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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
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12 * The above copyright notice and this permission notice shall be included in all
13 * copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
29 #define PARSER_HT_FIELDS 0
30 #define PARSER_HT_GLOBALS 1
31 /* beginning of locals */
32 #define PARSER_HT_LOCALS 2
34 #define PARSER_HT_SIZE 1024
35 #define TYPEDEF_HT_SIZE 16
41 ast_expression **globals;
42 ast_expression **fields;
43 ast_function **functions;
44 ast_value **imm_float;
45 ast_value **imm_string;
46 ast_value **imm_vector;
49 /* must be deleted first, they reference immediates and values */
50 ast_value **accessors;
52 ast_value *imm_float_zero;
53 ast_value *imm_float_one;
54 ast_value *imm_vector_zero;
59 ast_function *function;
61 /* All the labels the function defined...
62 * Should they be in ast_function instead?
67 /* A list of hashtables for each scope */
73 /* not to be used directly, we use the hash table */
74 ast_expression **_locals;
76 ast_value **_typedefs;
77 size_t *_blocktypedefs;
82 /* we store the '=' operator info */
83 const oper_info *assign_op;
85 /* TYPE_FIELD -> parser_find_fields is used instead of find_var
86 * TODO: TYPE_VECTOR -> x, y and z are accepted in the gmqcc standard
87 * anything else: type error
91 /* Keep track of our ternary vs parenthesis nesting state.
92 * If we reach a 'comma' operator in a ternary without a paren,
93 * we shall trigger -Wternary-precedence.
95 enum { POT_PAREN, POT_TERNARY1, POT_TERNARY2 } *pot;
101 static const ast_expression *intrinsic_debug_typestring = (ast_expression*)0x10;
103 static void parser_enterblock(parser_t *parser);
104 static bool parser_leaveblock(parser_t *parser);
105 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e);
106 static bool parse_typedef(parser_t *parser);
107 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref, bool noreturn);
108 static ast_block* parse_block(parser_t *parser);
109 static bool parse_block_into(parser_t *parser, ast_block *block);
110 static bool parse_statement_or_block(parser_t *parser, ast_expression **out);
111 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases);
112 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma);
113 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma);
115 static void parseerror(parser_t *parser, const char *fmt, ...)
122 con_vprintmsg(LVL_ERROR, parser->lex->tok.ctx.file, parser->lex->tok.ctx.line, "parse error", fmt, ap);
126 /* returns true if it counts as an error */
127 static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
132 r = vcompile_warning(parser->lex->tok.ctx, warntype, fmt, ap);
137 static bool GMQCC_WARN genwarning(lex_ctx ctx, int warntype, const char *fmt, ...)
142 r = vcompile_warning(ctx, warntype, fmt, ap);
147 /**********************************************************************
148 * some maths used for constant folding
151 vector vec3_add(vector a, vector b)
160 vector vec3_sub(vector a, vector b)
169 qcfloat vec3_mulvv(vector a, vector b)
171 return (a.x * b.x + a.y * b.y + a.z * b.z);
174 vector vec3_mulvf(vector a, float b)
183 /**********************************************************************
187 bool parser_next(parser_t *parser)
189 /* lex_do kills the previous token */
190 parser->tok = lex_do(parser->lex);
191 if (parser->tok == TOKEN_EOF)
193 if (parser->tok >= TOKEN_ERROR) {
194 parseerror(parser, "lex error");
200 #define parser_tokval(p) ((p)->lex->tok.value)
201 #define parser_token(p) (&((p)->lex->tok))
202 #define parser_ctx(p) ((p)->lex->tok.ctx)
204 static ast_value* parser_const_float(parser_t *parser, double d)
208 for (i = 0; i < vec_size(parser->imm_float); ++i) {
209 const double compare = parser->imm_float[i]->constval.vfloat;
210 if (memcmp((const void*)&compare, (const void *)&d, sizeof(double)) == 0)
211 return parser->imm_float[i];
213 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_FLOAT);
215 out->hasvalue = true;
216 out->constval.vfloat = d;
217 vec_push(parser->imm_float, out);
221 static ast_value* parser_const_float_0(parser_t *parser)
223 if (!parser->imm_float_zero)
224 parser->imm_float_zero = parser_const_float(parser, 0);
225 return parser->imm_float_zero;
228 static ast_value* parser_const_float_1(parser_t *parser)
230 if (!parser->imm_float_one)
231 parser->imm_float_one = parser_const_float(parser, 1);
232 return parser->imm_float_one;
235 static char *parser_strdup(const char *str)
238 /* actually dup empty strings */
239 char *out = mem_a(1);
243 return util_strdup(str);
246 static ast_value* parser_const_string(parser_t *parser, const char *str, bool dotranslate)
250 for (i = 0; i < vec_size(parser->imm_string); ++i) {
251 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
252 return parser->imm_string[i];
256 snprintf(name, sizeof(name), "dotranslate_%lu", (unsigned long)(parser->translated++));
257 out = ast_value_new(parser_ctx(parser), name, TYPE_STRING);
259 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
261 out->hasvalue = true;
262 out->constval.vstring = parser_strdup(str);
263 vec_push(parser->imm_string, out);
267 static ast_value* parser_const_vector(parser_t *parser, vector v)
271 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
272 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
273 return parser->imm_vector[i];
275 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
277 out->hasvalue = true;
278 out->constval.vvec = v;
279 vec_push(parser->imm_vector, out);
283 static ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
289 return parser_const_vector(parser, v);
292 static ast_value* parser_const_vector_0(parser_t *parser)
294 if (!parser->imm_vector_zero)
295 parser->imm_vector_zero = parser_const_vector_f(parser, 0, 0, 0);
296 return parser->imm_vector_zero;
299 static ast_expression* parser_find_field(parser_t *parser, const char *name)
301 return util_htget(parser->htfields, name);
304 static ast_expression* parser_find_global(parser_t *parser, const char *name)
306 return util_htget(parser->htglobals, name);
309 static ast_expression* parser_find_param(parser_t *parser, const char *name)
313 if (!parser->function)
315 fun = parser->function->vtype;
316 for (i = 0; i < vec_size(fun->expression.params); ++i) {
317 if (!strcmp(fun->expression.params[i]->name, name))
318 return (ast_expression*)(fun->expression.params[i]);
323 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
328 hash = util_hthash(parser->htglobals, name);
331 for (i = vec_size(parser->variables); i > upto;) {
333 if ( (e = util_htgeth(parser->variables[i], name, hash)) )
337 return parser_find_param(parser, name);
340 static ast_expression* parser_find_var(parser_t *parser, const char *name)
344 v = parser_find_local(parser, name, 0, &dummy);
345 if (!v) v = parser_find_global(parser, name);
349 static ast_value* parser_find_typedef(parser_t *parser, const char *name, size_t upto)
353 hash = util_hthash(parser->typedefs[0], name);
355 for (i = vec_size(parser->typedefs); i > upto;) {
357 if ( (e = (ast_value*)util_htgeth(parser->typedefs[i], name, hash)) )
365 size_t etype; /* 0 = expression, others are operators */
369 ast_block *block; /* for commas and function calls */
378 #define SY_PAREN_EXPR '('
379 #define SY_PAREN_FUNC 'f'
380 #define SY_PAREN_INDEX '['
381 #define SY_PAREN_TERNARY '?'
383 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
394 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
398 e.out = (ast_expression*)v;
405 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
407 e.etype = 1 + (op - operators);
416 static sy_elem syparen(lex_ctx ctx, int p, size_t off) {
428 # define DEBUGSHUNTDO(x) x
430 # define DEBUGSHUNTDO(x)
433 /* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
434 * so we need to rotate it to become ent.(foo[n]).
436 static bool rotate_entfield_array_index_nodes(ast_expression **out)
438 ast_array_index *index;
439 ast_entfield *entfield;
443 ast_expression *entity;
445 lex_ctx ctx = ast_ctx(*out);
447 if (!ast_istype(*out, ast_array_index))
449 index = (ast_array_index*)*out;
451 if (!ast_istype(index->array, ast_entfield))
453 entfield = (ast_entfield*)index->array;
455 if (!ast_istype(entfield->field, ast_value))
457 field = (ast_value*)entfield->field;
460 entity = entfield->entity;
464 index = ast_array_index_new(ctx, (ast_expression*)field, sub);
465 entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
466 *out = (ast_expression*)entfield;
471 static bool parser_sy_apply_operator(parser_t *parser, shunt *sy)
475 ast_expression *out = NULL;
476 ast_expression *exprs[3];
477 ast_block *blocks[3];
478 ast_value *asvalue[3];
479 ast_binstore *asbinstore;
480 size_t i, assignop, addop, subop;
481 qcint generated_op = 0;
486 if (!vec_size(sy->ops)) {
487 parseerror(parser, "internal error: missing operator");
491 if (vec_last(sy->ops).paren) {
492 parseerror(parser, "unmatched parenthesis");
496 op = &operators[vec_last(sy->ops).etype - 1];
497 ctx = vec_last(sy->ops).ctx;
499 DEBUGSHUNTDO(con_out("apply %s\n", op->op));
501 if (vec_size(sy->out) < op->operands) {
502 parseerror(parser, "internal error: not enough operands: %i (operator %s (%i))", vec_size(sy->out),
503 op->op, (int)op->id);
507 vec_shrinkby(sy->ops, 1);
509 /* op(:?) has no input and no output */
513 vec_shrinkby(sy->out, op->operands);
514 for (i = 0; i < op->operands; ++i) {
515 exprs[i] = sy->out[vec_size(sy->out)+i].out;
516 blocks[i] = sy->out[vec_size(sy->out)+i].block;
517 asvalue[i] = (ast_value*)exprs[i];
520 if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
521 parseerror(parser, "internal error: operator cannot be applied on empty blocks");
525 #define NotSameType(T) \
526 (exprs[0]->expression.vtype != exprs[1]->expression.vtype || \
527 exprs[0]->expression.vtype != T)
528 #define CanConstFold1(A) \
529 (ast_istype((A), ast_value) && ((ast_value*)(A))->hasvalue && (((ast_value*)(A))->cvq == CV_CONST))
530 #define CanConstFold(A, B) \
531 (CanConstFold1(A) && CanConstFold1(B))
532 #define ConstV(i) (asvalue[(i)]->constval.vvec)
533 #define ConstF(i) (asvalue[(i)]->constval.vfloat)
534 #define ConstS(i) (asvalue[(i)]->constval.vstring)
538 parseerror(parser, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
542 if (exprs[0]->expression.vtype == TYPE_ENTITY) {
543 if (exprs[1]->expression.vtype != TYPE_FIELD) {
544 parseerror(parser, "type error: right hand of member-operand should be an entity-field");
547 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
549 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
550 parseerror(parser, "internal error: vector access is not supposed to be handled at this point");
554 parseerror(parser, "type error: member-of operator on something that is not an entity or vector");
560 if (exprs[0]->expression.vtype != TYPE_ARRAY &&
561 !(exprs[0]->expression.vtype == TYPE_FIELD &&
562 exprs[0]->expression.next->expression.vtype == TYPE_ARRAY))
564 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
565 parseerror(parser, "cannot index value of type %s", ty1);
568 if (exprs[1]->expression.vtype != TYPE_FLOAT) {
569 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
570 parseerror(parser, "index must be of type float, not %s", ty1);
573 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
574 if (rotate_entfield_array_index_nodes(&out))
577 /* This is not broken in fteqcc anymore */
578 if (opts.standard != COMPILER_GMQCC) {
579 /* this error doesn't need to make us bail out */
580 (void)!parsewarning(parser, WARN_EXTENSIONS,
581 "accessing array-field members of an entity without parenthesis\n"
582 " -> this is an extension from -std=gmqcc");
590 if (!ast_block_add_expr(blocks[0], exprs[1]))
593 blocks[0] = ast_block_new(ctx);
594 if (!ast_block_add_expr(blocks[0], exprs[0]) ||
595 !ast_block_add_expr(blocks[0], exprs[1]))
600 if (!ast_block_set_type(blocks[0], exprs[1]))
603 vec_push(sy->out, syblock(ctx, blocks[0]));
610 switch (exprs[0]->expression.vtype) {
612 if (CanConstFold1(exprs[0]))
613 out = (ast_expression*)parser_const_float(parser, -ConstF(0));
615 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
616 (ast_expression*)parser_const_float_0(parser),
620 if (CanConstFold1(exprs[0]))
621 out = (ast_expression*)parser_const_vector_f(parser,
622 -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
624 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
625 (ast_expression*)parser_const_vector_0(parser),
629 parseerror(parser, "invalid types used in expression: cannot negate type %s",
630 type_name[exprs[0]->expression.vtype]);
636 switch (exprs[0]->expression.vtype) {
638 if (CanConstFold1(exprs[0]))
639 out = (ast_expression*)parser_const_float(parser, !ConstF(0));
641 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
644 if (CanConstFold1(exprs[0]))
645 out = (ast_expression*)parser_const_float(parser,
646 (!ConstV(0).x && !ConstV(0).y && !ConstV(0).z));
648 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
651 if (CanConstFold1(exprs[0])) {
652 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
653 out = (ast_expression*)parser_const_float(parser, !ConstS(0));
655 out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
657 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
658 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
660 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
663 /* we don't constant-fold NOT for these types */
665 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
668 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
671 parseerror(parser, "invalid types used in expression: cannot logically negate type %s",
672 type_name[exprs[0]->expression.vtype]);
678 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
679 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
681 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
682 type_name[exprs[0]->expression.vtype],
683 type_name[exprs[1]->expression.vtype]);
686 switch (exprs[0]->expression.vtype) {
688 if (CanConstFold(exprs[0], exprs[1]))
690 out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
693 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
696 if (CanConstFold(exprs[0], exprs[1]))
697 out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
699 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
702 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
703 type_name[exprs[0]->expression.vtype],
704 type_name[exprs[1]->expression.vtype]);
709 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
710 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
712 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
713 type_name[exprs[1]->expression.vtype],
714 type_name[exprs[0]->expression.vtype]);
717 switch (exprs[0]->expression.vtype) {
719 if (CanConstFold(exprs[0], exprs[1]))
720 out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
722 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
725 if (CanConstFold(exprs[0], exprs[1]))
726 out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
728 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
731 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
732 type_name[exprs[1]->expression.vtype],
733 type_name[exprs[0]->expression.vtype]);
738 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
739 exprs[0]->expression.vtype != TYPE_VECTOR &&
740 exprs[0]->expression.vtype != TYPE_FLOAT &&
741 exprs[1]->expression.vtype != TYPE_VECTOR &&
742 exprs[1]->expression.vtype != TYPE_FLOAT)
744 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
745 type_name[exprs[1]->expression.vtype],
746 type_name[exprs[0]->expression.vtype]);
749 switch (exprs[0]->expression.vtype) {
751 if (exprs[1]->expression.vtype == TYPE_VECTOR)
753 if (CanConstFold(exprs[0], exprs[1]))
754 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
756 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
760 if (CanConstFold(exprs[0], exprs[1]))
761 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
763 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
767 if (exprs[1]->expression.vtype == TYPE_FLOAT)
769 if (CanConstFold(exprs[0], exprs[1]))
770 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
772 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
776 if (CanConstFold(exprs[0], exprs[1]))
777 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
779 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
783 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
784 type_name[exprs[1]->expression.vtype],
785 type_name[exprs[0]->expression.vtype]);
790 if (NotSameType(TYPE_FLOAT)) {
791 parseerror(parser, "invalid types used in expression: cannot divide types %s and %s",
792 type_name[exprs[0]->expression.vtype],
793 type_name[exprs[1]->expression.vtype]);
796 if (CanConstFold(exprs[0], exprs[1]))
797 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
799 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
803 parseerror(parser, "qc does not have a modulo operator");
807 if (NotSameType(TYPE_FLOAT)) {
808 parseerror(parser, "invalid types used in expression: cannot perform bit operations between types %s and %s",
809 type_name[exprs[0]->expression.vtype],
810 type_name[exprs[1]->expression.vtype]);
813 if (CanConstFold(exprs[0], exprs[1]))
814 out = (ast_expression*)parser_const_float(parser,
815 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
816 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
818 out = (ast_expression*)ast_binary_new(ctx,
819 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
823 parseerror(parser, "TODO: bitxor");
828 case opid3('<','<','='):
829 case opid3('>','>','='):
830 parseerror(parser, "TODO: shifts");
834 generated_op += 1; /* INSTR_OR */
836 generated_op += INSTR_AND;
838 if (NotSameType(TYPE_FLOAT)) {
839 parseerror(parser, "invalid types used in expression: cannot perform logical operations between types %s and %s",
840 type_name[exprs[0]->expression.vtype],
841 type_name[exprs[1]->expression.vtype]);
842 parseerror(parser, "TODO: logical ops for arbitrary types using INSTR_NOT");
843 parseerror(parser, "TODO: optional early out");
847 if (CanConstFold(exprs[0], exprs[1]))
849 out = (ast_expression*)parser_const_float(parser,
850 (generated_op == INSTR_OR ? (ConstF(0) || ConstF(1)) : (ConstF(0) && ConstF(1))));
854 if (OPTS_FLAG(PERL_LOGIC) && !ast_compare_type(exprs[0], exprs[1])) {
855 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
856 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
857 parseerror(parser, "invalid types for logical operation with -fperl-logic: %s and %s", ty1, ty2);
860 if (OPTS_FLAG(CORRECT_LOGIC)) {
861 /* non-floats need to be NOTed */
862 for (i = 0; i < 2; ++i) {
863 if (exprs[i]->expression.vtype != TYPE_FLOAT) {
864 if (type_not_instr[exprs[i]->expression.vtype] == AINSTR_END) {
865 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
866 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
867 parseerror(parser, "invalid types for logical operation with -fcorrect-logic: %s and %s", ty1, ty2);
870 out = (ast_expression*)ast_unary_new(ctx, type_not_instr[exprs[i]->expression.vtype], exprs[i]);
873 exprs[i] = out; out = NULL;
875 if (OPTS_FLAG(PERL_LOGIC))
879 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
884 if (vec_last(parser->pot) != POT_TERNARY2) {
885 parseerror(parser, "mismatched parenthesis/ternary");
888 vec_pop(parser->pot);
889 if (exprs[1]->expression.vtype != exprs[2]->expression.vtype) {
890 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
891 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
892 parseerror(parser, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
895 if (CanConstFold1(exprs[0]))
896 out = (ConstF(0) ? exprs[1] : exprs[2]);
898 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
902 generated_op += 1; /* INSTR_GT */
904 generated_op += 1; /* INSTR_LT */
905 case opid2('>', '='):
906 generated_op += 1; /* INSTR_GE */
907 case opid2('<', '='):
908 generated_op += INSTR_LE;
909 if (NotSameType(TYPE_FLOAT)) {
910 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
911 type_name[exprs[0]->expression.vtype],
912 type_name[exprs[1]->expression.vtype]);
915 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
917 case opid2('!', '='):
918 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
919 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
920 type_name[exprs[0]->expression.vtype],
921 type_name[exprs[1]->expression.vtype]);
924 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
926 case opid2('=', '='):
927 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
928 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
929 type_name[exprs[0]->expression.vtype],
930 type_name[exprs[1]->expression.vtype]);
933 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
937 if (ast_istype(exprs[0], ast_entfield)) {
938 ast_expression *field = ((ast_entfield*)exprs[0])->field;
939 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
940 exprs[0]->expression.vtype == TYPE_FIELD &&
941 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
943 assignop = type_storep_instr[TYPE_VECTOR];
946 assignop = type_storep_instr[exprs[0]->expression.vtype];
947 if (assignop == AINSTR_END ||
948 !ast_compare_type(field->expression.next, exprs[1]))
950 ast_type_to_string(field->expression.next, ty1, sizeof(ty1));
951 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
952 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
953 field->expression.next->expression.vtype == TYPE_FUNCTION &&
954 exprs[1]->expression.vtype == TYPE_FUNCTION)
956 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
957 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
963 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
968 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
969 exprs[0]->expression.vtype == TYPE_FIELD &&
970 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
972 assignop = type_store_instr[TYPE_VECTOR];
975 assignop = type_store_instr[exprs[0]->expression.vtype];
978 if (assignop == AINSTR_END) {
979 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
980 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
981 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
983 else if (!ast_compare_type(exprs[0], exprs[1])) {
984 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
985 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
986 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
987 exprs[0]->expression.vtype == TYPE_FUNCTION &&
988 exprs[1]->expression.vtype == TYPE_FUNCTION)
990 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
991 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
997 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1000 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1001 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1003 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
1005 case opid3('+','+','P'):
1006 case opid3('-','-','P'):
1008 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1009 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1010 parseerror(parser, "invalid type for prefix increment: %s", ty1);
1013 if (op->id == opid3('+','+','P'))
1014 addop = INSTR_ADD_F;
1016 addop = INSTR_SUB_F;
1017 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1018 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1020 if (ast_istype(exprs[0], ast_entfield)) {
1021 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1023 (ast_expression*)parser_const_float_1(parser));
1025 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1027 (ast_expression*)parser_const_float_1(parser));
1030 case opid3('S','+','+'):
1031 case opid3('S','-','-'):
1033 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1034 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1035 parseerror(parser, "invalid type for suffix increment: %s", ty1);
1038 if (op->id == opid3('S','+','+')) {
1039 addop = INSTR_ADD_F;
1040 subop = INSTR_SUB_F;
1042 addop = INSTR_SUB_F;
1043 subop = INSTR_ADD_F;
1045 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1046 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1048 if (ast_istype(exprs[0], ast_entfield)) {
1049 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1051 (ast_expression*)parser_const_float_1(parser));
1053 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1055 (ast_expression*)parser_const_float_1(parser));
1059 out = (ast_expression*)ast_binary_new(ctx, subop,
1061 (ast_expression*)parser_const_float_1(parser));
1063 case opid2('+','='):
1064 case opid2('-','='):
1065 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
1066 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
1068 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1069 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1070 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1074 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1075 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1077 if (ast_istype(exprs[0], ast_entfield))
1078 assignop = type_storep_instr[exprs[0]->expression.vtype];
1080 assignop = type_store_instr[exprs[0]->expression.vtype];
1081 switch (exprs[0]->expression.vtype) {
1083 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1084 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
1085 exprs[0], exprs[1]);
1088 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1089 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1090 exprs[0], exprs[1]);
1093 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1094 type_name[exprs[0]->expression.vtype],
1095 type_name[exprs[1]->expression.vtype]);
1099 case opid2('*','='):
1100 case opid2('/','='):
1101 if (exprs[1]->expression.vtype != TYPE_FLOAT ||
1102 !(exprs[0]->expression.vtype == TYPE_FLOAT ||
1103 exprs[0]->expression.vtype == TYPE_VECTOR))
1105 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1106 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1107 parseerror(parser, "invalid types used in expression: %s and %s",
1111 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1112 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1114 if (ast_istype(exprs[0], ast_entfield))
1115 assignop = type_storep_instr[exprs[0]->expression.vtype];
1117 assignop = type_store_instr[exprs[0]->expression.vtype];
1118 switch (exprs[0]->expression.vtype) {
1120 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1121 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1122 exprs[0], exprs[1]);
1125 if (op->id == opid2('*','=')) {
1126 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1127 exprs[0], exprs[1]);
1129 /* there's no DIV_VF */
1130 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
1131 (ast_expression*)parser_const_float_1(parser),
1135 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1140 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1141 type_name[exprs[0]->expression.vtype],
1142 type_name[exprs[1]->expression.vtype]);
1146 case opid2('&','='):
1147 case opid2('|','='):
1148 if (NotSameType(TYPE_FLOAT)) {
1149 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1150 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1151 parseerror(parser, "invalid types used in expression: %s and %s",
1155 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1156 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1158 if (ast_istype(exprs[0], ast_entfield))
1159 assignop = type_storep_instr[exprs[0]->expression.vtype];
1161 assignop = type_store_instr[exprs[0]->expression.vtype];
1162 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1163 (op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1164 exprs[0], exprs[1]);
1166 case opid3('&','~','='):
1167 /* This is like: a &= ~(b);
1168 * But QC has no bitwise-not, so we implement it as
1171 if (NotSameType(TYPE_FLOAT)) {
1172 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1173 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1174 parseerror(parser, "invalid types used in expression: %s and %s",
1178 if (ast_istype(exprs[0], ast_entfield))
1179 assignop = type_storep_instr[exprs[0]->expression.vtype];
1181 assignop = type_store_instr[exprs[0]->expression.vtype];
1182 out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1185 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1186 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1188 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1189 asbinstore->keep_dest = true;
1190 out = (ast_expression*)asbinstore;
1196 parseerror(parser, "failed to apply operand %s", op->op);
1200 DEBUGSHUNTDO(con_out("applied %s\n", op->op));
1201 vec_push(sy->out, syexp(ctx, out));
1205 static bool parser_close_call(parser_t *parser, shunt *sy)
1207 /* was a function call */
1208 ast_expression *fun;
1214 vec_shrinkby(sy->ops, 1);
1215 fid = sy->ops[vec_size(sy->ops)].off;
1217 /* out[fid] is the function
1218 * everything above is parameters...
1219 * 0 params = nothing
1220 * 1 params = ast_expression
1224 if (vec_size(sy->out) < 1 || vec_size(sy->out) <= fid) {
1225 parseerror(parser, "internal error: function call needs function and parameter list...");
1229 fun = sy->out[fid].out;
1231 if (fun == intrinsic_debug_typestring) {
1233 if (fid+2 != vec_size(sy->out) ||
1234 vec_last(sy->out).block)
1236 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1239 ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
1240 ast_unref(vec_last(sy->out).out);
1241 sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
1242 (ast_expression*)parser_const_string(parser, ty, false));
1243 vec_shrinkby(sy->out, 1);
1247 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1249 parseerror(parser, "internal error: failed to create ast_call node");
1253 if (fid+1 == vec_size(sy->out)) {
1256 } else if (fid+2 == vec_size(sy->out)) {
1258 vec_shrinkby(sy->out, 1);
1259 params = sy->out[vec_size(sy->out)].block;
1263 vec_push(call->params, sy->out[vec_size(sy->out)].out);
1265 paramcount = vec_size(params->exprs);
1266 call->params = params->exprs;
1267 params->exprs = NULL;
1270 if (!ast_call_check_types(call))
1273 parseerror(parser, "invalid function call");
1277 /* overwrite fid, the function, with a call */
1278 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1280 if (fun->expression.vtype != TYPE_FUNCTION) {
1281 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
1285 if (!fun->expression.next) {
1286 parseerror(parser, "could not determine function return type");
1289 if (vec_size(fun->expression.params) != paramcount &&
1290 !((fun->expression.flags & AST_FLAG_VARIADIC) &&
1291 vec_size(fun->expression.params) < paramcount))
1294 const char *fewmany = (vec_size(fun->expression.params) > paramcount) ? "few" : "many";
1296 fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1297 if (opts.standard == COMPILER_GMQCC)
1300 parseerror(parser, "too %s parameters for call to %s: expected %i, got %i\n"
1301 " -> `%s` has been declared here: %s:%i",
1302 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1303 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1305 parseerror(parser, "too %s parameters for function call: expected %i, got %i\n"
1306 " -> it has been declared here: %s:%i",
1307 fewmany, (int)vec_size(fun->expression.params), (int)paramcount,
1308 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1314 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1315 "too %s parameters for call to %s: expected %i, got %i\n"
1316 " -> `%s` has been declared here: %s:%i",
1317 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1318 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1320 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1321 "too %s parameters for function call: expected %i, got %i\n"
1322 " -> it has been declared here: %s:%i",
1323 fewmany, (int)vec_size(fun->expression.params), (int)paramcount,
1324 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1332 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
1334 if (!vec_size(sy->ops)) {
1335 parseerror(parser, "unmatched closing paren");
1338 /* this would for bit a + (x) because there are no operators inside (x)
1339 if (sy->ops[vec_size(sy->ops)-1].paren == 1) {
1340 parseerror(parser, "empty parenthesis expression");
1344 while (vec_size(sy->ops)) {
1345 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_FUNC) {
1346 if (!parser_close_call(parser, sy))
1350 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_EXPR) {
1351 vec_shrinkby(sy->ops, 1);
1352 return !functions_only;
1354 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_INDEX) {
1357 /* pop off the parenthesis */
1358 vec_shrinkby(sy->ops, 1);
1359 /* then apply the index operator */
1360 if (!parser_sy_apply_operator(parser, sy))
1364 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_TERNARY) {
1367 if (vec_last(parser->pot) != POT_TERNARY1) {
1368 parseerror(parser, "mismatched colon in ternary expression (missing closing paren?)");
1371 vec_last(parser->pot) = POT_TERNARY2;
1372 /* pop off the parenthesis */
1373 vec_shrinkby(sy->ops, 1);
1376 if (!parser_sy_apply_operator(parser, sy))
1382 static void parser_reclassify_token(parser_t *parser)
1385 for (i = 0; i < operator_count; ++i) {
1386 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1387 parser->tok = TOKEN_OPERATOR;
1393 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma)
1395 ast_expression *expr = NULL;
1397 bool wantop = false;
1398 bool gotmemberof = false;
1400 /* count the parens because an if starts with one, so the
1401 * end of a condition is an unmatched closing paren
1409 parser->lex->flags.noops = false;
1411 parser_reclassify_token(parser);
1416 gotmemberof = false;
1418 parser->memberof = 0;
1420 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1421 parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "_"))
1423 /* a translatable string */
1427 parseerror(parser, "expected operator or end of statement, got constant");
1431 parser->lex->flags.noops = true;
1432 if (!parser_next(parser) || parser->tok != '(') {
1433 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1436 parser->lex->flags.noops = false;
1437 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1438 parseerror(parser, "expected a constant string in translatable-string extension");
1441 val = parser_const_string(parser, parser_tokval(parser), true);
1445 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1446 DEBUGSHUNTDO(con_out("push string\n"));
1448 if (!parser_next(parser) || parser->tok != ')') {
1449 parseerror(parser, "expected closing paren after translatable string");
1453 else if (parser->tok == TOKEN_IDENT)
1455 ast_expression *var;
1457 parseerror(parser, "expected operator or end of statement");
1462 if (opts.standard == COMPILER_GMQCC)
1464 if (parser->memberof == TYPE_ENTITY) {
1465 /* still get vars first since there could be a fieldpointer */
1466 var = parser_find_var(parser, parser_tokval(parser));
1468 var = parser_find_field(parser, parser_tokval(parser));
1470 else if (parser->memberof == TYPE_VECTOR)
1472 parseerror(parser, "TODO: implement effective vector member access");
1475 else if (parser->memberof) {
1476 parseerror(parser, "namespace for member not found");
1480 var = parser_find_var(parser, parser_tokval(parser));
1482 var = parser_find_var(parser, parser_tokval(parser));
1484 var = parser_find_field(parser, parser_tokval(parser));
1488 if (!strcmp(parser_tokval(parser), "__builtin_debug_typestring")) {
1489 var = (ast_expression*)intrinsic_debug_typestring;
1494 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1500 if (ast_istype(var, ast_value)) {
1501 ((ast_value*)var)->uses++;
1503 else if (ast_istype(var, ast_member)) {
1504 ast_member *mem = (ast_member*)var;
1505 if (ast_istype(mem->owner, ast_value))
1506 ((ast_value*)(mem->owner))->uses++;
1509 vec_push(sy.out, syexp(parser_ctx(parser), var));
1510 DEBUGSHUNTDO(con_out("push %s\n", parser_tokval(parser)));
1512 else if (parser->tok == TOKEN_FLOATCONST) {
1515 parseerror(parser, "expected operator or end of statement, got constant");
1519 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1522 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1523 DEBUGSHUNTDO(con_out("push %g\n", parser_token(parser)->constval.f));
1525 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1528 parseerror(parser, "expected operator or end of statement, got constant");
1532 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1535 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1536 DEBUGSHUNTDO(con_out("push %i\n", parser_token(parser)->constval.i));
1538 else if (parser->tok == TOKEN_STRINGCONST) {
1541 parseerror(parser, "expected operator or end of statement, got constant");
1545 val = parser_const_string(parser, parser_tokval(parser), false);
1548 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1549 DEBUGSHUNTDO(con_out("push string\n"));
1551 else if (parser->tok == TOKEN_VECTORCONST) {
1554 parseerror(parser, "expected operator or end of statement, got constant");
1558 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1561 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1562 DEBUGSHUNTDO(con_out("push '%g %g %g'\n",
1563 parser_token(parser)->constval.v.x,
1564 parser_token(parser)->constval.v.y,
1565 parser_token(parser)->constval.v.z));
1567 else if (parser->tok == '(') {
1568 parseerror(parser, "internal error: '(' should be classified as operator");
1571 else if (parser->tok == '[') {
1572 parseerror(parser, "internal error: '[' should be classified as operator");
1575 else if (parser->tok == ')') {
1577 DEBUGSHUNTDO(con_out("do[op] )\n"));
1581 /* we do expect an operator next */
1582 /* closing an opening paren */
1583 if (!parser_close_paren(parser, &sy, false))
1585 if (vec_last(parser->pot) != POT_PAREN) {
1586 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1589 vec_pop(parser->pot);
1591 DEBUGSHUNTDO(con_out("do[nop] )\n"));
1595 /* allowed for function calls */
1596 if (!parser_close_paren(parser, &sy, true))
1598 if (vec_last(parser->pot) != POT_PAREN) {
1599 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1602 vec_pop(parser->pot);
1606 else if (parser->tok == ']') {
1608 parseerror(parser, "operand expected");
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);
1621 else if (parser->tok == TOKEN_TYPENAME) {
1622 parseerror(parser, "unexpected typename");
1625 else if (parser->tok != TOKEN_OPERATOR) {
1627 parseerror(parser, "expected operator or end of statement");
1634 /* classify the operator */
1635 const oper_info *op;
1636 const oper_info *olast = NULL;
1638 for (o = 0; o < operator_count; ++o) {
1639 if ((!(operators[o].flags & OP_PREFIX) == wantop) &&
1640 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1641 !strcmp(parser_tokval(parser), operators[o].op))
1646 if (o == operator_count) {
1647 /* no operator found... must be the end of the statement */
1650 /* found an operator */
1653 /* when declaring variables, a comma starts a new variable */
1654 if (op->id == opid1(',') && !parens && stopatcomma) {
1655 /* fixup the token */
1660 /* a colon without a pervious question mark cannot be a ternary */
1661 if (!ternaries && op->id == opid2(':','?')) {
1666 if (op->id == opid1(',')) {
1667 if (vec_size(parser->pot) && vec_last(parser->pot) == POT_TERNARY2) {
1668 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
1672 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1673 olast = &operators[vec_last(sy.ops).etype-1];
1676 (op->prec < olast->prec) ||
1677 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1679 if (!parser_sy_apply_operator(parser, &sy))
1681 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1682 olast = &operators[vec_last(sy.ops).etype-1];
1687 if (op->id == opid1('.') && opts.standard == COMPILER_GMQCC) {
1688 /* for gmqcc standard: open up the namespace of the previous type */
1689 ast_expression *prevex = vec_last(sy.out).out;
1691 parseerror(parser, "unexpected member operator");
1694 if (prevex->expression.vtype == TYPE_ENTITY)
1695 parser->memberof = TYPE_ENTITY;
1696 else if (prevex->expression.vtype == TYPE_VECTOR)
1697 parser->memberof = TYPE_VECTOR;
1699 parseerror(parser, "type error: type has no members");
1705 if (op->id == opid1('(')) {
1707 size_t sycount = vec_size(sy.out);
1708 DEBUGSHUNTDO(con_out("push [op] (\n"));
1709 ++parens; vec_push(parser->pot, POT_PAREN);
1710 /* we expected an operator, this is the function-call operator */
1711 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_FUNC, sycount-1));
1713 ++parens; vec_push(parser->pot, POT_PAREN);
1714 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_EXPR, 0));
1715 DEBUGSHUNTDO(con_out("push [nop] (\n"));
1718 } else if (op->id == opid1('[')) {
1720 parseerror(parser, "unexpected array subscript");
1723 ++parens; vec_push(parser->pot, POT_PAREN);
1724 /* push both the operator and the paren, this makes life easier */
1725 vec_push(sy.ops, syop(parser_ctx(parser), op));
1726 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_INDEX, 0));
1728 } else if (op->id == opid2('?',':')) {
1729 vec_push(sy.ops, syop(parser_ctx(parser), op));
1730 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_TERNARY, 0));
1733 vec_push(parser->pot, POT_TERNARY1);
1734 } else if (op->id == opid2(':','?')) {
1735 if (!vec_size(parser->pot)) {
1736 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1739 if (vec_last(parser->pot) != POT_TERNARY1) {
1740 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1743 if (!parser_close_paren(parser, &sy, false))
1745 vec_push(sy.ops, syop(parser_ctx(parser), op));
1749 DEBUGSHUNTDO(con_out("push operator %s\n", op->op));
1750 vec_push(sy.ops, syop(parser_ctx(parser), op));
1751 wantop = !!(op->flags & OP_SUFFIX);
1754 if (!parser_next(parser)) {
1757 if (parser->tok == ';' ||
1758 (!parens && parser->tok == ']'))
1764 while (vec_size(sy.ops)) {
1765 if (!parser_sy_apply_operator(parser, &sy))
1769 parser->lex->flags.noops = true;
1770 if (!vec_size(sy.out)) {
1771 parseerror(parser, "empty expression");
1774 expr = sy.out[0].out;
1777 DEBUGSHUNTDO(con_out("shunt done\n"));
1778 if (vec_size(parser->pot)) {
1779 parseerror(parser, "internal error: vec_size(parser->pot) = %lu", (unsigned long)vec_size(parser->pot));
1782 vec_free(parser->pot);
1786 parser->lex->flags.noops = true;
1792 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma)
1794 ast_expression *e = parse_expression_leave(parser, stopatcomma);
1797 if (!parser_next(parser)) {
1804 static void parser_enterblock(parser_t *parser)
1806 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
1807 vec_push(parser->_blocklocals, vec_size(parser->_locals));
1808 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
1809 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
1810 vec_push(parser->_block_ctx, parser_ctx(parser));
1813 static bool parser_leaveblock(parser_t *parser)
1816 size_t locals, typedefs;
1818 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
1819 parseerror(parser, "internal error: parser_leaveblock with no block");
1823 util_htdel(vec_last(parser->variables));
1824 vec_pop(parser->variables);
1825 if (!vec_size(parser->_blocklocals)) {
1826 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
1830 locals = vec_last(parser->_blocklocals);
1831 vec_pop(parser->_blocklocals);
1832 while (vec_size(parser->_locals) != locals) {
1833 ast_expression *e = vec_last(parser->_locals);
1834 ast_value *v = (ast_value*)e;
1835 vec_pop(parser->_locals);
1836 if (ast_istype(e, ast_value) && !v->uses) {
1837 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name)) {
1844 typedefs = vec_last(parser->_blocktypedefs);
1845 while (vec_size(parser->_typedefs) != typedefs) {
1846 ast_delete(vec_last(parser->_typedefs));
1847 vec_pop(parser->_typedefs);
1849 util_htdel(vec_last(parser->typedefs));
1850 vec_pop(parser->typedefs);
1852 vec_pop(parser->_block_ctx);
1856 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
1858 vec_push(parser->_locals, e);
1859 util_htset(vec_last(parser->variables), name, (void*)e);
1862 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
1865 ast_expression *cond, *ontrue, *onfalse = NULL;
1868 lex_ctx ctx = parser_ctx(parser);
1870 (void)block; /* not touching */
1872 /* skip the 'if', parse an optional 'not' and check for an opening paren */
1873 if (!parser_next(parser)) {
1874 parseerror(parser, "expected condition or 'not'");
1877 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
1879 if (!parser_next(parser)) {
1880 parseerror(parser, "expected condition in parenthesis");
1884 if (parser->tok != '(') {
1885 parseerror(parser, "expected 'if' condition in parenthesis");
1888 /* parse into the expression */
1889 if (!parser_next(parser)) {
1890 parseerror(parser, "expected 'if' condition after opening paren");
1893 /* parse the condition */
1894 cond = parse_expression_leave(parser, false);
1898 if (parser->tok != ')') {
1899 parseerror(parser, "expected closing paren after 'if' condition");
1903 /* parse into the 'then' branch */
1904 if (!parser_next(parser)) {
1905 parseerror(parser, "expected statement for on-true branch of 'if'");
1909 if (!parse_statement_or_block(parser, &ontrue)) {
1913 /* check for an else */
1914 if (!strcmp(parser_tokval(parser), "else")) {
1915 /* parse into the 'else' branch */
1916 if (!parser_next(parser)) {
1917 parseerror(parser, "expected on-false branch after 'else'");
1922 if (!parse_statement_or_block(parser, &onfalse)) {
1930 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
1932 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
1933 *out = (ast_expression*)ifthen;
1937 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
1940 ast_expression *cond, *ontrue;
1942 lex_ctx ctx = parser_ctx(parser);
1944 (void)block; /* not touching */
1946 /* skip the 'while' and check for opening paren */
1947 if (!parser_next(parser) || parser->tok != '(') {
1948 parseerror(parser, "expected 'while' condition in parenthesis");
1951 /* parse into the expression */
1952 if (!parser_next(parser)) {
1953 parseerror(parser, "expected 'while' condition after opening paren");
1956 /* parse the condition */
1957 cond = parse_expression_leave(parser, false);
1961 if (parser->tok != ')') {
1962 parseerror(parser, "expected closing paren after 'while' condition");
1966 /* parse into the 'then' branch */
1967 if (!parser_next(parser)) {
1968 parseerror(parser, "expected while-loop body");
1972 if (!parse_statement_or_block(parser, &ontrue)) {
1977 aloop = ast_loop_new(ctx, NULL, cond, NULL, NULL, ontrue);
1978 *out = (ast_expression*)aloop;
1982 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
1985 ast_expression *cond, *ontrue;
1987 lex_ctx ctx = parser_ctx(parser);
1989 (void)block; /* not touching */
1991 /* skip the 'do' and get the body */
1992 if (!parser_next(parser)) {
1993 parseerror(parser, "expected loop body");
1996 if (!parse_statement_or_block(parser, &ontrue))
1999 /* expect the "while" */
2000 if (parser->tok != TOKEN_KEYWORD ||
2001 strcmp(parser_tokval(parser), "while"))
2003 parseerror(parser, "expected 'while' and condition");
2008 /* skip the 'while' and check for opening paren */
2009 if (!parser_next(parser) || parser->tok != '(') {
2010 parseerror(parser, "expected 'while' condition in parenthesis");
2014 /* parse into the expression */
2015 if (!parser_next(parser)) {
2016 parseerror(parser, "expected 'while' condition after opening paren");
2020 /* parse the condition */
2021 cond = parse_expression_leave(parser, false);
2025 if (parser->tok != ')') {
2026 parseerror(parser, "expected closing paren after 'while' condition");
2032 if (!parser_next(parser) || parser->tok != ';') {
2033 parseerror(parser, "expected semicolon after condition");
2039 if (!parser_next(parser)) {
2040 parseerror(parser, "parse error");
2046 aloop = ast_loop_new(ctx, NULL, NULL, cond, NULL, ontrue);
2047 *out = (ast_expression*)aloop;
2051 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2054 ast_expression *initexpr, *cond, *increment, *ontrue;
2058 lex_ctx ctx = parser_ctx(parser);
2060 parser_enterblock(parser);
2067 /* skip the 'while' and check for opening paren */
2068 if (!parser_next(parser) || parser->tok != '(') {
2069 parseerror(parser, "expected 'for' expressions in parenthesis");
2072 /* parse into the expression */
2073 if (!parser_next(parser)) {
2074 parseerror(parser, "expected 'for' initializer after opening paren");
2079 if (parser->tok == TOKEN_IDENT)
2080 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2082 if (typevar || parser->tok == TOKEN_TYPENAME) {
2083 if (opts.standard != COMPILER_GMQCC) {
2084 if (parsewarning(parser, WARN_EXTENSIONS,
2085 "current standard does not allow variable declarations in for-loop initializers"))
2088 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false))
2091 else if (parser->tok != ';')
2093 initexpr = parse_expression_leave(parser, false);
2098 /* move on to condition */
2099 if (parser->tok != ';') {
2100 parseerror(parser, "expected semicolon after for-loop initializer");
2103 if (!parser_next(parser)) {
2104 parseerror(parser, "expected for-loop condition");
2108 /* parse the condition */
2109 if (parser->tok != ';') {
2110 cond = parse_expression_leave(parser, false);
2115 /* move on to incrementor */
2116 if (parser->tok != ';') {
2117 parseerror(parser, "expected semicolon after for-loop initializer");
2120 if (!parser_next(parser)) {
2121 parseerror(parser, "expected for-loop condition");
2125 /* parse the incrementor */
2126 if (parser->tok != ')') {
2127 increment = parse_expression_leave(parser, false);
2130 if (!ast_side_effects(increment)) {
2131 if (genwarning(ast_ctx(increment), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2137 if (parser->tok != ')') {
2138 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2141 /* parse into the 'then' branch */
2142 if (!parser_next(parser)) {
2143 parseerror(parser, "expected for-loop body");
2146 if (!parse_statement_or_block(parser, &ontrue))
2149 aloop = ast_loop_new(ctx, initexpr, cond, NULL, increment, ontrue);
2150 *out = (ast_expression*)aloop;
2152 if (!parser_leaveblock(parser))
2156 if (initexpr) ast_delete(initexpr);
2157 if (cond) ast_delete(cond);
2158 if (increment) ast_delete(increment);
2159 (void)!parser_leaveblock(parser);
2163 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2165 ast_expression *exp = NULL;
2166 ast_return *ret = NULL;
2167 ast_value *expected = parser->function->vtype;
2169 lex_ctx ctx = parser_ctx(parser);
2171 (void)block; /* not touching */
2173 if (!parser_next(parser)) {
2174 parseerror(parser, "expected return expression");
2178 if (parser->tok != ';') {
2179 exp = parse_expression(parser, false);
2183 if (exp->expression.vtype != expected->expression.next->expression.vtype) {
2184 parseerror(parser, "return with invalid expression");
2187 ret = ast_return_new(ctx, exp);
2193 if (!parser_next(parser))
2194 parseerror(parser, "parse error");
2195 if (expected->expression.next->expression.vtype != TYPE_VOID) {
2196 if (opts.standard != COMPILER_GMQCC)
2197 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2199 parseerror(parser, "return without value");
2201 ret = ast_return_new(ctx, NULL);
2203 *out = (ast_expression*)ret;
2207 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2209 lex_ctx ctx = parser_ctx(parser);
2211 (void)block; /* not touching */
2213 if (!parser_next(parser) || parser->tok != ';') {
2214 parseerror(parser, "expected semicolon");
2218 if (!parser_next(parser))
2219 parseerror(parser, "parse error");
2221 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue);
2225 /* returns true when it was a variable qualifier, false otherwise!
2226 * on error, cvq is set to CV_WRONG
2228 static bool parse_var_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *noreturn)
2230 bool had_const = false;
2231 bool had_var = false;
2232 bool had_noref = false;
2233 bool had_noreturn = false;
2236 if (!strcmp(parser_tokval(parser), "const"))
2238 else if (!strcmp(parser_tokval(parser), "var"))
2240 else if (with_local && !strcmp(parser_tokval(parser), "local"))
2242 else if (!strcmp(parser_tokval(parser), "noref"))
2244 else if (!strcmp(parser_tokval(parser), "noreturn"))
2245 had_noreturn = true;
2246 else if (!had_const && !had_var && !had_noref && !had_noreturn) {
2251 if (!parser_next(parser))
2261 *noreturn = had_noreturn;
2264 parseerror(parser, "parse error after variable qualifier");
2269 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
2271 ast_expression *operand;
2274 ast_switch *switchnode;
2275 ast_switch_case swcase;
2278 bool noref, noreturn;
2280 lex_ctx ctx = parser_ctx(parser);
2282 (void)block; /* not touching */
2285 /* parse over the opening paren */
2286 if (!parser_next(parser) || parser->tok != '(') {
2287 parseerror(parser, "expected switch operand in parenthesis");
2291 /* parse into the expression */
2292 if (!parser_next(parser)) {
2293 parseerror(parser, "expected switch operand");
2296 /* parse the operand */
2297 operand = parse_expression_leave(parser, false);
2301 switchnode = ast_switch_new(ctx, operand);
2304 if (parser->tok != ')') {
2305 ast_delete(switchnode);
2306 parseerror(parser, "expected closing paren after 'switch' operand");
2310 /* parse over the opening paren */
2311 if (!parser_next(parser) || parser->tok != '{') {
2312 ast_delete(switchnode);
2313 parseerror(parser, "expected list of cases");
2317 if (!parser_next(parser)) {
2318 ast_delete(switchnode);
2319 parseerror(parser, "expected 'case' or 'default'");
2323 /* new block; allow some variables to be declared here */
2324 parser_enterblock(parser);
2327 if (parser->tok == TOKEN_IDENT)
2328 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2329 if (typevar || parser->tok == TOKEN_TYPENAME) {
2330 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false)) {
2331 ast_delete(switchnode);
2336 if (parse_var_qualifiers(parser, true, &cvq, &noref, &noreturn))
2338 if (cvq == CV_WRONG) {
2339 ast_delete(switchnode);
2342 if (!parse_variable(parser, block, false, cvq, NULL, noref, noreturn)) {
2343 ast_delete(switchnode);
2352 while (parser->tok != '}') {
2353 ast_block *caseblock;
2355 if (parser->tok != TOKEN_KEYWORD) {
2356 ast_delete(switchnode);
2357 parseerror(parser, "expected 'case' or 'default'");
2360 if (!strcmp(parser_tokval(parser), "case")) {
2361 if (!parser_next(parser)) {
2362 ast_delete(switchnode);
2363 parseerror(parser, "expected expression for case");
2366 swcase.value = parse_expression_leave(parser, false);
2367 if (!swcase.value) {
2368 ast_delete(switchnode);
2369 parseerror(parser, "expected expression for case");
2372 if (!OPTS_FLAG(RELAXED_SWITCH)) {
2373 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
2374 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
2380 else if (!strcmp(parser_tokval(parser), "default")) {
2381 swcase.value = NULL;
2382 if (!parser_next(parser)) {
2383 ast_delete(switchnode);
2384 parseerror(parser, "expected colon");
2389 /* Now the colon and body */
2390 if (parser->tok != ':') {
2391 if (swcase.value) ast_unref(swcase.value);
2392 ast_delete(switchnode);
2393 parseerror(parser, "expected colon");
2397 if (!parser_next(parser)) {
2398 if (swcase.value) ast_unref(swcase.value);
2399 ast_delete(switchnode);
2400 parseerror(parser, "expected statements or case");
2403 caseblock = ast_block_new(parser_ctx(parser));
2405 if (swcase.value) ast_unref(swcase.value);
2406 ast_delete(switchnode);
2409 swcase.code = (ast_expression*)caseblock;
2410 vec_push(switchnode->cases, swcase);
2412 ast_expression *expr;
2413 if (parser->tok == '}')
2415 if (parser->tok == TOKEN_KEYWORD) {
2416 if (!strcmp(parser_tokval(parser), "case") ||
2417 !strcmp(parser_tokval(parser), "default"))
2422 if (!parse_statement(parser, caseblock, &expr, true)) {
2423 ast_delete(switchnode);
2428 if (!ast_block_add_expr(caseblock, expr)) {
2429 ast_delete(switchnode);
2435 parser_leaveblock(parser);
2438 if (parser->tok != '}') {
2439 ast_delete(switchnode);
2440 parseerror(parser, "expected closing paren of case list");
2443 if (!parser_next(parser)) {
2444 ast_delete(switchnode);
2445 parseerror(parser, "parse error after switch");
2448 *out = (ast_expression*)switchnode;
2452 static bool parse_goto(parser_t *parser, ast_expression **out)
2457 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2458 parseerror(parser, "expected label name after `goto`");
2462 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
2464 for (i = 0; i < vec_size(parser->labels); ++i) {
2465 if (!strcmp(parser->labels[i]->name, parser_tokval(parser))) {
2466 ast_goto_set_label(gt, parser->labels[i]);
2470 if (i == vec_size(parser->labels))
2471 vec_push(parser->gotos, gt);
2473 if (!parser_next(parser) || parser->tok != ';') {
2474 parseerror(parser, "semicolon expected after goto label");
2477 if (!parser_next(parser)) {
2478 parseerror(parser, "parse error after goto");
2482 *out = (ast_expression*)gt;
2486 static bool parse_skipwhite(parser_t *parser)
2489 if (!parser_next(parser))
2491 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
2492 return parser->tok < TOKEN_ERROR;
2495 static bool parse_eol(parser_t *parser)
2497 if (!parse_skipwhite(parser))
2499 return parser->tok == TOKEN_EOL;
2502 static bool parse_pragma_do(parser_t *parser)
2504 if (!parser_next(parser) ||
2505 parser->tok != TOKEN_IDENT ||
2506 strcmp(parser_tokval(parser), "pragma"))
2508 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
2511 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
2512 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
2516 if (!strcmp(parser_tokval(parser), "noref")) {
2517 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
2518 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
2521 parser->noref = !!parser_token(parser)->constval.i;
2522 if (!parse_eol(parser)) {
2523 parseerror(parser, "parse error after `noref` pragma");
2529 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
2536 static bool parse_pragma(parser_t *parser)
2539 parser->lex->flags.preprocessing = true;
2540 parser->lex->flags.mergelines = true;
2541 rv = parse_pragma_do(parser);
2542 if (parser->tok != TOKEN_EOL) {
2543 parseerror(parser, "junk after pragma");
2546 parser->lex->flags.preprocessing = false;
2547 parser->lex->flags.mergelines = false;
2548 if (!parser_next(parser)) {
2549 parseerror(parser, "parse error after pragma");
2555 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
2557 bool noref, noreturn;
2559 ast_value *typevar = NULL;
2563 if (parser->tok == TOKEN_IDENT)
2564 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2566 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
2568 /* local variable */
2570 parseerror(parser, "cannot declare a variable from here");
2573 if (opts.standard == COMPILER_QCC) {
2574 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
2577 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false))
2581 else if (parse_var_qualifiers(parser, !!block, &cvq, &noref, &noreturn))
2583 if (cvq == CV_WRONG)
2585 return parse_variable(parser, block, true, cvq, NULL, noref, noreturn);
2587 else if (parser->tok == TOKEN_KEYWORD)
2589 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
2594 if (!parser_next(parser)) {
2595 parseerror(parser, "parse error after __builtin_debug_printtype");
2599 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
2601 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
2602 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
2603 if (!parser_next(parser)) {
2604 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
2610 if (!parse_statement(parser, block, out, allow_cases))
2613 con_out("__builtin_debug_printtype: got no output node\n");
2616 ast_type_to_string(*out, ty, sizeof(ty));
2617 con_out("__builtin_debug_printtype: `%s`\n", ty);
2622 else if (!strcmp(parser_tokval(parser), "return"))
2624 return parse_return(parser, block, out);
2626 else if (!strcmp(parser_tokval(parser), "if"))
2628 return parse_if(parser, block, out);
2630 else if (!strcmp(parser_tokval(parser), "while"))
2632 return parse_while(parser, block, out);
2634 else if (!strcmp(parser_tokval(parser), "do"))
2636 return parse_dowhile(parser, block, out);
2638 else if (!strcmp(parser_tokval(parser), "for"))
2640 if (opts.standard == COMPILER_QCC) {
2641 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
2644 return parse_for(parser, block, out);
2646 else if (!strcmp(parser_tokval(parser), "break"))
2648 return parse_break_continue(parser, block, out, false);
2650 else if (!strcmp(parser_tokval(parser), "continue"))
2652 return parse_break_continue(parser, block, out, true);
2654 else if (!strcmp(parser_tokval(parser), "switch"))
2656 return parse_switch(parser, block, out);
2658 else if (!strcmp(parser_tokval(parser), "case") ||
2659 !strcmp(parser_tokval(parser), "default"))
2662 parseerror(parser, "unexpected 'case' label");
2667 else if (!strcmp(parser_tokval(parser), "goto"))
2669 return parse_goto(parser, out);
2671 else if (!strcmp(parser_tokval(parser), "typedef"))
2673 if (!parser_next(parser)) {
2674 parseerror(parser, "expected type definition after 'typedef'");
2677 return parse_typedef(parser);
2679 parseerror(parser, "Unexpected keyword");
2682 else if (parser->tok == '{')
2685 inner = parse_block(parser);
2688 *out = (ast_expression*)inner;
2691 else if (parser->tok == ':')
2695 if (!parser_next(parser)) {
2696 parseerror(parser, "expected label name");
2699 if (parser->tok != TOKEN_IDENT) {
2700 parseerror(parser, "label must be an identifier");
2703 label = ast_label_new(parser_ctx(parser), parser_tokval(parser));
2706 vec_push(parser->labels, label);
2707 *out = (ast_expression*)label;
2708 if (!parser_next(parser)) {
2709 parseerror(parser, "parse error after label");
2712 for (i = 0; i < vec_size(parser->gotos); ++i) {
2713 if (!strcmp(parser->gotos[i]->name, label->name)) {
2714 ast_goto_set_label(parser->gotos[i], label);
2715 vec_remove(parser->gotos, i, 1);
2721 else if (parser->tok == ';')
2723 if (!parser_next(parser)) {
2724 parseerror(parser, "parse error after empty statement");
2731 ast_expression *exp = parse_expression(parser, false);
2735 if (!ast_side_effects(exp)) {
2736 if (genwarning(ast_ctx(exp), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2743 static bool parse_block_into(parser_t *parser, ast_block *block)
2747 parser_enterblock(parser);
2749 if (!parser_next(parser)) { /* skip the '{' */
2750 parseerror(parser, "expected function body");
2754 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
2756 ast_expression *expr = NULL;
2757 if (parser->tok == '}')
2760 if (!parse_statement(parser, block, &expr, false)) {
2761 /* parseerror(parser, "parse error"); */
2767 if (!ast_block_add_expr(block, expr)) {
2774 if (parser->tok != '}') {
2777 (void)parser_next(parser);
2781 if (!parser_leaveblock(parser))
2783 return retval && !!block;
2786 static ast_block* parse_block(parser_t *parser)
2789 block = ast_block_new(parser_ctx(parser));
2792 if (!parse_block_into(parser, block)) {
2793 ast_block_delete(block);
2799 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
2801 if (parser->tok == '{') {
2802 *out = (ast_expression*)parse_block(parser);
2805 return parse_statement(parser, NULL, out, false);
2808 static bool create_vector_members(ast_value *var, ast_member **me)
2811 size_t len = strlen(var->name);
2813 for (i = 0; i < 3; ++i) {
2814 char *name = mem_a(len+3);
2815 memcpy(name, var->name, len);
2817 name[len+1] = 'x'+i;
2819 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
2828 do { ast_member_delete(me[--i]); } while(i);
2832 static bool parse_function_body(parser_t *parser, ast_value *var)
2834 ast_block *block = NULL;
2839 ast_expression *framenum = NULL;
2840 ast_expression *nextthink = NULL;
2841 /* None of the following have to be deleted */
2842 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
2843 ast_expression *gbl_time = NULL, *gbl_self = NULL;
2844 bool has_frame_think;
2848 has_frame_think = false;
2849 old = parser->function;
2851 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
2852 parseerror(parser, "gotos/labels leaking");
2856 if (var->expression.flags & AST_FLAG_VARIADIC) {
2857 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
2858 "variadic function with implementation will not be able to access additional parameters"))
2864 if (parser->tok == '[') {
2865 /* got a frame definition: [ framenum, nextthink ]
2866 * this translates to:
2867 * self.frame = framenum;
2868 * self.nextthink = time + 0.1;
2869 * self.think = nextthink;
2873 fld_think = parser_find_field(parser, "think");
2874 fld_nextthink = parser_find_field(parser, "nextthink");
2875 fld_frame = parser_find_field(parser, "frame");
2876 if (!fld_think || !fld_nextthink || !fld_frame) {
2877 parseerror(parser, "cannot use [frame,think] notation without the required fields");
2878 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
2881 gbl_time = parser_find_global(parser, "time");
2882 gbl_self = parser_find_global(parser, "self");
2883 if (!gbl_time || !gbl_self) {
2884 parseerror(parser, "cannot use [frame,think] notation without the required globals");
2885 parseerror(parser, "please declare the following globals: `time`, `self`");
2889 if (!parser_next(parser))
2892 framenum = parse_expression_leave(parser, true);
2894 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
2897 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
2898 ast_unref(framenum);
2899 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
2903 if (parser->tok != ',') {
2904 ast_unref(framenum);
2905 parseerror(parser, "expected comma after frame number in [frame,think] notation");
2906 parseerror(parser, "Got a %i\n", parser->tok);
2910 if (!parser_next(parser)) {
2911 ast_unref(framenum);
2915 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
2917 /* qc allows the use of not-yet-declared functions here
2918 * - this automatically creates a prototype */
2919 ast_value *thinkfunc;
2920 ast_expression *functype = fld_think->expression.next;
2922 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
2923 if (!thinkfunc || !ast_type_adopt(thinkfunc, functype)) {
2924 ast_unref(framenum);
2925 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
2929 if (!parser_next(parser)) {
2930 ast_unref(framenum);
2931 ast_delete(thinkfunc);
2935 vec_push(parser->globals, (ast_expression*)thinkfunc);
2936 util_htset(parser->htglobals, thinkfunc->name, thinkfunc);
2937 nextthink = (ast_expression*)thinkfunc;
2940 nextthink = parse_expression_leave(parser, true);
2942 ast_unref(framenum);
2943 parseerror(parser, "expected a think-function in [frame,think] notation");
2948 if (!ast_istype(nextthink, ast_value)) {
2949 parseerror(parser, "think-function in [frame,think] notation must be a constant");
2953 if (retval && parser->tok != ']') {
2954 parseerror(parser, "expected closing `]` for [frame,think] notation");
2958 if (retval && !parser_next(parser)) {
2962 if (retval && parser->tok != '{') {
2963 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
2968 ast_unref(nextthink);
2969 ast_unref(framenum);
2973 has_frame_think = true;
2976 block = ast_block_new(parser_ctx(parser));
2978 parseerror(parser, "failed to allocate block");
2979 if (has_frame_think) {
2980 ast_unref(nextthink);
2981 ast_unref(framenum);
2986 if (has_frame_think) {
2988 ast_expression *self_frame;
2989 ast_expression *self_nextthink;
2990 ast_expression *self_think;
2991 ast_expression *time_plus_1;
2992 ast_store *store_frame;
2993 ast_store *store_nextthink;
2994 ast_store *store_think;
2996 ctx = parser_ctx(parser);
2997 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
2998 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
2999 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
3001 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
3002 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
3004 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
3005 if (self_frame) ast_delete(self_frame);
3006 if (self_nextthink) ast_delete(self_nextthink);
3007 if (self_think) ast_delete(self_think);
3008 if (time_plus_1) ast_delete(time_plus_1);
3014 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
3015 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
3016 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
3019 ast_delete(self_frame);
3022 if (!store_nextthink) {
3023 ast_delete(self_nextthink);
3027 ast_delete(self_think);
3031 if (store_frame) ast_delete(store_frame);
3032 if (store_nextthink) ast_delete(store_nextthink);
3033 if (store_think) ast_delete(store_think);
3036 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
3037 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
3038 !ast_block_add_expr(block, (ast_expression*)store_think))
3045 parseerror(parser, "failed to generate code for [frame,think]");
3046 ast_unref(nextthink);
3047 ast_unref(framenum);
3053 parser_enterblock(parser);
3055 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
3057 ast_value *param = var->expression.params[parami];
3060 if (param->expression.vtype != TYPE_VECTOR &&
3061 (param->expression.vtype != TYPE_FIELD ||
3062 param->expression.next->expression.vtype != TYPE_VECTOR))
3067 if (!create_vector_members(param, me)) {
3068 ast_block_delete(block);
3072 for (e = 0; e < 3; ++e) {
3073 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
3074 ast_block_collect(block, (ast_expression*)me[e]);
3078 func = ast_function_new(ast_ctx(var), var->name, var);
3080 parseerror(parser, "failed to allocate function for `%s`", var->name);
3081 ast_block_delete(block);
3084 vec_push(parser->functions, func);
3086 parser->function = func;
3087 if (!parse_block_into(parser, block)) {
3088 ast_block_delete(block);
3092 vec_push(func->blocks, block);
3094 parser->function = old;
3095 if (!parser_leaveblock(parser))
3097 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
3098 parseerror(parser, "internal error: local scopes left");
3102 if (parser->tok == ';')
3103 return parser_next(parser);
3104 else if (opts.standard == COMPILER_QCC)
3105 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
3109 vec_pop(parser->functions);
3110 ast_function_delete(func);
3111 var->constval.vfunc = NULL;
3114 (void)!parser_leaveblock(parser);
3115 parser->function = old;
3119 static ast_expression *array_accessor_split(
3124 ast_expression *left,
3125 ast_expression *right
3131 lex_ctx ctx = ast_ctx(array);
3133 if (!left || !right) {
3134 if (left) ast_delete(left);
3135 if (right) ast_delete(right);
3139 cmp = ast_binary_new(ctx, INSTR_LT,
3140 (ast_expression*)index,
3141 (ast_expression*)parser_const_float(parser, middle));
3145 parseerror(parser, "internal error: failed to create comparison for array setter");
3149 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
3151 ast_delete(cmp); /* will delete left and right */
3152 parseerror(parser, "internal error: failed to create conditional jump for array setter");
3156 return (ast_expression*)ifthen;
3159 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
3161 lex_ctx ctx = ast_ctx(array);
3163 if (from+1 == afterend) {
3164 /* set this value */
3167 ast_array_index *subscript;
3169 int assignop = type_store_instr[value->expression.vtype];
3171 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3172 assignop = INSTR_STORE_V;
3174 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3178 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
3180 ast_delete(subscript);
3184 block = ast_block_new(ctx);
3190 if (!ast_block_add_expr(block, (ast_expression*)st)) {
3195 ret = ast_return_new(ctx, NULL);
3201 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
3206 return (ast_expression*)block;
3208 ast_expression *left, *right;
3209 size_t diff = afterend - from;
3210 size_t middle = from + diff/2;
3211 left = array_setter_node(parser, array, index, value, from, middle);
3212 right = array_setter_node(parser, array, index, value, middle, afterend);
3213 return array_accessor_split(parser, array, index, middle, left, right);
3217 static ast_expression *array_field_setter_node(
3226 lex_ctx ctx = ast_ctx(array);
3228 if (from+1 == afterend) {
3229 /* set this value */
3232 ast_entfield *entfield;
3233 ast_array_index *subscript;
3235 int assignop = type_storep_instr[value->expression.vtype];
3237 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3238 assignop = INSTR_STOREP_V;
3240 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3244 entfield = ast_entfield_new_force(ctx,
3245 (ast_expression*)entity,
3246 (ast_expression*)subscript,
3247 (ast_expression*)subscript);
3249 ast_delete(subscript);
3253 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
3255 ast_delete(entfield);
3259 block = ast_block_new(ctx);
3265 if (!ast_block_add_expr(block, (ast_expression*)st)) {
3270 ret = ast_return_new(ctx, NULL);
3276 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
3281 return (ast_expression*)block;
3283 ast_expression *left, *right;
3284 size_t diff = afterend - from;
3285 size_t middle = from + diff/2;
3286 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
3287 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
3288 return array_accessor_split(parser, array, index, middle, left, right);
3292 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
3294 lex_ctx ctx = ast_ctx(array);
3296 if (from+1 == afterend) {
3298 ast_array_index *subscript;
3300 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3304 ret = ast_return_new(ctx, (ast_expression*)subscript);
3306 ast_delete(subscript);
3310 return (ast_expression*)ret;
3312 ast_expression *left, *right;
3313 size_t diff = afterend - from;
3314 size_t middle = from + diff/2;
3315 left = array_getter_node(parser, array, index, from, middle);
3316 right = array_getter_node(parser, array, index, middle, afterend);
3317 return array_accessor_split(parser, array, index, middle, left, right);
3321 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
3323 ast_function *func = NULL;
3324 ast_value *fval = NULL;
3325 ast_block *body = NULL;
3327 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
3329 parseerror(parser, "failed to create accessor function value");
3333 func = ast_function_new(ast_ctx(array), funcname, fval);
3336 parseerror(parser, "failed to create accessor function node");
3340 body = ast_block_new(ast_ctx(array));
3342 parseerror(parser, "failed to create block for array accessor");
3348 vec_push(func->blocks, body);
3351 vec_push(parser->accessors, fval);
3356 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
3358 ast_expression *root = NULL;
3359 ast_value *index = NULL;
3360 ast_value *value = NULL;
3364 if (!ast_istype(array->expression.next, ast_value)) {
3365 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3369 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3371 func = fval->constval.vfunc;
3372 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
3374 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3375 value = ast_value_copy((ast_value*)array->expression.next);
3377 if (!index || !value) {
3378 parseerror(parser, "failed to create locals for array accessor");
3381 (void)!ast_value_set_name(value, "value"); /* not important */
3382 vec_push(fval->expression.params, index);
3383 vec_push(fval->expression.params, value);
3385 root = array_setter_node(parser, array, index, value, 0, array->expression.count);
3387 parseerror(parser, "failed to build accessor search tree");
3391 array->setter = fval;
3392 return ast_block_add_expr(func->blocks[0], root);
3394 if (index) ast_delete(index);
3395 if (value) ast_delete(value);
3396 if (root) ast_delete(root);
3402 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
3404 ast_expression *root = NULL;
3405 ast_value *entity = NULL;
3406 ast_value *index = NULL;
3407 ast_value *value = NULL;
3411 if (!ast_istype(array->expression.next, ast_value)) {
3412 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3416 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3418 func = fval->constval.vfunc;
3419 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
3421 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
3422 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3423 value = ast_value_copy((ast_value*)array->expression.next);
3424 if (!entity || !index || !value) {
3425 parseerror(parser, "failed to create locals for array accessor");
3428 (void)!ast_value_set_name(value, "value"); /* not important */
3429 vec_push(fval->expression.params, entity);
3430 vec_push(fval->expression.params, index);
3431 vec_push(fval->expression.params, value);
3433 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
3435 parseerror(parser, "failed to build accessor search tree");
3439 array->setter = fval;
3440 return ast_block_add_expr(func->blocks[0], root);
3442 if (entity) ast_delete(entity);
3443 if (index) ast_delete(index);
3444 if (value) ast_delete(value);
3445 if (root) ast_delete(root);
3451 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
3453 ast_expression *root = NULL;
3454 ast_value *index = NULL;
3458 /* NOTE: checking array->expression.next rather than elemtype since
3459 * for fields elemtype is a temporary fieldtype.
3461 if (!ast_istype(array->expression.next, ast_value)) {
3462 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3466 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3468 func = fval->constval.vfunc;
3469 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
3471 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3474 parseerror(parser, "failed to create locals for array accessor");
3477 vec_push(fval->expression.params, index);
3479 root = array_getter_node(parser, array, index, 0, array->expression.count);
3481 parseerror(parser, "failed to build accessor search tree");
3485 array->getter = fval;
3486 return ast_block_add_expr(func->blocks[0], root);
3488 if (index) ast_delete(index);
3489 if (root) ast_delete(root);
3495 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
3496 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
3504 bool variadic = false;
3506 ctx = parser_ctx(parser);
3508 /* for the sake of less code we parse-in in this function */
3509 if (!parser_next(parser)) {
3510 parseerror(parser, "expected parameter list");
3516 /* parse variables until we hit a closing paren */
3517 while (parser->tok != ')') {
3519 /* there must be commas between them */
3520 if (parser->tok != ',') {
3521 parseerror(parser, "expected comma or end of parameter list");
3524 if (!parser_next(parser)) {
3525 parseerror(parser, "expected parameter");
3531 if (parser->tok == TOKEN_DOTS) {
3532 /* '...' indicates a varargs function */
3534 if (!parser_next(parser)) {
3535 parseerror(parser, "expected parameter");
3538 if (parser->tok != ')') {
3539 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
3545 /* for anything else just parse a typename */
3546 param = parse_typename(parser, NULL, NULL);
3549 vec_push(params, param);
3550 if (param->expression.vtype >= TYPE_VARIANT) {
3551 char typename[1024];
3552 ast_type_to_string((ast_expression*)param, typename, sizeof(typename));
3553 parseerror(parser, "type not supported as part of a parameter list: %s", typename);
3559 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
3563 if (vec_size(params) > 8 && opts.standard == COMPILER_QCC)
3564 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
3567 if (!parser_next(parser)) {
3568 parseerror(parser, "parse error after typename");
3572 /* now turn 'var' into a function type */
3573 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
3574 fval->expression.next = (ast_expression*)var;
3576 fval->expression.flags |= AST_FLAG_VARIADIC;
3579 var->expression.params = params;
3586 for (i = 0; i < vec_size(params); ++i)
3587 ast_delete(params[i]);
3592 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
3594 ast_expression *cexp;
3595 ast_value *cval, *tmp;
3598 ctx = parser_ctx(parser);
3600 if (!parser_next(parser)) {
3602 parseerror(parser, "expected array-size");
3606 cexp = parse_expression_leave(parser, true);
3608 if (!cexp || !ast_istype(cexp, ast_value)) {
3612 parseerror(parser, "expected array-size as constant positive integer");
3615 cval = (ast_value*)cexp;
3617 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
3618 tmp->expression.next = (ast_expression*)var;
3621 if (cval->expression.vtype == TYPE_INTEGER)
3622 tmp->expression.count = cval->constval.vint;
3623 else if (cval->expression.vtype == TYPE_FLOAT)
3624 tmp->expression.count = cval->constval.vfloat;
3628 parseerror(parser, "array-size must be a positive integer constant");
3633 if (parser->tok != ']') {
3635 parseerror(parser, "expected ']' after array-size");
3638 if (!parser_next(parser)) {
3640 parseerror(parser, "error after parsing array size");
3646 /* Parse a complete typename.
3647 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
3648 * but when parsing variables separated by comma
3649 * 'storebase' should point to where the base-type should be kept.
3650 * The base type makes up every bit of type information which comes *before* the
3653 * The following will be parsed in its entirety:
3655 * The 'basetype' in this case is 'void()'
3656 * and if there's a comma after it, say:
3658 * then the type-information 'void()' can be stored in 'storebase'
3660 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
3662 ast_value *var, *tmp;
3665 const char *name = NULL;
3666 bool isfield = false;
3667 bool wasarray = false;
3668 size_t morefields = 0;
3670 ctx = parser_ctx(parser);
3672 /* types may start with a dot */
3673 if (parser->tok == '.') {
3675 /* if we parsed a dot we need a typename now */
3676 if (!parser_next(parser)) {
3677 parseerror(parser, "expected typename for field definition");
3681 /* Further dots are handled seperately because they won't be part of the
3684 while (parser->tok == '.') {
3686 if (!parser_next(parser)) {
3687 parseerror(parser, "expected typename for field definition");
3692 if (parser->tok == TOKEN_IDENT)
3693 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
3694 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
3695 parseerror(parser, "expected typename");
3699 /* generate the basic type value */
3700 if (cached_typedef) {
3701 var = ast_value_copy(cached_typedef);
3702 ast_value_set_name(var, "<type(from_def)>");
3704 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
3706 for (; morefields; --morefields) {
3707 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
3708 tmp->expression.next = (ast_expression*)var;
3712 /* do not yet turn into a field - remember:
3713 * .void() foo; is a field too
3714 * .void()() foo; is a function
3718 if (!parser_next(parser)) {
3720 parseerror(parser, "parse error after typename");
3724 /* an opening paren now starts the parameter-list of a function
3725 * this is where original-QC has parameter lists.
3726 * We allow a single parameter list here.
3727 * Much like fteqcc we don't allow `float()() x`
3729 if (parser->tok == '(') {
3730 var = parse_parameter_list(parser, var);
3735 /* store the base if requested */
3737 *storebase = ast_value_copy(var);
3739 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3740 tmp->expression.next = (ast_expression*)*storebase;
3745 /* there may be a name now */
3746 if (parser->tok == TOKEN_IDENT) {
3747 name = util_strdup(parser_tokval(parser));
3749 if (!parser_next(parser)) {
3751 parseerror(parser, "error after variable or field declaration");
3756 /* now this may be an array */
3757 if (parser->tok == '[') {
3759 var = parse_arraysize(parser, var);
3764 /* This is the point where we can turn it into a field */
3766 /* turn it into a field if desired */
3767 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3768 tmp->expression.next = (ast_expression*)var;
3772 /* now there may be function parens again */
3773 if (parser->tok == '(' && opts.standard == COMPILER_QCC)
3774 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3775 if (parser->tok == '(' && wasarray)
3776 parseerror(parser, "arrays as part of a return type is not supported");
3777 while (parser->tok == '(') {
3778 var = parse_parameter_list(parser, var);
3787 /* finally name it */
3789 if (!ast_value_set_name(var, name)) {
3791 parseerror(parser, "internal error: failed to set name");
3794 /* free the name, ast_value_set_name duplicates */
3801 static bool parse_typedef(parser_t *parser)
3803 ast_value *typevar, *oldtype;
3804 ast_expression *old;
3806 typevar = parse_typename(parser, NULL, NULL);
3811 if ( (old = parser_find_var(parser, typevar->name)) ) {
3812 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
3813 " -> `%s` has been declared here: %s:%i",
3814 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
3815 ast_delete(typevar);
3819 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
3820 parseerror(parser, "type `%s` has already been declared here: %s:%i",
3821 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
3822 ast_delete(typevar);
3826 vec_push(parser->_typedefs, typevar);
3827 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
3829 if (parser->tok != ';') {
3830 parseerror(parser, "expected semicolon after typedef");
3833 if (!parser_next(parser)) {
3834 parseerror(parser, "parse error after typedef");
3841 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref, bool noreturn)
3845 ast_expression *old;
3849 ast_value *basetype = NULL;
3851 bool isparam = false;
3852 bool isvector = false;
3853 bool cleanvar = true;
3854 bool wasarray = false;
3858 /* get the first complete variable */
3859 var = parse_typename(parser, &basetype, cached_typedef);
3862 ast_delete(basetype);
3870 /* Part 0: finish the type */
3871 if (parser->tok == '(') {
3872 if (opts.standard == COMPILER_QCC)
3873 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3874 var = parse_parameter_list(parser, var);
3880 /* we only allow 1-dimensional arrays */
3881 if (parser->tok == '[') {
3883 var = parse_arraysize(parser, var);
3889 if (parser->tok == '(' && wasarray) {
3890 parseerror(parser, "arrays as part of a return type is not supported");
3891 /* we'll still parse the type completely for now */
3893 /* for functions returning functions */
3894 while (parser->tok == '(') {
3895 if (opts.standard == COMPILER_QCC)
3896 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3897 var = parse_parameter_list(parser, var);
3904 var->cvq = qualifier;
3905 /* in a noref section we simply bump the usecount */
3906 if (noref || parser->noref)
3909 var->expression.flags |= AST_FLAG_NORETURN;
3912 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
3913 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
3914 * is then filled with the previous definition and the parameter-names replaced.
3917 /* Deal with end_sys_ vars */
3919 if (!strcmp(var->name, "end_sys_globals")) {
3921 parser->crc_globals = vec_size(parser->globals);
3924 else if (!strcmp(var->name, "end_sys_fields")) {
3926 parser->crc_fields = vec_size(parser->fields);
3929 if (was_end && var->expression.vtype == TYPE_FIELD) {
3930 if (parsewarning(parser, WARN_END_SYS_FIELDS,
3931 "global '%s' hint should not be a field",
3932 parser_tokval(parser)))
3939 if (!nofields && var->expression.vtype == TYPE_FIELD)
3941 /* deal with field declarations */
3942 old = parser_find_field(parser, var->name);
3944 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
3945 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
3954 parseerror(parser, "field `%s` already declared here: %s:%i",
3955 var->name, ast_ctx(old).file, ast_ctx(old).line);
3960 if (opts.standard == COMPILER_QCC &&
3961 (old = parser_find_global(parser, var->name)))
3963 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
3964 parseerror(parser, "field `%s` already declared here: %s:%i",
3965 var->name, ast_ctx(old).file, ast_ctx(old).line);
3972 /* deal with other globals */
3973 old = parser_find_global(parser, var->name);
3974 if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
3976 /* This is a function which had a prototype */
3977 if (!ast_istype(old, ast_value)) {
3978 parseerror(parser, "internal error: prototype is not an ast_value");
3982 proto = (ast_value*)old;
3983 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
3984 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
3986 ast_ctx(proto).file, ast_ctx(proto).line);
3990 /* we need the new parameter-names */
3991 for (i = 0; i < vec_size(proto->expression.params); ++i)
3992 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
4000 if (opts.standard == COMPILER_GMQCC) {
4001 parseerror(parser, "global `%s` already declared here: %s:%i",
4002 var->name, ast_ctx(old).file, ast_ctx(old).line);
4006 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
4007 "global `%s` already declared here: %s:%i",
4008 var->name, ast_ctx(old).file, ast_ctx(old).line))
4013 proto = (ast_value*)old;
4014 if (!ast_istype(old, ast_value)) {
4015 parseerror(parser, "internal error: not an ast_value");
4024 if (opts.standard == COMPILER_QCC &&
4025 (old = parser_find_field(parser, var->name)))
4027 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
4028 parseerror(parser, "global `%s` already declared here: %s:%i",
4029 var->name, ast_ctx(old).file, ast_ctx(old).line);
4036 else /* it's not a global */
4038 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
4039 if (old && !isparam) {
4040 parseerror(parser, "local `%s` already declared here: %s:%i",
4041 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
4045 old = parser_find_local(parser, var->name, 0, &isparam);
4046 if (old && isparam) {
4047 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
4048 "local `%s` is shadowing a parameter", var->name))
4050 parseerror(parser, "local `%s` already declared here: %s:%i",
4051 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
4055 if (opts.standard != COMPILER_GMQCC) {
4064 * Create the global/local, and deal with vector types.
4067 if (var->expression.vtype == TYPE_VECTOR)
4069 else if (var->expression.vtype == TYPE_FIELD &&
4070 var->expression.next->expression.vtype == TYPE_VECTOR)
4074 if (!create_vector_members(var, me)) {
4081 /* deal with global variables, fields, functions */
4082 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
4083 var->isfield = true;
4084 vec_push(parser->fields, (ast_expression*)var);
4085 util_htset(parser->htfields, var->name, var);
4087 for (i = 0; i < 3; ++i) {
4088 vec_push(parser->fields, (ast_expression*)me[i]);
4089 util_htset(parser->htfields, me[i]->name, me[i]);
4094 vec_push(parser->globals, (ast_expression*)var);
4095 util_htset(parser->htglobals, var->name, var);
4097 for (i = 0; i < 3; ++i) {
4098 vec_push(parser->globals, (ast_expression*)me[i]);
4099 util_htset(parser->htglobals, me[i]->name, me[i]);
4104 vec_push(localblock->locals, var);
4105 parser_addlocal(parser, var->name, (ast_expression*)var);
4107 for (i = 0; i < 3; ++i) {
4108 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
4109 ast_block_collect(localblock, (ast_expression*)me[i]);
4115 me[0] = me[1] = me[2] = NULL;
4120 if (var->expression.vtype == TYPE_ARRAY) {
4122 snprintf(name, sizeof(name), "%s##SET", var->name);
4123 if (!parser_create_array_setter(parser, var, name))
4125 snprintf(name, sizeof(name), "%s##GET", var->name);
4126 if (!parser_create_array_getter(parser, var, var->expression.next, name))
4129 else if (!localblock && !nofields &&
4130 var->expression.vtype == TYPE_FIELD &&
4131 var->expression.next->expression.vtype == TYPE_ARRAY)
4134 ast_expression *telem;
4136 ast_value *array = (ast_value*)var->expression.next;
4138 if (!ast_istype(var->expression.next, ast_value)) {
4139 parseerror(parser, "internal error: field element type must be an ast_value");
4143 snprintf(name, sizeof(name), "%s##SETF", var->name);
4144 if (!parser_create_array_field_setter(parser, array, name))
4147 telem = ast_type_copy(ast_ctx(var), array->expression.next);
4148 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
4149 tfield->expression.next = telem;
4150 snprintf(name, sizeof(name), "%s##GETFP", var->name);
4151 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
4159 if (parser->tok == ';') {
4160 ast_delete(basetype);
4161 if (!parser_next(parser)) {
4162 parseerror(parser, "error after variable declaration");
4168 if (parser->tok == ',')
4172 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
4175 parseerror(parser, "missing comma or semicolon while parsing variables");
4179 if (localblock && opts.standard == COMPILER_QCC) {
4180 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
4181 "initializing expression turns variable `%s` into a constant in this standard",
4188 if (parser->tok != '{') {
4189 if (parser->tok != '=') {
4190 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
4194 if (!parser_next(parser)) {
4195 parseerror(parser, "error parsing initializer");
4199 else if (opts.standard == COMPILER_QCC) {
4200 parseerror(parser, "expected '=' before function body in this standard");
4203 if (parser->tok == '#') {
4204 ast_function *func = NULL;
4207 parseerror(parser, "cannot declare builtins within functions");
4210 if (var->expression.vtype != TYPE_FUNCTION) {
4211 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
4214 if (!parser_next(parser)) {
4215 parseerror(parser, "expected builtin number");
4218 if (parser->tok != TOKEN_INTCONST) {
4219 parseerror(parser, "builtin number must be an integer constant");
4222 if (parser_token(parser)->constval.i < 0) {
4223 parseerror(parser, "builtin number must be an integer greater than zero");
4227 if (var->hasvalue) {
4228 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
4229 "builtin `%s` has already been defined\n"
4230 " -> previous declaration here: %s:%i",
4231 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
4235 func = ast_function_new(ast_ctx(var), var->name, var);
4237 parseerror(parser, "failed to allocate function for `%s`", var->name);
4240 vec_push(parser->functions, func);
4242 func->builtin = -parser_token(parser)->constval.i-1;
4245 if (!parser_next(parser)) {
4246 parseerror(parser, "expected comma or semicolon");
4248 ast_function_delete(func);
4249 var->constval.vfunc = NULL;
4253 else if (parser->tok == '{' || parser->tok == '[')
4257 parseerror(parser, "cannot declare functions within functions");
4262 ast_ctx(proto) = parser_ctx(parser);
4264 if (!parse_function_body(parser, var))
4266 ast_delete(basetype);
4267 for (i = 0; i < vec_size(parser->gotos); ++i)
4268 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
4269 vec_free(parser->gotos);
4270 vec_free(parser->labels);
4273 ast_expression *cexp;
4276 cexp = parse_expression_leave(parser, true);
4281 cval = (ast_value*)cexp;
4282 if (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
4283 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
4286 if (opts.standard != COMPILER_GMQCC &&
4287 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
4288 qualifier != CV_VAR)
4290 var->cvq = CV_CONST;
4292 var->hasvalue = true;
4293 if (cval->expression.vtype == TYPE_STRING)
4294 var->constval.vstring = parser_strdup(cval->constval.vstring);
4295 else if (cval->expression.vtype == TYPE_FIELD)
4296 var->constval.vfield = cval;
4298 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
4303 shunt sy = { NULL, NULL };
4306 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
4307 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
4308 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
4309 if (!parser_sy_apply_operator(parser, &sy))
4312 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
4313 parseerror(parser, "internal error: leaked operands");
4314 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
4324 if (parser->tok == ',') {
4325 if (!parser_next(parser)) {
4326 parseerror(parser, "expected another variable");
4330 if (parser->tok != TOKEN_IDENT) {
4331 parseerror(parser, "expected another variable");
4334 var = ast_value_copy(basetype);
4336 ast_value_set_name(var, parser_tokval(parser));
4337 if (!parser_next(parser)) {
4338 parseerror(parser, "error parsing variable declaration");
4344 if (parser->tok != ';') {
4345 parseerror(parser, "missing semicolon after variables");
4349 if (!parser_next(parser)) {
4350 parseerror(parser, "parse error after variable declaration");
4354 ast_delete(basetype);
4358 if (cleanvar && var)
4360 ast_delete(basetype);
4364 ast_delete(basetype);
4365 if (cleanvar && var)
4367 if (me[0]) ast_member_delete(me[0]);
4368 if (me[1]) ast_member_delete(me[1]);
4369 if (me[2]) ast_member_delete(me[2]);
4373 static bool parser_global_statement(parser_t *parser)
4377 bool noreturn = false;
4378 ast_value *istype = NULL;
4380 if (parser->tok == TOKEN_IDENT)
4381 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
4383 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
4385 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false);
4387 else if (parse_var_qualifiers(parser, false, &cvq, &noref, &noreturn))
4389 if (cvq == CV_WRONG)
4391 return parse_variable(parser, NULL, true, cvq, NULL, noref, noreturn);
4393 else if (parser->tok == TOKEN_KEYWORD)
4395 if (!strcmp(parser_tokval(parser), "typedef")) {
4396 if (!parser_next(parser)) {
4397 parseerror(parser, "expected type definition after 'typedef'");
4400 return parse_typedef(parser);
4402 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
4405 else if (parser->tok == '#')
4407 return parse_pragma(parser);
4409 else if (parser->tok == '$')
4411 if (!parser_next(parser)) {
4412 parseerror(parser, "parse error");
4418 parseerror(parser, "unexpected token: %s", parser->lex->tok.value);
4424 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
4426 return util_crc16(old, str, strlen(str));
4429 static void progdefs_crc_file(const char *str)
4431 /* write to progdefs.h here */
4435 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
4437 old = progdefs_crc_sum(old, str);
4438 progdefs_crc_file(str);
4442 static void generate_checksum(parser_t *parser)
4444 uint16_t crc = 0xFFFF;
4448 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
4449 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
4451 progdefs_crc_file("\tint\tpad;\n");
4452 progdefs_crc_file("\tint\tofs_return[3];\n");
4453 progdefs_crc_file("\tint\tofs_parm0[3];\n");
4454 progdefs_crc_file("\tint\tofs_parm1[3];\n");
4455 progdefs_crc_file("\tint\tofs_parm2[3];\n");
4456 progdefs_crc_file("\tint\tofs_parm3[3];\n");
4457 progdefs_crc_file("\tint\tofs_parm4[3];\n");
4458 progdefs_crc_file("\tint\tofs_parm5[3];\n");
4459 progdefs_crc_file("\tint\tofs_parm6[3];\n");
4460 progdefs_crc_file("\tint\tofs_parm7[3];\n");
4462 for (i = 0; i < parser->crc_globals; ++i) {
4463 if (!ast_istype(parser->globals[i], ast_value))
4465 value = (ast_value*)(parser->globals[i]);
4466 switch (value->expression.vtype) {
4467 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
4468 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
4469 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
4470 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
4472 crc = progdefs_crc_both(crc, "\tint\t");
4475 crc = progdefs_crc_both(crc, value->name);
4476 crc = progdefs_crc_both(crc, ";\n");
4478 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
4479 for (i = 0; i < parser->crc_fields; ++i) {
4480 if (!ast_istype(parser->fields[i], ast_value))
4482 value = (ast_value*)(parser->fields[i]);
4483 switch (value->expression.next->expression.vtype) {
4484 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
4485 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
4486 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
4487 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
4489 crc = progdefs_crc_both(crc, "\tint\t");
4492 crc = progdefs_crc_both(crc, value->name);
4493 crc = progdefs_crc_both(crc, ";\n");
4495 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
4500 static parser_t *parser;
4506 parser = (parser_t*)mem_a(sizeof(parser_t));
4510 memset(parser, 0, sizeof(*parser));
4512 for (i = 0; i < operator_count; ++i) {
4513 if (operators[i].id == opid1('=')) {
4514 parser->assign_op = operators+i;
4518 if (!parser->assign_op) {
4519 printf("internal error: initializing parser: failed to find assign operator\n");
4524 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
4525 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
4526 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
4527 vec_push(parser->_blocktypedefs, 0);
4531 bool parser_compile()
4533 /* initial lexer/parser state */
4534 parser->lex->flags.noops = true;
4536 if (parser_next(parser))
4538 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
4540 if (!parser_global_statement(parser)) {
4541 if (parser->tok == TOKEN_EOF)
4542 parseerror(parser, "unexpected eof");
4543 else if (!parser->errors)
4544 parseerror(parser, "there have been errors, bailing out");
4545 lex_close(parser->lex);
4551 parseerror(parser, "parse error");
4552 lex_close(parser->lex);
4557 lex_close(parser->lex);
4560 return !parser->errors;
4563 bool parser_compile_file(const char *filename)
4565 parser->lex = lex_open(filename);
4567 con_err("failed to open file \"%s\"\n", filename);
4570 return parser_compile();
4573 bool parser_compile_string_len(const char *name, const char *str, size_t len)
4575 parser->lex = lex_open_string(str, len, name);
4577 con_err("failed to create lexer for string \"%s\"\n", name);
4580 return parser_compile();
4583 bool parser_compile_string(const char *name, const char *str)
4585 parser->lex = lex_open_string(str, strlen(str), name);
4587 con_err("failed to create lexer for string \"%s\"\n", name);
4590 return parser_compile();
4593 void parser_cleanup()
4596 for (i = 0; i < vec_size(parser->accessors); ++i) {
4597 ast_delete(parser->accessors[i]->constval.vfunc);
4598 parser->accessors[i]->constval.vfunc = NULL;
4599 ast_delete(parser->accessors[i]);
4601 for (i = 0; i < vec_size(parser->functions); ++i) {
4602 ast_delete(parser->functions[i]);
4604 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
4605 ast_delete(parser->imm_vector[i]);
4607 for (i = 0; i < vec_size(parser->imm_string); ++i) {
4608 ast_delete(parser->imm_string[i]);
4610 for (i = 0; i < vec_size(parser->imm_float); ++i) {
4611 ast_delete(parser->imm_float[i]);
4613 for (i = 0; i < vec_size(parser->fields); ++i) {
4614 ast_delete(parser->fields[i]);
4616 for (i = 0; i < vec_size(parser->globals); ++i) {
4617 ast_delete(parser->globals[i]);
4619 vec_free(parser->accessors);
4620 vec_free(parser->functions);
4621 vec_free(parser->imm_vector);
4622 vec_free(parser->imm_string);
4623 vec_free(parser->imm_float);
4624 vec_free(parser->globals);
4625 vec_free(parser->fields);
4627 for (i = 0; i < vec_size(parser->variables); ++i)
4628 util_htdel(parser->variables[i]);
4629 vec_free(parser->variables);
4630 vec_free(parser->_blocklocals);
4631 vec_free(parser->_locals);
4633 for (i = 0; i < vec_size(parser->_typedefs); ++i)
4634 ast_delete(parser->_typedefs[i]);
4635 vec_free(parser->_typedefs);
4636 for (i = 0; i < vec_size(parser->typedefs); ++i)
4637 util_htdel(parser->typedefs[i]);
4638 vec_free(parser->typedefs);
4639 vec_free(parser->_blocktypedefs);
4641 vec_free(parser->_block_ctx);
4643 vec_free(parser->labels);
4644 vec_free(parser->gotos);
4649 bool parser_finish(const char *output)
4655 if (!parser->errors)
4657 ir = ir_builder_new("gmqcc_out");
4659 con_out("failed to allocate builder\n");
4663 for (i = 0; i < vec_size(parser->fields); ++i) {
4666 if (!ast_istype(parser->fields[i], ast_value))
4668 field = (ast_value*)parser->fields[i];
4669 hasvalue = field->hasvalue;
4670 field->hasvalue = false;
4671 if (!ast_global_codegen((ast_value*)field, ir, true)) {
4672 con_out("failed to generate field %s\n", field->name);
4673 ir_builder_delete(ir);
4678 ast_expression *subtype;
4679 field->hasvalue = true;
4680 subtype = field->expression.next;
4681 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
4682 if (subtype->expression.vtype == TYPE_FIELD)
4683 ifld->fieldtype = subtype->expression.next->expression.vtype;
4684 else if (subtype->expression.vtype == TYPE_FUNCTION)
4685 ifld->outtype = subtype->expression.next->expression.vtype;
4686 (void)!ir_value_set_field(field->ir_v, ifld);
4689 for (i = 0; i < vec_size(parser->globals); ++i) {
4691 if (!ast_istype(parser->globals[i], ast_value))
4693 asvalue = (ast_value*)(parser->globals[i]);
4694 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
4695 retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
4696 "unused global: `%s`", asvalue->name);
4698 if (!ast_global_codegen(asvalue, ir, false)) {
4699 con_out("failed to generate global %s\n", asvalue->name);
4700 ir_builder_delete(ir);
4704 for (i = 0; i < vec_size(parser->imm_float); ++i) {
4705 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
4706 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
4707 ir_builder_delete(ir);
4711 for (i = 0; i < vec_size(parser->imm_string); ++i) {
4712 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
4713 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
4714 ir_builder_delete(ir);
4718 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
4719 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
4720 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
4721 ir_builder_delete(ir);
4725 for (i = 0; i < vec_size(parser->globals); ++i) {
4727 if (!ast_istype(parser->globals[i], ast_value))
4729 asvalue = (ast_value*)(parser->globals[i]);
4730 if (!ast_generate_accessors(asvalue, ir)) {
4731 ir_builder_delete(ir);
4735 for (i = 0; i < vec_size(parser->fields); ++i) {
4737 asvalue = (ast_value*)(parser->fields[i]->expression.next);
4739 if (!ast_istype((ast_expression*)asvalue, ast_value))
4741 if (asvalue->expression.vtype != TYPE_ARRAY)
4743 if (!ast_generate_accessors(asvalue, ir)) {
4744 ir_builder_delete(ir);
4748 for (i = 0; i < vec_size(parser->functions); ++i) {
4749 if (!ast_function_codegen(parser->functions[i], ir)) {
4750 con_out("failed to generate function %s\n", parser->functions[i]->name);
4751 ir_builder_delete(ir);
4756 ir_builder_dump(ir, con_out);
4757 for (i = 0; i < vec_size(parser->functions); ++i) {
4758 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
4759 con_out("failed to finalize function %s\n", parser->functions[i]->name);
4760 ir_builder_delete(ir);
4767 ir_builder_dump(ir, con_out);
4769 generate_checksum(parser);
4771 if (!ir_builder_generate(ir, output)) {
4772 con_out("*** failed to generate output file\n");
4773 ir_builder_delete(ir);
4778 ir_builder_delete(ir);
4782 con_out("*** there were compile errors\n");