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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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,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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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 1024
35 #define TYPEDEF_HT_SIZE 16
37 enum parser_pot { POT_PAREN, POT_TERNARY1, POT_TERNARY2 };
42 ast_expression **globals;
43 ast_expression **fields;
44 ast_function **functions;
45 ast_value **imm_float;
46 ast_value **imm_string;
47 ast_value **imm_vector;
50 /* must be deleted first, they reference immediates and values */
51 ast_value **accessors;
53 ast_value *imm_float_zero;
54 ast_value *imm_float_one;
55 ast_value *imm_vector_zero;
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;
91 /* TYPE_FIELD -> parser_find_fields is used instead of find_var
92 * TODO: TYPE_VECTOR -> x, y and z are accepted in the gmqcc standard
93 * anything else: type error
97 /* Keep track of our ternary vs parenthesis nesting state.
98 * If we reach a 'comma' operator in a ternary without a paren,
99 * we shall trigger -Wternary-precedence.
101 enum parser_pot *pot;
107 static const ast_expression *intrinsic_debug_typestring = (ast_expression*)0x10;
109 static void parser_enterblock(parser_t *parser);
110 static bool parser_leaveblock(parser_t *parser);
111 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e);
112 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e);
113 static bool parse_typedef(parser_t *parser);
114 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);
115 static ast_block* parse_block(parser_t *parser);
116 static bool parse_block_into(parser_t *parser, ast_block *block);
117 static bool parse_statement_or_block(parser_t *parser, ast_expression **out);
118 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases);
119 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels);
120 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels);
122 static void parseerror(parser_t *parser, const char *fmt, ...)
126 vcompile_error(parser->lex->tok.ctx, fmt, ap);
130 /* returns true if it counts as an error */
131 static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
136 r = vcompile_warning(parser->lex->tok.ctx, warntype, fmt, ap);
141 static bool GMQCC_WARN genwarning(lex_ctx ctx, int warntype, const char *fmt, ...)
146 r = vcompile_warning(ctx, warntype, fmt, ap);
151 /**********************************************************************
152 * some maths used for constant folding
155 vector vec3_add(vector a, vector b)
164 vector vec3_sub(vector a, vector b)
173 qcfloat vec3_mulvv(vector a, vector b)
175 return (a.x * b.x + a.y * b.y + a.z * b.z);
178 vector vec3_mulvf(vector a, float b)
187 /**********************************************************************
191 bool parser_next(parser_t *parser)
193 /* lex_do kills the previous token */
194 parser->tok = lex_do(parser->lex);
195 if (parser->tok == TOKEN_EOF)
197 if (parser->tok >= TOKEN_ERROR) {
198 parseerror(parser, "lex error");
204 #define parser_tokval(p) ((p)->lex->tok.value)
205 #define parser_token(p) (&((p)->lex->tok))
206 #define parser_ctx(p) ((p)->lex->tok.ctx)
208 static ast_value* parser_const_float(parser_t *parser, double d)
212 for (i = 0; i < vec_size(parser->imm_float); ++i) {
213 const double compare = parser->imm_float[i]->constval.vfloat;
214 if (memcmp((const void*)&compare, (const void *)&d, sizeof(double)) == 0)
215 return parser->imm_float[i];
217 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_FLOAT);
219 out->hasvalue = true;
220 out->constval.vfloat = d;
221 vec_push(parser->imm_float, out);
225 static ast_value* parser_const_float_0(parser_t *parser)
227 if (!parser->imm_float_zero)
228 parser->imm_float_zero = parser_const_float(parser, 0);
229 return parser->imm_float_zero;
232 static ast_value* parser_const_float_1(parser_t *parser)
234 if (!parser->imm_float_one)
235 parser->imm_float_one = parser_const_float(parser, 1);
236 return parser->imm_float_one;
239 static char *parser_strdup(const char *str)
242 /* actually dup empty strings */
243 char *out = (char*)mem_a(1);
247 return util_strdup(str);
250 static ast_value* parser_const_string(parser_t *parser, const char *str, bool dotranslate)
254 for (i = 0; i < vec_size(parser->imm_string); ++i) {
255 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
256 return parser->imm_string[i];
260 snprintf(name, sizeof(name), "dotranslate_%lu", (unsigned long)(parser->translated++));
261 out = ast_value_new(parser_ctx(parser), name, TYPE_STRING);
263 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
265 out->hasvalue = true;
266 out->constval.vstring = parser_strdup(str);
267 vec_push(parser->imm_string, out);
271 static ast_value* parser_const_vector(parser_t *parser, vector v)
275 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
276 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
277 return parser->imm_vector[i];
279 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
281 out->hasvalue = true;
282 out->constval.vvec = v;
283 vec_push(parser->imm_vector, out);
287 static ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
293 return parser_const_vector(parser, v);
296 static ast_value* parser_const_vector_0(parser_t *parser)
298 if (!parser->imm_vector_zero)
299 parser->imm_vector_zero = parser_const_vector_f(parser, 0, 0, 0);
300 return parser->imm_vector_zero;
303 static ast_expression* parser_find_field(parser_t *parser, const char *name)
305 return ( ast_expression*)util_htget(parser->htfields, name);
308 static ast_expression* parser_find_label(parser_t *parser, const char *name)
311 for(i = 0; i < vec_size(parser->labels); i++)
312 if (!strcmp(parser->labels[i]->name, name))
313 return (ast_expression*)parser->labels[i];
317 static ast_expression* parser_find_global(parser_t *parser, const char *name)
319 return (ast_expression*)util_htget(parser->htglobals, name);
322 static ast_expression* parser_find_param(parser_t *parser, const char *name)
326 if (!parser->function)
328 fun = parser->function->vtype;
329 for (i = 0; i < vec_size(fun->expression.params); ++i) {
330 if (!strcmp(fun->expression.params[i]->name, name))
331 return (ast_expression*)(fun->expression.params[i]);
336 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
341 hash = util_hthash(parser->htglobals, name);
344 for (i = vec_size(parser->variables); i > upto;) {
346 if ( (e = (ast_expression*)util_htgeth(parser->variables[i], name, hash)) )
350 return parser_find_param(parser, name);
353 static ast_expression* parser_find_var(parser_t *parser, const char *name)
357 v = parser_find_local(parser, name, 0, &dummy);
358 if (!v) v = parser_find_global(parser, name);
362 static ast_value* parser_find_typedef(parser_t *parser, const char *name, size_t upto)
366 hash = util_hthash(parser->typedefs[0], name);
368 for (i = vec_size(parser->typedefs); i > upto;) {
370 if ( (e = (ast_value*)util_htgeth(parser->typedefs[i], name, hash)) )
378 size_t etype; /* 0 = expression, others are operators */
382 ast_block *block; /* for commas and function calls */
391 #define SY_PAREN_EXPR '('
392 #define SY_PAREN_FUNC 'f'
393 #define SY_PAREN_INDEX '['
394 #define SY_PAREN_TERNARY '?'
396 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
407 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
411 e.out = (ast_expression*)v;
418 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
420 e.etype = 1 + (op - operators);
429 static sy_elem syparen(lex_ctx ctx, int p, size_t off) {
441 # define DEBUGSHUNTDO(x) x
443 # define DEBUGSHUNTDO(x)
446 /* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
447 * so we need to rotate it to become ent.(foo[n]).
449 static bool rotate_entfield_array_index_nodes(ast_expression **out)
451 ast_array_index *index;
452 ast_entfield *entfield;
456 ast_expression *entity;
458 lex_ctx ctx = ast_ctx(*out);
460 if (!ast_istype(*out, ast_array_index))
462 index = (ast_array_index*)*out;
464 if (!ast_istype(index->array, ast_entfield))
466 entfield = (ast_entfield*)index->array;
468 if (!ast_istype(entfield->field, ast_value))
470 field = (ast_value*)entfield->field;
473 entity = entfield->entity;
477 index = ast_array_index_new(ctx, (ast_expression*)field, sub);
478 entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
479 *out = (ast_expression*)entfield;
484 static bool immediate_is_true(lex_ctx ctx, ast_value *v)
486 switch (v->expression.vtype) {
488 return !!v->constval.vfloat;
490 return !!v->constval.vint;
492 if (OPTS_FLAG(CORRECT_LOGIC))
493 return v->constval.vvec.x &&
494 v->constval.vvec.y &&
497 return !!(v->constval.vvec.x);
499 if (!v->constval.vstring)
501 if (v->constval.vstring && OPTS_FLAG(TRUE_EMPTY_STRINGS))
503 return !!v->constval.vstring[0];
505 compile_error(ctx, "internal error: immediate_is_true on invalid type");
506 return !!v->constval.vfunc;
510 static bool parser_sy_apply_operator(parser_t *parser, shunt *sy)
514 ast_expression *out = NULL;
515 ast_expression *exprs[3];
516 ast_block *blocks[3];
517 ast_value *asvalue[3];
518 ast_binstore *asbinstore;
519 size_t i, assignop, addop, subop;
520 qcint generated_op = 0;
525 if (!vec_size(sy->ops)) {
526 parseerror(parser, "internal error: missing operator");
530 if (vec_last(sy->ops).paren) {
531 parseerror(parser, "unmatched parenthesis");
535 op = &operators[vec_last(sy->ops).etype - 1];
536 ctx = vec_last(sy->ops).ctx;
538 DEBUGSHUNTDO(con_out("apply %s\n", op->op));
540 if (vec_size(sy->out) < op->operands) {
541 parseerror(parser, "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('?',':')))
561 if (ast_istype(exprs[i], ast_label))
562 compile_error(ast_ctx(exprs[i]), "expected expression, got an unknown identifier");
564 compile_error(ast_ctx(exprs[i]), "not an expression");
565 (void)!compile_warning(ast_ctx(exprs[i]), WARN_DEBUG, "expression %u\n", (unsigned int)i);
569 if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
570 parseerror(parser, "internal error: operator cannot be applied on empty blocks");
574 #define NotSameType(T) \
575 (exprs[0]->expression.vtype != exprs[1]->expression.vtype || \
576 exprs[0]->expression.vtype != T)
577 #define CanConstFold1(A) \
578 (ast_istype((A), ast_value) && ((ast_value*)(A))->hasvalue && (((ast_value*)(A))->cvq == CV_CONST) &&\
579 (A)->expression.vtype != TYPE_FUNCTION)
580 #define CanConstFold(A, B) \
581 (CanConstFold1(A) && CanConstFold1(B))
582 #define ConstV(i) (asvalue[(i)]->constval.vvec)
583 #define ConstF(i) (asvalue[(i)]->constval.vfloat)
584 #define ConstS(i) (asvalue[(i)]->constval.vstring)
588 parseerror(parser, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
592 if (exprs[0]->expression.vtype == TYPE_ENTITY) {
593 if (exprs[1]->expression.vtype != TYPE_FIELD) {
594 parseerror(parser, "type error: right hand of member-operand should be an entity-field");
597 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
599 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
600 parseerror(parser, "internal error: vector access is not supposed to be handled at this point");
604 parseerror(parser, "type error: member-of operator on something that is not an entity or vector");
610 if (exprs[0]->expression.vtype != TYPE_ARRAY &&
611 !(exprs[0]->expression.vtype == TYPE_FIELD &&
612 exprs[0]->expression.next->expression.vtype == TYPE_ARRAY))
614 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
615 parseerror(parser, "cannot index value of type %s", ty1);
618 if (exprs[1]->expression.vtype != TYPE_FLOAT) {
619 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
620 parseerror(parser, "index must be of type float, not %s", ty1);
623 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
624 if (rotate_entfield_array_index_nodes(&out))
627 /* This is not broken in fteqcc anymore */
628 if (opts.standard != COMPILER_GMQCC) {
629 /* this error doesn't need to make us bail out */
630 (void)!parsewarning(parser, WARN_EXTENSIONS,
631 "accessing array-field members of an entity without parenthesis\n"
632 " -> this is an extension from -std=gmqcc");
640 if (!ast_block_add_expr(blocks[0], exprs[1]))
643 blocks[0] = ast_block_new(ctx);
644 if (!ast_block_add_expr(blocks[0], exprs[0]) ||
645 !ast_block_add_expr(blocks[0], exprs[1]))
650 if (!ast_block_set_type(blocks[0], exprs[1]))
653 vec_push(sy->out, syblock(ctx, blocks[0]));
660 switch (exprs[0]->expression.vtype) {
662 if (CanConstFold1(exprs[0]))
663 out = (ast_expression*)parser_const_float(parser, -ConstF(0));
665 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
666 (ast_expression*)parser_const_float_0(parser),
670 if (CanConstFold1(exprs[0]))
671 out = (ast_expression*)parser_const_vector_f(parser,
672 -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
674 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
675 (ast_expression*)parser_const_vector_0(parser),
679 parseerror(parser, "invalid types used in expression: cannot negate type %s",
680 type_name[exprs[0]->expression.vtype]);
686 switch (exprs[0]->expression.vtype) {
688 if (CanConstFold1(exprs[0]))
689 out = (ast_expression*)parser_const_float(parser, !ConstF(0));
691 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
694 if (CanConstFold1(exprs[0]))
695 out = (ast_expression*)parser_const_float(parser,
696 (!ConstV(0).x && !ConstV(0).y && !ConstV(0).z));
698 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
701 if (CanConstFold1(exprs[0])) {
702 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
703 out = (ast_expression*)parser_const_float(parser, !ConstS(0));
705 out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
707 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
708 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
710 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
713 /* we don't constant-fold NOT for these types */
715 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
718 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
721 parseerror(parser, "invalid types used in expression: cannot logically negate type %s",
722 type_name[exprs[0]->expression.vtype]);
728 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
729 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
731 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
732 type_name[exprs[0]->expression.vtype],
733 type_name[exprs[1]->expression.vtype]);
736 switch (exprs[0]->expression.vtype) {
738 if (CanConstFold(exprs[0], exprs[1]))
740 out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
743 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
746 if (CanConstFold(exprs[0], exprs[1]))
747 out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
749 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
752 parseerror(parser, "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]);
759 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
760 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
762 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
763 type_name[exprs[1]->expression.vtype],
764 type_name[exprs[0]->expression.vtype]);
767 switch (exprs[0]->expression.vtype) {
769 if (CanConstFold(exprs[0], exprs[1]))
770 out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
772 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
775 if (CanConstFold(exprs[0], exprs[1]))
776 out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
778 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
781 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
782 type_name[exprs[1]->expression.vtype],
783 type_name[exprs[0]->expression.vtype]);
788 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
789 !(exprs[0]->expression.vtype == TYPE_VECTOR &&
790 exprs[1]->expression.vtype == TYPE_FLOAT) &&
791 !(exprs[1]->expression.vtype == TYPE_VECTOR &&
792 exprs[0]->expression.vtype == TYPE_FLOAT)
795 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
796 type_name[exprs[1]->expression.vtype],
797 type_name[exprs[0]->expression.vtype]);
800 switch (exprs[0]->expression.vtype) {
802 if (exprs[1]->expression.vtype == TYPE_VECTOR)
804 if (CanConstFold(exprs[0], exprs[1]))
805 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
807 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
811 if (CanConstFold(exprs[0], exprs[1]))
812 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
814 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
818 if (exprs[1]->expression.vtype == TYPE_FLOAT)
820 if (CanConstFold(exprs[0], exprs[1]))
821 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
823 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
827 if (CanConstFold(exprs[0], exprs[1]))
828 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
829 else if (OPTS_OPTIMIZATION(OPTIM_VECTOR_COMPONENTS) && CanConstFold1(exprs[0])) {
830 vector vec = ConstV(0);
831 if (!vec.y && !vec.z) { /* 'n 0 0' * v */
832 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
833 out = (ast_expression*)ast_member_new(ctx, exprs[1], 0, NULL);
834 out->expression.node.keep = false;
835 ((ast_member*)out)->rvalue = true;
837 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.x), out);
839 else if (!vec.x && !vec.z) { /* '0 n 0' * v */
840 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
841 out = (ast_expression*)ast_member_new(ctx, exprs[1], 1, NULL);
842 out->expression.node.keep = false;
843 ((ast_member*)out)->rvalue = true;
845 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.y), out);
847 else if (!vec.x && !vec.y) { /* '0 n 0' * v */
848 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
849 out = (ast_expression*)ast_member_new(ctx, exprs[1], 2, NULL);
850 out->expression.node.keep = false;
851 ((ast_member*)out)->rvalue = true;
853 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.z), out);
856 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
858 else if (OPTS_OPTIMIZATION(OPTIM_VECTOR_COMPONENTS) && CanConstFold1(exprs[1])) {
859 vector vec = ConstV(1);
860 if (!vec.y && !vec.z) { /* v * 'n 0 0' */
861 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
862 out = (ast_expression*)ast_member_new(ctx, exprs[0], 0, NULL);
863 out->expression.node.keep = false;
864 ((ast_member*)out)->rvalue = true;
866 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.x));
868 else if (!vec.x && !vec.z) { /* v * '0 n 0' */
869 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
870 out = (ast_expression*)ast_member_new(ctx, exprs[0], 1, NULL);
871 out->expression.node.keep = false;
872 ((ast_member*)out)->rvalue = true;
874 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.y));
876 else if (!vec.x && !vec.y) { /* v * '0 n 0' */
877 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
878 out = (ast_expression*)ast_member_new(ctx, exprs[0], 2, NULL);
879 out->expression.node.keep = false;
880 ((ast_member*)out)->rvalue = true;
882 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.z));
885 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
888 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
892 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
893 type_name[exprs[1]->expression.vtype],
894 type_name[exprs[0]->expression.vtype]);
899 if (NotSameType(TYPE_FLOAT)) {
900 parseerror(parser, "invalid types used in expression: cannot divide types %s and %s",
901 type_name[exprs[0]->expression.vtype],
902 type_name[exprs[1]->expression.vtype]);
905 if (CanConstFold(exprs[0], exprs[1]))
906 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
908 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
912 parseerror(parser, "qc does not have a modulo operator");
916 if (NotSameType(TYPE_FLOAT)) {
917 parseerror(parser, "invalid types used in expression: cannot perform bit operations between types %s and %s",
918 type_name[exprs[0]->expression.vtype],
919 type_name[exprs[1]->expression.vtype]);
922 if (CanConstFold(exprs[0], exprs[1]))
923 out = (ast_expression*)parser_const_float(parser,
924 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
925 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
927 out = (ast_expression*)ast_binary_new(ctx,
928 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
932 compile_error(ast_ctx(exprs[0]), "Not Yet Implemented: bit-xor via ^");
937 if (CanConstFold(exprs[0], exprs[1]) && ! NotSameType(TYPE_FLOAT)) {
938 if (op->id == opid2('<','<'))
939 out = (ast_expression*)parser_const_float(parser, (double)((int)(ConstF(0)) << (int)(ConstF(1))));
941 out = (ast_expression*)parser_const_float(parser, (double)((int)(ConstF(0)) >> (int)(ConstF(1))));
944 case opid3('<','<','='):
945 case opid3('>','>','='):
946 compile_error(ast_ctx(exprs[0]), "Not Yet Implemented: bit-shifts");
950 generated_op += 1; /* INSTR_OR */
952 generated_op += INSTR_AND;
954 if (NotSameType(TYPE_FLOAT)) {
955 parseerror(parser, "invalid types used in expression: cannot perform logical operations between types %s and %s",
956 type_name[exprs[0]->expression.vtype],
957 type_name[exprs[1]->expression.vtype]);
958 parseerror(parser, "TODO: logical ops for arbitrary types using INSTR_NOT");
959 parseerror(parser, "TODO: optional early out");
963 if (CanConstFold(exprs[0], exprs[1]))
965 if (OPTS_FLAG(PERL_LOGIC)) {
966 if (immediate_is_true(ctx, asvalue[0]))
970 out = (ast_expression*)parser_const_float(parser,
971 ( (generated_op == INSTR_OR)
972 ? (immediate_is_true(ctx, asvalue[0]) || immediate_is_true(ctx, asvalue[1]))
973 : (immediate_is_true(ctx, asvalue[0]) && immediate_is_true(ctx, asvalue[1])) )
978 if (OPTS_FLAG(PERL_LOGIC) && !ast_compare_type(exprs[0], exprs[1])) {
979 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
980 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
981 parseerror(parser, "invalid types for logical operation with -fperl-logic: %s and %s", ty1, ty2);
984 for (i = 0; i < 2; ++i) {
985 if (OPTS_FLAG(CORRECT_LOGIC) && exprs[i]->expression.vtype == TYPE_VECTOR) {
986 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[i]);
988 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
990 exprs[i] = out; out = NULL;
991 if (OPTS_FLAG(PERL_LOGIC)) {
992 /* here we want to keep the right expressions' type */
996 else if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && exprs[i]->expression.vtype == TYPE_STRING) {
997 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[i]);
999 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
1001 exprs[i] = out; out = NULL;
1002 if (OPTS_FLAG(PERL_LOGIC)) {
1003 /* here we want to keep the right expressions' type */
1008 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
1012 case opid2('?',':'):
1013 if (vec_last(parser->pot) != POT_TERNARY2) {
1014 parseerror(parser, "mismatched parenthesis/ternary");
1017 vec_pop(parser->pot);
1018 if (!ast_compare_type(exprs[1], exprs[2])) {
1019 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
1020 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
1021 parseerror(parser, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
1024 if (CanConstFold1(exprs[0]))
1025 out = (immediate_is_true(ctx, asvalue[0]) ? exprs[1] : exprs[2]);
1027 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
1031 generated_op += 1; /* INSTR_GT */
1033 generated_op += 1; /* INSTR_LT */
1034 case opid2('>', '='):
1035 generated_op += 1; /* INSTR_GE */
1036 case opid2('<', '='):
1037 generated_op += INSTR_LE;
1038 if (NotSameType(TYPE_FLOAT)) {
1039 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
1040 type_name[exprs[0]->expression.vtype],
1041 type_name[exprs[1]->expression.vtype]);
1044 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
1046 case opid2('!', '='):
1047 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
1048 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
1049 type_name[exprs[0]->expression.vtype],
1050 type_name[exprs[1]->expression.vtype]);
1053 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
1055 case opid2('=', '='):
1056 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
1057 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
1058 type_name[exprs[0]->expression.vtype],
1059 type_name[exprs[1]->expression.vtype]);
1062 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
1066 if (ast_istype(exprs[0], ast_entfield)) {
1067 ast_expression *field = ((ast_entfield*)exprs[0])->field;
1068 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1069 exprs[0]->expression.vtype == TYPE_FIELD &&
1070 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
1072 assignop = type_storep_instr[TYPE_VECTOR];
1075 assignop = type_storep_instr[exprs[0]->expression.vtype];
1076 if (assignop == AINSTR_END || !ast_compare_type(field->expression.next, exprs[1]))
1078 ast_type_to_string(field->expression.next, ty1, sizeof(ty1));
1079 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1080 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1081 field->expression.next->expression.vtype == TYPE_FUNCTION &&
1082 exprs[1]->expression.vtype == TYPE_FUNCTION)
1084 (void)!parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
1085 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1088 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1093 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1094 exprs[0]->expression.vtype == TYPE_FIELD &&
1095 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
1097 assignop = type_store_instr[TYPE_VECTOR];
1100 assignop = type_store_instr[exprs[0]->expression.vtype];
1103 if (assignop == AINSTR_END) {
1104 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1105 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1106 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1108 else if (!ast_compare_type(exprs[0], exprs[1]))
1110 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1111 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1112 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1113 exprs[0]->expression.vtype == TYPE_FUNCTION &&
1114 exprs[1]->expression.vtype == TYPE_FUNCTION)
1116 (void)!parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
1117 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1120 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1123 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1124 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1126 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
1128 case opid3('+','+','P'):
1129 case opid3('-','-','P'):
1131 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1132 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1133 parseerror(parser, "invalid type for prefix increment: %s", ty1);
1136 if (op->id == opid3('+','+','P'))
1137 addop = INSTR_ADD_F;
1139 addop = INSTR_SUB_F;
1140 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1141 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1143 if (ast_istype(exprs[0], ast_entfield)) {
1144 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1146 (ast_expression*)parser_const_float_1(parser));
1148 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1150 (ast_expression*)parser_const_float_1(parser));
1153 case opid3('S','+','+'):
1154 case opid3('S','-','-'):
1156 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1157 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1158 parseerror(parser, "invalid type for suffix increment: %s", ty1);
1161 if (op->id == opid3('S','+','+')) {
1162 addop = INSTR_ADD_F;
1163 subop = INSTR_SUB_F;
1165 addop = INSTR_SUB_F;
1166 subop = INSTR_ADD_F;
1168 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1169 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1171 if (ast_istype(exprs[0], ast_entfield)) {
1172 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1174 (ast_expression*)parser_const_float_1(parser));
1176 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1178 (ast_expression*)parser_const_float_1(parser));
1182 out = (ast_expression*)ast_binary_new(ctx, subop,
1184 (ast_expression*)parser_const_float_1(parser));
1186 case opid2('+','='):
1187 case opid2('-','='):
1188 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
1189 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
1191 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1192 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1193 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1197 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1198 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1200 if (ast_istype(exprs[0], ast_entfield))
1201 assignop = type_storep_instr[exprs[0]->expression.vtype];
1203 assignop = type_store_instr[exprs[0]->expression.vtype];
1204 switch (exprs[0]->expression.vtype) {
1206 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1207 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
1208 exprs[0], exprs[1]);
1211 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1212 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1213 exprs[0], exprs[1]);
1216 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1217 type_name[exprs[0]->expression.vtype],
1218 type_name[exprs[1]->expression.vtype]);
1222 case opid2('*','='):
1223 case opid2('/','='):
1224 if (exprs[1]->expression.vtype != TYPE_FLOAT ||
1225 !(exprs[0]->expression.vtype == TYPE_FLOAT ||
1226 exprs[0]->expression.vtype == TYPE_VECTOR))
1228 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1229 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1230 parseerror(parser, "invalid types used in expression: %s and %s",
1234 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1235 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1237 if (ast_istype(exprs[0], ast_entfield))
1238 assignop = type_storep_instr[exprs[0]->expression.vtype];
1240 assignop = type_store_instr[exprs[0]->expression.vtype];
1241 switch (exprs[0]->expression.vtype) {
1243 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1244 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1245 exprs[0], exprs[1]);
1248 if (op->id == opid2('*','=')) {
1249 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1250 exprs[0], exprs[1]);
1252 /* there's no DIV_VF */
1253 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
1254 (ast_expression*)parser_const_float_1(parser),
1258 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1263 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1264 type_name[exprs[0]->expression.vtype],
1265 type_name[exprs[1]->expression.vtype]);
1269 case opid2('&','='):
1270 case opid2('|','='):
1271 if (NotSameType(TYPE_FLOAT)) {
1272 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1273 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1274 parseerror(parser, "invalid types used in expression: %s and %s",
1278 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1279 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1281 if (ast_istype(exprs[0], ast_entfield))
1282 assignop = type_storep_instr[exprs[0]->expression.vtype];
1284 assignop = type_store_instr[exprs[0]->expression.vtype];
1285 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1286 (op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1287 exprs[0], exprs[1]);
1289 case opid3('&','~','='):
1290 /* This is like: a &= ~(b);
1291 * But QC has no bitwise-not, so we implement it as
1294 if (NotSameType(TYPE_FLOAT)) {
1295 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1296 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1297 parseerror(parser, "invalid types used in expression: %s and %s",
1301 if (ast_istype(exprs[0], ast_entfield))
1302 assignop = type_storep_instr[exprs[0]->expression.vtype];
1304 assignop = type_store_instr[exprs[0]->expression.vtype];
1305 out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1308 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1309 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1311 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1312 asbinstore->keep_dest = true;
1313 out = (ast_expression*)asbinstore;
1319 parseerror(parser, "failed to apply operand %s", op->op);
1323 DEBUGSHUNTDO(con_out("applied %s\n", op->op));
1324 vec_push(sy->out, syexp(ctx, out));
1328 static bool parser_close_call(parser_t *parser, shunt *sy)
1330 /* was a function call */
1331 ast_expression *fun;
1337 vec_shrinkby(sy->ops, 1);
1338 fid = sy->ops[vec_size(sy->ops)].off;
1340 /* out[fid] is the function
1341 * everything above is parameters...
1342 * 0 params = nothing
1343 * 1 params = ast_expression
1347 if (vec_size(sy->out) < 1 || vec_size(sy->out) <= fid) {
1348 parseerror(parser, "internal error: function call needs function and parameter list...");
1352 fun = sy->out[fid].out;
1354 if (fun == intrinsic_debug_typestring) {
1356 if (fid+2 != vec_size(sy->out) ||
1357 vec_last(sy->out).block)
1359 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1362 ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
1363 ast_unref(vec_last(sy->out).out);
1364 sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
1365 (ast_expression*)parser_const_string(parser, ty, false));
1366 vec_shrinkby(sy->out, 1);
1370 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1372 parseerror(parser, "internal error: failed to create ast_call node");
1376 if (fid+1 == vec_size(sy->out)) {
1379 } else if (fid+2 == vec_size(sy->out)) {
1381 vec_shrinkby(sy->out, 1);
1382 params = sy->out[vec_size(sy->out)].block;
1386 vec_push(call->params, sy->out[vec_size(sy->out)].out);
1388 paramcount = vec_size(params->exprs);
1389 call->params = params->exprs;
1390 params->exprs = NULL;
1393 (void)!ast_call_check_types(call);
1395 parseerror(parser, "invalid function call");
1399 /* overwrite fid, the function, with a call */
1400 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1402 if (fun->expression.vtype != TYPE_FUNCTION) {
1403 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
1407 if (!fun->expression.next) {
1408 parseerror(parser, "could not determine function return type");
1411 ast_value *fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1413 if (fun->expression.flags & AST_FLAG_DEPRECATED) {
1415 return !parsewarning(parser, WARN_DEPRECATED,
1416 "call to function (which is marked deprecated)\n",
1417 "-> it has been declared here: %s:%i",
1418 ast_ctx(fun).file, ast_ctx(fun).line);
1421 return !parsewarning(parser, WARN_DEPRECATED,
1422 "call to `%s` (which is marked deprecated)\n"
1423 "-> `%s` declared here: %s:%i",
1424 fval->name, fval->name, ast_ctx(fun).file, ast_ctx(fun).line);
1426 return !parsewarning(parser, WARN_DEPRECATED,
1427 "call to `%s` (deprecated: %s)\n"
1428 "-> `%s` declared here: %s:%i",
1429 fval->name, fval->desc, fval->name, ast_ctx(fun).file,
1433 if (vec_size(fun->expression.params) != paramcount &&
1434 !((fun->expression.flags & AST_FLAG_VARIADIC) &&
1435 vec_size(fun->expression.params) < paramcount))
1437 const char *fewmany = (vec_size(fun->expression.params) > paramcount) ? "few" : "many";
1439 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1440 "too %s parameters for call to %s: expected %i, got %i\n"
1441 " -> `%s` has been declared here: %s:%i",
1442 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1443 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1445 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1446 "too %s parameters for function call: expected %i, got %i\n"
1447 " -> it has been declared here: %s:%i",
1448 fewmany, (int)vec_size(fun->expression.params), (int)paramcount,
1449 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1456 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
1458 if (!vec_size(sy->ops)) {
1459 parseerror(parser, "unmatched closing paren");
1462 /* this would for bit a + (x) because there are no operators inside (x)
1463 if (sy->ops[vec_size(sy->ops)-1].paren == 1) {
1464 parseerror(parser, "empty parenthesis expression");
1468 while (vec_size(sy->ops)) {
1469 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_FUNC) {
1470 if (!parser_close_call(parser, sy))
1474 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_EXPR) {
1475 vec_shrinkby(sy->ops, 1);
1476 return !functions_only;
1478 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_INDEX) {
1481 /* pop off the parenthesis */
1482 vec_shrinkby(sy->ops, 1);
1483 /* then apply the index operator */
1484 if (!parser_sy_apply_operator(parser, sy))
1488 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_TERNARY) {
1491 if (vec_last(parser->pot) != POT_TERNARY1) {
1492 parseerror(parser, "mismatched colon in ternary expression (missing closing paren?)");
1495 vec_last(parser->pot) = POT_TERNARY2;
1496 /* pop off the parenthesis */
1497 vec_shrinkby(sy->ops, 1);
1500 if (!parser_sy_apply_operator(parser, sy))
1506 static void parser_reclassify_token(parser_t *parser)
1509 for (i = 0; i < operator_count; ++i) {
1510 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1511 parser->tok = TOKEN_OPERATOR;
1517 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels)
1519 ast_expression *expr = NULL;
1521 bool wantop = false;
1522 bool gotmemberof = false;
1523 /* only warn once about an assignment in a truth value because the current code
1524 * would trigger twice on: if(a = b && ...), once for the if-truth-value, once for the && part
1526 bool warn_truthvalue = true;
1528 /* count the parens because an if starts with one, so the
1529 * end of a condition is an unmatched closing paren
1537 parser->lex->flags.noops = false;
1539 parser_reclassify_token(parser);
1544 gotmemberof = false;
1546 parser->memberof = 0;
1548 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1549 parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "_"))
1551 /* a translatable string */
1555 parseerror(parser, "expected operator or end of statement, got constant");
1559 parser->lex->flags.noops = true;
1560 if (!parser_next(parser) || parser->tok != '(') {
1561 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1564 parser->lex->flags.noops = false;
1565 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1566 parseerror(parser, "expected a constant string in translatable-string extension");
1569 val = parser_const_string(parser, parser_tokval(parser), true);
1573 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1574 DEBUGSHUNTDO(con_out("push string\n"));
1576 if (!parser_next(parser) || parser->tok != ')') {
1577 parseerror(parser, "expected closing paren after translatable string");
1581 else if (parser->tok == TOKEN_IDENT)
1583 ast_expression *var;
1585 parseerror(parser, "expected operator or end of statement");
1590 if (opts.standard == COMPILER_GMQCC)
1592 if (parser->memberof == TYPE_ENTITY) {
1593 /* still get vars first since there could be a fieldpointer */
1594 var = parser_find_var(parser, parser_tokval(parser));
1596 var = parser_find_field(parser, parser_tokval(parser));
1598 else if (parser->memberof == TYPE_VECTOR)
1600 parseerror(parser, "TODO: implement effective vector member access");
1603 else if (parser->memberof) {
1604 parseerror(parser, "namespace for member not found");
1608 var = parser_find_var(parser, parser_tokval(parser));
1610 var = parser_find_var(parser, parser_tokval(parser));
1612 var = parser_find_field(parser, parser_tokval(parser));
1614 if (!var && with_labels) {
1615 var = (ast_expression*)parser_find_label(parser, parser_tokval(parser));
1617 ast_label *lbl = ast_label_new(parser_ctx(parser), parser_tokval(parser), true);
1618 var = (ast_expression*)lbl;
1619 vec_push(parser->labels, lbl);
1624 if (!strcmp(parser_tokval(parser), "__builtin_debug_typestring")) {
1625 var = (ast_expression*)intrinsic_debug_typestring;
1630 char *correct = NULL;
1633 * sometimes people use preprocessing predefs without enabling them
1634 * i've done this thousands of times already myself. Lets check for
1635 * it in the predef table. And diagnose it better :)
1637 if (!OPTS_FLAG(FTEPP_PREDEFS)) {
1638 for (i = 0; i < sizeof(ftepp_predefs)/sizeof(*ftepp_predefs); i++) {
1639 if (!strcmp(ftepp_predefs[i].name, parser_tokval(parser))) {
1640 parseerror(parser, "unexpected ident: %s (use -fftepp-predef to enable pre-defined macros)", parser_tokval(parser));
1647 * TODO: determine the best score for the identifier: be it
1648 * a variable, a field.
1650 * We should also consider adding correction tables for
1651 * other things as well.
1653 if (OPTS_FLAG(ENHANCED_DIAGNOSTICS)) {
1655 correct_init(&corr);
1657 for (i = 0; i < vec_size(parser->correct_variables); i++) {
1658 correct = correct_str(&corr, parser->correct_variables[i], parser_tokval(parser));
1659 if (strcmp(correct, parser_tokval(parser))) {
1661 } else if (correct) {
1666 correct_free(&corr);
1669 parseerror(parser, "unexpected ident: %s (did you mean %s?)", parser_tokval(parser), correct);
1674 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1680 if (ast_istype(var, ast_value)) {
1681 ((ast_value*)var)->uses++;
1683 else if (ast_istype(var, ast_member)) {
1684 ast_member *mem = (ast_member*)var;
1685 if (ast_istype(mem->owner, ast_value))
1686 ((ast_value*)(mem->owner))->uses++;
1689 vec_push(sy.out, syexp(parser_ctx(parser), var));
1690 DEBUGSHUNTDO(con_out("push %s\n", parser_tokval(parser)));
1692 else if (parser->tok == TOKEN_FLOATCONST) {
1695 parseerror(parser, "expected operator or end of statement, got constant");
1699 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1702 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1703 DEBUGSHUNTDO(con_out("push %g\n", parser_token(parser)->constval.f));
1705 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1708 parseerror(parser, "expected operator or end of statement, got constant");
1712 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1715 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1716 DEBUGSHUNTDO(con_out("push %i\n", parser_token(parser)->constval.i));
1718 else if (parser->tok == TOKEN_STRINGCONST) {
1721 parseerror(parser, "expected operator or end of statement, got constant");
1725 val = parser_const_string(parser, parser_tokval(parser), false);
1728 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1729 DEBUGSHUNTDO(con_out("push string\n"));
1731 else if (parser->tok == TOKEN_VECTORCONST) {
1734 parseerror(parser, "expected operator or end of statement, got constant");
1738 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1741 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1742 DEBUGSHUNTDO(con_out("push '%g %g %g'\n",
1743 parser_token(parser)->constval.v.x,
1744 parser_token(parser)->constval.v.y,
1745 parser_token(parser)->constval.v.z));
1747 else if (parser->tok == '(') {
1748 parseerror(parser, "internal error: '(' should be classified as operator");
1751 else if (parser->tok == '[') {
1752 parseerror(parser, "internal error: '[' should be classified as operator");
1755 else if (parser->tok == ')') {
1757 DEBUGSHUNTDO(con_out("do[op] )\n"));
1761 /* we do expect an operator next */
1762 /* closing an opening paren */
1763 if (!parser_close_paren(parser, &sy, false))
1765 if (vec_last(parser->pot) != POT_PAREN) {
1766 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1769 vec_pop(parser->pot);
1771 DEBUGSHUNTDO(con_out("do[nop] )\n"));
1775 /* allowed for function calls */
1776 if (!parser_close_paren(parser, &sy, true))
1778 if (vec_last(parser->pot) != POT_PAREN) {
1779 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1782 vec_pop(parser->pot);
1786 else if (parser->tok == ']') {
1788 parseerror(parser, "operand expected");
1792 if (!parser_close_paren(parser, &sy, false))
1794 if (vec_last(parser->pot) != POT_PAREN) {
1795 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1798 vec_pop(parser->pot);
1801 else if (parser->tok == TOKEN_TYPENAME) {
1802 parseerror(parser, "unexpected typename");
1805 else if (parser->tok != TOKEN_OPERATOR) {
1807 parseerror(parser, "expected operator or end of statement");
1814 /* classify the operator */
1815 const oper_info *op;
1816 const oper_info *olast = NULL;
1818 for (o = 0; o < operator_count; ++o) {
1819 if (((!(operators[o].flags & OP_PREFIX) == !!wantop)) &&
1820 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1821 !strcmp(parser_tokval(parser), operators[o].op))
1826 if (o == operator_count) {
1827 /* no operator found... must be the end of the statement */
1830 /* found an operator */
1833 /* when declaring variables, a comma starts a new variable */
1834 if (op->id == opid1(',') && !parens && stopatcomma) {
1835 /* fixup the token */
1840 /* a colon without a pervious question mark cannot be a ternary */
1841 if (!ternaries && op->id == opid2(':','?')) {
1846 if (op->id == opid1(',')) {
1847 if (vec_size(parser->pot) && vec_last(parser->pot) == POT_TERNARY2) {
1848 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
1852 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1853 olast = &operators[vec_last(sy.ops).etype-1];
1855 #define IsAssignOp(x) (\
1856 (x) == opid1('=') || \
1857 (x) == opid2('+','=') || \
1858 (x) == opid2('-','=') || \
1859 (x) == opid2('*','=') || \
1860 (x) == opid2('/','=') || \
1861 (x) == opid2('%','=') || \
1862 (x) == opid2('&','=') || \
1863 (x) == opid2('|','=') || \
1864 (x) == opid3('&','~','=') \
1866 if (warn_truthvalue) {
1867 if ( (olast && IsAssignOp(olast->id) && (op->id == opid2('&','&') || op->id == opid2('|','|'))) ||
1868 (olast && IsAssignOp(op->id) && (olast->id == opid2('&','&') || olast->id == opid2('|','|'))) ||
1869 (truthvalue && !vec_size(parser->pot) && IsAssignOp(op->id))
1872 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around assignment used as truth value");
1873 warn_truthvalue = false;
1878 (op->prec < olast->prec) ||
1879 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1881 if (!parser_sy_apply_operator(parser, &sy))
1883 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1884 olast = &operators[vec_last(sy.ops).etype-1];
1889 if (op->id == opid1('.') && opts.standard == COMPILER_GMQCC) {
1890 /* for gmqcc standard: open up the namespace of the previous type */
1891 ast_expression *prevex = vec_last(sy.out).out;
1893 parseerror(parser, "unexpected member operator");
1896 if (prevex->expression.vtype == TYPE_ENTITY)
1897 parser->memberof = TYPE_ENTITY;
1898 else if (prevex->expression.vtype == TYPE_VECTOR)
1899 parser->memberof = TYPE_VECTOR;
1901 parseerror(parser, "type error: type has no members");
1907 if (op->id == opid1('(')) {
1909 size_t sycount = vec_size(sy.out);
1910 DEBUGSHUNTDO(con_out("push [op] (\n"));
1911 ++parens; vec_push(parser->pot, POT_PAREN);
1912 /* we expected an operator, this is the function-call operator */
1913 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_FUNC, sycount-1));
1915 ++parens; vec_push(parser->pot, POT_PAREN);
1916 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_EXPR, 0));
1917 DEBUGSHUNTDO(con_out("push [nop] (\n"));
1920 } else if (op->id == opid1('[')) {
1922 parseerror(parser, "unexpected array subscript");
1925 ++parens; vec_push(parser->pot, POT_PAREN);
1926 /* push both the operator and the paren, this makes life easier */
1927 vec_push(sy.ops, syop(parser_ctx(parser), op));
1928 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_INDEX, 0));
1930 } else if (op->id == opid2('?',':')) {
1931 vec_push(sy.ops, syop(parser_ctx(parser), op));
1932 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_TERNARY, 0));
1935 vec_push(parser->pot, POT_TERNARY1);
1936 } else if (op->id == opid2(':','?')) {
1937 if (!vec_size(parser->pot)) {
1938 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1941 if (vec_last(parser->pot) != POT_TERNARY1) {
1942 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1945 if (!parser_close_paren(parser, &sy, false))
1947 vec_push(sy.ops, syop(parser_ctx(parser), op));
1951 DEBUGSHUNTDO(con_out("push operator %s\n", op->op));
1952 vec_push(sy.ops, syop(parser_ctx(parser), op));
1953 wantop = !!(op->flags & OP_SUFFIX);
1956 if (!parser_next(parser)) {
1959 if (parser->tok == ';' ||
1960 (!parens && (parser->tok == ']' || parser->tok == ')')))
1966 while (vec_size(sy.ops)) {
1967 if (!parser_sy_apply_operator(parser, &sy))
1971 parser->lex->flags.noops = true;
1972 if (!vec_size(sy.out)) {
1973 parseerror(parser, "empty expression");
1976 expr = sy.out[0].out;
1979 DEBUGSHUNTDO(con_out("shunt done\n"));
1980 if (vec_size(parser->pot)) {
1981 parseerror(parser, "internal error: vec_size(parser->pot) = %lu", (unsigned long)vec_size(parser->pot));
1984 vec_free(parser->pot);
1988 parser->lex->flags.noops = true;
1994 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels)
1996 ast_expression *e = parse_expression_leave(parser, stopatcomma, false, with_labels);
1999 if (parser->tok != ';') {
2000 parseerror(parser, "semicolon expected after expression");
2004 if (!parser_next(parser)) {
2011 static void parser_enterblock(parser_t *parser)
2013 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
2014 vec_push(parser->_blocklocals, vec_size(parser->_locals));
2015 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
2016 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
2017 vec_push(parser->_block_ctx, parser_ctx(parser));
2020 vec_push(parser->correct_variables, correct_trie_new());
2021 vec_push(parser->correct_variables_score, NULL);
2024 static bool parser_leaveblock(parser_t *parser)
2027 size_t locals, typedefs;
2029 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
2030 parseerror(parser, "internal error: parser_leaveblock with no block");
2034 util_htdel(vec_last(parser->variables));
2035 correct_del(vec_last(parser->correct_variables), vec_last(parser->correct_variables_score));
2037 vec_pop(parser->variables);
2038 vec_pop(parser->correct_variables);
2039 vec_pop(parser->correct_variables_score);
2040 if (!vec_size(parser->_blocklocals)) {
2041 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
2045 locals = vec_last(parser->_blocklocals);
2046 vec_pop(parser->_blocklocals);
2047 while (vec_size(parser->_locals) != locals) {
2048 ast_expression *e = vec_last(parser->_locals);
2049 ast_value *v = (ast_value*)e;
2050 vec_pop(parser->_locals);
2051 if (ast_istype(e, ast_value) && !v->uses) {
2052 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name))
2057 typedefs = vec_last(parser->_blocktypedefs);
2058 while (vec_size(parser->_typedefs) != typedefs) {
2059 ast_delete(vec_last(parser->_typedefs));
2060 vec_pop(parser->_typedefs);
2062 util_htdel(vec_last(parser->typedefs));
2063 vec_pop(parser->typedefs);
2065 vec_pop(parser->_block_ctx);
2070 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
2072 vec_push(parser->_locals, e);
2073 util_htset(vec_last(parser->variables), name, (void*)e);
2077 vec_last(parser->correct_variables),
2078 &vec_last(parser->correct_variables_score),
2083 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e)
2085 vec_push(parser->globals, e);
2086 util_htset(parser->htglobals, name, e);
2090 parser->correct_variables[0],
2091 &parser->correct_variables_score[0],
2096 static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
2100 ast_expression *prev;
2102 if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->expression.vtype == TYPE_STRING)
2105 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
2108 parseerror(parser, "internal error: failed to process condition");
2113 else if (OPTS_FLAG(CORRECT_LOGIC) && cond->expression.vtype == TYPE_VECTOR)
2115 /* vector types need to be cast to true booleans */
2116 ast_binary *bin = (ast_binary*)cond;
2117 if (!OPTS_FLAG(PERL_LOGIC) || !ast_istype(cond, ast_binary) || !(bin->op == INSTR_AND || bin->op == INSTR_OR))
2119 /* in perl-logic, AND and OR take care of the -fcorrect-logic */
2121 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_V, cond);
2124 parseerror(parser, "internal error: failed to process condition");
2131 unary = (ast_unary*)cond;
2132 while (ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F)
2134 cond = unary->operand;
2135 unary->operand = NULL;
2138 unary = (ast_unary*)cond;
2142 parseerror(parser, "internal error: failed to process condition");
2144 if (ifnot) *_ifnot = !*_ifnot;
2148 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
2151 ast_expression *cond, *ontrue = NULL, *onfalse = NULL;
2154 lex_ctx ctx = parser_ctx(parser);
2156 (void)block; /* not touching */
2158 /* skip the 'if', parse an optional 'not' and check for an opening paren */
2159 if (!parser_next(parser)) {
2160 parseerror(parser, "expected condition or 'not'");
2163 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
2165 if (!parser_next(parser)) {
2166 parseerror(parser, "expected condition in parenthesis");
2170 if (parser->tok != '(') {
2171 parseerror(parser, "expected 'if' condition in parenthesis");
2174 /* parse into the expression */
2175 if (!parser_next(parser)) {
2176 parseerror(parser, "expected 'if' condition after opening paren");
2179 /* parse the condition */
2180 cond = parse_expression_leave(parser, false, true, false);
2184 if (parser->tok != ')') {
2185 parseerror(parser, "expected closing paren after 'if' condition");
2189 /* parse into the 'then' branch */
2190 if (!parser_next(parser)) {
2191 parseerror(parser, "expected statement for on-true branch of 'if'");
2195 if (!parse_statement_or_block(parser, &ontrue)) {
2200 ontrue = (ast_expression*)ast_block_new(parser_ctx(parser));
2201 /* check for an else */
2202 if (!strcmp(parser_tokval(parser), "else")) {
2203 /* parse into the 'else' branch */
2204 if (!parser_next(parser)) {
2205 parseerror(parser, "expected on-false branch after 'else'");
2210 if (!parse_statement_or_block(parser, &onfalse)) {
2217 cond = process_condition(parser, cond, &ifnot);
2219 if (ontrue) ast_delete(ontrue);
2220 if (onfalse) ast_delete(onfalse);
2225 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
2227 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
2228 *out = (ast_expression*)ifthen;
2232 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out);
2233 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
2238 /* skip the 'while' and get the body */
2239 if (!parser_next(parser)) {
2240 if (OPTS_FLAG(LOOP_LABELS))
2241 parseerror(parser, "expected loop label or 'while' condition in parenthesis");
2243 parseerror(parser, "expected 'while' condition in parenthesis");
2247 if (parser->tok == ':') {
2248 if (!OPTS_FLAG(LOOP_LABELS))
2249 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2250 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2251 parseerror(parser, "expected loop label");
2254 label = util_strdup(parser_tokval(parser));
2255 if (!parser_next(parser)) {
2257 parseerror(parser, "expected 'while' condition in parenthesis");
2262 if (parser->tok != '(') {
2263 parseerror(parser, "expected 'while' condition in parenthesis");
2267 vec_push(parser->breaks, label);
2268 vec_push(parser->continues, label);
2270 rv = parse_while_go(parser, block, out);
2273 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2274 parseerror(parser, "internal error: label stack corrupted");
2280 vec_pop(parser->breaks);
2281 vec_pop(parser->continues);
2286 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out)
2289 ast_expression *cond, *ontrue;
2293 lex_ctx ctx = parser_ctx(parser);
2295 (void)block; /* not touching */
2297 /* parse into the expression */
2298 if (!parser_next(parser)) {
2299 parseerror(parser, "expected 'while' condition after opening paren");
2302 /* parse the condition */
2303 cond = parse_expression_leave(parser, false, true, false);
2307 if (parser->tok != ')') {
2308 parseerror(parser, "expected closing paren after 'while' condition");
2312 /* parse into the 'then' branch */
2313 if (!parser_next(parser)) {
2314 parseerror(parser, "expected while-loop body");
2318 if (!parse_statement_or_block(parser, &ontrue)) {
2323 cond = process_condition(parser, cond, &ifnot);
2328 aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue);
2329 *out = (ast_expression*)aloop;
2333 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out);
2334 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2339 /* skip the 'do' and get the body */
2340 if (!parser_next(parser)) {
2341 if (OPTS_FLAG(LOOP_LABELS))
2342 parseerror(parser, "expected loop label or body");
2344 parseerror(parser, "expected loop body");
2348 if (parser->tok == ':') {
2349 if (!OPTS_FLAG(LOOP_LABELS))
2350 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2351 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2352 parseerror(parser, "expected loop label");
2355 label = util_strdup(parser_tokval(parser));
2356 if (!parser_next(parser)) {
2358 parseerror(parser, "expected loop body");
2363 vec_push(parser->breaks, label);
2364 vec_push(parser->continues, label);
2366 rv = parse_dowhile_go(parser, block, out);
2369 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2370 parseerror(parser, "internal error: label stack corrupted");
2376 vec_pop(parser->breaks);
2377 vec_pop(parser->continues);
2382 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out)
2385 ast_expression *cond, *ontrue;
2389 lex_ctx ctx = parser_ctx(parser);
2391 (void)block; /* not touching */
2393 if (!parse_statement_or_block(parser, &ontrue))
2396 /* expect the "while" */
2397 if (parser->tok != TOKEN_KEYWORD ||
2398 strcmp(parser_tokval(parser), "while"))
2400 parseerror(parser, "expected 'while' and condition");
2405 /* skip the 'while' and check for opening paren */
2406 if (!parser_next(parser) || parser->tok != '(') {
2407 parseerror(parser, "expected 'while' condition in parenthesis");
2411 /* parse into the expression */
2412 if (!parser_next(parser)) {
2413 parseerror(parser, "expected 'while' condition after opening paren");
2417 /* parse the condition */
2418 cond = parse_expression_leave(parser, false, true, false);
2422 if (parser->tok != ')') {
2423 parseerror(parser, "expected closing paren after 'while' condition");
2429 if (!parser_next(parser) || parser->tok != ';') {
2430 parseerror(parser, "expected semicolon after condition");
2436 if (!parser_next(parser)) {
2437 parseerror(parser, "parse error");
2443 cond = process_condition(parser, cond, &ifnot);
2448 aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue);
2449 *out = (ast_expression*)aloop;
2453 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out);
2454 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2459 /* skip the 'for' and check for opening paren */
2460 if (!parser_next(parser)) {
2461 if (OPTS_FLAG(LOOP_LABELS))
2462 parseerror(parser, "expected loop label or 'for' expressions in parenthesis");
2464 parseerror(parser, "expected 'for' expressions in parenthesis");
2468 if (parser->tok == ':') {
2469 if (!OPTS_FLAG(LOOP_LABELS))
2470 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2471 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2472 parseerror(parser, "expected loop label");
2475 label = util_strdup(parser_tokval(parser));
2476 if (!parser_next(parser)) {
2478 parseerror(parser, "expected 'for' expressions in parenthesis");
2483 if (parser->tok != '(') {
2484 parseerror(parser, "expected 'for' expressions in parenthesis");
2488 vec_push(parser->breaks, label);
2489 vec_push(parser->continues, label);
2491 rv = parse_for_go(parser, block, out);
2494 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2495 parseerror(parser, "internal error: label stack corrupted");
2501 vec_pop(parser->breaks);
2502 vec_pop(parser->continues);
2506 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out)
2509 ast_expression *initexpr, *cond, *increment, *ontrue;
2515 lex_ctx ctx = parser_ctx(parser);
2517 parser_enterblock(parser);
2524 /* parse into the expression */
2525 if (!parser_next(parser)) {
2526 parseerror(parser, "expected 'for' initializer after opening paren");
2531 if (parser->tok == TOKEN_IDENT)
2532 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2534 if (typevar || parser->tok == TOKEN_TYPENAME) {
2536 if (opts.standard != COMPILER_GMQCC) {
2537 if (parsewarning(parser, WARN_EXTENSIONS,
2538 "current standard does not allow variable declarations in for-loop initializers"))
2542 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false, 0, NULL))
2545 else if (parser->tok != ';')
2547 initexpr = parse_expression_leave(parser, false, false, false);
2552 /* move on to condition */
2553 if (parser->tok != ';') {
2554 parseerror(parser, "expected semicolon after for-loop initializer");
2557 if (!parser_next(parser)) {
2558 parseerror(parser, "expected for-loop condition");
2562 /* parse the condition */
2563 if (parser->tok != ';') {
2564 cond = parse_expression_leave(parser, false, true, false);
2569 /* move on to incrementor */
2570 if (parser->tok != ';') {
2571 parseerror(parser, "expected semicolon after for-loop initializer");
2574 if (!parser_next(parser)) {
2575 parseerror(parser, "expected for-loop condition");
2579 /* parse the incrementor */
2580 if (parser->tok != ')') {
2581 increment = parse_expression_leave(parser, false, false, false);
2584 if (!ast_side_effects(increment)) {
2585 if (genwarning(ast_ctx(increment), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2591 if (parser->tok != ')') {
2592 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2595 /* parse into the 'then' branch */
2596 if (!parser_next(parser)) {
2597 parseerror(parser, "expected for-loop body");
2600 if (!parse_statement_or_block(parser, &ontrue))
2604 cond = process_condition(parser, cond, &ifnot);
2608 aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue);
2609 *out = (ast_expression*)aloop;
2611 if (!parser_leaveblock(parser))
2615 if (initexpr) ast_delete(initexpr);
2616 if (cond) ast_delete(cond);
2617 if (increment) ast_delete(increment);
2618 (void)!parser_leaveblock(parser);
2622 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2624 ast_expression *exp = NULL;
2625 ast_return *ret = NULL;
2626 ast_value *expected = parser->function->vtype;
2628 lex_ctx ctx = parser_ctx(parser);
2630 (void)block; /* not touching */
2632 if (!parser_next(parser)) {
2633 parseerror(parser, "expected return expression");
2637 if (parser->tok != ';') {
2638 exp = parse_expression(parser, false, false);
2642 if (exp->expression.vtype != TYPE_NIL &&
2643 exp->expression.vtype != expected->expression.next->expression.vtype)
2645 parseerror(parser, "return with invalid expression");
2648 ret = ast_return_new(ctx, exp);
2654 if (!parser_next(parser))
2655 parseerror(parser, "parse error");
2656 if (expected->expression.next->expression.vtype != TYPE_VOID) {
2657 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2659 ret = ast_return_new(ctx, NULL);
2661 *out = (ast_expression*)ret;
2665 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2668 unsigned int levels = 0;
2669 lex_ctx ctx = parser_ctx(parser);
2670 const char **loops = (is_continue ? parser->continues : parser->breaks);
2672 (void)block; /* not touching */
2673 if (!parser_next(parser)) {
2674 parseerror(parser, "expected semicolon or loop label");
2678 if (!vec_size(loops)) {
2680 parseerror(parser, "`continue` can only be used inside loops");
2682 parseerror(parser, "`break` can only be used inside loops or switches");
2685 if (parser->tok == TOKEN_IDENT) {
2686 if (!OPTS_FLAG(LOOP_LABELS))
2687 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2688 i = vec_size(loops);
2690 if (loops[i] && !strcmp(loops[i], parser_tokval(parser)))
2693 parseerror(parser, "no such loop to %s: `%s`",
2694 (is_continue ? "continue" : "break out of"),
2695 parser_tokval(parser));
2700 if (!parser_next(parser)) {
2701 parseerror(parser, "expected semicolon");
2706 if (parser->tok != ';') {
2707 parseerror(parser, "expected semicolon");
2711 if (!parser_next(parser))
2712 parseerror(parser, "parse error");
2714 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue, levels);
2718 /* returns true when it was a variable qualifier, false otherwise!
2719 * on error, cvq is set to CV_WRONG
2721 static bool parse_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *is_static, uint32_t *_flags, char **message)
2723 bool had_const = false;
2724 bool had_var = false;
2725 bool had_noref = false;
2726 bool had_attrib = false;
2727 bool had_static = false;
2732 if (parser->tok == TOKEN_ATTRIBUTE_OPEN) {
2734 /* parse an attribute */
2735 if (!parser_next(parser)) {
2736 parseerror(parser, "expected attribute after `[[`");
2740 if (!strcmp(parser_tokval(parser), "noreturn")) {
2741 flags |= AST_FLAG_NORETURN;
2742 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2743 parseerror(parser, "`noreturn` attribute has no parameters, expected `]]`");
2748 else if (!strcmp(parser_tokval(parser), "noref")) {
2750 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2751 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2756 else if (!strcmp(parser_tokval(parser), "inline")) {
2757 flags |= AST_FLAG_INLINE;
2758 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2759 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2766 else if (!strcmp(parser_tokval(parser), "deprecated") && !(flags & AST_FLAG_DEPRECATED)) {
2767 flags |= AST_FLAG_DEPRECATED;
2770 if (!parser_next(parser)) {
2771 parseerror(parser, "parse error in attribute");
2775 if (parser->tok == '(') {
2776 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
2777 parseerror(parser, "`deprecated` attribute missing parameter");
2781 *message = util_strdup(parser_tokval(parser));
2783 if (!parser_next(parser)) {
2784 parseerror(parser, "parse error in attribute");
2788 if(parser->tok != ')') {
2789 parseerror(parser, "`deprecated` attribute expected `)` after parameter");
2793 if (!parser_next(parser)) {
2794 parseerror(parser, "parse error in attribute");
2799 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2800 parseerror(parser, "`deprecated` attribute expected `]]`");
2803 if (*message) mem_d(*message);
2811 /* Skip tokens until we hit a ]] */
2812 (void)!parsewarning(parser, WARN_UNKNOWN_ATTRIBUTE, "unknown attribute starting with `%s`", parser_tokval(parser));
2813 while (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2814 if (!parser_next(parser)) {
2815 parseerror(parser, "error inside attribute");
2822 else if (!strcmp(parser_tokval(parser), "static"))
2824 else if (!strcmp(parser_tokval(parser), "const"))
2826 else if (!strcmp(parser_tokval(parser), "var"))
2828 else if (with_local && !strcmp(parser_tokval(parser), "local"))
2830 else if (!strcmp(parser_tokval(parser), "noref"))
2832 else if (!had_const && !had_var && !had_noref && !had_attrib && !had_static && !flags) {
2837 if (!parser_next(parser))
2847 *is_static = had_static;
2851 parseerror(parser, "parse error after variable qualifier");
2856 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out);
2857 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
2862 /* skip the 'while' and get the body */
2863 if (!parser_next(parser)) {
2864 if (OPTS_FLAG(LOOP_LABELS))
2865 parseerror(parser, "expected loop label or 'switch' operand in parenthesis");
2867 parseerror(parser, "expected 'switch' operand in parenthesis");
2871 if (parser->tok == ':') {
2872 if (!OPTS_FLAG(LOOP_LABELS))
2873 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2874 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2875 parseerror(parser, "expected loop label");
2878 label = util_strdup(parser_tokval(parser));
2879 if (!parser_next(parser)) {
2881 parseerror(parser, "expected 'switch' operand in parenthesis");
2886 if (parser->tok != '(') {
2887 parseerror(parser, "expected 'switch' operand in parenthesis");
2891 vec_push(parser->breaks, label);
2893 rv = parse_switch_go(parser, block, out);
2896 if (vec_last(parser->breaks) != label) {
2897 parseerror(parser, "internal error: label stack corrupted");
2903 vec_pop(parser->breaks);
2908 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out)
2910 ast_expression *operand;
2913 ast_switch *switchnode;
2914 ast_switch_case swcase;
2917 bool noref, is_static;
2918 uint32_t qflags = 0;
2920 lex_ctx ctx = parser_ctx(parser);
2922 (void)block; /* not touching */
2925 /* parse into the expression */
2926 if (!parser_next(parser)) {
2927 parseerror(parser, "expected switch operand");
2930 /* parse the operand */
2931 operand = parse_expression_leave(parser, false, false, false);
2935 switchnode = ast_switch_new(ctx, operand);
2938 if (parser->tok != ')') {
2939 ast_delete(switchnode);
2940 parseerror(parser, "expected closing paren after 'switch' operand");
2944 /* parse over the opening paren */
2945 if (!parser_next(parser) || parser->tok != '{') {
2946 ast_delete(switchnode);
2947 parseerror(parser, "expected list of cases");
2951 if (!parser_next(parser)) {
2952 ast_delete(switchnode);
2953 parseerror(parser, "expected 'case' or 'default'");
2957 /* new block; allow some variables to be declared here */
2958 parser_enterblock(parser);
2961 if (parser->tok == TOKEN_IDENT)
2962 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2963 if (typevar || parser->tok == TOKEN_TYPENAME) {
2964 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL)) {
2965 ast_delete(switchnode);
2970 if (parse_qualifiers(parser, true, &cvq, &noref, &is_static, &qflags, NULL))
2972 if (cvq == CV_WRONG) {
2973 ast_delete(switchnode);
2976 if (!parse_variable(parser, block, false, cvq, NULL, noref, is_static, qflags, NULL)) {
2977 ast_delete(switchnode);
2986 while (parser->tok != '}') {
2987 ast_block *caseblock;
2989 if (!strcmp(parser_tokval(parser), "case")) {
2990 if (!parser_next(parser)) {
2991 ast_delete(switchnode);
2992 parseerror(parser, "expected expression for case");
2995 swcase.value = parse_expression_leave(parser, false, false, false);
2996 if (!swcase.value) {
2997 ast_delete(switchnode);
2998 parseerror(parser, "expected expression for case");
3001 if (!OPTS_FLAG(RELAXED_SWITCH)) {
3002 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
3003 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
3009 else if (!strcmp(parser_tokval(parser), "default")) {
3010 swcase.value = NULL;
3011 if (!parser_next(parser)) {
3012 ast_delete(switchnode);
3013 parseerror(parser, "expected colon");
3018 ast_delete(switchnode);
3019 parseerror(parser, "expected 'case' or 'default'");
3023 /* Now the colon and body */
3024 if (parser->tok != ':') {
3025 if (swcase.value) ast_unref(swcase.value);
3026 ast_delete(switchnode);
3027 parseerror(parser, "expected colon");
3031 if (!parser_next(parser)) {
3032 if (swcase.value) ast_unref(swcase.value);
3033 ast_delete(switchnode);
3034 parseerror(parser, "expected statements or case");
3037 caseblock = ast_block_new(parser_ctx(parser));
3039 if (swcase.value) ast_unref(swcase.value);
3040 ast_delete(switchnode);
3043 swcase.code = (ast_expression*)caseblock;
3044 vec_push(switchnode->cases, swcase);
3046 ast_expression *expr;
3047 if (parser->tok == '}')
3049 if (parser->tok == TOKEN_KEYWORD) {
3050 if (!strcmp(parser_tokval(parser), "case") ||
3051 !strcmp(parser_tokval(parser), "default"))
3056 if (!parse_statement(parser, caseblock, &expr, true)) {
3057 ast_delete(switchnode);
3062 if (!ast_block_add_expr(caseblock, expr)) {
3063 ast_delete(switchnode);
3069 parser_leaveblock(parser);
3072 if (parser->tok != '}') {
3073 ast_delete(switchnode);
3074 parseerror(parser, "expected closing paren of case list");
3077 if (!parser_next(parser)) {
3078 ast_delete(switchnode);
3079 parseerror(parser, "parse error after switch");
3082 *out = (ast_expression*)switchnode;
3086 /* parse computed goto sides */
3087 static ast_expression *parse_goto_computed(parser_t *parser, ast_expression **side) {
3088 ast_expression *on_true;
3089 ast_expression *on_false;
3090 ast_expression *cond;
3095 if (ast_istype(*side, ast_ternary)) {
3096 ast_ternary *tern = (ast_ternary*)*side;
3097 on_true = parse_goto_computed(parser, &tern->on_true);
3098 on_false = parse_goto_computed(parser, &tern->on_false);
3100 if (!on_true || !on_false) {
3101 parseerror(parser, "expected label or expression in ternary");
3102 if (on_true) ast_unref(on_true);
3103 if (on_false) ast_unref(on_false);
3111 return (ast_expression*)ast_ifthen_new(parser_ctx(parser), cond, on_true, on_false);
3112 } else if (ast_istype(*side, ast_label)) {
3113 ast_goto *gt = ast_goto_new(parser_ctx(parser), ((ast_label*)*side)->name);
3114 ast_goto_set_label(gt, ((ast_label*)*side));
3116 return (ast_expression*)gt;
3121 static bool parse_goto(parser_t *parser, ast_expression **out)
3123 ast_goto *gt = NULL;
3124 ast_expression *lbl;
3126 if (!parser_next(parser))
3129 if (parser->tok != TOKEN_IDENT) {
3130 ast_expression *expression;
3132 /* could be an expression i.e computed goto :-) */
3133 if (parser->tok != '(') {
3134 parseerror(parser, "expected label name after `goto`");
3138 /* failed to parse expression for goto */
3139 if (!(expression = parse_expression(parser, false, true)) ||
3140 !(*out = parse_goto_computed(parser, &expression))) {
3141 parseerror(parser, "invalid goto expression");
3142 ast_unref(expression);
3149 /* not computed goto */
3150 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
3151 lbl = parser_find_label(parser, gt->name);
3153 if (!ast_istype(lbl, ast_label)) {
3154 parseerror(parser, "internal error: label is not an ast_label");
3158 ast_goto_set_label(gt, (ast_label*)lbl);
3161 vec_push(parser->gotos, gt);
3163 if (!parser_next(parser) || parser->tok != ';') {
3164 parseerror(parser, "semicolon expected after goto label");
3167 if (!parser_next(parser)) {
3168 parseerror(parser, "parse error after goto");
3172 *out = (ast_expression*)gt;
3176 static bool parse_skipwhite(parser_t *parser)
3179 if (!parser_next(parser))
3181 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
3182 return parser->tok < TOKEN_ERROR;
3185 static bool parse_eol(parser_t *parser)
3187 if (!parse_skipwhite(parser))
3189 return parser->tok == TOKEN_EOL;
3192 static bool parse_pragma_do(parser_t *parser)
3194 if (!parser_next(parser) ||
3195 parser->tok != TOKEN_IDENT ||
3196 strcmp(parser_tokval(parser), "pragma"))
3198 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
3201 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
3202 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
3206 if (!strcmp(parser_tokval(parser), "noref")) {
3207 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
3208 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
3211 parser->noref = !!parser_token(parser)->constval.i;
3212 if (!parse_eol(parser)) {
3213 parseerror(parser, "parse error after `noref` pragma");
3219 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
3226 static bool parse_pragma(parser_t *parser)
3229 parser->lex->flags.preprocessing = true;
3230 parser->lex->flags.mergelines = true;
3231 rv = parse_pragma_do(parser);
3232 if (parser->tok != TOKEN_EOL) {
3233 parseerror(parser, "junk after pragma");
3236 parser->lex->flags.preprocessing = false;
3237 parser->lex->flags.mergelines = false;
3238 if (!parser_next(parser)) {
3239 parseerror(parser, "parse error after pragma");
3245 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
3247 bool noref, is_static;
3249 uint32_t qflags = 0;
3250 ast_value *typevar = NULL;
3251 char *vstring = NULL;
3255 if (parser->tok == TOKEN_IDENT)
3256 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3258 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
3260 /* local variable */
3262 parseerror(parser, "cannot declare a variable from here");
3265 if (opts.standard == COMPILER_QCC) {
3266 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
3269 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL))
3273 else if (parse_qualifiers(parser, !!block, &cvq, &noref, &is_static, &qflags, &vstring))
3275 if (cvq == CV_WRONG)
3277 return parse_variable(parser, block, true, cvq, NULL, noref, is_static, qflags, vstring);
3279 else if (parser->tok == TOKEN_KEYWORD)
3281 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
3286 if (!parser_next(parser)) {
3287 parseerror(parser, "parse error after __builtin_debug_printtype");
3291 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
3293 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
3294 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
3295 if (!parser_next(parser)) {
3296 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
3302 if (!parse_statement(parser, block, out, allow_cases))
3305 con_out("__builtin_debug_printtype: got no output node\n");
3308 ast_type_to_string(*out, ty, sizeof(ty));
3309 con_out("__builtin_debug_printtype: `%s`\n", ty);
3314 else if (!strcmp(parser_tokval(parser), "return"))
3316 return parse_return(parser, block, out);
3318 else if (!strcmp(parser_tokval(parser), "if"))
3320 return parse_if(parser, block, out);
3322 else if (!strcmp(parser_tokval(parser), "while"))
3324 return parse_while(parser, block, out);
3326 else if (!strcmp(parser_tokval(parser), "do"))
3328 return parse_dowhile(parser, block, out);
3330 else if (!strcmp(parser_tokval(parser), "for"))
3332 if (opts.standard == COMPILER_QCC) {
3333 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
3336 return parse_for(parser, block, out);
3338 else if (!strcmp(parser_tokval(parser), "break"))
3340 return parse_break_continue(parser, block, out, false);
3342 else if (!strcmp(parser_tokval(parser), "continue"))
3344 return parse_break_continue(parser, block, out, true);
3346 else if (!strcmp(parser_tokval(parser), "switch"))
3348 return parse_switch(parser, block, out);
3350 else if (!strcmp(parser_tokval(parser), "case") ||
3351 !strcmp(parser_tokval(parser), "default"))
3354 parseerror(parser, "unexpected 'case' label");
3359 else if (!strcmp(parser_tokval(parser), "goto"))
3361 return parse_goto(parser, out);
3363 else if (!strcmp(parser_tokval(parser), "typedef"))
3365 if (!parser_next(parser)) {
3366 parseerror(parser, "expected type definition after 'typedef'");
3369 return parse_typedef(parser);
3371 parseerror(parser, "Unexpected keyword");
3374 else if (parser->tok == '{')
3377 inner = parse_block(parser);
3380 *out = (ast_expression*)inner;
3383 else if (parser->tok == ':')
3387 if (!parser_next(parser)) {
3388 parseerror(parser, "expected label name");
3391 if (parser->tok != TOKEN_IDENT) {
3392 parseerror(parser, "label must be an identifier");
3395 label = (ast_label*)parser_find_label(parser, parser_tokval(parser));
3397 if (!label->undefined) {
3398 parseerror(parser, "label `%s` already defined", label->name);
3401 label->undefined = false;
3404 label = ast_label_new(parser_ctx(parser), parser_tokval(parser), false);
3405 vec_push(parser->labels, label);
3407 *out = (ast_expression*)label;
3408 if (!parser_next(parser)) {
3409 parseerror(parser, "parse error after label");
3412 for (i = 0; i < vec_size(parser->gotos); ++i) {
3413 if (!strcmp(parser->gotos[i]->name, label->name)) {
3414 ast_goto_set_label(parser->gotos[i], label);
3415 vec_remove(parser->gotos, i, 1);
3421 else if (parser->tok == ';')
3423 if (!parser_next(parser)) {
3424 parseerror(parser, "parse error after empty statement");
3431 ast_expression *exp = parse_expression(parser, false, false);
3435 if (!ast_side_effects(exp)) {
3436 if (genwarning(ast_ctx(exp), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
3443 static bool parse_enum(parser_t *parser)
3446 ast_value **values = NULL;
3447 ast_value *var = NULL;
3450 ast_expression *old;
3452 if (!parser_next(parser) || parser->tok != '{') {
3453 parseerror(parser, "expected `{` after `enum` keyword");
3458 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
3459 if (parser->tok == '}') {
3460 /* allow an empty enum */
3463 parseerror(parser, "expected identifier or `}`");
3467 old = parser_find_field(parser, parser_tokval(parser));
3469 old = parser_find_global(parser, parser_tokval(parser));
3471 parseerror(parser, "value `%s` has already been declared here: %s:%i",
3472 parser_tokval(parser), ast_ctx(old).file, ast_ctx(old).line);
3476 var = ast_value_new(parser_ctx(parser), parser_tokval(parser), TYPE_FLOAT);
3477 vec_push(values, var);
3478 var->cvq = CV_CONST;
3479 var->hasvalue = true;
3480 var->constval.vfloat = num++;
3482 parser_addglobal(parser, var->name, (ast_expression*)var);
3484 if (!parser_next(parser)) {
3485 parseerror(parser, "expected `=`, `}` or comma after identifier");
3489 if (parser->tok == ',')
3491 if (parser->tok == '}')
3493 if (parser->tok != '=') {
3494 parseerror(parser, "expected `=`, `}` or comma after identifier");
3498 if (!parser_next(parser)) {
3499 parseerror(parser, "expected expression after `=`");
3503 /* We got a value! */
3504 old = parse_expression_leave(parser, true, false, false);
3505 asvalue = (ast_value*)old;
3506 if (!ast_istype(old, ast_value) || asvalue->cvq != CV_CONST || !asvalue->hasvalue) {
3507 parseerror(parser, "enumeration value for must be a constant");
3510 num = (var->constval.vfloat = asvalue->constval.vfloat) + 1;
3513 if (parser->tok != '}') {
3514 parseerror(parser, "internal error: breaking without `}`");
3518 if (!parser_next(parser) || parser->tok != ';') {
3519 parseerror(parser, "expected semicolon after enumeration");
3523 if (!parser_next(parser)) {
3524 parseerror(parser, "parse error after enumeration");
3536 static bool parse_block_into(parser_t *parser, ast_block *block)
3540 parser_enterblock(parser);
3542 if (!parser_next(parser)) { /* skip the '{' */
3543 parseerror(parser, "expected function body");
3547 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
3549 ast_expression *expr = NULL;
3550 if (parser->tok == '}')
3553 if (!parse_statement(parser, block, &expr, false)) {
3554 /* parseerror(parser, "parse error"); */
3560 if (!ast_block_add_expr(block, expr)) {
3567 if (parser->tok != '}') {
3570 (void)parser_next(parser);
3574 if (!parser_leaveblock(parser))
3576 return retval && !!block;
3579 static ast_block* parse_block(parser_t *parser)
3582 block = ast_block_new(parser_ctx(parser));
3585 if (!parse_block_into(parser, block)) {
3586 ast_block_delete(block);
3592 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
3594 if (parser->tok == '{') {
3595 *out = (ast_expression*)parse_block(parser);
3598 return parse_statement(parser, NULL, out, false);
3601 static bool create_vector_members(ast_value *var, ast_member **me)
3604 size_t len = strlen(var->name);
3606 for (i = 0; i < 3; ++i) {
3607 char *name = (char*)mem_a(len+3);
3608 memcpy(name, var->name, len);
3610 name[len+1] = 'x'+i;
3612 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
3621 do { ast_member_delete(me[--i]); } while(i);
3625 static bool parse_function_body(parser_t *parser, ast_value *var)
3627 ast_block *block = NULL;
3632 ast_expression *framenum = NULL;
3633 ast_expression *nextthink = NULL;
3634 /* None of the following have to be deleted */
3635 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
3636 ast_expression *gbl_time = NULL, *gbl_self = NULL;
3637 bool has_frame_think;
3641 has_frame_think = false;
3642 old = parser->function;
3644 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
3645 parseerror(parser, "gotos/labels leaking");
3649 if (var->expression.flags & AST_FLAG_VARIADIC) {
3650 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
3651 "variadic function with implementation will not be able to access additional parameters"))
3657 if (parser->tok == '[') {
3658 /* got a frame definition: [ framenum, nextthink ]
3659 * this translates to:
3660 * self.frame = framenum;
3661 * self.nextthink = time + 0.1;
3662 * self.think = nextthink;
3666 fld_think = parser_find_field(parser, "think");
3667 fld_nextthink = parser_find_field(parser, "nextthink");
3668 fld_frame = parser_find_field(parser, "frame");
3669 if (!fld_think || !fld_nextthink || !fld_frame) {
3670 parseerror(parser, "cannot use [frame,think] notation without the required fields");
3671 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
3674 gbl_time = parser_find_global(parser, "time");
3675 gbl_self = parser_find_global(parser, "self");
3676 if (!gbl_time || !gbl_self) {
3677 parseerror(parser, "cannot use [frame,think] notation without the required globals");
3678 parseerror(parser, "please declare the following globals: `time`, `self`");
3682 if (!parser_next(parser))
3685 framenum = parse_expression_leave(parser, true, false, false);
3687 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
3690 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
3691 ast_unref(framenum);
3692 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
3696 if (parser->tok != ',') {
3697 ast_unref(framenum);
3698 parseerror(parser, "expected comma after frame number in [frame,think] notation");
3699 parseerror(parser, "Got a %i\n", parser->tok);
3703 if (!parser_next(parser)) {
3704 ast_unref(framenum);
3708 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
3710 /* qc allows the use of not-yet-declared functions here
3711 * - this automatically creates a prototype */
3712 ast_value *thinkfunc;
3713 ast_expression *functype = fld_think->expression.next;
3715 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
3716 if (!thinkfunc || !ast_type_adopt(thinkfunc, functype)) {
3717 ast_unref(framenum);
3718 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
3722 if (!parser_next(parser)) {
3723 ast_unref(framenum);
3724 ast_delete(thinkfunc);
3728 parser_addglobal(parser, thinkfunc->name, (ast_expression*)thinkfunc);
3730 nextthink = (ast_expression*)thinkfunc;
3733 nextthink = parse_expression_leave(parser, true, false, false);
3735 ast_unref(framenum);
3736 parseerror(parser, "expected a think-function in [frame,think] notation");
3741 if (!ast_istype(nextthink, ast_value)) {
3742 parseerror(parser, "think-function in [frame,think] notation must be a constant");
3746 if (retval && parser->tok != ']') {
3747 parseerror(parser, "expected closing `]` for [frame,think] notation");
3751 if (retval && !parser_next(parser)) {
3755 if (retval && parser->tok != '{') {
3756 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
3761 ast_unref(nextthink);
3762 ast_unref(framenum);
3766 has_frame_think = true;
3769 block = ast_block_new(parser_ctx(parser));
3771 parseerror(parser, "failed to allocate block");
3772 if (has_frame_think) {
3773 ast_unref(nextthink);
3774 ast_unref(framenum);
3779 if (has_frame_think) {
3781 ast_expression *self_frame;
3782 ast_expression *self_nextthink;
3783 ast_expression *self_think;
3784 ast_expression *time_plus_1;
3785 ast_store *store_frame;
3786 ast_store *store_nextthink;
3787 ast_store *store_think;
3789 ctx = parser_ctx(parser);
3790 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
3791 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
3792 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
3794 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
3795 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
3797 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
3798 if (self_frame) ast_delete(self_frame);
3799 if (self_nextthink) ast_delete(self_nextthink);
3800 if (self_think) ast_delete(self_think);
3801 if (time_plus_1) ast_delete(time_plus_1);
3807 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
3808 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
3809 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
3812 ast_delete(self_frame);
3815 if (!store_nextthink) {
3816 ast_delete(self_nextthink);
3820 ast_delete(self_think);
3824 if (store_frame) ast_delete(store_frame);
3825 if (store_nextthink) ast_delete(store_nextthink);
3826 if (store_think) ast_delete(store_think);
3829 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
3830 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
3831 !ast_block_add_expr(block, (ast_expression*)store_think))
3838 parseerror(parser, "failed to generate code for [frame,think]");
3839 ast_unref(nextthink);
3840 ast_unref(framenum);
3846 parser_enterblock(parser);
3848 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
3850 ast_value *param = var->expression.params[parami];
3853 if (param->expression.vtype != TYPE_VECTOR &&
3854 (param->expression.vtype != TYPE_FIELD ||
3855 param->expression.next->expression.vtype != TYPE_VECTOR))
3860 if (!create_vector_members(param, me)) {
3861 ast_block_delete(block);
3865 for (e = 0; e < 3; ++e) {
3866 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
3867 ast_block_collect(block, (ast_expression*)me[e]);
3871 func = ast_function_new(ast_ctx(var), var->name, var);
3873 parseerror(parser, "failed to allocate function for `%s`", var->name);
3874 ast_block_delete(block);
3877 vec_push(parser->functions, func);
3879 parser->function = func;
3880 if (!parse_block_into(parser, block)) {
3881 ast_block_delete(block);
3885 vec_push(func->blocks, block);
3887 parser->function = old;
3888 if (!parser_leaveblock(parser))
3890 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
3891 parseerror(parser, "internal error: local scopes left");
3895 if (parser->tok == ';')
3896 return parser_next(parser);
3897 else if (opts.standard == COMPILER_QCC)
3898 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
3902 vec_pop(parser->functions);
3903 ast_function_delete(func);
3904 var->constval.vfunc = NULL;
3907 (void)!parser_leaveblock(parser);
3908 parser->function = old;
3912 static ast_expression *array_accessor_split(
3917 ast_expression *left,
3918 ast_expression *right
3924 lex_ctx ctx = ast_ctx(array);
3926 if (!left || !right) {
3927 if (left) ast_delete(left);
3928 if (right) ast_delete(right);
3932 cmp = ast_binary_new(ctx, INSTR_LT,
3933 (ast_expression*)index,
3934 (ast_expression*)parser_const_float(parser, middle));
3938 parseerror(parser, "internal error: failed to create comparison for array setter");
3942 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
3944 ast_delete(cmp); /* will delete left and right */
3945 parseerror(parser, "internal error: failed to create conditional jump for array setter");
3949 return (ast_expression*)ifthen;
3952 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
3954 lex_ctx ctx = ast_ctx(array);
3956 if (from+1 == afterend) {
3957 /* set this value */
3960 ast_array_index *subscript;
3962 int assignop = type_store_instr[value->expression.vtype];
3964 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3965 assignop = INSTR_STORE_V;
3967 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3971 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
3973 ast_delete(subscript);
3977 block = ast_block_new(ctx);
3983 if (!ast_block_add_expr(block, (ast_expression*)st)) {
3988 ret = ast_return_new(ctx, NULL);
3994 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
3999 return (ast_expression*)block;
4001 ast_expression *left, *right;
4002 size_t diff = afterend - from;
4003 size_t middle = from + diff/2;
4004 left = array_setter_node(parser, array, index, value, from, middle);
4005 right = array_setter_node(parser, array, index, value, middle, afterend);
4006 return array_accessor_split(parser, array, index, middle, left, right);
4010 static ast_expression *array_field_setter_node(
4019 lex_ctx ctx = ast_ctx(array);
4021 if (from+1 == afterend) {
4022 /* set this value */
4025 ast_entfield *entfield;
4026 ast_array_index *subscript;
4028 int assignop = type_storep_instr[value->expression.vtype];
4030 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
4031 assignop = INSTR_STOREP_V;
4033 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4037 entfield = ast_entfield_new_force(ctx,
4038 (ast_expression*)entity,
4039 (ast_expression*)subscript,
4040 (ast_expression*)subscript);
4042 ast_delete(subscript);
4046 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
4048 ast_delete(entfield);
4052 block = ast_block_new(ctx);
4058 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4063 ret = ast_return_new(ctx, NULL);
4069 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4074 return (ast_expression*)block;
4076 ast_expression *left, *right;
4077 size_t diff = afterend - from;
4078 size_t middle = from + diff/2;
4079 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
4080 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
4081 return array_accessor_split(parser, array, index, middle, left, right);
4085 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
4087 lex_ctx ctx = ast_ctx(array);
4089 if (from+1 == afterend) {
4091 ast_array_index *subscript;
4093 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
4097 ret = ast_return_new(ctx, (ast_expression*)subscript);
4099 ast_delete(subscript);
4103 return (ast_expression*)ret;
4105 ast_expression *left, *right;
4106 size_t diff = afterend - from;
4107 size_t middle = from + diff/2;
4108 left = array_getter_node(parser, array, index, from, middle);
4109 right = array_getter_node(parser, array, index, middle, afterend);
4110 return array_accessor_split(parser, array, index, middle, left, right);
4114 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
4116 ast_function *func = NULL;
4117 ast_value *fval = NULL;
4118 ast_block *body = NULL;
4120 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
4122 parseerror(parser, "failed to create accessor function value");
4126 func = ast_function_new(ast_ctx(array), funcname, fval);
4129 parseerror(parser, "failed to create accessor function node");
4133 body = ast_block_new(ast_ctx(array));
4135 parseerror(parser, "failed to create block for array accessor");
4141 vec_push(func->blocks, body);
4144 vec_push(parser->accessors, fval);
4149 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
4151 ast_expression *root = NULL;
4152 ast_value *index = NULL;
4153 ast_value *value = NULL;
4157 if (!ast_istype(array->expression.next, ast_value)) {
4158 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4162 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4164 func = fval->constval.vfunc;
4165 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4167 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4168 value = ast_value_copy((ast_value*)array->expression.next);
4170 if (!index || !value) {
4171 parseerror(parser, "failed to create locals for array accessor");
4174 (void)!ast_value_set_name(value, "value"); /* not important */
4175 vec_push(fval->expression.params, index);
4176 vec_push(fval->expression.params, value);
4178 root = array_setter_node(parser, array, index, value, 0, array->expression.count);
4180 parseerror(parser, "failed to build accessor search tree");
4184 array->setter = fval;
4185 return ast_block_add_expr(func->blocks[0], root);
4187 if (index) ast_delete(index);
4188 if (value) ast_delete(value);
4189 if (root) ast_delete(root);
4195 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
4197 ast_expression *root = NULL;
4198 ast_value *entity = NULL;
4199 ast_value *index = NULL;
4200 ast_value *value = NULL;
4204 if (!ast_istype(array->expression.next, ast_value)) {
4205 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4209 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4211 func = fval->constval.vfunc;
4212 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4214 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
4215 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4216 value = ast_value_copy((ast_value*)array->expression.next);
4217 if (!entity || !index || !value) {
4218 parseerror(parser, "failed to create locals for array accessor");
4221 (void)!ast_value_set_name(value, "value"); /* not important */
4222 vec_push(fval->expression.params, entity);
4223 vec_push(fval->expression.params, index);
4224 vec_push(fval->expression.params, value);
4226 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
4228 parseerror(parser, "failed to build accessor search tree");
4232 array->setter = fval;
4233 return ast_block_add_expr(func->blocks[0], root);
4235 if (entity) ast_delete(entity);
4236 if (index) ast_delete(index);
4237 if (value) ast_delete(value);
4238 if (root) ast_delete(root);
4244 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4246 ast_expression *root = NULL;
4247 ast_value *index = NULL;
4251 /* NOTE: checking array->expression.next rather than elemtype since
4252 * for fields elemtype is a temporary fieldtype.
4254 if (!ast_istype(array->expression.next, ast_value)) {
4255 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4259 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4261 func = fval->constval.vfunc;
4262 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
4264 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4267 parseerror(parser, "failed to create locals for array accessor");
4270 vec_push(fval->expression.params, index);
4272 root = array_getter_node(parser, array, index, 0, array->expression.count);
4274 parseerror(parser, "failed to build accessor search tree");
4278 array->getter = fval;
4279 return ast_block_add_expr(func->blocks[0], root);
4281 if (index) ast_delete(index);
4282 if (root) ast_delete(root);
4288 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
4289 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
4297 bool variadic = false;
4299 ctx = parser_ctx(parser);
4301 /* for the sake of less code we parse-in in this function */
4302 if (!parser_next(parser)) {
4303 parseerror(parser, "expected parameter list");
4309 /* parse variables until we hit a closing paren */
4310 while (parser->tok != ')') {
4312 /* there must be commas between them */
4313 if (parser->tok != ',') {
4314 parseerror(parser, "expected comma or end of parameter list");
4317 if (!parser_next(parser)) {
4318 parseerror(parser, "expected parameter");
4324 if (parser->tok == TOKEN_DOTS) {
4325 /* '...' indicates a varargs function */
4327 if (!parser_next(parser)) {
4328 parseerror(parser, "expected parameter");
4331 if (parser->tok != ')') {
4332 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4338 /* for anything else just parse a typename */
4339 param = parse_typename(parser, NULL, NULL);
4342 vec_push(params, param);
4343 if (param->expression.vtype >= TYPE_VARIANT) {
4344 char tname[1024]; /* typename is reserved in C++ */
4345 ast_type_to_string((ast_expression*)param, tname, sizeof(tname));
4346 parseerror(parser, "type not supported as part of a parameter list: %s", tname);
4352 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
4356 if (vec_size(params) > 8 && opts.standard == COMPILER_QCC)
4357 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
4360 if (!parser_next(parser)) {
4361 parseerror(parser, "parse error after typename");
4365 /* now turn 'var' into a function type */
4366 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
4367 fval->expression.next = (ast_expression*)var;
4369 fval->expression.flags |= AST_FLAG_VARIADIC;
4372 var->expression.params = params;
4379 for (i = 0; i < vec_size(params); ++i)
4380 ast_delete(params[i]);
4385 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
4387 ast_expression *cexp;
4388 ast_value *cval, *tmp;
4391 ctx = parser_ctx(parser);
4393 if (!parser_next(parser)) {
4395 parseerror(parser, "expected array-size");
4399 cexp = parse_expression_leave(parser, true, false, false);
4401 if (!cexp || !ast_istype(cexp, ast_value)) {
4405 parseerror(parser, "expected array-size as constant positive integer");
4408 cval = (ast_value*)cexp;
4410 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
4411 tmp->expression.next = (ast_expression*)var;
4414 if (cval->expression.vtype == TYPE_INTEGER)
4415 tmp->expression.count = cval->constval.vint;
4416 else if (cval->expression.vtype == TYPE_FLOAT)
4417 tmp->expression.count = cval->constval.vfloat;
4421 parseerror(parser, "array-size must be a positive integer constant");
4426 if (parser->tok != ']') {
4428 parseerror(parser, "expected ']' after array-size");
4431 if (!parser_next(parser)) {
4433 parseerror(parser, "error after parsing array size");
4439 /* Parse a complete typename.
4440 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
4441 * but when parsing variables separated by comma
4442 * 'storebase' should point to where the base-type should be kept.
4443 * The base type makes up every bit of type information which comes *before* the
4446 * The following will be parsed in its entirety:
4448 * The 'basetype' in this case is 'void()'
4449 * and if there's a comma after it, say:
4451 * then the type-information 'void()' can be stored in 'storebase'
4453 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
4455 ast_value *var, *tmp;
4458 const char *name = NULL;
4459 bool isfield = false;
4460 bool wasarray = false;
4461 size_t morefields = 0;
4463 ctx = parser_ctx(parser);
4465 /* types may start with a dot */
4466 if (parser->tok == '.') {
4468 /* if we parsed a dot we need a typename now */
4469 if (!parser_next(parser)) {
4470 parseerror(parser, "expected typename for field definition");
4474 /* Further dots are handled seperately because they won't be part of the
4477 while (parser->tok == '.') {
4479 if (!parser_next(parser)) {
4480 parseerror(parser, "expected typename for field definition");
4485 if (parser->tok == TOKEN_IDENT)
4486 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
4487 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
4488 parseerror(parser, "expected typename");
4492 /* generate the basic type value */
4493 if (cached_typedef) {
4494 var = ast_value_copy(cached_typedef);
4495 ast_value_set_name(var, "<type(from_def)>");
4497 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
4499 for (; morefields; --morefields) {
4500 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
4501 tmp->expression.next = (ast_expression*)var;
4505 /* do not yet turn into a field - remember:
4506 * .void() foo; is a field too
4507 * .void()() foo; is a function
4511 if (!parser_next(parser)) {
4513 parseerror(parser, "parse error after typename");
4517 /* an opening paren now starts the parameter-list of a function
4518 * this is where original-QC has parameter lists.
4519 * We allow a single parameter list here.
4520 * Much like fteqcc we don't allow `float()() x`
4522 if (parser->tok == '(') {
4523 var = parse_parameter_list(parser, var);
4528 /* store the base if requested */
4530 *storebase = ast_value_copy(var);
4532 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4533 tmp->expression.next = (ast_expression*)*storebase;
4538 /* there may be a name now */
4539 if (parser->tok == TOKEN_IDENT) {
4540 name = util_strdup(parser_tokval(parser));
4542 if (!parser_next(parser)) {
4544 parseerror(parser, "error after variable or field declaration");
4549 /* now this may be an array */
4550 if (parser->tok == '[') {
4552 var = parse_arraysize(parser, var);
4557 /* This is the point where we can turn it into a field */
4559 /* turn it into a field if desired */
4560 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4561 tmp->expression.next = (ast_expression*)var;
4565 /* now there may be function parens again */
4566 if (parser->tok == '(' && opts.standard == COMPILER_QCC)
4567 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4568 if (parser->tok == '(' && wasarray)
4569 parseerror(parser, "arrays as part of a return type is not supported");
4570 while (parser->tok == '(') {
4571 var = parse_parameter_list(parser, var);
4580 /* finally name it */
4582 if (!ast_value_set_name(var, name)) {
4584 parseerror(parser, "internal error: failed to set name");
4587 /* free the name, ast_value_set_name duplicates */
4594 static bool parse_typedef(parser_t *parser)
4596 ast_value *typevar, *oldtype;
4597 ast_expression *old;
4599 typevar = parse_typename(parser, NULL, NULL);
4604 if ( (old = parser_find_var(parser, typevar->name)) ) {
4605 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
4606 " -> `%s` has been declared here: %s:%i",
4607 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
4608 ast_delete(typevar);
4612 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
4613 parseerror(parser, "type `%s` has already been declared here: %s:%i",
4614 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
4615 ast_delete(typevar);
4619 vec_push(parser->_typedefs, typevar);
4620 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
4622 if (parser->tok != ';') {
4623 parseerror(parser, "expected semicolon after typedef");
4626 if (!parser_next(parser)) {
4627 parseerror(parser, "parse error after typedef");
4634 static const char *cvq_to_str(int cvq) {
4636 case CV_NONE: return "none";
4637 case CV_VAR: return "`var`";
4638 case CV_CONST: return "`const`";
4639 default: return "<INVALID>";
4643 static bool parser_check_qualifiers(parser_t *parser, const ast_value *var, const ast_value *proto)
4646 if (proto->cvq != var->cvq) {
4647 if (!(proto->cvq == CV_CONST && var->cvq == CV_NONE &&
4648 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
4649 parser->tok == '='))
4651 return !parsewarning(parser, WARN_DIFFERENT_QUALIFIERS,
4652 "`%s` declared with different qualifiers: %s\n"
4653 " -> previous declaration here: %s:%i uses %s",
4654 var->name, cvq_to_str(var->cvq),
4655 ast_ctx(proto).file, ast_ctx(proto).line,
4656 cvq_to_str(proto->cvq));
4659 av = (var ->expression.flags & AST_FLAG_NORETURN);
4660 ao = (proto->expression.flags & AST_FLAG_NORETURN);
4662 return !parsewarning(parser, WARN_DIFFERENT_ATTRIBUTES,
4663 "`%s` declared with different attributes%s\n"
4664 " -> previous declaration here: %s:%i",
4665 var->name, (av ? ": noreturn" : ""),
4666 ast_ctx(proto).file, ast_ctx(proto).line,
4667 (ao ? ": noreturn" : ""));
4672 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)
4676 ast_expression *old;
4680 ast_value *basetype = NULL;
4682 bool isparam = false;
4683 bool isvector = false;
4684 bool cleanvar = true;
4685 bool wasarray = false;
4689 if (!localblock && is_static)
4690 parseerror(parser, "`static` qualifier is not supported in global scope");
4692 /* get the first complete variable */
4693 var = parse_typename(parser, &basetype, cached_typedef);
4696 ast_delete(basetype);
4704 /* Part 0: finish the type */
4705 if (parser->tok == '(') {
4706 if (opts.standard == COMPILER_QCC)
4707 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4708 var = parse_parameter_list(parser, var);
4714 /* we only allow 1-dimensional arrays */
4715 if (parser->tok == '[') {
4717 var = parse_arraysize(parser, var);
4723 if (parser->tok == '(' && wasarray) {
4724 parseerror(parser, "arrays as part of a return type is not supported");
4725 /* we'll still parse the type completely for now */
4727 /* for functions returning functions */
4728 while (parser->tok == '(') {
4729 if (opts.standard == COMPILER_QCC)
4730 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4731 var = parse_parameter_list(parser, var);
4738 var->cvq = qualifier;
4739 var->expression.flags |= qflags;
4740 if (var->expression.flags & AST_FLAG_DEPRECATED)
4741 var->desc = vstring;
4744 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
4745 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
4746 * is then filled with the previous definition and the parameter-names replaced.
4748 if (!strcmp(var->name, "nil")) {
4749 if (OPTS_FLAG(UNTYPED_NIL)) {
4750 if (!localblock || !OPTS_FLAG(PERMISSIVE))
4751 parseerror(parser, "name `nil` not allowed (try -fpermissive)");
4753 (void)!parsewarning(parser, WARN_RESERVED_NAMES, "variable name `nil` is reserved");
4756 /* Deal with end_sys_ vars */
4758 if (!strcmp(var->name, "end_sys_globals")) {
4760 parser->crc_globals = vec_size(parser->globals);
4763 else if (!strcmp(var->name, "end_sys_fields")) {
4765 parser->crc_fields = vec_size(parser->fields);
4768 if (was_end && var->expression.vtype == TYPE_FIELD) {
4769 if (parsewarning(parser, WARN_END_SYS_FIELDS,
4770 "global '%s' hint should not be a field",
4771 parser_tokval(parser)))
4778 if (!nofields && var->expression.vtype == TYPE_FIELD)
4780 /* deal with field declarations */
4781 old = parser_find_field(parser, var->name);
4783 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
4784 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
4793 parseerror(parser, "field `%s` already declared here: %s:%i",
4794 var->name, ast_ctx(old).file, ast_ctx(old).line);
4799 if (opts.standard == COMPILER_QCC &&
4800 (old = parser_find_global(parser, var->name)))
4802 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
4803 parseerror(parser, "field `%s` already declared here: %s:%i",
4804 var->name, ast_ctx(old).file, ast_ctx(old).line);
4811 /* deal with other globals */
4812 old = parser_find_global(parser, var->name);
4813 if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
4815 /* This is a function which had a prototype */
4816 if (!ast_istype(old, ast_value)) {
4817 parseerror(parser, "internal error: prototype is not an ast_value");
4821 proto = (ast_value*)old;
4822 proto->desc = var->desc;
4823 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
4824 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
4826 ast_ctx(proto).file, ast_ctx(proto).line);
4830 /* we need the new parameter-names */
4831 for (i = 0; i < vec_size(proto->expression.params); ++i)
4832 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
4833 if (!parser_check_qualifiers(parser, var, proto)) {
4840 proto->expression.flags |= var->expression.flags;
4848 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
4849 "global `%s` already declared here: %s:%i",
4850 var->name, ast_ctx(old).file, ast_ctx(old).line))
4855 proto = (ast_value*)old;
4856 if (!ast_istype(old, ast_value)) {
4857 parseerror(parser, "internal error: not an ast_value");
4862 if (!parser_check_qualifiers(parser, var, proto)) {
4867 proto->expression.flags |= var->expression.flags;
4871 if (opts.standard == COMPILER_QCC &&
4872 (old = parser_find_field(parser, var->name)))
4874 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
4875 parseerror(parser, "global `%s` already declared here: %s:%i",
4876 var->name, ast_ctx(old).file, ast_ctx(old).line);
4883 else /* it's not a global */
4885 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
4886 if (old && !isparam) {
4887 parseerror(parser, "local `%s` already declared here: %s:%i",
4888 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
4892 old = parser_find_local(parser, var->name, 0, &isparam);
4893 if (old && isparam) {
4894 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
4895 "local `%s` is shadowing a parameter", var->name))
4897 parseerror(parser, "local `%s` already declared here: %s:%i",
4898 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
4902 if (opts.standard != COMPILER_GMQCC) {
4910 /* in a noref section we simply bump the usecount */
4911 if (noref || parser->noref)
4915 * Create the global/local, and deal with vector types.
4918 if (var->expression.vtype == TYPE_VECTOR)
4920 else if (var->expression.vtype == TYPE_FIELD &&
4921 var->expression.next->expression.vtype == TYPE_VECTOR)
4925 if (!create_vector_members(var, me)) {
4932 /* deal with global variables, fields, functions */
4933 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
4934 var->isfield = true;
4935 vec_push(parser->fields, (ast_expression*)var);
4936 util_htset(parser->htfields, var->name, var);
4938 for (i = 0; i < 3; ++i) {
4939 vec_push(parser->fields, (ast_expression*)me[i]);
4940 util_htset(parser->htfields, me[i]->name, me[i]);
4945 parser_addglobal(parser, var->name, (ast_expression*)var);
4947 for (i = 0; i < 3; ++i) {
4948 parser_addglobal(parser, me[i]->name, (ast_expression*)me[i]);
4954 /* a static adds itself to be generated like any other global
4955 * but is added to the local namespace instead
4957 char *defname = NULL;
4958 size_t prefix_len, ln;
4960 ln = strlen(parser->function->name);
4961 vec_append(defname, ln, parser->function->name);
4963 vec_append(defname, 2, "::");
4964 /* remember the length up to here */
4965 prefix_len = vec_size(defname);
4967 /* Add it to the local scope */
4968 util_htset(vec_last(parser->variables), var->name, (void*)var);
4972 vec_last(parser->correct_variables),
4973 &vec_last(parser->correct_variables_score),
4977 /* now rename the global */
4978 ln = strlen(var->name);
4979 vec_append(defname, ln, var->name);
4980 ast_value_set_name(var, defname);
4982 /* push it to the to-be-generated globals */
4983 vec_push(parser->globals, (ast_expression*)var);
4985 /* same game for the vector members */
4987 for (i = 0; i < 3; ++i) {
4988 util_htset(vec_last(parser->variables), me[i]->name, (void*)(me[i]));
4992 vec_last(parser->correct_variables),
4993 &vec_last(parser->correct_variables_score),
4997 vec_shrinkto(defname, prefix_len);
4998 ln = strlen(me[i]->name);
4999 vec_append(defname, ln, me[i]->name);
5000 ast_member_set_name(me[i], defname);
5002 vec_push(parser->globals, (ast_expression*)me[i]);
5007 vec_push(localblock->locals, var);
5008 parser_addlocal(parser, var->name, (ast_expression*)var);
5010 for (i = 0; i < 3; ++i) {
5011 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
5012 ast_block_collect(localblock, (ast_expression*)me[i]);
5018 me[0] = me[1] = me[2] = NULL;
5023 if (var->expression.vtype == TYPE_ARRAY) {
5025 snprintf(name, sizeof(name), "%s##SET", var->name);
5026 if (!parser_create_array_setter(parser, var, name))
5028 snprintf(name, sizeof(name), "%s##GET", var->name);
5029 if (!parser_create_array_getter(parser, var, var->expression.next, name))
5032 else if (!localblock && !nofields &&
5033 var->expression.vtype == TYPE_FIELD &&
5034 var->expression.next->expression.vtype == TYPE_ARRAY)
5037 ast_expression *telem;
5039 ast_value *array = (ast_value*)var->expression.next;
5041 if (!ast_istype(var->expression.next, ast_value)) {
5042 parseerror(parser, "internal error: field element type must be an ast_value");
5046 snprintf(name, sizeof(name), "%s##SETF", var->name);
5047 if (!parser_create_array_field_setter(parser, array, name))
5050 telem = ast_type_copy(ast_ctx(var), array->expression.next);
5051 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
5052 tfield->expression.next = telem;
5053 snprintf(name, sizeof(name), "%s##GETFP", var->name);
5054 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
5062 if (parser->tok == ';') {
5063 ast_delete(basetype);
5064 if (!parser_next(parser)) {
5065 parseerror(parser, "error after variable declaration");
5071 if (parser->tok == ',')
5075 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
5078 parseerror(parser, "missing comma or semicolon while parsing variables");
5082 if (localblock && opts.standard == COMPILER_QCC) {
5083 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
5084 "initializing expression turns variable `%s` into a constant in this standard",
5091 if (parser->tok != '{') {
5092 if (parser->tok != '=') {
5093 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
5097 if (!parser_next(parser)) {
5098 parseerror(parser, "error parsing initializer");
5102 else if (opts.standard == COMPILER_QCC) {
5103 parseerror(parser, "expected '=' before function body in this standard");
5106 if (parser->tok == '#') {
5107 ast_function *func = NULL;
5110 parseerror(parser, "cannot declare builtins within functions");
5113 if (var->expression.vtype != TYPE_FUNCTION) {
5114 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
5117 if (!parser_next(parser)) {
5118 parseerror(parser, "expected builtin number");
5121 if (parser->tok != TOKEN_INTCONST) {
5122 parseerror(parser, "builtin number must be an integer constant");
5125 if (parser_token(parser)->constval.i < 0) {
5126 parseerror(parser, "builtin number must be an integer greater than zero");
5130 if (var->hasvalue) {
5131 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
5132 "builtin `%s` has already been defined\n"
5133 " -> previous declaration here: %s:%i",
5134 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
5138 func = ast_function_new(ast_ctx(var), var->name, var);
5140 parseerror(parser, "failed to allocate function for `%s`", var->name);
5143 vec_push(parser->functions, func);
5145 func->builtin = -parser_token(parser)->constval.i-1;
5148 if (!parser_next(parser)) {
5149 parseerror(parser, "expected comma or semicolon");
5151 ast_function_delete(func);
5152 var->constval.vfunc = NULL;
5156 else if (parser->tok == '{' || parser->tok == '[')
5159 parseerror(parser, "cannot declare functions within functions");
5164 ast_ctx(proto) = parser_ctx(parser);
5166 if (!parse_function_body(parser, var))
5168 ast_delete(basetype);
5169 for (i = 0; i < vec_size(parser->gotos); ++i)
5170 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
5171 vec_free(parser->gotos);
5172 vec_free(parser->labels);
5175 ast_expression *cexp;
5178 cexp = parse_expression_leave(parser, true, false, false);
5183 cval = (ast_value*)cexp;
5184 if (cval != parser->nil &&
5185 (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
5188 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
5192 if (!OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
5193 qualifier != CV_VAR)
5195 var->cvq = CV_CONST;
5197 if (cval == parser->nil)
5198 var->expression.flags |= AST_FLAG_INITIALIZED;
5201 var->hasvalue = true;
5202 if (cval->expression.vtype == TYPE_STRING)
5203 var->constval.vstring = parser_strdup(cval->constval.vstring);
5204 else if (cval->expression.vtype == TYPE_FIELD)
5205 var->constval.vfield = cval;
5207 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
5213 shunt sy = { NULL, NULL };
5216 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
5217 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
5218 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
5219 if (!parser_sy_apply_operator(parser, &sy))
5222 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
5223 parseerror(parser, "internal error: leaked operands");
5224 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
5234 if (parser->tok == ',') {
5235 if (!parser_next(parser)) {
5236 parseerror(parser, "expected another variable");
5240 if (parser->tok != TOKEN_IDENT) {
5241 parseerror(parser, "expected another variable");
5244 var = ast_value_copy(basetype);
5246 ast_value_set_name(var, parser_tokval(parser));
5247 if (!parser_next(parser)) {
5248 parseerror(parser, "error parsing variable declaration");
5254 if (parser->tok != ';') {
5255 parseerror(parser, "missing semicolon after variables");
5259 if (!parser_next(parser)) {
5260 parseerror(parser, "parse error after variable declaration");
5264 ast_delete(basetype);
5268 if (cleanvar && var)
5270 ast_delete(basetype);
5274 ast_delete(basetype);
5275 if (cleanvar && var)
5277 if (me[0]) ast_member_delete(me[0]);
5278 if (me[1]) ast_member_delete(me[1]);
5279 if (me[2]) ast_member_delete(me[2]);
5283 static bool parser_global_statement(parser_t *parser)
5287 bool is_static = false;
5288 uint32_t qflags = 0;
5289 ast_value *istype = NULL;
5290 char *vstring = NULL;
5292 if (parser->tok == TOKEN_IDENT)
5293 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
5295 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
5297 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false, 0, NULL);
5299 else if (parse_qualifiers(parser, false, &cvq, &noref, &is_static, &qflags, &vstring))
5301 if (cvq == CV_WRONG)
5303 return parse_variable(parser, NULL, true, cvq, NULL, noref, is_static, qflags, vstring);
5305 else if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "enum"))
5307 return parse_enum(parser);
5309 else if (parser->tok == TOKEN_KEYWORD)
5311 if (!strcmp(parser_tokval(parser), "typedef")) {
5312 if (!parser_next(parser)) {
5313 parseerror(parser, "expected type definition after 'typedef'");
5316 return parse_typedef(parser);
5318 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
5321 else if (parser->tok == '#')
5323 return parse_pragma(parser);
5325 else if (parser->tok == '$')
5327 if (!parser_next(parser)) {
5328 parseerror(parser, "parse error");
5334 parseerror(parser, "unexpected token: %s", parser->lex->tok.value);
5340 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
5342 return util_crc16(old, str, strlen(str));
5345 static void progdefs_crc_file(const char *str)
5347 /* write to progdefs.h here */
5351 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
5353 old = progdefs_crc_sum(old, str);
5354 progdefs_crc_file(str);
5358 static void generate_checksum(parser_t *parser)
5360 uint16_t crc = 0xFFFF;
5364 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
5365 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
5367 progdefs_crc_file("\tint\tpad;\n");
5368 progdefs_crc_file("\tint\tofs_return[3];\n");
5369 progdefs_crc_file("\tint\tofs_parm0[3];\n");
5370 progdefs_crc_file("\tint\tofs_parm1[3];\n");
5371 progdefs_crc_file("\tint\tofs_parm2[3];\n");
5372 progdefs_crc_file("\tint\tofs_parm3[3];\n");
5373 progdefs_crc_file("\tint\tofs_parm4[3];\n");
5374 progdefs_crc_file("\tint\tofs_parm5[3];\n");
5375 progdefs_crc_file("\tint\tofs_parm6[3];\n");
5376 progdefs_crc_file("\tint\tofs_parm7[3];\n");
5378 for (i = 0; i < parser->crc_globals; ++i) {
5379 if (!ast_istype(parser->globals[i], ast_value))
5381 value = (ast_value*)(parser->globals[i]);
5382 switch (value->expression.vtype) {
5383 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5384 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5385 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5386 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5388 crc = progdefs_crc_both(crc, "\tint\t");
5391 crc = progdefs_crc_both(crc, value->name);
5392 crc = progdefs_crc_both(crc, ";\n");
5394 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
5395 for (i = 0; i < parser->crc_fields; ++i) {
5396 if (!ast_istype(parser->fields[i], ast_value))
5398 value = (ast_value*)(parser->fields[i]);
5399 switch (value->expression.next->expression.vtype) {
5400 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5401 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5402 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5403 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5405 crc = progdefs_crc_both(crc, "\tint\t");
5408 crc = progdefs_crc_both(crc, value->name);
5409 crc = progdefs_crc_both(crc, ";\n");
5411 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
5416 static parser_t *parser;
5423 parser = (parser_t*)mem_a(sizeof(parser_t));
5427 memset(parser, 0, sizeof(*parser));
5429 for (i = 0; i < operator_count; ++i) {
5430 if (operators[i].id == opid1('=')) {
5431 parser->assign_op = operators+i;
5435 if (!parser->assign_op) {
5436 printf("internal error: initializing parser: failed to find assign operator\n");
5441 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
5442 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
5443 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
5444 vec_push(parser->_blocktypedefs, 0);
5447 vec_push(parser->correct_variables, correct_trie_new());
5448 vec_push(parser->correct_variables_score, NULL);
5450 empty_ctx.file = "<internal>";
5452 parser->nil = ast_value_new(empty_ctx, "nil", TYPE_NIL);
5453 parser->nil->cvq = CV_CONST;
5454 if (OPTS_FLAG(UNTYPED_NIL))
5455 util_htset(parser->htglobals, "nil", (void*)parser->nil);
5459 bool parser_compile()
5461 /* initial lexer/parser state */
5462 parser->lex->flags.noops = true;
5464 if (parser_next(parser))
5466 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
5468 if (!parser_global_statement(parser)) {
5469 if (parser->tok == TOKEN_EOF)
5470 parseerror(parser, "unexpected eof");
5471 else if (compile_errors)
5472 parseerror(parser, "there have been errors, bailing out");
5473 lex_close(parser->lex);
5479 parseerror(parser, "parse error");
5480 lex_close(parser->lex);
5485 lex_close(parser->lex);
5488 return !compile_errors;
5491 bool parser_compile_file(const char *filename)
5493 parser->lex = lex_open(filename);
5495 con_err("failed to open file \"%s\"\n", filename);
5498 return parser_compile();
5501 bool parser_compile_string(const char *name, const char *str, size_t len)
5503 parser->lex = lex_open_string(str, len, name);
5505 con_err("failed to create lexer for string \"%s\"\n", name);
5508 return parser_compile();
5511 void parser_cleanup()
5514 for (i = 0; i < vec_size(parser->accessors); ++i) {
5515 ast_delete(parser->accessors[i]->constval.vfunc);
5516 parser->accessors[i]->constval.vfunc = NULL;
5517 ast_delete(parser->accessors[i]);
5519 for (i = 0; i < vec_size(parser->functions); ++i) {
5520 ast_delete(parser->functions[i]);
5522 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
5523 ast_delete(parser->imm_vector[i]);
5525 for (i = 0; i < vec_size(parser->imm_string); ++i) {
5526 ast_delete(parser->imm_string[i]);
5528 for (i = 0; i < vec_size(parser->imm_float); ++i) {
5529 ast_delete(parser->imm_float[i]);
5531 for (i = 0; i < vec_size(parser->fields); ++i) {
5532 ast_delete(parser->fields[i]);
5534 for (i = 0; i < vec_size(parser->globals); ++i) {
5535 ast_delete(parser->globals[i]);
5537 vec_free(parser->accessors);
5538 vec_free(parser->functions);
5539 vec_free(parser->imm_vector);
5540 vec_free(parser->imm_string);
5541 vec_free(parser->imm_float);
5542 vec_free(parser->globals);
5543 vec_free(parser->fields);
5545 for (i = 0; i < vec_size(parser->variables); ++i)
5546 util_htdel(parser->variables[i]);
5547 vec_free(parser->variables);
5548 vec_free(parser->_blocklocals);
5549 vec_free(parser->_locals);
5552 for (i = 0; i < vec_size(parser->correct_variables); ++i) {
5553 correct_del(parser->correct_variables[i], parser->correct_variables_score[i]);
5555 vec_free(parser->correct_variables);
5556 vec_free(parser->correct_variables_score);
5559 for (i = 0; i < vec_size(parser->_typedefs); ++i)
5560 ast_delete(parser->_typedefs[i]);
5561 vec_free(parser->_typedefs);
5562 for (i = 0; i < vec_size(parser->typedefs); ++i)
5563 util_htdel(parser->typedefs[i]);
5564 vec_free(parser->typedefs);
5565 vec_free(parser->_blocktypedefs);
5567 vec_free(parser->_block_ctx);
5569 vec_free(parser->labels);
5570 vec_free(parser->gotos);
5571 vec_free(parser->breaks);
5572 vec_free(parser->continues);
5574 ast_value_delete(parser->nil);
5579 bool parser_finish(const char *output)
5585 if (compile_errors) {
5586 con_out("*** there were compile errors\n");
5590 ir = ir_builder_new("gmqcc_out");
5592 con_out("failed to allocate builder\n");
5596 for (i = 0; i < vec_size(parser->fields); ++i) {
5599 if (!ast_istype(parser->fields[i], ast_value))
5601 field = (ast_value*)parser->fields[i];
5602 hasvalue = field->hasvalue;
5603 field->hasvalue = false;
5604 if (!ast_global_codegen((ast_value*)field, ir, true)) {
5605 con_out("failed to generate field %s\n", field->name);
5606 ir_builder_delete(ir);
5611 ast_expression *subtype;
5612 field->hasvalue = true;
5613 subtype = field->expression.next;
5614 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
5615 if (subtype->expression.vtype == TYPE_FIELD)
5616 ifld->fieldtype = subtype->expression.next->expression.vtype;
5617 else if (subtype->expression.vtype == TYPE_FUNCTION)
5618 ifld->outtype = subtype->expression.next->expression.vtype;
5619 (void)!ir_value_set_field(field->ir_v, ifld);
5622 for (i = 0; i < vec_size(parser->globals); ++i) {
5624 if (!ast_istype(parser->globals[i], ast_value))
5626 asvalue = (ast_value*)(parser->globals[i]);
5627 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
5628 retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
5629 "unused global: `%s`", asvalue->name);
5631 if (!ast_global_codegen(asvalue, ir, false)) {
5632 con_out("failed to generate global %s\n", asvalue->name);
5633 ir_builder_delete(ir);
5637 for (i = 0; i < vec_size(parser->imm_float); ++i) {
5638 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
5639 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
5640 ir_builder_delete(ir);
5644 for (i = 0; i < vec_size(parser->imm_string); ++i) {
5645 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
5646 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
5647 ir_builder_delete(ir);
5651 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
5652 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
5653 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
5654 ir_builder_delete(ir);
5658 for (i = 0; i < vec_size(parser->globals); ++i) {
5660 if (!ast_istype(parser->globals[i], ast_value))
5662 asvalue = (ast_value*)(parser->globals[i]);
5663 if (!(asvalue->expression.flags & AST_FLAG_INITIALIZED))
5665 if (asvalue->cvq == CV_CONST && !asvalue->hasvalue)
5666 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_CONSTANT,
5667 "uninitialized constant: `%s`",
5669 else if ((asvalue->cvq == CV_NONE || asvalue->cvq == CV_CONST) && !asvalue->hasvalue)
5670 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_GLOBAL,
5671 "uninitialized global: `%s`",
5674 if (!ast_generate_accessors(asvalue, ir)) {
5675 ir_builder_delete(ir);
5679 for (i = 0; i < vec_size(parser->fields); ++i) {
5681 asvalue = (ast_value*)(parser->fields[i]->expression.next);
5683 if (!ast_istype((ast_expression*)asvalue, ast_value))
5685 if (asvalue->expression.vtype != TYPE_ARRAY)
5687 if (!ast_generate_accessors(asvalue, ir)) {
5688 ir_builder_delete(ir);
5692 for (i = 0; i < vec_size(parser->functions); ++i) {
5693 if (!ast_function_codegen(parser->functions[i], ir)) {
5694 con_out("failed to generate function %s\n", parser->functions[i]->name);
5695 ir_builder_delete(ir);
5700 ir_builder_dump(ir, con_out);
5701 for (i = 0; i < vec_size(parser->functions); ++i) {
5702 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
5703 con_out("failed to finalize function %s\n", parser->functions[i]->name);
5704 ir_builder_delete(ir);
5709 if (compile_Werrors) {
5710 con_out("*** there were warnings treated as errors\n");
5711 compile_show_werrors();
5717 ir_builder_dump(ir, con_out);
5719 generate_checksum(parser);
5721 if (!ir_builder_generate(ir, output)) {
5722 con_out("*** failed to generate output file\n");
5723 ir_builder_delete(ir);
5728 ir_builder_delete(ir);