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 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
887 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
888 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
892 if (ast_istype(exprs[0], ast_entfield))
893 assignop = type_storep_instr[exprs[0]->expression.vtype];
895 assignop = type_store_instr[exprs[0]->expression.vtype];
896 switch (exprs[0]->expression.vtype) {
898 out = (ast_expression*)ast_binstore_new(ctx, assignop,
899 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
903 out = (ast_expression*)ast_binstore_new(ctx, assignop,
904 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
908 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
909 type_name[exprs[0]->expression.vtype],
910 type_name[exprs[1]->expression.vtype]);
918 parseerror(parser, "failed to apply operand %s", op->op);
922 DEBUGSHUNTDO(con_out("applied %s\n", op->op));
923 vec_push(sy->out, syexp(ctx, out));
927 static bool parser_close_call(parser_t *parser, shunt *sy)
929 /* was a function call */
936 vec_shrinkby(sy->ops, 1);
937 fid = sy->ops[vec_size(sy->ops)].off;
939 /* out[fid] is the function
940 * everything above is parameters...
942 * 1 params = ast_expression
946 if (vec_size(sy->out) < 1 || vec_size(sy->out) <= fid) {
947 parseerror(parser, "internal error: function call needs function and parameter list...");
951 fun = sy->out[fid].out;
953 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
955 parseerror(parser, "out of memory");
959 if (fid+1 == vec_size(sy->out)) {
962 } else if (fid+2 == vec_size(sy->out)) {
964 vec_shrinkby(sy->out, 1);
965 params = sy->out[vec_size(sy->out)].block;
969 vec_push(call->params, sy->out[vec_size(sy->out)].out);
971 paramcount = vec_size(params->exprs);
972 call->params = params->exprs;
973 params->exprs = NULL;
976 if (!ast_call_check_types(call))
979 parseerror(parser, "invalid function call");
983 /* overwrite fid, the function, with a call */
984 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
986 if (fun->expression.vtype != TYPE_FUNCTION) {
987 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
991 if (!fun->expression.next) {
992 parseerror(parser, "could not determine function return type");
995 if (vec_size(fun->expression.params) != paramcount &&
996 !(fun->expression.variadic &&
997 vec_size(fun->expression.params) < paramcount))
1000 const char *fewmany = (vec_size(fun->expression.params) > paramcount) ? "few" : "many";
1002 fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1003 if (opts_standard == COMPILER_GMQCC)
1006 parseerror(parser, "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 parseerror(parser, "too %s parameters for function call: expected %i, got %i\n"
1012 " -> `%s` has been declared here: %s:%i",
1013 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1014 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1020 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1021 "too %s parameters for call to %s: expected %i, got %i\n"
1022 " -> `%s` has been declared here: %s:%i",
1023 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1024 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1026 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1027 "too %s parameters for function call: expected %i, got %i\n"
1028 " -> `%s` has been declared here: %s:%i",
1029 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1030 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1038 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
1040 if (!vec_size(sy->ops)) {
1041 parseerror(parser, "unmatched closing paren");
1044 /* this would for bit a + (x) because there are no operators inside (x)
1045 if (sy->ops[vec_size(sy->ops)-1].paren == 1) {
1046 parseerror(parser, "empty parenthesis expression");
1050 while (vec_size(sy->ops)) {
1051 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_FUNC) {
1052 if (!parser_close_call(parser, sy))
1056 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_EXPR) {
1057 vec_shrinkby(sy->ops, 1);
1058 return !functions_only;
1060 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_INDEX) {
1063 /* pop off the parenthesis */
1064 vec_shrinkby(sy->ops, 1);
1065 /* then apply the index operator */
1066 if (!parser_sy_pop(parser, sy))
1070 if (!parser_sy_pop(parser, sy))
1076 static void parser_reclassify_token(parser_t *parser)
1079 for (i = 0; i < operator_count; ++i) {
1080 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1081 parser->tok = TOKEN_OPERATOR;
1087 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma)
1089 ast_expression *expr = NULL;
1091 bool wantop = false;
1092 bool gotmemberof = false;
1094 /* count the parens because an if starts with one, so the
1095 * end of a condition is an unmatched closing paren
1103 parser->lex->flags.noops = false;
1105 parser_reclassify_token(parser);
1110 gotmemberof = false;
1112 parser->memberof = 0;
1114 if (parser->tok == TOKEN_IDENT)
1116 ast_expression *var;
1118 parseerror(parser, "expected operator or end of statement");
1123 if (opts_standard == COMPILER_GMQCC)
1125 if (parser->memberof == TYPE_ENTITY) {
1126 /* still get vars first since there could be a fieldpointer */
1127 var = parser_find_var(parser, parser_tokval(parser));
1129 var = parser_find_field(parser, parser_tokval(parser));
1131 else if (parser->memberof == TYPE_VECTOR)
1133 parseerror(parser, "TODO: implement effective vector member access");
1136 else if (parser->memberof) {
1137 parseerror(parser, "namespace for member not found");
1141 var = parser_find_var(parser, parser_tokval(parser));
1143 var = parser_find_var(parser, parser_tokval(parser));
1145 var = parser_find_field(parser, parser_tokval(parser));
1148 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1151 if (ast_istype(var, ast_value))
1152 ((ast_value*)var)->uses++;
1153 vec_push(sy.out, syexp(parser_ctx(parser), var));
1154 DEBUGSHUNTDO(con_out("push %s\n", parser_tokval(parser)));
1156 else if (parser->tok == TOKEN_FLOATCONST) {
1159 parseerror(parser, "expected operator or end of statement, got constant");
1163 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1166 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1167 DEBUGSHUNTDO(con_out("push %g\n", parser_token(parser)->constval.f));
1169 else if (parser->tok == TOKEN_INTCONST) {
1172 parseerror(parser, "expected operator or end of statement, got constant");
1176 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1179 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1180 DEBUGSHUNTDO(con_out("push %i\n", parser_token(parser)->constval.i));
1182 else if (parser->tok == TOKEN_STRINGCONST) {
1185 parseerror(parser, "expected operator or end of statement, got constant");
1189 val = parser_const_string(parser, parser_tokval(parser));
1192 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1193 DEBUGSHUNTDO(con_out("push string\n"));
1195 else if (parser->tok == TOKEN_VECTORCONST) {
1198 parseerror(parser, "expected operator or end of statement, got constant");
1202 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1205 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1206 DEBUGSHUNTDO(con_out("push '%g %g %g'\n",
1207 parser_token(parser)->constval.v.x,
1208 parser_token(parser)->constval.v.y,
1209 parser_token(parser)->constval.v.z));
1211 else if (parser->tok == '(') {
1212 parseerror(parser, "internal error: '(' should be classified as operator");
1215 else if (parser->tok == '[') {
1216 parseerror(parser, "internal error: '[' should be classified as operator");
1219 else if (parser->tok == ')') {
1221 DEBUGSHUNTDO(con_out("do[op] )\n"));
1225 /* we do expect an operator next */
1226 /* closing an opening paren */
1227 if (!parser_close_paren(parser, &sy, false))
1230 DEBUGSHUNTDO(con_out("do[nop] )\n"));
1234 /* allowed for function calls */
1235 if (!parser_close_paren(parser, &sy, true))
1240 else if (parser->tok == ']') {
1242 parseerror(parser, "operand expected");
1246 if (!parser_close_paren(parser, &sy, false))
1250 else if (parser->tok != TOKEN_OPERATOR) {
1252 parseerror(parser, "expected operator or end of statement");
1259 /* classify the operator */
1260 /* TODO: suffix operators */
1261 const oper_info *op;
1262 const oper_info *olast = NULL;
1264 for (o = 0; o < operator_count; ++o) {
1265 if ((!(operators[o].flags & OP_PREFIX) == wantop) &&
1266 !(operators[o].flags & OP_SUFFIX) && /* remove this */
1267 !strcmp(parser_tokval(parser), operators[o].op))
1272 if (o == operator_count) {
1273 /* no operator found... must be the end of the statement */
1276 /* found an operator */
1279 /* when declaring variables, a comma starts a new variable */
1280 if (op->id == opid1(',') && !parens && stopatcomma) {
1281 /* fixup the token */
1286 /* a colon without a pervious question mark cannot be a ternary */
1287 if (!ternaries && op->id == opid2(':','?')) {
1292 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1293 olast = &operators[vec_last(sy.ops).etype-1];
1296 (op->prec < olast->prec) ||
1297 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1299 if (!parser_sy_pop(parser, &sy))
1301 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1302 olast = &operators[vec_last(sy.ops).etype-1];
1307 if (op->id == opid1('.') && opts_standard == COMPILER_GMQCC) {
1308 /* for gmqcc standard: open up the namespace of the previous type */
1309 ast_expression *prevex = vec_last(sy.out).out;
1311 parseerror(parser, "unexpected member operator");
1314 if (prevex->expression.vtype == TYPE_ENTITY)
1315 parser->memberof = TYPE_ENTITY;
1316 else if (prevex->expression.vtype == TYPE_VECTOR)
1317 parser->memberof = TYPE_VECTOR;
1319 parseerror(parser, "type error: type has no members");
1325 if (op->id == opid1('(')) {
1327 size_t sycount = vec_size(sy.out);
1328 DEBUGSHUNTDO(con_out("push [op] (\n"));
1330 /* we expected an operator, this is the function-call operator */
1331 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_FUNC, sycount-1));
1334 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_EXPR, 0));
1335 DEBUGSHUNTDO(con_out("push [nop] (\n"));
1338 } else if (op->id == opid1('[')) {
1340 parseerror(parser, "unexpected array subscript");
1344 /* push both the operator and the paren, this makes life easier */
1345 vec_push(sy.ops, syop(parser_ctx(parser), op));
1346 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_INDEX, 0));
1348 } else if (op->id == opid2('?',':')) {
1350 vec_push(sy.ops, syop(parser_ctx(parser), op));
1353 } else if (op->id == opid2(':','?')) {
1354 /* we don't push this operator */
1358 DEBUGSHUNTDO(con_out("push operator %s\n", op->op));
1359 vec_push(sy.ops, syop(parser_ctx(parser), op));
1363 if (!parser_next(parser)) {
1366 if (parser->tok == ';' ||
1367 (!parens && parser->tok == ']'))
1373 while (vec_size(sy.ops)) {
1374 if (!parser_sy_pop(parser, &sy))
1378 parser->lex->flags.noops = true;
1379 if (!vec_size(sy.out)) {
1380 parseerror(parser, "empty expression");
1383 expr = sy.out[0].out;
1386 DEBUGSHUNTDO(con_out("shunt done\n"));
1390 parser->lex->flags.noops = true;
1396 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma)
1398 ast_expression *e = parse_expression_leave(parser, stopatcomma);
1401 if (!parser_next(parser)) {
1408 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
1411 ast_expression *cond, *ontrue, *onfalse = NULL;
1414 lex_ctx ctx = parser_ctx(parser);
1416 (void)block; /* not touching */
1418 /* skip the 'if', parse an optional 'not' and check for an opening paren */
1419 if (!parser_next(parser)) {
1420 parseerror(parser, "expected condition or 'not'");
1423 if (parser->tok == TOKEN_KEYWORD && !strcmp(parser_tokval(parser), "not")) {
1425 if (!parser_next(parser)) {
1426 parseerror(parser, "expected condition in parenthesis");
1430 if (parser->tok != '(') {
1431 parseerror(parser, "expected 'if' condition in parenthesis");
1434 /* parse into the expression */
1435 if (!parser_next(parser)) {
1436 parseerror(parser, "expected 'if' condition after opening paren");
1439 /* parse the condition */
1440 cond = parse_expression_leave(parser, false);
1444 if (parser->tok != ')') {
1445 parseerror(parser, "expected closing paren after 'if' condition");
1449 /* parse into the 'then' branch */
1450 if (!parser_next(parser)) {
1451 parseerror(parser, "expected statement for on-true branch of 'if'");
1455 ontrue = parse_statement_or_block(parser);
1460 /* check for an else */
1461 if (!strcmp(parser_tokval(parser), "else")) {
1462 /* parse into the 'else' branch */
1463 if (!parser_next(parser)) {
1464 parseerror(parser, "expected on-false branch after 'else'");
1469 onfalse = parse_statement_or_block(parser);
1478 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
1480 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
1481 *out = (ast_expression*)ifthen;
1485 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
1488 ast_expression *cond, *ontrue;
1490 lex_ctx ctx = parser_ctx(parser);
1492 (void)block; /* not touching */
1494 /* skip the 'while' and check for opening paren */
1495 if (!parser_next(parser) || parser->tok != '(') {
1496 parseerror(parser, "expected 'while' condition in parenthesis");
1499 /* parse into the expression */
1500 if (!parser_next(parser)) {
1501 parseerror(parser, "expected 'while' condition after opening paren");
1504 /* parse the condition */
1505 cond = parse_expression_leave(parser, false);
1509 if (parser->tok != ')') {
1510 parseerror(parser, "expected closing paren after 'while' condition");
1514 /* parse into the 'then' branch */
1515 if (!parser_next(parser)) {
1516 parseerror(parser, "expected while-loop body");
1520 ontrue = parse_statement_or_block(parser);
1526 aloop = ast_loop_new(ctx, NULL, cond, NULL, NULL, ontrue);
1527 *out = (ast_expression*)aloop;
1531 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
1534 ast_expression *cond, *ontrue;
1536 lex_ctx ctx = parser_ctx(parser);
1538 (void)block; /* not touching */
1540 /* skip the 'do' and get the body */
1541 if (!parser_next(parser)) {
1542 parseerror(parser, "expected loop body");
1545 ontrue = parse_statement_or_block(parser);
1549 /* expect the "while" */
1550 if (parser->tok != TOKEN_KEYWORD ||
1551 strcmp(parser_tokval(parser), "while"))
1553 parseerror(parser, "expected 'while' and condition");
1558 /* skip the 'while' and check for opening paren */
1559 if (!parser_next(parser) || parser->tok != '(') {
1560 parseerror(parser, "expected 'while' condition in parenthesis");
1564 /* parse into the expression */
1565 if (!parser_next(parser)) {
1566 parseerror(parser, "expected 'while' condition after opening paren");
1570 /* parse the condition */
1571 cond = parse_expression_leave(parser, false);
1575 if (parser->tok != ')') {
1576 parseerror(parser, "expected closing paren after 'while' condition");
1582 if (!parser_next(parser) || parser->tok != ';') {
1583 parseerror(parser, "expected semicolon after condition");
1589 if (!parser_next(parser)) {
1590 parseerror(parser, "parse error");
1596 aloop = ast_loop_new(ctx, NULL, NULL, cond, NULL, ontrue);
1597 *out = (ast_expression*)aloop;
1601 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
1604 ast_expression *initexpr, *cond, *increment, *ontrue;
1605 size_t oldblocklocal;
1608 lex_ctx ctx = parser_ctx(parser);
1610 oldblocklocal = parser->blocklocal;
1611 parser->blocklocal = vec_size(parser->locals);
1618 /* skip the 'while' and check for opening paren */
1619 if (!parser_next(parser) || parser->tok != '(') {
1620 parseerror(parser, "expected 'for' expressions in parenthesis");
1623 /* parse into the expression */
1624 if (!parser_next(parser)) {
1625 parseerror(parser, "expected 'for' initializer after opening paren");
1629 if (parser->tok == TOKEN_TYPENAME) {
1630 if (opts_standard != COMPILER_GMQCC) {
1631 if (parsewarning(parser, WARN_EXTENSIONS,
1632 "current standard does not allow variable declarations in for-loop initializers"))
1636 parseerror(parser, "TODO: assignment of new variables to be non-const");
1638 if (!parse_variable(parser, block, true))
1641 else if (parser->tok != ';')
1643 initexpr = parse_expression_leave(parser, false);
1648 /* move on to condition */
1649 if (parser->tok != ';') {
1650 parseerror(parser, "expected semicolon after for-loop initializer");
1653 if (!parser_next(parser)) {
1654 parseerror(parser, "expected for-loop condition");
1658 /* parse the condition */
1659 if (parser->tok != ';') {
1660 cond = parse_expression_leave(parser, false);
1665 /* move on to incrementor */
1666 if (parser->tok != ';') {
1667 parseerror(parser, "expected semicolon after for-loop initializer");
1670 if (!parser_next(parser)) {
1671 parseerror(parser, "expected for-loop condition");
1675 /* parse the incrementor */
1676 if (parser->tok != ')') {
1677 increment = parse_expression_leave(parser, false);
1680 if (!ast_istype(increment, ast_store) &&
1681 !ast_istype(increment, ast_call) &&
1682 !ast_istype(increment, ast_binstore))
1684 if (genwarning(ast_ctx(increment), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
1690 if (parser->tok != ')') {
1691 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
1694 /* parse into the 'then' branch */
1695 if (!parser_next(parser)) {
1696 parseerror(parser, "expected for-loop body");
1699 ontrue = parse_statement_or_block(parser);
1704 aloop = ast_loop_new(ctx, initexpr, cond, NULL, increment, ontrue);
1705 *out = (ast_expression*)aloop;
1707 while (vec_size(parser->locals) > parser->blocklocal)
1708 retval = retval && parser_pop_local(parser);
1709 parser->blocklocal = oldblocklocal;
1712 if (initexpr) ast_delete(initexpr);
1713 if (cond) ast_delete(cond);
1714 if (increment) ast_delete(increment);
1715 while (vec_size(parser->locals) > parser->blocklocal)
1716 (void)!parser_pop_local(parser);
1717 parser->blocklocal = oldblocklocal;
1721 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
1723 ast_expression *exp = NULL;
1724 ast_return *ret = NULL;
1725 ast_value *expected = parser->function->vtype;
1727 (void)block; /* not touching */
1729 if (!parser_next(parser)) {
1730 parseerror(parser, "expected return expression");
1734 if (parser->tok != ';') {
1735 exp = parse_expression(parser, false);
1739 if (exp->expression.vtype != expected->expression.next->expression.vtype) {
1740 parseerror(parser, "return with invalid expression");
1743 ret = ast_return_new(exp->expression.node.context, exp);
1749 if (!parser_next(parser))
1750 parseerror(parser, "parse error");
1751 if (expected->expression.next->expression.vtype != TYPE_VOID) {
1752 if (opts_standard != COMPILER_GMQCC)
1753 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
1755 parseerror(parser, "return without value");
1757 ret = ast_return_new(parser_ctx(parser), NULL);
1759 *out = (ast_expression*)ret;
1763 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
1765 lex_ctx ctx = parser_ctx(parser);
1767 (void)block; /* not touching */
1769 if (!parser_next(parser) || parser->tok != ';') {
1770 parseerror(parser, "expected semicolon");
1774 if (!parser_next(parser))
1775 parseerror(parser, "parse error");
1777 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue);
1781 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
1783 ast_expression *operand;
1785 ast_switch *switchnode;
1786 ast_switch_case swcase;
1788 lex_ctx ctx = parser_ctx(parser);
1790 (void)block; /* not touching */
1792 /* parse over the opening paren */
1793 if (!parser_next(parser) || parser->tok != '(') {
1794 parseerror(parser, "expected switch operand in parenthesis");
1798 /* parse into the expression */
1799 if (!parser_next(parser)) {
1800 parseerror(parser, "expected switch operand");
1803 /* parse the operand */
1804 operand = parse_expression_leave(parser, false);
1808 if (!OPTS_FLAG(RELAXED_SWITCH)) {
1809 opval = (ast_value*)operand;
1810 if (!ast_istype(operand, ast_value) || !opval->isconst) {
1811 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
1817 switchnode = ast_switch_new(ctx, operand);
1820 if (parser->tok != ')') {
1821 ast_delete(switchnode);
1822 parseerror(parser, "expected closing paren after 'switch' operand");
1826 /* parse over the opening paren */
1827 if (!parser_next(parser) || parser->tok != '{') {
1828 ast_delete(switchnode);
1829 parseerror(parser, "expected list of cases");
1833 if (!parser_next(parser)) {
1834 ast_delete(switchnode);
1835 parseerror(parser, "expected 'case' or 'default'");
1840 while (parser->tok != '}') {
1841 ast_block *caseblock;
1843 if (parser->tok != TOKEN_KEYWORD) {
1844 ast_delete(switchnode);
1845 parseerror(parser, "expected 'case' or 'default'");
1848 if (!strcmp(parser_tokval(parser), "case")) {
1849 if (!parser_next(parser)) {
1850 ast_delete(switchnode);
1851 parseerror(parser, "expected expression for case");
1854 swcase.value = parse_expression_leave(parser, false);
1855 if (!swcase.value) {
1856 ast_delete(switchnode);
1857 parseerror(parser, "expected expression for case");
1861 else if (!strcmp(parser_tokval(parser), "default")) {
1862 swcase.value = NULL;
1863 if (!parser_next(parser)) {
1864 ast_delete(switchnode);
1865 parseerror(parser, "expected colon");
1870 /* Now the colon and body */
1871 if (parser->tok != ':') {
1872 if (swcase.value) ast_unref(swcase.value);
1873 ast_delete(switchnode);
1874 parseerror(parser, "expected colon");
1878 if (!parser_next(parser)) {
1879 if (swcase.value) ast_unref(swcase.value);
1880 ast_delete(switchnode);
1881 parseerror(parser, "expected statements or case");
1884 caseblock = ast_block_new(parser_ctx(parser));
1886 if (swcase.value) ast_unref(swcase.value);
1887 ast_delete(switchnode);
1890 swcase.code = (ast_expression*)caseblock;
1891 vec_push(switchnode->cases, swcase);
1893 ast_expression *expr;
1894 if (parser->tok == '}')
1896 if (parser->tok == TOKEN_KEYWORD) {
1897 if (!strcmp(parser_tokval(parser), "case") ||
1898 !strcmp(parser_tokval(parser), "default"))
1903 if (!parse_statement(parser, caseblock, &expr, true)) {
1904 ast_delete(switchnode);
1909 vec_push(caseblock->exprs, expr);
1914 if (parser->tok != '}') {
1915 ast_delete(switchnode);
1916 parseerror(parser, "expected closing paren of case list");
1919 if (!parser_next(parser)) {
1920 ast_delete(switchnode);
1921 parseerror(parser, "parse error after switch");
1924 *out = (ast_expression*)switchnode;
1928 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
1930 if (parser->tok == TOKEN_TYPENAME || parser->tok == '.')
1932 /* local variable */
1934 parseerror(parser, "cannot declare a variable from here");
1937 if (opts_standard == COMPILER_QCC) {
1938 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
1941 if (!parse_variable(parser, block, false))
1946 else if (parser->tok == TOKEN_KEYWORD)
1948 if (!strcmp(parser_tokval(parser), "local"))
1951 parseerror(parser, "cannot declare a local variable here");
1954 if (!parser_next(parser)) {
1955 parseerror(parser, "expected variable declaration");
1958 if (!parse_variable(parser, block, true))
1963 else if (!strcmp(parser_tokval(parser), "return"))
1965 return parse_return(parser, block, out);
1967 else if (!strcmp(parser_tokval(parser), "if"))
1969 return parse_if(parser, block, out);
1971 else if (!strcmp(parser_tokval(parser), "while"))
1973 return parse_while(parser, block, out);
1975 else if (!strcmp(parser_tokval(parser), "do"))
1977 return parse_dowhile(parser, block, out);
1979 else if (!strcmp(parser_tokval(parser), "for"))
1981 if (opts_standard == COMPILER_QCC) {
1982 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
1985 return parse_for(parser, block, out);
1987 else if (!strcmp(parser_tokval(parser), "break"))
1989 return parse_break_continue(parser, block, out, false);
1991 else if (!strcmp(parser_tokval(parser), "continue"))
1993 return parse_break_continue(parser, block, out, true);
1995 else if (!strcmp(parser_tokval(parser), "switch"))
1997 return parse_switch(parser, block, out);
1999 else if (!strcmp(parser_tokval(parser), "case") ||
2000 !strcmp(parser_tokval(parser), "default"))
2003 parseerror(parser, "unexpected 'case' label");
2008 parseerror(parser, "Unexpected keyword");
2011 else if (parser->tok == '{')
2014 inner = parse_block(parser, false);
2017 *out = (ast_expression*)inner;
2022 ast_expression *exp = parse_expression(parser, false);
2026 if (!ast_istype(exp, ast_store) &&
2027 !ast_istype(exp, ast_call) &&
2028 !ast_istype(exp, ast_binstore))
2030 if (genwarning(ast_ctx(exp), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2037 static bool GMQCC_WARN parser_pop_local(parser_t *parser)
2042 ve = &vec_last(parser->locals);
2043 if (!parser->errors) {
2044 if (ast_istype(ve->var, ast_value) && !(((ast_value*)(ve->var))->uses)) {
2045 if (parsewarning(parser, WARN_UNUSED_VARIABLE, "unused variable: `%s`", ve->name))
2050 vec_pop(parser->locals);
2054 static bool parse_block_into(parser_t *parser, ast_block *block, bool warnreturn)
2056 size_t oldblocklocal;
2059 oldblocklocal = parser->blocklocal;
2060 parser->blocklocal = vec_size(parser->locals);
2062 if (!parser_next(parser)) { /* skip the '{' */
2063 parseerror(parser, "expected function body");
2067 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
2069 ast_expression *expr;
2070 if (parser->tok == '}')
2073 if (!parse_statement(parser, block, &expr, false)) {
2074 /* parseerror(parser, "parse error"); */
2080 vec_push(block->exprs, expr);
2083 if (parser->tok != '}') {
2086 if (warnreturn && parser->function->vtype->expression.next->expression.vtype != TYPE_VOID)
2088 if (!vec_size(block->exprs) ||
2089 !ast_istype(vec_last(block->exprs), ast_return))
2091 if (parsewarning(parser, WARN_MISSING_RETURN_VALUES, "control reaches end of non-void function")) {
2097 (void)parser_next(parser);
2101 while (vec_size(parser->locals) > parser->blocklocal)
2102 retval = retval && parser_pop_local(parser);
2103 parser->blocklocal = oldblocklocal;
2107 static ast_block* parse_block(parser_t *parser, bool warnreturn)
2110 block = ast_block_new(parser_ctx(parser));
2113 if (!parse_block_into(parser, block, warnreturn)) {
2114 ast_block_delete(block);
2120 static ast_expression* parse_statement_or_block(parser_t *parser)
2122 ast_expression *expr = NULL;
2123 if (parser->tok == '{')
2124 return (ast_expression*)parse_block(parser, false);
2125 if (!parse_statement(parser, NULL, &expr, false))
2131 static bool create_vector_members(ast_value *var, varentry_t *ve)
2134 size_t len = strlen(var->name);
2136 for (i = 0; i < 3; ++i) {
2137 ve[i].var = (ast_expression*)ast_member_new(ast_ctx(var), (ast_expression*)var, i);
2141 ve[i].name = (char*)mem_a(len+3);
2143 ast_delete(ve[i].var);
2147 memcpy(ve[i].name, var->name, len);
2148 ve[i].name[len] = '_';
2149 ve[i].name[len+1] = 'x'+i;
2150 ve[i].name[len+2] = 0;
2159 ast_delete(ve[i].var);
2166 static bool parse_function_body(parser_t *parser, ast_value *var)
2168 ast_block *block = NULL;
2173 ast_expression *framenum = NULL;
2174 ast_expression *nextthink = NULL;
2175 /* None of the following have to be deleted */
2176 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
2177 ast_expression *gbl_time = NULL, *gbl_self = NULL;
2178 bool has_frame_think;
2182 has_frame_think = false;
2183 old = parser->function;
2185 if (var->expression.variadic) {
2186 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
2187 "variadic function with implementation will not be able to access additional parameters"))
2193 if (parser->tok == '[') {
2194 /* got a frame definition: [ framenum, nextthink ]
2195 * this translates to:
2196 * self.frame = framenum;
2197 * self.nextthink = time + 0.1;
2198 * self.think = nextthink;
2202 fld_think = parser_find_field(parser, "think");
2203 fld_nextthink = parser_find_field(parser, "nextthink");
2204 fld_frame = parser_find_field(parser, "frame");
2205 if (!fld_think || !fld_nextthink || !fld_frame) {
2206 parseerror(parser, "cannot use [frame,think] notation without the required fields");
2207 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
2210 gbl_time = parser_find_global(parser, "time");
2211 gbl_self = parser_find_global(parser, "self");
2212 if (!gbl_time || !gbl_self) {
2213 parseerror(parser, "cannot use [frame,think] notation without the required globals");
2214 parseerror(parser, "please declare the following globals: `time`, `self`");
2218 if (!parser_next(parser))
2221 framenum = parse_expression_leave(parser, true);
2223 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
2226 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->isconst) {
2227 ast_unref(framenum);
2228 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
2232 if (parser->tok != ',') {
2233 ast_unref(framenum);
2234 parseerror(parser, "expected comma after frame number in [frame,think] notation");
2235 parseerror(parser, "Got a %i\n", parser->tok);
2239 if (!parser_next(parser)) {
2240 ast_unref(framenum);
2244 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
2246 /* qc allows the use of not-yet-declared functions here
2247 * - this automatically creates a prototype */
2249 ast_value *thinkfunc;
2250 ast_expression *functype = fld_think->expression.next;
2252 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
2253 if (!thinkfunc || !ast_type_adopt(thinkfunc, functype)) {
2254 ast_unref(framenum);
2255 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
2259 if (!parser_next(parser)) {
2260 ast_unref(framenum);
2261 ast_delete(thinkfunc);
2265 varent.var = (ast_expression*)thinkfunc;
2266 varent.name = util_strdup(thinkfunc->name);
2267 vec_push(parser->globals, varent);
2268 nextthink = (ast_expression*)thinkfunc;
2271 nextthink = parse_expression_leave(parser, true);
2273 ast_unref(framenum);
2274 parseerror(parser, "expected a think-function in [frame,think] notation");
2279 if (!ast_istype(nextthink, ast_value)) {
2280 parseerror(parser, "think-function in [frame,think] notation must be a constant");
2284 if (retval && parser->tok != ']') {
2285 parseerror(parser, "expected closing `]` for [frame,think] notation");
2289 if (retval && !parser_next(parser)) {
2293 if (retval && parser->tok != '{') {
2294 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
2299 ast_unref(nextthink);
2300 ast_unref(framenum);
2304 has_frame_think = true;
2307 block = ast_block_new(parser_ctx(parser));
2309 parseerror(parser, "failed to allocate block");
2310 if (has_frame_think) {
2311 ast_unref(nextthink);
2312 ast_unref(framenum);
2317 if (has_frame_think) {
2319 ast_expression *self_frame;
2320 ast_expression *self_nextthink;
2321 ast_expression *self_think;
2322 ast_expression *time_plus_1;
2323 ast_store *store_frame;
2324 ast_store *store_nextthink;
2325 ast_store *store_think;
2327 ctx = parser_ctx(parser);
2328 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
2329 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
2330 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
2332 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
2333 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
2335 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
2336 if (self_frame) ast_delete(self_frame);
2337 if (self_nextthink) ast_delete(self_nextthink);
2338 if (self_think) ast_delete(self_think);
2339 if (time_plus_1) ast_delete(time_plus_1);
2345 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
2346 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
2347 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
2350 ast_delete(self_frame);
2353 if (!store_nextthink) {
2354 ast_delete(self_nextthink);
2358 ast_delete(self_think);
2362 if (store_frame) ast_delete(store_frame);
2363 if (store_nextthink) ast_delete(store_nextthink);
2364 if (store_think) ast_delete(store_think);
2367 vec_push(block->exprs, (ast_expression*)store_frame);
2368 vec_push(block->exprs, (ast_expression*)store_nextthink);
2369 vec_push(block->exprs, (ast_expression*)store_think);
2373 parseerror(parser, "failed to generate code for [frame,think]");
2374 ast_unref(nextthink);
2375 ast_unref(framenum);
2381 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
2384 ast_value *param = var->expression.params[parami];
2386 if (param->expression.vtype != TYPE_VECTOR &&
2387 (param->expression.vtype != TYPE_FIELD ||
2388 param->expression.next->expression.vtype != TYPE_VECTOR))
2393 if (!create_vector_members(param, ve)) {
2394 ast_block_delete(block);
2398 for (e = 0; e < 3; ++e) {
2399 vec_push(parser->locals, ve[e]);
2400 ast_block_collect(block, ve[e].var);
2401 ve[e].var = NULL; /* collected */
2405 func = ast_function_new(ast_ctx(var), var->name, var);
2407 parseerror(parser, "failed to allocate function for `%s`", var->name);
2408 ast_block_delete(block);
2411 vec_push(parser->functions, func);
2413 parser->function = func;
2414 if (!parse_block_into(parser, block, true)) {
2415 ast_block_delete(block);
2419 vec_push(func->blocks, block);
2421 parser->function = old;
2422 while (vec_size(parser->locals))
2423 retval = retval && parser_pop_local(parser);
2425 if (parser->tok == ';')
2426 return parser_next(parser);
2427 else if (opts_standard == COMPILER_QCC)
2428 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
2432 vec_pop(parser->functions);
2433 ast_function_delete(func);
2434 var->constval.vfunc = NULL;
2437 while (vec_size(parser->locals)) {
2438 mem_d(vec_last(parser->locals).name);
2439 vec_pop(parser->locals);
2441 parser->function = old;
2445 static ast_expression *array_accessor_split(
2450 ast_expression *left,
2451 ast_expression *right
2457 lex_ctx ctx = ast_ctx(array);
2459 if (!left || !right) {
2460 if (left) ast_delete(left);
2461 if (right) ast_delete(right);
2465 cmp = ast_binary_new(ctx, INSTR_LT,
2466 (ast_expression*)index,
2467 (ast_expression*)parser_const_float(parser, middle));
2471 parseerror(parser, "internal error: failed to create comparison for array setter");
2475 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
2477 ast_delete(cmp); /* will delete left and right */
2478 parseerror(parser, "internal error: failed to create conditional jump for array setter");
2482 return (ast_expression*)ifthen;
2485 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
2487 lex_ctx ctx = ast_ctx(array);
2489 if (from+1 == afterend) {
2490 /* set this value */
2493 ast_array_index *subscript;
2495 int assignop = type_store_instr[value->expression.vtype];
2497 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
2498 assignop = INSTR_STORE_V;
2500 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
2504 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
2506 ast_delete(subscript);
2510 block = ast_block_new(ctx);
2516 vec_push(block->exprs, (ast_expression*)st);
2518 ret = ast_return_new(ctx, NULL);
2524 vec_push(block->exprs, (ast_expression*)ret);
2526 return (ast_expression*)block;
2528 ast_expression *left, *right;
2529 size_t diff = afterend - from;
2530 size_t middle = from + diff/2;
2531 left = array_setter_node(parser, array, index, value, from, middle);
2532 right = array_setter_node(parser, array, index, value, middle, afterend);
2533 return array_accessor_split(parser, array, index, middle, left, right);
2537 static ast_expression *array_field_setter_node(
2546 lex_ctx ctx = ast_ctx(array);
2548 if (from+1 == afterend) {
2549 /* set this value */
2552 ast_entfield *entfield;
2553 ast_array_index *subscript;
2555 int assignop = type_storep_instr[value->expression.vtype];
2557 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
2558 assignop = INSTR_STOREP_V;
2560 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
2564 entfield = ast_entfield_new_force(ctx,
2565 (ast_expression*)entity,
2566 (ast_expression*)subscript,
2567 (ast_expression*)subscript);
2569 ast_delete(subscript);
2573 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
2575 ast_delete(entfield);
2579 block = ast_block_new(ctx);
2585 vec_push(block->exprs, (ast_expression*)st);
2587 ret = ast_return_new(ctx, NULL);
2593 vec_push(block->exprs, (ast_expression*)ret);
2595 return (ast_expression*)block;
2597 ast_expression *left, *right;
2598 size_t diff = afterend - from;
2599 size_t middle = from + diff/2;
2600 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
2601 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
2602 return array_accessor_split(parser, array, index, middle, left, right);
2606 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
2608 lex_ctx ctx = ast_ctx(array);
2610 if (from+1 == afterend) {
2612 ast_array_index *subscript;
2614 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
2618 ret = ast_return_new(ctx, (ast_expression*)subscript);
2620 ast_delete(subscript);
2624 return (ast_expression*)ret;
2626 ast_expression *left, *right;
2627 size_t diff = afterend - from;
2628 size_t middle = from + diff/2;
2629 left = array_getter_node(parser, array, index, from, middle);
2630 right = array_getter_node(parser, array, index, middle, afterend);
2631 return array_accessor_split(parser, array, index, middle, left, right);
2635 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
2637 ast_function *func = NULL;
2638 ast_value *fval = NULL;
2639 ast_block *body = NULL;
2641 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
2643 parseerror(parser, "failed to create accessor function value");
2647 func = ast_function_new(ast_ctx(array), funcname, fval);
2650 parseerror(parser, "failed to create accessor function node");
2654 body = ast_block_new(ast_ctx(array));
2656 parseerror(parser, "failed to create block for array accessor");
2662 vec_push(func->blocks, body);
2665 vec_push(parser->accessors, fval);
2670 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
2672 ast_expression *root = NULL;
2673 ast_value *index = NULL;
2674 ast_value *value = NULL;
2678 if (!ast_istype(array->expression.next, ast_value)) {
2679 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
2683 if (!parser_create_array_accessor(parser, array, funcname, &fval))
2685 func = fval->constval.vfunc;
2686 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
2688 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
2689 value = ast_value_copy((ast_value*)array->expression.next);
2691 if (!index || !value) {
2692 parseerror(parser, "failed to create locals for array accessor");
2695 (void)!ast_value_set_name(value, "value"); /* not important */
2696 vec_push(fval->expression.params, index);
2697 vec_push(fval->expression.params, value);
2699 root = array_setter_node(parser, array, index, value, 0, array->expression.count);
2701 parseerror(parser, "failed to build accessor search tree");
2705 vec_push(func->blocks[0]->exprs, root);
2706 array->setter = fval;
2709 if (index) ast_delete(index);
2710 if (value) ast_delete(value);
2711 if (root) ast_delete(root);
2717 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
2719 ast_expression *root = NULL;
2720 ast_value *entity = NULL;
2721 ast_value *index = NULL;
2722 ast_value *value = NULL;
2726 if (!ast_istype(array->expression.next, ast_value)) {
2727 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
2731 if (!parser_create_array_accessor(parser, array, funcname, &fval))
2733 func = fval->constval.vfunc;
2734 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
2736 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
2737 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
2738 value = ast_value_copy((ast_value*)array->expression.next);
2739 if (!entity || !index || !value) {
2740 parseerror(parser, "failed to create locals for array accessor");
2743 (void)!ast_value_set_name(value, "value"); /* not important */
2744 vec_push(fval->expression.params, entity);
2745 vec_push(fval->expression.params, index);
2746 vec_push(fval->expression.params, value);
2748 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
2750 parseerror(parser, "failed to build accessor search tree");
2754 vec_push(func->blocks[0]->exprs, root);
2755 array->setter = fval;
2758 if (entity) ast_delete(entity);
2759 if (index) ast_delete(index);
2760 if (value) ast_delete(value);
2761 if (root) ast_delete(root);
2767 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
2769 ast_expression *root = NULL;
2770 ast_value *index = NULL;
2774 /* NOTE: checking array->expression.next rather than elemtype since
2775 * for fields elemtype is a temporary fieldtype.
2777 if (!ast_istype(array->expression.next, ast_value)) {
2778 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
2782 if (!parser_create_array_accessor(parser, array, funcname, &fval))
2784 func = fval->constval.vfunc;
2785 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
2787 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
2790 parseerror(parser, "failed to create locals for array accessor");
2793 vec_push(fval->expression.params, index);
2795 root = array_getter_node(parser, array, index, 0, array->expression.count);
2797 parseerror(parser, "failed to build accessor search tree");
2801 vec_push(func->blocks[0]->exprs, root);
2802 array->getter = fval;
2805 if (index) ast_delete(index);
2806 if (root) ast_delete(root);
2812 static ast_value *parse_typename(parser_t *parser, ast_value **storebase);
2813 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
2821 bool variadic = false;
2823 ctx = parser_ctx(parser);
2825 /* for the sake of less code we parse-in in this function */
2826 if (!parser_next(parser)) {
2827 parseerror(parser, "expected parameter list");
2833 /* parse variables until we hit a closing paren */
2834 while (parser->tok != ')') {
2836 /* there must be commas between them */
2837 if (parser->tok != ',') {
2838 parseerror(parser, "expected comma or end of parameter list");
2841 if (!parser_next(parser)) {
2842 parseerror(parser, "expected parameter");
2848 if (parser->tok == TOKEN_DOTS) {
2849 /* '...' indicates a varargs function */
2851 if (!parser_next(parser)) {
2852 parseerror(parser, "expected parameter");
2855 if (parser->tok != ')') {
2856 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
2862 /* for anything else just parse a typename */
2863 param = parse_typename(parser, NULL);
2866 vec_push(params, param);
2867 if (param->expression.vtype >= TYPE_VARIANT) {
2868 char typename[1024];
2869 ast_type_to_string((ast_expression*)param, typename, sizeof(typename));
2870 parseerror(parser, "type not supported as part of a parameter list: %s", typename);
2877 if (vec_size(params) > 8 && opts_standard == COMPILER_QCC)
2878 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
2881 if (!parser_next(parser)) {
2882 parseerror(parser, "parse error after typename");
2886 /* now turn 'var' into a function type */
2887 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
2888 fval->expression.next = (ast_expression*)var;
2889 fval->expression.variadic = variadic;
2892 var->expression.params = params;
2899 for (i = 0; i < vec_size(params); ++i)
2900 ast_delete(params[i]);
2905 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
2907 ast_expression *cexp;
2908 ast_value *cval, *tmp;
2911 ctx = parser_ctx(parser);
2913 if (!parser_next(parser)) {
2915 parseerror(parser, "expected array-size");
2919 cexp = parse_expression_leave(parser, true);
2921 if (!cexp || !ast_istype(cexp, ast_value)) {
2925 parseerror(parser, "expected array-size as constant positive integer");
2928 cval = (ast_value*)cexp;
2930 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
2931 tmp->expression.next = (ast_expression*)var;
2934 if (cval->expression.vtype == TYPE_INTEGER)
2935 tmp->expression.count = cval->constval.vint;
2936 else if (cval->expression.vtype == TYPE_FLOAT)
2937 tmp->expression.count = cval->constval.vfloat;
2941 parseerror(parser, "array-size must be a positive integer constant");
2946 if (parser->tok != ']') {
2948 parseerror(parser, "expected ']' after array-size");
2951 if (!parser_next(parser)) {
2953 parseerror(parser, "error after parsing array size");
2959 /* Parse a complete typename.
2960 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
2961 * but when parsing variables separated by comma
2962 * 'storebase' should point to where the base-type should be kept.
2963 * The base type makes up every bit of type information which comes *before* the
2966 * The following will be parsed in its entirety:
2968 * The 'basetype' in this case is 'void()'
2969 * and if there's a comma after it, say:
2971 * then the type-information 'void()' can be stored in 'storebase'
2973 static ast_value *parse_typename(parser_t *parser, ast_value **storebase)
2975 ast_value *var, *tmp;
2978 const char *name = NULL;
2979 bool isfield = false;
2980 bool wasarray = false;
2982 ctx = parser_ctx(parser);
2984 /* types may start with a dot */
2985 if (parser->tok == '.') {
2987 /* if we parsed a dot we need a typename now */
2988 if (!parser_next(parser)) {
2989 parseerror(parser, "expected typename for field definition");
2992 if (parser->tok != TOKEN_TYPENAME) {
2993 parseerror(parser, "expected typename");
2998 /* generate the basic type value */
2999 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
3000 /* do not yet turn into a field - remember:
3001 * .void() foo; is a field too
3002 * .void()() foo; is a function
3006 if (!parser_next(parser)) {
3008 parseerror(parser, "parse error after typename");
3012 /* an opening paren now starts the parameter-list of a function
3013 * this is where original-QC has parameter lists.
3014 * We allow a single parameter list here.
3015 * Much like fteqcc we don't allow `float()() x`
3017 if (parser->tok == '(') {
3018 var = parse_parameter_list(parser, var);
3023 /* store the base if requested */
3025 *storebase = ast_value_copy(var);
3027 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3028 tmp->expression.next = (ast_expression*)*storebase;
3033 /* there may be a name now */
3034 if (parser->tok == TOKEN_IDENT) {
3035 name = util_strdup(parser_tokval(parser));
3037 if (!parser_next(parser)) {
3039 parseerror(parser, "error after variable or field declaration");
3044 /* now this may be an array */
3045 if (parser->tok == '[') {
3047 var = parse_arraysize(parser, var);
3052 /* This is the point where we can turn it into a field */
3054 /* turn it into a field if desired */
3055 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3056 tmp->expression.next = (ast_expression*)var;
3060 /* now there may be function parens again */
3061 if (parser->tok == '(' && opts_standard == COMPILER_QCC)
3062 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3063 if (parser->tok == '(' && wasarray)
3064 parseerror(parser, "arrays as part of a return type is not supported");
3065 while (parser->tok == '(') {
3066 var = parse_parameter_list(parser, var);
3075 /* finally name it */
3077 if (!ast_value_set_name(var, name)) {
3079 parseerror(parser, "internal error: failed to set name");
3082 /* free the name, ast_value_set_name duplicates */
3089 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields)
3093 ast_expression *old;
3097 ast_value *basetype = NULL;
3099 bool isparam = false;
3100 bool isvector = false;
3101 bool cleanvar = true;
3102 bool wasarray = false;
3104 varentry_t varent, ve[3];
3106 /* get the first complete variable */
3107 var = parse_typename(parser, &basetype);
3110 ast_delete(basetype);
3114 memset(&varent, 0, sizeof(varent));
3115 memset(&ve, 0, sizeof(ve));
3121 /* Part 0: finish the type */
3122 if (parser->tok == '(') {
3123 if (opts_standard == COMPILER_QCC)
3124 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3125 var = parse_parameter_list(parser, var);
3131 /* we only allow 1-dimensional arrays */
3132 if (parser->tok == '[') {
3134 var = parse_arraysize(parser, var);
3140 if (parser->tok == '(' && wasarray) {
3141 parseerror(parser, "arrays as part of a return type is not supported");
3142 /* we'll still parse the type completely for now */
3144 /* for functions returning functions */
3145 while (parser->tok == '(') {
3146 if (opts_standard == COMPILER_QCC)
3147 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3148 var = parse_parameter_list(parser, var);
3156 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
3157 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
3158 * is then filled with the previous definition and the parameter-names replaced.
3161 /* Deal with end_sys_ vars */
3163 if (!strcmp(var->name, "end_sys_globals")) {
3164 parser->crc_globals = vec_size(parser->globals);
3167 else if (!strcmp(var->name, "end_sys_fields")) {
3168 parser->crc_fields = vec_size(parser->fields);
3171 if (was_end && var->expression.vtype == TYPE_FIELD) {
3172 if (parsewarning(parser, WARN_END_SYS_FIELDS,
3173 "global '%s' hint should not be a field",
3174 parser_tokval(parser)))
3181 if (!nofields && var->expression.vtype == TYPE_FIELD)
3183 /* deal with field declarations */
3184 old = parser_find_field(parser, var->name);
3186 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
3187 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
3196 parseerror(parser, "field `%s` already declared here: %s:%i",
3197 var->name, ast_ctx(old).file, ast_ctx(old).line);
3202 if (opts_standard == COMPILER_QCC &&
3203 (old = parser_find_global(parser, var->name)))
3205 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
3206 parseerror(parser, "field `%s` already declared here: %s:%i",
3207 var->name, ast_ctx(old).file, ast_ctx(old).line);
3214 /* deal with other globals */
3215 old = parser_find_global(parser, var->name);
3216 if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
3218 /* This is a function which had a prototype */
3219 if (!ast_istype(old, ast_value)) {
3220 parseerror(parser, "internal error: prototype is not an ast_value");
3224 proto = (ast_value*)old;
3225 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
3226 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
3228 ast_ctx(proto).file, ast_ctx(proto).line);
3232 /* we need the new parameter-names */
3233 for (i = 0; i < vec_size(proto->expression.params); ++i)
3234 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
3242 parseerror(parser, "global `%s` already declared here: %s:%i",
3243 var->name, ast_ctx(old).file, ast_ctx(old).line);
3247 if (opts_standard == COMPILER_QCC &&
3248 (old = parser_find_field(parser, var->name)))
3250 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
3251 parseerror(parser, "global `%s` already declared here: %s:%i",
3252 var->name, ast_ctx(old).file, ast_ctx(old).line);
3259 else /* it's not a global */
3261 old = parser_find_local(parser, var->name, parser->blocklocal, &isparam);
3262 if (old && !isparam) {
3263 parseerror(parser, "local `%s` already declared here: %s:%i",
3264 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
3268 old = parser_find_local(parser, var->name, 0, &isparam);
3269 if (old && isparam) {
3270 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
3271 "local `%s` is shadowing a parameter", var->name))
3273 parseerror(parser, "local `%s` already declared here: %s:%i",
3274 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
3278 if (opts_standard != COMPILER_GMQCC) {
3287 * Create the global/local, and deal with vector types.
3290 if (var->expression.vtype == TYPE_VECTOR)
3292 else if (var->expression.vtype == TYPE_FIELD &&
3293 var->expression.next->expression.vtype == TYPE_VECTOR)
3297 if (!create_vector_members(var, ve)) {
3303 varent.name = util_strdup(var->name);
3304 varent.var = (ast_expression*)var;
3307 /* deal with global variables, fields, functions */
3308 if (!nofields && var->expression.vtype == TYPE_FIELD) {
3309 vec_push(parser->fields, varent);
3311 for (i = 0; i < 3; ++i)
3312 vec_push(parser->fields, ve[i]);
3316 vec_push(parser->globals, varent);
3318 for (i = 0; i < 3; ++i)
3319 vec_push(parser->globals, ve[i]);
3323 vec_push(parser->locals, varent);
3324 vec_push(localblock->locals, var);
3326 for (i = 0; i < 3; ++i) {
3327 vec_push(parser->locals, ve[i]);
3328 ast_block_collect(localblock, ve[i].var);
3329 ve[i].var = NULL; /* from here it's being collected in the block */
3335 ve[0].name = ve[1].name = ve[2].name = NULL;
3336 ve[0].var = ve[1].var = ve[2].var = NULL;
3342 if (var->expression.vtype == TYPE_ARRAY) {
3344 snprintf(name, sizeof(name), "%s##SET", var->name);
3345 if (!parser_create_array_setter(parser, var, name))
3347 snprintf(name, sizeof(name), "%s##GET", var->name);
3348 if (!parser_create_array_getter(parser, var, var->expression.next, name))
3351 else if (!localblock && !nofields &&
3352 var->expression.vtype == TYPE_FIELD &&
3353 var->expression.next->expression.vtype == TYPE_ARRAY)
3356 ast_expression *telem;
3358 ast_value *array = (ast_value*)var->expression.next;
3360 if (!ast_istype(var->expression.next, ast_value)) {
3361 parseerror(parser, "internal error: field element type must be an ast_value");
3365 snprintf(name, sizeof(name), "%s##SETF", var->name);
3366 if (!parser_create_array_field_setter(parser, array, name))
3369 telem = ast_type_copy(ast_ctx(var), array->expression.next);
3370 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
3371 tfield->expression.next = telem;
3372 snprintf(name, sizeof(name), "%s##GETFP", var->name);
3373 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
3381 if (parser->tok == ';') {
3382 ast_delete(basetype);
3383 if (!parser_next(parser)) {
3384 parseerror(parser, "error after variable declaration");
3390 if (parser->tok == ',')
3393 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
3394 parseerror(parser, "missing comma or semicolon while parsing variables");
3398 if (localblock && opts_standard == COMPILER_QCC) {
3399 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
3400 "initializing expression turns variable `%s` into a constant in this standard",
3407 if (parser->tok != '{') {
3408 if (parser->tok != '=') {
3409 parseerror(parser, "missing semicolon or initializer");
3413 if (!parser_next(parser)) {
3414 parseerror(parser, "error parsing initializer");
3418 else if (opts_standard == COMPILER_QCC) {
3419 parseerror(parser, "expected '=' before function body in this standard");
3422 if (parser->tok == '#') {
3426 parseerror(parser, "cannot declare builtins within functions");
3429 if (var->expression.vtype != TYPE_FUNCTION) {
3430 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
3433 if (!parser_next(parser)) {
3434 parseerror(parser, "expected builtin number");
3437 if (parser->tok != TOKEN_INTCONST) {
3438 parseerror(parser, "builtin number must be an integer constant");
3441 if (parser_token(parser)->constval.i <= 0) {
3442 parseerror(parser, "builtin number must be an integer greater than zero");
3446 func = ast_function_new(ast_ctx(var), var->name, var);
3448 parseerror(parser, "failed to allocate function for `%s`", var->name);
3451 vec_push(parser->functions, func);
3453 func->builtin = -parser_token(parser)->constval.i;
3455 if (!parser_next(parser)) {
3456 parseerror(parser, "expected comma or semicolon");
3457 ast_function_delete(func);
3458 var->constval.vfunc = NULL;
3462 else if (parser->tok == '{' || parser->tok == '[')
3465 parseerror(parser, "cannot declare functions within functions");
3469 if (!parse_function_body(parser, var))
3471 ast_delete(basetype);
3474 ast_expression *cexp;
3477 cexp = parse_expression_leave(parser, true);
3482 cval = (ast_value*)cexp;
3483 if (!ast_istype(cval, ast_value) || !cval->isconst)
3484 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
3487 var->isconst = true;
3488 if (cval->expression.vtype == TYPE_STRING)
3489 var->constval.vstring = parser_strdup(cval->constval.vstring);
3491 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
3495 shunt sy = { NULL, NULL };
3496 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
3497 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
3498 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
3499 if (!parser_sy_pop(parser, &sy))
3502 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
3503 parseerror(parser, "internal error: leaked operands");
3504 vec_push(localblock->exprs, (ast_expression*)sy.out[0].out);
3512 if (parser->tok == ',') {
3513 if (!parser_next(parser)) {
3514 parseerror(parser, "expected another variable");
3518 if (parser->tok != TOKEN_IDENT) {
3519 parseerror(parser, "expected another variable");
3522 var = ast_value_copy(basetype);
3524 ast_value_set_name(var, parser_tokval(parser));
3525 if (!parser_next(parser)) {
3526 parseerror(parser, "error parsing variable declaration");
3532 if (parser->tok != ';') {
3533 parseerror(parser, "missing semicolon after variables");
3537 if (!parser_next(parser)) {
3538 parseerror(parser, "parse error after variable declaration");
3542 ast_delete(basetype);
3546 if (cleanvar && var)
3548 ast_delete(basetype);
3552 ast_delete(basetype);
3553 if (cleanvar && var)
3555 if (varent.name) mem_d(varent.name);
3556 if (ve[0].name) mem_d(ve[0].name);
3557 if (ve[1].name) mem_d(ve[1].name);
3558 if (ve[2].name) mem_d(ve[2].name);
3559 if (ve[0].var) mem_d(ve[0].var);
3560 if (ve[1].var) mem_d(ve[1].var);
3561 if (ve[2].var) mem_d(ve[2].var);
3565 static bool parser_global_statement(parser_t *parser)
3567 if (parser->tok == TOKEN_TYPENAME || parser->tok == '.')
3569 return parse_variable(parser, NULL, false);
3571 else if (parser->tok == TOKEN_KEYWORD)
3573 /* handle 'var' and 'const' */
3574 if (!strcmp(parser_tokval(parser), "var")) {
3575 if (!parser_next(parser)) {
3576 parseerror(parser, "expected variable declaration after 'var'");
3579 return parse_variable(parser, NULL, true);
3583 else if (parser->tok == '$')
3585 if (!parser_next(parser)) {
3586 parseerror(parser, "parse error");
3592 parseerror(parser, "unexpected token: %s", parser->lex->tok.value);
3598 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
3600 return util_crc16(old, str, strlen(str));
3603 static void progdefs_crc_file(const char *str)
3605 /* write to progdefs.h here */
3609 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
3611 old = progdefs_crc_sum(old, str);
3612 progdefs_crc_file(str);
3616 static void generate_checksum(parser_t *parser)
3618 uint16_t crc = 0xFFFF;
3621 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
3622 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
3624 progdefs_crc_file("\tint\tpad;\n");
3625 progdefs_crc_file("\tint\tofs_return[3];\n");
3626 progdefs_crc_file("\tint\tofs_parm0[3];\n");
3627 progdefs_crc_file("\tint\tofs_parm1[3];\n");
3628 progdefs_crc_file("\tint\tofs_parm2[3];\n");
3629 progdefs_crc_file("\tint\tofs_parm3[3];\n");
3630 progdefs_crc_file("\tint\tofs_parm4[3];\n");
3631 progdefs_crc_file("\tint\tofs_parm5[3];\n");
3632 progdefs_crc_file("\tint\tofs_parm6[3];\n");
3633 progdefs_crc_file("\tint\tofs_parm7[3];\n");
3635 for (i = 0; i < parser->crc_globals; ++i) {
3636 if (!ast_istype(parser->globals[i].var, ast_value))
3638 switch (parser->globals[i].var->expression.vtype) {
3639 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
3640 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
3641 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
3642 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
3644 crc = progdefs_crc_both(crc, "\tint\t");
3647 crc = progdefs_crc_both(crc, parser->globals[i].name);
3648 crc = progdefs_crc_both(crc, ";\n");
3650 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
3651 for (i = 0; i < parser->crc_fields; ++i) {
3652 if (!ast_istype(parser->fields[i].var, ast_value))
3654 switch (parser->fields[i].var->expression.next->expression.vtype) {
3655 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
3656 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
3657 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
3658 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
3660 crc = progdefs_crc_both(crc, "\tint\t");
3663 crc = progdefs_crc_both(crc, parser->fields[i].name);
3664 crc = progdefs_crc_both(crc, ";\n");
3666 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
3671 static parser_t *parser;
3676 parser = (parser_t*)mem_a(sizeof(parser_t));
3680 memset(parser, 0, sizeof(*parser));
3682 for (i = 0; i < operator_count; ++i) {
3683 if (operators[i].id == opid1('=')) {
3684 parser->assign_op = operators+i;
3688 if (!parser->assign_op) {
3689 printf("internal error: initializing parser: failed to find assign operator\n");
3696 bool parser_compile()
3698 /* initial lexer/parser state */
3699 parser->lex->flags.noops = true;
3701 if (parser_next(parser))
3703 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
3705 if (!parser_global_statement(parser)) {
3706 if (parser->tok == TOKEN_EOF)
3707 parseerror(parser, "unexpected eof");
3708 else if (!parser->errors)
3709 parseerror(parser, "there have been errors, bailing out");
3710 lex_close(parser->lex);
3716 parseerror(parser, "parse error");
3717 lex_close(parser->lex);
3722 lex_close(parser->lex);
3725 return !parser->errors;
3728 bool parser_compile_file(const char *filename)
3730 parser->lex = lex_open(filename);
3732 con_err("failed to open file \"%s\"\n", filename);
3735 return parser_compile();
3738 bool parser_compile_string_len(const char *name, const char *str, size_t len)
3740 parser->lex = lex_open_string(str, len, name);
3742 con_err("failed to create lexer for string \"%s\"\n", name);
3745 return parser_compile();
3748 bool parser_compile_string(const char *name, const char *str)
3750 parser->lex = lex_open_string(str, strlen(str), name);
3752 con_err("failed to create lexer for string \"%s\"\n", name);
3755 return parser_compile();
3758 void parser_cleanup()
3761 for (i = 0; i < vec_size(parser->accessors); ++i) {
3762 ast_delete(parser->accessors[i]->constval.vfunc);
3763 parser->accessors[i]->constval.vfunc = NULL;
3764 ast_delete(parser->accessors[i]);
3766 for (i = 0; i < vec_size(parser->functions); ++i) {
3767 ast_delete(parser->functions[i]);
3769 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
3770 ast_delete(parser->imm_vector[i]);
3772 for (i = 0; i < vec_size(parser->imm_string); ++i) {
3773 ast_delete(parser->imm_string[i]);
3775 for (i = 0; i < vec_size(parser->imm_float); ++i) {
3776 ast_delete(parser->imm_float[i]);
3778 for (i = 0; i < vec_size(parser->fields); ++i) {
3779 ast_delete(parser->fields[i].var);
3780 mem_d(parser->fields[i].name);
3782 for (i = 0; i < vec_size(parser->globals); ++i) {
3783 ast_delete(parser->globals[i].var);
3784 mem_d(parser->globals[i].name);
3786 vec_free(parser->accessors);
3787 vec_free(parser->functions);
3788 vec_free(parser->imm_vector);
3789 vec_free(parser->imm_string);
3790 vec_free(parser->imm_float);
3791 vec_free(parser->globals);
3792 vec_free(parser->fields);
3793 vec_free(parser->locals);
3798 bool parser_finish(const char *output)
3804 if (!parser->errors)
3806 ir = ir_builder_new("gmqcc_out");
3808 con_out("failed to allocate builder\n");
3812 for (i = 0; i < vec_size(parser->fields); ++i) {
3815 if (!ast_istype(parser->fields[i].var, ast_value))
3817 field = (ast_value*)parser->fields[i].var;
3818 isconst = field->isconst;
3819 field->isconst = false;
3820 if (!ast_global_codegen((ast_value*)field, ir, true)) {
3821 con_out("failed to generate field %s\n", field->name);
3822 ir_builder_delete(ir);
3827 ast_expression *subtype;
3828 field->isconst = true;
3829 subtype = field->expression.next;
3830 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
3831 if (subtype->expression.vtype == TYPE_FIELD)
3832 ifld->fieldtype = subtype->expression.next->expression.vtype;
3833 else if (subtype->expression.vtype == TYPE_FUNCTION)
3834 ifld->outtype = subtype->expression.next->expression.vtype;
3835 (void)!ir_value_set_field(field->ir_v, ifld);
3838 for (i = 0; i < vec_size(parser->globals); ++i) {
3840 if (!ast_istype(parser->globals[i].var, ast_value))
3842 asvalue = (ast_value*)(parser->globals[i].var);
3843 if (!asvalue->uses && !asvalue->isconst && asvalue->expression.vtype != TYPE_FUNCTION) {
3844 if (strcmp(asvalue->name, "end_sys_globals") &&
3845 strcmp(asvalue->name, "end_sys_fields"))
3847 retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
3848 "unused global: `%s`", asvalue->name);
3851 if (!ast_global_codegen(asvalue, ir, false)) {
3852 con_out("failed to generate global %s\n", parser->globals[i].name);
3853 ir_builder_delete(ir);
3857 for (i = 0; i < vec_size(parser->imm_float); ++i) {
3858 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
3859 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
3860 ir_builder_delete(ir);
3864 for (i = 0; i < vec_size(parser->imm_string); ++i) {
3865 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
3866 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
3867 ir_builder_delete(ir);
3871 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
3872 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
3873 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
3874 ir_builder_delete(ir);
3878 for (i = 0; i < vec_size(parser->globals); ++i) {
3880 if (!ast_istype(parser->globals[i].var, ast_value))
3882 asvalue = (ast_value*)(parser->globals[i].var);
3883 if (asvalue->setter) {
3884 if (!ast_global_codegen(asvalue->setter, ir, false) ||
3885 !ast_function_codegen(asvalue->setter->constval.vfunc, ir) ||
3886 !ir_function_finalize(asvalue->setter->constval.vfunc->ir_func))
3888 printf("failed to generate setter for %s\n", parser->globals[i].name);
3889 ir_builder_delete(ir);
3893 if (asvalue->getter) {
3894 if (!ast_global_codegen(asvalue->getter, ir, false) ||
3895 !ast_function_codegen(asvalue->getter->constval.vfunc, ir) ||
3896 !ir_function_finalize(asvalue->getter->constval.vfunc->ir_func))
3898 printf("failed to generate getter for %s\n", parser->globals[i].name);
3899 ir_builder_delete(ir);
3904 for (i = 0; i < vec_size(parser->fields); ++i) {
3906 asvalue = (ast_value*)(parser->fields[i].var->expression.next);
3908 if (!ast_istype((ast_expression*)asvalue, ast_value))
3910 if (asvalue->expression.vtype != TYPE_ARRAY)
3912 if (asvalue->setter) {
3913 if (!ast_global_codegen(asvalue->setter, ir, false) ||
3914 !ast_function_codegen(asvalue->setter->constval.vfunc, ir) ||
3915 !ir_function_finalize(asvalue->setter->constval.vfunc->ir_func))
3917 printf("failed to generate setter for %s\n", parser->fields[i].name);
3918 ir_builder_delete(ir);
3922 if (asvalue->getter) {
3923 if (!ast_global_codegen(asvalue->getter, ir, false) ||
3924 !ast_function_codegen(asvalue->getter->constval.vfunc, ir) ||
3925 !ir_function_finalize(asvalue->getter->constval.vfunc->ir_func))
3927 printf("failed to generate getter for %s\n", parser->fields[i].name);
3928 ir_builder_delete(ir);
3933 for (i = 0; i < vec_size(parser->functions); ++i) {
3934 if (!ast_function_codegen(parser->functions[i], ir)) {
3935 con_out("failed to generate function %s\n", parser->functions[i]->name);
3936 ir_builder_delete(ir);
3941 ir_builder_dump(ir, con_out);
3942 for (i = 0; i < vec_size(parser->functions); ++i) {
3943 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
3944 con_out("failed to finalize function %s\n", parser->functions[i]->name);
3945 ir_builder_delete(ir);
3952 ir_builder_dump(ir, con_out);
3954 generate_checksum(parser);
3956 if (!ir_builder_generate(ir, output)) {
3957 con_out("*** failed to generate output file\n");
3958 ir_builder_delete(ir);
3963 ir_builder_delete(ir);
3967 con_out("*** there were compile errors\n");