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7 * the Software without restriction, including without limitation the rights to
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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,
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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, bool noreturn);
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]))
842 out = (ast_expression*)parser_const_float(parser,
843 (generated_op == INSTR_OR ? (ConstF(0) || ConstF(1)) : (ConstF(0) && ConstF(1))));
847 if (OPTS_FLAG(PERL_LOGIC) && !ast_compare_type(exprs[0], exprs[1])) {
848 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
849 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
850 parseerror(parser, "invalid types for logical operation with -fperl-logic: %s and %s", ty1, ty2);
853 if (OPTS_FLAG(CORRECT_LOGIC)) {
854 /* non-floats need to be NOTed */
855 for (i = 0; i < 2; ++i) {
856 if (exprs[i]->expression.vtype != TYPE_FLOAT) {
857 if (type_not_instr[exprs[i]->expression.vtype] == AINSTR_END) {
858 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
859 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
860 parseerror(parser, "invalid types for logical operation with -fcorrect-logic: %s and %s", ty1, ty2);
863 out = (ast_expression*)ast_unary_new(ctx, type_not_instr[exprs[i]->expression.vtype], exprs[i]);
866 exprs[i] = out; out = NULL;
868 if (OPTS_FLAG(PERL_LOGIC))
872 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
877 if (vec_last(parser->pot) != POT_TERNARY2) {
878 parseerror(parser, "mismatched parenthesis/ternary");
881 vec_pop(parser->pot);
882 if (exprs[1]->expression.vtype != exprs[2]->expression.vtype) {
883 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
884 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
885 parseerror(parser, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
888 if (CanConstFold1(exprs[0]))
889 out = (ConstF(0) ? exprs[1] : exprs[2]);
891 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
895 generated_op += 1; /* INSTR_GT */
897 generated_op += 1; /* INSTR_LT */
898 case opid2('>', '='):
899 generated_op += 1; /* INSTR_GE */
900 case opid2('<', '='):
901 generated_op += INSTR_LE;
902 if (NotSameType(TYPE_FLOAT)) {
903 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
904 type_name[exprs[0]->expression.vtype],
905 type_name[exprs[1]->expression.vtype]);
908 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
910 case opid2('!', '='):
911 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
912 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
913 type_name[exprs[0]->expression.vtype],
914 type_name[exprs[1]->expression.vtype]);
917 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
919 case opid2('=', '='):
920 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
921 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
922 type_name[exprs[0]->expression.vtype],
923 type_name[exprs[1]->expression.vtype]);
926 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
930 if (ast_istype(exprs[0], ast_entfield)) {
931 ast_expression *field = ((ast_entfield*)exprs[0])->field;
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_storep_instr[TYPE_VECTOR];
939 assignop = type_storep_instr[exprs[0]->expression.vtype];
940 if (assignop == AINSTR_END ||
941 !ast_compare_type(field->expression.next, exprs[1]))
943 ast_type_to_string(field->expression.next, ty1, sizeof(ty1));
944 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
945 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
946 field->expression.next->expression.vtype == TYPE_FUNCTION &&
947 exprs[1]->expression.vtype == TYPE_FUNCTION)
949 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
950 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
956 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
961 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
962 exprs[0]->expression.vtype == TYPE_FIELD &&
963 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
965 assignop = type_store_instr[TYPE_VECTOR];
968 assignop = type_store_instr[exprs[0]->expression.vtype];
971 if (assignop == AINSTR_END) {
972 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
973 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
974 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
976 else if (!ast_compare_type(exprs[0], exprs[1])) {
977 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
978 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
979 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
980 exprs[0]->expression.vtype == TYPE_FUNCTION &&
981 exprs[1]->expression.vtype == TYPE_FUNCTION)
983 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
984 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
990 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
993 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
994 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
996 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
998 case opid3('+','+','P'):
999 case opid3('-','-','P'):
1001 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1002 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1003 parseerror(parser, "invalid type for prefix increment: %s", ty1);
1006 if (op->id == opid3('+','+','P'))
1007 addop = INSTR_ADD_F;
1009 addop = INSTR_SUB_F;
1010 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1011 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1013 if (ast_istype(exprs[0], ast_entfield)) {
1014 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1016 (ast_expression*)parser_const_float_1(parser));
1018 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1020 (ast_expression*)parser_const_float_1(parser));
1023 case opid3('S','+','+'):
1024 case opid3('S','-','-'):
1026 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1027 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1028 parseerror(parser, "invalid type for suffix increment: %s", ty1);
1031 if (op->id == opid3('S','+','+')) {
1032 addop = INSTR_ADD_F;
1033 subop = INSTR_SUB_F;
1035 addop = INSTR_SUB_F;
1036 subop = INSTR_ADD_F;
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 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1044 (ast_expression*)parser_const_float_1(parser));
1046 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1048 (ast_expression*)parser_const_float_1(parser));
1052 out = (ast_expression*)ast_binary_new(ctx, subop,
1054 (ast_expression*)parser_const_float_1(parser));
1056 case opid2('+','='):
1057 case opid2('-','='):
1058 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
1059 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
1061 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1062 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1063 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1067 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1068 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1070 if (ast_istype(exprs[0], ast_entfield))
1071 assignop = type_storep_instr[exprs[0]->expression.vtype];
1073 assignop = type_store_instr[exprs[0]->expression.vtype];
1074 switch (exprs[0]->expression.vtype) {
1076 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1077 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
1078 exprs[0], exprs[1]);
1081 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1082 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1083 exprs[0], exprs[1]);
1086 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1087 type_name[exprs[0]->expression.vtype],
1088 type_name[exprs[1]->expression.vtype]);
1092 case opid2('*','='):
1093 case opid2('/','='):
1094 if (exprs[1]->expression.vtype != TYPE_FLOAT ||
1095 !(exprs[0]->expression.vtype == TYPE_FLOAT ||
1096 exprs[0]->expression.vtype == TYPE_VECTOR))
1098 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1099 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1100 parseerror(parser, "invalid types used in expression: %s and %s",
1104 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1105 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1107 if (ast_istype(exprs[0], ast_entfield))
1108 assignop = type_storep_instr[exprs[0]->expression.vtype];
1110 assignop = type_store_instr[exprs[0]->expression.vtype];
1111 switch (exprs[0]->expression.vtype) {
1113 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1114 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1115 exprs[0], exprs[1]);
1118 if (op->id == opid2('*','=')) {
1119 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1120 exprs[0], exprs[1]);
1122 /* there's no DIV_VF */
1123 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
1124 (ast_expression*)parser_const_float_1(parser),
1128 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1133 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1134 type_name[exprs[0]->expression.vtype],
1135 type_name[exprs[1]->expression.vtype]);
1139 case opid2('&','='):
1140 case opid2('|','='):
1141 if (NotSameType(TYPE_FLOAT)) {
1142 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1143 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1144 parseerror(parser, "invalid types used in expression: %s and %s",
1148 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1149 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1151 if (ast_istype(exprs[0], ast_entfield))
1152 assignop = type_storep_instr[exprs[0]->expression.vtype];
1154 assignop = type_store_instr[exprs[0]->expression.vtype];
1155 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1156 (op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1157 exprs[0], exprs[1]);
1159 case opid3('&','~','='):
1160 /* This is like: a &= ~(b);
1161 * But QC has no bitwise-not, so we implement it as
1164 if (NotSameType(TYPE_FLOAT)) {
1165 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1166 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1167 parseerror(parser, "invalid types used in expression: %s and %s",
1171 if (ast_istype(exprs[0], ast_entfield))
1172 assignop = type_storep_instr[exprs[0]->expression.vtype];
1174 assignop = type_store_instr[exprs[0]->expression.vtype];
1175 out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1178 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1179 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1181 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1182 asbinstore->keep_dest = true;
1183 out = (ast_expression*)asbinstore;
1189 parseerror(parser, "failed to apply operand %s", op->op);
1193 DEBUGSHUNTDO(con_out("applied %s\n", op->op));
1194 vec_push(sy->out, syexp(ctx, out));
1198 static bool parser_close_call(parser_t *parser, shunt *sy)
1200 /* was a function call */
1201 ast_expression *fun;
1207 vec_shrinkby(sy->ops, 1);
1208 fid = sy->ops[vec_size(sy->ops)].off;
1210 /* out[fid] is the function
1211 * everything above is parameters...
1212 * 0 params = nothing
1213 * 1 params = ast_expression
1217 if (vec_size(sy->out) < 1 || vec_size(sy->out) <= fid) {
1218 parseerror(parser, "internal error: function call needs function and parameter list...");
1222 fun = sy->out[fid].out;
1224 if (fun == intrinsic_debug_typestring) {
1226 if (fid+2 != vec_size(sy->out) ||
1227 vec_last(sy->out).block)
1229 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1232 ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
1233 ast_unref(vec_last(sy->out).out);
1234 sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
1235 (ast_expression*)parser_const_string(parser, ty, false));
1236 vec_shrinkby(sy->out, 1);
1240 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1242 parseerror(parser, "internal error: failed to create ast_call node");
1246 if (fid+1 == vec_size(sy->out)) {
1249 } else if (fid+2 == vec_size(sy->out)) {
1251 vec_shrinkby(sy->out, 1);
1252 params = sy->out[vec_size(sy->out)].block;
1256 vec_push(call->params, sy->out[vec_size(sy->out)].out);
1258 paramcount = vec_size(params->exprs);
1259 call->params = params->exprs;
1260 params->exprs = NULL;
1263 if (!ast_call_check_types(call))
1266 parseerror(parser, "invalid function call");
1270 /* overwrite fid, the function, with a call */
1271 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1273 if (fun->expression.vtype != TYPE_FUNCTION) {
1274 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
1278 if (!fun->expression.next) {
1279 parseerror(parser, "could not determine function return type");
1282 if (vec_size(fun->expression.params) != paramcount &&
1283 !((fun->expression.flags & AST_FLAG_VARIADIC) &&
1284 vec_size(fun->expression.params) < paramcount))
1287 const char *fewmany = (vec_size(fun->expression.params) > paramcount) ? "few" : "many";
1289 fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1290 if (opts.standard == COMPILER_GMQCC)
1293 parseerror(parser, "too %s parameters for call to %s: expected %i, got %i\n"
1294 " -> `%s` has been declared here: %s:%i",
1295 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1296 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1298 parseerror(parser, "too %s parameters for function call: expected %i, got %i\n"
1299 " -> it has been declared here: %s:%i",
1300 fewmany, (int)vec_size(fun->expression.params), (int)paramcount,
1301 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1307 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1308 "too %s parameters for call to %s: expected %i, got %i\n"
1309 " -> `%s` has been declared here: %s:%i",
1310 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1311 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1313 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1314 "too %s parameters for function call: expected %i, got %i\n"
1315 " -> it has been declared here: %s:%i",
1316 fewmany, (int)vec_size(fun->expression.params), (int)paramcount,
1317 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1325 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
1327 if (!vec_size(sy->ops)) {
1328 parseerror(parser, "unmatched closing paren");
1331 /* this would for bit a + (x) because there are no operators inside (x)
1332 if (sy->ops[vec_size(sy->ops)-1].paren == 1) {
1333 parseerror(parser, "empty parenthesis expression");
1337 while (vec_size(sy->ops)) {
1338 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_FUNC) {
1339 if (!parser_close_call(parser, sy))
1343 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_EXPR) {
1344 vec_shrinkby(sy->ops, 1);
1345 return !functions_only;
1347 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_INDEX) {
1350 /* pop off the parenthesis */
1351 vec_shrinkby(sy->ops, 1);
1352 /* then apply the index operator */
1353 if (!parser_sy_apply_operator(parser, sy))
1357 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_TERNARY) {
1360 if (vec_last(parser->pot) != POT_TERNARY1) {
1361 parseerror(parser, "mismatched colon in ternary expression (missing closing paren?)");
1364 vec_last(parser->pot) = POT_TERNARY2;
1365 /* pop off the parenthesis */
1366 vec_shrinkby(sy->ops, 1);
1369 if (!parser_sy_apply_operator(parser, sy))
1375 static void parser_reclassify_token(parser_t *parser)
1378 for (i = 0; i < operator_count; ++i) {
1379 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1380 parser->tok = TOKEN_OPERATOR;
1386 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma)
1388 ast_expression *expr = NULL;
1390 bool wantop = false;
1391 bool gotmemberof = false;
1393 /* count the parens because an if starts with one, so the
1394 * end of a condition is an unmatched closing paren
1402 parser->lex->flags.noops = false;
1404 parser_reclassify_token(parser);
1409 gotmemberof = false;
1411 parser->memberof = 0;
1413 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1414 parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "_"))
1416 /* a translatable string */
1420 parseerror(parser, "expected operator or end of statement, got constant");
1424 parser->lex->flags.noops = true;
1425 if (!parser_next(parser) || parser->tok != '(') {
1426 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1429 parser->lex->flags.noops = false;
1430 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1431 parseerror(parser, "expected a constant string in translatable-string extension");
1434 val = parser_const_string(parser, parser_tokval(parser), true);
1438 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1439 DEBUGSHUNTDO(con_out("push string\n"));
1441 if (!parser_next(parser) || parser->tok != ')') {
1442 parseerror(parser, "expected closing paren after translatable string");
1446 else if (parser->tok == TOKEN_IDENT)
1448 ast_expression *var;
1450 parseerror(parser, "expected operator or end of statement");
1455 if (opts.standard == COMPILER_GMQCC)
1457 if (parser->memberof == TYPE_ENTITY) {
1458 /* still get vars first since there could be a fieldpointer */
1459 var = parser_find_var(parser, parser_tokval(parser));
1461 var = parser_find_field(parser, parser_tokval(parser));
1463 else if (parser->memberof == TYPE_VECTOR)
1465 parseerror(parser, "TODO: implement effective vector member access");
1468 else if (parser->memberof) {
1469 parseerror(parser, "namespace for member not found");
1473 var = parser_find_var(parser, parser_tokval(parser));
1475 var = parser_find_var(parser, parser_tokval(parser));
1477 var = parser_find_field(parser, parser_tokval(parser));
1481 if (!strcmp(parser_tokval(parser), "__builtin_debug_typestring")) {
1482 var = (ast_expression*)intrinsic_debug_typestring;
1487 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1493 if (ast_istype(var, ast_value)) {
1494 ((ast_value*)var)->uses++;
1496 else if (ast_istype(var, ast_member)) {
1497 ast_member *mem = (ast_member*)var;
1498 if (ast_istype(mem->owner, ast_value))
1499 ((ast_value*)(mem->owner))->uses++;
1502 vec_push(sy.out, syexp(parser_ctx(parser), var));
1503 DEBUGSHUNTDO(con_out("push %s\n", parser_tokval(parser)));
1505 else if (parser->tok == TOKEN_FLOATCONST) {
1508 parseerror(parser, "expected operator or end of statement, got constant");
1512 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1515 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1516 DEBUGSHUNTDO(con_out("push %g\n", parser_token(parser)->constval.f));
1518 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1521 parseerror(parser, "expected operator or end of statement, got constant");
1525 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1528 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1529 DEBUGSHUNTDO(con_out("push %i\n", parser_token(parser)->constval.i));
1531 else if (parser->tok == TOKEN_STRINGCONST) {
1534 parseerror(parser, "expected operator or end of statement, got constant");
1538 val = parser_const_string(parser, parser_tokval(parser), false);
1541 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1542 DEBUGSHUNTDO(con_out("push string\n"));
1544 else if (parser->tok == TOKEN_VECTORCONST) {
1547 parseerror(parser, "expected operator or end of statement, got constant");
1551 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1554 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1555 DEBUGSHUNTDO(con_out("push '%g %g %g'\n",
1556 parser_token(parser)->constval.v.x,
1557 parser_token(parser)->constval.v.y,
1558 parser_token(parser)->constval.v.z));
1560 else if (parser->tok == '(') {
1561 parseerror(parser, "internal error: '(' should be classified as operator");
1564 else if (parser->tok == '[') {
1565 parseerror(parser, "internal error: '[' should be classified as operator");
1568 else if (parser->tok == ')') {
1570 DEBUGSHUNTDO(con_out("do[op] )\n"));
1574 /* we do expect an operator next */
1575 /* closing an opening paren */
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);
1584 DEBUGSHUNTDO(con_out("do[nop] )\n"));
1588 /* allowed for function calls */
1589 if (!parser_close_paren(parser, &sy, true))
1591 if (vec_last(parser->pot) != POT_PAREN) {
1592 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1595 vec_pop(parser->pot);
1599 else if (parser->tok == ']') {
1601 parseerror(parser, "operand expected");
1605 if (!parser_close_paren(parser, &sy, false))
1607 if (vec_last(parser->pot) != POT_PAREN) {
1608 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1611 vec_pop(parser->pot);
1614 else if (parser->tok == TOKEN_TYPENAME) {
1615 parseerror(parser, "unexpected typename");
1618 else if (parser->tok != TOKEN_OPERATOR) {
1620 parseerror(parser, "expected operator or end of statement");
1627 /* classify the operator */
1628 const oper_info *op;
1629 const oper_info *olast = NULL;
1631 for (o = 0; o < operator_count; ++o) {
1632 if ((!(operators[o].flags & OP_PREFIX) == wantop) &&
1633 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1634 !strcmp(parser_tokval(parser), operators[o].op))
1639 if (o == operator_count) {
1640 /* no operator found... must be the end of the statement */
1643 /* found an operator */
1646 /* when declaring variables, a comma starts a new variable */
1647 if (op->id == opid1(',') && !parens && stopatcomma) {
1648 /* fixup the token */
1653 /* a colon without a pervious question mark cannot be a ternary */
1654 if (!ternaries && op->id == opid2(':','?')) {
1659 if (op->id == opid1(',')) {
1660 if (vec_size(parser->pot) && vec_last(parser->pot) == POT_TERNARY2) {
1661 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
1665 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1666 olast = &operators[vec_last(sy.ops).etype-1];
1669 (op->prec < olast->prec) ||
1670 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1672 if (!parser_sy_apply_operator(parser, &sy))
1674 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1675 olast = &operators[vec_last(sy.ops).etype-1];
1680 if (op->id == opid1('.') && opts.standard == COMPILER_GMQCC) {
1681 /* for gmqcc standard: open up the namespace of the previous type */
1682 ast_expression *prevex = vec_last(sy.out).out;
1684 parseerror(parser, "unexpected member operator");
1687 if (prevex->expression.vtype == TYPE_ENTITY)
1688 parser->memberof = TYPE_ENTITY;
1689 else if (prevex->expression.vtype == TYPE_VECTOR)
1690 parser->memberof = TYPE_VECTOR;
1692 parseerror(parser, "type error: type has no members");
1698 if (op->id == opid1('(')) {
1700 size_t sycount = vec_size(sy.out);
1701 DEBUGSHUNTDO(con_out("push [op] (\n"));
1702 ++parens; vec_push(parser->pot, POT_PAREN);
1703 /* we expected an operator, this is the function-call operator */
1704 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_FUNC, sycount-1));
1706 ++parens; vec_push(parser->pot, POT_PAREN);
1707 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_EXPR, 0));
1708 DEBUGSHUNTDO(con_out("push [nop] (\n"));
1711 } else if (op->id == opid1('[')) {
1713 parseerror(parser, "unexpected array subscript");
1716 ++parens; vec_push(parser->pot, POT_PAREN);
1717 /* push both the operator and the paren, this makes life easier */
1718 vec_push(sy.ops, syop(parser_ctx(parser), op));
1719 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_INDEX, 0));
1721 } else if (op->id == opid2('?',':')) {
1722 vec_push(sy.ops, syop(parser_ctx(parser), op));
1723 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_TERNARY, 0));
1726 vec_push(parser->pot, POT_TERNARY1);
1727 } else if (op->id == opid2(':','?')) {
1728 if (!vec_size(parser->pot)) {
1729 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1732 if (vec_last(parser->pot) != POT_TERNARY1) {
1733 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1736 if (!parser_close_paren(parser, &sy, false))
1738 vec_push(sy.ops, syop(parser_ctx(parser), op));
1742 DEBUGSHUNTDO(con_out("push operator %s\n", op->op));
1743 vec_push(sy.ops, syop(parser_ctx(parser), op));
1744 wantop = !!(op->flags & OP_SUFFIX);
1747 if (!parser_next(parser)) {
1750 if (parser->tok == ';' ||
1751 (!parens && parser->tok == ']'))
1757 while (vec_size(sy.ops)) {
1758 if (!parser_sy_apply_operator(parser, &sy))
1762 parser->lex->flags.noops = true;
1763 if (!vec_size(sy.out)) {
1764 parseerror(parser, "empty expression");
1767 expr = sy.out[0].out;
1770 DEBUGSHUNTDO(con_out("shunt done\n"));
1771 if (vec_size(parser->pot)) {
1772 parseerror(parser, "internal error: vec_size(parser->pot) = %lu", (unsigned long)vec_size(parser->pot));
1775 vec_free(parser->pot);
1779 parser->lex->flags.noops = true;
1785 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma)
1787 ast_expression *e = parse_expression_leave(parser, stopatcomma);
1790 if (!parser_next(parser)) {
1797 static void parser_enterblock(parser_t *parser)
1799 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
1800 vec_push(parser->_blocklocals, vec_size(parser->_locals));
1801 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
1802 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
1803 vec_push(parser->_block_ctx, parser_ctx(parser));
1806 static bool parser_leaveblock(parser_t *parser)
1809 size_t locals, typedefs;
1811 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
1812 parseerror(parser, "internal error: parser_leaveblock with no block");
1816 util_htdel(vec_last(parser->variables));
1817 vec_pop(parser->variables);
1818 if (!vec_size(parser->_blocklocals)) {
1819 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
1823 locals = vec_last(parser->_blocklocals);
1824 vec_pop(parser->_blocklocals);
1825 while (vec_size(parser->_locals) != locals) {
1826 ast_expression *e = vec_last(parser->_locals);
1827 ast_value *v = (ast_value*)e;
1828 vec_pop(parser->_locals);
1829 if (ast_istype(e, ast_value) && !v->uses) {
1830 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name)) {
1837 typedefs = vec_last(parser->_blocktypedefs);
1838 while (vec_size(parser->_typedefs) != typedefs) {
1839 ast_delete(vec_last(parser->_typedefs));
1840 vec_pop(parser->_typedefs);
1842 util_htdel(vec_last(parser->typedefs));
1843 vec_pop(parser->typedefs);
1845 vec_pop(parser->_block_ctx);
1849 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
1851 vec_push(parser->_locals, e);
1852 util_htset(vec_last(parser->variables), name, (void*)e);
1855 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
1858 ast_expression *cond, *ontrue, *onfalse = NULL;
1861 lex_ctx ctx = parser_ctx(parser);
1863 (void)block; /* not touching */
1865 /* skip the 'if', parse an optional 'not' and check for an opening paren */
1866 if (!parser_next(parser)) {
1867 parseerror(parser, "expected condition or 'not'");
1870 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
1872 if (!parser_next(parser)) {
1873 parseerror(parser, "expected condition in parenthesis");
1877 if (parser->tok != '(') {
1878 parseerror(parser, "expected 'if' condition in parenthesis");
1881 /* parse into the expression */
1882 if (!parser_next(parser)) {
1883 parseerror(parser, "expected 'if' condition after opening paren");
1886 /* parse the condition */
1887 cond = parse_expression_leave(parser, false);
1891 if (parser->tok != ')') {
1892 parseerror(parser, "expected closing paren after 'if' condition");
1896 /* parse into the 'then' branch */
1897 if (!parser_next(parser)) {
1898 parseerror(parser, "expected statement for on-true branch of 'if'");
1902 if (!parse_statement_or_block(parser, &ontrue)) {
1906 /* check for an else */
1907 if (!strcmp(parser_tokval(parser), "else")) {
1908 /* parse into the 'else' branch */
1909 if (!parser_next(parser)) {
1910 parseerror(parser, "expected on-false branch after 'else'");
1915 if (!parse_statement_or_block(parser, &onfalse)) {
1923 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
1925 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
1926 *out = (ast_expression*)ifthen;
1930 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
1933 ast_expression *cond, *ontrue;
1935 lex_ctx ctx = parser_ctx(parser);
1937 (void)block; /* not touching */
1939 /* skip the 'while' and check for opening paren */
1940 if (!parser_next(parser) || parser->tok != '(') {
1941 parseerror(parser, "expected 'while' condition in parenthesis");
1944 /* parse into the expression */
1945 if (!parser_next(parser)) {
1946 parseerror(parser, "expected 'while' condition after opening paren");
1949 /* parse the condition */
1950 cond = parse_expression_leave(parser, false);
1954 if (parser->tok != ')') {
1955 parseerror(parser, "expected closing paren after 'while' condition");
1959 /* parse into the 'then' branch */
1960 if (!parser_next(parser)) {
1961 parseerror(parser, "expected while-loop body");
1965 if (!parse_statement_or_block(parser, &ontrue)) {
1970 aloop = ast_loop_new(ctx, NULL, cond, NULL, NULL, ontrue);
1971 *out = (ast_expression*)aloop;
1975 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
1978 ast_expression *cond, *ontrue;
1980 lex_ctx ctx = parser_ctx(parser);
1982 (void)block; /* not touching */
1984 /* skip the 'do' and get the body */
1985 if (!parser_next(parser)) {
1986 parseerror(parser, "expected loop body");
1989 if (!parse_statement_or_block(parser, &ontrue))
1992 /* expect the "while" */
1993 if (parser->tok != TOKEN_KEYWORD ||
1994 strcmp(parser_tokval(parser), "while"))
1996 parseerror(parser, "expected 'while' and condition");
2001 /* skip the 'while' and check for opening paren */
2002 if (!parser_next(parser) || parser->tok != '(') {
2003 parseerror(parser, "expected 'while' condition in parenthesis");
2007 /* parse into the expression */
2008 if (!parser_next(parser)) {
2009 parseerror(parser, "expected 'while' condition after opening paren");
2013 /* parse the condition */
2014 cond = parse_expression_leave(parser, false);
2018 if (parser->tok != ')') {
2019 parseerror(parser, "expected closing paren after 'while' condition");
2025 if (!parser_next(parser) || parser->tok != ';') {
2026 parseerror(parser, "expected semicolon after condition");
2032 if (!parser_next(parser)) {
2033 parseerror(parser, "parse error");
2039 aloop = ast_loop_new(ctx, NULL, NULL, cond, NULL, ontrue);
2040 *out = (ast_expression*)aloop;
2044 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2047 ast_expression *initexpr, *cond, *increment, *ontrue;
2051 lex_ctx ctx = parser_ctx(parser);
2053 parser_enterblock(parser);
2060 /* skip the 'while' and check for opening paren */
2061 if (!parser_next(parser) || parser->tok != '(') {
2062 parseerror(parser, "expected 'for' expressions in parenthesis");
2065 /* parse into the expression */
2066 if (!parser_next(parser)) {
2067 parseerror(parser, "expected 'for' initializer after opening paren");
2072 if (parser->tok == TOKEN_IDENT)
2073 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2075 if (typevar || parser->tok == TOKEN_TYPENAME) {
2076 if (opts.standard != COMPILER_GMQCC) {
2077 if (parsewarning(parser, WARN_EXTENSIONS,
2078 "current standard does not allow variable declarations in for-loop initializers"))
2081 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false))
2084 else if (parser->tok != ';')
2086 initexpr = parse_expression_leave(parser, false);
2091 /* move on to condition */
2092 if (parser->tok != ';') {
2093 parseerror(parser, "expected semicolon after for-loop initializer");
2096 if (!parser_next(parser)) {
2097 parseerror(parser, "expected for-loop condition");
2101 /* parse the condition */
2102 if (parser->tok != ';') {
2103 cond = parse_expression_leave(parser, false);
2108 /* move on to incrementor */
2109 if (parser->tok != ';') {
2110 parseerror(parser, "expected semicolon after for-loop initializer");
2113 if (!parser_next(parser)) {
2114 parseerror(parser, "expected for-loop condition");
2118 /* parse the incrementor */
2119 if (parser->tok != ')') {
2120 increment = parse_expression_leave(parser, false);
2123 if (!ast_side_effects(increment)) {
2124 if (genwarning(ast_ctx(increment), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2130 if (parser->tok != ')') {
2131 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2134 /* parse into the 'then' branch */
2135 if (!parser_next(parser)) {
2136 parseerror(parser, "expected for-loop body");
2139 if (!parse_statement_or_block(parser, &ontrue))
2142 aloop = ast_loop_new(ctx, initexpr, cond, NULL, increment, ontrue);
2143 *out = (ast_expression*)aloop;
2145 if (!parser_leaveblock(parser))
2149 if (initexpr) ast_delete(initexpr);
2150 if (cond) ast_delete(cond);
2151 if (increment) ast_delete(increment);
2152 (void)!parser_leaveblock(parser);
2156 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2158 ast_expression *exp = NULL;
2159 ast_return *ret = NULL;
2160 ast_value *expected = parser->function->vtype;
2162 lex_ctx ctx = parser_ctx(parser);
2164 (void)block; /* not touching */
2166 if (!parser_next(parser)) {
2167 parseerror(parser, "expected return expression");
2171 if (parser->tok != ';') {
2172 exp = parse_expression(parser, false);
2176 if (exp->expression.vtype != expected->expression.next->expression.vtype) {
2177 parseerror(parser, "return with invalid expression");
2180 ret = ast_return_new(ctx, exp);
2186 if (!parser_next(parser))
2187 parseerror(parser, "parse error");
2188 if (expected->expression.next->expression.vtype != TYPE_VOID) {
2189 if (opts.standard != COMPILER_GMQCC)
2190 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2192 parseerror(parser, "return without value");
2194 ret = ast_return_new(ctx, NULL);
2196 *out = (ast_expression*)ret;
2200 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2202 lex_ctx ctx = parser_ctx(parser);
2204 (void)block; /* not touching */
2206 if (!parser_next(parser) || parser->tok != ';') {
2207 parseerror(parser, "expected semicolon");
2211 if (!parser_next(parser))
2212 parseerror(parser, "parse error");
2214 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue);
2218 /* returns true when it was a variable qualifier, false otherwise!
2219 * on error, cvq is set to CV_WRONG
2221 static bool parse_var_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *noreturn)
2223 bool had_const = false;
2224 bool had_var = false;
2225 bool had_noref = false;
2226 bool had_noreturn = false;
2229 if (!strcmp(parser_tokval(parser), "const"))
2231 else if (!strcmp(parser_tokval(parser), "var"))
2233 else if (with_local && !strcmp(parser_tokval(parser), "local"))
2235 else if (!strcmp(parser_tokval(parser), "noref"))
2237 else if (!strcmp(parser_tokval(parser), "noreturn"))
2238 had_noreturn = true;
2239 else if (!had_const && !had_var && !had_noref && !had_noreturn) {
2244 if (!parser_next(parser))
2254 *noreturn = had_noreturn;
2257 parseerror(parser, "parse error after variable qualifier");
2262 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
2264 ast_expression *operand;
2267 ast_switch *switchnode;
2268 ast_switch_case swcase;
2271 bool noref, noreturn;
2273 lex_ctx ctx = parser_ctx(parser);
2275 (void)block; /* not touching */
2278 /* parse over the opening paren */
2279 if (!parser_next(parser) || parser->tok != '(') {
2280 parseerror(parser, "expected switch operand in parenthesis");
2284 /* parse into the expression */
2285 if (!parser_next(parser)) {
2286 parseerror(parser, "expected switch operand");
2289 /* parse the operand */
2290 operand = parse_expression_leave(parser, false);
2294 switchnode = ast_switch_new(ctx, operand);
2297 if (parser->tok != ')') {
2298 ast_delete(switchnode);
2299 parseerror(parser, "expected closing paren after 'switch' operand");
2303 /* parse over the opening paren */
2304 if (!parser_next(parser) || parser->tok != '{') {
2305 ast_delete(switchnode);
2306 parseerror(parser, "expected list of cases");
2310 if (!parser_next(parser)) {
2311 ast_delete(switchnode);
2312 parseerror(parser, "expected 'case' or 'default'");
2316 /* new block; allow some variables to be declared here */
2317 parser_enterblock(parser);
2320 if (parser->tok == TOKEN_IDENT)
2321 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2322 if (typevar || parser->tok == TOKEN_TYPENAME) {
2323 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false)) {
2324 ast_delete(switchnode);
2329 if (parse_var_qualifiers(parser, true, &cvq, &noref, &noreturn))
2331 if (cvq == CV_WRONG) {
2332 ast_delete(switchnode);
2335 if (!parse_variable(parser, block, false, cvq, NULL, noref, noreturn)) {
2336 ast_delete(switchnode);
2345 while (parser->tok != '}') {
2346 ast_block *caseblock;
2348 if (parser->tok != TOKEN_KEYWORD) {
2349 ast_delete(switchnode);
2350 parseerror(parser, "expected 'case' or 'default'");
2353 if (!strcmp(parser_tokval(parser), "case")) {
2354 if (!parser_next(parser)) {
2355 ast_delete(switchnode);
2356 parseerror(parser, "expected expression for case");
2359 swcase.value = parse_expression_leave(parser, false);
2360 if (!swcase.value) {
2361 ast_delete(switchnode);
2362 parseerror(parser, "expected expression for case");
2365 if (!OPTS_FLAG(RELAXED_SWITCH)) {
2366 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
2367 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
2373 else if (!strcmp(parser_tokval(parser), "default")) {
2374 swcase.value = NULL;
2375 if (!parser_next(parser)) {
2376 ast_delete(switchnode);
2377 parseerror(parser, "expected colon");
2382 /* Now the colon and body */
2383 if (parser->tok != ':') {
2384 if (swcase.value) ast_unref(swcase.value);
2385 ast_delete(switchnode);
2386 parseerror(parser, "expected colon");
2390 if (!parser_next(parser)) {
2391 if (swcase.value) ast_unref(swcase.value);
2392 ast_delete(switchnode);
2393 parseerror(parser, "expected statements or case");
2396 caseblock = ast_block_new(parser_ctx(parser));
2398 if (swcase.value) ast_unref(swcase.value);
2399 ast_delete(switchnode);
2402 swcase.code = (ast_expression*)caseblock;
2403 vec_push(switchnode->cases, swcase);
2405 ast_expression *expr;
2406 if (parser->tok == '}')
2408 if (parser->tok == TOKEN_KEYWORD) {
2409 if (!strcmp(parser_tokval(parser), "case") ||
2410 !strcmp(parser_tokval(parser), "default"))
2415 if (!parse_statement(parser, caseblock, &expr, true)) {
2416 ast_delete(switchnode);
2421 if (!ast_block_add_expr(caseblock, expr)) {
2422 ast_delete(switchnode);
2428 parser_leaveblock(parser);
2431 if (parser->tok != '}') {
2432 ast_delete(switchnode);
2433 parseerror(parser, "expected closing paren of case list");
2436 if (!parser_next(parser)) {
2437 ast_delete(switchnode);
2438 parseerror(parser, "parse error after switch");
2441 *out = (ast_expression*)switchnode;
2445 static bool parse_goto(parser_t *parser, ast_expression **out)
2450 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2451 parseerror(parser, "expected label name after `goto`");
2455 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
2457 for (i = 0; i < vec_size(parser->labels); ++i) {
2458 if (!strcmp(parser->labels[i]->name, parser_tokval(parser))) {
2459 ast_goto_set_label(gt, parser->labels[i]);
2463 if (i == vec_size(parser->labels))
2464 vec_push(parser->gotos, gt);
2466 if (!parser_next(parser) || parser->tok != ';') {
2467 parseerror(parser, "semicolon expected after goto label");
2470 if (!parser_next(parser)) {
2471 parseerror(parser, "parse error after goto");
2475 *out = (ast_expression*)gt;
2479 static bool parse_skipwhite(parser_t *parser)
2482 if (!parser_next(parser))
2484 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
2485 return parser->tok < TOKEN_ERROR;
2488 static bool parse_eol(parser_t *parser)
2490 if (!parse_skipwhite(parser))
2492 return parser->tok == TOKEN_EOL;
2495 static bool parse_pragma_do(parser_t *parser)
2497 if (!parser_next(parser) ||
2498 parser->tok != TOKEN_IDENT ||
2499 strcmp(parser_tokval(parser), "pragma"))
2501 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
2504 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
2505 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
2509 if (!strcmp(parser_tokval(parser), "noref")) {
2510 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
2511 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
2514 parser->noref = !!parser_token(parser)->constval.i;
2515 if (!parse_eol(parser)) {
2516 parseerror(parser, "parse error after `noref` pragma");
2522 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
2529 static bool parse_pragma(parser_t *parser)
2532 parser->lex->flags.preprocessing = true;
2533 parser->lex->flags.mergelines = true;
2534 rv = parse_pragma_do(parser);
2535 if (parser->tok != TOKEN_EOL) {
2536 parseerror(parser, "junk after pragma");
2539 parser->lex->flags.preprocessing = false;
2540 parser->lex->flags.mergelines = false;
2541 if (!parser_next(parser)) {
2542 parseerror(parser, "parse error after pragma");
2548 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
2550 bool noref, noreturn;
2552 ast_value *typevar = NULL;
2556 if (parser->tok == TOKEN_IDENT)
2557 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2559 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
2561 /* local variable */
2563 parseerror(parser, "cannot declare a variable from here");
2566 if (opts.standard == COMPILER_QCC) {
2567 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
2570 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false))
2574 else if (parse_var_qualifiers(parser, !!block, &cvq, &noref, &noreturn))
2576 if (cvq == CV_WRONG)
2578 return parse_variable(parser, block, true, cvq, NULL, noref, noreturn);
2580 else if (parser->tok == TOKEN_KEYWORD)
2582 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
2587 if (!parser_next(parser)) {
2588 parseerror(parser, "parse error after __builtin_debug_printtype");
2592 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
2594 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
2595 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
2596 if (!parser_next(parser)) {
2597 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
2603 if (!parse_statement(parser, block, out, allow_cases))
2606 con_out("__builtin_debug_printtype: got no output node\n");
2609 ast_type_to_string(*out, ty, sizeof(ty));
2610 con_out("__builtin_debug_printtype: `%s`\n", ty);
2615 else if (!strcmp(parser_tokval(parser), "return"))
2617 return parse_return(parser, block, out);
2619 else if (!strcmp(parser_tokval(parser), "if"))
2621 return parse_if(parser, block, out);
2623 else if (!strcmp(parser_tokval(parser), "while"))
2625 return parse_while(parser, block, out);
2627 else if (!strcmp(parser_tokval(parser), "do"))
2629 return parse_dowhile(parser, block, out);
2631 else if (!strcmp(parser_tokval(parser), "for"))
2633 if (opts.standard == COMPILER_QCC) {
2634 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
2637 return parse_for(parser, block, out);
2639 else if (!strcmp(parser_tokval(parser), "break"))
2641 return parse_break_continue(parser, block, out, false);
2643 else if (!strcmp(parser_tokval(parser), "continue"))
2645 return parse_break_continue(parser, block, out, true);
2647 else if (!strcmp(parser_tokval(parser), "switch"))
2649 return parse_switch(parser, block, out);
2651 else if (!strcmp(parser_tokval(parser), "case") ||
2652 !strcmp(parser_tokval(parser), "default"))
2655 parseerror(parser, "unexpected 'case' label");
2660 else if (!strcmp(parser_tokval(parser), "goto"))
2662 return parse_goto(parser, out);
2664 else if (!strcmp(parser_tokval(parser), "typedef"))
2666 if (!parser_next(parser)) {
2667 parseerror(parser, "expected type definition after 'typedef'");
2670 return parse_typedef(parser);
2672 parseerror(parser, "Unexpected keyword");
2675 else if (parser->tok == '{')
2678 inner = parse_block(parser);
2681 *out = (ast_expression*)inner;
2684 else if (parser->tok == ':')
2688 if (!parser_next(parser)) {
2689 parseerror(parser, "expected label name");
2692 if (parser->tok != TOKEN_IDENT) {
2693 parseerror(parser, "label must be an identifier");
2696 label = ast_label_new(parser_ctx(parser), parser_tokval(parser));
2699 vec_push(parser->labels, label);
2700 *out = (ast_expression*)label;
2701 if (!parser_next(parser)) {
2702 parseerror(parser, "parse error after label");
2705 for (i = 0; i < vec_size(parser->gotos); ++i) {
2706 if (!strcmp(parser->gotos[i]->name, label->name)) {
2707 ast_goto_set_label(parser->gotos[i], label);
2708 vec_remove(parser->gotos, i, 1);
2714 else if (parser->tok == ';')
2716 if (!parser_next(parser)) {
2717 parseerror(parser, "parse error after empty statement");
2724 ast_expression *exp = parse_expression(parser, false);
2728 if (!ast_side_effects(exp)) {
2729 if (genwarning(ast_ctx(exp), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2736 static bool parse_block_into(parser_t *parser, ast_block *block)
2740 parser_enterblock(parser);
2742 if (!parser_next(parser)) { /* skip the '{' */
2743 parseerror(parser, "expected function body");
2747 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
2749 ast_expression *expr = NULL;
2750 if (parser->tok == '}')
2753 if (!parse_statement(parser, block, &expr, false)) {
2754 /* parseerror(parser, "parse error"); */
2760 if (!ast_block_add_expr(block, expr)) {
2767 if (parser->tok != '}') {
2770 (void)parser_next(parser);
2774 if (!parser_leaveblock(parser))
2776 return retval && !!block;
2779 static ast_block* parse_block(parser_t *parser)
2782 block = ast_block_new(parser_ctx(parser));
2785 if (!parse_block_into(parser, block)) {
2786 ast_block_delete(block);
2792 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
2794 if (parser->tok == '{') {
2795 *out = (ast_expression*)parse_block(parser);
2798 return parse_statement(parser, NULL, out, false);
2801 static bool create_vector_members(ast_value *var, ast_member **me)
2804 size_t len = strlen(var->name);
2806 for (i = 0; i < 3; ++i) {
2807 char *name = mem_a(len+3);
2808 memcpy(name, var->name, len);
2810 name[len+1] = 'x'+i;
2812 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
2821 do { ast_member_delete(me[--i]); } while(i);
2825 static bool parse_function_body(parser_t *parser, ast_value *var)
2827 ast_block *block = NULL;
2832 ast_expression *framenum = NULL;
2833 ast_expression *nextthink = NULL;
2834 /* None of the following have to be deleted */
2835 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
2836 ast_expression *gbl_time = NULL, *gbl_self = NULL;
2837 bool has_frame_think;
2841 has_frame_think = false;
2842 old = parser->function;
2844 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
2845 parseerror(parser, "gotos/labels leaking");
2849 if (var->expression.flags & AST_FLAG_VARIADIC) {
2850 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
2851 "variadic function with implementation will not be able to access additional parameters"))
2857 if (parser->tok == '[') {
2858 /* got a frame definition: [ framenum, nextthink ]
2859 * this translates to:
2860 * self.frame = framenum;
2861 * self.nextthink = time + 0.1;
2862 * self.think = nextthink;
2866 fld_think = parser_find_field(parser, "think");
2867 fld_nextthink = parser_find_field(parser, "nextthink");
2868 fld_frame = parser_find_field(parser, "frame");
2869 if (!fld_think || !fld_nextthink || !fld_frame) {
2870 parseerror(parser, "cannot use [frame,think] notation without the required fields");
2871 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
2874 gbl_time = parser_find_global(parser, "time");
2875 gbl_self = parser_find_global(parser, "self");
2876 if (!gbl_time || !gbl_self) {
2877 parseerror(parser, "cannot use [frame,think] notation without the required globals");
2878 parseerror(parser, "please declare the following globals: `time`, `self`");
2882 if (!parser_next(parser))
2885 framenum = parse_expression_leave(parser, true);
2887 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
2890 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
2891 ast_unref(framenum);
2892 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
2896 if (parser->tok != ',') {
2897 ast_unref(framenum);
2898 parseerror(parser, "expected comma after frame number in [frame,think] notation");
2899 parseerror(parser, "Got a %i\n", parser->tok);
2903 if (!parser_next(parser)) {
2904 ast_unref(framenum);
2908 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
2910 /* qc allows the use of not-yet-declared functions here
2911 * - this automatically creates a prototype */
2912 ast_value *thinkfunc;
2913 ast_expression *functype = fld_think->expression.next;
2915 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
2916 if (!thinkfunc || !ast_type_adopt(thinkfunc, functype)) {
2917 ast_unref(framenum);
2918 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
2922 if (!parser_next(parser)) {
2923 ast_unref(framenum);
2924 ast_delete(thinkfunc);
2928 vec_push(parser->globals, (ast_expression*)thinkfunc);
2929 util_htset(parser->htglobals, thinkfunc->name, thinkfunc);
2930 nextthink = (ast_expression*)thinkfunc;
2933 nextthink = parse_expression_leave(parser, true);
2935 ast_unref(framenum);
2936 parseerror(parser, "expected a think-function in [frame,think] notation");
2941 if (!ast_istype(nextthink, ast_value)) {
2942 parseerror(parser, "think-function in [frame,think] notation must be a constant");
2946 if (retval && parser->tok != ']') {
2947 parseerror(parser, "expected closing `]` for [frame,think] notation");
2951 if (retval && !parser_next(parser)) {
2955 if (retval && parser->tok != '{') {
2956 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
2961 ast_unref(nextthink);
2962 ast_unref(framenum);
2966 has_frame_think = true;
2969 block = ast_block_new(parser_ctx(parser));
2971 parseerror(parser, "failed to allocate block");
2972 if (has_frame_think) {
2973 ast_unref(nextthink);
2974 ast_unref(framenum);
2979 if (has_frame_think) {
2981 ast_expression *self_frame;
2982 ast_expression *self_nextthink;
2983 ast_expression *self_think;
2984 ast_expression *time_plus_1;
2985 ast_store *store_frame;
2986 ast_store *store_nextthink;
2987 ast_store *store_think;
2989 ctx = parser_ctx(parser);
2990 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
2991 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
2992 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
2994 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
2995 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
2997 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
2998 if (self_frame) ast_delete(self_frame);
2999 if (self_nextthink) ast_delete(self_nextthink);
3000 if (self_think) ast_delete(self_think);
3001 if (time_plus_1) ast_delete(time_plus_1);
3007 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
3008 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
3009 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
3012 ast_delete(self_frame);
3015 if (!store_nextthink) {
3016 ast_delete(self_nextthink);
3020 ast_delete(self_think);
3024 if (store_frame) ast_delete(store_frame);
3025 if (store_nextthink) ast_delete(store_nextthink);
3026 if (store_think) ast_delete(store_think);
3029 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
3030 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
3031 !ast_block_add_expr(block, (ast_expression*)store_think))
3038 parseerror(parser, "failed to generate code for [frame,think]");
3039 ast_unref(nextthink);
3040 ast_unref(framenum);
3046 parser_enterblock(parser);
3048 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
3050 ast_value *param = var->expression.params[parami];
3053 if (param->expression.vtype != TYPE_VECTOR &&
3054 (param->expression.vtype != TYPE_FIELD ||
3055 param->expression.next->expression.vtype != TYPE_VECTOR))
3060 if (!create_vector_members(param, me)) {
3061 ast_block_delete(block);
3065 for (e = 0; e < 3; ++e) {
3066 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
3067 ast_block_collect(block, (ast_expression*)me[e]);
3071 func = ast_function_new(ast_ctx(var), var->name, var);
3073 parseerror(parser, "failed to allocate function for `%s`", var->name);
3074 ast_block_delete(block);
3077 vec_push(parser->functions, func);
3079 parser->function = func;
3080 if (!parse_block_into(parser, block)) {
3081 ast_block_delete(block);
3085 vec_push(func->blocks, block);
3087 parser->function = old;
3088 if (!parser_leaveblock(parser))
3090 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
3091 parseerror(parser, "internal error: local scopes left");
3095 if (parser->tok == ';')
3096 return parser_next(parser);
3097 else if (opts.standard == COMPILER_QCC)
3098 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
3102 vec_pop(parser->functions);
3103 ast_function_delete(func);
3104 var->constval.vfunc = NULL;
3107 (void)!parser_leaveblock(parser);
3108 parser->function = old;
3112 static ast_expression *array_accessor_split(
3117 ast_expression *left,
3118 ast_expression *right
3124 lex_ctx ctx = ast_ctx(array);
3126 if (!left || !right) {
3127 if (left) ast_delete(left);
3128 if (right) ast_delete(right);
3132 cmp = ast_binary_new(ctx, INSTR_LT,
3133 (ast_expression*)index,
3134 (ast_expression*)parser_const_float(parser, middle));
3138 parseerror(parser, "internal error: failed to create comparison for array setter");
3142 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
3144 ast_delete(cmp); /* will delete left and right */
3145 parseerror(parser, "internal error: failed to create conditional jump for array setter");
3149 return (ast_expression*)ifthen;
3152 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
3154 lex_ctx ctx = ast_ctx(array);
3156 if (from+1 == afterend) {
3157 /* set this value */
3160 ast_array_index *subscript;
3162 int assignop = type_store_instr[value->expression.vtype];
3164 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3165 assignop = INSTR_STORE_V;
3167 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3171 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
3173 ast_delete(subscript);
3177 block = ast_block_new(ctx);
3183 if (!ast_block_add_expr(block, (ast_expression*)st)) {
3188 ret = ast_return_new(ctx, NULL);
3194 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
3199 return (ast_expression*)block;
3201 ast_expression *left, *right;
3202 size_t diff = afterend - from;
3203 size_t middle = from + diff/2;
3204 left = array_setter_node(parser, array, index, value, from, middle);
3205 right = array_setter_node(parser, array, index, value, middle, afterend);
3206 return array_accessor_split(parser, array, index, middle, left, right);
3210 static ast_expression *array_field_setter_node(
3219 lex_ctx ctx = ast_ctx(array);
3221 if (from+1 == afterend) {
3222 /* set this value */
3225 ast_entfield *entfield;
3226 ast_array_index *subscript;
3228 int assignop = type_storep_instr[value->expression.vtype];
3230 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3231 assignop = INSTR_STOREP_V;
3233 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3237 entfield = ast_entfield_new_force(ctx,
3238 (ast_expression*)entity,
3239 (ast_expression*)subscript,
3240 (ast_expression*)subscript);
3242 ast_delete(subscript);
3246 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
3248 ast_delete(entfield);
3252 block = ast_block_new(ctx);
3258 if (!ast_block_add_expr(block, (ast_expression*)st)) {
3263 ret = ast_return_new(ctx, NULL);
3269 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
3274 return (ast_expression*)block;
3276 ast_expression *left, *right;
3277 size_t diff = afterend - from;
3278 size_t middle = from + diff/2;
3279 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
3280 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
3281 return array_accessor_split(parser, array, index, middle, left, right);
3285 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
3287 lex_ctx ctx = ast_ctx(array);
3289 if (from+1 == afterend) {
3291 ast_array_index *subscript;
3293 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3297 ret = ast_return_new(ctx, (ast_expression*)subscript);
3299 ast_delete(subscript);
3303 return (ast_expression*)ret;
3305 ast_expression *left, *right;
3306 size_t diff = afterend - from;
3307 size_t middle = from + diff/2;
3308 left = array_getter_node(parser, array, index, from, middle);
3309 right = array_getter_node(parser, array, index, middle, afterend);
3310 return array_accessor_split(parser, array, index, middle, left, right);
3314 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
3316 ast_function *func = NULL;
3317 ast_value *fval = NULL;
3318 ast_block *body = NULL;
3320 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
3322 parseerror(parser, "failed to create accessor function value");
3326 func = ast_function_new(ast_ctx(array), funcname, fval);
3329 parseerror(parser, "failed to create accessor function node");
3333 body = ast_block_new(ast_ctx(array));
3335 parseerror(parser, "failed to create block for array accessor");
3341 vec_push(func->blocks, body);
3344 vec_push(parser->accessors, fval);
3349 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
3351 ast_expression *root = NULL;
3352 ast_value *index = NULL;
3353 ast_value *value = NULL;
3357 if (!ast_istype(array->expression.next, ast_value)) {
3358 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3362 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3364 func = fval->constval.vfunc;
3365 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
3367 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3368 value = ast_value_copy((ast_value*)array->expression.next);
3370 if (!index || !value) {
3371 parseerror(parser, "failed to create locals for array accessor");
3374 (void)!ast_value_set_name(value, "value"); /* not important */
3375 vec_push(fval->expression.params, index);
3376 vec_push(fval->expression.params, value);
3378 root = array_setter_node(parser, array, index, value, 0, array->expression.count);
3380 parseerror(parser, "failed to build accessor search tree");
3384 array->setter = fval;
3385 return ast_block_add_expr(func->blocks[0], root);
3387 if (index) ast_delete(index);
3388 if (value) ast_delete(value);
3389 if (root) ast_delete(root);
3395 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
3397 ast_expression *root = NULL;
3398 ast_value *entity = NULL;
3399 ast_value *index = NULL;
3400 ast_value *value = NULL;
3404 if (!ast_istype(array->expression.next, ast_value)) {
3405 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3409 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3411 func = fval->constval.vfunc;
3412 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
3414 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
3415 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3416 value = ast_value_copy((ast_value*)array->expression.next);
3417 if (!entity || !index || !value) {
3418 parseerror(parser, "failed to create locals for array accessor");
3421 (void)!ast_value_set_name(value, "value"); /* not important */
3422 vec_push(fval->expression.params, entity);
3423 vec_push(fval->expression.params, index);
3424 vec_push(fval->expression.params, value);
3426 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
3428 parseerror(parser, "failed to build accessor search tree");
3432 array->setter = fval;
3433 return ast_block_add_expr(func->blocks[0], root);
3435 if (entity) ast_delete(entity);
3436 if (index) ast_delete(index);
3437 if (value) ast_delete(value);
3438 if (root) ast_delete(root);
3444 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
3446 ast_expression *root = NULL;
3447 ast_value *index = NULL;
3451 /* NOTE: checking array->expression.next rather than elemtype since
3452 * for fields elemtype is a temporary fieldtype.
3454 if (!ast_istype(array->expression.next, ast_value)) {
3455 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3459 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3461 func = fval->constval.vfunc;
3462 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
3464 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3467 parseerror(parser, "failed to create locals for array accessor");
3470 vec_push(fval->expression.params, index);
3472 root = array_getter_node(parser, array, index, 0, array->expression.count);
3474 parseerror(parser, "failed to build accessor search tree");
3478 array->getter = fval;
3479 return ast_block_add_expr(func->blocks[0], root);
3481 if (index) ast_delete(index);
3482 if (root) ast_delete(root);
3488 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
3489 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
3497 bool variadic = false;
3499 ctx = parser_ctx(parser);
3501 /* for the sake of less code we parse-in in this function */
3502 if (!parser_next(parser)) {
3503 parseerror(parser, "expected parameter list");
3509 /* parse variables until we hit a closing paren */
3510 while (parser->tok != ')') {
3512 /* there must be commas between them */
3513 if (parser->tok != ',') {
3514 parseerror(parser, "expected comma or end of parameter list");
3517 if (!parser_next(parser)) {
3518 parseerror(parser, "expected parameter");
3524 if (parser->tok == TOKEN_DOTS) {
3525 /* '...' indicates a varargs function */
3527 if (!parser_next(parser)) {
3528 parseerror(parser, "expected parameter");
3531 if (parser->tok != ')') {
3532 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
3538 /* for anything else just parse a typename */
3539 param = parse_typename(parser, NULL, NULL);
3542 vec_push(params, param);
3543 if (param->expression.vtype >= TYPE_VARIANT) {
3544 char typename[1024];
3545 ast_type_to_string((ast_expression*)param, typename, sizeof(typename));
3546 parseerror(parser, "type not supported as part of a parameter list: %s", typename);
3552 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
3556 if (vec_size(params) > 8 && opts.standard == COMPILER_QCC)
3557 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
3560 if (!parser_next(parser)) {
3561 parseerror(parser, "parse error after typename");
3565 /* now turn 'var' into a function type */
3566 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
3567 fval->expression.next = (ast_expression*)var;
3569 fval->expression.flags |= AST_FLAG_VARIADIC;
3572 var->expression.params = params;
3579 for (i = 0; i < vec_size(params); ++i)
3580 ast_delete(params[i]);
3585 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
3587 ast_expression *cexp;
3588 ast_value *cval, *tmp;
3591 ctx = parser_ctx(parser);
3593 if (!parser_next(parser)) {
3595 parseerror(parser, "expected array-size");
3599 cexp = parse_expression_leave(parser, true);
3601 if (!cexp || !ast_istype(cexp, ast_value)) {
3605 parseerror(parser, "expected array-size as constant positive integer");
3608 cval = (ast_value*)cexp;
3610 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
3611 tmp->expression.next = (ast_expression*)var;
3614 if (cval->expression.vtype == TYPE_INTEGER)
3615 tmp->expression.count = cval->constval.vint;
3616 else if (cval->expression.vtype == TYPE_FLOAT)
3617 tmp->expression.count = cval->constval.vfloat;
3621 parseerror(parser, "array-size must be a positive integer constant");
3626 if (parser->tok != ']') {
3628 parseerror(parser, "expected ']' after array-size");
3631 if (!parser_next(parser)) {
3633 parseerror(parser, "error after parsing array size");
3639 /* Parse a complete typename.
3640 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
3641 * but when parsing variables separated by comma
3642 * 'storebase' should point to where the base-type should be kept.
3643 * The base type makes up every bit of type information which comes *before* the
3646 * The following will be parsed in its entirety:
3648 * The 'basetype' in this case is 'void()'
3649 * and if there's a comma after it, say:
3651 * then the type-information 'void()' can be stored in 'storebase'
3653 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
3655 ast_value *var, *tmp;
3658 const char *name = NULL;
3659 bool isfield = false;
3660 bool wasarray = false;
3661 size_t morefields = 0;
3663 ctx = parser_ctx(parser);
3665 /* types may start with a dot */
3666 if (parser->tok == '.') {
3668 /* if we parsed a dot we need a typename now */
3669 if (!parser_next(parser)) {
3670 parseerror(parser, "expected typename for field definition");
3674 /* Further dots are handled seperately because they won't be part of the
3677 while (parser->tok == '.') {
3679 if (!parser_next(parser)) {
3680 parseerror(parser, "expected typename for field definition");
3685 if (parser->tok == TOKEN_IDENT)
3686 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
3687 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
3688 parseerror(parser, "expected typename");
3692 /* generate the basic type value */
3693 if (cached_typedef) {
3694 var = ast_value_copy(cached_typedef);
3695 ast_value_set_name(var, "<type(from_def)>");
3697 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
3699 for (; morefields; --morefields) {
3700 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
3701 tmp->expression.next = (ast_expression*)var;
3705 /* do not yet turn into a field - remember:
3706 * .void() foo; is a field too
3707 * .void()() foo; is a function
3711 if (!parser_next(parser)) {
3713 parseerror(parser, "parse error after typename");
3717 /* an opening paren now starts the parameter-list of a function
3718 * this is where original-QC has parameter lists.
3719 * We allow a single parameter list here.
3720 * Much like fteqcc we don't allow `float()() x`
3722 if (parser->tok == '(') {
3723 var = parse_parameter_list(parser, var);
3728 /* store the base if requested */
3730 *storebase = ast_value_copy(var);
3732 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3733 tmp->expression.next = (ast_expression*)*storebase;
3738 /* there may be a name now */
3739 if (parser->tok == TOKEN_IDENT) {
3740 name = util_strdup(parser_tokval(parser));
3742 if (!parser_next(parser)) {
3744 parseerror(parser, "error after variable or field declaration");
3749 /* now this may be an array */
3750 if (parser->tok == '[') {
3752 var = parse_arraysize(parser, var);
3757 /* This is the point where we can turn it into a field */
3759 /* turn it into a field if desired */
3760 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3761 tmp->expression.next = (ast_expression*)var;
3765 /* now there may be function parens again */
3766 if (parser->tok == '(' && opts.standard == COMPILER_QCC)
3767 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3768 if (parser->tok == '(' && wasarray)
3769 parseerror(parser, "arrays as part of a return type is not supported");
3770 while (parser->tok == '(') {
3771 var = parse_parameter_list(parser, var);
3780 /* finally name it */
3782 if (!ast_value_set_name(var, name)) {
3784 parseerror(parser, "internal error: failed to set name");
3787 /* free the name, ast_value_set_name duplicates */
3794 static bool parse_typedef(parser_t *parser)
3796 ast_value *typevar, *oldtype;
3797 ast_expression *old;
3799 typevar = parse_typename(parser, NULL, NULL);
3804 if ( (old = parser_find_var(parser, typevar->name)) ) {
3805 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
3806 " -> `%s` has been declared here: %s:%i",
3807 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
3808 ast_delete(typevar);
3812 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
3813 parseerror(parser, "type `%s` has already been declared here: %s:%i",
3814 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
3815 ast_delete(typevar);
3819 vec_push(parser->_typedefs, typevar);
3820 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
3822 if (parser->tok != ';') {
3823 parseerror(parser, "expected semicolon after typedef");
3826 if (!parser_next(parser)) {
3827 parseerror(parser, "parse error after typedef");
3834 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref, bool noreturn)
3838 ast_expression *old;
3842 ast_value *basetype = NULL;
3844 bool isparam = false;
3845 bool isvector = false;
3846 bool cleanvar = true;
3847 bool wasarray = false;
3851 /* get the first complete variable */
3852 var = parse_typename(parser, &basetype, cached_typedef);
3855 ast_delete(basetype);
3863 /* Part 0: finish the type */
3864 if (parser->tok == '(') {
3865 if (opts.standard == COMPILER_QCC)
3866 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3867 var = parse_parameter_list(parser, var);
3873 /* we only allow 1-dimensional arrays */
3874 if (parser->tok == '[') {
3876 var = parse_arraysize(parser, var);
3882 if (parser->tok == '(' && wasarray) {
3883 parseerror(parser, "arrays as part of a return type is not supported");
3884 /* we'll still parse the type completely for now */
3886 /* for functions returning functions */
3887 while (parser->tok == '(') {
3888 if (opts.standard == COMPILER_QCC)
3889 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3890 var = parse_parameter_list(parser, var);
3897 var->cvq = qualifier;
3898 /* in a noref section we simply bump the usecount */
3899 if (noref || parser->noref)
3902 var->expression.flags |= AST_FLAG_NORETURN;
3905 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
3906 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
3907 * is then filled with the previous definition and the parameter-names replaced.
3910 /* Deal with end_sys_ vars */
3912 if (!strcmp(var->name, "end_sys_globals")) {
3914 parser->crc_globals = vec_size(parser->globals);
3917 else if (!strcmp(var->name, "end_sys_fields")) {
3919 parser->crc_fields = vec_size(parser->fields);
3922 if (was_end && var->expression.vtype == TYPE_FIELD) {
3923 if (parsewarning(parser, WARN_END_SYS_FIELDS,
3924 "global '%s' hint should not be a field",
3925 parser_tokval(parser)))
3932 if (!nofields && var->expression.vtype == TYPE_FIELD)
3934 /* deal with field declarations */
3935 old = parser_find_field(parser, var->name);
3937 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
3938 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
3947 parseerror(parser, "field `%s` already declared here: %s:%i",
3948 var->name, ast_ctx(old).file, ast_ctx(old).line);
3953 if (opts.standard == COMPILER_QCC &&
3954 (old = parser_find_global(parser, var->name)))
3956 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
3957 parseerror(parser, "field `%s` already declared here: %s:%i",
3958 var->name, ast_ctx(old).file, ast_ctx(old).line);
3965 /* deal with other globals */
3966 old = parser_find_global(parser, var->name);
3967 if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
3969 /* This is a function which had a prototype */
3970 if (!ast_istype(old, ast_value)) {
3971 parseerror(parser, "internal error: prototype is not an ast_value");
3975 proto = (ast_value*)old;
3976 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
3977 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
3979 ast_ctx(proto).file, ast_ctx(proto).line);
3983 /* we need the new parameter-names */
3984 for (i = 0; i < vec_size(proto->expression.params); ++i)
3985 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
3993 if (opts.standard == COMPILER_GMQCC) {
3994 parseerror(parser, "global `%s` already declared here: %s:%i",
3995 var->name, ast_ctx(old).file, ast_ctx(old).line);
3999 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
4000 "global `%s` already declared here: %s:%i",
4001 var->name, ast_ctx(old).file, ast_ctx(old).line))
4006 proto = (ast_value*)old;
4007 if (!ast_istype(old, ast_value)) {
4008 parseerror(parser, "internal error: not an ast_value");
4017 if (opts.standard == COMPILER_QCC &&
4018 (old = parser_find_field(parser, var->name)))
4020 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
4021 parseerror(parser, "global `%s` already declared here: %s:%i",
4022 var->name, ast_ctx(old).file, ast_ctx(old).line);
4029 else /* it's not a global */
4031 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
4032 if (old && !isparam) {
4033 parseerror(parser, "local `%s` already declared here: %s:%i",
4034 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
4038 old = parser_find_local(parser, var->name, 0, &isparam);
4039 if (old && isparam) {
4040 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
4041 "local `%s` is shadowing a parameter", var->name))
4043 parseerror(parser, "local `%s` already declared here: %s:%i",
4044 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
4048 if (opts.standard != COMPILER_GMQCC) {
4057 * Create the global/local, and deal with vector types.
4060 if (var->expression.vtype == TYPE_VECTOR)
4062 else if (var->expression.vtype == TYPE_FIELD &&
4063 var->expression.next->expression.vtype == TYPE_VECTOR)
4067 if (!create_vector_members(var, me)) {
4074 /* deal with global variables, fields, functions */
4075 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
4076 var->isfield = true;
4077 vec_push(parser->fields, (ast_expression*)var);
4078 util_htset(parser->htfields, var->name, var);
4080 for (i = 0; i < 3; ++i) {
4081 vec_push(parser->fields, (ast_expression*)me[i]);
4082 util_htset(parser->htfields, me[i]->name, me[i]);
4087 vec_push(parser->globals, (ast_expression*)var);
4088 util_htset(parser->htglobals, var->name, var);
4090 for (i = 0; i < 3; ++i) {
4091 vec_push(parser->globals, (ast_expression*)me[i]);
4092 util_htset(parser->htglobals, me[i]->name, me[i]);
4097 vec_push(localblock->locals, var);
4098 parser_addlocal(parser, var->name, (ast_expression*)var);
4100 for (i = 0; i < 3; ++i) {
4101 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
4102 ast_block_collect(localblock, (ast_expression*)me[i]);
4108 me[0] = me[1] = me[2] = NULL;
4113 if (var->expression.vtype == TYPE_ARRAY) {
4115 snprintf(name, sizeof(name), "%s##SET", var->name);
4116 if (!parser_create_array_setter(parser, var, name))
4118 snprintf(name, sizeof(name), "%s##GET", var->name);
4119 if (!parser_create_array_getter(parser, var, var->expression.next, name))
4122 else if (!localblock && !nofields &&
4123 var->expression.vtype == TYPE_FIELD &&
4124 var->expression.next->expression.vtype == TYPE_ARRAY)
4127 ast_expression *telem;
4129 ast_value *array = (ast_value*)var->expression.next;
4131 if (!ast_istype(var->expression.next, ast_value)) {
4132 parseerror(parser, "internal error: field element type must be an ast_value");
4136 snprintf(name, sizeof(name), "%s##SETF", var->name);
4137 if (!parser_create_array_field_setter(parser, array, name))
4140 telem = ast_type_copy(ast_ctx(var), array->expression.next);
4141 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
4142 tfield->expression.next = telem;
4143 snprintf(name, sizeof(name), "%s##GETFP", var->name);
4144 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
4152 if (parser->tok == ';') {
4153 ast_delete(basetype);
4154 if (!parser_next(parser)) {
4155 parseerror(parser, "error after variable declaration");
4161 if (parser->tok == ',')
4165 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
4168 parseerror(parser, "missing comma or semicolon while parsing variables");
4172 if (localblock && opts.standard == COMPILER_QCC) {
4173 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
4174 "initializing expression turns variable `%s` into a constant in this standard",
4181 if (parser->tok != '{') {
4182 if (parser->tok != '=') {
4183 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
4187 if (!parser_next(parser)) {
4188 parseerror(parser, "error parsing initializer");
4192 else if (opts.standard == COMPILER_QCC) {
4193 parseerror(parser, "expected '=' before function body in this standard");
4196 if (parser->tok == '#') {
4197 ast_function *func = NULL;
4200 parseerror(parser, "cannot declare builtins within functions");
4203 if (var->expression.vtype != TYPE_FUNCTION) {
4204 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
4207 if (!parser_next(parser)) {
4208 parseerror(parser, "expected builtin number");
4211 if (parser->tok != TOKEN_INTCONST) {
4212 parseerror(parser, "builtin number must be an integer constant");
4215 if (parser_token(parser)->constval.i < 0) {
4216 parseerror(parser, "builtin number must be an integer greater than zero");
4220 if (var->hasvalue) {
4221 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
4222 "builtin `%s` has already been defined\n"
4223 " -> previous declaration here: %s:%i",
4224 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
4228 func = ast_function_new(ast_ctx(var), var->name, var);
4230 parseerror(parser, "failed to allocate function for `%s`", var->name);
4233 vec_push(parser->functions, func);
4235 func->builtin = -parser_token(parser)->constval.i-1;
4238 if (!parser_next(parser)) {
4239 parseerror(parser, "expected comma or semicolon");
4241 ast_function_delete(func);
4242 var->constval.vfunc = NULL;
4246 else if (parser->tok == '{' || parser->tok == '[')
4250 parseerror(parser, "cannot declare functions within functions");
4255 ast_ctx(proto) = parser_ctx(parser);
4257 if (!parse_function_body(parser, var))
4259 ast_delete(basetype);
4260 for (i = 0; i < vec_size(parser->gotos); ++i)
4261 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
4262 vec_free(parser->gotos);
4263 vec_free(parser->labels);
4266 ast_expression *cexp;
4269 cexp = parse_expression_leave(parser, true);
4274 cval = (ast_value*)cexp;
4275 if (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
4276 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
4279 if (opts.standard != COMPILER_GMQCC &&
4280 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
4281 qualifier != CV_VAR)
4283 var->cvq = CV_CONST;
4285 var->hasvalue = true;
4286 if (cval->expression.vtype == TYPE_STRING)
4287 var->constval.vstring = parser_strdup(cval->constval.vstring);
4288 else if (cval->expression.vtype == TYPE_FIELD)
4289 var->constval.vfield = cval;
4291 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
4296 shunt sy = { NULL, NULL };
4299 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
4300 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
4301 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
4302 if (!parser_sy_apply_operator(parser, &sy))
4305 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
4306 parseerror(parser, "internal error: leaked operands");
4307 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
4317 if (parser->tok == ',') {
4318 if (!parser_next(parser)) {
4319 parseerror(parser, "expected another variable");
4323 if (parser->tok != TOKEN_IDENT) {
4324 parseerror(parser, "expected another variable");
4327 var = ast_value_copy(basetype);
4329 ast_value_set_name(var, parser_tokval(parser));
4330 if (!parser_next(parser)) {
4331 parseerror(parser, "error parsing variable declaration");
4337 if (parser->tok != ';') {
4338 parseerror(parser, "missing semicolon after variables");
4342 if (!parser_next(parser)) {
4343 parseerror(parser, "parse error after variable declaration");
4347 ast_delete(basetype);
4351 if (cleanvar && var)
4353 ast_delete(basetype);
4357 ast_delete(basetype);
4358 if (cleanvar && var)
4360 if (me[0]) ast_member_delete(me[0]);
4361 if (me[1]) ast_member_delete(me[1]);
4362 if (me[2]) ast_member_delete(me[2]);
4366 static bool parser_global_statement(parser_t *parser)
4370 bool noreturn = false;
4371 ast_value *istype = NULL;
4373 if (parser->tok == TOKEN_IDENT)
4374 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
4376 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
4378 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false);
4380 else if (parse_var_qualifiers(parser, false, &cvq, &noref, &noreturn))
4382 if (cvq == CV_WRONG)
4384 return parse_variable(parser, NULL, true, cvq, NULL, noref, noreturn);
4386 else if (parser->tok == TOKEN_KEYWORD)
4388 if (!strcmp(parser_tokval(parser), "typedef")) {
4389 if (!parser_next(parser)) {
4390 parseerror(parser, "expected type definition after 'typedef'");
4393 return parse_typedef(parser);
4395 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
4398 else if (parser->tok == '#')
4400 return parse_pragma(parser);
4402 else if (parser->tok == '$')
4404 if (!parser_next(parser)) {
4405 parseerror(parser, "parse error");
4411 parseerror(parser, "unexpected token: %s", parser->lex->tok.value);
4417 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
4419 return util_crc16(old, str, strlen(str));
4422 static void progdefs_crc_file(const char *str)
4424 /* write to progdefs.h here */
4428 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
4430 old = progdefs_crc_sum(old, str);
4431 progdefs_crc_file(str);
4435 static void generate_checksum(parser_t *parser)
4437 uint16_t crc = 0xFFFF;
4441 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
4442 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
4444 progdefs_crc_file("\tint\tpad;\n");
4445 progdefs_crc_file("\tint\tofs_return[3];\n");
4446 progdefs_crc_file("\tint\tofs_parm0[3];\n");
4447 progdefs_crc_file("\tint\tofs_parm1[3];\n");
4448 progdefs_crc_file("\tint\tofs_parm2[3];\n");
4449 progdefs_crc_file("\tint\tofs_parm3[3];\n");
4450 progdefs_crc_file("\tint\tofs_parm4[3];\n");
4451 progdefs_crc_file("\tint\tofs_parm5[3];\n");
4452 progdefs_crc_file("\tint\tofs_parm6[3];\n");
4453 progdefs_crc_file("\tint\tofs_parm7[3];\n");
4455 for (i = 0; i < parser->crc_globals; ++i) {
4456 if (!ast_istype(parser->globals[i], ast_value))
4458 value = (ast_value*)(parser->globals[i]);
4459 switch (value->expression.vtype) {
4460 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
4461 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
4462 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
4463 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
4465 crc = progdefs_crc_both(crc, "\tint\t");
4468 crc = progdefs_crc_both(crc, value->name);
4469 crc = progdefs_crc_both(crc, ";\n");
4471 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
4472 for (i = 0; i < parser->crc_fields; ++i) {
4473 if (!ast_istype(parser->fields[i], ast_value))
4475 value = (ast_value*)(parser->fields[i]);
4476 switch (value->expression.next->expression.vtype) {
4477 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
4478 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
4479 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
4480 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
4482 crc = progdefs_crc_both(crc, "\tint\t");
4485 crc = progdefs_crc_both(crc, value->name);
4486 crc = progdefs_crc_both(crc, ";\n");
4488 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
4493 static parser_t *parser;
4499 parser = (parser_t*)mem_a(sizeof(parser_t));
4503 memset(parser, 0, sizeof(*parser));
4505 for (i = 0; i < operator_count; ++i) {
4506 if (operators[i].id == opid1('=')) {
4507 parser->assign_op = operators+i;
4511 if (!parser->assign_op) {
4512 printf("internal error: initializing parser: failed to find assign operator\n");
4517 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
4518 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
4519 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
4520 vec_push(parser->_blocktypedefs, 0);
4524 bool parser_compile()
4526 /* initial lexer/parser state */
4527 parser->lex->flags.noops = true;
4529 if (parser_next(parser))
4531 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
4533 if (!parser_global_statement(parser)) {
4534 if (parser->tok == TOKEN_EOF)
4535 parseerror(parser, "unexpected eof");
4536 else if (!parser->errors)
4537 parseerror(parser, "there have been errors, bailing out");
4538 lex_close(parser->lex);
4544 parseerror(parser, "parse error");
4545 lex_close(parser->lex);
4550 lex_close(parser->lex);
4553 return !parser->errors;
4556 bool parser_compile_file(const char *filename)
4558 parser->lex = lex_open(filename);
4560 con_err("failed to open file \"%s\"\n", filename);
4563 return parser_compile();
4566 bool parser_compile_string_len(const char *name, const char *str, size_t len)
4568 parser->lex = lex_open_string(str, len, name);
4570 con_err("failed to create lexer for string \"%s\"\n", name);
4573 return parser_compile();
4576 bool parser_compile_string(const char *name, const char *str)
4578 parser->lex = lex_open_string(str, strlen(str), name);
4580 con_err("failed to create lexer for string \"%s\"\n", name);
4583 return parser_compile();
4586 void parser_cleanup()
4589 for (i = 0; i < vec_size(parser->accessors); ++i) {
4590 ast_delete(parser->accessors[i]->constval.vfunc);
4591 parser->accessors[i]->constval.vfunc = NULL;
4592 ast_delete(parser->accessors[i]);
4594 for (i = 0; i < vec_size(parser->functions); ++i) {
4595 ast_delete(parser->functions[i]);
4597 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
4598 ast_delete(parser->imm_vector[i]);
4600 for (i = 0; i < vec_size(parser->imm_string); ++i) {
4601 ast_delete(parser->imm_string[i]);
4603 for (i = 0; i < vec_size(parser->imm_float); ++i) {
4604 ast_delete(parser->imm_float[i]);
4606 for (i = 0; i < vec_size(parser->fields); ++i) {
4607 ast_delete(parser->fields[i]);
4609 for (i = 0; i < vec_size(parser->globals); ++i) {
4610 ast_delete(parser->globals[i]);
4612 vec_free(parser->accessors);
4613 vec_free(parser->functions);
4614 vec_free(parser->imm_vector);
4615 vec_free(parser->imm_string);
4616 vec_free(parser->imm_float);
4617 vec_free(parser->globals);
4618 vec_free(parser->fields);
4620 for (i = 0; i < vec_size(parser->variables); ++i)
4621 util_htdel(parser->variables[i]);
4622 vec_free(parser->variables);
4623 vec_free(parser->_blocklocals);
4624 vec_free(parser->_locals);
4626 for (i = 0; i < vec_size(parser->_typedefs); ++i)
4627 ast_delete(parser->_typedefs[i]);
4628 vec_free(parser->_typedefs);
4629 for (i = 0; i < vec_size(parser->typedefs); ++i)
4630 util_htdel(parser->typedefs[i]);
4631 vec_free(parser->typedefs);
4632 vec_free(parser->_blocktypedefs);
4634 vec_free(parser->_block_ctx);
4636 vec_free(parser->labels);
4637 vec_free(parser->gotos);
4642 bool parser_finish(const char *output)
4648 if (!parser->errors)
4650 ir = ir_builder_new("gmqcc_out");
4652 con_out("failed to allocate builder\n");
4656 for (i = 0; i < vec_size(parser->fields); ++i) {
4659 if (!ast_istype(parser->fields[i], ast_value))
4661 field = (ast_value*)parser->fields[i];
4662 hasvalue = field->hasvalue;
4663 field->hasvalue = false;
4664 if (!ast_global_codegen((ast_value*)field, ir, true)) {
4665 con_out("failed to generate field %s\n", field->name);
4666 ir_builder_delete(ir);
4671 ast_expression *subtype;
4672 field->hasvalue = true;
4673 subtype = field->expression.next;
4674 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
4675 if (subtype->expression.vtype == TYPE_FIELD)
4676 ifld->fieldtype = subtype->expression.next->expression.vtype;
4677 else if (subtype->expression.vtype == TYPE_FUNCTION)
4678 ifld->outtype = subtype->expression.next->expression.vtype;
4679 (void)!ir_value_set_field(field->ir_v, ifld);
4682 for (i = 0; i < vec_size(parser->globals); ++i) {
4684 if (!ast_istype(parser->globals[i], ast_value))
4686 asvalue = (ast_value*)(parser->globals[i]);
4687 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
4688 retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
4689 "unused global: `%s`", asvalue->name);
4691 if (!ast_global_codegen(asvalue, ir, false)) {
4692 con_out("failed to generate global %s\n", asvalue->name);
4693 ir_builder_delete(ir);
4697 for (i = 0; i < vec_size(parser->imm_float); ++i) {
4698 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
4699 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
4700 ir_builder_delete(ir);
4704 for (i = 0; i < vec_size(parser->imm_string); ++i) {
4705 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
4706 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
4707 ir_builder_delete(ir);
4711 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
4712 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
4713 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
4714 ir_builder_delete(ir);
4718 for (i = 0; i < vec_size(parser->globals); ++i) {
4720 if (!ast_istype(parser->globals[i], ast_value))
4722 asvalue = (ast_value*)(parser->globals[i]);
4723 if (!ast_generate_accessors(asvalue, ir)) {
4724 ir_builder_delete(ir);
4728 for (i = 0; i < vec_size(parser->fields); ++i) {
4730 asvalue = (ast_value*)(parser->fields[i]->expression.next);
4732 if (!ast_istype((ast_expression*)asvalue, ast_value))
4734 if (asvalue->expression.vtype != TYPE_ARRAY)
4736 if (!ast_generate_accessors(asvalue, ir)) {
4737 ir_builder_delete(ir);
4741 for (i = 0; i < vec_size(parser->functions); ++i) {
4742 if (!ast_function_codegen(parser->functions[i], ir)) {
4743 con_out("failed to generate function %s\n", parser->functions[i]->name);
4744 ir_builder_delete(ir);
4749 ir_builder_dump(ir, con_out);
4750 for (i = 0; i < vec_size(parser->functions); ++i) {
4751 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
4752 con_out("failed to finalize function %s\n", parser->functions[i]->name);
4753 ir_builder_delete(ir);
4760 ir_builder_dump(ir, con_out);
4762 generate_checksum(parser);
4764 if (!ir_builder_generate(ir, output)) {
4765 con_out("*** failed to generate output file\n");
4766 ir_builder_delete(ir);
4771 ir_builder_delete(ir);
4775 con_out("*** there were compile errors\n");