18 ast_function **functions;
19 ast_value **imm_float;
20 ast_value **imm_string;
21 ast_value **imm_vector;
23 /* must be deleted first, they reference immediates and values */
24 ast_value **accessors;
26 ast_value *imm_float_zero;
27 ast_value *imm_vector_zero;
32 ast_function *function;
38 /* we store the '=' operator info */
39 const oper_info *assign_op;
41 /* TYPE_FIELD -> parser_find_fields is used instead of find_var
42 * TODO: TYPE_VECTOR -> x, y and z are accepted in the gmqcc standard
43 * anything else: type error
49 static bool GMQCC_WARN parser_pop_local(parser_t *parser);
50 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields);
51 static ast_block* parse_block(parser_t *parser, bool warnreturn);
52 static bool parse_block_into(parser_t *parser, ast_block *block, bool warnreturn);
53 static ast_expression* parse_statement_or_block(parser_t *parser);
54 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases);
55 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma);
56 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma);
58 static void parseerror(parser_t *parser, const char *fmt, ...)
65 con_vprintmsg(LVL_ERROR, parser->lex->tok.ctx.file, parser->lex->tok.ctx.line, "parse error", fmt, ap);
69 /* returns true if it counts as an error */
70 static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
73 int lvl = LVL_WARNING;
75 if (!OPTS_WARN(warntype))
84 con_vprintmsg(lvl, parser->lex->tok.ctx.file, parser->lex->tok.ctx.line, "warning", fmt, ap);
90 static bool GMQCC_WARN genwarning(lex_ctx ctx, int warntype, const char *fmt, ...)
93 int lvl = LVL_WARNING;
95 if (!OPTS_WARN(warntype))
102 con_vprintmsg(lvl, ctx.file, ctx.line, "warning", fmt, ap);
108 /**********************************************************************
109 * some maths used for constant folding
112 vector vec3_add(vector a, vector b)
121 vector vec3_sub(vector a, vector b)
130 qcfloat vec3_mulvv(vector a, vector b)
132 return (a.x * b.x + a.y * b.y + a.z * b.z);
135 vector vec3_mulvf(vector a, float b)
144 /**********************************************************************
148 bool parser_next(parser_t *parser)
150 /* lex_do kills the previous token */
151 parser->tok = lex_do(parser->lex);
152 if (parser->tok == TOKEN_EOF)
154 if (parser->tok >= TOKEN_ERROR) {
155 parseerror(parser, "lex error");
161 #define parser_tokval(p) ((p)->lex->tok.value)
162 #define parser_token(p) (&((p)->lex->tok))
163 #define parser_ctx(p) ((p)->lex->tok.ctx)
165 static ast_value* parser_const_float(parser_t *parser, double d)
169 for (i = 0; i < vec_size(parser->imm_float); ++i) {
170 if (parser->imm_float[i]->constval.vfloat == d)
171 return parser->imm_float[i];
173 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_FLOAT);
175 out->constval.vfloat = d;
176 vec_push(parser->imm_float, out);
180 static ast_value* parser_const_float_0(parser_t *parser)
182 if (!parser->imm_float_zero)
183 parser->imm_float_zero = parser_const_float(parser, 0);
184 return parser->imm_float_zero;
187 static char *parser_strdup(const char *str)
190 /* actually dup empty strings */
191 char *out = mem_a(1);
195 return util_strdup(str);
198 static ast_value* parser_const_string(parser_t *parser, const char *str)
202 for (i = 0; i < vec_size(parser->imm_string); ++i) {
203 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
204 return parser->imm_string[i];
206 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
208 out->constval.vstring = parser_strdup(str);
209 vec_push(parser->imm_string, out);
213 static ast_value* parser_const_vector(parser_t *parser, vector v)
217 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
218 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
219 return parser->imm_vector[i];
221 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
223 out->constval.vvec = v;
224 vec_push(parser->imm_vector, out);
228 static ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
234 return parser_const_vector(parser, v);
237 static ast_value* parser_const_vector_0(parser_t *parser)
239 if (!parser->imm_vector_zero)
240 parser->imm_vector_zero = parser_const_vector_f(parser, 0, 0, 0);
241 return parser->imm_vector_zero;
244 static ast_expression* parser_find_field(parser_t *parser, const char *name)
247 for (i = 0; i < vec_size(parser->fields); ++i) {
248 if (!strcmp(parser->fields[i].name, name))
249 return parser->fields[i].var;
254 static ast_expression* parser_find_global(parser_t *parser, const char *name)
257 for (i = 0; i < vec_size(parser->globals); ++i) {
258 if (!strcmp(parser->globals[i].name, name))
259 return parser->globals[i].var;
264 static ast_expression* parser_find_param(parser_t *parser, const char *name)
268 if (!parser->function)
270 fun = parser->function->vtype;
271 for (i = 0; i < vec_size(fun->expression.params); ++i) {
272 if (!strcmp(fun->expression.params[i]->name, name))
273 return (ast_expression*)(fun->expression.params[i]);
278 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
282 for (i = vec_size(parser->locals); i > upto;) {
284 if (!strcmp(parser->locals[i].name, name))
285 return parser->locals[i].var;
288 return parser_find_param(parser, name);
291 static ast_expression* parser_find_var(parser_t *parser, const char *name)
295 v = parser_find_local(parser, name, 0, &dummy);
296 if (!v) v = parser_find_global(parser, name);
302 size_t etype; /* 0 = expression, others are operators */
306 ast_block *block; /* for commas and function calls */
315 #define SY_PAREN_EXPR '('
316 #define SY_PAREN_FUNC 'f'
317 #define SY_PAREN_INDEX '['
319 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
330 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
334 e.out = (ast_expression*)v;
341 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
343 e.etype = 1 + (op - operators);
352 static sy_elem syparen(lex_ctx ctx, int p, size_t off) {
364 # define DEBUGSHUNTDO(x) x
366 # define DEBUGSHUNTDO(x)
369 /* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
370 * so we need to rotate it to become ent.(foo[n]).
372 static bool rotate_entfield_array_index_nodes(ast_expression **out)
374 ast_array_index *index;
375 ast_entfield *entfield;
379 ast_expression *entity;
381 lex_ctx ctx = ast_ctx(*out);
383 if (!ast_istype(*out, ast_array_index))
385 index = (ast_array_index*)*out;
387 if (!ast_istype(index->array, ast_entfield))
389 entfield = (ast_entfield*)index->array;
391 if (!ast_istype(entfield->field, ast_value))
393 field = (ast_value*)entfield->field;
396 entity = entfield->entity;
400 index = ast_array_index_new(ctx, (ast_expression*)field, sub);
401 entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
402 *out = (ast_expression*)entfield;
407 static bool parser_sy_pop(parser_t *parser, shunt *sy)
411 ast_expression *out = NULL;
412 ast_expression *exprs[3];
413 ast_block *blocks[3];
414 ast_value *asvalue[3];
416 qcint generated_op = 0;
421 if (!vec_size(sy->ops)) {
422 parseerror(parser, "internal error: missing operator");
426 if (sy->ops[vec_size(sy->ops)-1].paren) {
427 parseerror(parser, "unmatched parenthesis");
431 op = &operators[sy->ops[vec_size(sy->ops)-1].etype - 1];
432 ctx = sy->ops[vec_size(sy->ops)-1].ctx;
434 DEBUGSHUNTDO(con_out("apply %s\n", op->op));
436 if (vec_size(sy->out) < op->operands) {
437 parseerror(parser, "internal error: not enough operands: %i (operator %s (%i))", vec_size(sy->out),
438 op->op, (int)op->id);
442 vec_shrinkby(sy->ops, 1);
444 vec_shrinkby(sy->out, op->operands);
445 for (i = 0; i < op->operands; ++i) {
446 exprs[i] = sy->out[vec_size(sy->out)+i].out;
447 blocks[i] = sy->out[vec_size(sy->out)+i].block;
448 asvalue[i] = (ast_value*)exprs[i];
451 if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
452 parseerror(parser, "internal error: operator cannot be applied on empty blocks");
456 #define NotSameType(T) \
457 (exprs[0]->expression.vtype != exprs[1]->expression.vtype || \
458 exprs[0]->expression.vtype != T)
459 #define CanConstFold1(A) \
460 (ast_istype((A), ast_value) && ((ast_value*)(A))->isconst)
461 #define CanConstFold(A, B) \
462 (CanConstFold1(A) && CanConstFold1(B))
463 #define ConstV(i) (asvalue[(i)]->constval.vvec)
464 #define ConstF(i) (asvalue[(i)]->constval.vfloat)
465 #define ConstS(i) (asvalue[(i)]->constval.vstring)
469 parseerror(parser, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
473 if (exprs[0]->expression.vtype == TYPE_ENTITY) {
474 if (exprs[1]->expression.vtype != TYPE_FIELD) {
475 parseerror(parser, "type error: right hand of member-operand should be an entity-field");
478 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
480 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
481 parseerror(parser, "internal error: vector access is not supposed to be handled at this point");
485 parseerror(parser, "type error: member-of operator on something that is not an entity or vector");
491 if (exprs[0]->expression.vtype != TYPE_ARRAY &&
492 !(exprs[0]->expression.vtype == TYPE_FIELD &&
493 exprs[0]->expression.next->expression.vtype == TYPE_ARRAY))
495 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
496 parseerror(parser, "cannot index value of type %s", ty1);
499 if (exprs[1]->expression.vtype != TYPE_FLOAT) {
500 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
501 parseerror(parser, "index must be of type float, not %s", ty1);
504 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
505 if (rotate_entfield_array_index_nodes(&out))
507 if (opts_standard != COMPILER_GMQCC) {
508 /* this error doesn't need to make us bail out */
509 (void)!parsewarning(parser, WARN_EXTENSIONS,
510 "accessing array-field members of an entity without parenthesis\n"
511 " -> this is an extension from -std=gmqcc");
518 vec_push(blocks[0]->exprs, exprs[1]);
520 blocks[0] = ast_block_new(ctx);
521 vec_push(blocks[0]->exprs, exprs[0]);
522 vec_push(blocks[0]->exprs, exprs[1]);
524 if (!ast_block_set_type(blocks[0], exprs[1]))
527 vec_push(sy->out, syblock(ctx, blocks[0]));
531 switch (exprs[0]->expression.vtype) {
533 if (CanConstFold1(exprs[0]))
534 out = (ast_expression*)parser_const_float(parser, -ConstF(0));
536 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
537 (ast_expression*)parser_const_float_0(parser),
541 if (CanConstFold1(exprs[0]))
542 out = (ast_expression*)parser_const_vector_f(parser,
543 -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
545 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
546 (ast_expression*)parser_const_vector_0(parser),
550 parseerror(parser, "invalid types used in expression: cannot negate type %s",
551 type_name[exprs[0]->expression.vtype]);
557 switch (exprs[0]->expression.vtype) {
559 if (CanConstFold1(exprs[0]))
560 out = (ast_expression*)parser_const_float(parser, !ConstF(0));
562 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
565 if (CanConstFold1(exprs[0]))
566 out = (ast_expression*)parser_const_float(parser,
567 (!ConstV(0).x && !ConstV(0).y && !ConstV(0).z));
569 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
572 if (CanConstFold1(exprs[0]))
573 out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
575 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
577 /* we don't constant-fold NOT for these types */
579 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
582 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
585 parseerror(parser, "invalid types used in expression: cannot logically negate type %s",
586 type_name[exprs[0]->expression.vtype]);
592 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
593 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
595 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
596 type_name[exprs[0]->expression.vtype],
597 type_name[exprs[1]->expression.vtype]);
600 switch (exprs[0]->expression.vtype) {
602 if (CanConstFold(exprs[0], exprs[1]))
604 out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
607 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
610 if (CanConstFold(exprs[0], exprs[1]))
611 out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
613 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
616 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
617 type_name[exprs[0]->expression.vtype],
618 type_name[exprs[1]->expression.vtype]);
623 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
624 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
626 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
627 type_name[exprs[1]->expression.vtype],
628 type_name[exprs[0]->expression.vtype]);
631 switch (exprs[0]->expression.vtype) {
633 if (CanConstFold(exprs[0], exprs[1]))
634 out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
636 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
639 if (CanConstFold(exprs[0], exprs[1]))
640 out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
642 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
645 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
646 type_name[exprs[1]->expression.vtype],
647 type_name[exprs[0]->expression.vtype]);
652 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
653 exprs[0]->expression.vtype != TYPE_VECTOR &&
654 exprs[0]->expression.vtype != TYPE_FLOAT &&
655 exprs[1]->expression.vtype != TYPE_VECTOR &&
656 exprs[1]->expression.vtype != TYPE_FLOAT)
658 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
659 type_name[exprs[1]->expression.vtype],
660 type_name[exprs[0]->expression.vtype]);
663 switch (exprs[0]->expression.vtype) {
665 if (exprs[1]->expression.vtype == TYPE_VECTOR)
667 if (CanConstFold(exprs[0], exprs[1]))
668 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
670 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
674 if (CanConstFold(exprs[0], exprs[1]))
675 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
677 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
681 if (exprs[1]->expression.vtype == TYPE_FLOAT)
683 if (CanConstFold(exprs[0], exprs[1]))
684 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
686 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
690 if (CanConstFold(exprs[0], exprs[1]))
691 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
693 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
697 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
698 type_name[exprs[1]->expression.vtype],
699 type_name[exprs[0]->expression.vtype]);
704 if (NotSameType(TYPE_FLOAT)) {
705 parseerror(parser, "invalid types used in expression: cannot divide types %s and %s",
706 type_name[exprs[0]->expression.vtype],
707 type_name[exprs[1]->expression.vtype]);
710 if (CanConstFold(exprs[0], exprs[1]))
711 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
713 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
717 parseerror(parser, "qc does not have a modulo operator");
721 if (NotSameType(TYPE_FLOAT)) {
722 parseerror(parser, "invalid types used in expression: cannot perform bit operations between types %s and %s",
723 type_name[exprs[0]->expression.vtype],
724 type_name[exprs[1]->expression.vtype]);
727 if (CanConstFold(exprs[0], exprs[1]))
728 out = (ast_expression*)parser_const_float(parser,
729 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
730 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
732 out = (ast_expression*)ast_binary_new(ctx,
733 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
737 parseerror(parser, "TODO: bitxor");
742 case opid3('<','<','='):
743 case opid3('>','>','='):
744 parseerror(parser, "TODO: shifts");
748 generated_op += 1; /* INSTR_OR */
750 generated_op += INSTR_AND;
751 if (NotSameType(TYPE_FLOAT)) {
752 parseerror(parser, "invalid types used in expression: cannot perform logical operations between types %s and %s",
753 type_name[exprs[0]->expression.vtype],
754 type_name[exprs[1]->expression.vtype]);
755 parseerror(parser, "TODO: logical ops for arbitrary types using INSTR_NOT");
756 parseerror(parser, "TODO: optional early out");
759 if (opts_standard == COMPILER_GMQCC)
760 con_out("TODO: early out logic\n");
761 if (CanConstFold(exprs[0], exprs[1]))
762 out = (ast_expression*)parser_const_float(parser,
763 (generated_op == INSTR_OR ? (ConstF(0) || ConstF(1)) : (ConstF(0) && ConstF(1))));
765 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
769 generated_op += 1; /* INSTR_GT */
771 generated_op += 1; /* INSTR_LT */
772 case opid2('>', '='):
773 generated_op += 1; /* INSTR_GE */
774 case opid2('<', '='):
775 generated_op += INSTR_LE;
776 if (NotSameType(TYPE_FLOAT)) {
777 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
778 type_name[exprs[0]->expression.vtype],
779 type_name[exprs[1]->expression.vtype]);
782 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
784 case opid2('!', '='):
785 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
786 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
787 type_name[exprs[0]->expression.vtype],
788 type_name[exprs[1]->expression.vtype]);
791 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
793 case opid2('=', '='):
794 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
795 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
796 type_name[exprs[0]->expression.vtype],
797 type_name[exprs[1]->expression.vtype]);
800 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
804 if (ast_istype(exprs[0], ast_entfield)) {
805 ast_expression *field = ((ast_entfield*)exprs[0])->field;
806 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
807 exprs[0]->expression.vtype == TYPE_FIELD &&
808 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
810 assignop = type_storep_instr[TYPE_VECTOR];
813 assignop = type_storep_instr[exprs[0]->expression.vtype];
814 if (!ast_compare_type(field->expression.next, exprs[1])) {
815 ast_type_to_string(field->expression.next, ty1, sizeof(ty1));
816 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
817 if (opts_standard == COMPILER_QCC &&
818 field->expression.next->expression.vtype == TYPE_FUNCTION &&
819 exprs[1]->expression.vtype == TYPE_FUNCTION)
821 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
822 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
828 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
833 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
834 exprs[0]->expression.vtype == TYPE_FIELD &&
835 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
837 assignop = type_store_instr[TYPE_VECTOR];
840 assignop = type_store_instr[exprs[0]->expression.vtype];
843 if (assignop == AINSTR_END) {
844 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
845 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
846 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
848 else if (!ast_compare_type(exprs[0], exprs[1])) {
849 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
850 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
851 if (opts_standard == COMPILER_QCC &&
852 exprs[0]->expression.vtype == TYPE_FUNCTION &&
853 exprs[1]->expression.vtype == TYPE_FUNCTION)
855 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
856 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
862 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
865 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
869 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
870 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
872 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
873 type_name[exprs[0]->expression.vtype],
874 type_name[exprs[1]->expression.vtype]);
877 if (ast_istype(exprs[0], ast_entfield))
878 assignop = type_storep_instr[exprs[0]->expression.vtype];
880 assignop = type_store_instr[exprs[0]->expression.vtype];
881 switch (exprs[0]->expression.vtype) {
883 out = (ast_expression*)ast_binstore_new(ctx, assignop,
884 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
888 out = (ast_expression*)ast_binstore_new(ctx, assignop,
889 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
893 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
894 type_name[exprs[0]->expression.vtype],
895 type_name[exprs[1]->expression.vtype]);
903 parseerror(parser, "failed to apply operand %s", op->op);
907 DEBUGSHUNTDO(con_out("applied %s\n", op->op));
908 vec_push(sy->out, syexp(ctx, out));
912 static bool parser_close_call(parser_t *parser, shunt *sy)
914 /* was a function call */
921 vec_shrinkby(sy->ops, 1);
922 fid = sy->ops[vec_size(sy->ops)].off;
924 /* out[fid] is the function
925 * everything above is parameters...
927 * 1 params = ast_expression
931 if (vec_size(sy->out) < 1 || vec_size(sy->out) <= fid) {
932 parseerror(parser, "internal error: function call needs function and parameter list...");
936 fun = sy->out[fid].out;
938 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
940 parseerror(parser, "out of memory");
944 if (fid+1 == vec_size(sy->out)) {
947 } else if (fid+2 == vec_size(sy->out)) {
949 vec_shrinkby(sy->out, 1);
950 params = sy->out[vec_size(sy->out)].block;
954 vec_push(call->params, sy->out[vec_size(sy->out)].out);
956 paramcount = vec_size(params->exprs);
957 call->params = params->exprs;
958 params->exprs = NULL;
961 if (!ast_call_check_types(call))
964 parseerror(parser, "invalid function call");
968 /* overwrite fid, the function, with a call */
969 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
971 if (fun->expression.vtype != TYPE_FUNCTION) {
972 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
976 if (!fun->expression.next) {
977 parseerror(parser, "could not determine function return type");
980 if (vec_size(fun->expression.params) != paramcount &&
981 !(fun->expression.variadic &&
982 vec_size(fun->expression.params) < paramcount))
985 const char *fewmany = (vec_size(fun->expression.params) > paramcount) ? "few" : "many";
987 fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
988 if (opts_standard == COMPILER_GMQCC)
991 parseerror(parser, "too %s parameters for call to %s: expected %i, got %i\n"
992 " -> `%s` has been declared here: %s:%i",
993 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
994 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
996 parseerror(parser, "too %s parameters for function call: expected %i, got %i\n"
997 " -> `%s` has been declared here: %s:%i",
998 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
999 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1005 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1006 "too %s parameters for call to %s: expected %i, got %i\n"
1007 " -> `%s` has been declared here: %s:%i",
1008 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1009 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1011 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1012 "too %s parameters for function call: expected %i, got %i\n"
1013 " -> `%s` has been declared here: %s:%i",
1014 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1015 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1023 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
1025 if (!vec_size(sy->ops)) {
1026 parseerror(parser, "unmatched closing paren");
1029 /* this would for bit a + (x) because there are no operators inside (x)
1030 if (sy->ops[vec_size(sy->ops)-1].paren == 1) {
1031 parseerror(parser, "empty parenthesis expression");
1035 while (vec_size(sy->ops)) {
1036 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_FUNC) {
1037 if (!parser_close_call(parser, sy))
1041 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_EXPR) {
1042 vec_shrinkby(sy->ops, 1);
1043 return !functions_only;
1045 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_INDEX) {
1048 /* pop off the parenthesis */
1049 vec_shrinkby(sy->ops, 1);
1050 /* then apply the index operator */
1051 if (!parser_sy_pop(parser, sy))
1055 if (!parser_sy_pop(parser, sy))
1061 static void parser_reclassify_token(parser_t *parser)
1064 for (i = 0; i < operator_count; ++i) {
1065 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1066 parser->tok = TOKEN_OPERATOR;
1072 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma)
1074 ast_expression *expr = NULL;
1076 bool wantop = false;
1077 bool gotmemberof = false;
1079 /* count the parens because an if starts with one, so the
1080 * end of a condition is an unmatched closing paren
1087 parser->lex->flags.noops = false;
1089 parser_reclassify_token(parser);
1094 gotmemberof = false;
1096 parser->memberof = 0;
1098 if (parser->tok == TOKEN_IDENT)
1100 ast_expression *var;
1102 parseerror(parser, "expected operator or end of statement");
1107 if (opts_standard == COMPILER_GMQCC)
1109 if (parser->memberof == TYPE_ENTITY) {
1110 /* still get vars first since there could be a fieldpointer */
1111 var = parser_find_var(parser, parser_tokval(parser));
1113 var = parser_find_field(parser, parser_tokval(parser));
1115 else if (parser->memberof == TYPE_VECTOR)
1117 parseerror(parser, "TODO: implement effective vector member access");
1120 else if (parser->memberof) {
1121 parseerror(parser, "namespace for member not found");
1125 var = parser_find_var(parser, parser_tokval(parser));
1127 var = parser_find_var(parser, parser_tokval(parser));
1129 var = parser_find_field(parser, parser_tokval(parser));
1132 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1135 if (ast_istype(var, ast_value))
1136 ((ast_value*)var)->uses++;
1137 vec_push(sy.out, syexp(parser_ctx(parser), var));
1138 DEBUGSHUNTDO(con_out("push %s\n", parser_tokval(parser)));
1140 else if (parser->tok == TOKEN_FLOATCONST) {
1143 parseerror(parser, "expected operator or end of statement, got constant");
1147 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1150 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1151 DEBUGSHUNTDO(con_out("push %g\n", parser_token(parser)->constval.f));
1153 else if (parser->tok == TOKEN_INTCONST) {
1156 parseerror(parser, "expected operator or end of statement, got constant");
1160 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1163 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1164 DEBUGSHUNTDO(con_out("push %i\n", parser_token(parser)->constval.i));
1166 else if (parser->tok == TOKEN_STRINGCONST) {
1169 parseerror(parser, "expected operator or end of statement, got constant");
1173 val = parser_const_string(parser, parser_tokval(parser));
1176 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1177 DEBUGSHUNTDO(con_out("push string\n"));
1179 else if (parser->tok == TOKEN_VECTORCONST) {
1182 parseerror(parser, "expected operator or end of statement, got constant");
1186 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1189 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1190 DEBUGSHUNTDO(con_out("push '%g %g %g'\n",
1191 parser_token(parser)->constval.v.x,
1192 parser_token(parser)->constval.v.y,
1193 parser_token(parser)->constval.v.z));
1195 else if (parser->tok == '(') {
1196 parseerror(parser, "internal error: '(' should be classified as operator");
1199 else if (parser->tok == '[') {
1200 parseerror(parser, "internal error: '[' should be classified as operator");
1203 else if (parser->tok == ')') {
1205 DEBUGSHUNTDO(con_out("do[op] )\n"));
1209 /* we do expect an operator next */
1210 /* closing an opening paren */
1211 if (!parser_close_paren(parser, &sy, false))
1214 DEBUGSHUNTDO(con_out("do[nop] )\n"));
1218 /* allowed for function calls */
1219 if (!parser_close_paren(parser, &sy, true))
1224 else if (parser->tok == ']') {
1226 parseerror(parser, "operand expected");
1230 if (!parser_close_paren(parser, &sy, false))
1234 else if (parser->tok != TOKEN_OPERATOR) {
1236 parseerror(parser, "expected operator or end of statement");
1243 /* classify the operator */
1244 /* TODO: suffix operators */
1245 const oper_info *op;
1246 const oper_info *olast = NULL;
1248 for (o = 0; o < operator_count; ++o) {
1249 if ((!(operators[o].flags & OP_PREFIX) == wantop) &&
1250 !(operators[o].flags & OP_SUFFIX) && /* remove this */
1251 !strcmp(parser_tokval(parser), operators[o].op))
1256 if (o == operator_count) {
1257 /* no operator found... must be the end of the statement */
1260 /* found an operator */
1263 /* when declaring variables, a comma starts a new variable */
1264 if (op->id == opid1(',') && !parens && stopatcomma) {
1265 /* fixup the token */
1270 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1271 olast = &operators[vec_last(sy.ops).etype-1];
1274 (op->prec < olast->prec) ||
1275 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1277 if (!parser_sy_pop(parser, &sy))
1279 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1280 olast = &operators[vec_last(sy.ops).etype-1];
1285 if (op->id == opid1('.') && opts_standard == COMPILER_GMQCC) {
1286 /* for gmqcc standard: open up the namespace of the previous type */
1287 ast_expression *prevex = vec_last(sy.out).out;
1289 parseerror(parser, "unexpected member operator");
1292 if (prevex->expression.vtype == TYPE_ENTITY)
1293 parser->memberof = TYPE_ENTITY;
1294 else if (prevex->expression.vtype == TYPE_VECTOR)
1295 parser->memberof = TYPE_VECTOR;
1297 parseerror(parser, "type error: type has no members");
1303 if (op->id == opid1('(')) {
1305 size_t sycount = vec_size(sy.out);
1306 DEBUGSHUNTDO(con_out("push [op] (\n"));
1308 /* we expected an operator, this is the function-call operator */
1309 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_FUNC, sycount-1));
1312 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_EXPR, 0));
1313 DEBUGSHUNTDO(con_out("push [nop] (\n"));
1316 } else if (op->id == opid1('[')) {
1318 parseerror(parser, "unexpected array subscript");
1322 /* push both the operator and the paren, this makes life easier */
1323 vec_push(sy.ops, syop(parser_ctx(parser), op));
1324 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_INDEX, 0));
1327 DEBUGSHUNTDO(con_out("push operator %s\n", op->op));
1328 vec_push(sy.ops, syop(parser_ctx(parser), op));
1332 if (!parser_next(parser)) {
1335 if (parser->tok == ';' ||
1336 (!parens && parser->tok == ']') ||
1343 while (vec_size(sy.ops)) {
1344 if (!parser_sy_pop(parser, &sy))
1348 parser->lex->flags.noops = true;
1349 if (!vec_size(sy.out)) {
1350 parseerror(parser, "empty expression");
1353 expr = sy.out[0].out;
1356 DEBUGSHUNTDO(con_out("shunt done\n"));
1360 parser->lex->flags.noops = true;
1366 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma)
1368 ast_expression *e = parse_expression_leave(parser, stopatcomma);
1371 if (!parser_next(parser)) {
1378 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
1381 ast_expression *cond, *ontrue, *onfalse = NULL;
1384 lex_ctx ctx = parser_ctx(parser);
1386 /* skip the 'if', parse an optional 'not' and check for an opening paren */
1387 if (!parser_next(parser)) {
1388 parseerror(parser, "expected condition or 'not'");
1391 if (parser->tok == TOKEN_KEYWORD && !strcmp(parser_tokval(parser), "not")) {
1393 if (!parser_next(parser)) {
1394 parseerror(parser, "expected condition in parenthesis");
1398 if (parser->tok != '(') {
1399 parseerror(parser, "expected 'if' condition in parenthesis");
1402 /* parse into the expression */
1403 if (!parser_next(parser)) {
1404 parseerror(parser, "expected 'if' condition after opening paren");
1407 /* parse the condition */
1408 cond = parse_expression_leave(parser, false);
1412 if (parser->tok != ')') {
1413 parseerror(parser, "expected closing paren after 'if' condition");
1417 /* parse into the 'then' branch */
1418 if (!parser_next(parser)) {
1419 parseerror(parser, "expected statement for on-true branch of 'if'");
1423 ontrue = parse_statement_or_block(parser);
1428 /* check for an else */
1429 if (!strcmp(parser_tokval(parser), "else")) {
1430 /* parse into the 'else' branch */
1431 if (!parser_next(parser)) {
1432 parseerror(parser, "expected on-false branch after 'else'");
1437 onfalse = parse_statement_or_block(parser);
1446 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
1448 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
1449 *out = (ast_expression*)ifthen;
1453 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
1456 ast_expression *cond, *ontrue;
1458 lex_ctx ctx = parser_ctx(parser);
1460 /* skip the 'while' and check for opening paren */
1461 if (!parser_next(parser) || parser->tok != '(') {
1462 parseerror(parser, "expected 'while' condition in parenthesis");
1465 /* parse into the expression */
1466 if (!parser_next(parser)) {
1467 parseerror(parser, "expected 'while' condition after opening paren");
1470 /* parse the condition */
1471 cond = parse_expression_leave(parser, false);
1475 if (parser->tok != ')') {
1476 parseerror(parser, "expected closing paren after 'while' condition");
1480 /* parse into the 'then' branch */
1481 if (!parser_next(parser)) {
1482 parseerror(parser, "expected while-loop body");
1486 ontrue = parse_statement_or_block(parser);
1492 aloop = ast_loop_new(ctx, NULL, cond, NULL, NULL, ontrue);
1493 *out = (ast_expression*)aloop;
1497 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
1500 ast_expression *cond, *ontrue;
1502 lex_ctx ctx = parser_ctx(parser);
1504 /* skip the 'do' and get the body */
1505 if (!parser_next(parser)) {
1506 parseerror(parser, "expected loop body");
1509 ontrue = parse_statement_or_block(parser);
1513 /* expect the "while" */
1514 if (parser->tok != TOKEN_KEYWORD ||
1515 strcmp(parser_tokval(parser), "while"))
1517 parseerror(parser, "expected 'while' and condition");
1522 /* skip the 'while' and check for opening paren */
1523 if (!parser_next(parser) || parser->tok != '(') {
1524 parseerror(parser, "expected 'while' condition in parenthesis");
1528 /* parse into the expression */
1529 if (!parser_next(parser)) {
1530 parseerror(parser, "expected 'while' condition after opening paren");
1534 /* parse the condition */
1535 cond = parse_expression_leave(parser, false);
1539 if (parser->tok != ')') {
1540 parseerror(parser, "expected closing paren after 'while' condition");
1546 if (!parser_next(parser) || parser->tok != ';') {
1547 parseerror(parser, "expected semicolon after condition");
1553 if (!parser_next(parser)) {
1554 parseerror(parser, "parse error");
1560 aloop = ast_loop_new(ctx, NULL, NULL, cond, NULL, ontrue);
1561 *out = (ast_expression*)aloop;
1565 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
1568 ast_expression *initexpr, *cond, *increment, *ontrue;
1569 size_t oldblocklocal;
1572 lex_ctx ctx = parser_ctx(parser);
1574 oldblocklocal = parser->blocklocal;
1575 parser->blocklocal = vec_size(parser->locals);
1582 /* skip the 'while' and check for opening paren */
1583 if (!parser_next(parser) || parser->tok != '(') {
1584 parseerror(parser, "expected 'for' expressions in parenthesis");
1587 /* parse into the expression */
1588 if (!parser_next(parser)) {
1589 parseerror(parser, "expected 'for' initializer after opening paren");
1593 if (parser->tok == TOKEN_TYPENAME) {
1594 if (opts_standard != COMPILER_GMQCC) {
1595 if (parsewarning(parser, WARN_EXTENSIONS,
1596 "current standard does not allow variable declarations in for-loop initializers"))
1600 parseerror(parser, "TODO: assignment of new variables to be non-const");
1602 if (!parse_variable(parser, block, true))
1605 else if (parser->tok != ';')
1607 initexpr = parse_expression_leave(parser, false);
1612 /* move on to condition */
1613 if (parser->tok != ';') {
1614 parseerror(parser, "expected semicolon after for-loop initializer");
1617 if (!parser_next(parser)) {
1618 parseerror(parser, "expected for-loop condition");
1622 /* parse the condition */
1623 if (parser->tok != ';') {
1624 cond = parse_expression_leave(parser, false);
1629 /* move on to incrementor */
1630 if (parser->tok != ';') {
1631 parseerror(parser, "expected semicolon after for-loop initializer");
1634 if (!parser_next(parser)) {
1635 parseerror(parser, "expected for-loop condition");
1639 /* parse the incrementor */
1640 if (parser->tok != ')') {
1641 increment = parse_expression_leave(parser, false);
1644 if (!ast_istype(increment, ast_store) &&
1645 !ast_istype(increment, ast_call) &&
1646 !ast_istype(increment, ast_binstore))
1648 if (genwarning(ast_ctx(increment), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
1654 if (parser->tok != ')') {
1655 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
1658 /* parse into the 'then' branch */
1659 if (!parser_next(parser)) {
1660 parseerror(parser, "expected for-loop body");
1663 ontrue = parse_statement_or_block(parser);
1668 aloop = ast_loop_new(ctx, initexpr, cond, NULL, increment, ontrue);
1669 *out = (ast_expression*)aloop;
1671 while (vec_size(parser->locals) > parser->blocklocal)
1672 retval = retval && parser_pop_local(parser);
1673 parser->blocklocal = oldblocklocal;
1676 if (initexpr) ast_delete(initexpr);
1677 if (cond) ast_delete(cond);
1678 if (increment) ast_delete(increment);
1679 while (vec_size(parser->locals) > parser->blocklocal)
1680 (void)!parser_pop_local(parser);
1681 parser->blocklocal = oldblocklocal;
1685 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
1687 ast_expression *exp = NULL;
1688 ast_return *ret = NULL;
1689 ast_value *expected = parser->function->vtype;
1691 if (!parser_next(parser)) {
1692 parseerror(parser, "expected return expression");
1696 if (parser->tok != ';') {
1697 exp = parse_expression(parser, false);
1701 if (exp->expression.vtype != expected->expression.next->expression.vtype) {
1702 parseerror(parser, "return with invalid expression");
1705 ret = ast_return_new(exp->expression.node.context, exp);
1711 if (!parser_next(parser))
1712 parseerror(parser, "parse error");
1713 if (expected->expression.next->expression.vtype != TYPE_VOID) {
1714 if (opts_standard != COMPILER_GMQCC)
1715 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
1717 parseerror(parser, "return without value");
1719 ret = ast_return_new(parser_ctx(parser), NULL);
1721 *out = (ast_expression*)ret;
1725 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
1727 lex_ctx ctx = parser_ctx(parser);
1729 if (!parser_next(parser) || parser->tok != ';') {
1730 parseerror(parser, "expected semicolon");
1734 if (!parser_next(parser))
1735 parseerror(parser, "parse error");
1737 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue);
1741 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
1743 ast_expression *operand;
1745 ast_switch *switchnode;
1746 ast_switch_case swcase;
1748 lex_ctx ctx = parser_ctx(parser);
1750 /* parse over the opening paren */
1751 if (!parser_next(parser) || parser->tok != '(') {
1752 parseerror(parser, "expected switch operand in parenthesis");
1756 /* parse into the expression */
1757 if (!parser_next(parser)) {
1758 parseerror(parser, "expected switch operand");
1761 /* parse the operand */
1762 operand = parse_expression_leave(parser, false);
1766 if (!OPTS_FLAG(RELAXED_SWITCH)) {
1767 opval = (ast_value*)operand;
1768 if (!ast_istype(operand, ast_value) || !opval->isconst) {
1769 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
1775 switchnode = ast_switch_new(ctx, operand);
1778 if (parser->tok != ')') {
1779 ast_delete(switchnode);
1780 parseerror(parser, "expected closing paren after 'switch' operand");
1784 /* parse over the opening paren */
1785 if (!parser_next(parser) || parser->tok != '{') {
1786 ast_delete(switchnode);
1787 parseerror(parser, "expected list of cases");
1791 if (!parser_next(parser)) {
1792 ast_delete(switchnode);
1793 parseerror(parser, "expected 'case' or 'default'");
1798 while (parser->tok != '}') {
1801 if (parser->tok != TOKEN_KEYWORD) {
1802 ast_delete(switchnode);
1803 parseerror(parser, "expected 'case' or 'default'");
1806 if (!strcmp(parser_tokval(parser), "case")) {
1807 if (!parser_next(parser)) {
1808 ast_delete(switchnode);
1809 parseerror(parser, "expected expression for case");
1812 swcase.value = parse_expression_leave(parser, false);
1813 if (!swcase.value) {
1814 ast_delete(switchnode);
1815 parseerror(parser, "expected expression for case");
1819 else if (!strcmp(parser_tokval(parser), "default")) {
1820 swcase.value = NULL;
1821 if (!parser_next(parser)) {
1822 ast_delete(switchnode);
1823 parseerror(parser, "expected colon");
1828 /* Now the colon and body */
1829 if (parser->tok != ':') {
1830 if (swcase.value) ast_unref(swcase.value);
1831 ast_delete(switchnode);
1832 parseerror(parser, "expected colon");
1836 if (!parser_next(parser)) {
1837 if (swcase.value) ast_unref(swcase.value);
1838 ast_delete(switchnode);
1839 parseerror(parser, "expected statements or case");
1842 block = ast_block_new(parser_ctx(parser));
1844 if (swcase.value) ast_unref(swcase.value);
1845 ast_delete(switchnode);
1848 swcase.code = (ast_expression*)block;
1849 vec_push(switchnode->cases, swcase);
1851 ast_expression *expr;
1852 if (parser->tok == '}')
1854 if (parser->tok == TOKEN_KEYWORD) {
1855 if (!strcmp(parser_tokval(parser), "case") ||
1856 !strcmp(parser_tokval(parser), "default"))
1861 if (!parse_statement(parser, block, &expr, true)) {
1862 ast_delete(switchnode);
1867 vec_push(block->exprs, expr);
1872 if (parser->tok != '}') {
1873 ast_delete(switchnode);
1874 parseerror(parser, "expected closing paren of case list");
1877 if (!parser_next(parser)) {
1878 ast_delete(switchnode);
1879 parseerror(parser, "parse error after switch");
1882 *out = (ast_expression*)switchnode;
1886 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
1888 if (parser->tok == TOKEN_TYPENAME || parser->tok == '.')
1890 /* local variable */
1892 parseerror(parser, "cannot declare a variable from here");
1895 if (opts_standard == COMPILER_QCC) {
1896 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
1899 if (!parse_variable(parser, block, false))
1904 else if (parser->tok == TOKEN_KEYWORD)
1906 if (!strcmp(parser_tokval(parser), "local"))
1909 parseerror(parser, "cannot declare a local variable here");
1912 if (!parser_next(parser)) {
1913 parseerror(parser, "expected variable declaration");
1916 if (!parse_variable(parser, block, true))
1921 else if (!strcmp(parser_tokval(parser), "return"))
1923 return parse_return(parser, block, out);
1925 else if (!strcmp(parser_tokval(parser), "if"))
1927 return parse_if(parser, block, out);
1929 else if (!strcmp(parser_tokval(parser), "while"))
1931 return parse_while(parser, block, out);
1933 else if (!strcmp(parser_tokval(parser), "do"))
1935 return parse_dowhile(parser, block, out);
1937 else if (!strcmp(parser_tokval(parser), "for"))
1939 if (opts_standard == COMPILER_QCC) {
1940 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
1943 return parse_for(parser, block, out);
1945 else if (!strcmp(parser_tokval(parser), "break"))
1947 return parse_break_continue(parser, block, out, false);
1949 else if (!strcmp(parser_tokval(parser), "continue"))
1951 return parse_break_continue(parser, block, out, true);
1953 else if (!strcmp(parser_tokval(parser), "switch"))
1955 return parse_switch(parser, block, out);
1957 else if (!strcmp(parser_tokval(parser), "case") ||
1958 !strcmp(parser_tokval(parser), "default"))
1961 parseerror(parser, "unexpected 'case' label");
1966 parseerror(parser, "Unexpected keyword");
1969 else if (parser->tok == '{')
1972 inner = parse_block(parser, false);
1975 *out = (ast_expression*)inner;
1980 ast_expression *exp = parse_expression(parser, false);
1984 if (!ast_istype(exp, ast_store) &&
1985 !ast_istype(exp, ast_call) &&
1986 !ast_istype(exp, ast_binstore))
1988 if (genwarning(ast_ctx(exp), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
1995 static bool GMQCC_WARN parser_pop_local(parser_t *parser)
2000 ve = &vec_last(parser->locals);
2001 if (!parser->errors) {
2002 if (ast_istype(ve->var, ast_value) && !(((ast_value*)(ve->var))->uses)) {
2003 if (parsewarning(parser, WARN_UNUSED_VARIABLE, "unused variable: `%s`", ve->name))
2008 vec_pop(parser->locals);
2012 static bool parse_block_into(parser_t *parser, ast_block *block, bool warnreturn)
2014 size_t oldblocklocal;
2017 oldblocklocal = parser->blocklocal;
2018 parser->blocklocal = vec_size(parser->locals);
2020 if (!parser_next(parser)) { /* skip the '{' */
2021 parseerror(parser, "expected function body");
2025 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
2027 ast_expression *expr;
2028 if (parser->tok == '}')
2031 if (!parse_statement(parser, block, &expr, false)) {
2032 /* parseerror(parser, "parse error"); */
2038 vec_push(block->exprs, expr);
2041 if (parser->tok != '}') {
2044 if (warnreturn && parser->function->vtype->expression.next->expression.vtype != TYPE_VOID)
2046 if (!vec_size(block->exprs) ||
2047 !ast_istype(vec_last(block->exprs), ast_return))
2049 if (parsewarning(parser, WARN_MISSING_RETURN_VALUES, "control reaches end of non-void function")) {
2055 (void)parser_next(parser);
2059 while (vec_size(parser->locals) > parser->blocklocal)
2060 retval = retval && parser_pop_local(parser);
2061 parser->blocklocal = oldblocklocal;
2065 static ast_block* parse_block(parser_t *parser, bool warnreturn)
2068 block = ast_block_new(parser_ctx(parser));
2071 if (!parse_block_into(parser, block, warnreturn)) {
2072 ast_block_delete(block);
2078 static ast_expression* parse_statement_or_block(parser_t *parser)
2080 ast_expression *expr = NULL;
2081 if (parser->tok == '{')
2082 return (ast_expression*)parse_block(parser, false);
2083 if (!parse_statement(parser, NULL, &expr, false))
2089 static bool create_vector_members(parser_t *parser, ast_value *var, varentry_t *ve)
2092 size_t len = strlen(var->name);
2094 for (i = 0; i < 3; ++i) {
2095 ve[i].var = (ast_expression*)ast_member_new(ast_ctx(var), (ast_expression*)var, i);
2099 ve[i].name = (char*)mem_a(len+3);
2101 ast_delete(ve[i].var);
2105 memcpy(ve[i].name, var->name, len);
2106 ve[i].name[len] = '_';
2107 ve[i].name[len+1] = 'x'+i;
2108 ve[i].name[len+2] = 0;
2117 ast_delete(ve[i].var);
2124 static bool parse_function_body(parser_t *parser, ast_value *var)
2126 ast_block *block = NULL;
2131 ast_expression *framenum = NULL;
2132 ast_expression *nextthink = NULL;
2133 /* None of the following have to be deleted */
2134 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
2135 ast_expression *gbl_time = NULL, *gbl_self = NULL;
2136 bool has_frame_think;
2140 has_frame_think = false;
2141 old = parser->function;
2143 if (var->expression.variadic) {
2144 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
2145 "variadic function with implementation will not be able to access additional parameters"))
2151 if (parser->tok == '[') {
2152 /* got a frame definition: [ framenum, nextthink ]
2153 * this translates to:
2154 * self.frame = framenum;
2155 * self.nextthink = time + 0.1;
2156 * self.think = nextthink;
2160 fld_think = parser_find_field(parser, "think");
2161 fld_nextthink = parser_find_field(parser, "nextthink");
2162 fld_frame = parser_find_field(parser, "frame");
2163 if (!fld_think || !fld_nextthink || !fld_frame) {
2164 parseerror(parser, "cannot use [frame,think] notation without the required fields");
2165 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
2168 gbl_time = parser_find_global(parser, "time");
2169 gbl_self = parser_find_global(parser, "self");
2170 if (!gbl_time || !gbl_self) {
2171 parseerror(parser, "cannot use [frame,think] notation without the required globals");
2172 parseerror(parser, "please declare the following globals: `time`, `self`");
2176 if (!parser_next(parser))
2179 framenum = parse_expression_leave(parser, true);
2181 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
2184 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->isconst) {
2185 ast_unref(framenum);
2186 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
2190 if (parser->tok != ',') {
2191 ast_unref(framenum);
2192 parseerror(parser, "expected comma after frame number in [frame,think] notation");
2193 parseerror(parser, "Got a %i\n", parser->tok);
2197 if (!parser_next(parser)) {
2198 ast_unref(framenum);
2202 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
2204 /* qc allows the use of not-yet-declared functions here
2205 * - this automatically creates a prototype */
2207 ast_value *thinkfunc;
2208 ast_expression *functype = fld_think->expression.next;
2210 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
2211 if (!thinkfunc || !ast_type_adopt(thinkfunc, functype)) {
2212 ast_unref(framenum);
2213 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
2217 if (!parser_next(parser)) {
2218 ast_unref(framenum);
2219 ast_delete(thinkfunc);
2223 varent.var = (ast_expression*)thinkfunc;
2224 varent.name = util_strdup(thinkfunc->name);
2225 vec_push(parser->globals, varent);
2226 nextthink = (ast_expression*)thinkfunc;
2229 nextthink = parse_expression_leave(parser, true);
2231 ast_unref(framenum);
2232 parseerror(parser, "expected a think-function in [frame,think] notation");
2237 if (!ast_istype(nextthink, ast_value)) {
2238 parseerror(parser, "think-function in [frame,think] notation must be a constant");
2242 if (retval && parser->tok != ']') {
2243 parseerror(parser, "expected closing `]` for [frame,think] notation");
2247 if (retval && !parser_next(parser)) {
2251 if (retval && parser->tok != '{') {
2252 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
2257 ast_unref(nextthink);
2258 ast_unref(framenum);
2262 has_frame_think = true;
2265 block = ast_block_new(parser_ctx(parser));
2267 parseerror(parser, "failed to allocate block");
2268 if (has_frame_think) {
2269 ast_unref(nextthink);
2270 ast_unref(framenum);
2275 if (has_frame_think) {
2277 ast_expression *self_frame;
2278 ast_expression *self_nextthink;
2279 ast_expression *self_think;
2280 ast_expression *time_plus_1;
2281 ast_store *store_frame;
2282 ast_store *store_nextthink;
2283 ast_store *store_think;
2285 ctx = parser_ctx(parser);
2286 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
2287 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
2288 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
2290 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
2291 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
2293 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
2294 if (self_frame) ast_delete(self_frame);
2295 if (self_nextthink) ast_delete(self_nextthink);
2296 if (self_think) ast_delete(self_think);
2297 if (time_plus_1) ast_delete(time_plus_1);
2303 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
2304 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
2305 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
2308 ast_delete(self_frame);
2311 if (!store_nextthink) {
2312 ast_delete(self_nextthink);
2316 ast_delete(self_think);
2320 if (store_frame) ast_delete(store_frame);
2321 if (store_nextthink) ast_delete(store_nextthink);
2322 if (store_think) ast_delete(store_think);
2325 vec_push(block->exprs, (ast_expression*)store_frame);
2326 vec_push(block->exprs, (ast_expression*)store_nextthink);
2327 vec_push(block->exprs, (ast_expression*)store_think);
2331 parseerror(parser, "failed to generate code for [frame,think]");
2332 ast_unref(nextthink);
2333 ast_unref(framenum);
2339 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
2342 ast_value *param = var->expression.params[parami];
2344 if (param->expression.vtype != TYPE_VECTOR &&
2345 (param->expression.vtype != TYPE_FIELD ||
2346 param->expression.next->expression.vtype != TYPE_VECTOR))
2351 if (!create_vector_members(parser, param, ve)) {
2352 ast_block_delete(block);
2356 for (e = 0; e < 3; ++e) {
2357 vec_push(parser->locals, ve[e]);
2358 ast_block_collect(block, ve[e].var);
2359 ve[e].var = NULL; /* collected */
2363 func = ast_function_new(ast_ctx(var), var->name, var);
2365 parseerror(parser, "failed to allocate function for `%s`", var->name);
2366 ast_block_delete(block);
2369 vec_push(parser->functions, func);
2371 parser->function = func;
2372 if (!parse_block_into(parser, block, true)) {
2373 ast_block_delete(block);
2377 vec_push(func->blocks, block);
2379 parser->function = old;
2380 while (vec_size(parser->locals))
2381 retval = retval && parser_pop_local(parser);
2383 if (parser->tok == ';')
2384 return parser_next(parser);
2385 else if (opts_standard == COMPILER_QCC)
2386 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
2390 vec_pop(parser->functions);
2391 ast_function_delete(func);
2392 var->constval.vfunc = NULL;
2395 while (vec_size(parser->locals)) {
2396 mem_d(vec_last(parser->locals).name);
2397 vec_pop(parser->locals);
2399 parser->function = old;
2403 static ast_expression *array_accessor_split(
2408 ast_expression *left,
2409 ast_expression *right
2415 lex_ctx ctx = ast_ctx(array);
2417 if (!left || !right) {
2418 if (left) ast_delete(left);
2419 if (right) ast_delete(right);
2423 cmp = ast_binary_new(ctx, INSTR_LT,
2424 (ast_expression*)index,
2425 (ast_expression*)parser_const_float(parser, middle));
2429 parseerror(parser, "internal error: failed to create comparison for array setter");
2433 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
2435 ast_delete(cmp); /* will delete left and right */
2436 parseerror(parser, "internal error: failed to create conditional jump for array setter");
2440 return (ast_expression*)ifthen;
2443 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
2445 lex_ctx ctx = ast_ctx(array);
2447 if (from+1 == afterend) {
2451 ast_array_index *subscript;
2452 int assignop = type_store_instr[value->expression.vtype];
2454 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
2455 assignop = INSTR_STORE_V;
2457 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
2461 ast_store *st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
2463 ast_delete(subscript);
2467 block = ast_block_new(ctx);
2473 vec_push(block->exprs, (ast_expression*)st);
2475 ret = ast_return_new(ctx, NULL);
2481 vec_push(block->exprs, (ast_expression*)ret);
2483 return (ast_expression*)block;
2485 ast_expression *left, *right;
2486 size_t diff = afterend - from;
2487 size_t middle = from + diff/2;
2488 left = array_setter_node(parser, array, index, value, from, middle);
2489 right = array_setter_node(parser, array, index, value, middle, afterend);
2490 return array_accessor_split(parser, array, index, middle, left, right);
2494 static ast_expression *array_field_setter_node(
2503 lex_ctx ctx = ast_ctx(array);
2505 if (from+1 == afterend) {
2509 ast_entfield *entfield;
2510 ast_array_index *subscript;
2511 int assignop = type_storep_instr[value->expression.vtype];
2513 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
2514 assignop = INSTR_STOREP_V;
2516 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
2520 entfield = ast_entfield_new_force(ctx,
2521 (ast_expression*)entity,
2522 (ast_expression*)subscript,
2523 (ast_expression*)subscript);
2525 ast_delete(subscript);
2529 ast_store *st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
2531 ast_delete(entfield);
2535 block = ast_block_new(ctx);
2541 vec_push(block->exprs, (ast_expression*)st);
2543 ret = ast_return_new(ctx, NULL);
2549 vec_push(block->exprs, (ast_expression*)ret);
2551 return (ast_expression*)block;
2553 ast_expression *left, *right;
2554 size_t diff = afterend - from;
2555 size_t middle = from + diff/2;
2556 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
2557 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
2558 return array_accessor_split(parser, array, index, middle, left, right);
2562 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
2564 lex_ctx ctx = ast_ctx(array);
2566 if (from+1 == afterend) {
2568 ast_array_index *subscript;
2570 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
2574 ret = ast_return_new(ctx, (ast_expression*)subscript);
2576 ast_delete(subscript);
2580 return (ast_expression*)ret;
2582 ast_expression *left, *right;
2583 size_t diff = afterend - from;
2584 size_t middle = from + diff/2;
2585 left = array_getter_node(parser, array, index, from, middle);
2586 right = array_getter_node(parser, array, index, middle, afterend);
2587 return array_accessor_split(parser, array, index, middle, left, right);
2591 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
2593 ast_function *func = NULL;
2594 ast_value *fval = NULL;
2595 ast_block *body = NULL;
2597 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
2599 parseerror(parser, "failed to create accessor function value");
2603 func = ast_function_new(ast_ctx(array), funcname, fval);
2606 parseerror(parser, "failed to create accessor function node");
2610 body = ast_block_new(ast_ctx(array));
2612 parseerror(parser, "failed to create block for array accessor");
2618 vec_push(func->blocks, body);
2621 vec_push(parser->accessors, fval);
2626 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
2628 ast_expression *root = NULL;
2629 ast_value *index = NULL;
2630 ast_value *value = NULL;
2634 if (!ast_istype(array->expression.next, ast_value)) {
2635 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
2639 if (!parser_create_array_accessor(parser, array, funcname, &fval))
2641 func = fval->constval.vfunc;
2642 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
2644 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
2645 value = ast_value_copy((ast_value*)array->expression.next);
2647 if (!index || !value) {
2648 parseerror(parser, "failed to create locals for array accessor");
2651 (void)!ast_value_set_name(value, "value"); /* not important */
2652 vec_push(fval->expression.params, index);
2653 vec_push(fval->expression.params, value);
2655 root = array_setter_node(parser, array, index, value, 0, array->expression.count);
2657 parseerror(parser, "failed to build accessor search tree");
2661 vec_push(func->blocks[0]->exprs, root);
2662 array->setter = fval;
2665 if (index) ast_delete(index);
2666 if (value) ast_delete(value);
2667 if (root) ast_delete(root);
2673 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
2675 ast_expression *root = NULL;
2676 ast_value *entity = NULL;
2677 ast_value *index = NULL;
2678 ast_value *value = NULL;
2682 if (!ast_istype(array->expression.next, ast_value)) {
2683 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
2687 if (!parser_create_array_accessor(parser, array, funcname, &fval))
2689 func = fval->constval.vfunc;
2690 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
2692 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
2693 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
2694 value = ast_value_copy((ast_value*)array->expression.next);
2695 if (!entity || !index || !value) {
2696 parseerror(parser, "failed to create locals for array accessor");
2699 (void)!ast_value_set_name(value, "value"); /* not important */
2700 vec_push(fval->expression.params, entity);
2701 vec_push(fval->expression.params, index);
2702 vec_push(fval->expression.params, value);
2704 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
2706 parseerror(parser, "failed to build accessor search tree");
2710 vec_push(func->blocks[0]->exprs, root);
2711 array->setter = fval;
2714 if (entity) ast_delete(entity);
2715 if (index) ast_delete(index);
2716 if (value) ast_delete(value);
2717 if (root) ast_delete(root);
2723 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
2725 ast_expression *root = NULL;
2726 ast_value *index = NULL;
2730 /* NOTE: checking array->expression.next rather than elemtype since
2731 * for fields elemtype is a temporary fieldtype.
2733 if (!ast_istype(array->expression.next, ast_value)) {
2734 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
2738 if (!parser_create_array_accessor(parser, array, funcname, &fval))
2740 func = fval->constval.vfunc;
2741 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
2743 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
2746 parseerror(parser, "failed to create locals for array accessor");
2749 vec_push(fval->expression.params, index);
2751 root = array_getter_node(parser, array, index, 0, array->expression.count);
2753 parseerror(parser, "failed to build accessor search tree");
2757 vec_push(func->blocks[0]->exprs, root);
2758 array->getter = fval;
2761 if (index) ast_delete(index);
2762 if (root) ast_delete(root);
2768 static ast_value *parse_typename(parser_t *parser, ast_value **storebase);
2769 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
2777 bool variadic = false;
2779 ctx = parser_ctx(parser);
2781 /* for the sake of less code we parse-in in this function */
2782 if (!parser_next(parser)) {
2783 parseerror(parser, "expected parameter list");
2789 /* parse variables until we hit a closing paren */
2790 while (parser->tok != ')') {
2792 /* there must be commas between them */
2793 if (parser->tok != ',') {
2794 parseerror(parser, "expected comma or end of parameter list");
2797 if (!parser_next(parser)) {
2798 parseerror(parser, "expected parameter");
2804 if (parser->tok == TOKEN_DOTS) {
2805 /* '...' indicates a varargs function */
2807 if (!parser_next(parser)) {
2808 parseerror(parser, "expected parameter");
2811 if (parser->tok != ')') {
2812 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
2818 /* for anything else just parse a typename */
2819 param = parse_typename(parser, NULL);
2822 vec_push(params, param);
2823 if (param->expression.vtype >= TYPE_VARIANT) {
2824 char typename[1024];
2825 ast_type_to_string((ast_expression*)param, typename, sizeof(typename));
2826 parseerror(parser, "type not supported as part of a parameter list: %s", typename);
2833 if (vec_size(params) > 8 && opts_standard == COMPILER_QCC)
2834 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
2837 if (!parser_next(parser)) {
2838 parseerror(parser, "parse error after typename");
2842 /* now turn 'var' into a function type */
2843 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
2844 fval->expression.next = (ast_expression*)var;
2845 fval->expression.variadic = variadic;
2848 var->expression.params = params;
2855 for (i = 0; i < vec_size(params); ++i)
2856 ast_delete(params[i]);
2861 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
2863 ast_expression *cexp;
2864 ast_value *cval, *tmp;
2867 ctx = parser_ctx(parser);
2869 if (!parser_next(parser)) {
2871 parseerror(parser, "expected array-size");
2875 cexp = parse_expression_leave(parser, true);
2877 if (!cexp || !ast_istype(cexp, ast_value)) {
2881 parseerror(parser, "expected array-size as constant positive integer");
2884 cval = (ast_value*)cexp;
2886 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
2887 tmp->expression.next = (ast_expression*)var;
2890 if (cval->expression.vtype == TYPE_INTEGER)
2891 tmp->expression.count = cval->constval.vint;
2892 else if (cval->expression.vtype == TYPE_FLOAT)
2893 tmp->expression.count = cval->constval.vfloat;
2897 parseerror(parser, "array-size must be a positive integer constant");
2902 if (parser->tok != ']') {
2904 parseerror(parser, "expected ']' after array-size");
2907 if (!parser_next(parser)) {
2909 parseerror(parser, "error after parsing array size");
2915 /* Parse a complete typename.
2916 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
2917 * but when parsing variables separated by comma
2918 * 'storebase' should point to where the base-type should be kept.
2919 * The base type makes up every bit of type information which comes *before* the
2922 * The following will be parsed in its entirety:
2924 * The 'basetype' in this case is 'void()'
2925 * and if there's a comma after it, say:
2927 * then the type-information 'void()' can be stored in 'storebase'
2929 static ast_value *parse_typename(parser_t *parser, ast_value **storebase)
2931 ast_value *var, *tmp;
2934 const char *name = NULL;
2935 bool isfield = false;
2936 bool wasarray = false;
2938 ctx = parser_ctx(parser);
2940 /* types may start with a dot */
2941 if (parser->tok == '.') {
2943 /* if we parsed a dot we need a typename now */
2944 if (!parser_next(parser)) {
2945 parseerror(parser, "expected typename for field definition");
2948 if (parser->tok != TOKEN_TYPENAME) {
2949 parseerror(parser, "expected typename");
2954 /* generate the basic type value */
2955 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
2956 /* do not yet turn into a field - remember:
2957 * .void() foo; is a field too
2958 * .void()() foo; is a function
2962 if (!parser_next(parser)) {
2964 parseerror(parser, "parse error after typename");
2968 /* an opening paren now starts the parameter-list of a function
2969 * this is where original-QC has parameter lists.
2970 * We allow a single parameter list here.
2971 * Much like fteqcc we don't allow `float()() x`
2973 if (parser->tok == '(') {
2974 var = parse_parameter_list(parser, var);
2979 /* store the base if requested */
2981 *storebase = ast_value_copy(var);
2983 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
2984 tmp->expression.next = (ast_expression*)*storebase;
2989 /* there may be a name now */
2990 if (parser->tok == TOKEN_IDENT) {
2991 name = util_strdup(parser_tokval(parser));
2993 if (!parser_next(parser)) {
2995 parseerror(parser, "error after variable or field declaration");
3000 /* now this may be an array */
3001 if (parser->tok == '[') {
3003 var = parse_arraysize(parser, var);
3008 /* This is the point where we can turn it into a field */
3010 /* turn it into a field if desired */
3011 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3012 tmp->expression.next = (ast_expression*)var;
3016 /* now there may be function parens again */
3017 if (parser->tok == '(' && opts_standard == COMPILER_QCC)
3018 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3019 if (parser->tok == '(' && wasarray)
3020 parseerror(parser, "arrays as part of a return type is not supported");
3021 while (parser->tok == '(') {
3022 var = parse_parameter_list(parser, var);
3031 /* finally name it */
3033 if (!ast_value_set_name(var, name)) {
3035 parseerror(parser, "internal error: failed to set name");
3038 /* free the name, ast_value_set_name duplicates */
3045 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields)
3049 ast_expression *old;
3053 ast_value *basetype = NULL;
3055 bool isparam = false;
3056 bool isvector = false;
3057 bool cleanvar = true;
3058 bool wasarray = false;
3060 varentry_t varent, ve[3];
3062 /* get the first complete variable */
3063 var = parse_typename(parser, &basetype);
3066 ast_delete(basetype);
3070 memset(&varent, 0, sizeof(varent));
3071 memset(&ve, 0, sizeof(ve));
3077 /* Part 0: finish the type */
3078 if (parser->tok == '(') {
3079 if (opts_standard == COMPILER_QCC)
3080 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3081 var = parse_parameter_list(parser, var);
3087 /* we only allow 1-dimensional arrays */
3088 if (parser->tok == '[') {
3090 var = parse_arraysize(parser, var);
3096 if (parser->tok == '(' && wasarray) {
3097 parseerror(parser, "arrays as part of a return type is not supported");
3098 /* we'll still parse the type completely for now */
3100 /* for functions returning functions */
3101 while (parser->tok == '(') {
3102 if (opts_standard == COMPILER_QCC)
3103 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3104 var = parse_parameter_list(parser, var);
3112 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
3113 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
3114 * is then filled with the previous definition and the parameter-names replaced.
3117 /* Deal with end_sys_ vars */
3119 if (!strcmp(var->name, "end_sys_globals")) {
3120 parser->crc_globals = vec_size(parser->globals);
3123 else if (!strcmp(var->name, "end_sys_fields")) {
3124 parser->crc_fields = vec_size(parser->fields);
3127 if (was_end && var->expression.vtype == TYPE_FIELD) {
3128 if (parsewarning(parser, WARN_END_SYS_FIELDS,
3129 "global '%s' hint should not be a field",
3130 parser_tokval(parser)))
3137 if (!nofields && var->expression.vtype == TYPE_FIELD)
3139 /* deal with field declarations */
3140 old = parser_find_field(parser, var->name);
3142 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
3143 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
3152 parseerror(parser, "field `%s` already declared here: %s:%i",
3153 var->name, ast_ctx(old).file, ast_ctx(old).line);
3158 if (opts_standard == COMPILER_QCC &&
3159 (old = parser_find_global(parser, var->name)))
3161 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
3162 parseerror(parser, "field `%s` already declared here: %s:%i",
3163 var->name, ast_ctx(old).file, ast_ctx(old).line);
3170 /* deal with other globals */
3171 old = parser_find_global(parser, var->name);
3172 if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
3174 /* This is a function which had a prototype */
3175 if (!ast_istype(old, ast_value)) {
3176 parseerror(parser, "internal error: prototype is not an ast_value");
3180 proto = (ast_value*)old;
3181 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
3182 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
3184 ast_ctx(proto).file, ast_ctx(proto).line);
3188 /* we need the new parameter-names */
3189 for (i = 0; i < vec_size(proto->expression.params); ++i)
3190 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
3198 parseerror(parser, "global `%s` already declared here: %s:%i",
3199 var->name, ast_ctx(old).file, ast_ctx(old).line);
3203 if (opts_standard == COMPILER_QCC &&
3204 (old = parser_find_field(parser, var->name)))
3206 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
3207 parseerror(parser, "global `%s` already declared here: %s:%i",
3208 var->name, ast_ctx(old).file, ast_ctx(old).line);
3215 else /* it's not a global */
3217 old = parser_find_local(parser, var->name, parser->blocklocal, &isparam);
3218 if (old && !isparam) {
3219 parseerror(parser, "local `%s` already declared here: %s:%i",
3220 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
3224 old = parser_find_local(parser, var->name, 0, &isparam);
3225 if (old && isparam) {
3226 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
3227 "local `%s` is shadowing a parameter", var->name))
3229 parseerror(parser, "local `%s` already declared here: %s:%i",
3230 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
3234 if (opts_standard != COMPILER_GMQCC) {
3243 * Create the global/local, and deal with vector types.
3246 if (var->expression.vtype == TYPE_VECTOR)
3248 else if (var->expression.vtype == TYPE_FIELD &&
3249 var->expression.next->expression.vtype == TYPE_VECTOR)
3253 if (!create_vector_members(parser, var, ve)) {
3259 varent.name = util_strdup(var->name);
3260 varent.var = (ast_expression*)var;
3263 /* deal with global variables, fields, functions */
3264 if (!nofields && var->expression.vtype == TYPE_FIELD) {
3265 vec_push(parser->fields, varent);
3267 for (i = 0; i < 3; ++i)
3268 vec_push(parser->fields, ve[i]);
3272 vec_push(parser->globals, varent);
3274 for (i = 0; i < 3; ++i)
3275 vec_push(parser->globals, ve[i]);
3279 vec_push(parser->locals, varent);
3280 vec_push(localblock->locals, var);
3282 for (i = 0; i < 3; ++i) {
3283 vec_push(parser->locals, ve[i]);
3284 ast_block_collect(localblock, ve[i].var);
3285 ve[i].var = NULL; /* from here it's being collected in the block */
3291 ve[0].name = ve[1].name = ve[2].name = NULL;
3292 ve[0].var = ve[1].var = ve[2].var = NULL;
3298 if (var->expression.vtype == TYPE_ARRAY) {
3300 snprintf(name, sizeof(name), "%s##SET", var->name);
3301 if (!parser_create_array_setter(parser, var, name))
3303 snprintf(name, sizeof(name), "%s##GET", var->name);
3304 if (!parser_create_array_getter(parser, var, var->expression.next, name))
3307 else if (!localblock && !nofields &&
3308 var->expression.vtype == TYPE_FIELD &&
3309 var->expression.next->expression.vtype == TYPE_ARRAY)
3312 ast_expression *telem;
3314 ast_value *array = (ast_value*)var->expression.next;
3316 if (!ast_istype(var->expression.next, ast_value)) {
3317 parseerror(parser, "internal error: field element type must be an ast_value");
3321 snprintf(name, sizeof(name), "%s##SETF", var->name);
3322 if (!parser_create_array_field_setter(parser, array, name))
3325 telem = ast_type_copy(ast_ctx(var), array->expression.next);
3326 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
3327 tfield->expression.next = telem;
3328 snprintf(name, sizeof(name), "%s##GETFP", var->name);
3329 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
3337 if (parser->tok == ';') {
3338 ast_delete(basetype);
3339 if (!parser_next(parser)) {
3340 parseerror(parser, "error after variable declaration");
3346 if (parser->tok == ',')
3349 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
3350 parseerror(parser, "missing comma or semicolon while parsing variables");
3354 if (localblock && opts_standard == COMPILER_QCC) {
3355 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
3356 "initializing expression turns variable `%s` into a constant in this standard",
3363 if (parser->tok != '{') {
3364 if (parser->tok != '=') {
3365 parseerror(parser, "missing semicolon or initializer");
3369 if (!parser_next(parser)) {
3370 parseerror(parser, "error parsing initializer");
3374 else if (opts_standard == COMPILER_QCC) {
3375 parseerror(parser, "expected '=' before function body in this standard");
3378 if (parser->tok == '#') {
3382 parseerror(parser, "cannot declare builtins within functions");
3385 if (var->expression.vtype != TYPE_FUNCTION) {
3386 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
3389 if (!parser_next(parser)) {
3390 parseerror(parser, "expected builtin number");
3393 if (parser->tok != TOKEN_INTCONST) {
3394 parseerror(parser, "builtin number must be an integer constant");
3397 if (parser_token(parser)->constval.i <= 0) {
3398 parseerror(parser, "builtin number must be an integer greater than zero");
3402 func = ast_function_new(ast_ctx(var), var->name, var);
3404 parseerror(parser, "failed to allocate function for `%s`", var->name);
3407 vec_push(parser->functions, func);
3409 func->builtin = -parser_token(parser)->constval.i;
3411 if (!parser_next(parser)) {
3412 parseerror(parser, "expected comma or semicolon");
3413 ast_function_delete(func);
3414 var->constval.vfunc = NULL;
3418 else if (parser->tok == '{' || parser->tok == '[')
3421 parseerror(parser, "cannot declare functions within functions");
3425 if (!parse_function_body(parser, var))
3427 ast_delete(basetype);
3430 ast_expression *cexp;
3433 cexp = parse_expression_leave(parser, true);
3438 cval = (ast_value*)cexp;
3439 if (!ast_istype(cval, ast_value) || !cval->isconst)
3440 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
3443 var->isconst = true;
3444 if (cval->expression.vtype == TYPE_STRING)
3445 var->constval.vstring = parser_strdup(cval->constval.vstring);
3447 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
3451 shunt sy = { NULL, NULL };
3452 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
3453 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
3454 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
3455 if (!parser_sy_pop(parser, &sy))
3458 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
3459 parseerror(parser, "internal error: leaked operands");
3460 vec_push(localblock->exprs, (ast_expression*)sy.out[0].out);
3468 if (parser->tok == ',') {
3469 if (!parser_next(parser)) {
3470 parseerror(parser, "expected another variable");
3474 if (parser->tok != TOKEN_IDENT) {
3475 parseerror(parser, "expected another variable");
3478 var = ast_value_copy(basetype);
3480 ast_value_set_name(var, parser_tokval(parser));
3481 if (!parser_next(parser)) {
3482 parseerror(parser, "error parsing variable declaration");
3488 if (parser->tok != ';') {
3489 parseerror(parser, "missing semicolon after variables");
3493 if (!parser_next(parser)) {
3494 parseerror(parser, "parse error after variable declaration");
3498 ast_delete(basetype);
3502 if (cleanvar && var)
3504 ast_delete(basetype);
3508 ast_delete(basetype);
3509 if (cleanvar && var)
3511 if (varent.name) mem_d(varent.name);
3512 if (ve[0].name) mem_d(ve[0].name);
3513 if (ve[1].name) mem_d(ve[1].name);
3514 if (ve[2].name) mem_d(ve[2].name);
3515 if (ve[0].var) mem_d(ve[0].var);
3516 if (ve[1].var) mem_d(ve[1].var);
3517 if (ve[2].var) mem_d(ve[2].var);
3521 static bool parser_global_statement(parser_t *parser)
3523 if (parser->tok == TOKEN_TYPENAME || parser->tok == '.')
3525 return parse_variable(parser, NULL, false);
3527 else if (parser->tok == TOKEN_KEYWORD)
3529 /* handle 'var' and 'const' */
3530 if (!strcmp(parser_tokval(parser), "var")) {
3531 if (!parser_next(parser)) {
3532 parseerror(parser, "expected variable declaration after 'var'");
3535 return parse_variable(parser, NULL, true);
3539 else if (parser->tok == '$')
3541 if (!parser_next(parser)) {
3542 parseerror(parser, "parse error");
3548 parseerror(parser, "unexpected token: %s", parser->lex->tok.value);
3554 static parser_t *parser;
3559 parser = (parser_t*)mem_a(sizeof(parser_t));
3563 memset(parser, 0, sizeof(*parser));
3565 for (i = 0; i < operator_count; ++i) {
3566 if (operators[i].id == opid1('=')) {
3567 parser->assign_op = operators+i;
3571 if (!parser->assign_op) {
3572 printf("internal error: initializing parser: failed to find assign operator\n");
3579 bool parser_compile()
3581 /* initial lexer/parser state */
3582 parser->lex->flags.noops = true;
3584 if (parser_next(parser))
3586 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
3588 if (!parser_global_statement(parser)) {
3589 if (parser->tok == TOKEN_EOF)
3590 parseerror(parser, "unexpected eof");
3591 else if (!parser->errors)
3592 parseerror(parser, "there have been errors, bailing out");
3593 lex_close(parser->lex);
3599 parseerror(parser, "parse error");
3600 lex_close(parser->lex);
3605 lex_close(parser->lex);
3608 return !parser->errors;
3611 bool parser_compile_file(const char *filename)
3613 parser->lex = lex_open(filename);
3615 con_err("failed to open file \"%s\"\n", filename);
3618 return parser_compile();
3621 bool parser_compile_string_len(const char *name, const char *str, size_t len)
3623 parser->lex = lex_open_string(str, len, name);
3625 con_err("failed to create lexer for string \"%s\"\n", name);
3628 return parser_compile();
3631 bool parser_compile_string(const char *name, const char *str)
3633 parser->lex = lex_open_string(str, strlen(str), name);
3635 con_err("failed to create lexer for string \"%s\"\n", name);
3638 return parser_compile();
3641 void parser_cleanup()
3644 for (i = 0; i < vec_size(parser->accessors); ++i) {
3645 ast_delete(parser->accessors[i]->constval.vfunc);
3646 parser->accessors[i]->constval.vfunc = NULL;
3647 ast_delete(parser->accessors[i]);
3649 for (i = 0; i < vec_size(parser->functions); ++i) {
3650 ast_delete(parser->functions[i]);
3652 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
3653 ast_delete(parser->imm_vector[i]);
3655 for (i = 0; i < vec_size(parser->imm_string); ++i) {
3656 ast_delete(parser->imm_string[i]);
3658 for (i = 0; i < vec_size(parser->imm_float); ++i) {
3659 ast_delete(parser->imm_float[i]);
3661 for (i = 0; i < vec_size(parser->fields); ++i) {
3662 ast_delete(parser->fields[i].var);
3663 mem_d(parser->fields[i].name);
3665 for (i = 0; i < vec_size(parser->globals); ++i) {
3666 ast_delete(parser->globals[i].var);
3667 mem_d(parser->globals[i].name);
3669 vec_free(parser->accessors);
3670 vec_free(parser->functions);
3671 vec_free(parser->imm_vector);
3672 vec_free(parser->imm_string);
3673 vec_free(parser->imm_float);
3674 vec_free(parser->globals);
3675 vec_free(parser->fields);
3676 vec_free(parser->locals);
3681 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
3683 return util_crc16(old, str, strlen(str));
3686 static void progdefs_crc_file(const char *str)
3688 /* write to progdefs.h here */
3691 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
3693 old = progdefs_crc_sum(old, str);
3694 progdefs_crc_file(str);
3698 static void generate_checksum(parser_t *parser)
3700 uint16_t crc = 0xFFFF;
3703 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
3704 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
3706 progdefs_crc_file("\tint\tpad;\n");
3707 progdefs_crc_file("\tint\tofs_return[3];\n");
3708 progdefs_crc_file("\tint\tofs_parm0[3];\n");
3709 progdefs_crc_file("\tint\tofs_parm1[3];\n");
3710 progdefs_crc_file("\tint\tofs_parm2[3];\n");
3711 progdefs_crc_file("\tint\tofs_parm3[3];\n");
3712 progdefs_crc_file("\tint\tofs_parm4[3];\n");
3713 progdefs_crc_file("\tint\tofs_parm5[3];\n");
3714 progdefs_crc_file("\tint\tofs_parm6[3];\n");
3715 progdefs_crc_file("\tint\tofs_parm7[3];\n");
3717 for (i = 0; i < parser->crc_globals; ++i) {
3718 if (!ast_istype(parser->globals[i].var, ast_value))
3720 switch (parser->globals[i].var->expression.vtype) {
3721 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
3722 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
3723 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
3724 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
3726 crc = progdefs_crc_both(crc, "\tint\t");
3729 crc = progdefs_crc_both(crc, parser->globals[i].name);
3730 crc = progdefs_crc_both(crc, ";\n");
3732 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
3733 for (i = 0; i < parser->crc_fields; ++i) {
3734 if (!ast_istype(parser->fields[i].var, ast_value))
3736 switch (parser->fields[i].var->expression.next->expression.vtype) {
3737 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
3738 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
3739 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
3740 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
3742 crc = progdefs_crc_both(crc, "\tint\t");
3745 crc = progdefs_crc_both(crc, parser->fields[i].name);
3746 crc = progdefs_crc_both(crc, ";\n");
3748 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
3753 bool parser_finish(const char *output)
3759 if (!parser->errors)
3761 ir = ir_builder_new("gmqcc_out");
3763 con_out("failed to allocate builder\n");
3767 for (i = 0; i < vec_size(parser->fields); ++i) {
3770 if (!ast_istype(parser->fields[i].var, ast_value))
3772 field = (ast_value*)parser->fields[i].var;
3773 isconst = field->isconst;
3774 field->isconst = false;
3775 if (!ast_global_codegen((ast_value*)field, ir, true)) {
3776 con_out("failed to generate field %s\n", field->name);
3777 ir_builder_delete(ir);
3782 ast_expression *subtype;
3783 field->isconst = true;
3784 subtype = field->expression.next;
3785 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
3786 if (subtype->expression.vtype == TYPE_FIELD)
3787 ifld->fieldtype = subtype->expression.next->expression.vtype;
3788 else if (subtype->expression.vtype == TYPE_FUNCTION)
3789 ifld->outtype = subtype->expression.next->expression.vtype;
3790 (void)!ir_value_set_field(field->ir_v, ifld);
3793 for (i = 0; i < vec_size(parser->globals); ++i) {
3795 if (!ast_istype(parser->globals[i].var, ast_value))
3797 asvalue = (ast_value*)(parser->globals[i].var);
3798 if (!asvalue->uses && !asvalue->isconst && asvalue->expression.vtype != TYPE_FUNCTION) {
3799 if (strcmp(asvalue->name, "end_sys_globals") &&
3800 strcmp(asvalue->name, "end_sys_fields"))
3802 retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
3803 "unused global: `%s`", asvalue->name);
3806 if (!ast_global_codegen(asvalue, ir, false)) {
3807 con_out("failed to generate global %s\n", parser->globals[i].name);
3808 ir_builder_delete(ir);
3812 for (i = 0; i < vec_size(parser->imm_float); ++i) {
3813 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
3814 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
3815 ir_builder_delete(ir);
3819 for (i = 0; i < vec_size(parser->imm_string); ++i) {
3820 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
3821 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
3822 ir_builder_delete(ir);
3826 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
3827 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
3828 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
3829 ir_builder_delete(ir);
3833 for (i = 0; i < vec_size(parser->globals); ++i) {
3835 if (!ast_istype(parser->globals[i].var, ast_value))
3837 asvalue = (ast_value*)(parser->globals[i].var);
3838 if (asvalue->setter) {
3839 if (!ast_global_codegen(asvalue->setter, ir, false) ||
3840 !ast_function_codegen(asvalue->setter->constval.vfunc, ir) ||
3841 !ir_function_finalize(asvalue->setter->constval.vfunc->ir_func))
3843 printf("failed to generate setter for %s\n", parser->globals[i].name);
3844 ir_builder_delete(ir);
3848 if (asvalue->getter) {
3849 if (!ast_global_codegen(asvalue->getter, ir, false) ||
3850 !ast_function_codegen(asvalue->getter->constval.vfunc, ir) ||
3851 !ir_function_finalize(asvalue->getter->constval.vfunc->ir_func))
3853 printf("failed to generate getter for %s\n", parser->globals[i].name);
3854 ir_builder_delete(ir);
3859 for (i = 0; i < vec_size(parser->fields); ++i) {
3861 asvalue = (ast_value*)(parser->fields[i].var->expression.next);
3863 if (!ast_istype((ast_expression*)asvalue, ast_value))
3865 if (asvalue->expression.vtype != TYPE_ARRAY)
3867 if (asvalue->setter) {
3868 if (!ast_global_codegen(asvalue->setter, ir, false) ||
3869 !ast_function_codegen(asvalue->setter->constval.vfunc, ir) ||
3870 !ir_function_finalize(asvalue->setter->constval.vfunc->ir_func))
3872 printf("failed to generate setter for %s\n", parser->fields[i].name);
3873 ir_builder_delete(ir);
3877 if (asvalue->getter) {
3878 if (!ast_global_codegen(asvalue->getter, ir, false) ||
3879 !ast_function_codegen(asvalue->getter->constval.vfunc, ir) ||
3880 !ir_function_finalize(asvalue->getter->constval.vfunc->ir_func))
3882 printf("failed to generate getter for %s\n", parser->fields[i].name);
3883 ir_builder_delete(ir);
3888 for (i = 0; i < vec_size(parser->functions); ++i) {
3889 if (!ast_function_codegen(parser->functions[i], ir)) {
3890 con_out("failed to generate function %s\n", parser->functions[i]->name);
3891 ir_builder_delete(ir);
3894 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
3895 con_out("failed to finalize function %s\n", parser->functions[i]->name);
3896 ir_builder_delete(ir);
3903 ir_builder_dump(ir, con_out);
3905 generate_checksum(parser);
3907 if (!ir_builder_generate(ir, output)) {
3908 con_out("*** failed to generate output file\n");
3909 ir_builder_delete(ir);
3914 ir_builder_delete(ir);
3918 con_out("*** there were compile errors\n");