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12 * The above copyright notice and this permission notice shall be included in all
13 * copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
29 #define PARSER_HT_FIELDS 0
30 #define PARSER_HT_GLOBALS 1
31 /* beginning of locals */
32 #define PARSER_HT_LOCALS 2
34 #define PARSER_HT_SIZE 1024
35 #define TYPEDEF_HT_SIZE 16
41 ast_expression **globals;
42 ast_expression **fields;
43 ast_function **functions;
44 ast_value **imm_float;
45 ast_value **imm_string;
46 ast_value **imm_vector;
49 /* must be deleted first, they reference immediates and values */
50 ast_value **accessors;
52 ast_value *imm_float_zero;
53 ast_value *imm_float_one;
54 ast_value *imm_vector_zero;
59 ast_function *function;
61 /* All the labels the function defined...
62 * Should they be in ast_function instead?
67 /* A list of hashtables for each scope */
73 /* not to be used directly, we use the hash table */
74 ast_expression **_locals;
76 ast_value **_typedefs;
77 size_t *_blocktypedefs;
82 /* we store the '=' operator info */
83 const oper_info *assign_op;
85 /* TYPE_FIELD -> parser_find_fields is used instead of find_var
86 * TODO: TYPE_VECTOR -> x, y and z are accepted in the gmqcc standard
87 * anything else: type error
91 /* Keep track of our ternary vs parenthesis nesting state.
92 * If we reach a 'comma' operator in a ternary without a paren,
93 * we shall trigger -Wternary-precedence.
95 enum { POT_PAREN, POT_TERNARY1, POT_TERNARY2 } *pot;
101 static const ast_expression *intrinsic_debug_typestring = (ast_expression*)0x10;
103 static void parser_enterblock(parser_t *parser);
104 static bool parser_leaveblock(parser_t *parser);
105 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e);
106 static bool parse_typedef(parser_t *parser);
107 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref);
108 static ast_block* parse_block(parser_t *parser);
109 static bool parse_block_into(parser_t *parser, ast_block *block);
110 static bool parse_statement_or_block(parser_t *parser, ast_expression **out);
111 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases);
112 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma);
113 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma);
115 static void parseerror(parser_t *parser, const char *fmt, ...)
122 con_vprintmsg(LVL_ERROR, parser->lex->tok.ctx.file, parser->lex->tok.ctx.line, "parse error", fmt, ap);
126 /* returns true if it counts as an error */
127 static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
132 r = vcompile_warning(parser->lex->tok.ctx, warntype, fmt, ap);
137 static bool GMQCC_WARN genwarning(lex_ctx ctx, int warntype, const char *fmt, ...)
142 r = vcompile_warning(ctx, warntype, fmt, ap);
147 /**********************************************************************
148 * some maths used for constant folding
151 vector vec3_add(vector a, vector b)
160 vector vec3_sub(vector a, vector b)
169 qcfloat vec3_mulvv(vector a, vector b)
171 return (a.x * b.x + a.y * b.y + a.z * b.z);
174 vector vec3_mulvf(vector a, float b)
183 /**********************************************************************
187 bool parser_next(parser_t *parser)
189 /* lex_do kills the previous token */
190 parser->tok = lex_do(parser->lex);
191 if (parser->tok == TOKEN_EOF)
193 if (parser->tok >= TOKEN_ERROR) {
194 parseerror(parser, "lex error");
200 #define parser_tokval(p) ((p)->lex->tok.value)
201 #define parser_token(p) (&((p)->lex->tok))
202 #define parser_ctx(p) ((p)->lex->tok.ctx)
204 static ast_value* parser_const_float(parser_t *parser, double d)
208 for (i = 0; i < vec_size(parser->imm_float); ++i) {
209 const double compare = parser->imm_float[i]->constval.vfloat;
210 if (memcmp((const void*)&compare, (const void *)&d, sizeof(double)) == 0)
211 return parser->imm_float[i];
213 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_FLOAT);
215 out->hasvalue = true;
216 out->constval.vfloat = d;
217 vec_push(parser->imm_float, out);
221 static ast_value* parser_const_float_0(parser_t *parser)
223 if (!parser->imm_float_zero)
224 parser->imm_float_zero = parser_const_float(parser, 0);
225 return parser->imm_float_zero;
228 static ast_value* parser_const_float_1(parser_t *parser)
230 if (!parser->imm_float_one)
231 parser->imm_float_one = parser_const_float(parser, 1);
232 return parser->imm_float_one;
235 static char *parser_strdup(const char *str)
238 /* actually dup empty strings */
239 char *out = mem_a(1);
243 return util_strdup(str);
246 static ast_value* parser_const_string(parser_t *parser, const char *str, bool dotranslate)
250 for (i = 0; i < vec_size(parser->imm_string); ++i) {
251 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
252 return parser->imm_string[i];
256 snprintf(name, sizeof(name), "dotranslate_%lu", (unsigned long)(parser->translated++));
257 out = ast_value_new(parser_ctx(parser), name, TYPE_STRING);
259 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
261 out->hasvalue = true;
262 out->constval.vstring = parser_strdup(str);
263 vec_push(parser->imm_string, out);
267 static ast_value* parser_const_vector(parser_t *parser, vector v)
271 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
272 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
273 return parser->imm_vector[i];
275 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
277 out->hasvalue = true;
278 out->constval.vvec = v;
279 vec_push(parser->imm_vector, out);
283 static ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
289 return parser_const_vector(parser, v);
292 static ast_value* parser_const_vector_0(parser_t *parser)
294 if (!parser->imm_vector_zero)
295 parser->imm_vector_zero = parser_const_vector_f(parser, 0, 0, 0);
296 return parser->imm_vector_zero;
299 static ast_expression* parser_find_field(parser_t *parser, const char *name)
301 return util_htget(parser->htfields, name);
304 static ast_expression* parser_find_global(parser_t *parser, const char *name)
306 return util_htget(parser->htglobals, name);
309 static ast_expression* parser_find_param(parser_t *parser, const char *name)
313 if (!parser->function)
315 fun = parser->function->vtype;
316 for (i = 0; i < vec_size(fun->expression.params); ++i) {
317 if (!strcmp(fun->expression.params[i]->name, name))
318 return (ast_expression*)(fun->expression.params[i]);
323 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
328 hash = util_hthash(parser->htglobals, name);
331 for (i = vec_size(parser->variables); i > upto;) {
333 if ( (e = util_htgeth(parser->variables[i], name, hash)) )
337 return parser_find_param(parser, name);
340 static ast_expression* parser_find_var(parser_t *parser, const char *name)
344 v = parser_find_local(parser, name, 0, &dummy);
345 if (!v) v = parser_find_global(parser, name);
349 static ast_value* parser_find_typedef(parser_t *parser, const char *name, size_t upto)
353 hash = util_hthash(parser->typedefs[0], name);
355 for (i = vec_size(parser->typedefs); i > upto;) {
357 if ( (e = (ast_value*)util_htgeth(parser->typedefs[i], name, hash)) )
365 size_t etype; /* 0 = expression, others are operators */
369 ast_block *block; /* for commas and function calls */
378 #define SY_PAREN_EXPR '('
379 #define SY_PAREN_FUNC 'f'
380 #define SY_PAREN_INDEX '['
381 #define SY_PAREN_TERNARY '?'
383 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
394 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
398 e.out = (ast_expression*)v;
405 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
407 e.etype = 1 + (op - operators);
416 static sy_elem syparen(lex_ctx ctx, int p, size_t off) {
428 # define DEBUGSHUNTDO(x) x
430 # define DEBUGSHUNTDO(x)
433 /* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
434 * so we need to rotate it to become ent.(foo[n]).
436 static bool rotate_entfield_array_index_nodes(ast_expression **out)
438 ast_array_index *index;
439 ast_entfield *entfield;
443 ast_expression *entity;
445 lex_ctx ctx = ast_ctx(*out);
447 if (!ast_istype(*out, ast_array_index))
449 index = (ast_array_index*)*out;
451 if (!ast_istype(index->array, ast_entfield))
453 entfield = (ast_entfield*)index->array;
455 if (!ast_istype(entfield->field, ast_value))
457 field = (ast_value*)entfield->field;
460 entity = entfield->entity;
464 index = ast_array_index_new(ctx, (ast_expression*)field, sub);
465 entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
466 *out = (ast_expression*)entfield;
471 static bool parser_sy_apply_operator(parser_t *parser, shunt *sy)
475 ast_expression *out = NULL;
476 ast_expression *exprs[3];
477 ast_block *blocks[3];
478 ast_value *asvalue[3];
479 ast_binstore *asbinstore;
480 size_t i, assignop, addop, subop;
481 qcint generated_op = 0;
486 if (!vec_size(sy->ops)) {
487 parseerror(parser, "internal error: missing operator");
491 if (vec_last(sy->ops).paren) {
492 parseerror(parser, "unmatched parenthesis");
496 op = &operators[vec_last(sy->ops).etype - 1];
497 ctx = vec_last(sy->ops).ctx;
499 DEBUGSHUNTDO(con_out("apply %s\n", op->op));
501 if (vec_size(sy->out) < op->operands) {
502 parseerror(parser, "internal error: not enough operands: %i (operator %s (%i))", vec_size(sy->out),
503 op->op, (int)op->id);
507 vec_shrinkby(sy->ops, 1);
509 /* op(:?) has no input and no output */
513 vec_shrinkby(sy->out, op->operands);
514 for (i = 0; i < op->operands; ++i) {
515 exprs[i] = sy->out[vec_size(sy->out)+i].out;
516 blocks[i] = sy->out[vec_size(sy->out)+i].block;
517 asvalue[i] = (ast_value*)exprs[i];
520 if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
521 parseerror(parser, "internal error: operator cannot be applied on empty blocks");
525 #define NotSameType(T) \
526 (exprs[0]->expression.vtype != exprs[1]->expression.vtype || \
527 exprs[0]->expression.vtype != T)
528 #define CanConstFold1(A) \
529 (ast_istype((A), ast_value) && ((ast_value*)(A))->hasvalue && (((ast_value*)(A))->cvq == CV_CONST))
530 #define CanConstFold(A, B) \
531 (CanConstFold1(A) && CanConstFold1(B))
532 #define ConstV(i) (asvalue[(i)]->constval.vvec)
533 #define ConstF(i) (asvalue[(i)]->constval.vfloat)
534 #define ConstS(i) (asvalue[(i)]->constval.vstring)
538 parseerror(parser, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
542 if (exprs[0]->expression.vtype == TYPE_ENTITY) {
543 if (exprs[1]->expression.vtype != TYPE_FIELD) {
544 parseerror(parser, "type error: right hand of member-operand should be an entity-field");
547 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
549 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
550 parseerror(parser, "internal error: vector access is not supposed to be handled at this point");
554 parseerror(parser, "type error: member-of operator on something that is not an entity or vector");
560 if (exprs[0]->expression.vtype != TYPE_ARRAY &&
561 !(exprs[0]->expression.vtype == TYPE_FIELD &&
562 exprs[0]->expression.next->expression.vtype == TYPE_ARRAY))
564 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
565 parseerror(parser, "cannot index value of type %s", ty1);
568 if (exprs[1]->expression.vtype != TYPE_FLOAT) {
569 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
570 parseerror(parser, "index must be of type float, not %s", ty1);
573 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
574 if (rotate_entfield_array_index_nodes(&out))
577 /* This is not broken in fteqcc anymore */
578 if (opts.standard != COMPILER_GMQCC) {
579 /* this error doesn't need to make us bail out */
580 (void)!parsewarning(parser, WARN_EXTENSIONS,
581 "accessing array-field members of an entity without parenthesis\n"
582 " -> this is an extension from -std=gmqcc");
590 if (!ast_block_add_expr(blocks[0], exprs[1]))
593 blocks[0] = ast_block_new(ctx);
594 if (!ast_block_add_expr(blocks[0], exprs[0]) ||
595 !ast_block_add_expr(blocks[0], exprs[1]))
600 if (!ast_block_set_type(blocks[0], exprs[1]))
603 vec_push(sy->out, syblock(ctx, blocks[0]));
610 switch (exprs[0]->expression.vtype) {
612 if (CanConstFold1(exprs[0]))
613 out = (ast_expression*)parser_const_float(parser, -ConstF(0));
615 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
616 (ast_expression*)parser_const_float_0(parser),
620 if (CanConstFold1(exprs[0]))
621 out = (ast_expression*)parser_const_vector_f(parser,
622 -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
624 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
625 (ast_expression*)parser_const_vector_0(parser),
629 parseerror(parser, "invalid types used in expression: cannot negate type %s",
630 type_name[exprs[0]->expression.vtype]);
636 switch (exprs[0]->expression.vtype) {
638 if (CanConstFold1(exprs[0]))
639 out = (ast_expression*)parser_const_float(parser, !ConstF(0));
641 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
644 if (CanConstFold1(exprs[0]))
645 out = (ast_expression*)parser_const_float(parser,
646 (!ConstV(0).x && !ConstV(0).y && !ConstV(0).z));
648 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
651 if (CanConstFold1(exprs[0]))
652 out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
654 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
656 /* we don't constant-fold NOT for these types */
658 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
661 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
664 parseerror(parser, "invalid types used in expression: cannot logically negate type %s",
665 type_name[exprs[0]->expression.vtype]);
671 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
672 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
674 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
675 type_name[exprs[0]->expression.vtype],
676 type_name[exprs[1]->expression.vtype]);
679 switch (exprs[0]->expression.vtype) {
681 if (CanConstFold(exprs[0], exprs[1]))
683 out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
686 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
689 if (CanConstFold(exprs[0], exprs[1]))
690 out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
692 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
695 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
696 type_name[exprs[0]->expression.vtype],
697 type_name[exprs[1]->expression.vtype]);
702 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
703 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
705 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
706 type_name[exprs[1]->expression.vtype],
707 type_name[exprs[0]->expression.vtype]);
710 switch (exprs[0]->expression.vtype) {
712 if (CanConstFold(exprs[0], exprs[1]))
713 out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
715 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
718 if (CanConstFold(exprs[0], exprs[1]))
719 out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
721 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
724 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
725 type_name[exprs[1]->expression.vtype],
726 type_name[exprs[0]->expression.vtype]);
731 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
732 exprs[0]->expression.vtype != TYPE_VECTOR &&
733 exprs[0]->expression.vtype != TYPE_FLOAT &&
734 exprs[1]->expression.vtype != TYPE_VECTOR &&
735 exprs[1]->expression.vtype != TYPE_FLOAT)
737 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
738 type_name[exprs[1]->expression.vtype],
739 type_name[exprs[0]->expression.vtype]);
742 switch (exprs[0]->expression.vtype) {
744 if (exprs[1]->expression.vtype == TYPE_VECTOR)
746 if (CanConstFold(exprs[0], exprs[1]))
747 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
749 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
753 if (CanConstFold(exprs[0], exprs[1]))
754 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
756 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
760 if (exprs[1]->expression.vtype == TYPE_FLOAT)
762 if (CanConstFold(exprs[0], exprs[1]))
763 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
765 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
769 if (CanConstFold(exprs[0], exprs[1]))
770 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
772 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
776 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
777 type_name[exprs[1]->expression.vtype],
778 type_name[exprs[0]->expression.vtype]);
783 if (NotSameType(TYPE_FLOAT)) {
784 parseerror(parser, "invalid types used in expression: cannot divide types %s and %s",
785 type_name[exprs[0]->expression.vtype],
786 type_name[exprs[1]->expression.vtype]);
789 if (CanConstFold(exprs[0], exprs[1]))
790 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
792 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
796 parseerror(parser, "qc does not have a modulo operator");
800 if (NotSameType(TYPE_FLOAT)) {
801 parseerror(parser, "invalid types used in expression: cannot perform bit operations between types %s and %s",
802 type_name[exprs[0]->expression.vtype],
803 type_name[exprs[1]->expression.vtype]);
806 if (CanConstFold(exprs[0], exprs[1]))
807 out = (ast_expression*)parser_const_float(parser,
808 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
809 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
811 out = (ast_expression*)ast_binary_new(ctx,
812 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
816 parseerror(parser, "TODO: bitxor");
821 case opid3('<','<','='):
822 case opid3('>','>','='):
823 parseerror(parser, "TODO: shifts");
827 generated_op += 1; /* INSTR_OR */
829 generated_op += INSTR_AND;
831 if (NotSameType(TYPE_FLOAT)) {
832 parseerror(parser, "invalid types used in expression: cannot perform logical operations between types %s and %s",
833 type_name[exprs[0]->expression.vtype],
834 type_name[exprs[1]->expression.vtype]);
835 parseerror(parser, "TODO: logical ops for arbitrary types using INSTR_NOT");
836 parseerror(parser, "TODO: optional early out");
840 if (CanConstFold(exprs[0], exprs[1]))
841 out = (ast_expression*)parser_const_float(parser,
842 (generated_op == INSTR_OR ? (ConstF(0) || ConstF(1)) : (ConstF(0) && ConstF(1))));
845 if (OPTS_FLAG(PERL_LOGIC) && !ast_compare_type(exprs[0], exprs[1])) {
846 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
847 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
848 parseerror(parser, "invalid types for logical operation with -fperl-logic: %s and %s", ty1, ty2);
851 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
856 if (vec_last(parser->pot) != POT_TERNARY2) {
857 parseerror(parser, "mismatched parenthesis/ternary");
860 vec_pop(parser->pot);
861 if (exprs[1]->expression.vtype != exprs[2]->expression.vtype) {
862 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
863 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
864 parseerror(parser, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
867 if (CanConstFold1(exprs[0]))
868 out = (ConstF(0) ? exprs[1] : exprs[2]);
870 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
874 generated_op += 1; /* INSTR_GT */
876 generated_op += 1; /* INSTR_LT */
877 case opid2('>', '='):
878 generated_op += 1; /* INSTR_GE */
879 case opid2('<', '='):
880 generated_op += INSTR_LE;
881 if (NotSameType(TYPE_FLOAT)) {
882 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
883 type_name[exprs[0]->expression.vtype],
884 type_name[exprs[1]->expression.vtype]);
887 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
889 case opid2('!', '='):
890 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
891 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
892 type_name[exprs[0]->expression.vtype],
893 type_name[exprs[1]->expression.vtype]);
896 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
898 case opid2('=', '='):
899 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
900 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
901 type_name[exprs[0]->expression.vtype],
902 type_name[exprs[1]->expression.vtype]);
905 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
909 if (ast_istype(exprs[0], ast_entfield)) {
910 ast_expression *field = ((ast_entfield*)exprs[0])->field;
911 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
912 exprs[0]->expression.vtype == TYPE_FIELD &&
913 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
915 assignop = type_storep_instr[TYPE_VECTOR];
918 assignop = type_storep_instr[exprs[0]->expression.vtype];
919 if (assignop == AINSTR_END ||
920 !ast_compare_type(field->expression.next, exprs[1]))
922 ast_type_to_string(field->expression.next, ty1, sizeof(ty1));
923 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
924 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
925 field->expression.next->expression.vtype == TYPE_FUNCTION &&
926 exprs[1]->expression.vtype == TYPE_FUNCTION)
928 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
929 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
935 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
940 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
941 exprs[0]->expression.vtype == TYPE_FIELD &&
942 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
944 assignop = type_store_instr[TYPE_VECTOR];
947 assignop = type_store_instr[exprs[0]->expression.vtype];
950 if (assignop == AINSTR_END) {
951 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
952 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
953 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
955 else if (!ast_compare_type(exprs[0], exprs[1])) {
956 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
957 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
958 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
959 exprs[0]->expression.vtype == TYPE_FUNCTION &&
960 exprs[1]->expression.vtype == TYPE_FUNCTION)
962 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
963 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
969 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
972 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
973 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
975 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
977 case opid3('+','+','P'):
978 case opid3('-','-','P'):
980 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
981 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
982 parseerror(parser, "invalid type for prefix increment: %s", ty1);
985 if (op->id == opid3('+','+','P'))
989 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
990 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
992 if (ast_istype(exprs[0], ast_entfield)) {
993 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
995 (ast_expression*)parser_const_float_1(parser));
997 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
999 (ast_expression*)parser_const_float_1(parser));
1002 case opid3('S','+','+'):
1003 case opid3('S','-','-'):
1005 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1006 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1007 parseerror(parser, "invalid type for suffix increment: %s", ty1);
1010 if (op->id == opid3('S','+','+')) {
1011 addop = INSTR_ADD_F;
1012 subop = INSTR_SUB_F;
1014 addop = INSTR_SUB_F;
1015 subop = INSTR_ADD_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));
1031 out = (ast_expression*)ast_binary_new(ctx, subop,
1033 (ast_expression*)parser_const_float_1(parser));
1035 case opid2('+','='):
1036 case opid2('-','='):
1037 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
1038 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
1040 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1041 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1042 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1046 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1047 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1049 if (ast_istype(exprs[0], ast_entfield))
1050 assignop = type_storep_instr[exprs[0]->expression.vtype];
1052 assignop = type_store_instr[exprs[0]->expression.vtype];
1053 switch (exprs[0]->expression.vtype) {
1055 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1056 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
1057 exprs[0], exprs[1]);
1060 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1061 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1062 exprs[0], exprs[1]);
1065 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1066 type_name[exprs[0]->expression.vtype],
1067 type_name[exprs[1]->expression.vtype]);
1071 case opid2('*','='):
1072 case opid2('/','='):
1073 if (exprs[1]->expression.vtype != TYPE_FLOAT ||
1074 !(exprs[0]->expression.vtype == TYPE_FLOAT ||
1075 exprs[0]->expression.vtype == TYPE_VECTOR))
1077 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1078 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1079 parseerror(parser, "invalid types used in expression: %s and %s",
1083 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1084 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1086 if (ast_istype(exprs[0], ast_entfield))
1087 assignop = type_storep_instr[exprs[0]->expression.vtype];
1089 assignop = type_store_instr[exprs[0]->expression.vtype];
1090 switch (exprs[0]->expression.vtype) {
1092 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1093 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1094 exprs[0], exprs[1]);
1097 if (op->id == opid2('*','=')) {
1098 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1099 exprs[0], exprs[1]);
1101 /* there's no DIV_VF */
1102 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
1103 (ast_expression*)parser_const_float_1(parser),
1107 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1112 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1113 type_name[exprs[0]->expression.vtype],
1114 type_name[exprs[1]->expression.vtype]);
1118 case opid2('&','='):
1119 case opid2('|','='):
1120 if (NotSameType(TYPE_FLOAT)) {
1121 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1122 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1123 parseerror(parser, "invalid types used in expression: %s and %s",
1127 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1128 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1130 if (ast_istype(exprs[0], ast_entfield))
1131 assignop = type_storep_instr[exprs[0]->expression.vtype];
1133 assignop = type_store_instr[exprs[0]->expression.vtype];
1134 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1135 (op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1136 exprs[0], exprs[1]);
1138 case opid3('&','~','='):
1139 /* This is like: a &= ~(b);
1140 * But QC has no bitwise-not, so we implement it as
1143 if (NotSameType(TYPE_FLOAT)) {
1144 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1145 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1146 parseerror(parser, "invalid types used in expression: %s and %s",
1150 if (ast_istype(exprs[0], ast_entfield))
1151 assignop = type_storep_instr[exprs[0]->expression.vtype];
1153 assignop = type_store_instr[exprs[0]->expression.vtype];
1154 out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1157 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1158 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1160 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1161 asbinstore->keep_dest = true;
1162 out = (ast_expression*)asbinstore;
1168 parseerror(parser, "failed to apply operand %s", op->op);
1172 DEBUGSHUNTDO(con_out("applied %s\n", op->op));
1173 vec_push(sy->out, syexp(ctx, out));
1177 static bool parser_close_call(parser_t *parser, shunt *sy)
1179 /* was a function call */
1180 ast_expression *fun;
1186 vec_shrinkby(sy->ops, 1);
1187 fid = sy->ops[vec_size(sy->ops)].off;
1189 /* out[fid] is the function
1190 * everything above is parameters...
1191 * 0 params = nothing
1192 * 1 params = ast_expression
1196 if (vec_size(sy->out) < 1 || vec_size(sy->out) <= fid) {
1197 parseerror(parser, "internal error: function call needs function and parameter list...");
1201 fun = sy->out[fid].out;
1203 if (fun == intrinsic_debug_typestring) {
1205 if (fid+2 != vec_size(sy->out) ||
1206 vec_last(sy->out).block)
1208 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1211 ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
1212 ast_unref(vec_last(sy->out).out);
1213 sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
1214 (ast_expression*)parser_const_string(parser, ty, false));
1215 vec_shrinkby(sy->out, 1);
1219 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1221 parseerror(parser, "internal error: failed to create ast_call node");
1225 if (fid+1 == vec_size(sy->out)) {
1228 } else if (fid+2 == vec_size(sy->out)) {
1230 vec_shrinkby(sy->out, 1);
1231 params = sy->out[vec_size(sy->out)].block;
1235 vec_push(call->params, sy->out[vec_size(sy->out)].out);
1237 paramcount = vec_size(params->exprs);
1238 call->params = params->exprs;
1239 params->exprs = NULL;
1242 if (!ast_call_check_types(call))
1245 parseerror(parser, "invalid function call");
1249 /* overwrite fid, the function, with a call */
1250 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1252 if (fun->expression.vtype != TYPE_FUNCTION) {
1253 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
1257 if (!fun->expression.next) {
1258 parseerror(parser, "could not determine function return type");
1261 if (vec_size(fun->expression.params) != paramcount &&
1262 !(fun->expression.variadic &&
1263 vec_size(fun->expression.params) < paramcount))
1266 const char *fewmany = (vec_size(fun->expression.params) > paramcount) ? "few" : "many";
1268 fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1269 if (opts.standard == COMPILER_GMQCC)
1272 parseerror(parser, "too %s parameters for call to %s: expected %i, got %i\n"
1273 " -> `%s` has been declared here: %s:%i",
1274 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1275 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1277 parseerror(parser, "too %s parameters for function call: expected %i, got %i\n"
1278 " -> it has been declared here: %s:%i",
1279 fewmany, (int)vec_size(fun->expression.params), (int)paramcount,
1280 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1286 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1287 "too %s parameters for call to %s: expected %i, got %i\n"
1288 " -> `%s` has been declared here: %s:%i",
1289 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1290 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1292 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1293 "too %s parameters for function call: expected %i, got %i\n"
1294 " -> it has been declared here: %s:%i",
1295 fewmany, (int)vec_size(fun->expression.params), (int)paramcount,
1296 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1304 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
1306 if (!vec_size(sy->ops)) {
1307 parseerror(parser, "unmatched closing paren");
1310 /* this would for bit a + (x) because there are no operators inside (x)
1311 if (sy->ops[vec_size(sy->ops)-1].paren == 1) {
1312 parseerror(parser, "empty parenthesis expression");
1316 while (vec_size(sy->ops)) {
1317 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_FUNC) {
1318 if (!parser_close_call(parser, sy))
1322 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_EXPR) {
1323 vec_shrinkby(sy->ops, 1);
1324 return !functions_only;
1326 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_INDEX) {
1329 /* pop off the parenthesis */
1330 vec_shrinkby(sy->ops, 1);
1331 /* then apply the index operator */
1332 if (!parser_sy_apply_operator(parser, sy))
1336 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_TERNARY) {
1339 if (vec_last(parser->pot) != POT_TERNARY1) {
1340 parseerror(parser, "mismatched colon in ternary expression (missing closing paren?)");
1343 vec_last(parser->pot) = POT_TERNARY2;
1344 /* pop off the parenthesis */
1345 vec_shrinkby(sy->ops, 1);
1348 if (!parser_sy_apply_operator(parser, sy))
1354 static void parser_reclassify_token(parser_t *parser)
1357 for (i = 0; i < operator_count; ++i) {
1358 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1359 parser->tok = TOKEN_OPERATOR;
1365 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma)
1367 ast_expression *expr = NULL;
1369 bool wantop = false;
1370 bool gotmemberof = false;
1372 /* count the parens because an if starts with one, so the
1373 * end of a condition is an unmatched closing paren
1381 parser->lex->flags.noops = false;
1383 parser_reclassify_token(parser);
1388 gotmemberof = false;
1390 parser->memberof = 0;
1392 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1393 parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "_"))
1395 /* a translatable string */
1399 parseerror(parser, "expected operator or end of statement, got constant");
1403 parser->lex->flags.noops = true;
1404 if (!parser_next(parser) || parser->tok != '(') {
1405 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1408 parser->lex->flags.noops = false;
1409 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1410 parseerror(parser, "expected a constant string in translatable-string extension");
1413 val = parser_const_string(parser, parser_tokval(parser), true);
1417 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1418 DEBUGSHUNTDO(con_out("push string\n"));
1420 if (!parser_next(parser) || parser->tok != ')') {
1421 parseerror(parser, "expected closing paren after translatable string");
1425 else if (parser->tok == TOKEN_IDENT)
1427 ast_expression *var;
1429 parseerror(parser, "expected operator or end of statement");
1434 if (opts.standard == COMPILER_GMQCC)
1436 if (parser->memberof == TYPE_ENTITY) {
1437 /* still get vars first since there could be a fieldpointer */
1438 var = parser_find_var(parser, parser_tokval(parser));
1440 var = parser_find_field(parser, parser_tokval(parser));
1442 else if (parser->memberof == TYPE_VECTOR)
1444 parseerror(parser, "TODO: implement effective vector member access");
1447 else if (parser->memberof) {
1448 parseerror(parser, "namespace for member not found");
1452 var = parser_find_var(parser, parser_tokval(parser));
1454 var = parser_find_var(parser, parser_tokval(parser));
1456 var = parser_find_field(parser, parser_tokval(parser));
1460 if (!strcmp(parser_tokval(parser), "__builtin_debug_typestring")) {
1461 var = (ast_expression*)intrinsic_debug_typestring;
1466 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1472 if (ast_istype(var, ast_value)) {
1473 ((ast_value*)var)->uses++;
1475 else if (ast_istype(var, ast_member)) {
1476 ast_member *mem = (ast_member*)var;
1477 if (ast_istype(mem->owner, ast_value))
1478 ((ast_value*)(mem->owner))->uses++;
1481 vec_push(sy.out, syexp(parser_ctx(parser), var));
1482 DEBUGSHUNTDO(con_out("push %s\n", parser_tokval(parser)));
1484 else if (parser->tok == TOKEN_FLOATCONST) {
1487 parseerror(parser, "expected operator or end of statement, got constant");
1491 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1494 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1495 DEBUGSHUNTDO(con_out("push %g\n", parser_token(parser)->constval.f));
1497 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1500 parseerror(parser, "expected operator or end of statement, got constant");
1504 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1507 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1508 DEBUGSHUNTDO(con_out("push %i\n", parser_token(parser)->constval.i));
1510 else if (parser->tok == TOKEN_STRINGCONST) {
1513 parseerror(parser, "expected operator or end of statement, got constant");
1517 val = parser_const_string(parser, parser_tokval(parser), false);
1520 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1521 DEBUGSHUNTDO(con_out("push string\n"));
1523 else if (parser->tok == TOKEN_VECTORCONST) {
1526 parseerror(parser, "expected operator or end of statement, got constant");
1530 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1533 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1534 DEBUGSHUNTDO(con_out("push '%g %g %g'\n",
1535 parser_token(parser)->constval.v.x,
1536 parser_token(parser)->constval.v.y,
1537 parser_token(parser)->constval.v.z));
1539 else if (parser->tok == '(') {
1540 parseerror(parser, "internal error: '(' should be classified as operator");
1543 else if (parser->tok == '[') {
1544 parseerror(parser, "internal error: '[' should be classified as operator");
1547 else if (parser->tok == ')') {
1549 DEBUGSHUNTDO(con_out("do[op] )\n"));
1553 /* we do expect an operator next */
1554 /* closing an opening paren */
1555 if (!parser_close_paren(parser, &sy, false))
1557 if (vec_last(parser->pot) != POT_PAREN) {
1558 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1561 vec_pop(parser->pot);
1563 DEBUGSHUNTDO(con_out("do[nop] )\n"));
1567 /* allowed for function calls */
1568 if (!parser_close_paren(parser, &sy, true))
1570 if (vec_last(parser->pot) != POT_PAREN) {
1571 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1574 vec_pop(parser->pot);
1578 else if (parser->tok == ']') {
1580 parseerror(parser, "operand expected");
1584 if (!parser_close_paren(parser, &sy, false))
1586 if (vec_last(parser->pot) != POT_PAREN) {
1587 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1590 vec_pop(parser->pot);
1593 else if (parser->tok == TOKEN_TYPENAME) {
1594 parseerror(parser, "unexpected typename");
1597 else if (parser->tok != TOKEN_OPERATOR) {
1599 parseerror(parser, "expected operator or end of statement");
1606 /* classify the operator */
1607 const oper_info *op;
1608 const oper_info *olast = NULL;
1610 for (o = 0; o < operator_count; ++o) {
1611 if ((!(operators[o].flags & OP_PREFIX) == wantop) &&
1612 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1613 !strcmp(parser_tokval(parser), operators[o].op))
1618 if (o == operator_count) {
1619 /* no operator found... must be the end of the statement */
1622 /* found an operator */
1625 /* when declaring variables, a comma starts a new variable */
1626 if (op->id == opid1(',') && !parens && stopatcomma) {
1627 /* fixup the token */
1632 /* a colon without a pervious question mark cannot be a ternary */
1633 if (!ternaries && op->id == opid2(':','?')) {
1638 if (op->id == opid1(',')) {
1639 if (vec_size(parser->pot) && vec_last(parser->pot) == POT_TERNARY2) {
1640 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
1644 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1645 olast = &operators[vec_last(sy.ops).etype-1];
1648 (op->prec < olast->prec) ||
1649 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1651 if (!parser_sy_apply_operator(parser, &sy))
1653 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1654 olast = &operators[vec_last(sy.ops).etype-1];
1659 if (op->id == opid1('.') && opts.standard == COMPILER_GMQCC) {
1660 /* for gmqcc standard: open up the namespace of the previous type */
1661 ast_expression *prevex = vec_last(sy.out).out;
1663 parseerror(parser, "unexpected member operator");
1666 if (prevex->expression.vtype == TYPE_ENTITY)
1667 parser->memberof = TYPE_ENTITY;
1668 else if (prevex->expression.vtype == TYPE_VECTOR)
1669 parser->memberof = TYPE_VECTOR;
1671 parseerror(parser, "type error: type has no members");
1677 if (op->id == opid1('(')) {
1679 size_t sycount = vec_size(sy.out);
1680 DEBUGSHUNTDO(con_out("push [op] (\n"));
1681 ++parens; vec_push(parser->pot, POT_PAREN);
1682 /* we expected an operator, this is the function-call operator */
1683 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_FUNC, sycount-1));
1685 ++parens; vec_push(parser->pot, POT_PAREN);
1686 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_EXPR, 0));
1687 DEBUGSHUNTDO(con_out("push [nop] (\n"));
1690 } else if (op->id == opid1('[')) {
1692 parseerror(parser, "unexpected array subscript");
1695 ++parens; vec_push(parser->pot, POT_PAREN);
1696 /* push both the operator and the paren, this makes life easier */
1697 vec_push(sy.ops, syop(parser_ctx(parser), op));
1698 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_INDEX, 0));
1700 } else if (op->id == opid2('?',':')) {
1701 vec_push(sy.ops, syop(parser_ctx(parser), op));
1702 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_TERNARY, 0));
1705 vec_push(parser->pot, POT_TERNARY1);
1706 } else if (op->id == opid2(':','?')) {
1707 if (!vec_size(parser->pot)) {
1708 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1711 if (vec_last(parser->pot) != POT_TERNARY1) {
1712 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1715 if (!parser_close_paren(parser, &sy, false))
1717 vec_push(sy.ops, syop(parser_ctx(parser), op));
1721 DEBUGSHUNTDO(con_out("push operator %s\n", op->op));
1722 vec_push(sy.ops, syop(parser_ctx(parser), op));
1723 wantop = !!(op->flags & OP_SUFFIX);
1726 if (!parser_next(parser)) {
1729 if (parser->tok == ';' ||
1730 (!parens && parser->tok == ']'))
1736 while (vec_size(sy.ops)) {
1737 if (!parser_sy_apply_operator(parser, &sy))
1741 parser->lex->flags.noops = true;
1742 if (!vec_size(sy.out)) {
1743 parseerror(parser, "empty expression");
1746 expr = sy.out[0].out;
1749 DEBUGSHUNTDO(con_out("shunt done\n"));
1750 if (vec_size(parser->pot)) {
1751 parseerror(parser, "internal error: vec_size(parser->pot) = %lu", (unsigned long)vec_size(parser->pot));
1754 vec_free(parser->pot);
1758 parser->lex->flags.noops = true;
1764 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma)
1766 ast_expression *e = parse_expression_leave(parser, stopatcomma);
1769 if (!parser_next(parser)) {
1776 static void parser_enterblock(parser_t *parser)
1778 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
1779 vec_push(parser->_blocklocals, vec_size(parser->_locals));
1780 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
1781 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
1782 vec_push(parser->_block_ctx, parser_ctx(parser));
1785 static bool parser_leaveblock(parser_t *parser)
1788 size_t locals, typedefs;
1790 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
1791 parseerror(parser, "internal error: parser_leaveblock with no block");
1795 util_htdel(vec_last(parser->variables));
1796 vec_pop(parser->variables);
1797 if (!vec_size(parser->_blocklocals)) {
1798 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
1802 locals = vec_last(parser->_blocklocals);
1803 vec_pop(parser->_blocklocals);
1804 while (vec_size(parser->_locals) != locals) {
1805 ast_expression *e = vec_last(parser->_locals);
1806 ast_value *v = (ast_value*)e;
1807 vec_pop(parser->_locals);
1808 if (ast_istype(e, ast_value) && !v->uses) {
1809 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name)) {
1816 typedefs = vec_last(parser->_blocktypedefs);
1817 while (vec_size(parser->_typedefs) != typedefs) {
1818 ast_delete(vec_last(parser->_typedefs));
1819 vec_pop(parser->_typedefs);
1821 util_htdel(vec_last(parser->typedefs));
1822 vec_pop(parser->typedefs);
1824 vec_pop(parser->_block_ctx);
1828 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
1830 vec_push(parser->_locals, e);
1831 util_htset(vec_last(parser->variables), name, (void*)e);
1834 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
1837 ast_expression *cond, *ontrue, *onfalse = NULL;
1840 lex_ctx ctx = parser_ctx(parser);
1842 (void)block; /* not touching */
1844 /* skip the 'if', parse an optional 'not' and check for an opening paren */
1845 if (!parser_next(parser)) {
1846 parseerror(parser, "expected condition or 'not'");
1849 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
1851 if (!parser_next(parser)) {
1852 parseerror(parser, "expected condition in parenthesis");
1856 if (parser->tok != '(') {
1857 parseerror(parser, "expected 'if' condition in parenthesis");
1860 /* parse into the expression */
1861 if (!parser_next(parser)) {
1862 parseerror(parser, "expected 'if' condition after opening paren");
1865 /* parse the condition */
1866 cond = parse_expression_leave(parser, false);
1870 if (parser->tok != ')') {
1871 parseerror(parser, "expected closing paren after 'if' condition");
1875 /* parse into the 'then' branch */
1876 if (!parser_next(parser)) {
1877 parseerror(parser, "expected statement for on-true branch of 'if'");
1881 if (!parse_statement_or_block(parser, &ontrue)) {
1885 /* check for an else */
1886 if (!strcmp(parser_tokval(parser), "else")) {
1887 /* parse into the 'else' branch */
1888 if (!parser_next(parser)) {
1889 parseerror(parser, "expected on-false branch after 'else'");
1894 if (!parse_statement_or_block(parser, &onfalse)) {
1902 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
1904 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
1905 *out = (ast_expression*)ifthen;
1909 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
1912 ast_expression *cond, *ontrue;
1914 lex_ctx ctx = parser_ctx(parser);
1916 (void)block; /* not touching */
1918 /* skip the 'while' and check for opening paren */
1919 if (!parser_next(parser) || parser->tok != '(') {
1920 parseerror(parser, "expected 'while' condition in parenthesis");
1923 /* parse into the expression */
1924 if (!parser_next(parser)) {
1925 parseerror(parser, "expected 'while' condition after opening paren");
1928 /* parse the condition */
1929 cond = parse_expression_leave(parser, false);
1933 if (parser->tok != ')') {
1934 parseerror(parser, "expected closing paren after 'while' condition");
1938 /* parse into the 'then' branch */
1939 if (!parser_next(parser)) {
1940 parseerror(parser, "expected while-loop body");
1944 if (!parse_statement_or_block(parser, &ontrue)) {
1949 aloop = ast_loop_new(ctx, NULL, cond, NULL, NULL, ontrue);
1950 *out = (ast_expression*)aloop;
1954 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
1957 ast_expression *cond, *ontrue;
1959 lex_ctx ctx = parser_ctx(parser);
1961 (void)block; /* not touching */
1963 /* skip the 'do' and get the body */
1964 if (!parser_next(parser)) {
1965 parseerror(parser, "expected loop body");
1968 if (!parse_statement_or_block(parser, &ontrue))
1971 /* expect the "while" */
1972 if (parser->tok != TOKEN_KEYWORD ||
1973 strcmp(parser_tokval(parser), "while"))
1975 parseerror(parser, "expected 'while' and condition");
1980 /* skip the 'while' and check for opening paren */
1981 if (!parser_next(parser) || parser->tok != '(') {
1982 parseerror(parser, "expected 'while' condition in parenthesis");
1986 /* parse into the expression */
1987 if (!parser_next(parser)) {
1988 parseerror(parser, "expected 'while' condition after opening paren");
1992 /* parse the condition */
1993 cond = parse_expression_leave(parser, false);
1997 if (parser->tok != ')') {
1998 parseerror(parser, "expected closing paren after 'while' condition");
2004 if (!parser_next(parser) || parser->tok != ';') {
2005 parseerror(parser, "expected semicolon after condition");
2011 if (!parser_next(parser)) {
2012 parseerror(parser, "parse error");
2018 aloop = ast_loop_new(ctx, NULL, NULL, cond, NULL, ontrue);
2019 *out = (ast_expression*)aloop;
2023 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2026 ast_expression *initexpr, *cond, *increment, *ontrue;
2030 lex_ctx ctx = parser_ctx(parser);
2032 parser_enterblock(parser);
2039 /* skip the 'while' and check for opening paren */
2040 if (!parser_next(parser) || parser->tok != '(') {
2041 parseerror(parser, "expected 'for' expressions in parenthesis");
2044 /* parse into the expression */
2045 if (!parser_next(parser)) {
2046 parseerror(parser, "expected 'for' initializer after opening paren");
2051 if (parser->tok == TOKEN_IDENT)
2052 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2054 if (typevar || parser->tok == TOKEN_TYPENAME) {
2055 if (opts.standard != COMPILER_GMQCC) {
2056 if (parsewarning(parser, WARN_EXTENSIONS,
2057 "current standard does not allow variable declarations in for-loop initializers"))
2060 if (!parse_variable(parser, block, true, CV_VAR, typevar, false))
2063 else if (parser->tok != ';')
2065 initexpr = parse_expression_leave(parser, false);
2070 /* move on to condition */
2071 if (parser->tok != ';') {
2072 parseerror(parser, "expected semicolon after for-loop initializer");
2075 if (!parser_next(parser)) {
2076 parseerror(parser, "expected for-loop condition");
2080 /* parse the condition */
2081 if (parser->tok != ';') {
2082 cond = parse_expression_leave(parser, false);
2087 /* move on to incrementor */
2088 if (parser->tok != ';') {
2089 parseerror(parser, "expected semicolon after for-loop initializer");
2092 if (!parser_next(parser)) {
2093 parseerror(parser, "expected for-loop condition");
2097 /* parse the incrementor */
2098 if (parser->tok != ')') {
2099 increment = parse_expression_leave(parser, false);
2102 if (!ast_side_effects(increment)) {
2103 if (genwarning(ast_ctx(increment), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2109 if (parser->tok != ')') {
2110 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2113 /* parse into the 'then' branch */
2114 if (!parser_next(parser)) {
2115 parseerror(parser, "expected for-loop body");
2118 if (!parse_statement_or_block(parser, &ontrue))
2121 aloop = ast_loop_new(ctx, initexpr, cond, NULL, increment, ontrue);
2122 *out = (ast_expression*)aloop;
2124 if (!parser_leaveblock(parser))
2128 if (initexpr) ast_delete(initexpr);
2129 if (cond) ast_delete(cond);
2130 if (increment) ast_delete(increment);
2131 (void)!parser_leaveblock(parser);
2135 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2137 ast_expression *exp = NULL;
2138 ast_return *ret = NULL;
2139 ast_value *expected = parser->function->vtype;
2141 lex_ctx ctx = parser_ctx(parser);
2143 (void)block; /* not touching */
2145 if (!parser_next(parser)) {
2146 parseerror(parser, "expected return expression");
2150 if (parser->tok != ';') {
2151 exp = parse_expression(parser, false);
2155 if (exp->expression.vtype != expected->expression.next->expression.vtype) {
2156 parseerror(parser, "return with invalid expression");
2159 ret = ast_return_new(exp->expression.node.context, exp);
2165 if (!parser_next(parser))
2166 parseerror(parser, "parse error");
2167 if (expected->expression.next->expression.vtype != TYPE_VOID) {
2168 if (opts.standard != COMPILER_GMQCC)
2169 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2171 parseerror(parser, "return without value");
2173 ret = ast_return_new(ctx, NULL);
2175 *out = (ast_expression*)ret;
2179 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2181 lex_ctx ctx = parser_ctx(parser);
2183 (void)block; /* not touching */
2185 if (!parser_next(parser) || parser->tok != ';') {
2186 parseerror(parser, "expected semicolon");
2190 if (!parser_next(parser))
2191 parseerror(parser, "parse error");
2193 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue);
2197 /* returns true when it was a variable qualifier, false otherwise!
2198 * on error, cvq is set to CV_WRONG
2200 static bool parse_var_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref)
2202 bool had_const = false;
2203 bool had_var = false;
2204 bool had_noref = false;
2207 if (!strcmp(parser_tokval(parser), "const"))
2209 else if (!strcmp(parser_tokval(parser), "var"))
2211 else if (with_local && !strcmp(parser_tokval(parser), "local"))
2213 else if (!strcmp(parser_tokval(parser), "noref"))
2215 else if (!had_const && !had_var && !had_noref) {
2220 if (!parser_next(parser))
2232 parseerror(parser, "parse error after variable qualifier");
2237 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
2239 ast_expression *operand;
2242 ast_switch *switchnode;
2243 ast_switch_case swcase;
2248 lex_ctx ctx = parser_ctx(parser);
2250 (void)block; /* not touching */
2253 /* parse over the opening paren */
2254 if (!parser_next(parser) || parser->tok != '(') {
2255 parseerror(parser, "expected switch operand in parenthesis");
2259 /* parse into the expression */
2260 if (!parser_next(parser)) {
2261 parseerror(parser, "expected switch operand");
2264 /* parse the operand */
2265 operand = parse_expression_leave(parser, false);
2269 switchnode = ast_switch_new(ctx, operand);
2272 if (parser->tok != ')') {
2273 ast_delete(switchnode);
2274 parseerror(parser, "expected closing paren after 'switch' operand");
2278 /* parse over the opening paren */
2279 if (!parser_next(parser) || parser->tok != '{') {
2280 ast_delete(switchnode);
2281 parseerror(parser, "expected list of cases");
2285 if (!parser_next(parser)) {
2286 ast_delete(switchnode);
2287 parseerror(parser, "expected 'case' or 'default'");
2291 /* new block; allow some variables to be declared here */
2292 parser_enterblock(parser);
2295 if (parser->tok == TOKEN_IDENT)
2296 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2297 if (typevar || parser->tok == TOKEN_TYPENAME) {
2298 if (!parse_variable(parser, block, false, CV_NONE, typevar, false)) {
2299 ast_delete(switchnode);
2304 if (parse_var_qualifiers(parser, true, &cvq, &noref))
2306 if (cvq == CV_WRONG) {
2307 ast_delete(switchnode);
2310 if (!parse_variable(parser, block, false, cvq, NULL, noref)) {
2311 ast_delete(switchnode);
2320 while (parser->tok != '}') {
2321 ast_block *caseblock;
2323 if (parser->tok != TOKEN_KEYWORD) {
2324 ast_delete(switchnode);
2325 parseerror(parser, "expected 'case' or 'default'");
2328 if (!strcmp(parser_tokval(parser), "case")) {
2329 if (!parser_next(parser)) {
2330 ast_delete(switchnode);
2331 parseerror(parser, "expected expression for case");
2334 swcase.value = parse_expression_leave(parser, false);
2335 if (!swcase.value) {
2336 ast_delete(switchnode);
2337 parseerror(parser, "expected expression for case");
2340 if (!OPTS_FLAG(RELAXED_SWITCH)) {
2341 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
2342 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
2348 else if (!strcmp(parser_tokval(parser), "default")) {
2349 swcase.value = NULL;
2350 if (!parser_next(parser)) {
2351 ast_delete(switchnode);
2352 parseerror(parser, "expected colon");
2357 /* Now the colon and body */
2358 if (parser->tok != ':') {
2359 if (swcase.value) ast_unref(swcase.value);
2360 ast_delete(switchnode);
2361 parseerror(parser, "expected colon");
2365 if (!parser_next(parser)) {
2366 if (swcase.value) ast_unref(swcase.value);
2367 ast_delete(switchnode);
2368 parseerror(parser, "expected statements or case");
2371 caseblock = ast_block_new(parser_ctx(parser));
2373 if (swcase.value) ast_unref(swcase.value);
2374 ast_delete(switchnode);
2377 swcase.code = (ast_expression*)caseblock;
2378 vec_push(switchnode->cases, swcase);
2380 ast_expression *expr;
2381 if (parser->tok == '}')
2383 if (parser->tok == TOKEN_KEYWORD) {
2384 if (!strcmp(parser_tokval(parser), "case") ||
2385 !strcmp(parser_tokval(parser), "default"))
2390 if (!parse_statement(parser, caseblock, &expr, true)) {
2391 ast_delete(switchnode);
2396 if (!ast_block_add_expr(caseblock, expr)) {
2397 ast_delete(switchnode);
2403 parser_leaveblock(parser);
2406 if (parser->tok != '}') {
2407 ast_delete(switchnode);
2408 parseerror(parser, "expected closing paren of case list");
2411 if (!parser_next(parser)) {
2412 ast_delete(switchnode);
2413 parseerror(parser, "parse error after switch");
2416 *out = (ast_expression*)switchnode;
2420 static bool parse_goto(parser_t *parser, ast_expression **out)
2425 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2426 parseerror(parser, "expected label name after `goto`");
2430 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
2432 for (i = 0; i < vec_size(parser->labels); ++i) {
2433 if (!strcmp(parser->labels[i]->name, parser_tokval(parser))) {
2434 ast_goto_set_label(gt, parser->labels[i]);
2438 if (i == vec_size(parser->labels))
2439 vec_push(parser->gotos, gt);
2441 if (!parser_next(parser) || parser->tok != ';') {
2442 parseerror(parser, "semicolon expected after goto label");
2445 if (!parser_next(parser)) {
2446 parseerror(parser, "parse error after goto");
2450 *out = (ast_expression*)gt;
2454 static bool parse_skipwhite(parser_t *parser)
2457 if (!parser_next(parser))
2459 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
2460 return parser->tok < TOKEN_ERROR;
2463 static bool parse_eol(parser_t *parser)
2465 if (!parse_skipwhite(parser))
2467 return parser->tok == TOKEN_EOL;
2470 static bool parse_pragma_do(parser_t *parser)
2472 if (!parser_next(parser) ||
2473 parser->tok != TOKEN_IDENT ||
2474 strcmp(parser_tokval(parser), "pragma"))
2476 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
2479 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
2480 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
2484 if (!strcmp(parser_tokval(parser), "noref")) {
2485 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
2486 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
2489 parser->noref = !!parser_token(parser)->constval.i;
2490 if (!parse_eol(parser)) {
2491 parseerror(parser, "parse error after `noref` pragma");
2497 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
2504 static bool parse_pragma(parser_t *parser)
2507 parser->lex->flags.preprocessing = true;
2508 parser->lex->flags.mergelines = true;
2509 rv = parse_pragma_do(parser);
2510 if (parser->tok != TOKEN_EOL) {
2511 parseerror(parser, "junk after pragma");
2514 parser->lex->flags.preprocessing = false;
2515 parser->lex->flags.mergelines = false;
2516 if (!parser_next(parser)) {
2517 parseerror(parser, "parse error after pragma");
2523 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
2527 ast_value *typevar = NULL;
2531 if (parser->tok == TOKEN_IDENT)
2532 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2534 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
2536 /* local variable */
2538 parseerror(parser, "cannot declare a variable from here");
2541 if (opts.standard == COMPILER_QCC) {
2542 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
2545 if (!parse_variable(parser, block, false, CV_NONE, typevar, false))
2549 else if (parse_var_qualifiers(parser, !!block, &cvq, &noref))
2551 if (cvq == CV_WRONG)
2553 return parse_variable(parser, block, true, cvq, NULL, noref);
2555 else if (parser->tok == TOKEN_KEYWORD)
2557 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
2562 if (!parser_next(parser)) {
2563 parseerror(parser, "parse error after __builtin_debug_printtype");
2567 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
2569 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
2570 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
2571 if (!parser_next(parser)) {
2572 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
2578 if (!parse_statement(parser, block, out, allow_cases))
2581 con_out("__builtin_debug_printtype: got no output node\n");
2584 ast_type_to_string(*out, ty, sizeof(ty));
2585 con_out("__builtin_debug_printtype: `%s`\n", ty);
2590 else if (!strcmp(parser_tokval(parser), "return"))
2592 return parse_return(parser, block, out);
2594 else if (!strcmp(parser_tokval(parser), "if"))
2596 return parse_if(parser, block, out);
2598 else if (!strcmp(parser_tokval(parser), "while"))
2600 return parse_while(parser, block, out);
2602 else if (!strcmp(parser_tokval(parser), "do"))
2604 return parse_dowhile(parser, block, out);
2606 else if (!strcmp(parser_tokval(parser), "for"))
2608 if (opts.standard == COMPILER_QCC) {
2609 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
2612 return parse_for(parser, block, out);
2614 else if (!strcmp(parser_tokval(parser), "break"))
2616 return parse_break_continue(parser, block, out, false);
2618 else if (!strcmp(parser_tokval(parser), "continue"))
2620 return parse_break_continue(parser, block, out, true);
2622 else if (!strcmp(parser_tokval(parser), "switch"))
2624 return parse_switch(parser, block, out);
2626 else if (!strcmp(parser_tokval(parser), "case") ||
2627 !strcmp(parser_tokval(parser), "default"))
2630 parseerror(parser, "unexpected 'case' label");
2635 else if (!strcmp(parser_tokval(parser), "goto"))
2637 return parse_goto(parser, out);
2639 else if (!strcmp(parser_tokval(parser), "typedef"))
2641 if (!parser_next(parser)) {
2642 parseerror(parser, "expected type definition after 'typedef'");
2645 return parse_typedef(parser);
2647 parseerror(parser, "Unexpected keyword");
2650 else if (parser->tok == '{')
2653 inner = parse_block(parser);
2656 *out = (ast_expression*)inner;
2659 else if (parser->tok == ':')
2663 if (!parser_next(parser)) {
2664 parseerror(parser, "expected label name");
2667 if (parser->tok != TOKEN_IDENT) {
2668 parseerror(parser, "label must be an identifier");
2671 label = ast_label_new(parser_ctx(parser), parser_tokval(parser));
2674 vec_push(parser->labels, label);
2675 *out = (ast_expression*)label;
2676 if (!parser_next(parser)) {
2677 parseerror(parser, "parse error after label");
2680 for (i = 0; i < vec_size(parser->gotos); ++i) {
2681 if (!strcmp(parser->gotos[i]->name, label->name)) {
2682 ast_goto_set_label(parser->gotos[i], label);
2683 vec_remove(parser->gotos, i, 1);
2689 else if (parser->tok == ';')
2691 if (!parser_next(parser)) {
2692 parseerror(parser, "parse error after empty statement");
2699 ast_expression *exp = parse_expression(parser, false);
2703 if (!ast_side_effects(exp)) {
2704 if (genwarning(ast_ctx(exp), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2711 static bool parse_block_into(parser_t *parser, ast_block *block)
2715 parser_enterblock(parser);
2717 if (!parser_next(parser)) { /* skip the '{' */
2718 parseerror(parser, "expected function body");
2722 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
2724 ast_expression *expr = NULL;
2725 if (parser->tok == '}')
2728 if (!parse_statement(parser, block, &expr, false)) {
2729 /* parseerror(parser, "parse error"); */
2735 if (!ast_block_add_expr(block, expr)) {
2742 if (parser->tok != '}') {
2745 (void)parser_next(parser);
2749 if (!parser_leaveblock(parser))
2751 return retval && !!block;
2754 static ast_block* parse_block(parser_t *parser)
2757 block = ast_block_new(parser_ctx(parser));
2760 if (!parse_block_into(parser, block)) {
2761 ast_block_delete(block);
2767 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
2769 if (parser->tok == '{') {
2770 *out = (ast_expression*)parse_block(parser);
2773 return parse_statement(parser, NULL, out, false);
2776 static bool create_vector_members(ast_value *var, ast_member **me)
2779 size_t len = strlen(var->name);
2781 for (i = 0; i < 3; ++i) {
2782 char *name = mem_a(len+3);
2783 memcpy(name, var->name, len);
2785 name[len+1] = 'x'+i;
2787 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
2796 do { ast_member_delete(me[--i]); } while(i);
2800 static bool parse_function_body(parser_t *parser, ast_value *var)
2802 ast_block *block = NULL;
2807 ast_expression *framenum = NULL;
2808 ast_expression *nextthink = NULL;
2809 /* None of the following have to be deleted */
2810 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
2811 ast_expression *gbl_time = NULL, *gbl_self = NULL;
2812 bool has_frame_think;
2816 has_frame_think = false;
2817 old = parser->function;
2819 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
2820 parseerror(parser, "gotos/labels leaking");
2824 if (var->expression.variadic) {
2825 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
2826 "variadic function with implementation will not be able to access additional parameters"))
2832 if (parser->tok == '[') {
2833 /* got a frame definition: [ framenum, nextthink ]
2834 * this translates to:
2835 * self.frame = framenum;
2836 * self.nextthink = time + 0.1;
2837 * self.think = nextthink;
2841 fld_think = parser_find_field(parser, "think");
2842 fld_nextthink = parser_find_field(parser, "nextthink");
2843 fld_frame = parser_find_field(parser, "frame");
2844 if (!fld_think || !fld_nextthink || !fld_frame) {
2845 parseerror(parser, "cannot use [frame,think] notation without the required fields");
2846 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
2849 gbl_time = parser_find_global(parser, "time");
2850 gbl_self = parser_find_global(parser, "self");
2851 if (!gbl_time || !gbl_self) {
2852 parseerror(parser, "cannot use [frame,think] notation without the required globals");
2853 parseerror(parser, "please declare the following globals: `time`, `self`");
2857 if (!parser_next(parser))
2860 framenum = parse_expression_leave(parser, true);
2862 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
2865 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
2866 ast_unref(framenum);
2867 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
2871 if (parser->tok != ',') {
2872 ast_unref(framenum);
2873 parseerror(parser, "expected comma after frame number in [frame,think] notation");
2874 parseerror(parser, "Got a %i\n", parser->tok);
2878 if (!parser_next(parser)) {
2879 ast_unref(framenum);
2883 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
2885 /* qc allows the use of not-yet-declared functions here
2886 * - this automatically creates a prototype */
2887 ast_value *thinkfunc;
2888 ast_expression *functype = fld_think->expression.next;
2890 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
2891 if (!thinkfunc || !ast_type_adopt(thinkfunc, functype)) {
2892 ast_unref(framenum);
2893 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
2897 if (!parser_next(parser)) {
2898 ast_unref(framenum);
2899 ast_delete(thinkfunc);
2903 vec_push(parser->globals, (ast_expression*)thinkfunc);
2904 util_htset(parser->htglobals, thinkfunc->name, thinkfunc);
2905 nextthink = (ast_expression*)thinkfunc;
2908 nextthink = parse_expression_leave(parser, true);
2910 ast_unref(framenum);
2911 parseerror(parser, "expected a think-function in [frame,think] notation");
2916 if (!ast_istype(nextthink, ast_value)) {
2917 parseerror(parser, "think-function in [frame,think] notation must be a constant");
2921 if (retval && parser->tok != ']') {
2922 parseerror(parser, "expected closing `]` for [frame,think] notation");
2926 if (retval && !parser_next(parser)) {
2930 if (retval && parser->tok != '{') {
2931 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
2936 ast_unref(nextthink);
2937 ast_unref(framenum);
2941 has_frame_think = true;
2944 block = ast_block_new(parser_ctx(parser));
2946 parseerror(parser, "failed to allocate block");
2947 if (has_frame_think) {
2948 ast_unref(nextthink);
2949 ast_unref(framenum);
2954 if (has_frame_think) {
2956 ast_expression *self_frame;
2957 ast_expression *self_nextthink;
2958 ast_expression *self_think;
2959 ast_expression *time_plus_1;
2960 ast_store *store_frame;
2961 ast_store *store_nextthink;
2962 ast_store *store_think;
2964 ctx = parser_ctx(parser);
2965 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
2966 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
2967 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
2969 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
2970 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
2972 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
2973 if (self_frame) ast_delete(self_frame);
2974 if (self_nextthink) ast_delete(self_nextthink);
2975 if (self_think) ast_delete(self_think);
2976 if (time_plus_1) ast_delete(time_plus_1);
2982 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
2983 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
2984 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
2987 ast_delete(self_frame);
2990 if (!store_nextthink) {
2991 ast_delete(self_nextthink);
2995 ast_delete(self_think);
2999 if (store_frame) ast_delete(store_frame);
3000 if (store_nextthink) ast_delete(store_nextthink);
3001 if (store_think) ast_delete(store_think);
3004 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
3005 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
3006 !ast_block_add_expr(block, (ast_expression*)store_think))
3013 parseerror(parser, "failed to generate code for [frame,think]");
3014 ast_unref(nextthink);
3015 ast_unref(framenum);
3021 parser_enterblock(parser);
3023 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
3025 ast_value *param = var->expression.params[parami];
3028 if (param->expression.vtype != TYPE_VECTOR &&
3029 (param->expression.vtype != TYPE_FIELD ||
3030 param->expression.next->expression.vtype != TYPE_VECTOR))
3035 if (!create_vector_members(param, me)) {
3036 ast_block_delete(block);
3040 for (e = 0; e < 3; ++e) {
3041 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
3042 ast_block_collect(block, (ast_expression*)me[e]);
3046 func = ast_function_new(ast_ctx(var), var->name, var);
3048 parseerror(parser, "failed to allocate function for `%s`", var->name);
3049 ast_block_delete(block);
3052 vec_push(parser->functions, func);
3054 parser->function = func;
3055 if (!parse_block_into(parser, block)) {
3056 ast_block_delete(block);
3060 vec_push(func->blocks, block);
3062 parser->function = old;
3063 if (!parser_leaveblock(parser))
3065 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
3066 parseerror(parser, "internal error: local scopes left");
3070 if (parser->tok == ';')
3071 return parser_next(parser);
3072 else if (opts.standard == COMPILER_QCC)
3073 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
3077 vec_pop(parser->functions);
3078 ast_function_delete(func);
3079 var->constval.vfunc = NULL;
3082 (void)!parser_leaveblock(parser);
3083 parser->function = old;
3087 static ast_expression *array_accessor_split(
3092 ast_expression *left,
3093 ast_expression *right
3099 lex_ctx ctx = ast_ctx(array);
3101 if (!left || !right) {
3102 if (left) ast_delete(left);
3103 if (right) ast_delete(right);
3107 cmp = ast_binary_new(ctx, INSTR_LT,
3108 (ast_expression*)index,
3109 (ast_expression*)parser_const_float(parser, middle));
3113 parseerror(parser, "internal error: failed to create comparison for array setter");
3117 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
3119 ast_delete(cmp); /* will delete left and right */
3120 parseerror(parser, "internal error: failed to create conditional jump for array setter");
3124 return (ast_expression*)ifthen;
3127 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
3129 lex_ctx ctx = ast_ctx(array);
3131 if (from+1 == afterend) {
3132 /* set this value */
3135 ast_array_index *subscript;
3137 int assignop = type_store_instr[value->expression.vtype];
3139 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3140 assignop = INSTR_STORE_V;
3142 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3146 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
3148 ast_delete(subscript);
3152 block = ast_block_new(ctx);
3158 if (!ast_block_add_expr(block, (ast_expression*)st)) {
3163 ret = ast_return_new(ctx, NULL);
3169 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
3174 return (ast_expression*)block;
3176 ast_expression *left, *right;
3177 size_t diff = afterend - from;
3178 size_t middle = from + diff/2;
3179 left = array_setter_node(parser, array, index, value, from, middle);
3180 right = array_setter_node(parser, array, index, value, middle, afterend);
3181 return array_accessor_split(parser, array, index, middle, left, right);
3185 static ast_expression *array_field_setter_node(
3194 lex_ctx ctx = ast_ctx(array);
3196 if (from+1 == afterend) {
3197 /* set this value */
3200 ast_entfield *entfield;
3201 ast_array_index *subscript;
3203 int assignop = type_storep_instr[value->expression.vtype];
3205 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3206 assignop = INSTR_STOREP_V;
3208 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3212 entfield = ast_entfield_new_force(ctx,
3213 (ast_expression*)entity,
3214 (ast_expression*)subscript,
3215 (ast_expression*)subscript);
3217 ast_delete(subscript);
3221 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
3223 ast_delete(entfield);
3227 block = ast_block_new(ctx);
3233 if (!ast_block_add_expr(block, (ast_expression*)st)) {
3238 ret = ast_return_new(ctx, NULL);
3244 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
3249 return (ast_expression*)block;
3251 ast_expression *left, *right;
3252 size_t diff = afterend - from;
3253 size_t middle = from + diff/2;
3254 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
3255 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
3256 return array_accessor_split(parser, array, index, middle, left, right);
3260 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
3262 lex_ctx ctx = ast_ctx(array);
3264 if (from+1 == afterend) {
3266 ast_array_index *subscript;
3268 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3272 ret = ast_return_new(ctx, (ast_expression*)subscript);
3274 ast_delete(subscript);
3278 return (ast_expression*)ret;
3280 ast_expression *left, *right;
3281 size_t diff = afterend - from;
3282 size_t middle = from + diff/2;
3283 left = array_getter_node(parser, array, index, from, middle);
3284 right = array_getter_node(parser, array, index, middle, afterend);
3285 return array_accessor_split(parser, array, index, middle, left, right);
3289 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
3291 ast_function *func = NULL;
3292 ast_value *fval = NULL;
3293 ast_block *body = NULL;
3295 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
3297 parseerror(parser, "failed to create accessor function value");
3301 func = ast_function_new(ast_ctx(array), funcname, fval);
3304 parseerror(parser, "failed to create accessor function node");
3308 body = ast_block_new(ast_ctx(array));
3310 parseerror(parser, "failed to create block for array accessor");
3316 vec_push(func->blocks, body);
3319 vec_push(parser->accessors, fval);
3324 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
3326 ast_expression *root = NULL;
3327 ast_value *index = NULL;
3328 ast_value *value = NULL;
3332 if (!ast_istype(array->expression.next, ast_value)) {
3333 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3337 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3339 func = fval->constval.vfunc;
3340 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
3342 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3343 value = ast_value_copy((ast_value*)array->expression.next);
3345 if (!index || !value) {
3346 parseerror(parser, "failed to create locals for array accessor");
3349 (void)!ast_value_set_name(value, "value"); /* not important */
3350 vec_push(fval->expression.params, index);
3351 vec_push(fval->expression.params, value);
3353 root = array_setter_node(parser, array, index, value, 0, array->expression.count);
3355 parseerror(parser, "failed to build accessor search tree");
3359 array->setter = fval;
3360 return ast_block_add_expr(func->blocks[0], root);
3362 if (index) ast_delete(index);
3363 if (value) ast_delete(value);
3364 if (root) ast_delete(root);
3370 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
3372 ast_expression *root = NULL;
3373 ast_value *entity = NULL;
3374 ast_value *index = NULL;
3375 ast_value *value = NULL;
3379 if (!ast_istype(array->expression.next, ast_value)) {
3380 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3384 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3386 func = fval->constval.vfunc;
3387 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
3389 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
3390 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3391 value = ast_value_copy((ast_value*)array->expression.next);
3392 if (!entity || !index || !value) {
3393 parseerror(parser, "failed to create locals for array accessor");
3396 (void)!ast_value_set_name(value, "value"); /* not important */
3397 vec_push(fval->expression.params, entity);
3398 vec_push(fval->expression.params, index);
3399 vec_push(fval->expression.params, value);
3401 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
3403 parseerror(parser, "failed to build accessor search tree");
3407 array->setter = fval;
3408 return ast_block_add_expr(func->blocks[0], root);
3410 if (entity) ast_delete(entity);
3411 if (index) ast_delete(index);
3412 if (value) ast_delete(value);
3413 if (root) ast_delete(root);
3419 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
3421 ast_expression *root = NULL;
3422 ast_value *index = NULL;
3426 /* NOTE: checking array->expression.next rather than elemtype since
3427 * for fields elemtype is a temporary fieldtype.
3429 if (!ast_istype(array->expression.next, ast_value)) {
3430 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3434 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3436 func = fval->constval.vfunc;
3437 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
3439 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3442 parseerror(parser, "failed to create locals for array accessor");
3445 vec_push(fval->expression.params, index);
3447 root = array_getter_node(parser, array, index, 0, array->expression.count);
3449 parseerror(parser, "failed to build accessor search tree");
3453 array->getter = fval;
3454 return ast_block_add_expr(func->blocks[0], root);
3456 if (index) ast_delete(index);
3457 if (root) ast_delete(root);
3463 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
3464 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
3472 bool variadic = false;
3474 ctx = parser_ctx(parser);
3476 /* for the sake of less code we parse-in in this function */
3477 if (!parser_next(parser)) {
3478 parseerror(parser, "expected parameter list");
3484 /* parse variables until we hit a closing paren */
3485 while (parser->tok != ')') {
3487 /* there must be commas between them */
3488 if (parser->tok != ',') {
3489 parseerror(parser, "expected comma or end of parameter list");
3492 if (!parser_next(parser)) {
3493 parseerror(parser, "expected parameter");
3499 if (parser->tok == TOKEN_DOTS) {
3500 /* '...' indicates a varargs function */
3502 if (!parser_next(parser)) {
3503 parseerror(parser, "expected parameter");
3506 if (parser->tok != ')') {
3507 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
3513 /* for anything else just parse a typename */
3514 param = parse_typename(parser, NULL, NULL);
3517 vec_push(params, param);
3518 if (param->expression.vtype >= TYPE_VARIANT) {
3519 char typename[1024];
3520 ast_type_to_string((ast_expression*)param, typename, sizeof(typename));
3521 parseerror(parser, "type not supported as part of a parameter list: %s", typename);
3527 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
3531 if (vec_size(params) > 8 && opts.standard == COMPILER_QCC)
3532 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
3535 if (!parser_next(parser)) {
3536 parseerror(parser, "parse error after typename");
3540 /* now turn 'var' into a function type */
3541 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
3542 fval->expression.next = (ast_expression*)var;
3543 fval->expression.variadic = variadic;
3546 var->expression.params = params;
3553 for (i = 0; i < vec_size(params); ++i)
3554 ast_delete(params[i]);
3559 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
3561 ast_expression *cexp;
3562 ast_value *cval, *tmp;
3565 ctx = parser_ctx(parser);
3567 if (!parser_next(parser)) {
3569 parseerror(parser, "expected array-size");
3573 cexp = parse_expression_leave(parser, true);
3575 if (!cexp || !ast_istype(cexp, ast_value)) {
3579 parseerror(parser, "expected array-size as constant positive integer");
3582 cval = (ast_value*)cexp;
3584 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
3585 tmp->expression.next = (ast_expression*)var;
3588 if (cval->expression.vtype == TYPE_INTEGER)
3589 tmp->expression.count = cval->constval.vint;
3590 else if (cval->expression.vtype == TYPE_FLOAT)
3591 tmp->expression.count = cval->constval.vfloat;
3595 parseerror(parser, "array-size must be a positive integer constant");
3600 if (parser->tok != ']') {
3602 parseerror(parser, "expected ']' after array-size");
3605 if (!parser_next(parser)) {
3607 parseerror(parser, "error after parsing array size");
3613 /* Parse a complete typename.
3614 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
3615 * but when parsing variables separated by comma
3616 * 'storebase' should point to where the base-type should be kept.
3617 * The base type makes up every bit of type information which comes *before* the
3620 * The following will be parsed in its entirety:
3622 * The 'basetype' in this case is 'void()'
3623 * and if there's a comma after it, say:
3625 * then the type-information 'void()' can be stored in 'storebase'
3627 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
3629 ast_value *var, *tmp;
3632 const char *name = NULL;
3633 bool isfield = false;
3634 bool wasarray = false;
3635 size_t morefields = 0;
3637 ctx = parser_ctx(parser);
3639 /* types may start with a dot */
3640 if (parser->tok == '.') {
3642 /* if we parsed a dot we need a typename now */
3643 if (!parser_next(parser)) {
3644 parseerror(parser, "expected typename for field definition");
3648 /* Further dots are handled seperately because they won't be part of the
3651 while (parser->tok == '.') {
3653 if (!parser_next(parser)) {
3654 parseerror(parser, "expected typename for field definition");
3659 if (parser->tok == TOKEN_IDENT)
3660 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
3661 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
3662 parseerror(parser, "expected typename");
3666 /* generate the basic type value */
3667 if (cached_typedef) {
3668 var = ast_value_copy(cached_typedef);
3669 ast_value_set_name(var, "<type(from_def)>");
3671 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
3673 for (; morefields; --morefields) {
3674 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
3675 tmp->expression.next = (ast_expression*)var;
3679 /* do not yet turn into a field - remember:
3680 * .void() foo; is a field too
3681 * .void()() foo; is a function
3685 if (!parser_next(parser)) {
3687 parseerror(parser, "parse error after typename");
3691 /* an opening paren now starts the parameter-list of a function
3692 * this is where original-QC has parameter lists.
3693 * We allow a single parameter list here.
3694 * Much like fteqcc we don't allow `float()() x`
3696 if (parser->tok == '(') {
3697 var = parse_parameter_list(parser, var);
3702 /* store the base if requested */
3704 *storebase = ast_value_copy(var);
3706 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3707 tmp->expression.next = (ast_expression*)*storebase;
3712 /* there may be a name now */
3713 if (parser->tok == TOKEN_IDENT) {
3714 name = util_strdup(parser_tokval(parser));
3716 if (!parser_next(parser)) {
3718 parseerror(parser, "error after variable or field declaration");
3723 /* now this may be an array */
3724 if (parser->tok == '[') {
3726 var = parse_arraysize(parser, var);
3731 /* This is the point where we can turn it into a field */
3733 /* turn it into a field if desired */
3734 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3735 tmp->expression.next = (ast_expression*)var;
3739 /* now there may be function parens again */
3740 if (parser->tok == '(' && opts.standard == COMPILER_QCC)
3741 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3742 if (parser->tok == '(' && wasarray)
3743 parseerror(parser, "arrays as part of a return type is not supported");
3744 while (parser->tok == '(') {
3745 var = parse_parameter_list(parser, var);
3754 /* finally name it */
3756 if (!ast_value_set_name(var, name)) {
3758 parseerror(parser, "internal error: failed to set name");
3761 /* free the name, ast_value_set_name duplicates */
3768 static bool parse_typedef(parser_t *parser)
3770 ast_value *typevar, *oldtype;
3771 ast_expression *old;
3773 typevar = parse_typename(parser, NULL, NULL);
3778 if ( (old = parser_find_var(parser, typevar->name)) ) {
3779 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
3780 " -> `%s` has been declared here: %s:%i",
3781 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
3782 ast_delete(typevar);
3786 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
3787 parseerror(parser, "type `%s` has already been declared here: %s:%i",
3788 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
3789 ast_delete(typevar);
3793 vec_push(parser->_typedefs, typevar);
3794 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
3796 if (parser->tok != ';') {
3797 parseerror(parser, "expected semicolon after typedef");
3800 if (!parser_next(parser)) {
3801 parseerror(parser, "parse error after typedef");
3808 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref)
3812 ast_expression *old;
3816 ast_value *basetype = NULL;
3818 bool isparam = false;
3819 bool isvector = false;
3820 bool cleanvar = true;
3821 bool wasarray = false;
3825 /* get the first complete variable */
3826 var = parse_typename(parser, &basetype, cached_typedef);
3829 ast_delete(basetype);
3837 /* Part 0: finish the type */
3838 if (parser->tok == '(') {
3839 if (opts.standard == COMPILER_QCC)
3840 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3841 var = parse_parameter_list(parser, var);
3847 /* we only allow 1-dimensional arrays */
3848 if (parser->tok == '[') {
3850 var = parse_arraysize(parser, var);
3856 if (parser->tok == '(' && wasarray) {
3857 parseerror(parser, "arrays as part of a return type is not supported");
3858 /* we'll still parse the type completely for now */
3860 /* for functions returning functions */
3861 while (parser->tok == '(') {
3862 if (opts.standard == COMPILER_QCC)
3863 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3864 var = parse_parameter_list(parser, var);
3871 var->cvq = qualifier;
3872 /* in a noref section we simply bump the usecount */
3873 if (noref || parser->noref)
3877 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
3878 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
3879 * is then filled with the previous definition and the parameter-names replaced.
3882 /* Deal with end_sys_ vars */
3884 if (!strcmp(var->name, "end_sys_globals")) {
3886 parser->crc_globals = vec_size(parser->globals);
3889 else if (!strcmp(var->name, "end_sys_fields")) {
3891 parser->crc_fields = vec_size(parser->fields);
3894 if (was_end && var->expression.vtype == TYPE_FIELD) {
3895 if (parsewarning(parser, WARN_END_SYS_FIELDS,
3896 "global '%s' hint should not be a field",
3897 parser_tokval(parser)))
3904 if (!nofields && var->expression.vtype == TYPE_FIELD)
3906 /* deal with field declarations */
3907 old = parser_find_field(parser, var->name);
3909 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
3910 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
3919 parseerror(parser, "field `%s` already declared here: %s:%i",
3920 var->name, ast_ctx(old).file, ast_ctx(old).line);
3925 if (opts.standard == COMPILER_QCC &&
3926 (old = parser_find_global(parser, var->name)))
3928 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
3929 parseerror(parser, "field `%s` already declared here: %s:%i",
3930 var->name, ast_ctx(old).file, ast_ctx(old).line);
3937 /* deal with other globals */
3938 old = parser_find_global(parser, var->name);
3939 if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
3941 /* This is a function which had a prototype */
3942 if (!ast_istype(old, ast_value)) {
3943 parseerror(parser, "internal error: prototype is not an ast_value");
3947 proto = (ast_value*)old;
3948 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
3949 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
3951 ast_ctx(proto).file, ast_ctx(proto).line);
3955 /* we need the new parameter-names */
3956 for (i = 0; i < vec_size(proto->expression.params); ++i)
3957 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
3965 if (opts.standard == COMPILER_GMQCC) {
3966 parseerror(parser, "global `%s` already declared here: %s:%i",
3967 var->name, ast_ctx(old).file, ast_ctx(old).line);
3971 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
3972 "global `%s` already declared here: %s:%i",
3973 var->name, ast_ctx(old).file, ast_ctx(old).line))
3978 proto = (ast_value*)old;
3979 if (!ast_istype(old, ast_value)) {
3980 parseerror(parser, "internal error: not an ast_value");
3989 if (opts.standard == COMPILER_QCC &&
3990 (old = parser_find_field(parser, var->name)))
3992 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
3993 parseerror(parser, "global `%s` already declared here: %s:%i",
3994 var->name, ast_ctx(old).file, ast_ctx(old).line);
4001 else /* it's not a global */
4003 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
4004 if (old && !isparam) {
4005 parseerror(parser, "local `%s` already declared here: %s:%i",
4006 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
4010 old = parser_find_local(parser, var->name, 0, &isparam);
4011 if (old && isparam) {
4012 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
4013 "local `%s` is shadowing a parameter", var->name))
4015 parseerror(parser, "local `%s` already declared here: %s:%i",
4016 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
4020 if (opts.standard != COMPILER_GMQCC) {
4029 * Create the global/local, and deal with vector types.
4032 if (var->expression.vtype == TYPE_VECTOR)
4034 else if (var->expression.vtype == TYPE_FIELD &&
4035 var->expression.next->expression.vtype == TYPE_VECTOR)
4039 if (!create_vector_members(var, me)) {
4046 /* deal with global variables, fields, functions */
4047 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
4048 var->isfield = true;
4049 vec_push(parser->fields, (ast_expression*)var);
4050 util_htset(parser->htfields, var->name, var);
4052 for (i = 0; i < 3; ++i) {
4053 vec_push(parser->fields, (ast_expression*)me[i]);
4054 util_htset(parser->htfields, me[i]->name, me[i]);
4059 vec_push(parser->globals, (ast_expression*)var);
4060 util_htset(parser->htglobals, var->name, var);
4062 for (i = 0; i < 3; ++i) {
4063 vec_push(parser->globals, (ast_expression*)me[i]);
4064 util_htset(parser->htglobals, me[i]->name, me[i]);
4069 vec_push(localblock->locals, var);
4070 parser_addlocal(parser, var->name, (ast_expression*)var);
4072 for (i = 0; i < 3; ++i) {
4073 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
4074 ast_block_collect(localblock, (ast_expression*)me[i]);
4080 me[0] = me[1] = me[2] = NULL;
4085 if (var->expression.vtype == TYPE_ARRAY) {
4087 snprintf(name, sizeof(name), "%s##SET", var->name);
4088 if (!parser_create_array_setter(parser, var, name))
4090 snprintf(name, sizeof(name), "%s##GET", var->name);
4091 if (!parser_create_array_getter(parser, var, var->expression.next, name))
4094 else if (!localblock && !nofields &&
4095 var->expression.vtype == TYPE_FIELD &&
4096 var->expression.next->expression.vtype == TYPE_ARRAY)
4099 ast_expression *telem;
4101 ast_value *array = (ast_value*)var->expression.next;
4103 if (!ast_istype(var->expression.next, ast_value)) {
4104 parseerror(parser, "internal error: field element type must be an ast_value");
4108 snprintf(name, sizeof(name), "%s##SETF", var->name);
4109 if (!parser_create_array_field_setter(parser, array, name))
4112 telem = ast_type_copy(ast_ctx(var), array->expression.next);
4113 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
4114 tfield->expression.next = telem;
4115 snprintf(name, sizeof(name), "%s##GETFP", var->name);
4116 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
4124 if (parser->tok == ';') {
4125 ast_delete(basetype);
4126 if (!parser_next(parser)) {
4127 parseerror(parser, "error after variable declaration");
4133 if (parser->tok == ',')
4137 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
4140 parseerror(parser, "missing comma or semicolon while parsing variables");
4144 if (localblock && opts.standard == COMPILER_QCC) {
4145 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
4146 "initializing expression turns variable `%s` into a constant in this standard",
4153 if (parser->tok != '{') {
4154 if (parser->tok != '=') {
4155 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
4159 if (!parser_next(parser)) {
4160 parseerror(parser, "error parsing initializer");
4164 else if (opts.standard == COMPILER_QCC) {
4165 parseerror(parser, "expected '=' before function body in this standard");
4168 if (parser->tok == '#') {
4169 ast_function *func = NULL;
4172 parseerror(parser, "cannot declare builtins within functions");
4175 if (var->expression.vtype != TYPE_FUNCTION) {
4176 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
4179 if (!parser_next(parser)) {
4180 parseerror(parser, "expected builtin number");
4183 if (parser->tok != TOKEN_INTCONST) {
4184 parseerror(parser, "builtin number must be an integer constant");
4187 if (parser_token(parser)->constval.i < 0) {
4188 parseerror(parser, "builtin number must be an integer greater than zero");
4192 if (var->hasvalue) {
4193 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
4194 "builtin `%s` has already been defined\n"
4195 " -> previous declaration here: %s:%i",
4196 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
4200 func = ast_function_new(ast_ctx(var), var->name, var);
4202 parseerror(parser, "failed to allocate function for `%s`", var->name);
4205 vec_push(parser->functions, func);
4207 func->builtin = -parser_token(parser)->constval.i-1;
4210 if (!parser_next(parser)) {
4211 parseerror(parser, "expected comma or semicolon");
4213 ast_function_delete(func);
4214 var->constval.vfunc = NULL;
4218 else if (parser->tok == '{' || parser->tok == '[')
4222 parseerror(parser, "cannot declare functions within functions");
4227 ast_ctx(proto) = parser_ctx(parser);
4229 if (!parse_function_body(parser, var))
4231 ast_delete(basetype);
4232 for (i = 0; i < vec_size(parser->gotos); ++i)
4233 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
4234 vec_free(parser->gotos);
4235 vec_free(parser->labels);
4238 ast_expression *cexp;
4241 cexp = parse_expression_leave(parser, true);
4246 cval = (ast_value*)cexp;
4247 if (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
4248 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
4251 if (opts.standard != COMPILER_GMQCC &&
4252 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
4253 qualifier != CV_VAR)
4255 var->cvq = CV_CONST;
4257 var->hasvalue = true;
4258 if (cval->expression.vtype == TYPE_STRING)
4259 var->constval.vstring = parser_strdup(cval->constval.vstring);
4260 else if (cval->expression.vtype == TYPE_FIELD)
4261 var->constval.vfield = cval;
4263 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
4268 shunt sy = { NULL, NULL };
4271 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
4272 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
4273 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
4274 if (!parser_sy_apply_operator(parser, &sy))
4277 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
4278 parseerror(parser, "internal error: leaked operands");
4279 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
4289 if (parser->tok == ',') {
4290 if (!parser_next(parser)) {
4291 parseerror(parser, "expected another variable");
4295 if (parser->tok != TOKEN_IDENT) {
4296 parseerror(parser, "expected another variable");
4299 var = ast_value_copy(basetype);
4301 ast_value_set_name(var, parser_tokval(parser));
4302 if (!parser_next(parser)) {
4303 parseerror(parser, "error parsing variable declaration");
4309 if (parser->tok != ';') {
4310 parseerror(parser, "missing semicolon after variables");
4314 if (!parser_next(parser)) {
4315 parseerror(parser, "parse error after variable declaration");
4319 ast_delete(basetype);
4323 if (cleanvar && var)
4325 ast_delete(basetype);
4329 ast_delete(basetype);
4330 if (cleanvar && var)
4332 if (me[0]) ast_member_delete(me[0]);
4333 if (me[1]) ast_member_delete(me[1]);
4334 if (me[2]) ast_member_delete(me[2]);
4338 static bool parser_global_statement(parser_t *parser)
4342 ast_value *istype = NULL;
4344 if (parser->tok == TOKEN_IDENT)
4345 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
4347 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
4349 return parse_variable(parser, NULL, false, CV_NONE, istype, false);
4351 else if (parse_var_qualifiers(parser, false, &cvq, &noref))
4353 if (cvq == CV_WRONG)
4355 return parse_variable(parser, NULL, true, cvq, NULL, noref);
4357 else if (parser->tok == TOKEN_KEYWORD)
4359 if (!strcmp(parser_tokval(parser), "typedef")) {
4360 if (!parser_next(parser)) {
4361 parseerror(parser, "expected type definition after 'typedef'");
4364 return parse_typedef(parser);
4366 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
4369 else if (parser->tok == '#')
4371 return parse_pragma(parser);
4373 else if (parser->tok == '$')
4375 if (!parser_next(parser)) {
4376 parseerror(parser, "parse error");
4382 parseerror(parser, "unexpected token: %s", parser->lex->tok.value);
4388 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
4390 return util_crc16(old, str, strlen(str));
4393 static void progdefs_crc_file(const char *str)
4395 /* write to progdefs.h here */
4399 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
4401 old = progdefs_crc_sum(old, str);
4402 progdefs_crc_file(str);
4406 static void generate_checksum(parser_t *parser)
4408 uint16_t crc = 0xFFFF;
4412 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
4413 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
4415 progdefs_crc_file("\tint\tpad;\n");
4416 progdefs_crc_file("\tint\tofs_return[3];\n");
4417 progdefs_crc_file("\tint\tofs_parm0[3];\n");
4418 progdefs_crc_file("\tint\tofs_parm1[3];\n");
4419 progdefs_crc_file("\tint\tofs_parm2[3];\n");
4420 progdefs_crc_file("\tint\tofs_parm3[3];\n");
4421 progdefs_crc_file("\tint\tofs_parm4[3];\n");
4422 progdefs_crc_file("\tint\tofs_parm5[3];\n");
4423 progdefs_crc_file("\tint\tofs_parm6[3];\n");
4424 progdefs_crc_file("\tint\tofs_parm7[3];\n");
4426 for (i = 0; i < parser->crc_globals; ++i) {
4427 if (!ast_istype(parser->globals[i], ast_value))
4429 value = (ast_value*)(parser->globals[i]);
4430 switch (value->expression.vtype) {
4431 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
4432 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
4433 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
4434 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
4436 crc = progdefs_crc_both(crc, "\tint\t");
4439 crc = progdefs_crc_both(crc, value->name);
4440 crc = progdefs_crc_both(crc, ";\n");
4442 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
4443 for (i = 0; i < parser->crc_fields; ++i) {
4444 if (!ast_istype(parser->fields[i], ast_value))
4446 value = (ast_value*)(parser->fields[i]);
4447 switch (value->expression.next->expression.vtype) {
4448 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
4449 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
4450 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
4451 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
4453 crc = progdefs_crc_both(crc, "\tint\t");
4456 crc = progdefs_crc_both(crc, value->name);
4457 crc = progdefs_crc_both(crc, ";\n");
4459 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
4464 static parser_t *parser;
4470 parser = (parser_t*)mem_a(sizeof(parser_t));
4474 memset(parser, 0, sizeof(*parser));
4476 for (i = 0; i < operator_count; ++i) {
4477 if (operators[i].id == opid1('=')) {
4478 parser->assign_op = operators+i;
4482 if (!parser->assign_op) {
4483 printf("internal error: initializing parser: failed to find assign operator\n");
4488 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
4489 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
4490 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
4491 vec_push(parser->_blocktypedefs, 0);
4495 bool parser_compile()
4497 /* initial lexer/parser state */
4498 parser->lex->flags.noops = true;
4500 if (parser_next(parser))
4502 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
4504 if (!parser_global_statement(parser)) {
4505 if (parser->tok == TOKEN_EOF)
4506 parseerror(parser, "unexpected eof");
4507 else if (!parser->errors)
4508 parseerror(parser, "there have been errors, bailing out");
4509 lex_close(parser->lex);
4515 parseerror(parser, "parse error");
4516 lex_close(parser->lex);
4521 lex_close(parser->lex);
4524 return !parser->errors;
4527 bool parser_compile_file(const char *filename)
4529 parser->lex = lex_open(filename);
4531 con_err("failed to open file \"%s\"\n", filename);
4534 return parser_compile();
4537 bool parser_compile_string_len(const char *name, const char *str, size_t len)
4539 parser->lex = lex_open_string(str, len, name);
4541 con_err("failed to create lexer for string \"%s\"\n", name);
4544 return parser_compile();
4547 bool parser_compile_string(const char *name, const char *str)
4549 parser->lex = lex_open_string(str, strlen(str), name);
4551 con_err("failed to create lexer for string \"%s\"\n", name);
4554 return parser_compile();
4557 void parser_cleanup()
4560 for (i = 0; i < vec_size(parser->accessors); ++i) {
4561 ast_delete(parser->accessors[i]->constval.vfunc);
4562 parser->accessors[i]->constval.vfunc = NULL;
4563 ast_delete(parser->accessors[i]);
4565 for (i = 0; i < vec_size(parser->functions); ++i) {
4566 ast_delete(parser->functions[i]);
4568 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
4569 ast_delete(parser->imm_vector[i]);
4571 for (i = 0; i < vec_size(parser->imm_string); ++i) {
4572 ast_delete(parser->imm_string[i]);
4574 for (i = 0; i < vec_size(parser->imm_float); ++i) {
4575 ast_delete(parser->imm_float[i]);
4577 for (i = 0; i < vec_size(parser->fields); ++i) {
4578 ast_delete(parser->fields[i]);
4580 for (i = 0; i < vec_size(parser->globals); ++i) {
4581 ast_delete(parser->globals[i]);
4583 vec_free(parser->accessors);
4584 vec_free(parser->functions);
4585 vec_free(parser->imm_vector);
4586 vec_free(parser->imm_string);
4587 vec_free(parser->imm_float);
4588 vec_free(parser->globals);
4589 vec_free(parser->fields);
4591 for (i = 0; i < vec_size(parser->variables); ++i)
4592 util_htdel(parser->variables[i]);
4593 vec_free(parser->variables);
4594 vec_free(parser->_blocklocals);
4595 vec_free(parser->_locals);
4597 for (i = 0; i < vec_size(parser->_typedefs); ++i)
4598 ast_delete(parser->_typedefs[i]);
4599 vec_free(parser->_typedefs);
4600 for (i = 0; i < vec_size(parser->typedefs); ++i)
4601 util_htdel(parser->typedefs[i]);
4602 vec_free(parser->typedefs);
4603 vec_free(parser->_blocktypedefs);
4605 vec_free(parser->_block_ctx);
4607 vec_free(parser->labels);
4608 vec_free(parser->gotos);
4613 bool parser_finish(const char *output)
4619 if (!parser->errors)
4621 ir = ir_builder_new("gmqcc_out");
4623 con_out("failed to allocate builder\n");
4627 for (i = 0; i < vec_size(parser->fields); ++i) {
4630 if (!ast_istype(parser->fields[i], ast_value))
4632 field = (ast_value*)parser->fields[i];
4633 hasvalue = field->hasvalue;
4634 field->hasvalue = false;
4635 if (!ast_global_codegen((ast_value*)field, ir, true)) {
4636 con_out("failed to generate field %s\n", field->name);
4637 ir_builder_delete(ir);
4642 ast_expression *subtype;
4643 field->hasvalue = true;
4644 subtype = field->expression.next;
4645 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
4646 if (subtype->expression.vtype == TYPE_FIELD)
4647 ifld->fieldtype = subtype->expression.next->expression.vtype;
4648 else if (subtype->expression.vtype == TYPE_FUNCTION)
4649 ifld->outtype = subtype->expression.next->expression.vtype;
4650 (void)!ir_value_set_field(field->ir_v, ifld);
4653 for (i = 0; i < vec_size(parser->globals); ++i) {
4655 if (!ast_istype(parser->globals[i], ast_value))
4657 asvalue = (ast_value*)(parser->globals[i]);
4658 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
4659 retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
4660 "unused global: `%s`", asvalue->name);
4662 if (!ast_global_codegen(asvalue, ir, false)) {
4663 con_out("failed to generate global %s\n", asvalue->name);
4664 ir_builder_delete(ir);
4668 for (i = 0; i < vec_size(parser->imm_float); ++i) {
4669 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
4670 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
4671 ir_builder_delete(ir);
4675 for (i = 0; i < vec_size(parser->imm_string); ++i) {
4676 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
4677 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
4678 ir_builder_delete(ir);
4682 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
4683 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
4684 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
4685 ir_builder_delete(ir);
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 (!ast_generate_accessors(asvalue, ir)) {
4695 ir_builder_delete(ir);
4699 for (i = 0; i < vec_size(parser->fields); ++i) {
4701 asvalue = (ast_value*)(parser->fields[i]->expression.next);
4703 if (!ast_istype((ast_expression*)asvalue, ast_value))
4705 if (asvalue->expression.vtype != TYPE_ARRAY)
4707 if (!ast_generate_accessors(asvalue, ir)) {
4708 ir_builder_delete(ir);
4712 for (i = 0; i < vec_size(parser->functions); ++i) {
4713 if (!ast_function_codegen(parser->functions[i], ir)) {
4714 con_out("failed to generate function %s\n", parser->functions[i]->name);
4715 ir_builder_delete(ir);
4720 ir_builder_dump(ir, con_out);
4721 for (i = 0; i < vec_size(parser->functions); ++i) {
4722 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
4723 con_out("failed to finalize function %s\n", parser->functions[i]->name);
4724 ir_builder_delete(ir);
4731 ir_builder_dump(ir, con_out);
4733 generate_checksum(parser);
4735 if (!ir_builder_generate(ir, output)) {
4736 con_out("*** failed to generate output file\n");
4737 ir_builder_delete(ir);
4742 ir_builder_delete(ir);
4746 con_out("*** there were compile errors\n");