5 * Permission is hereby granted, free of charge, to any person obtaining a copy of
6 * this software and associated documentation files (the "Software"), to deal in
7 * the Software without restriction, including without limitation the rights to
8 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
9 * of the Software, and to permit persons to whom the Software is furnished to do
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12 * The above copyright notice and this permission notice shall be included in all
13 * copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
29 /* beginning of locals */
30 #define PARSER_HT_LOCALS 2
32 #define PARSER_HT_SIZE 1024
33 #define TYPEDEF_HT_SIZE 16
35 enum parser_pot { POT_PAREN, POT_TERNARY1, POT_TERNARY2 };
40 ast_expression **globals;
41 ast_expression **fields;
42 ast_function **functions;
43 ast_value **imm_float;
44 ast_value **imm_string;
45 ast_value **imm_vector;
48 /* must be deleted first, they reference immediates and values */
49 ast_value **accessors;
51 ast_value *imm_float_zero;
52 ast_value *imm_float_one;
53 ast_value *imm_vector_zero;
58 ast_function *function;
60 /* All the labels the function defined...
61 * Should they be in ast_function instead?
66 const char **continues;
68 /* A list of hashtables for each scope */
74 /* not to be used directly, we use the hash table */
75 ast_expression **_locals;
77 ast_value **_typedefs;
78 size_t *_blocktypedefs;
81 /* we store the '=' operator info */
82 const oper_info *assign_op;
84 /* TYPE_FIELD -> parser_find_fields is used instead of find_var
85 * TODO: TYPE_VECTOR -> x, y and z are accepted in the gmqcc standard
86 * anything else: type error
90 /* Keep track of our ternary vs parenthesis nesting state.
91 * If we reach a 'comma' operator in a ternary without a paren,
92 * we shall trigger -Wternary-precedence.
100 static const ast_expression *intrinsic_debug_typestring = (ast_expression*)0x10;
102 static void parser_enterblock(parser_t *parser);
103 static bool parser_leaveblock(parser_t *parser);
104 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e);
105 static bool parse_typedef(parser_t *parser);
106 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref, bool noreturn, bool is_static);
107 static ast_block* parse_block(parser_t *parser);
108 static bool parse_block_into(parser_t *parser, ast_block *block);
109 static bool parse_statement_or_block(parser_t *parser, ast_expression **out);
110 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases);
111 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma);
112 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma);
114 static void parseerror(parser_t *parser, const char *fmt, ...)
118 vcompile_error(parser->lex->tok.ctx, fmt, ap);
122 /* returns true if it counts as an error */
123 static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
128 r = vcompile_warning(parser->lex->tok.ctx, warntype, fmt, ap);
133 static bool GMQCC_WARN genwarning(lex_ctx ctx, int warntype, const char *fmt, ...)
138 r = vcompile_warning(ctx, warntype, fmt, ap);
143 /**********************************************************************
144 * some maths used for constant folding
147 vector vec3_add(vector a, vector b)
156 vector vec3_sub(vector a, vector b)
165 qcfloat vec3_mulvv(vector a, vector b)
167 return (a.x * b.x + a.y * b.y + a.z * b.z);
170 vector vec3_mulvf(vector a, float b)
179 /**********************************************************************
183 bool parser_next(parser_t *parser)
185 /* lex_do kills the previous token */
186 parser->tok = lex_do(parser->lex);
187 if (parser->tok == TOKEN_EOF)
189 if (parser->tok >= TOKEN_ERROR) {
190 parseerror(parser, "lex error");
196 #define parser_tokval(p) ((p)->lex->tok.value)
197 #define parser_token(p) (&((p)->lex->tok))
198 #define parser_ctx(p) ((p)->lex->tok.ctx)
200 static ast_value* parser_const_float(parser_t *parser, double d)
204 for (i = 0; i < vec_size(parser->imm_float); ++i) {
205 const double compare = parser->imm_float[i]->constval.vfloat;
206 if (memcmp((const void*)&compare, (const void *)&d, sizeof(double)) == 0)
207 return parser->imm_float[i];
209 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_FLOAT);
211 out->hasvalue = true;
212 out->constval.vfloat = d;
213 vec_push(parser->imm_float, out);
217 static ast_value* parser_const_float_0(parser_t *parser)
219 if (!parser->imm_float_zero)
220 parser->imm_float_zero = parser_const_float(parser, 0);
221 return parser->imm_float_zero;
224 static ast_value* parser_const_float_1(parser_t *parser)
226 if (!parser->imm_float_one)
227 parser->imm_float_one = parser_const_float(parser, 1);
228 return parser->imm_float_one;
231 static char *parser_strdup(const char *str)
234 /* actually dup empty strings */
235 char *out = (char*)mem_a(1);
239 return util_strdup(str);
242 static ast_value* parser_const_string(parser_t *parser, const char *str, bool dotranslate)
246 for (i = 0; i < vec_size(parser->imm_string); ++i) {
247 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
248 return parser->imm_string[i];
252 snprintf(name, sizeof(name), "dotranslate_%lu", (unsigned long)(parser->translated++));
253 out = ast_value_new(parser_ctx(parser), name, TYPE_STRING);
255 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
257 out->hasvalue = true;
258 out->constval.vstring = parser_strdup(str);
259 vec_push(parser->imm_string, out);
263 static ast_value* parser_const_vector(parser_t *parser, vector v)
267 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
268 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
269 return parser->imm_vector[i];
271 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
273 out->hasvalue = true;
274 out->constval.vvec = v;
275 vec_push(parser->imm_vector, out);
279 static ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
285 return parser_const_vector(parser, v);
288 static ast_value* parser_const_vector_0(parser_t *parser)
290 if (!parser->imm_vector_zero)
291 parser->imm_vector_zero = parser_const_vector_f(parser, 0, 0, 0);
292 return parser->imm_vector_zero;
295 static ast_expression* parser_find_field(parser_t *parser, const char *name)
297 return ( ast_expression*)util_htget(parser->htfields, name);
300 static ast_expression* parser_find_global(parser_t *parser, const char *name)
302 return (ast_expression*)util_htget(parser->htglobals, name);
305 static ast_expression* parser_find_param(parser_t *parser, const char *name)
309 if (!parser->function)
311 fun = parser->function->vtype;
312 for (i = 0; i < vec_size(fun->expression.params); ++i) {
313 if (!strcmp(fun->expression.params[i]->name, name))
314 return (ast_expression*)(fun->expression.params[i]);
319 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
324 hash = util_hthash(parser->htglobals, name);
327 for (i = vec_size(parser->variables); i > upto;) {
329 if ( (e = (ast_expression*)util_htgeth(parser->variables[i], name, hash)) )
333 return parser_find_param(parser, name);
336 static ast_expression* parser_find_var(parser_t *parser, const char *name)
340 v = parser_find_local(parser, name, 0, &dummy);
341 if (!v) v = parser_find_global(parser, name);
345 static ast_value* parser_find_typedef(parser_t *parser, const char *name, size_t upto)
349 hash = util_hthash(parser->typedefs[0], name);
351 for (i = vec_size(parser->typedefs); i > upto;) {
353 if ( (e = (ast_value*)util_htgeth(parser->typedefs[i], name, hash)) )
361 size_t etype; /* 0 = expression, others are operators */
365 ast_block *block; /* for commas and function calls */
374 #define SY_PAREN_EXPR '('
375 #define SY_PAREN_FUNC 'f'
376 #define SY_PAREN_INDEX '['
377 #define SY_PAREN_TERNARY '?'
379 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
390 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
394 e.out = (ast_expression*)v;
401 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
403 e.etype = 1 + (op - operators);
412 static sy_elem syparen(lex_ctx ctx, int p, size_t off) {
424 # define DEBUGSHUNTDO(x) x
426 # define DEBUGSHUNTDO(x)
429 /* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
430 * so we need to rotate it to become ent.(foo[n]).
432 static bool rotate_entfield_array_index_nodes(ast_expression **out)
434 ast_array_index *index;
435 ast_entfield *entfield;
439 ast_expression *entity;
441 lex_ctx ctx = ast_ctx(*out);
443 if (!ast_istype(*out, ast_array_index))
445 index = (ast_array_index*)*out;
447 if (!ast_istype(index->array, ast_entfield))
449 entfield = (ast_entfield*)index->array;
451 if (!ast_istype(entfield->field, ast_value))
453 field = (ast_value*)entfield->field;
456 entity = entfield->entity;
460 index = ast_array_index_new(ctx, (ast_expression*)field, sub);
461 entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
462 *out = (ast_expression*)entfield;
467 static bool immediate_is_true(lex_ctx ctx, ast_value *v)
469 switch (v->expression.vtype) {
471 return !!v->constval.vfloat;
473 return !!v->constval.vint;
475 if (OPTS_FLAG(CORRECT_LOGIC))
476 return v->constval.vvec.x &&
477 v->constval.vvec.y &&
480 return !!(v->constval.vvec.x);
482 if (!v->constval.vstring)
484 if (v->constval.vstring && OPTS_FLAG(TRUE_EMPTY_STRINGS))
486 return !!v->constval.vstring[0];
488 compile_error(ctx, "internal error: immediate_is_true on invalid type");
489 return !!v->constval.vfunc;
493 static bool parser_sy_apply_operator(parser_t *parser, shunt *sy)
497 ast_expression *out = NULL;
498 ast_expression *exprs[3];
499 ast_block *blocks[3];
500 ast_value *asvalue[3];
501 ast_binstore *asbinstore;
502 size_t i, assignop, addop, subop;
503 qcint generated_op = 0;
508 if (!vec_size(sy->ops)) {
509 parseerror(parser, "internal error: missing operator");
513 if (vec_last(sy->ops).paren) {
514 parseerror(parser, "unmatched parenthesis");
518 op = &operators[vec_last(sy->ops).etype - 1];
519 ctx = vec_last(sy->ops).ctx;
521 DEBUGSHUNTDO(con_out("apply %s\n", op->op));
523 if (vec_size(sy->out) < op->operands) {
524 parseerror(parser, "internal error: not enough operands: %i (operator %s (%i))", vec_size(sy->out),
525 op->op, (int)op->id);
529 vec_shrinkby(sy->ops, 1);
531 /* op(:?) has no input and no output */
535 vec_shrinkby(sy->out, op->operands);
536 for (i = 0; i < op->operands; ++i) {
537 exprs[i] = sy->out[vec_size(sy->out)+i].out;
538 blocks[i] = sy->out[vec_size(sy->out)+i].block;
539 asvalue[i] = (ast_value*)exprs[i];
542 if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
543 parseerror(parser, "internal error: operator cannot be applied on empty blocks");
547 #define NotSameType(T) \
548 (exprs[0]->expression.vtype != exprs[1]->expression.vtype || \
549 exprs[0]->expression.vtype != T)
550 #define CanConstFold1(A) \
551 (ast_istype((A), ast_value) && ((ast_value*)(A))->hasvalue && (((ast_value*)(A))->cvq == CV_CONST) &&\
552 (A)->expression.vtype != TYPE_FUNCTION)
553 #define CanConstFold(A, B) \
554 (CanConstFold1(A) && CanConstFold1(B))
555 #define ConstV(i) (asvalue[(i)]->constval.vvec)
556 #define ConstF(i) (asvalue[(i)]->constval.vfloat)
557 #define ConstS(i) (asvalue[(i)]->constval.vstring)
561 parseerror(parser, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
565 if (exprs[0]->expression.vtype == TYPE_ENTITY) {
566 if (exprs[1]->expression.vtype != TYPE_FIELD) {
567 parseerror(parser, "type error: right hand of member-operand should be an entity-field");
570 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
572 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
573 parseerror(parser, "internal error: vector access is not supposed to be handled at this point");
577 parseerror(parser, "type error: member-of operator on something that is not an entity or vector");
583 if (exprs[0]->expression.vtype != TYPE_ARRAY &&
584 !(exprs[0]->expression.vtype == TYPE_FIELD &&
585 exprs[0]->expression.next->expression.vtype == TYPE_ARRAY))
587 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
588 parseerror(parser, "cannot index value of type %s", ty1);
591 if (exprs[1]->expression.vtype != TYPE_FLOAT) {
592 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
593 parseerror(parser, "index must be of type float, not %s", ty1);
596 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
597 if (rotate_entfield_array_index_nodes(&out))
600 /* This is not broken in fteqcc anymore */
601 if (opts.standard != COMPILER_GMQCC) {
602 /* this error doesn't need to make us bail out */
603 (void)!parsewarning(parser, WARN_EXTENSIONS,
604 "accessing array-field members of an entity without parenthesis\n"
605 " -> this is an extension from -std=gmqcc");
613 if (!ast_block_add_expr(blocks[0], exprs[1]))
616 blocks[0] = ast_block_new(ctx);
617 if (!ast_block_add_expr(blocks[0], exprs[0]) ||
618 !ast_block_add_expr(blocks[0], exprs[1]))
623 if (!ast_block_set_type(blocks[0], exprs[1]))
626 vec_push(sy->out, syblock(ctx, blocks[0]));
633 switch (exprs[0]->expression.vtype) {
635 if (CanConstFold1(exprs[0]))
636 out = (ast_expression*)parser_const_float(parser, -ConstF(0));
638 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
639 (ast_expression*)parser_const_float_0(parser),
643 if (CanConstFold1(exprs[0]))
644 out = (ast_expression*)parser_const_vector_f(parser,
645 -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
647 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
648 (ast_expression*)parser_const_vector_0(parser),
652 parseerror(parser, "invalid types used in expression: cannot negate type %s",
653 type_name[exprs[0]->expression.vtype]);
659 switch (exprs[0]->expression.vtype) {
661 if (CanConstFold1(exprs[0]))
662 out = (ast_expression*)parser_const_float(parser, !ConstF(0));
664 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
667 if (CanConstFold1(exprs[0]))
668 out = (ast_expression*)parser_const_float(parser,
669 (!ConstV(0).x && !ConstV(0).y && !ConstV(0).z));
671 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
674 if (CanConstFold1(exprs[0])) {
675 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
676 out = (ast_expression*)parser_const_float(parser, !ConstS(0));
678 out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
680 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
681 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
683 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
686 /* we don't constant-fold NOT for these types */
688 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
691 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
694 parseerror(parser, "invalid types used in expression: cannot logically negate type %s",
695 type_name[exprs[0]->expression.vtype]);
701 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
702 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
704 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
705 type_name[exprs[0]->expression.vtype],
706 type_name[exprs[1]->expression.vtype]);
709 switch (exprs[0]->expression.vtype) {
711 if (CanConstFold(exprs[0], exprs[1]))
713 out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
716 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
719 if (CanConstFold(exprs[0], exprs[1]))
720 out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
722 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
725 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
726 type_name[exprs[0]->expression.vtype],
727 type_name[exprs[1]->expression.vtype]);
732 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
733 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
735 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
736 type_name[exprs[1]->expression.vtype],
737 type_name[exprs[0]->expression.vtype]);
740 switch (exprs[0]->expression.vtype) {
742 if (CanConstFold(exprs[0], exprs[1]))
743 out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
745 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
748 if (CanConstFold(exprs[0], exprs[1]))
749 out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
751 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
754 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
755 type_name[exprs[1]->expression.vtype],
756 type_name[exprs[0]->expression.vtype]);
761 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
762 exprs[0]->expression.vtype != TYPE_VECTOR &&
763 exprs[0]->expression.vtype != TYPE_FLOAT &&
764 exprs[1]->expression.vtype != TYPE_VECTOR &&
765 exprs[1]->expression.vtype != TYPE_FLOAT)
767 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
768 type_name[exprs[1]->expression.vtype],
769 type_name[exprs[0]->expression.vtype]);
772 switch (exprs[0]->expression.vtype) {
774 if (exprs[1]->expression.vtype == TYPE_VECTOR)
776 if (CanConstFold(exprs[0], exprs[1]))
777 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
779 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
783 if (CanConstFold(exprs[0], exprs[1]))
784 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
786 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
790 if (exprs[1]->expression.vtype == TYPE_FLOAT)
792 if (CanConstFold(exprs[0], exprs[1]))
793 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
795 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
799 if (CanConstFold(exprs[0], exprs[1]))
800 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
802 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
806 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
807 type_name[exprs[1]->expression.vtype],
808 type_name[exprs[0]->expression.vtype]);
813 if (NotSameType(TYPE_FLOAT)) {
814 parseerror(parser, "invalid types used in expression: cannot divide types %s and %s",
815 type_name[exprs[0]->expression.vtype],
816 type_name[exprs[1]->expression.vtype]);
819 if (CanConstFold(exprs[0], exprs[1]))
820 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
822 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
826 parseerror(parser, "qc does not have a modulo operator");
830 if (NotSameType(TYPE_FLOAT)) {
831 parseerror(parser, "invalid types used in expression: cannot perform bit operations between types %s and %s",
832 type_name[exprs[0]->expression.vtype],
833 type_name[exprs[1]->expression.vtype]);
836 if (CanConstFold(exprs[0], exprs[1]))
837 out = (ast_expression*)parser_const_float(parser,
838 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
839 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
841 out = (ast_expression*)ast_binary_new(ctx,
842 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
846 parseerror(parser, "TODO: bitxor");
851 case opid3('<','<','='):
852 case opid3('>','>','='):
853 parseerror(parser, "TODO: shifts");
857 generated_op += 1; /* INSTR_OR */
859 generated_op += INSTR_AND;
861 if (NotSameType(TYPE_FLOAT)) {
862 parseerror(parser, "invalid types used in expression: cannot perform logical operations between types %s and %s",
863 type_name[exprs[0]->expression.vtype],
864 type_name[exprs[1]->expression.vtype]);
865 parseerror(parser, "TODO: logical ops for arbitrary types using INSTR_NOT");
866 parseerror(parser, "TODO: optional early out");
870 if (CanConstFold(exprs[0], exprs[1]))
872 if (OPTS_FLAG(PERL_LOGIC)) {
873 if (immediate_is_true(ctx, asvalue[0]))
877 out = (ast_expression*)parser_const_float(parser,
878 ( (generated_op == INSTR_OR)
879 ? (immediate_is_true(ctx, asvalue[0]) || immediate_is_true(ctx, asvalue[1]))
880 : (immediate_is_true(ctx, asvalue[0]) && immediate_is_true(ctx, asvalue[1])) )
885 if (OPTS_FLAG(PERL_LOGIC) && !ast_compare_type(exprs[0], exprs[1])) {
886 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
887 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
888 parseerror(parser, "invalid types for logical operation with -fperl-logic: %s and %s", ty1, ty2);
891 for (i = 0; i < 2; ++i) {
892 if (OPTS_FLAG(CORRECT_LOGIC) && exprs[i]->expression.vtype == TYPE_VECTOR) {
893 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[i]);
895 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
897 exprs[i] = out; out = NULL;
898 if (OPTS_FLAG(PERL_LOGIC)) {
899 /* here we want to keep the right expressions' type */
903 else if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && exprs[i]->expression.vtype == TYPE_STRING) {
904 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[i]);
906 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
908 exprs[i] = out; out = NULL;
909 if (OPTS_FLAG(PERL_LOGIC)) {
910 /* here we want to keep the right expressions' type */
915 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
920 if (vec_last(parser->pot) != POT_TERNARY2) {
921 parseerror(parser, "mismatched parenthesis/ternary");
924 vec_pop(parser->pot);
925 if (exprs[1]->expression.vtype != exprs[2]->expression.vtype) {
926 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
927 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
928 parseerror(parser, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
931 if (CanConstFold1(exprs[0]))
932 out = (ConstF(0) ? exprs[1] : exprs[2]);
934 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
938 generated_op += 1; /* INSTR_GT */
940 generated_op += 1; /* INSTR_LT */
941 case opid2('>', '='):
942 generated_op += 1; /* INSTR_GE */
943 case opid2('<', '='):
944 generated_op += INSTR_LE;
945 if (NotSameType(TYPE_FLOAT)) {
946 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
947 type_name[exprs[0]->expression.vtype],
948 type_name[exprs[1]->expression.vtype]);
951 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
953 case opid2('!', '='):
954 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
955 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
956 type_name[exprs[0]->expression.vtype],
957 type_name[exprs[1]->expression.vtype]);
960 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
962 case opid2('=', '='):
963 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
964 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
965 type_name[exprs[0]->expression.vtype],
966 type_name[exprs[1]->expression.vtype]);
969 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
973 if (ast_istype(exprs[0], ast_entfield)) {
974 ast_expression *field = ((ast_entfield*)exprs[0])->field;
975 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
976 exprs[0]->expression.vtype == TYPE_FIELD &&
977 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
979 assignop = type_storep_instr[TYPE_VECTOR];
982 assignop = type_storep_instr[exprs[0]->expression.vtype];
983 if (assignop == AINSTR_END ||
984 !ast_compare_type(field->expression.next, exprs[1]))
986 ast_type_to_string(field->expression.next, ty1, sizeof(ty1));
987 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
988 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
989 field->expression.next->expression.vtype == TYPE_FUNCTION &&
990 exprs[1]->expression.vtype == TYPE_FUNCTION)
992 (void)!parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
993 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
996 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1001 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1002 exprs[0]->expression.vtype == TYPE_FIELD &&
1003 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
1005 assignop = type_store_instr[TYPE_VECTOR];
1008 assignop = type_store_instr[exprs[0]->expression.vtype];
1011 if (assignop == AINSTR_END) {
1012 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1013 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1014 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1016 else if (!ast_compare_type(exprs[0], exprs[1])) {
1017 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1018 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1019 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1020 exprs[0]->expression.vtype == TYPE_FUNCTION &&
1021 exprs[1]->expression.vtype == TYPE_FUNCTION)
1023 (void)!parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
1024 "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 (void)!ast_call_check_types(call);
1302 parseerror(parser, "invalid function call");
1306 /* overwrite fid, the function, with a call */
1307 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1309 if (fun->expression.vtype != TYPE_FUNCTION) {
1310 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
1314 if (!fun->expression.next) {
1315 parseerror(parser, "could not determine function return type");
1318 if (vec_size(fun->expression.params) != paramcount &&
1319 !((fun->expression.flags & AST_FLAG_VARIADIC) &&
1320 vec_size(fun->expression.params) < paramcount))
1323 const char *fewmany = (vec_size(fun->expression.params) > paramcount) ? "few" : "many";
1325 fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1326 if (opts.standard == COMPILER_GMQCC)
1329 parseerror(parser, "too %s parameters for call to %s: expected %i, got %i\n"
1330 " -> `%s` has been declared here: %s:%i",
1331 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1332 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1334 parseerror(parser, "too %s parameters for function call: expected %i, got %i\n"
1335 " -> it has been declared here: %s:%i",
1336 fewmany, (int)vec_size(fun->expression.params), (int)paramcount,
1337 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1343 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1344 "too %s parameters for call to %s: expected %i, got %i\n"
1345 " -> `%s` has been declared here: %s:%i",
1346 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1347 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1349 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1350 "too %s parameters for function call: expected %i, got %i\n"
1351 " -> it has been declared here: %s:%i",
1352 fewmany, (int)vec_size(fun->expression.params), (int)paramcount,
1353 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1361 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
1363 if (!vec_size(sy->ops)) {
1364 parseerror(parser, "unmatched closing paren");
1367 /* this would for bit a + (x) because there are no operators inside (x)
1368 if (sy->ops[vec_size(sy->ops)-1].paren == 1) {
1369 parseerror(parser, "empty parenthesis expression");
1373 while (vec_size(sy->ops)) {
1374 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_FUNC) {
1375 if (!parser_close_call(parser, sy))
1379 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_EXPR) {
1380 vec_shrinkby(sy->ops, 1);
1381 return !functions_only;
1383 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_INDEX) {
1386 /* pop off the parenthesis */
1387 vec_shrinkby(sy->ops, 1);
1388 /* then apply the index operator */
1389 if (!parser_sy_apply_operator(parser, sy))
1393 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_TERNARY) {
1396 if (vec_last(parser->pot) != POT_TERNARY1) {
1397 parseerror(parser, "mismatched colon in ternary expression (missing closing paren?)");
1400 vec_last(parser->pot) = POT_TERNARY2;
1401 /* pop off the parenthesis */
1402 vec_shrinkby(sy->ops, 1);
1405 if (!parser_sy_apply_operator(parser, sy))
1411 static void parser_reclassify_token(parser_t *parser)
1414 for (i = 0; i < operator_count; ++i) {
1415 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1416 parser->tok = TOKEN_OPERATOR;
1422 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma)
1424 ast_expression *expr = NULL;
1426 bool wantop = false;
1427 bool gotmemberof = false;
1429 /* count the parens because an if starts with one, so the
1430 * end of a condition is an unmatched closing paren
1438 parser->lex->flags.noops = false;
1440 parser_reclassify_token(parser);
1445 gotmemberof = false;
1447 parser->memberof = 0;
1449 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1450 parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "_"))
1452 /* a translatable string */
1456 parseerror(parser, "expected operator or end of statement, got constant");
1460 parser->lex->flags.noops = true;
1461 if (!parser_next(parser) || parser->tok != '(') {
1462 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1465 parser->lex->flags.noops = false;
1466 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1467 parseerror(parser, "expected a constant string in translatable-string extension");
1470 val = parser_const_string(parser, parser_tokval(parser), true);
1474 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1475 DEBUGSHUNTDO(con_out("push string\n"));
1477 if (!parser_next(parser) || parser->tok != ')') {
1478 parseerror(parser, "expected closing paren after translatable string");
1482 else if (parser->tok == TOKEN_IDENT)
1484 ast_expression *var;
1486 parseerror(parser, "expected operator or end of statement");
1491 if (opts.standard == COMPILER_GMQCC)
1493 if (parser->memberof == TYPE_ENTITY) {
1494 /* still get vars first since there could be a fieldpointer */
1495 var = parser_find_var(parser, parser_tokval(parser));
1497 var = parser_find_field(parser, parser_tokval(parser));
1499 else if (parser->memberof == TYPE_VECTOR)
1501 parseerror(parser, "TODO: implement effective vector member access");
1504 else if (parser->memberof) {
1505 parseerror(parser, "namespace for member not found");
1509 var = parser_find_var(parser, parser_tokval(parser));
1511 var = parser_find_var(parser, parser_tokval(parser));
1513 var = parser_find_field(parser, parser_tokval(parser));
1517 if (!strcmp(parser_tokval(parser), "__builtin_debug_typestring")) {
1518 var = (ast_expression*)intrinsic_debug_typestring;
1523 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1529 if (ast_istype(var, ast_value)) {
1530 ((ast_value*)var)->uses++;
1532 else if (ast_istype(var, ast_member)) {
1533 ast_member *mem = (ast_member*)var;
1534 if (ast_istype(mem->owner, ast_value))
1535 ((ast_value*)(mem->owner))->uses++;
1538 vec_push(sy.out, syexp(parser_ctx(parser), var));
1539 DEBUGSHUNTDO(con_out("push %s\n", parser_tokval(parser)));
1541 else if (parser->tok == TOKEN_FLOATCONST) {
1544 parseerror(parser, "expected operator or end of statement, got constant");
1548 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1551 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1552 DEBUGSHUNTDO(con_out("push %g\n", parser_token(parser)->constval.f));
1554 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1557 parseerror(parser, "expected operator or end of statement, got constant");
1561 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1564 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1565 DEBUGSHUNTDO(con_out("push %i\n", parser_token(parser)->constval.i));
1567 else if (parser->tok == TOKEN_STRINGCONST) {
1570 parseerror(parser, "expected operator or end of statement, got constant");
1574 val = parser_const_string(parser, parser_tokval(parser), false);
1577 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1578 DEBUGSHUNTDO(con_out("push string\n"));
1580 else if (parser->tok == TOKEN_VECTORCONST) {
1583 parseerror(parser, "expected operator or end of statement, got constant");
1587 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1590 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1591 DEBUGSHUNTDO(con_out("push '%g %g %g'\n",
1592 parser_token(parser)->constval.v.x,
1593 parser_token(parser)->constval.v.y,
1594 parser_token(parser)->constval.v.z));
1596 else if (parser->tok == '(') {
1597 parseerror(parser, "internal error: '(' should be classified as operator");
1600 else if (parser->tok == '[') {
1601 parseerror(parser, "internal error: '[' should be classified as operator");
1604 else if (parser->tok == ')') {
1606 DEBUGSHUNTDO(con_out("do[op] )\n"));
1610 /* we do expect an operator next */
1611 /* closing an opening paren */
1612 if (!parser_close_paren(parser, &sy, false))
1614 if (vec_last(parser->pot) != POT_PAREN) {
1615 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1618 vec_pop(parser->pot);
1620 DEBUGSHUNTDO(con_out("do[nop] )\n"));
1624 /* allowed for function calls */
1625 if (!parser_close_paren(parser, &sy, true))
1627 if (vec_last(parser->pot) != POT_PAREN) {
1628 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1631 vec_pop(parser->pot);
1635 else if (parser->tok == ']') {
1637 parseerror(parser, "operand expected");
1641 if (!parser_close_paren(parser, &sy, false))
1643 if (vec_last(parser->pot) != POT_PAREN) {
1644 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1647 vec_pop(parser->pot);
1650 else if (parser->tok == TOKEN_TYPENAME) {
1651 parseerror(parser, "unexpected typename");
1654 else if (parser->tok != TOKEN_OPERATOR) {
1656 parseerror(parser, "expected operator or end of statement");
1663 /* classify the operator */
1664 const oper_info *op;
1665 const oper_info *olast = NULL;
1667 for (o = 0; o < operator_count; ++o) {
1668 if ((!(operators[o].flags & OP_PREFIX) == wantop) &&
1669 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1670 !strcmp(parser_tokval(parser), operators[o].op))
1675 if (o == operator_count) {
1676 /* no operator found... must be the end of the statement */
1679 /* found an operator */
1682 /* when declaring variables, a comma starts a new variable */
1683 if (op->id == opid1(',') && !parens && stopatcomma) {
1684 /* fixup the token */
1689 /* a colon without a pervious question mark cannot be a ternary */
1690 if (!ternaries && op->id == opid2(':','?')) {
1695 if (op->id == opid1(',')) {
1696 if (vec_size(parser->pot) && vec_last(parser->pot) == POT_TERNARY2) {
1697 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
1701 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1702 olast = &operators[vec_last(sy.ops).etype-1];
1705 (op->prec < olast->prec) ||
1706 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1708 if (!parser_sy_apply_operator(parser, &sy))
1710 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1711 olast = &operators[vec_last(sy.ops).etype-1];
1716 if (op->id == opid1('.') && opts.standard == COMPILER_GMQCC) {
1717 /* for gmqcc standard: open up the namespace of the previous type */
1718 ast_expression *prevex = vec_last(sy.out).out;
1720 parseerror(parser, "unexpected member operator");
1723 if (prevex->expression.vtype == TYPE_ENTITY)
1724 parser->memberof = TYPE_ENTITY;
1725 else if (prevex->expression.vtype == TYPE_VECTOR)
1726 parser->memberof = TYPE_VECTOR;
1728 parseerror(parser, "type error: type has no members");
1734 if (op->id == opid1('(')) {
1736 size_t sycount = vec_size(sy.out);
1737 DEBUGSHUNTDO(con_out("push [op] (\n"));
1738 ++parens; vec_push(parser->pot, POT_PAREN);
1739 /* we expected an operator, this is the function-call operator */
1740 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_FUNC, sycount-1));
1742 ++parens; vec_push(parser->pot, POT_PAREN);
1743 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_EXPR, 0));
1744 DEBUGSHUNTDO(con_out("push [nop] (\n"));
1747 } else if (op->id == opid1('[')) {
1749 parseerror(parser, "unexpected array subscript");
1752 ++parens; vec_push(parser->pot, POT_PAREN);
1753 /* push both the operator and the paren, this makes life easier */
1754 vec_push(sy.ops, syop(parser_ctx(parser), op));
1755 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_INDEX, 0));
1757 } else if (op->id == opid2('?',':')) {
1758 vec_push(sy.ops, syop(parser_ctx(parser), op));
1759 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_TERNARY, 0));
1762 vec_push(parser->pot, POT_TERNARY1);
1763 } else if (op->id == opid2(':','?')) {
1764 if (!vec_size(parser->pot)) {
1765 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1768 if (vec_last(parser->pot) != POT_TERNARY1) {
1769 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1772 if (!parser_close_paren(parser, &sy, false))
1774 vec_push(sy.ops, syop(parser_ctx(parser), op));
1778 DEBUGSHUNTDO(con_out("push operator %s\n", op->op));
1779 vec_push(sy.ops, syop(parser_ctx(parser), op));
1780 wantop = !!(op->flags & OP_SUFFIX);
1783 if (!parser_next(parser)) {
1786 if (parser->tok == ';' ||
1787 (!parens && parser->tok == ']'))
1793 while (vec_size(sy.ops)) {
1794 if (!parser_sy_apply_operator(parser, &sy))
1798 parser->lex->flags.noops = true;
1799 if (!vec_size(sy.out)) {
1800 parseerror(parser, "empty expression");
1803 expr = sy.out[0].out;
1806 DEBUGSHUNTDO(con_out("shunt done\n"));
1807 if (vec_size(parser->pot)) {
1808 parseerror(parser, "internal error: vec_size(parser->pot) = %lu", (unsigned long)vec_size(parser->pot));
1811 vec_free(parser->pot);
1815 parser->lex->flags.noops = true;
1821 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma)
1823 ast_expression *e = parse_expression_leave(parser, stopatcomma);
1826 if (!parser_next(parser)) {
1833 static void parser_enterblock(parser_t *parser)
1835 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
1836 vec_push(parser->_blocklocals, vec_size(parser->_locals));
1837 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
1838 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
1839 vec_push(parser->_block_ctx, parser_ctx(parser));
1842 static bool parser_leaveblock(parser_t *parser)
1845 size_t locals, typedefs;
1847 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
1848 parseerror(parser, "internal error: parser_leaveblock with no block");
1852 util_htdel(vec_last(parser->variables));
1853 vec_pop(parser->variables);
1854 if (!vec_size(parser->_blocklocals)) {
1855 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
1859 locals = vec_last(parser->_blocklocals);
1860 vec_pop(parser->_blocklocals);
1861 while (vec_size(parser->_locals) != locals) {
1862 ast_expression *e = vec_last(parser->_locals);
1863 ast_value *v = (ast_value*)e;
1864 vec_pop(parser->_locals);
1865 if (ast_istype(e, ast_value) && !v->uses) {
1866 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name))
1871 typedefs = vec_last(parser->_blocktypedefs);
1872 while (vec_size(parser->_typedefs) != typedefs) {
1873 ast_delete(vec_last(parser->_typedefs));
1874 vec_pop(parser->_typedefs);
1876 util_htdel(vec_last(parser->typedefs));
1877 vec_pop(parser->typedefs);
1879 vec_pop(parser->_block_ctx);
1883 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
1885 vec_push(parser->_locals, e);
1886 util_htset(vec_last(parser->variables), name, (void*)e);
1889 static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
1893 ast_expression *prev;
1895 if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->expression.vtype == TYPE_STRING)
1898 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
1901 parseerror(parser, "internal error: failed to process condition");
1906 else if (OPTS_FLAG(CORRECT_LOGIC) && cond->expression.vtype == TYPE_VECTOR)
1908 /* vector types need to be cast to true booleans */
1909 ast_binary *bin = (ast_binary*)cond;
1910 if (!OPTS_FLAG(PERL_LOGIC) || !ast_istype(cond, ast_binary) || !(bin->op == INSTR_AND || bin->op == INSTR_OR))
1912 /* in perl-logic, AND and OR take care of the -fcorrect-logic */
1914 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_V, cond);
1917 parseerror(parser, "internal error: failed to process condition");
1924 unary = (ast_unary*)cond;
1925 while (ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F)
1927 cond = unary->operand;
1928 unary->operand = NULL;
1931 unary = (ast_unary*)cond;
1935 parseerror(parser, "internal error: failed to process condition");
1937 if (ifnot) *_ifnot = !*_ifnot;
1941 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
1944 ast_expression *cond, *ontrue = NULL, *onfalse = NULL;
1947 lex_ctx ctx = parser_ctx(parser);
1949 (void)block; /* not touching */
1951 /* skip the 'if', parse an optional 'not' and check for an opening paren */
1952 if (!parser_next(parser)) {
1953 parseerror(parser, "expected condition or 'not'");
1956 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
1958 if (!parser_next(parser)) {
1959 parseerror(parser, "expected condition in parenthesis");
1963 if (parser->tok != '(') {
1964 parseerror(parser, "expected 'if' condition in parenthesis");
1967 /* parse into the expression */
1968 if (!parser_next(parser)) {
1969 parseerror(parser, "expected 'if' condition after opening paren");
1972 /* parse the condition */
1973 cond = parse_expression_leave(parser, false);
1977 if (parser->tok != ')') {
1978 parseerror(parser, "expected closing paren after 'if' condition");
1982 /* parse into the 'then' branch */
1983 if (!parser_next(parser)) {
1984 parseerror(parser, "expected statement for on-true branch of 'if'");
1988 if (!parse_statement_or_block(parser, &ontrue)) {
1992 /* check for an else */
1993 if (!strcmp(parser_tokval(parser), "else")) {
1994 /* parse into the 'else' branch */
1995 if (!parser_next(parser)) {
1996 parseerror(parser, "expected on-false branch after 'else'");
2001 if (!parse_statement_or_block(parser, &onfalse)) {
2008 cond = process_condition(parser, cond, &ifnot);
2010 if (ontrue) ast_delete(ontrue);
2011 if (onfalse) ast_delete(onfalse);
2016 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
2018 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
2019 *out = (ast_expression*)ifthen;
2023 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out);
2024 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
2029 /* skip the 'while' and get the body */
2030 if (!parser_next(parser)) {
2031 if (OPTS_FLAG(LOOP_LABELS))
2032 parseerror(parser, "expected loop label or 'while' condition in parenthesis");
2034 parseerror(parser, "expected 'while' condition in parenthesis");
2038 if (parser->tok == ':') {
2039 if (!OPTS_FLAG(LOOP_LABELS))
2040 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2041 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2042 parseerror(parser, "expected loop label");
2045 label = util_strdup(parser_tokval(parser));
2046 if (!parser_next(parser)) {
2048 parseerror(parser, "expected 'while' condition in parenthesis");
2053 if (parser->tok != '(') {
2054 parseerror(parser, "expected 'while' condition in parenthesis");
2058 vec_push(parser->breaks, label);
2059 vec_push(parser->continues, label);
2061 rv = parse_while_go(parser, block, out);
2064 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2065 parseerror(parser, "internal error: label stack corrupted");
2071 vec_pop(parser->breaks);
2072 vec_pop(parser->continues);
2077 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out)
2080 ast_expression *cond, *ontrue;
2084 lex_ctx ctx = parser_ctx(parser);
2086 (void)block; /* not touching */
2088 /* skip the 'while' and check for opening paren */
2089 if (!parser_next(parser) || parser->tok != '(') {
2090 parseerror(parser, "expected 'while' condition in parenthesis");
2093 /* parse into the expression */
2094 if (!parser_next(parser)) {
2095 parseerror(parser, "expected 'while' condition after opening paren");
2098 /* parse the condition */
2099 cond = parse_expression_leave(parser, false);
2103 if (parser->tok != ')') {
2104 parseerror(parser, "expected closing paren after 'while' condition");
2108 /* parse into the 'then' branch */
2109 if (!parser_next(parser)) {
2110 parseerror(parser, "expected while-loop body");
2114 if (!parse_statement_or_block(parser, &ontrue)) {
2119 cond = process_condition(parser, cond, &ifnot);
2124 aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue);
2125 *out = (ast_expression*)aloop;
2129 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out);
2130 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2135 /* skip the 'do' and get the body */
2136 if (!parser_next(parser)) {
2137 if (OPTS_FLAG(LOOP_LABELS))
2138 parseerror(parser, "expected loop label or body");
2140 parseerror(parser, "expected loop body");
2144 if (parser->tok == ':') {
2145 if (!OPTS_FLAG(LOOP_LABELS))
2146 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2147 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2148 parseerror(parser, "expected loop label");
2151 label = util_strdup(parser_tokval(parser));
2152 if (!parser_next(parser)) {
2154 parseerror(parser, "expected loop body");
2159 vec_push(parser->breaks, label);
2160 vec_push(parser->continues, label);
2162 rv = parse_dowhile_go(parser, block, out);
2165 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2166 parseerror(parser, "internal error: label stack corrupted");
2172 vec_pop(parser->breaks);
2173 vec_pop(parser->continues);
2178 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out)
2181 ast_expression *cond, *ontrue;
2185 lex_ctx ctx = parser_ctx(parser);
2187 (void)block; /* not touching */
2189 if (!parse_statement_or_block(parser, &ontrue))
2192 /* expect the "while" */
2193 if (parser->tok != TOKEN_KEYWORD ||
2194 strcmp(parser_tokval(parser), "while"))
2196 parseerror(parser, "expected 'while' and condition");
2201 /* skip the 'while' and check for opening paren */
2202 if (!parser_next(parser) || parser->tok != '(') {
2203 parseerror(parser, "expected 'while' condition in parenthesis");
2207 /* parse into the expression */
2208 if (!parser_next(parser)) {
2209 parseerror(parser, "expected 'while' condition after opening paren");
2213 /* parse the condition */
2214 cond = parse_expression_leave(parser, false);
2218 if (parser->tok != ')') {
2219 parseerror(parser, "expected closing paren after 'while' condition");
2225 if (!parser_next(parser) || parser->tok != ';') {
2226 parseerror(parser, "expected semicolon after condition");
2232 if (!parser_next(parser)) {
2233 parseerror(parser, "parse error");
2239 cond = process_condition(parser, cond, &ifnot);
2244 aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue);
2245 *out = (ast_expression*)aloop;
2249 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out);
2250 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2255 /* skip the 'for' and check for opening paren */
2256 if (!parser_next(parser)) {
2257 if (OPTS_FLAG(LOOP_LABELS))
2258 parseerror(parser, "expected loop label or 'for' expressions in parenthesis");
2260 parseerror(parser, "expected 'for' expressions in parenthesis");
2264 if (parser->tok == ':') {
2265 if (!OPTS_FLAG(LOOP_LABELS))
2266 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2267 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2268 parseerror(parser, "expected loop label");
2271 label = util_strdup(parser_tokval(parser));
2272 if (!parser_next(parser)) {
2274 parseerror(parser, "expected 'for' expressions in parenthesis");
2279 if (parser->tok != '(') {
2280 parseerror(parser, "expected 'for' expressions in parenthesis");
2284 vec_push(parser->breaks, label);
2285 vec_push(parser->continues, label);
2287 rv = parse_for_go(parser, block, out);
2290 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2291 parseerror(parser, "internal error: label stack corrupted");
2297 vec_pop(parser->breaks);
2298 vec_pop(parser->continues);
2302 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out)
2305 ast_expression *initexpr, *cond, *increment, *ontrue;
2311 lex_ctx ctx = parser_ctx(parser);
2313 parser_enterblock(parser);
2320 /* parse into the expression */
2321 if (!parser_next(parser)) {
2322 parseerror(parser, "expected 'for' initializer after opening paren");
2327 if (parser->tok == TOKEN_IDENT)
2328 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2330 if (typevar || parser->tok == TOKEN_TYPENAME) {
2331 if (opts.standard != COMPILER_GMQCC) {
2332 if (parsewarning(parser, WARN_EXTENSIONS,
2333 "current standard does not allow variable declarations in for-loop initializers"))
2336 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false, false))
2339 else if (parser->tok != ';')
2341 initexpr = parse_expression_leave(parser, false);
2346 /* move on to condition */
2347 if (parser->tok != ';') {
2348 parseerror(parser, "expected semicolon after for-loop initializer");
2351 if (!parser_next(parser)) {
2352 parseerror(parser, "expected for-loop condition");
2356 /* parse the condition */
2357 if (parser->tok != ';') {
2358 cond = parse_expression_leave(parser, false);
2363 /* move on to incrementor */
2364 if (parser->tok != ';') {
2365 parseerror(parser, "expected semicolon after for-loop initializer");
2368 if (!parser_next(parser)) {
2369 parseerror(parser, "expected for-loop condition");
2373 /* parse the incrementor */
2374 if (parser->tok != ')') {
2375 increment = parse_expression_leave(parser, false);
2378 if (!ast_side_effects(increment)) {
2379 if (genwarning(ast_ctx(increment), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2385 if (parser->tok != ')') {
2386 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2389 /* parse into the 'then' branch */
2390 if (!parser_next(parser)) {
2391 parseerror(parser, "expected for-loop body");
2394 if (!parse_statement_or_block(parser, &ontrue))
2398 cond = process_condition(parser, cond, &ifnot);
2402 aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue);
2403 *out = (ast_expression*)aloop;
2405 if (!parser_leaveblock(parser))
2409 if (initexpr) ast_delete(initexpr);
2410 if (cond) ast_delete(cond);
2411 if (increment) ast_delete(increment);
2412 (void)!parser_leaveblock(parser);
2416 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2418 ast_expression *exp = NULL;
2419 ast_return *ret = NULL;
2420 ast_value *expected = parser->function->vtype;
2422 lex_ctx ctx = parser_ctx(parser);
2424 (void)block; /* not touching */
2426 if (!parser_next(parser)) {
2427 parseerror(parser, "expected return expression");
2431 if (parser->tok != ';') {
2432 exp = parse_expression(parser, false);
2436 if (exp->expression.vtype != expected->expression.next->expression.vtype) {
2437 parseerror(parser, "return with invalid expression");
2440 ret = ast_return_new(ctx, exp);
2446 if (!parser_next(parser))
2447 parseerror(parser, "parse error");
2448 if (expected->expression.next->expression.vtype != TYPE_VOID) {
2449 if (opts.standard != COMPILER_GMQCC)
2450 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2452 parseerror(parser, "return without value");
2454 ret = ast_return_new(ctx, NULL);
2456 *out = (ast_expression*)ret;
2460 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2463 unsigned int levels = 0;
2464 lex_ctx ctx = parser_ctx(parser);
2465 const char **loops = (is_continue ? parser->continues : parser->breaks);
2467 (void)block; /* not touching */
2468 if (!parser_next(parser)) {
2469 parseerror(parser, "expected semicolon or loop label");
2473 if (parser->tok == TOKEN_IDENT) {
2474 if (!OPTS_FLAG(LOOP_LABELS))
2475 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2476 i = vec_size(loops);
2478 if (loops[i] && !strcmp(loops[i], parser_tokval(parser)))
2481 parseerror(parser, "no such loop to %s: `%s`",
2482 (is_continue ? "continue" : "break out of"),
2483 parser_tokval(parser));
2488 if (!parser_next(parser)) {
2489 parseerror(parser, "expected semicolon");
2494 if (parser->tok != ';') {
2495 parseerror(parser, "expected semicolon");
2499 if (!parser_next(parser))
2500 parseerror(parser, "parse error");
2502 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue, levels);
2506 /* returns true when it was a variable qualifier, false otherwise!
2507 * on error, cvq is set to CV_WRONG
2509 static bool parse_var_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *noreturn, bool *is_static)
2511 bool had_const = false;
2512 bool had_var = false;
2513 bool had_noref = false;
2514 bool had_noreturn = false;
2515 bool had_attrib = false;
2516 bool had_static = false;
2520 if (parser->tok == TOKEN_ATTRIBUTE_OPEN) {
2522 /* parse an attribute */
2523 if (!parser_next(parser)) {
2524 parseerror(parser, "expected attribute after `[[`");
2528 if (!strcmp(parser_tokval(parser), "noreturn")) {
2529 had_noreturn = true;
2530 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2531 parseerror(parser, "`noreturn` attribute has no parameters, expected `]]`");
2536 else if (!strcmp(parser_tokval(parser), "noref")) {
2538 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2539 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2546 /* Skip tokens until we hit a ]] */
2547 (void)!parsewarning(parser, WARN_UNKNOWN_ATTRIBUTE, "unknown attribute starting with `%s`", parser_tokval(parser));
2548 while (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2549 if (!parser_next(parser)) {
2550 parseerror(parser, "error inside attribute");
2557 else if (!strcmp(parser_tokval(parser), "static"))
2559 else if (!strcmp(parser_tokval(parser), "const"))
2561 else if (!strcmp(parser_tokval(parser), "var"))
2563 else if (with_local && !strcmp(parser_tokval(parser), "local"))
2565 else if (!strcmp(parser_tokval(parser), "noref"))
2567 else if (!had_const && !had_var && !had_noref && !had_noreturn && !had_attrib && !had_static) {
2572 if (!parser_next(parser))
2582 *noreturn = had_noreturn;
2583 *is_static = had_static;
2586 parseerror(parser, "parse error after variable qualifier");
2591 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
2593 ast_expression *operand;
2596 ast_switch *switchnode;
2597 ast_switch_case swcase;
2600 bool noref, noreturn, is_static;
2602 lex_ctx ctx = parser_ctx(parser);
2604 (void)block; /* not touching */
2607 /* parse over the opening paren */
2608 if (!parser_next(parser) || parser->tok != '(') {
2609 parseerror(parser, "expected switch operand in parenthesis");
2613 /* parse into the expression */
2614 if (!parser_next(parser)) {
2615 parseerror(parser, "expected switch operand");
2618 /* parse the operand */
2619 operand = parse_expression_leave(parser, false);
2623 switchnode = ast_switch_new(ctx, operand);
2626 if (parser->tok != ')') {
2627 ast_delete(switchnode);
2628 parseerror(parser, "expected closing paren after 'switch' operand");
2632 /* parse over the opening paren */
2633 if (!parser_next(parser) || parser->tok != '{') {
2634 ast_delete(switchnode);
2635 parseerror(parser, "expected list of cases");
2639 if (!parser_next(parser)) {
2640 ast_delete(switchnode);
2641 parseerror(parser, "expected 'case' or 'default'");
2645 /* new block; allow some variables to be declared here */
2646 parser_enterblock(parser);
2649 if (parser->tok == TOKEN_IDENT)
2650 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2651 if (typevar || parser->tok == TOKEN_TYPENAME) {
2652 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, false)) {
2653 ast_delete(switchnode);
2658 if (parse_var_qualifiers(parser, true, &cvq, &noref, &noreturn, &is_static))
2660 if (cvq == CV_WRONG) {
2661 ast_delete(switchnode);
2664 if (!parse_variable(parser, block, false, cvq, NULL, noref, noreturn, is_static)) {
2665 ast_delete(switchnode);
2674 while (parser->tok != '}') {
2675 ast_block *caseblock;
2677 if (!strcmp(parser_tokval(parser), "case")) {
2678 if (!parser_next(parser)) {
2679 ast_delete(switchnode);
2680 parseerror(parser, "expected expression for case");
2683 swcase.value = parse_expression_leave(parser, false);
2684 if (!swcase.value) {
2685 ast_delete(switchnode);
2686 parseerror(parser, "expected expression for case");
2689 if (!OPTS_FLAG(RELAXED_SWITCH)) {
2690 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
2691 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
2697 else if (!strcmp(parser_tokval(parser), "default")) {
2698 swcase.value = NULL;
2699 if (!parser_next(parser)) {
2700 ast_delete(switchnode);
2701 parseerror(parser, "expected colon");
2706 ast_delete(switchnode);
2707 parseerror(parser, "expected 'case' or 'default'");
2711 /* Now the colon and body */
2712 if (parser->tok != ':') {
2713 if (swcase.value) ast_unref(swcase.value);
2714 ast_delete(switchnode);
2715 parseerror(parser, "expected colon");
2719 if (!parser_next(parser)) {
2720 if (swcase.value) ast_unref(swcase.value);
2721 ast_delete(switchnode);
2722 parseerror(parser, "expected statements or case");
2725 caseblock = ast_block_new(parser_ctx(parser));
2727 if (swcase.value) ast_unref(swcase.value);
2728 ast_delete(switchnode);
2731 swcase.code = (ast_expression*)caseblock;
2732 vec_push(switchnode->cases, swcase);
2734 ast_expression *expr;
2735 if (parser->tok == '}')
2737 if (parser->tok == TOKEN_KEYWORD) {
2738 if (!strcmp(parser_tokval(parser), "case") ||
2739 !strcmp(parser_tokval(parser), "default"))
2744 if (!parse_statement(parser, caseblock, &expr, true)) {
2745 ast_delete(switchnode);
2750 if (!ast_block_add_expr(caseblock, expr)) {
2751 ast_delete(switchnode);
2757 parser_leaveblock(parser);
2760 if (parser->tok != '}') {
2761 ast_delete(switchnode);
2762 parseerror(parser, "expected closing paren of case list");
2765 if (!parser_next(parser)) {
2766 ast_delete(switchnode);
2767 parseerror(parser, "parse error after switch");
2770 *out = (ast_expression*)switchnode;
2774 static bool parse_goto(parser_t *parser, ast_expression **out)
2779 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2780 parseerror(parser, "expected label name after `goto`");
2784 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
2786 for (i = 0; i < vec_size(parser->labels); ++i) {
2787 if (!strcmp(parser->labels[i]->name, parser_tokval(parser))) {
2788 ast_goto_set_label(gt, parser->labels[i]);
2792 if (i == vec_size(parser->labels))
2793 vec_push(parser->gotos, gt);
2795 if (!parser_next(parser) || parser->tok != ';') {
2796 parseerror(parser, "semicolon expected after goto label");
2799 if (!parser_next(parser)) {
2800 parseerror(parser, "parse error after goto");
2804 *out = (ast_expression*)gt;
2808 static bool parse_skipwhite(parser_t *parser)
2811 if (!parser_next(parser))
2813 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
2814 return parser->tok < TOKEN_ERROR;
2817 static bool parse_eol(parser_t *parser)
2819 if (!parse_skipwhite(parser))
2821 return parser->tok == TOKEN_EOL;
2824 static bool parse_pragma_do(parser_t *parser)
2826 if (!parser_next(parser) ||
2827 parser->tok != TOKEN_IDENT ||
2828 strcmp(parser_tokval(parser), "pragma"))
2830 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
2833 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
2834 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
2838 if (!strcmp(parser_tokval(parser), "noref")) {
2839 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
2840 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
2843 parser->noref = !!parser_token(parser)->constval.i;
2844 if (!parse_eol(parser)) {
2845 parseerror(parser, "parse error after `noref` pragma");
2851 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
2858 static bool parse_pragma(parser_t *parser)
2861 parser->lex->flags.preprocessing = true;
2862 parser->lex->flags.mergelines = true;
2863 rv = parse_pragma_do(parser);
2864 if (parser->tok != TOKEN_EOL) {
2865 parseerror(parser, "junk after pragma");
2868 parser->lex->flags.preprocessing = false;
2869 parser->lex->flags.mergelines = false;
2870 if (!parser_next(parser)) {
2871 parseerror(parser, "parse error after pragma");
2877 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
2879 bool noref, noreturn, is_static;
2881 ast_value *typevar = NULL;
2885 if (parser->tok == TOKEN_IDENT)
2886 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2888 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
2890 /* local variable */
2892 parseerror(parser, "cannot declare a variable from here");
2895 if (opts.standard == COMPILER_QCC) {
2896 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
2899 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, false))
2903 else if (parse_var_qualifiers(parser, !!block, &cvq, &noref, &noreturn, &is_static))
2905 if (cvq == CV_WRONG)
2907 return parse_variable(parser, block, true, cvq, NULL, noref, noreturn, is_static);
2909 else if (parser->tok == TOKEN_KEYWORD)
2911 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
2916 if (!parser_next(parser)) {
2917 parseerror(parser, "parse error after __builtin_debug_printtype");
2921 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
2923 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
2924 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
2925 if (!parser_next(parser)) {
2926 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
2932 if (!parse_statement(parser, block, out, allow_cases))
2935 con_out("__builtin_debug_printtype: got no output node\n");
2938 ast_type_to_string(*out, ty, sizeof(ty));
2939 con_out("__builtin_debug_printtype: `%s`\n", ty);
2944 else if (!strcmp(parser_tokval(parser), "return"))
2946 return parse_return(parser, block, out);
2948 else if (!strcmp(parser_tokval(parser), "if"))
2950 return parse_if(parser, block, out);
2952 else if (!strcmp(parser_tokval(parser), "while"))
2954 return parse_while(parser, block, out);
2956 else if (!strcmp(parser_tokval(parser), "do"))
2958 return parse_dowhile(parser, block, out);
2960 else if (!strcmp(parser_tokval(parser), "for"))
2962 if (opts.standard == COMPILER_QCC) {
2963 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
2966 return parse_for(parser, block, out);
2968 else if (!strcmp(parser_tokval(parser), "break"))
2970 return parse_break_continue(parser, block, out, false);
2972 else if (!strcmp(parser_tokval(parser), "continue"))
2974 return parse_break_continue(parser, block, out, true);
2976 else if (!strcmp(parser_tokval(parser), "switch"))
2978 return parse_switch(parser, block, out);
2980 else if (!strcmp(parser_tokval(parser), "case") ||
2981 !strcmp(parser_tokval(parser), "default"))
2984 parseerror(parser, "unexpected 'case' label");
2989 else if (!strcmp(parser_tokval(parser), "goto"))
2991 return parse_goto(parser, out);
2993 else if (!strcmp(parser_tokval(parser), "typedef"))
2995 if (!parser_next(parser)) {
2996 parseerror(parser, "expected type definition after 'typedef'");
2999 return parse_typedef(parser);
3001 parseerror(parser, "Unexpected keyword");
3004 else if (parser->tok == '{')
3007 inner = parse_block(parser);
3010 *out = (ast_expression*)inner;
3013 else if (parser->tok == ':')
3017 if (!parser_next(parser)) {
3018 parseerror(parser, "expected label name");
3021 if (parser->tok != TOKEN_IDENT) {
3022 parseerror(parser, "label must be an identifier");
3025 label = ast_label_new(parser_ctx(parser), parser_tokval(parser));
3028 vec_push(parser->labels, label);
3029 *out = (ast_expression*)label;
3030 if (!parser_next(parser)) {
3031 parseerror(parser, "parse error after label");
3034 for (i = 0; i < vec_size(parser->gotos); ++i) {
3035 if (!strcmp(parser->gotos[i]->name, label->name)) {
3036 ast_goto_set_label(parser->gotos[i], label);
3037 vec_remove(parser->gotos, i, 1);
3043 else if (parser->tok == ';')
3045 if (!parser_next(parser)) {
3046 parseerror(parser, "parse error after empty statement");
3053 ast_expression *exp = parse_expression(parser, false);
3057 if (!ast_side_effects(exp)) {
3058 if (genwarning(ast_ctx(exp), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
3065 static bool parse_block_into(parser_t *parser, ast_block *block)
3069 parser_enterblock(parser);
3071 if (!parser_next(parser)) { /* skip the '{' */
3072 parseerror(parser, "expected function body");
3076 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
3078 ast_expression *expr = NULL;
3079 if (parser->tok == '}')
3082 if (!parse_statement(parser, block, &expr, false)) {
3083 /* parseerror(parser, "parse error"); */
3089 if (!ast_block_add_expr(block, expr)) {
3096 if (parser->tok != '}') {
3099 (void)parser_next(parser);
3103 if (!parser_leaveblock(parser))
3105 return retval && !!block;
3108 static ast_block* parse_block(parser_t *parser)
3111 block = ast_block_new(parser_ctx(parser));
3114 if (!parse_block_into(parser, block)) {
3115 ast_block_delete(block);
3121 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
3123 if (parser->tok == '{') {
3124 *out = (ast_expression*)parse_block(parser);
3127 return parse_statement(parser, NULL, out, false);
3130 static bool create_vector_members(ast_value *var, ast_member **me)
3133 size_t len = strlen(var->name);
3135 for (i = 0; i < 3; ++i) {
3136 char *name = (char*)mem_a(len+3);
3137 memcpy(name, var->name, len);
3139 name[len+1] = 'x'+i;
3141 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
3150 do { ast_member_delete(me[--i]); } while(i);
3154 static bool parse_function_body(parser_t *parser, ast_value *var)
3156 ast_block *block = NULL;
3161 ast_expression *framenum = NULL;
3162 ast_expression *nextthink = NULL;
3163 /* None of the following have to be deleted */
3164 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
3165 ast_expression *gbl_time = NULL, *gbl_self = NULL;
3166 bool has_frame_think;
3170 has_frame_think = false;
3171 old = parser->function;
3173 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
3174 parseerror(parser, "gotos/labels leaking");
3178 if (var->expression.flags & AST_FLAG_VARIADIC) {
3179 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
3180 "variadic function with implementation will not be able to access additional parameters"))
3186 if (parser->tok == '[') {
3187 /* got a frame definition: [ framenum, nextthink ]
3188 * this translates to:
3189 * self.frame = framenum;
3190 * self.nextthink = time + 0.1;
3191 * self.think = nextthink;
3195 fld_think = parser_find_field(parser, "think");
3196 fld_nextthink = parser_find_field(parser, "nextthink");
3197 fld_frame = parser_find_field(parser, "frame");
3198 if (!fld_think || !fld_nextthink || !fld_frame) {
3199 parseerror(parser, "cannot use [frame,think] notation without the required fields");
3200 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
3203 gbl_time = parser_find_global(parser, "time");
3204 gbl_self = parser_find_global(parser, "self");
3205 if (!gbl_time || !gbl_self) {
3206 parseerror(parser, "cannot use [frame,think] notation without the required globals");
3207 parseerror(parser, "please declare the following globals: `time`, `self`");
3211 if (!parser_next(parser))
3214 framenum = parse_expression_leave(parser, true);
3216 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
3219 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
3220 ast_unref(framenum);
3221 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
3225 if (parser->tok != ',') {
3226 ast_unref(framenum);
3227 parseerror(parser, "expected comma after frame number in [frame,think] notation");
3228 parseerror(parser, "Got a %i\n", parser->tok);
3232 if (!parser_next(parser)) {
3233 ast_unref(framenum);
3237 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
3239 /* qc allows the use of not-yet-declared functions here
3240 * - this automatically creates a prototype */
3241 ast_value *thinkfunc;
3242 ast_expression *functype = fld_think->expression.next;
3244 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
3245 if (!thinkfunc || !ast_type_adopt(thinkfunc, functype)) {
3246 ast_unref(framenum);
3247 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
3251 if (!parser_next(parser)) {
3252 ast_unref(framenum);
3253 ast_delete(thinkfunc);
3257 vec_push(parser->globals, (ast_expression*)thinkfunc);
3258 util_htset(parser->htglobals, thinkfunc->name, thinkfunc);
3259 nextthink = (ast_expression*)thinkfunc;
3262 nextthink = parse_expression_leave(parser, true);
3264 ast_unref(framenum);
3265 parseerror(parser, "expected a think-function in [frame,think] notation");
3270 if (!ast_istype(nextthink, ast_value)) {
3271 parseerror(parser, "think-function in [frame,think] notation must be a constant");
3275 if (retval && parser->tok != ']') {
3276 parseerror(parser, "expected closing `]` for [frame,think] notation");
3280 if (retval && !parser_next(parser)) {
3284 if (retval && parser->tok != '{') {
3285 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
3290 ast_unref(nextthink);
3291 ast_unref(framenum);
3295 has_frame_think = true;
3298 block = ast_block_new(parser_ctx(parser));
3300 parseerror(parser, "failed to allocate block");
3301 if (has_frame_think) {
3302 ast_unref(nextthink);
3303 ast_unref(framenum);
3308 if (has_frame_think) {
3310 ast_expression *self_frame;
3311 ast_expression *self_nextthink;
3312 ast_expression *self_think;
3313 ast_expression *time_plus_1;
3314 ast_store *store_frame;
3315 ast_store *store_nextthink;
3316 ast_store *store_think;
3318 ctx = parser_ctx(parser);
3319 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
3320 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
3321 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
3323 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
3324 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
3326 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
3327 if (self_frame) ast_delete(self_frame);
3328 if (self_nextthink) ast_delete(self_nextthink);
3329 if (self_think) ast_delete(self_think);
3330 if (time_plus_1) ast_delete(time_plus_1);
3336 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
3337 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
3338 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
3341 ast_delete(self_frame);
3344 if (!store_nextthink) {
3345 ast_delete(self_nextthink);
3349 ast_delete(self_think);
3353 if (store_frame) ast_delete(store_frame);
3354 if (store_nextthink) ast_delete(store_nextthink);
3355 if (store_think) ast_delete(store_think);
3358 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
3359 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
3360 !ast_block_add_expr(block, (ast_expression*)store_think))
3367 parseerror(parser, "failed to generate code for [frame,think]");
3368 ast_unref(nextthink);
3369 ast_unref(framenum);
3375 parser_enterblock(parser);
3377 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
3379 ast_value *param = var->expression.params[parami];
3382 if (param->expression.vtype != TYPE_VECTOR &&
3383 (param->expression.vtype != TYPE_FIELD ||
3384 param->expression.next->expression.vtype != TYPE_VECTOR))
3389 if (!create_vector_members(param, me)) {
3390 ast_block_delete(block);
3394 for (e = 0; e < 3; ++e) {
3395 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
3396 ast_block_collect(block, (ast_expression*)me[e]);
3400 func = ast_function_new(ast_ctx(var), var->name, var);
3402 parseerror(parser, "failed to allocate function for `%s`", var->name);
3403 ast_block_delete(block);
3406 vec_push(parser->functions, func);
3408 parser->function = func;
3409 if (!parse_block_into(parser, block)) {
3410 ast_block_delete(block);
3414 vec_push(func->blocks, block);
3416 parser->function = old;
3417 if (!parser_leaveblock(parser))
3419 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
3420 parseerror(parser, "internal error: local scopes left");
3424 if (parser->tok == ';')
3425 return parser_next(parser);
3426 else if (opts.standard == COMPILER_QCC)
3427 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
3431 vec_pop(parser->functions);
3432 ast_function_delete(func);
3433 var->constval.vfunc = NULL;
3436 (void)!parser_leaveblock(parser);
3437 parser->function = old;
3441 static ast_expression *array_accessor_split(
3446 ast_expression *left,
3447 ast_expression *right
3453 lex_ctx ctx = ast_ctx(array);
3455 if (!left || !right) {
3456 if (left) ast_delete(left);
3457 if (right) ast_delete(right);
3461 cmp = ast_binary_new(ctx, INSTR_LT,
3462 (ast_expression*)index,
3463 (ast_expression*)parser_const_float(parser, middle));
3467 parseerror(parser, "internal error: failed to create comparison for array setter");
3471 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
3473 ast_delete(cmp); /* will delete left and right */
3474 parseerror(parser, "internal error: failed to create conditional jump for array setter");
3478 return (ast_expression*)ifthen;
3481 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
3483 lex_ctx ctx = ast_ctx(array);
3485 if (from+1 == afterend) {
3486 /* set this value */
3489 ast_array_index *subscript;
3491 int assignop = type_store_instr[value->expression.vtype];
3493 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3494 assignop = INSTR_STORE_V;
3496 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3500 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
3502 ast_delete(subscript);
3506 block = ast_block_new(ctx);
3512 if (!ast_block_add_expr(block, (ast_expression*)st)) {
3517 ret = ast_return_new(ctx, NULL);
3523 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
3528 return (ast_expression*)block;
3530 ast_expression *left, *right;
3531 size_t diff = afterend - from;
3532 size_t middle = from + diff/2;
3533 left = array_setter_node(parser, array, index, value, from, middle);
3534 right = array_setter_node(parser, array, index, value, middle, afterend);
3535 return array_accessor_split(parser, array, index, middle, left, right);
3539 static ast_expression *array_field_setter_node(
3548 lex_ctx ctx = ast_ctx(array);
3550 if (from+1 == afterend) {
3551 /* set this value */
3554 ast_entfield *entfield;
3555 ast_array_index *subscript;
3557 int assignop = type_storep_instr[value->expression.vtype];
3559 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3560 assignop = INSTR_STOREP_V;
3562 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3566 entfield = ast_entfield_new_force(ctx,
3567 (ast_expression*)entity,
3568 (ast_expression*)subscript,
3569 (ast_expression*)subscript);
3571 ast_delete(subscript);
3575 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
3577 ast_delete(entfield);
3581 block = ast_block_new(ctx);
3587 if (!ast_block_add_expr(block, (ast_expression*)st)) {
3592 ret = ast_return_new(ctx, NULL);
3598 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
3603 return (ast_expression*)block;
3605 ast_expression *left, *right;
3606 size_t diff = afterend - from;
3607 size_t middle = from + diff/2;
3608 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
3609 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
3610 return array_accessor_split(parser, array, index, middle, left, right);
3614 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
3616 lex_ctx ctx = ast_ctx(array);
3618 if (from+1 == afterend) {
3620 ast_array_index *subscript;
3622 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3626 ret = ast_return_new(ctx, (ast_expression*)subscript);
3628 ast_delete(subscript);
3632 return (ast_expression*)ret;
3634 ast_expression *left, *right;
3635 size_t diff = afterend - from;
3636 size_t middle = from + diff/2;
3637 left = array_getter_node(parser, array, index, from, middle);
3638 right = array_getter_node(parser, array, index, middle, afterend);
3639 return array_accessor_split(parser, array, index, middle, left, right);
3643 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
3645 ast_function *func = NULL;
3646 ast_value *fval = NULL;
3647 ast_block *body = NULL;
3649 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
3651 parseerror(parser, "failed to create accessor function value");
3655 func = ast_function_new(ast_ctx(array), funcname, fval);
3658 parseerror(parser, "failed to create accessor function node");
3662 body = ast_block_new(ast_ctx(array));
3664 parseerror(parser, "failed to create block for array accessor");
3670 vec_push(func->blocks, body);
3673 vec_push(parser->accessors, fval);
3678 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
3680 ast_expression *root = NULL;
3681 ast_value *index = NULL;
3682 ast_value *value = NULL;
3686 if (!ast_istype(array->expression.next, ast_value)) {
3687 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3691 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3693 func = fval->constval.vfunc;
3694 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
3696 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3697 value = ast_value_copy((ast_value*)array->expression.next);
3699 if (!index || !value) {
3700 parseerror(parser, "failed to create locals for array accessor");
3703 (void)!ast_value_set_name(value, "value"); /* not important */
3704 vec_push(fval->expression.params, index);
3705 vec_push(fval->expression.params, value);
3707 root = array_setter_node(parser, array, index, value, 0, array->expression.count);
3709 parseerror(parser, "failed to build accessor search tree");
3713 array->setter = fval;
3714 return ast_block_add_expr(func->blocks[0], root);
3716 if (index) ast_delete(index);
3717 if (value) ast_delete(value);
3718 if (root) ast_delete(root);
3724 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
3726 ast_expression *root = NULL;
3727 ast_value *entity = NULL;
3728 ast_value *index = NULL;
3729 ast_value *value = NULL;
3733 if (!ast_istype(array->expression.next, ast_value)) {
3734 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3738 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3740 func = fval->constval.vfunc;
3741 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
3743 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
3744 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3745 value = ast_value_copy((ast_value*)array->expression.next);
3746 if (!entity || !index || !value) {
3747 parseerror(parser, "failed to create locals for array accessor");
3750 (void)!ast_value_set_name(value, "value"); /* not important */
3751 vec_push(fval->expression.params, entity);
3752 vec_push(fval->expression.params, index);
3753 vec_push(fval->expression.params, value);
3755 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
3757 parseerror(parser, "failed to build accessor search tree");
3761 array->setter = fval;
3762 return ast_block_add_expr(func->blocks[0], root);
3764 if (entity) ast_delete(entity);
3765 if (index) ast_delete(index);
3766 if (value) ast_delete(value);
3767 if (root) ast_delete(root);
3773 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
3775 ast_expression *root = NULL;
3776 ast_value *index = NULL;
3780 /* NOTE: checking array->expression.next rather than elemtype since
3781 * for fields elemtype is a temporary fieldtype.
3783 if (!ast_istype(array->expression.next, ast_value)) {
3784 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3788 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3790 func = fval->constval.vfunc;
3791 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
3793 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3796 parseerror(parser, "failed to create locals for array accessor");
3799 vec_push(fval->expression.params, index);
3801 root = array_getter_node(parser, array, index, 0, array->expression.count);
3803 parseerror(parser, "failed to build accessor search tree");
3807 array->getter = fval;
3808 return ast_block_add_expr(func->blocks[0], root);
3810 if (index) ast_delete(index);
3811 if (root) ast_delete(root);
3817 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
3818 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
3826 bool variadic = false;
3828 ctx = parser_ctx(parser);
3830 /* for the sake of less code we parse-in in this function */
3831 if (!parser_next(parser)) {
3832 parseerror(parser, "expected parameter list");
3838 /* parse variables until we hit a closing paren */
3839 while (parser->tok != ')') {
3841 /* there must be commas between them */
3842 if (parser->tok != ',') {
3843 parseerror(parser, "expected comma or end of parameter list");
3846 if (!parser_next(parser)) {
3847 parseerror(parser, "expected parameter");
3853 if (parser->tok == TOKEN_DOTS) {
3854 /* '...' indicates a varargs function */
3856 if (!parser_next(parser)) {
3857 parseerror(parser, "expected parameter");
3860 if (parser->tok != ')') {
3861 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
3867 /* for anything else just parse a typename */
3868 param = parse_typename(parser, NULL, NULL);
3871 vec_push(params, param);
3872 if (param->expression.vtype >= TYPE_VARIANT) {
3873 char tname[1024]; /* typename is reserved in C++ */
3874 ast_type_to_string((ast_expression*)param, tname, sizeof(tname));
3875 parseerror(parser, "type not supported as part of a parameter list: %s", tname);
3881 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
3885 if (vec_size(params) > 8 && opts.standard == COMPILER_QCC)
3886 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
3889 if (!parser_next(parser)) {
3890 parseerror(parser, "parse error after typename");
3894 /* now turn 'var' into a function type */
3895 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
3896 fval->expression.next = (ast_expression*)var;
3898 fval->expression.flags |= AST_FLAG_VARIADIC;
3901 var->expression.params = params;
3908 for (i = 0; i < vec_size(params); ++i)
3909 ast_delete(params[i]);
3914 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
3916 ast_expression *cexp;
3917 ast_value *cval, *tmp;
3920 ctx = parser_ctx(parser);
3922 if (!parser_next(parser)) {
3924 parseerror(parser, "expected array-size");
3928 cexp = parse_expression_leave(parser, true);
3930 if (!cexp || !ast_istype(cexp, ast_value)) {
3934 parseerror(parser, "expected array-size as constant positive integer");
3937 cval = (ast_value*)cexp;
3939 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
3940 tmp->expression.next = (ast_expression*)var;
3943 if (cval->expression.vtype == TYPE_INTEGER)
3944 tmp->expression.count = cval->constval.vint;
3945 else if (cval->expression.vtype == TYPE_FLOAT)
3946 tmp->expression.count = cval->constval.vfloat;
3950 parseerror(parser, "array-size must be a positive integer constant");
3955 if (parser->tok != ']') {
3957 parseerror(parser, "expected ']' after array-size");
3960 if (!parser_next(parser)) {
3962 parseerror(parser, "error after parsing array size");
3968 /* Parse a complete typename.
3969 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
3970 * but when parsing variables separated by comma
3971 * 'storebase' should point to where the base-type should be kept.
3972 * The base type makes up every bit of type information which comes *before* the
3975 * The following will be parsed in its entirety:
3977 * The 'basetype' in this case is 'void()'
3978 * and if there's a comma after it, say:
3980 * then the type-information 'void()' can be stored in 'storebase'
3982 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
3984 ast_value *var, *tmp;
3987 const char *name = NULL;
3988 bool isfield = false;
3989 bool wasarray = false;
3990 size_t morefields = 0;
3992 ctx = parser_ctx(parser);
3994 /* types may start with a dot */
3995 if (parser->tok == '.') {
3997 /* if we parsed a dot we need a typename now */
3998 if (!parser_next(parser)) {
3999 parseerror(parser, "expected typename for field definition");
4003 /* Further dots are handled seperately because they won't be part of the
4006 while (parser->tok == '.') {
4008 if (!parser_next(parser)) {
4009 parseerror(parser, "expected typename for field definition");
4014 if (parser->tok == TOKEN_IDENT)
4015 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
4016 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
4017 parseerror(parser, "expected typename");
4021 /* generate the basic type value */
4022 if (cached_typedef) {
4023 var = ast_value_copy(cached_typedef);
4024 ast_value_set_name(var, "<type(from_def)>");
4026 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
4028 for (; morefields; --morefields) {
4029 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
4030 tmp->expression.next = (ast_expression*)var;
4034 /* do not yet turn into a field - remember:
4035 * .void() foo; is a field too
4036 * .void()() foo; is a function
4040 if (!parser_next(parser)) {
4042 parseerror(parser, "parse error after typename");
4046 /* an opening paren now starts the parameter-list of a function
4047 * this is where original-QC has parameter lists.
4048 * We allow a single parameter list here.
4049 * Much like fteqcc we don't allow `float()() x`
4051 if (parser->tok == '(') {
4052 var = parse_parameter_list(parser, var);
4057 /* store the base if requested */
4059 *storebase = ast_value_copy(var);
4061 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4062 tmp->expression.next = (ast_expression*)*storebase;
4067 /* there may be a name now */
4068 if (parser->tok == TOKEN_IDENT) {
4069 name = util_strdup(parser_tokval(parser));
4071 if (!parser_next(parser)) {
4073 parseerror(parser, "error after variable or field declaration");
4078 /* now this may be an array */
4079 if (parser->tok == '[') {
4081 var = parse_arraysize(parser, var);
4086 /* This is the point where we can turn it into a field */
4088 /* turn it into a field if desired */
4089 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4090 tmp->expression.next = (ast_expression*)var;
4094 /* now there may be function parens again */
4095 if (parser->tok == '(' && opts.standard == COMPILER_QCC)
4096 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4097 if (parser->tok == '(' && wasarray)
4098 parseerror(parser, "arrays as part of a return type is not supported");
4099 while (parser->tok == '(') {
4100 var = parse_parameter_list(parser, var);
4109 /* finally name it */
4111 if (!ast_value_set_name(var, name)) {
4113 parseerror(parser, "internal error: failed to set name");
4116 /* free the name, ast_value_set_name duplicates */
4123 static bool parse_typedef(parser_t *parser)
4125 ast_value *typevar, *oldtype;
4126 ast_expression *old;
4128 typevar = parse_typename(parser, NULL, NULL);
4133 if ( (old = parser_find_var(parser, typevar->name)) ) {
4134 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
4135 " -> `%s` has been declared here: %s:%i",
4136 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
4137 ast_delete(typevar);
4141 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
4142 parseerror(parser, "type `%s` has already been declared here: %s:%i",
4143 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
4144 ast_delete(typevar);
4148 vec_push(parser->_typedefs, typevar);
4149 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
4151 if (parser->tok != ';') {
4152 parseerror(parser, "expected semicolon after typedef");
4155 if (!parser_next(parser)) {
4156 parseerror(parser, "parse error after typedef");
4163 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref, bool noreturn, bool is_static)
4167 ast_expression *old;
4171 ast_value *basetype = NULL;
4173 bool isparam = false;
4174 bool isvector = false;
4175 bool cleanvar = true;
4176 bool wasarray = false;
4180 if (!localblock && is_static)
4181 parseerror(parser, "`static` qualifier is not supported in global scope");
4183 /* get the first complete variable */
4184 var = parse_typename(parser, &basetype, cached_typedef);
4187 ast_delete(basetype);
4195 /* Part 0: finish the type */
4196 if (parser->tok == '(') {
4197 if (opts.standard == COMPILER_QCC)
4198 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4199 var = parse_parameter_list(parser, var);
4205 /* we only allow 1-dimensional arrays */
4206 if (parser->tok == '[') {
4208 var = parse_arraysize(parser, var);
4214 if (parser->tok == '(' && wasarray) {
4215 parseerror(parser, "arrays as part of a return type is not supported");
4216 /* we'll still parse the type completely for now */
4218 /* for functions returning functions */
4219 while (parser->tok == '(') {
4220 if (opts.standard == COMPILER_QCC)
4221 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4222 var = parse_parameter_list(parser, var);
4229 var->cvq = qualifier;
4230 /* in a noref section we simply bump the usecount */
4231 if (noref || parser->noref)
4234 var->expression.flags |= AST_FLAG_NORETURN;
4237 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
4238 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
4239 * is then filled with the previous definition and the parameter-names replaced.
4242 /* Deal with end_sys_ vars */
4244 if (!strcmp(var->name, "end_sys_globals")) {
4246 parser->crc_globals = vec_size(parser->globals);
4249 else if (!strcmp(var->name, "end_sys_fields")) {
4251 parser->crc_fields = vec_size(parser->fields);
4254 if (was_end && var->expression.vtype == TYPE_FIELD) {
4255 if (parsewarning(parser, WARN_END_SYS_FIELDS,
4256 "global '%s' hint should not be a field",
4257 parser_tokval(parser)))
4264 if (!nofields && var->expression.vtype == TYPE_FIELD)
4266 /* deal with field declarations */
4267 old = parser_find_field(parser, var->name);
4269 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
4270 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
4279 parseerror(parser, "field `%s` already declared here: %s:%i",
4280 var->name, ast_ctx(old).file, ast_ctx(old).line);
4285 if (opts.standard == COMPILER_QCC &&
4286 (old = parser_find_global(parser, var->name)))
4288 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
4289 parseerror(parser, "field `%s` already declared here: %s:%i",
4290 var->name, ast_ctx(old).file, ast_ctx(old).line);
4297 /* deal with other globals */
4298 old = parser_find_global(parser, var->name);
4299 if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
4301 /* This is a function which had a prototype */
4302 if (!ast_istype(old, ast_value)) {
4303 parseerror(parser, "internal error: prototype is not an ast_value");
4307 proto = (ast_value*)old;
4308 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
4309 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
4311 ast_ctx(proto).file, ast_ctx(proto).line);
4315 /* we need the new parameter-names */
4316 for (i = 0; i < vec_size(proto->expression.params); ++i)
4317 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
4325 if (opts.standard == COMPILER_GMQCC) {
4326 parseerror(parser, "global `%s` already declared here: %s:%i",
4327 var->name, ast_ctx(old).file, ast_ctx(old).line);
4331 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
4332 "global `%s` already declared here: %s:%i",
4333 var->name, ast_ctx(old).file, ast_ctx(old).line))
4338 proto = (ast_value*)old;
4339 if (!ast_istype(old, ast_value)) {
4340 parseerror(parser, "internal error: not an ast_value");
4349 if (opts.standard == COMPILER_QCC &&
4350 (old = parser_find_field(parser, var->name)))
4352 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
4353 parseerror(parser, "global `%s` already declared here: %s:%i",
4354 var->name, ast_ctx(old).file, ast_ctx(old).line);
4361 else /* it's not a global */
4363 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
4364 if (old && !isparam) {
4365 parseerror(parser, "local `%s` already declared here: %s:%i",
4366 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
4370 old = parser_find_local(parser, var->name, 0, &isparam);
4371 if (old && isparam) {
4372 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
4373 "local `%s` is shadowing a parameter", var->name))
4375 parseerror(parser, "local `%s` already declared here: %s:%i",
4376 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
4380 if (opts.standard != COMPILER_GMQCC) {
4389 * Create the global/local, and deal with vector types.
4392 if (var->expression.vtype == TYPE_VECTOR)
4394 else if (var->expression.vtype == TYPE_FIELD &&
4395 var->expression.next->expression.vtype == TYPE_VECTOR)
4399 if (!create_vector_members(var, me)) {
4406 /* deal with global variables, fields, functions */
4407 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
4408 var->isfield = true;
4409 vec_push(parser->fields, (ast_expression*)var);
4410 util_htset(parser->htfields, var->name, var);
4412 for (i = 0; i < 3; ++i) {
4413 vec_push(parser->fields, (ast_expression*)me[i]);
4414 util_htset(parser->htfields, me[i]->name, me[i]);
4419 vec_push(parser->globals, (ast_expression*)var);
4420 util_htset(parser->htglobals, var->name, var);
4422 for (i = 0; i < 3; ++i) {
4423 vec_push(parser->globals, (ast_expression*)me[i]);
4424 util_htset(parser->htglobals, me[i]->name, me[i]);
4430 /* a static adds itself to be generated like any other global
4431 * but is added to the local namespace instead
4433 char *defname = NULL;
4434 size_t prefix_len, ln;
4436 ln = strlen(parser->function->name);
4437 vec_append(defname, ln, parser->function->name);
4439 vec_append(defname, 2, "::");
4440 /* remember the length up to here */
4441 prefix_len = vec_size(defname);
4443 /* Add it to the local scope */
4444 util_htset(vec_last(parser->variables), var->name, (void*)var);
4445 /* now rename the global */
4446 ln = strlen(var->name);
4447 vec_append(defname, ln, var->name);
4448 ast_value_set_name(var, defname);
4450 /* push it to the to-be-generated globals */
4451 vec_push(parser->globals, (ast_expression*)var);
4453 /* same game for the vector members */
4455 for (i = 0; i < 3; ++i) {
4456 util_htset(vec_last(parser->variables), me[i]->name, (void*)(me[i]));
4458 vec_shrinkto(defname, prefix_len);
4459 ln = strlen(me[i]->name);
4460 vec_append(defname, ln, me[i]->name);
4461 ast_member_set_name(me[i], defname);
4463 vec_push(parser->globals, (ast_expression*)me[i]);
4468 vec_push(localblock->locals, var);
4469 parser_addlocal(parser, var->name, (ast_expression*)var);
4471 for (i = 0; i < 3; ++i) {
4472 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
4473 ast_block_collect(localblock, (ast_expression*)me[i]);
4479 me[0] = me[1] = me[2] = NULL;
4484 if (var->expression.vtype == TYPE_ARRAY) {
4486 snprintf(name, sizeof(name), "%s##SET", var->name);
4487 if (!parser_create_array_setter(parser, var, name))
4489 snprintf(name, sizeof(name), "%s##GET", var->name);
4490 if (!parser_create_array_getter(parser, var, var->expression.next, name))
4493 else if (!localblock && !nofields &&
4494 var->expression.vtype == TYPE_FIELD &&
4495 var->expression.next->expression.vtype == TYPE_ARRAY)
4498 ast_expression *telem;
4500 ast_value *array = (ast_value*)var->expression.next;
4502 if (!ast_istype(var->expression.next, ast_value)) {
4503 parseerror(parser, "internal error: field element type must be an ast_value");
4507 snprintf(name, sizeof(name), "%s##SETF", var->name);
4508 if (!parser_create_array_field_setter(parser, array, name))
4511 telem = ast_type_copy(ast_ctx(var), array->expression.next);
4512 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
4513 tfield->expression.next = telem;
4514 snprintf(name, sizeof(name), "%s##GETFP", var->name);
4515 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
4523 if (parser->tok == ';') {
4524 ast_delete(basetype);
4525 if (!parser_next(parser)) {
4526 parseerror(parser, "error after variable declaration");
4532 if (parser->tok == ',')
4536 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
4539 parseerror(parser, "missing comma or semicolon while parsing variables");
4543 if (localblock && opts.standard == COMPILER_QCC) {
4544 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
4545 "initializing expression turns variable `%s` into a constant in this standard",
4552 if (parser->tok != '{') {
4553 if (parser->tok != '=') {
4554 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
4558 if (!parser_next(parser)) {
4559 parseerror(parser, "error parsing initializer");
4563 else if (opts.standard == COMPILER_QCC) {
4564 parseerror(parser, "expected '=' before function body in this standard");
4567 if (parser->tok == '#') {
4568 ast_function *func = NULL;
4571 parseerror(parser, "cannot declare builtins within functions");
4574 if (var->expression.vtype != TYPE_FUNCTION) {
4575 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
4578 if (!parser_next(parser)) {
4579 parseerror(parser, "expected builtin number");
4582 if (parser->tok != TOKEN_INTCONST) {
4583 parseerror(parser, "builtin number must be an integer constant");
4586 if (parser_token(parser)->constval.i < 0) {
4587 parseerror(parser, "builtin number must be an integer greater than zero");
4591 if (var->hasvalue) {
4592 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
4593 "builtin `%s` has already been defined\n"
4594 " -> previous declaration here: %s:%i",
4595 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
4599 func = ast_function_new(ast_ctx(var), var->name, var);
4601 parseerror(parser, "failed to allocate function for `%s`", var->name);
4604 vec_push(parser->functions, func);
4606 func->builtin = -parser_token(parser)->constval.i-1;
4609 if (!parser_next(parser)) {
4610 parseerror(parser, "expected comma or semicolon");
4612 ast_function_delete(func);
4613 var->constval.vfunc = NULL;
4617 else if (parser->tok == '{' || parser->tok == '[')
4620 parseerror(parser, "cannot declare functions within functions");
4625 ast_ctx(proto) = parser_ctx(parser);
4627 if (!parse_function_body(parser, var))
4629 ast_delete(basetype);
4630 for (i = 0; i < vec_size(parser->gotos); ++i)
4631 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
4632 vec_free(parser->gotos);
4633 vec_free(parser->labels);
4636 ast_expression *cexp;
4639 cexp = parse_expression_leave(parser, true);
4644 cval = (ast_value*)cexp;
4645 if (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
4646 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
4649 if (opts.standard != COMPILER_GMQCC &&
4650 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
4651 qualifier != CV_VAR)
4653 var->cvq = CV_CONST;
4655 var->hasvalue = true;
4656 if (cval->expression.vtype == TYPE_STRING)
4657 var->constval.vstring = parser_strdup(cval->constval.vstring);
4658 else if (cval->expression.vtype == TYPE_FIELD)
4659 var->constval.vfield = cval;
4661 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
4666 shunt sy = { NULL, NULL };
4669 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
4670 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
4671 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
4672 if (!parser_sy_apply_operator(parser, &sy))
4675 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
4676 parseerror(parser, "internal error: leaked operands");
4677 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
4687 if (parser->tok == ',') {
4688 if (!parser_next(parser)) {
4689 parseerror(parser, "expected another variable");
4693 if (parser->tok != TOKEN_IDENT) {
4694 parseerror(parser, "expected another variable");
4697 var = ast_value_copy(basetype);
4699 ast_value_set_name(var, parser_tokval(parser));
4700 if (!parser_next(parser)) {
4701 parseerror(parser, "error parsing variable declaration");
4707 if (parser->tok != ';') {
4708 parseerror(parser, "missing semicolon after variables");
4712 if (!parser_next(parser)) {
4713 parseerror(parser, "parse error after variable declaration");
4717 ast_delete(basetype);
4721 if (cleanvar && var)
4723 ast_delete(basetype);
4727 ast_delete(basetype);
4728 if (cleanvar && var)
4730 if (me[0]) ast_member_delete(me[0]);
4731 if (me[1]) ast_member_delete(me[1]);
4732 if (me[2]) ast_member_delete(me[2]);
4736 static bool parser_global_statement(parser_t *parser)
4740 bool noreturn = false;
4741 bool is_static = false;
4742 ast_value *istype = NULL;
4744 if (parser->tok == TOKEN_IDENT)
4745 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
4747 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
4749 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false, false);
4751 else if (parse_var_qualifiers(parser, false, &cvq, &noref, &noreturn, &is_static))
4753 if (cvq == CV_WRONG)
4755 return parse_variable(parser, NULL, true, cvq, NULL, noref, noreturn, is_static);
4757 else if (parser->tok == TOKEN_KEYWORD)
4759 if (!strcmp(parser_tokval(parser), "typedef")) {
4760 if (!parser_next(parser)) {
4761 parseerror(parser, "expected type definition after 'typedef'");
4764 return parse_typedef(parser);
4766 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
4769 else if (parser->tok == '#')
4771 return parse_pragma(parser);
4773 else if (parser->tok == '$')
4775 if (!parser_next(parser)) {
4776 parseerror(parser, "parse error");
4782 parseerror(parser, "unexpected token: %s", parser->lex->tok.value);
4788 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
4790 return util_crc16(old, str, strlen(str));
4793 static void progdefs_crc_file(const char *str)
4795 /* write to progdefs.h here */
4799 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
4801 old = progdefs_crc_sum(old, str);
4802 progdefs_crc_file(str);
4806 static void generate_checksum(parser_t *parser)
4808 uint16_t crc = 0xFFFF;
4812 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
4813 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
4815 progdefs_crc_file("\tint\tpad;\n");
4816 progdefs_crc_file("\tint\tofs_return[3];\n");
4817 progdefs_crc_file("\tint\tofs_parm0[3];\n");
4818 progdefs_crc_file("\tint\tofs_parm1[3];\n");
4819 progdefs_crc_file("\tint\tofs_parm2[3];\n");
4820 progdefs_crc_file("\tint\tofs_parm3[3];\n");
4821 progdefs_crc_file("\tint\tofs_parm4[3];\n");
4822 progdefs_crc_file("\tint\tofs_parm5[3];\n");
4823 progdefs_crc_file("\tint\tofs_parm6[3];\n");
4824 progdefs_crc_file("\tint\tofs_parm7[3];\n");
4826 for (i = 0; i < parser->crc_globals; ++i) {
4827 if (!ast_istype(parser->globals[i], ast_value))
4829 value = (ast_value*)(parser->globals[i]);
4830 switch (value->expression.vtype) {
4831 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
4832 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
4833 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
4834 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
4836 crc = progdefs_crc_both(crc, "\tint\t");
4839 crc = progdefs_crc_both(crc, value->name);
4840 crc = progdefs_crc_both(crc, ";\n");
4842 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
4843 for (i = 0; i < parser->crc_fields; ++i) {
4844 if (!ast_istype(parser->fields[i], ast_value))
4846 value = (ast_value*)(parser->fields[i]);
4847 switch (value->expression.next->expression.vtype) {
4848 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
4849 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
4850 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
4851 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
4853 crc = progdefs_crc_both(crc, "\tint\t");
4856 crc = progdefs_crc_both(crc, value->name);
4857 crc = progdefs_crc_both(crc, ";\n");
4859 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
4864 static parser_t *parser;
4870 parser = (parser_t*)mem_a(sizeof(parser_t));
4874 memset(parser, 0, sizeof(*parser));
4876 for (i = 0; i < operator_count; ++i) {
4877 if (operators[i].id == opid1('=')) {
4878 parser->assign_op = operators+i;
4882 if (!parser->assign_op) {
4883 printf("internal error: initializing parser: failed to find assign operator\n");
4888 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
4889 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
4890 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
4891 vec_push(parser->_blocktypedefs, 0);
4895 bool parser_compile()
4897 /* initial lexer/parser state */
4898 parser->lex->flags.noops = true;
4900 if (parser_next(parser))
4902 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
4904 if (!parser_global_statement(parser)) {
4905 if (parser->tok == TOKEN_EOF)
4906 parseerror(parser, "unexpected eof");
4907 else if (compile_errors)
4908 parseerror(parser, "there have been errors, bailing out");
4909 lex_close(parser->lex);
4915 parseerror(parser, "parse error");
4916 lex_close(parser->lex);
4921 lex_close(parser->lex);
4924 return !compile_errors;
4927 bool parser_compile_file(const char *filename)
4929 parser->lex = lex_open(filename);
4931 con_err("failed to open file \"%s\"\n", filename);
4934 return parser_compile();
4937 bool parser_compile_string(const char *name, const char *str, size_t len)
4939 parser->lex = lex_open_string(str, len, name);
4941 con_err("failed to create lexer for string \"%s\"\n", name);
4944 return parser_compile();
4947 void parser_cleanup()
4950 for (i = 0; i < vec_size(parser->accessors); ++i) {
4951 ast_delete(parser->accessors[i]->constval.vfunc);
4952 parser->accessors[i]->constval.vfunc = NULL;
4953 ast_delete(parser->accessors[i]);
4955 for (i = 0; i < vec_size(parser->functions); ++i) {
4956 ast_delete(parser->functions[i]);
4958 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
4959 ast_delete(parser->imm_vector[i]);
4961 for (i = 0; i < vec_size(parser->imm_string); ++i) {
4962 ast_delete(parser->imm_string[i]);
4964 for (i = 0; i < vec_size(parser->imm_float); ++i) {
4965 ast_delete(parser->imm_float[i]);
4967 for (i = 0; i < vec_size(parser->fields); ++i) {
4968 ast_delete(parser->fields[i]);
4970 for (i = 0; i < vec_size(parser->globals); ++i) {
4971 ast_delete(parser->globals[i]);
4973 vec_free(parser->accessors);
4974 vec_free(parser->functions);
4975 vec_free(parser->imm_vector);
4976 vec_free(parser->imm_string);
4977 vec_free(parser->imm_float);
4978 vec_free(parser->globals);
4979 vec_free(parser->fields);
4981 for (i = 0; i < vec_size(parser->variables); ++i)
4982 util_htdel(parser->variables[i]);
4983 vec_free(parser->variables);
4984 vec_free(parser->_blocklocals);
4985 vec_free(parser->_locals);
4987 for (i = 0; i < vec_size(parser->_typedefs); ++i)
4988 ast_delete(parser->_typedefs[i]);
4989 vec_free(parser->_typedefs);
4990 for (i = 0; i < vec_size(parser->typedefs); ++i)
4991 util_htdel(parser->typedefs[i]);
4992 vec_free(parser->typedefs);
4993 vec_free(parser->_blocktypedefs);
4995 vec_free(parser->_block_ctx);
4997 vec_free(parser->labels);
4998 vec_free(parser->gotos);
4999 vec_free(parser->breaks);
5000 vec_free(parser->continues);
5005 bool parser_finish(const char *output)
5011 if (compile_errors) {
5012 con_out("*** there were compile errors\n");
5016 ir = ir_builder_new("gmqcc_out");
5018 con_out("failed to allocate builder\n");
5022 for (i = 0; i < vec_size(parser->fields); ++i) {
5025 if (!ast_istype(parser->fields[i], ast_value))
5027 field = (ast_value*)parser->fields[i];
5028 hasvalue = field->hasvalue;
5029 field->hasvalue = false;
5030 if (!ast_global_codegen((ast_value*)field, ir, true)) {
5031 con_out("failed to generate field %s\n", field->name);
5032 ir_builder_delete(ir);
5037 ast_expression *subtype;
5038 field->hasvalue = true;
5039 subtype = field->expression.next;
5040 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
5041 if (subtype->expression.vtype == TYPE_FIELD)
5042 ifld->fieldtype = subtype->expression.next->expression.vtype;
5043 else if (subtype->expression.vtype == TYPE_FUNCTION)
5044 ifld->outtype = subtype->expression.next->expression.vtype;
5045 (void)!ir_value_set_field(field->ir_v, ifld);
5048 for (i = 0; i < vec_size(parser->globals); ++i) {
5050 if (!ast_istype(parser->globals[i], ast_value))
5052 asvalue = (ast_value*)(parser->globals[i]);
5053 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
5054 retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
5055 "unused global: `%s`", asvalue->name);
5057 if (!ast_global_codegen(asvalue, ir, false)) {
5058 con_out("failed to generate global %s\n", asvalue->name);
5059 ir_builder_delete(ir);
5063 for (i = 0; i < vec_size(parser->imm_float); ++i) {
5064 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
5065 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
5066 ir_builder_delete(ir);
5070 for (i = 0; i < vec_size(parser->imm_string); ++i) {
5071 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
5072 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
5073 ir_builder_delete(ir);
5077 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
5078 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
5079 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
5080 ir_builder_delete(ir);
5084 for (i = 0; i < vec_size(parser->globals); ++i) {
5086 if (!ast_istype(parser->globals[i], ast_value))
5088 asvalue = (ast_value*)(parser->globals[i]);
5089 if (!ast_generate_accessors(asvalue, ir)) {
5090 ir_builder_delete(ir);
5094 for (i = 0; i < vec_size(parser->fields); ++i) {
5096 asvalue = (ast_value*)(parser->fields[i]->expression.next);
5098 if (!ast_istype((ast_expression*)asvalue, ast_value))
5100 if (asvalue->expression.vtype != TYPE_ARRAY)
5102 if (!ast_generate_accessors(asvalue, ir)) {
5103 ir_builder_delete(ir);
5107 for (i = 0; i < vec_size(parser->functions); ++i) {
5108 if (!ast_function_codegen(parser->functions[i], ir)) {
5109 con_out("failed to generate function %s\n", parser->functions[i]->name);
5110 ir_builder_delete(ir);
5115 ir_builder_dump(ir, con_out);
5116 for (i = 0; i < vec_size(parser->functions); ++i) {
5117 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
5118 con_out("failed to finalize function %s\n", parser->functions[i]->name);
5119 ir_builder_delete(ir);
5124 if (compile_Werrors) {
5125 con_out("*** there were warnings treated as errors\n");
5126 compile_show_werrors();
5132 ir_builder_dump(ir, con_out);
5134 generate_checksum(parser);
5136 if (!ir_builder_generate(ir, output)) {
5137 con_out("*** failed to generate output file\n");
5138 ir_builder_delete(ir);
5143 ir_builder_delete(ir);