 * then the type-information 'void()' can be stored in 'storebase'
4662 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
4664 ast_value *var, *tmp;
4667 const char *name = NULL;
4668 bool isfield = false;
4669 bool wasarray = false;
4670 size_t morefields = 0;
4672 ctx = parser_ctx(parser);
4674 /* types may start with a dot */
4675 if (parser->tok == '.') {
4677 /* if we parsed a dot we need a typename now */
4678 if (!parser_next(parser)) {
4679 parseerror(parser, "expected typename for field definition");
4683 /* Further dots are handled seperately because they won't be part of the
4686 while (parser->tok == '.') {
4688 if (!parser_next(parser)) {
4689 parseerror(parser, "expected typename for field definition");
4694 if (parser->tok == TOKEN_IDENT)
4695 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
4696 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
4697 parseerror(parser, "expected typename");
4701 /* generate the basic type value */
4702 if (cached_typedef) {
4703 var = ast_value_copy(cached_typedef);
4704 ast_value_set_name(var, "<type(from_def)>");
4706 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
4708 for (; morefields; --morefields) {
4709 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
4710 tmp->expression.next = (ast_expression*)var;
4714 /* do not yet turn into a field - remember:
4715 * .void() foo; is a field too
4716 * .void()() foo; is a function
4720 if (!parser_next(parser)) {
4722 parseerror(parser, "parse error after typename");
4726 /* an opening paren now starts the parameter-list of a function
4727 * this is where original-QC has parameter lists.
4728 * We allow a single parameter list here.
4729 * Much like fteqcc we don't allow `float()() x`
4731 if (parser->tok == '(') {
4732 var = parse_parameter_list(parser, var);
4737 /* store the base if requested */
4739 *storebase = ast_value_copy(var);
4741 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4742 tmp->expression.next = (ast_expression*)*storebase;
4747 /* there may be a name now */
4748 if (parser->tok == TOKEN_IDENT) {
4749 name = util_strdup(parser_tokval(parser));
4751 if (!parser_next(parser)) {
4753 parseerror(parser, "error after variable or field declaration");
4758 /* now this may be an array */
4759 if (parser->tok == '[') {
4761 var = parse_arraysize(parser, var);
4766 /* This is the point where we can turn it into a field */
4768 /* turn it into a field if desired */
4769 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4770 tmp->expression.next = (ast_expression*)var;
4774 /* now there may be function parens again */
4775 if (parser->tok == '(' && opts.standard == COMPILER_QCC)
4776 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4777 if (parser->tok == '(' && wasarray)
4778 parseerror(parser, "arrays as part of a return type is not supported");
4779 while (parser->tok == '(') {
4780 var = parse_parameter_list(parser, var);
4788 /* finally name it */
4790 if (!ast_value_set_name(var, name)) {
4792 parseerror(parser, "internal error: failed to set name");
4795 /* free the name, ast_value_set_name duplicates */
4802 static bool parse_typedef(parser_t *parser)
4804 ast_value *typevar, *oldtype;
4805 ast_expression *old;
4807 typevar = parse_typename(parser, NULL, NULL);
4812 if ( (old = parser_find_var(parser, typevar->name)) ) {
4813 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
4814 " -> `%s` has been declared here: %s:%i",
4815 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
4816 ast_delete(typevar);
4820 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
4821 parseerror(parser, "type `%s` has already been declared here: %s:%i",
4822 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
4823 ast_delete(typevar);
4827 vec_push(parser->_typedefs, typevar);
4828 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
4830 if (parser->tok != ';') {
4831 parseerror(parser, "expected semicolon after typedef");
4834 if (!parser_next(parser)) {
4835 parseerror(parser, "parse error after typedef");
4842 static const char *cvq_to_str(int cvq) {
4844 case CV_NONE: return "none";
4845 case CV_VAR: return "`var`";
4846 case CV_CONST: return "`const`";
4847 default: return "<INVALID>";
4851 static bool parser_check_qualifiers(parser_t *parser, const ast_value *var, const ast_value *proto)
4854 if (proto->cvq != var->cvq) {
4855 if (!(proto->cvq == CV_CONST && var->cvq == CV_NONE &&
4856 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
4857 parser->tok == '='))
4859 return !parsewarning(parser, WARN_DIFFERENT_QUALIFIERS,
4860 "`%s` declared with different qualifiers: %s\n"
4861 " -> previous declaration here: %s:%i uses %s",
4862 var->name, cvq_to_str(var->cvq),
4863 ast_ctx(proto).file, ast_ctx(proto).line,
4864 cvq_to_str(proto->cvq));
4867 av = (var ->expression.flags & AST_FLAG_NORETURN);
4868 ao = (proto->expression.flags & AST_FLAG_NORETURN);
4870 return !parsewarning(parser, WARN_DIFFERENT_ATTRIBUTES,
4871 "`%s` declared with different attributes%s\n"
4872 " -> previous declaration here: %s:%i",
4873 var->name, (av ? ": noreturn" : ""),
4874 ast_ctx(proto).file, ast_ctx(proto).line,
4875 (ao ? ": noreturn" : ""));
4880 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)
4884 ast_expression *old;
4888 ast_value *basetype = NULL;
4890 bool isparam = false;
4891 bool isvector = false;
4892 bool cleanvar = true;
4893 bool wasarray = false;
4897 if (!localblock && is_static)
4898 parseerror(parser, "`static` qualifier is not supported in global scope");
4900 /* get the first complete variable */
4901 var = parse_typename(parser, &basetype, cached_typedef);
4904 ast_delete(basetype);
4912 /* Part 0: finish the type */
4913 if (parser->tok == '(') {
4914 if (opts.standard == COMPILER_QCC)
4915 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4916 var = parse_parameter_list(parser, var);
4922 /* we only allow 1-dimensional arrays */
4923 if (parser->tok == '[') {
4925 var = parse_arraysize(parser, var);
4931 if (parser->tok == '(' && wasarray) {
4932 parseerror(parser, "arrays as part of a return type is not supported");
4933 /* we'll still parse the type completely for now */
4935 /* for functions returning functions */
4936 while (parser->tok == '(') {
4937 if (opts.standard == COMPILER_QCC)
4938 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4939 var = parse_parameter_list(parser, var);
4946 var->cvq = qualifier;
4947 var->expression.flags |= qflags;
4948 if (var->expression.flags & AST_FLAG_DEPRECATED)
4949 var->desc = vstring;
4952 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
4953 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
4954 * is then filled with the previous definition and the parameter-names replaced.
4956 if (!strcmp(var->name, "nil")) {
4957 if (OPTS_FLAG(UNTYPED_NIL)) {
4958 if (!localblock || !OPTS_FLAG(PERMISSIVE))
4959 parseerror(parser, "name `nil` not allowed (try -fpermissive)");
4961 (void)!parsewarning(parser, WARN_RESERVED_NAMES, "variable name `nil` is reserved");
4964 /* Deal with end_sys_ vars */
4966 if (!strcmp(var->name, "end_sys_globals")) {
4968 parser->crc_globals = vec_size(parser->globals);
4971 else if (!strcmp(var->name, "end_sys_fields")) {
4973 parser->crc_fields = vec_size(parser->fields);
4976 if (was_end && var->expression.vtype == TYPE_FIELD) {
4977 if (parsewarning(parser, WARN_END_SYS_FIELDS,
4978 "global '%s' hint should not be a field",
4979 parser_tokval(parser)))
4986 if (!nofields && var->expression.vtype == TYPE_FIELD)
4988 /* deal with field declarations */
4989 old = parser_find_field(parser, var->name);
4991 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
4992 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
5001 parseerror(parser, "field `%s` already declared here: %s:%i",
5002 var->name, ast_ctx(old).file, ast_ctx(old).line);
5007 if ((opts.standard == COMPILER_QCC || opts.standard == COMPILER_FTEQCC) &&
5008 (old = parser_find_global(parser, var->name)))
5010 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5011 parseerror(parser, "field `%s` already declared here: %s:%i",
5012 var->name, ast_ctx(old).file, ast_ctx(old).line);
5019 /* deal with other globals */
5020 old = parser_find_global(parser, var->name);
5021 if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
5023 /* This is a function which had a prototype */
5024 if (!ast_istype(old, ast_value)) {
5025 parseerror(parser, "internal error: prototype is not an ast_value");
5029 proto = (ast_value*)old;
5030 proto->desc = var->desc;
5031 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
5032 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
5034 ast_ctx(proto).file, ast_ctx(proto).line);
5038 /* we need the new parameter-names */
5039 for (i = 0; i < vec_size(proto->expression.params); ++i)
5040 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
5041 if (!parser_check_qualifiers(parser, var, proto)) {
5048 proto->expression.flags |= var->expression.flags;
5056 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
5057 "global `%s` already declared here: %s:%i",
5058 var->name, ast_ctx(old).file, ast_ctx(old).line))
5063 proto = (ast_value*)old;
5064 if (!ast_istype(old, ast_value)) {
5065 parseerror(parser, "internal error: not an ast_value");
5070 if (!parser_check_qualifiers(parser, var, proto)) {
5075 proto->expression.flags |= var->expression.flags;
5079 if (opts.standard == COMPILER_QCC &&
5080 (old = parser_find_field(parser, var->name)))
5082 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5083 parseerror(parser, "global `%s` already declared here: %s:%i",
5084 var->name, ast_ctx(old).file, ast_ctx(old).line);
5091 else /* it's not a global */
5093 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
5094 if (old && !isparam) {
5095 parseerror(parser, "local `%s` already declared here: %s:%i",
5096 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5100 old = parser_find_local(parser, var->name, 0, &isparam);
5101 if (old && isparam) {
5102 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
5103 "local `%s` is shadowing a parameter", var->name))
5105 parseerror(parser, "local `%s` already declared here: %s:%i",
5106 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5110 if (opts.standard != COMPILER_GMQCC) {
5118 /* in a noref section we simply bump the usecount */
5119 if (noref || parser->noref)
5123 * Create the global/local, and deal with vector types.
5126 if (var->expression.vtype == TYPE_VECTOR)
5128 else if (var->expression.vtype == TYPE_FIELD &&
5129 var->expression.next->expression.vtype == TYPE_VECTOR)
5133 if (!create_vector_members(var, me)) {
5140 /* deal with global variables, fields, functions */
5141 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
5142 var->isfield = true;
5143 vec_push(parser->fields, (ast_expression*)var);
5144 util_htset(parser->htfields, var->name, var);
5146 for (i = 0; i < 3; ++i) {
5147 vec_push(parser->fields, (ast_expression*)me[i]);
5148 util_htset(parser->htfields, me[i]->name, me[i]);
5153 parser_addglobal(parser, var->name, (ast_expression*)var);
5155 for (i = 0; i < 3; ++i) {
5156 parser_addglobal(parser, me[i]->name, (ast_expression*)me[i]);
5162 /* a static adds itself to be generated like any other global
5163 * but is added to the local namespace instead
5165 char *defname = NULL;
5166 size_t prefix_len, ln;
5168 ln = strlen(parser->function->name);
5169 vec_append(defname, ln, parser->function->name);
5171 vec_append(defname, 2, "::");
5172 /* remember the length up to here */
5173 prefix_len = vec_size(defname);
5175 /* Add it to the local scope */
5176 util_htset(vec_last(parser->variables), var->name, (void*)var);
5180 vec_last(parser->correct_variables),
5181 &vec_last(parser->correct_variables_score),
5185 /* now rename the global */
5186 ln = strlen(var->name);
5187 vec_append(defname, ln, var->name);
5188 ast_value_set_name(var, defname);
5190 /* push it to the to-be-generated globals */
5191 vec_push(parser->globals, (ast_expression*)var);
5193 /* same game for the vector members */
5195 for (i = 0; i < 3; ++i) {
5196 util_htset(vec_last(parser->variables), me[i]->name, (void*)(me[i]));
5200 vec_last(parser->correct_variables),
5201 &vec_last(parser->correct_variables_score),
5205 vec_shrinkto(defname, prefix_len);
5206 ln = strlen(me[i]->name);
5207 vec_append(defname, ln, me[i]->name);
5208 ast_member_set_name(me[i], defname);
5210 vec_push(parser->globals, (ast_expression*)me[i]);
5215 vec_push(localblock->locals, var);
5216 parser_addlocal(parser, var->name, (ast_expression*)var);
5218 for (i = 0; i < 3; ++i) {
5219 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
5220 ast_block_collect(localblock, (ast_expression*)me[i]);
5226 me[0] = me[1] = me[2] = NULL;
5231 if (var->expression.vtype == TYPE_ARRAY) {
5233 snprintf(name, sizeof(name), "%s##SET", var->name);
5234 if (!parser_create_array_setter(parser, var, name))
5236 snprintf(name, sizeof(name), "%s##GET", var->name);
5237 if (!parser_create_array_getter(parser, var, var->expression.next, name))
5240 else if (!localblock && !nofields &&
5241 var->expression.vtype == TYPE_FIELD &&
5242 var->expression.next->expression.vtype == TYPE_ARRAY)
5245 ast_expression *telem;
5247 ast_value *array = (ast_value*)var->expression.next;
5249 if (!ast_istype(var->expression.next, ast_value)) {
5250 parseerror(parser, "internal error: field element type must be an ast_value");
5254 snprintf(name, sizeof(name), "%s##SETF", var->name);
5255 if (!parser_create_array_field_setter(parser, array, name))
5258 telem = ast_type_copy(ast_ctx(var), array->expression.next);
5259 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
5260 tfield->expression.next = telem;
5261 snprintf(name, sizeof(name), "%s##GETFP", var->name);
5262 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
5270 if (parser->tok == ';') {
5271 ast_delete(basetype);
5272 if (!parser_next(parser)) {
5273 parseerror(parser, "error after variable declaration");
5279 if (parser->tok == ',')
5283 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
5286 parseerror(parser, "missing comma or semicolon while parsing variables");
5290 if (localblock && opts.standard == COMPILER_QCC) {
5291 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
5292 "initializing expression turns variable `%s` into a constant in this standard",
5299 if (parser->tok != '{') {
5300 if (parser->tok != '=') {
5301 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
5305 if (!parser_next(parser)) {
5306 parseerror(parser, "error parsing initializer");
5310 else if (opts.standard == COMPILER_QCC) {
5311 parseerror(parser, "expected '=' before function body in this standard");
5314 if (parser->tok == '#') {
5315 ast_function *func = NULL;
5318 parseerror(parser, "cannot declare builtins within functions");
5321 if (var->expression.vtype != TYPE_FUNCTION) {
5322 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
5325 if (!parser_next(parser)) {
5326 parseerror(parser, "expected builtin number");
5329 if (parser->tok != TOKEN_INTCONST) {
5330 parseerror(parser, "builtin number must be an integer constant");
5333 if (parser_token(parser)->constval.i < 0) {
5334 parseerror(parser, "builtin number must be an integer greater than zero");
5338 if (var->hasvalue) {
5339 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
5340 "builtin `%s` has already been defined\n"
5341 " -> previous declaration here: %s:%i",
5342 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
5346 func = ast_function_new(ast_ctx(var), var->name, var);
5348 parseerror(parser, "failed to allocate function for `%s`", var->name);
5351 vec_push(parser->functions, func);
5353 func->builtin = -parser_token(parser)->constval.i-1;
5356 if (!parser_next(parser)) {
5357 parseerror(parser, "expected comma or semicolon");
5359 ast_function_delete(func);
5360 var->constval.vfunc = NULL;
5364 else if (parser->tok == '{' || parser->tok == '[')
5367 parseerror(parser, "cannot declare functions within functions");
5372 ast_ctx(proto) = parser_ctx(parser);
5374 if (!parse_function_body(parser, var))
5376 ast_delete(basetype);
5377 for (i = 0; i < vec_size(parser->gotos); ++i)
5378 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
5379 vec_free(parser->gotos);
5380 vec_free(parser->labels);
5383 ast_expression *cexp;
5386 cexp = parse_expression_leave(parser, true, false, false);
5391 cval = (ast_value*)cexp;
5392 if (cval != parser->nil &&
5393 (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
5396 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
5400 if (!OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
5401 qualifier != CV_VAR)
5403 var->cvq = CV_CONST;
5405 if (cval == parser->nil)
5406 var->expression.flags |= AST_FLAG_INITIALIZED;
5409 var->hasvalue = true;
5410 if (cval->expression.vtype == TYPE_STRING)
5411 var->constval.vstring = parser_strdup(cval->constval.vstring);
5412 else if (cval->expression.vtype == TYPE_FIELD)
5413 var->constval.vfield = cval;
5415 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
5421 shunt sy = { NULL, NULL, NULL, NULL };
5424 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
5425 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
5426 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
5427 if (!parser_sy_apply_operator(parser, &sy))
5430 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
5431 parseerror(parser, "internal error: leaked operands");
5432 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
5442 if (parser->tok == ',') {
5443 if (!parser_next(parser)) {
5444 parseerror(parser, "expected another variable");
5448 if (parser->tok != TOKEN_IDENT) {
5449 parseerror(parser, "expected another variable");
5452 var = ast_value_copy(basetype);
5454 ast_value_set_name(var, parser_tokval(parser));
5455 if (!parser_next(parser)) {
5456 parseerror(parser, "error parsing variable declaration");
5462 if (parser->tok != ';') {
5463 parseerror(parser, "missing semicolon after variables");
5467 if (!parser_next(parser)) {
5468 parseerror(parser, "parse error after variable declaration");
5472 ast_delete(basetype);
5476 if (cleanvar && var)
5478 ast_delete(basetype);
5482 ast_delete(basetype);
5483 if (cleanvar && var)
5485 if (me[0]) ast_member_delete(me[0]);
5486 if (me[1]) ast_member_delete(me[1]);
5487 if (me[2]) ast_member_delete(me[2]);
5491 static bool parser_global_statement(parser_t *parser)
5495 bool is_static = false;
5496 uint32_t qflags = 0;
5497 ast_value *istype = NULL;
5498 char *vstring = NULL;
5500 if (parser->tok == TOKEN_IDENT)
5501 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
5503 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
5505 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false, 0, NULL);
5507 else if (parse_qualifiers(parser, false, &cvq, &noref, &is_static, &qflags, &vstring))
5509 if (cvq == CV_WRONG)
5511 return parse_variable(parser, NULL, true, cvq, NULL, noref, is_static, qflags, vstring);
5513 else if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "enum"))
5515 return parse_enum(parser);
5517 else if (parser->tok == TOKEN_KEYWORD)
5519 if (!strcmp(parser_tokval(parser), "typedef")) {
5520 if (!parser_next(parser)) {
5521 parseerror(parser, "expected type definition after 'typedef'");
5524 return parse_typedef(parser);
5526 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
5529 else if (parser->tok == '#')
5531 return parse_pragma(parser);
5533 else if (parser->tok == '$')
5535 if (!parser_next(parser)) {
5536 parseerror(parser, "parse error");
5542 parseerror(parser, "unexpected token: %s", parser->lex->tok.value);
5548 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
5550 return util_crc16(old, str, strlen(str));
5553 static void progdefs_crc_file(const char *str)
5555 /* write to progdefs.h here */
5559 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
5561 old = progdefs_crc_sum(old, str);
5562 progdefs_crc_file(str);
5566 static void generate_checksum(parser_t *parser)
5568 uint16_t crc = 0xFFFF;
5572 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
5573 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
5575 progdefs_crc_file("\tint\tpad;\n");
5576 progdefs_crc_file("\tint\tofs_return[3];\n");
5577 progdefs_crc_file("\tint\tofs_parm0[3];\n");
5578 progdefs_crc_file("\tint\tofs_parm1[3];\n");
5579 progdefs_crc_file("\tint\tofs_parm2[3];\n");
5580 progdefs_crc_file("\tint\tofs_parm3[3];\n");
5581 progdefs_crc_file("\tint\tofs_parm4[3];\n");
5582 progdefs_crc_file("\tint\tofs_parm5[3];\n");
5583 progdefs_crc_file("\tint\tofs_parm6[3];\n");
5584 progdefs_crc_file("\tint\tofs_parm7[3];\n");
5586 for (i = 0; i < parser->crc_globals; ++i) {
5587 if (!ast_istype(parser->globals[i], ast_value))
5589 value = (ast_value*)(parser->globals[i]);
5590 switch (value->expression.vtype) {
5591 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5592 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5593 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5594 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5596 crc = progdefs_crc_both(crc, "\tint\t");
5599 crc = progdefs_crc_both(crc, value->name);
5600 crc = progdefs_crc_both(crc, ";\n");
5602 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
5603 for (i = 0; i < parser->crc_fields; ++i) {
5604 if (!ast_istype(parser->fields[i], ast_value))
5606 value = (ast_value*)(parser->fields[i]);
5607 switch (value->expression.next->expression.vtype) {
5608 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5609 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5610 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5611 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5613 crc = progdefs_crc_both(crc, "\tint\t");
5616 crc = progdefs_crc_both(crc, value->name);
5617 crc = progdefs_crc_both(crc, ";\n");
5619 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
5624 static parser_t *parser;
5631 parser = (parser_t*)mem_a(sizeof(parser_t));
5635 memset(parser, 0, sizeof(*parser));
5637 for (i = 0; i < operator_count; ++i) {
5638 if (operators[i].id == opid1('=')) {
5639 parser->assign_op = operators+i;
5643 if (!parser->assign_op) {
5644 printf("internal error: initializing parser: failed to find assign operator\n");
5649 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
5650 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
5651 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
5652 vec_push(parser->_blocktypedefs, 0);
5655 vec_push(parser->correct_variables, correct_trie_new());
5656 vec_push(parser->correct_variables_score, NULL);
5658 empty_ctx.file = "<internal>";
5660 parser->nil = ast_value_new(empty_ctx, "nil", TYPE_NIL);
5661 parser->nil->cvq = CV_CONST;
5662 if (OPTS_FLAG(UNTYPED_NIL))
5663 util_htset(parser->htglobals, "nil", (void*)parser->nil);
5665 parser->max_param_count = 1;
5667 parser->const_vec[0] = ast_value_new(empty_ctx, "<vector.x>", TYPE_NOEXPR);
5668 parser->const_vec[1] = ast_value_new(empty_ctx, "<vector.y>", TYPE_NOEXPR);
5669 parser->const_vec[2] = ast_value_new(empty_ctx, "<vector.z>", TYPE_NOEXPR);
5671 if (opts.add_info) {
5672 parser->reserved_version = ast_value_new(empty_ctx, "reserved:version", TYPE_STRING);
5673 parser->reserved_version->cvq = CV_CONST;
5674 parser->reserved_version->hasvalue = true;
5675 parser->reserved_version->expression.flags |= AST_FLAG_INCLUDE_DEF;
5676 parser->reserved_version->constval.vstring = util_strdup(GMQCC_FULL_VERSION_STRING);
5678 parser->reserved_version = NULL;
5683 bool parser_compile()
5685 /* initial lexer/parser state */
5686 parser->lex->flags.noops = true;
5688 if (parser_next(parser))
5690 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
5692 if (!parser_global_statement(parser)) {
5693 if (parser->tok == TOKEN_EOF)
5694 parseerror(parser, "unexpected eof");
5695 else if (compile_errors)
5696 parseerror(parser, "there have been errors, bailing out");
5697 lex_close(parser->lex);
5703 parseerror(parser, "parse error");
5704 lex_close(parser->lex);
5709 lex_close(parser->lex);
5712 return !compile_errors;
5715 bool parser_compile_file(const char *filename)
5717 parser->lex = lex_open(filename);
5719 con_err("failed to open file \"%s\"\n", filename);
5722 return parser_compile();
5725 bool parser_compile_string(const char *name, const char *str, size_t len)
5727 parser->lex = lex_open_string(str, len, name);
5729 con_err("failed to create lexer for string \"%s\"\n", name);
5732 return parser_compile();
5735 void parser_cleanup()
5738 for (i = 0; i < vec_size(parser->accessors); ++i) {
5739 ast_delete(parser->accessors[i]->constval.vfunc);
5740 parser->accessors[i]->constval.vfunc = NULL;
5741 ast_delete(parser->accessors[i]);
5743 for (i = 0; i < vec_size(parser->functions); ++i) {
5744 ast_delete(parser->functions[i]);
5746 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
5747 ast_delete(parser->imm_vector[i]);
5749 for (i = 0; i < vec_size(parser->imm_string); ++i) {
5750 ast_delete(parser->imm_string[i]);
5752 for (i = 0; i < vec_size(parser->imm_float); ++i) {
5753 ast_delete(parser->imm_float[i]);
5755 for (i = 0; i < vec_size(parser->fields); ++i) {
5756 ast_delete(parser->fields[i]);
5758 for (i = 0; i < vec_size(parser->globals); ++i) {
5759 ast_delete(parser->globals[i]);
5761 vec_free(parser->accessors);
5762 vec_free(parser->functions);
5763 vec_free(parser->imm_vector);
5764 vec_free(parser->imm_string);
5765 vec_free(parser->imm_float);
5766 vec_free(parser->globals);
5767 vec_free(parser->fields);
5769 for (i = 0; i < vec_size(parser->variables); ++i)
5770 util_htdel(parser->variables[i]);
5771 vec_free(parser->variables);
5772 vec_free(parser->_blocklocals);
5773 vec_free(parser->_locals);
5776 for (i = 0; i < vec_size(parser->correct_variables); ++i) {
5777 correct_del(parser->correct_variables[i], parser->correct_variables_score[i]);
5779 vec_free(parser->correct_variables);
5780 vec_free(parser->correct_variables_score);
5783 for (i = 0; i < vec_size(parser->_typedefs); ++i)
5784 ast_delete(parser->_typedefs[i]);
5785 vec_free(parser->_typedefs);
5786 for (i = 0; i < vec_size(parser->typedefs); ++i)
5787 util_htdel(parser->typedefs[i]);
5788 vec_free(parser->typedefs);
5789 vec_free(parser->_blocktypedefs);
5791 vec_free(parser->_block_ctx);
5793 vec_free(parser->labels);
5794 vec_free(parser->gotos);
5795 vec_free(parser->breaks);
5796 vec_free(parser->continues);
5798 ast_value_delete(parser->nil);
5800 ast_value_delete(parser->const_vec[0]);
5801 ast_value_delete(parser->const_vec[1]);
5802 ast_value_delete(parser->const_vec[2]);
5807 bool parser_finish(const char *output)
5813 if (compile_errors) {
5814 con_out("*** there were compile errors\n");
5818 ir = ir_builder_new("gmqcc_out");
5820 con_out("failed to allocate builder\n");
5824 for (i = 0; i < vec_size(parser->fields); ++i) {
5827 if (!ast_istype(parser->fields[i], ast_value))
5829 field = (ast_value*)parser->fields[i];
5830 hasvalue = field->hasvalue;
5831 field->hasvalue = false;
5832 if (!ast_global_codegen((ast_value*)field, ir, true)) {
5833 con_out("failed to generate field %s\n", field->name);
5834 ir_builder_delete(ir);
5839 ast_expression *subtype;
5840 field->hasvalue = true;
5841 subtype = field->expression.next;
5842 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
5843 if (subtype->expression.vtype == TYPE_FIELD)
5844 ifld->fieldtype = subtype->expression.next->expression.vtype;
5845 else if (subtype->expression.vtype == TYPE_FUNCTION)
5846 ifld->outtype = subtype->expression.next->expression.vtype;
5847 (void)!ir_value_set_field(field->ir_v, ifld);
5850 for (i = 0; i < vec_size(parser->globals); ++i) {
5852 if (!ast_istype(parser->globals[i], ast_value))
5854 asvalue = (ast_value*)(parser->globals[i]);
5855 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
5856 retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
5857 "unused global: `%s`", asvalue->name);
5859 if (!ast_global_codegen(asvalue, ir, false)) {
5860 con_out("failed to generate global %s\n", asvalue->name);
5861 ir_builder_delete(ir);
5865 /* Build function vararg accessor ast tree now before generating
5866 * immediates, because the accessors may add new immediates
5868 for (i = 0; i < vec_size(parser->functions); ++i) {
5869 ast_function *f = parser->functions[i];
5871 if (parser->max_param_count > vec_size(f->vtype->expression.params)) {
5872 f->varargs->expression.count = parser->max_param_count - vec_size(f->vtype->expression.params);
5873 if (!parser_create_array_setter_impl(parser, f->varargs)) {
5874 con_out("failed to generate vararg setter for %s\n", f->name);
5875 ir_builder_delete(ir);
5878 if (!parser_create_array_getter_impl(parser, f->varargs)) {
5879 con_out("failed to generate vararg getter for %s\n", f->name);
5880 ir_builder_delete(ir);
5884 ast_delete(f->varargs);
5889 /* Now we can generate immediates */
5890 for (i = 0; i < vec_size(parser->imm_float); ++i) {
5891 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
5892 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
5893 ir_builder_delete(ir);
5897 for (i = 0; i < vec_size(parser->imm_string); ++i) {
5898 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
5899 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
5900 ir_builder_delete(ir);
5904 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
5905 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
5906 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
5907 ir_builder_delete(ir);
5911 for (i = 0; i < vec_size(parser->globals); ++i) {
5913 if (!ast_istype(parser->globals[i], ast_value))
5915 asvalue = (ast_value*)(parser->globals[i]);
5916 if (!(asvalue->expression.flags & AST_FLAG_INITIALIZED))
5918 if (asvalue->cvq == CV_CONST && !asvalue->hasvalue)
5919 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_CONSTANT,
5920 "uninitialized constant: `%s`",
5922 else if ((asvalue->cvq == CV_NONE || asvalue->cvq == CV_CONST) && !asvalue->hasvalue)
5923 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_GLOBAL,
5924 "uninitialized global: `%s`",
5927 if (!ast_generate_accessors(asvalue, ir)) {
5928 ir_builder_delete(ir);
5932 for (i = 0; i < vec_size(parser->fields); ++i) {
5934 asvalue = (ast_value*)(parser->fields[i]->expression.next);
5936 if (!ast_istype((ast_expression*)asvalue, ast_value))
5938 if (asvalue->expression.vtype != TYPE_ARRAY)
5940 if (!ast_generate_accessors(asvalue, ir)) {
5941 ir_builder_delete(ir);
5945 if (parser->reserved_version &&
5946 !ast_global_codegen(parser->reserved_version, ir, false))
5948 con_out("failed to generate reserved::version");
5949 ir_builder_delete(ir);
5952 for (i = 0; i < vec_size(parser->functions); ++i) {
5953 ast_function *f = parser->functions[i];
5954 if (!ast_function_codegen(f, ir)) {
5955 con_out("failed to generate function %s\n", f->name);
5956 ir_builder_delete(ir);
5961 ir_builder_dump(ir, con_out);
5962 for (i = 0; i < vec_size(parser->functions); ++i) {
5963 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
5964 con_out("failed to finalize function %s\n", parser->functions[i]->name);
5965 ir_builder_delete(ir);
5970 if (compile_Werrors) {
5971 con_out("*** there were warnings treated as errors\n");
5972 compile_show_werrors();
5978 ir_builder_dump(ir, con_out);
5980 generate_checksum(parser);
5982 if (!ir_builder_generate(ir, output)) {
5983 con_out("*** failed to generate output file\n");
5984 ir_builder_delete(ir);
5989 ir_builder_delete(ir);