5 * Permission is hereby granted, free of charge, to any person obtaining a copy of
6 * this software and associated documentation files (the "Software"), to deal in
7 * the Software without restriction, including without limitation the rights to
8 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
9 * of the Software, and to permit persons to whom the Software is furnished to do
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12 * The above copyright notice and this permission notice shall be included in all
13 * copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
29 #define PARSER_HT_FIELDS 0
30 #define PARSER_HT_GLOBALS 1
31 /* beginning of locals */
32 #define PARSER_HT_LOCALS 2
34 #define PARSER_HT_SIZE 1024
35 #define TYPEDEF_HT_SIZE 16
41 ast_expression **globals;
42 ast_expression **fields;
43 ast_function **functions;
44 ast_value **imm_float;
45 ast_value **imm_string;
46 ast_value **imm_vector;
49 /* must be deleted first, they reference immediates and values */
50 ast_value **accessors;
52 ast_value *imm_float_zero;
53 ast_value *imm_float_one;
54 ast_value *imm_vector_zero;
59 ast_function *function;
61 /* All the labels the function defined...
62 * Should they be in ast_function instead?
67 /* A list of hashtables for each scope */
73 /* not to be used directly, we use the hash table */
74 ast_expression **_locals;
76 ast_value **_typedefs;
77 size_t *_blocktypedefs;
82 /* we store the '=' operator info */
83 const oper_info *assign_op;
85 /* TYPE_FIELD -> parser_find_fields is used instead of find_var
86 * TODO: TYPE_VECTOR -> x, y and z are accepted in the gmqcc standard
87 * anything else: type error
91 /* Keep track of our ternary vs parenthesis nesting state.
92 * If we reach a 'comma' operator in a ternary without a paren,
93 * we shall trigger -Wternary-precedence.
95 enum { POT_PAREN, POT_TERNARY1, POT_TERNARY2 } *pot;
101 static const ast_expression *intrinsic_debug_typestring = (ast_expression*)0x10;
103 static void parser_enterblock(parser_t *parser);
104 static bool parser_leaveblock(parser_t *parser);
105 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e);
106 static bool parse_typedef(parser_t *parser);
107 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref);
108 static ast_block* parse_block(parser_t *parser);
109 static bool parse_block_into(parser_t *parser, ast_block *block);
110 static bool parse_statement_or_block(parser_t *parser, ast_expression **out);
111 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases);
112 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma);
113 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma);
115 static void parseerror(parser_t *parser, const char *fmt, ...)
122 con_vprintmsg(LVL_ERROR, parser->lex->tok.ctx.file, parser->lex->tok.ctx.line, "parse error", fmt, ap);
126 /* returns true if it counts as an error */
127 static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
132 r = vcompile_warning(parser->lex->tok.ctx, warntype, fmt, ap);
137 static bool GMQCC_WARN genwarning(lex_ctx ctx, int warntype, const char *fmt, ...)
142 r = vcompile_warning(ctx, warntype, fmt, ap);
147 /**********************************************************************
148 * some maths used for constant folding
151 vector vec3_add(vector a, vector b)
160 vector vec3_sub(vector a, vector b)
169 qcfloat vec3_mulvv(vector a, vector b)
171 return (a.x * b.x + a.y * b.y + a.z * b.z);
174 vector vec3_mulvf(vector a, float b)
183 /**********************************************************************
187 bool parser_next(parser_t *parser)
189 /* lex_do kills the previous token */
190 parser->tok = lex_do(parser->lex);
191 if (parser->tok == TOKEN_EOF)
193 if (parser->tok >= TOKEN_ERROR) {
194 parseerror(parser, "lex error");
200 #define parser_tokval(p) ((p)->lex->tok.value)
201 #define parser_token(p) (&((p)->lex->tok))
202 #define parser_ctx(p) ((p)->lex->tok.ctx)
204 static ast_value* parser_const_float(parser_t *parser, double d)
208 for (i = 0; i < vec_size(parser->imm_float); ++i) {
209 const double compare = parser->imm_float[i]->constval.vfloat;
210 if (memcmp((const void*)&compare, (const void *)&d, sizeof(double)) == 0)
211 return parser->imm_float[i];
213 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_FLOAT);
215 out->hasvalue = true;
216 out->constval.vfloat = d;
217 vec_push(parser->imm_float, out);
221 static ast_value* parser_const_float_0(parser_t *parser)
223 if (!parser->imm_float_zero)
224 parser->imm_float_zero = parser_const_float(parser, 0);
225 return parser->imm_float_zero;
228 static ast_value* parser_const_float_1(parser_t *parser)
230 if (!parser->imm_float_one)
231 parser->imm_float_one = parser_const_float(parser, 1);
232 return parser->imm_float_one;
235 static char *parser_strdup(const char *str)
238 /* actually dup empty strings */
239 char *out = mem_a(1);
243 return util_strdup(str);
246 static ast_value* parser_const_string(parser_t *parser, const char *str, bool dotranslate)
250 for (i = 0; i < vec_size(parser->imm_string); ++i) {
251 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
252 return parser->imm_string[i];
256 snprintf(name, sizeof(name), "dotranslate_%lu", (unsigned long)(parser->translated++));
257 out = ast_value_new(parser_ctx(parser), name, TYPE_STRING);
259 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
261 out->hasvalue = true;
262 out->constval.vstring = parser_strdup(str);
263 vec_push(parser->imm_string, out);
267 static ast_value* parser_const_vector(parser_t *parser, vector v)
271 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
272 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
273 return parser->imm_vector[i];
275 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
277 out->hasvalue = true;
278 out->constval.vvec = v;
279 vec_push(parser->imm_vector, out);
283 static ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
289 return parser_const_vector(parser, v);
292 static ast_value* parser_const_vector_0(parser_t *parser)
294 if (!parser->imm_vector_zero)
295 parser->imm_vector_zero = parser_const_vector_f(parser, 0, 0, 0);
296 return parser->imm_vector_zero;
299 static ast_expression* parser_find_field(parser_t *parser, const char *name)
301 return util_htget(parser->htfields, name);
304 static ast_expression* parser_find_global(parser_t *parser, const char *name)
306 return util_htget(parser->htglobals, name);
309 static ast_expression* parser_find_param(parser_t *parser, const char *name)
313 if (!parser->function)
315 fun = parser->function->vtype;
316 for (i = 0; i < vec_size(fun->expression.params); ++i) {
317 if (!strcmp(fun->expression.params[i]->name, name))
318 return (ast_expression*)(fun->expression.params[i]);
323 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
328 hash = util_hthash(parser->htglobals, name);
331 for (i = vec_size(parser->variables); i > upto;) {
333 if ( (e = util_htgeth(parser->variables[i], name, hash)) )
337 return parser_find_param(parser, name);
340 static ast_expression* parser_find_var(parser_t *parser, const char *name)
344 v = parser_find_local(parser, name, 0, &dummy);
345 if (!v) v = parser_find_global(parser, name);
349 static ast_value* parser_find_typedef(parser_t *parser, const char *name, size_t upto)
353 hash = util_hthash(parser->typedefs[0], name);
355 for (i = vec_size(parser->typedefs); i > upto;) {
357 if ( (e = (ast_value*)util_htgeth(parser->typedefs[i], name, hash)) )
365 size_t etype; /* 0 = expression, others are operators */
369 ast_block *block; /* for commas and function calls */
378 #define SY_PAREN_EXPR '('
379 #define SY_PAREN_FUNC 'f'
380 #define SY_PAREN_INDEX '['
381 #define SY_PAREN_TERNARY '?'
383 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
394 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
398 e.out = (ast_expression*)v;
405 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
407 e.etype = 1 + (op - operators);
416 static sy_elem syparen(lex_ctx ctx, int p, size_t off) {
428 # define DEBUGSHUNTDO(x) x
430 # define DEBUGSHUNTDO(x)
433 /* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
434 * so we need to rotate it to become ent.(foo[n]).
436 static bool rotate_entfield_array_index_nodes(ast_expression **out)
438 ast_array_index *index;
439 ast_entfield *entfield;
443 ast_expression *entity;
445 lex_ctx ctx = ast_ctx(*out);
447 if (!ast_istype(*out, ast_array_index))
449 index = (ast_array_index*)*out;
451 if (!ast_istype(index->array, ast_entfield))
453 entfield = (ast_entfield*)index->array;
455 if (!ast_istype(entfield->field, ast_value))
457 field = (ast_value*)entfield->field;
460 entity = entfield->entity;
464 index = ast_array_index_new(ctx, (ast_expression*)field, sub);
465 entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
466 *out = (ast_expression*)entfield;
471 static bool parser_sy_apply_operator(parser_t *parser, shunt *sy)
475 ast_expression *out = NULL;
476 ast_expression *exprs[3];
477 ast_block *blocks[3];
478 ast_value *asvalue[3];
479 ast_binstore *asbinstore;
480 size_t i, assignop, addop, subop;
481 qcint generated_op = 0;
486 if (!vec_size(sy->ops)) {
487 parseerror(parser, "internal error: missing operator");
491 if (vec_last(sy->ops).paren) {
492 parseerror(parser, "unmatched parenthesis");
496 op = &operators[vec_last(sy->ops).etype - 1];
497 ctx = vec_last(sy->ops).ctx;
499 DEBUGSHUNTDO(con_out("apply %s\n", op->op));
501 if (vec_size(sy->out) < op->operands) {
502 parseerror(parser, "internal error: not enough operands: %i (operator %s (%i))", vec_size(sy->out),
503 op->op, (int)op->id);
507 vec_shrinkby(sy->ops, 1);
509 /* op(:?) has no input and no output */
513 vec_shrinkby(sy->out, op->operands);
514 for (i = 0; i < op->operands; ++i) {
515 exprs[i] = sy->out[vec_size(sy->out)+i].out;
516 blocks[i] = sy->out[vec_size(sy->out)+i].block;
517 asvalue[i] = (ast_value*)exprs[i];
520 if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
521 parseerror(parser, "internal error: operator cannot be applied on empty blocks");
525 #define NotSameType(T) \
526 (exprs[0]->expression.vtype != exprs[1]->expression.vtype || \
527 exprs[0]->expression.vtype != T)
528 #define CanConstFold1(A) \
529 (ast_istype((A), ast_value) && ((ast_value*)(A))->hasvalue && (((ast_value*)(A))->cvq == CV_CONST))
530 #define CanConstFold(A, B) \
531 (CanConstFold1(A) && CanConstFold1(B))
532 #define ConstV(i) (asvalue[(i)]->constval.vvec)
533 #define ConstF(i) (asvalue[(i)]->constval.vfloat)
534 #define ConstS(i) (asvalue[(i)]->constval.vstring)
538 parseerror(parser, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
542 if (exprs[0]->expression.vtype == TYPE_ENTITY) {
543 if (exprs[1]->expression.vtype != TYPE_FIELD) {
544 parseerror(parser, "type error: right hand of member-operand should be an entity-field");
547 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
549 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
550 parseerror(parser, "internal error: vector access is not supposed to be handled at this point");
554 parseerror(parser, "type error: member-of operator on something that is not an entity or vector");
560 if (exprs[0]->expression.vtype != TYPE_ARRAY &&
561 !(exprs[0]->expression.vtype == TYPE_FIELD &&
562 exprs[0]->expression.next->expression.vtype == TYPE_ARRAY))
564 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
565 parseerror(parser, "cannot index value of type %s", ty1);
568 if (exprs[1]->expression.vtype != TYPE_FLOAT) {
569 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
570 parseerror(parser, "index must be of type float, not %s", ty1);
573 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
574 if (rotate_entfield_array_index_nodes(&out))
577 /* This is not broken in fteqcc anymore */
578 if (opts.standard != COMPILER_GMQCC) {
579 /* this error doesn't need to make us bail out */
580 (void)!parsewarning(parser, WARN_EXTENSIONS,
581 "accessing array-field members of an entity without parenthesis\n"
582 " -> this is an extension from -std=gmqcc");
590 if (!ast_block_add_expr(blocks[0], exprs[1]))
593 blocks[0] = ast_block_new(ctx);
594 if (!ast_block_add_expr(blocks[0], exprs[0]) ||
595 !ast_block_add_expr(blocks[0], exprs[1]))
600 if (!ast_block_set_type(blocks[0], exprs[1]))
603 vec_push(sy->out, syblock(ctx, blocks[0]));
610 switch (exprs[0]->expression.vtype) {
612 if (CanConstFold1(exprs[0]))
613 out = (ast_expression*)parser_const_float(parser, -ConstF(0));
615 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
616 (ast_expression*)parser_const_float_0(parser),
620 if (CanConstFold1(exprs[0]))
621 out = (ast_expression*)parser_const_vector_f(parser,
622 -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
624 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
625 (ast_expression*)parser_const_vector_0(parser),
629 parseerror(parser, "invalid types used in expression: cannot negate type %s",
630 type_name[exprs[0]->expression.vtype]);
636 switch (exprs[0]->expression.vtype) {
638 if (CanConstFold1(exprs[0]))
639 out = (ast_expression*)parser_const_float(parser, !ConstF(0));
641 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
644 if (CanConstFold1(exprs[0]))
645 out = (ast_expression*)parser_const_float(parser,
646 (!ConstV(0).x && !ConstV(0).y && !ConstV(0).z));
648 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
651 if (CanConstFold1(exprs[0]))
652 out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
654 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
656 /* we don't constant-fold NOT for these types */
658 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
661 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
664 parseerror(parser, "invalid types used in expression: cannot logically negate type %s",
665 type_name[exprs[0]->expression.vtype]);
671 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
672 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
674 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
675 type_name[exprs[0]->expression.vtype],
676 type_name[exprs[1]->expression.vtype]);
679 switch (exprs[0]->expression.vtype) {
681 if (CanConstFold(exprs[0], exprs[1]))
683 out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
686 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
689 if (CanConstFold(exprs[0], exprs[1]))
690 out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
692 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
695 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
696 type_name[exprs[0]->expression.vtype],
697 type_name[exprs[1]->expression.vtype]);
702 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
703 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
705 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
706 type_name[exprs[1]->expression.vtype],
707 type_name[exprs[0]->expression.vtype]);
710 switch (exprs[0]->expression.vtype) {
712 if (CanConstFold(exprs[0], exprs[1]))
713 out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
715 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
718 if (CanConstFold(exprs[0], exprs[1]))
719 out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
721 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
724 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
725 type_name[exprs[1]->expression.vtype],
726 type_name[exprs[0]->expression.vtype]);
731 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
732 exprs[0]->expression.vtype != TYPE_VECTOR &&
733 exprs[0]->expression.vtype != TYPE_FLOAT &&
734 exprs[1]->expression.vtype != TYPE_VECTOR &&
735 exprs[1]->expression.vtype != TYPE_FLOAT)
737 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
738 type_name[exprs[1]->expression.vtype],
739 type_name[exprs[0]->expression.vtype]);
742 switch (exprs[0]->expression.vtype) {
744 if (exprs[1]->expression.vtype == TYPE_VECTOR)
746 if (CanConstFold(exprs[0], exprs[1]))
747 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
749 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
753 if (CanConstFold(exprs[0], exprs[1]))
754 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
756 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
760 if (exprs[1]->expression.vtype == TYPE_FLOAT)
762 if (CanConstFold(exprs[0], exprs[1]))
763 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
765 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
769 if (CanConstFold(exprs[0], exprs[1]))
770 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
772 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
776 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
777 type_name[exprs[1]->expression.vtype],
778 type_name[exprs[0]->expression.vtype]);
783 if (NotSameType(TYPE_FLOAT)) {
784 parseerror(parser, "invalid types used in expression: cannot divide types %s and %s",
785 type_name[exprs[0]->expression.vtype],
786 type_name[exprs[1]->expression.vtype]);
789 if (CanConstFold(exprs[0], exprs[1]))
790 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
792 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
796 parseerror(parser, "qc does not have a modulo operator");
800 if (NotSameType(TYPE_FLOAT)) {
801 parseerror(parser, "invalid types used in expression: cannot perform bit operations between types %s and %s",
802 type_name[exprs[0]->expression.vtype],
803 type_name[exprs[1]->expression.vtype]);
806 if (CanConstFold(exprs[0], exprs[1]))
807 out = (ast_expression*)parser_const_float(parser,
808 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
809 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
811 out = (ast_expression*)ast_binary_new(ctx,
812 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
816 parseerror(parser, "TODO: bitxor");
821 case opid3('<','<','='):
822 case opid3('>','>','='):
823 parseerror(parser, "TODO: shifts");
827 generated_op += 1; /* INSTR_OR */
829 generated_op += INSTR_AND;
831 if (NotSameType(TYPE_FLOAT)) {
832 parseerror(parser, "invalid types used in expression: cannot perform logical operations between types %s and %s",
833 type_name[exprs[0]->expression.vtype],
834 type_name[exprs[1]->expression.vtype]);
835 parseerror(parser, "TODO: logical ops for arbitrary types using INSTR_NOT");
836 parseerror(parser, "TODO: optional early out");
840 if (CanConstFold(exprs[0], exprs[1]))
841 out = (ast_expression*)parser_const_float(parser,
842 (generated_op == INSTR_OR ? (ConstF(0) || ConstF(1)) : (ConstF(0) && ConstF(1))));
844 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
848 if (vec_last(parser->pot) != POT_TERNARY2) {
849 parseerror(parser, "mismatched parenthesis/ternary");
852 vec_pop(parser->pot);
853 if (exprs[1]->expression.vtype != exprs[2]->expression.vtype) {
854 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
855 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
856 parseerror(parser, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
859 if (CanConstFold1(exprs[0]))
860 out = (ConstF(0) ? exprs[1] : exprs[2]);
862 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
866 generated_op += 1; /* INSTR_GT */
868 generated_op += 1; /* INSTR_LT */
869 case opid2('>', '='):
870 generated_op += 1; /* INSTR_GE */
871 case opid2('<', '='):
872 generated_op += INSTR_LE;
873 if (NotSameType(TYPE_FLOAT)) {
874 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
875 type_name[exprs[0]->expression.vtype],
876 type_name[exprs[1]->expression.vtype]);
879 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
881 case opid2('!', '='):
882 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
883 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
884 type_name[exprs[0]->expression.vtype],
885 type_name[exprs[1]->expression.vtype]);
888 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
890 case opid2('=', '='):
891 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
892 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
893 type_name[exprs[0]->expression.vtype],
894 type_name[exprs[1]->expression.vtype]);
897 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
901 if (ast_istype(exprs[0], ast_entfield)) {
902 ast_expression *field = ((ast_entfield*)exprs[0])->field;
903 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
904 exprs[0]->expression.vtype == TYPE_FIELD &&
905 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
907 assignop = type_storep_instr[TYPE_VECTOR];
910 assignop = type_storep_instr[exprs[0]->expression.vtype];
911 if (assignop == AINSTR_END ||
912 !ast_compare_type(field->expression.next, exprs[1]))
914 ast_type_to_string(field->expression.next, ty1, sizeof(ty1));
915 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
916 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
917 field->expression.next->expression.vtype == TYPE_FUNCTION &&
918 exprs[1]->expression.vtype == TYPE_FUNCTION)
920 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
921 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
927 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
932 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
933 exprs[0]->expression.vtype == TYPE_FIELD &&
934 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
936 assignop = type_store_instr[TYPE_VECTOR];
939 assignop = type_store_instr[exprs[0]->expression.vtype];
942 if (assignop == AINSTR_END) {
943 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
944 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
945 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
947 else if (!ast_compare_type(exprs[0], exprs[1])) {
948 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
949 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
950 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
951 exprs[0]->expression.vtype == TYPE_FUNCTION &&
952 exprs[1]->expression.vtype == TYPE_FUNCTION)
954 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
955 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
961 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
964 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
965 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
967 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
969 case opid3('+','+','P'):
970 case opid3('-','-','P'):
972 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
973 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
974 parseerror(parser, "invalid type for prefix increment: %s", ty1);
977 if (op->id == opid3('+','+','P'))
981 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
982 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
984 if (ast_istype(exprs[0], ast_entfield)) {
985 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
987 (ast_expression*)parser_const_float_1(parser));
989 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
991 (ast_expression*)parser_const_float_1(parser));
994 case opid3('S','+','+'):
995 case opid3('S','-','-'):
997 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
998 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
999 parseerror(parser, "invalid type for suffix increment: %s", ty1);
1002 if (op->id == opid3('S','+','+')) {
1003 addop = INSTR_ADD_F;
1004 subop = INSTR_SUB_F;
1006 addop = INSTR_SUB_F;
1007 subop = INSTR_ADD_F;
1009 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1010 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1012 if (ast_istype(exprs[0], ast_entfield)) {
1013 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1015 (ast_expression*)parser_const_float_1(parser));
1017 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1019 (ast_expression*)parser_const_float_1(parser));
1023 out = (ast_expression*)ast_binary_new(ctx, subop,
1025 (ast_expression*)parser_const_float_1(parser));
1027 case opid2('+','='):
1028 case opid2('-','='):
1029 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
1030 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
1032 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1033 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1034 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1038 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1039 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1041 if (ast_istype(exprs[0], ast_entfield))
1042 assignop = type_storep_instr[exprs[0]->expression.vtype];
1044 assignop = type_store_instr[exprs[0]->expression.vtype];
1045 switch (exprs[0]->expression.vtype) {
1047 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1048 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
1049 exprs[0], exprs[1]);
1052 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1053 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1054 exprs[0], exprs[1]);
1057 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1058 type_name[exprs[0]->expression.vtype],
1059 type_name[exprs[1]->expression.vtype]);
1063 case opid2('*','='):
1064 case opid2('/','='):
1065 if (exprs[1]->expression.vtype != TYPE_FLOAT ||
1066 !(exprs[0]->expression.vtype == TYPE_FLOAT ||
1067 exprs[0]->expression.vtype == TYPE_VECTOR))
1069 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1070 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1071 parseerror(parser, "invalid types used in expression: %s and %s",
1075 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1076 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1078 if (ast_istype(exprs[0], ast_entfield))
1079 assignop = type_storep_instr[exprs[0]->expression.vtype];
1081 assignop = type_store_instr[exprs[0]->expression.vtype];
1082 switch (exprs[0]->expression.vtype) {
1084 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1085 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1086 exprs[0], exprs[1]);
1089 if (op->id == opid2('*','=')) {
1090 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1091 exprs[0], exprs[1]);
1093 /* there's no DIV_VF */
1094 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
1095 (ast_expression*)parser_const_float_1(parser),
1099 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1104 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1105 type_name[exprs[0]->expression.vtype],
1106 type_name[exprs[1]->expression.vtype]);
1110 case opid2('&','='):
1111 case opid2('|','='):
1112 if (NotSameType(TYPE_FLOAT)) {
1113 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1114 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1115 parseerror(parser, "invalid types used in expression: %s and %s",
1119 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1120 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1122 if (ast_istype(exprs[0], ast_entfield))
1123 assignop = type_storep_instr[exprs[0]->expression.vtype];
1125 assignop = type_store_instr[exprs[0]->expression.vtype];
1126 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1127 (op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1128 exprs[0], exprs[1]);
1130 case opid3('&','~','='):
1131 /* This is like: a &= ~(b);
1132 * But QC has no bitwise-not, so we implement it as
1135 if (NotSameType(TYPE_FLOAT)) {
1136 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1137 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1138 parseerror(parser, "invalid types used in expression: %s and %s",
1142 if (ast_istype(exprs[0], ast_entfield))
1143 assignop = type_storep_instr[exprs[0]->expression.vtype];
1145 assignop = type_store_instr[exprs[0]->expression.vtype];
1146 out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1149 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1150 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1152 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1153 asbinstore->keep_dest = true;
1154 out = (ast_expression*)asbinstore;
1160 parseerror(parser, "failed to apply operand %s", op->op);
1164 DEBUGSHUNTDO(con_out("applied %s\n", op->op));
1165 vec_push(sy->out, syexp(ctx, out));
1169 static bool parser_close_call(parser_t *parser, shunt *sy)
1171 /* was a function call */
1172 ast_expression *fun;
1178 vec_shrinkby(sy->ops, 1);
1179 fid = sy->ops[vec_size(sy->ops)].off;
1181 /* out[fid] is the function
1182 * everything above is parameters...
1183 * 0 params = nothing
1184 * 1 params = ast_expression
1188 if (vec_size(sy->out) < 1 || vec_size(sy->out) <= fid) {
1189 parseerror(parser, "internal error: function call needs function and parameter list...");
1193 fun = sy->out[fid].out;
1195 if (fun == intrinsic_debug_typestring) {
1197 if (fid+2 != vec_size(sy->out) ||
1198 vec_last(sy->out).block)
1200 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1203 ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
1204 ast_unref(vec_last(sy->out).out);
1205 sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
1206 (ast_expression*)parser_const_string(parser, ty, false));
1207 vec_shrinkby(sy->out, 1);
1211 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1213 parseerror(parser, "internal error: failed to create ast_call node");
1217 if (fid+1 == vec_size(sy->out)) {
1220 } else if (fid+2 == vec_size(sy->out)) {
1222 vec_shrinkby(sy->out, 1);
1223 params = sy->out[vec_size(sy->out)].block;
1227 vec_push(call->params, sy->out[vec_size(sy->out)].out);
1229 paramcount = vec_size(params->exprs);
1230 call->params = params->exprs;
1231 params->exprs = NULL;
1234 if (!ast_call_check_types(call))
1237 parseerror(parser, "invalid function call");
1241 /* overwrite fid, the function, with a call */
1242 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1244 if (fun->expression.vtype != TYPE_FUNCTION) {
1245 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
1249 if (!fun->expression.next) {
1250 parseerror(parser, "could not determine function return type");
1253 if (vec_size(fun->expression.params) != paramcount &&
1254 !(fun->expression.variadic &&
1255 vec_size(fun->expression.params) < paramcount))
1258 const char *fewmany = (vec_size(fun->expression.params) > paramcount) ? "few" : "many";
1260 fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1261 if (opts.standard == COMPILER_GMQCC)
1264 parseerror(parser, "too %s parameters for call to %s: expected %i, got %i\n"
1265 " -> `%s` has been declared here: %s:%i",
1266 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1267 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1269 parseerror(parser, "too %s parameters for function call: expected %i, got %i\n"
1270 " -> `%s` has been declared here: %s:%i",
1271 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1272 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1278 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1279 "too %s parameters for call to %s: expected %i, got %i\n"
1280 " -> `%s` has been declared here: %s:%i",
1281 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1282 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1284 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1285 "too %s parameters for function call: expected %i, got %i\n"
1286 " -> `%s` has been declared here: %s:%i",
1287 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1288 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1296 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
1298 if (!vec_size(sy->ops)) {
1299 parseerror(parser, "unmatched closing paren");
1302 /* this would for bit a + (x) because there are no operators inside (x)
1303 if (sy->ops[vec_size(sy->ops)-1].paren == 1) {
1304 parseerror(parser, "empty parenthesis expression");
1308 while (vec_size(sy->ops)) {
1309 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_FUNC) {
1310 if (!parser_close_call(parser, sy))
1314 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_EXPR) {
1315 vec_shrinkby(sy->ops, 1);
1316 return !functions_only;
1318 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_INDEX) {
1321 /* pop off the parenthesis */
1322 vec_shrinkby(sy->ops, 1);
1323 /* then apply the index operator */
1324 if (!parser_sy_apply_operator(parser, sy))
1328 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_TERNARY) {
1331 if (vec_last(parser->pot) != POT_TERNARY1) {
1332 parseerror(parser, "mismatched colon in ternary expression (missing closing paren?)");
1335 vec_last(parser->pot) = POT_TERNARY2;
1336 /* pop off the parenthesis */
1337 vec_shrinkby(sy->ops, 1);
1340 if (!parser_sy_apply_operator(parser, sy))
1346 static void parser_reclassify_token(parser_t *parser)
1349 for (i = 0; i < operator_count; ++i) {
1350 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1351 parser->tok = TOKEN_OPERATOR;
1357 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma)
1359 ast_expression *expr = NULL;
1361 bool wantop = false;
1362 bool gotmemberof = false;
1364 /* count the parens because an if starts with one, so the
1365 * end of a condition is an unmatched closing paren
1373 parser->lex->flags.noops = false;
1375 parser_reclassify_token(parser);
1380 gotmemberof = false;
1382 parser->memberof = 0;
1384 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1385 parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "_"))
1387 /* a translatable string */
1391 parseerror(parser, "expected operator or end of statement, got constant");
1395 parser->lex->flags.noops = true;
1396 if (!parser_next(parser) || parser->tok != '(') {
1397 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1400 parser->lex->flags.noops = false;
1401 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1402 parseerror(parser, "expected a constant string in translatable-string extension");
1405 val = parser_const_string(parser, parser_tokval(parser), true);
1409 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1410 DEBUGSHUNTDO(con_out("push string\n"));
1412 if (!parser_next(parser) || parser->tok != ')') {
1413 parseerror(parser, "expected closing paren after translatable string");
1417 else if (parser->tok == TOKEN_IDENT)
1419 ast_expression *var;
1421 parseerror(parser, "expected operator or end of statement");
1426 if (opts.standard == COMPILER_GMQCC)
1428 if (parser->memberof == TYPE_ENTITY) {
1429 /* still get vars first since there could be a fieldpointer */
1430 var = parser_find_var(parser, parser_tokval(parser));
1432 var = parser_find_field(parser, parser_tokval(parser));
1434 else if (parser->memberof == TYPE_VECTOR)
1436 parseerror(parser, "TODO: implement effective vector member access");
1439 else if (parser->memberof) {
1440 parseerror(parser, "namespace for member not found");
1444 var = parser_find_var(parser, parser_tokval(parser));
1446 var = parser_find_var(parser, parser_tokval(parser));
1448 var = parser_find_field(parser, parser_tokval(parser));
1452 if (!strcmp(parser_tokval(parser), "__builtin_debug_typestring")) {
1453 var = (ast_expression*)intrinsic_debug_typestring;
1458 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1464 if (ast_istype(var, ast_value)) {
1465 ((ast_value*)var)->uses++;
1467 else if (ast_istype(var, ast_member)) {
1468 ast_member *mem = (ast_member*)var;
1469 if (ast_istype(mem->owner, ast_value))
1470 ((ast_value*)(mem->owner))->uses++;
1473 vec_push(sy.out, syexp(parser_ctx(parser), var));
1474 DEBUGSHUNTDO(con_out("push %s\n", parser_tokval(parser)));
1476 else if (parser->tok == TOKEN_FLOATCONST) {
1479 parseerror(parser, "expected operator or end of statement, got constant");
1483 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1486 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1487 DEBUGSHUNTDO(con_out("push %g\n", parser_token(parser)->constval.f));
1489 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1492 parseerror(parser, "expected operator or end of statement, got constant");
1496 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1499 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1500 DEBUGSHUNTDO(con_out("push %i\n", parser_token(parser)->constval.i));
1502 else if (parser->tok == TOKEN_STRINGCONST) {
1505 parseerror(parser, "expected operator or end of statement, got constant");
1509 val = parser_const_string(parser, parser_tokval(parser), false);
1512 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1513 DEBUGSHUNTDO(con_out("push string\n"));
1515 else if (parser->tok == TOKEN_VECTORCONST) {
1518 parseerror(parser, "expected operator or end of statement, got constant");
1522 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1525 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1526 DEBUGSHUNTDO(con_out("push '%g %g %g'\n",
1527 parser_token(parser)->constval.v.x,
1528 parser_token(parser)->constval.v.y,
1529 parser_token(parser)->constval.v.z));
1531 else if (parser->tok == '(') {
1532 parseerror(parser, "internal error: '(' should be classified as operator");
1535 else if (parser->tok == '[') {
1536 parseerror(parser, "internal error: '[' should be classified as operator");
1539 else if (parser->tok == ')') {
1541 DEBUGSHUNTDO(con_out("do[op] )\n"));
1545 /* we do expect an operator next */
1546 /* closing an opening paren */
1547 if (!parser_close_paren(parser, &sy, false))
1549 if (vec_last(parser->pot) != POT_PAREN) {
1550 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1553 vec_pop(parser->pot);
1555 DEBUGSHUNTDO(con_out("do[nop] )\n"));
1559 /* allowed for function calls */
1560 if (!parser_close_paren(parser, &sy, true))
1562 if (vec_last(parser->pot) != POT_PAREN) {
1563 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1566 vec_pop(parser->pot);
1570 else if (parser->tok == ']') {
1572 parseerror(parser, "operand expected");
1576 if (!parser_close_paren(parser, &sy, false))
1578 if (vec_last(parser->pot) != POT_PAREN) {
1579 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1582 vec_pop(parser->pot);
1585 else if (parser->tok == TOKEN_TYPENAME) {
1586 parseerror(parser, "unexpected typename");
1589 else if (parser->tok != TOKEN_OPERATOR) {
1591 parseerror(parser, "expected operator or end of statement");
1598 /* classify the operator */
1599 const oper_info *op;
1600 const oper_info *olast = NULL;
1602 for (o = 0; o < operator_count; ++o) {
1603 if ((!(operators[o].flags & OP_PREFIX) == wantop) &&
1604 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1605 !strcmp(parser_tokval(parser), operators[o].op))
1610 if (o == operator_count) {
1611 /* no operator found... must be the end of the statement */
1614 /* found an operator */
1617 /* when declaring variables, a comma starts a new variable */
1618 if (op->id == opid1(',') && !parens && stopatcomma) {
1619 /* fixup the token */
1624 /* a colon without a pervious question mark cannot be a ternary */
1625 if (!ternaries && op->id == opid2(':','?')) {
1630 if (op->id == opid1(',')) {
1631 if (vec_size(parser->pot) && vec_last(parser->pot) == POT_TERNARY2) {
1632 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
1636 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1637 olast = &operators[vec_last(sy.ops).etype-1];
1640 (op->prec < olast->prec) ||
1641 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1643 if (!parser_sy_apply_operator(parser, &sy))
1645 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1646 olast = &operators[vec_last(sy.ops).etype-1];
1651 if (op->id == opid1('.') && opts.standard == COMPILER_GMQCC) {
1652 /* for gmqcc standard: open up the namespace of the previous type */
1653 ast_expression *prevex = vec_last(sy.out).out;
1655 parseerror(parser, "unexpected member operator");
1658 if (prevex->expression.vtype == TYPE_ENTITY)
1659 parser->memberof = TYPE_ENTITY;
1660 else if (prevex->expression.vtype == TYPE_VECTOR)
1661 parser->memberof = TYPE_VECTOR;
1663 parseerror(parser, "type error: type has no members");
1669 if (op->id == opid1('(')) {
1671 size_t sycount = vec_size(sy.out);
1672 DEBUGSHUNTDO(con_out("push [op] (\n"));
1673 ++parens; vec_push(parser->pot, POT_PAREN);
1674 /* we expected an operator, this is the function-call operator */
1675 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_FUNC, sycount-1));
1677 ++parens; vec_push(parser->pot, POT_PAREN);
1678 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_EXPR, 0));
1679 DEBUGSHUNTDO(con_out("push [nop] (\n"));
1682 } else if (op->id == opid1('[')) {
1684 parseerror(parser, "unexpected array subscript");
1687 ++parens; vec_push(parser->pot, POT_PAREN);
1688 /* push both the operator and the paren, this makes life easier */
1689 vec_push(sy.ops, syop(parser_ctx(parser), op));
1690 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_INDEX, 0));
1692 } else if (op->id == opid2('?',':')) {
1694 vec_push(sy.ops, syop(parser_ctx(parser), op));
1695 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_TERNARY, 0));
1698 vec_push(parser->pot, POT_TERNARY1);
1699 } else if (op->id == opid2(':','?')) {
1700 if (!vec_size(parser->pot)) {
1701 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1704 if (vec_last(parser->pot) != POT_TERNARY1) {
1705 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1708 if (!parser_close_paren(parser, &sy, false))
1710 vec_push(sy.ops, syop(parser_ctx(parser), op));
1714 DEBUGSHUNTDO(con_out("push operator %s\n", op->op));
1715 vec_push(sy.ops, syop(parser_ctx(parser), op));
1716 wantop = !!(op->flags & OP_SUFFIX);
1719 if (!parser_next(parser)) {
1722 if (parser->tok == ';' ||
1723 (!parens && parser->tok == ']'))
1729 while (vec_size(sy.ops)) {
1730 if (!parser_sy_apply_operator(parser, &sy))
1734 parser->lex->flags.noops = true;
1735 if (!vec_size(sy.out)) {
1736 parseerror(parser, "empty expression");
1739 expr = sy.out[0].out;
1742 DEBUGSHUNTDO(con_out("shunt done\n"));
1743 if (vec_size(parser->pot)) {
1744 parseerror(parser, "internal error: vec_size(parser->pot) = %lu", (unsigned long)vec_size(parser->pot));
1747 vec_free(parser->pot);
1751 parser->lex->flags.noops = true;
1757 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma)
1759 ast_expression *e = parse_expression_leave(parser, stopatcomma);
1762 if (!parser_next(parser)) {
1769 static void parser_enterblock(parser_t *parser)
1771 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
1772 vec_push(parser->_blocklocals, vec_size(parser->_locals));
1773 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
1774 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
1775 vec_push(parser->_block_ctx, parser_ctx(parser));
1778 static bool parser_leaveblock(parser_t *parser)
1781 size_t locals, typedefs;
1783 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
1784 parseerror(parser, "internal error: parser_leaveblock with no block");
1788 util_htdel(vec_last(parser->variables));
1789 vec_pop(parser->variables);
1790 if (!vec_size(parser->_blocklocals)) {
1791 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
1795 locals = vec_last(parser->_blocklocals);
1796 vec_pop(parser->_blocklocals);
1797 while (vec_size(parser->_locals) != locals) {
1798 ast_expression *e = vec_last(parser->_locals);
1799 ast_value *v = (ast_value*)e;
1800 vec_pop(parser->_locals);
1801 if (ast_istype(e, ast_value) && !v->uses) {
1802 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name)) {
1809 typedefs = vec_last(parser->_blocktypedefs);
1810 while (vec_size(parser->_typedefs) != typedefs) {
1811 ast_delete(vec_last(parser->_typedefs));
1812 vec_pop(parser->_typedefs);
1814 util_htdel(vec_last(parser->typedefs));
1815 vec_pop(parser->typedefs);
1817 vec_pop(parser->_block_ctx);
1821 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
1823 vec_push(parser->_locals, e);
1824 util_htset(vec_last(parser->variables), name, (void*)e);
1827 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
1830 ast_expression *cond, *ontrue, *onfalse = NULL;
1833 lex_ctx ctx = parser_ctx(parser);
1835 (void)block; /* not touching */
1837 /* skip the 'if', parse an optional 'not' and check for an opening paren */
1838 if (!parser_next(parser)) {
1839 parseerror(parser, "expected condition or 'not'");
1842 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
1844 if (!parser_next(parser)) {
1845 parseerror(parser, "expected condition in parenthesis");
1849 if (parser->tok != '(') {
1850 parseerror(parser, "expected 'if' condition in parenthesis");
1853 /* parse into the expression */
1854 if (!parser_next(parser)) {
1855 parseerror(parser, "expected 'if' condition after opening paren");
1858 /* parse the condition */
1859 cond = parse_expression_leave(parser, false);
1863 if (parser->tok != ')') {
1864 parseerror(parser, "expected closing paren after 'if' condition");
1868 /* parse into the 'then' branch */
1869 if (!parser_next(parser)) {
1870 parseerror(parser, "expected statement for on-true branch of 'if'");
1874 if (!parse_statement_or_block(parser, &ontrue)) {
1878 /* check for an else */
1879 if (!strcmp(parser_tokval(parser), "else")) {
1880 /* parse into the 'else' branch */
1881 if (!parser_next(parser)) {
1882 parseerror(parser, "expected on-false branch after 'else'");
1887 if (!parse_statement_or_block(parser, &onfalse)) {
1895 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
1897 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
1898 *out = (ast_expression*)ifthen;
1902 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
1905 ast_expression *cond, *ontrue;
1907 lex_ctx ctx = parser_ctx(parser);
1909 (void)block; /* not touching */
1911 /* skip the 'while' and check for opening paren */
1912 if (!parser_next(parser) || parser->tok != '(') {
1913 parseerror(parser, "expected 'while' condition in parenthesis");
1916 /* parse into the expression */
1917 if (!parser_next(parser)) {
1918 parseerror(parser, "expected 'while' condition after opening paren");
1921 /* parse the condition */
1922 cond = parse_expression_leave(parser, false);
1926 if (parser->tok != ')') {
1927 parseerror(parser, "expected closing paren after 'while' condition");
1931 /* parse into the 'then' branch */
1932 if (!parser_next(parser)) {
1933 parseerror(parser, "expected while-loop body");
1937 if (!parse_statement_or_block(parser, &ontrue)) {
1942 aloop = ast_loop_new(ctx, NULL, cond, NULL, NULL, ontrue);
1943 *out = (ast_expression*)aloop;
1947 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
1950 ast_expression *cond, *ontrue;
1952 lex_ctx ctx = parser_ctx(parser);
1954 (void)block; /* not touching */
1956 /* skip the 'do' and get the body */
1957 if (!parser_next(parser)) {
1958 parseerror(parser, "expected loop body");
1961 if (!parse_statement_or_block(parser, &ontrue))
1964 /* expect the "while" */
1965 if (parser->tok != TOKEN_KEYWORD ||
1966 strcmp(parser_tokval(parser), "while"))
1968 parseerror(parser, "expected 'while' and condition");
1973 /* skip the 'while' and check for opening paren */
1974 if (!parser_next(parser) || parser->tok != '(') {
1975 parseerror(parser, "expected 'while' condition in parenthesis");
1979 /* parse into the expression */
1980 if (!parser_next(parser)) {
1981 parseerror(parser, "expected 'while' condition after opening paren");
1985 /* parse the condition */
1986 cond = parse_expression_leave(parser, false);
1990 if (parser->tok != ')') {
1991 parseerror(parser, "expected closing paren after 'while' condition");
1997 if (!parser_next(parser) || parser->tok != ';') {
1998 parseerror(parser, "expected semicolon after condition");
2004 if (!parser_next(parser)) {
2005 parseerror(parser, "parse error");
2011 aloop = ast_loop_new(ctx, NULL, NULL, cond, NULL, ontrue);
2012 *out = (ast_expression*)aloop;
2016 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2019 ast_expression *initexpr, *cond, *increment, *ontrue;
2023 lex_ctx ctx = parser_ctx(parser);
2025 parser_enterblock(parser);
2032 /* skip the 'while' and check for opening paren */
2033 if (!parser_next(parser) || parser->tok != '(') {
2034 parseerror(parser, "expected 'for' expressions in parenthesis");
2037 /* parse into the expression */
2038 if (!parser_next(parser)) {
2039 parseerror(parser, "expected 'for' initializer after opening paren");
2044 if (parser->tok == TOKEN_IDENT)
2045 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2047 if (typevar || parser->tok == TOKEN_TYPENAME) {
2048 if (opts.standard != COMPILER_GMQCC) {
2049 if (parsewarning(parser, WARN_EXTENSIONS,
2050 "current standard does not allow variable declarations in for-loop initializers"))
2053 if (!parse_variable(parser, block, true, CV_VAR, typevar, false))
2056 else if (parser->tok != ';')
2058 initexpr = parse_expression_leave(parser, false);
2063 /* move on to condition */
2064 if (parser->tok != ';') {
2065 parseerror(parser, "expected semicolon after for-loop initializer");
2068 if (!parser_next(parser)) {
2069 parseerror(parser, "expected for-loop condition");
2073 /* parse the condition */
2074 if (parser->tok != ';') {
2075 cond = parse_expression_leave(parser, false);
2080 /* move on to incrementor */
2081 if (parser->tok != ';') {
2082 parseerror(parser, "expected semicolon after for-loop initializer");
2085 if (!parser_next(parser)) {
2086 parseerror(parser, "expected for-loop condition");
2090 /* parse the incrementor */
2091 if (parser->tok != ')') {
2092 increment = parse_expression_leave(parser, false);
2095 if (!ast_side_effects(increment)) {
2096 if (genwarning(ast_ctx(increment), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2102 if (parser->tok != ')') {
2103 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2106 /* parse into the 'then' branch */
2107 if (!parser_next(parser)) {
2108 parseerror(parser, "expected for-loop body");
2111 if (!parse_statement_or_block(parser, &ontrue))
2114 aloop = ast_loop_new(ctx, initexpr, cond, NULL, increment, ontrue);
2115 *out = (ast_expression*)aloop;
2117 if (!parser_leaveblock(parser))
2121 if (initexpr) ast_delete(initexpr);
2122 if (cond) ast_delete(cond);
2123 if (increment) ast_delete(increment);
2124 (void)!parser_leaveblock(parser);
2128 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2130 ast_expression *exp = NULL;
2131 ast_return *ret = NULL;
2132 ast_value *expected = parser->function->vtype;
2134 lex_ctx ctx = parser_ctx(parser);
2136 (void)block; /* not touching */
2138 if (!parser_next(parser)) {
2139 parseerror(parser, "expected return expression");
2143 if (parser->tok != ';') {
2144 exp = parse_expression(parser, false);
2148 if (exp->expression.vtype != expected->expression.next->expression.vtype) {
2149 parseerror(parser, "return with invalid expression");
2152 ret = ast_return_new(exp->expression.node.context, exp);
2158 if (!parser_next(parser))
2159 parseerror(parser, "parse error");
2160 if (expected->expression.next->expression.vtype != TYPE_VOID) {
2161 if (opts.standard != COMPILER_GMQCC)
2162 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2164 parseerror(parser, "return without value");
2166 ret = ast_return_new(ctx, NULL);
2168 *out = (ast_expression*)ret;
2172 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2174 lex_ctx ctx = parser_ctx(parser);
2176 (void)block; /* not touching */
2178 if (!parser_next(parser) || parser->tok != ';') {
2179 parseerror(parser, "expected semicolon");
2183 if (!parser_next(parser))
2184 parseerror(parser, "parse error");
2186 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue);
2190 /* returns true when it was a variable qualifier, false otherwise!
2191 * on error, cvq is set to CV_WRONG
2193 static bool parse_var_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref)
2195 bool had_const = false;
2196 bool had_var = false;
2197 bool had_noref = false;
2200 if (!strcmp(parser_tokval(parser), "const"))
2202 else if (!strcmp(parser_tokval(parser), "var"))
2204 else if (with_local && !strcmp(parser_tokval(parser), "local"))
2206 else if (!strcmp(parser_tokval(parser), "noref"))
2208 else if (!had_const && !had_var && !had_noref) {
2213 if (!parser_next(parser))
2225 parseerror(parser, "parse error after variable qualifier");
2230 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
2232 ast_expression *operand;
2235 ast_switch *switchnode;
2236 ast_switch_case swcase;
2241 lex_ctx ctx = parser_ctx(parser);
2243 (void)block; /* not touching */
2246 /* parse over the opening paren */
2247 if (!parser_next(parser) || parser->tok != '(') {
2248 parseerror(parser, "expected switch operand in parenthesis");
2252 /* parse into the expression */
2253 if (!parser_next(parser)) {
2254 parseerror(parser, "expected switch operand");
2257 /* parse the operand */
2258 operand = parse_expression_leave(parser, false);
2262 switchnode = ast_switch_new(ctx, operand);
2265 if (parser->tok != ')') {
2266 ast_delete(switchnode);
2267 parseerror(parser, "expected closing paren after 'switch' operand");
2271 /* parse over the opening paren */
2272 if (!parser_next(parser) || parser->tok != '{') {
2273 ast_delete(switchnode);
2274 parseerror(parser, "expected list of cases");
2278 if (!parser_next(parser)) {
2279 ast_delete(switchnode);
2280 parseerror(parser, "expected 'case' or 'default'");
2284 /* new block; allow some variables to be declared here */
2285 parser_enterblock(parser);
2288 if (parser->tok == TOKEN_IDENT)
2289 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2290 if (typevar || parser->tok == TOKEN_TYPENAME) {
2291 if (!parse_variable(parser, block, false, CV_NONE, typevar, false)) {
2292 ast_delete(switchnode);
2297 if (parse_var_qualifiers(parser, true, &cvq, &noref))
2299 if (cvq == CV_WRONG) {
2300 ast_delete(switchnode);
2303 if (!parse_variable(parser, block, false, cvq, NULL, noref)) {
2304 ast_delete(switchnode);
2313 while (parser->tok != '}') {
2314 ast_block *caseblock;
2316 if (parser->tok != TOKEN_KEYWORD) {
2317 ast_delete(switchnode);
2318 parseerror(parser, "expected 'case' or 'default'");
2321 if (!strcmp(parser_tokval(parser), "case")) {
2322 if (!parser_next(parser)) {
2323 ast_delete(switchnode);
2324 parseerror(parser, "expected expression for case");
2327 swcase.value = parse_expression_leave(parser, false);
2328 if (!swcase.value) {
2329 ast_delete(switchnode);
2330 parseerror(parser, "expected expression for case");
2333 if (!OPTS_FLAG(RELAXED_SWITCH)) {
2334 opval = (ast_value*)swcase.value;
2335 if (!ast_istype(swcase.value, ast_value)) { /* || opval->cvq != CV_CONST) { */
2336 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
2342 else if (!strcmp(parser_tokval(parser), "default")) {
2343 swcase.value = NULL;
2344 if (!parser_next(parser)) {
2345 ast_delete(switchnode);
2346 parseerror(parser, "expected colon");
2351 /* Now the colon and body */
2352 if (parser->tok != ':') {
2353 if (swcase.value) ast_unref(swcase.value);
2354 ast_delete(switchnode);
2355 parseerror(parser, "expected colon");
2359 if (!parser_next(parser)) {
2360 if (swcase.value) ast_unref(swcase.value);
2361 ast_delete(switchnode);
2362 parseerror(parser, "expected statements or case");
2365 caseblock = ast_block_new(parser_ctx(parser));
2367 if (swcase.value) ast_unref(swcase.value);
2368 ast_delete(switchnode);
2371 swcase.code = (ast_expression*)caseblock;
2372 vec_push(switchnode->cases, swcase);
2374 ast_expression *expr;
2375 if (parser->tok == '}')
2377 if (parser->tok == TOKEN_KEYWORD) {
2378 if (!strcmp(parser_tokval(parser), "case") ||
2379 !strcmp(parser_tokval(parser), "default"))
2384 if (!parse_statement(parser, caseblock, &expr, true)) {
2385 ast_delete(switchnode);
2390 if (!ast_block_add_expr(caseblock, expr)) {
2391 ast_delete(switchnode);
2397 parser_leaveblock(parser);
2400 if (parser->tok != '}') {
2401 ast_delete(switchnode);
2402 parseerror(parser, "expected closing paren of case list");
2405 if (!parser_next(parser)) {
2406 ast_delete(switchnode);
2407 parseerror(parser, "parse error after switch");
2410 *out = (ast_expression*)switchnode;
2414 static bool parse_goto(parser_t *parser, ast_expression **out)
2419 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2420 parseerror(parser, "expected label name after `goto`");
2424 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
2426 for (i = 0; i < vec_size(parser->labels); ++i) {
2427 if (!strcmp(parser->labels[i]->name, parser_tokval(parser))) {
2428 ast_goto_set_label(gt, parser->labels[i]);
2432 if (i == vec_size(parser->labels))
2433 vec_push(parser->gotos, gt);
2435 if (!parser_next(parser) || parser->tok != ';') {
2436 parseerror(parser, "semicolon expected after goto label");
2439 if (!parser_next(parser)) {
2440 parseerror(parser, "parse error after goto");
2444 *out = (ast_expression*)gt;
2448 static bool parse_skipwhite(parser_t *parser)
2451 if (!parser_next(parser))
2453 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
2454 return parser->tok < TOKEN_ERROR;
2457 static bool parse_eol(parser_t *parser)
2459 if (!parse_skipwhite(parser))
2461 return parser->tok == TOKEN_EOL;
2464 static bool parse_pragma_do(parser_t *parser)
2466 if (!parser_next(parser) ||
2467 parser->tok != TOKEN_IDENT ||
2468 strcmp(parser_tokval(parser), "pragma"))
2470 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
2473 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
2474 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
2478 if (!strcmp(parser_tokval(parser), "noref")) {
2479 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
2480 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
2483 parser->noref = !!parser_token(parser)->constval.i;
2484 if (!parse_eol(parser)) {
2485 parseerror(parser, "parse error after `noref` pragma");
2491 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
2498 static bool parse_pragma(parser_t *parser)
2501 parser->lex->flags.preprocessing = true;
2502 parser->lex->flags.mergelines = true;
2503 rv = parse_pragma_do(parser);
2504 if (parser->tok != TOKEN_EOL) {
2505 parseerror(parser, "junk after pragma");
2508 parser->lex->flags.preprocessing = false;
2509 parser->lex->flags.mergelines = false;
2510 if (!parser_next(parser)) {
2511 parseerror(parser, "parse error after pragma");
2517 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
2521 ast_value *typevar = NULL;
2525 if (parser->tok == TOKEN_IDENT)
2526 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2528 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
2530 /* local variable */
2532 parseerror(parser, "cannot declare a variable from here");
2535 if (opts.standard == COMPILER_QCC) {
2536 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
2539 if (!parse_variable(parser, block, false, CV_NONE, typevar, false))
2543 else if (parse_var_qualifiers(parser, !!block, &cvq, &noref))
2545 if (cvq == CV_WRONG)
2547 return parse_variable(parser, block, true, cvq, NULL, noref);
2549 else if (parser->tok == TOKEN_KEYWORD)
2551 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
2556 if (!parser_next(parser)) {
2557 parseerror(parser, "parse error after __builtin_debug_printtype");
2561 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
2563 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
2564 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
2565 if (!parser_next(parser)) {
2566 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
2572 if (!parse_statement(parser, block, out, allow_cases))
2575 con_out("__builtin_debug_printtype: got no output node\n");
2578 ast_type_to_string(*out, ty, sizeof(ty));
2579 con_out("__builtin_debug_printtype: `%s`\n", ty);
2584 else if (!strcmp(parser_tokval(parser), "return"))
2586 return parse_return(parser, block, out);
2588 else if (!strcmp(parser_tokval(parser), "if"))
2590 return parse_if(parser, block, out);
2592 else if (!strcmp(parser_tokval(parser), "while"))
2594 return parse_while(parser, block, out);
2596 else if (!strcmp(parser_tokval(parser), "do"))
2598 return parse_dowhile(parser, block, out);
2600 else if (!strcmp(parser_tokval(parser), "for"))
2602 if (opts.standard == COMPILER_QCC) {
2603 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
2606 return parse_for(parser, block, out);
2608 else if (!strcmp(parser_tokval(parser), "break"))
2610 return parse_break_continue(parser, block, out, false);
2612 else if (!strcmp(parser_tokval(parser), "continue"))
2614 return parse_break_continue(parser, block, out, true);
2616 else if (!strcmp(parser_tokval(parser), "switch"))
2618 return parse_switch(parser, block, out);
2620 else if (!strcmp(parser_tokval(parser), "case") ||
2621 !strcmp(parser_tokval(parser), "default"))
2624 parseerror(parser, "unexpected 'case' label");
2629 else if (!strcmp(parser_tokval(parser), "goto"))
2631 return parse_goto(parser, out);
2633 else if (!strcmp(parser_tokval(parser), "typedef"))
2635 if (!parser_next(parser)) {
2636 parseerror(parser, "expected type definition after 'typedef'");
2639 return parse_typedef(parser);
2641 parseerror(parser, "Unexpected keyword");
2644 else if (parser->tok == '{')
2647 inner = parse_block(parser);
2650 *out = (ast_expression*)inner;
2653 else if (parser->tok == ':')
2657 if (!parser_next(parser)) {
2658 parseerror(parser, "expected label name");
2661 if (parser->tok != TOKEN_IDENT) {
2662 parseerror(parser, "label must be an identifier");
2665 label = ast_label_new(parser_ctx(parser), parser_tokval(parser));
2668 vec_push(parser->labels, label);
2669 *out = (ast_expression*)label;
2670 if (!parser_next(parser)) {
2671 parseerror(parser, "parse error after label");
2674 for (i = 0; i < vec_size(parser->gotos); ++i) {
2675 if (!strcmp(parser->gotos[i]->name, label->name)) {
2676 ast_goto_set_label(parser->gotos[i], label);
2677 vec_remove(parser->gotos, i, 1);
2683 else if (parser->tok == ';')
2685 if (!parser_next(parser)) {
2686 parseerror(parser, "parse error after empty statement");
2693 ast_expression *exp = parse_expression(parser, false);
2697 if (!ast_side_effects(exp)) {
2698 if (genwarning(ast_ctx(exp), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2705 static bool parse_block_into(parser_t *parser, ast_block *block)
2709 parser_enterblock(parser);
2711 if (!parser_next(parser)) { /* skip the '{' */
2712 parseerror(parser, "expected function body");
2716 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
2718 ast_expression *expr = NULL;
2719 if (parser->tok == '}')
2722 if (!parse_statement(parser, block, &expr, false)) {
2723 /* parseerror(parser, "parse error"); */
2729 if (!ast_block_add_expr(block, expr)) {
2736 if (parser->tok != '}') {
2739 (void)parser_next(parser);
2743 if (!parser_leaveblock(parser))
2745 return retval && !!block;
2748 static ast_block* parse_block(parser_t *parser)
2751 block = ast_block_new(parser_ctx(parser));
2754 if (!parse_block_into(parser, block)) {
2755 ast_block_delete(block);
2761 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
2763 if (parser->tok == '{') {
2764 *out = (ast_expression*)parse_block(parser);
2767 return parse_statement(parser, NULL, out, false);
2770 static bool create_vector_members(ast_value *var, ast_member **me)
2773 size_t len = strlen(var->name);
2775 for (i = 0; i < 3; ++i) {
2776 char *name = mem_a(len+3);
2777 memcpy(name, var->name, len);
2779 name[len+1] = 'x'+i;
2781 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
2790 do { ast_member_delete(me[--i]); } while(i);
2794 static bool parse_function_body(parser_t *parser, ast_value *var)
2796 ast_block *block = NULL;
2801 ast_expression *framenum = NULL;
2802 ast_expression *nextthink = NULL;
2803 /* None of the following have to be deleted */
2804 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
2805 ast_expression *gbl_time = NULL, *gbl_self = NULL;
2806 bool has_frame_think;
2810 has_frame_think = false;
2811 old = parser->function;
2813 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
2814 parseerror(parser, "gotos/labels leaking");
2818 if (var->expression.variadic) {
2819 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
2820 "variadic function with implementation will not be able to access additional parameters"))
2826 if (parser->tok == '[') {
2827 /* got a frame definition: [ framenum, nextthink ]
2828 * this translates to:
2829 * self.frame = framenum;
2830 * self.nextthink = time + 0.1;
2831 * self.think = nextthink;
2835 fld_think = parser_find_field(parser, "think");
2836 fld_nextthink = parser_find_field(parser, "nextthink");
2837 fld_frame = parser_find_field(parser, "frame");
2838 if (!fld_think || !fld_nextthink || !fld_frame) {
2839 parseerror(parser, "cannot use [frame,think] notation without the required fields");
2840 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
2843 gbl_time = parser_find_global(parser, "time");
2844 gbl_self = parser_find_global(parser, "self");
2845 if (!gbl_time || !gbl_self) {
2846 parseerror(parser, "cannot use [frame,think] notation without the required globals");
2847 parseerror(parser, "please declare the following globals: `time`, `self`");
2851 if (!parser_next(parser))
2854 framenum = parse_expression_leave(parser, true);
2856 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
2859 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
2860 ast_unref(framenum);
2861 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
2865 if (parser->tok != ',') {
2866 ast_unref(framenum);
2867 parseerror(parser, "expected comma after frame number in [frame,think] notation");
2868 parseerror(parser, "Got a %i\n", parser->tok);
2872 if (!parser_next(parser)) {
2873 ast_unref(framenum);
2877 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
2879 /* qc allows the use of not-yet-declared functions here
2880 * - this automatically creates a prototype */
2881 ast_value *thinkfunc;
2882 ast_expression *functype = fld_think->expression.next;
2884 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
2885 if (!thinkfunc || !ast_type_adopt(thinkfunc, functype)) {
2886 ast_unref(framenum);
2887 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
2891 if (!parser_next(parser)) {
2892 ast_unref(framenum);
2893 ast_delete(thinkfunc);
2897 vec_push(parser->globals, (ast_expression*)thinkfunc);
2898 util_htset(parser->htglobals, thinkfunc->name, thinkfunc);
2899 nextthink = (ast_expression*)thinkfunc;
2902 nextthink = parse_expression_leave(parser, true);
2904 ast_unref(framenum);
2905 parseerror(parser, "expected a think-function in [frame,think] notation");
2910 if (!ast_istype(nextthink, ast_value)) {
2911 parseerror(parser, "think-function in [frame,think] notation must be a constant");
2915 if (retval && parser->tok != ']') {
2916 parseerror(parser, "expected closing `]` for [frame,think] notation");
2920 if (retval && !parser_next(parser)) {
2924 if (retval && parser->tok != '{') {
2925 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
2930 ast_unref(nextthink);
2931 ast_unref(framenum);
2935 has_frame_think = true;
2938 block = ast_block_new(parser_ctx(parser));
2940 parseerror(parser, "failed to allocate block");
2941 if (has_frame_think) {
2942 ast_unref(nextthink);
2943 ast_unref(framenum);
2948 if (has_frame_think) {
2950 ast_expression *self_frame;
2951 ast_expression *self_nextthink;
2952 ast_expression *self_think;
2953 ast_expression *time_plus_1;
2954 ast_store *store_frame;
2955 ast_store *store_nextthink;
2956 ast_store *store_think;
2958 ctx = parser_ctx(parser);
2959 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
2960 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
2961 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
2963 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
2964 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
2966 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
2967 if (self_frame) ast_delete(self_frame);
2968 if (self_nextthink) ast_delete(self_nextthink);
2969 if (self_think) ast_delete(self_think);
2970 if (time_plus_1) ast_delete(time_plus_1);
2976 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
2977 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
2978 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
2981 ast_delete(self_frame);
2984 if (!store_nextthink) {
2985 ast_delete(self_nextthink);
2989 ast_delete(self_think);
2993 if (store_frame) ast_delete(store_frame);
2994 if (store_nextthink) ast_delete(store_nextthink);
2995 if (store_think) ast_delete(store_think);
2998 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
2999 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
3000 !ast_block_add_expr(block, (ast_expression*)store_think))
3007 parseerror(parser, "failed to generate code for [frame,think]");
3008 ast_unref(nextthink);
3009 ast_unref(framenum);
3015 parser_enterblock(parser);
3017 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
3019 ast_value *param = var->expression.params[parami];
3022 if (param->expression.vtype != TYPE_VECTOR &&
3023 (param->expression.vtype != TYPE_FIELD ||
3024 param->expression.next->expression.vtype != TYPE_VECTOR))
3029 if (!create_vector_members(param, me)) {
3030 ast_block_delete(block);
3034 for (e = 0; e < 3; ++e) {
3035 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
3036 ast_block_collect(block, (ast_expression*)me[e]);
3040 func = ast_function_new(ast_ctx(var), var->name, var);
3042 parseerror(parser, "failed to allocate function for `%s`", var->name);
3043 ast_block_delete(block);
3046 vec_push(parser->functions, func);
3048 parser->function = func;
3049 if (!parse_block_into(parser, block)) {
3050 ast_block_delete(block);
3054 vec_push(func->blocks, block);
3056 parser->function = old;
3057 if (!parser_leaveblock(parser))
3059 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
3060 parseerror(parser, "internal error: local scopes left");
3064 if (parser->tok == ';')
3065 return parser_next(parser);
3066 else if (opts.standard == COMPILER_QCC)
3067 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
3071 vec_pop(parser->functions);
3072 ast_function_delete(func);
3073 var->constval.vfunc = NULL;
3076 (void)!parser_leaveblock(parser);
3077 parser->function = old;
3081 static ast_expression *array_accessor_split(
3086 ast_expression *left,
3087 ast_expression *right
3093 lex_ctx ctx = ast_ctx(array);
3095 if (!left || !right) {
3096 if (left) ast_delete(left);
3097 if (right) ast_delete(right);
3101 cmp = ast_binary_new(ctx, INSTR_LT,
3102 (ast_expression*)index,
3103 (ast_expression*)parser_const_float(parser, middle));
3107 parseerror(parser, "internal error: failed to create comparison for array setter");
3111 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
3113 ast_delete(cmp); /* will delete left and right */
3114 parseerror(parser, "internal error: failed to create conditional jump for array setter");
3118 return (ast_expression*)ifthen;
3121 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
3123 lex_ctx ctx = ast_ctx(array);
3125 if (from+1 == afterend) {
3126 /* set this value */
3129 ast_array_index *subscript;
3131 int assignop = type_store_instr[value->expression.vtype];
3133 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3134 assignop = INSTR_STORE_V;
3136 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3140 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
3142 ast_delete(subscript);
3146 block = ast_block_new(ctx);
3152 if (!ast_block_add_expr(block, (ast_expression*)st)) {
3157 ret = ast_return_new(ctx, NULL);
3163 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
3168 return (ast_expression*)block;
3170 ast_expression *left, *right;
3171 size_t diff = afterend - from;
3172 size_t middle = from + diff/2;
3173 left = array_setter_node(parser, array, index, value, from, middle);
3174 right = array_setter_node(parser, array, index, value, middle, afterend);
3175 return array_accessor_split(parser, array, index, middle, left, right);
3179 static ast_expression *array_field_setter_node(
3188 lex_ctx ctx = ast_ctx(array);
3190 if (from+1 == afterend) {
3191 /* set this value */
3194 ast_entfield *entfield;
3195 ast_array_index *subscript;
3197 int assignop = type_storep_instr[value->expression.vtype];
3199 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3200 assignop = INSTR_STOREP_V;
3202 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3206 entfield = ast_entfield_new_force(ctx,
3207 (ast_expression*)entity,
3208 (ast_expression*)subscript,
3209 (ast_expression*)subscript);
3211 ast_delete(subscript);
3215 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
3217 ast_delete(entfield);
3221 block = ast_block_new(ctx);
3227 if (!ast_block_add_expr(block, (ast_expression*)st)) {
3232 ret = ast_return_new(ctx, NULL);
3238 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
3243 return (ast_expression*)block;
3245 ast_expression *left, *right;
3246 size_t diff = afterend - from;
3247 size_t middle = from + diff/2;
3248 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
3249 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
3250 return array_accessor_split(parser, array, index, middle, left, right);
3254 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
3256 lex_ctx ctx = ast_ctx(array);
3258 if (from+1 == afterend) {
3260 ast_array_index *subscript;
3262 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3266 ret = ast_return_new(ctx, (ast_expression*)subscript);
3268 ast_delete(subscript);
3272 return (ast_expression*)ret;
3274 ast_expression *left, *right;
3275 size_t diff = afterend - from;
3276 size_t middle = from + diff/2;
3277 left = array_getter_node(parser, array, index, from, middle);
3278 right = array_getter_node(parser, array, index, middle, afterend);
3279 return array_accessor_split(parser, array, index, middle, left, right);
3283 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
3285 ast_function *func = NULL;
3286 ast_value *fval = NULL;
3287 ast_block *body = NULL;
3289 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
3291 parseerror(parser, "failed to create accessor function value");
3295 func = ast_function_new(ast_ctx(array), funcname, fval);
3298 parseerror(parser, "failed to create accessor function node");
3302 body = ast_block_new(ast_ctx(array));
3304 parseerror(parser, "failed to create block for array accessor");
3310 vec_push(func->blocks, body);
3313 vec_push(parser->accessors, fval);
3318 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
3320 ast_expression *root = NULL;
3321 ast_value *index = NULL;
3322 ast_value *value = NULL;
3326 if (!ast_istype(array->expression.next, ast_value)) {
3327 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3331 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3333 func = fval->constval.vfunc;
3334 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
3336 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3337 value = ast_value_copy((ast_value*)array->expression.next);
3339 if (!index || !value) {
3340 parseerror(parser, "failed to create locals for array accessor");
3343 (void)!ast_value_set_name(value, "value"); /* not important */
3344 vec_push(fval->expression.params, index);
3345 vec_push(fval->expression.params, value);
3347 root = array_setter_node(parser, array, index, value, 0, array->expression.count);
3349 parseerror(parser, "failed to build accessor search tree");
3353 array->setter = fval;
3354 return ast_block_add_expr(func->blocks[0], root);
3356 if (index) ast_delete(index);
3357 if (value) ast_delete(value);
3358 if (root) ast_delete(root);
3364 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
3366 ast_expression *root = NULL;
3367 ast_value *entity = NULL;
3368 ast_value *index = NULL;
3369 ast_value *value = NULL;
3373 if (!ast_istype(array->expression.next, ast_value)) {
3374 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3378 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3380 func = fval->constval.vfunc;
3381 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
3383 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
3384 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3385 value = ast_value_copy((ast_value*)array->expression.next);
3386 if (!entity || !index || !value) {
3387 parseerror(parser, "failed to create locals for array accessor");
3390 (void)!ast_value_set_name(value, "value"); /* not important */
3391 vec_push(fval->expression.params, entity);
3392 vec_push(fval->expression.params, index);
3393 vec_push(fval->expression.params, value);
3395 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
3397 parseerror(parser, "failed to build accessor search tree");
3401 array->setter = fval;
3402 return ast_block_add_expr(func->blocks[0], root);
3404 if (entity) ast_delete(entity);
3405 if (index) ast_delete(index);
3406 if (value) ast_delete(value);
3407 if (root) ast_delete(root);
3413 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
3415 ast_expression *root = NULL;
3416 ast_value *index = NULL;
3420 /* NOTE: checking array->expression.next rather than elemtype since
3421 * for fields elemtype is a temporary fieldtype.
3423 if (!ast_istype(array->expression.next, ast_value)) {
3424 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3428 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3430 func = fval->constval.vfunc;
3431 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
3433 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3436 parseerror(parser, "failed to create locals for array accessor");
3439 vec_push(fval->expression.params, index);
3441 root = array_getter_node(parser, array, index, 0, array->expression.count);
3443 parseerror(parser, "failed to build accessor search tree");
3447 array->getter = fval;
3448 return ast_block_add_expr(func->blocks[0], root);
3450 if (index) ast_delete(index);
3451 if (root) ast_delete(root);
3457 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
3458 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
3466 bool variadic = false;
3468 ctx = parser_ctx(parser);
3470 /* for the sake of less code we parse-in in this function */
3471 if (!parser_next(parser)) {
3472 parseerror(parser, "expected parameter list");
3478 /* parse variables until we hit a closing paren */
3479 while (parser->tok != ')') {
3481 /* there must be commas between them */
3482 if (parser->tok != ',') {
3483 parseerror(parser, "expected comma or end of parameter list");
3486 if (!parser_next(parser)) {
3487 parseerror(parser, "expected parameter");
3493 if (parser->tok == TOKEN_DOTS) {
3494 /* '...' indicates a varargs function */
3496 if (!parser_next(parser)) {
3497 parseerror(parser, "expected parameter");
3500 if (parser->tok != ')') {
3501 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
3507 /* for anything else just parse a typename */
3508 param = parse_typename(parser, NULL, NULL);
3511 vec_push(params, param);
3512 if (param->expression.vtype >= TYPE_VARIANT) {
3513 char typename[1024];
3514 ast_type_to_string((ast_expression*)param, typename, sizeof(typename));
3515 parseerror(parser, "type not supported as part of a parameter list: %s", typename);
3521 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
3525 if (vec_size(params) > 8 && opts.standard == COMPILER_QCC)
3526 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
3529 if (!parser_next(parser)) {
3530 parseerror(parser, "parse error after typename");
3534 /* now turn 'var' into a function type */
3535 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
3536 fval->expression.next = (ast_expression*)var;
3537 fval->expression.variadic = variadic;
3540 var->expression.params = params;
3547 for (i = 0; i < vec_size(params); ++i)
3548 ast_delete(params[i]);
3553 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
3555 ast_expression *cexp;
3556 ast_value *cval, *tmp;
3559 ctx = parser_ctx(parser);
3561 if (!parser_next(parser)) {
3563 parseerror(parser, "expected array-size");
3567 cexp = parse_expression_leave(parser, true);
3569 if (!cexp || !ast_istype(cexp, ast_value)) {
3573 parseerror(parser, "expected array-size as constant positive integer");
3576 cval = (ast_value*)cexp;
3578 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
3579 tmp->expression.next = (ast_expression*)var;
3582 if (cval->expression.vtype == TYPE_INTEGER)
3583 tmp->expression.count = cval->constval.vint;
3584 else if (cval->expression.vtype == TYPE_FLOAT)
3585 tmp->expression.count = cval->constval.vfloat;
3589 parseerror(parser, "array-size must be a positive integer constant");
3594 if (parser->tok != ']') {
3596 parseerror(parser, "expected ']' after array-size");
3599 if (!parser_next(parser)) {
3601 parseerror(parser, "error after parsing array size");
3607 /* Parse a complete typename.
3608 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
3609 * but when parsing variables separated by comma
3610 * 'storebase' should point to where the base-type should be kept.
3611 * The base type makes up every bit of type information which comes *before* the
3614 * The following will be parsed in its entirety:
3616 * The 'basetype' in this case is 'void()'
3617 * and if there's a comma after it, say:
3619 * then the type-information 'void()' can be stored in 'storebase'
3621 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
3623 ast_value *var, *tmp;
3626 const char *name = NULL;
3627 bool isfield = false;
3628 bool wasarray = false;
3629 size_t morefields = 0;
3631 ctx = parser_ctx(parser);
3633 /* types may start with a dot */
3634 if (parser->tok == '.') {
3636 /* if we parsed a dot we need a typename now */
3637 if (!parser_next(parser)) {
3638 parseerror(parser, "expected typename for field definition");
3642 /* Further dots are handled seperately because they won't be part of the
3645 while (parser->tok == '.') {
3647 if (!parser_next(parser)) {
3648 parseerror(parser, "expected typename for field definition");
3653 if (parser->tok == TOKEN_IDENT)
3654 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
3655 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
3656 parseerror(parser, "expected typename");
3660 /* generate the basic type value */
3661 if (cached_typedef) {
3662 var = ast_value_copy(cached_typedef);
3663 ast_value_set_name(var, "<type(from_def)>");
3665 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
3667 for (; morefields; --morefields) {
3668 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
3669 tmp->expression.next = (ast_expression*)var;
3673 /* do not yet turn into a field - remember:
3674 * .void() foo; is a field too
3675 * .void()() foo; is a function
3679 if (!parser_next(parser)) {
3681 parseerror(parser, "parse error after typename");
3685 /* an opening paren now starts the parameter-list of a function
3686 * this is where original-QC has parameter lists.
3687 * We allow a single parameter list here.
3688 * Much like fteqcc we don't allow `float()() x`
3690 if (parser->tok == '(') {
3691 var = parse_parameter_list(parser, var);
3696 /* store the base if requested */
3698 *storebase = ast_value_copy(var);
3700 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3701 tmp->expression.next = (ast_expression*)*storebase;
3706 /* there may be a name now */
3707 if (parser->tok == TOKEN_IDENT) {
3708 name = util_strdup(parser_tokval(parser));
3710 if (!parser_next(parser)) {
3712 parseerror(parser, "error after variable or field declaration");
3717 /* now this may be an array */
3718 if (parser->tok == '[') {
3720 var = parse_arraysize(parser, var);
3725 /* This is the point where we can turn it into a field */
3727 /* turn it into a field if desired */
3728 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3729 tmp->expression.next = (ast_expression*)var;
3733 /* now there may be function parens again */
3734 if (parser->tok == '(' && opts.standard == COMPILER_QCC)
3735 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3736 if (parser->tok == '(' && wasarray)
3737 parseerror(parser, "arrays as part of a return type is not supported");
3738 while (parser->tok == '(') {
3739 var = parse_parameter_list(parser, var);
3748 /* finally name it */
3750 if (!ast_value_set_name(var, name)) {
3752 parseerror(parser, "internal error: failed to set name");
3755 /* free the name, ast_value_set_name duplicates */
3762 static bool parse_typedef(parser_t *parser)
3764 ast_value *typevar, *oldtype;
3765 ast_expression *old;
3767 typevar = parse_typename(parser, NULL, NULL);
3772 if ( (old = parser_find_var(parser, typevar->name)) ) {
3773 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
3774 " -> `%s` has been declared here: %s:%i",
3775 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
3776 ast_delete(typevar);
3780 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
3781 parseerror(parser, "type `%s` has already been declared here: %s:%i",
3782 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
3783 ast_delete(typevar);
3787 vec_push(parser->_typedefs, typevar);
3788 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
3790 if (parser->tok != ';') {
3791 parseerror(parser, "expected semicolon after typedef");
3794 if (!parser_next(parser)) {
3795 parseerror(parser, "parse error after typedef");
3802 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref)
3806 ast_expression *old;
3810 ast_value *basetype = NULL;
3812 bool isparam = false;
3813 bool isvector = false;
3814 bool cleanvar = true;
3815 bool wasarray = false;
3819 /* get the first complete variable */
3820 var = parse_typename(parser, &basetype, cached_typedef);
3823 ast_delete(basetype);
3831 /* Part 0: finish the type */
3832 if (parser->tok == '(') {
3833 if (opts.standard == COMPILER_QCC)
3834 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3835 var = parse_parameter_list(parser, var);
3841 /* we only allow 1-dimensional arrays */
3842 if (parser->tok == '[') {
3844 var = parse_arraysize(parser, var);
3850 if (parser->tok == '(' && wasarray) {
3851 parseerror(parser, "arrays as part of a return type is not supported");
3852 /* we'll still parse the type completely for now */
3854 /* for functions returning functions */
3855 while (parser->tok == '(') {
3856 if (opts.standard == COMPILER_QCC)
3857 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3858 var = parse_parameter_list(parser, var);
3865 var->cvq = qualifier;
3866 /* in a noref section we simply bump the usecount */
3867 if (noref || parser->noref)
3871 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
3872 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
3873 * is then filled with the previous definition and the parameter-names replaced.
3876 /* Deal with end_sys_ vars */
3878 if (!strcmp(var->name, "end_sys_globals")) {
3880 parser->crc_globals = vec_size(parser->globals);
3883 else if (!strcmp(var->name, "end_sys_fields")) {
3885 parser->crc_fields = vec_size(parser->fields);
3888 if (was_end && var->expression.vtype == TYPE_FIELD) {
3889 if (parsewarning(parser, WARN_END_SYS_FIELDS,
3890 "global '%s' hint should not be a field",
3891 parser_tokval(parser)))
3898 if (!nofields && var->expression.vtype == TYPE_FIELD)
3900 /* deal with field declarations */
3901 old = parser_find_field(parser, var->name);
3903 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
3904 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
3913 parseerror(parser, "field `%s` already declared here: %s:%i",
3914 var->name, ast_ctx(old).file, ast_ctx(old).line);
3919 if (opts.standard == COMPILER_QCC &&
3920 (old = parser_find_global(parser, var->name)))
3922 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
3923 parseerror(parser, "field `%s` already declared here: %s:%i",
3924 var->name, ast_ctx(old).file, ast_ctx(old).line);
3931 /* deal with other globals */
3932 old = parser_find_global(parser, var->name);
3933 if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
3935 /* This is a function which had a prototype */
3936 if (!ast_istype(old, ast_value)) {
3937 parseerror(parser, "internal error: prototype is not an ast_value");
3941 proto = (ast_value*)old;
3942 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
3943 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
3945 ast_ctx(proto).file, ast_ctx(proto).line);
3949 /* we need the new parameter-names */
3950 for (i = 0; i < vec_size(proto->expression.params); ++i)
3951 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
3959 if (opts.standard == COMPILER_GMQCC) {
3960 parseerror(parser, "global `%s` already declared here: %s:%i",
3961 var->name, ast_ctx(old).file, ast_ctx(old).line);
3965 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
3966 "global `%s` already declared here: %s:%i",
3967 var->name, ast_ctx(old).file, ast_ctx(old).line))
3972 proto = (ast_value*)old;
3973 if (!ast_istype(old, ast_value)) {
3974 parseerror(parser, "internal error: not an ast_value");
3983 if (opts.standard == COMPILER_QCC &&
3984 (old = parser_find_field(parser, var->name)))
3986 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
3987 parseerror(parser, "global `%s` already declared here: %s:%i",
3988 var->name, ast_ctx(old).file, ast_ctx(old).line);
3995 else /* it's not a global */
3997 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
3998 if (old && !isparam) {
3999 parseerror(parser, "local `%s` already declared here: %s:%i",
4000 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
4004 old = parser_find_local(parser, var->name, 0, &isparam);
4005 if (old && isparam) {
4006 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
4007 "local `%s` is shadowing a parameter", var->name))
4009 parseerror(parser, "local `%s` already declared here: %s:%i",
4010 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
4014 if (opts.standard != COMPILER_GMQCC) {
4023 * Create the global/local, and deal with vector types.
4026 if (var->expression.vtype == TYPE_VECTOR)
4028 else if (var->expression.vtype == TYPE_FIELD &&
4029 var->expression.next->expression.vtype == TYPE_VECTOR)
4033 if (!create_vector_members(var, me)) {
4040 /* deal with global variables, fields, functions */
4041 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
4042 var->isfield = true;
4043 vec_push(parser->fields, (ast_expression*)var);
4044 util_htset(parser->htfields, var->name, var);
4046 for (i = 0; i < 3; ++i) {
4047 vec_push(parser->fields, (ast_expression*)me[i]);
4048 util_htset(parser->htfields, me[i]->name, me[i]);
4053 vec_push(parser->globals, (ast_expression*)var);
4054 util_htset(parser->htglobals, var->name, var);
4056 for (i = 0; i < 3; ++i) {
4057 vec_push(parser->globals, (ast_expression*)me[i]);
4058 util_htset(parser->htglobals, me[i]->name, me[i]);
4063 vec_push(localblock->locals, var);
4064 parser_addlocal(parser, var->name, (ast_expression*)var);
4066 for (i = 0; i < 3; ++i) {
4067 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
4068 ast_block_collect(localblock, (ast_expression*)me[i]);
4074 me[0] = me[1] = me[2] = NULL;
4079 if (var->expression.vtype == TYPE_ARRAY) {
4081 snprintf(name, sizeof(name), "%s##SET", var->name);
4082 if (!parser_create_array_setter(parser, var, name))
4084 snprintf(name, sizeof(name), "%s##GET", var->name);
4085 if (!parser_create_array_getter(parser, var, var->expression.next, name))
4088 else if (!localblock && !nofields &&
4089 var->expression.vtype == TYPE_FIELD &&
4090 var->expression.next->expression.vtype == TYPE_ARRAY)
4093 ast_expression *telem;
4095 ast_value *array = (ast_value*)var->expression.next;
4097 if (!ast_istype(var->expression.next, ast_value)) {
4098 parseerror(parser, "internal error: field element type must be an ast_value");
4102 snprintf(name, sizeof(name), "%s##SETF", var->name);
4103 if (!parser_create_array_field_setter(parser, array, name))
4106 telem = ast_type_copy(ast_ctx(var), array->expression.next);
4107 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
4108 tfield->expression.next = telem;
4109 snprintf(name, sizeof(name), "%s##GETFP", var->name);
4110 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
4118 if (parser->tok == ';') {
4119 ast_delete(basetype);
4120 if (!parser_next(parser)) {
4121 parseerror(parser, "error after variable declaration");
4127 if (parser->tok == ',')
4131 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
4134 parseerror(parser, "missing comma or semicolon while parsing variables");
4138 if (localblock && opts.standard == COMPILER_QCC) {
4139 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
4140 "initializing expression turns variable `%s` into a constant in this standard",
4147 if (parser->tok != '{') {
4148 if (parser->tok != '=') {
4149 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
4153 if (!parser_next(parser)) {
4154 parseerror(parser, "error parsing initializer");
4158 else if (opts.standard == COMPILER_QCC) {
4159 parseerror(parser, "expected '=' before function body in this standard");
4162 if (parser->tok == '#') {
4163 ast_function *func = NULL;
4166 parseerror(parser, "cannot declare builtins within functions");
4169 if (var->expression.vtype != TYPE_FUNCTION) {
4170 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
4173 if (!parser_next(parser)) {
4174 parseerror(parser, "expected builtin number");
4177 if (parser->tok != TOKEN_INTCONST) {
4178 parseerror(parser, "builtin number must be an integer constant");
4181 if (parser_token(parser)->constval.i < 0) {
4182 parseerror(parser, "builtin number must be an integer greater than zero");
4186 if (var->hasvalue) {
4187 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
4188 "builtin `%s` has already been defined\n"
4189 " -> previous declaration here: %s:%i",
4190 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
4194 func = ast_function_new(ast_ctx(var), var->name, var);
4196 parseerror(parser, "failed to allocate function for `%s`", var->name);
4199 vec_push(parser->functions, func);
4201 func->builtin = -parser_token(parser)->constval.i-1;
4204 if (!parser_next(parser)) {
4205 parseerror(parser, "expected comma or semicolon");
4207 ast_function_delete(func);
4208 var->constval.vfunc = NULL;
4212 else if (parser->tok == '{' || parser->tok == '[')
4216 parseerror(parser, "cannot declare functions within functions");
4221 ast_ctx(proto) = parser_ctx(parser);
4223 if (!parse_function_body(parser, var))
4225 ast_delete(basetype);
4226 for (i = 0; i < vec_size(parser->gotos); ++i)
4227 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
4228 vec_free(parser->gotos);
4229 vec_free(parser->labels);
4232 ast_expression *cexp;
4235 cexp = parse_expression_leave(parser, true);
4240 cval = (ast_value*)cexp;
4241 if (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
4242 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
4245 if (opts.standard != COMPILER_GMQCC &&
4246 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
4247 qualifier != CV_VAR)
4249 var->cvq = CV_CONST;
4251 var->hasvalue = true;
4252 if (cval->expression.vtype == TYPE_STRING)
4253 var->constval.vstring = parser_strdup(cval->constval.vstring);
4254 else if (cval->expression.vtype == TYPE_FIELD)
4255 var->constval.vfield = cval;
4257 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
4262 shunt sy = { NULL, NULL };
4265 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
4266 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
4267 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
4268 if (!parser_sy_apply_operator(parser, &sy))
4271 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
4272 parseerror(parser, "internal error: leaked operands");
4273 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
4283 if (parser->tok == ',') {
4284 if (!parser_next(parser)) {
4285 parseerror(parser, "expected another variable");
4289 if (parser->tok != TOKEN_IDENT) {
4290 parseerror(parser, "expected another variable");
4293 var = ast_value_copy(basetype);
4295 ast_value_set_name(var, parser_tokval(parser));
4296 if (!parser_next(parser)) {
4297 parseerror(parser, "error parsing variable declaration");
4303 if (parser->tok != ';') {
4304 parseerror(parser, "missing semicolon after variables");
4308 if (!parser_next(parser)) {
4309 parseerror(parser, "parse error after variable declaration");
4313 ast_delete(basetype);
4317 if (cleanvar && var)
4319 ast_delete(basetype);
4323 ast_delete(basetype);
4324 if (cleanvar && var)
4326 if (me[0]) ast_member_delete(me[0]);
4327 if (me[1]) ast_member_delete(me[1]);
4328 if (me[2]) ast_member_delete(me[2]);
4332 static bool parser_global_statement(parser_t *parser)
4336 ast_value *istype = NULL;
4338 if (parser->tok == TOKEN_IDENT)
4339 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
4341 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
4343 return parse_variable(parser, NULL, false, CV_NONE, istype, false);
4345 else if (parse_var_qualifiers(parser, false, &cvq, &noref))
4347 if (cvq == CV_WRONG)
4349 return parse_variable(parser, NULL, true, cvq, NULL, noref);
4351 else if (parser->tok == TOKEN_KEYWORD)
4353 if (!strcmp(parser_tokval(parser), "typedef")) {
4354 if (!parser_next(parser)) {
4355 parseerror(parser, "expected type definition after 'typedef'");
4358 return parse_typedef(parser);
4360 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
4363 else if (parser->tok == '#')
4365 return parse_pragma(parser);
4367 else if (parser->tok == '$')
4369 if (!parser_next(parser)) {
4370 parseerror(parser, "parse error");
4376 parseerror(parser, "unexpected token: %s", parser->lex->tok.value);
4382 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
4384 return util_crc16(old, str, strlen(str));
4387 static void progdefs_crc_file(const char *str)
4389 /* write to progdefs.h here */
4393 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
4395 old = progdefs_crc_sum(old, str);
4396 progdefs_crc_file(str);
4400 static void generate_checksum(parser_t *parser)
4402 uint16_t crc = 0xFFFF;
4406 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
4407 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
4409 progdefs_crc_file("\tint\tpad;\n");
4410 progdefs_crc_file("\tint\tofs_return[3];\n");
4411 progdefs_crc_file("\tint\tofs_parm0[3];\n");
4412 progdefs_crc_file("\tint\tofs_parm1[3];\n");
4413 progdefs_crc_file("\tint\tofs_parm2[3];\n");
4414 progdefs_crc_file("\tint\tofs_parm3[3];\n");
4415 progdefs_crc_file("\tint\tofs_parm4[3];\n");
4416 progdefs_crc_file("\tint\tofs_parm5[3];\n");
4417 progdefs_crc_file("\tint\tofs_parm6[3];\n");
4418 progdefs_crc_file("\tint\tofs_parm7[3];\n");
4420 for (i = 0; i < parser->crc_globals; ++i) {
4421 if (!ast_istype(parser->globals[i], ast_value))
4423 value = (ast_value*)(parser->globals[i]);
4424 switch (value->expression.vtype) {
4425 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
4426 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
4427 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
4428 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
4430 crc = progdefs_crc_both(crc, "\tint\t");
4433 crc = progdefs_crc_both(crc, value->name);
4434 crc = progdefs_crc_both(crc, ";\n");
4436 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
4437 for (i = 0; i < parser->crc_fields; ++i) {
4438 if (!ast_istype(parser->fields[i], ast_value))
4440 value = (ast_value*)(parser->fields[i]);
4441 switch (value->expression.next->expression.vtype) {
4442 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
4443 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
4444 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
4445 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
4447 crc = progdefs_crc_both(crc, "\tint\t");
4450 crc = progdefs_crc_both(crc, value->name);
4451 crc = progdefs_crc_both(crc, ";\n");
4453 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
4458 static parser_t *parser;
4464 parser = (parser_t*)mem_a(sizeof(parser_t));
4468 memset(parser, 0, sizeof(*parser));
4470 for (i = 0; i < operator_count; ++i) {
4471 if (operators[i].id == opid1('=')) {
4472 parser->assign_op = operators+i;
4476 if (!parser->assign_op) {
4477 printf("internal error: initializing parser: failed to find assign operator\n");
4482 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
4483 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
4484 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
4485 vec_push(parser->_blocktypedefs, 0);
4489 bool parser_compile()
4491 /* initial lexer/parser state */
4492 parser->lex->flags.noops = true;
4494 if (parser_next(parser))
4496 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
4498 if (!parser_global_statement(parser)) {
4499 if (parser->tok == TOKEN_EOF)
4500 parseerror(parser, "unexpected eof");
4501 else if (!parser->errors)
4502 parseerror(parser, "there have been errors, bailing out");
4503 lex_close(parser->lex);
4509 parseerror(parser, "parse error");
4510 lex_close(parser->lex);
4515 lex_close(parser->lex);
4518 return !parser->errors;
4521 bool parser_compile_file(const char *filename)
4523 parser->lex = lex_open(filename);
4525 con_err("failed to open file \"%s\"\n", filename);
4528 return parser_compile();
4531 bool parser_compile_string_len(const char *name, const char *str, size_t len)
4533 parser->lex = lex_open_string(str, len, name);
4535 con_err("failed to create lexer for string \"%s\"\n", name);
4538 return parser_compile();
4541 bool parser_compile_string(const char *name, const char *str)
4543 parser->lex = lex_open_string(str, strlen(str), name);
4545 con_err("failed to create lexer for string \"%s\"\n", name);
4548 return parser_compile();
4551 void parser_cleanup()
4554 for (i = 0; i < vec_size(parser->accessors); ++i) {
4555 ast_delete(parser->accessors[i]->constval.vfunc);
4556 parser->accessors[i]->constval.vfunc = NULL;
4557 ast_delete(parser->accessors[i]);
4559 for (i = 0; i < vec_size(parser->functions); ++i) {
4560 ast_delete(parser->functions[i]);
4562 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
4563 ast_delete(parser->imm_vector[i]);
4565 for (i = 0; i < vec_size(parser->imm_string); ++i) {
4566 ast_delete(parser->imm_string[i]);
4568 for (i = 0; i < vec_size(parser->imm_float); ++i) {
4569 ast_delete(parser->imm_float[i]);
4571 for (i = 0; i < vec_size(parser->fields); ++i) {
4572 ast_delete(parser->fields[i]);
4574 for (i = 0; i < vec_size(parser->globals); ++i) {
4575 ast_delete(parser->globals[i]);
4577 vec_free(parser->accessors);
4578 vec_free(parser->functions);
4579 vec_free(parser->imm_vector);
4580 vec_free(parser->imm_string);
4581 vec_free(parser->imm_float);
4582 vec_free(parser->globals);
4583 vec_free(parser->fields);
4585 for (i = 0; i < vec_size(parser->variables); ++i)
4586 util_htdel(parser->variables[i]);
4587 vec_free(parser->variables);
4588 vec_free(parser->_blocklocals);
4589 vec_free(parser->_locals);
4591 for (i = 0; i < vec_size(parser->_typedefs); ++i)
4592 ast_delete(parser->_typedefs[i]);
4593 vec_free(parser->_typedefs);
4594 for (i = 0; i < vec_size(parser->typedefs); ++i)
4595 util_htdel(parser->typedefs[i]);
4596 vec_free(parser->typedefs);
4597 vec_free(parser->_blocktypedefs);
4599 vec_free(parser->_block_ctx);
4601 vec_free(parser->labels);
4602 vec_free(parser->gotos);
4607 bool parser_finish(const char *output)
4613 if (!parser->errors)
4615 ir = ir_builder_new("gmqcc_out");
4617 con_out("failed to allocate builder\n");
4621 for (i = 0; i < vec_size(parser->fields); ++i) {
4624 if (!ast_istype(parser->fields[i], ast_value))
4626 field = (ast_value*)parser->fields[i];
4627 hasvalue = field->hasvalue;
4628 field->hasvalue = false;
4629 if (!ast_global_codegen((ast_value*)field, ir, true)) {
4630 con_out("failed to generate field %s\n", field->name);
4631 ir_builder_delete(ir);
4636 ast_expression *subtype;
4637 field->hasvalue = true;
4638 subtype = field->expression.next;
4639 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
4640 if (subtype->expression.vtype == TYPE_FIELD)
4641 ifld->fieldtype = subtype->expression.next->expression.vtype;
4642 else if (subtype->expression.vtype == TYPE_FUNCTION)
4643 ifld->outtype = subtype->expression.next->expression.vtype;
4644 (void)!ir_value_set_field(field->ir_v, ifld);
4647 for (i = 0; i < vec_size(parser->globals); ++i) {
4649 if (!ast_istype(parser->globals[i], ast_value))
4651 asvalue = (ast_value*)(parser->globals[i]);
4652 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
4653 retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
4654 "unused global: `%s`", asvalue->name);
4656 if (!ast_global_codegen(asvalue, ir, false)) {
4657 con_out("failed to generate global %s\n", asvalue->name);
4658 ir_builder_delete(ir);
4662 for (i = 0; i < vec_size(parser->imm_float); ++i) {
4663 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
4664 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
4665 ir_builder_delete(ir);
4669 for (i = 0; i < vec_size(parser->imm_string); ++i) {
4670 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
4671 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
4672 ir_builder_delete(ir);
4676 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
4677 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
4678 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
4679 ir_builder_delete(ir);
4683 for (i = 0; i < vec_size(parser->globals); ++i) {
4685 if (!ast_istype(parser->globals[i], ast_value))
4687 asvalue = (ast_value*)(parser->globals[i]);
4688 if (!ast_generate_accessors(asvalue, ir)) {
4689 ir_builder_delete(ir);
4693 for (i = 0; i < vec_size(parser->fields); ++i) {
4695 asvalue = (ast_value*)(parser->fields[i]->expression.next);
4697 if (!ast_istype((ast_expression*)asvalue, ast_value))
4699 if (asvalue->expression.vtype != TYPE_ARRAY)
4701 if (!ast_generate_accessors(asvalue, ir)) {
4702 ir_builder_delete(ir);
4706 for (i = 0; i < vec_size(parser->functions); ++i) {
4707 if (!ast_function_codegen(parser->functions[i], ir)) {
4708 con_out("failed to generate function %s\n", parser->functions[i]->name);
4709 ir_builder_delete(ir);
4714 ir_builder_dump(ir, con_out);
4715 for (i = 0; i < vec_size(parser->functions); ++i) {
4716 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
4717 con_out("failed to finalize function %s\n", parser->functions[i]->name);
4718 ir_builder_delete(ir);
4725 ir_builder_dump(ir, con_out);
4727 generate_checksum(parser);
4729 if (!ir_builder_generate(ir, output)) {
4730 con_out("*** failed to generate output file\n");
4731 ir_builder_delete(ir);
4736 ir_builder_delete(ir);
4740 con_out("*** there were compile errors\n");