5 * Permission is hereby granted, free of charge, to any person obtaining a copy of
6 * this software and associated documentation files (the "Software"), to deal in
7 * the Software without restriction, including without limitation the rights to
8 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
9 * of the Software, and to permit persons to whom the Software is furnished to do
10 * so, subject to the following conditions:
12 * The above copyright notice and this permission notice shall be included in all
13 * copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
29 /* beginning of locals */
30 #define PARSER_HT_LOCALS 2
32 #define PARSER_HT_SIZE 1024
33 #define TYPEDEF_HT_SIZE 16
39 ast_expression **globals;
40 ast_expression **fields;
41 ast_function **functions;
42 ast_value **imm_float;
43 ast_value **imm_string;
44 ast_value **imm_vector;
47 /* must be deleted first, they reference immediates and values */
48 ast_value **accessors;
50 ast_value *imm_float_zero;
51 ast_value *imm_float_one;
52 ast_value *imm_vector_zero;
57 ast_function *function;
59 /* All the labels the function defined...
60 * Should they be in ast_function instead?
65 /* A list of hashtables for each scope */
71 /* not to be used directly, we use the hash table */
72 ast_expression **_locals;
74 ast_value **_typedefs;
75 size_t *_blocktypedefs;
80 /* we store the '=' operator info */
81 const oper_info *assign_op;
83 /* TYPE_FIELD -> parser_find_fields is used instead of find_var
84 * TODO: TYPE_VECTOR -> x, y and z are accepted in the gmqcc standard
85 * anything else: type error
89 /* Keep track of our ternary vs parenthesis nesting state.
90 * If we reach a 'comma' operator in a ternary without a paren,
91 * we shall trigger -Wternary-precedence.
93 enum { POT_PAREN, POT_TERNARY1, POT_TERNARY2 } *pot;
99 static const ast_expression *intrinsic_debug_typestring = (ast_expression*)0x10;
101 static void parser_enterblock(parser_t *parser);
102 static bool parser_leaveblock(parser_t *parser);
103 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e);
104 static bool parse_typedef(parser_t *parser);
105 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref, bool noreturn);
106 static ast_block* parse_block(parser_t *parser);
107 static bool parse_block_into(parser_t *parser, ast_block *block);
108 static bool parse_statement_or_block(parser_t *parser, ast_expression **out);
109 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases);
110 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma);
111 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma);
113 static void parseerror(parser_t *parser, const char *fmt, ...)
120 con_vprintmsg(LVL_ERROR, parser->lex->tok.ctx.file, parser->lex->tok.ctx.line, "parse error", fmt, ap);
124 /* returns true if it counts as an error */
125 static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
130 r = vcompile_warning(parser->lex->tok.ctx, warntype, fmt, ap);
135 static bool GMQCC_WARN genwarning(lex_ctx ctx, int warntype, const char *fmt, ...)
140 r = vcompile_warning(ctx, warntype, fmt, ap);
145 /**********************************************************************
146 * some maths used for constant folding
149 vector vec3_add(vector a, vector b)
158 vector vec3_sub(vector a, vector b)
167 qcfloat vec3_mulvv(vector a, vector b)
169 return (a.x * b.x + a.y * b.y + a.z * b.z);
172 vector vec3_mulvf(vector a, float b)
181 /**********************************************************************
185 bool parser_next(parser_t *parser)
187 /* lex_do kills the previous token */
188 parser->tok = lex_do(parser->lex);
189 if (parser->tok == TOKEN_EOF)
191 if (parser->tok >= TOKEN_ERROR) {
192 parseerror(parser, "lex error");
198 #define parser_tokval(p) ((p)->lex->tok.value)
199 #define parser_token(p) (&((p)->lex->tok))
200 #define parser_ctx(p) ((p)->lex->tok.ctx)
202 static ast_value* parser_const_float(parser_t *parser, double d)
206 for (i = 0; i < vec_size(parser->imm_float); ++i) {
207 const double compare = parser->imm_float[i]->constval.vfloat;
208 if (memcmp((const void*)&compare, (const void *)&d, sizeof(double)) == 0)
209 return parser->imm_float[i];
211 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_FLOAT);
213 out->hasvalue = true;
214 out->constval.vfloat = d;
215 vec_push(parser->imm_float, out);
219 static ast_value* parser_const_float_0(parser_t *parser)
221 if (!parser->imm_float_zero)
222 parser->imm_float_zero = parser_const_float(parser, 0);
223 return parser->imm_float_zero;
226 static ast_value* parser_const_float_1(parser_t *parser)
228 if (!parser->imm_float_one)
229 parser->imm_float_one = parser_const_float(parser, 1);
230 return parser->imm_float_one;
233 static char *parser_strdup(const char *str)
236 /* actually dup empty strings */
237 char *out = mem_a(1);
241 return util_strdup(str);
244 static ast_value* parser_const_string(parser_t *parser, const char *str, bool dotranslate)
248 for (i = 0; i < vec_size(parser->imm_string); ++i) {
249 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
250 return parser->imm_string[i];
254 snprintf(name, sizeof(name), "dotranslate_%lu", (unsigned long)(parser->translated++));
255 out = ast_value_new(parser_ctx(parser), name, TYPE_STRING);
257 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
259 out->hasvalue = true;
260 out->constval.vstring = parser_strdup(str);
261 vec_push(parser->imm_string, out);
265 static ast_value* parser_const_vector(parser_t *parser, vector v)
269 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
270 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
271 return parser->imm_vector[i];
273 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
275 out->hasvalue = true;
276 out->constval.vvec = v;
277 vec_push(parser->imm_vector, out);
281 static ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
287 return parser_const_vector(parser, v);
290 static ast_value* parser_const_vector_0(parser_t *parser)
292 if (!parser->imm_vector_zero)
293 parser->imm_vector_zero = parser_const_vector_f(parser, 0, 0, 0);
294 return parser->imm_vector_zero;
297 static ast_expression* parser_find_field(parser_t *parser, const char *name)
299 return util_htget(parser->htfields, name);
302 static ast_expression* parser_find_global(parser_t *parser, const char *name)
304 return util_htget(parser->htglobals, name);
307 static ast_expression* parser_find_param(parser_t *parser, const char *name)
311 if (!parser->function)
313 fun = parser->function->vtype;
314 for (i = 0; i < vec_size(fun->expression.params); ++i) {
315 if (!strcmp(fun->expression.params[i]->name, name))
316 return (ast_expression*)(fun->expression.params[i]);
321 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
326 hash = util_hthash(parser->htglobals, name);
329 for (i = vec_size(parser->variables); i > upto;) {
331 if ( (e = util_htgeth(parser->variables[i], name, hash)) )
335 return parser_find_param(parser, name);
338 static ast_expression* parser_find_var(parser_t *parser, const char *name)
342 v = parser_find_local(parser, name, 0, &dummy);
343 if (!v) v = parser_find_global(parser, name);
347 static ast_value* parser_find_typedef(parser_t *parser, const char *name, size_t upto)
351 hash = util_hthash(parser->typedefs[0], name);
353 for (i = vec_size(parser->typedefs); i > upto;) {
355 if ( (e = (ast_value*)util_htgeth(parser->typedefs[i], name, hash)) )
363 size_t etype; /* 0 = expression, others are operators */
367 ast_block *block; /* for commas and function calls */
376 #define SY_PAREN_EXPR '('
377 #define SY_PAREN_FUNC 'f'
378 #define SY_PAREN_INDEX '['
379 #define SY_PAREN_TERNARY '?'
381 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
392 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
396 e.out = (ast_expression*)v;
403 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
405 e.etype = 1 + (op - operators);
414 static sy_elem syparen(lex_ctx ctx, int p, size_t off) {
426 # define DEBUGSHUNTDO(x) x
428 # define DEBUGSHUNTDO(x)
431 /* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
432 * so we need to rotate it to become ent.(foo[n]).
434 static bool rotate_entfield_array_index_nodes(ast_expression **out)
436 ast_array_index *index;
437 ast_entfield *entfield;
441 ast_expression *entity;
443 lex_ctx ctx = ast_ctx(*out);
445 if (!ast_istype(*out, ast_array_index))
447 index = (ast_array_index*)*out;
449 if (!ast_istype(index->array, ast_entfield))
451 entfield = (ast_entfield*)index->array;
453 if (!ast_istype(entfield->field, ast_value))
455 field = (ast_value*)entfield->field;
458 entity = entfield->entity;
462 index = ast_array_index_new(ctx, (ast_expression*)field, sub);
463 entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
464 *out = (ast_expression*)entfield;
469 static bool immediate_is_true(lex_ctx ctx, ast_value *v)
471 switch (v->expression.vtype) {
473 return !!v->constval.vfloat;
475 return !!v->constval.vint;
477 if (OPTS_FLAG(CORRECT_LOGIC))
478 return v->constval.vvec.x &&
479 v->constval.vvec.y &&
482 return !!(v->constval.vvec.x);
484 if (!v->constval.vstring)
486 if (v->constval.vstring && OPTS_FLAG(TRUE_EMPTY_STRINGS))
488 return !!v->constval.vstring[0];
490 compile_error(ctx, "internal error: immediate_is_true on invalid type");
491 return !!v->constval.vfunc;
495 static bool parser_sy_apply_operator(parser_t *parser, shunt *sy)
499 ast_expression *out = NULL;
500 ast_expression *exprs[3];
501 ast_block *blocks[3];
502 ast_value *asvalue[3];
503 ast_binstore *asbinstore;
504 size_t i, assignop, addop, subop;
505 qcint generated_op = 0;
510 if (!vec_size(sy->ops)) {
511 parseerror(parser, "internal error: missing operator");
515 if (vec_last(sy->ops).paren) {
516 parseerror(parser, "unmatched parenthesis");
520 op = &operators[vec_last(sy->ops).etype - 1];
521 ctx = vec_last(sy->ops).ctx;
523 DEBUGSHUNTDO(con_out("apply %s\n", op->op));
525 if (vec_size(sy->out) < op->operands) {
526 parseerror(parser, "internal error: not enough operands: %i (operator %s (%i))", vec_size(sy->out),
527 op->op, (int)op->id);
531 vec_shrinkby(sy->ops, 1);
533 /* op(:?) has no input and no output */
537 vec_shrinkby(sy->out, op->operands);
538 for (i = 0; i < op->operands; ++i) {
539 exprs[i] = sy->out[vec_size(sy->out)+i].out;
540 blocks[i] = sy->out[vec_size(sy->out)+i].block;
541 asvalue[i] = (ast_value*)exprs[i];
544 if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
545 parseerror(parser, "internal error: operator cannot be applied on empty blocks");
549 #define NotSameType(T) \
550 (exprs[0]->expression.vtype != exprs[1]->expression.vtype || \
551 exprs[0]->expression.vtype != T)
552 #define CanConstFold1(A) \
553 (ast_istype((A), ast_value) && ((ast_value*)(A))->hasvalue && (((ast_value*)(A))->cvq == CV_CONST) &&\
554 (A)->expression.vtype != TYPE_FUNCTION)
555 #define CanConstFold(A, B) \
556 (CanConstFold1(A) && CanConstFold1(B))
557 #define ConstV(i) (asvalue[(i)]->constval.vvec)
558 #define ConstF(i) (asvalue[(i)]->constval.vfloat)
559 #define ConstS(i) (asvalue[(i)]->constval.vstring)
563 parseerror(parser, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
567 if (exprs[0]->expression.vtype == TYPE_ENTITY) {
568 if (exprs[1]->expression.vtype != TYPE_FIELD) {
569 parseerror(parser, "type error: right hand of member-operand should be an entity-field");
572 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
574 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
575 parseerror(parser, "internal error: vector access is not supposed to be handled at this point");
579 parseerror(parser, "type error: member-of operator on something that is not an entity or vector");
585 if (exprs[0]->expression.vtype != TYPE_ARRAY &&
586 !(exprs[0]->expression.vtype == TYPE_FIELD &&
587 exprs[0]->expression.next->expression.vtype == TYPE_ARRAY))
589 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
590 parseerror(parser, "cannot index value of type %s", ty1);
593 if (exprs[1]->expression.vtype != TYPE_FLOAT) {
594 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
595 parseerror(parser, "index must be of type float, not %s", ty1);
598 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
599 if (rotate_entfield_array_index_nodes(&out))
602 /* This is not broken in fteqcc anymore */
603 if (opts.standard != COMPILER_GMQCC) {
604 /* this error doesn't need to make us bail out */
605 (void)!parsewarning(parser, WARN_EXTENSIONS,
606 "accessing array-field members of an entity without parenthesis\n"
607 " -> this is an extension from -std=gmqcc");
615 if (!ast_block_add_expr(blocks[0], exprs[1]))
618 blocks[0] = ast_block_new(ctx);
619 if (!ast_block_add_expr(blocks[0], exprs[0]) ||
620 !ast_block_add_expr(blocks[0], exprs[1]))
625 if (!ast_block_set_type(blocks[0], exprs[1]))
628 vec_push(sy->out, syblock(ctx, blocks[0]));
635 switch (exprs[0]->expression.vtype) {
637 if (CanConstFold1(exprs[0]))
638 out = (ast_expression*)parser_const_float(parser, -ConstF(0));
640 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
641 (ast_expression*)parser_const_float_0(parser),
645 if (CanConstFold1(exprs[0]))
646 out = (ast_expression*)parser_const_vector_f(parser,
647 -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
649 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
650 (ast_expression*)parser_const_vector_0(parser),
654 parseerror(parser, "invalid types used in expression: cannot negate type %s",
655 type_name[exprs[0]->expression.vtype]);
661 switch (exprs[0]->expression.vtype) {
663 if (CanConstFold1(exprs[0]))
664 out = (ast_expression*)parser_const_float(parser, !ConstF(0));
666 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
669 if (CanConstFold1(exprs[0]))
670 out = (ast_expression*)parser_const_float(parser,
671 (!ConstV(0).x && !ConstV(0).y && !ConstV(0).z));
673 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
676 if (CanConstFold1(exprs[0])) {
677 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
678 out = (ast_expression*)parser_const_float(parser, !ConstS(0));
680 out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
682 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
683 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
685 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
688 /* we don't constant-fold NOT for these types */
690 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
693 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
696 parseerror(parser, "invalid types used in expression: cannot logically negate type %s",
697 type_name[exprs[0]->expression.vtype]);
703 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
704 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
706 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
707 type_name[exprs[0]->expression.vtype],
708 type_name[exprs[1]->expression.vtype]);
711 switch (exprs[0]->expression.vtype) {
713 if (CanConstFold(exprs[0], exprs[1]))
715 out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
718 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
721 if (CanConstFold(exprs[0], exprs[1]))
722 out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
724 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
727 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
728 type_name[exprs[0]->expression.vtype],
729 type_name[exprs[1]->expression.vtype]);
734 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
735 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
737 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
738 type_name[exprs[1]->expression.vtype],
739 type_name[exprs[0]->expression.vtype]);
742 switch (exprs[0]->expression.vtype) {
744 if (CanConstFold(exprs[0], exprs[1]))
745 out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
747 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
750 if (CanConstFold(exprs[0], exprs[1]))
751 out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
753 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
756 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
757 type_name[exprs[1]->expression.vtype],
758 type_name[exprs[0]->expression.vtype]);
763 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
764 exprs[0]->expression.vtype != TYPE_VECTOR &&
765 exprs[0]->expression.vtype != TYPE_FLOAT &&
766 exprs[1]->expression.vtype != TYPE_VECTOR &&
767 exprs[1]->expression.vtype != TYPE_FLOAT)
769 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
770 type_name[exprs[1]->expression.vtype],
771 type_name[exprs[0]->expression.vtype]);
774 switch (exprs[0]->expression.vtype) {
776 if (exprs[1]->expression.vtype == TYPE_VECTOR)
778 if (CanConstFold(exprs[0], exprs[1]))
779 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
781 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
785 if (CanConstFold(exprs[0], exprs[1]))
786 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
788 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
792 if (exprs[1]->expression.vtype == TYPE_FLOAT)
794 if (CanConstFold(exprs[0], exprs[1]))
795 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
797 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
801 if (CanConstFold(exprs[0], exprs[1]))
802 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
804 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
808 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
809 type_name[exprs[1]->expression.vtype],
810 type_name[exprs[0]->expression.vtype]);
815 if (NotSameType(TYPE_FLOAT)) {
816 parseerror(parser, "invalid types used in expression: cannot divide types %s and %s",
817 type_name[exprs[0]->expression.vtype],
818 type_name[exprs[1]->expression.vtype]);
821 if (CanConstFold(exprs[0], exprs[1]))
822 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
824 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
828 parseerror(parser, "qc does not have a modulo operator");
832 if (NotSameType(TYPE_FLOAT)) {
833 parseerror(parser, "invalid types used in expression: cannot perform bit operations between types %s and %s",
834 type_name[exprs[0]->expression.vtype],
835 type_name[exprs[1]->expression.vtype]);
838 if (CanConstFold(exprs[0], exprs[1]))
839 out = (ast_expression*)parser_const_float(parser,
840 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
841 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
843 out = (ast_expression*)ast_binary_new(ctx,
844 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
848 parseerror(parser, "TODO: bitxor");
853 case opid3('<','<','='):
854 case opid3('>','>','='):
855 parseerror(parser, "TODO: shifts");
859 generated_op += 1; /* INSTR_OR */
861 generated_op += INSTR_AND;
863 if (NotSameType(TYPE_FLOAT)) {
864 parseerror(parser, "invalid types used in expression: cannot perform logical operations between types %s and %s",
865 type_name[exprs[0]->expression.vtype],
866 type_name[exprs[1]->expression.vtype]);
867 parseerror(parser, "TODO: logical ops for arbitrary types using INSTR_NOT");
868 parseerror(parser, "TODO: optional early out");
872 if (CanConstFold(exprs[0], exprs[1]))
874 if (OPTS_FLAG(PERL_LOGIC)) {
875 if (immediate_is_true(ctx, asvalue[0]))
879 out = (ast_expression*)parser_const_float(parser,
880 ( (generated_op == INSTR_OR)
881 ? (immediate_is_true(ctx, asvalue[0]) || immediate_is_true(ctx, asvalue[1]))
882 : (immediate_is_true(ctx, asvalue[0]) && immediate_is_true(ctx, asvalue[1])) )
887 if (OPTS_FLAG(PERL_LOGIC) && !ast_compare_type(exprs[0], exprs[1])) {
888 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
889 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
890 parseerror(parser, "invalid types for logical operation with -fperl-logic: %s and %s", ty1, ty2);
893 if (OPTS_FLAG(CORRECT_LOGIC)) {
894 /* non-floats need to be NOTed */
895 for (i = 0; i < 2; ++i) {
896 if (exprs[i]->expression.vtype == TYPE_VECTOR) {
897 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[i]);
899 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
901 exprs[i] = out; out = NULL;
902 if (OPTS_FLAG(PERL_LOGIC)) {
903 /* here we want to keep the right expressions' type */
909 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
914 if (vec_last(parser->pot) != POT_TERNARY2) {
915 parseerror(parser, "mismatched parenthesis/ternary");
918 vec_pop(parser->pot);
919 if (exprs[1]->expression.vtype != exprs[2]->expression.vtype) {
920 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
921 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
922 parseerror(parser, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
925 if (CanConstFold1(exprs[0]))
926 out = (ConstF(0) ? exprs[1] : exprs[2]);
928 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
932 generated_op += 1; /* INSTR_GT */
934 generated_op += 1; /* INSTR_LT */
935 case opid2('>', '='):
936 generated_op += 1; /* INSTR_GE */
937 case opid2('<', '='):
938 generated_op += INSTR_LE;
939 if (NotSameType(TYPE_FLOAT)) {
940 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
941 type_name[exprs[0]->expression.vtype],
942 type_name[exprs[1]->expression.vtype]);
945 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
947 case opid2('!', '='):
948 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
949 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
950 type_name[exprs[0]->expression.vtype],
951 type_name[exprs[1]->expression.vtype]);
954 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
956 case opid2('=', '='):
957 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
958 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
959 type_name[exprs[0]->expression.vtype],
960 type_name[exprs[1]->expression.vtype]);
963 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
967 if (ast_istype(exprs[0], ast_entfield)) {
968 ast_expression *field = ((ast_entfield*)exprs[0])->field;
969 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
970 exprs[0]->expression.vtype == TYPE_FIELD &&
971 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
973 assignop = type_storep_instr[TYPE_VECTOR];
976 assignop = type_storep_instr[exprs[0]->expression.vtype];
977 if (assignop == AINSTR_END ||
978 !ast_compare_type(field->expression.next, exprs[1]))
980 ast_type_to_string(field->expression.next, ty1, sizeof(ty1));
981 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
982 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
983 field->expression.next->expression.vtype == TYPE_FUNCTION &&
984 exprs[1]->expression.vtype == TYPE_FUNCTION)
986 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
987 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
993 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
998 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
999 exprs[0]->expression.vtype == TYPE_FIELD &&
1000 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
1002 assignop = type_store_instr[TYPE_VECTOR];
1005 assignop = type_store_instr[exprs[0]->expression.vtype];
1008 if (assignop == AINSTR_END) {
1009 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1010 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1011 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1013 else if (!ast_compare_type(exprs[0], exprs[1])) {
1014 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1015 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1016 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1017 exprs[0]->expression.vtype == TYPE_FUNCTION &&
1018 exprs[1]->expression.vtype == TYPE_FUNCTION)
1020 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
1021 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
1027 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1030 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1031 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1033 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
1035 case opid3('+','+','P'):
1036 case opid3('-','-','P'):
1038 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1039 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1040 parseerror(parser, "invalid type for prefix increment: %s", ty1);
1043 if (op->id == opid3('+','+','P'))
1044 addop = INSTR_ADD_F;
1046 addop = INSTR_SUB_F;
1047 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1048 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1050 if (ast_istype(exprs[0], ast_entfield)) {
1051 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1053 (ast_expression*)parser_const_float_1(parser));
1055 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1057 (ast_expression*)parser_const_float_1(parser));
1060 case opid3('S','+','+'):
1061 case opid3('S','-','-'):
1063 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1064 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1065 parseerror(parser, "invalid type for suffix increment: %s", ty1);
1068 if (op->id == opid3('S','+','+')) {
1069 addop = INSTR_ADD_F;
1070 subop = INSTR_SUB_F;
1072 addop = INSTR_SUB_F;
1073 subop = INSTR_ADD_F;
1075 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1076 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1078 if (ast_istype(exprs[0], ast_entfield)) {
1079 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1081 (ast_expression*)parser_const_float_1(parser));
1083 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1085 (ast_expression*)parser_const_float_1(parser));
1089 out = (ast_expression*)ast_binary_new(ctx, subop,
1091 (ast_expression*)parser_const_float_1(parser));
1093 case opid2('+','='):
1094 case opid2('-','='):
1095 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
1096 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
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: cannot add or subtract type %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_ADD_F : INSTR_SUB_F),
1115 exprs[0], exprs[1]);
1118 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1119 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1120 exprs[0], exprs[1]);
1123 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1124 type_name[exprs[0]->expression.vtype],
1125 type_name[exprs[1]->expression.vtype]);
1129 case opid2('*','='):
1130 case opid2('/','='):
1131 if (exprs[1]->expression.vtype != TYPE_FLOAT ||
1132 !(exprs[0]->expression.vtype == TYPE_FLOAT ||
1133 exprs[0]->expression.vtype == TYPE_VECTOR))
1135 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1136 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1137 parseerror(parser, "invalid types used in expression: %s and %s",
1141 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1142 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1144 if (ast_istype(exprs[0], ast_entfield))
1145 assignop = type_storep_instr[exprs[0]->expression.vtype];
1147 assignop = type_store_instr[exprs[0]->expression.vtype];
1148 switch (exprs[0]->expression.vtype) {
1150 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1151 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1152 exprs[0], exprs[1]);
1155 if (op->id == opid2('*','=')) {
1156 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1157 exprs[0], exprs[1]);
1159 /* there's no DIV_VF */
1160 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
1161 (ast_expression*)parser_const_float_1(parser),
1165 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1170 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1171 type_name[exprs[0]->expression.vtype],
1172 type_name[exprs[1]->expression.vtype]);
1176 case opid2('&','='):
1177 case opid2('|','='):
1178 if (NotSameType(TYPE_FLOAT)) {
1179 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1180 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1181 parseerror(parser, "invalid types used in expression: %s and %s",
1185 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1186 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1188 if (ast_istype(exprs[0], ast_entfield))
1189 assignop = type_storep_instr[exprs[0]->expression.vtype];
1191 assignop = type_store_instr[exprs[0]->expression.vtype];
1192 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1193 (op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1194 exprs[0], exprs[1]);
1196 case opid3('&','~','='):
1197 /* This is like: a &= ~(b);
1198 * But QC has no bitwise-not, so we implement it as
1201 if (NotSameType(TYPE_FLOAT)) {
1202 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1203 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1204 parseerror(parser, "invalid types used in expression: %s and %s",
1208 if (ast_istype(exprs[0], ast_entfield))
1209 assignop = type_storep_instr[exprs[0]->expression.vtype];
1211 assignop = type_store_instr[exprs[0]->expression.vtype];
1212 out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1215 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1216 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1218 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1219 asbinstore->keep_dest = true;
1220 out = (ast_expression*)asbinstore;
1226 parseerror(parser, "failed to apply operand %s", op->op);
1230 DEBUGSHUNTDO(con_out("applied %s\n", op->op));
1231 vec_push(sy->out, syexp(ctx, out));
1235 static bool parser_close_call(parser_t *parser, shunt *sy)
1237 /* was a function call */
1238 ast_expression *fun;
1244 vec_shrinkby(sy->ops, 1);
1245 fid = sy->ops[vec_size(sy->ops)].off;
1247 /* out[fid] is the function
1248 * everything above is parameters...
1249 * 0 params = nothing
1250 * 1 params = ast_expression
1254 if (vec_size(sy->out) < 1 || vec_size(sy->out) <= fid) {
1255 parseerror(parser, "internal error: function call needs function and parameter list...");
1259 fun = sy->out[fid].out;
1261 if (fun == intrinsic_debug_typestring) {
1263 if (fid+2 != vec_size(sy->out) ||
1264 vec_last(sy->out).block)
1266 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1269 ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
1270 ast_unref(vec_last(sy->out).out);
1271 sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
1272 (ast_expression*)parser_const_string(parser, ty, false));
1273 vec_shrinkby(sy->out, 1);
1277 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1279 parseerror(parser, "internal error: failed to create ast_call node");
1283 if (fid+1 == vec_size(sy->out)) {
1286 } else if (fid+2 == vec_size(sy->out)) {
1288 vec_shrinkby(sy->out, 1);
1289 params = sy->out[vec_size(sy->out)].block;
1293 vec_push(call->params, sy->out[vec_size(sy->out)].out);
1295 paramcount = vec_size(params->exprs);
1296 call->params = params->exprs;
1297 params->exprs = NULL;
1300 if (!ast_call_check_types(call))
1303 parseerror(parser, "invalid function call");
1307 /* overwrite fid, the function, with a call */
1308 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1310 if (fun->expression.vtype != TYPE_FUNCTION) {
1311 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
1315 if (!fun->expression.next) {
1316 parseerror(parser, "could not determine function return type");
1319 if (vec_size(fun->expression.params) != paramcount &&
1320 !((fun->expression.flags & AST_FLAG_VARIADIC) &&
1321 vec_size(fun->expression.params) < paramcount))
1324 const char *fewmany = (vec_size(fun->expression.params) > paramcount) ? "few" : "many";
1326 fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1327 if (opts.standard == COMPILER_GMQCC)
1330 parseerror(parser, "too %s parameters for call to %s: expected %i, got %i\n"
1331 " -> `%s` has been declared here: %s:%i",
1332 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1333 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1335 parseerror(parser, "too %s parameters for function call: expected %i, got %i\n"
1336 " -> it has been declared here: %s:%i",
1337 fewmany, (int)vec_size(fun->expression.params), (int)paramcount,
1338 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1344 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1345 "too %s parameters for call to %s: expected %i, got %i\n"
1346 " -> `%s` has been declared here: %s:%i",
1347 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1348 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1350 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1351 "too %s parameters for function call: expected %i, got %i\n"
1352 " -> it has been declared here: %s:%i",
1353 fewmany, (int)vec_size(fun->expression.params), (int)paramcount,
1354 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1362 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
1364 if (!vec_size(sy->ops)) {
1365 parseerror(parser, "unmatched closing paren");
1368 /* this would for bit a + (x) because there are no operators inside (x)
1369 if (sy->ops[vec_size(sy->ops)-1].paren == 1) {
1370 parseerror(parser, "empty parenthesis expression");
1374 while (vec_size(sy->ops)) {
1375 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_FUNC) {
1376 if (!parser_close_call(parser, sy))
1380 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_EXPR) {
1381 vec_shrinkby(sy->ops, 1);
1382 return !functions_only;
1384 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_INDEX) {
1387 /* pop off the parenthesis */
1388 vec_shrinkby(sy->ops, 1);
1389 /* then apply the index operator */
1390 if (!parser_sy_apply_operator(parser, sy))
1394 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_TERNARY) {
1397 if (vec_last(parser->pot) != POT_TERNARY1) {
1398 parseerror(parser, "mismatched colon in ternary expression (missing closing paren?)");
1401 vec_last(parser->pot) = POT_TERNARY2;
1402 /* pop off the parenthesis */
1403 vec_shrinkby(sy->ops, 1);
1406 if (!parser_sy_apply_operator(parser, sy))
1412 static void parser_reclassify_token(parser_t *parser)
1415 for (i = 0; i < operator_count; ++i) {
1416 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1417 parser->tok = TOKEN_OPERATOR;
1423 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma)
1425 ast_expression *expr = NULL;
1427 bool wantop = false;
1428 bool gotmemberof = false;
1430 /* count the parens because an if starts with one, so the
1431 * end of a condition is an unmatched closing paren
1439 parser->lex->flags.noops = false;
1441 parser_reclassify_token(parser);
1446 gotmemberof = false;
1448 parser->memberof = 0;
1450 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1451 parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "_"))
1453 /* a translatable string */
1457 parseerror(parser, "expected operator or end of statement, got constant");
1461 parser->lex->flags.noops = true;
1462 if (!parser_next(parser) || parser->tok != '(') {
1463 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1466 parser->lex->flags.noops = false;
1467 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1468 parseerror(parser, "expected a constant string in translatable-string extension");
1471 val = parser_const_string(parser, parser_tokval(parser), true);
1475 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1476 DEBUGSHUNTDO(con_out("push string\n"));
1478 if (!parser_next(parser) || parser->tok != ')') {
1479 parseerror(parser, "expected closing paren after translatable string");
1483 else if (parser->tok == TOKEN_IDENT)
1485 ast_expression *var;
1487 parseerror(parser, "expected operator or end of statement");
1492 if (opts.standard == COMPILER_GMQCC)
1494 if (parser->memberof == TYPE_ENTITY) {
1495 /* still get vars first since there could be a fieldpointer */
1496 var = parser_find_var(parser, parser_tokval(parser));
1498 var = parser_find_field(parser, parser_tokval(parser));
1500 else if (parser->memberof == TYPE_VECTOR)
1502 parseerror(parser, "TODO: implement effective vector member access");
1505 else if (parser->memberof) {
1506 parseerror(parser, "namespace for member not found");
1510 var = parser_find_var(parser, parser_tokval(parser));
1512 var = parser_find_var(parser, parser_tokval(parser));
1514 var = parser_find_field(parser, parser_tokval(parser));
1518 if (!strcmp(parser_tokval(parser), "__builtin_debug_typestring")) {
1519 var = (ast_expression*)intrinsic_debug_typestring;
1524 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1530 if (ast_istype(var, ast_value)) {
1531 ((ast_value*)var)->uses++;
1533 else if (ast_istype(var, ast_member)) {
1534 ast_member *mem = (ast_member*)var;
1535 if (ast_istype(mem->owner, ast_value))
1536 ((ast_value*)(mem->owner))->uses++;
1539 vec_push(sy.out, syexp(parser_ctx(parser), var));
1540 DEBUGSHUNTDO(con_out("push %s\n", parser_tokval(parser)));
1542 else if (parser->tok == TOKEN_FLOATCONST) {
1545 parseerror(parser, "expected operator or end of statement, got constant");
1549 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1552 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1553 DEBUGSHUNTDO(con_out("push %g\n", parser_token(parser)->constval.f));
1555 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1558 parseerror(parser, "expected operator or end of statement, got constant");
1562 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1565 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1566 DEBUGSHUNTDO(con_out("push %i\n", parser_token(parser)->constval.i));
1568 else if (parser->tok == TOKEN_STRINGCONST) {
1571 parseerror(parser, "expected operator or end of statement, got constant");
1575 val = parser_const_string(parser, parser_tokval(parser), false);
1578 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1579 DEBUGSHUNTDO(con_out("push string\n"));
1581 else if (parser->tok == TOKEN_VECTORCONST) {
1584 parseerror(parser, "expected operator or end of statement, got constant");
1588 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1591 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1592 DEBUGSHUNTDO(con_out("push '%g %g %g'\n",
1593 parser_token(parser)->constval.v.x,
1594 parser_token(parser)->constval.v.y,
1595 parser_token(parser)->constval.v.z));
1597 else if (parser->tok == '(') {
1598 parseerror(parser, "internal error: '(' should be classified as operator");
1601 else if (parser->tok == '[') {
1602 parseerror(parser, "internal error: '[' should be classified as operator");
1605 else if (parser->tok == ')') {
1607 DEBUGSHUNTDO(con_out("do[op] )\n"));
1611 /* we do expect an operator next */
1612 /* closing an opening paren */
1613 if (!parser_close_paren(parser, &sy, false))
1615 if (vec_last(parser->pot) != POT_PAREN) {
1616 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1619 vec_pop(parser->pot);
1621 DEBUGSHUNTDO(con_out("do[nop] )\n"));
1625 /* allowed for function calls */
1626 if (!parser_close_paren(parser, &sy, true))
1628 if (vec_last(parser->pot) != POT_PAREN) {
1629 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1632 vec_pop(parser->pot);
1636 else if (parser->tok == ']') {
1638 parseerror(parser, "operand expected");
1642 if (!parser_close_paren(parser, &sy, false))
1644 if (vec_last(parser->pot) != POT_PAREN) {
1645 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1648 vec_pop(parser->pot);
1651 else if (parser->tok == TOKEN_TYPENAME) {
1652 parseerror(parser, "unexpected typename");
1655 else if (parser->tok != TOKEN_OPERATOR) {
1657 parseerror(parser, "expected operator or end of statement");
1664 /* classify the operator */
1665 const oper_info *op;
1666 const oper_info *olast = NULL;
1668 for (o = 0; o < operator_count; ++o) {
1669 if ((!(operators[o].flags & OP_PREFIX) == wantop) &&
1670 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1671 !strcmp(parser_tokval(parser), operators[o].op))
1676 if (o == operator_count) {
1677 /* no operator found... must be the end of the statement */
1680 /* found an operator */
1683 /* when declaring variables, a comma starts a new variable */
1684 if (op->id == opid1(',') && !parens && stopatcomma) {
1685 /* fixup the token */
1690 /* a colon without a pervious question mark cannot be a ternary */
1691 if (!ternaries && op->id == opid2(':','?')) {
1696 if (op->id == opid1(',')) {
1697 if (vec_size(parser->pot) && vec_last(parser->pot) == POT_TERNARY2) {
1698 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
1702 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1703 olast = &operators[vec_last(sy.ops).etype-1];
1706 (op->prec < olast->prec) ||
1707 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1709 if (!parser_sy_apply_operator(parser, &sy))
1711 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1712 olast = &operators[vec_last(sy.ops).etype-1];
1717 if (op->id == opid1('.') && opts.standard == COMPILER_GMQCC) {
1718 /* for gmqcc standard: open up the namespace of the previous type */
1719 ast_expression *prevex = vec_last(sy.out).out;
1721 parseerror(parser, "unexpected member operator");
1724 if (prevex->expression.vtype == TYPE_ENTITY)
1725 parser->memberof = TYPE_ENTITY;
1726 else if (prevex->expression.vtype == TYPE_VECTOR)
1727 parser->memberof = TYPE_VECTOR;
1729 parseerror(parser, "type error: type has no members");
1735 if (op->id == opid1('(')) {
1737 size_t sycount = vec_size(sy.out);
1738 DEBUGSHUNTDO(con_out("push [op] (\n"));
1739 ++parens; vec_push(parser->pot, POT_PAREN);
1740 /* we expected an operator, this is the function-call operator */
1741 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_FUNC, sycount-1));
1743 ++parens; vec_push(parser->pot, POT_PAREN);
1744 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_EXPR, 0));
1745 DEBUGSHUNTDO(con_out("push [nop] (\n"));
1748 } else if (op->id == opid1('[')) {
1750 parseerror(parser, "unexpected array subscript");
1753 ++parens; vec_push(parser->pot, POT_PAREN);
1754 /* push both the operator and the paren, this makes life easier */
1755 vec_push(sy.ops, syop(parser_ctx(parser), op));
1756 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_INDEX, 0));
1758 } else if (op->id == opid2('?',':')) {
1759 vec_push(sy.ops, syop(parser_ctx(parser), op));
1760 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_TERNARY, 0));
1763 vec_push(parser->pot, POT_TERNARY1);
1764 } else if (op->id == opid2(':','?')) {
1765 if (!vec_size(parser->pot)) {
1766 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1769 if (vec_last(parser->pot) != POT_TERNARY1) {
1770 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1773 if (!parser_close_paren(parser, &sy, false))
1775 vec_push(sy.ops, syop(parser_ctx(parser), op));
1779 DEBUGSHUNTDO(con_out("push operator %s\n", op->op));
1780 vec_push(sy.ops, syop(parser_ctx(parser), op));
1781 wantop = !!(op->flags & OP_SUFFIX);
1784 if (!parser_next(parser)) {
1787 if (parser->tok == ';' ||
1788 (!parens && parser->tok == ']'))
1794 while (vec_size(sy.ops)) {
1795 if (!parser_sy_apply_operator(parser, &sy))
1799 parser->lex->flags.noops = true;
1800 if (!vec_size(sy.out)) {
1801 parseerror(parser, "empty expression");
1804 expr = sy.out[0].out;
1807 DEBUGSHUNTDO(con_out("shunt done\n"));
1808 if (vec_size(parser->pot)) {
1809 parseerror(parser, "internal error: vec_size(parser->pot) = %lu", (unsigned long)vec_size(parser->pot));
1812 vec_free(parser->pot);
1816 parser->lex->flags.noops = true;
1822 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma)
1824 ast_expression *e = parse_expression_leave(parser, stopatcomma);
1827 if (!parser_next(parser)) {
1834 static void parser_enterblock(parser_t *parser)
1836 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
1837 vec_push(parser->_blocklocals, vec_size(parser->_locals));
1838 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
1839 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
1840 vec_push(parser->_block_ctx, parser_ctx(parser));
1843 static bool parser_leaveblock(parser_t *parser)
1846 size_t locals, typedefs;
1848 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
1849 parseerror(parser, "internal error: parser_leaveblock with no block");
1853 util_htdel(vec_last(parser->variables));
1854 vec_pop(parser->variables);
1855 if (!vec_size(parser->_blocklocals)) {
1856 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
1860 locals = vec_last(parser->_blocklocals);
1861 vec_pop(parser->_blocklocals);
1862 while (vec_size(parser->_locals) != locals) {
1863 ast_expression *e = vec_last(parser->_locals);
1864 ast_value *v = (ast_value*)e;
1865 vec_pop(parser->_locals);
1866 if (ast_istype(e, ast_value) && !v->uses) {
1867 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name)) {
1874 typedefs = vec_last(parser->_blocktypedefs);
1875 while (vec_size(parser->_typedefs) != typedefs) {
1876 ast_delete(vec_last(parser->_typedefs));
1877 vec_pop(parser->_typedefs);
1879 util_htdel(vec_last(parser->typedefs));
1880 vec_pop(parser->typedefs);
1882 vec_pop(parser->_block_ctx);
1886 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
1888 vec_push(parser->_locals, e);
1889 util_htset(vec_last(parser->variables), name, (void*)e);
1892 static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
1896 ast_expression *prev;
1898 if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->expression.vtype == TYPE_STRING)
1901 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
1904 parseerror(parser, "internal error: failed to process condition");
1909 else if (OPTS_FLAG(CORRECT_LOGIC) && cond->expression.vtype == TYPE_VECTOR)
1911 /* vector types need to be cast to true booleans */
1912 ast_binary *bin = (ast_binary*)cond;
1913 if (!OPTS_FLAG(PERL_LOGIC) || !ast_istype(cond, ast_binary) || !(bin->op == INSTR_AND || bin->op == INSTR_OR))
1915 /* in perl-logic, AND and OR take care of the -fcorrect-logic */
1917 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_V, cond);
1920 parseerror(parser, "internal error: failed to process condition");
1927 unary = (ast_unary*)cond;
1928 while (ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F)
1930 cond = unary->operand;
1931 unary->operand = NULL;
1934 unary = (ast_unary*)cond;
1938 parseerror(parser, "internal error: failed to process condition");
1940 if (ifnot) *_ifnot = !*_ifnot;
1944 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
1947 ast_expression *cond, *ontrue = NULL, *onfalse = NULL;
1950 lex_ctx ctx = parser_ctx(parser);
1952 (void)block; /* not touching */
1954 /* skip the 'if', parse an optional 'not' and check for an opening paren */
1955 if (!parser_next(parser)) {
1956 parseerror(parser, "expected condition or 'not'");
1959 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
1961 if (!parser_next(parser)) {
1962 parseerror(parser, "expected condition in parenthesis");
1966 if (parser->tok != '(') {
1967 parseerror(parser, "expected 'if' condition in parenthesis");
1970 /* parse into the expression */
1971 if (!parser_next(parser)) {
1972 parseerror(parser, "expected 'if' condition after opening paren");
1975 /* parse the condition */
1976 cond = parse_expression_leave(parser, false);
1980 if (parser->tok != ')') {
1981 parseerror(parser, "expected closing paren after 'if' condition");
1985 /* parse into the 'then' branch */
1986 if (!parser_next(parser)) {
1987 parseerror(parser, "expected statement for on-true branch of 'if'");
1991 if (!parse_statement_or_block(parser, &ontrue)) {
1995 /* check for an else */
1996 if (!strcmp(parser_tokval(parser), "else")) {
1997 /* parse into the 'else' branch */
1998 if (!parser_next(parser)) {
1999 parseerror(parser, "expected on-false branch after 'else'");
2004 if (!parse_statement_or_block(parser, &onfalse)) {
2011 cond = process_condition(parser, cond, &ifnot);
2013 if (ontrue) ast_delete(ontrue);
2014 if (onfalse) ast_delete(onfalse);
2019 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
2021 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
2022 *out = (ast_expression*)ifthen;
2026 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
2029 ast_expression *cond, *ontrue;
2033 lex_ctx ctx = parser_ctx(parser);
2035 (void)block; /* not touching */
2037 /* skip the 'while' and check for opening paren */
2038 if (!parser_next(parser) || parser->tok != '(') {
2039 parseerror(parser, "expected 'while' condition in parenthesis");
2042 /* parse into the expression */
2043 if (!parser_next(parser)) {
2044 parseerror(parser, "expected 'while' condition after opening paren");
2047 /* parse the condition */
2048 cond = parse_expression_leave(parser, false);
2052 if (parser->tok != ')') {
2053 parseerror(parser, "expected closing paren after 'while' condition");
2057 /* parse into the 'then' branch */
2058 if (!parser_next(parser)) {
2059 parseerror(parser, "expected while-loop body");
2063 if (!parse_statement_or_block(parser, &ontrue)) {
2068 cond = process_condition(parser, cond, &ifnot);
2073 aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue);
2074 *out = (ast_expression*)aloop;
2078 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2081 ast_expression *cond, *ontrue;
2085 lex_ctx ctx = parser_ctx(parser);
2087 (void)block; /* not touching */
2089 /* skip the 'do' and get the body */
2090 if (!parser_next(parser)) {
2091 parseerror(parser, "expected loop body");
2094 if (!parse_statement_or_block(parser, &ontrue))
2097 /* expect the "while" */
2098 if (parser->tok != TOKEN_KEYWORD ||
2099 strcmp(parser_tokval(parser), "while"))
2101 parseerror(parser, "expected 'while' and condition");
2106 /* skip the 'while' and check for opening paren */
2107 if (!parser_next(parser) || parser->tok != '(') {
2108 parseerror(parser, "expected 'while' condition in parenthesis");
2112 /* parse into the expression */
2113 if (!parser_next(parser)) {
2114 parseerror(parser, "expected 'while' condition after opening paren");
2118 /* parse the condition */
2119 cond = parse_expression_leave(parser, false);
2123 if (parser->tok != ')') {
2124 parseerror(parser, "expected closing paren after 'while' condition");
2130 if (!parser_next(parser) || parser->tok != ';') {
2131 parseerror(parser, "expected semicolon after condition");
2137 if (!parser_next(parser)) {
2138 parseerror(parser, "parse error");
2144 cond = process_condition(parser, cond, &ifnot);
2149 aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue);
2150 *out = (ast_expression*)aloop;
2154 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2157 ast_expression *initexpr, *cond, *increment, *ontrue;
2163 lex_ctx ctx = parser_ctx(parser);
2165 parser_enterblock(parser);
2172 /* skip the 'while' and check for opening paren */
2173 if (!parser_next(parser) || parser->tok != '(') {
2174 parseerror(parser, "expected 'for' expressions in parenthesis");
2177 /* parse into the expression */
2178 if (!parser_next(parser)) {
2179 parseerror(parser, "expected 'for' initializer after opening paren");
2184 if (parser->tok == TOKEN_IDENT)
2185 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2187 if (typevar || parser->tok == TOKEN_TYPENAME) {
2188 if (opts.standard != COMPILER_GMQCC) {
2189 if (parsewarning(parser, WARN_EXTENSIONS,
2190 "current standard does not allow variable declarations in for-loop initializers"))
2193 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false))
2196 else if (parser->tok != ';')
2198 initexpr = parse_expression_leave(parser, false);
2203 /* move on to condition */
2204 if (parser->tok != ';') {
2205 parseerror(parser, "expected semicolon after for-loop initializer");
2208 if (!parser_next(parser)) {
2209 parseerror(parser, "expected for-loop condition");
2213 /* parse the condition */
2214 if (parser->tok != ';') {
2215 cond = parse_expression_leave(parser, false);
2220 /* move on to incrementor */
2221 if (parser->tok != ';') {
2222 parseerror(parser, "expected semicolon after for-loop initializer");
2225 if (!parser_next(parser)) {
2226 parseerror(parser, "expected for-loop condition");
2230 /* parse the incrementor */
2231 if (parser->tok != ')') {
2232 increment = parse_expression_leave(parser, false);
2235 if (!ast_side_effects(increment)) {
2236 if (genwarning(ast_ctx(increment), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2242 if (parser->tok != ')') {
2243 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2246 /* parse into the 'then' branch */
2247 if (!parser_next(parser)) {
2248 parseerror(parser, "expected for-loop body");
2251 if (!parse_statement_or_block(parser, &ontrue))
2255 cond = process_condition(parser, cond, &ifnot);
2259 aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue);
2260 *out = (ast_expression*)aloop;
2262 if (!parser_leaveblock(parser))
2266 if (initexpr) ast_delete(initexpr);
2267 if (cond) ast_delete(cond);
2268 if (increment) ast_delete(increment);
2269 (void)!parser_leaveblock(parser);
2273 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2275 ast_expression *exp = NULL;
2276 ast_return *ret = NULL;
2277 ast_value *expected = parser->function->vtype;
2279 lex_ctx ctx = parser_ctx(parser);
2281 (void)block; /* not touching */
2283 if (!parser_next(parser)) {
2284 parseerror(parser, "expected return expression");
2288 if (parser->tok != ';') {
2289 exp = parse_expression(parser, false);
2293 if (exp->expression.vtype != expected->expression.next->expression.vtype) {
2294 parseerror(parser, "return with invalid expression");
2297 ret = ast_return_new(ctx, exp);
2303 if (!parser_next(parser))
2304 parseerror(parser, "parse error");
2305 if (expected->expression.next->expression.vtype != TYPE_VOID) {
2306 if (opts.standard != COMPILER_GMQCC)
2307 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2309 parseerror(parser, "return without value");
2311 ret = ast_return_new(ctx, NULL);
2313 *out = (ast_expression*)ret;
2317 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2319 lex_ctx ctx = parser_ctx(parser);
2321 (void)block; /* not touching */
2323 if (!parser_next(parser) || parser->tok != ';') {
2324 parseerror(parser, "expected semicolon");
2328 if (!parser_next(parser))
2329 parseerror(parser, "parse error");
2331 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue);
2335 /* returns true when it was a variable qualifier, false otherwise!
2336 * on error, cvq is set to CV_WRONG
2338 static bool parse_var_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *noreturn)
2340 bool had_const = false;
2341 bool had_var = false;
2342 bool had_noref = false;
2343 bool had_noreturn = false;
2346 if (!strcmp(parser_tokval(parser), "const"))
2348 else if (!strcmp(parser_tokval(parser), "var"))
2350 else if (with_local && !strcmp(parser_tokval(parser), "local"))
2352 else if (!strcmp(parser_tokval(parser), "noref"))
2354 else if (!strcmp(parser_tokval(parser), "noreturn"))
2355 had_noreturn = true;
2356 else if (!had_const && !had_var && !had_noref && !had_noreturn) {
2361 if (!parser_next(parser))
2371 *noreturn = had_noreturn;
2374 parseerror(parser, "parse error after variable qualifier");
2379 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
2381 ast_expression *operand;
2384 ast_switch *switchnode;
2385 ast_switch_case swcase;
2388 bool noref, noreturn;
2390 lex_ctx ctx = parser_ctx(parser);
2392 (void)block; /* not touching */
2395 /* parse over the opening paren */
2396 if (!parser_next(parser) || parser->tok != '(') {
2397 parseerror(parser, "expected switch operand in parenthesis");
2401 /* parse into the expression */
2402 if (!parser_next(parser)) {
2403 parseerror(parser, "expected switch operand");
2406 /* parse the operand */
2407 operand = parse_expression_leave(parser, false);
2411 switchnode = ast_switch_new(ctx, operand);
2414 if (parser->tok != ')') {
2415 ast_delete(switchnode);
2416 parseerror(parser, "expected closing paren after 'switch' operand");
2420 /* parse over the opening paren */
2421 if (!parser_next(parser) || parser->tok != '{') {
2422 ast_delete(switchnode);
2423 parseerror(parser, "expected list of cases");
2427 if (!parser_next(parser)) {
2428 ast_delete(switchnode);
2429 parseerror(parser, "expected 'case' or 'default'");
2433 /* new block; allow some variables to be declared here */
2434 parser_enterblock(parser);
2437 if (parser->tok == TOKEN_IDENT)
2438 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2439 if (typevar || parser->tok == TOKEN_TYPENAME) {
2440 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false)) {
2441 ast_delete(switchnode);
2446 if (parse_var_qualifiers(parser, true, &cvq, &noref, &noreturn))
2448 if (cvq == CV_WRONG) {
2449 ast_delete(switchnode);
2452 if (!parse_variable(parser, block, false, cvq, NULL, noref, noreturn)) {
2453 ast_delete(switchnode);
2462 while (parser->tok != '}') {
2463 ast_block *caseblock;
2465 if (parser->tok != TOKEN_KEYWORD) {
2466 ast_delete(switchnode);
2467 parseerror(parser, "expected 'case' or 'default'");
2470 if (!strcmp(parser_tokval(parser), "case")) {
2471 if (!parser_next(parser)) {
2472 ast_delete(switchnode);
2473 parseerror(parser, "expected expression for case");
2476 swcase.value = parse_expression_leave(parser, false);
2477 if (!swcase.value) {
2478 ast_delete(switchnode);
2479 parseerror(parser, "expected expression for case");
2482 if (!OPTS_FLAG(RELAXED_SWITCH)) {
2483 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
2484 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
2490 else if (!strcmp(parser_tokval(parser), "default")) {
2491 swcase.value = NULL;
2492 if (!parser_next(parser)) {
2493 ast_delete(switchnode);
2494 parseerror(parser, "expected colon");
2499 /* Now the colon and body */
2500 if (parser->tok != ':') {
2501 if (swcase.value) ast_unref(swcase.value);
2502 ast_delete(switchnode);
2503 parseerror(parser, "expected colon");
2507 if (!parser_next(parser)) {
2508 if (swcase.value) ast_unref(swcase.value);
2509 ast_delete(switchnode);
2510 parseerror(parser, "expected statements or case");
2513 caseblock = ast_block_new(parser_ctx(parser));
2515 if (swcase.value) ast_unref(swcase.value);
2516 ast_delete(switchnode);
2519 swcase.code = (ast_expression*)caseblock;
2520 vec_push(switchnode->cases, swcase);
2522 ast_expression *expr;
2523 if (parser->tok == '}')
2525 if (parser->tok == TOKEN_KEYWORD) {
2526 if (!strcmp(parser_tokval(parser), "case") ||
2527 !strcmp(parser_tokval(parser), "default"))
2532 if (!parse_statement(parser, caseblock, &expr, true)) {
2533 ast_delete(switchnode);
2538 if (!ast_block_add_expr(caseblock, expr)) {
2539 ast_delete(switchnode);
2545 parser_leaveblock(parser);
2548 if (parser->tok != '}') {
2549 ast_delete(switchnode);
2550 parseerror(parser, "expected closing paren of case list");
2553 if (!parser_next(parser)) {
2554 ast_delete(switchnode);
2555 parseerror(parser, "parse error after switch");
2558 *out = (ast_expression*)switchnode;
2562 static bool parse_goto(parser_t *parser, ast_expression **out)
2567 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2568 parseerror(parser, "expected label name after `goto`");
2572 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
2574 for (i = 0; i < vec_size(parser->labels); ++i) {
2575 if (!strcmp(parser->labels[i]->name, parser_tokval(parser))) {
2576 ast_goto_set_label(gt, parser->labels[i]);
2580 if (i == vec_size(parser->labels))
2581 vec_push(parser->gotos, gt);
2583 if (!parser_next(parser) || parser->tok != ';') {
2584 parseerror(parser, "semicolon expected after goto label");
2587 if (!parser_next(parser)) {
2588 parseerror(parser, "parse error after goto");
2592 *out = (ast_expression*)gt;
2596 static bool parse_skipwhite(parser_t *parser)
2599 if (!parser_next(parser))
2601 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
2602 return parser->tok < TOKEN_ERROR;
2605 static bool parse_eol(parser_t *parser)
2607 if (!parse_skipwhite(parser))
2609 return parser->tok == TOKEN_EOL;
2612 static bool parse_pragma_do(parser_t *parser)
2614 if (!parser_next(parser) ||
2615 parser->tok != TOKEN_IDENT ||
2616 strcmp(parser_tokval(parser), "pragma"))
2618 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
2621 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
2622 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
2626 if (!strcmp(parser_tokval(parser), "noref")) {
2627 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
2628 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
2631 parser->noref = !!parser_token(parser)->constval.i;
2632 if (!parse_eol(parser)) {
2633 parseerror(parser, "parse error after `noref` pragma");
2639 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
2646 static bool parse_pragma(parser_t *parser)
2649 parser->lex->flags.preprocessing = true;
2650 parser->lex->flags.mergelines = true;
2651 rv = parse_pragma_do(parser);
2652 if (parser->tok != TOKEN_EOL) {
2653 parseerror(parser, "junk after pragma");
2656 parser->lex->flags.preprocessing = false;
2657 parser->lex->flags.mergelines = false;
2658 if (!parser_next(parser)) {
2659 parseerror(parser, "parse error after pragma");
2665 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
2667 bool noref, noreturn;
2669 ast_value *typevar = NULL;
2673 if (parser->tok == TOKEN_IDENT)
2674 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2676 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
2678 /* local variable */
2680 parseerror(parser, "cannot declare a variable from here");
2683 if (opts.standard == COMPILER_QCC) {
2684 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
2687 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false))
2691 else if (parse_var_qualifiers(parser, !!block, &cvq, &noref, &noreturn))
2693 if (cvq == CV_WRONG)
2695 return parse_variable(parser, block, true, cvq, NULL, noref, noreturn);
2697 else if (parser->tok == TOKEN_KEYWORD)
2699 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
2704 if (!parser_next(parser)) {
2705 parseerror(parser, "parse error after __builtin_debug_printtype");
2709 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
2711 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
2712 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
2713 if (!parser_next(parser)) {
2714 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
2720 if (!parse_statement(parser, block, out, allow_cases))
2723 con_out("__builtin_debug_printtype: got no output node\n");
2726 ast_type_to_string(*out, ty, sizeof(ty));
2727 con_out("__builtin_debug_printtype: `%s`\n", ty);
2732 else if (!strcmp(parser_tokval(parser), "return"))
2734 return parse_return(parser, block, out);
2736 else if (!strcmp(parser_tokval(parser), "if"))
2738 return parse_if(parser, block, out);
2740 else if (!strcmp(parser_tokval(parser), "while"))
2742 return parse_while(parser, block, out);
2744 else if (!strcmp(parser_tokval(parser), "do"))
2746 return parse_dowhile(parser, block, out);
2748 else if (!strcmp(parser_tokval(parser), "for"))
2750 if (opts.standard == COMPILER_QCC) {
2751 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
2754 return parse_for(parser, block, out);
2756 else if (!strcmp(parser_tokval(parser), "break"))
2758 return parse_break_continue(parser, block, out, false);
2760 else if (!strcmp(parser_tokval(parser), "continue"))
2762 return parse_break_continue(parser, block, out, true);
2764 else if (!strcmp(parser_tokval(parser), "switch"))
2766 return parse_switch(parser, block, out);
2768 else if (!strcmp(parser_tokval(parser), "case") ||
2769 !strcmp(parser_tokval(parser), "default"))
2772 parseerror(parser, "unexpected 'case' label");
2777 else if (!strcmp(parser_tokval(parser), "goto"))
2779 return parse_goto(parser, out);
2781 else if (!strcmp(parser_tokval(parser), "typedef"))
2783 if (!parser_next(parser)) {
2784 parseerror(parser, "expected type definition after 'typedef'");
2787 return parse_typedef(parser);
2789 parseerror(parser, "Unexpected keyword");
2792 else if (parser->tok == '{')
2795 inner = parse_block(parser);
2798 *out = (ast_expression*)inner;
2801 else if (parser->tok == ':')
2805 if (!parser_next(parser)) {
2806 parseerror(parser, "expected label name");
2809 if (parser->tok != TOKEN_IDENT) {
2810 parseerror(parser, "label must be an identifier");
2813 label = ast_label_new(parser_ctx(parser), parser_tokval(parser));
2816 vec_push(parser->labels, label);
2817 *out = (ast_expression*)label;
2818 if (!parser_next(parser)) {
2819 parseerror(parser, "parse error after label");
2822 for (i = 0; i < vec_size(parser->gotos); ++i) {
2823 if (!strcmp(parser->gotos[i]->name, label->name)) {
2824 ast_goto_set_label(parser->gotos[i], label);
2825 vec_remove(parser->gotos, i, 1);
2831 else if (parser->tok == ';')
2833 if (!parser_next(parser)) {
2834 parseerror(parser, "parse error after empty statement");
2841 ast_expression *exp = parse_expression(parser, false);
2845 if (!ast_side_effects(exp)) {
2846 if (genwarning(ast_ctx(exp), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2853 static bool parse_block_into(parser_t *parser, ast_block *block)
2857 parser_enterblock(parser);
2859 if (!parser_next(parser)) { /* skip the '{' */
2860 parseerror(parser, "expected function body");
2864 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
2866 ast_expression *expr = NULL;
2867 if (parser->tok == '}')
2870 if (!parse_statement(parser, block, &expr, false)) {
2871 /* parseerror(parser, "parse error"); */
2877 if (!ast_block_add_expr(block, expr)) {
2884 if (parser->tok != '}') {
2887 (void)parser_next(parser);
2891 if (!parser_leaveblock(parser))
2893 return retval && !!block;
2896 static ast_block* parse_block(parser_t *parser)
2899 block = ast_block_new(parser_ctx(parser));
2902 if (!parse_block_into(parser, block)) {
2903 ast_block_delete(block);
2909 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
2911 if (parser->tok == '{') {
2912 *out = (ast_expression*)parse_block(parser);
2915 return parse_statement(parser, NULL, out, false);
2918 static bool create_vector_members(ast_value *var, ast_member **me)
2921 size_t len = strlen(var->name);
2923 for (i = 0; i < 3; ++i) {
2924 char *name = mem_a(len+3);
2925 memcpy(name, var->name, len);
2927 name[len+1] = 'x'+i;
2929 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
2938 do { ast_member_delete(me[--i]); } while(i);
2942 static bool parse_function_body(parser_t *parser, ast_value *var)
2944 ast_block *block = NULL;
2949 ast_expression *framenum = NULL;
2950 ast_expression *nextthink = NULL;
2951 /* None of the following have to be deleted */
2952 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
2953 ast_expression *gbl_time = NULL, *gbl_self = NULL;
2954 bool has_frame_think;
2958 has_frame_think = false;
2959 old = parser->function;
2961 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
2962 parseerror(parser, "gotos/labels leaking");
2966 if (var->expression.flags & AST_FLAG_VARIADIC) {
2967 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
2968 "variadic function with implementation will not be able to access additional parameters"))
2974 if (parser->tok == '[') {
2975 /* got a frame definition: [ framenum, nextthink ]
2976 * this translates to:
2977 * self.frame = framenum;
2978 * self.nextthink = time + 0.1;
2979 * self.think = nextthink;
2983 fld_think = parser_find_field(parser, "think");
2984 fld_nextthink = parser_find_field(parser, "nextthink");
2985 fld_frame = parser_find_field(parser, "frame");
2986 if (!fld_think || !fld_nextthink || !fld_frame) {
2987 parseerror(parser, "cannot use [frame,think] notation without the required fields");
2988 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
2991 gbl_time = parser_find_global(parser, "time");
2992 gbl_self = parser_find_global(parser, "self");
2993 if (!gbl_time || !gbl_self) {
2994 parseerror(parser, "cannot use [frame,think] notation without the required globals");
2995 parseerror(parser, "please declare the following globals: `time`, `self`");
2999 if (!parser_next(parser))
3002 framenum = parse_expression_leave(parser, true);
3004 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
3007 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
3008 ast_unref(framenum);
3009 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
3013 if (parser->tok != ',') {
3014 ast_unref(framenum);
3015 parseerror(parser, "expected comma after frame number in [frame,think] notation");
3016 parseerror(parser, "Got a %i\n", parser->tok);
3020 if (!parser_next(parser)) {
3021 ast_unref(framenum);
3025 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
3027 /* qc allows the use of not-yet-declared functions here
3028 * - this automatically creates a prototype */
3029 ast_value *thinkfunc;
3030 ast_expression *functype = fld_think->expression.next;
3032 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
3033 if (!thinkfunc || !ast_type_adopt(thinkfunc, functype)) {
3034 ast_unref(framenum);
3035 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
3039 if (!parser_next(parser)) {
3040 ast_unref(framenum);
3041 ast_delete(thinkfunc);
3045 vec_push(parser->globals, (ast_expression*)thinkfunc);
3046 util_htset(parser->htglobals, thinkfunc->name, thinkfunc);
3047 nextthink = (ast_expression*)thinkfunc;
3050 nextthink = parse_expression_leave(parser, true);
3052 ast_unref(framenum);
3053 parseerror(parser, "expected a think-function in [frame,think] notation");
3058 if (!ast_istype(nextthink, ast_value)) {
3059 parseerror(parser, "think-function in [frame,think] notation must be a constant");
3063 if (retval && parser->tok != ']') {
3064 parseerror(parser, "expected closing `]` for [frame,think] notation");
3068 if (retval && !parser_next(parser)) {
3072 if (retval && parser->tok != '{') {
3073 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
3078 ast_unref(nextthink);
3079 ast_unref(framenum);
3083 has_frame_think = true;
3086 block = ast_block_new(parser_ctx(parser));
3088 parseerror(parser, "failed to allocate block");
3089 if (has_frame_think) {
3090 ast_unref(nextthink);
3091 ast_unref(framenum);
3096 if (has_frame_think) {
3098 ast_expression *self_frame;
3099 ast_expression *self_nextthink;
3100 ast_expression *self_think;
3101 ast_expression *time_plus_1;
3102 ast_store *store_frame;
3103 ast_store *store_nextthink;
3104 ast_store *store_think;
3106 ctx = parser_ctx(parser);
3107 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
3108 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
3109 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
3111 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
3112 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
3114 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
3115 if (self_frame) ast_delete(self_frame);
3116 if (self_nextthink) ast_delete(self_nextthink);
3117 if (self_think) ast_delete(self_think);
3118 if (time_plus_1) ast_delete(time_plus_1);
3124 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
3125 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
3126 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
3129 ast_delete(self_frame);
3132 if (!store_nextthink) {
3133 ast_delete(self_nextthink);
3137 ast_delete(self_think);
3141 if (store_frame) ast_delete(store_frame);
3142 if (store_nextthink) ast_delete(store_nextthink);
3143 if (store_think) ast_delete(store_think);
3146 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
3147 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
3148 !ast_block_add_expr(block, (ast_expression*)store_think))
3155 parseerror(parser, "failed to generate code for [frame,think]");
3156 ast_unref(nextthink);
3157 ast_unref(framenum);
3163 parser_enterblock(parser);
3165 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
3167 ast_value *param = var->expression.params[parami];
3170 if (param->expression.vtype != TYPE_VECTOR &&
3171 (param->expression.vtype != TYPE_FIELD ||
3172 param->expression.next->expression.vtype != TYPE_VECTOR))
3177 if (!create_vector_members(param, me)) {
3178 ast_block_delete(block);
3182 for (e = 0; e < 3; ++e) {
3183 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
3184 ast_block_collect(block, (ast_expression*)me[e]);
3188 func = ast_function_new(ast_ctx(var), var->name, var);
3190 parseerror(parser, "failed to allocate function for `%s`", var->name);
3191 ast_block_delete(block);
3194 vec_push(parser->functions, func);
3196 parser->function = func;
3197 if (!parse_block_into(parser, block)) {
3198 ast_block_delete(block);
3202 vec_push(func->blocks, block);
3204 parser->function = old;
3205 if (!parser_leaveblock(parser))
3207 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
3208 parseerror(parser, "internal error: local scopes left");
3212 if (parser->tok == ';')
3213 return parser_next(parser);
3214 else if (opts.standard == COMPILER_QCC)
3215 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
3219 vec_pop(parser->functions);
3220 ast_function_delete(func);
3221 var->constval.vfunc = NULL;
3224 (void)!parser_leaveblock(parser);
3225 parser->function = old;
3229 static ast_expression *array_accessor_split(
3234 ast_expression *left,
3235 ast_expression *right
3241 lex_ctx ctx = ast_ctx(array);
3243 if (!left || !right) {
3244 if (left) ast_delete(left);
3245 if (right) ast_delete(right);
3249 cmp = ast_binary_new(ctx, INSTR_LT,
3250 (ast_expression*)index,
3251 (ast_expression*)parser_const_float(parser, middle));
3255 parseerror(parser, "internal error: failed to create comparison for array setter");
3259 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
3261 ast_delete(cmp); /* will delete left and right */
3262 parseerror(parser, "internal error: failed to create conditional jump for array setter");
3266 return (ast_expression*)ifthen;
3269 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
3271 lex_ctx ctx = ast_ctx(array);
3273 if (from+1 == afterend) {
3274 /* set this value */
3277 ast_array_index *subscript;
3279 int assignop = type_store_instr[value->expression.vtype];
3281 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3282 assignop = INSTR_STORE_V;
3284 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3288 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
3290 ast_delete(subscript);
3294 block = ast_block_new(ctx);
3300 if (!ast_block_add_expr(block, (ast_expression*)st)) {
3305 ret = ast_return_new(ctx, NULL);
3311 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
3316 return (ast_expression*)block;
3318 ast_expression *left, *right;
3319 size_t diff = afterend - from;
3320 size_t middle = from + diff/2;
3321 left = array_setter_node(parser, array, index, value, from, middle);
3322 right = array_setter_node(parser, array, index, value, middle, afterend);
3323 return array_accessor_split(parser, array, index, middle, left, right);
3327 static ast_expression *array_field_setter_node(
3336 lex_ctx ctx = ast_ctx(array);
3338 if (from+1 == afterend) {
3339 /* set this value */
3342 ast_entfield *entfield;
3343 ast_array_index *subscript;
3345 int assignop = type_storep_instr[value->expression.vtype];
3347 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3348 assignop = INSTR_STOREP_V;
3350 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3354 entfield = ast_entfield_new_force(ctx,
3355 (ast_expression*)entity,
3356 (ast_expression*)subscript,
3357 (ast_expression*)subscript);
3359 ast_delete(subscript);
3363 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
3365 ast_delete(entfield);
3369 block = ast_block_new(ctx);
3375 if (!ast_block_add_expr(block, (ast_expression*)st)) {
3380 ret = ast_return_new(ctx, NULL);
3386 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
3391 return (ast_expression*)block;
3393 ast_expression *left, *right;
3394 size_t diff = afterend - from;
3395 size_t middle = from + diff/2;
3396 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
3397 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
3398 return array_accessor_split(parser, array, index, middle, left, right);
3402 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
3404 lex_ctx ctx = ast_ctx(array);
3406 if (from+1 == afterend) {
3408 ast_array_index *subscript;
3410 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3414 ret = ast_return_new(ctx, (ast_expression*)subscript);
3416 ast_delete(subscript);
3420 return (ast_expression*)ret;
3422 ast_expression *left, *right;
3423 size_t diff = afterend - from;
3424 size_t middle = from + diff/2;
3425 left = array_getter_node(parser, array, index, from, middle);
3426 right = array_getter_node(parser, array, index, middle, afterend);
3427 return array_accessor_split(parser, array, index, middle, left, right);
3431 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
3433 ast_function *func = NULL;
3434 ast_value *fval = NULL;
3435 ast_block *body = NULL;
3437 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
3439 parseerror(parser, "failed to create accessor function value");
3443 func = ast_function_new(ast_ctx(array), funcname, fval);
3446 parseerror(parser, "failed to create accessor function node");
3450 body = ast_block_new(ast_ctx(array));
3452 parseerror(parser, "failed to create block for array accessor");
3458 vec_push(func->blocks, body);
3461 vec_push(parser->accessors, fval);
3466 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
3468 ast_expression *root = NULL;
3469 ast_value *index = NULL;
3470 ast_value *value = NULL;
3474 if (!ast_istype(array->expression.next, ast_value)) {
3475 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3479 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3481 func = fval->constval.vfunc;
3482 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
3484 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3485 value = ast_value_copy((ast_value*)array->expression.next);
3487 if (!index || !value) {
3488 parseerror(parser, "failed to create locals for array accessor");
3491 (void)!ast_value_set_name(value, "value"); /* not important */
3492 vec_push(fval->expression.params, index);
3493 vec_push(fval->expression.params, value);
3495 root = array_setter_node(parser, array, index, value, 0, array->expression.count);
3497 parseerror(parser, "failed to build accessor search tree");
3501 array->setter = fval;
3502 return ast_block_add_expr(func->blocks[0], root);
3504 if (index) ast_delete(index);
3505 if (value) ast_delete(value);
3506 if (root) ast_delete(root);
3512 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
3514 ast_expression *root = NULL;
3515 ast_value *entity = NULL;
3516 ast_value *index = NULL;
3517 ast_value *value = NULL;
3521 if (!ast_istype(array->expression.next, ast_value)) {
3522 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3526 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3528 func = fval->constval.vfunc;
3529 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
3531 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
3532 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3533 value = ast_value_copy((ast_value*)array->expression.next);
3534 if (!entity || !index || !value) {
3535 parseerror(parser, "failed to create locals for array accessor");
3538 (void)!ast_value_set_name(value, "value"); /* not important */
3539 vec_push(fval->expression.params, entity);
3540 vec_push(fval->expression.params, index);
3541 vec_push(fval->expression.params, value);
3543 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
3545 parseerror(parser, "failed to build accessor search tree");
3549 array->setter = fval;
3550 return ast_block_add_expr(func->blocks[0], root);
3552 if (entity) ast_delete(entity);
3553 if (index) ast_delete(index);
3554 if (value) ast_delete(value);
3555 if (root) ast_delete(root);
3561 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
3563 ast_expression *root = NULL;
3564 ast_value *index = NULL;
3568 /* NOTE: checking array->expression.next rather than elemtype since
3569 * for fields elemtype is a temporary fieldtype.
3571 if (!ast_istype(array->expression.next, ast_value)) {
3572 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3576 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3578 func = fval->constval.vfunc;
3579 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
3581 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3584 parseerror(parser, "failed to create locals for array accessor");
3587 vec_push(fval->expression.params, index);
3589 root = array_getter_node(parser, array, index, 0, array->expression.count);
3591 parseerror(parser, "failed to build accessor search tree");
3595 array->getter = fval;
3596 return ast_block_add_expr(func->blocks[0], root);
3598 if (index) ast_delete(index);
3599 if (root) ast_delete(root);
3605 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
3606 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
3614 bool variadic = false;
3616 ctx = parser_ctx(parser);
3618 /* for the sake of less code we parse-in in this function */
3619 if (!parser_next(parser)) {
3620 parseerror(parser, "expected parameter list");
3626 /* parse variables until we hit a closing paren */
3627 while (parser->tok != ')') {
3629 /* there must be commas between them */
3630 if (parser->tok != ',') {
3631 parseerror(parser, "expected comma or end of parameter list");
3634 if (!parser_next(parser)) {
3635 parseerror(parser, "expected parameter");
3641 if (parser->tok == TOKEN_DOTS) {
3642 /* '...' indicates a varargs function */
3644 if (!parser_next(parser)) {
3645 parseerror(parser, "expected parameter");
3648 if (parser->tok != ')') {
3649 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
3655 /* for anything else just parse a typename */
3656 param = parse_typename(parser, NULL, NULL);
3659 vec_push(params, param);
3660 if (param->expression.vtype >= TYPE_VARIANT) {
3661 char typename[1024];
3662 ast_type_to_string((ast_expression*)param, typename, sizeof(typename));
3663 parseerror(parser, "type not supported as part of a parameter list: %s", typename);
3669 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
3673 if (vec_size(params) > 8 && opts.standard == COMPILER_QCC)
3674 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
3677 if (!parser_next(parser)) {
3678 parseerror(parser, "parse error after typename");
3682 /* now turn 'var' into a function type */
3683 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
3684 fval->expression.next = (ast_expression*)var;
3686 fval->expression.flags |= AST_FLAG_VARIADIC;
3689 var->expression.params = params;
3696 for (i = 0; i < vec_size(params); ++i)
3697 ast_delete(params[i]);
3702 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
3704 ast_expression *cexp;
3705 ast_value *cval, *tmp;
3708 ctx = parser_ctx(parser);
3710 if (!parser_next(parser)) {
3712 parseerror(parser, "expected array-size");
3716 cexp = parse_expression_leave(parser, true);
3718 if (!cexp || !ast_istype(cexp, ast_value)) {
3722 parseerror(parser, "expected array-size as constant positive integer");
3725 cval = (ast_value*)cexp;
3727 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
3728 tmp->expression.next = (ast_expression*)var;
3731 if (cval->expression.vtype == TYPE_INTEGER)
3732 tmp->expression.count = cval->constval.vint;
3733 else if (cval->expression.vtype == TYPE_FLOAT)
3734 tmp->expression.count = cval->constval.vfloat;
3738 parseerror(parser, "array-size must be a positive integer constant");
3743 if (parser->tok != ']') {
3745 parseerror(parser, "expected ']' after array-size");
3748 if (!parser_next(parser)) {
3750 parseerror(parser, "error after parsing array size");
3756 /* Parse a complete typename.
3757 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
3758 * but when parsing variables separated by comma
3759 * 'storebase' should point to where the base-type should be kept.
3760 * The base type makes up every bit of type information which comes *before* the
3763 * The following will be parsed in its entirety:
3765 * The 'basetype' in this case is 'void()'
3766 * and if there's a comma after it, say:
3768 * then the type-information 'void()' can be stored in 'storebase'
3770 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
3772 ast_value *var, *tmp;
3775 const char *name = NULL;
3776 bool isfield = false;
3777 bool wasarray = false;
3778 size_t morefields = 0;
3780 ctx = parser_ctx(parser);
3782 /* types may start with a dot */
3783 if (parser->tok == '.') {
3785 /* if we parsed a dot we need a typename now */
3786 if (!parser_next(parser)) {
3787 parseerror(parser, "expected typename for field definition");
3791 /* Further dots are handled seperately because they won't be part of the
3794 while (parser->tok == '.') {
3796 if (!parser_next(parser)) {
3797 parseerror(parser, "expected typename for field definition");
3802 if (parser->tok == TOKEN_IDENT)
3803 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
3804 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
3805 parseerror(parser, "expected typename");
3809 /* generate the basic type value */
3810 if (cached_typedef) {
3811 var = ast_value_copy(cached_typedef);
3812 ast_value_set_name(var, "<type(from_def)>");
3814 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
3816 for (; morefields; --morefields) {
3817 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
3818 tmp->expression.next = (ast_expression*)var;
3822 /* do not yet turn into a field - remember:
3823 * .void() foo; is a field too
3824 * .void()() foo; is a function
3828 if (!parser_next(parser)) {
3830 parseerror(parser, "parse error after typename");
3834 /* an opening paren now starts the parameter-list of a function
3835 * this is where original-QC has parameter lists.
3836 * We allow a single parameter list here.
3837 * Much like fteqcc we don't allow `float()() x`
3839 if (parser->tok == '(') {
3840 var = parse_parameter_list(parser, var);
3845 /* store the base if requested */
3847 *storebase = ast_value_copy(var);
3849 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3850 tmp->expression.next = (ast_expression*)*storebase;
3855 /* there may be a name now */
3856 if (parser->tok == TOKEN_IDENT) {
3857 name = util_strdup(parser_tokval(parser));
3859 if (!parser_next(parser)) {
3861 parseerror(parser, "error after variable or field declaration");
3866 /* now this may be an array */
3867 if (parser->tok == '[') {
3869 var = parse_arraysize(parser, var);
3874 /* This is the point where we can turn it into a field */
3876 /* turn it into a field if desired */
3877 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3878 tmp->expression.next = (ast_expression*)var;
3882 /* now there may be function parens again */
3883 if (parser->tok == '(' && opts.standard == COMPILER_QCC)
3884 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3885 if (parser->tok == '(' && wasarray)
3886 parseerror(parser, "arrays as part of a return type is not supported");
3887 while (parser->tok == '(') {
3888 var = parse_parameter_list(parser, var);
3897 /* finally name it */
3899 if (!ast_value_set_name(var, name)) {
3901 parseerror(parser, "internal error: failed to set name");
3904 /* free the name, ast_value_set_name duplicates */
3911 static bool parse_typedef(parser_t *parser)
3913 ast_value *typevar, *oldtype;
3914 ast_expression *old;
3916 typevar = parse_typename(parser, NULL, NULL);
3921 if ( (old = parser_find_var(parser, typevar->name)) ) {
3922 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
3923 " -> `%s` has been declared here: %s:%i",
3924 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
3925 ast_delete(typevar);
3929 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
3930 parseerror(parser, "type `%s` has already been declared here: %s:%i",
3931 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
3932 ast_delete(typevar);
3936 vec_push(parser->_typedefs, typevar);
3937 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
3939 if (parser->tok != ';') {
3940 parseerror(parser, "expected semicolon after typedef");
3943 if (!parser_next(parser)) {
3944 parseerror(parser, "parse error after typedef");
3951 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref, bool noreturn)
3955 ast_expression *old;
3959 ast_value *basetype = NULL;
3961 bool isparam = false;
3962 bool isvector = false;
3963 bool cleanvar = true;
3964 bool wasarray = false;
3968 /* get the first complete variable */
3969 var = parse_typename(parser, &basetype, cached_typedef);
3972 ast_delete(basetype);
3980 /* Part 0: finish the type */
3981 if (parser->tok == '(') {
3982 if (opts.standard == COMPILER_QCC)
3983 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3984 var = parse_parameter_list(parser, var);
3990 /* we only allow 1-dimensional arrays */
3991 if (parser->tok == '[') {
3993 var = parse_arraysize(parser, var);
3999 if (parser->tok == '(' && wasarray) {
4000 parseerror(parser, "arrays as part of a return type is not supported");
4001 /* we'll still parse the type completely for now */
4003 /* for functions returning functions */
4004 while (parser->tok == '(') {
4005 if (opts.standard == COMPILER_QCC)
4006 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4007 var = parse_parameter_list(parser, var);
4014 var->cvq = qualifier;
4015 /* in a noref section we simply bump the usecount */
4016 if (noref || parser->noref)
4019 var->expression.flags |= AST_FLAG_NORETURN;
4022 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
4023 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
4024 * is then filled with the previous definition and the parameter-names replaced.
4027 /* Deal with end_sys_ vars */
4029 if (!strcmp(var->name, "end_sys_globals")) {
4031 parser->crc_globals = vec_size(parser->globals);
4034 else if (!strcmp(var->name, "end_sys_fields")) {
4036 parser->crc_fields = vec_size(parser->fields);
4039 if (was_end && var->expression.vtype == TYPE_FIELD) {
4040 if (parsewarning(parser, WARN_END_SYS_FIELDS,
4041 "global '%s' hint should not be a field",
4042 parser_tokval(parser)))
4049 if (!nofields && var->expression.vtype == TYPE_FIELD)
4051 /* deal with field declarations */
4052 old = parser_find_field(parser, var->name);
4054 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
4055 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
4064 parseerror(parser, "field `%s` already declared here: %s:%i",
4065 var->name, ast_ctx(old).file, ast_ctx(old).line);
4070 if (opts.standard == COMPILER_QCC &&
4071 (old = parser_find_global(parser, var->name)))
4073 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
4074 parseerror(parser, "field `%s` already declared here: %s:%i",
4075 var->name, ast_ctx(old).file, ast_ctx(old).line);
4082 /* deal with other globals */
4083 old = parser_find_global(parser, var->name);
4084 if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
4086 /* This is a function which had a prototype */
4087 if (!ast_istype(old, ast_value)) {
4088 parseerror(parser, "internal error: prototype is not an ast_value");
4092 proto = (ast_value*)old;
4093 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
4094 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
4096 ast_ctx(proto).file, ast_ctx(proto).line);
4100 /* we need the new parameter-names */
4101 for (i = 0; i < vec_size(proto->expression.params); ++i)
4102 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
4110 if (opts.standard == COMPILER_GMQCC) {
4111 parseerror(parser, "global `%s` already declared here: %s:%i",
4112 var->name, ast_ctx(old).file, ast_ctx(old).line);
4116 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
4117 "global `%s` already declared here: %s:%i",
4118 var->name, ast_ctx(old).file, ast_ctx(old).line))
4123 proto = (ast_value*)old;
4124 if (!ast_istype(old, ast_value)) {
4125 parseerror(parser, "internal error: not an ast_value");
4134 if (opts.standard == COMPILER_QCC &&
4135 (old = parser_find_field(parser, var->name)))
4137 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
4138 parseerror(parser, "global `%s` already declared here: %s:%i",
4139 var->name, ast_ctx(old).file, ast_ctx(old).line);
4146 else /* it's not a global */
4148 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
4149 if (old && !isparam) {
4150 parseerror(parser, "local `%s` already declared here: %s:%i",
4151 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
4155 old = parser_find_local(parser, var->name, 0, &isparam);
4156 if (old && isparam) {
4157 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
4158 "local `%s` is shadowing a parameter", var->name))
4160 parseerror(parser, "local `%s` already declared here: %s:%i",
4161 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
4165 if (opts.standard != COMPILER_GMQCC) {
4174 * Create the global/local, and deal with vector types.
4177 if (var->expression.vtype == TYPE_VECTOR)
4179 else if (var->expression.vtype == TYPE_FIELD &&
4180 var->expression.next->expression.vtype == TYPE_VECTOR)
4184 if (!create_vector_members(var, me)) {
4191 /* deal with global variables, fields, functions */
4192 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
4193 var->isfield = true;
4194 vec_push(parser->fields, (ast_expression*)var);
4195 util_htset(parser->htfields, var->name, var);
4197 for (i = 0; i < 3; ++i) {
4198 vec_push(parser->fields, (ast_expression*)me[i]);
4199 util_htset(parser->htfields, me[i]->name, me[i]);
4204 vec_push(parser->globals, (ast_expression*)var);
4205 util_htset(parser->htglobals, var->name, var);
4207 for (i = 0; i < 3; ++i) {
4208 vec_push(parser->globals, (ast_expression*)me[i]);
4209 util_htset(parser->htglobals, me[i]->name, me[i]);
4214 vec_push(localblock->locals, var);
4215 parser_addlocal(parser, var->name, (ast_expression*)var);
4217 for (i = 0; i < 3; ++i) {
4218 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
4219 ast_block_collect(localblock, (ast_expression*)me[i]);
4225 me[0] = me[1] = me[2] = NULL;
4230 if (var->expression.vtype == TYPE_ARRAY) {
4232 snprintf(name, sizeof(name), "%s##SET", var->name);
4233 if (!parser_create_array_setter(parser, var, name))
4235 snprintf(name, sizeof(name), "%s##GET", var->name);
4236 if (!parser_create_array_getter(parser, var, var->expression.next, name))
4239 else if (!localblock && !nofields &&
4240 var->expression.vtype == TYPE_FIELD &&
4241 var->expression.next->expression.vtype == TYPE_ARRAY)
4244 ast_expression *telem;
4246 ast_value *array = (ast_value*)var->expression.next;
4248 if (!ast_istype(var->expression.next, ast_value)) {
4249 parseerror(parser, "internal error: field element type must be an ast_value");
4253 snprintf(name, sizeof(name), "%s##SETF", var->name);
4254 if (!parser_create_array_field_setter(parser, array, name))
4257 telem = ast_type_copy(ast_ctx(var), array->expression.next);
4258 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
4259 tfield->expression.next = telem;
4260 snprintf(name, sizeof(name), "%s##GETFP", var->name);
4261 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
4269 if (parser->tok == ';') {
4270 ast_delete(basetype);
4271 if (!parser_next(parser)) {
4272 parseerror(parser, "error after variable declaration");
4278 if (parser->tok == ',')
4282 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
4285 parseerror(parser, "missing comma or semicolon while parsing variables");
4289 if (localblock && opts.standard == COMPILER_QCC) {
4290 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
4291 "initializing expression turns variable `%s` into a constant in this standard",
4298 if (parser->tok != '{') {
4299 if (parser->tok != '=') {
4300 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
4304 if (!parser_next(parser)) {
4305 parseerror(parser, "error parsing initializer");
4309 else if (opts.standard == COMPILER_QCC) {
4310 parseerror(parser, "expected '=' before function body in this standard");
4313 if (parser->tok == '#') {
4314 ast_function *func = NULL;
4317 parseerror(parser, "cannot declare builtins within functions");
4320 if (var->expression.vtype != TYPE_FUNCTION) {
4321 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
4324 if (!parser_next(parser)) {
4325 parseerror(parser, "expected builtin number");
4328 if (parser->tok != TOKEN_INTCONST) {
4329 parseerror(parser, "builtin number must be an integer constant");
4332 if (parser_token(parser)->constval.i < 0) {
4333 parseerror(parser, "builtin number must be an integer greater than zero");
4337 if (var->hasvalue) {
4338 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
4339 "builtin `%s` has already been defined\n"
4340 " -> previous declaration here: %s:%i",
4341 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
4345 func = ast_function_new(ast_ctx(var), var->name, var);
4347 parseerror(parser, "failed to allocate function for `%s`", var->name);
4350 vec_push(parser->functions, func);
4352 func->builtin = -parser_token(parser)->constval.i-1;
4355 if (!parser_next(parser)) {
4356 parseerror(parser, "expected comma or semicolon");
4358 ast_function_delete(func);
4359 var->constval.vfunc = NULL;
4363 else if (parser->tok == '{' || parser->tok == '[')
4366 parseerror(parser, "cannot declare functions within functions");
4371 ast_ctx(proto) = parser_ctx(parser);
4373 if (!parse_function_body(parser, var))
4375 ast_delete(basetype);
4376 for (i = 0; i < vec_size(parser->gotos); ++i)
4377 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
4378 vec_free(parser->gotos);
4379 vec_free(parser->labels);
4382 ast_expression *cexp;
4385 cexp = parse_expression_leave(parser, true);
4390 cval = (ast_value*)cexp;
4391 if (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
4392 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
4395 if (opts.standard != COMPILER_GMQCC &&
4396 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
4397 qualifier != CV_VAR)
4399 var->cvq = CV_CONST;
4401 var->hasvalue = true;
4402 if (cval->expression.vtype == TYPE_STRING)
4403 var->constval.vstring = parser_strdup(cval->constval.vstring);
4404 else if (cval->expression.vtype == TYPE_FIELD)
4405 var->constval.vfield = cval;
4407 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
4412 shunt sy = { NULL, NULL };
4415 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
4416 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
4417 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
4418 if (!parser_sy_apply_operator(parser, &sy))
4421 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
4422 parseerror(parser, "internal error: leaked operands");
4423 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
4433 if (parser->tok == ',') {
4434 if (!parser_next(parser)) {
4435 parseerror(parser, "expected another variable");
4439 if (parser->tok != TOKEN_IDENT) {
4440 parseerror(parser, "expected another variable");
4443 var = ast_value_copy(basetype);
4445 ast_value_set_name(var, parser_tokval(parser));
4446 if (!parser_next(parser)) {
4447 parseerror(parser, "error parsing variable declaration");
4453 if (parser->tok != ';') {
4454 parseerror(parser, "missing semicolon after variables");
4458 if (!parser_next(parser)) {
4459 parseerror(parser, "parse error after variable declaration");
4463 ast_delete(basetype);
4467 if (cleanvar && var)
4469 ast_delete(basetype);
4473 ast_delete(basetype);
4474 if (cleanvar && var)
4476 if (me[0]) ast_member_delete(me[0]);
4477 if (me[1]) ast_member_delete(me[1]);
4478 if (me[2]) ast_member_delete(me[2]);
4482 static bool parser_global_statement(parser_t *parser)
4486 bool noreturn = false;
4487 ast_value *istype = NULL;
4489 if (parser->tok == TOKEN_IDENT)
4490 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
4492 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
4494 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false);
4496 else if (parse_var_qualifiers(parser, false, &cvq, &noref, &noreturn))
4498 if (cvq == CV_WRONG)
4500 return parse_variable(parser, NULL, true, cvq, NULL, noref, noreturn);
4502 else if (parser->tok == TOKEN_KEYWORD)
4504 if (!strcmp(parser_tokval(parser), "typedef")) {
4505 if (!parser_next(parser)) {
4506 parseerror(parser, "expected type definition after 'typedef'");
4509 return parse_typedef(parser);
4511 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
4514 else if (parser->tok == '#')
4516 return parse_pragma(parser);
4518 else if (parser->tok == '$')
4520 if (!parser_next(parser)) {
4521 parseerror(parser, "parse error");
4527 parseerror(parser, "unexpected token: %s", parser->lex->tok.value);
4533 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
4535 return util_crc16(old, str, strlen(str));
4538 static void progdefs_crc_file(const char *str)
4540 /* write to progdefs.h here */
4544 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
4546 old = progdefs_crc_sum(old, str);
4547 progdefs_crc_file(str);
4551 static void generate_checksum(parser_t *parser)
4553 uint16_t crc = 0xFFFF;
4557 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
4558 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
4560 progdefs_crc_file("\tint\tpad;\n");
4561 progdefs_crc_file("\tint\tofs_return[3];\n");
4562 progdefs_crc_file("\tint\tofs_parm0[3];\n");
4563 progdefs_crc_file("\tint\tofs_parm1[3];\n");
4564 progdefs_crc_file("\tint\tofs_parm2[3];\n");
4565 progdefs_crc_file("\tint\tofs_parm3[3];\n");
4566 progdefs_crc_file("\tint\tofs_parm4[3];\n");
4567 progdefs_crc_file("\tint\tofs_parm5[3];\n");
4568 progdefs_crc_file("\tint\tofs_parm6[3];\n");
4569 progdefs_crc_file("\tint\tofs_parm7[3];\n");
4571 for (i = 0; i < parser->crc_globals; ++i) {
4572 if (!ast_istype(parser->globals[i], ast_value))
4574 value = (ast_value*)(parser->globals[i]);
4575 switch (value->expression.vtype) {
4576 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
4577 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
4578 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
4579 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
4581 crc = progdefs_crc_both(crc, "\tint\t");
4584 crc = progdefs_crc_both(crc, value->name);
4585 crc = progdefs_crc_both(crc, ";\n");
4587 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
4588 for (i = 0; i < parser->crc_fields; ++i) {
4589 if (!ast_istype(parser->fields[i], ast_value))
4591 value = (ast_value*)(parser->fields[i]);
4592 switch (value->expression.next->expression.vtype) {
4593 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
4594 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
4595 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
4596 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
4598 crc = progdefs_crc_both(crc, "\tint\t");
4601 crc = progdefs_crc_both(crc, value->name);
4602 crc = progdefs_crc_both(crc, ";\n");
4604 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
4609 static parser_t *parser;
4615 parser = (parser_t*)mem_a(sizeof(parser_t));
4619 memset(parser, 0, sizeof(*parser));
4621 for (i = 0; i < operator_count; ++i) {
4622 if (operators[i].id == opid1('=')) {
4623 parser->assign_op = operators+i;
4627 if (!parser->assign_op) {
4628 printf("internal error: initializing parser: failed to find assign operator\n");
4633 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
4634 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
4635 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
4636 vec_push(parser->_blocktypedefs, 0);
4640 bool parser_compile()
4642 /* initial lexer/parser state */
4643 parser->lex->flags.noops = true;
4645 if (parser_next(parser))
4647 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
4649 if (!parser_global_statement(parser)) {
4650 if (parser->tok == TOKEN_EOF)
4651 parseerror(parser, "unexpected eof");
4652 else if (!parser->errors)
4653 parseerror(parser, "there have been errors, bailing out");
4654 lex_close(parser->lex);
4660 parseerror(parser, "parse error");
4661 lex_close(parser->lex);
4666 lex_close(parser->lex);
4669 return !parser->errors;
4672 bool parser_compile_file(const char *filename)
4674 parser->lex = lex_open(filename);
4676 con_err("failed to open file \"%s\"\n", filename);
4679 return parser_compile();
4682 bool parser_compile_string_len(const char *name, const char *str, size_t len)
4684 parser->lex = lex_open_string(str, len, name);
4686 con_err("failed to create lexer for string \"%s\"\n", name);
4689 return parser_compile();
4692 bool parser_compile_string(const char *name, const char *str)
4694 parser->lex = lex_open_string(str, strlen(str), name);
4696 con_err("failed to create lexer for string \"%s\"\n", name);
4699 return parser_compile();
4702 void parser_cleanup()
4705 for (i = 0; i < vec_size(parser->accessors); ++i) {
4706 ast_delete(parser->accessors[i]->constval.vfunc);
4707 parser->accessors[i]->constval.vfunc = NULL;
4708 ast_delete(parser->accessors[i]);
4710 for (i = 0; i < vec_size(parser->functions); ++i) {
4711 ast_delete(parser->functions[i]);
4713 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
4714 ast_delete(parser->imm_vector[i]);
4716 for (i = 0; i < vec_size(parser->imm_string); ++i) {
4717 ast_delete(parser->imm_string[i]);
4719 for (i = 0; i < vec_size(parser->imm_float); ++i) {
4720 ast_delete(parser->imm_float[i]);
4722 for (i = 0; i < vec_size(parser->fields); ++i) {
4723 ast_delete(parser->fields[i]);
4725 for (i = 0; i < vec_size(parser->globals); ++i) {
4726 ast_delete(parser->globals[i]);
4728 vec_free(parser->accessors);
4729 vec_free(parser->functions);
4730 vec_free(parser->imm_vector);
4731 vec_free(parser->imm_string);
4732 vec_free(parser->imm_float);
4733 vec_free(parser->globals);
4734 vec_free(parser->fields);
4736 for (i = 0; i < vec_size(parser->variables); ++i)
4737 util_htdel(parser->variables[i]);
4738 vec_free(parser->variables);
4739 vec_free(parser->_blocklocals);
4740 vec_free(parser->_locals);
4742 for (i = 0; i < vec_size(parser->_typedefs); ++i)
4743 ast_delete(parser->_typedefs[i]);
4744 vec_free(parser->_typedefs);
4745 for (i = 0; i < vec_size(parser->typedefs); ++i)
4746 util_htdel(parser->typedefs[i]);
4747 vec_free(parser->typedefs);
4748 vec_free(parser->_blocktypedefs);
4750 vec_free(parser->_block_ctx);
4752 vec_free(parser->labels);
4753 vec_free(parser->gotos);
4758 bool parser_finish(const char *output)
4764 if (!parser->errors)
4766 ir = ir_builder_new("gmqcc_out");
4768 con_out("failed to allocate builder\n");
4772 for (i = 0; i < vec_size(parser->fields); ++i) {
4775 if (!ast_istype(parser->fields[i], ast_value))
4777 field = (ast_value*)parser->fields[i];
4778 hasvalue = field->hasvalue;
4779 field->hasvalue = false;
4780 if (!ast_global_codegen((ast_value*)field, ir, true)) {
4781 con_out("failed to generate field %s\n", field->name);
4782 ir_builder_delete(ir);
4787 ast_expression *subtype;
4788 field->hasvalue = true;
4789 subtype = field->expression.next;
4790 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
4791 if (subtype->expression.vtype == TYPE_FIELD)
4792 ifld->fieldtype = subtype->expression.next->expression.vtype;
4793 else if (subtype->expression.vtype == TYPE_FUNCTION)
4794 ifld->outtype = subtype->expression.next->expression.vtype;
4795 (void)!ir_value_set_field(field->ir_v, ifld);
4798 for (i = 0; i < vec_size(parser->globals); ++i) {
4800 if (!ast_istype(parser->globals[i], ast_value))
4802 asvalue = (ast_value*)(parser->globals[i]);
4803 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
4804 retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
4805 "unused global: `%s`", asvalue->name);
4807 if (!ast_global_codegen(asvalue, ir, false)) {
4808 con_out("failed to generate global %s\n", asvalue->name);
4809 ir_builder_delete(ir);
4813 for (i = 0; i < vec_size(parser->imm_float); ++i) {
4814 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
4815 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
4816 ir_builder_delete(ir);
4820 for (i = 0; i < vec_size(parser->imm_string); ++i) {
4821 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
4822 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
4823 ir_builder_delete(ir);
4827 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
4828 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
4829 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
4830 ir_builder_delete(ir);
4834 for (i = 0; i < vec_size(parser->globals); ++i) {
4836 if (!ast_istype(parser->globals[i], ast_value))
4838 asvalue = (ast_value*)(parser->globals[i]);
4839 if (!ast_generate_accessors(asvalue, ir)) {
4840 ir_builder_delete(ir);
4844 for (i = 0; i < vec_size(parser->fields); ++i) {
4846 asvalue = (ast_value*)(parser->fields[i]->expression.next);
4848 if (!ast_istype((ast_expression*)asvalue, ast_value))
4850 if (asvalue->expression.vtype != TYPE_ARRAY)
4852 if (!ast_generate_accessors(asvalue, ir)) {
4853 ir_builder_delete(ir);
4857 for (i = 0; i < vec_size(parser->functions); ++i) {
4858 if (!ast_function_codegen(parser->functions[i], ir)) {
4859 con_out("failed to generate function %s\n", parser->functions[i]->name);
4860 ir_builder_delete(ir);
4865 ir_builder_dump(ir, con_out);
4866 for (i = 0; i < vec_size(parser->functions); ++i) {
4867 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
4868 con_out("failed to finalize function %s\n", parser->functions[i]->name);
4869 ir_builder_delete(ir);
4876 ir_builder_dump(ir, con_out);
4878 generate_checksum(parser);
4880 if (!ir_builder_generate(ir, output)) {
4881 con_out("*** failed to generate output file\n");
4882 ir_builder_delete(ir);
4887 ir_builder_delete(ir);
4891 con_out("*** there were compile errors\n");