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)) {
2169 ontrue = (ast_expression*)ast_block_new(parser_ctx(parser));
2170 /* check for an else */
2171 if (!strcmp(parser_tokval(parser), "else")) {
2172 /* parse into the 'else' branch */
2173 if (!parser_next(parser)) {
2174 parseerror(parser, "expected on-false branch after 'else'");
2179 if (!parse_statement_or_block(parser, &onfalse)) {
2186 cond = process_condition(parser, cond, &ifnot);
2188 if (ontrue) ast_delete(ontrue);
2189 if (onfalse) ast_delete(onfalse);
2194 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
2196 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
2197 *out = (ast_expression*)ifthen;
2201 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out);
2202 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
2207 /* skip the 'while' and get the body */
2208 if (!parser_next(parser)) {
2209 if (OPTS_FLAG(LOOP_LABELS))
2210 parseerror(parser, "expected loop label or 'while' condition in parenthesis");
2212 parseerror(parser, "expected 'while' condition in parenthesis");
2216 if (parser->tok == ':') {
2217 if (!OPTS_FLAG(LOOP_LABELS))
2218 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2219 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2220 parseerror(parser, "expected loop label");
2223 label = util_strdup(parser_tokval(parser));
2224 if (!parser_next(parser)) {
2226 parseerror(parser, "expected 'while' condition in parenthesis");
2231 if (parser->tok != '(') {
2232 parseerror(parser, "expected 'while' condition in parenthesis");
2236 vec_push(parser->breaks, label);
2237 vec_push(parser->continues, label);
2239 rv = parse_while_go(parser, block, out);
2242 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2243 parseerror(parser, "internal error: label stack corrupted");
2249 vec_pop(parser->breaks);
2250 vec_pop(parser->continues);
2255 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out)
2258 ast_expression *cond, *ontrue;
2262 lex_ctx ctx = parser_ctx(parser);
2264 (void)block; /* not touching */
2266 /* parse into the expression */
2267 if (!parser_next(parser)) {
2268 parseerror(parser, "expected 'while' condition after opening paren");
2271 /* parse the condition */
2272 cond = parse_expression_leave(parser, false, true, false);
2276 if (parser->tok != ')') {
2277 parseerror(parser, "expected closing paren after 'while' condition");
2281 /* parse into the 'then' branch */
2282 if (!parser_next(parser)) {
2283 parseerror(parser, "expected while-loop body");
2287 if (!parse_statement_or_block(parser, &ontrue)) {
2292 cond = process_condition(parser, cond, &ifnot);
2297 aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue);
2298 *out = (ast_expression*)aloop;
2302 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out);
2303 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2308 /* skip the 'do' and get the body */
2309 if (!parser_next(parser)) {
2310 if (OPTS_FLAG(LOOP_LABELS))
2311 parseerror(parser, "expected loop label or body");
2313 parseerror(parser, "expected loop body");
2317 if (parser->tok == ':') {
2318 if (!OPTS_FLAG(LOOP_LABELS))
2319 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2320 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2321 parseerror(parser, "expected loop label");
2324 label = util_strdup(parser_tokval(parser));
2325 if (!parser_next(parser)) {
2327 parseerror(parser, "expected loop body");
2332 vec_push(parser->breaks, label);
2333 vec_push(parser->continues, label);
2335 rv = parse_dowhile_go(parser, block, out);
2338 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2339 parseerror(parser, "internal error: label stack corrupted");
2345 vec_pop(parser->breaks);
2346 vec_pop(parser->continues);
2351 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out)
2354 ast_expression *cond, *ontrue;
2358 lex_ctx ctx = parser_ctx(parser);
2360 (void)block; /* not touching */
2362 if (!parse_statement_or_block(parser, &ontrue))
2365 /* expect the "while" */
2366 if (parser->tok != TOKEN_KEYWORD ||
2367 strcmp(parser_tokval(parser), "while"))
2369 parseerror(parser, "expected 'while' and condition");
2374 /* skip the 'while' and check for opening paren */
2375 if (!parser_next(parser) || parser->tok != '(') {
2376 parseerror(parser, "expected 'while' condition in parenthesis");
2380 /* parse into the expression */
2381 if (!parser_next(parser)) {
2382 parseerror(parser, "expected 'while' condition after opening paren");
2386 /* parse the condition */
2387 cond = parse_expression_leave(parser, false, true, false);
2391 if (parser->tok != ')') {
2392 parseerror(parser, "expected closing paren after 'while' condition");
2398 if (!parser_next(parser) || parser->tok != ';') {
2399 parseerror(parser, "expected semicolon after condition");
2405 if (!parser_next(parser)) {
2406 parseerror(parser, "parse error");
2412 cond = process_condition(parser, cond, &ifnot);
2417 aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue);
2418 *out = (ast_expression*)aloop;
2422 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out);
2423 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2428 /* skip the 'for' and check for opening paren */
2429 if (!parser_next(parser)) {
2430 if (OPTS_FLAG(LOOP_LABELS))
2431 parseerror(parser, "expected loop label or 'for' expressions in parenthesis");
2433 parseerror(parser, "expected 'for' expressions in parenthesis");
2437 if (parser->tok == ':') {
2438 if (!OPTS_FLAG(LOOP_LABELS))
2439 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2440 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2441 parseerror(parser, "expected loop label");
2444 label = util_strdup(parser_tokval(parser));
2445 if (!parser_next(parser)) {
2447 parseerror(parser, "expected 'for' expressions in parenthesis");
2452 if (parser->tok != '(') {
2453 parseerror(parser, "expected 'for' expressions in parenthesis");
2457 vec_push(parser->breaks, label);
2458 vec_push(parser->continues, label);
2460 rv = parse_for_go(parser, block, out);
2463 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2464 parseerror(parser, "internal error: label stack corrupted");
2470 vec_pop(parser->breaks);
2471 vec_pop(parser->continues);
2475 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out)
2478 ast_expression *initexpr, *cond, *increment, *ontrue;
2484 lex_ctx ctx = parser_ctx(parser);
2486 parser_enterblock(parser);
2493 /* parse into the expression */
2494 if (!parser_next(parser)) {
2495 parseerror(parser, "expected 'for' initializer after opening paren");
2500 if (parser->tok == TOKEN_IDENT)
2501 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2503 if (typevar || parser->tok == TOKEN_TYPENAME) {
2505 if (opts.standard != COMPILER_GMQCC) {
2506 if (parsewarning(parser, WARN_EXTENSIONS,
2507 "current standard does not allow variable declarations in for-loop initializers"))
2511 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false, 0, NULL))
2514 else if (parser->tok != ';')
2516 initexpr = parse_expression_leave(parser, false, false, false);
2521 /* move on to condition */
2522 if (parser->tok != ';') {
2523 parseerror(parser, "expected semicolon after for-loop initializer");
2526 if (!parser_next(parser)) {
2527 parseerror(parser, "expected for-loop condition");
2531 /* parse the condition */
2532 if (parser->tok != ';') {
2533 cond = parse_expression_leave(parser, false, true, false);
2538 /* move on to incrementor */
2539 if (parser->tok != ';') {
2540 parseerror(parser, "expected semicolon after for-loop initializer");
2543 if (!parser_next(parser)) {
2544 parseerror(parser, "expected for-loop condition");
2548 /* parse the incrementor */
2549 if (parser->tok != ')') {
2550 increment = parse_expression_leave(parser, false, false, false);
2553 if (!ast_side_effects(increment)) {
2554 if (genwarning(ast_ctx(increment), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2560 if (parser->tok != ')') {
2561 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2564 /* parse into the 'then' branch */
2565 if (!parser_next(parser)) {
2566 parseerror(parser, "expected for-loop body");
2569 if (!parse_statement_or_block(parser, &ontrue))
2573 cond = process_condition(parser, cond, &ifnot);
2577 aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue);
2578 *out = (ast_expression*)aloop;
2580 if (!parser_leaveblock(parser))
2584 if (initexpr) ast_delete(initexpr);
2585 if (cond) ast_delete(cond);
2586 if (increment) ast_delete(increment);
2587 (void)!parser_leaveblock(parser);
2591 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2593 ast_expression *exp = NULL;
2594 ast_return *ret = NULL;
2595 ast_value *expected = parser->function->vtype;
2597 lex_ctx ctx = parser_ctx(parser);
2599 (void)block; /* not touching */
2601 if (!parser_next(parser)) {
2602 parseerror(parser, "expected return expression");
2606 if (parser->tok != ';') {
2607 exp = parse_expression(parser, false, false);
2611 if (exp->expression.vtype != TYPE_NIL &&
2612 exp->expression.vtype != expected->expression.next->expression.vtype)
2614 parseerror(parser, "return with invalid expression");
2617 ret = ast_return_new(ctx, exp);
2623 if (!parser_next(parser))
2624 parseerror(parser, "parse error");
2625 if (expected->expression.next->expression.vtype != TYPE_VOID) {
2626 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2628 ret = ast_return_new(ctx, NULL);
2630 *out = (ast_expression*)ret;
2634 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2637 unsigned int levels = 0;
2638 lex_ctx ctx = parser_ctx(parser);
2639 const char **loops = (is_continue ? parser->continues : parser->breaks);
2641 (void)block; /* not touching */
2642 if (!parser_next(parser)) {
2643 parseerror(parser, "expected semicolon or loop label");
2647 if (parser->tok == TOKEN_IDENT) {
2648 if (!OPTS_FLAG(LOOP_LABELS))
2649 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2650 i = vec_size(loops);
2652 if (loops[i] && !strcmp(loops[i], parser_tokval(parser)))
2655 parseerror(parser, "no such loop to %s: `%s`",
2656 (is_continue ? "continue" : "break out of"),
2657 parser_tokval(parser));
2662 if (!parser_next(parser)) {
2663 parseerror(parser, "expected semicolon");
2668 if (parser->tok != ';') {
2669 parseerror(parser, "expected semicolon");
2673 if (!parser_next(parser))
2674 parseerror(parser, "parse error");
2676 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue, levels);
2680 /* returns true when it was a variable qualifier, false otherwise!
2681 * on error, cvq is set to CV_WRONG
2683 static bool parse_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *is_static, uint32_t *_flags, char **message)
2685 bool had_const = false;
2686 bool had_var = false;
2687 bool had_noref = false;
2688 bool had_attrib = false;
2689 bool had_static = false;
2694 if (parser->tok == TOKEN_ATTRIBUTE_OPEN) {
2696 /* parse an attribute */
2697 if (!parser_next(parser)) {
2698 parseerror(parser, "expected attribute after `[[`");
2702 if (!strcmp(parser_tokval(parser), "noreturn")) {
2703 flags |= AST_FLAG_NORETURN;
2704 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2705 parseerror(parser, "`noreturn` attribute has no parameters, expected `]]`");
2710 else if (!strcmp(parser_tokval(parser), "noref")) {
2712 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2713 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2718 else if (!strcmp(parser_tokval(parser), "inline")) {
2719 flags |= AST_FLAG_INLINE;
2720 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2721 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2728 else if (!strcmp(parser_tokval(parser), "deprecated") && !(flags & AST_FLAG_DEPRECATED)) {
2729 flags |= AST_FLAG_DEPRECATED;
2732 if (!parser_next(parser)) {
2733 parseerror(parser, "parse error in attribute");
2737 if (parser->tok == '(') {
2738 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
2739 parseerror(parser, "`deprecated` attribute missing parameter");
2743 *message = util_strdup(parser_tokval(parser));
2745 if (!parser_next(parser)) {
2746 parseerror(parser, "parse error in attribute");
2750 if(parser->tok != ')') {
2751 parseerror(parser, "`deprecated` attribute expected `)` after parameter");
2755 if (!parser_next(parser)) {
2756 parseerror(parser, "parse error in attribute");
2761 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2762 parseerror(parser, "`deprecated` attribute expected `]]`");
2765 if (*message) mem_d(*message);
2773 /* Skip tokens until we hit a ]] */
2774 (void)!parsewarning(parser, WARN_UNKNOWN_ATTRIBUTE, "unknown attribute starting with `%s`", parser_tokval(parser));
2775 while (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2776 if (!parser_next(parser)) {
2777 parseerror(parser, "error inside attribute");
2784 else if (!strcmp(parser_tokval(parser), "static"))
2786 else if (!strcmp(parser_tokval(parser), "const"))
2788 else if (!strcmp(parser_tokval(parser), "var"))
2790 else if (with_local && !strcmp(parser_tokval(parser), "local"))
2792 else if (!strcmp(parser_tokval(parser), "noref"))
2794 else if (!had_const && !had_var && !had_noref && !had_attrib && !had_static && !flags) {
2799 if (!parser_next(parser))
2809 *is_static = had_static;
2813 parseerror(parser, "parse error after variable qualifier");
2818 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out);
2819 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
2824 /* skip the 'while' and get the body */
2825 if (!parser_next(parser)) {
2826 if (OPTS_FLAG(LOOP_LABELS))
2827 parseerror(parser, "expected loop label or 'switch' operand in parenthesis");
2829 parseerror(parser, "expected 'switch' operand in parenthesis");
2833 if (parser->tok == ':') {
2834 if (!OPTS_FLAG(LOOP_LABELS))
2835 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2836 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2837 parseerror(parser, "expected loop label");
2840 label = util_strdup(parser_tokval(parser));
2841 if (!parser_next(parser)) {
2843 parseerror(parser, "expected 'switch' operand in parenthesis");
2848 if (parser->tok != '(') {
2849 parseerror(parser, "expected 'switch' operand in parenthesis");
2853 vec_push(parser->breaks, label);
2855 rv = parse_switch_go(parser, block, out);
2858 if (vec_last(parser->breaks) != label) {
2859 parseerror(parser, "internal error: label stack corrupted");
2865 vec_pop(parser->breaks);
2870 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out)
2872 ast_expression *operand;
2875 ast_switch *switchnode;
2876 ast_switch_case swcase;
2879 bool noref, is_static;
2880 uint32_t qflags = 0;
2882 lex_ctx ctx = parser_ctx(parser);
2884 (void)block; /* not touching */
2887 /* parse into the expression */
2888 if (!parser_next(parser)) {
2889 parseerror(parser, "expected switch operand");
2892 /* parse the operand */
2893 operand = parse_expression_leave(parser, false, false, false);
2897 switchnode = ast_switch_new(ctx, operand);
2900 if (parser->tok != ')') {
2901 ast_delete(switchnode);
2902 parseerror(parser, "expected closing paren after 'switch' operand");
2906 /* parse over the opening paren */
2907 if (!parser_next(parser) || parser->tok != '{') {
2908 ast_delete(switchnode);
2909 parseerror(parser, "expected list of cases");
2913 if (!parser_next(parser)) {
2914 ast_delete(switchnode);
2915 parseerror(parser, "expected 'case' or 'default'");
2919 /* new block; allow some variables to be declared here */
2920 parser_enterblock(parser);
2923 if (parser->tok == TOKEN_IDENT)
2924 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2925 if (typevar || parser->tok == TOKEN_TYPENAME) {
2926 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL)) {
2927 ast_delete(switchnode);
2932 if (parse_qualifiers(parser, true, &cvq, &noref, &is_static, &qflags, NULL))
2934 if (cvq == CV_WRONG) {
2935 ast_delete(switchnode);
2938 if (!parse_variable(parser, block, false, cvq, NULL, noref, is_static, qflags, NULL)) {
2939 ast_delete(switchnode);
2948 while (parser->tok != '}') {
2949 ast_block *caseblock;
2951 if (!strcmp(parser_tokval(parser), "case")) {
2952 if (!parser_next(parser)) {
2953 ast_delete(switchnode);
2954 parseerror(parser, "expected expression for case");
2957 swcase.value = parse_expression_leave(parser, false, false, false);
2958 if (!swcase.value) {
2959 ast_delete(switchnode);
2960 parseerror(parser, "expected expression for case");
2963 if (!OPTS_FLAG(RELAXED_SWITCH)) {
2964 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
2965 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
2971 else if (!strcmp(parser_tokval(parser), "default")) {
2972 swcase.value = NULL;
2973 if (!parser_next(parser)) {
2974 ast_delete(switchnode);
2975 parseerror(parser, "expected colon");
2980 ast_delete(switchnode);
2981 parseerror(parser, "expected 'case' or 'default'");
2985 /* Now the colon and body */
2986 if (parser->tok != ':') {
2987 if (swcase.value) ast_unref(swcase.value);
2988 ast_delete(switchnode);
2989 parseerror(parser, "expected colon");
2993 if (!parser_next(parser)) {
2994 if (swcase.value) ast_unref(swcase.value);
2995 ast_delete(switchnode);
2996 parseerror(parser, "expected statements or case");
2999 caseblock = ast_block_new(parser_ctx(parser));
3001 if (swcase.value) ast_unref(swcase.value);
3002 ast_delete(switchnode);
3005 swcase.code = (ast_expression*)caseblock;
3006 vec_push(switchnode->cases, swcase);
3008 ast_expression *expr;
3009 if (parser->tok == '}')
3011 if (parser->tok == TOKEN_KEYWORD) {
3012 if (!strcmp(parser_tokval(parser), "case") ||
3013 !strcmp(parser_tokval(parser), "default"))
3018 if (!parse_statement(parser, caseblock, &expr, true)) {
3019 ast_delete(switchnode);
3024 if (!ast_block_add_expr(caseblock, expr)) {
3025 ast_delete(switchnode);
3031 parser_leaveblock(parser);
3034 if (parser->tok != '}') {
3035 ast_delete(switchnode);
3036 parseerror(parser, "expected closing paren of case list");
3039 if (!parser_next(parser)) {
3040 ast_delete(switchnode);
3041 parseerror(parser, "parse error after switch");
3044 *out = (ast_expression*)switchnode;
3048 /* parse computed goto sides */
3049 static ast_expression *parse_goto_computed(parser_t *parser, ast_expression **side) {
3050 ast_expression *on_true;
3051 ast_expression *on_false;
3052 ast_expression *cond;
3057 if (ast_istype(*side, ast_ternary)) {
3058 ast_ternary *tern = (ast_ternary*)*side;
3059 on_true = parse_goto_computed(parser, &tern->on_true);
3060 on_false = parse_goto_computed(parser, &tern->on_false);
3062 if (!on_true || !on_false) {
3063 parseerror(parser, "expected label or expression in ternary");
3064 if (on_true) ast_unref(on_true);
3065 if (on_false) ast_unref(on_false);
3073 return (ast_expression*)ast_ifthen_new(parser_ctx(parser), cond, on_true, on_false);
3074 } else if (ast_istype(*side, ast_label)) {
3075 ast_goto *gt = ast_goto_new(parser_ctx(parser), ((ast_label*)*side)->name);
3076 ast_goto_set_label(gt, ((ast_label*)*side));
3078 return (ast_expression*)gt;
3083 static bool parse_goto(parser_t *parser, ast_expression **out)
3085 ast_goto *gt = NULL;
3086 ast_expression *lbl;
3088 if (!parser_next(parser))
3091 if (parser->tok != TOKEN_IDENT) {
3092 ast_expression *expression;
3094 /* could be an expression i.e computed goto :-) */
3095 if (parser->tok != '(') {
3096 parseerror(parser, "expected label name after `goto`");
3100 /* failed to parse expression for goto */
3101 if (!(expression = parse_expression(parser, false, true)) ||
3102 !(*out = parse_goto_computed(parser, &expression))) {
3103 parseerror(parser, "invalid goto expression");
3104 ast_unref(expression);
3111 /* not computed goto */
3112 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
3113 lbl = parser_find_label(parser, gt->name);
3115 if (!ast_istype(lbl, ast_label)) {
3116 parseerror(parser, "internal error: label is not an ast_label");
3120 ast_goto_set_label(gt, (ast_label*)lbl);
3123 vec_push(parser->gotos, gt);
3125 if (!parser_next(parser) || parser->tok != ';') {
3126 parseerror(parser, "semicolon expected after goto label");
3129 if (!parser_next(parser)) {
3130 parseerror(parser, "parse error after goto");
3134 *out = (ast_expression*)gt;
3138 static bool parse_skipwhite(parser_t *parser)
3141 if (!parser_next(parser))
3143 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
3144 return parser->tok < TOKEN_ERROR;
3147 static bool parse_eol(parser_t *parser)
3149 if (!parse_skipwhite(parser))
3151 return parser->tok == TOKEN_EOL;
3154 static bool parse_pragma_do(parser_t *parser)
3156 if (!parser_next(parser) ||
3157 parser->tok != TOKEN_IDENT ||
3158 strcmp(parser_tokval(parser), "pragma"))
3160 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
3163 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
3164 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
3168 if (!strcmp(parser_tokval(parser), "noref")) {
3169 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
3170 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
3173 parser->noref = !!parser_token(parser)->constval.i;
3174 if (!parse_eol(parser)) {
3175 parseerror(parser, "parse error after `noref` pragma");
3181 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
3188 static bool parse_pragma(parser_t *parser)
3191 parser->lex->flags.preprocessing = true;
3192 parser->lex->flags.mergelines = true;
3193 rv = parse_pragma_do(parser);
3194 if (parser->tok != TOKEN_EOL) {
3195 parseerror(parser, "junk after pragma");
3198 parser->lex->flags.preprocessing = false;
3199 parser->lex->flags.mergelines = false;
3200 if (!parser_next(parser)) {
3201 parseerror(parser, "parse error after pragma");
3207 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
3209 bool noref, is_static;
3211 uint32_t qflags = 0;
3212 ast_value *typevar = NULL;
3213 char *vstring = NULL;
3217 if (parser->tok == TOKEN_IDENT)
3218 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3220 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
3222 /* local variable */
3224 parseerror(parser, "cannot declare a variable from here");
3227 if (opts.standard == COMPILER_QCC) {
3228 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
3231 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL))
3235 else if (parse_qualifiers(parser, !!block, &cvq, &noref, &is_static, &qflags, &vstring))
3237 if (cvq == CV_WRONG)
3239 return parse_variable(parser, block, true, cvq, NULL, noref, is_static, qflags, vstring);
3241 else if (parser->tok == TOKEN_KEYWORD)
3243 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
3248 if (!parser_next(parser)) {
3249 parseerror(parser, "parse error after __builtin_debug_printtype");
3253 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
3255 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
3256 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
3257 if (!parser_next(parser)) {
3258 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
3264 if (!parse_statement(parser, block, out, allow_cases))
3267 con_out("__builtin_debug_printtype: got no output node\n");
3270 ast_type_to_string(*out, ty, sizeof(ty));
3271 con_out("__builtin_debug_printtype: `%s`\n", ty);
3276 else if (!strcmp(parser_tokval(parser), "return"))
3278 return parse_return(parser, block, out);
3280 else if (!strcmp(parser_tokval(parser), "if"))
3282 return parse_if(parser, block, out);
3284 else if (!strcmp(parser_tokval(parser), "while"))
3286 return parse_while(parser, block, out);
3288 else if (!strcmp(parser_tokval(parser), "do"))
3290 return parse_dowhile(parser, block, out);
3292 else if (!strcmp(parser_tokval(parser), "for"))
3294 if (opts.standard == COMPILER_QCC) {
3295 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
3298 return parse_for(parser, block, out);
3300 else if (!strcmp(parser_tokval(parser), "break"))
3302 return parse_break_continue(parser, block, out, false);
3304 else if (!strcmp(parser_tokval(parser), "continue"))
3306 return parse_break_continue(parser, block, out, true);
3308 else if (!strcmp(parser_tokval(parser), "switch"))
3310 return parse_switch(parser, block, out);
3312 else if (!strcmp(parser_tokval(parser), "case") ||
3313 !strcmp(parser_tokval(parser), "default"))
3316 parseerror(parser, "unexpected 'case' label");
3321 else if (!strcmp(parser_tokval(parser), "goto"))
3323 return parse_goto(parser, out);
3325 else if (!strcmp(parser_tokval(parser), "typedef"))
3327 if (!parser_next(parser)) {
3328 parseerror(parser, "expected type definition after 'typedef'");
3331 return parse_typedef(parser);
3333 parseerror(parser, "Unexpected keyword");
3336 else if (parser->tok == '{')
3339 inner = parse_block(parser);
3342 *out = (ast_expression*)inner;
3345 else if (parser->tok == ':')
3349 if (!parser_next(parser)) {
3350 parseerror(parser, "expected label name");
3353 if (parser->tok != TOKEN_IDENT) {
3354 parseerror(parser, "label must be an identifier");
3357 label = (ast_label*)parser_find_label(parser, parser_tokval(parser));
3359 if (!label->undefined) {
3360 parseerror(parser, "label `%s` already defined", label->name);
3363 label->undefined = false;
3366 label = ast_label_new(parser_ctx(parser), parser_tokval(parser), false);
3367 vec_push(parser->labels, label);
3369 *out = (ast_expression*)label;
3370 if (!parser_next(parser)) {
3371 parseerror(parser, "parse error after label");
3374 for (i = 0; i < vec_size(parser->gotos); ++i) {
3375 if (!strcmp(parser->gotos[i]->name, label->name)) {
3376 ast_goto_set_label(parser->gotos[i], label);
3377 vec_remove(parser->gotos, i, 1);
3383 else if (parser->tok == ';')
3385 if (!parser_next(parser)) {
3386 parseerror(parser, "parse error after empty statement");
3393 ast_expression *exp = parse_expression(parser, false, false);
3397 if (!ast_side_effects(exp)) {
3398 if (genwarning(ast_ctx(exp), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
3405 static bool parse_block_into(parser_t *parser, ast_block *block)
3409 parser_enterblock(parser);
3411 if (!parser_next(parser)) { /* skip the '{' */
3412 parseerror(parser, "expected function body");
3416 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
3418 ast_expression *expr = NULL;
3419 if (parser->tok == '}')
3422 if (!parse_statement(parser, block, &expr, false)) {
3423 /* parseerror(parser, "parse error"); */
3429 if (!ast_block_add_expr(block, expr)) {
3436 if (parser->tok != '}') {
3439 (void)parser_next(parser);
3443 if (!parser_leaveblock(parser))
3445 return retval && !!block;
3448 static ast_block* parse_block(parser_t *parser)
3451 block = ast_block_new(parser_ctx(parser));
3454 if (!parse_block_into(parser, block)) {
3455 ast_block_delete(block);
3461 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
3463 if (parser->tok == '{') {
3464 *out = (ast_expression*)parse_block(parser);
3467 return parse_statement(parser, NULL, out, false);
3470 static bool create_vector_members(ast_value *var, ast_member **me)
3473 size_t len = strlen(var->name);
3475 for (i = 0; i < 3; ++i) {
3476 char *name = (char*)mem_a(len+3);
3477 memcpy(name, var->name, len);
3479 name[len+1] = 'x'+i;
3481 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
3490 do { ast_member_delete(me[--i]); } while(i);
3494 static bool parse_function_body(parser_t *parser, ast_value *var)
3496 ast_block *block = NULL;
3501 ast_expression *framenum = NULL;
3502 ast_expression *nextthink = NULL;
3503 /* None of the following have to be deleted */
3504 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
3505 ast_expression *gbl_time = NULL, *gbl_self = NULL;
3506 bool has_frame_think;
3510 has_frame_think = false;
3511 old = parser->function;
3513 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
3514 parseerror(parser, "gotos/labels leaking");
3518 if (var->expression.flags & AST_FLAG_VARIADIC) {
3519 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
3520 "variadic function with implementation will not be able to access additional parameters"))
3526 if (parser->tok == '[') {
3527 /* got a frame definition: [ framenum, nextthink ]
3528 * this translates to:
3529 * self.frame = framenum;
3530 * self.nextthink = time + 0.1;
3531 * self.think = nextthink;
3535 fld_think = parser_find_field(parser, "think");
3536 fld_nextthink = parser_find_field(parser, "nextthink");
3537 fld_frame = parser_find_field(parser, "frame");
3538 if (!fld_think || !fld_nextthink || !fld_frame) {
3539 parseerror(parser, "cannot use [frame,think] notation without the required fields");
3540 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
3543 gbl_time = parser_find_global(parser, "time");
3544 gbl_self = parser_find_global(parser, "self");
3545 if (!gbl_time || !gbl_self) {
3546 parseerror(parser, "cannot use [frame,think] notation without the required globals");
3547 parseerror(parser, "please declare the following globals: `time`, `self`");
3551 if (!parser_next(parser))
3554 framenum = parse_expression_leave(parser, true, false, false);
3556 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
3559 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
3560 ast_unref(framenum);
3561 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
3565 if (parser->tok != ',') {
3566 ast_unref(framenum);
3567 parseerror(parser, "expected comma after frame number in [frame,think] notation");
3568 parseerror(parser, "Got a %i\n", parser->tok);
3572 if (!parser_next(parser)) {
3573 ast_unref(framenum);
3577 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
3579 /* qc allows the use of not-yet-declared functions here
3580 * - this automatically creates a prototype */
3581 ast_value *thinkfunc;
3582 ast_expression *functype = fld_think->expression.next;
3584 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
3585 if (!thinkfunc || !ast_type_adopt(thinkfunc, functype)) {
3586 ast_unref(framenum);
3587 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
3591 if (!parser_next(parser)) {
3592 ast_unref(framenum);
3593 ast_delete(thinkfunc);
3597 vec_push(parser->globals, (ast_expression*)thinkfunc);
3598 util_htset(parser->htglobals, thinkfunc->name, thinkfunc);
3600 nextthink = (ast_expression*)thinkfunc;
3603 nextthink = parse_expression_leave(parser, true, false, false);
3605 ast_unref(framenum);
3606 parseerror(parser, "expected a think-function in [frame,think] notation");
3611 if (!ast_istype(nextthink, ast_value)) {
3612 parseerror(parser, "think-function in [frame,think] notation must be a constant");
3616 if (retval && parser->tok != ']') {
3617 parseerror(parser, "expected closing `]` for [frame,think] notation");
3621 if (retval && !parser_next(parser)) {
3625 if (retval && parser->tok != '{') {
3626 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
3631 ast_unref(nextthink);
3632 ast_unref(framenum);
3636 has_frame_think = true;
3639 block = ast_block_new(parser_ctx(parser));
3641 parseerror(parser, "failed to allocate block");
3642 if (has_frame_think) {
3643 ast_unref(nextthink);
3644 ast_unref(framenum);
3649 if (has_frame_think) {
3651 ast_expression *self_frame;
3652 ast_expression *self_nextthink;
3653 ast_expression *self_think;
3654 ast_expression *time_plus_1;
3655 ast_store *store_frame;
3656 ast_store *store_nextthink;
3657 ast_store *store_think;
3659 ctx = parser_ctx(parser);
3660 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
3661 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
3662 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
3664 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
3665 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
3667 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
3668 if (self_frame) ast_delete(self_frame);
3669 if (self_nextthink) ast_delete(self_nextthink);
3670 if (self_think) ast_delete(self_think);
3671 if (time_plus_1) ast_delete(time_plus_1);
3677 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
3678 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
3679 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
3682 ast_delete(self_frame);
3685 if (!store_nextthink) {
3686 ast_delete(self_nextthink);
3690 ast_delete(self_think);
3694 if (store_frame) ast_delete(store_frame);
3695 if (store_nextthink) ast_delete(store_nextthink);
3696 if (store_think) ast_delete(store_think);
3699 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
3700 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
3701 !ast_block_add_expr(block, (ast_expression*)store_think))
3708 parseerror(parser, "failed to generate code for [frame,think]");
3709 ast_unref(nextthink);
3710 ast_unref(framenum);
3716 parser_enterblock(parser);
3718 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
3720 ast_value *param = var->expression.params[parami];
3723 if (param->expression.vtype != TYPE_VECTOR &&
3724 (param->expression.vtype != TYPE_FIELD ||
3725 param->expression.next->expression.vtype != TYPE_VECTOR))
3730 if (!create_vector_members(param, me)) {
3731 ast_block_delete(block);
3735 for (e = 0; e < 3; ++e) {
3736 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
3737 ast_block_collect(block, (ast_expression*)me[e]);
3741 func = ast_function_new(ast_ctx(var), var->name, var);
3743 parseerror(parser, "failed to allocate function for `%s`", var->name);
3744 ast_block_delete(block);
3747 vec_push(parser->functions, func);
3749 parser->function = func;
3750 if (!parse_block_into(parser, block)) {
3751 ast_block_delete(block);
3755 vec_push(func->blocks, block);
3757 parser->function = old;
3758 if (!parser_leaveblock(parser))
3760 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
3761 parseerror(parser, "internal error: local scopes left");
3765 if (parser->tok == ';')
3766 return parser_next(parser);
3767 else if (opts.standard == COMPILER_QCC)
3768 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
3772 vec_pop(parser->functions);
3773 ast_function_delete(func);
3774 var->constval.vfunc = NULL;
3777 (void)!parser_leaveblock(parser);
3778 parser->function = old;
3782 static ast_expression *array_accessor_split(
3787 ast_expression *left,
3788 ast_expression *right
3794 lex_ctx ctx = ast_ctx(array);
3796 if (!left || !right) {
3797 if (left) ast_delete(left);
3798 if (right) ast_delete(right);
3802 cmp = ast_binary_new(ctx, INSTR_LT,
3803 (ast_expression*)index,
3804 (ast_expression*)parser_const_float(parser, middle));
3808 parseerror(parser, "internal error: failed to create comparison for array setter");
3812 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
3814 ast_delete(cmp); /* will delete left and right */
3815 parseerror(parser, "internal error: failed to create conditional jump for array setter");
3819 return (ast_expression*)ifthen;
3822 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
3824 lex_ctx ctx = ast_ctx(array);
3826 if (from+1 == afterend) {
3827 /* set this value */
3830 ast_array_index *subscript;
3832 int assignop = type_store_instr[value->expression.vtype];
3834 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3835 assignop = INSTR_STORE_V;
3837 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3841 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
3843 ast_delete(subscript);
3847 block = ast_block_new(ctx);
3853 if (!ast_block_add_expr(block, (ast_expression*)st)) {
3858 ret = ast_return_new(ctx, NULL);
3864 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
3869 return (ast_expression*)block;
3871 ast_expression *left, *right;
3872 size_t diff = afterend - from;
3873 size_t middle = from + diff/2;
3874 left = array_setter_node(parser, array, index, value, from, middle);
3875 right = array_setter_node(parser, array, index, value, middle, afterend);
3876 return array_accessor_split(parser, array, index, middle, left, right);
3880 static ast_expression *array_field_setter_node(
3889 lex_ctx ctx = ast_ctx(array);
3891 if (from+1 == afterend) {
3892 /* set this value */
3895 ast_entfield *entfield;
3896 ast_array_index *subscript;
3898 int assignop = type_storep_instr[value->expression.vtype];
3900 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3901 assignop = INSTR_STOREP_V;
3903 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3907 entfield = ast_entfield_new_force(ctx,
3908 (ast_expression*)entity,
3909 (ast_expression*)subscript,
3910 (ast_expression*)subscript);
3912 ast_delete(subscript);
3916 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
3918 ast_delete(entfield);
3922 block = ast_block_new(ctx);
3928 if (!ast_block_add_expr(block, (ast_expression*)st)) {
3933 ret = ast_return_new(ctx, NULL);
3939 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
3944 return (ast_expression*)block;
3946 ast_expression *left, *right;
3947 size_t diff = afterend - from;
3948 size_t middle = from + diff/2;
3949 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
3950 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
3951 return array_accessor_split(parser, array, index, middle, left, right);
3955 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
3957 lex_ctx ctx = ast_ctx(array);
3959 if (from+1 == afterend) {
3961 ast_array_index *subscript;
3963 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3967 ret = ast_return_new(ctx, (ast_expression*)subscript);
3969 ast_delete(subscript);
3973 return (ast_expression*)ret;
3975 ast_expression *left, *right;
3976 size_t diff = afterend - from;
3977 size_t middle = from + diff/2;
3978 left = array_getter_node(parser, array, index, from, middle);
3979 right = array_getter_node(parser, array, index, middle, afterend);
3980 return array_accessor_split(parser, array, index, middle, left, right);
3984 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
3986 ast_function *func = NULL;
3987 ast_value *fval = NULL;
3988 ast_block *body = NULL;
3990 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
3992 parseerror(parser, "failed to create accessor function value");
3996 func = ast_function_new(ast_ctx(array), funcname, fval);
3999 parseerror(parser, "failed to create accessor function node");
4003 body = ast_block_new(ast_ctx(array));
4005 parseerror(parser, "failed to create block for array accessor");
4011 vec_push(func->blocks, body);
4014 vec_push(parser->accessors, fval);
4019 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
4021 ast_expression *root = NULL;
4022 ast_value *index = NULL;
4023 ast_value *value = NULL;
4027 if (!ast_istype(array->expression.next, ast_value)) {
4028 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4032 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4034 func = fval->constval.vfunc;
4035 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4037 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4038 value = ast_value_copy((ast_value*)array->expression.next);
4040 if (!index || !value) {
4041 parseerror(parser, "failed to create locals for array accessor");
4044 (void)!ast_value_set_name(value, "value"); /* not important */
4045 vec_push(fval->expression.params, index);
4046 vec_push(fval->expression.params, value);
4048 root = array_setter_node(parser, array, index, value, 0, array->expression.count);
4050 parseerror(parser, "failed to build accessor search tree");
4054 array->setter = fval;
4055 return ast_block_add_expr(func->blocks[0], root);
4057 if (index) ast_delete(index);
4058 if (value) ast_delete(value);
4059 if (root) ast_delete(root);
4065 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
4067 ast_expression *root = NULL;
4068 ast_value *entity = NULL;
4069 ast_value *index = NULL;
4070 ast_value *value = NULL;
4074 if (!ast_istype(array->expression.next, ast_value)) {
4075 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4079 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4081 func = fval->constval.vfunc;
4082 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4084 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
4085 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4086 value = ast_value_copy((ast_value*)array->expression.next);
4087 if (!entity || !index || !value) {
4088 parseerror(parser, "failed to create locals for array accessor");
4091 (void)!ast_value_set_name(value, "value"); /* not important */
4092 vec_push(fval->expression.params, entity);
4093 vec_push(fval->expression.params, index);
4094 vec_push(fval->expression.params, value);
4096 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
4098 parseerror(parser, "failed to build accessor search tree");
4102 array->setter = fval;
4103 return ast_block_add_expr(func->blocks[0], root);
4105 if (entity) ast_delete(entity);
4106 if (index) ast_delete(index);
4107 if (value) ast_delete(value);
4108 if (root) ast_delete(root);
4114 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4116 ast_expression *root = NULL;
4117 ast_value *index = NULL;
4121 /* NOTE: checking array->expression.next rather than elemtype since
4122 * for fields elemtype is a temporary fieldtype.
4124 if (!ast_istype(array->expression.next, ast_value)) {
4125 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4129 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4131 func = fval->constval.vfunc;
4132 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
4134 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4137 parseerror(parser, "failed to create locals for array accessor");
4140 vec_push(fval->expression.params, index);
4142 root = array_getter_node(parser, array, index, 0, array->expression.count);
4144 parseerror(parser, "failed to build accessor search tree");
4148 array->getter = fval;
4149 return ast_block_add_expr(func->blocks[0], root);
4151 if (index) ast_delete(index);
4152 if (root) ast_delete(root);
4158 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
4159 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
4167 bool variadic = false;
4169 ctx = parser_ctx(parser);
4171 /* for the sake of less code we parse-in in this function */
4172 if (!parser_next(parser)) {
4173 parseerror(parser, "expected parameter list");
4179 /* parse variables until we hit a closing paren */
4180 while (parser->tok != ')') {
4182 /* there must be commas between them */
4183 if (parser->tok != ',') {
4184 parseerror(parser, "expected comma or end of parameter list");
4187 if (!parser_next(parser)) {
4188 parseerror(parser, "expected parameter");
4194 if (parser->tok == TOKEN_DOTS) {
4195 /* '...' indicates a varargs function */
4197 if (!parser_next(parser)) {
4198 parseerror(parser, "expected parameter");
4201 if (parser->tok != ')') {
4202 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4208 /* for anything else just parse a typename */
4209 param = parse_typename(parser, NULL, NULL);
4212 vec_push(params, param);
4213 if (param->expression.vtype >= TYPE_VARIANT) {
4214 char tname[1024]; /* typename is reserved in C++ */
4215 ast_type_to_string((ast_expression*)param, tname, sizeof(tname));
4216 parseerror(parser, "type not supported as part of a parameter list: %s", tname);
4222 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
4226 if (vec_size(params) > 8 && opts.standard == COMPILER_QCC)
4227 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
4230 if (!parser_next(parser)) {
4231 parseerror(parser, "parse error after typename");
4235 /* now turn 'var' into a function type */
4236 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
4237 fval->expression.next = (ast_expression*)var;
4239 fval->expression.flags |= AST_FLAG_VARIADIC;
4242 var->expression.params = params;
4249 for (i = 0; i < vec_size(params); ++i)
4250 ast_delete(params[i]);
4255 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
4257 ast_expression *cexp;
4258 ast_value *cval, *tmp;
4261 ctx = parser_ctx(parser);
4263 if (!parser_next(parser)) {
4265 parseerror(parser, "expected array-size");
4269 cexp = parse_expression_leave(parser, true, false, false);
4271 if (!cexp || !ast_istype(cexp, ast_value)) {
4275 parseerror(parser, "expected array-size as constant positive integer");
4278 cval = (ast_value*)cexp;
4280 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
4281 tmp->expression.next = (ast_expression*)var;
4284 if (cval->expression.vtype == TYPE_INTEGER)
4285 tmp->expression.count = cval->constval.vint;
4286 else if (cval->expression.vtype == TYPE_FLOAT)
4287 tmp->expression.count = cval->constval.vfloat;
4291 parseerror(parser, "array-size must be a positive integer constant");
4296 if (parser->tok != ']') {
4298 parseerror(parser, "expected ']' after array-size");
4301 if (!parser_next(parser)) {
4303 parseerror(parser, "error after parsing array size");
4309 /* Parse a complete typename.
4310 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
4311 * but when parsing variables separated by comma
4312 * 'storebase' should point to where the base-type should be kept.
4313 * The base type makes up every bit of type information which comes *before* the
4316 * The following will be parsed in its entirety:
4318 * The 'basetype' in this case is 'void()'
4319 * and if there's a comma after it, say:
4321 * then the type-information 'void()' can be stored in 'storebase'
4323 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
4325 ast_value *var, *tmp;
4328 const char *name = NULL;
4329 bool isfield = false;
4330 bool wasarray = false;
4331 size_t morefields = 0;
4333 ctx = parser_ctx(parser);
4335 /* types may start with a dot */
4336 if (parser->tok == '.') {
4338 /* if we parsed a dot we need a typename now */
4339 if (!parser_next(parser)) {
4340 parseerror(parser, "expected typename for field definition");
4344 /* Further dots are handled seperately because they won't be part of the
4347 while (parser->tok == '.') {
4349 if (!parser_next(parser)) {
4350 parseerror(parser, "expected typename for field definition");
4355 if (parser->tok == TOKEN_IDENT)
4356 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
4357 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
4358 parseerror(parser, "expected typename");
4362 /* generate the basic type value */
4363 if (cached_typedef) {
4364 var = ast_value_copy(cached_typedef);
4365 ast_value_set_name(var, "<type(from_def)>");
4367 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
4369 for (; morefields; --morefields) {
4370 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
4371 tmp->expression.next = (ast_expression*)var;
4375 /* do not yet turn into a field - remember:
4376 * .void() foo; is a field too
4377 * .void()() foo; is a function
4381 if (!parser_next(parser)) {
4383 parseerror(parser, "parse error after typename");
4387 /* an opening paren now starts the parameter-list of a function
4388 * this is where original-QC has parameter lists.
4389 * We allow a single parameter list here.
4390 * Much like fteqcc we don't allow `float()() x`
4392 if (parser->tok == '(') {
4393 var = parse_parameter_list(parser, var);
4398 /* store the base if requested */
4400 *storebase = ast_value_copy(var);
4402 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4403 tmp->expression.next = (ast_expression*)*storebase;
4408 /* there may be a name now */
4409 if (parser->tok == TOKEN_IDENT) {
4410 name = util_strdup(parser_tokval(parser));
4412 if (!parser_next(parser)) {
4414 parseerror(parser, "error after variable or field declaration");
4419 /* now this may be an array */
4420 if (parser->tok == '[') {
4422 var = parse_arraysize(parser, var);
4427 /* This is the point where we can turn it into a field */
4429 /* turn it into a field if desired */
4430 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4431 tmp->expression.next = (ast_expression*)var;
4435 /* now there may be function parens again */
4436 if (parser->tok == '(' && opts.standard == COMPILER_QCC)
4437 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4438 if (parser->tok == '(' && wasarray)
4439 parseerror(parser, "arrays as part of a return type is not supported");
4440 while (parser->tok == '(') {
4441 var = parse_parameter_list(parser, var);
4450 /* finally name it */
4452 if (!ast_value_set_name(var, name)) {
4454 parseerror(parser, "internal error: failed to set name");
4457 /* free the name, ast_value_set_name duplicates */
4464 static bool parse_typedef(parser_t *parser)
4466 ast_value *typevar, *oldtype;
4467 ast_expression *old;
4469 typevar = parse_typename(parser, NULL, NULL);
4474 if ( (old = parser_find_var(parser, typevar->name)) ) {
4475 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
4476 " -> `%s` has been declared here: %s:%i",
4477 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
4478 ast_delete(typevar);
4482 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
4483 parseerror(parser, "type `%s` has already been declared here: %s:%i",
4484 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
4485 ast_delete(typevar);
4489 vec_push(parser->_typedefs, typevar);
4490 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
4492 if (parser->tok != ';') {
4493 parseerror(parser, "expected semicolon after typedef");
4496 if (!parser_next(parser)) {
4497 parseerror(parser, "parse error after typedef");
4504 static const char *cvq_to_str(int cvq) {
4506 case CV_NONE: return "none";
4507 case CV_VAR: return "`var`";
4508 case CV_CONST: return "`const`";
4509 default: return "<INVALID>";
4513 static bool parser_check_qualifiers(parser_t *parser, const ast_value *var, const ast_value *proto)
4516 if (proto->cvq != var->cvq) {
4517 if (!(proto->cvq == CV_CONST && var->cvq == CV_NONE &&
4518 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
4519 parser->tok == '='))
4521 return !parsewarning(parser, WARN_DIFFERENT_QUALIFIERS,
4522 "`%s` declared with different qualifiers: %s\n"
4523 " -> previous declaration here: %s:%i uses %s",
4524 var->name, cvq_to_str(var->cvq),
4525 ast_ctx(proto).file, ast_ctx(proto).line,
4526 cvq_to_str(proto->cvq));
4529 av = (var ->expression.flags & AST_FLAG_NORETURN);
4530 ao = (proto->expression.flags & AST_FLAG_NORETURN);
4532 return !parsewarning(parser, WARN_DIFFERENT_ATTRIBUTES,
4533 "`%s` declared with different attributes%s\n"
4534 " -> previous declaration here: %s:%i",
4535 var->name, (av ? ": noreturn" : ""),
4536 ast_ctx(proto).file, ast_ctx(proto).line,
4537 (ao ? ": noreturn" : ""));
4542 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)
4546 ast_expression *old;
4550 ast_value *basetype = NULL;
4552 bool isparam = false;
4553 bool isvector = false;
4554 bool cleanvar = true;
4555 bool wasarray = false;
4559 if (!localblock && is_static)
4560 parseerror(parser, "`static` qualifier is not supported in global scope");
4562 /* get the first complete variable */
4563 var = parse_typename(parser, &basetype, cached_typedef);
4566 ast_delete(basetype);
4574 /* Part 0: finish the type */
4575 if (parser->tok == '(') {
4576 if (opts.standard == COMPILER_QCC)
4577 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4578 var = parse_parameter_list(parser, var);
4584 /* we only allow 1-dimensional arrays */
4585 if (parser->tok == '[') {
4587 var = parse_arraysize(parser, var);
4593 if (parser->tok == '(' && wasarray) {
4594 parseerror(parser, "arrays as part of a return type is not supported");
4595 /* we'll still parse the type completely for now */
4597 /* for functions returning functions */
4598 while (parser->tok == '(') {
4599 if (opts.standard == COMPILER_QCC)
4600 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4601 var = parse_parameter_list(parser, var);
4608 var->cvq = qualifier;
4609 var->expression.flags |= qflags;
4610 if (var->expression.flags & AST_FLAG_DEPRECATED)
4611 var->desc = vstring;
4614 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
4615 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
4616 * is then filled with the previous definition and the parameter-names replaced.
4618 if (!strcmp(var->name, "nil")) {
4619 if (OPTS_FLAG(UNTYPED_NIL)) {
4620 if (!localblock || !OPTS_FLAG(PERMISSIVE))
4621 parseerror(parser, "name `nil` not allowed (try -fpermissive)");
4623 (void)!parsewarning(parser, WARN_RESERVED_NAMES, "variable name `nil` is reserved");
4626 /* Deal with end_sys_ vars */
4628 if (!strcmp(var->name, "end_sys_globals")) {
4630 parser->crc_globals = vec_size(parser->globals);
4633 else if (!strcmp(var->name, "end_sys_fields")) {
4635 parser->crc_fields = vec_size(parser->fields);
4638 if (was_end && var->expression.vtype == TYPE_FIELD) {
4639 if (parsewarning(parser, WARN_END_SYS_FIELDS,
4640 "global '%s' hint should not be a field",
4641 parser_tokval(parser)))
4648 if (!nofields && var->expression.vtype == TYPE_FIELD)
4650 /* deal with field declarations */
4651 old = parser_find_field(parser, var->name);
4653 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
4654 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
4663 parseerror(parser, "field `%s` already declared here: %s:%i",
4664 var->name, ast_ctx(old).file, ast_ctx(old).line);
4669 if (opts.standard == COMPILER_QCC &&
4670 (old = parser_find_global(parser, var->name)))
4672 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
4673 parseerror(parser, "field `%s` already declared here: %s:%i",
4674 var->name, ast_ctx(old).file, ast_ctx(old).line);
4681 /* deal with other globals */
4682 old = parser_find_global(parser, var->name);
4683 if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
4685 /* This is a function which had a prototype */
4686 if (!ast_istype(old, ast_value)) {
4687 parseerror(parser, "internal error: prototype is not an ast_value");
4691 proto = (ast_value*)old;
4692 proto->desc = var->desc;
4693 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
4694 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
4696 ast_ctx(proto).file, ast_ctx(proto).line);
4700 /* we need the new parameter-names */
4701 for (i = 0; i < vec_size(proto->expression.params); ++i)
4702 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
4703 if (!parser_check_qualifiers(parser, var, proto)) {
4710 proto->expression.flags |= var->expression.flags;
4718 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
4719 "global `%s` already declared here: %s:%i",
4720 var->name, ast_ctx(old).file, ast_ctx(old).line))
4725 proto = (ast_value*)old;
4726 if (!ast_istype(old, ast_value)) {
4727 parseerror(parser, "internal error: not an ast_value");
4732 if (!parser_check_qualifiers(parser, var, proto)) {
4737 proto->expression.flags |= var->expression.flags;
4741 if (opts.standard == COMPILER_QCC &&
4742 (old = parser_find_field(parser, var->name)))
4744 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
4745 parseerror(parser, "global `%s` already declared here: %s:%i",
4746 var->name, ast_ctx(old).file, ast_ctx(old).line);
4753 else /* it's not a global */
4755 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
4756 if (old && !isparam) {
4757 parseerror(parser, "local `%s` already declared here: %s:%i",
4758 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
4762 old = parser_find_local(parser, var->name, 0, &isparam);
4763 if (old && isparam) {
4764 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
4765 "local `%s` is shadowing a parameter", var->name))
4767 parseerror(parser, "local `%s` already declared here: %s:%i",
4768 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
4772 if (opts.standard != COMPILER_GMQCC) {
4780 /* in a noref section we simply bump the usecount */
4781 if (noref || parser->noref)
4785 * Create the global/local, and deal with vector types.
4788 if (var->expression.vtype == TYPE_VECTOR)
4790 else if (var->expression.vtype == TYPE_FIELD &&
4791 var->expression.next->expression.vtype == TYPE_VECTOR)
4795 if (!create_vector_members(var, me)) {
4802 /* deal with global variables, fields, functions */
4803 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
4804 var->isfield = true;
4805 vec_push(parser->fields, (ast_expression*)var);
4806 util_htset(parser->htfields, var->name, var);
4808 for (i = 0; i < 3; ++i) {
4809 vec_push(parser->fields, (ast_expression*)me[i]);
4810 util_htset(parser->htfields, me[i]->name, me[i]);
4815 vec_push(parser->globals, (ast_expression*)var);
4816 util_htset(parser->htglobals, var->name, var);
4818 for (i = 0; i < 3; ++i) {
4819 vec_push(parser->globals, (ast_expression*)me[i]);
4820 util_htset(parser->htglobals, me[i]->name, me[i]);
4826 /* a static adds itself to be generated like any other global
4827 * but is added to the local namespace instead
4829 char *defname = NULL;
4830 size_t prefix_len, ln;
4832 ln = strlen(parser->function->name);
4833 vec_append(defname, ln, parser->function->name);
4835 vec_append(defname, 2, "::");
4836 /* remember the length up to here */
4837 prefix_len = vec_size(defname);
4839 /* Add it to the local scope */
4840 util_htset(vec_last(parser->variables), var->name, (void*)var);
4844 vec_last(parser->correct_variables),
4845 &vec_last(parser->correct_variables_score),
4849 /* now rename the global */
4850 ln = strlen(var->name);
4851 vec_append(defname, ln, var->name);
4852 ast_value_set_name(var, defname);
4854 /* push it to the to-be-generated globals */
4855 vec_push(parser->globals, (ast_expression*)var);
4857 /* same game for the vector members */
4859 for (i = 0; i < 3; ++i) {
4860 util_htset(vec_last(parser->variables), me[i]->name, (void*)(me[i]));
4864 vec_last(parser->correct_variables),
4865 &vec_last(parser->correct_variables_score),
4869 vec_shrinkto(defname, prefix_len);
4870 ln = strlen(me[i]->name);
4871 vec_append(defname, ln, me[i]->name);
4872 ast_member_set_name(me[i], defname);
4874 vec_push(parser->globals, (ast_expression*)me[i]);
4879 vec_push(localblock->locals, var);
4880 parser_addlocal(parser, var->name, (ast_expression*)var);
4882 for (i = 0; i < 3; ++i) {
4883 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
4884 ast_block_collect(localblock, (ast_expression*)me[i]);
4890 me[0] = me[1] = me[2] = NULL;
4895 if (var->expression.vtype == TYPE_ARRAY) {
4897 snprintf(name, sizeof(name), "%s##SET", var->name);
4898 if (!parser_create_array_setter(parser, var, name))
4900 snprintf(name, sizeof(name), "%s##GET", var->name);
4901 if (!parser_create_array_getter(parser, var, var->expression.next, name))
4904 else if (!localblock && !nofields &&
4905 var->expression.vtype == TYPE_FIELD &&
4906 var->expression.next->expression.vtype == TYPE_ARRAY)
4909 ast_expression *telem;
4911 ast_value *array = (ast_value*)var->expression.next;
4913 if (!ast_istype(var->expression.next, ast_value)) {
4914 parseerror(parser, "internal error: field element type must be an ast_value");
4918 snprintf(name, sizeof(name), "%s##SETF", var->name);
4919 if (!parser_create_array_field_setter(parser, array, name))
4922 telem = ast_type_copy(ast_ctx(var), array->expression.next);
4923 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
4924 tfield->expression.next = telem;
4925 snprintf(name, sizeof(name), "%s##GETFP", var->name);
4926 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
4934 if (parser->tok == ';') {
4935 ast_delete(basetype);
4936 if (!parser_next(parser)) {
4937 parseerror(parser, "error after variable declaration");
4943 if (parser->tok == ',')
4947 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
4950 parseerror(parser, "missing comma or semicolon while parsing variables");
4954 if (localblock && opts.standard == COMPILER_QCC) {
4955 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
4956 "initializing expression turns variable `%s` into a constant in this standard",
4963 if (parser->tok != '{') {
4964 if (parser->tok != '=') {
4965 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
4969 if (!parser_next(parser)) {
4970 parseerror(parser, "error parsing initializer");
4974 else if (opts.standard == COMPILER_QCC) {
4975 parseerror(parser, "expected '=' before function body in this standard");
4978 if (parser->tok == '#') {
4979 ast_function *func = NULL;
4982 parseerror(parser, "cannot declare builtins within functions");
4985 if (var->expression.vtype != TYPE_FUNCTION) {
4986 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
4989 if (!parser_next(parser)) {
4990 parseerror(parser, "expected builtin number");
4993 if (parser->tok != TOKEN_INTCONST) {
4994 parseerror(parser, "builtin number must be an integer constant");
4997 if (parser_token(parser)->constval.i < 0) {
4998 parseerror(parser, "builtin number must be an integer greater than zero");
5002 if (var->hasvalue) {
5003 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
5004 "builtin `%s` has already been defined\n"
5005 " -> previous declaration here: %s:%i",
5006 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
5010 func = ast_function_new(ast_ctx(var), var->name, var);
5012 parseerror(parser, "failed to allocate function for `%s`", var->name);
5015 vec_push(parser->functions, func);
5017 func->builtin = -parser_token(parser)->constval.i-1;
5020 if (!parser_next(parser)) {
5021 parseerror(parser, "expected comma or semicolon");
5023 ast_function_delete(func);
5024 var->constval.vfunc = NULL;
5028 else if (parser->tok == '{' || parser->tok == '[')
5031 parseerror(parser, "cannot declare functions within functions");
5036 ast_ctx(proto) = parser_ctx(parser);
5038 if (!parse_function_body(parser, var))
5040 ast_delete(basetype);
5041 for (i = 0; i < vec_size(parser->gotos); ++i)
5042 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
5043 vec_free(parser->gotos);
5044 vec_free(parser->labels);
5047 ast_expression *cexp;
5050 cexp = parse_expression_leave(parser, true, false, false);
5055 cval = (ast_value*)cexp;
5056 if (cval != parser->nil &&
5057 (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
5060 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
5064 if (!OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
5065 qualifier != CV_VAR)
5067 var->cvq = CV_CONST;
5069 if (cval == parser->nil)
5070 var->expression.flags |= AST_FLAG_INITIALIZED;
5073 var->hasvalue = true;
5074 if (cval->expression.vtype == TYPE_STRING)
5075 var->constval.vstring = parser_strdup(cval->constval.vstring);
5076 else if (cval->expression.vtype == TYPE_FIELD)
5077 var->constval.vfield = cval;
5079 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
5085 shunt sy = { NULL, NULL };
5088 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
5089 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
5090 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
5091 if (!parser_sy_apply_operator(parser, &sy))
5094 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
5095 parseerror(parser, "internal error: leaked operands");
5096 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
5106 if (parser->tok == ',') {
5107 if (!parser_next(parser)) {
5108 parseerror(parser, "expected another variable");
5112 if (parser->tok != TOKEN_IDENT) {
5113 parseerror(parser, "expected another variable");
5116 var = ast_value_copy(basetype);
5118 ast_value_set_name(var, parser_tokval(parser));
5119 if (!parser_next(parser)) {
5120 parseerror(parser, "error parsing variable declaration");
5126 if (parser->tok != ';') {
5127 parseerror(parser, "missing semicolon after variables");
5131 if (!parser_next(parser)) {
5132 parseerror(parser, "parse error after variable declaration");
5136 ast_delete(basetype);
5140 if (cleanvar && var)
5142 ast_delete(basetype);
5146 ast_delete(basetype);
5147 if (cleanvar && var)
5149 if (me[0]) ast_member_delete(me[0]);
5150 if (me[1]) ast_member_delete(me[1]);
5151 if (me[2]) ast_member_delete(me[2]);
5155 static bool parser_global_statement(parser_t *parser)
5159 bool is_static = false;
5160 uint32_t qflags = 0;
5161 ast_value *istype = NULL;
5162 char *vstring = NULL;
5164 if (parser->tok == TOKEN_IDENT)
5165 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
5167 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
5169 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false, 0, NULL);
5171 else if (parse_qualifiers(parser, false, &cvq, &noref, &is_static, &qflags, &vstring))
5173 if (cvq == CV_WRONG)
5175 return parse_variable(parser, NULL, true, cvq, NULL, noref, is_static, qflags, vstring);
5177 else if (parser->tok == TOKEN_KEYWORD)
5179 if (!strcmp(parser_tokval(parser), "typedef")) {
5180 if (!parser_next(parser)) {
5181 parseerror(parser, "expected type definition after 'typedef'");
5184 return parse_typedef(parser);
5186 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
5189 else if (parser->tok == '#')
5191 return parse_pragma(parser);
5193 else if (parser->tok == '$')
5195 if (!parser_next(parser)) {
5196 parseerror(parser, "parse error");
5202 parseerror(parser, "unexpected token: %s", parser->lex->tok.value);
5208 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
5210 return util_crc16(old, str, strlen(str));
5213 static void progdefs_crc_file(const char *str)
5215 /* write to progdefs.h here */
5219 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
5221 old = progdefs_crc_sum(old, str);
5222 progdefs_crc_file(str);
5226 static void generate_checksum(parser_t *parser)
5228 uint16_t crc = 0xFFFF;
5232 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
5233 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
5235 progdefs_crc_file("\tint\tpad;\n");
5236 progdefs_crc_file("\tint\tofs_return[3];\n");
5237 progdefs_crc_file("\tint\tofs_parm0[3];\n");
5238 progdefs_crc_file("\tint\tofs_parm1[3];\n");
5239 progdefs_crc_file("\tint\tofs_parm2[3];\n");
5240 progdefs_crc_file("\tint\tofs_parm3[3];\n");
5241 progdefs_crc_file("\tint\tofs_parm4[3];\n");
5242 progdefs_crc_file("\tint\tofs_parm5[3];\n");
5243 progdefs_crc_file("\tint\tofs_parm6[3];\n");
5244 progdefs_crc_file("\tint\tofs_parm7[3];\n");
5246 for (i = 0; i < parser->crc_globals; ++i) {
5247 if (!ast_istype(parser->globals[i], ast_value))
5249 value = (ast_value*)(parser->globals[i]);
5250 switch (value->expression.vtype) {
5251 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5252 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5253 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5254 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5256 crc = progdefs_crc_both(crc, "\tint\t");
5259 crc = progdefs_crc_both(crc, value->name);
5260 crc = progdefs_crc_both(crc, ";\n");
5262 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
5263 for (i = 0; i < parser->crc_fields; ++i) {
5264 if (!ast_istype(parser->fields[i], ast_value))
5266 value = (ast_value*)(parser->fields[i]);
5267 switch (value->expression.next->expression.vtype) {
5268 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5269 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5270 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5271 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5273 crc = progdefs_crc_both(crc, "\tint\t");
5276 crc = progdefs_crc_both(crc, value->name);
5277 crc = progdefs_crc_both(crc, ";\n");
5279 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
5284 static parser_t *parser;
5291 parser = (parser_t*)mem_a(sizeof(parser_t));
5295 memset(parser, 0, sizeof(*parser));
5297 for (i = 0; i < operator_count; ++i) {
5298 if (operators[i].id == opid1('=')) {
5299 parser->assign_op = operators+i;
5303 if (!parser->assign_op) {
5304 printf("internal error: initializing parser: failed to find assign operator\n");
5309 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
5310 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
5311 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
5312 vec_push(parser->_blocktypedefs, 0);
5314 empty_ctx.file = "<internal>";
5316 parser->nil = ast_value_new(empty_ctx, "nil", TYPE_NIL);
5317 parser->nil->cvq = CV_CONST;
5318 if (OPTS_FLAG(UNTYPED_NIL))
5319 util_htset(parser->htglobals, "nil", (void*)parser->nil);
5323 bool parser_compile()
5325 /* initial lexer/parser state */
5326 parser->lex->flags.noops = true;
5328 if (parser_next(parser))
5330 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
5332 if (!parser_global_statement(parser)) {
5333 if (parser->tok == TOKEN_EOF)
5334 parseerror(parser, "unexpected eof");
5335 else if (compile_errors)
5336 parseerror(parser, "there have been errors, bailing out");
5337 lex_close(parser->lex);
5343 parseerror(parser, "parse error");
5344 lex_close(parser->lex);
5349 lex_close(parser->lex);
5352 return !compile_errors;
5355 bool parser_compile_file(const char *filename)
5357 parser->lex = lex_open(filename);
5359 con_err("failed to open file \"%s\"\n", filename);
5362 return parser_compile();
5365 bool parser_compile_string(const char *name, const char *str, size_t len)
5367 parser->lex = lex_open_string(str, len, name);
5369 con_err("failed to create lexer for string \"%s\"\n", name);
5372 return parser_compile();
5375 void parser_cleanup()
5378 for (i = 0; i < vec_size(parser->accessors); ++i) {
5379 ast_delete(parser->accessors[i]->constval.vfunc);
5380 parser->accessors[i]->constval.vfunc = NULL;
5381 ast_delete(parser->accessors[i]);
5383 for (i = 0; i < vec_size(parser->functions); ++i) {
5384 ast_delete(parser->functions[i]);
5386 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
5387 ast_delete(parser->imm_vector[i]);
5389 for (i = 0; i < vec_size(parser->imm_string); ++i) {
5390 ast_delete(parser->imm_string[i]);
5392 for (i = 0; i < vec_size(parser->imm_float); ++i) {
5393 ast_delete(parser->imm_float[i]);
5395 for (i = 0; i < vec_size(parser->fields); ++i) {
5396 ast_delete(parser->fields[i]);
5398 for (i = 0; i < vec_size(parser->globals); ++i) {
5399 ast_delete(parser->globals[i]);
5401 vec_free(parser->accessors);
5402 vec_free(parser->functions);
5403 vec_free(parser->imm_vector);
5404 vec_free(parser->imm_string);
5405 vec_free(parser->imm_float);
5406 vec_free(parser->globals);
5407 vec_free(parser->fields);
5409 for (i = 0; i < vec_size(parser->variables); ++i)
5410 util_htdel(parser->variables[i]);
5411 vec_free(parser->variables);
5412 vec_free(parser->_blocklocals);
5413 vec_free(parser->_locals);
5416 for (i = 0; i < vec_size(parser->correct_variables); ++i) {
5417 correct_del(parser->correct_variables[i], parser->correct_variables_score[i]);
5419 for (i = 0; i < vec_size(parser->correct_variables_score); ++i) {
5420 vec_free(parser->correct_variables_score[i]);
5422 vec_free(parser->correct_variables);
5423 vec_free(parser->correct_variables_score);
5426 for (i = 0; i < vec_size(parser->_typedefs); ++i)
5427 ast_delete(parser->_typedefs[i]);
5428 vec_free(parser->_typedefs);
5429 for (i = 0; i < vec_size(parser->typedefs); ++i)
5430 util_htdel(parser->typedefs[i]);
5431 vec_free(parser->typedefs);
5432 vec_free(parser->_blocktypedefs);
5434 vec_free(parser->_block_ctx);
5436 vec_free(parser->labels);
5437 vec_free(parser->gotos);
5438 vec_free(parser->breaks);
5439 vec_free(parser->continues);
5441 ast_value_delete(parser->nil);
5446 bool parser_finish(const char *output)
5452 if (compile_errors) {
5453 con_out("*** there were compile errors\n");
5457 ir = ir_builder_new("gmqcc_out");
5459 con_out("failed to allocate builder\n");
5463 for (i = 0; i < vec_size(parser->fields); ++i) {
5466 if (!ast_istype(parser->fields[i], ast_value))
5468 field = (ast_value*)parser->fields[i];
5469 hasvalue = field->hasvalue;
5470 field->hasvalue = false;
5471 if (!ast_global_codegen((ast_value*)field, ir, true)) {
5472 con_out("failed to generate field %s\n", field->name);
5473 ir_builder_delete(ir);
5478 ast_expression *subtype;
5479 field->hasvalue = true;
5480 subtype = field->expression.next;
5481 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
5482 if (subtype->expression.vtype == TYPE_FIELD)
5483 ifld->fieldtype = subtype->expression.next->expression.vtype;
5484 else if (subtype->expression.vtype == TYPE_FUNCTION)
5485 ifld->outtype = subtype->expression.next->expression.vtype;
5486 (void)!ir_value_set_field(field->ir_v, ifld);
5489 for (i = 0; i < vec_size(parser->globals); ++i) {
5491 if (!ast_istype(parser->globals[i], ast_value))
5493 asvalue = (ast_value*)(parser->globals[i]);
5494 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
5495 retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
5496 "unused global: `%s`", asvalue->name);
5498 if (!ast_global_codegen(asvalue, ir, false)) {
5499 con_out("failed to generate global %s\n", asvalue->name);
5500 ir_builder_delete(ir);
5504 for (i = 0; i < vec_size(parser->imm_float); ++i) {
5505 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
5506 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
5507 ir_builder_delete(ir);
5511 for (i = 0; i < vec_size(parser->imm_string); ++i) {
5512 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
5513 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
5514 ir_builder_delete(ir);
5518 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
5519 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
5520 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
5521 ir_builder_delete(ir);
5525 for (i = 0; i < vec_size(parser->globals); ++i) {
5527 if (!ast_istype(parser->globals[i], ast_value))
5529 asvalue = (ast_value*)(parser->globals[i]);
5530 if (!(asvalue->expression.flags & AST_FLAG_INITIALIZED))
5532 if (asvalue->cvq == CV_CONST && !asvalue->hasvalue)
5533 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_CONSTANT,
5534 "uninitialized constant: `%s`",
5536 else if ((asvalue->cvq == CV_NONE || asvalue->cvq == CV_CONST) && !asvalue->hasvalue)
5537 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_GLOBAL,
5538 "uninitialized global: `%s`",
5541 if (!ast_generate_accessors(asvalue, ir)) {
5542 ir_builder_delete(ir);
5546 for (i = 0; i < vec_size(parser->fields); ++i) {
5548 asvalue = (ast_value*)(parser->fields[i]->expression.next);
5550 if (!ast_istype((ast_expression*)asvalue, ast_value))
5552 if (asvalue->expression.vtype != TYPE_ARRAY)
5554 if (!ast_generate_accessors(asvalue, ir)) {
5555 ir_builder_delete(ir);
5559 for (i = 0; i < vec_size(parser->functions); ++i) {
5560 if (!ast_function_codegen(parser->functions[i], ir)) {
5561 con_out("failed to generate function %s\n", parser->functions[i]->name);
5562 ir_builder_delete(ir);
5567 ir_builder_dump(ir, con_out);
5568 for (i = 0; i < vec_size(parser->functions); ++i) {
5569 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
5570 con_out("failed to finalize function %s\n", parser->functions[i]->name);
5571 ir_builder_delete(ir);
5576 if (compile_Werrors) {
5577 con_out("*** there were warnings treated as errors\n");
5578 compile_show_werrors();
5584 ir_builder_dump(ir, con_out);
5586 generate_checksum(parser);
5588 if (!ir_builder_generate(ir, output)) {
5589 con_out("*** failed to generate output file\n");
5590 ir_builder_delete(ir);
5595 ir_builder_delete(ir);