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,
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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 bool parse_typedef(parser_t *parser);
113 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);
114 static ast_block* parse_block(parser_t *parser);
115 static bool parse_block_into(parser_t *parser, ast_block *block);
116 static bool parse_statement_or_block(parser_t *parser, ast_expression **out);
117 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases);
118 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels);
119 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels);
121 static void parseerror(parser_t *parser, const char *fmt, ...)
125 vcompile_error(parser->lex->tok.ctx, fmt, ap);
129 /* returns true if it counts as an error */
130 static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
135 r = vcompile_warning(parser->lex->tok.ctx, warntype, fmt, ap);
140 static bool GMQCC_WARN genwarning(lex_ctx ctx, int warntype, const char *fmt, ...)
145 r = vcompile_warning(ctx, warntype, fmt, ap);
150 /**********************************************************************
151 * some maths used for constant folding
154 vector vec3_add(vector a, vector b)
163 vector vec3_sub(vector a, vector b)
172 qcfloat vec3_mulvv(vector a, vector b)
174 return (a.x * b.x + a.y * b.y + a.z * b.z);
177 vector vec3_mulvf(vector a, float b)
186 /**********************************************************************
190 bool parser_next(parser_t *parser)
192 /* lex_do kills the previous token */
193 parser->tok = lex_do(parser->lex);
194 if (parser->tok == TOKEN_EOF)
196 if (parser->tok >= TOKEN_ERROR) {
197 parseerror(parser, "lex error");
203 #define parser_tokval(p) ((p)->lex->tok.value)
204 #define parser_token(p) (&((p)->lex->tok))
205 #define parser_ctx(p) ((p)->lex->tok.ctx)
207 static ast_value* parser_const_float(parser_t *parser, double d)
211 for (i = 0; i < vec_size(parser->imm_float); ++i) {
212 const double compare = parser->imm_float[i]->constval.vfloat;
213 if (memcmp((const void*)&compare, (const void *)&d, sizeof(double)) == 0)
214 return parser->imm_float[i];
216 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_FLOAT);
218 out->hasvalue = true;
219 out->constval.vfloat = d;
220 vec_push(parser->imm_float, out);
224 static ast_value* parser_const_float_0(parser_t *parser)
226 if (!parser->imm_float_zero)
227 parser->imm_float_zero = parser_const_float(parser, 0);
228 return parser->imm_float_zero;
231 static ast_value* parser_const_float_1(parser_t *parser)
233 if (!parser->imm_float_one)
234 parser->imm_float_one = parser_const_float(parser, 1);
235 return parser->imm_float_one;
238 static char *parser_strdup(const char *str)
241 /* actually dup empty strings */
242 char *out = (char*)mem_a(1);
246 return util_strdup(str);
249 static ast_value* parser_const_string(parser_t *parser, const char *str, bool dotranslate)
253 for (i = 0; i < vec_size(parser->imm_string); ++i) {
254 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
255 return parser->imm_string[i];
259 snprintf(name, sizeof(name), "dotranslate_%lu", (unsigned long)(parser->translated++));
260 out = ast_value_new(parser_ctx(parser), name, TYPE_STRING);
262 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
264 out->hasvalue = true;
265 out->constval.vstring = parser_strdup(str);
266 vec_push(parser->imm_string, out);
270 static ast_value* parser_const_vector(parser_t *parser, vector v)
274 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
275 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
276 return parser->imm_vector[i];
278 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
280 out->hasvalue = true;
281 out->constval.vvec = v;
282 vec_push(parser->imm_vector, out);
286 static ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
292 return parser_const_vector(parser, v);
295 static ast_value* parser_const_vector_0(parser_t *parser)
297 if (!parser->imm_vector_zero)
298 parser->imm_vector_zero = parser_const_vector_f(parser, 0, 0, 0);
299 return parser->imm_vector_zero;
302 static ast_expression* parser_find_field(parser_t *parser, const char *name)
304 return ( ast_expression*)util_htget(parser->htfields, name);
307 static ast_expression* parser_find_label(parser_t *parser, const char *name)
310 for(i = 0; i < vec_size(parser->labels); i++)
311 if (!strcmp(parser->labels[i]->name, name))
312 return (ast_expression*)parser->labels[i];
316 static ast_expression* parser_find_global(parser_t *parser, const char *name)
318 return (ast_expression*)util_htget(parser->htglobals, name);
321 static ast_expression* parser_find_param(parser_t *parser, const char *name)
325 if (!parser->function)
327 fun = parser->function->vtype;
328 for (i = 0; i < vec_size(fun->expression.params); ++i) {
329 if (!strcmp(fun->expression.params[i]->name, name))
330 return (ast_expression*)(fun->expression.params[i]);
335 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
340 hash = util_hthash(parser->htglobals, name);
343 for (i = vec_size(parser->variables); i > upto;) {
345 if ( (e = (ast_expression*)util_htgeth(parser->variables[i], name, hash)) )
349 return parser_find_param(parser, name);
352 static ast_expression* parser_find_var(parser_t *parser, const char *name)
356 v = parser_find_local(parser, name, 0, &dummy);
357 if (!v) v = parser_find_global(parser, name);
361 static ast_value* parser_find_typedef(parser_t *parser, const char *name, size_t upto)
365 hash = util_hthash(parser->typedefs[0], name);
367 for (i = vec_size(parser->typedefs); i > upto;) {
369 if ( (e = (ast_value*)util_htgeth(parser->typedefs[i], name, hash)) )
377 size_t etype; /* 0 = expression, others are operators */
381 ast_block *block; /* for commas and function calls */
390 #define SY_PAREN_EXPR '('
391 #define SY_PAREN_FUNC 'f'
392 #define SY_PAREN_INDEX '['
393 #define SY_PAREN_TERNARY '?'
395 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
406 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
410 e.out = (ast_expression*)v;
417 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
419 e.etype = 1 + (op - operators);
428 static sy_elem syparen(lex_ctx ctx, int p, size_t off) {
440 # define DEBUGSHUNTDO(x) x
442 # define DEBUGSHUNTDO(x)
445 /* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
446 * so we need to rotate it to become ent.(foo[n]).
448 static bool rotate_entfield_array_index_nodes(ast_expression **out)
450 ast_array_index *index;
451 ast_entfield *entfield;
455 ast_expression *entity;
457 lex_ctx ctx = ast_ctx(*out);
459 if (!ast_istype(*out, ast_array_index))
461 index = (ast_array_index*)*out;
463 if (!ast_istype(index->array, ast_entfield))
465 entfield = (ast_entfield*)index->array;
467 if (!ast_istype(entfield->field, ast_value))
469 field = (ast_value*)entfield->field;
472 entity = entfield->entity;
476 index = ast_array_index_new(ctx, (ast_expression*)field, sub);
477 entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
478 *out = (ast_expression*)entfield;
483 static bool immediate_is_true(lex_ctx ctx, ast_value *v)
485 switch (v->expression.vtype) {
487 return !!v->constval.vfloat;
489 return !!v->constval.vint;
491 if (OPTS_FLAG(CORRECT_LOGIC))
492 return v->constval.vvec.x &&
493 v->constval.vvec.y &&
496 return !!(v->constval.vvec.x);
498 if (!v->constval.vstring)
500 if (v->constval.vstring && OPTS_FLAG(TRUE_EMPTY_STRINGS))
502 return !!v->constval.vstring[0];
504 compile_error(ctx, "internal error: immediate_is_true on invalid type");
505 return !!v->constval.vfunc;
509 static bool parser_sy_apply_operator(parser_t *parser, shunt *sy)
513 ast_expression *out = NULL;
514 ast_expression *exprs[3];
515 ast_block *blocks[3];
516 ast_value *asvalue[3];
517 ast_binstore *asbinstore;
518 size_t i, assignop, addop, subop;
519 qcint generated_op = 0;
524 if (!vec_size(sy->ops)) {
525 parseerror(parser, "internal error: missing operator");
529 if (vec_last(sy->ops).paren) {
530 parseerror(parser, "unmatched parenthesis");
534 op = &operators[vec_last(sy->ops).etype - 1];
535 ctx = vec_last(sy->ops).ctx;
537 DEBUGSHUNTDO(con_out("apply %s\n", op->op));
539 if (vec_size(sy->out) < op->operands) {
540 parseerror(parser, "internal error: not enough operands: %i (operator %s (%i))", vec_size(sy->out),
541 op->op, (int)op->id);
545 vec_shrinkby(sy->ops, 1);
547 /* op(:?) has no input and no output */
551 vec_shrinkby(sy->out, op->operands);
552 for (i = 0; i < op->operands; ++i) {
553 exprs[i] = sy->out[vec_size(sy->out)+i].out;
554 blocks[i] = sy->out[vec_size(sy->out)+i].block;
555 asvalue[i] = (ast_value*)exprs[i];
557 if (exprs[i]->expression.vtype == TYPE_NOEXPR &&
558 !(i != 0 && op->id == opid2('?',':')))
560 if (ast_istype(exprs[i], ast_label))
561 compile_error(ast_ctx(exprs[i]), "expected expression, got an unknown identifier");
563 compile_error(ast_ctx(exprs[i]), "not an expression");
564 (void)!compile_warning(ast_ctx(exprs[i]), WARN_DEBUG, "expression %u\n", (unsigned int)i);
568 if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
569 parseerror(parser, "internal error: operator cannot be applied on empty blocks");
573 #define NotSameType(T) \
574 (exprs[0]->expression.vtype != exprs[1]->expression.vtype || \
575 exprs[0]->expression.vtype != T)
576 #define CanConstFold1(A) \
577 (ast_istype((A), ast_value) && ((ast_value*)(A))->hasvalue && (((ast_value*)(A))->cvq == CV_CONST) &&\
578 (A)->expression.vtype != TYPE_FUNCTION)
579 #define CanConstFold(A, B) \
580 (CanConstFold1(A) && CanConstFold1(B))
581 #define ConstV(i) (asvalue[(i)]->constval.vvec)
582 #define ConstF(i) (asvalue[(i)]->constval.vfloat)
583 #define ConstS(i) (asvalue[(i)]->constval.vstring)
587 parseerror(parser, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
591 if (exprs[0]->expression.vtype == TYPE_ENTITY) {
592 if (exprs[1]->expression.vtype != TYPE_FIELD) {
593 parseerror(parser, "type error: right hand of member-operand should be an entity-field");
596 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
598 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
599 parseerror(parser, "internal error: vector access is not supposed to be handled at this point");
603 parseerror(parser, "type error: member-of operator on something that is not an entity or vector");
609 if (exprs[0]->expression.vtype != TYPE_ARRAY &&
610 !(exprs[0]->expression.vtype == TYPE_FIELD &&
611 exprs[0]->expression.next->expression.vtype == TYPE_ARRAY))
613 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
614 parseerror(parser, "cannot index value of type %s", ty1);
617 if (exprs[1]->expression.vtype != TYPE_FLOAT) {
618 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
619 parseerror(parser, "index must be of type float, not %s", ty1);
622 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
623 if (rotate_entfield_array_index_nodes(&out))
626 /* This is not broken in fteqcc anymore */
627 if (opts.standard != COMPILER_GMQCC) {
628 /* this error doesn't need to make us bail out */
629 (void)!parsewarning(parser, WARN_EXTENSIONS,
630 "accessing array-field members of an entity without parenthesis\n"
631 " -> this is an extension from -std=gmqcc");
639 if (!ast_block_add_expr(blocks[0], exprs[1]))
642 blocks[0] = ast_block_new(ctx);
643 if (!ast_block_add_expr(blocks[0], exprs[0]) ||
644 !ast_block_add_expr(blocks[0], exprs[1]))
649 if (!ast_block_set_type(blocks[0], exprs[1]))
652 vec_push(sy->out, syblock(ctx, blocks[0]));
659 switch (exprs[0]->expression.vtype) {
661 if (CanConstFold1(exprs[0]))
662 out = (ast_expression*)parser_const_float(parser, -ConstF(0));
664 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
665 (ast_expression*)parser_const_float_0(parser),
669 if (CanConstFold1(exprs[0]))
670 out = (ast_expression*)parser_const_vector_f(parser,
671 -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
673 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
674 (ast_expression*)parser_const_vector_0(parser),
678 parseerror(parser, "invalid types used in expression: cannot negate type %s",
679 type_name[exprs[0]->expression.vtype]);
685 switch (exprs[0]->expression.vtype) {
687 if (CanConstFold1(exprs[0]))
688 out = (ast_expression*)parser_const_float(parser, !ConstF(0));
690 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
693 if (CanConstFold1(exprs[0]))
694 out = (ast_expression*)parser_const_float(parser,
695 (!ConstV(0).x && !ConstV(0).y && !ConstV(0).z));
697 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
700 if (CanConstFold1(exprs[0])) {
701 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
702 out = (ast_expression*)parser_const_float(parser, !ConstS(0));
704 out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
706 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
707 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
709 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
712 /* we don't constant-fold NOT for these types */
714 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
717 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
720 parseerror(parser, "invalid types used in expression: cannot logically negate type %s",
721 type_name[exprs[0]->expression.vtype]);
727 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
728 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
730 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
731 type_name[exprs[0]->expression.vtype],
732 type_name[exprs[1]->expression.vtype]);
735 switch (exprs[0]->expression.vtype) {
737 if (CanConstFold(exprs[0], exprs[1]))
739 out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
742 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
745 if (CanConstFold(exprs[0], exprs[1]))
746 out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
748 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
751 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
752 type_name[exprs[0]->expression.vtype],
753 type_name[exprs[1]->expression.vtype]);
758 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
759 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
761 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
762 type_name[exprs[1]->expression.vtype],
763 type_name[exprs[0]->expression.vtype]);
766 switch (exprs[0]->expression.vtype) {
768 if (CanConstFold(exprs[0], exprs[1]))
769 out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
771 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
774 if (CanConstFold(exprs[0], exprs[1]))
775 out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
777 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
780 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
781 type_name[exprs[1]->expression.vtype],
782 type_name[exprs[0]->expression.vtype]);
787 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
788 !(exprs[0]->expression.vtype == TYPE_VECTOR &&
789 exprs[1]->expression.vtype == TYPE_FLOAT) &&
790 !(exprs[1]->expression.vtype == TYPE_VECTOR &&
791 exprs[0]->expression.vtype == TYPE_FLOAT)
794 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
795 type_name[exprs[1]->expression.vtype],
796 type_name[exprs[0]->expression.vtype]);
799 switch (exprs[0]->expression.vtype) {
801 if (exprs[1]->expression.vtype == TYPE_VECTOR)
803 if (CanConstFold(exprs[0], exprs[1]))
804 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
806 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
810 if (CanConstFold(exprs[0], exprs[1]))
811 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
813 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
817 if (exprs[1]->expression.vtype == TYPE_FLOAT)
819 if (CanConstFold(exprs[0], exprs[1]))
820 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
822 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
826 if (CanConstFold(exprs[0], exprs[1]))
827 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
828 else if (OPTS_OPTIMIZATION(OPTIM_VECTOR_COMPONENTS) && CanConstFold1(exprs[0])) {
829 vector vec = ConstV(0);
830 if (!vec.y && !vec.z) { /* 'n 0 0' * v */
831 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
832 out = (ast_expression*)ast_member_new(ctx, exprs[1], 0, NULL);
833 out->expression.node.keep = false;
834 ((ast_member*)out)->rvalue = true;
836 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.x), out);
838 else if (!vec.x && !vec.z) { /* '0 n 0' * v */
839 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
840 out = (ast_expression*)ast_member_new(ctx, exprs[1], 1, NULL);
841 out->expression.node.keep = false;
842 ((ast_member*)out)->rvalue = true;
844 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.y), out);
846 else if (!vec.x && !vec.y) { /* '0 n 0' * v */
847 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
848 out = (ast_expression*)ast_member_new(ctx, exprs[1], 2, NULL);
849 out->expression.node.keep = false;
850 ((ast_member*)out)->rvalue = true;
852 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.z), out);
855 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
857 else if (OPTS_OPTIMIZATION(OPTIM_VECTOR_COMPONENTS) && CanConstFold1(exprs[1])) {
858 vector vec = ConstV(1);
859 if (!vec.y && !vec.z) { /* v * 'n 0 0' */
860 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
861 out = (ast_expression*)ast_member_new(ctx, exprs[0], 0, NULL);
862 out->expression.node.keep = false;
863 ((ast_member*)out)->rvalue = true;
865 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.x));
867 else if (!vec.x && !vec.z) { /* v * '0 n 0' */
868 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
869 out = (ast_expression*)ast_member_new(ctx, exprs[0], 1, NULL);
870 out->expression.node.keep = false;
871 ((ast_member*)out)->rvalue = true;
873 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.y));
875 else if (!vec.x && !vec.y) { /* v * '0 n 0' */
876 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
877 out = (ast_expression*)ast_member_new(ctx, exprs[0], 2, NULL);
878 out->expression.node.keep = false;
879 ((ast_member*)out)->rvalue = true;
881 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.z));
884 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
887 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
891 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
892 type_name[exprs[1]->expression.vtype],
893 type_name[exprs[0]->expression.vtype]);
898 if (NotSameType(TYPE_FLOAT)) {
899 parseerror(parser, "invalid types used in expression: cannot divide types %s and %s",
900 type_name[exprs[0]->expression.vtype],
901 type_name[exprs[1]->expression.vtype]);
904 if (CanConstFold(exprs[0], exprs[1]))
905 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
907 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
911 parseerror(parser, "qc does not have a modulo operator");
915 if (NotSameType(TYPE_FLOAT)) {
916 parseerror(parser, "invalid types used in expression: cannot perform bit operations between types %s and %s",
917 type_name[exprs[0]->expression.vtype],
918 type_name[exprs[1]->expression.vtype]);
921 if (CanConstFold(exprs[0], exprs[1]))
922 out = (ast_expression*)parser_const_float(parser,
923 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
924 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
926 out = (ast_expression*)ast_binary_new(ctx,
927 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
931 parseerror(parser, "TODO: bitxor");
936 case opid3('<','<','='):
937 case opid3('>','>','='):
938 parseerror(parser, "TODO: shifts");
942 generated_op += 1; /* INSTR_OR */
944 generated_op += INSTR_AND;
946 if (NotSameType(TYPE_FLOAT)) {
947 parseerror(parser, "invalid types used in expression: cannot perform logical operations between types %s and %s",
948 type_name[exprs[0]->expression.vtype],
949 type_name[exprs[1]->expression.vtype]);
950 parseerror(parser, "TODO: logical ops for arbitrary types using INSTR_NOT");
951 parseerror(parser, "TODO: optional early out");
955 if (CanConstFold(exprs[0], exprs[1]))
957 if (OPTS_FLAG(PERL_LOGIC)) {
958 if (immediate_is_true(ctx, asvalue[0]))
962 out = (ast_expression*)parser_const_float(parser,
963 ( (generated_op == INSTR_OR)
964 ? (immediate_is_true(ctx, asvalue[0]) || immediate_is_true(ctx, asvalue[1]))
965 : (immediate_is_true(ctx, asvalue[0]) && immediate_is_true(ctx, asvalue[1])) )
970 if (OPTS_FLAG(PERL_LOGIC) && !ast_compare_type(exprs[0], exprs[1])) {
971 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
972 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
973 parseerror(parser, "invalid types for logical operation with -fperl-logic: %s and %s", ty1, ty2);
976 for (i = 0; i < 2; ++i) {
977 if (OPTS_FLAG(CORRECT_LOGIC) && exprs[i]->expression.vtype == TYPE_VECTOR) {
978 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[i]);
980 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
982 exprs[i] = out; out = NULL;
983 if (OPTS_FLAG(PERL_LOGIC)) {
984 /* here we want to keep the right expressions' type */
988 else if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && exprs[i]->expression.vtype == TYPE_STRING) {
989 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[i]);
991 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
993 exprs[i] = out; out = NULL;
994 if (OPTS_FLAG(PERL_LOGIC)) {
995 /* here we want to keep the right expressions' type */
1000 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
1004 case opid2('?',':'):
1005 if (vec_last(parser->pot) != POT_TERNARY2) {
1006 parseerror(parser, "mismatched parenthesis/ternary");
1009 vec_pop(parser->pot);
1010 if (!ast_compare_type(exprs[1], exprs[2])) {
1011 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
1012 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
1013 parseerror(parser, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
1016 if (CanConstFold1(exprs[0]))
1017 out = (immediate_is_true(ctx, asvalue[0]) ? exprs[1] : exprs[2]);
1019 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
1023 generated_op += 1; /* INSTR_GT */
1025 generated_op += 1; /* INSTR_LT */
1026 case opid2('>', '='):
1027 generated_op += 1; /* INSTR_GE */
1028 case opid2('<', '='):
1029 generated_op += INSTR_LE;
1030 if (NotSameType(TYPE_FLOAT)) {
1031 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
1032 type_name[exprs[0]->expression.vtype],
1033 type_name[exprs[1]->expression.vtype]);
1036 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
1038 case opid2('!', '='):
1039 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
1040 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
1041 type_name[exprs[0]->expression.vtype],
1042 type_name[exprs[1]->expression.vtype]);
1045 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
1047 case opid2('=', '='):
1048 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
1049 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
1050 type_name[exprs[0]->expression.vtype],
1051 type_name[exprs[1]->expression.vtype]);
1054 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
1058 if (ast_istype(exprs[0], ast_entfield)) {
1059 ast_expression *field = ((ast_entfield*)exprs[0])->field;
1060 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1061 exprs[0]->expression.vtype == TYPE_FIELD &&
1062 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
1064 assignop = type_storep_instr[TYPE_VECTOR];
1067 assignop = type_storep_instr[exprs[0]->expression.vtype];
1068 if (assignop == AINSTR_END || !ast_compare_type(field->expression.next, exprs[1]))
1070 ast_type_to_string(field->expression.next, ty1, sizeof(ty1));
1071 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1072 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1073 field->expression.next->expression.vtype == TYPE_FUNCTION &&
1074 exprs[1]->expression.vtype == TYPE_FUNCTION)
1076 (void)!parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
1077 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1080 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1085 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1086 exprs[0]->expression.vtype == TYPE_FIELD &&
1087 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
1089 assignop = type_store_instr[TYPE_VECTOR];
1092 assignop = type_store_instr[exprs[0]->expression.vtype];
1095 if (assignop == AINSTR_END) {
1096 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1097 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1098 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1100 else if (!ast_compare_type(exprs[0], exprs[1]))
1102 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1103 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1104 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1105 exprs[0]->expression.vtype == TYPE_FUNCTION &&
1106 exprs[1]->expression.vtype == TYPE_FUNCTION)
1108 (void)!parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
1109 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1112 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1115 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1116 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1118 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
1120 case opid3('+','+','P'):
1121 case opid3('-','-','P'):
1123 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1124 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1125 parseerror(parser, "invalid type for prefix increment: %s", ty1);
1128 if (op->id == opid3('+','+','P'))
1129 addop = INSTR_ADD_F;
1131 addop = INSTR_SUB_F;
1132 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1133 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1135 if (ast_istype(exprs[0], ast_entfield)) {
1136 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1138 (ast_expression*)parser_const_float_1(parser));
1140 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1142 (ast_expression*)parser_const_float_1(parser));
1145 case opid3('S','+','+'):
1146 case opid3('S','-','-'):
1148 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1149 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1150 parseerror(parser, "invalid type for suffix increment: %s", ty1);
1153 if (op->id == opid3('S','+','+')) {
1154 addop = INSTR_ADD_F;
1155 subop = INSTR_SUB_F;
1157 addop = INSTR_SUB_F;
1158 subop = INSTR_ADD_F;
1160 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1161 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1163 if (ast_istype(exprs[0], ast_entfield)) {
1164 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1166 (ast_expression*)parser_const_float_1(parser));
1168 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1170 (ast_expression*)parser_const_float_1(parser));
1174 out = (ast_expression*)ast_binary_new(ctx, subop,
1176 (ast_expression*)parser_const_float_1(parser));
1178 case opid2('+','='):
1179 case opid2('-','='):
1180 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
1181 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
1183 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1184 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1185 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1189 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1190 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1192 if (ast_istype(exprs[0], ast_entfield))
1193 assignop = type_storep_instr[exprs[0]->expression.vtype];
1195 assignop = type_store_instr[exprs[0]->expression.vtype];
1196 switch (exprs[0]->expression.vtype) {
1198 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1199 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
1200 exprs[0], exprs[1]);
1203 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1204 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1205 exprs[0], exprs[1]);
1208 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1209 type_name[exprs[0]->expression.vtype],
1210 type_name[exprs[1]->expression.vtype]);
1214 case opid2('*','='):
1215 case opid2('/','='):
1216 if (exprs[1]->expression.vtype != TYPE_FLOAT ||
1217 !(exprs[0]->expression.vtype == TYPE_FLOAT ||
1218 exprs[0]->expression.vtype == TYPE_VECTOR))
1220 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1221 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1222 parseerror(parser, "invalid types used in expression: %s and %s",
1226 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1227 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1229 if (ast_istype(exprs[0], ast_entfield))
1230 assignop = type_storep_instr[exprs[0]->expression.vtype];
1232 assignop = type_store_instr[exprs[0]->expression.vtype];
1233 switch (exprs[0]->expression.vtype) {
1235 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1236 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1237 exprs[0], exprs[1]);
1240 if (op->id == opid2('*','=')) {
1241 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1242 exprs[0], exprs[1]);
1244 /* there's no DIV_VF */
1245 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
1246 (ast_expression*)parser_const_float_1(parser),
1250 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1255 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1256 type_name[exprs[0]->expression.vtype],
1257 type_name[exprs[1]->expression.vtype]);
1261 case opid2('&','='):
1262 case opid2('|','='):
1263 if (NotSameType(TYPE_FLOAT)) {
1264 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1265 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1266 parseerror(parser, "invalid types used in expression: %s and %s",
1270 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1271 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1273 if (ast_istype(exprs[0], ast_entfield))
1274 assignop = type_storep_instr[exprs[0]->expression.vtype];
1276 assignop = type_store_instr[exprs[0]->expression.vtype];
1277 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1278 (op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1279 exprs[0], exprs[1]);
1281 case opid3('&','~','='):
1282 /* This is like: a &= ~(b);
1283 * But QC has no bitwise-not, so we implement it as
1286 if (NotSameType(TYPE_FLOAT)) {
1287 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1288 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1289 parseerror(parser, "invalid types used in expression: %s and %s",
1293 if (ast_istype(exprs[0], ast_entfield))
1294 assignop = type_storep_instr[exprs[0]->expression.vtype];
1296 assignop = type_store_instr[exprs[0]->expression.vtype];
1297 out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1300 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1301 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1303 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1304 asbinstore->keep_dest = true;
1305 out = (ast_expression*)asbinstore;
1311 parseerror(parser, "failed to apply operand %s", op->op);
1315 DEBUGSHUNTDO(con_out("applied %s\n", op->op));
1316 vec_push(sy->out, syexp(ctx, out));
1320 static bool parser_close_call(parser_t *parser, shunt *sy)
1322 /* was a function call */
1323 ast_expression *fun;
1329 vec_shrinkby(sy->ops, 1);
1330 fid = sy->ops[vec_size(sy->ops)].off;
1332 /* out[fid] is the function
1333 * everything above is parameters...
1334 * 0 params = nothing
1335 * 1 params = ast_expression
1339 if (vec_size(sy->out) < 1 || vec_size(sy->out) <= fid) {
1340 parseerror(parser, "internal error: function call needs function and parameter list...");
1344 fun = sy->out[fid].out;
1346 if (fun == intrinsic_debug_typestring) {
1348 if (fid+2 != vec_size(sy->out) ||
1349 vec_last(sy->out).block)
1351 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1354 ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
1355 ast_unref(vec_last(sy->out).out);
1356 sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
1357 (ast_expression*)parser_const_string(parser, ty, false));
1358 vec_shrinkby(sy->out, 1);
1362 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1364 parseerror(parser, "internal error: failed to create ast_call node");
1368 if (fid+1 == vec_size(sy->out)) {
1371 } else if (fid+2 == vec_size(sy->out)) {
1373 vec_shrinkby(sy->out, 1);
1374 params = sy->out[vec_size(sy->out)].block;
1378 vec_push(call->params, sy->out[vec_size(sy->out)].out);
1380 paramcount = vec_size(params->exprs);
1381 call->params = params->exprs;
1382 params->exprs = NULL;
1385 (void)!ast_call_check_types(call);
1387 parseerror(parser, "invalid function call");
1391 /* overwrite fid, the function, with a call */
1392 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1394 if (fun->expression.vtype != TYPE_FUNCTION) {
1395 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
1399 if (!fun->expression.next) {
1400 parseerror(parser, "could not determine function return type");
1403 ast_value *fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1405 if (fun->expression.flags & AST_FLAG_DEPRECATED) {
1407 return !parsewarning(parser, WARN_DEPRECATED,
1408 "call to function (which is marked deprecated)\n",
1409 "-> it has been declared here: %s:%i",
1410 ast_ctx(fun).file, ast_ctx(fun).line);
1413 return !parsewarning(parser, WARN_DEPRECATED,
1414 "call to `%s` (which is marked deprecated)\n"
1415 "-> `%s` declared here: %s:%i",
1416 fval->name, fval->name, ast_ctx(fun).file, ast_ctx(fun).line);
1418 return !parsewarning(parser, WARN_DEPRECATED,
1419 "call to `%s` (deprecated: %s)\n"
1420 "-> `%s` declared here: %s:%i",
1421 fval->name, fval->desc, fval->name, ast_ctx(fun).file,
1425 if (vec_size(fun->expression.params) != paramcount &&
1426 !((fun->expression.flags & AST_FLAG_VARIADIC) &&
1427 vec_size(fun->expression.params) < paramcount))
1429 const char *fewmany = (vec_size(fun->expression.params) > paramcount) ? "few" : "many";
1431 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1432 "too %s parameters for call to %s: expected %i, got %i\n"
1433 " -> `%s` has been declared here: %s:%i",
1434 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1435 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1437 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1438 "too %s parameters for function call: expected %i, got %i\n"
1439 " -> it has been declared here: %s:%i",
1440 fewmany, (int)vec_size(fun->expression.params), (int)paramcount,
1441 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1448 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
1450 if (!vec_size(sy->ops)) {
1451 parseerror(parser, "unmatched closing paren");
1454 /* this would for bit a + (x) because there are no operators inside (x)
1455 if (sy->ops[vec_size(sy->ops)-1].paren == 1) {
1456 parseerror(parser, "empty parenthesis expression");
1460 while (vec_size(sy->ops)) {
1461 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_FUNC) {
1462 if (!parser_close_call(parser, sy))
1466 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_EXPR) {
1467 vec_shrinkby(sy->ops, 1);
1468 return !functions_only;
1470 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_INDEX) {
1473 /* pop off the parenthesis */
1474 vec_shrinkby(sy->ops, 1);
1475 /* then apply the index operator */
1476 if (!parser_sy_apply_operator(parser, sy))
1480 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_TERNARY) {
1483 if (vec_last(parser->pot) != POT_TERNARY1) {
1484 parseerror(parser, "mismatched colon in ternary expression (missing closing paren?)");
1487 vec_last(parser->pot) = POT_TERNARY2;
1488 /* pop off the parenthesis */
1489 vec_shrinkby(sy->ops, 1);
1492 if (!parser_sy_apply_operator(parser, sy))
1498 static void parser_reclassify_token(parser_t *parser)
1501 for (i = 0; i < operator_count; ++i) {
1502 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1503 parser->tok = TOKEN_OPERATOR;
1509 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels)
1511 ast_expression *expr = NULL;
1513 bool wantop = false;
1514 bool gotmemberof = false;
1515 /* only warn once about an assignment in a truth value because the current code
1516 * would trigger twice on: if(a = b && ...), once for the if-truth-value, once for the && part
1518 bool warn_truthvalue = true;
1520 /* count the parens because an if starts with one, so the
1521 * end of a condition is an unmatched closing paren
1529 parser->lex->flags.noops = false;
1531 parser_reclassify_token(parser);
1536 gotmemberof = false;
1538 parser->memberof = 0;
1540 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1541 parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "_"))
1543 /* a translatable string */
1547 parseerror(parser, "expected operator or end of statement, got constant");
1551 parser->lex->flags.noops = true;
1552 if (!parser_next(parser) || parser->tok != '(') {
1553 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1556 parser->lex->flags.noops = false;
1557 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1558 parseerror(parser, "expected a constant string in translatable-string extension");
1561 val = parser_const_string(parser, parser_tokval(parser), true);
1565 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1566 DEBUGSHUNTDO(con_out("push string\n"));
1568 if (!parser_next(parser) || parser->tok != ')') {
1569 parseerror(parser, "expected closing paren after translatable string");
1573 else if (parser->tok == TOKEN_IDENT)
1575 ast_expression *var;
1577 parseerror(parser, "expected operator or end of statement");
1582 if (opts.standard == COMPILER_GMQCC)
1584 if (parser->memberof == TYPE_ENTITY) {
1585 /* still get vars first since there could be a fieldpointer */
1586 var = parser_find_var(parser, parser_tokval(parser));
1588 var = parser_find_field(parser, parser_tokval(parser));
1590 else if (parser->memberof == TYPE_VECTOR)
1592 parseerror(parser, "TODO: implement effective vector member access");
1595 else if (parser->memberof) {
1596 parseerror(parser, "namespace for member not found");
1600 var = parser_find_var(parser, parser_tokval(parser));
1602 var = parser_find_var(parser, parser_tokval(parser));
1604 var = parser_find_field(parser, parser_tokval(parser));
1606 if (!var && with_labels) {
1607 var = (ast_expression*)parser_find_label(parser, parser_tokval(parser));
1609 ast_label *lbl = ast_label_new(parser_ctx(parser), parser_tokval(parser), true);
1610 var = (ast_expression*)lbl;
1611 vec_push(parser->labels, lbl);
1616 if (!strcmp(parser_tokval(parser), "__builtin_debug_typestring")) {
1617 var = (ast_expression*)intrinsic_debug_typestring;
1622 char *correct = NULL;
1625 * sometimes people use preprocessing predefs without enabling them
1626 * i've done this thousands of times already myself. Lets check for
1627 * it in the predef table. And diagnose it better :)
1629 if (!OPTS_FLAG(FTEPP_PREDEFS)) {
1630 for (i = 0; i < sizeof(ftepp_predefs)/sizeof(*ftepp_predefs); i++) {
1631 if (!strcmp(ftepp_predefs[i].name, parser_tokval(parser))) {
1632 parseerror(parser, "unexpected ident: %s (use -fftepp-predef to enable pre-defined macros)", parser_tokval(parser));
1639 * TODO: determine the best score for the identifier: be it
1640 * a variable, a field.
1642 * We should also consider adding correction tables for
1643 * other things as well.
1645 if (OPTS_FLAG(ENHANCED_DIAGNOSTICS)) {
1646 for (i = 0; i < vec_size(parser->correct_variables); i++) {
1647 correct = correct_str(parser->correct_variables[i], parser_tokval(parser));
1648 if (strcmp(correct, parser_tokval(parser))) {
1650 } else if (correct) {
1656 parseerror(parser, "unexpected ident: %s (did you mean %s?)", parser_tokval(parser), correct);
1661 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1667 if (ast_istype(var, ast_value)) {
1668 ((ast_value*)var)->uses++;
1670 else if (ast_istype(var, ast_member)) {
1671 ast_member *mem = (ast_member*)var;
1672 if (ast_istype(mem->owner, ast_value))
1673 ((ast_value*)(mem->owner))->uses++;
1676 vec_push(sy.out, syexp(parser_ctx(parser), var));
1677 DEBUGSHUNTDO(con_out("push %s\n", parser_tokval(parser)));
1679 else if (parser->tok == TOKEN_FLOATCONST) {
1682 parseerror(parser, "expected operator or end of statement, got constant");
1686 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1689 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1690 DEBUGSHUNTDO(con_out("push %g\n", parser_token(parser)->constval.f));
1692 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1695 parseerror(parser, "expected operator or end of statement, got constant");
1699 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1702 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1703 DEBUGSHUNTDO(con_out("push %i\n", parser_token(parser)->constval.i));
1705 else if (parser->tok == TOKEN_STRINGCONST) {
1708 parseerror(parser, "expected operator or end of statement, got constant");
1712 val = parser_const_string(parser, parser_tokval(parser), false);
1715 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1716 DEBUGSHUNTDO(con_out("push string\n"));
1718 else if (parser->tok == TOKEN_VECTORCONST) {
1721 parseerror(parser, "expected operator or end of statement, got constant");
1725 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1728 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1729 DEBUGSHUNTDO(con_out("push '%g %g %g'\n",
1730 parser_token(parser)->constval.v.x,
1731 parser_token(parser)->constval.v.y,
1732 parser_token(parser)->constval.v.z));
1734 else if (parser->tok == '(') {
1735 parseerror(parser, "internal error: '(' should be classified as operator");
1738 else if (parser->tok == '[') {
1739 parseerror(parser, "internal error: '[' should be classified as operator");
1742 else if (parser->tok == ')') {
1744 DEBUGSHUNTDO(con_out("do[op] )\n"));
1748 /* we do expect an operator next */
1749 /* closing an opening paren */
1750 if (!parser_close_paren(parser, &sy, false))
1752 if (vec_last(parser->pot) != POT_PAREN) {
1753 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1756 vec_pop(parser->pot);
1758 DEBUGSHUNTDO(con_out("do[nop] )\n"));
1762 /* allowed for function calls */
1763 if (!parser_close_paren(parser, &sy, true))
1765 if (vec_last(parser->pot) != POT_PAREN) {
1766 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1769 vec_pop(parser->pot);
1773 else if (parser->tok == ']') {
1775 parseerror(parser, "operand expected");
1779 if (!parser_close_paren(parser, &sy, false))
1781 if (vec_last(parser->pot) != POT_PAREN) {
1782 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1785 vec_pop(parser->pot);
1788 else if (parser->tok == TOKEN_TYPENAME) {
1789 parseerror(parser, "unexpected typename");
1792 else if (parser->tok != TOKEN_OPERATOR) {
1794 parseerror(parser, "expected operator or end of statement");
1801 /* classify the operator */
1802 const oper_info *op;
1803 const oper_info *olast = NULL;
1805 for (o = 0; o < operator_count; ++o) {
1806 if (((!(operators[o].flags & OP_PREFIX) == !!wantop)) &&
1807 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1808 !strcmp(parser_tokval(parser), operators[o].op))
1813 if (o == operator_count) {
1814 /* no operator found... must be the end of the statement */
1817 /* found an operator */
1820 /* when declaring variables, a comma starts a new variable */
1821 if (op->id == opid1(',') && !parens && stopatcomma) {
1822 /* fixup the token */
1827 /* a colon without a pervious question mark cannot be a ternary */
1828 if (!ternaries && op->id == opid2(':','?')) {
1833 if (op->id == opid1(',')) {
1834 if (vec_size(parser->pot) && vec_last(parser->pot) == POT_TERNARY2) {
1835 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
1839 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1840 olast = &operators[vec_last(sy.ops).etype-1];
1842 #define IsAssignOp(x) (\
1843 (x) == opid1('=') || \
1844 (x) == opid2('+','=') || \
1845 (x) == opid2('-','=') || \
1846 (x) == opid2('*','=') || \
1847 (x) == opid2('/','=') || \
1848 (x) == opid2('%','=') || \
1849 (x) == opid2('&','=') || \
1850 (x) == opid2('|','=') || \
1851 (x) == opid3('&','~','=') \
1853 if (warn_truthvalue) {
1854 if ( (olast && IsAssignOp(olast->id) && (op->id == opid2('&','&') || op->id == opid2('|','|'))) ||
1855 (olast && IsAssignOp(op->id) && (olast->id == opid2('&','&') || olast->id == opid2('|','|'))) ||
1856 (truthvalue && !vec_size(parser->pot) && IsAssignOp(op->id))
1859 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around assignment used as truth value");
1860 warn_truthvalue = false;
1865 (op->prec < olast->prec) ||
1866 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1868 if (!parser_sy_apply_operator(parser, &sy))
1870 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1871 olast = &operators[vec_last(sy.ops).etype-1];
1876 if (op->id == opid1('.') && opts.standard == COMPILER_GMQCC) {
1877 /* for gmqcc standard: open up the namespace of the previous type */
1878 ast_expression *prevex = vec_last(sy.out).out;
1880 parseerror(parser, "unexpected member operator");
1883 if (prevex->expression.vtype == TYPE_ENTITY)
1884 parser->memberof = TYPE_ENTITY;
1885 else if (prevex->expression.vtype == TYPE_VECTOR)
1886 parser->memberof = TYPE_VECTOR;
1888 parseerror(parser, "type error: type has no members");
1894 if (op->id == opid1('(')) {
1896 size_t sycount = vec_size(sy.out);
1897 DEBUGSHUNTDO(con_out("push [op] (\n"));
1898 ++parens; vec_push(parser->pot, POT_PAREN);
1899 /* we expected an operator, this is the function-call operator */
1900 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_FUNC, sycount-1));
1902 ++parens; vec_push(parser->pot, POT_PAREN);
1903 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_EXPR, 0));
1904 DEBUGSHUNTDO(con_out("push [nop] (\n"));
1907 } else if (op->id == opid1('[')) {
1909 parseerror(parser, "unexpected array subscript");
1912 ++parens; vec_push(parser->pot, POT_PAREN);
1913 /* push both the operator and the paren, this makes life easier */
1914 vec_push(sy.ops, syop(parser_ctx(parser), op));
1915 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_INDEX, 0));
1917 } else if (op->id == opid2('?',':')) {
1918 vec_push(sy.ops, syop(parser_ctx(parser), op));
1919 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_TERNARY, 0));
1922 vec_push(parser->pot, POT_TERNARY1);
1923 } else if (op->id == opid2(':','?')) {
1924 if (!vec_size(parser->pot)) {
1925 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1928 if (vec_last(parser->pot) != POT_TERNARY1) {
1929 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1932 if (!parser_close_paren(parser, &sy, false))
1934 vec_push(sy.ops, syop(parser_ctx(parser), op));
1938 DEBUGSHUNTDO(con_out("push operator %s\n", op->op));
1939 vec_push(sy.ops, syop(parser_ctx(parser), op));
1940 wantop = !!(op->flags & OP_SUFFIX);
1943 if (!parser_next(parser)) {
1946 if (parser->tok == ';' ||
1947 (!parens && parser->tok == ']'))
1953 while (vec_size(sy.ops)) {
1954 if (!parser_sy_apply_operator(parser, &sy))
1958 parser->lex->flags.noops = true;
1959 if (!vec_size(sy.out)) {
1960 parseerror(parser, "empty expression");
1963 expr = sy.out[0].out;
1966 DEBUGSHUNTDO(con_out("shunt done\n"));
1967 if (vec_size(parser->pot)) {
1968 parseerror(parser, "internal error: vec_size(parser->pot) = %lu", (unsigned long)vec_size(parser->pot));
1971 vec_free(parser->pot);
1975 parser->lex->flags.noops = true;
1981 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels)
1983 ast_expression *e = parse_expression_leave(parser, stopatcomma, false, with_labels);
1986 if (!parser_next(parser)) {
1993 static void parser_enterblock(parser_t *parser)
1995 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
1996 vec_push(parser->_blocklocals, vec_size(parser->_locals));
1997 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
1998 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
1999 vec_push(parser->_block_ctx, parser_ctx(parser));
2002 vec_push(parser->correct_variables, correct_trie_new());
2003 vec_push(parser->correct_variables_score, NULL);
2006 static bool parser_leaveblock(parser_t *parser)
2009 size_t locals, typedefs;
2011 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
2012 parseerror(parser, "internal error: parser_leaveblock with no block");
2016 util_htdel(vec_last(parser->variables));
2017 correct_del(vec_last(parser->correct_variables), vec_last(parser->correct_variables_score));
2019 vec_pop(parser->variables);
2020 vec_pop(parser->correct_variables);
2021 vec_pop(parser->correct_variables_score);
2022 if (!vec_size(parser->_blocklocals)) {
2023 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
2027 locals = vec_last(parser->_blocklocals);
2028 vec_pop(parser->_blocklocals);
2029 while (vec_size(parser->_locals) != locals) {
2030 ast_expression *e = vec_last(parser->_locals);
2031 ast_value *v = (ast_value*)e;
2032 vec_pop(parser->_locals);
2033 if (ast_istype(e, ast_value) && !v->uses) {
2034 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name))
2039 typedefs = vec_last(parser->_blocktypedefs);
2040 while (vec_size(parser->_typedefs) != typedefs) {
2041 ast_delete(vec_last(parser->_typedefs));
2042 vec_pop(parser->_typedefs);
2044 util_htdel(vec_last(parser->typedefs));
2045 vec_pop(parser->typedefs);
2047 vec_pop(parser->_block_ctx);
2052 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
2054 vec_push(parser->_locals, e);
2055 util_htset(vec_last(parser->variables), name, (void*)e);
2059 vec_last(parser->correct_variables),
2060 &vec_last(parser->correct_variables_score),
2065 static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
2069 ast_expression *prev;
2071 if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->expression.vtype == TYPE_STRING)
2074 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
2077 parseerror(parser, "internal error: failed to process condition");
2082 else if (OPTS_FLAG(CORRECT_LOGIC) && cond->expression.vtype == TYPE_VECTOR)
2084 /* vector types need to be cast to true booleans */
2085 ast_binary *bin = (ast_binary*)cond;
2086 if (!OPTS_FLAG(PERL_LOGIC) || !ast_istype(cond, ast_binary) || !(bin->op == INSTR_AND || bin->op == INSTR_OR))
2088 /* in perl-logic, AND and OR take care of the -fcorrect-logic */
2090 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_V, cond);
2093 parseerror(parser, "internal error: failed to process condition");
2100 unary = (ast_unary*)cond;
2101 while (ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F)
2103 cond = unary->operand;
2104 unary->operand = NULL;
2107 unary = (ast_unary*)cond;
2111 parseerror(parser, "internal error: failed to process condition");
2113 if (ifnot) *_ifnot = !*_ifnot;
2117 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
2120 ast_expression *cond, *ontrue = NULL, *onfalse = NULL;
2123 lex_ctx ctx = parser_ctx(parser);
2125 (void)block; /* not touching */
2127 /* skip the 'if', parse an optional 'not' and check for an opening paren */
2128 if (!parser_next(parser)) {
2129 parseerror(parser, "expected condition or 'not'");
2132 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
2134 if (!parser_next(parser)) {
2135 parseerror(parser, "expected condition in parenthesis");
2139 if (parser->tok != '(') {
2140 parseerror(parser, "expected 'if' condition in parenthesis");
2143 /* parse into the expression */
2144 if (!parser_next(parser)) {
2145 parseerror(parser, "expected 'if' condition after opening paren");
2148 /* parse the condition */
2149 cond = parse_expression_leave(parser, false, true, false);
2153 if (parser->tok != ')') {
2154 parseerror(parser, "expected closing paren after 'if' condition");
2158 /* parse into the 'then' branch */
2159 if (!parser_next(parser)) {
2160 parseerror(parser, "expected statement for on-true branch of 'if'");
2164 if (!parse_statement_or_block(parser, &ontrue)) {
2168 /* check for an else */
2169 if (!strcmp(parser_tokval(parser), "else")) {
2170 /* parse into the 'else' branch */
2171 if (!parser_next(parser)) {
2172 parseerror(parser, "expected on-false branch after 'else'");
2177 if (!parse_statement_or_block(parser, &onfalse)) {
2184 cond = process_condition(parser, cond, &ifnot);
2186 if (ontrue) ast_delete(ontrue);
2187 if (onfalse) ast_delete(onfalse);
2192 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
2194 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
2195 *out = (ast_expression*)ifthen;
2199 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out);
2200 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
2205 /* skip the 'while' and get the body */
2206 if (!parser_next(parser)) {
2207 if (OPTS_FLAG(LOOP_LABELS))
2208 parseerror(parser, "expected loop label or 'while' condition in parenthesis");
2210 parseerror(parser, "expected 'while' condition in parenthesis");
2214 if (parser->tok == ':') {
2215 if (!OPTS_FLAG(LOOP_LABELS))
2216 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2217 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2218 parseerror(parser, "expected loop label");
2221 label = util_strdup(parser_tokval(parser));
2222 if (!parser_next(parser)) {
2224 parseerror(parser, "expected 'while' condition in parenthesis");
2229 if (parser->tok != '(') {
2230 parseerror(parser, "expected 'while' condition in parenthesis");
2234 vec_push(parser->breaks, label);
2235 vec_push(parser->continues, label);
2237 rv = parse_while_go(parser, block, out);
2240 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2241 parseerror(parser, "internal error: label stack corrupted");
2247 vec_pop(parser->breaks);
2248 vec_pop(parser->continues);
2253 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out)
2256 ast_expression *cond, *ontrue;
2260 lex_ctx ctx = parser_ctx(parser);
2262 (void)block; /* not touching */
2264 /* parse into the expression */
2265 if (!parser_next(parser)) {
2266 parseerror(parser, "expected 'while' condition after opening paren");
2269 /* parse the condition */
2270 cond = parse_expression_leave(parser, false, true, false);
2274 if (parser->tok != ')') {
2275 parseerror(parser, "expected closing paren after 'while' condition");
2279 /* parse into the 'then' branch */
2280 if (!parser_next(parser)) {
2281 parseerror(parser, "expected while-loop body");
2285 if (!parse_statement_or_block(parser, &ontrue)) {
2290 cond = process_condition(parser, cond, &ifnot);
2295 aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue);
2296 *out = (ast_expression*)aloop;
2300 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out);
2301 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2306 /* skip the 'do' and get the body */
2307 if (!parser_next(parser)) {
2308 if (OPTS_FLAG(LOOP_LABELS))
2309 parseerror(parser, "expected loop label or body");
2311 parseerror(parser, "expected loop body");
2315 if (parser->tok == ':') {
2316 if (!OPTS_FLAG(LOOP_LABELS))
2317 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2318 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2319 parseerror(parser, "expected loop label");
2322 label = util_strdup(parser_tokval(parser));
2323 if (!parser_next(parser)) {
2325 parseerror(parser, "expected loop body");
2330 vec_push(parser->breaks, label);
2331 vec_push(parser->continues, label);
2333 rv = parse_dowhile_go(parser, block, out);
2336 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2337 parseerror(parser, "internal error: label stack corrupted");
2343 vec_pop(parser->breaks);
2344 vec_pop(parser->continues);
2349 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out)
2352 ast_expression *cond, *ontrue;
2356 lex_ctx ctx = parser_ctx(parser);
2358 (void)block; /* not touching */
2360 if (!parse_statement_or_block(parser, &ontrue))
2363 /* expect the "while" */
2364 if (parser->tok != TOKEN_KEYWORD ||
2365 strcmp(parser_tokval(parser), "while"))
2367 parseerror(parser, "expected 'while' and condition");
2372 /* skip the 'while' and check for opening paren */
2373 if (!parser_next(parser) || parser->tok != '(') {
2374 parseerror(parser, "expected 'while' condition in parenthesis");
2378 /* parse into the expression */
2379 if (!parser_next(parser)) {
2380 parseerror(parser, "expected 'while' condition after opening paren");
2384 /* parse the condition */
2385 cond = parse_expression_leave(parser, false, true, false);
2389 if (parser->tok != ')') {
2390 parseerror(parser, "expected closing paren after 'while' condition");
2396 if (!parser_next(parser) || parser->tok != ';') {
2397 parseerror(parser, "expected semicolon after condition");
2403 if (!parser_next(parser)) {
2404 parseerror(parser, "parse error");
2410 cond = process_condition(parser, cond, &ifnot);
2415 aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue);
2416 *out = (ast_expression*)aloop;
2420 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out);
2421 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2426 /* skip the 'for' and check for opening paren */
2427 if (!parser_next(parser)) {
2428 if (OPTS_FLAG(LOOP_LABELS))
2429 parseerror(parser, "expected loop label or 'for' expressions in parenthesis");
2431 parseerror(parser, "expected 'for' expressions in parenthesis");
2435 if (parser->tok == ':') {
2436 if (!OPTS_FLAG(LOOP_LABELS))
2437 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2438 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2439 parseerror(parser, "expected loop label");
2442 label = util_strdup(parser_tokval(parser));
2443 if (!parser_next(parser)) {
2445 parseerror(parser, "expected 'for' expressions in parenthesis");
2450 if (parser->tok != '(') {
2451 parseerror(parser, "expected 'for' expressions in parenthesis");
2455 vec_push(parser->breaks, label);
2456 vec_push(parser->continues, label);
2458 rv = parse_for_go(parser, block, out);
2461 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2462 parseerror(parser, "internal error: label stack corrupted");
2468 vec_pop(parser->breaks);
2469 vec_pop(parser->continues);
2473 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out)
2476 ast_expression *initexpr, *cond, *increment, *ontrue;
2482 lex_ctx ctx = parser_ctx(parser);
2484 parser_enterblock(parser);
2491 /* parse into the expression */
2492 if (!parser_next(parser)) {
2493 parseerror(parser, "expected 'for' initializer after opening paren");
2498 if (parser->tok == TOKEN_IDENT)
2499 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2501 if (typevar || parser->tok == TOKEN_TYPENAME) {
2503 if (opts.standard != COMPILER_GMQCC) {
2504 if (parsewarning(parser, WARN_EXTENSIONS,
2505 "current standard does not allow variable declarations in for-loop initializers"))
2509 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false, 0, NULL))
2512 else if (parser->tok != ';')
2514 initexpr = parse_expression_leave(parser, false, false, false);
2519 /* move on to condition */
2520 if (parser->tok != ';') {
2521 parseerror(parser, "expected semicolon after for-loop initializer");
2524 if (!parser_next(parser)) {
2525 parseerror(parser, "expected for-loop condition");
2529 /* parse the condition */
2530 if (parser->tok != ';') {
2531 cond = parse_expression_leave(parser, false, true, false);
2536 /* move on to incrementor */
2537 if (parser->tok != ';') {
2538 parseerror(parser, "expected semicolon after for-loop initializer");
2541 if (!parser_next(parser)) {
2542 parseerror(parser, "expected for-loop condition");
2546 /* parse the incrementor */
2547 if (parser->tok != ')') {
2548 increment = parse_expression_leave(parser, false, false, false);
2551 if (!ast_side_effects(increment)) {
2552 if (genwarning(ast_ctx(increment), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2558 if (parser->tok != ')') {
2559 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2562 /* parse into the 'then' branch */
2563 if (!parser_next(parser)) {
2564 parseerror(parser, "expected for-loop body");
2567 if (!parse_statement_or_block(parser, &ontrue))
2571 cond = process_condition(parser, cond, &ifnot);
2575 aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue);
2576 *out = (ast_expression*)aloop;
2578 if (!parser_leaveblock(parser))
2582 if (initexpr) ast_delete(initexpr);
2583 if (cond) ast_delete(cond);
2584 if (increment) ast_delete(increment);
2585 (void)!parser_leaveblock(parser);
2589 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2591 ast_expression *exp = NULL;
2592 ast_return *ret = NULL;
2593 ast_value *expected = parser->function->vtype;
2595 lex_ctx ctx = parser_ctx(parser);
2597 (void)block; /* not touching */
2599 if (!parser_next(parser)) {
2600 parseerror(parser, "expected return expression");
2604 if (parser->tok != ';') {
2605 exp = parse_expression(parser, false, false);
2609 if (exp->expression.vtype != TYPE_NIL &&
2610 exp->expression.vtype != expected->expression.next->expression.vtype)
2612 parseerror(parser, "return with invalid expression");
2615 ret = ast_return_new(ctx, exp);
2621 if (!parser_next(parser))
2622 parseerror(parser, "parse error");
2623 if (expected->expression.next->expression.vtype != TYPE_VOID) {
2624 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2626 ret = ast_return_new(ctx, NULL);
2628 *out = (ast_expression*)ret;
2632 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2635 unsigned int levels = 0;
2636 lex_ctx ctx = parser_ctx(parser);
2637 const char **loops = (is_continue ? parser->continues : parser->breaks);
2639 (void)block; /* not touching */
2640 if (!parser_next(parser)) {
2641 parseerror(parser, "expected semicolon or loop label");
2645 if (parser->tok == TOKEN_IDENT) {
2646 if (!OPTS_FLAG(LOOP_LABELS))
2647 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2648 i = vec_size(loops);
2650 if (loops[i] && !strcmp(loops[i], parser_tokval(parser)))
2653 parseerror(parser, "no such loop to %s: `%s`",
2654 (is_continue ? "continue" : "break out of"),
2655 parser_tokval(parser));
2660 if (!parser_next(parser)) {
2661 parseerror(parser, "expected semicolon");
2666 if (parser->tok != ';') {
2667 parseerror(parser, "expected semicolon");
2671 if (!parser_next(parser))
2672 parseerror(parser, "parse error");
2674 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue, levels);
2678 /* returns true when it was a variable qualifier, false otherwise!
2679 * on error, cvq is set to CV_WRONG
2681 static bool parse_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *is_static, uint32_t *_flags, char **message)
2683 bool had_const = false;
2684 bool had_var = false;
2685 bool had_noref = false;
2686 bool had_attrib = false;
2687 bool had_static = false;
2692 if (parser->tok == TOKEN_ATTRIBUTE_OPEN) {
2694 /* parse an attribute */
2695 if (!parser_next(parser)) {
2696 parseerror(parser, "expected attribute after `[[`");
2700 if (!strcmp(parser_tokval(parser), "noreturn")) {
2701 flags |= AST_FLAG_NORETURN;
2702 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2703 parseerror(parser, "`noreturn` attribute has no parameters, expected `]]`");
2708 else if (!strcmp(parser_tokval(parser), "noref")) {
2710 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2711 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2716 else if (!strcmp(parser_tokval(parser), "inline")) {
2717 flags |= AST_FLAG_INLINE;
2718 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2719 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2726 else if (!strcmp(parser_tokval(parser), "deprecated") && !(flags & AST_FLAG_DEPRECATED)) {
2727 flags |= AST_FLAG_DEPRECATED;
2730 if (!parser_next(parser)) {
2731 parseerror(parser, "parse error in attribute");
2735 if (parser->tok == '(') {
2736 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
2737 parseerror(parser, "`deprecated` attribute missing parameter");
2741 *message = util_strdup(parser_tokval(parser));
2743 if (!parser_next(parser)) {
2744 parseerror(parser, "parse error in attribute");
2748 if(parser->tok != ')') {
2749 parseerror(parser, "`deprecated` attribute expected `)` after parameter");
2753 if (!parser_next(parser)) {
2754 parseerror(parser, "parse error in attribute");
2759 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2760 parseerror(parser, "`deprecated` attribute expected `]]`");
2763 if (*message) mem_d(*message);
2771 /* Skip tokens until we hit a ]] */
2772 (void)!parsewarning(parser, WARN_UNKNOWN_ATTRIBUTE, "unknown attribute starting with `%s`", parser_tokval(parser));
2773 while (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2774 if (!parser_next(parser)) {
2775 parseerror(parser, "error inside attribute");
2782 else if (!strcmp(parser_tokval(parser), "static"))
2784 else if (!strcmp(parser_tokval(parser), "const"))
2786 else if (!strcmp(parser_tokval(parser), "var"))
2788 else if (with_local && !strcmp(parser_tokval(parser), "local"))
2790 else if (!strcmp(parser_tokval(parser), "noref"))
2792 else if (!had_const && !had_var && !had_noref && !had_attrib && !had_static && !flags) {
2797 if (!parser_next(parser))
2807 *is_static = had_static;
2811 parseerror(parser, "parse error after variable qualifier");
2816 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out);
2817 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
2822 /* skip the 'while' and get the body */
2823 if (!parser_next(parser)) {
2824 if (OPTS_FLAG(LOOP_LABELS))
2825 parseerror(parser, "expected loop label or 'switch' operand in parenthesis");
2827 parseerror(parser, "expected 'switch' operand in parenthesis");
2831 if (parser->tok == ':') {
2832 if (!OPTS_FLAG(LOOP_LABELS))
2833 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2834 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2835 parseerror(parser, "expected loop label");
2838 label = util_strdup(parser_tokval(parser));
2839 if (!parser_next(parser)) {
2841 parseerror(parser, "expected 'switch' operand in parenthesis");
2846 if (parser->tok != '(') {
2847 parseerror(parser, "expected 'switch' operand in parenthesis");
2851 vec_push(parser->breaks, label);
2853 rv = parse_switch_go(parser, block, out);
2856 if (vec_last(parser->breaks) != label) {
2857 parseerror(parser, "internal error: label stack corrupted");
2863 vec_pop(parser->breaks);
2868 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out)
2870 ast_expression *operand;
2873 ast_switch *switchnode;
2874 ast_switch_case swcase;
2877 bool noref, is_static;
2878 uint32_t qflags = 0;
2880 lex_ctx ctx = parser_ctx(parser);
2882 (void)block; /* not touching */
2885 /* parse into the expression */
2886 if (!parser_next(parser)) {
2887 parseerror(parser, "expected switch operand");
2890 /* parse the operand */
2891 operand = parse_expression_leave(parser, false, false, false);
2895 switchnode = ast_switch_new(ctx, operand);
2898 if (parser->tok != ')') {
2899 ast_delete(switchnode);
2900 parseerror(parser, "expected closing paren after 'switch' operand");
2904 /* parse over the opening paren */
2905 if (!parser_next(parser) || parser->tok != '{') {
2906 ast_delete(switchnode);
2907 parseerror(parser, "expected list of cases");
2911 if (!parser_next(parser)) {
2912 ast_delete(switchnode);
2913 parseerror(parser, "expected 'case' or 'default'");
2917 /* new block; allow some variables to be declared here */
2918 parser_enterblock(parser);
2921 if (parser->tok == TOKEN_IDENT)
2922 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2923 if (typevar || parser->tok == TOKEN_TYPENAME) {
2924 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL)) {
2925 ast_delete(switchnode);
2930 if (parse_qualifiers(parser, true, &cvq, &noref, &is_static, &qflags, NULL))
2932 if (cvq == CV_WRONG) {
2933 ast_delete(switchnode);
2936 if (!parse_variable(parser, block, false, cvq, NULL, noref, is_static, qflags, NULL)) {
2937 ast_delete(switchnode);
2946 while (parser->tok != '}') {
2947 ast_block *caseblock;
2949 if (!strcmp(parser_tokval(parser), "case")) {
2950 if (!parser_next(parser)) {
2951 ast_delete(switchnode);
2952 parseerror(parser, "expected expression for case");
2955 swcase.value = parse_expression_leave(parser, false, false, false);
2956 if (!swcase.value) {
2957 ast_delete(switchnode);
2958 parseerror(parser, "expected expression for case");
2961 if (!OPTS_FLAG(RELAXED_SWITCH)) {
2962 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
2963 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
2969 else if (!strcmp(parser_tokval(parser), "default")) {
2970 swcase.value = NULL;
2971 if (!parser_next(parser)) {
2972 ast_delete(switchnode);
2973 parseerror(parser, "expected colon");
2978 ast_delete(switchnode);
2979 parseerror(parser, "expected 'case' or 'default'");
2983 /* Now the colon and body */
2984 if (parser->tok != ':') {
2985 if (swcase.value) ast_unref(swcase.value);
2986 ast_delete(switchnode);
2987 parseerror(parser, "expected colon");
2991 if (!parser_next(parser)) {
2992 if (swcase.value) ast_unref(swcase.value);
2993 ast_delete(switchnode);
2994 parseerror(parser, "expected statements or case");
2997 caseblock = ast_block_new(parser_ctx(parser));
2999 if (swcase.value) ast_unref(swcase.value);
3000 ast_delete(switchnode);
3003 swcase.code = (ast_expression*)caseblock;
3004 vec_push(switchnode->cases, swcase);
3006 ast_expression *expr;
3007 if (parser->tok == '}')
3009 if (parser->tok == TOKEN_KEYWORD) {
3010 if (!strcmp(parser_tokval(parser), "case") ||
3011 !strcmp(parser_tokval(parser), "default"))
3016 if (!parse_statement(parser, caseblock, &expr, true)) {
3017 ast_delete(switchnode);
3022 if (!ast_block_add_expr(caseblock, expr)) {
3023 ast_delete(switchnode);
3029 parser_leaveblock(parser);
3032 if (parser->tok != '}') {
3033 ast_delete(switchnode);
3034 parseerror(parser, "expected closing paren of case list");
3037 if (!parser_next(parser)) {
3038 ast_delete(switchnode);
3039 parseerror(parser, "parse error after switch");
3042 *out = (ast_expression*)switchnode;
3046 /* parse computed goto sides */
3047 static ast_expression *parse_goto_computed(parser_t *parser, ast_expression **side) {
3048 ast_expression *on_true;
3049 ast_expression *on_false;
3050 ast_expression *cond;
3055 if (ast_istype(*side, ast_ternary)) {
3056 ast_ternary *tern = (ast_ternary*)*side;
3057 on_true = parse_goto_computed(parser, &tern->on_true);
3058 on_false = parse_goto_computed(parser, &tern->on_false);
3060 if (!on_true || !on_false) {
3061 parseerror(parser, "expected label or expression in ternary");
3062 if (on_true) ast_unref(on_true);
3063 if (on_false) ast_unref(on_false);
3071 return (ast_expression*)ast_ifthen_new(parser_ctx(parser), cond, on_true, on_false);
3072 } else if (ast_istype(*side, ast_label)) {
3073 ast_goto *gt = ast_goto_new(parser_ctx(parser), ((ast_label*)*side)->name);
3074 ast_goto_set_label(gt, ((ast_label*)*side));
3076 return (ast_expression*)gt;
3081 static bool parse_goto(parser_t *parser, ast_expression **out)
3083 ast_goto *gt = NULL;
3084 ast_expression *lbl;
3086 if (!parser_next(parser))
3089 if (parser->tok != TOKEN_IDENT) {
3090 ast_expression *expression;
3092 /* could be an expression i.e computed goto :-) */
3093 if (parser->tok != '(') {
3094 parseerror(parser, "expected label name after `goto`");
3098 /* failed to parse expression for goto */
3099 if (!(expression = parse_expression(parser, false, true)) ||
3100 !(*out = parse_goto_computed(parser, &expression))) {
3101 parseerror(parser, "invalid goto expression");
3102 ast_unref(expression);
3109 /* not computed goto */
3110 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
3111 lbl = parser_find_label(parser, gt->name);
3113 if (!ast_istype(lbl, ast_label)) {
3114 parseerror(parser, "internal error: label is not an ast_label");
3118 ast_goto_set_label(gt, (ast_label*)lbl);
3121 vec_push(parser->gotos, gt);
3123 if (!parser_next(parser) || parser->tok != ';') {
3124 parseerror(parser, "semicolon expected after goto label");
3127 if (!parser_next(parser)) {
3128 parseerror(parser, "parse error after goto");
3132 *out = (ast_expression*)gt;
3136 static bool parse_skipwhite(parser_t *parser)
3139 if (!parser_next(parser))
3141 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
3142 return parser->tok < TOKEN_ERROR;
3145 static bool parse_eol(parser_t *parser)
3147 if (!parse_skipwhite(parser))
3149 return parser->tok == TOKEN_EOL;
3152 static bool parse_pragma_do(parser_t *parser)
3154 if (!parser_next(parser) ||
3155 parser->tok != TOKEN_IDENT ||
3156 strcmp(parser_tokval(parser), "pragma"))
3158 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
3161 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
3162 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
3166 if (!strcmp(parser_tokval(parser), "noref")) {
3167 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
3168 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
3171 parser->noref = !!parser_token(parser)->constval.i;
3172 if (!parse_eol(parser)) {
3173 parseerror(parser, "parse error after `noref` pragma");
3179 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
3186 static bool parse_pragma(parser_t *parser)
3189 parser->lex->flags.preprocessing = true;
3190 parser->lex->flags.mergelines = true;
3191 rv = parse_pragma_do(parser);
3192 if (parser->tok != TOKEN_EOL) {
3193 parseerror(parser, "junk after pragma");
3196 parser->lex->flags.preprocessing = false;
3197 parser->lex->flags.mergelines = false;
3198 if (!parser_next(parser)) {
3199 parseerror(parser, "parse error after pragma");
3205 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
3207 bool noref, is_static;
3209 uint32_t qflags = 0;
3210 ast_value *typevar = NULL;
3211 char *vstring = NULL;
3215 if (parser->tok == TOKEN_IDENT)
3216 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3218 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
3220 /* local variable */
3222 parseerror(parser, "cannot declare a variable from here");
3225 if (opts.standard == COMPILER_QCC) {
3226 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
3229 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL))
3233 else if (parse_qualifiers(parser, !!block, &cvq, &noref, &is_static, &qflags, &vstring))
3235 if (cvq == CV_WRONG)
3237 return parse_variable(parser, block, true, cvq, NULL, noref, is_static, qflags, vstring);
3239 else if (parser->tok == TOKEN_KEYWORD)
3241 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
3246 if (!parser_next(parser)) {
3247 parseerror(parser, "parse error after __builtin_debug_printtype");
3251 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
3253 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
3254 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
3255 if (!parser_next(parser)) {
3256 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
3262 if (!parse_statement(parser, block, out, allow_cases))
3265 con_out("__builtin_debug_printtype: got no output node\n");
3268 ast_type_to_string(*out, ty, sizeof(ty));
3269 con_out("__builtin_debug_printtype: `%s`\n", ty);
3274 else if (!strcmp(parser_tokval(parser), "return"))
3276 return parse_return(parser, block, out);
3278 else if (!strcmp(parser_tokval(parser), "if"))
3280 return parse_if(parser, block, out);
3282 else if (!strcmp(parser_tokval(parser), "while"))
3284 return parse_while(parser, block, out);
3286 else if (!strcmp(parser_tokval(parser), "do"))
3288 return parse_dowhile(parser, block, out);
3290 else if (!strcmp(parser_tokval(parser), "for"))
3292 if (opts.standard == COMPILER_QCC) {
3293 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
3296 return parse_for(parser, block, out);
3298 else if (!strcmp(parser_tokval(parser), "break"))
3300 return parse_break_continue(parser, block, out, false);
3302 else if (!strcmp(parser_tokval(parser), "continue"))
3304 return parse_break_continue(parser, block, out, true);
3306 else if (!strcmp(parser_tokval(parser), "switch"))
3308 return parse_switch(parser, block, out);
3310 else if (!strcmp(parser_tokval(parser), "case") ||
3311 !strcmp(parser_tokval(parser), "default"))
3314 parseerror(parser, "unexpected 'case' label");
3319 else if (!strcmp(parser_tokval(parser), "goto"))
3321 return parse_goto(parser, out);
3323 else if (!strcmp(parser_tokval(parser), "typedef"))
3325 if (!parser_next(parser)) {
3326 parseerror(parser, "expected type definition after 'typedef'");
3329 return parse_typedef(parser);
3331 parseerror(parser, "Unexpected keyword");
3334 else if (parser->tok == '{')
3337 inner = parse_block(parser);
3340 *out = (ast_expression*)inner;
3343 else if (parser->tok == ':')
3347 if (!parser_next(parser)) {
3348 parseerror(parser, "expected label name");
3351 if (parser->tok != TOKEN_IDENT) {
3352 parseerror(parser, "label must be an identifier");
3355 label = (ast_label*)parser_find_label(parser, parser_tokval(parser));
3357 if (!label->undefined) {
3358 parseerror(parser, "label `%s` already defined", label->name);
3361 label->undefined = false;
3364 label = ast_label_new(parser_ctx(parser), parser_tokval(parser), false);
3365 vec_push(parser->labels, label);
3367 *out = (ast_expression*)label;
3368 if (!parser_next(parser)) {
3369 parseerror(parser, "parse error after label");
3372 for (i = 0; i < vec_size(parser->gotos); ++i) {
3373 if (!strcmp(parser->gotos[i]->name, label->name)) {
3374 ast_goto_set_label(parser->gotos[i], label);
3375 vec_remove(parser->gotos, i, 1);
3381 else if (parser->tok == ';')
3383 if (!parser_next(parser)) {
3384 parseerror(parser, "parse error after empty statement");
3391 ast_expression *exp = parse_expression(parser, false, false);
3395 if (!ast_side_effects(exp)) {
3396 if (genwarning(ast_ctx(exp), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
3403 static bool parse_block_into(parser_t *parser, ast_block *block)
3407 parser_enterblock(parser);
3409 if (!parser_next(parser)) { /* skip the '{' */
3410 parseerror(parser, "expected function body");
3414 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
3416 ast_expression *expr = NULL;
3417 if (parser->tok == '}')
3420 if (!parse_statement(parser, block, &expr, false)) {
3421 /* parseerror(parser, "parse error"); */
3427 if (!ast_block_add_expr(block, expr)) {
3434 if (parser->tok != '}') {
3437 (void)parser_next(parser);
3441 if (!parser_leaveblock(parser))
3443 return retval && !!block;
3446 static ast_block* parse_block(parser_t *parser)
3449 block = ast_block_new(parser_ctx(parser));
3452 if (!parse_block_into(parser, block)) {
3453 ast_block_delete(block);
3459 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
3461 if (parser->tok == '{') {
3462 *out = (ast_expression*)parse_block(parser);
3465 return parse_statement(parser, NULL, out, false);
3468 static bool create_vector_members(ast_value *var, ast_member **me)
3471 size_t len = strlen(var->name);
3473 for (i = 0; i < 3; ++i) {
3474 char *name = (char*)mem_a(len+3);
3475 memcpy(name, var->name, len);
3477 name[len+1] = 'x'+i;
3479 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
3488 do { ast_member_delete(me[--i]); } while(i);
3492 static bool parse_function_body(parser_t *parser, ast_value *var)
3494 ast_block *block = NULL;
3499 ast_expression *framenum = NULL;
3500 ast_expression *nextthink = NULL;
3501 /* None of the following have to be deleted */
3502 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
3503 ast_expression *gbl_time = NULL, *gbl_self = NULL;
3504 bool has_frame_think;
3508 has_frame_think = false;
3509 old = parser->function;
3511 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
3512 parseerror(parser, "gotos/labels leaking");
3516 if (var->expression.flags & AST_FLAG_VARIADIC) {
3517 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
3518 "variadic function with implementation will not be able to access additional parameters"))
3524 if (parser->tok == '[') {
3525 /* got a frame definition: [ framenum, nextthink ]
3526 * this translates to:
3527 * self.frame = framenum;
3528 * self.nextthink = time + 0.1;
3529 * self.think = nextthink;
3533 fld_think = parser_find_field(parser, "think");
3534 fld_nextthink = parser_find_field(parser, "nextthink");
3535 fld_frame = parser_find_field(parser, "frame");
3536 if (!fld_think || !fld_nextthink || !fld_frame) {
3537 parseerror(parser, "cannot use [frame,think] notation without the required fields");
3538 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
3541 gbl_time = parser_find_global(parser, "time");
3542 gbl_self = parser_find_global(parser, "self");
3543 if (!gbl_time || !gbl_self) {
3544 parseerror(parser, "cannot use [frame,think] notation without the required globals");
3545 parseerror(parser, "please declare the following globals: `time`, `self`");
3549 if (!parser_next(parser))
3552 framenum = parse_expression_leave(parser, true, false, false);
3554 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
3557 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
3558 ast_unref(framenum);
3559 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
3563 if (parser->tok != ',') {
3564 ast_unref(framenum);
3565 parseerror(parser, "expected comma after frame number in [frame,think] notation");
3566 parseerror(parser, "Got a %i\n", parser->tok);
3570 if (!parser_next(parser)) {
3571 ast_unref(framenum);
3575 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
3577 /* qc allows the use of not-yet-declared functions here
3578 * - this automatically creates a prototype */
3579 ast_value *thinkfunc;
3580 ast_expression *functype = fld_think->expression.next;
3582 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
3583 if (!thinkfunc || !ast_type_adopt(thinkfunc, functype)) {
3584 ast_unref(framenum);
3585 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
3589 if (!parser_next(parser)) {
3590 ast_unref(framenum);
3591 ast_delete(thinkfunc);
3595 vec_push(parser->globals, (ast_expression*)thinkfunc);
3596 util_htset(parser->htglobals, thinkfunc->name, thinkfunc);
3598 nextthink = (ast_expression*)thinkfunc;
3601 nextthink = parse_expression_leave(parser, true, false, false);
3603 ast_unref(framenum);
3604 parseerror(parser, "expected a think-function in [frame,think] notation");
3609 if (!ast_istype(nextthink, ast_value)) {
3610 parseerror(parser, "think-function in [frame,think] notation must be a constant");
3614 if (retval && parser->tok != ']') {
3615 parseerror(parser, "expected closing `]` for [frame,think] notation");
3619 if (retval && !parser_next(parser)) {
3623 if (retval && parser->tok != '{') {
3624 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
3629 ast_unref(nextthink);
3630 ast_unref(framenum);
3634 has_frame_think = true;
3637 block = ast_block_new(parser_ctx(parser));
3639 parseerror(parser, "failed to allocate block");
3640 if (has_frame_think) {
3641 ast_unref(nextthink);
3642 ast_unref(framenum);
3647 if (has_frame_think) {
3649 ast_expression *self_frame;
3650 ast_expression *self_nextthink;
3651 ast_expression *self_think;
3652 ast_expression *time_plus_1;
3653 ast_store *store_frame;
3654 ast_store *store_nextthink;
3655 ast_store *store_think;
3657 ctx = parser_ctx(parser);
3658 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
3659 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
3660 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
3662 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
3663 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
3665 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
3666 if (self_frame) ast_delete(self_frame);
3667 if (self_nextthink) ast_delete(self_nextthink);
3668 if (self_think) ast_delete(self_think);
3669 if (time_plus_1) ast_delete(time_plus_1);
3675 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
3676 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
3677 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
3680 ast_delete(self_frame);
3683 if (!store_nextthink) {
3684 ast_delete(self_nextthink);
3688 ast_delete(self_think);
3692 if (store_frame) ast_delete(store_frame);
3693 if (store_nextthink) ast_delete(store_nextthink);
3694 if (store_think) ast_delete(store_think);
3697 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
3698 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
3699 !ast_block_add_expr(block, (ast_expression*)store_think))
3706 parseerror(parser, "failed to generate code for [frame,think]");
3707 ast_unref(nextthink);
3708 ast_unref(framenum);
3714 parser_enterblock(parser);
3716 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
3718 ast_value *param = var->expression.params[parami];
3721 if (param->expression.vtype != TYPE_VECTOR &&
3722 (param->expression.vtype != TYPE_FIELD ||
3723 param->expression.next->expression.vtype != TYPE_VECTOR))
3728 if (!create_vector_members(param, me)) {
3729 ast_block_delete(block);
3733 for (e = 0; e < 3; ++e) {
3734 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
3735 ast_block_collect(block, (ast_expression*)me[e]);
3739 func = ast_function_new(ast_ctx(var), var->name, var);
3741 parseerror(parser, "failed to allocate function for `%s`", var->name);
3742 ast_block_delete(block);
3745 vec_push(parser->functions, func);
3747 parser->function = func;
3748 if (!parse_block_into(parser, block)) {
3749 ast_block_delete(block);
3753 vec_push(func->blocks, block);
3755 parser->function = old;
3756 if (!parser_leaveblock(parser))
3758 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
3759 parseerror(parser, "internal error: local scopes left");
3763 if (parser->tok == ';')
3764 return parser_next(parser);
3765 else if (opts.standard == COMPILER_QCC)
3766 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
3770 vec_pop(parser->functions);
3771 ast_function_delete(func);
3772 var->constval.vfunc = NULL;
3775 (void)!parser_leaveblock(parser);
3776 parser->function = old;
3780 static ast_expression *array_accessor_split(
3785 ast_expression *left,
3786 ast_expression *right
3792 lex_ctx ctx = ast_ctx(array);
3794 if (!left || !right) {
3795 if (left) ast_delete(left);
3796 if (right) ast_delete(right);
3800 cmp = ast_binary_new(ctx, INSTR_LT,
3801 (ast_expression*)index,
3802 (ast_expression*)parser_const_float(parser, middle));
3806 parseerror(parser, "internal error: failed to create comparison for array setter");
3810 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
3812 ast_delete(cmp); /* will delete left and right */
3813 parseerror(parser, "internal error: failed to create conditional jump for array setter");
3817 return (ast_expression*)ifthen;
3820 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
3822 lex_ctx ctx = ast_ctx(array);
3824 if (from+1 == afterend) {
3825 /* set this value */
3828 ast_array_index *subscript;
3830 int assignop = type_store_instr[value->expression.vtype];
3832 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3833 assignop = INSTR_STORE_V;
3835 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3839 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
3841 ast_delete(subscript);
3845 block = ast_block_new(ctx);
3851 if (!ast_block_add_expr(block, (ast_expression*)st)) {
3856 ret = ast_return_new(ctx, NULL);
3862 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
3867 return (ast_expression*)block;
3869 ast_expression *left, *right;
3870 size_t diff = afterend - from;
3871 size_t middle = from + diff/2;
3872 left = array_setter_node(parser, array, index, value, from, middle);
3873 right = array_setter_node(parser, array, index, value, middle, afterend);
3874 return array_accessor_split(parser, array, index, middle, left, right);
3878 static ast_expression *array_field_setter_node(
3887 lex_ctx ctx = ast_ctx(array);
3889 if (from+1 == afterend) {
3890 /* set this value */
3893 ast_entfield *entfield;
3894 ast_array_index *subscript;
3896 int assignop = type_storep_instr[value->expression.vtype];
3898 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3899 assignop = INSTR_STOREP_V;
3901 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3905 entfield = ast_entfield_new_force(ctx,
3906 (ast_expression*)entity,
3907 (ast_expression*)subscript,
3908 (ast_expression*)subscript);
3910 ast_delete(subscript);
3914 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
3916 ast_delete(entfield);
3920 block = ast_block_new(ctx);
3926 if (!ast_block_add_expr(block, (ast_expression*)st)) {
3931 ret = ast_return_new(ctx, NULL);
3937 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
3942 return (ast_expression*)block;
3944 ast_expression *left, *right;
3945 size_t diff = afterend - from;
3946 size_t middle = from + diff/2;
3947 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
3948 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
3949 return array_accessor_split(parser, array, index, middle, left, right);
3953 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
3955 lex_ctx ctx = ast_ctx(array);
3957 if (from+1 == afterend) {
3959 ast_array_index *subscript;
3961 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3965 ret = ast_return_new(ctx, (ast_expression*)subscript);
3967 ast_delete(subscript);
3971 return (ast_expression*)ret;
3973 ast_expression *left, *right;
3974 size_t diff = afterend - from;
3975 size_t middle = from + diff/2;
3976 left = array_getter_node(parser, array, index, from, middle);
3977 right = array_getter_node(parser, array, index, middle, afterend);
3978 return array_accessor_split(parser, array, index, middle, left, right);
3982 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
3984 ast_function *func = NULL;
3985 ast_value *fval = NULL;
3986 ast_block *body = NULL;
3988 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
3990 parseerror(parser, "failed to create accessor function value");
3994 func = ast_function_new(ast_ctx(array), funcname, fval);
3997 parseerror(parser, "failed to create accessor function node");
4001 body = ast_block_new(ast_ctx(array));
4003 parseerror(parser, "failed to create block for array accessor");
4009 vec_push(func->blocks, body);
4012 vec_push(parser->accessors, fval);
4017 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
4019 ast_expression *root = NULL;
4020 ast_value *index = NULL;
4021 ast_value *value = NULL;
4025 if (!ast_istype(array->expression.next, ast_value)) {
4026 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4030 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4032 func = fval->constval.vfunc;
4033 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4035 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4036 value = ast_value_copy((ast_value*)array->expression.next);
4038 if (!index || !value) {
4039 parseerror(parser, "failed to create locals for array accessor");
4042 (void)!ast_value_set_name(value, "value"); /* not important */
4043 vec_push(fval->expression.params, index);
4044 vec_push(fval->expression.params, value);
4046 root = array_setter_node(parser, array, index, value, 0, array->expression.count);
4048 parseerror(parser, "failed to build accessor search tree");
4052 array->setter = fval;
4053 return ast_block_add_expr(func->blocks[0], root);
4055 if (index) ast_delete(index);
4056 if (value) ast_delete(value);
4057 if (root) ast_delete(root);
4063 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
4065 ast_expression *root = NULL;
4066 ast_value *entity = NULL;
4067 ast_value *index = NULL;
4068 ast_value *value = NULL;
4072 if (!ast_istype(array->expression.next, ast_value)) {
4073 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4077 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4079 func = fval->constval.vfunc;
4080 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4082 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
4083 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4084 value = ast_value_copy((ast_value*)array->expression.next);
4085 if (!entity || !index || !value) {
4086 parseerror(parser, "failed to create locals for array accessor");
4089 (void)!ast_value_set_name(value, "value"); /* not important */
4090 vec_push(fval->expression.params, entity);
4091 vec_push(fval->expression.params, index);
4092 vec_push(fval->expression.params, value);
4094 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
4096 parseerror(parser, "failed to build accessor search tree");
4100 array->setter = fval;
4101 return ast_block_add_expr(func->blocks[0], root);
4103 if (entity) ast_delete(entity);
4104 if (index) ast_delete(index);
4105 if (value) ast_delete(value);
4106 if (root) ast_delete(root);
4112 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4114 ast_expression *root = NULL;
4115 ast_value *index = NULL;
4119 /* NOTE: checking array->expression.next rather than elemtype since
4120 * for fields elemtype is a temporary fieldtype.
4122 if (!ast_istype(array->expression.next, ast_value)) {
4123 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4127 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4129 func = fval->constval.vfunc;
4130 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
4132 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4135 parseerror(parser, "failed to create locals for array accessor");
4138 vec_push(fval->expression.params, index);
4140 root = array_getter_node(parser, array, index, 0, array->expression.count);
4142 parseerror(parser, "failed to build accessor search tree");
4146 array->getter = fval;
4147 return ast_block_add_expr(func->blocks[0], root);
4149 if (index) ast_delete(index);
4150 if (root) ast_delete(root);
4156 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
4157 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
4165 bool variadic = false;
4167 ctx = parser_ctx(parser);
4169 /* for the sake of less code we parse-in in this function */
4170 if (!parser_next(parser)) {
4171 parseerror(parser, "expected parameter list");
4177 /* parse variables until we hit a closing paren */
4178 while (parser->tok != ')') {
4180 /* there must be commas between them */
4181 if (parser->tok != ',') {
4182 parseerror(parser, "expected comma or end of parameter list");
4185 if (!parser_next(parser)) {
4186 parseerror(parser, "expected parameter");
4192 if (parser->tok == TOKEN_DOTS) {
4193 /* '...' indicates a varargs function */
4195 if (!parser_next(parser)) {
4196 parseerror(parser, "expected parameter");
4199 if (parser->tok != ')') {
4200 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4206 /* for anything else just parse a typename */
4207 param = parse_typename(parser, NULL, NULL);
4210 vec_push(params, param);
4211 if (param->expression.vtype >= TYPE_VARIANT) {
4212 char tname[1024]; /* typename is reserved in C++ */
4213 ast_type_to_string((ast_expression*)param, tname, sizeof(tname));
4214 parseerror(parser, "type not supported as part of a parameter list: %s", tname);
4220 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
4224 if (vec_size(params) > 8 && opts.standard == COMPILER_QCC)
4225 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
4228 if (!parser_next(parser)) {
4229 parseerror(parser, "parse error after typename");
4233 /* now turn 'var' into a function type */
4234 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
4235 fval->expression.next = (ast_expression*)var;
4237 fval->expression.flags |= AST_FLAG_VARIADIC;
4240 var->expression.params = params;
4247 for (i = 0; i < vec_size(params); ++i)
4248 ast_delete(params[i]);
4253 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
4255 ast_expression *cexp;
4256 ast_value *cval, *tmp;
4259 ctx = parser_ctx(parser);
4261 if (!parser_next(parser)) {
4263 parseerror(parser, "expected array-size");
4267 cexp = parse_expression_leave(parser, true, false, false);
4269 if (!cexp || !ast_istype(cexp, ast_value)) {
4273 parseerror(parser, "expected array-size as constant positive integer");
4276 cval = (ast_value*)cexp;
4278 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
4279 tmp->expression.next = (ast_expression*)var;
4282 if (cval->expression.vtype == TYPE_INTEGER)
4283 tmp->expression.count = cval->constval.vint;
4284 else if (cval->expression.vtype == TYPE_FLOAT)
4285 tmp->expression.count = cval->constval.vfloat;
4289 parseerror(parser, "array-size must be a positive integer constant");
4294 if (parser->tok != ']') {
4296 parseerror(parser, "expected ']' after array-size");
4299 if (!parser_next(parser)) {
4301 parseerror(parser, "error after parsing array size");
4307 /* Parse a complete typename.
4308 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
4309 * but when parsing variables separated by comma
4310 * 'storebase' should point to where the base-type should be kept.
4311 * The base type makes up every bit of type information which comes *before* the
4314 * The following will be parsed in its entirety:
4316 * The 'basetype' in this case is 'void()'
4317 * and if there's a comma after it, say:
4319 * then the type-information 'void()' can be stored in 'storebase'
4321 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
4323 ast_value *var, *tmp;
4326 const char *name = NULL;
4327 bool isfield = false;
4328 bool wasarray = false;
4329 size_t morefields = 0;
4331 ctx = parser_ctx(parser);
4333 /* types may start with a dot */
4334 if (parser->tok == '.') {
4336 /* if we parsed a dot we need a typename now */
4337 if (!parser_next(parser)) {
4338 parseerror(parser, "expected typename for field definition");
4342 /* Further dots are handled seperately because they won't be part of the
4345 while (parser->tok == '.') {
4347 if (!parser_next(parser)) {
4348 parseerror(parser, "expected typename for field definition");
4353 if (parser->tok == TOKEN_IDENT)
4354 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
4355 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
4356 parseerror(parser, "expected typename");
4360 /* generate the basic type value */
4361 if (cached_typedef) {
4362 var = ast_value_copy(cached_typedef);
4363 ast_value_set_name(var, "<type(from_def)>");
4365 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
4367 for (; morefields; --morefields) {
4368 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
4369 tmp->expression.next = (ast_expression*)var;
4373 /* do not yet turn into a field - remember:
4374 * .void() foo; is a field too
4375 * .void()() foo; is a function
4379 if (!parser_next(parser)) {
4381 parseerror(parser, "parse error after typename");
4385 /* an opening paren now starts the parameter-list of a function
4386 * this is where original-QC has parameter lists.
4387 * We allow a single parameter list here.
4388 * Much like fteqcc we don't allow `float()() x`
4390 if (parser->tok == '(') {
4391 var = parse_parameter_list(parser, var);
4396 /* store the base if requested */
4398 *storebase = ast_value_copy(var);
4400 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4401 tmp->expression.next = (ast_expression*)*storebase;
4406 /* there may be a name now */
4407 if (parser->tok == TOKEN_IDENT) {
4408 name = util_strdup(parser_tokval(parser));
4410 if (!parser_next(parser)) {
4412 parseerror(parser, "error after variable or field declaration");
4417 /* now this may be an array */
4418 if (parser->tok == '[') {
4420 var = parse_arraysize(parser, var);
4425 /* This is the point where we can turn it into a field */
4427 /* turn it into a field if desired */
4428 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4429 tmp->expression.next = (ast_expression*)var;
4433 /* now there may be function parens again */
4434 if (parser->tok == '(' && opts.standard == COMPILER_QCC)
4435 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4436 if (parser->tok == '(' && wasarray)
4437 parseerror(parser, "arrays as part of a return type is not supported");
4438 while (parser->tok == '(') {
4439 var = parse_parameter_list(parser, var);
4448 /* finally name it */
4450 if (!ast_value_set_name(var, name)) {
4452 parseerror(parser, "internal error: failed to set name");
4455 /* free the name, ast_value_set_name duplicates */
4462 static bool parse_typedef(parser_t *parser)
4464 ast_value *typevar, *oldtype;
4465 ast_expression *old;
4467 typevar = parse_typename(parser, NULL, NULL);
4472 if ( (old = parser_find_var(parser, typevar->name)) ) {
4473 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
4474 " -> `%s` has been declared here: %s:%i",
4475 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
4476 ast_delete(typevar);
4480 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
4481 parseerror(parser, "type `%s` has already been declared here: %s:%i",
4482 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
4483 ast_delete(typevar);
4487 vec_push(parser->_typedefs, typevar);
4488 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
4490 if (parser->tok != ';') {
4491 parseerror(parser, "expected semicolon after typedef");
4494 if (!parser_next(parser)) {
4495 parseerror(parser, "parse error after typedef");
4502 static const char *cvq_to_str(int cvq) {
4504 case CV_NONE: return "none";
4505 case CV_VAR: return "`var`";
4506 case CV_CONST: return "`const`";
4507 default: return "<INVALID>";
4511 static bool parser_check_qualifiers(parser_t *parser, const ast_value *var, const ast_value *proto)
4514 if (proto->cvq != var->cvq) {
4515 if (!(proto->cvq == CV_CONST && var->cvq == CV_NONE &&
4516 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
4517 parser->tok == '='))
4519 return !parsewarning(parser, WARN_DIFFERENT_QUALIFIERS,
4520 "`%s` declared with different qualifiers: %s\n"
4521 " -> previous declaration here: %s:%i uses %s",
4522 var->name, cvq_to_str(var->cvq),
4523 ast_ctx(proto).file, ast_ctx(proto).line,
4524 cvq_to_str(proto->cvq));
4527 av = (var ->expression.flags & AST_FLAG_NORETURN);
4528 ao = (proto->expression.flags & AST_FLAG_NORETURN);
4530 return !parsewarning(parser, WARN_DIFFERENT_ATTRIBUTES,
4531 "`%s` declared with different attributes%s\n"
4532 " -> previous declaration here: %s:%i",
4533 var->name, (av ? ": noreturn" : ""),
4534 ast_ctx(proto).file, ast_ctx(proto).line,
4535 (ao ? ": noreturn" : ""));
4540 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)
4544 ast_expression *old;
4548 ast_value *basetype = NULL;
4550 bool isparam = false;
4551 bool isvector = false;
4552 bool cleanvar = true;
4553 bool wasarray = false;
4557 if (!localblock && is_static)
4558 parseerror(parser, "`static` qualifier is not supported in global scope");
4560 /* get the first complete variable */
4561 var = parse_typename(parser, &basetype, cached_typedef);
4564 ast_delete(basetype);
4572 /* Part 0: finish the type */
4573 if (parser->tok == '(') {
4574 if (opts.standard == COMPILER_QCC)
4575 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4576 var = parse_parameter_list(parser, var);
4582 /* we only allow 1-dimensional arrays */
4583 if (parser->tok == '[') {
4585 var = parse_arraysize(parser, var);
4591 if (parser->tok == '(' && wasarray) {
4592 parseerror(parser, "arrays as part of a return type is not supported");
4593 /* we'll still parse the type completely for now */
4595 /* for functions returning functions */
4596 while (parser->tok == '(') {
4597 if (opts.standard == COMPILER_QCC)
4598 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4599 var = parse_parameter_list(parser, var);
4606 var->cvq = qualifier;
4607 var->expression.flags |= qflags;
4608 if (var->expression.flags & AST_FLAG_DEPRECATED)
4609 var->desc = vstring;
4612 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
4613 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
4614 * is then filled with the previous definition and the parameter-names replaced.
4616 if (!strcmp(var->name, "nil")) {
4617 if (OPTS_FLAG(UNTYPED_NIL)) {
4618 if (!localblock || !OPTS_FLAG(PERMISSIVE))
4619 parseerror(parser, "name `nil` not allowed (try -fpermissive)");
4621 (void)!parsewarning(parser, WARN_RESERVED_NAMES, "variable name `nil` is reserved");
4624 /* Deal with end_sys_ vars */
4626 if (!strcmp(var->name, "end_sys_globals")) {
4628 parser->crc_globals = vec_size(parser->globals);
4631 else if (!strcmp(var->name, "end_sys_fields")) {
4633 parser->crc_fields = vec_size(parser->fields);
4636 if (was_end && var->expression.vtype == TYPE_FIELD) {
4637 if (parsewarning(parser, WARN_END_SYS_FIELDS,
4638 "global '%s' hint should not be a field",
4639 parser_tokval(parser)))
4646 if (!nofields && var->expression.vtype == TYPE_FIELD)
4648 /* deal with field declarations */
4649 old = parser_find_field(parser, var->name);
4651 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
4652 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
4661 parseerror(parser, "field `%s` already declared here: %s:%i",
4662 var->name, ast_ctx(old).file, ast_ctx(old).line);
4667 if (opts.standard == COMPILER_QCC &&
4668 (old = parser_find_global(parser, var->name)))
4670 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
4671 parseerror(parser, "field `%s` already declared here: %s:%i",
4672 var->name, ast_ctx(old).file, ast_ctx(old).line);
4679 /* deal with other globals */
4680 old = parser_find_global(parser, var->name);
4681 if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
4683 /* This is a function which had a prototype */
4684 if (!ast_istype(old, ast_value)) {
4685 parseerror(parser, "internal error: prototype is not an ast_value");
4689 proto = (ast_value*)old;
4690 proto->desc = var->desc;
4691 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
4692 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
4694 ast_ctx(proto).file, ast_ctx(proto).line);
4698 /* we need the new parameter-names */
4699 for (i = 0; i < vec_size(proto->expression.params); ++i)
4700 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
4701 if (!parser_check_qualifiers(parser, var, proto)) {
4708 proto->expression.flags |= var->expression.flags;
4716 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
4717 "global `%s` already declared here: %s:%i",
4718 var->name, ast_ctx(old).file, ast_ctx(old).line))
4723 proto = (ast_value*)old;
4724 if (!ast_istype(old, ast_value)) {
4725 parseerror(parser, "internal error: not an ast_value");
4730 if (!parser_check_qualifiers(parser, var, proto)) {
4735 proto->expression.flags |= var->expression.flags;
4739 if (opts.standard == COMPILER_QCC &&
4740 (old = parser_find_field(parser, var->name)))
4742 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
4743 parseerror(parser, "global `%s` already declared here: %s:%i",
4744 var->name, ast_ctx(old).file, ast_ctx(old).line);
4751 else /* it's not a global */
4753 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
4754 if (old && !isparam) {
4755 parseerror(parser, "local `%s` already declared here: %s:%i",
4756 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
4760 old = parser_find_local(parser, var->name, 0, &isparam);
4761 if (old && isparam) {
4762 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
4763 "local `%s` is shadowing a parameter", var->name))
4765 parseerror(parser, "local `%s` already declared here: %s:%i",
4766 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
4770 if (opts.standard != COMPILER_GMQCC) {
4778 /* in a noref section we simply bump the usecount */
4779 if (noref || parser->noref)
4783 * Create the global/local, and deal with vector types.
4786 if (var->expression.vtype == TYPE_VECTOR)
4788 else if (var->expression.vtype == TYPE_FIELD &&
4789 var->expression.next->expression.vtype == TYPE_VECTOR)
4793 if (!create_vector_members(var, me)) {
4800 /* deal with global variables, fields, functions */
4801 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
4802 var->isfield = true;
4803 vec_push(parser->fields, (ast_expression*)var);
4804 util_htset(parser->htfields, var->name, var);
4806 for (i = 0; i < 3; ++i) {
4807 vec_push(parser->fields, (ast_expression*)me[i]);
4808 util_htset(parser->htfields, me[i]->name, me[i]);
4813 vec_push(parser->globals, (ast_expression*)var);
4814 util_htset(parser->htglobals, var->name, var);
4816 for (i = 0; i < 3; ++i) {
4817 vec_push(parser->globals, (ast_expression*)me[i]);
4818 util_htset(parser->htglobals, me[i]->name, me[i]);
4824 /* a static adds itself to be generated like any other global
4825 * but is added to the local namespace instead
4827 char *defname = NULL;
4828 size_t prefix_len, ln;
4830 ln = strlen(parser->function->name);
4831 vec_append(defname, ln, parser->function->name);
4833 vec_append(defname, 2, "::");
4834 /* remember the length up to here */
4835 prefix_len = vec_size(defname);
4837 /* Add it to the local scope */
4838 util_htset(vec_last(parser->variables), var->name, (void*)var);
4842 vec_last(parser->correct_variables),
4843 &vec_last(parser->correct_variables_score),
4847 /* now rename the global */
4848 ln = strlen(var->name);
4849 vec_append(defname, ln, var->name);
4850 ast_value_set_name(var, defname);
4852 /* push it to the to-be-generated globals */
4853 vec_push(parser->globals, (ast_expression*)var);
4855 /* same game for the vector members */
4857 for (i = 0; i < 3; ++i) {
4858 util_htset(vec_last(parser->variables), me[i]->name, (void*)(me[i]));
4862 vec_last(parser->correct_variables),
4863 &vec_last(parser->correct_variables_score),
4867 vec_shrinkto(defname, prefix_len);
4868 ln = strlen(me[i]->name);
4869 vec_append(defname, ln, me[i]->name);
4870 ast_member_set_name(me[i], defname);
4872 vec_push(parser->globals, (ast_expression*)me[i]);
4877 vec_push(localblock->locals, var);
4878 parser_addlocal(parser, var->name, (ast_expression*)var);
4880 for (i = 0; i < 3; ++i) {
4881 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
4882 ast_block_collect(localblock, (ast_expression*)me[i]);
4888 me[0] = me[1] = me[2] = NULL;
4893 if (var->expression.vtype == TYPE_ARRAY) {
4895 snprintf(name, sizeof(name), "%s##SET", var->name);
4896 if (!parser_create_array_setter(parser, var, name))
4898 snprintf(name, sizeof(name), "%s##GET", var->name);
4899 if (!parser_create_array_getter(parser, var, var->expression.next, name))
4902 else if (!localblock && !nofields &&
4903 var->expression.vtype == TYPE_FIELD &&
4904 var->expression.next->expression.vtype == TYPE_ARRAY)
4907 ast_expression *telem;
4909 ast_value *array = (ast_value*)var->expression.next;
4911 if (!ast_istype(var->expression.next, ast_value)) {
4912 parseerror(parser, "internal error: field element type must be an ast_value");
4916 snprintf(name, sizeof(name), "%s##SETF", var->name);
4917 if (!parser_create_array_field_setter(parser, array, name))
4920 telem = ast_type_copy(ast_ctx(var), array->expression.next);
4921 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
4922 tfield->expression.next = telem;
4923 snprintf(name, sizeof(name), "%s##GETFP", var->name);
4924 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
4932 if (parser->tok == ';') {
4933 ast_delete(basetype);
4934 if (!parser_next(parser)) {
4935 parseerror(parser, "error after variable declaration");
4941 if (parser->tok == ',')
4945 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
4948 parseerror(parser, "missing comma or semicolon while parsing variables");
4952 if (localblock && opts.standard == COMPILER_QCC) {
4953 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
4954 "initializing expression turns variable `%s` into a constant in this standard",
4961 if (parser->tok != '{') {
4962 if (parser->tok != '=') {
4963 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
4967 if (!parser_next(parser)) {
4968 parseerror(parser, "error parsing initializer");
4972 else if (opts.standard == COMPILER_QCC) {
4973 parseerror(parser, "expected '=' before function body in this standard");
4976 if (parser->tok == '#') {
4977 ast_function *func = NULL;
4980 parseerror(parser, "cannot declare builtins within functions");
4983 if (var->expression.vtype != TYPE_FUNCTION) {
4984 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
4987 if (!parser_next(parser)) {
4988 parseerror(parser, "expected builtin number");
4991 if (parser->tok != TOKEN_INTCONST) {
4992 parseerror(parser, "builtin number must be an integer constant");
4995 if (parser_token(parser)->constval.i < 0) {
4996 parseerror(parser, "builtin number must be an integer greater than zero");
5000 if (var->hasvalue) {
5001 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
5002 "builtin `%s` has already been defined\n"
5003 " -> previous declaration here: %s:%i",
5004 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
5008 func = ast_function_new(ast_ctx(var), var->name, var);
5010 parseerror(parser, "failed to allocate function for `%s`", var->name);
5013 vec_push(parser->functions, func);
5015 func->builtin = -parser_token(parser)->constval.i-1;
5018 if (!parser_next(parser)) {
5019 parseerror(parser, "expected comma or semicolon");
5021 ast_function_delete(func);
5022 var->constval.vfunc = NULL;
5026 else if (parser->tok == '{' || parser->tok == '[')
5029 parseerror(parser, "cannot declare functions within functions");
5034 ast_ctx(proto) = parser_ctx(parser);
5036 if (!parse_function_body(parser, var))
5038 ast_delete(basetype);
5039 for (i = 0; i < vec_size(parser->gotos); ++i)
5040 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
5041 vec_free(parser->gotos);
5042 vec_free(parser->labels);
5045 ast_expression *cexp;
5048 cexp = parse_expression_leave(parser, true, false, false);
5053 cval = (ast_value*)cexp;
5054 if (cval != parser->nil &&
5055 (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
5058 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
5062 if (!OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
5063 qualifier != CV_VAR)
5065 var->cvq = CV_CONST;
5067 if (cval == parser->nil)
5068 var->expression.flags |= AST_FLAG_INITIALIZED;
5071 var->hasvalue = true;
5072 if (cval->expression.vtype == TYPE_STRING)
5073 var->constval.vstring = parser_strdup(cval->constval.vstring);
5074 else if (cval->expression.vtype == TYPE_FIELD)
5075 var->constval.vfield = cval;
5077 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
5083 shunt sy = { NULL, NULL };
5086 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
5087 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
5088 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
5089 if (!parser_sy_apply_operator(parser, &sy))
5092 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
5093 parseerror(parser, "internal error: leaked operands");
5094 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
5104 if (parser->tok == ',') {
5105 if (!parser_next(parser)) {
5106 parseerror(parser, "expected another variable");
5110 if (parser->tok != TOKEN_IDENT) {
5111 parseerror(parser, "expected another variable");
5114 var = ast_value_copy(basetype);
5116 ast_value_set_name(var, parser_tokval(parser));
5117 if (!parser_next(parser)) {
5118 parseerror(parser, "error parsing variable declaration");
5124 if (parser->tok != ';') {
5125 parseerror(parser, "missing semicolon after variables");
5129 if (!parser_next(parser)) {
5130 parseerror(parser, "parse error after variable declaration");
5134 ast_delete(basetype);
5138 if (cleanvar && var)
5140 ast_delete(basetype);
5144 ast_delete(basetype);
5145 if (cleanvar && var)
5147 if (me[0]) ast_member_delete(me[0]);
5148 if (me[1]) ast_member_delete(me[1]);
5149 if (me[2]) ast_member_delete(me[2]);
5153 static bool parser_global_statement(parser_t *parser)
5157 bool is_static = false;
5158 uint32_t qflags = 0;
5159 ast_value *istype = NULL;
5160 char *vstring = NULL;
5162 if (parser->tok == TOKEN_IDENT)
5163 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
5165 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
5167 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false, 0, NULL);
5169 else if (parse_qualifiers(parser, false, &cvq, &noref, &is_static, &qflags, &vstring))
5171 if (cvq == CV_WRONG)
5173 return parse_variable(parser, NULL, true, cvq, NULL, noref, is_static, qflags, vstring);
5175 else if (parser->tok == TOKEN_KEYWORD)
5177 if (!strcmp(parser_tokval(parser), "typedef")) {
5178 if (!parser_next(parser)) {
5179 parseerror(parser, "expected type definition after 'typedef'");
5182 return parse_typedef(parser);
5184 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
5187 else if (parser->tok == '#')
5189 return parse_pragma(parser);
5191 else if (parser->tok == '$')
5193 if (!parser_next(parser)) {
5194 parseerror(parser, "parse error");
5200 parseerror(parser, "unexpected token: %s", parser->lex->tok.value);
5206 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
5208 return util_crc16(old, str, strlen(str));
5211 static void progdefs_crc_file(const char *str)
5213 /* write to progdefs.h here */
5217 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
5219 old = progdefs_crc_sum(old, str);
5220 progdefs_crc_file(str);
5224 static void generate_checksum(parser_t *parser)
5226 uint16_t crc = 0xFFFF;
5230 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
5231 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
5233 progdefs_crc_file("\tint\tpad;\n");
5234 progdefs_crc_file("\tint\tofs_return[3];\n");
5235 progdefs_crc_file("\tint\tofs_parm0[3];\n");
5236 progdefs_crc_file("\tint\tofs_parm1[3];\n");
5237 progdefs_crc_file("\tint\tofs_parm2[3];\n");
5238 progdefs_crc_file("\tint\tofs_parm3[3];\n");
5239 progdefs_crc_file("\tint\tofs_parm4[3];\n");
5240 progdefs_crc_file("\tint\tofs_parm5[3];\n");
5241 progdefs_crc_file("\tint\tofs_parm6[3];\n");
5242 progdefs_crc_file("\tint\tofs_parm7[3];\n");
5244 for (i = 0; i < parser->crc_globals; ++i) {
5245 if (!ast_istype(parser->globals[i], ast_value))
5247 value = (ast_value*)(parser->globals[i]);
5248 switch (value->expression.vtype) {
5249 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5250 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5251 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5252 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5254 crc = progdefs_crc_both(crc, "\tint\t");
5257 crc = progdefs_crc_both(crc, value->name);
5258 crc = progdefs_crc_both(crc, ";\n");
5260 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
5261 for (i = 0; i < parser->crc_fields; ++i) {
5262 if (!ast_istype(parser->fields[i], ast_value))
5264 value = (ast_value*)(parser->fields[i]);
5265 switch (value->expression.next->expression.vtype) {
5266 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5267 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5268 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5269 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5271 crc = progdefs_crc_both(crc, "\tint\t");
5274 crc = progdefs_crc_both(crc, value->name);
5275 crc = progdefs_crc_both(crc, ";\n");
5277 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
5282 static parser_t *parser;
5289 parser = (parser_t*)mem_a(sizeof(parser_t));
5293 memset(parser, 0, sizeof(*parser));
5295 for (i = 0; i < operator_count; ++i) {
5296 if (operators[i].id == opid1('=')) {
5297 parser->assign_op = operators+i;
5301 if (!parser->assign_op) {
5302 printf("internal error: initializing parser: failed to find assign operator\n");
5307 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
5308 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
5309 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
5310 vec_push(parser->_blocktypedefs, 0);
5312 empty_ctx.file = "<internal>";
5314 parser->nil = ast_value_new(empty_ctx, "nil", TYPE_NIL);
5315 parser->nil->cvq = CV_CONST;
5316 if (OPTS_FLAG(UNTYPED_NIL))
5317 util_htset(parser->htglobals, "nil", (void*)parser->nil);
5321 bool parser_compile()
5323 /* initial lexer/parser state */
5324 parser->lex->flags.noops = true;
5326 if (parser_next(parser))
5328 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
5330 if (!parser_global_statement(parser)) {
5331 if (parser->tok == TOKEN_EOF)
5332 parseerror(parser, "unexpected eof");
5333 else if (compile_errors)
5334 parseerror(parser, "there have been errors, bailing out");
5335 lex_close(parser->lex);
5341 parseerror(parser, "parse error");
5342 lex_close(parser->lex);
5347 lex_close(parser->lex);
5350 return !compile_errors;
5353 bool parser_compile_file(const char *filename)
5355 parser->lex = lex_open(filename);
5357 con_err("failed to open file \"%s\"\n", filename);
5360 return parser_compile();
5363 bool parser_compile_string(const char *name, const char *str, size_t len)
5365 parser->lex = lex_open_string(str, len, name);
5367 con_err("failed to create lexer for string \"%s\"\n", name);
5370 return parser_compile();
5373 void parser_cleanup()
5376 for (i = 0; i < vec_size(parser->accessors); ++i) {
5377 ast_delete(parser->accessors[i]->constval.vfunc);
5378 parser->accessors[i]->constval.vfunc = NULL;
5379 ast_delete(parser->accessors[i]);
5381 for (i = 0; i < vec_size(parser->functions); ++i) {
5382 ast_delete(parser->functions[i]);
5384 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
5385 ast_delete(parser->imm_vector[i]);
5387 for (i = 0; i < vec_size(parser->imm_string); ++i) {
5388 ast_delete(parser->imm_string[i]);
5390 for (i = 0; i < vec_size(parser->imm_float); ++i) {
5391 ast_delete(parser->imm_float[i]);
5393 for (i = 0; i < vec_size(parser->fields); ++i) {
5394 ast_delete(parser->fields[i]);
5396 for (i = 0; i < vec_size(parser->globals); ++i) {
5397 ast_delete(parser->globals[i]);
5399 vec_free(parser->accessors);
5400 vec_free(parser->functions);
5401 vec_free(parser->imm_vector);
5402 vec_free(parser->imm_string);
5403 vec_free(parser->imm_float);
5404 vec_free(parser->globals);
5405 vec_free(parser->fields);
5407 for (i = 0; i < vec_size(parser->variables); ++i)
5408 util_htdel(parser->variables[i]);
5409 vec_free(parser->variables);
5410 vec_free(parser->_blocklocals);
5411 vec_free(parser->_locals);
5414 for (i = 0; i < vec_size(parser->correct_variables); ++i) {
5415 correct_del(parser->correct_variables[i], parser->correct_variables_score[i]);
5417 for (i = 0; i < vec_size(parser->correct_variables_score); ++i) {
5418 vec_free(parser->correct_variables_score[i]);
5420 vec_free(parser->correct_variables);
5421 vec_free(parser->correct_variables_score);
5424 for (i = 0; i < vec_size(parser->_typedefs); ++i)
5425 ast_delete(parser->_typedefs[i]);
5426 vec_free(parser->_typedefs);
5427 for (i = 0; i < vec_size(parser->typedefs); ++i)
5428 util_htdel(parser->typedefs[i]);
5429 vec_free(parser->typedefs);
5430 vec_free(parser->_blocktypedefs);
5432 vec_free(parser->_block_ctx);
5434 vec_free(parser->labels);
5435 vec_free(parser->gotos);
5436 vec_free(parser->breaks);
5437 vec_free(parser->continues);
5439 ast_value_delete(parser->nil);
5444 bool parser_finish(const char *output)
5450 if (compile_errors) {
5451 con_out("*** there were compile errors\n");
5455 ir = ir_builder_new("gmqcc_out");
5457 con_out("failed to allocate builder\n");
5461 for (i = 0; i < vec_size(parser->fields); ++i) {
5464 if (!ast_istype(parser->fields[i], ast_value))
5466 field = (ast_value*)parser->fields[i];
5467 hasvalue = field->hasvalue;
5468 field->hasvalue = false;
5469 if (!ast_global_codegen((ast_value*)field, ir, true)) {
5470 con_out("failed to generate field %s\n", field->name);
5471 ir_builder_delete(ir);
5476 ast_expression *subtype;
5477 field->hasvalue = true;
5478 subtype = field->expression.next;
5479 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
5480 if (subtype->expression.vtype == TYPE_FIELD)
5481 ifld->fieldtype = subtype->expression.next->expression.vtype;
5482 else if (subtype->expression.vtype == TYPE_FUNCTION)
5483 ifld->outtype = subtype->expression.next->expression.vtype;
5484 (void)!ir_value_set_field(field->ir_v, ifld);
5487 for (i = 0; i < vec_size(parser->globals); ++i) {
5489 if (!ast_istype(parser->globals[i], ast_value))
5491 asvalue = (ast_value*)(parser->globals[i]);
5492 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
5493 retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
5494 "unused global: `%s`", asvalue->name);
5496 if (!ast_global_codegen(asvalue, ir, false)) {
5497 con_out("failed to generate global %s\n", asvalue->name);
5498 ir_builder_delete(ir);
5502 for (i = 0; i < vec_size(parser->imm_float); ++i) {
5503 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
5504 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
5505 ir_builder_delete(ir);
5509 for (i = 0; i < vec_size(parser->imm_string); ++i) {
5510 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
5511 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
5512 ir_builder_delete(ir);
5516 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
5517 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
5518 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
5519 ir_builder_delete(ir);
5523 for (i = 0; i < vec_size(parser->globals); ++i) {
5525 if (!ast_istype(parser->globals[i], ast_value))
5527 asvalue = (ast_value*)(parser->globals[i]);
5528 if (!(asvalue->expression.flags & AST_FLAG_INITIALIZED))
5530 if (asvalue->cvq == CV_CONST && !asvalue->hasvalue)
5531 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_CONSTANT,
5532 "uninitialized constant: `%s`",
5534 else if ((asvalue->cvq == CV_NONE || asvalue->cvq == CV_CONST) && !asvalue->hasvalue)
5535 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_GLOBAL,
5536 "uninitialized global: `%s`",
5539 if (!ast_generate_accessors(asvalue, ir)) {
5540 ir_builder_delete(ir);
5544 for (i = 0; i < vec_size(parser->fields); ++i) {
5546 asvalue = (ast_value*)(parser->fields[i]->expression.next);
5548 if (!ast_istype((ast_expression*)asvalue, ast_value))
5550 if (asvalue->expression.vtype != TYPE_ARRAY)
5552 if (!ast_generate_accessors(asvalue, ir)) {
5553 ir_builder_delete(ir);
5557 for (i = 0; i < vec_size(parser->functions); ++i) {
5558 if (!ast_function_codegen(parser->functions[i], ir)) {
5559 con_out("failed to generate function %s\n", parser->functions[i]->name);
5560 ir_builder_delete(ir);
5565 ir_builder_dump(ir, con_out);
5566 for (i = 0; i < vec_size(parser->functions); ++i) {
5567 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
5568 con_out("failed to finalize function %s\n", parser->functions[i]->name);
5569 ir_builder_delete(ir);
5574 if (compile_Werrors) {
5575 con_out("*** there were warnings treated as errors\n");
5576 compile_show_werrors();
5582 ir_builder_dump(ir, con_out);
5584 generate_checksum(parser);
5586 if (!ir_builder_generate(ir, output)) {
5587 con_out("*** failed to generate output file\n");
5588 ir_builder_delete(ir);
5593 ir_builder_delete(ir);