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 const double compare = parser->imm_float[i]->constval.vfloat;
171 if (memcmp((const void*)&compare, (const void *)&d, sizeof(double)) == 0)
172 return parser->imm_float[i];
174 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_FLOAT);
176 out->constval.vfloat = d;
177 vec_push(parser->imm_float, out);
181 static ast_value* parser_const_float_0(parser_t *parser)
183 if (!parser->imm_float_zero)
184 parser->imm_float_zero = parser_const_float(parser, 0);
185 return parser->imm_float_zero;
188 static char *parser_strdup(const char *str)
191 /* actually dup empty strings */
192 char *out = mem_a(1);
196 return util_strdup(str);
199 static ast_value* parser_const_string(parser_t *parser, const char *str)
203 for (i = 0; i < vec_size(parser->imm_string); ++i) {
204 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
205 return parser->imm_string[i];
207 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
209 out->constval.vstring = parser_strdup(str);
210 vec_push(parser->imm_string, out);
214 static ast_value* parser_const_vector(parser_t *parser, vector v)
218 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
219 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
220 return parser->imm_vector[i];
222 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
224 out->constval.vvec = v;
225 vec_push(parser->imm_vector, out);
229 static ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
235 return parser_const_vector(parser, v);
238 static ast_value* parser_const_vector_0(parser_t *parser)
240 if (!parser->imm_vector_zero)
241 parser->imm_vector_zero = parser_const_vector_f(parser, 0, 0, 0);
242 return parser->imm_vector_zero;
245 static ast_expression* parser_find_field(parser_t *parser, const char *name)
248 for (i = 0; i < vec_size(parser->fields); ++i) {
249 if (!strcmp(parser->fields[i].name, name))
250 return parser->fields[i].var;
255 static ast_expression* parser_find_global(parser_t *parser, const char *name)
258 for (i = 0; i < vec_size(parser->globals); ++i) {
259 if (!strcmp(parser->globals[i].name, name))
260 return parser->globals[i].var;
265 static ast_expression* parser_find_param(parser_t *parser, const char *name)
269 if (!parser->function)
271 fun = parser->function->vtype;
272 for (i = 0; i < vec_size(fun->expression.params); ++i) {
273 if (!strcmp(fun->expression.params[i]->name, name))
274 return (ast_expression*)(fun->expression.params[i]);
279 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
283 for (i = vec_size(parser->locals); i > upto;) {
285 if (!strcmp(parser->locals[i].name, name))
286 return parser->locals[i].var;
289 return parser_find_param(parser, name);
292 static ast_expression* parser_find_var(parser_t *parser, const char *name)
296 v = parser_find_local(parser, name, 0, &dummy);
297 if (!v) v = parser_find_global(parser, name);
303 size_t etype; /* 0 = expression, others are operators */
307 ast_block *block; /* for commas and function calls */
316 #define SY_PAREN_EXPR '('
317 #define SY_PAREN_FUNC 'f'
318 #define SY_PAREN_INDEX '['
320 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
331 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
335 e.out = (ast_expression*)v;
342 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
344 e.etype = 1 + (op - operators);
353 static sy_elem syparen(lex_ctx ctx, int p, size_t off) {
365 # define DEBUGSHUNTDO(x) x
367 # define DEBUGSHUNTDO(x)
370 /* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
371 * so we need to rotate it to become ent.(foo[n]).
373 static bool rotate_entfield_array_index_nodes(ast_expression **out)
375 ast_array_index *index;
376 ast_entfield *entfield;
380 ast_expression *entity;
382 lex_ctx ctx = ast_ctx(*out);
384 if (!ast_istype(*out, ast_array_index))
386 index = (ast_array_index*)*out;
388 if (!ast_istype(index->array, ast_entfield))
390 entfield = (ast_entfield*)index->array;
392 if (!ast_istype(entfield->field, ast_value))
394 field = (ast_value*)entfield->field;
397 entity = entfield->entity;
401 index = ast_array_index_new(ctx, (ast_expression*)field, sub);
402 entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
403 *out = (ast_expression*)entfield;
408 static bool parser_sy_pop(parser_t *parser, shunt *sy)
412 ast_expression *out = NULL;
413 ast_expression *exprs[3];
414 ast_block *blocks[3];
415 ast_value *asvalue[3];
417 qcint generated_op = 0;
422 if (!vec_size(sy->ops)) {
423 parseerror(parser, "internal error: missing operator");
427 if (vec_last(sy->ops).paren) {
428 parseerror(parser, "unmatched parenthesis");
432 op = &operators[vec_last(sy->ops).etype - 1];
433 ctx = vec_last(sy->ops).ctx;
435 DEBUGSHUNTDO(con_out("apply %s\n", op->op));
437 if (vec_size(sy->out) < op->operands) {
438 parseerror(parser, "internal error: not enough operands: %i (operator %s (%i))", vec_size(sy->out),
439 op->op, (int)op->id);
443 vec_shrinkby(sy->ops, 1);
445 vec_shrinkby(sy->out, op->operands);
446 for (i = 0; i < op->operands; ++i) {
447 exprs[i] = sy->out[vec_size(sy->out)+i].out;
448 blocks[i] = sy->out[vec_size(sy->out)+i].block;
449 asvalue[i] = (ast_value*)exprs[i];
452 if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
453 parseerror(parser, "internal error: operator cannot be applied on empty blocks");
457 #define NotSameType(T) \
458 (exprs[0]->expression.vtype != exprs[1]->expression.vtype || \
459 exprs[0]->expression.vtype != T)
460 #define CanConstFold1(A) \
461 (ast_istype((A), ast_value) && ((ast_value*)(A))->isconst)
462 #define CanConstFold(A, B) \
463 (CanConstFold1(A) && CanConstFold1(B))
464 #define ConstV(i) (asvalue[(i)]->constval.vvec)
465 #define ConstF(i) (asvalue[(i)]->constval.vfloat)
466 #define ConstS(i) (asvalue[(i)]->constval.vstring)
470 parseerror(parser, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
474 if (exprs[0]->expression.vtype == TYPE_ENTITY) {
475 if (exprs[1]->expression.vtype != TYPE_FIELD) {
476 parseerror(parser, "type error: right hand of member-operand should be an entity-field");
479 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
481 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
482 parseerror(parser, "internal error: vector access is not supposed to be handled at this point");
486 parseerror(parser, "type error: member-of operator on something that is not an entity or vector");
492 if (exprs[0]->expression.vtype != TYPE_ARRAY &&
493 !(exprs[0]->expression.vtype == TYPE_FIELD &&
494 exprs[0]->expression.next->expression.vtype == TYPE_ARRAY))
496 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
497 parseerror(parser, "cannot index value of type %s", ty1);
500 if (exprs[1]->expression.vtype != TYPE_FLOAT) {
501 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
502 parseerror(parser, "index must be of type float, not %s", ty1);
505 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
506 if (rotate_entfield_array_index_nodes(&out))
508 if (opts_standard != COMPILER_GMQCC) {
509 /* this error doesn't need to make us bail out */
510 (void)!parsewarning(parser, WARN_EXTENSIONS,
511 "accessing array-field members of an entity without parenthesis\n"
512 " -> this is an extension from -std=gmqcc");
519 vec_push(blocks[0]->exprs, exprs[1]);
521 blocks[0] = ast_block_new(ctx);
522 vec_push(blocks[0]->exprs, exprs[0]);
523 vec_push(blocks[0]->exprs, exprs[1]);
525 if (!ast_block_set_type(blocks[0], exprs[1]))
528 vec_push(sy->out, syblock(ctx, blocks[0]));
532 switch (exprs[0]->expression.vtype) {
534 if (CanConstFold1(exprs[0]))
535 out = (ast_expression*)parser_const_float(parser, -ConstF(0));
537 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
538 (ast_expression*)parser_const_float_0(parser),
542 if (CanConstFold1(exprs[0]))
543 out = (ast_expression*)parser_const_vector_f(parser,
544 -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
546 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
547 (ast_expression*)parser_const_vector_0(parser),
551 parseerror(parser, "invalid types used in expression: cannot negate type %s",
552 type_name[exprs[0]->expression.vtype]);
558 switch (exprs[0]->expression.vtype) {
560 if (CanConstFold1(exprs[0]))
561 out = (ast_expression*)parser_const_float(parser, !ConstF(0));
563 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
566 if (CanConstFold1(exprs[0]))
567 out = (ast_expression*)parser_const_float(parser,
568 (!ConstV(0).x && !ConstV(0).y && !ConstV(0).z));
570 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
573 if (CanConstFold1(exprs[0]))
574 out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
576 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
578 /* we don't constant-fold NOT for these types */
580 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
583 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
586 parseerror(parser, "invalid types used in expression: cannot logically negate type %s",
587 type_name[exprs[0]->expression.vtype]);
593 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
594 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
596 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
597 type_name[exprs[0]->expression.vtype],
598 type_name[exprs[1]->expression.vtype]);
601 switch (exprs[0]->expression.vtype) {
603 if (CanConstFold(exprs[0], exprs[1]))
605 out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
608 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
611 if (CanConstFold(exprs[0], exprs[1]))
612 out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
614 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
617 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
618 type_name[exprs[0]->expression.vtype],
619 type_name[exprs[1]->expression.vtype]);
624 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
625 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
627 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
628 type_name[exprs[1]->expression.vtype],
629 type_name[exprs[0]->expression.vtype]);
632 switch (exprs[0]->expression.vtype) {
634 if (CanConstFold(exprs[0], exprs[1]))
635 out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
637 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
640 if (CanConstFold(exprs[0], exprs[1]))
641 out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
643 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
646 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
647 type_name[exprs[1]->expression.vtype],
648 type_name[exprs[0]->expression.vtype]);
653 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
654 exprs[0]->expression.vtype != TYPE_VECTOR &&
655 exprs[0]->expression.vtype != TYPE_FLOAT &&
656 exprs[1]->expression.vtype != TYPE_VECTOR &&
657 exprs[1]->expression.vtype != TYPE_FLOAT)
659 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
660 type_name[exprs[1]->expression.vtype],
661 type_name[exprs[0]->expression.vtype]);
664 switch (exprs[0]->expression.vtype) {
666 if (exprs[1]->expression.vtype == TYPE_VECTOR)
668 if (CanConstFold(exprs[0], exprs[1]))
669 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
671 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
675 if (CanConstFold(exprs[0], exprs[1]))
676 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
678 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
682 if (exprs[1]->expression.vtype == TYPE_FLOAT)
684 if (CanConstFold(exprs[0], exprs[1]))
685 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
687 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
691 if (CanConstFold(exprs[0], exprs[1]))
692 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
694 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
698 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
699 type_name[exprs[1]->expression.vtype],
700 type_name[exprs[0]->expression.vtype]);
705 if (NotSameType(TYPE_FLOAT)) {
706 parseerror(parser, "invalid types used in expression: cannot divide types %s and %s",
707 type_name[exprs[0]->expression.vtype],
708 type_name[exprs[1]->expression.vtype]);
711 if (CanConstFold(exprs[0], exprs[1]))
712 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
714 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
718 parseerror(parser, "qc does not have a modulo operator");
722 if (NotSameType(TYPE_FLOAT)) {
723 parseerror(parser, "invalid types used in expression: cannot perform bit operations between types %s and %s",
724 type_name[exprs[0]->expression.vtype],
725 type_name[exprs[1]->expression.vtype]);
728 if (CanConstFold(exprs[0], exprs[1]))
729 out = (ast_expression*)parser_const_float(parser,
730 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
731 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
733 out = (ast_expression*)ast_binary_new(ctx,
734 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
738 parseerror(parser, "TODO: bitxor");
743 case opid3('<','<','='):
744 case opid3('>','>','='):
745 parseerror(parser, "TODO: shifts");
749 generated_op += 1; /* INSTR_OR */
751 generated_op += INSTR_AND;
752 if (NotSameType(TYPE_FLOAT)) {
753 parseerror(parser, "invalid types used in expression: cannot perform logical operations between types %s and %s",
754 type_name[exprs[0]->expression.vtype],
755 type_name[exprs[1]->expression.vtype]);
756 parseerror(parser, "TODO: logical ops for arbitrary types using INSTR_NOT");
757 parseerror(parser, "TODO: optional early out");
760 if (opts_standard == COMPILER_GMQCC)
761 con_out("TODO: early out logic\n");
762 if (CanConstFold(exprs[0], exprs[1]))
763 out = (ast_expression*)parser_const_float(parser,
764 (generated_op == INSTR_OR ? (ConstF(0) || ConstF(1)) : (ConstF(0) && ConstF(1))));
766 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
770 if (exprs[1]->expression.vtype != exprs[2]->expression.vtype) {
771 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
772 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
773 parseerror(parser, "iperands of ternary expression must have the same type, got %s and %s", ty1, ty2);
776 if (CanConstFold1(exprs[0]))
777 out = (ConstF(0) ? exprs[1] : exprs[2]);
779 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
783 generated_op += 1; /* INSTR_GT */
785 generated_op += 1; /* INSTR_LT */
786 case opid2('>', '='):
787 generated_op += 1; /* INSTR_GE */
788 case opid2('<', '='):
789 generated_op += INSTR_LE;
790 if (NotSameType(TYPE_FLOAT)) {
791 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
792 type_name[exprs[0]->expression.vtype],
793 type_name[exprs[1]->expression.vtype]);
796 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
798 case opid2('!', '='):
799 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
800 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
801 type_name[exprs[0]->expression.vtype],
802 type_name[exprs[1]->expression.vtype]);
805 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
807 case opid2('=', '='):
808 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
809 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
810 type_name[exprs[0]->expression.vtype],
811 type_name[exprs[1]->expression.vtype]);
814 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
818 if (ast_istype(exprs[0], ast_entfield)) {
819 ast_expression *field = ((ast_entfield*)exprs[0])->field;
820 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
821 exprs[0]->expression.vtype == TYPE_FIELD &&
822 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
824 assignop = type_storep_instr[TYPE_VECTOR];
827 assignop = type_storep_instr[exprs[0]->expression.vtype];
828 if (!ast_compare_type(field->expression.next, exprs[1])) {
829 ast_type_to_string(field->expression.next, ty1, sizeof(ty1));
830 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
831 if (opts_standard == COMPILER_QCC &&
832 field->expression.next->expression.vtype == TYPE_FUNCTION &&
833 exprs[1]->expression.vtype == TYPE_FUNCTION)
835 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
836 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
842 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
847 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
848 exprs[0]->expression.vtype == TYPE_FIELD &&
849 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
851 assignop = type_store_instr[TYPE_VECTOR];
854 assignop = type_store_instr[exprs[0]->expression.vtype];
857 if (assignop == AINSTR_END) {
858 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
859 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
860 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
862 else if (!ast_compare_type(exprs[0], exprs[1])) {
863 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
864 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
865 if (opts_standard == COMPILER_QCC &&
866 exprs[0]->expression.vtype == TYPE_FUNCTION &&
867 exprs[1]->expression.vtype == TYPE_FUNCTION)
869 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
870 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
876 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
879 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
883 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
884 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
886 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
887 type_name[exprs[0]->expression.vtype],
888 type_name[exprs[1]->expression.vtype]);
891 if (ast_istype(exprs[0], ast_entfield))
892 assignop = type_storep_instr[exprs[0]->expression.vtype];
894 assignop = type_store_instr[exprs[0]->expression.vtype];
895 switch (exprs[0]->expression.vtype) {
897 out = (ast_expression*)ast_binstore_new(ctx, assignop,
898 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
902 out = (ast_expression*)ast_binstore_new(ctx, assignop,
903 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
907 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
908 type_name[exprs[0]->expression.vtype],
909 type_name[exprs[1]->expression.vtype]);
917 parseerror(parser, "failed to apply operand %s", op->op);
921 DEBUGSHUNTDO(con_out("applied %s\n", op->op));
922 vec_push(sy->out, syexp(ctx, out));
926 static bool parser_close_call(parser_t *parser, shunt *sy)
928 /* was a function call */
935 vec_shrinkby(sy->ops, 1);
936 fid = sy->ops[vec_size(sy->ops)].off;
938 /* out[fid] is the function
939 * everything above is parameters...
941 * 1 params = ast_expression
945 if (vec_size(sy->out) < 1 || vec_size(sy->out) <= fid) {
946 parseerror(parser, "internal error: function call needs function and parameter list...");
950 fun = sy->out[fid].out;
952 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
954 parseerror(parser, "out of memory");
958 if (fid+1 == vec_size(sy->out)) {
961 } else if (fid+2 == vec_size(sy->out)) {
963 vec_shrinkby(sy->out, 1);
964 params = sy->out[vec_size(sy->out)].block;
968 vec_push(call->params, sy->out[vec_size(sy->out)].out);
970 paramcount = vec_size(params->exprs);
971 call->params = params->exprs;
972 params->exprs = NULL;
975 if (!ast_call_check_types(call))
978 parseerror(parser, "invalid function call");
982 /* overwrite fid, the function, with a call */
983 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
985 if (fun->expression.vtype != TYPE_FUNCTION) {
986 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
990 if (!fun->expression.next) {
991 parseerror(parser, "could not determine function return type");
994 if (vec_size(fun->expression.params) != paramcount &&
995 !(fun->expression.variadic &&
996 vec_size(fun->expression.params) < paramcount))
999 const char *fewmany = (vec_size(fun->expression.params) > paramcount) ? "few" : "many";
1001 fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1002 if (opts_standard == COMPILER_GMQCC)
1005 parseerror(parser, "too %s parameters for call to %s: expected %i, got %i\n"
1006 " -> `%s` has been declared here: %s:%i",
1007 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1008 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1010 parseerror(parser, "too %s parameters for function call: expected %i, got %i\n"
1011 " -> `%s` has been declared here: %s:%i",
1012 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1013 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1019 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1020 "too %s parameters for call to %s: expected %i, got %i\n"
1021 " -> `%s` has been declared here: %s:%i",
1022 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1023 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1025 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1026 "too %s parameters for function call: expected %i, got %i\n"
1027 " -> `%s` has been declared here: %s:%i",
1028 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1029 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1037 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
1039 if (!vec_size(sy->ops)) {
1040 parseerror(parser, "unmatched closing paren");
1043 /* this would for bit a + (x) because there are no operators inside (x)
1044 if (sy->ops[vec_size(sy->ops)-1].paren == 1) {
1045 parseerror(parser, "empty parenthesis expression");
1049 while (vec_size(sy->ops)) {
1050 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_FUNC) {
1051 if (!parser_close_call(parser, sy))
1055 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_EXPR) {
1056 vec_shrinkby(sy->ops, 1);
1057 return !functions_only;
1059 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_INDEX) {
1062 /* pop off the parenthesis */
1063 vec_shrinkby(sy->ops, 1);
1064 /* then apply the index operator */
1065 if (!parser_sy_pop(parser, sy))
1069 if (!parser_sy_pop(parser, sy))
1075 static void parser_reclassify_token(parser_t *parser)
1078 for (i = 0; i < operator_count; ++i) {
1079 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1080 parser->tok = TOKEN_OPERATOR;
1086 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma)
1088 ast_expression *expr = NULL;
1090 bool wantop = false;
1091 bool gotmemberof = false;
1093 /* count the parens because an if starts with one, so the
1094 * end of a condition is an unmatched closing paren
1102 parser->lex->flags.noops = false;
1104 parser_reclassify_token(parser);
1109 gotmemberof = false;
1111 parser->memberof = 0;
1113 if (parser->tok == TOKEN_IDENT)
1115 ast_expression *var;
1117 parseerror(parser, "expected operator or end of statement");
1122 if (opts_standard == COMPILER_GMQCC)
1124 if (parser->memberof == TYPE_ENTITY) {
1125 /* still get vars first since there could be a fieldpointer */
1126 var = parser_find_var(parser, parser_tokval(parser));
1128 var = parser_find_field(parser, parser_tokval(parser));
1130 else if (parser->memberof == TYPE_VECTOR)
1132 parseerror(parser, "TODO: implement effective vector member access");
1135 else if (parser->memberof) {
1136 parseerror(parser, "namespace for member not found");
1140 var = parser_find_var(parser, parser_tokval(parser));
1142 var = parser_find_var(parser, parser_tokval(parser));
1144 var = parser_find_field(parser, parser_tokval(parser));
1147 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1150 if (ast_istype(var, ast_value))
1151 ((ast_value*)var)->uses++;
1152 vec_push(sy.out, syexp(parser_ctx(parser), var));
1153 DEBUGSHUNTDO(con_out("push %s\n", parser_tokval(parser)));
1155 else if (parser->tok == TOKEN_FLOATCONST) {
1158 parseerror(parser, "expected operator or end of statement, got constant");
1162 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1165 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1166 DEBUGSHUNTDO(con_out("push %g\n", parser_token(parser)->constval.f));
1168 else if (parser->tok == TOKEN_INTCONST) {
1171 parseerror(parser, "expected operator or end of statement, got constant");
1175 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1178 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1179 DEBUGSHUNTDO(con_out("push %i\n", parser_token(parser)->constval.i));
1181 else if (parser->tok == TOKEN_STRINGCONST) {
1184 parseerror(parser, "expected operator or end of statement, got constant");
1188 val = parser_const_string(parser, parser_tokval(parser));
1191 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1192 DEBUGSHUNTDO(con_out("push string\n"));
1194 else if (parser->tok == TOKEN_VECTORCONST) {
1197 parseerror(parser, "expected operator or end of statement, got constant");
1201 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1204 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1205 DEBUGSHUNTDO(con_out("push '%g %g %g'\n",
1206 parser_token(parser)->constval.v.x,
1207 parser_token(parser)->constval.v.y,
1208 parser_token(parser)->constval.v.z));
1210 else if (parser->tok == '(') {
1211 parseerror(parser, "internal error: '(' should be classified as operator");
1214 else if (parser->tok == '[') {
1215 parseerror(parser, "internal error: '[' should be classified as operator");
1218 else if (parser->tok == ')') {
1220 DEBUGSHUNTDO(con_out("do[op] )\n"));
1224 /* we do expect an operator next */
1225 /* closing an opening paren */
1226 if (!parser_close_paren(parser, &sy, false))
1229 DEBUGSHUNTDO(con_out("do[nop] )\n"));
1233 /* allowed for function calls */
1234 if (!parser_close_paren(parser, &sy, true))
1239 else if (parser->tok == ']') {
1241 parseerror(parser, "operand expected");
1245 if (!parser_close_paren(parser, &sy, false))
1249 else if (parser->tok != TOKEN_OPERATOR) {
1251 parseerror(parser, "expected operator or end of statement");
1258 /* classify the operator */
1259 /* TODO: suffix operators */
1260 const oper_info *op;
1261 const oper_info *olast = NULL;
1263 for (o = 0; o < operator_count; ++o) {
1264 if ((!(operators[o].flags & OP_PREFIX) == wantop) &&
1265 !(operators[o].flags & OP_SUFFIX) && /* remove this */
1266 !strcmp(parser_tokval(parser), operators[o].op))
1271 if (o == operator_count) {
1272 /* no operator found... must be the end of the statement */
1275 /* found an operator */
1278 /* when declaring variables, a comma starts a new variable */
1279 if (op->id == opid1(',') && !parens && stopatcomma) {
1280 /* fixup the token */
1285 /* a colon without a pervious question mark cannot be a ternary */
1286 if (!ternaries && op->id == opid2(':','?')) {
1291 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1292 olast = &operators[vec_last(sy.ops).etype-1];
1295 (op->prec < olast->prec) ||
1296 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1298 if (!parser_sy_pop(parser, &sy))
1300 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1301 olast = &operators[vec_last(sy.ops).etype-1];
1306 if (op->id == opid1('.') && opts_standard == COMPILER_GMQCC) {
1307 /* for gmqcc standard: open up the namespace of the previous type */
1308 ast_expression *prevex = vec_last(sy.out).out;
1310 parseerror(parser, "unexpected member operator");
1313 if (prevex->expression.vtype == TYPE_ENTITY)
1314 parser->memberof = TYPE_ENTITY;
1315 else if (prevex->expression.vtype == TYPE_VECTOR)
1316 parser->memberof = TYPE_VECTOR;
1318 parseerror(parser, "type error: type has no members");
1324 if (op->id == opid1('(')) {
1326 size_t sycount = vec_size(sy.out);
1327 DEBUGSHUNTDO(con_out("push [op] (\n"));
1329 /* we expected an operator, this is the function-call operator */
1330 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_FUNC, sycount-1));
1333 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_EXPR, 0));
1334 DEBUGSHUNTDO(con_out("push [nop] (\n"));
1337 } else if (op->id == opid1('[')) {
1339 parseerror(parser, "unexpected array subscript");
1343 /* push both the operator and the paren, this makes life easier */
1344 vec_push(sy.ops, syop(parser_ctx(parser), op));
1345 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_INDEX, 0));
1347 } else if (op->id == opid2('?',':')) {
1349 vec_push(sy.ops, syop(parser_ctx(parser), op));
1352 } else if (op->id == opid2(':','?')) {
1353 /* we don't push this operator */
1357 DEBUGSHUNTDO(con_out("push operator %s\n", op->op));
1358 vec_push(sy.ops, syop(parser_ctx(parser), op));
1362 if (!parser_next(parser)) {
1365 if (parser->tok == ';' ||
1366 (!parens && parser->tok == ']'))
1372 while (vec_size(sy.ops)) {
1373 if (!parser_sy_pop(parser, &sy))
1377 parser->lex->flags.noops = true;
1378 if (!vec_size(sy.out)) {
1379 parseerror(parser, "empty expression");
1382 expr = sy.out[0].out;
1385 DEBUGSHUNTDO(con_out("shunt done\n"));
1389 parser->lex->flags.noops = true;
1395 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma)
1397 ast_expression *e = parse_expression_leave(parser, stopatcomma);
1400 if (!parser_next(parser)) {
1407 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
1410 ast_expression *cond, *ontrue, *onfalse = NULL;
1413 lex_ctx ctx = parser_ctx(parser);
1415 (void)block; /* not touching */
1417 /* skip the 'if', parse an optional 'not' and check for an opening paren */
1418 if (!parser_next(parser)) {
1419 parseerror(parser, "expected condition or 'not'");
1422 if (parser->tok == TOKEN_KEYWORD && !strcmp(parser_tokval(parser), "not")) {
1424 if (!parser_next(parser)) {
1425 parseerror(parser, "expected condition in parenthesis");
1429 if (parser->tok != '(') {
1430 parseerror(parser, "expected 'if' condition in parenthesis");
1433 /* parse into the expression */
1434 if (!parser_next(parser)) {
1435 parseerror(parser, "expected 'if' condition after opening paren");
1438 /* parse the condition */
1439 cond = parse_expression_leave(parser, false);
1443 if (parser->tok != ')') {
1444 parseerror(parser, "expected closing paren after 'if' condition");
1448 /* parse into the 'then' branch */
1449 if (!parser_next(parser)) {
1450 parseerror(parser, "expected statement for on-true branch of 'if'");
1454 ontrue = parse_statement_or_block(parser);
1459 /* check for an else */
1460 if (!strcmp(parser_tokval(parser), "else")) {
1461 /* parse into the 'else' branch */
1462 if (!parser_next(parser)) {
1463 parseerror(parser, "expected on-false branch after 'else'");
1468 onfalse = parse_statement_or_block(parser);
1477 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
1479 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
1480 *out = (ast_expression*)ifthen;
1484 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
1487 ast_expression *cond, *ontrue;
1489 lex_ctx ctx = parser_ctx(parser);
1491 (void)block; /* not touching */
1493 /* skip the 'while' and check for opening paren */
1494 if (!parser_next(parser) || parser->tok != '(') {
1495 parseerror(parser, "expected 'while' condition in parenthesis");
1498 /* parse into the expression */
1499 if (!parser_next(parser)) {
1500 parseerror(parser, "expected 'while' condition after opening paren");
1503 /* parse the condition */
1504 cond = parse_expression_leave(parser, false);
1508 if (parser->tok != ')') {
1509 parseerror(parser, "expected closing paren after 'while' condition");
1513 /* parse into the 'then' branch */
1514 if (!parser_next(parser)) {
1515 parseerror(parser, "expected while-loop body");
1519 ontrue = parse_statement_or_block(parser);
1525 aloop = ast_loop_new(ctx, NULL, cond, NULL, NULL, ontrue);
1526 *out = (ast_expression*)aloop;
1530 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
1533 ast_expression *cond, *ontrue;
1535 lex_ctx ctx = parser_ctx(parser);
1537 (void)block; /* not touching */
1539 /* skip the 'do' and get the body */
1540 if (!parser_next(parser)) {
1541 parseerror(parser, "expected loop body");
1544 ontrue = parse_statement_or_block(parser);
1548 /* expect the "while" */
1549 if (parser->tok != TOKEN_KEYWORD ||
1550 strcmp(parser_tokval(parser), "while"))
1552 parseerror(parser, "expected 'while' and condition");
1557 /* skip the 'while' and check for opening paren */
1558 if (!parser_next(parser) || parser->tok != '(') {
1559 parseerror(parser, "expected 'while' condition in parenthesis");
1563 /* parse into the expression */
1564 if (!parser_next(parser)) {
1565 parseerror(parser, "expected 'while' condition after opening paren");
1569 /* parse the condition */
1570 cond = parse_expression_leave(parser, false);
1574 if (parser->tok != ')') {
1575 parseerror(parser, "expected closing paren after 'while' condition");
1581 if (!parser_next(parser) || parser->tok != ';') {
1582 parseerror(parser, "expected semicolon after condition");
1588 if (!parser_next(parser)) {
1589 parseerror(parser, "parse error");
1595 aloop = ast_loop_new(ctx, NULL, NULL, cond, NULL, ontrue);
1596 *out = (ast_expression*)aloop;
1600 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
1603 ast_expression *initexpr, *cond, *increment, *ontrue;
1604 size_t oldblocklocal;
1607 lex_ctx ctx = parser_ctx(parser);
1609 oldblocklocal = parser->blocklocal;
1610 parser->blocklocal = vec_size(parser->locals);
1617 /* skip the 'while' and check for opening paren */
1618 if (!parser_next(parser) || parser->tok != '(') {
1619 parseerror(parser, "expected 'for' expressions in parenthesis");
1622 /* parse into the expression */
1623 if (!parser_next(parser)) {
1624 parseerror(parser, "expected 'for' initializer after opening paren");
1628 if (parser->tok == TOKEN_TYPENAME) {
1629 if (opts_standard != COMPILER_GMQCC) {
1630 if (parsewarning(parser, WARN_EXTENSIONS,
1631 "current standard does not allow variable declarations in for-loop initializers"))
1635 parseerror(parser, "TODO: assignment of new variables to be non-const");
1637 if (!parse_variable(parser, block, true))
1640 else if (parser->tok != ';')
1642 initexpr = parse_expression_leave(parser, false);
1647 /* move on to condition */
1648 if (parser->tok != ';') {
1649 parseerror(parser, "expected semicolon after for-loop initializer");
1652 if (!parser_next(parser)) {
1653 parseerror(parser, "expected for-loop condition");
1657 /* parse the condition */
1658 if (parser->tok != ';') {
1659 cond = parse_expression_leave(parser, false);
1664 /* move on to incrementor */
1665 if (parser->tok != ';') {
1666 parseerror(parser, "expected semicolon after for-loop initializer");
1669 if (!parser_next(parser)) {
1670 parseerror(parser, "expected for-loop condition");
1674 /* parse the incrementor */
1675 if (parser->tok != ')') {
1676 increment = parse_expression_leave(parser, false);
1679 if (!ast_istype(increment, ast_store) &&
1680 !ast_istype(increment, ast_call) &&
1681 !ast_istype(increment, ast_binstore))
1683 if (genwarning(ast_ctx(increment), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
1689 if (parser->tok != ')') {
1690 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
1693 /* parse into the 'then' branch */
1694 if (!parser_next(parser)) {
1695 parseerror(parser, "expected for-loop body");
1698 ontrue = parse_statement_or_block(parser);
1703 aloop = ast_loop_new(ctx, initexpr, cond, NULL, increment, ontrue);
1704 *out = (ast_expression*)aloop;
1706 while (vec_size(parser->locals) > parser->blocklocal)
1707 retval = retval && parser_pop_local(parser);
1708 parser->blocklocal = oldblocklocal;
1711 if (initexpr) ast_delete(initexpr);
1712 if (cond) ast_delete(cond);
1713 if (increment) ast_delete(increment);
1714 while (vec_size(parser->locals) > parser->blocklocal)
1715 (void)!parser_pop_local(parser);
1716 parser->blocklocal = oldblocklocal;
1720 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
1722 ast_expression *exp = NULL;
1723 ast_return *ret = NULL;
1724 ast_value *expected = parser->function->vtype;
1726 (void)block; /* not touching */
1728 if (!parser_next(parser)) {
1729 parseerror(parser, "expected return expression");
1733 if (parser->tok != ';') {
1734 exp = parse_expression(parser, false);
1738 if (exp->expression.vtype != expected->expression.next->expression.vtype) {
1739 parseerror(parser, "return with invalid expression");
1742 ret = ast_return_new(exp->expression.node.context, exp);
1748 if (!parser_next(parser))
1749 parseerror(parser, "parse error");
1750 if (expected->expression.next->expression.vtype != TYPE_VOID) {
1751 if (opts_standard != COMPILER_GMQCC)
1752 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
1754 parseerror(parser, "return without value");
1756 ret = ast_return_new(parser_ctx(parser), NULL);
1758 *out = (ast_expression*)ret;
1762 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
1764 lex_ctx ctx = parser_ctx(parser);
1766 (void)block; /* not touching */
1768 if (!parser_next(parser) || parser->tok != ';') {
1769 parseerror(parser, "expected semicolon");
1773 if (!parser_next(parser))
1774 parseerror(parser, "parse error");
1776 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue);
1780 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
1782 ast_expression *operand;
1784 ast_switch *switchnode;
1785 ast_switch_case swcase;
1787 lex_ctx ctx = parser_ctx(parser);
1789 (void)block; /* not touching */
1791 /* parse over the opening paren */
1792 if (!parser_next(parser) || parser->tok != '(') {
1793 parseerror(parser, "expected switch operand in parenthesis");
1797 /* parse into the expression */
1798 if (!parser_next(parser)) {
1799 parseerror(parser, "expected switch operand");
1802 /* parse the operand */
1803 operand = parse_expression_leave(parser, false);
1807 if (!OPTS_FLAG(RELAXED_SWITCH)) {
1808 opval = (ast_value*)operand;
1809 if (!ast_istype(operand, ast_value) || !opval->isconst) {
1810 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
1816 switchnode = ast_switch_new(ctx, operand);
1819 if (parser->tok != ')') {
1820 ast_delete(switchnode);
1821 parseerror(parser, "expected closing paren after 'switch' operand");
1825 /* parse over the opening paren */
1826 if (!parser_next(parser) || parser->tok != '{') {
1827 ast_delete(switchnode);
1828 parseerror(parser, "expected list of cases");
1832 if (!parser_next(parser)) {
1833 ast_delete(switchnode);
1834 parseerror(parser, "expected 'case' or 'default'");
1839 while (parser->tok != '}') {
1840 ast_block *caseblock;
1842 if (parser->tok != TOKEN_KEYWORD) {
1843 ast_delete(switchnode);
1844 parseerror(parser, "expected 'case' or 'default'");
1847 if (!strcmp(parser_tokval(parser), "case")) {
1848 if (!parser_next(parser)) {
1849 ast_delete(switchnode);
1850 parseerror(parser, "expected expression for case");
1853 swcase.value = parse_expression_leave(parser, false);
1854 if (!swcase.value) {
1855 ast_delete(switchnode);
1856 parseerror(parser, "expected expression for case");
1860 else if (!strcmp(parser_tokval(parser), "default")) {
1861 swcase.value = NULL;
1862 if (!parser_next(parser)) {
1863 ast_delete(switchnode);
1864 parseerror(parser, "expected colon");
1869 /* Now the colon and body */
1870 if (parser->tok != ':') {
1871 if (swcase.value) ast_unref(swcase.value);
1872 ast_delete(switchnode);
1873 parseerror(parser, "expected colon");
1877 if (!parser_next(parser)) {
1878 if (swcase.value) ast_unref(swcase.value);
1879 ast_delete(switchnode);
1880 parseerror(parser, "expected statements or case");
1883 caseblock = ast_block_new(parser_ctx(parser));
1885 if (swcase.value) ast_unref(swcase.value);
1886 ast_delete(switchnode);
1889 swcase.code = (ast_expression*)caseblock;
1890 vec_push(switchnode->cases, swcase);
1892 ast_expression *expr;
1893 if (parser->tok == '}')
1895 if (parser->tok == TOKEN_KEYWORD) {
1896 if (!strcmp(parser_tokval(parser), "case") ||
1897 !strcmp(parser_tokval(parser), "default"))
1902 if (!parse_statement(parser, caseblock, &expr, true)) {
1903 ast_delete(switchnode);
1908 vec_push(caseblock->exprs, expr);
1913 if (parser->tok != '}') {
1914 ast_delete(switchnode);
1915 parseerror(parser, "expected closing paren of case list");
1918 if (!parser_next(parser)) {
1919 ast_delete(switchnode);
1920 parseerror(parser, "parse error after switch");
1923 *out = (ast_expression*)switchnode;
1927 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
1929 if (parser->tok == TOKEN_TYPENAME || parser->tok == '.')
1931 /* local variable */
1933 parseerror(parser, "cannot declare a variable from here");
1936 if (opts_standard == COMPILER_QCC) {
1937 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
1940 if (!parse_variable(parser, block, false))
1945 else if (parser->tok == TOKEN_KEYWORD)
1947 if (!strcmp(parser_tokval(parser), "local"))
1950 parseerror(parser, "cannot declare a local variable here");
1953 if (!parser_next(parser)) {
1954 parseerror(parser, "expected variable declaration");
1957 if (!parse_variable(parser, block, true))
1962 else if (!strcmp(parser_tokval(parser), "return"))
1964 return parse_return(parser, block, out);
1966 else if (!strcmp(parser_tokval(parser), "if"))
1968 return parse_if(parser, block, out);
1970 else if (!strcmp(parser_tokval(parser), "while"))
1972 return parse_while(parser, block, out);
1974 else if (!strcmp(parser_tokval(parser), "do"))
1976 return parse_dowhile(parser, block, out);
1978 else if (!strcmp(parser_tokval(parser), "for"))
1980 if (opts_standard == COMPILER_QCC) {
1981 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
1984 return parse_for(parser, block, out);
1986 else if (!strcmp(parser_tokval(parser), "break"))
1988 return parse_break_continue(parser, block, out, false);
1990 else if (!strcmp(parser_tokval(parser), "continue"))
1992 return parse_break_continue(parser, block, out, true);
1994 else if (!strcmp(parser_tokval(parser), "switch"))
1996 return parse_switch(parser, block, out);
1998 else if (!strcmp(parser_tokval(parser), "case") ||
1999 !strcmp(parser_tokval(parser), "default"))
2002 parseerror(parser, "unexpected 'case' label");
2007 parseerror(parser, "Unexpected keyword");
2010 else if (parser->tok == '{')
2013 inner = parse_block(parser, false);
2016 *out = (ast_expression*)inner;
2021 ast_expression *exp = parse_expression(parser, false);
2025 if (!ast_istype(exp, ast_store) &&
2026 !ast_istype(exp, ast_call) &&
2027 !ast_istype(exp, ast_binstore))
2029 if (genwarning(ast_ctx(exp), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2036 static bool GMQCC_WARN parser_pop_local(parser_t *parser)
2041 ve = &vec_last(parser->locals);
2042 if (!parser->errors) {
2043 if (ast_istype(ve->var, ast_value) && !(((ast_value*)(ve->var))->uses)) {
2044 if (parsewarning(parser, WARN_UNUSED_VARIABLE, "unused variable: `%s`", ve->name))
2049 vec_pop(parser->locals);
2053 static bool parse_block_into(parser_t *parser, ast_block *block, bool warnreturn)
2055 size_t oldblocklocal;
2058 oldblocklocal = parser->blocklocal;
2059 parser->blocklocal = vec_size(parser->locals);
2061 if (!parser_next(parser)) { /* skip the '{' */
2062 parseerror(parser, "expected function body");
2066 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
2068 ast_expression *expr;
2069 if (parser->tok == '}')
2072 if (!parse_statement(parser, block, &expr, false)) {
2073 /* parseerror(parser, "parse error"); */
2079 vec_push(block->exprs, expr);
2082 if (parser->tok != '}') {
2085 if (warnreturn && parser->function->vtype->expression.next->expression.vtype != TYPE_VOID)
2087 if (!vec_size(block->exprs) ||
2088 !ast_istype(vec_last(block->exprs), ast_return))
2090 if (parsewarning(parser, WARN_MISSING_RETURN_VALUES, "control reaches end of non-void function")) {
2096 (void)parser_next(parser);
2100 while (vec_size(parser->locals) > parser->blocklocal)
2101 retval = retval && parser_pop_local(parser);
2102 parser->blocklocal = oldblocklocal;
2106 static ast_block* parse_block(parser_t *parser, bool warnreturn)
2109 block = ast_block_new(parser_ctx(parser));
2112 if (!parse_block_into(parser, block, warnreturn)) {
2113 ast_block_delete(block);
2119 static ast_expression* parse_statement_or_block(parser_t *parser)
2121 ast_expression *expr = NULL;
2122 if (parser->tok == '{')
2123 return (ast_expression*)parse_block(parser, false);
2124 if (!parse_statement(parser, NULL, &expr, false))
2130 static bool create_vector_members(ast_value *var, varentry_t *ve)
2133 size_t len = strlen(var->name);
2135 for (i = 0; i < 3; ++i) {
2136 ve[i].var = (ast_expression*)ast_member_new(ast_ctx(var), (ast_expression*)var, i);
2140 ve[i].name = (char*)mem_a(len+3);
2142 ast_delete(ve[i].var);
2146 memcpy(ve[i].name, var->name, len);
2147 ve[i].name[len] = '_';
2148 ve[i].name[len+1] = 'x'+i;
2149 ve[i].name[len+2] = 0;
2158 ast_delete(ve[i].var);
2165 static bool parse_function_body(parser_t *parser, ast_value *var)
2167 ast_block *block = NULL;
2172 ast_expression *framenum = NULL;
2173 ast_expression *nextthink = NULL;
2174 /* None of the following have to be deleted */
2175 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
2176 ast_expression *gbl_time = NULL, *gbl_self = NULL;
2177 bool has_frame_think;
2181 has_frame_think = false;
2182 old = parser->function;
2184 if (var->expression.variadic) {
2185 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
2186 "variadic function with implementation will not be able to access additional parameters"))
2192 if (parser->tok == '[') {
2193 /* got a frame definition: [ framenum, nextthink ]
2194 * this translates to:
2195 * self.frame = framenum;
2196 * self.nextthink = time + 0.1;
2197 * self.think = nextthink;
2201 fld_think = parser_find_field(parser, "think");
2202 fld_nextthink = parser_find_field(parser, "nextthink");
2203 fld_frame = parser_find_field(parser, "frame");
2204 if (!fld_think || !fld_nextthink || !fld_frame) {
2205 parseerror(parser, "cannot use [frame,think] notation without the required fields");
2206 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
2209 gbl_time = parser_find_global(parser, "time");
2210 gbl_self = parser_find_global(parser, "self");
2211 if (!gbl_time || !gbl_self) {
2212 parseerror(parser, "cannot use [frame,think] notation without the required globals");
2213 parseerror(parser, "please declare the following globals: `time`, `self`");
2217 if (!parser_next(parser))
2220 framenum = parse_expression_leave(parser, true);
2222 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
2225 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->isconst) {
2226 ast_unref(framenum);
2227 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
2231 if (parser->tok != ',') {
2232 ast_unref(framenum);
2233 parseerror(parser, "expected comma after frame number in [frame,think] notation");
2234 parseerror(parser, "Got a %i\n", parser->tok);
2238 if (!parser_next(parser)) {
2239 ast_unref(framenum);
2243 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
2245 /* qc allows the use of not-yet-declared functions here
2246 * - this automatically creates a prototype */
2248 ast_value *thinkfunc;
2249 ast_expression *functype = fld_think->expression.next;
2251 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
2252 if (!thinkfunc || !ast_type_adopt(thinkfunc, functype)) {
2253 ast_unref(framenum);
2254 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
2258 if (!parser_next(parser)) {
2259 ast_unref(framenum);
2260 ast_delete(thinkfunc);
2264 varent.var = (ast_expression*)thinkfunc;
2265 varent.name = util_strdup(thinkfunc->name);
2266 vec_push(parser->globals, varent);
2267 nextthink = (ast_expression*)thinkfunc;
2270 nextthink = parse_expression_leave(parser, true);
2272 ast_unref(framenum);
2273 parseerror(parser, "expected a think-function in [frame,think] notation");
2278 if (!ast_istype(nextthink, ast_value)) {
2279 parseerror(parser, "think-function in [frame,think] notation must be a constant");
2283 if (retval && parser->tok != ']') {
2284 parseerror(parser, "expected closing `]` for [frame,think] notation");
2288 if (retval && !parser_next(parser)) {
2292 if (retval && parser->tok != '{') {
2293 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
2298 ast_unref(nextthink);
2299 ast_unref(framenum);
2303 has_frame_think = true;
2306 block = ast_block_new(parser_ctx(parser));
2308 parseerror(parser, "failed to allocate block");
2309 if (has_frame_think) {
2310 ast_unref(nextthink);
2311 ast_unref(framenum);
2316 if (has_frame_think) {
2318 ast_expression *self_frame;
2319 ast_expression *self_nextthink;
2320 ast_expression *self_think;
2321 ast_expression *time_plus_1;
2322 ast_store *store_frame;
2323 ast_store *store_nextthink;
2324 ast_store *store_think;
2326 ctx = parser_ctx(parser);
2327 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
2328 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
2329 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
2331 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
2332 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
2334 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
2335 if (self_frame) ast_delete(self_frame);
2336 if (self_nextthink) ast_delete(self_nextthink);
2337 if (self_think) ast_delete(self_think);
2338 if (time_plus_1) ast_delete(time_plus_1);
2344 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
2345 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
2346 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
2349 ast_delete(self_frame);
2352 if (!store_nextthink) {
2353 ast_delete(self_nextthink);
2357 ast_delete(self_think);
2361 if (store_frame) ast_delete(store_frame);
2362 if (store_nextthink) ast_delete(store_nextthink);
2363 if (store_think) ast_delete(store_think);
2366 vec_push(block->exprs, (ast_expression*)store_frame);
2367 vec_push(block->exprs, (ast_expression*)store_nextthink);
2368 vec_push(block->exprs, (ast_expression*)store_think);
2372 parseerror(parser, "failed to generate code for [frame,think]");
2373 ast_unref(nextthink);
2374 ast_unref(framenum);
2380 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
2383 ast_value *param = var->expression.params[parami];
2385 if (param->expression.vtype != TYPE_VECTOR &&
2386 (param->expression.vtype != TYPE_FIELD ||
2387 param->expression.next->expression.vtype != TYPE_VECTOR))
2392 if (!create_vector_members(param, ve)) {
2393 ast_block_delete(block);
2397 for (e = 0; e < 3; ++e) {
2398 vec_push(parser->locals, ve[e]);
2399 ast_block_collect(block, ve[e].var);
2400 ve[e].var = NULL; /* collected */
2404 func = ast_function_new(ast_ctx(var), var->name, var);
2406 parseerror(parser, "failed to allocate function for `%s`", var->name);
2407 ast_block_delete(block);
2410 vec_push(parser->functions, func);
2412 parser->function = func;
2413 if (!parse_block_into(parser, block, true)) {
2414 ast_block_delete(block);
2418 vec_push(func->blocks, block);
2420 parser->function = old;
2421 while (vec_size(parser->locals))
2422 retval = retval && parser_pop_local(parser);
2424 if (parser->tok == ';')
2425 return parser_next(parser);
2426 else if (opts_standard == COMPILER_QCC)
2427 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
2431 vec_pop(parser->functions);
2432 ast_function_delete(func);
2433 var->constval.vfunc = NULL;
2436 while (vec_size(parser->locals)) {
2437 mem_d(vec_last(parser->locals).name);
2438 vec_pop(parser->locals);
2440 parser->function = old;
2444 static ast_expression *array_accessor_split(
2449 ast_expression *left,
2450 ast_expression *right
2456 lex_ctx ctx = ast_ctx(array);
2458 if (!left || !right) {
2459 if (left) ast_delete(left);
2460 if (right) ast_delete(right);
2464 cmp = ast_binary_new(ctx, INSTR_LT,
2465 (ast_expression*)index,
2466 (ast_expression*)parser_const_float(parser, middle));
2470 parseerror(parser, "internal error: failed to create comparison for array setter");
2474 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
2476 ast_delete(cmp); /* will delete left and right */
2477 parseerror(parser, "internal error: failed to create conditional jump for array setter");
2481 return (ast_expression*)ifthen;
2484 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
2486 lex_ctx ctx = ast_ctx(array);
2488 if (from+1 == afterend) {
2489 /* set this value */
2492 ast_array_index *subscript;
2494 int assignop = type_store_instr[value->expression.vtype];
2496 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
2497 assignop = INSTR_STORE_V;
2499 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
2503 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
2505 ast_delete(subscript);
2509 block = ast_block_new(ctx);
2515 vec_push(block->exprs, (ast_expression*)st);
2517 ret = ast_return_new(ctx, NULL);
2523 vec_push(block->exprs, (ast_expression*)ret);
2525 return (ast_expression*)block;
2527 ast_expression *left, *right;
2528 size_t diff = afterend - from;
2529 size_t middle = from + diff/2;
2530 left = array_setter_node(parser, array, index, value, from, middle);
2531 right = array_setter_node(parser, array, index, value, middle, afterend);
2532 return array_accessor_split(parser, array, index, middle, left, right);
2536 static ast_expression *array_field_setter_node(
2545 lex_ctx ctx = ast_ctx(array);
2547 if (from+1 == afterend) {
2548 /* set this value */
2551 ast_entfield *entfield;
2552 ast_array_index *subscript;
2554 int assignop = type_storep_instr[value->expression.vtype];
2556 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
2557 assignop = INSTR_STOREP_V;
2559 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
2563 entfield = ast_entfield_new_force(ctx,
2564 (ast_expression*)entity,
2565 (ast_expression*)subscript,
2566 (ast_expression*)subscript);
2568 ast_delete(subscript);
2572 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
2574 ast_delete(entfield);
2578 block = ast_block_new(ctx);
2584 vec_push(block->exprs, (ast_expression*)st);
2586 ret = ast_return_new(ctx, NULL);
2592 vec_push(block->exprs, (ast_expression*)ret);
2594 return (ast_expression*)block;
2596 ast_expression *left, *right;
2597 size_t diff = afterend - from;
2598 size_t middle = from + diff/2;
2599 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
2600 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
2601 return array_accessor_split(parser, array, index, middle, left, right);
2605 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
2607 lex_ctx ctx = ast_ctx(array);
2609 if (from+1 == afterend) {
2611 ast_array_index *subscript;
2613 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
2617 ret = ast_return_new(ctx, (ast_expression*)subscript);
2619 ast_delete(subscript);
2623 return (ast_expression*)ret;
2625 ast_expression *left, *right;
2626 size_t diff = afterend - from;
2627 size_t middle = from + diff/2;
2628 left = array_getter_node(parser, array, index, from, middle);
2629 right = array_getter_node(parser, array, index, middle, afterend);
2630 return array_accessor_split(parser, array, index, middle, left, right);
2634 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
2636 ast_function *func = NULL;
2637 ast_value *fval = NULL;
2638 ast_block *body = NULL;
2640 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
2642 parseerror(parser, "failed to create accessor function value");
2646 func = ast_function_new(ast_ctx(array), funcname, fval);
2649 parseerror(parser, "failed to create accessor function node");
2653 body = ast_block_new(ast_ctx(array));
2655 parseerror(parser, "failed to create block for array accessor");
2661 vec_push(func->blocks, body);
2664 vec_push(parser->accessors, fval);
2669 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
2671 ast_expression *root = NULL;
2672 ast_value *index = NULL;
2673 ast_value *value = NULL;
2677 if (!ast_istype(array->expression.next, ast_value)) {
2678 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
2682 if (!parser_create_array_accessor(parser, array, funcname, &fval))
2684 func = fval->constval.vfunc;
2685 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
2687 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
2688 value = ast_value_copy((ast_value*)array->expression.next);
2690 if (!index || !value) {
2691 parseerror(parser, "failed to create locals for array accessor");
2694 (void)!ast_value_set_name(value, "value"); /* not important */
2695 vec_push(fval->expression.params, index);
2696 vec_push(fval->expression.params, value);
2698 root = array_setter_node(parser, array, index, value, 0, array->expression.count);
2700 parseerror(parser, "failed to build accessor search tree");
2704 vec_push(func->blocks[0]->exprs, root);
2705 array->setter = fval;
2708 if (index) ast_delete(index);
2709 if (value) ast_delete(value);
2710 if (root) ast_delete(root);
2716 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
2718 ast_expression *root = NULL;
2719 ast_value *entity = NULL;
2720 ast_value *index = NULL;
2721 ast_value *value = NULL;
2725 if (!ast_istype(array->expression.next, ast_value)) {
2726 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
2730 if (!parser_create_array_accessor(parser, array, funcname, &fval))
2732 func = fval->constval.vfunc;
2733 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
2735 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
2736 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
2737 value = ast_value_copy((ast_value*)array->expression.next);
2738 if (!entity || !index || !value) {
2739 parseerror(parser, "failed to create locals for array accessor");
2742 (void)!ast_value_set_name(value, "value"); /* not important */
2743 vec_push(fval->expression.params, entity);
2744 vec_push(fval->expression.params, index);
2745 vec_push(fval->expression.params, value);
2747 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
2749 parseerror(parser, "failed to build accessor search tree");
2753 vec_push(func->blocks[0]->exprs, root);
2754 array->setter = fval;
2757 if (entity) ast_delete(entity);
2758 if (index) ast_delete(index);
2759 if (value) ast_delete(value);
2760 if (root) ast_delete(root);
2766 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
2768 ast_expression *root = NULL;
2769 ast_value *index = NULL;
2773 /* NOTE: checking array->expression.next rather than elemtype since
2774 * for fields elemtype is a temporary fieldtype.
2776 if (!ast_istype(array->expression.next, ast_value)) {
2777 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
2781 if (!parser_create_array_accessor(parser, array, funcname, &fval))
2783 func = fval->constval.vfunc;
2784 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
2786 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
2789 parseerror(parser, "failed to create locals for array accessor");
2792 vec_push(fval->expression.params, index);
2794 root = array_getter_node(parser, array, index, 0, array->expression.count);
2796 parseerror(parser, "failed to build accessor search tree");
2800 vec_push(func->blocks[0]->exprs, root);
2801 array->getter = fval;
2804 if (index) ast_delete(index);
2805 if (root) ast_delete(root);
2811 static ast_value *parse_typename(parser_t *parser, ast_value **storebase);
2812 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
2820 bool variadic = false;
2822 ctx = parser_ctx(parser);
2824 /* for the sake of less code we parse-in in this function */
2825 if (!parser_next(parser)) {
2826 parseerror(parser, "expected parameter list");
2832 /* parse variables until we hit a closing paren */
2833 while (parser->tok != ')') {
2835 /* there must be commas between them */
2836 if (parser->tok != ',') {
2837 parseerror(parser, "expected comma or end of parameter list");
2840 if (!parser_next(parser)) {
2841 parseerror(parser, "expected parameter");
2847 if (parser->tok == TOKEN_DOTS) {
2848 /* '...' indicates a varargs function */
2850 if (!parser_next(parser)) {
2851 parseerror(parser, "expected parameter");
2854 if (parser->tok != ')') {
2855 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
2861 /* for anything else just parse a typename */
2862 param = parse_typename(parser, NULL);
2865 vec_push(params, param);
2866 if (param->expression.vtype >= TYPE_VARIANT) {
2867 char typename[1024];
2868 ast_type_to_string((ast_expression*)param, typename, sizeof(typename));
2869 parseerror(parser, "type not supported as part of a parameter list: %s", typename);
2876 if (vec_size(params) > 8 && opts_standard == COMPILER_QCC)
2877 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
2880 if (!parser_next(parser)) {
2881 parseerror(parser, "parse error after typename");
2885 /* now turn 'var' into a function type */
2886 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
2887 fval->expression.next = (ast_expression*)var;
2888 fval->expression.variadic = variadic;
2891 var->expression.params = params;
2898 for (i = 0; i < vec_size(params); ++i)
2899 ast_delete(params[i]);
2904 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
2906 ast_expression *cexp;
2907 ast_value *cval, *tmp;
2910 ctx = parser_ctx(parser);
2912 if (!parser_next(parser)) {
2914 parseerror(parser, "expected array-size");
2918 cexp = parse_expression_leave(parser, true);
2920 if (!cexp || !ast_istype(cexp, ast_value)) {
2924 parseerror(parser, "expected array-size as constant positive integer");
2927 cval = (ast_value*)cexp;
2929 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
2930 tmp->expression.next = (ast_expression*)var;
2933 if (cval->expression.vtype == TYPE_INTEGER)
2934 tmp->expression.count = cval->constval.vint;
2935 else if (cval->expression.vtype == TYPE_FLOAT)
2936 tmp->expression.count = cval->constval.vfloat;
2940 parseerror(parser, "array-size must be a positive integer constant");
2945 if (parser->tok != ']') {
2947 parseerror(parser, "expected ']' after array-size");
2950 if (!parser_next(parser)) {
2952 parseerror(parser, "error after parsing array size");
2958 /* Parse a complete typename.
2959 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
2960 * but when parsing variables separated by comma
2961 * 'storebase' should point to where the base-type should be kept.
2962 * The base type makes up every bit of type information which comes *before* the
2965 * The following will be parsed in its entirety:
2967 * The 'basetype' in this case is 'void()'
2968 * and if there's a comma after it, say:
2970 * then the type-information 'void()' can be stored in 'storebase'
2972 static ast_value *parse_typename(parser_t *parser, ast_value **storebase)
2974 ast_value *var, *tmp;
2977 const char *name = NULL;
2978 bool isfield = false;
2979 bool wasarray = false;
2981 ctx = parser_ctx(parser);
2983 /* types may start with a dot */
2984 if (parser->tok == '.') {
2986 /* if we parsed a dot we need a typename now */
2987 if (!parser_next(parser)) {
2988 parseerror(parser, "expected typename for field definition");
2991 if (parser->tok != TOKEN_TYPENAME) {
2992 parseerror(parser, "expected typename");
2997 /* generate the basic type value */
2998 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
2999 /* do not yet turn into a field - remember:
3000 * .void() foo; is a field too
3001 * .void()() foo; is a function
3005 if (!parser_next(parser)) {
3007 parseerror(parser, "parse error after typename");
3011 /* an opening paren now starts the parameter-list of a function
3012 * this is where original-QC has parameter lists.
3013 * We allow a single parameter list here.
3014 * Much like fteqcc we don't allow `float()() x`
3016 if (parser->tok == '(') {
3017 var = parse_parameter_list(parser, var);
3022 /* store the base if requested */
3024 *storebase = ast_value_copy(var);
3026 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3027 tmp->expression.next = (ast_expression*)*storebase;
3032 /* there may be a name now */
3033 if (parser->tok == TOKEN_IDENT) {
3034 name = util_strdup(parser_tokval(parser));
3036 if (!parser_next(parser)) {
3038 parseerror(parser, "error after variable or field declaration");
3043 /* now this may be an array */
3044 if (parser->tok == '[') {
3046 var = parse_arraysize(parser, var);
3051 /* This is the point where we can turn it into a field */
3053 /* turn it into a field if desired */
3054 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3055 tmp->expression.next = (ast_expression*)var;
3059 /* now there may be function parens again */
3060 if (parser->tok == '(' && opts_standard == COMPILER_QCC)
3061 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3062 if (parser->tok == '(' && wasarray)
3063 parseerror(parser, "arrays as part of a return type is not supported");
3064 while (parser->tok == '(') {
3065 var = parse_parameter_list(parser, var);
3074 /* finally name it */
3076 if (!ast_value_set_name(var, name)) {
3078 parseerror(parser, "internal error: failed to set name");
3081 /* free the name, ast_value_set_name duplicates */
3088 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields)
3092 ast_expression *old;
3096 ast_value *basetype = NULL;
3098 bool isparam = false;
3099 bool isvector = false;
3100 bool cleanvar = true;
3101 bool wasarray = false;
3103 varentry_t varent, ve[3];
3105 /* get the first complete variable */
3106 var = parse_typename(parser, &basetype);
3109 ast_delete(basetype);
3113 memset(&varent, 0, sizeof(varent));
3114 memset(&ve, 0, sizeof(ve));
3120 /* Part 0: finish the type */
3121 if (parser->tok == '(') {
3122 if (opts_standard == COMPILER_QCC)
3123 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3124 var = parse_parameter_list(parser, var);
3130 /* we only allow 1-dimensional arrays */
3131 if (parser->tok == '[') {
3133 var = parse_arraysize(parser, var);
3139 if (parser->tok == '(' && wasarray) {
3140 parseerror(parser, "arrays as part of a return type is not supported");
3141 /* we'll still parse the type completely for now */
3143 /* for functions returning functions */
3144 while (parser->tok == '(') {
3145 if (opts_standard == COMPILER_QCC)
3146 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3147 var = parse_parameter_list(parser, var);
3155 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
3156 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
3157 * is then filled with the previous definition and the parameter-names replaced.
3160 /* Deal with end_sys_ vars */
3162 if (!strcmp(var->name, "end_sys_globals")) {
3163 parser->crc_globals = vec_size(parser->globals);
3166 else if (!strcmp(var->name, "end_sys_fields")) {
3167 parser->crc_fields = vec_size(parser->fields);
3170 if (was_end && var->expression.vtype == TYPE_FIELD) {
3171 if (parsewarning(parser, WARN_END_SYS_FIELDS,
3172 "global '%s' hint should not be a field",
3173 parser_tokval(parser)))
3180 if (!nofields && var->expression.vtype == TYPE_FIELD)
3182 /* deal with field declarations */
3183 old = parser_find_field(parser, var->name);
3185 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
3186 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
3195 parseerror(parser, "field `%s` already declared here: %s:%i",
3196 var->name, ast_ctx(old).file, ast_ctx(old).line);
3201 if (opts_standard == COMPILER_QCC &&
3202 (old = parser_find_global(parser, var->name)))
3204 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
3205 parseerror(parser, "field `%s` already declared here: %s:%i",
3206 var->name, ast_ctx(old).file, ast_ctx(old).line);
3213 /* deal with other globals */
3214 old = parser_find_global(parser, var->name);
3215 if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
3217 /* This is a function which had a prototype */
3218 if (!ast_istype(old, ast_value)) {
3219 parseerror(parser, "internal error: prototype is not an ast_value");
3223 proto = (ast_value*)old;
3224 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
3225 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
3227 ast_ctx(proto).file, ast_ctx(proto).line);
3231 /* we need the new parameter-names */
3232 for (i = 0; i < vec_size(proto->expression.params); ++i)
3233 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
3241 parseerror(parser, "global `%s` already declared here: %s:%i",
3242 var->name, ast_ctx(old).file, ast_ctx(old).line);
3246 if (opts_standard == COMPILER_QCC &&
3247 (old = parser_find_field(parser, var->name)))
3249 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
3250 parseerror(parser, "global `%s` already declared here: %s:%i",
3251 var->name, ast_ctx(old).file, ast_ctx(old).line);
3258 else /* it's not a global */
3260 old = parser_find_local(parser, var->name, parser->blocklocal, &isparam);
3261 if (old && !isparam) {
3262 parseerror(parser, "local `%s` already declared here: %s:%i",
3263 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
3267 old = parser_find_local(parser, var->name, 0, &isparam);
3268 if (old && isparam) {
3269 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
3270 "local `%s` is shadowing a parameter", var->name))
3272 parseerror(parser, "local `%s` already declared here: %s:%i",
3273 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
3277 if (opts_standard != COMPILER_GMQCC) {
3286 * Create the global/local, and deal with vector types.
3289 if (var->expression.vtype == TYPE_VECTOR)
3291 else if (var->expression.vtype == TYPE_FIELD &&
3292 var->expression.next->expression.vtype == TYPE_VECTOR)
3296 if (!create_vector_members(var, ve)) {
3302 varent.name = util_strdup(var->name);
3303 varent.var = (ast_expression*)var;
3306 /* deal with global variables, fields, functions */
3307 if (!nofields && var->expression.vtype == TYPE_FIELD) {
3308 vec_push(parser->fields, varent);
3310 for (i = 0; i < 3; ++i)
3311 vec_push(parser->fields, ve[i]);
3315 vec_push(parser->globals, varent);
3317 for (i = 0; i < 3; ++i)
3318 vec_push(parser->globals, ve[i]);
3322 vec_push(parser->locals, varent);
3323 vec_push(localblock->locals, var);
3325 for (i = 0; i < 3; ++i) {
3326 vec_push(parser->locals, ve[i]);
3327 ast_block_collect(localblock, ve[i].var);
3328 ve[i].var = NULL; /* from here it's being collected in the block */
3334 ve[0].name = ve[1].name = ve[2].name = NULL;
3335 ve[0].var = ve[1].var = ve[2].var = NULL;
3341 if (var->expression.vtype == TYPE_ARRAY) {
3343 snprintf(name, sizeof(name), "%s##SET", var->name);
3344 if (!parser_create_array_setter(parser, var, name))
3346 snprintf(name, sizeof(name), "%s##GET", var->name);
3347 if (!parser_create_array_getter(parser, var, var->expression.next, name))
3350 else if (!localblock && !nofields &&
3351 var->expression.vtype == TYPE_FIELD &&
3352 var->expression.next->expression.vtype == TYPE_ARRAY)
3355 ast_expression *telem;
3357 ast_value *array = (ast_value*)var->expression.next;
3359 if (!ast_istype(var->expression.next, ast_value)) {
3360 parseerror(parser, "internal error: field element type must be an ast_value");
3364 snprintf(name, sizeof(name), "%s##SETF", var->name);
3365 if (!parser_create_array_field_setter(parser, array, name))
3368 telem = ast_type_copy(ast_ctx(var), array->expression.next);
3369 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
3370 tfield->expression.next = telem;
3371 snprintf(name, sizeof(name), "%s##GETFP", var->name);
3372 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
3380 if (parser->tok == ';') {
3381 ast_delete(basetype);
3382 if (!parser_next(parser)) {
3383 parseerror(parser, "error after variable declaration");
3389 if (parser->tok == ',')
3392 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
3393 parseerror(parser, "missing comma or semicolon while parsing variables");
3397 if (localblock && opts_standard == COMPILER_QCC) {
3398 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
3399 "initializing expression turns variable `%s` into a constant in this standard",
3406 if (parser->tok != '{') {
3407 if (parser->tok != '=') {
3408 parseerror(parser, "missing semicolon or initializer");
3412 if (!parser_next(parser)) {
3413 parseerror(parser, "error parsing initializer");
3417 else if (opts_standard == COMPILER_QCC) {
3418 parseerror(parser, "expected '=' before function body in this standard");
3421 if (parser->tok == '#') {
3425 parseerror(parser, "cannot declare builtins within functions");
3428 if (var->expression.vtype != TYPE_FUNCTION) {
3429 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
3432 if (!parser_next(parser)) {
3433 parseerror(parser, "expected builtin number");
3436 if (parser->tok != TOKEN_INTCONST) {
3437 parseerror(parser, "builtin number must be an integer constant");
3440 if (parser_token(parser)->constval.i <= 0) {
3441 parseerror(parser, "builtin number must be an integer greater than zero");
3445 func = ast_function_new(ast_ctx(var), var->name, var);
3447 parseerror(parser, "failed to allocate function for `%s`", var->name);
3450 vec_push(parser->functions, func);
3452 func->builtin = -parser_token(parser)->constval.i;
3454 if (!parser_next(parser)) {
3455 parseerror(parser, "expected comma or semicolon");
3456 ast_function_delete(func);
3457 var->constval.vfunc = NULL;
3461 else if (parser->tok == '{' || parser->tok == '[')
3464 parseerror(parser, "cannot declare functions within functions");
3468 if (!parse_function_body(parser, var))
3470 ast_delete(basetype);
3473 ast_expression *cexp;
3476 cexp = parse_expression_leave(parser, true);
3481 cval = (ast_value*)cexp;
3482 if (!ast_istype(cval, ast_value) || !cval->isconst)
3483 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
3486 var->isconst = true;
3487 if (cval->expression.vtype == TYPE_STRING)
3488 var->constval.vstring = parser_strdup(cval->constval.vstring);
3490 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
3494 shunt sy = { NULL, NULL };
3495 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
3496 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
3497 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
3498 if (!parser_sy_pop(parser, &sy))
3501 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
3502 parseerror(parser, "internal error: leaked operands");
3503 vec_push(localblock->exprs, (ast_expression*)sy.out[0].out);
3511 if (parser->tok == ',') {
3512 if (!parser_next(parser)) {
3513 parseerror(parser, "expected another variable");
3517 if (parser->tok != TOKEN_IDENT) {
3518 parseerror(parser, "expected another variable");
3521 var = ast_value_copy(basetype);
3523 ast_value_set_name(var, parser_tokval(parser));
3524 if (!parser_next(parser)) {
3525 parseerror(parser, "error parsing variable declaration");
3531 if (parser->tok != ';') {
3532 parseerror(parser, "missing semicolon after variables");
3536 if (!parser_next(parser)) {
3537 parseerror(parser, "parse error after variable declaration");
3541 ast_delete(basetype);
3545 if (cleanvar && var)
3547 ast_delete(basetype);
3551 ast_delete(basetype);
3552 if (cleanvar && var)
3554 if (varent.name) mem_d(varent.name);
3555 if (ve[0].name) mem_d(ve[0].name);
3556 if (ve[1].name) mem_d(ve[1].name);
3557 if (ve[2].name) mem_d(ve[2].name);
3558 if (ve[0].var) mem_d(ve[0].var);
3559 if (ve[1].var) mem_d(ve[1].var);
3560 if (ve[2].var) mem_d(ve[2].var);
3564 static bool parser_global_statement(parser_t *parser)
3566 if (parser->tok == TOKEN_TYPENAME || parser->tok == '.')
3568 return parse_variable(parser, NULL, false);
3570 else if (parser->tok == TOKEN_KEYWORD)
3572 /* handle 'var' and 'const' */
3573 if (!strcmp(parser_tokval(parser), "var")) {
3574 if (!parser_next(parser)) {
3575 parseerror(parser, "expected variable declaration after 'var'");
3578 return parse_variable(parser, NULL, true);
3582 else if (parser->tok == '$')
3584 if (!parser_next(parser)) {
3585 parseerror(parser, "parse error");
3591 parseerror(parser, "unexpected token: %s", parser->lex->tok.value);
3597 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
3599 return util_crc16(old, str, strlen(str));
3602 static void progdefs_crc_file(const char *str)
3604 /* write to progdefs.h here */
3608 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
3610 old = progdefs_crc_sum(old, str);
3611 progdefs_crc_file(str);
3615 static void generate_checksum(parser_t *parser)
3617 uint16_t crc = 0xFFFF;
3620 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
3621 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
3623 progdefs_crc_file("\tint\tpad;\n");
3624 progdefs_crc_file("\tint\tofs_return[3];\n");
3625 progdefs_crc_file("\tint\tofs_parm0[3];\n");
3626 progdefs_crc_file("\tint\tofs_parm1[3];\n");
3627 progdefs_crc_file("\tint\tofs_parm2[3];\n");
3628 progdefs_crc_file("\tint\tofs_parm3[3];\n");
3629 progdefs_crc_file("\tint\tofs_parm4[3];\n");
3630 progdefs_crc_file("\tint\tofs_parm5[3];\n");
3631 progdefs_crc_file("\tint\tofs_parm6[3];\n");
3632 progdefs_crc_file("\tint\tofs_parm7[3];\n");
3634 for (i = 0; i < parser->crc_globals; ++i) {
3635 if (!ast_istype(parser->globals[i].var, ast_value))
3637 switch (parser->globals[i].var->expression.vtype) {
3638 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
3639 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
3640 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
3641 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
3643 crc = progdefs_crc_both(crc, "\tint\t");
3646 crc = progdefs_crc_both(crc, parser->globals[i].name);
3647 crc = progdefs_crc_both(crc, ";\n");
3649 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
3650 for (i = 0; i < parser->crc_fields; ++i) {
3651 if (!ast_istype(parser->fields[i].var, ast_value))
3653 switch (parser->fields[i].var->expression.next->expression.vtype) {
3654 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
3655 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
3656 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
3657 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
3659 crc = progdefs_crc_both(crc, "\tint\t");
3662 crc = progdefs_crc_both(crc, parser->fields[i].name);
3663 crc = progdefs_crc_both(crc, ";\n");
3665 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
3670 static parser_t *parser;
3675 parser = (parser_t*)mem_a(sizeof(parser_t));
3679 memset(parser, 0, sizeof(*parser));
3681 for (i = 0; i < operator_count; ++i) {
3682 if (operators[i].id == opid1('=')) {
3683 parser->assign_op = operators+i;
3687 if (!parser->assign_op) {
3688 printf("internal error: initializing parser: failed to find assign operator\n");
3695 bool parser_compile()
3697 /* initial lexer/parser state */
3698 parser->lex->flags.noops = true;
3700 if (parser_next(parser))
3702 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
3704 if (!parser_global_statement(parser)) {
3705 if (parser->tok == TOKEN_EOF)
3706 parseerror(parser, "unexpected eof");
3707 else if (!parser->errors)
3708 parseerror(parser, "there have been errors, bailing out");
3709 lex_close(parser->lex);
3715 parseerror(parser, "parse error");
3716 lex_close(parser->lex);
3721 lex_close(parser->lex);
3724 return !parser->errors;
3727 bool parser_compile_file(const char *filename)
3729 parser->lex = lex_open(filename);
3731 con_err("failed to open file \"%s\"\n", filename);
3734 return parser_compile();
3737 bool parser_compile_string_len(const char *name, const char *str, size_t len)
3739 parser->lex = lex_open_string(str, len, name);
3741 con_err("failed to create lexer for string \"%s\"\n", name);
3744 return parser_compile();
3747 bool parser_compile_string(const char *name, const char *str)
3749 parser->lex = lex_open_string(str, strlen(str), name);
3751 con_err("failed to create lexer for string \"%s\"\n", name);
3754 return parser_compile();
3757 void parser_cleanup()
3760 for (i = 0; i < vec_size(parser->accessors); ++i) {
3761 ast_delete(parser->accessors[i]->constval.vfunc);
3762 parser->accessors[i]->constval.vfunc = NULL;
3763 ast_delete(parser->accessors[i]);
3765 for (i = 0; i < vec_size(parser->functions); ++i) {
3766 ast_delete(parser->functions[i]);
3768 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
3769 ast_delete(parser->imm_vector[i]);
3771 for (i = 0; i < vec_size(parser->imm_string); ++i) {
3772 ast_delete(parser->imm_string[i]);
3774 for (i = 0; i < vec_size(parser->imm_float); ++i) {
3775 ast_delete(parser->imm_float[i]);
3777 for (i = 0; i < vec_size(parser->fields); ++i) {
3778 ast_delete(parser->fields[i].var);
3779 mem_d(parser->fields[i].name);
3781 for (i = 0; i < vec_size(parser->globals); ++i) {
3782 ast_delete(parser->globals[i].var);
3783 mem_d(parser->globals[i].name);
3785 vec_free(parser->accessors);
3786 vec_free(parser->functions);
3787 vec_free(parser->imm_vector);
3788 vec_free(parser->imm_string);
3789 vec_free(parser->imm_float);
3790 vec_free(parser->globals);
3791 vec_free(parser->fields);
3792 vec_free(parser->locals);
3797 bool parser_finish(const char *output)
3803 if (!parser->errors)
3805 ir = ir_builder_new("gmqcc_out");
3807 con_out("failed to allocate builder\n");
3811 for (i = 0; i < vec_size(parser->fields); ++i) {
3814 if (!ast_istype(parser->fields[i].var, ast_value))
3816 field = (ast_value*)parser->fields[i].var;
3817 isconst = field->isconst;
3818 field->isconst = false;
3819 if (!ast_global_codegen((ast_value*)field, ir, true)) {
3820 con_out("failed to generate field %s\n", field->name);
3821 ir_builder_delete(ir);
3826 ast_expression *subtype;
3827 field->isconst = true;
3828 subtype = field->expression.next;
3829 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
3830 if (subtype->expression.vtype == TYPE_FIELD)
3831 ifld->fieldtype = subtype->expression.next->expression.vtype;
3832 else if (subtype->expression.vtype == TYPE_FUNCTION)
3833 ifld->outtype = subtype->expression.next->expression.vtype;
3834 (void)!ir_value_set_field(field->ir_v, ifld);
3837 for (i = 0; i < vec_size(parser->globals); ++i) {
3839 if (!ast_istype(parser->globals[i].var, ast_value))
3841 asvalue = (ast_value*)(parser->globals[i].var);
3842 if (!asvalue->uses && !asvalue->isconst && asvalue->expression.vtype != TYPE_FUNCTION) {
3843 if (strcmp(asvalue->name, "end_sys_globals") &&
3844 strcmp(asvalue->name, "end_sys_fields"))
3846 retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
3847 "unused global: `%s`", asvalue->name);
3850 if (!ast_global_codegen(asvalue, ir, false)) {
3851 con_out("failed to generate global %s\n", parser->globals[i].name);
3852 ir_builder_delete(ir);
3856 for (i = 0; i < vec_size(parser->imm_float); ++i) {
3857 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
3858 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
3859 ir_builder_delete(ir);
3863 for (i = 0; i < vec_size(parser->imm_string); ++i) {
3864 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
3865 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
3866 ir_builder_delete(ir);
3870 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
3871 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
3872 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
3873 ir_builder_delete(ir);
3877 for (i = 0; i < vec_size(parser->globals); ++i) {
3879 if (!ast_istype(parser->globals[i].var, ast_value))
3881 asvalue = (ast_value*)(parser->globals[i].var);
3882 if (asvalue->setter) {
3883 if (!ast_global_codegen(asvalue->setter, ir, false) ||
3884 !ast_function_codegen(asvalue->setter->constval.vfunc, ir) ||
3885 !ir_function_finalize(asvalue->setter->constval.vfunc->ir_func))
3887 printf("failed to generate setter for %s\n", parser->globals[i].name);
3888 ir_builder_delete(ir);
3892 if (asvalue->getter) {
3893 if (!ast_global_codegen(asvalue->getter, ir, false) ||
3894 !ast_function_codegen(asvalue->getter->constval.vfunc, ir) ||
3895 !ir_function_finalize(asvalue->getter->constval.vfunc->ir_func))
3897 printf("failed to generate getter for %s\n", parser->globals[i].name);
3898 ir_builder_delete(ir);
3903 for (i = 0; i < vec_size(parser->fields); ++i) {
3905 asvalue = (ast_value*)(parser->fields[i].var->expression.next);
3907 if (!ast_istype((ast_expression*)asvalue, ast_value))
3909 if (asvalue->expression.vtype != TYPE_ARRAY)
3911 if (asvalue->setter) {
3912 if (!ast_global_codegen(asvalue->setter, ir, false) ||
3913 !ast_function_codegen(asvalue->setter->constval.vfunc, ir) ||
3914 !ir_function_finalize(asvalue->setter->constval.vfunc->ir_func))
3916 printf("failed to generate setter for %s\n", parser->fields[i].name);
3917 ir_builder_delete(ir);
3921 if (asvalue->getter) {
3922 if (!ast_global_codegen(asvalue->getter, ir, false) ||
3923 !ast_function_codegen(asvalue->getter->constval.vfunc, ir) ||
3924 !ir_function_finalize(asvalue->getter->constval.vfunc->ir_func))
3926 printf("failed to generate getter for %s\n", parser->fields[i].name);
3927 ir_builder_delete(ir);
3932 for (i = 0; i < vec_size(parser->functions); ++i) {
3933 if (!ast_function_codegen(parser->functions[i], ir)) {
3934 con_out("failed to generate function %s\n", parser->functions[i]->name);
3935 ir_builder_delete(ir);
3940 ir_builder_dump(ir, con_out);
3941 for (i = 0; i < vec_size(parser->functions); ++i) {
3942 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
3943 con_out("failed to finalize function %s\n", parser->functions[i]->name);
3944 ir_builder_delete(ir);
3951 ir_builder_dump(ir, con_out);
3953 generate_checksum(parser);
3955 if (!ir_builder_generate(ir, output)) {
3956 con_out("*** failed to generate output file\n");
3957 ir_builder_delete(ir);
3962 ir_builder_delete(ir);
3966 con_out("*** there were compile errors\n");