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7 * the Software without restriction, including without limitation the rights to
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15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
29 #define PARSER_HT_FIELDS 0
30 #define PARSER_HT_GLOBALS 1
31 /* beginning of locals */
32 #define PARSER_HT_LOCALS 2
34 #define PARSER_HT_SIZE 1024
35 #define TYPEDEF_HT_SIZE 16
41 ast_expression **globals;
42 ast_expression **fields;
43 ast_function **functions;
44 ast_value **imm_float;
45 ast_value **imm_string;
46 ast_value **imm_vector;
49 /* must be deleted first, they reference immediates and values */
50 ast_value **accessors;
52 ast_value *imm_float_zero;
53 ast_value *imm_float_one;
54 ast_value *imm_vector_zero;
59 ast_function *function;
61 /* A list of hashtables for each scope */
67 /* not to be used directly, we use the hash table */
68 ast_expression **_locals;
70 ast_value **_typedefs;
71 size_t *_blocktypedefs;
75 /* we store the '=' operator info */
76 const oper_info *assign_op;
78 /* TYPE_FIELD -> parser_find_fields is used instead of find_var
79 * TODO: TYPE_VECTOR -> x, y and z are accepted in the gmqcc standard
80 * anything else: type error
85 static void parser_enterblock(parser_t *parser);
86 static bool parser_leaveblock(parser_t *parser);
87 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e);
88 static bool parse_typedef(parser_t *parser);
89 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, bool is_const, ast_value *cached_typedef);
90 static ast_block* parse_block(parser_t *parser, bool warnreturn);
91 static bool parse_block_into(parser_t *parser, ast_block *block, bool warnreturn);
92 static ast_expression* parse_statement_or_block(parser_t *parser);
93 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases);
94 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma);
95 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma);
97 static void parseerror(parser_t *parser, const char *fmt, ...)
104 con_vprintmsg(LVL_ERROR, parser->lex->tok.ctx.file, parser->lex->tok.ctx.line, "parse error", fmt, ap);
108 /* returns true if it counts as an error */
109 static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
112 int lvl = LVL_WARNING;
114 if (!OPTS_WARN(warntype))
123 con_vprintmsg(lvl, parser->lex->tok.ctx.file, parser->lex->tok.ctx.line, "warning", fmt, ap);
129 static bool GMQCC_WARN genwarning(lex_ctx ctx, int warntype, const char *fmt, ...)
132 int lvl = LVL_WARNING;
134 if (!OPTS_WARN(warntype))
141 con_vprintmsg(lvl, ctx.file, ctx.line, "warning", fmt, ap);
147 /**********************************************************************
148 * some maths used for constant folding
151 vector vec3_add(vector a, vector b)
160 vector vec3_sub(vector a, vector b)
169 qcfloat vec3_mulvv(vector a, vector b)
171 return (a.x * b.x + a.y * b.y + a.z * b.z);
174 vector vec3_mulvf(vector a, float b)
183 /**********************************************************************
187 bool parser_next(parser_t *parser)
189 /* lex_do kills the previous token */
190 parser->tok = lex_do(parser->lex);
191 if (parser->tok == TOKEN_EOF)
193 if (parser->tok >= TOKEN_ERROR) {
194 parseerror(parser, "lex error");
200 #define parser_tokval(p) ((p)->lex->tok.value)
201 #define parser_token(p) (&((p)->lex->tok))
202 #define parser_ctx(p) ((p)->lex->tok.ctx)
204 static ast_value* parser_const_float(parser_t *parser, double d)
208 for (i = 0; i < vec_size(parser->imm_float); ++i) {
209 const double compare = parser->imm_float[i]->constval.vfloat;
210 if (memcmp((const void*)&compare, (const void *)&d, sizeof(double)) == 0)
211 return parser->imm_float[i];
213 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_FLOAT);
214 out->hasvalue = true;
215 out->constval.vfloat = d;
216 vec_push(parser->imm_float, out);
220 static ast_value* parser_const_float_0(parser_t *parser)
222 if (!parser->imm_float_zero)
223 parser->imm_float_zero = parser_const_float(parser, 0);
224 return parser->imm_float_zero;
227 static ast_value* parser_const_float_1(parser_t *parser)
229 if (!parser->imm_float_one)
230 parser->imm_float_one = parser_const_float(parser, 1);
231 return parser->imm_float_one;
234 static char *parser_strdup(const char *str)
237 /* actually dup empty strings */
238 char *out = mem_a(1);
242 return util_strdup(str);
245 static ast_value* parser_const_string(parser_t *parser, const char *str, bool dotranslate)
249 for (i = 0; i < vec_size(parser->imm_string); ++i) {
250 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
251 return parser->imm_string[i];
255 snprintf(name, sizeof(name), "dotranslate_%lu", (unsigned long)(parser->translated++));
256 out = ast_value_new(parser_ctx(parser), name, TYPE_STRING);
258 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
259 out->hasvalue = true;
260 out->constval.vstring = parser_strdup(str);
261 vec_push(parser->imm_string, out);
265 static ast_value* parser_const_vector(parser_t *parser, vector v)
269 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
270 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
271 return parser->imm_vector[i];
273 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
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 util_htget(parser->htfields, name);
301 static ast_expression* parser_find_global(parser_t *parser, const char *name)
303 return 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 = 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 '['
379 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
390 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
394 e.out = (ast_expression*)v;
401 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
403 e.etype = 1 + (op - operators);
412 static sy_elem syparen(lex_ctx ctx, int p, size_t off) {
424 # define DEBUGSHUNTDO(x) x
426 # define DEBUGSHUNTDO(x)
429 /* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
430 * so we need to rotate it to become ent.(foo[n]).
432 static bool rotate_entfield_array_index_nodes(ast_expression **out)
434 ast_array_index *index;
435 ast_entfield *entfield;
439 ast_expression *entity;
441 lex_ctx ctx = ast_ctx(*out);
443 if (!ast_istype(*out, ast_array_index))
445 index = (ast_array_index*)*out;
447 if (!ast_istype(index->array, ast_entfield))
449 entfield = (ast_entfield*)index->array;
451 if (!ast_istype(entfield->field, ast_value))
453 field = (ast_value*)entfield->field;
456 entity = entfield->entity;
460 index = ast_array_index_new(ctx, (ast_expression*)field, sub);
461 entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
462 *out = (ast_expression*)entfield;
467 static bool parser_sy_pop(parser_t *parser, shunt *sy)
471 ast_expression *out = NULL;
472 ast_expression *exprs[3];
473 ast_block *blocks[3];
474 ast_value *asvalue[3];
475 size_t i, assignop, addop, subop;
476 qcint generated_op = 0;
481 if (!vec_size(sy->ops)) {
482 parseerror(parser, "internal error: missing operator");
486 if (vec_last(sy->ops).paren) {
487 parseerror(parser, "unmatched parenthesis");
491 op = &operators[vec_last(sy->ops).etype - 1];
492 ctx = vec_last(sy->ops).ctx;
494 DEBUGSHUNTDO(con_out("apply %s\n", op->op));
496 if (vec_size(sy->out) < op->operands) {
497 parseerror(parser, "internal error: not enough operands: %i (operator %s (%i))", vec_size(sy->out),
498 op->op, (int)op->id);
502 vec_shrinkby(sy->ops, 1);
504 vec_shrinkby(sy->out, op->operands);
505 for (i = 0; i < op->operands; ++i) {
506 exprs[i] = sy->out[vec_size(sy->out)+i].out;
507 blocks[i] = sy->out[vec_size(sy->out)+i].block;
508 asvalue[i] = (ast_value*)exprs[i];
511 if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
512 parseerror(parser, "internal error: operator cannot be applied on empty blocks");
516 #define NotSameType(T) \
517 (exprs[0]->expression.vtype != exprs[1]->expression.vtype || \
518 exprs[0]->expression.vtype != T)
519 #define CanConstFold1(A) \
520 (ast_istype((A), ast_value) && ((ast_value*)(A))->hasvalue)
521 #define CanConstFold(A, B) \
522 (CanConstFold1(A) && CanConstFold1(B))
523 #define ConstV(i) (asvalue[(i)]->constval.vvec)
524 #define ConstF(i) (asvalue[(i)]->constval.vfloat)
525 #define ConstS(i) (asvalue[(i)]->constval.vstring)
529 parseerror(parser, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
533 if (exprs[0]->expression.vtype == TYPE_ENTITY) {
534 if (exprs[1]->expression.vtype != TYPE_FIELD) {
535 parseerror(parser, "type error: right hand of member-operand should be an entity-field");
538 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
540 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
541 parseerror(parser, "internal error: vector access is not supposed to be handled at this point");
545 parseerror(parser, "type error: member-of operator on something that is not an entity or vector");
551 if (exprs[0]->expression.vtype != TYPE_ARRAY &&
552 !(exprs[0]->expression.vtype == TYPE_FIELD &&
553 exprs[0]->expression.next->expression.vtype == TYPE_ARRAY))
555 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
556 parseerror(parser, "cannot index value of type %s", ty1);
559 if (exprs[1]->expression.vtype != TYPE_FLOAT) {
560 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
561 parseerror(parser, "index must be of type float, not %s", ty1);
564 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
565 if (rotate_entfield_array_index_nodes(&out))
567 if (opts_standard != COMPILER_GMQCC) {
568 /* this error doesn't need to make us bail out */
569 (void)!parsewarning(parser, WARN_EXTENSIONS,
570 "accessing array-field members of an entity without parenthesis\n"
571 " -> this is an extension from -std=gmqcc");
578 ast_block_add_expr(blocks[0], exprs[1]);
580 blocks[0] = ast_block_new(ctx);
581 ast_block_add_expr(blocks[0], exprs[0]);
582 ast_block_add_expr(blocks[0], exprs[1]);
584 if (!ast_block_set_type(blocks[0], exprs[1]))
587 vec_push(sy->out, syblock(ctx, blocks[0]));
591 switch (exprs[0]->expression.vtype) {
593 if (CanConstFold1(exprs[0]))
594 out = (ast_expression*)parser_const_float(parser, -ConstF(0));
596 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
597 (ast_expression*)parser_const_float_0(parser),
601 if (CanConstFold1(exprs[0]))
602 out = (ast_expression*)parser_const_vector_f(parser,
603 -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
605 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
606 (ast_expression*)parser_const_vector_0(parser),
610 parseerror(parser, "invalid types used in expression: cannot negate type %s",
611 type_name[exprs[0]->expression.vtype]);
617 switch (exprs[0]->expression.vtype) {
619 if (CanConstFold1(exprs[0]))
620 out = (ast_expression*)parser_const_float(parser, !ConstF(0));
622 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
625 if (CanConstFold1(exprs[0]))
626 out = (ast_expression*)parser_const_float(parser,
627 (!ConstV(0).x && !ConstV(0).y && !ConstV(0).z));
629 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
632 if (CanConstFold1(exprs[0]))
633 out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
635 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
637 /* we don't constant-fold NOT for these types */
639 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
642 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
645 parseerror(parser, "invalid types used in expression: cannot logically negate type %s",
646 type_name[exprs[0]->expression.vtype]);
652 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
653 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
655 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
656 type_name[exprs[0]->expression.vtype],
657 type_name[exprs[1]->expression.vtype]);
660 switch (exprs[0]->expression.vtype) {
662 if (CanConstFold(exprs[0], exprs[1]))
664 out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
667 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
670 if (CanConstFold(exprs[0], exprs[1]))
671 out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
673 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
676 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
677 type_name[exprs[0]->expression.vtype],
678 type_name[exprs[1]->expression.vtype]);
683 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
684 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
686 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
687 type_name[exprs[1]->expression.vtype],
688 type_name[exprs[0]->expression.vtype]);
691 switch (exprs[0]->expression.vtype) {
693 if (CanConstFold(exprs[0], exprs[1]))
694 out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
696 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
699 if (CanConstFold(exprs[0], exprs[1]))
700 out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
702 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
705 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
706 type_name[exprs[1]->expression.vtype],
707 type_name[exprs[0]->expression.vtype]);
712 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
713 exprs[0]->expression.vtype != TYPE_VECTOR &&
714 exprs[0]->expression.vtype != TYPE_FLOAT &&
715 exprs[1]->expression.vtype != TYPE_VECTOR &&
716 exprs[1]->expression.vtype != TYPE_FLOAT)
718 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
719 type_name[exprs[1]->expression.vtype],
720 type_name[exprs[0]->expression.vtype]);
723 switch (exprs[0]->expression.vtype) {
725 if (exprs[1]->expression.vtype == TYPE_VECTOR)
727 if (CanConstFold(exprs[0], exprs[1]))
728 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
730 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
734 if (CanConstFold(exprs[0], exprs[1]))
735 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
737 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
741 if (exprs[1]->expression.vtype == TYPE_FLOAT)
743 if (CanConstFold(exprs[0], exprs[1]))
744 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
746 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
750 if (CanConstFold(exprs[0], exprs[1]))
751 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
753 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
757 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
758 type_name[exprs[1]->expression.vtype],
759 type_name[exprs[0]->expression.vtype]);
764 if (NotSameType(TYPE_FLOAT)) {
765 parseerror(parser, "invalid types used in expression: cannot divide types %s and %s",
766 type_name[exprs[0]->expression.vtype],
767 type_name[exprs[1]->expression.vtype]);
770 if (CanConstFold(exprs[0], exprs[1]))
771 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
773 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
777 parseerror(parser, "qc does not have a modulo operator");
781 if (NotSameType(TYPE_FLOAT)) {
782 parseerror(parser, "invalid types used in expression: cannot perform bit operations between types %s and %s",
783 type_name[exprs[0]->expression.vtype],
784 type_name[exprs[1]->expression.vtype]);
787 if (CanConstFold(exprs[0], exprs[1]))
788 out = (ast_expression*)parser_const_float(parser,
789 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
790 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
792 out = (ast_expression*)ast_binary_new(ctx,
793 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
797 parseerror(parser, "TODO: bitxor");
802 case opid3('<','<','='):
803 case opid3('>','>','='):
804 parseerror(parser, "TODO: shifts");
808 generated_op += 1; /* INSTR_OR */
810 generated_op += INSTR_AND;
812 if (NotSameType(TYPE_FLOAT)) {
813 parseerror(parser, "invalid types used in expression: cannot perform logical operations between types %s and %s",
814 type_name[exprs[0]->expression.vtype],
815 type_name[exprs[1]->expression.vtype]);
816 parseerror(parser, "TODO: logical ops for arbitrary types using INSTR_NOT");
817 parseerror(parser, "TODO: optional early out");
821 if (opts_standard == COMPILER_GMQCC)
822 con_out("TODO: early out logic\n");
823 if (CanConstFold(exprs[0], exprs[1]))
824 out = (ast_expression*)parser_const_float(parser,
825 (generated_op == INSTR_OR ? (ConstF(0) || ConstF(1)) : (ConstF(0) && ConstF(1))));
827 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
831 if (exprs[1]->expression.vtype != exprs[2]->expression.vtype) {
832 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
833 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
834 parseerror(parser, "iperands of ternary expression must have the same type, got %s and %s", ty1, ty2);
837 if (CanConstFold1(exprs[0]))
838 out = (ConstF(0) ? exprs[1] : exprs[2]);
840 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
844 generated_op += 1; /* INSTR_GT */
846 generated_op += 1; /* INSTR_LT */
847 case opid2('>', '='):
848 generated_op += 1; /* INSTR_GE */
849 case opid2('<', '='):
850 generated_op += INSTR_LE;
851 if (NotSameType(TYPE_FLOAT)) {
852 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
853 type_name[exprs[0]->expression.vtype],
854 type_name[exprs[1]->expression.vtype]);
857 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
859 case opid2('!', '='):
860 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
861 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
862 type_name[exprs[0]->expression.vtype],
863 type_name[exprs[1]->expression.vtype]);
866 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
868 case opid2('=', '='):
869 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
870 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
871 type_name[exprs[0]->expression.vtype],
872 type_name[exprs[1]->expression.vtype]);
875 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
879 if (ast_istype(exprs[0], ast_entfield)) {
880 ast_expression *field = ((ast_entfield*)exprs[0])->field;
881 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
882 exprs[0]->expression.vtype == TYPE_FIELD &&
883 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
885 assignop = type_storep_instr[TYPE_VECTOR];
888 assignop = type_storep_instr[exprs[0]->expression.vtype];
889 if (!ast_compare_type(field->expression.next, exprs[1])) {
890 ast_type_to_string(field->expression.next, ty1, sizeof(ty1));
891 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
892 if (opts_standard == COMPILER_QCC &&
893 field->expression.next->expression.vtype == TYPE_FUNCTION &&
894 exprs[1]->expression.vtype == TYPE_FUNCTION)
896 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
897 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
903 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
908 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
909 exprs[0]->expression.vtype == TYPE_FIELD &&
910 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
912 assignop = type_store_instr[TYPE_VECTOR];
915 assignop = type_store_instr[exprs[0]->expression.vtype];
918 if (assignop == AINSTR_END) {
919 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
920 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
921 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
923 else if (!ast_compare_type(exprs[0], exprs[1])) {
924 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
925 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
926 if (opts_standard == COMPILER_QCC &&
927 exprs[0]->expression.vtype == TYPE_FUNCTION &&
928 exprs[1]->expression.vtype == TYPE_FUNCTION)
930 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
931 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
937 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
940 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
942 case opid3('+','+','P'):
943 case opid3('-','-','P'):
945 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
946 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
947 parseerror(parser, "invalid type for prefix increment: %s", ty1);
950 if (op->id == opid3('+','+','P'))
954 if (ast_istype(exprs[0], ast_entfield)) {
955 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
957 (ast_expression*)parser_const_float_1(parser));
959 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
961 (ast_expression*)parser_const_float_1(parser));
964 case opid3('S','+','+'):
965 case opid3('S','-','-'):
967 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
968 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
969 parseerror(parser, "invalid type for suffix increment: %s", ty1);
972 if (op->id == opid3('S','+','+')) {
979 if (ast_istype(exprs[0], ast_entfield)) {
980 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
982 (ast_expression*)parser_const_float_1(parser));
984 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
986 (ast_expression*)parser_const_float_1(parser));
990 out = (ast_expression*)ast_binary_new(ctx, subop,
992 (ast_expression*)parser_const_float_1(parser));
996 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
997 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
999 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1000 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1001 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1005 if (ast_istype(exprs[0], ast_entfield))
1006 assignop = type_storep_instr[exprs[0]->expression.vtype];
1008 assignop = type_store_instr[exprs[0]->expression.vtype];
1009 switch (exprs[0]->expression.vtype) {
1011 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1012 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
1013 exprs[0], exprs[1]);
1016 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1017 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1018 exprs[0], exprs[1]);
1021 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1022 type_name[exprs[0]->expression.vtype],
1023 type_name[exprs[1]->expression.vtype]);
1027 case opid2('*','='):
1028 case opid2('/','='):
1029 if (exprs[1]->expression.vtype != TYPE_FLOAT ||
1030 !(exprs[0]->expression.vtype == TYPE_FLOAT ||
1031 exprs[0]->expression.vtype == TYPE_VECTOR))
1033 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1034 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1035 parseerror(parser, "invalid types used in expression: %s and %s",
1039 if (ast_istype(exprs[0], ast_entfield))
1040 assignop = type_storep_instr[exprs[0]->expression.vtype];
1042 assignop = type_store_instr[exprs[0]->expression.vtype];
1043 switch (exprs[0]->expression.vtype) {
1045 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1046 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1047 exprs[0], exprs[1]);
1050 if (op->id == opid2('*','=')) {
1051 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1052 exprs[0], exprs[1]);
1054 /* there's no DIV_VF */
1055 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
1056 (ast_expression*)parser_const_float_1(parser),
1060 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1065 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1066 type_name[exprs[0]->expression.vtype],
1067 type_name[exprs[1]->expression.vtype]);
1071 case opid2('&','='):
1072 case opid2('|','='):
1073 if (NotSameType(TYPE_FLOAT)) {
1074 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1075 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1076 parseerror(parser, "invalid types used in expression: %s and %s",
1080 if (ast_istype(exprs[0], ast_entfield))
1081 assignop = type_storep_instr[exprs[0]->expression.vtype];
1083 assignop = type_store_instr[exprs[0]->expression.vtype];
1084 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1085 (op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1086 exprs[0], exprs[1]);
1088 case opid3('&','~','='):
1089 /* This is like: a &= ~(b);
1090 * But QC has no bitwise-not, so we implement it as
1093 if (NotSameType(TYPE_FLOAT)) {
1094 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1095 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1096 parseerror(parser, "invalid types used in expression: %s and %s",
1100 if (ast_istype(exprs[0], ast_entfield))
1101 assignop = type_storep_instr[exprs[0]->expression.vtype];
1103 assignop = type_store_instr[exprs[0]->expression.vtype];
1104 out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1107 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1113 parseerror(parser, "failed to apply operand %s", op->op);
1117 DEBUGSHUNTDO(con_out("applied %s\n", op->op));
1118 vec_push(sy->out, syexp(ctx, out));
1122 static bool parser_close_call(parser_t *parser, shunt *sy)
1124 /* was a function call */
1125 ast_expression *fun;
1131 vec_shrinkby(sy->ops, 1);
1132 fid = sy->ops[vec_size(sy->ops)].off;
1134 /* out[fid] is the function
1135 * everything above is parameters...
1136 * 0 params = nothing
1137 * 1 params = ast_expression
1141 if (vec_size(sy->out) < 1 || vec_size(sy->out) <= fid) {
1142 parseerror(parser, "internal error: function call needs function and parameter list...");
1146 fun = sy->out[fid].out;
1148 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1150 parseerror(parser, "out of memory");
1154 if (fid+1 == vec_size(sy->out)) {
1157 } else if (fid+2 == vec_size(sy->out)) {
1159 vec_shrinkby(sy->out, 1);
1160 params = sy->out[vec_size(sy->out)].block;
1164 vec_push(call->params, sy->out[vec_size(sy->out)].out);
1166 paramcount = vec_size(params->exprs);
1167 call->params = params->exprs;
1168 params->exprs = NULL;
1171 if (!ast_call_check_types(call))
1174 parseerror(parser, "invalid function call");
1178 /* overwrite fid, the function, with a call */
1179 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1181 if (fun->expression.vtype != TYPE_FUNCTION) {
1182 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
1186 if (!fun->expression.next) {
1187 parseerror(parser, "could not determine function return type");
1190 if (vec_size(fun->expression.params) != paramcount &&
1191 !(fun->expression.variadic &&
1192 vec_size(fun->expression.params) < paramcount))
1195 const char *fewmany = (vec_size(fun->expression.params) > paramcount) ? "few" : "many";
1197 fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1198 if (opts_standard == COMPILER_GMQCC)
1201 parseerror(parser, "too %s parameters for call to %s: expected %i, got %i\n"
1202 " -> `%s` has been declared here: %s:%i",
1203 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1204 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1206 parseerror(parser, "too %s parameters for function call: expected %i, got %i\n"
1207 " -> `%s` has been declared here: %s:%i",
1208 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1209 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1215 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1216 "too %s parameters for call to %s: expected %i, got %i\n"
1217 " -> `%s` has been declared here: %s:%i",
1218 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1219 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1221 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1222 "too %s parameters for function call: expected %i, got %i\n"
1223 " -> `%s` has been declared here: %s:%i",
1224 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1225 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1233 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
1235 if (!vec_size(sy->ops)) {
1236 parseerror(parser, "unmatched closing paren");
1239 /* this would for bit a + (x) because there are no operators inside (x)
1240 if (sy->ops[vec_size(sy->ops)-1].paren == 1) {
1241 parseerror(parser, "empty parenthesis expression");
1245 while (vec_size(sy->ops)) {
1246 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_FUNC) {
1247 if (!parser_close_call(parser, sy))
1251 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_EXPR) {
1252 vec_shrinkby(sy->ops, 1);
1253 return !functions_only;
1255 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_INDEX) {
1258 /* pop off the parenthesis */
1259 vec_shrinkby(sy->ops, 1);
1260 /* then apply the index operator */
1261 if (!parser_sy_pop(parser, sy))
1265 if (!parser_sy_pop(parser, sy))
1271 static void parser_reclassify_token(parser_t *parser)
1274 for (i = 0; i < operator_count; ++i) {
1275 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1276 parser->tok = TOKEN_OPERATOR;
1282 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma)
1284 ast_expression *expr = NULL;
1286 bool wantop = false;
1287 bool gotmemberof = false;
1289 /* count the parens because an if starts with one, so the
1290 * end of a condition is an unmatched closing paren
1298 parser->lex->flags.noops = false;
1300 parser_reclassify_token(parser);
1305 gotmemberof = false;
1307 parser->memberof = 0;
1309 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1310 parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "_"))
1312 /* a translatable string */
1316 parseerror(parser, "expected operator or end of statement, got constant");
1320 parser->lex->flags.noops = true;
1321 if (!parser_next(parser) || parser->tok != '(') {
1322 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1325 parser->lex->flags.noops = false;
1326 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1327 parseerror(parser, "expected a constant string in translatable-string extension");
1330 val = parser_const_string(parser, parser_tokval(parser), true);
1334 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1335 DEBUGSHUNTDO(con_out("push string\n"));
1337 if (!parser_next(parser) || parser->tok != ')') {
1338 parseerror(parser, "expected closing paren after translatable string");
1342 else if (parser->tok == TOKEN_IDENT)
1344 ast_expression *var;
1346 parseerror(parser, "expected operator or end of statement");
1351 if (opts_standard == COMPILER_GMQCC)
1353 if (parser->memberof == TYPE_ENTITY) {
1354 /* still get vars first since there could be a fieldpointer */
1355 var = parser_find_var(parser, parser_tokval(parser));
1357 var = parser_find_field(parser, parser_tokval(parser));
1359 else if (parser->memberof == TYPE_VECTOR)
1361 parseerror(parser, "TODO: implement effective vector member access");
1364 else if (parser->memberof) {
1365 parseerror(parser, "namespace for member not found");
1369 var = parser_find_var(parser, parser_tokval(parser));
1371 var = parser_find_var(parser, parser_tokval(parser));
1373 var = parser_find_field(parser, parser_tokval(parser));
1376 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1379 if (ast_istype(var, ast_value))
1380 ((ast_value*)var)->uses++;
1381 vec_push(sy.out, syexp(parser_ctx(parser), var));
1382 DEBUGSHUNTDO(con_out("push %s\n", parser_tokval(parser)));
1384 else if (parser->tok == TOKEN_FLOATCONST) {
1387 parseerror(parser, "expected operator or end of statement, got constant");
1391 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1394 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1395 DEBUGSHUNTDO(con_out("push %g\n", parser_token(parser)->constval.f));
1397 else if (parser->tok == TOKEN_INTCONST) {
1400 parseerror(parser, "expected operator or end of statement, got constant");
1404 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1407 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1408 DEBUGSHUNTDO(con_out("push %i\n", parser_token(parser)->constval.i));
1410 else if (parser->tok == TOKEN_STRINGCONST) {
1413 parseerror(parser, "expected operator or end of statement, got constant");
1417 val = parser_const_string(parser, parser_tokval(parser), false);
1420 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1421 DEBUGSHUNTDO(con_out("push string\n"));
1423 else if (parser->tok == TOKEN_VECTORCONST) {
1426 parseerror(parser, "expected operator or end of statement, got constant");
1430 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1433 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1434 DEBUGSHUNTDO(con_out("push '%g %g %g'\n",
1435 parser_token(parser)->constval.v.x,
1436 parser_token(parser)->constval.v.y,
1437 parser_token(parser)->constval.v.z));
1439 else if (parser->tok == '(') {
1440 parseerror(parser, "internal error: '(' should be classified as operator");
1443 else if (parser->tok == '[') {
1444 parseerror(parser, "internal error: '[' should be classified as operator");
1447 else if (parser->tok == ')') {
1449 DEBUGSHUNTDO(con_out("do[op] )\n"));
1453 /* we do expect an operator next */
1454 /* closing an opening paren */
1455 if (!parser_close_paren(parser, &sy, false))
1458 DEBUGSHUNTDO(con_out("do[nop] )\n"));
1462 /* allowed for function calls */
1463 if (!parser_close_paren(parser, &sy, true))
1468 else if (parser->tok == ']') {
1470 parseerror(parser, "operand expected");
1474 if (!parser_close_paren(parser, &sy, false))
1478 else if (parser->tok != TOKEN_OPERATOR) {
1480 parseerror(parser, "expected operator or end of statement");
1487 /* classify the operator */
1488 const oper_info *op;
1489 const oper_info *olast = NULL;
1491 for (o = 0; o < operator_count; ++o) {
1492 if ((!(operators[o].flags & OP_PREFIX) == wantop) &&
1493 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1494 !strcmp(parser_tokval(parser), operators[o].op))
1499 if (o == operator_count) {
1500 /* no operator found... must be the end of the statement */
1503 /* found an operator */
1506 /* when declaring variables, a comma starts a new variable */
1507 if (op->id == opid1(',') && !parens && stopatcomma) {
1508 /* fixup the token */
1513 /* a colon without a pervious question mark cannot be a ternary */
1514 if (!ternaries && op->id == opid2(':','?')) {
1519 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1520 olast = &operators[vec_last(sy.ops).etype-1];
1523 (op->prec < olast->prec) ||
1524 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1526 if (!parser_sy_pop(parser, &sy))
1528 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1529 olast = &operators[vec_last(sy.ops).etype-1];
1534 if (op->id == opid1('.') && opts_standard == COMPILER_GMQCC) {
1535 /* for gmqcc standard: open up the namespace of the previous type */
1536 ast_expression *prevex = vec_last(sy.out).out;
1538 parseerror(parser, "unexpected member operator");
1541 if (prevex->expression.vtype == TYPE_ENTITY)
1542 parser->memberof = TYPE_ENTITY;
1543 else if (prevex->expression.vtype == TYPE_VECTOR)
1544 parser->memberof = TYPE_VECTOR;
1546 parseerror(parser, "type error: type has no members");
1552 if (op->id == opid1('(')) {
1554 size_t sycount = vec_size(sy.out);
1555 DEBUGSHUNTDO(con_out("push [op] (\n"));
1557 /* we expected an operator, this is the function-call operator */
1558 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_FUNC, sycount-1));
1561 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_EXPR, 0));
1562 DEBUGSHUNTDO(con_out("push [nop] (\n"));
1565 } else if (op->id == opid1('[')) {
1567 parseerror(parser, "unexpected array subscript");
1571 /* push both the operator and the paren, this makes life easier */
1572 vec_push(sy.ops, syop(parser_ctx(parser), op));
1573 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_INDEX, 0));
1575 } else if (op->id == opid2('?',':')) {
1577 vec_push(sy.ops, syop(parser_ctx(parser), op));
1580 } else if (op->id == opid2(':','?')) {
1581 /* we don't push this operator */
1585 DEBUGSHUNTDO(con_out("push operator %s\n", op->op));
1586 vec_push(sy.ops, syop(parser_ctx(parser), op));
1587 wantop = !!(op->flags & OP_SUFFIX);
1590 if (!parser_next(parser)) {
1593 if (parser->tok == ';' ||
1594 (!parens && parser->tok == ']'))
1600 while (vec_size(sy.ops)) {
1601 if (!parser_sy_pop(parser, &sy))
1605 parser->lex->flags.noops = true;
1606 if (!vec_size(sy.out)) {
1607 parseerror(parser, "empty expression");
1610 expr = sy.out[0].out;
1613 DEBUGSHUNTDO(con_out("shunt done\n"));
1617 parser->lex->flags.noops = true;
1623 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma)
1625 ast_expression *e = parse_expression_leave(parser, stopatcomma);
1628 if (!parser_next(parser)) {
1635 static void parser_enterblock(parser_t *parser)
1637 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
1638 vec_push(parser->_blocklocals, vec_size(parser->_locals));
1639 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
1640 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
1643 static bool parser_leaveblock(parser_t *parser)
1646 size_t locals, typedefs;
1648 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
1649 parseerror(parser, "internal error: parser_leaveblock with no block");
1653 util_htdel(vec_last(parser->variables));
1654 vec_pop(parser->variables);
1655 if (!vec_size(parser->_blocklocals)) {
1656 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
1660 locals = vec_last(parser->_blocklocals);
1661 vec_pop(parser->_blocklocals);
1662 while (vec_size(parser->_locals) != locals) {
1663 ast_expression *e = vec_last(parser->_locals);
1664 ast_value *v = (ast_value*)e;
1665 vec_pop(parser->_locals);
1666 if (ast_istype(e, ast_value) && !v->uses) {
1667 if (parsewarning(parser, WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name))
1672 typedefs = vec_last(parser->_blocktypedefs);
1673 while (vec_size(parser->_typedefs) != typedefs) {
1674 ast_delete(vec_last(parser->_typedefs));
1675 vec_pop(parser->_typedefs);
1677 util_htdel(vec_last(parser->typedefs));
1678 vec_pop(parser->typedefs);
1683 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
1685 vec_push(parser->_locals, e);
1686 util_htset(vec_last(parser->variables), name, (void*)e);
1689 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
1692 ast_expression *cond, *ontrue, *onfalse = NULL;
1695 lex_ctx ctx = parser_ctx(parser);
1697 (void)block; /* not touching */
1699 /* skip the 'if', parse an optional 'not' and check for an opening paren */
1700 if (!parser_next(parser)) {
1701 parseerror(parser, "expected condition or 'not'");
1704 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
1706 if (!parser_next(parser)) {
1707 parseerror(parser, "expected condition in parenthesis");
1711 if (parser->tok != '(') {
1712 parseerror(parser, "expected 'if' condition in parenthesis");
1715 /* parse into the expression */
1716 if (!parser_next(parser)) {
1717 parseerror(parser, "expected 'if' condition after opening paren");
1720 /* parse the condition */
1721 cond = parse_expression_leave(parser, false);
1725 if (parser->tok != ')') {
1726 parseerror(parser, "expected closing paren after 'if' condition");
1730 /* parse into the 'then' branch */
1731 if (!parser_next(parser)) {
1732 parseerror(parser, "expected statement for on-true branch of 'if'");
1736 ontrue = parse_statement_or_block(parser);
1741 /* check for an else */
1742 if (!strcmp(parser_tokval(parser), "else")) {
1743 /* parse into the 'else' branch */
1744 if (!parser_next(parser)) {
1745 parseerror(parser, "expected on-false branch after 'else'");
1750 onfalse = parse_statement_or_block(parser);
1759 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
1761 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
1762 *out = (ast_expression*)ifthen;
1766 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
1769 ast_expression *cond, *ontrue;
1771 lex_ctx ctx = parser_ctx(parser);
1773 (void)block; /* not touching */
1775 /* skip the 'while' and check for opening paren */
1776 if (!parser_next(parser) || parser->tok != '(') {
1777 parseerror(parser, "expected 'while' condition in parenthesis");
1780 /* parse into the expression */
1781 if (!parser_next(parser)) {
1782 parseerror(parser, "expected 'while' condition after opening paren");
1785 /* parse the condition */
1786 cond = parse_expression_leave(parser, false);
1790 if (parser->tok != ')') {
1791 parseerror(parser, "expected closing paren after 'while' condition");
1795 /* parse into the 'then' branch */
1796 if (!parser_next(parser)) {
1797 parseerror(parser, "expected while-loop body");
1801 ontrue = parse_statement_or_block(parser);
1807 aloop = ast_loop_new(ctx, NULL, cond, NULL, NULL, ontrue);
1808 *out = (ast_expression*)aloop;
1812 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
1815 ast_expression *cond, *ontrue;
1817 lex_ctx ctx = parser_ctx(parser);
1819 (void)block; /* not touching */
1821 /* skip the 'do' and get the body */
1822 if (!parser_next(parser)) {
1823 parseerror(parser, "expected loop body");
1826 ontrue = parse_statement_or_block(parser);
1830 /* expect the "while" */
1831 if (parser->tok != TOKEN_KEYWORD ||
1832 strcmp(parser_tokval(parser), "while"))
1834 parseerror(parser, "expected 'while' and condition");
1839 /* skip the 'while' and check for opening paren */
1840 if (!parser_next(parser) || parser->tok != '(') {
1841 parseerror(parser, "expected 'while' condition in parenthesis");
1845 /* parse into the expression */
1846 if (!parser_next(parser)) {
1847 parseerror(parser, "expected 'while' condition after opening paren");
1851 /* parse the condition */
1852 cond = parse_expression_leave(parser, false);
1856 if (parser->tok != ')') {
1857 parseerror(parser, "expected closing paren after 'while' condition");
1863 if (!parser_next(parser) || parser->tok != ';') {
1864 parseerror(parser, "expected semicolon after condition");
1870 if (!parser_next(parser)) {
1871 parseerror(parser, "parse error");
1877 aloop = ast_loop_new(ctx, NULL, NULL, cond, NULL, ontrue);
1878 *out = (ast_expression*)aloop;
1882 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
1885 ast_expression *initexpr, *cond, *increment, *ontrue;
1889 lex_ctx ctx = parser_ctx(parser);
1891 parser_enterblock(parser);
1898 /* skip the 'while' and check for opening paren */
1899 if (!parser_next(parser) || parser->tok != '(') {
1900 parseerror(parser, "expected 'for' expressions in parenthesis");
1903 /* parse into the expression */
1904 if (!parser_next(parser)) {
1905 parseerror(parser, "expected 'for' initializer after opening paren");
1910 if (parser->tok == TOKEN_IDENT)
1911 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
1913 if (typevar || parser->tok == TOKEN_TYPENAME) {
1914 if (opts_standard != COMPILER_GMQCC) {
1915 if (parsewarning(parser, WARN_EXTENSIONS,
1916 "current standard does not allow variable declarations in for-loop initializers"))
1920 parseerror(parser, "TODO: assignment of new variables to be non-const");
1922 if (!parse_variable(parser, block, true, false, typevar))
1925 else if (parser->tok != ';')
1927 initexpr = parse_expression_leave(parser, false);
1932 /* move on to condition */
1933 if (parser->tok != ';') {
1934 parseerror(parser, "expected semicolon after for-loop initializer");
1937 if (!parser_next(parser)) {
1938 parseerror(parser, "expected for-loop condition");
1942 /* parse the condition */
1943 if (parser->tok != ';') {
1944 cond = parse_expression_leave(parser, false);
1949 /* move on to incrementor */
1950 if (parser->tok != ';') {
1951 parseerror(parser, "expected semicolon after for-loop initializer");
1954 if (!parser_next(parser)) {
1955 parseerror(parser, "expected for-loop condition");
1959 /* parse the incrementor */
1960 if (parser->tok != ')') {
1961 increment = parse_expression_leave(parser, false);
1964 if (!ast_side_effects(increment)) {
1965 if (genwarning(ast_ctx(increment), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
1971 if (parser->tok != ')') {
1972 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
1975 /* parse into the 'then' branch */
1976 if (!parser_next(parser)) {
1977 parseerror(parser, "expected for-loop body");
1980 ontrue = parse_statement_or_block(parser);
1985 aloop = ast_loop_new(ctx, initexpr, cond, NULL, increment, ontrue);
1986 *out = (ast_expression*)aloop;
1988 if (!parser_leaveblock(parser))
1992 if (initexpr) ast_delete(initexpr);
1993 if (cond) ast_delete(cond);
1994 if (increment) ast_delete(increment);
1995 (void)!parser_leaveblock(parser);
1999 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2001 ast_expression *exp = NULL;
2002 ast_return *ret = NULL;
2003 ast_value *expected = parser->function->vtype;
2005 (void)block; /* not touching */
2007 if (!parser_next(parser)) {
2008 parseerror(parser, "expected return expression");
2012 if (parser->tok != ';') {
2013 exp = parse_expression(parser, false);
2017 if (exp->expression.vtype != expected->expression.next->expression.vtype) {
2018 parseerror(parser, "return with invalid expression");
2021 ret = ast_return_new(exp->expression.node.context, exp);
2027 if (!parser_next(parser))
2028 parseerror(parser, "parse error");
2029 if (expected->expression.next->expression.vtype != TYPE_VOID) {
2030 if (opts_standard != COMPILER_GMQCC)
2031 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2033 parseerror(parser, "return without value");
2035 ret = ast_return_new(parser_ctx(parser), NULL);
2037 *out = (ast_expression*)ret;
2041 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2043 lex_ctx ctx = parser_ctx(parser);
2045 (void)block; /* not touching */
2047 if (!parser_next(parser) || parser->tok != ';') {
2048 parseerror(parser, "expected semicolon");
2052 if (!parser_next(parser))
2053 parseerror(parser, "parse error");
2055 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue);
2059 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
2061 ast_expression *operand;
2063 ast_switch *switchnode;
2064 ast_switch_case swcase;
2066 lex_ctx ctx = parser_ctx(parser);
2068 (void)block; /* not touching */
2070 /* parse over the opening paren */
2071 if (!parser_next(parser) || parser->tok != '(') {
2072 parseerror(parser, "expected switch operand in parenthesis");
2076 /* parse into the expression */
2077 if (!parser_next(parser)) {
2078 parseerror(parser, "expected switch operand");
2081 /* parse the operand */
2082 operand = parse_expression_leave(parser, false);
2086 if (!OPTS_FLAG(RELAXED_SWITCH)) {
2087 opval = (ast_value*)operand;
2088 if (!ast_istype(operand, ast_value) || !opval->hasvalue) {
2089 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
2095 switchnode = ast_switch_new(ctx, operand);
2098 if (parser->tok != ')') {
2099 ast_delete(switchnode);
2100 parseerror(parser, "expected closing paren after 'switch' operand");
2104 /* parse over the opening paren */
2105 if (!parser_next(parser) || parser->tok != '{') {
2106 ast_delete(switchnode);
2107 parseerror(parser, "expected list of cases");
2111 if (!parser_next(parser)) {
2112 ast_delete(switchnode);
2113 parseerror(parser, "expected 'case' or 'default'");
2118 while (parser->tok != '}') {
2119 ast_block *caseblock;
2121 if (parser->tok != TOKEN_KEYWORD) {
2122 ast_delete(switchnode);
2123 parseerror(parser, "expected 'case' or 'default'");
2126 if (!strcmp(parser_tokval(parser), "case")) {
2127 if (!parser_next(parser)) {
2128 ast_delete(switchnode);
2129 parseerror(parser, "expected expression for case");
2132 swcase.value = parse_expression_leave(parser, false);
2133 if (!swcase.value) {
2134 ast_delete(switchnode);
2135 parseerror(parser, "expected expression for case");
2139 else if (!strcmp(parser_tokval(parser), "default")) {
2140 swcase.value = NULL;
2141 if (!parser_next(parser)) {
2142 ast_delete(switchnode);
2143 parseerror(parser, "expected colon");
2148 /* Now the colon and body */
2149 if (parser->tok != ':') {
2150 if (swcase.value) ast_unref(swcase.value);
2151 ast_delete(switchnode);
2152 parseerror(parser, "expected colon");
2156 if (!parser_next(parser)) {
2157 if (swcase.value) ast_unref(swcase.value);
2158 ast_delete(switchnode);
2159 parseerror(parser, "expected statements or case");
2162 caseblock = ast_block_new(parser_ctx(parser));
2164 if (swcase.value) ast_unref(swcase.value);
2165 ast_delete(switchnode);
2168 swcase.code = (ast_expression*)caseblock;
2169 vec_push(switchnode->cases, swcase);
2171 ast_expression *expr;
2172 if (parser->tok == '}')
2174 if (parser->tok == TOKEN_KEYWORD) {
2175 if (!strcmp(parser_tokval(parser), "case") ||
2176 !strcmp(parser_tokval(parser), "default"))
2181 if (!parse_statement(parser, caseblock, &expr, true)) {
2182 ast_delete(switchnode);
2187 ast_block_add_expr(caseblock, expr);
2192 if (parser->tok != '}') {
2193 ast_delete(switchnode);
2194 parseerror(parser, "expected closing paren of case list");
2197 if (!parser_next(parser)) {
2198 ast_delete(switchnode);
2199 parseerror(parser, "parse error after switch");
2202 *out = (ast_expression*)switchnode;
2206 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
2208 ast_value *typevar = NULL;
2209 if (parser->tok == TOKEN_IDENT)
2210 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2212 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
2214 /* local variable */
2216 parseerror(parser, "cannot declare a variable from here");
2219 if (opts_standard == COMPILER_QCC) {
2220 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
2223 if (!parse_variable(parser, block, false, false, typevar))
2228 else if (parser->tok == TOKEN_KEYWORD)
2230 if (!strcmp(parser_tokval(parser), "local"))
2233 parseerror(parser, "cannot declare a local variable here");
2236 if (!parser_next(parser)) {
2237 parseerror(parser, "expected variable declaration");
2240 if (!parse_variable(parser, block, true, false, NULL))
2245 else if (!strcmp(parser_tokval(parser), "return"))
2247 return parse_return(parser, block, out);
2249 else if (!strcmp(parser_tokval(parser), "if"))
2251 return parse_if(parser, block, out);
2253 else if (!strcmp(parser_tokval(parser), "while"))
2255 return parse_while(parser, block, out);
2257 else if (!strcmp(parser_tokval(parser), "do"))
2259 return parse_dowhile(parser, block, out);
2261 else if (!strcmp(parser_tokval(parser), "for"))
2263 if (opts_standard == COMPILER_QCC) {
2264 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
2267 return parse_for(parser, block, out);
2269 else if (!strcmp(parser_tokval(parser), "break"))
2271 return parse_break_continue(parser, block, out, false);
2273 else if (!strcmp(parser_tokval(parser), "continue"))
2275 return parse_break_continue(parser, block, out, true);
2277 else if (!strcmp(parser_tokval(parser), "switch"))
2279 return parse_switch(parser, block, out);
2281 else if (!strcmp(parser_tokval(parser), "case") ||
2282 !strcmp(parser_tokval(parser), "default"))
2285 parseerror(parser, "unexpected 'case' label");
2290 else if (!strcmp(parser_tokval(parser), "typedef"))
2292 if (!parser_next(parser)) {
2293 parseerror(parser, "expected type definition after 'typedef'");
2296 return parse_typedef(parser);
2298 parseerror(parser, "Unexpected keyword");
2301 else if (parser->tok == '{')
2304 inner = parse_block(parser, false);
2307 *out = (ast_expression*)inner;
2312 ast_expression *exp = parse_expression(parser, false);
2316 if (!ast_side_effects(exp)) {
2317 if (genwarning(ast_ctx(exp), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2324 static bool parse_block_into(parser_t *parser, ast_block *block, bool warnreturn)
2328 parser_enterblock(parser);
2330 if (!parser_next(parser)) { /* skip the '{' */
2331 parseerror(parser, "expected function body");
2335 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
2337 ast_expression *expr = NULL;
2338 if (parser->tok == '}')
2341 if (!parse_statement(parser, block, &expr, false)) {
2342 /* parseerror(parser, "parse error"); */
2348 ast_block_add_expr(block, expr);
2351 if (parser->tok != '}') {
2354 if (warnreturn && parser->function->vtype->expression.next->expression.vtype != TYPE_VOID)
2356 if (!vec_size(block->exprs) ||
2357 !ast_istype(vec_last(block->exprs), ast_return))
2359 if (parsewarning(parser, WARN_MISSING_RETURN_VALUES, "control reaches end of non-void function")) {
2365 (void)parser_next(parser);
2369 if (!parser_leaveblock(parser))
2371 return retval && !!block;
2374 static ast_block* parse_block(parser_t *parser, bool warnreturn)
2377 block = ast_block_new(parser_ctx(parser));
2380 if (!parse_block_into(parser, block, warnreturn)) {
2381 ast_block_delete(block);
2387 static ast_expression* parse_statement_or_block(parser_t *parser)
2389 ast_expression *expr = NULL;
2390 if (parser->tok == '{')
2391 return (ast_expression*)parse_block(parser, false);
2392 if (!parse_statement(parser, NULL, &expr, false))
2397 static bool create_vector_members(ast_value *var, ast_member **me)
2400 size_t len = strlen(var->name);
2402 for (i = 0; i < 3; ++i) {
2403 char *name = mem_a(len+3);
2404 memcpy(name, var->name, len);
2406 name[len+1] = 'x'+i;
2408 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
2417 do { ast_member_delete(me[--i]); } while(i);
2421 static bool parse_function_body(parser_t *parser, ast_value *var)
2423 ast_block *block = NULL;
2428 ast_expression *framenum = NULL;
2429 ast_expression *nextthink = NULL;
2430 /* None of the following have to be deleted */
2431 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
2432 ast_expression *gbl_time = NULL, *gbl_self = NULL;
2433 bool has_frame_think;
2437 has_frame_think = false;
2438 old = parser->function;
2440 if (var->expression.variadic) {
2441 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
2442 "variadic function with implementation will not be able to access additional parameters"))
2448 if (parser->tok == '[') {
2449 /* got a frame definition: [ framenum, nextthink ]
2450 * this translates to:
2451 * self.frame = framenum;
2452 * self.nextthink = time + 0.1;
2453 * self.think = nextthink;
2457 fld_think = parser_find_field(parser, "think");
2458 fld_nextthink = parser_find_field(parser, "nextthink");
2459 fld_frame = parser_find_field(parser, "frame");
2460 if (!fld_think || !fld_nextthink || !fld_frame) {
2461 parseerror(parser, "cannot use [frame,think] notation without the required fields");
2462 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
2465 gbl_time = parser_find_global(parser, "time");
2466 gbl_self = parser_find_global(parser, "self");
2467 if (!gbl_time || !gbl_self) {
2468 parseerror(parser, "cannot use [frame,think] notation without the required globals");
2469 parseerror(parser, "please declare the following globals: `time`, `self`");
2473 if (!parser_next(parser))
2476 framenum = parse_expression_leave(parser, true);
2478 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
2481 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
2482 ast_unref(framenum);
2483 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
2487 if (parser->tok != ',') {
2488 ast_unref(framenum);
2489 parseerror(parser, "expected comma after frame number in [frame,think] notation");
2490 parseerror(parser, "Got a %i\n", parser->tok);
2494 if (!parser_next(parser)) {
2495 ast_unref(framenum);
2499 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
2501 /* qc allows the use of not-yet-declared functions here
2502 * - this automatically creates a prototype */
2503 ast_value *thinkfunc;
2504 ast_expression *functype = fld_think->expression.next;
2506 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
2507 if (!thinkfunc || !ast_type_adopt(thinkfunc, functype)) {
2508 ast_unref(framenum);
2509 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
2513 if (!parser_next(parser)) {
2514 ast_unref(framenum);
2515 ast_delete(thinkfunc);
2519 vec_push(parser->globals, (ast_expression*)thinkfunc);
2520 util_htset(parser->htglobals, thinkfunc->name, thinkfunc);
2521 nextthink = (ast_expression*)thinkfunc;
2524 nextthink = parse_expression_leave(parser, true);
2526 ast_unref(framenum);
2527 parseerror(parser, "expected a think-function in [frame,think] notation");
2532 if (!ast_istype(nextthink, ast_value)) {
2533 parseerror(parser, "think-function in [frame,think] notation must be a constant");
2537 if (retval && parser->tok != ']') {
2538 parseerror(parser, "expected closing `]` for [frame,think] notation");
2542 if (retval && !parser_next(parser)) {
2546 if (retval && parser->tok != '{') {
2547 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
2552 ast_unref(nextthink);
2553 ast_unref(framenum);
2557 has_frame_think = true;
2560 block = ast_block_new(parser_ctx(parser));
2562 parseerror(parser, "failed to allocate block");
2563 if (has_frame_think) {
2564 ast_unref(nextthink);
2565 ast_unref(framenum);
2570 if (has_frame_think) {
2572 ast_expression *self_frame;
2573 ast_expression *self_nextthink;
2574 ast_expression *self_think;
2575 ast_expression *time_plus_1;
2576 ast_store *store_frame;
2577 ast_store *store_nextthink;
2578 ast_store *store_think;
2580 ctx = parser_ctx(parser);
2581 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
2582 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
2583 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
2585 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
2586 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
2588 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
2589 if (self_frame) ast_delete(self_frame);
2590 if (self_nextthink) ast_delete(self_nextthink);
2591 if (self_think) ast_delete(self_think);
2592 if (time_plus_1) ast_delete(time_plus_1);
2598 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
2599 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
2600 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
2603 ast_delete(self_frame);
2606 if (!store_nextthink) {
2607 ast_delete(self_nextthink);
2611 ast_delete(self_think);
2615 if (store_frame) ast_delete(store_frame);
2616 if (store_nextthink) ast_delete(store_nextthink);
2617 if (store_think) ast_delete(store_think);
2620 ast_block_add_expr(block, (ast_expression*)store_frame);
2621 ast_block_add_expr(block, (ast_expression*)store_nextthink);
2622 ast_block_add_expr(block, (ast_expression*)store_think);
2626 parseerror(parser, "failed to generate code for [frame,think]");
2627 ast_unref(nextthink);
2628 ast_unref(framenum);
2634 parser_enterblock(parser);
2636 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
2638 ast_value *param = var->expression.params[parami];
2641 if (param->expression.vtype != TYPE_VECTOR &&
2642 (param->expression.vtype != TYPE_FIELD ||
2643 param->expression.next->expression.vtype != TYPE_VECTOR))
2648 if (!create_vector_members(param, me)) {
2649 ast_block_delete(block);
2653 for (e = 0; e < 3; ++e) {
2654 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
2655 ast_block_collect(block, (ast_expression*)me[e]);
2659 func = ast_function_new(ast_ctx(var), var->name, var);
2661 parseerror(parser, "failed to allocate function for `%s`", var->name);
2662 ast_block_delete(block);
2665 vec_push(parser->functions, func);
2667 parser->function = func;
2668 if (!parse_block_into(parser, block, true)) {
2669 ast_block_delete(block);
2673 vec_push(func->blocks, block);
2675 parser->function = old;
2676 if (!parser_leaveblock(parser))
2678 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
2679 parseerror(parser, "internal error: local scopes left");
2683 if (parser->tok == ';')
2684 return parser_next(parser);
2685 else if (opts_standard == COMPILER_QCC)
2686 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
2690 vec_pop(parser->functions);
2691 ast_function_delete(func);
2692 var->constval.vfunc = NULL;
2695 (void)!parser_leaveblock(parser);
2696 parser->function = old;
2700 static ast_expression *array_accessor_split(
2705 ast_expression *left,
2706 ast_expression *right
2712 lex_ctx ctx = ast_ctx(array);
2714 if (!left || !right) {
2715 if (left) ast_delete(left);
2716 if (right) ast_delete(right);
2720 cmp = ast_binary_new(ctx, INSTR_LT,
2721 (ast_expression*)index,
2722 (ast_expression*)parser_const_float(parser, middle));
2726 parseerror(parser, "internal error: failed to create comparison for array setter");
2730 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
2732 ast_delete(cmp); /* will delete left and right */
2733 parseerror(parser, "internal error: failed to create conditional jump for array setter");
2737 return (ast_expression*)ifthen;
2740 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
2742 lex_ctx ctx = ast_ctx(array);
2744 if (from+1 == afterend) {
2745 /* set this value */
2748 ast_array_index *subscript;
2750 int assignop = type_store_instr[value->expression.vtype];
2752 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
2753 assignop = INSTR_STORE_V;
2755 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
2759 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
2761 ast_delete(subscript);
2765 block = ast_block_new(ctx);
2771 ast_block_add_expr(block, (ast_expression*)st);
2773 ret = ast_return_new(ctx, NULL);
2779 ast_block_add_expr(block, (ast_expression*)ret);
2781 return (ast_expression*)block;
2783 ast_expression *left, *right;
2784 size_t diff = afterend - from;
2785 size_t middle = from + diff/2;
2786 left = array_setter_node(parser, array, index, value, from, middle);
2787 right = array_setter_node(parser, array, index, value, middle, afterend);
2788 return array_accessor_split(parser, array, index, middle, left, right);
2792 static ast_expression *array_field_setter_node(
2801 lex_ctx ctx = ast_ctx(array);
2803 if (from+1 == afterend) {
2804 /* set this value */
2807 ast_entfield *entfield;
2808 ast_array_index *subscript;
2810 int assignop = type_storep_instr[value->expression.vtype];
2812 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
2813 assignop = INSTR_STOREP_V;
2815 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
2819 entfield = ast_entfield_new_force(ctx,
2820 (ast_expression*)entity,
2821 (ast_expression*)subscript,
2822 (ast_expression*)subscript);
2824 ast_delete(subscript);
2828 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
2830 ast_delete(entfield);
2834 block = ast_block_new(ctx);
2840 ast_block_add_expr(block, (ast_expression*)st);
2842 ret = ast_return_new(ctx, NULL);
2848 ast_block_add_expr(block, (ast_expression*)ret);
2850 return (ast_expression*)block;
2852 ast_expression *left, *right;
2853 size_t diff = afterend - from;
2854 size_t middle = from + diff/2;
2855 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
2856 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
2857 return array_accessor_split(parser, array, index, middle, left, right);
2861 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
2863 lex_ctx ctx = ast_ctx(array);
2865 if (from+1 == afterend) {
2867 ast_array_index *subscript;
2869 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
2873 ret = ast_return_new(ctx, (ast_expression*)subscript);
2875 ast_delete(subscript);
2879 return (ast_expression*)ret;
2881 ast_expression *left, *right;
2882 size_t diff = afterend - from;
2883 size_t middle = from + diff/2;
2884 left = array_getter_node(parser, array, index, from, middle);
2885 right = array_getter_node(parser, array, index, middle, afterend);
2886 return array_accessor_split(parser, array, index, middle, left, right);
2890 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
2892 ast_function *func = NULL;
2893 ast_value *fval = NULL;
2894 ast_block *body = NULL;
2896 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
2898 parseerror(parser, "failed to create accessor function value");
2902 func = ast_function_new(ast_ctx(array), funcname, fval);
2905 parseerror(parser, "failed to create accessor function node");
2909 body = ast_block_new(ast_ctx(array));
2911 parseerror(parser, "failed to create block for array accessor");
2917 vec_push(func->blocks, body);
2920 vec_push(parser->accessors, fval);
2925 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
2927 ast_expression *root = NULL;
2928 ast_value *index = NULL;
2929 ast_value *value = NULL;
2933 if (!ast_istype(array->expression.next, ast_value)) {
2934 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
2938 if (!parser_create_array_accessor(parser, array, funcname, &fval))
2940 func = fval->constval.vfunc;
2941 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
2943 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
2944 value = ast_value_copy((ast_value*)array->expression.next);
2946 if (!index || !value) {
2947 parseerror(parser, "failed to create locals for array accessor");
2950 (void)!ast_value_set_name(value, "value"); /* not important */
2951 vec_push(fval->expression.params, index);
2952 vec_push(fval->expression.params, value);
2954 root = array_setter_node(parser, array, index, value, 0, array->expression.count);
2956 parseerror(parser, "failed to build accessor search tree");
2960 ast_block_add_expr(func->blocks[0], root);
2961 array->setter = fval;
2964 if (index) ast_delete(index);
2965 if (value) ast_delete(value);
2966 if (root) ast_delete(root);
2972 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
2974 ast_expression *root = NULL;
2975 ast_value *entity = NULL;
2976 ast_value *index = NULL;
2977 ast_value *value = NULL;
2981 if (!ast_istype(array->expression.next, ast_value)) {
2982 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
2986 if (!parser_create_array_accessor(parser, array, funcname, &fval))
2988 func = fval->constval.vfunc;
2989 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
2991 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
2992 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
2993 value = ast_value_copy((ast_value*)array->expression.next);
2994 if (!entity || !index || !value) {
2995 parseerror(parser, "failed to create locals for array accessor");
2998 (void)!ast_value_set_name(value, "value"); /* not important */
2999 vec_push(fval->expression.params, entity);
3000 vec_push(fval->expression.params, index);
3001 vec_push(fval->expression.params, value);
3003 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
3005 parseerror(parser, "failed to build accessor search tree");
3009 ast_block_add_expr(func->blocks[0], root);
3010 array->setter = fval;
3013 if (entity) ast_delete(entity);
3014 if (index) ast_delete(index);
3015 if (value) ast_delete(value);
3016 if (root) ast_delete(root);
3022 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
3024 ast_expression *root = NULL;
3025 ast_value *index = NULL;
3029 /* NOTE: checking array->expression.next rather than elemtype since
3030 * for fields elemtype is a temporary fieldtype.
3032 if (!ast_istype(array->expression.next, ast_value)) {
3033 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3037 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3039 func = fval->constval.vfunc;
3040 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
3042 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3045 parseerror(parser, "failed to create locals for array accessor");
3048 vec_push(fval->expression.params, index);
3050 root = array_getter_node(parser, array, index, 0, array->expression.count);
3052 parseerror(parser, "failed to build accessor search tree");
3056 ast_block_add_expr(func->blocks[0], root);
3057 array->getter = fval;
3060 if (index) ast_delete(index);
3061 if (root) ast_delete(root);
3067 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
3068 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
3076 bool variadic = false;
3078 ctx = parser_ctx(parser);
3080 /* for the sake of less code we parse-in in this function */
3081 if (!parser_next(parser)) {
3082 parseerror(parser, "expected parameter list");
3088 /* parse variables until we hit a closing paren */
3089 while (parser->tok != ')') {
3091 /* there must be commas between them */
3092 if (parser->tok != ',') {
3093 parseerror(parser, "expected comma or end of parameter list");
3096 if (!parser_next(parser)) {
3097 parseerror(parser, "expected parameter");
3103 if (parser->tok == TOKEN_DOTS) {
3104 /* '...' indicates a varargs function */
3106 if (!parser_next(parser)) {
3107 parseerror(parser, "expected parameter");
3110 if (parser->tok != ')') {
3111 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
3117 /* for anything else just parse a typename */
3118 param = parse_typename(parser, NULL, NULL);
3121 vec_push(params, param);
3122 if (param->expression.vtype >= TYPE_VARIANT) {
3123 char typename[1024];
3124 ast_type_to_string((ast_expression*)param, typename, sizeof(typename));
3125 parseerror(parser, "type not supported as part of a parameter list: %s", typename);
3132 if (vec_size(params) > 8 && opts_standard == COMPILER_QCC)
3133 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
3136 if (!parser_next(parser)) {
3137 parseerror(parser, "parse error after typename");
3141 /* now turn 'var' into a function type */
3142 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
3143 fval->expression.next = (ast_expression*)var;
3144 fval->expression.variadic = variadic;
3147 var->expression.params = params;
3154 for (i = 0; i < vec_size(params); ++i)
3155 ast_delete(params[i]);
3160 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
3162 ast_expression *cexp;
3163 ast_value *cval, *tmp;
3166 ctx = parser_ctx(parser);
3168 if (!parser_next(parser)) {
3170 parseerror(parser, "expected array-size");
3174 cexp = parse_expression_leave(parser, true);
3176 if (!cexp || !ast_istype(cexp, ast_value)) {
3180 parseerror(parser, "expected array-size as constant positive integer");
3183 cval = (ast_value*)cexp;
3185 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
3186 tmp->expression.next = (ast_expression*)var;
3189 if (cval->expression.vtype == TYPE_INTEGER)
3190 tmp->expression.count = cval->constval.vint;
3191 else if (cval->expression.vtype == TYPE_FLOAT)
3192 tmp->expression.count = cval->constval.vfloat;
3196 parseerror(parser, "array-size must be a positive integer constant");
3201 if (parser->tok != ']') {
3203 parseerror(parser, "expected ']' after array-size");
3206 if (!parser_next(parser)) {
3208 parseerror(parser, "error after parsing array size");
3214 /* Parse a complete typename.
3215 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
3216 * but when parsing variables separated by comma
3217 * 'storebase' should point to where the base-type should be kept.
3218 * The base type makes up every bit of type information which comes *before* the
3221 * The following will be parsed in its entirety:
3223 * The 'basetype' in this case is 'void()'
3224 * and if there's a comma after it, say:
3226 * then the type-information 'void()' can be stored in 'storebase'
3228 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
3230 ast_value *var, *tmp;
3233 const char *name = NULL;
3234 bool isfield = false;
3235 bool wasarray = false;
3236 size_t morefields = 0;
3238 ctx = parser_ctx(parser);
3240 /* types may start with a dot */
3241 if (parser->tok == '.') {
3243 /* if we parsed a dot we need a typename now */
3244 if (!parser_next(parser)) {
3245 parseerror(parser, "expected typename for field definition");
3249 /* Further dots are handled seperately because they won't be part of the
3252 while (parser->tok == '.') {
3254 if (!parser_next(parser)) {
3255 parseerror(parser, "expected typename for field definition");
3260 if (parser->tok == TOKEN_IDENT)
3261 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
3262 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
3263 parseerror(parser, "expected typename");
3268 /* generate the basic type value */
3269 if (cached_typedef) {
3270 var = ast_value_copy(cached_typedef);
3271 ast_value_set_name(var, "<type(from_def)>");
3273 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
3275 for (; morefields; --morefields) {
3276 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
3277 tmp->expression.next = (ast_expression*)var;
3281 /* do not yet turn into a field - remember:
3282 * .void() foo; is a field too
3283 * .void()() foo; is a function
3287 if (!parser_next(parser)) {
3289 parseerror(parser, "parse error after typename");
3293 /* an opening paren now starts the parameter-list of a function
3294 * this is where original-QC has parameter lists.
3295 * We allow a single parameter list here.
3296 * Much like fteqcc we don't allow `float()() x`
3298 if (parser->tok == '(') {
3299 var = parse_parameter_list(parser, var);
3304 /* store the base if requested */
3306 *storebase = ast_value_copy(var);
3308 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3309 tmp->expression.next = (ast_expression*)*storebase;
3314 /* there may be a name now */
3315 if (parser->tok == TOKEN_IDENT) {
3316 name = util_strdup(parser_tokval(parser));
3318 if (!parser_next(parser)) {
3320 parseerror(parser, "error after variable or field declaration");
3325 /* now this may be an array */
3326 if (parser->tok == '[') {
3328 var = parse_arraysize(parser, var);
3333 /* This is the point where we can turn it into a field */
3335 /* turn it into a field if desired */
3336 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3337 tmp->expression.next = (ast_expression*)var;
3341 /* now there may be function parens again */
3342 if (parser->tok == '(' && opts_standard == COMPILER_QCC)
3343 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3344 if (parser->tok == '(' && wasarray)
3345 parseerror(parser, "arrays as part of a return type is not supported");
3346 while (parser->tok == '(') {
3347 var = parse_parameter_list(parser, var);
3356 /* finally name it */
3358 if (!ast_value_set_name(var, name)) {
3360 parseerror(parser, "internal error: failed to set name");
3363 /* free the name, ast_value_set_name duplicates */
3370 static bool parse_typedef(parser_t *parser)
3372 ast_value *typevar, *oldtype;
3373 ast_expression *old;
3375 typevar = parse_typename(parser, NULL, NULL);
3380 if ( (old = parser_find_var(parser, typevar->name)) ) {
3381 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
3382 " -> `%s` has been declared here: %s:%i",
3383 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
3384 ast_delete(typevar);
3388 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
3389 parseerror(parser, "type `%s` has already been declared here: %s:%i",
3390 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
3391 ast_delete(typevar);
3395 vec_push(parser->_typedefs, typevar);
3396 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
3398 if (parser->tok != ';') {
3399 parseerror(parser, "expected semicolon after typedef");
3402 if (!parser_next(parser)) {
3403 parseerror(parser, "parse error after typedef");
3410 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, bool is_const, ast_value *cached_typedef)
3414 ast_expression *old;
3418 ast_value *basetype = NULL;
3420 bool isparam = false;
3421 bool isvector = false;
3422 bool cleanvar = true;
3423 bool wasarray = false;
3427 /* get the first complete variable */
3428 var = parse_typename(parser, &basetype, cached_typedef);
3431 ast_delete(basetype);
3439 /* Part 0: finish the type */
3440 if (parser->tok == '(') {
3441 if (opts_standard == COMPILER_QCC)
3442 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3443 var = parse_parameter_list(parser, var);
3449 /* we only allow 1-dimensional arrays */
3450 if (parser->tok == '[') {
3452 var = parse_arraysize(parser, var);
3458 if (parser->tok == '(' && wasarray) {
3459 parseerror(parser, "arrays as part of a return type is not supported");
3460 /* we'll still parse the type completely for now */
3462 /* for functions returning functions */
3463 while (parser->tok == '(') {
3464 if (opts_standard == COMPILER_QCC)
3465 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3466 var = parse_parameter_list(parser, var);
3474 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
3475 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
3476 * is then filled with the previous definition and the parameter-names replaced.
3479 /* Deal with end_sys_ vars */
3481 if (!strcmp(var->name, "end_sys_globals")) {
3482 parser->crc_globals = vec_size(parser->globals);
3485 else if (!strcmp(var->name, "end_sys_fields")) {
3486 parser->crc_fields = vec_size(parser->fields);
3489 if (was_end && var->expression.vtype == TYPE_FIELD) {
3490 if (parsewarning(parser, WARN_END_SYS_FIELDS,
3491 "global '%s' hint should not be a field",
3492 parser_tokval(parser)))
3499 if (!nofields && var->expression.vtype == TYPE_FIELD)
3501 /* deal with field declarations */
3502 old = parser_find_field(parser, var->name);
3504 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
3505 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
3514 parseerror(parser, "field `%s` already declared here: %s:%i",
3515 var->name, ast_ctx(old).file, ast_ctx(old).line);
3520 if (opts_standard == COMPILER_QCC &&
3521 (old = parser_find_global(parser, var->name)))
3523 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
3524 parseerror(parser, "field `%s` already declared here: %s:%i",
3525 var->name, ast_ctx(old).file, ast_ctx(old).line);
3532 /* deal with other globals */
3533 old = parser_find_global(parser, var->name);
3534 if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
3536 /* This is a function which had a prototype */
3537 if (!ast_istype(old, ast_value)) {
3538 parseerror(parser, "internal error: prototype is not an ast_value");
3542 proto = (ast_value*)old;
3543 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
3544 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
3546 ast_ctx(proto).file, ast_ctx(proto).line);
3550 /* we need the new parameter-names */
3551 for (i = 0; i < vec_size(proto->expression.params); ++i)
3552 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
3560 if (opts_standard == COMPILER_GMQCC) {
3561 parseerror(parser, "global `%s` already declared here: %s:%i",
3562 var->name, ast_ctx(old).file, ast_ctx(old).line);
3566 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
3567 "global `%s` already declared here: %s:%i",
3568 var->name, ast_ctx(old).file, ast_ctx(old).line))
3575 if (opts_standard == COMPILER_QCC &&
3576 (old = parser_find_field(parser, var->name)))
3578 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
3579 parseerror(parser, "global `%s` already declared here: %s:%i",
3580 var->name, ast_ctx(old).file, ast_ctx(old).line);
3587 else /* it's not a global */
3589 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
3590 if (old && !isparam) {
3591 parseerror(parser, "local `%s` already declared here: %s:%i",
3592 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
3596 old = parser_find_local(parser, var->name, 0, &isparam);
3597 if (old && isparam) {
3598 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
3599 "local `%s` is shadowing a parameter", var->name))
3601 parseerror(parser, "local `%s` already declared here: %s:%i",
3602 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
3606 if (opts_standard != COMPILER_GMQCC) {
3615 * Create the global/local, and deal with vector types.
3618 if (var->expression.vtype == TYPE_VECTOR)
3620 else if (var->expression.vtype == TYPE_FIELD &&
3621 var->expression.next->expression.vtype == TYPE_VECTOR)
3625 if (!create_vector_members(var, me)) {
3632 /* deal with global variables, fields, functions */
3633 if (!nofields && var->expression.vtype == TYPE_FIELD) {
3634 vec_push(parser->fields, (ast_expression*)var);
3635 util_htset(parser->htfields, var->name, var);
3637 for (i = 0; i < 3; ++i) {
3638 vec_push(parser->fields, (ast_expression*)me[i]);
3639 util_htset(parser->htfields, me[i]->name, me[i]);
3644 vec_push(parser->globals, (ast_expression*)var);
3645 util_htset(parser->htglobals, var->name, var);
3647 for (i = 0; i < 3; ++i) {
3648 vec_push(parser->globals, (ast_expression*)me[i]);
3649 util_htset(parser->htglobals, me[i]->name, me[i]);
3654 vec_push(localblock->locals, var);
3655 parser_addlocal(parser, var->name, (ast_expression*)var);
3657 for (i = 0; i < 3; ++i) {
3658 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
3659 ast_block_collect(localblock, (ast_expression*)me[i]);
3665 me[0] = me[1] = me[2] = NULL;
3670 if (var->expression.vtype == TYPE_ARRAY) {
3672 snprintf(name, sizeof(name), "%s##SET", var->name);
3673 if (!parser_create_array_setter(parser, var, name))
3675 snprintf(name, sizeof(name), "%s##GET", var->name);
3676 if (!parser_create_array_getter(parser, var, var->expression.next, name))
3679 else if (!localblock && !nofields &&
3680 var->expression.vtype == TYPE_FIELD &&
3681 var->expression.next->expression.vtype == TYPE_ARRAY)
3684 ast_expression *telem;
3686 ast_value *array = (ast_value*)var->expression.next;
3688 if (!ast_istype(var->expression.next, ast_value)) {
3689 parseerror(parser, "internal error: field element type must be an ast_value");
3693 snprintf(name, sizeof(name), "%s##SETF", var->name);
3694 if (!parser_create_array_field_setter(parser, array, name))
3697 telem = ast_type_copy(ast_ctx(var), array->expression.next);
3698 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
3699 tfield->expression.next = telem;
3700 snprintf(name, sizeof(name), "%s##GETFP", var->name);
3701 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
3709 if (parser->tok == ';') {
3710 ast_delete(basetype);
3711 if (!parser_next(parser)) {
3712 parseerror(parser, "error after variable declaration");
3718 if (parser->tok == ',')
3721 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
3722 parseerror(parser, "missing comma or semicolon while parsing variables");
3726 if (localblock && opts_standard == COMPILER_QCC) {
3727 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
3728 "initializing expression turns variable `%s` into a constant in this standard",
3735 if (parser->tok != '{') {
3736 if (parser->tok != '=') {
3737 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
3741 if (!parser_next(parser)) {
3742 parseerror(parser, "error parsing initializer");
3746 else if (opts_standard == COMPILER_QCC) {
3747 parseerror(parser, "expected '=' before function body in this standard");
3750 if (parser->tok == '#') {
3751 ast_function *func = NULL;
3754 parseerror(parser, "cannot declare builtins within functions");
3757 if (var->expression.vtype != TYPE_FUNCTION) {
3758 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
3761 if (!parser_next(parser)) {
3762 parseerror(parser, "expected builtin number");
3765 if (parser->tok != TOKEN_INTCONST) {
3766 parseerror(parser, "builtin number must be an integer constant");
3769 if (parser_token(parser)->constval.i <= 0) {
3770 parseerror(parser, "builtin number must be an integer greater than zero");
3774 if (var->hasvalue) {
3775 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
3776 "builtin `%s` has already been defined\n"
3777 " -> previous declaration here: %s:%i",
3778 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
3782 func = ast_function_new(ast_ctx(var), var->name, var);
3784 parseerror(parser, "failed to allocate function for `%s`", var->name);
3787 vec_push(parser->functions, func);
3789 func->builtin = -parser_token(parser)->constval.i;
3792 if (!parser_next(parser)) {
3793 parseerror(parser, "expected comma or semicolon");
3795 ast_function_delete(func);
3796 var->constval.vfunc = NULL;
3800 else if (parser->tok == '{' || parser->tok == '[')
3803 parseerror(parser, "cannot declare functions within functions");
3807 if (!parse_function_body(parser, var))
3809 ast_delete(basetype);
3812 ast_expression *cexp;
3815 cexp = parse_expression_leave(parser, true);
3820 cval = (ast_value*)cexp;
3821 if (!ast_istype(cval, ast_value) || !cval->hasvalue)
3822 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
3825 var->hasvalue = true;
3826 if (cval->expression.vtype == TYPE_STRING)
3827 var->constval.vstring = parser_strdup(cval->constval.vstring);
3829 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
3833 shunt sy = { NULL, NULL };
3834 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
3835 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
3836 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
3837 if (!parser_sy_pop(parser, &sy))
3840 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
3841 parseerror(parser, "internal error: leaked operands");
3842 ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out);
3850 if (parser->tok == ',') {
3851 if (!parser_next(parser)) {
3852 parseerror(parser, "expected another variable");
3856 if (parser->tok != TOKEN_IDENT) {
3857 parseerror(parser, "expected another variable");
3860 var = ast_value_copy(basetype);
3862 ast_value_set_name(var, parser_tokval(parser));
3863 if (!parser_next(parser)) {
3864 parseerror(parser, "error parsing variable declaration");
3870 if (parser->tok != ';') {
3871 parseerror(parser, "missing semicolon after variables");
3875 if (!parser_next(parser)) {
3876 parseerror(parser, "parse error after variable declaration");
3880 ast_delete(basetype);
3884 if (cleanvar && var)
3886 ast_delete(basetype);
3890 ast_delete(basetype);
3891 if (cleanvar && var)
3893 if (me[0]) ast_member_delete(me[0]);
3894 if (me[1]) ast_member_delete(me[1]);
3895 if (me[2]) ast_member_delete(me[2]);
3899 static bool parser_global_statement(parser_t *parser)
3901 ast_value *istype = NULL;
3902 if (parser->tok == TOKEN_IDENT)
3903 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
3905 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
3907 return parse_variable(parser, NULL, false, false, istype);
3909 else if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "var"))
3911 if (!strcmp(parser_tokval(parser), "var")) {
3912 if (!parser_next(parser)) {
3913 parseerror(parser, "expected variable declaration after 'var'");
3916 return parse_variable(parser, NULL, true, false, NULL);
3919 else if (parser->tok == TOKEN_KEYWORD)
3921 if (!strcmp(parser_tokval(parser), "const")) {
3922 if (!parser_next(parser)) {
3923 parseerror(parser, "expected variable declaration after 'const'");
3926 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "var")) {
3927 (void)!parsewarning(parser, WARN_CONST_VAR, "ignoring `var` after const qualifier");
3928 if (!parser_next(parser)) {
3929 parseerror(parser, "expected variable declaration after 'const var'");
3933 return parse_variable(parser, NULL, true, true, NULL);
3935 else if (!strcmp(parser_tokval(parser), "typedef")) {
3936 if (!parser_next(parser)) {
3937 parseerror(parser, "expected type definition after 'typedef'");
3940 return parse_typedef(parser);
3942 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
3945 else if (parser->tok == '$')
3947 if (!parser_next(parser)) {
3948 parseerror(parser, "parse error");
3954 parseerror(parser, "unexpected token: %s", parser->lex->tok.value);
3960 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
3962 return util_crc16(old, str, strlen(str));
3965 static void progdefs_crc_file(const char *str)
3967 /* write to progdefs.h here */
3971 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
3973 old = progdefs_crc_sum(old, str);
3974 progdefs_crc_file(str);
3978 static void generate_checksum(parser_t *parser)
3980 uint16_t crc = 0xFFFF;
3984 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
3985 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
3987 progdefs_crc_file("\tint\tpad;\n");
3988 progdefs_crc_file("\tint\tofs_return[3];\n");
3989 progdefs_crc_file("\tint\tofs_parm0[3];\n");
3990 progdefs_crc_file("\tint\tofs_parm1[3];\n");
3991 progdefs_crc_file("\tint\tofs_parm2[3];\n");
3992 progdefs_crc_file("\tint\tofs_parm3[3];\n");
3993 progdefs_crc_file("\tint\tofs_parm4[3];\n");
3994 progdefs_crc_file("\tint\tofs_parm5[3];\n");
3995 progdefs_crc_file("\tint\tofs_parm6[3];\n");
3996 progdefs_crc_file("\tint\tofs_parm7[3];\n");
3998 for (i = 0; i < parser->crc_globals; ++i) {
3999 if (!ast_istype(parser->globals[i], ast_value))
4001 value = (ast_value*)(parser->globals[i]);
4002 switch (value->expression.vtype) {
4003 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
4004 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
4005 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
4006 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
4008 crc = progdefs_crc_both(crc, "\tint\t");
4011 crc = progdefs_crc_both(crc, value->name);
4012 crc = progdefs_crc_both(crc, ";\n");
4014 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
4015 for (i = 0; i < parser->crc_fields; ++i) {
4016 if (!ast_istype(parser->fields[i], ast_value))
4018 value = (ast_value*)(parser->fields[i]);
4019 switch (value->expression.next->expression.vtype) {
4020 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
4021 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
4022 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
4023 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
4025 crc = progdefs_crc_both(crc, "\tint\t");
4028 crc = progdefs_crc_both(crc, value->name);
4029 crc = progdefs_crc_both(crc, ";\n");
4031 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
4036 static parser_t *parser;
4042 parser = (parser_t*)mem_a(sizeof(parser_t));
4046 memset(parser, 0, sizeof(*parser));
4048 for (i = 0; i < operator_count; ++i) {
4049 if (operators[i].id == opid1('=')) {
4050 parser->assign_op = operators+i;
4054 if (!parser->assign_op) {
4055 printf("internal error: initializing parser: failed to find assign operator\n");
4060 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
4061 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
4062 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
4063 vec_push(parser->_blocktypedefs, 0);
4067 bool parser_compile()
4069 /* initial lexer/parser state */
4070 parser->lex->flags.noops = true;
4072 if (parser_next(parser))
4074 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
4076 if (!parser_global_statement(parser)) {
4077 if (parser->tok == TOKEN_EOF)
4078 parseerror(parser, "unexpected eof");
4079 else if (!parser->errors)
4080 parseerror(parser, "there have been errors, bailing out");
4081 lex_close(parser->lex);
4087 parseerror(parser, "parse error");
4088 lex_close(parser->lex);
4093 lex_close(parser->lex);
4096 return !parser->errors;
4099 bool parser_compile_file(const char *filename)
4101 parser->lex = lex_open(filename);
4103 con_err("failed to open file \"%s\"\n", filename);
4106 return parser_compile();
4109 bool parser_compile_string_len(const char *name, const char *str, size_t len)
4111 parser->lex = lex_open_string(str, len, name);
4113 con_err("failed to create lexer for string \"%s\"\n", name);
4116 return parser_compile();
4119 bool parser_compile_string(const char *name, const char *str)
4121 parser->lex = lex_open_string(str, strlen(str), name);
4123 con_err("failed to create lexer for string \"%s\"\n", name);
4126 return parser_compile();
4129 void parser_cleanup()
4132 for (i = 0; i < vec_size(parser->accessors); ++i) {
4133 ast_delete(parser->accessors[i]->constval.vfunc);
4134 parser->accessors[i]->constval.vfunc = NULL;
4135 ast_delete(parser->accessors[i]);
4137 for (i = 0; i < vec_size(parser->functions); ++i) {
4138 ast_delete(parser->functions[i]);
4140 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
4141 ast_delete(parser->imm_vector[i]);
4143 for (i = 0; i < vec_size(parser->imm_string); ++i) {
4144 ast_delete(parser->imm_string[i]);
4146 for (i = 0; i < vec_size(parser->imm_float); ++i) {
4147 ast_delete(parser->imm_float[i]);
4149 for (i = 0; i < vec_size(parser->fields); ++i) {
4150 ast_delete(parser->fields[i]);
4152 for (i = 0; i < vec_size(parser->globals); ++i) {
4153 ast_delete(parser->globals[i]);
4155 vec_free(parser->accessors);
4156 vec_free(parser->functions);
4157 vec_free(parser->imm_vector);
4158 vec_free(parser->imm_string);
4159 vec_free(parser->imm_float);
4160 vec_free(parser->globals);
4161 vec_free(parser->fields);
4163 for (i = 0; i < vec_size(parser->variables); ++i)
4164 util_htdel(parser->variables[i]);
4165 vec_free(parser->variables);
4166 vec_free(parser->_blocklocals);
4167 vec_free(parser->_locals);
4169 for (i = 0; i < vec_size(parser->_typedefs); ++i)
4170 ast_delete(parser->_typedefs[i]);
4171 vec_free(parser->_typedefs);
4172 for (i = 0; i < vec_size(parser->typedefs); ++i)
4173 util_htdel(parser->typedefs[i]);
4174 vec_free(parser->typedefs);
4175 vec_free(parser->_blocktypedefs);
4180 bool parser_finish(const char *output)
4186 if (!parser->errors)
4188 ir = ir_builder_new("gmqcc_out");
4190 con_out("failed to allocate builder\n");
4194 for (i = 0; i < vec_size(parser->fields); ++i) {
4197 if (!ast_istype(parser->fields[i], ast_value))
4199 field = (ast_value*)parser->fields[i];
4200 hasvalue = field->hasvalue;
4201 field->hasvalue = false;
4202 if (!ast_global_codegen((ast_value*)field, ir, true)) {
4203 con_out("failed to generate field %s\n", field->name);
4204 ir_builder_delete(ir);
4209 ast_expression *subtype;
4210 field->hasvalue = true;
4211 subtype = field->expression.next;
4212 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
4213 if (subtype->expression.vtype == TYPE_FIELD)
4214 ifld->fieldtype = subtype->expression.next->expression.vtype;
4215 else if (subtype->expression.vtype == TYPE_FUNCTION)
4216 ifld->outtype = subtype->expression.next->expression.vtype;
4217 (void)!ir_value_set_field(field->ir_v, ifld);
4220 for (i = 0; i < vec_size(parser->globals); ++i) {
4222 if (!ast_istype(parser->globals[i], ast_value))
4224 asvalue = (ast_value*)(parser->globals[i]);
4225 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
4226 if (strcmp(asvalue->name, "end_sys_globals") &&
4227 strcmp(asvalue->name, "end_sys_fields"))
4229 retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
4230 "unused global: `%s`", asvalue->name);
4233 if (!ast_global_codegen(asvalue, ir, false)) {
4234 con_out("failed to generate global %s\n", asvalue->name);
4235 ir_builder_delete(ir);
4239 for (i = 0; i < vec_size(parser->imm_float); ++i) {
4240 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
4241 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
4242 ir_builder_delete(ir);
4246 for (i = 0; i < vec_size(parser->imm_string); ++i) {
4247 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
4248 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
4249 ir_builder_delete(ir);
4253 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
4254 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
4255 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
4256 ir_builder_delete(ir);
4260 for (i = 0; i < vec_size(parser->globals); ++i) {
4262 if (!ast_istype(parser->globals[i], ast_value))
4264 asvalue = (ast_value*)(parser->globals[i]);
4265 if (asvalue->setter) {
4266 if (!ast_global_codegen(asvalue->setter, ir, false) ||
4267 !ast_function_codegen(asvalue->setter->constval.vfunc, ir) ||
4268 !ir_function_finalize(asvalue->setter->constval.vfunc->ir_func))
4270 printf("failed to generate setter for %s\n", asvalue->name);
4271 ir_builder_delete(ir);
4275 if (asvalue->getter) {
4276 if (!ast_global_codegen(asvalue->getter, ir, false) ||
4277 !ast_function_codegen(asvalue->getter->constval.vfunc, ir) ||
4278 !ir_function_finalize(asvalue->getter->constval.vfunc->ir_func))
4280 printf("failed to generate getter for %s\n", asvalue->name);
4281 ir_builder_delete(ir);
4286 for (i = 0; i < vec_size(parser->fields); ++i) {
4288 asvalue = (ast_value*)(parser->fields[i]->expression.next);
4290 if (!ast_istype((ast_expression*)asvalue, ast_value))
4292 if (asvalue->expression.vtype != TYPE_ARRAY)
4294 if (asvalue->setter) {
4295 if (!ast_global_codegen(asvalue->setter, ir, false) ||
4296 !ast_function_codegen(asvalue->setter->constval.vfunc, ir) ||
4297 !ir_function_finalize(asvalue->setter->constval.vfunc->ir_func))
4299 printf("failed to generate setter for %s\n", asvalue->name);
4300 ir_builder_delete(ir);
4304 if (asvalue->getter) {
4305 if (!ast_global_codegen(asvalue->getter, ir, false) ||
4306 !ast_function_codegen(asvalue->getter->constval.vfunc, ir) ||
4307 !ir_function_finalize(asvalue->getter->constval.vfunc->ir_func))
4309 printf("failed to generate getter for %s\n", asvalue->name);
4310 ir_builder_delete(ir);
4315 for (i = 0; i < vec_size(parser->functions); ++i) {
4316 if (!ast_function_codegen(parser->functions[i], ir)) {
4317 con_out("failed to generate function %s\n", parser->functions[i]->name);
4318 ir_builder_delete(ir);
4323 ir_builder_dump(ir, con_out);
4324 for (i = 0; i < vec_size(parser->functions); ++i) {
4325 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
4326 con_out("failed to finalize function %s\n", parser->functions[i]->name);
4327 ir_builder_delete(ir);
4334 ir_builder_dump(ir, con_out);
4336 generate_checksum(parser);
4338 if (!ir_builder_generate(ir, output)) {
4339 con_out("*** failed to generate output file\n");
4340 ir_builder_delete(ir);
4345 ir_builder_delete(ir);
4349 con_out("*** there were compile errors\n");