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6 * this software and associated documentation files (the "Software"), to deal in
7 * the Software without restriction, including without limitation the rights to
8 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
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12 * The above copyright notice and this permission notice shall be included in all
13 * copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
29 /* beginning of locals */
30 #define PARSER_HT_LOCALS 2
32 #define PARSER_HT_SIZE 1024
33 #define TYPEDEF_HT_SIZE 16
35 enum parser_pot { POT_PAREN, POT_TERNARY1, POT_TERNARY2 };
40 ast_expression **globals;
41 ast_expression **fields;
42 ast_function **functions;
43 ast_value **imm_float;
44 ast_value **imm_string;
45 ast_value **imm_vector;
48 /* must be deleted first, they reference immediates and values */
49 ast_value **accessors;
51 ast_value *imm_float_zero;
52 ast_value *imm_float_one;
53 ast_value *imm_vector_zero;
59 ast_function *function;
61 /* All the labels the function defined...
62 * Should they be in ast_function instead?
67 const char **continues;
69 /* A list of hashtables for each scope */
75 /* not to be used directly, we use the hash table */
76 ast_expression **_locals;
78 ast_value **_typedefs;
79 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.
101 static const ast_expression *intrinsic_debug_typestring = (ast_expression*)0x10;
103 static void parser_enterblock(parser_t *parser);
104 static bool parser_leaveblock(parser_t *parser);
105 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e);
106 static bool parse_typedef(parser_t *parser);
107 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref, bool is_static, uint32_t qflags);
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, ...)
119 vcompile_error(parser->lex->tok.ctx, fmt, ap);
123 /* returns true if it counts as an error */
124 static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
129 r = vcompile_warning(parser->lex->tok.ctx, warntype, fmt, ap);
134 static bool GMQCC_WARN genwarning(lex_ctx ctx, int warntype, const char *fmt, ...)
139 r = vcompile_warning(ctx, warntype, fmt, ap);
144 /**********************************************************************
145 * some maths used for constant folding
148 vector vec3_add(vector a, vector b)
157 vector vec3_sub(vector a, vector b)
166 qcfloat vec3_mulvv(vector a, vector b)
168 return (a.x * b.x + a.y * b.y + a.z * b.z);
171 vector vec3_mulvf(vector a, float b)
180 /**********************************************************************
184 bool parser_next(parser_t *parser)
186 /* lex_do kills the previous token */
187 parser->tok = lex_do(parser->lex);
188 if (parser->tok == TOKEN_EOF)
190 if (parser->tok >= TOKEN_ERROR) {
191 parseerror(parser, "lex error");
197 #define parser_tokval(p) ((p)->lex->tok.value)
198 #define parser_token(p) (&((p)->lex->tok))
199 #define parser_ctx(p) ((p)->lex->tok.ctx)
201 static ast_value* parser_const_float(parser_t *parser, double d)
205 for (i = 0; i < vec_size(parser->imm_float); ++i) {
206 const double compare = parser->imm_float[i]->constval.vfloat;
207 if (memcmp((const void*)&compare, (const void *)&d, sizeof(double)) == 0)
208 return parser->imm_float[i];
210 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_FLOAT);
212 out->hasvalue = true;
213 out->constval.vfloat = d;
214 vec_push(parser->imm_float, out);
218 static ast_value* parser_const_float_0(parser_t *parser)
220 if (!parser->imm_float_zero)
221 parser->imm_float_zero = parser_const_float(parser, 0);
222 return parser->imm_float_zero;
225 static ast_value* parser_const_float_1(parser_t *parser)
227 if (!parser->imm_float_one)
228 parser->imm_float_one = parser_const_float(parser, 1);
229 return parser->imm_float_one;
232 static char *parser_strdup(const char *str)
235 /* actually dup empty strings */
236 char *out = (char*)mem_a(1);
240 return util_strdup(str);
243 static ast_value* parser_const_string(parser_t *parser, const char *str, bool dotranslate)
247 for (i = 0; i < vec_size(parser->imm_string); ++i) {
248 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
249 return parser->imm_string[i];
253 snprintf(name, sizeof(name), "dotranslate_%lu", (unsigned long)(parser->translated++));
254 out = ast_value_new(parser_ctx(parser), name, TYPE_STRING);
256 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
258 out->hasvalue = true;
259 out->constval.vstring = parser_strdup(str);
260 vec_push(parser->imm_string, out);
264 static ast_value* parser_const_vector(parser_t *parser, vector v)
268 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
269 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
270 return parser->imm_vector[i];
272 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
274 out->hasvalue = true;
275 out->constval.vvec = v;
276 vec_push(parser->imm_vector, out);
280 static ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
286 return parser_const_vector(parser, v);
289 static ast_value* parser_const_vector_0(parser_t *parser)
291 if (!parser->imm_vector_zero)
292 parser->imm_vector_zero = parser_const_vector_f(parser, 0, 0, 0);
293 return parser->imm_vector_zero;
296 static ast_expression* parser_find_field(parser_t *parser, const char *name)
298 return ( ast_expression*)util_htget(parser->htfields, name);
301 static ast_expression* parser_find_global(parser_t *parser, const char *name)
303 return (ast_expression*)util_htget(parser->htglobals, name);
306 static ast_expression* parser_find_param(parser_t *parser, const char *name)
310 if (!parser->function)
312 fun = parser->function->vtype;
313 for (i = 0; i < vec_size(fun->expression.params); ++i) {
314 if (!strcmp(fun->expression.params[i]->name, name))
315 return (ast_expression*)(fun->expression.params[i]);
320 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
325 hash = util_hthash(parser->htglobals, name);
328 for (i = vec_size(parser->variables); i > upto;) {
330 if ( (e = (ast_expression*)util_htgeth(parser->variables[i], name, hash)) )
334 return parser_find_param(parser, name);
337 static ast_expression* parser_find_var(parser_t *parser, const char *name)
341 v = parser_find_local(parser, name, 0, &dummy);
342 if (!v) v = parser_find_global(parser, name);
346 static ast_value* parser_find_typedef(parser_t *parser, const char *name, size_t upto)
350 hash = util_hthash(parser->typedefs[0], name);
352 for (i = vec_size(parser->typedefs); i > upto;) {
354 if ( (e = (ast_value*)util_htgeth(parser->typedefs[i], name, hash)) )
362 size_t etype; /* 0 = expression, others are operators */
366 ast_block *block; /* for commas and function calls */
375 #define SY_PAREN_EXPR '('
376 #define SY_PAREN_FUNC 'f'
377 #define SY_PAREN_INDEX '['
378 #define SY_PAREN_TERNARY '?'
380 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
391 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
395 e.out = (ast_expression*)v;
402 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
404 e.etype = 1 + (op - operators);
413 static sy_elem syparen(lex_ctx ctx, int p, size_t off) {
425 # define DEBUGSHUNTDO(x) x
427 # define DEBUGSHUNTDO(x)
430 /* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
431 * so we need to rotate it to become ent.(foo[n]).
433 static bool rotate_entfield_array_index_nodes(ast_expression **out)
435 ast_array_index *index;
436 ast_entfield *entfield;
440 ast_expression *entity;
442 lex_ctx ctx = ast_ctx(*out);
444 if (!ast_istype(*out, ast_array_index))
446 index = (ast_array_index*)*out;
448 if (!ast_istype(index->array, ast_entfield))
450 entfield = (ast_entfield*)index->array;
452 if (!ast_istype(entfield->field, ast_value))
454 field = (ast_value*)entfield->field;
457 entity = entfield->entity;
461 index = ast_array_index_new(ctx, (ast_expression*)field, sub);
462 entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
463 *out = (ast_expression*)entfield;
468 static bool immediate_is_true(lex_ctx ctx, ast_value *v)
470 switch (v->expression.vtype) {
472 return !!v->constval.vfloat;
474 return !!v->constval.vint;
476 if (OPTS_FLAG(CORRECT_LOGIC))
477 return v->constval.vvec.x &&
478 v->constval.vvec.y &&
481 return !!(v->constval.vvec.x);
483 if (!v->constval.vstring)
485 if (v->constval.vstring && OPTS_FLAG(TRUE_EMPTY_STRINGS))
487 return !!v->constval.vstring[0];
489 compile_error(ctx, "internal error: immediate_is_true on invalid type");
490 return !!v->constval.vfunc;
494 static bool parser_sy_apply_operator(parser_t *parser, shunt *sy)
498 ast_expression *out = NULL;
499 ast_expression *exprs[3];
500 ast_block *blocks[3];
501 ast_value *asvalue[3];
502 ast_binstore *asbinstore;
503 size_t i, assignop, addop, subop;
504 qcint generated_op = 0;
509 if (!vec_size(sy->ops)) {
510 parseerror(parser, "internal error: missing operator");
514 if (vec_last(sy->ops).paren) {
515 parseerror(parser, "unmatched parenthesis");
519 op = &operators[vec_last(sy->ops).etype - 1];
520 ctx = vec_last(sy->ops).ctx;
522 DEBUGSHUNTDO(con_out("apply %s\n", op->op));
524 if (vec_size(sy->out) < op->operands) {
525 parseerror(parser, "internal error: not enough operands: %i (operator %s (%i))", vec_size(sy->out),
526 op->op, (int)op->id);
530 vec_shrinkby(sy->ops, 1);
532 /* op(:?) has no input and no output */
536 vec_shrinkby(sy->out, op->operands);
537 for (i = 0; i < op->operands; ++i) {
538 exprs[i] = sy->out[vec_size(sy->out)+i].out;
539 blocks[i] = sy->out[vec_size(sy->out)+i].block;
540 asvalue[i] = (ast_value*)exprs[i];
543 if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
544 parseerror(parser, "internal error: operator cannot be applied on empty blocks");
548 #define NotSameType(T) \
549 (exprs[0]->expression.vtype != exprs[1]->expression.vtype || \
550 exprs[0]->expression.vtype != T)
551 #define CanConstFold1(A) \
552 (ast_istype((A), ast_value) && ((ast_value*)(A))->hasvalue && (((ast_value*)(A))->cvq == CV_CONST) &&\
553 (A)->expression.vtype != TYPE_FUNCTION)
554 #define CanConstFold(A, B) \
555 (CanConstFold1(A) && CanConstFold1(B))
556 #define ConstV(i) (asvalue[(i)]->constval.vvec)
557 #define ConstF(i) (asvalue[(i)]->constval.vfloat)
558 #define ConstS(i) (asvalue[(i)]->constval.vstring)
562 parseerror(parser, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
566 if (exprs[0]->expression.vtype == TYPE_ENTITY) {
567 if (exprs[1]->expression.vtype != TYPE_FIELD) {
568 parseerror(parser, "type error: right hand of member-operand should be an entity-field");
571 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
573 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
574 parseerror(parser, "internal error: vector access is not supposed to be handled at this point");
578 parseerror(parser, "type error: member-of operator on something that is not an entity or vector");
584 if (exprs[0]->expression.vtype != TYPE_ARRAY &&
585 !(exprs[0]->expression.vtype == TYPE_FIELD &&
586 exprs[0]->expression.next->expression.vtype == TYPE_ARRAY))
588 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
589 parseerror(parser, "cannot index value of type %s", ty1);
592 if (exprs[1]->expression.vtype != TYPE_FLOAT) {
593 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
594 parseerror(parser, "index must be of type float, not %s", ty1);
597 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
598 if (rotate_entfield_array_index_nodes(&out))
601 /* This is not broken in fteqcc anymore */
602 if (opts.standard != COMPILER_GMQCC) {
603 /* this error doesn't need to make us bail out */
604 (void)!parsewarning(parser, WARN_EXTENSIONS,
605 "accessing array-field members of an entity without parenthesis\n"
606 " -> this is an extension from -std=gmqcc");
614 if (!ast_block_add_expr(blocks[0], exprs[1]))
617 blocks[0] = ast_block_new(ctx);
618 if (!ast_block_add_expr(blocks[0], exprs[0]) ||
619 !ast_block_add_expr(blocks[0], exprs[1]))
624 if (!ast_block_set_type(blocks[0], exprs[1]))
627 vec_push(sy->out, syblock(ctx, blocks[0]));
634 switch (exprs[0]->expression.vtype) {
636 if (CanConstFold1(exprs[0]))
637 out = (ast_expression*)parser_const_float(parser, -ConstF(0));
639 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
640 (ast_expression*)parser_const_float_0(parser),
644 if (CanConstFold1(exprs[0]))
645 out = (ast_expression*)parser_const_vector_f(parser,
646 -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
648 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
649 (ast_expression*)parser_const_vector_0(parser),
653 parseerror(parser, "invalid types used in expression: cannot negate type %s",
654 type_name[exprs[0]->expression.vtype]);
660 switch (exprs[0]->expression.vtype) {
662 if (CanConstFold1(exprs[0]))
663 out = (ast_expression*)parser_const_float(parser, !ConstF(0));
665 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
668 if (CanConstFold1(exprs[0]))
669 out = (ast_expression*)parser_const_float(parser,
670 (!ConstV(0).x && !ConstV(0).y && !ConstV(0).z));
672 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
675 if (CanConstFold1(exprs[0])) {
676 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
677 out = (ast_expression*)parser_const_float(parser, !ConstS(0));
679 out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
681 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
682 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
684 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
687 /* we don't constant-fold NOT for these types */
689 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
692 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
695 parseerror(parser, "invalid types used in expression: cannot logically negate type %s",
696 type_name[exprs[0]->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 add type %s and %s",
706 type_name[exprs[0]->expression.vtype],
707 type_name[exprs[1]->expression.vtype]);
710 switch (exprs[0]->expression.vtype) {
712 if (CanConstFold(exprs[0], exprs[1]))
714 out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
717 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
720 if (CanConstFold(exprs[0], exprs[1]))
721 out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
723 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
726 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
727 type_name[exprs[0]->expression.vtype],
728 type_name[exprs[1]->expression.vtype]);
733 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
734 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
736 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
737 type_name[exprs[1]->expression.vtype],
738 type_name[exprs[0]->expression.vtype]);
741 switch (exprs[0]->expression.vtype) {
743 if (CanConstFold(exprs[0], exprs[1]))
744 out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
746 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
749 if (CanConstFold(exprs[0], exprs[1]))
750 out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
752 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
755 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
756 type_name[exprs[1]->expression.vtype],
757 type_name[exprs[0]->expression.vtype]);
762 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
763 !(exprs[0]->expression.vtype == TYPE_VECTOR &&
764 exprs[1]->expression.vtype == TYPE_FLOAT) &&
765 !(exprs[1]->expression.vtype == TYPE_VECTOR &&
766 exprs[0]->expression.vtype == TYPE_FLOAT)
769 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
770 type_name[exprs[1]->expression.vtype],
771 type_name[exprs[0]->expression.vtype]);
774 switch (exprs[0]->expression.vtype) {
776 if (exprs[1]->expression.vtype == TYPE_VECTOR)
778 if (CanConstFold(exprs[0], exprs[1]))
779 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
781 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
785 if (CanConstFold(exprs[0], exprs[1]))
786 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
788 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
792 if (exprs[1]->expression.vtype == TYPE_FLOAT)
794 if (CanConstFold(exprs[0], exprs[1]))
795 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
797 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
801 if (CanConstFold(exprs[0], exprs[1]))
802 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
804 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
808 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
809 type_name[exprs[1]->expression.vtype],
810 type_name[exprs[0]->expression.vtype]);
815 if (NotSameType(TYPE_FLOAT)) {
816 parseerror(parser, "invalid types used in expression: cannot divide types %s and %s",
817 type_name[exprs[0]->expression.vtype],
818 type_name[exprs[1]->expression.vtype]);
821 if (CanConstFold(exprs[0], exprs[1]))
822 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
824 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
828 parseerror(parser, "qc does not have a modulo operator");
832 if (NotSameType(TYPE_FLOAT)) {
833 parseerror(parser, "invalid types used in expression: cannot perform bit operations between types %s and %s",
834 type_name[exprs[0]->expression.vtype],
835 type_name[exprs[1]->expression.vtype]);
838 if (CanConstFold(exprs[0], exprs[1]))
839 out = (ast_expression*)parser_const_float(parser,
840 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
841 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
843 out = (ast_expression*)ast_binary_new(ctx,
844 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
848 parseerror(parser, "TODO: bitxor");
853 case opid3('<','<','='):
854 case opid3('>','>','='):
855 parseerror(parser, "TODO: shifts");
859 generated_op += 1; /* INSTR_OR */
861 generated_op += INSTR_AND;
863 if (NotSameType(TYPE_FLOAT)) {
864 parseerror(parser, "invalid types used in expression: cannot perform logical operations between types %s and %s",
865 type_name[exprs[0]->expression.vtype],
866 type_name[exprs[1]->expression.vtype]);
867 parseerror(parser, "TODO: logical ops for arbitrary types using INSTR_NOT");
868 parseerror(parser, "TODO: optional early out");
872 if (CanConstFold(exprs[0], exprs[1]))
874 if (OPTS_FLAG(PERL_LOGIC)) {
875 if (immediate_is_true(ctx, asvalue[0]))
879 out = (ast_expression*)parser_const_float(parser,
880 ( (generated_op == INSTR_OR)
881 ? (immediate_is_true(ctx, asvalue[0]) || immediate_is_true(ctx, asvalue[1]))
882 : (immediate_is_true(ctx, asvalue[0]) && immediate_is_true(ctx, asvalue[1])) )
887 if (OPTS_FLAG(PERL_LOGIC) && !ast_compare_type(exprs[0], exprs[1])) {
888 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
889 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
890 parseerror(parser, "invalid types for logical operation with -fperl-logic: %s and %s", ty1, ty2);
893 for (i = 0; i < 2; ++i) {
894 if (OPTS_FLAG(CORRECT_LOGIC) && exprs[i]->expression.vtype == TYPE_VECTOR) {
895 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[i]);
897 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
899 exprs[i] = out; out = NULL;
900 if (OPTS_FLAG(PERL_LOGIC)) {
901 /* here we want to keep the right expressions' type */
905 else if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && exprs[i]->expression.vtype == TYPE_STRING) {
906 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[i]);
908 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
910 exprs[i] = out; out = NULL;
911 if (OPTS_FLAG(PERL_LOGIC)) {
912 /* here we want to keep the right expressions' type */
917 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
922 if (vec_last(parser->pot) != POT_TERNARY2) {
923 parseerror(parser, "mismatched parenthesis/ternary");
926 vec_pop(parser->pot);
927 if (exprs[1]->expression.vtype != exprs[2]->expression.vtype) {
928 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
929 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
930 parseerror(parser, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
933 if (CanConstFold1(exprs[0]))
934 out = (ConstF(0) ? exprs[1] : exprs[2]);
936 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
940 generated_op += 1; /* INSTR_GT */
942 generated_op += 1; /* INSTR_LT */
943 case opid2('>', '='):
944 generated_op += 1; /* INSTR_GE */
945 case opid2('<', '='):
946 generated_op += INSTR_LE;
947 if (NotSameType(TYPE_FLOAT)) {
948 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
949 type_name[exprs[0]->expression.vtype],
950 type_name[exprs[1]->expression.vtype]);
953 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
955 case opid2('!', '='):
956 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
957 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
958 type_name[exprs[0]->expression.vtype],
959 type_name[exprs[1]->expression.vtype]);
962 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
964 case opid2('=', '='):
965 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
966 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
967 type_name[exprs[0]->expression.vtype],
968 type_name[exprs[1]->expression.vtype]);
971 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
975 if (ast_istype(exprs[0], ast_entfield)) {
976 ast_expression *field = ((ast_entfield*)exprs[0])->field;
977 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
978 exprs[0]->expression.vtype == TYPE_FIELD &&
979 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
981 assignop = type_storep_instr[TYPE_VECTOR];
984 assignop = type_storep_instr[exprs[0]->expression.vtype];
985 if (assignop == AINSTR_END ||
986 !ast_compare_type(field->expression.next, exprs[1]))
988 ast_type_to_string(field->expression.next, ty1, sizeof(ty1));
989 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
990 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
991 field->expression.next->expression.vtype == TYPE_FUNCTION &&
992 exprs[1]->expression.vtype == TYPE_FUNCTION)
994 (void)!parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
995 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
998 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1003 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1004 exprs[0]->expression.vtype == TYPE_FIELD &&
1005 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
1007 assignop = type_store_instr[TYPE_VECTOR];
1010 assignop = type_store_instr[exprs[0]->expression.vtype];
1013 if (assignop == AINSTR_END) {
1014 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1015 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1016 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1018 else if (exprs[1]->expression.vtype != TYPE_NIL &&
1019 !ast_compare_type(exprs[0], exprs[1]))
1021 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1022 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1023 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1024 exprs[0]->expression.vtype == TYPE_FUNCTION &&
1025 exprs[1]->expression.vtype == TYPE_FUNCTION)
1027 (void)!parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
1028 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1031 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1034 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1035 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1037 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
1039 case opid3('+','+','P'):
1040 case opid3('-','-','P'):
1042 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1043 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1044 parseerror(parser, "invalid type for prefix increment: %s", ty1);
1047 if (op->id == opid3('+','+','P'))
1048 addop = INSTR_ADD_F;
1050 addop = INSTR_SUB_F;
1051 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1052 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1054 if (ast_istype(exprs[0], ast_entfield)) {
1055 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1057 (ast_expression*)parser_const_float_1(parser));
1059 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1061 (ast_expression*)parser_const_float_1(parser));
1064 case opid3('S','+','+'):
1065 case opid3('S','-','-'):
1067 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1068 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1069 parseerror(parser, "invalid type for suffix increment: %s", ty1);
1072 if (op->id == opid3('S','+','+')) {
1073 addop = INSTR_ADD_F;
1074 subop = INSTR_SUB_F;
1076 addop = INSTR_SUB_F;
1077 subop = INSTR_ADD_F;
1079 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1080 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1082 if (ast_istype(exprs[0], ast_entfield)) {
1083 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1085 (ast_expression*)parser_const_float_1(parser));
1087 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1089 (ast_expression*)parser_const_float_1(parser));
1093 out = (ast_expression*)ast_binary_new(ctx, subop,
1095 (ast_expression*)parser_const_float_1(parser));
1097 case opid2('+','='):
1098 case opid2('-','='):
1099 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
1100 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
1102 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1103 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1104 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1108 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1109 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1111 if (ast_istype(exprs[0], ast_entfield))
1112 assignop = type_storep_instr[exprs[0]->expression.vtype];
1114 assignop = type_store_instr[exprs[0]->expression.vtype];
1115 switch (exprs[0]->expression.vtype) {
1117 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1118 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
1119 exprs[0], exprs[1]);
1122 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1123 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1124 exprs[0], exprs[1]);
1127 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1128 type_name[exprs[0]->expression.vtype],
1129 type_name[exprs[1]->expression.vtype]);
1133 case opid2('*','='):
1134 case opid2('/','='):
1135 if (exprs[1]->expression.vtype != TYPE_FLOAT ||
1136 !(exprs[0]->expression.vtype == TYPE_FLOAT ||
1137 exprs[0]->expression.vtype == TYPE_VECTOR))
1139 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1140 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1141 parseerror(parser, "invalid types used in expression: %s and %s",
1145 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1146 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1148 if (ast_istype(exprs[0], ast_entfield))
1149 assignop = type_storep_instr[exprs[0]->expression.vtype];
1151 assignop = type_store_instr[exprs[0]->expression.vtype];
1152 switch (exprs[0]->expression.vtype) {
1154 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1155 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1156 exprs[0], exprs[1]);
1159 if (op->id == opid2('*','=')) {
1160 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1161 exprs[0], exprs[1]);
1163 /* there's no DIV_VF */
1164 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
1165 (ast_expression*)parser_const_float_1(parser),
1169 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1174 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1175 type_name[exprs[0]->expression.vtype],
1176 type_name[exprs[1]->expression.vtype]);
1180 case opid2('&','='):
1181 case opid2('|','='):
1182 if (NotSameType(TYPE_FLOAT)) {
1183 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1184 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1185 parseerror(parser, "invalid types used in expression: %s and %s",
1189 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1190 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1192 if (ast_istype(exprs[0], ast_entfield))
1193 assignop = type_storep_instr[exprs[0]->expression.vtype];
1195 assignop = type_store_instr[exprs[0]->expression.vtype];
1196 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1197 (op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1198 exprs[0], exprs[1]);
1200 case opid3('&','~','='):
1201 /* This is like: a &= ~(b);
1202 * But QC has no bitwise-not, so we implement it as
1205 if (NotSameType(TYPE_FLOAT)) {
1206 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1207 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1208 parseerror(parser, "invalid types used in expression: %s and %s",
1212 if (ast_istype(exprs[0], ast_entfield))
1213 assignop = type_storep_instr[exprs[0]->expression.vtype];
1215 assignop = type_store_instr[exprs[0]->expression.vtype];
1216 out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1219 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1220 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1222 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1223 asbinstore->keep_dest = true;
1224 out = (ast_expression*)asbinstore;
1230 parseerror(parser, "failed to apply operand %s", op->op);
1234 DEBUGSHUNTDO(con_out("applied %s\n", op->op));
1235 vec_push(sy->out, syexp(ctx, out));
1239 static bool parser_close_call(parser_t *parser, shunt *sy)
1241 /* was a function call */
1242 ast_expression *fun;
1248 vec_shrinkby(sy->ops, 1);
1249 fid = sy->ops[vec_size(sy->ops)].off;
1251 /* out[fid] is the function
1252 * everything above is parameters...
1253 * 0 params = nothing
1254 * 1 params = ast_expression
1258 if (vec_size(sy->out) < 1 || vec_size(sy->out) <= fid) {
1259 parseerror(parser, "internal error: function call needs function and parameter list...");
1263 fun = sy->out[fid].out;
1265 if (fun == intrinsic_debug_typestring) {
1267 if (fid+2 != vec_size(sy->out) ||
1268 vec_last(sy->out).block)
1270 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1273 ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
1274 ast_unref(vec_last(sy->out).out);
1275 sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
1276 (ast_expression*)parser_const_string(parser, ty, false));
1277 vec_shrinkby(sy->out, 1);
1281 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1283 parseerror(parser, "internal error: failed to create ast_call node");
1287 if (fid+1 == vec_size(sy->out)) {
1290 } else if (fid+2 == vec_size(sy->out)) {
1292 vec_shrinkby(sy->out, 1);
1293 params = sy->out[vec_size(sy->out)].block;
1297 vec_push(call->params, sy->out[vec_size(sy->out)].out);
1299 paramcount = vec_size(params->exprs);
1300 call->params = params->exprs;
1301 params->exprs = NULL;
1304 (void)!ast_call_check_types(call);
1306 parseerror(parser, "invalid function call");
1310 /* overwrite fid, the function, with a call */
1311 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1313 if (fun->expression.vtype != TYPE_FUNCTION) {
1314 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
1318 if (!fun->expression.next) {
1319 parseerror(parser, "could not determine function return type");
1322 if (vec_size(fun->expression.params) != paramcount &&
1323 !((fun->expression.flags & AST_FLAG_VARIADIC) &&
1324 vec_size(fun->expression.params) < paramcount))
1327 const char *fewmany = (vec_size(fun->expression.params) > paramcount) ? "few" : "many";
1329 fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1330 if (opts.standard == COMPILER_GMQCC)
1333 parseerror(parser, "too %s parameters for call to %s: expected %i, got %i\n"
1334 " -> `%s` has been declared here: %s:%i",
1335 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1336 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1338 parseerror(parser, "too %s parameters for function call: expected %i, got %i\n"
1339 " -> it has been declared here: %s:%i",
1340 fewmany, (int)vec_size(fun->expression.params), (int)paramcount,
1341 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1347 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1348 "too %s parameters for call to %s: expected %i, got %i\n"
1349 " -> `%s` has been declared here: %s:%i",
1350 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1351 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1353 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1354 "too %s parameters for function call: expected %i, got %i\n"
1355 " -> it has been declared here: %s:%i",
1356 fewmany, (int)vec_size(fun->expression.params), (int)paramcount,
1357 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1365 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
1367 if (!vec_size(sy->ops)) {
1368 parseerror(parser, "unmatched closing paren");
1371 /* this would for bit a + (x) because there are no operators inside (x)
1372 if (sy->ops[vec_size(sy->ops)-1].paren == 1) {
1373 parseerror(parser, "empty parenthesis expression");
1377 while (vec_size(sy->ops)) {
1378 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_FUNC) {
1379 if (!parser_close_call(parser, sy))
1383 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_EXPR) {
1384 vec_shrinkby(sy->ops, 1);
1385 return !functions_only;
1387 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_INDEX) {
1390 /* pop off the parenthesis */
1391 vec_shrinkby(sy->ops, 1);
1392 /* then apply the index operator */
1393 if (!parser_sy_apply_operator(parser, sy))
1397 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_TERNARY) {
1400 if (vec_last(parser->pot) != POT_TERNARY1) {
1401 parseerror(parser, "mismatched colon in ternary expression (missing closing paren?)");
1404 vec_last(parser->pot) = POT_TERNARY2;
1405 /* pop off the parenthesis */
1406 vec_shrinkby(sy->ops, 1);
1409 if (!parser_sy_apply_operator(parser, sy))
1415 static void parser_reclassify_token(parser_t *parser)
1418 for (i = 0; i < operator_count; ++i) {
1419 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1420 parser->tok = TOKEN_OPERATOR;
1426 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma)
1428 ast_expression *expr = NULL;
1430 bool wantop = false;
1431 bool gotmemberof = false;
1433 /* count the parens because an if starts with one, so the
1434 * end of a condition is an unmatched closing paren
1442 parser->lex->flags.noops = false;
1444 parser_reclassify_token(parser);
1449 gotmemberof = false;
1451 parser->memberof = 0;
1453 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1454 parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "_"))
1456 /* a translatable string */
1460 parseerror(parser, "expected operator or end of statement, got constant");
1464 parser->lex->flags.noops = true;
1465 if (!parser_next(parser) || parser->tok != '(') {
1466 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1469 parser->lex->flags.noops = false;
1470 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1471 parseerror(parser, "expected a constant string in translatable-string extension");
1474 val = parser_const_string(parser, parser_tokval(parser), true);
1478 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1479 DEBUGSHUNTDO(con_out("push string\n"));
1481 if (!parser_next(parser) || parser->tok != ')') {
1482 parseerror(parser, "expected closing paren after translatable string");
1486 else if (parser->tok == TOKEN_IDENT)
1488 ast_expression *var;
1490 parseerror(parser, "expected operator or end of statement");
1495 if (opts.standard == COMPILER_GMQCC)
1497 if (parser->memberof == TYPE_ENTITY) {
1498 /* still get vars first since there could be a fieldpointer */
1499 var = parser_find_var(parser, parser_tokval(parser));
1501 var = parser_find_field(parser, parser_tokval(parser));
1503 else if (parser->memberof == TYPE_VECTOR)
1505 parseerror(parser, "TODO: implement effective vector member access");
1508 else if (parser->memberof) {
1509 parseerror(parser, "namespace for member not found");
1513 var = parser_find_var(parser, parser_tokval(parser));
1515 var = parser_find_var(parser, parser_tokval(parser));
1517 var = parser_find_field(parser, parser_tokval(parser));
1521 if (!strcmp(parser_tokval(parser), "__builtin_debug_typestring")) {
1522 var = (ast_expression*)intrinsic_debug_typestring;
1527 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1533 if (ast_istype(var, ast_value)) {
1534 ((ast_value*)var)->uses++;
1536 else if (ast_istype(var, ast_member)) {
1537 ast_member *mem = (ast_member*)var;
1538 if (ast_istype(mem->owner, ast_value))
1539 ((ast_value*)(mem->owner))->uses++;
1542 vec_push(sy.out, syexp(parser_ctx(parser), var));
1543 DEBUGSHUNTDO(con_out("push %s\n", parser_tokval(parser)));
1545 else if (parser->tok == TOKEN_FLOATCONST) {
1548 parseerror(parser, "expected operator or end of statement, got constant");
1552 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1555 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1556 DEBUGSHUNTDO(con_out("push %g\n", parser_token(parser)->constval.f));
1558 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1561 parseerror(parser, "expected operator or end of statement, got constant");
1565 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1568 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1569 DEBUGSHUNTDO(con_out("push %i\n", parser_token(parser)->constval.i));
1571 else if (parser->tok == TOKEN_STRINGCONST) {
1574 parseerror(parser, "expected operator or end of statement, got constant");
1578 val = parser_const_string(parser, parser_tokval(parser), false);
1581 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1582 DEBUGSHUNTDO(con_out("push string\n"));
1584 else if (parser->tok == TOKEN_VECTORCONST) {
1587 parseerror(parser, "expected operator or end of statement, got constant");
1591 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1594 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1595 DEBUGSHUNTDO(con_out("push '%g %g %g'\n",
1596 parser_token(parser)->constval.v.x,
1597 parser_token(parser)->constval.v.y,
1598 parser_token(parser)->constval.v.z));
1600 else if (parser->tok == '(') {
1601 parseerror(parser, "internal error: '(' should be classified as operator");
1604 else if (parser->tok == '[') {
1605 parseerror(parser, "internal error: '[' should be classified as operator");
1608 else if (parser->tok == ')') {
1610 DEBUGSHUNTDO(con_out("do[op] )\n"));
1614 /* we do expect an operator next */
1615 /* closing an opening paren */
1616 if (!parser_close_paren(parser, &sy, false))
1618 if (vec_last(parser->pot) != POT_PAREN) {
1619 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1622 vec_pop(parser->pot);
1624 DEBUGSHUNTDO(con_out("do[nop] )\n"));
1628 /* allowed for function calls */
1629 if (!parser_close_paren(parser, &sy, true))
1631 if (vec_last(parser->pot) != POT_PAREN) {
1632 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1635 vec_pop(parser->pot);
1639 else if (parser->tok == ']') {
1641 parseerror(parser, "operand expected");
1645 if (!parser_close_paren(parser, &sy, false))
1647 if (vec_last(parser->pot) != POT_PAREN) {
1648 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1651 vec_pop(parser->pot);
1654 else if (parser->tok == TOKEN_TYPENAME) {
1655 parseerror(parser, "unexpected typename");
1658 else if (parser->tok != TOKEN_OPERATOR) {
1660 parseerror(parser, "expected operator or end of statement");
1667 /* classify the operator */
1668 const oper_info *op;
1669 const oper_info *olast = NULL;
1671 for (o = 0; o < operator_count; ++o) {
1672 if (((!(operators[o].flags & OP_PREFIX) == !!wantop)) &&
1673 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1674 !strcmp(parser_tokval(parser), operators[o].op))
1679 if (o == operator_count) {
1680 /* no operator found... must be the end of the statement */
1683 /* found an operator */
1686 /* when declaring variables, a comma starts a new variable */
1687 if (op->id == opid1(',') && !parens && stopatcomma) {
1688 /* fixup the token */
1693 /* a colon without a pervious question mark cannot be a ternary */
1694 if (!ternaries && op->id == opid2(':','?')) {
1699 if (op->id == opid1(',')) {
1700 if (vec_size(parser->pot) && vec_last(parser->pot) == POT_TERNARY2) {
1701 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
1705 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1706 olast = &operators[vec_last(sy.ops).etype-1];
1709 (op->prec < olast->prec) ||
1710 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1712 if (!parser_sy_apply_operator(parser, &sy))
1714 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1715 olast = &operators[vec_last(sy.ops).etype-1];
1720 if (op->id == opid1('.') && opts.standard == COMPILER_GMQCC) {
1721 /* for gmqcc standard: open up the namespace of the previous type */
1722 ast_expression *prevex = vec_last(sy.out).out;
1724 parseerror(parser, "unexpected member operator");
1727 if (prevex->expression.vtype == TYPE_ENTITY)
1728 parser->memberof = TYPE_ENTITY;
1729 else if (prevex->expression.vtype == TYPE_VECTOR)
1730 parser->memberof = TYPE_VECTOR;
1732 parseerror(parser, "type error: type has no members");
1738 if (op->id == opid1('(')) {
1740 size_t sycount = vec_size(sy.out);
1741 DEBUGSHUNTDO(con_out("push [op] (\n"));
1742 ++parens; vec_push(parser->pot, POT_PAREN);
1743 /* we expected an operator, this is the function-call operator */
1744 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_FUNC, sycount-1));
1746 ++parens; vec_push(parser->pot, POT_PAREN);
1747 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_EXPR, 0));
1748 DEBUGSHUNTDO(con_out("push [nop] (\n"));
1751 } else if (op->id == opid1('[')) {
1753 parseerror(parser, "unexpected array subscript");
1756 ++parens; vec_push(parser->pot, POT_PAREN);
1757 /* push both the operator and the paren, this makes life easier */
1758 vec_push(sy.ops, syop(parser_ctx(parser), op));
1759 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_INDEX, 0));
1761 } else if (op->id == opid2('?',':')) {
1762 vec_push(sy.ops, syop(parser_ctx(parser), op));
1763 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_TERNARY, 0));
1766 vec_push(parser->pot, POT_TERNARY1);
1767 } else if (op->id == opid2(':','?')) {
1768 if (!vec_size(parser->pot)) {
1769 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1772 if (vec_last(parser->pot) != POT_TERNARY1) {
1773 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1776 if (!parser_close_paren(parser, &sy, false))
1778 vec_push(sy.ops, syop(parser_ctx(parser), op));
1782 DEBUGSHUNTDO(con_out("push operator %s\n", op->op));
1783 vec_push(sy.ops, syop(parser_ctx(parser), op));
1784 wantop = !!(op->flags & OP_SUFFIX);
1787 if (!parser_next(parser)) {
1790 if (parser->tok == ';' ||
1791 (!parens && parser->tok == ']'))
1797 while (vec_size(sy.ops)) {
1798 if (!parser_sy_apply_operator(parser, &sy))
1802 parser->lex->flags.noops = true;
1803 if (!vec_size(sy.out)) {
1804 parseerror(parser, "empty expression");
1807 expr = sy.out[0].out;
1810 DEBUGSHUNTDO(con_out("shunt done\n"));
1811 if (vec_size(parser->pot)) {
1812 parseerror(parser, "internal error: vec_size(parser->pot) = %lu", (unsigned long)vec_size(parser->pot));
1815 vec_free(parser->pot);
1819 parser->lex->flags.noops = true;
1825 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma)
1827 ast_expression *e = parse_expression_leave(parser, stopatcomma);
1830 if (!parser_next(parser)) {
1837 static void parser_enterblock(parser_t *parser)
1839 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
1840 vec_push(parser->_blocklocals, vec_size(parser->_locals));
1841 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
1842 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
1843 vec_push(parser->_block_ctx, parser_ctx(parser));
1846 static bool parser_leaveblock(parser_t *parser)
1849 size_t locals, typedefs;
1851 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
1852 parseerror(parser, "internal error: parser_leaveblock with no block");
1856 util_htdel(vec_last(parser->variables));
1857 vec_pop(parser->variables);
1858 if (!vec_size(parser->_blocklocals)) {
1859 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
1863 locals = vec_last(parser->_blocklocals);
1864 vec_pop(parser->_blocklocals);
1865 while (vec_size(parser->_locals) != locals) {
1866 ast_expression *e = vec_last(parser->_locals);
1867 ast_value *v = (ast_value*)e;
1868 vec_pop(parser->_locals);
1869 if (ast_istype(e, ast_value) && !v->uses) {
1870 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name))
1875 typedefs = vec_last(parser->_blocktypedefs);
1876 while (vec_size(parser->_typedefs) != typedefs) {
1877 ast_delete(vec_last(parser->_typedefs));
1878 vec_pop(parser->_typedefs);
1880 util_htdel(vec_last(parser->typedefs));
1881 vec_pop(parser->typedefs);
1883 vec_pop(parser->_block_ctx);
1887 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
1889 vec_push(parser->_locals, e);
1890 util_htset(vec_last(parser->variables), name, (void*)e);
1893 static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
1897 ast_expression *prev;
1899 if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->expression.vtype == TYPE_STRING)
1902 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
1905 parseerror(parser, "internal error: failed to process condition");
1910 else if (OPTS_FLAG(CORRECT_LOGIC) && cond->expression.vtype == TYPE_VECTOR)
1912 /* vector types need to be cast to true booleans */
1913 ast_binary *bin = (ast_binary*)cond;
1914 if (!OPTS_FLAG(PERL_LOGIC) || !ast_istype(cond, ast_binary) || !(bin->op == INSTR_AND || bin->op == INSTR_OR))
1916 /* in perl-logic, AND and OR take care of the -fcorrect-logic */
1918 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_V, cond);
1921 parseerror(parser, "internal error: failed to process condition");
1928 unary = (ast_unary*)cond;
1929 while (ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F)
1931 cond = unary->operand;
1932 unary->operand = NULL;
1935 unary = (ast_unary*)cond;
1939 parseerror(parser, "internal error: failed to process condition");
1941 if (ifnot) *_ifnot = !*_ifnot;
1945 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
1948 ast_expression *cond, *ontrue = NULL, *onfalse = NULL;
1951 lex_ctx ctx = parser_ctx(parser);
1953 (void)block; /* not touching */
1955 /* skip the 'if', parse an optional 'not' and check for an opening paren */
1956 if (!parser_next(parser)) {
1957 parseerror(parser, "expected condition or 'not'");
1960 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
1962 if (!parser_next(parser)) {
1963 parseerror(parser, "expected condition in parenthesis");
1967 if (parser->tok != '(') {
1968 parseerror(parser, "expected 'if' condition in parenthesis");
1971 /* parse into the expression */
1972 if (!parser_next(parser)) {
1973 parseerror(parser, "expected 'if' condition after opening paren");
1976 /* parse the condition */
1977 cond = parse_expression_leave(parser, false);
1981 if (parser->tok != ')') {
1982 parseerror(parser, "expected closing paren after 'if' condition");
1986 /* parse into the 'then' branch */
1987 if (!parser_next(parser)) {
1988 parseerror(parser, "expected statement for on-true branch of 'if'");
1992 if (!parse_statement_or_block(parser, &ontrue)) {
1996 /* check for an else */
1997 if (!strcmp(parser_tokval(parser), "else")) {
1998 /* parse into the 'else' branch */
1999 if (!parser_next(parser)) {
2000 parseerror(parser, "expected on-false branch after 'else'");
2005 if (!parse_statement_or_block(parser, &onfalse)) {
2012 cond = process_condition(parser, cond, &ifnot);
2014 if (ontrue) ast_delete(ontrue);
2015 if (onfalse) ast_delete(onfalse);
2020 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
2022 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
2023 *out = (ast_expression*)ifthen;
2027 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out);
2028 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
2033 /* skip the 'while' and get the body */
2034 if (!parser_next(parser)) {
2035 if (OPTS_FLAG(LOOP_LABELS))
2036 parseerror(parser, "expected loop label or 'while' condition in parenthesis");
2038 parseerror(parser, "expected 'while' condition in parenthesis");
2042 if (parser->tok == ':') {
2043 if (!OPTS_FLAG(LOOP_LABELS))
2044 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2045 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2046 parseerror(parser, "expected loop label");
2049 label = util_strdup(parser_tokval(parser));
2050 if (!parser_next(parser)) {
2052 parseerror(parser, "expected 'while' condition in parenthesis");
2057 if (parser->tok != '(') {
2058 parseerror(parser, "expected 'while' condition in parenthesis");
2062 vec_push(parser->breaks, label);
2063 vec_push(parser->continues, label);
2065 rv = parse_while_go(parser, block, out);
2068 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2069 parseerror(parser, "internal error: label stack corrupted");
2075 vec_pop(parser->breaks);
2076 vec_pop(parser->continues);
2081 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out)
2084 ast_expression *cond, *ontrue;
2088 lex_ctx ctx = parser_ctx(parser);
2090 (void)block; /* not touching */
2092 /* parse into the expression */
2093 if (!parser_next(parser)) {
2094 parseerror(parser, "expected 'while' condition after opening paren");
2097 /* parse the condition */
2098 cond = parse_expression_leave(parser, false);
2102 if (parser->tok != ')') {
2103 parseerror(parser, "expected closing paren after 'while' condition");
2107 /* parse into the 'then' branch */
2108 if (!parser_next(parser)) {
2109 parseerror(parser, "expected while-loop body");
2113 if (!parse_statement_or_block(parser, &ontrue)) {
2118 cond = process_condition(parser, cond, &ifnot);
2123 aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue);
2124 *out = (ast_expression*)aloop;
2128 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out);
2129 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2134 /* skip the 'do' and get the body */
2135 if (!parser_next(parser)) {
2136 if (OPTS_FLAG(LOOP_LABELS))
2137 parseerror(parser, "expected loop label or body");
2139 parseerror(parser, "expected loop body");
2143 if (parser->tok == ':') {
2144 if (!OPTS_FLAG(LOOP_LABELS))
2145 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2146 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2147 parseerror(parser, "expected loop label");
2150 label = util_strdup(parser_tokval(parser));
2151 if (!parser_next(parser)) {
2153 parseerror(parser, "expected loop body");
2158 vec_push(parser->breaks, label);
2159 vec_push(parser->continues, label);
2161 rv = parse_dowhile_go(parser, block, out);
2164 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2165 parseerror(parser, "internal error: label stack corrupted");
2171 vec_pop(parser->breaks);
2172 vec_pop(parser->continues);
2177 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out)
2180 ast_expression *cond, *ontrue;
2184 lex_ctx ctx = parser_ctx(parser);
2186 (void)block; /* not touching */
2188 if (!parse_statement_or_block(parser, &ontrue))
2191 /* expect the "while" */
2192 if (parser->tok != TOKEN_KEYWORD ||
2193 strcmp(parser_tokval(parser), "while"))
2195 parseerror(parser, "expected 'while' and condition");
2200 /* skip the 'while' and check for opening paren */
2201 if (!parser_next(parser) || parser->tok != '(') {
2202 parseerror(parser, "expected 'while' condition in parenthesis");
2206 /* parse into the expression */
2207 if (!parser_next(parser)) {
2208 parseerror(parser, "expected 'while' condition after opening paren");
2212 /* parse the condition */
2213 cond = parse_expression_leave(parser, false);
2217 if (parser->tok != ')') {
2218 parseerror(parser, "expected closing paren after 'while' condition");
2224 if (!parser_next(parser) || parser->tok != ';') {
2225 parseerror(parser, "expected semicolon after condition");
2231 if (!parser_next(parser)) {
2232 parseerror(parser, "parse error");
2238 cond = process_condition(parser, cond, &ifnot);
2243 aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue);
2244 *out = (ast_expression*)aloop;
2248 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out);
2249 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2254 /* skip the 'for' and check for opening paren */
2255 if (!parser_next(parser)) {
2256 if (OPTS_FLAG(LOOP_LABELS))
2257 parseerror(parser, "expected loop label or 'for' expressions in parenthesis");
2259 parseerror(parser, "expected 'for' expressions in parenthesis");
2263 if (parser->tok == ':') {
2264 if (!OPTS_FLAG(LOOP_LABELS))
2265 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2266 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2267 parseerror(parser, "expected loop label");
2270 label = util_strdup(parser_tokval(parser));
2271 if (!parser_next(parser)) {
2273 parseerror(parser, "expected 'for' expressions in parenthesis");
2278 if (parser->tok != '(') {
2279 parseerror(parser, "expected 'for' expressions in parenthesis");
2283 vec_push(parser->breaks, label);
2284 vec_push(parser->continues, label);
2286 rv = parse_for_go(parser, block, out);
2289 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2290 parseerror(parser, "internal error: label stack corrupted");
2296 vec_pop(parser->breaks);
2297 vec_pop(parser->continues);
2301 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out)
2304 ast_expression *initexpr, *cond, *increment, *ontrue;
2310 lex_ctx ctx = parser_ctx(parser);
2312 parser_enterblock(parser);
2319 /* parse into the expression */
2320 if (!parser_next(parser)) {
2321 parseerror(parser, "expected 'for' initializer after opening paren");
2326 if (parser->tok == TOKEN_IDENT)
2327 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2329 if (typevar || parser->tok == TOKEN_TYPENAME) {
2330 if (opts.standard != COMPILER_GMQCC) {
2331 if (parsewarning(parser, WARN_EXTENSIONS,
2332 "current standard does not allow variable declarations in for-loop initializers"))
2335 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false, 0))
2338 else if (parser->tok != ';')
2340 initexpr = parse_expression_leave(parser, false);
2345 /* move on to condition */
2346 if (parser->tok != ';') {
2347 parseerror(parser, "expected semicolon after for-loop initializer");
2350 if (!parser_next(parser)) {
2351 parseerror(parser, "expected for-loop condition");
2355 /* parse the condition */
2356 if (parser->tok != ';') {
2357 cond = parse_expression_leave(parser, false);
2362 /* move on to incrementor */
2363 if (parser->tok != ';') {
2364 parseerror(parser, "expected semicolon after for-loop initializer");
2367 if (!parser_next(parser)) {
2368 parseerror(parser, "expected for-loop condition");
2372 /* parse the incrementor */
2373 if (parser->tok != ')') {
2374 increment = parse_expression_leave(parser, false);
2377 if (!ast_side_effects(increment)) {
2378 if (genwarning(ast_ctx(increment), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2384 if (parser->tok != ')') {
2385 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2388 /* parse into the 'then' branch */
2389 if (!parser_next(parser)) {
2390 parseerror(parser, "expected for-loop body");
2393 if (!parse_statement_or_block(parser, &ontrue))
2397 cond = process_condition(parser, cond, &ifnot);
2401 aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue);
2402 *out = (ast_expression*)aloop;
2404 if (!parser_leaveblock(parser))
2408 if (initexpr) ast_delete(initexpr);
2409 if (cond) ast_delete(cond);
2410 if (increment) ast_delete(increment);
2411 (void)!parser_leaveblock(parser);
2415 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2417 ast_expression *exp = NULL;
2418 ast_return *ret = NULL;
2419 ast_value *expected = parser->function->vtype;
2421 lex_ctx ctx = parser_ctx(parser);
2423 (void)block; /* not touching */
2425 if (!parser_next(parser)) {
2426 parseerror(parser, "expected return expression");
2430 if (parser->tok != ';') {
2431 exp = parse_expression(parser, false);
2435 if (exp->expression.vtype != expected->expression.next->expression.vtype) {
2436 parseerror(parser, "return with invalid expression");
2439 ret = ast_return_new(ctx, exp);
2445 if (!parser_next(parser))
2446 parseerror(parser, "parse error");
2447 if (expected->expression.next->expression.vtype != TYPE_VOID) {
2448 if (opts.standard != COMPILER_GMQCC)
2449 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2451 parseerror(parser, "return without value");
2453 ret = ast_return_new(ctx, NULL);
2455 *out = (ast_expression*)ret;
2459 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2462 unsigned int levels = 0;
2463 lex_ctx ctx = parser_ctx(parser);
2464 const char **loops = (is_continue ? parser->continues : parser->breaks);
2466 (void)block; /* not touching */
2467 if (!parser_next(parser)) {
2468 parseerror(parser, "expected semicolon or loop label");
2472 if (parser->tok == TOKEN_IDENT) {
2473 if (!OPTS_FLAG(LOOP_LABELS))
2474 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2475 i = vec_size(loops);
2477 if (loops[i] && !strcmp(loops[i], parser_tokval(parser)))
2480 parseerror(parser, "no such loop to %s: `%s`",
2481 (is_continue ? "continue" : "break out of"),
2482 parser_tokval(parser));
2487 if (!parser_next(parser)) {
2488 parseerror(parser, "expected semicolon");
2493 if (parser->tok != ';') {
2494 parseerror(parser, "expected semicolon");
2498 if (!parser_next(parser))
2499 parseerror(parser, "parse error");
2501 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue, levels);
2505 /* returns true when it was a variable qualifier, false otherwise!
2506 * on error, cvq is set to CV_WRONG
2508 static bool parse_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *is_static, uint32_t *_flags)
2510 bool had_const = false;
2511 bool had_var = false;
2512 bool had_noref = false;
2513 bool had_attrib = false;
2514 bool had_static = false;
2519 if (parser->tok == TOKEN_ATTRIBUTE_OPEN) {
2521 /* parse an attribute */
2522 if (!parser_next(parser)) {
2523 parseerror(parser, "expected attribute after `[[`");
2527 if (!strcmp(parser_tokval(parser), "noreturn")) {
2528 flags |= AST_FLAG_NORETURN;
2529 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2530 parseerror(parser, "`noreturn` attribute has no parameters, expected `]]`");
2535 else if (!strcmp(parser_tokval(parser), "noref")) {
2537 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2538 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2543 else if (!strcmp(parser_tokval(parser), "inline")) {
2544 flags |= AST_FLAG_INLINE;
2545 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2546 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2553 /* Skip tokens until we hit a ]] */
2554 (void)!parsewarning(parser, WARN_UNKNOWN_ATTRIBUTE, "unknown attribute starting with `%s`", parser_tokval(parser));
2555 while (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2556 if (!parser_next(parser)) {
2557 parseerror(parser, "error inside attribute");
2564 else if (!strcmp(parser_tokval(parser), "static"))
2566 else if (!strcmp(parser_tokval(parser), "const"))
2568 else if (!strcmp(parser_tokval(parser), "var"))
2570 else if (with_local && !strcmp(parser_tokval(parser), "local"))
2572 else if (!strcmp(parser_tokval(parser), "noref"))
2574 else if (!had_const && !had_var && !had_noref && !had_attrib && !had_static && !flags) {
2579 if (!parser_next(parser))
2589 *is_static = had_static;
2593 parseerror(parser, "parse error after variable qualifier");
2598 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out);
2599 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
2604 /* skip the 'while' and get the body */
2605 if (!parser_next(parser)) {
2606 if (OPTS_FLAG(LOOP_LABELS))
2607 parseerror(parser, "expected loop label or 'switch' operand in parenthesis");
2609 parseerror(parser, "expected 'switch' operand in parenthesis");
2613 if (parser->tok == ':') {
2614 if (!OPTS_FLAG(LOOP_LABELS))
2615 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2616 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2617 parseerror(parser, "expected loop label");
2620 label = util_strdup(parser_tokval(parser));
2621 if (!parser_next(parser)) {
2623 parseerror(parser, "expected 'switch' operand in parenthesis");
2628 if (parser->tok != '(') {
2629 parseerror(parser, "expected 'switch' operand in parenthesis");
2633 vec_push(parser->breaks, label);
2635 rv = parse_switch_go(parser, block, out);
2638 if (vec_last(parser->breaks) != label) {
2639 parseerror(parser, "internal error: label stack corrupted");
2645 vec_pop(parser->breaks);
2650 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out)
2652 ast_expression *operand;
2655 ast_switch *switchnode;
2656 ast_switch_case swcase;
2659 bool noref, is_static;
2660 uint32_t qflags = 0;
2662 lex_ctx ctx = parser_ctx(parser);
2664 (void)block; /* not touching */
2667 /* parse into the expression */
2668 if (!parser_next(parser)) {
2669 parseerror(parser, "expected switch operand");
2672 /* parse the operand */
2673 operand = parse_expression_leave(parser, false);
2677 switchnode = ast_switch_new(ctx, operand);
2680 if (parser->tok != ')') {
2681 ast_delete(switchnode);
2682 parseerror(parser, "expected closing paren after 'switch' operand");
2686 /* parse over the opening paren */
2687 if (!parser_next(parser) || parser->tok != '{') {
2688 ast_delete(switchnode);
2689 parseerror(parser, "expected list of cases");
2693 if (!parser_next(parser)) {
2694 ast_delete(switchnode);
2695 parseerror(parser, "expected 'case' or 'default'");
2699 /* new block; allow some variables to be declared here */
2700 parser_enterblock(parser);
2703 if (parser->tok == TOKEN_IDENT)
2704 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2705 if (typevar || parser->tok == TOKEN_TYPENAME) {
2706 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0)) {
2707 ast_delete(switchnode);
2712 if (parse_qualifiers(parser, true, &cvq, &noref, &is_static, &qflags))
2714 if (cvq == CV_WRONG) {
2715 ast_delete(switchnode);
2718 if (!parse_variable(parser, block, false, cvq, NULL, noref, is_static, qflags)) {
2719 ast_delete(switchnode);
2728 while (parser->tok != '}') {
2729 ast_block *caseblock;
2731 if (!strcmp(parser_tokval(parser), "case")) {
2732 if (!parser_next(parser)) {
2733 ast_delete(switchnode);
2734 parseerror(parser, "expected expression for case");
2737 swcase.value = parse_expression_leave(parser, false);
2738 if (!swcase.value) {
2739 ast_delete(switchnode);
2740 parseerror(parser, "expected expression for case");
2743 if (!OPTS_FLAG(RELAXED_SWITCH)) {
2744 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
2745 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
2751 else if (!strcmp(parser_tokval(parser), "default")) {
2752 swcase.value = NULL;
2753 if (!parser_next(parser)) {
2754 ast_delete(switchnode);
2755 parseerror(parser, "expected colon");
2760 ast_delete(switchnode);
2761 parseerror(parser, "expected 'case' or 'default'");
2765 /* Now the colon and body */
2766 if (parser->tok != ':') {
2767 if (swcase.value) ast_unref(swcase.value);
2768 ast_delete(switchnode);
2769 parseerror(parser, "expected colon");
2773 if (!parser_next(parser)) {
2774 if (swcase.value) ast_unref(swcase.value);
2775 ast_delete(switchnode);
2776 parseerror(parser, "expected statements or case");
2779 caseblock = ast_block_new(parser_ctx(parser));
2781 if (swcase.value) ast_unref(swcase.value);
2782 ast_delete(switchnode);
2785 swcase.code = (ast_expression*)caseblock;
2786 vec_push(switchnode->cases, swcase);
2788 ast_expression *expr;
2789 if (parser->tok == '}')
2791 if (parser->tok == TOKEN_KEYWORD) {
2792 if (!strcmp(parser_tokval(parser), "case") ||
2793 !strcmp(parser_tokval(parser), "default"))
2798 if (!parse_statement(parser, caseblock, &expr, true)) {
2799 ast_delete(switchnode);
2804 if (!ast_block_add_expr(caseblock, expr)) {
2805 ast_delete(switchnode);
2811 parser_leaveblock(parser);
2814 if (parser->tok != '}') {
2815 ast_delete(switchnode);
2816 parseerror(parser, "expected closing paren of case list");
2819 if (!parser_next(parser)) {
2820 ast_delete(switchnode);
2821 parseerror(parser, "parse error after switch");
2824 *out = (ast_expression*)switchnode;
2828 static bool parse_goto(parser_t *parser, ast_expression **out)
2833 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2834 parseerror(parser, "expected label name after `goto`");
2838 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
2840 for (i = 0; i < vec_size(parser->labels); ++i) {
2841 if (!strcmp(parser->labels[i]->name, parser_tokval(parser))) {
2842 ast_goto_set_label(gt, parser->labels[i]);
2846 if (i == vec_size(parser->labels))
2847 vec_push(parser->gotos, gt);
2849 if (!parser_next(parser) || parser->tok != ';') {
2850 parseerror(parser, "semicolon expected after goto label");
2853 if (!parser_next(parser)) {
2854 parseerror(parser, "parse error after goto");
2858 *out = (ast_expression*)gt;
2862 static bool parse_skipwhite(parser_t *parser)
2865 if (!parser_next(parser))
2867 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
2868 return parser->tok < TOKEN_ERROR;
2871 static bool parse_eol(parser_t *parser)
2873 if (!parse_skipwhite(parser))
2875 return parser->tok == TOKEN_EOL;
2878 static bool parse_pragma_do(parser_t *parser)
2880 if (!parser_next(parser) ||
2881 parser->tok != TOKEN_IDENT ||
2882 strcmp(parser_tokval(parser), "pragma"))
2884 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
2887 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
2888 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
2892 if (!strcmp(parser_tokval(parser), "noref")) {
2893 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
2894 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
2897 parser->noref = !!parser_token(parser)->constval.i;
2898 if (!parse_eol(parser)) {
2899 parseerror(parser, "parse error after `noref` pragma");
2905 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
2912 static bool parse_pragma(parser_t *parser)
2915 parser->lex->flags.preprocessing = true;
2916 parser->lex->flags.mergelines = true;
2917 rv = parse_pragma_do(parser);
2918 if (parser->tok != TOKEN_EOL) {
2919 parseerror(parser, "junk after pragma");
2922 parser->lex->flags.preprocessing = false;
2923 parser->lex->flags.mergelines = false;
2924 if (!parser_next(parser)) {
2925 parseerror(parser, "parse error after pragma");
2931 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
2933 bool noref, is_static;
2935 uint32_t qflags = 0;
2936 ast_value *typevar = NULL;
2940 if (parser->tok == TOKEN_IDENT)
2941 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2943 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
2945 /* local variable */
2947 parseerror(parser, "cannot declare a variable from here");
2950 if (opts.standard == COMPILER_QCC) {
2951 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
2954 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0))
2958 else if (parse_qualifiers(parser, !!block, &cvq, &noref, &is_static, &qflags))
2960 if (cvq == CV_WRONG)
2962 return parse_variable(parser, block, true, cvq, NULL, noref, is_static, qflags);
2964 else if (parser->tok == TOKEN_KEYWORD)
2966 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
2971 if (!parser_next(parser)) {
2972 parseerror(parser, "parse error after __builtin_debug_printtype");
2976 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
2978 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
2979 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
2980 if (!parser_next(parser)) {
2981 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
2987 if (!parse_statement(parser, block, out, allow_cases))
2990 con_out("__builtin_debug_printtype: got no output node\n");
2993 ast_type_to_string(*out, ty, sizeof(ty));
2994 con_out("__builtin_debug_printtype: `%s`\n", ty);
2999 else if (!strcmp(parser_tokval(parser), "return"))
3001 return parse_return(parser, block, out);
3003 else if (!strcmp(parser_tokval(parser), "if"))
3005 return parse_if(parser, block, out);
3007 else if (!strcmp(parser_tokval(parser), "while"))
3009 return parse_while(parser, block, out);
3011 else if (!strcmp(parser_tokval(parser), "do"))
3013 return parse_dowhile(parser, block, out);
3015 else if (!strcmp(parser_tokval(parser), "for"))
3017 if (opts.standard == COMPILER_QCC) {
3018 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
3021 return parse_for(parser, block, out);
3023 else if (!strcmp(parser_tokval(parser), "break"))
3025 return parse_break_continue(parser, block, out, false);
3027 else if (!strcmp(parser_tokval(parser), "continue"))
3029 return parse_break_continue(parser, block, out, true);
3031 else if (!strcmp(parser_tokval(parser), "switch"))
3033 return parse_switch(parser, block, out);
3035 else if (!strcmp(parser_tokval(parser), "case") ||
3036 !strcmp(parser_tokval(parser), "default"))
3039 parseerror(parser, "unexpected 'case' label");
3044 else if (!strcmp(parser_tokval(parser), "goto"))
3046 return parse_goto(parser, out);
3048 else if (!strcmp(parser_tokval(parser), "typedef"))
3050 if (!parser_next(parser)) {
3051 parseerror(parser, "expected type definition after 'typedef'");
3054 return parse_typedef(parser);
3056 parseerror(parser, "Unexpected keyword");
3059 else if (parser->tok == '{')
3062 inner = parse_block(parser);
3065 *out = (ast_expression*)inner;
3068 else if (parser->tok == ':')
3072 if (!parser_next(parser)) {
3073 parseerror(parser, "expected label name");
3076 if (parser->tok != TOKEN_IDENT) {
3077 parseerror(parser, "label must be an identifier");
3080 label = ast_label_new(parser_ctx(parser), parser_tokval(parser));
3083 vec_push(parser->labels, label);
3084 *out = (ast_expression*)label;
3085 if (!parser_next(parser)) {
3086 parseerror(parser, "parse error after label");
3089 for (i = 0; i < vec_size(parser->gotos); ++i) {
3090 if (!strcmp(parser->gotos[i]->name, label->name)) {
3091 ast_goto_set_label(parser->gotos[i], label);
3092 vec_remove(parser->gotos, i, 1);
3098 else if (parser->tok == ';')
3100 if (!parser_next(parser)) {
3101 parseerror(parser, "parse error after empty statement");
3108 ast_expression *exp = parse_expression(parser, false);
3112 if (!ast_side_effects(exp)) {
3113 if (genwarning(ast_ctx(exp), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
3120 static bool parse_block_into(parser_t *parser, ast_block *block)
3124 parser_enterblock(parser);
3126 if (!parser_next(parser)) { /* skip the '{' */
3127 parseerror(parser, "expected function body");
3131 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
3133 ast_expression *expr = NULL;
3134 if (parser->tok == '}')
3137 if (!parse_statement(parser, block, &expr, false)) {
3138 /* parseerror(parser, "parse error"); */
3144 if (!ast_block_add_expr(block, expr)) {
3151 if (parser->tok != '}') {
3154 (void)parser_next(parser);
3158 if (!parser_leaveblock(parser))
3160 return retval && !!block;
3163 static ast_block* parse_block(parser_t *parser)
3166 block = ast_block_new(parser_ctx(parser));
3169 if (!parse_block_into(parser, block)) {
3170 ast_block_delete(block);
3176 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
3178 if (parser->tok == '{') {
3179 *out = (ast_expression*)parse_block(parser);
3182 return parse_statement(parser, NULL, out, false);
3185 static bool create_vector_members(ast_value *var, ast_member **me)
3188 size_t len = strlen(var->name);
3190 for (i = 0; i < 3; ++i) {
3191 char *name = (char*)mem_a(len+3);
3192 memcpy(name, var->name, len);
3194 name[len+1] = 'x'+i;
3196 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
3205 do { ast_member_delete(me[--i]); } while(i);
3209 static bool parse_function_body(parser_t *parser, ast_value *var)
3211 ast_block *block = NULL;
3216 ast_expression *framenum = NULL;
3217 ast_expression *nextthink = NULL;
3218 /* None of the following have to be deleted */
3219 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
3220 ast_expression *gbl_time = NULL, *gbl_self = NULL;
3221 bool has_frame_think;
3225 has_frame_think = false;
3226 old = parser->function;
3228 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
3229 parseerror(parser, "gotos/labels leaking");
3233 if (var->expression.flags & AST_FLAG_VARIADIC) {
3234 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
3235 "variadic function with implementation will not be able to access additional parameters"))
3241 if (parser->tok == '[') {
3242 /* got a frame definition: [ framenum, nextthink ]
3243 * this translates to:
3244 * self.frame = framenum;
3245 * self.nextthink = time + 0.1;
3246 * self.think = nextthink;
3250 fld_think = parser_find_field(parser, "think");
3251 fld_nextthink = parser_find_field(parser, "nextthink");
3252 fld_frame = parser_find_field(parser, "frame");
3253 if (!fld_think || !fld_nextthink || !fld_frame) {
3254 parseerror(parser, "cannot use [frame,think] notation without the required fields");
3255 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
3258 gbl_time = parser_find_global(parser, "time");
3259 gbl_self = parser_find_global(parser, "self");
3260 if (!gbl_time || !gbl_self) {
3261 parseerror(parser, "cannot use [frame,think] notation without the required globals");
3262 parseerror(parser, "please declare the following globals: `time`, `self`");
3266 if (!parser_next(parser))
3269 framenum = parse_expression_leave(parser, true);
3271 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
3274 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
3275 ast_unref(framenum);
3276 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
3280 if (parser->tok != ',') {
3281 ast_unref(framenum);
3282 parseerror(parser, "expected comma after frame number in [frame,think] notation");
3283 parseerror(parser, "Got a %i\n", parser->tok);
3287 if (!parser_next(parser)) {
3288 ast_unref(framenum);
3292 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
3294 /* qc allows the use of not-yet-declared functions here
3295 * - this automatically creates a prototype */
3296 ast_value *thinkfunc;
3297 ast_expression *functype = fld_think->expression.next;
3299 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
3300 if (!thinkfunc || !ast_type_adopt(thinkfunc, functype)) {
3301 ast_unref(framenum);
3302 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
3306 if (!parser_next(parser)) {
3307 ast_unref(framenum);
3308 ast_delete(thinkfunc);
3312 vec_push(parser->globals, (ast_expression*)thinkfunc);
3313 util_htset(parser->htglobals, thinkfunc->name, thinkfunc);
3314 nextthink = (ast_expression*)thinkfunc;
3317 nextthink = parse_expression_leave(parser, true);
3319 ast_unref(framenum);
3320 parseerror(parser, "expected a think-function in [frame,think] notation");
3325 if (!ast_istype(nextthink, ast_value)) {
3326 parseerror(parser, "think-function in [frame,think] notation must be a constant");
3330 if (retval && parser->tok != ']') {
3331 parseerror(parser, "expected closing `]` for [frame,think] notation");
3335 if (retval && !parser_next(parser)) {
3339 if (retval && parser->tok != '{') {
3340 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
3345 ast_unref(nextthink);
3346 ast_unref(framenum);
3350 has_frame_think = true;
3353 block = ast_block_new(parser_ctx(parser));
3355 parseerror(parser, "failed to allocate block");
3356 if (has_frame_think) {
3357 ast_unref(nextthink);
3358 ast_unref(framenum);
3363 if (has_frame_think) {
3365 ast_expression *self_frame;
3366 ast_expression *self_nextthink;
3367 ast_expression *self_think;
3368 ast_expression *time_plus_1;
3369 ast_store *store_frame;
3370 ast_store *store_nextthink;
3371 ast_store *store_think;
3373 ctx = parser_ctx(parser);
3374 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
3375 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
3376 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
3378 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
3379 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
3381 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
3382 if (self_frame) ast_delete(self_frame);
3383 if (self_nextthink) ast_delete(self_nextthink);
3384 if (self_think) ast_delete(self_think);
3385 if (time_plus_1) ast_delete(time_plus_1);
3391 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
3392 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
3393 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
3396 ast_delete(self_frame);
3399 if (!store_nextthink) {
3400 ast_delete(self_nextthink);
3404 ast_delete(self_think);
3408 if (store_frame) ast_delete(store_frame);
3409 if (store_nextthink) ast_delete(store_nextthink);
3410 if (store_think) ast_delete(store_think);
3413 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
3414 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
3415 !ast_block_add_expr(block, (ast_expression*)store_think))
3422 parseerror(parser, "failed to generate code for [frame,think]");
3423 ast_unref(nextthink);
3424 ast_unref(framenum);
3430 parser_enterblock(parser);
3432 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
3434 ast_value *param = var->expression.params[parami];
3437 if (param->expression.vtype != TYPE_VECTOR &&
3438 (param->expression.vtype != TYPE_FIELD ||
3439 param->expression.next->expression.vtype != TYPE_VECTOR))
3444 if (!create_vector_members(param, me)) {
3445 ast_block_delete(block);
3449 for (e = 0; e < 3; ++e) {
3450 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
3451 ast_block_collect(block, (ast_expression*)me[e]);
3455 func = ast_function_new(ast_ctx(var), var->name, var);
3457 parseerror(parser, "failed to allocate function for `%s`", var->name);
3458 ast_block_delete(block);
3461 vec_push(parser->functions, func);
3463 parser->function = func;
3464 if (!parse_block_into(parser, block)) {
3465 ast_block_delete(block);
3469 vec_push(func->blocks, block);
3471 parser->function = old;
3472 if (!parser_leaveblock(parser))
3474 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
3475 parseerror(parser, "internal error: local scopes left");
3479 if (parser->tok == ';')
3480 return parser_next(parser);
3481 else if (opts.standard == COMPILER_QCC)
3482 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
3486 vec_pop(parser->functions);
3487 ast_function_delete(func);
3488 var->constval.vfunc = NULL;
3491 (void)!parser_leaveblock(parser);
3492 parser->function = old;
3496 static ast_expression *array_accessor_split(
3501 ast_expression *left,
3502 ast_expression *right
3508 lex_ctx ctx = ast_ctx(array);
3510 if (!left || !right) {
3511 if (left) ast_delete(left);
3512 if (right) ast_delete(right);
3516 cmp = ast_binary_new(ctx, INSTR_LT,
3517 (ast_expression*)index,
3518 (ast_expression*)parser_const_float(parser, middle));
3522 parseerror(parser, "internal error: failed to create comparison for array setter");
3526 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
3528 ast_delete(cmp); /* will delete left and right */
3529 parseerror(parser, "internal error: failed to create conditional jump for array setter");
3533 return (ast_expression*)ifthen;
3536 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
3538 lex_ctx ctx = ast_ctx(array);
3540 if (from+1 == afterend) {
3541 /* set this value */
3544 ast_array_index *subscript;
3546 int assignop = type_store_instr[value->expression.vtype];
3548 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3549 assignop = INSTR_STORE_V;
3551 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3555 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
3557 ast_delete(subscript);
3561 block = ast_block_new(ctx);
3567 if (!ast_block_add_expr(block, (ast_expression*)st)) {
3572 ret = ast_return_new(ctx, NULL);
3578 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
3583 return (ast_expression*)block;
3585 ast_expression *left, *right;
3586 size_t diff = afterend - from;
3587 size_t middle = from + diff/2;
3588 left = array_setter_node(parser, array, index, value, from, middle);
3589 right = array_setter_node(parser, array, index, value, middle, afterend);
3590 return array_accessor_split(parser, array, index, middle, left, right);
3594 static ast_expression *array_field_setter_node(
3603 lex_ctx ctx = ast_ctx(array);
3605 if (from+1 == afterend) {
3606 /* set this value */
3609 ast_entfield *entfield;
3610 ast_array_index *subscript;
3612 int assignop = type_storep_instr[value->expression.vtype];
3614 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3615 assignop = INSTR_STOREP_V;
3617 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3621 entfield = ast_entfield_new_force(ctx,
3622 (ast_expression*)entity,
3623 (ast_expression*)subscript,
3624 (ast_expression*)subscript);
3626 ast_delete(subscript);
3630 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
3632 ast_delete(entfield);
3636 block = ast_block_new(ctx);
3642 if (!ast_block_add_expr(block, (ast_expression*)st)) {
3647 ret = ast_return_new(ctx, NULL);
3653 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
3658 return (ast_expression*)block;
3660 ast_expression *left, *right;
3661 size_t diff = afterend - from;
3662 size_t middle = from + diff/2;
3663 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
3664 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
3665 return array_accessor_split(parser, array, index, middle, left, right);
3669 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
3671 lex_ctx ctx = ast_ctx(array);
3673 if (from+1 == afterend) {
3675 ast_array_index *subscript;
3677 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3681 ret = ast_return_new(ctx, (ast_expression*)subscript);
3683 ast_delete(subscript);
3687 return (ast_expression*)ret;
3689 ast_expression *left, *right;
3690 size_t diff = afterend - from;
3691 size_t middle = from + diff/2;
3692 left = array_getter_node(parser, array, index, from, middle);
3693 right = array_getter_node(parser, array, index, middle, afterend);
3694 return array_accessor_split(parser, array, index, middle, left, right);
3698 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
3700 ast_function *func = NULL;
3701 ast_value *fval = NULL;
3702 ast_block *body = NULL;
3704 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
3706 parseerror(parser, "failed to create accessor function value");
3710 func = ast_function_new(ast_ctx(array), funcname, fval);
3713 parseerror(parser, "failed to create accessor function node");
3717 body = ast_block_new(ast_ctx(array));
3719 parseerror(parser, "failed to create block for array accessor");
3725 vec_push(func->blocks, body);
3728 vec_push(parser->accessors, fval);
3733 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
3735 ast_expression *root = NULL;
3736 ast_value *index = NULL;
3737 ast_value *value = NULL;
3741 if (!ast_istype(array->expression.next, ast_value)) {
3742 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3746 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3748 func = fval->constval.vfunc;
3749 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
3751 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3752 value = ast_value_copy((ast_value*)array->expression.next);
3754 if (!index || !value) {
3755 parseerror(parser, "failed to create locals for array accessor");
3758 (void)!ast_value_set_name(value, "value"); /* not important */
3759 vec_push(fval->expression.params, index);
3760 vec_push(fval->expression.params, value);
3762 root = array_setter_node(parser, array, index, value, 0, array->expression.count);
3764 parseerror(parser, "failed to build accessor search tree");
3768 array->setter = fval;
3769 return ast_block_add_expr(func->blocks[0], root);
3771 if (index) ast_delete(index);
3772 if (value) ast_delete(value);
3773 if (root) ast_delete(root);
3779 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
3781 ast_expression *root = NULL;
3782 ast_value *entity = NULL;
3783 ast_value *index = NULL;
3784 ast_value *value = NULL;
3788 if (!ast_istype(array->expression.next, ast_value)) {
3789 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3793 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3795 func = fval->constval.vfunc;
3796 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
3798 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
3799 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3800 value = ast_value_copy((ast_value*)array->expression.next);
3801 if (!entity || !index || !value) {
3802 parseerror(parser, "failed to create locals for array accessor");
3805 (void)!ast_value_set_name(value, "value"); /* not important */
3806 vec_push(fval->expression.params, entity);
3807 vec_push(fval->expression.params, index);
3808 vec_push(fval->expression.params, value);
3810 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
3812 parseerror(parser, "failed to build accessor search tree");
3816 array->setter = fval;
3817 return ast_block_add_expr(func->blocks[0], root);
3819 if (entity) ast_delete(entity);
3820 if (index) ast_delete(index);
3821 if (value) ast_delete(value);
3822 if (root) ast_delete(root);
3828 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
3830 ast_expression *root = NULL;
3831 ast_value *index = NULL;
3835 /* NOTE: checking array->expression.next rather than elemtype since
3836 * for fields elemtype is a temporary fieldtype.
3838 if (!ast_istype(array->expression.next, ast_value)) {
3839 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3843 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3845 func = fval->constval.vfunc;
3846 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
3848 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3851 parseerror(parser, "failed to create locals for array accessor");
3854 vec_push(fval->expression.params, index);
3856 root = array_getter_node(parser, array, index, 0, array->expression.count);
3858 parseerror(parser, "failed to build accessor search tree");
3862 array->getter = fval;
3863 return ast_block_add_expr(func->blocks[0], root);
3865 if (index) ast_delete(index);
3866 if (root) ast_delete(root);
3872 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
3873 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
3881 bool variadic = false;
3883 ctx = parser_ctx(parser);
3885 /* for the sake of less code we parse-in in this function */
3886 if (!parser_next(parser)) {
3887 parseerror(parser, "expected parameter list");
3893 /* parse variables until we hit a closing paren */
3894 while (parser->tok != ')') {
3896 /* there must be commas between them */
3897 if (parser->tok != ',') {
3898 parseerror(parser, "expected comma or end of parameter list");
3901 if (!parser_next(parser)) {
3902 parseerror(parser, "expected parameter");
3908 if (parser->tok == TOKEN_DOTS) {
3909 /* '...' indicates a varargs function */
3911 if (!parser_next(parser)) {
3912 parseerror(parser, "expected parameter");
3915 if (parser->tok != ')') {
3916 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
3922 /* for anything else just parse a typename */
3923 param = parse_typename(parser, NULL, NULL);
3926 vec_push(params, param);
3927 if (param->expression.vtype >= TYPE_VARIANT) {
3928 char tname[1024]; /* typename is reserved in C++ */
3929 ast_type_to_string((ast_expression*)param, tname, sizeof(tname));
3930 parseerror(parser, "type not supported as part of a parameter list: %s", tname);
3936 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
3940 if (vec_size(params) > 8 && opts.standard == COMPILER_QCC)
3941 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
3944 if (!parser_next(parser)) {
3945 parseerror(parser, "parse error after typename");
3949 /* now turn 'var' into a function type */
3950 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
3951 fval->expression.next = (ast_expression*)var;
3953 fval->expression.flags |= AST_FLAG_VARIADIC;
3956 var->expression.params = params;
3963 for (i = 0; i < vec_size(params); ++i)
3964 ast_delete(params[i]);
3969 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
3971 ast_expression *cexp;
3972 ast_value *cval, *tmp;
3975 ctx = parser_ctx(parser);
3977 if (!parser_next(parser)) {
3979 parseerror(parser, "expected array-size");
3983 cexp = parse_expression_leave(parser, true);
3985 if (!cexp || !ast_istype(cexp, ast_value)) {
3989 parseerror(parser, "expected array-size as constant positive integer");
3992 cval = (ast_value*)cexp;
3994 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
3995 tmp->expression.next = (ast_expression*)var;
3998 if (cval->expression.vtype == TYPE_INTEGER)
3999 tmp->expression.count = cval->constval.vint;
4000 else if (cval->expression.vtype == TYPE_FLOAT)
4001 tmp->expression.count = cval->constval.vfloat;
4005 parseerror(parser, "array-size must be a positive integer constant");
4010 if (parser->tok != ']') {
4012 parseerror(parser, "expected ']' after array-size");
4015 if (!parser_next(parser)) {
4017 parseerror(parser, "error after parsing array size");
4023 /* Parse a complete typename.
4024 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
4025 * but when parsing variables separated by comma
4026 * 'storebase' should point to where the base-type should be kept.
4027 * The base type makes up every bit of type information which comes *before* the
4030 * The following will be parsed in its entirety:
4032 * The 'basetype' in this case is 'void()'
4033 * and if there's a comma after it, say:
4035 * then the type-information 'void()' can be stored in 'storebase'
4037 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
4039 ast_value *var, *tmp;
4042 const char *name = NULL;
4043 bool isfield = false;
4044 bool wasarray = false;
4045 size_t morefields = 0;
4047 ctx = parser_ctx(parser);
4049 /* types may start with a dot */
4050 if (parser->tok == '.') {
4052 /* if we parsed a dot we need a typename now */
4053 if (!parser_next(parser)) {
4054 parseerror(parser, "expected typename for field definition");
4058 /* Further dots are handled seperately because they won't be part of the
4061 while (parser->tok == '.') {
4063 if (!parser_next(parser)) {
4064 parseerror(parser, "expected typename for field definition");
4069 if (parser->tok == TOKEN_IDENT)
4070 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
4071 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
4072 parseerror(parser, "expected typename");
4076 /* generate the basic type value */
4077 if (cached_typedef) {
4078 var = ast_value_copy(cached_typedef);
4079 ast_value_set_name(var, "<type(from_def)>");
4081 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
4083 for (; morefields; --morefields) {
4084 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
4085 tmp->expression.next = (ast_expression*)var;
4089 /* do not yet turn into a field - remember:
4090 * .void() foo; is a field too
4091 * .void()() foo; is a function
4095 if (!parser_next(parser)) {
4097 parseerror(parser, "parse error after typename");
4101 /* an opening paren now starts the parameter-list of a function
4102 * this is where original-QC has parameter lists.
4103 * We allow a single parameter list here.
4104 * Much like fteqcc we don't allow `float()() x`
4106 if (parser->tok == '(') {
4107 var = parse_parameter_list(parser, var);
4112 /* store the base if requested */
4114 *storebase = ast_value_copy(var);
4116 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4117 tmp->expression.next = (ast_expression*)*storebase;
4122 /* there may be a name now */
4123 if (parser->tok == TOKEN_IDENT) {
4124 name = util_strdup(parser_tokval(parser));
4126 if (!parser_next(parser)) {
4128 parseerror(parser, "error after variable or field declaration");
4133 /* now this may be an array */
4134 if (parser->tok == '[') {
4136 var = parse_arraysize(parser, var);
4141 /* This is the point where we can turn it into a field */
4143 /* turn it into a field if desired */
4144 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4145 tmp->expression.next = (ast_expression*)var;
4149 /* now there may be function parens again */
4150 if (parser->tok == '(' && opts.standard == COMPILER_QCC)
4151 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4152 if (parser->tok == '(' && wasarray)
4153 parseerror(parser, "arrays as part of a return type is not supported");
4154 while (parser->tok == '(') {
4155 var = parse_parameter_list(parser, var);
4164 /* finally name it */
4166 if (!ast_value_set_name(var, name)) {
4168 parseerror(parser, "internal error: failed to set name");
4171 /* free the name, ast_value_set_name duplicates */
4178 static bool parse_typedef(parser_t *parser)
4180 ast_value *typevar, *oldtype;
4181 ast_expression *old;
4183 typevar = parse_typename(parser, NULL, NULL);
4188 if ( (old = parser_find_var(parser, typevar->name)) ) {
4189 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
4190 " -> `%s` has been declared here: %s:%i",
4191 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
4192 ast_delete(typevar);
4196 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
4197 parseerror(parser, "type `%s` has already been declared here: %s:%i",
4198 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
4199 ast_delete(typevar);
4203 vec_push(parser->_typedefs, typevar);
4204 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
4206 if (parser->tok != ';') {
4207 parseerror(parser, "expected semicolon after typedef");
4210 if (!parser_next(parser)) {
4211 parseerror(parser, "parse error after typedef");
4218 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref, bool is_static, uint32_t qflags)
4222 ast_expression *old;
4226 ast_value *basetype = NULL;
4228 bool isparam = false;
4229 bool isvector = false;
4230 bool cleanvar = true;
4231 bool wasarray = false;
4235 if (!localblock && is_static)
4236 parseerror(parser, "`static` qualifier is not supported in global scope");
4238 /* get the first complete variable */
4239 var = parse_typename(parser, &basetype, cached_typedef);
4242 ast_delete(basetype);
4250 /* Part 0: finish the type */
4251 if (parser->tok == '(') {
4252 if (opts.standard == COMPILER_QCC)
4253 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4254 var = parse_parameter_list(parser, var);
4260 /* we only allow 1-dimensional arrays */
4261 if (parser->tok == '[') {
4263 var = parse_arraysize(parser, var);
4269 if (parser->tok == '(' && wasarray) {
4270 parseerror(parser, "arrays as part of a return type is not supported");
4271 /* we'll still parse the type completely for now */
4273 /* for functions returning functions */
4274 while (parser->tok == '(') {
4275 if (opts.standard == COMPILER_QCC)
4276 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4277 var = parse_parameter_list(parser, var);
4284 var->cvq = qualifier;
4285 /* in a noref section we simply bump the usecount */
4286 if (noref || parser->noref)
4288 var->expression.flags |= qflags;
4291 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
4292 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
4293 * is then filled with the previous definition and the parameter-names replaced.
4295 if (!strcmp(var->name, "nil")) {
4296 if (OPTS_FLAG(UNTYPED_NIL)) {
4297 if (!localblock || !OPTS_FLAG(PERMISSIVE))
4298 parseerror(parser, "name `nil` not allowed (try -fpermissive)");
4300 (void)!parsewarning(parser, WARN_RESERVED_NAMES, "variable name `nil` is reserved");
4303 /* Deal with end_sys_ vars */
4305 if (!strcmp(var->name, "end_sys_globals")) {
4307 parser->crc_globals = vec_size(parser->globals);
4310 else if (!strcmp(var->name, "end_sys_fields")) {
4312 parser->crc_fields = vec_size(parser->fields);
4315 if (was_end && var->expression.vtype == TYPE_FIELD) {
4316 if (parsewarning(parser, WARN_END_SYS_FIELDS,
4317 "global '%s' hint should not be a field",
4318 parser_tokval(parser)))
4325 if (!nofields && var->expression.vtype == TYPE_FIELD)
4327 /* deal with field declarations */
4328 old = parser_find_field(parser, var->name);
4330 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
4331 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
4340 parseerror(parser, "field `%s` already declared here: %s:%i",
4341 var->name, ast_ctx(old).file, ast_ctx(old).line);
4346 if (opts.standard == COMPILER_QCC &&
4347 (old = parser_find_global(parser, var->name)))
4349 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
4350 parseerror(parser, "field `%s` already declared here: %s:%i",
4351 var->name, ast_ctx(old).file, ast_ctx(old).line);
4358 /* deal with other globals */
4359 old = parser_find_global(parser, var->name);
4360 if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
4362 /* This is a function which had a prototype */
4363 if (!ast_istype(old, ast_value)) {
4364 parseerror(parser, "internal error: prototype is not an ast_value");
4368 proto = (ast_value*)old;
4369 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
4370 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
4372 ast_ctx(proto).file, ast_ctx(proto).line);
4376 /* we need the new parameter-names */
4377 for (i = 0; i < vec_size(proto->expression.params); ++i)
4378 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
4386 if (opts.standard == COMPILER_GMQCC) {
4387 parseerror(parser, "global `%s` already declared here: %s:%i",
4388 var->name, ast_ctx(old).file, ast_ctx(old).line);
4392 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
4393 "global `%s` already declared here: %s:%i",
4394 var->name, ast_ctx(old).file, ast_ctx(old).line))
4399 proto = (ast_value*)old;
4400 if (!ast_istype(old, ast_value)) {
4401 parseerror(parser, "internal error: not an ast_value");
4410 if (opts.standard == COMPILER_QCC &&
4411 (old = parser_find_field(parser, var->name)))
4413 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
4414 parseerror(parser, "global `%s` already declared here: %s:%i",
4415 var->name, ast_ctx(old).file, ast_ctx(old).line);
4422 else /* it's not a global */
4424 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
4425 if (old && !isparam) {
4426 parseerror(parser, "local `%s` already declared here: %s:%i",
4427 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
4431 old = parser_find_local(parser, var->name, 0, &isparam);
4432 if (old && isparam) {
4433 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
4434 "local `%s` is shadowing a parameter", var->name))
4436 parseerror(parser, "local `%s` already declared here: %s:%i",
4437 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
4441 if (opts.standard != COMPILER_GMQCC) {
4450 * Create the global/local, and deal with vector types.
4453 if (var->expression.vtype == TYPE_VECTOR)
4455 else if (var->expression.vtype == TYPE_FIELD &&
4456 var->expression.next->expression.vtype == TYPE_VECTOR)
4460 if (!create_vector_members(var, me)) {
4467 /* deal with global variables, fields, functions */
4468 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
4469 var->isfield = true;
4470 vec_push(parser->fields, (ast_expression*)var);
4471 util_htset(parser->htfields, var->name, var);
4473 for (i = 0; i < 3; ++i) {
4474 vec_push(parser->fields, (ast_expression*)me[i]);
4475 util_htset(parser->htfields, me[i]->name, me[i]);
4480 vec_push(parser->globals, (ast_expression*)var);
4481 util_htset(parser->htglobals, var->name, var);
4483 for (i = 0; i < 3; ++i) {
4484 vec_push(parser->globals, (ast_expression*)me[i]);
4485 util_htset(parser->htglobals, me[i]->name, me[i]);
4491 /* a static adds itself to be generated like any other global
4492 * but is added to the local namespace instead
4494 char *defname = NULL;
4495 size_t prefix_len, ln;
4497 ln = strlen(parser->function->name);
4498 vec_append(defname, ln, parser->function->name);
4500 vec_append(defname, 2, "::");
4501 /* remember the length up to here */
4502 prefix_len = vec_size(defname);
4504 /* Add it to the local scope */
4505 util_htset(vec_last(parser->variables), var->name, (void*)var);
4506 /* now rename the global */
4507 ln = strlen(var->name);
4508 vec_append(defname, ln, var->name);
4509 ast_value_set_name(var, defname);
4511 /* push it to the to-be-generated globals */
4512 vec_push(parser->globals, (ast_expression*)var);
4514 /* same game for the vector members */
4516 for (i = 0; i < 3; ++i) {
4517 util_htset(vec_last(parser->variables), me[i]->name, (void*)(me[i]));
4519 vec_shrinkto(defname, prefix_len);
4520 ln = strlen(me[i]->name);
4521 vec_append(defname, ln, me[i]->name);
4522 ast_member_set_name(me[i], defname);
4524 vec_push(parser->globals, (ast_expression*)me[i]);
4529 vec_push(localblock->locals, var);
4530 parser_addlocal(parser, var->name, (ast_expression*)var);
4532 for (i = 0; i < 3; ++i) {
4533 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
4534 ast_block_collect(localblock, (ast_expression*)me[i]);
4540 me[0] = me[1] = me[2] = NULL;
4545 if (var->expression.vtype == TYPE_ARRAY) {
4547 snprintf(name, sizeof(name), "%s##SET", var->name);
4548 if (!parser_create_array_setter(parser, var, name))
4550 snprintf(name, sizeof(name), "%s##GET", var->name);
4551 if (!parser_create_array_getter(parser, var, var->expression.next, name))
4554 else if (!localblock && !nofields &&
4555 var->expression.vtype == TYPE_FIELD &&
4556 var->expression.next->expression.vtype == TYPE_ARRAY)
4559 ast_expression *telem;
4561 ast_value *array = (ast_value*)var->expression.next;
4563 if (!ast_istype(var->expression.next, ast_value)) {
4564 parseerror(parser, "internal error: field element type must be an ast_value");
4568 snprintf(name, sizeof(name), "%s##SETF", var->name);
4569 if (!parser_create_array_field_setter(parser, array, name))
4572 telem = ast_type_copy(ast_ctx(var), array->expression.next);
4573 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
4574 tfield->expression.next = telem;
4575 snprintf(name, sizeof(name), "%s##GETFP", var->name);
4576 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
4584 if (parser->tok == ';') {
4585 ast_delete(basetype);
4586 if (!parser_next(parser)) {
4587 parseerror(parser, "error after variable declaration");
4593 if (parser->tok == ',')
4597 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
4600 parseerror(parser, "missing comma or semicolon while parsing variables");
4604 if (localblock && opts.standard == COMPILER_QCC) {
4605 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
4606 "initializing expression turns variable `%s` into a constant in this standard",
4613 if (parser->tok != '{') {
4614 if (parser->tok != '=') {
4615 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
4619 if (!parser_next(parser)) {
4620 parseerror(parser, "error parsing initializer");
4624 else if (opts.standard == COMPILER_QCC) {
4625 parseerror(parser, "expected '=' before function body in this standard");
4628 if (parser->tok == '#') {
4629 ast_function *func = NULL;
4632 parseerror(parser, "cannot declare builtins within functions");
4635 if (var->expression.vtype != TYPE_FUNCTION) {
4636 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
4639 if (!parser_next(parser)) {
4640 parseerror(parser, "expected builtin number");
4643 if (parser->tok != TOKEN_INTCONST) {
4644 parseerror(parser, "builtin number must be an integer constant");
4647 if (parser_token(parser)->constval.i < 0) {
4648 parseerror(parser, "builtin number must be an integer greater than zero");
4652 if (var->hasvalue) {
4653 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
4654 "builtin `%s` has already been defined\n"
4655 " -> previous declaration here: %s:%i",
4656 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
4660 func = ast_function_new(ast_ctx(var), var->name, var);
4662 parseerror(parser, "failed to allocate function for `%s`", var->name);
4665 vec_push(parser->functions, func);
4667 func->builtin = -parser_token(parser)->constval.i-1;
4670 if (!parser_next(parser)) {
4671 parseerror(parser, "expected comma or semicolon");
4673 ast_function_delete(func);
4674 var->constval.vfunc = NULL;
4678 else if (parser->tok == '{' || parser->tok == '[')
4681 parseerror(parser, "cannot declare functions within functions");
4686 ast_ctx(proto) = parser_ctx(parser);
4688 if (!parse_function_body(parser, var))
4690 ast_delete(basetype);
4691 for (i = 0; i < vec_size(parser->gotos); ++i)
4692 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
4693 vec_free(parser->gotos);
4694 vec_free(parser->labels);
4697 ast_expression *cexp;
4700 cexp = parse_expression_leave(parser, true);
4705 cval = (ast_value*)cexp;
4706 if (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
4707 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
4710 if (opts.standard != COMPILER_GMQCC &&
4711 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
4712 qualifier != CV_VAR)
4714 var->cvq = CV_CONST;
4716 var->hasvalue = true;
4717 if (cval->expression.vtype == TYPE_STRING)
4718 var->constval.vstring = parser_strdup(cval->constval.vstring);
4719 else if (cval->expression.vtype == TYPE_FIELD)
4720 var->constval.vfield = cval;
4722 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
4727 shunt sy = { NULL, NULL };
4730 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
4731 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
4732 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
4733 if (!parser_sy_apply_operator(parser, &sy))
4736 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
4737 parseerror(parser, "internal error: leaked operands");
4738 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
4748 if (parser->tok == ',') {
4749 if (!parser_next(parser)) {
4750 parseerror(parser, "expected another variable");
4754 if (parser->tok != TOKEN_IDENT) {
4755 parseerror(parser, "expected another variable");
4758 var = ast_value_copy(basetype);
4760 ast_value_set_name(var, parser_tokval(parser));
4761 if (!parser_next(parser)) {
4762 parseerror(parser, "error parsing variable declaration");
4768 if (parser->tok != ';') {
4769 parseerror(parser, "missing semicolon after variables");
4773 if (!parser_next(parser)) {
4774 parseerror(parser, "parse error after variable declaration");
4778 ast_delete(basetype);
4782 if (cleanvar && var)
4784 ast_delete(basetype);
4788 ast_delete(basetype);
4789 if (cleanvar && var)
4791 if (me[0]) ast_member_delete(me[0]);
4792 if (me[1]) ast_member_delete(me[1]);
4793 if (me[2]) ast_member_delete(me[2]);
4797 static bool parser_global_statement(parser_t *parser)
4801 bool is_static = false;
4802 uint32_t qflags = 0;
4803 ast_value *istype = NULL;
4805 if (parser->tok == TOKEN_IDENT)
4806 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
4808 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
4810 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false, 0);
4812 else if (parse_qualifiers(parser, false, &cvq, &noref, &is_static, &qflags))
4814 if (cvq == CV_WRONG)
4816 return parse_variable(parser, NULL, true, cvq, NULL, noref, is_static, qflags);
4818 else if (parser->tok == TOKEN_KEYWORD)
4820 if (!strcmp(parser_tokval(parser), "typedef")) {
4821 if (!parser_next(parser)) {
4822 parseerror(parser, "expected type definition after 'typedef'");
4825 return parse_typedef(parser);
4827 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
4830 else if (parser->tok == '#')
4832 return parse_pragma(parser);
4834 else if (parser->tok == '$')
4836 if (!parser_next(parser)) {
4837 parseerror(parser, "parse error");
4843 parseerror(parser, "unexpected token: %s", parser->lex->tok.value);
4849 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
4851 return util_crc16(old, str, strlen(str));
4854 static void progdefs_crc_file(const char *str)
4856 /* write to progdefs.h here */
4860 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
4862 old = progdefs_crc_sum(old, str);
4863 progdefs_crc_file(str);
4867 static void generate_checksum(parser_t *parser)
4869 uint16_t crc = 0xFFFF;
4873 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
4874 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
4876 progdefs_crc_file("\tint\tpad;\n");
4877 progdefs_crc_file("\tint\tofs_return[3];\n");
4878 progdefs_crc_file("\tint\tofs_parm0[3];\n");
4879 progdefs_crc_file("\tint\tofs_parm1[3];\n");
4880 progdefs_crc_file("\tint\tofs_parm2[3];\n");
4881 progdefs_crc_file("\tint\tofs_parm3[3];\n");
4882 progdefs_crc_file("\tint\tofs_parm4[3];\n");
4883 progdefs_crc_file("\tint\tofs_parm5[3];\n");
4884 progdefs_crc_file("\tint\tofs_parm6[3];\n");
4885 progdefs_crc_file("\tint\tofs_parm7[3];\n");
4887 for (i = 0; i < parser->crc_globals; ++i) {
4888 if (!ast_istype(parser->globals[i], ast_value))
4890 value = (ast_value*)(parser->globals[i]);
4891 switch (value->expression.vtype) {
4892 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
4893 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
4894 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
4895 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
4897 crc = progdefs_crc_both(crc, "\tint\t");
4900 crc = progdefs_crc_both(crc, value->name);
4901 crc = progdefs_crc_both(crc, ";\n");
4903 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
4904 for (i = 0; i < parser->crc_fields; ++i) {
4905 if (!ast_istype(parser->fields[i], ast_value))
4907 value = (ast_value*)(parser->fields[i]);
4908 switch (value->expression.next->expression.vtype) {
4909 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
4910 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
4911 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
4912 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
4914 crc = progdefs_crc_both(crc, "\tint\t");
4917 crc = progdefs_crc_both(crc, value->name);
4918 crc = progdefs_crc_both(crc, ";\n");
4920 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
4925 static parser_t *parser;
4932 parser = (parser_t*)mem_a(sizeof(parser_t));
4936 memset(parser, 0, sizeof(*parser));
4938 for (i = 0; i < operator_count; ++i) {
4939 if (operators[i].id == opid1('=')) {
4940 parser->assign_op = operators+i;
4944 if (!parser->assign_op) {
4945 printf("internal error: initializing parser: failed to find assign operator\n");
4950 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
4951 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
4952 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
4953 vec_push(parser->_blocktypedefs, 0);
4955 empty_ctx.file = "<internal>";
4957 parser->nil = ast_value_new(empty_ctx, "nil", TYPE_NIL);
4958 if (OPTS_FLAG(UNTYPED_NIL))
4959 util_htset(parser->htglobals, "nil", (void*)parser->nil);
4963 bool parser_compile()
4965 /* initial lexer/parser state */
4966 parser->lex->flags.noops = true;
4968 if (parser_next(parser))
4970 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
4972 if (!parser_global_statement(parser)) {
4973 if (parser->tok == TOKEN_EOF)
4974 parseerror(parser, "unexpected eof");
4975 else if (compile_errors)
4976 parseerror(parser, "there have been errors, bailing out");
4977 lex_close(parser->lex);
4983 parseerror(parser, "parse error");
4984 lex_close(parser->lex);
4989 lex_close(parser->lex);
4992 return !compile_errors;
4995 bool parser_compile_file(const char *filename)
4997 parser->lex = lex_open(filename);
4999 con_err("failed to open file \"%s\"\n", filename);
5002 return parser_compile();
5005 bool parser_compile_string(const char *name, const char *str, size_t len)
5007 parser->lex = lex_open_string(str, len, name);
5009 con_err("failed to create lexer for string \"%s\"\n", name);
5012 return parser_compile();
5015 void parser_cleanup()
5018 for (i = 0; i < vec_size(parser->accessors); ++i) {
5019 ast_delete(parser->accessors[i]->constval.vfunc);
5020 parser->accessors[i]->constval.vfunc = NULL;
5021 ast_delete(parser->accessors[i]);
5023 for (i = 0; i < vec_size(parser->functions); ++i) {
5024 ast_delete(parser->functions[i]);
5026 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
5027 ast_delete(parser->imm_vector[i]);
5029 for (i = 0; i < vec_size(parser->imm_string); ++i) {
5030 ast_delete(parser->imm_string[i]);
5032 for (i = 0; i < vec_size(parser->imm_float); ++i) {
5033 ast_delete(parser->imm_float[i]);
5035 for (i = 0; i < vec_size(parser->fields); ++i) {
5036 ast_delete(parser->fields[i]);
5038 for (i = 0; i < vec_size(parser->globals); ++i) {
5039 ast_delete(parser->globals[i]);
5041 vec_free(parser->accessors);
5042 vec_free(parser->functions);
5043 vec_free(parser->imm_vector);
5044 vec_free(parser->imm_string);
5045 vec_free(parser->imm_float);
5046 vec_free(parser->globals);
5047 vec_free(parser->fields);
5049 for (i = 0; i < vec_size(parser->variables); ++i)
5050 util_htdel(parser->variables[i]);
5051 vec_free(parser->variables);
5052 vec_free(parser->_blocklocals);
5053 vec_free(parser->_locals);
5055 for (i = 0; i < vec_size(parser->_typedefs); ++i)
5056 ast_delete(parser->_typedefs[i]);
5057 vec_free(parser->_typedefs);
5058 for (i = 0; i < vec_size(parser->typedefs); ++i)
5059 util_htdel(parser->typedefs[i]);
5060 vec_free(parser->typedefs);
5061 vec_free(parser->_blocktypedefs);
5063 vec_free(parser->_block_ctx);
5065 vec_free(parser->labels);
5066 vec_free(parser->gotos);
5067 vec_free(parser->breaks);
5068 vec_free(parser->continues);
5073 bool parser_finish(const char *output)
5079 if (compile_errors) {
5080 con_out("*** there were compile errors\n");
5084 ir = ir_builder_new("gmqcc_out");
5086 con_out("failed to allocate builder\n");
5090 for (i = 0; i < vec_size(parser->fields); ++i) {
5093 if (!ast_istype(parser->fields[i], ast_value))
5095 field = (ast_value*)parser->fields[i];
5096 hasvalue = field->hasvalue;
5097 field->hasvalue = false;
5098 if (!ast_global_codegen((ast_value*)field, ir, true)) {
5099 con_out("failed to generate field %s\n", field->name);
5100 ir_builder_delete(ir);
5105 ast_expression *subtype;
5106 field->hasvalue = true;
5107 subtype = field->expression.next;
5108 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
5109 if (subtype->expression.vtype == TYPE_FIELD)
5110 ifld->fieldtype = subtype->expression.next->expression.vtype;
5111 else if (subtype->expression.vtype == TYPE_FUNCTION)
5112 ifld->outtype = subtype->expression.next->expression.vtype;
5113 (void)!ir_value_set_field(field->ir_v, ifld);
5116 for (i = 0; i < vec_size(parser->globals); ++i) {
5118 if (!ast_istype(parser->globals[i], ast_value))
5120 asvalue = (ast_value*)(parser->globals[i]);
5121 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
5122 retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
5123 "unused global: `%s`", asvalue->name);
5125 if (!ast_global_codegen(asvalue, ir, false)) {
5126 con_out("failed to generate global %s\n", asvalue->name);
5127 ir_builder_delete(ir);
5131 for (i = 0; i < vec_size(parser->imm_float); ++i) {
5132 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
5133 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
5134 ir_builder_delete(ir);
5138 for (i = 0; i < vec_size(parser->imm_string); ++i) {
5139 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
5140 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
5141 ir_builder_delete(ir);
5145 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
5146 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
5147 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
5148 ir_builder_delete(ir);
5152 for (i = 0; i < vec_size(parser->globals); ++i) {
5154 if (!ast_istype(parser->globals[i], ast_value))
5156 asvalue = (ast_value*)(parser->globals[i]);
5157 if (asvalue->cvq == CV_CONST && !asvalue->hasvalue)
5158 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_CONSTANT,
5159 "uninitialized constant: `%s`",
5161 else if ((asvalue->cvq == CV_NONE || asvalue->cvq == CV_CONST) && !asvalue->hasvalue)
5162 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_GLOBAL,
5163 "uninitialized global: `%s`",
5165 if (!ast_generate_accessors(asvalue, ir)) {
5166 ir_builder_delete(ir);
5170 for (i = 0; i < vec_size(parser->fields); ++i) {
5172 asvalue = (ast_value*)(parser->fields[i]->expression.next);
5174 if (!ast_istype((ast_expression*)asvalue, ast_value))
5176 if (asvalue->expression.vtype != TYPE_ARRAY)
5178 if (!ast_generate_accessors(asvalue, ir)) {
5179 ir_builder_delete(ir);
5183 for (i = 0; i < vec_size(parser->functions); ++i) {
5184 if (!ast_function_codegen(parser->functions[i], ir)) {
5185 con_out("failed to generate function %s\n", parser->functions[i]->name);
5186 ir_builder_delete(ir);
5191 ir_builder_dump(ir, con_out);
5192 for (i = 0; i < vec_size(parser->functions); ++i) {
5193 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
5194 con_out("failed to finalize function %s\n", parser->functions[i]->name);
5195 ir_builder_delete(ir);
5200 if (compile_Werrors) {
5201 con_out("*** there were warnings treated as errors\n");
5202 compile_show_werrors();
5208 ir_builder_dump(ir, con_out);
5210 generate_checksum(parser);
5212 if (!ir_builder_generate(ir, output)) {
5213 con_out("*** failed to generate output file\n");
5214 ir_builder_delete(ir);
5219 ir_builder_delete(ir);