16 MEM_VECTOR_MAKE(varentry_t, globals);
17 MEM_VECTOR_MAKE(varentry_t, fields);
18 MEM_VECTOR_MAKE(ast_function*, functions);
19 MEM_VECTOR_MAKE(ast_value*, imm_float);
20 MEM_VECTOR_MAKE(ast_value*, imm_string);
21 MEM_VECTOR_MAKE(ast_value*, imm_vector);
23 ast_value *imm_float_zero;
24 ast_value *imm_vector_zero;
26 ast_function *function;
27 MEM_VECTOR_MAKE(varentry_t, locals);
32 /* TYPE_FIELD -> parser_find_fields is used instead of find_var
33 * TODO: TYPE_VECTOR -> x, y and z are accepted in the gmqcc standard
34 * anything else: type error
39 MEM_VEC_FUNCTIONS(parser_t, varentry_t, globals)
40 MEM_VEC_FUNCTIONS(parser_t, varentry_t, fields)
41 MEM_VEC_FUNCTIONS(parser_t, ast_value*, imm_float)
42 MEM_VEC_FUNCTIONS(parser_t, ast_value*, imm_string)
43 MEM_VEC_FUNCTIONS(parser_t, ast_value*, imm_vector)
44 MEM_VEC_FUNCTIONS(parser_t, varentry_t, locals)
45 MEM_VEC_FUNCTIONS(parser_t, ast_function*, functions)
47 static bool GMQCC_WARN parser_pop_local(parser_t *parser);
48 static bool parser_variable(parser_t *parser, ast_block *localblock);
49 static ast_block* parser_parse_block(parser_t *parser, bool warnreturn);
50 static bool parser_parse_block_into(parser_t *parser, ast_block *block, bool warnreturn);
51 static ast_expression* parser_parse_statement_or_block(parser_t *parser);
52 static ast_expression* parser_expression_leave(parser_t *parser, bool stopatcomma);
53 static ast_expression* parser_expression(parser_t *parser, bool stopatcomma);
55 static void parseerror(parser_t *parser, const char *fmt, ...)
62 vprintmsg(LVL_ERROR, parser->lex->tok->ctx.file, parser->lex->tok->ctx.line, "parse error", fmt, ap);
66 /* returns true if it counts as an error */
67 static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
70 int lvl = LVL_WARNING;
72 if (!OPTS_WARN(warntype))
81 vprintmsg(lvl, parser->lex->tok->ctx.file, parser->lex->tok->ctx.line, "warning", fmt, ap);
87 static bool GMQCC_WARN genwarning(lex_ctx ctx, int warntype, const char *fmt, ...)
90 int lvl = LVL_WARNING;
92 if (!OPTS_WARN(warntype))
99 vprintmsg(lvl, ctx.file, ctx.line, "warning", fmt, ap);
105 /**********************************************************************
106 * some maths used for constant folding
109 vector vec3_add(vector a, vector b)
118 vector vec3_sub(vector a, vector b)
127 qcfloat vec3_mulvv(vector a, vector b)
129 return (a.x * b.x + a.y * b.y + a.z * b.z);
132 vector vec3_mulvf(vector a, float b)
141 /**********************************************************************
145 bool parser_next(parser_t *parser)
147 /* lex_do kills the previous token */
148 parser->tok = lex_do(parser->lex);
149 if (parser->tok == TOKEN_EOF)
151 if (parser->tok >= TOKEN_ERROR) {
152 parseerror(parser, "lex error");
158 /* lift a token out of the parser so it's not destroyed by parser_next */
159 token *parser_lift(parser_t *parser)
161 token *tok = parser->lex->tok;
162 parser->lex->tok = NULL;
166 #define parser_tokval(p) (p->lex->tok->value)
167 #define parser_token(p) (p->lex->tok)
168 #define parser_ctx(p) (p->lex->tok->ctx)
170 ast_value* parser_const_float(parser_t *parser, double d)
174 for (i = 0; i < parser->imm_float_count; ++i) {
175 if (parser->imm_float[i]->constval.vfloat == d)
176 return parser->imm_float[i];
178 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_FLOAT);
180 out->constval.vfloat = d;
181 if (!parser_t_imm_float_add(parser, out)) {
182 ast_value_delete(out);
188 ast_value* parser_const_float_0(parser_t *parser)
190 if (!parser->imm_float_zero)
191 parser->imm_float_zero = parser_const_float(parser, 0);
192 return parser->imm_float_zero;
195 static char *parser_strdup(const char *str)
198 /* actually dup empty strings */
199 char *out = mem_a(1);
203 return util_strdup(str);
206 ast_value* parser_const_string(parser_t *parser, const char *str)
210 for (i = 0; i < parser->imm_string_count; ++i) {
211 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
212 return parser->imm_string[i];
214 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
216 out->constval.vstring = parser_strdup(str);
217 if (!parser_t_imm_string_add(parser, out)) {
218 ast_value_delete(out);
224 ast_value* parser_const_vector(parser_t *parser, vector v)
228 for (i = 0; i < parser->imm_vector_count; ++i) {
229 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
230 return parser->imm_vector[i];
232 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
234 out->constval.vvec = v;
235 if (!parser_t_imm_vector_add(parser, out)) {
236 ast_value_delete(out);
242 ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
248 return parser_const_vector(parser, v);
251 ast_value* parser_const_vector_0(parser_t *parser)
253 if (!parser->imm_vector_zero)
254 parser->imm_vector_zero = parser_const_vector_f(parser, 0, 0, 0);
255 return parser->imm_vector_zero;
258 ast_expression* parser_find_field(parser_t *parser, const char *name)
261 for (i = 0; i < parser->fields_count; ++i) {
262 if (!strcmp(parser->fields[i].name, name))
263 return parser->fields[i].var;
268 ast_expression* parser_find_global(parser_t *parser, const char *name)
271 for (i = 0; i < parser->globals_count; ++i) {
272 if (!strcmp(parser->globals[i].name, name))
273 return parser->globals[i].var;
278 ast_expression* parser_find_param(parser_t *parser, const char *name)
282 if (!parser->function)
284 fun = parser->function->vtype;
285 for (i = 0; i < fun->expression.params_count; ++i) {
286 if (!strcmp(fun->expression.params[i]->name, name))
287 return (ast_expression*)(fun->expression.params[i]);
292 ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
296 for (i = parser->locals_count; i > upto;) {
298 if (!strcmp(parser->locals[i].name, name))
299 return parser->locals[i].var;
302 return parser_find_param(parser, name);
305 ast_expression* parser_find_var(parser_t *parser, const char *name)
309 v = parser_find_local(parser, name, 0, &dummy);
310 if (!v) v = parser_find_global(parser, name);
315 MEM_VECTOR_MAKE(ast_value*, p);
317 MEM_VEC_FUNCTIONS(paramlist_t, ast_value*, p)
319 static ast_value *parser_parse_type(parser_t *parser, int basetype, bool *isfunc)
323 lex_ctx ctx = parser_ctx(parser);
324 int vtype = basetype;
327 bool variadic = false;
329 MEM_VECTOR_INIT(¶ms, p);
333 if (parser->tok == '(') {
338 bool isfield = false;
339 bool isfuncparam = false;
341 if (!parser_next(parser))
344 if (parser->tok == ')')
347 if (parser->tok == '.') {
349 if (!parser_next(parser)) {
350 parseerror(parser, "expected field parameter type");
355 if (parser->tok == TOKEN_DOTS) {
358 if (!parser_next(parser))
360 if (parser->tok != ')') {
361 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
364 if (opts_standard == COMPILER_QCC) {
365 if (parsewarning(parser, WARN_EXTENSIONS, "variadic functions are not available in this standard"))
371 temptype = parser_token(parser)->constval.t;
372 if (!parser_next(parser))
375 param = parser_parse_type(parser, temptype, &isfuncparam);
380 if (parser->tok == TOKEN_IDENT) {
381 /* named parameter */
382 if (!ast_value_set_name(param, parser_tokval(parser)))
384 if (!parser_next(parser))
388 /* This comes before the isfield part! */
390 ast_value *fval = ast_value_new(ast_ctx(param), param->name, TYPE_FUNCTION);
395 fval->expression.next = (ast_expression*)param;
396 MEM_VECTOR_MOVE(¶m->expression, params, &fval->expression, params);
397 fval->expression.variadic = param->expression.variadic;
402 fld = ast_value_new(ctx, param->name, TYPE_FIELD);
403 fld->expression.next = (ast_expression*)param;
407 if (!paramlist_t_p_add(¶ms, param)) {
408 parseerror(parser, "Out of memory while parsing typename");
412 if (parser->tok == ',')
414 if (parser->tok == ')')
416 parseerror(parser, "Unexpected token");
419 if (!parser_next(parser))
423 var = ast_value_new(ctx, "<unnamed>", vtype);
426 var->expression.variadic = variadic;
427 MEM_VECTOR_MOVE(¶ms, p, &var->expression, params);
430 for (i = 0; i < params.p_count; ++i)
431 ast_value_delete(params.p[i]);
432 MEM_VECTOR_CLEAR(¶ms, p);
438 size_t etype; /* 0 = expression, others are operators */
442 ast_block *block; /* for commas and function calls */
447 MEM_VECTOR_MAKE(sy_elem, out);
448 MEM_VECTOR_MAKE(sy_elem, ops);
450 MEM_VEC_FUNCTIONS(shunt, sy_elem, out)
451 MEM_VEC_FUNCTIONS(shunt, sy_elem, ops)
453 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
463 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
466 e.out = (ast_expression*)v;
473 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
475 e.etype = 1 + (op - operators);
483 static sy_elem syparen(lex_ctx ctx, int p, size_t off) {
495 # define DEBUGSHUNTDO(x) x
497 # define DEBUGSHUNTDO(x)
500 static bool parser_sy_pop(parser_t *parser, shunt *sy)
504 ast_expression *out = NULL;
505 ast_expression *exprs[3];
506 ast_block *blocks[3];
507 ast_value *asvalue[3];
509 qcint generated_op = 0;
511 if (!sy->ops_count) {
512 parseerror(parser, "internal error: missing operator");
516 if (sy->ops[sy->ops_count-1].paren) {
517 parseerror(parser, "unmatched parenthesis");
521 op = &operators[sy->ops[sy->ops_count-1].etype - 1];
522 ctx = sy->ops[sy->ops_count-1].ctx;
524 DEBUGSHUNTDO(printf("apply %s\n", op->op));
526 if (sy->out_count < op->operands) {
527 parseerror(parser, "internal error: not enough operands: %i (operator %s (%i))", sy->out_count,
528 op->op, (int)op->id);
534 sy->out_count -= op->operands;
535 for (i = 0; i < op->operands; ++i) {
536 exprs[i] = sy->out[sy->out_count+i].out;
537 blocks[i] = sy->out[sy->out_count+i].block;
538 asvalue[i] = (ast_value*)exprs[i];
541 if (blocks[0] && !blocks[0]->exprs_count && op->id != opid1(',')) {
542 parseerror(parser, "internal error: operator cannot be applied on empty blocks");
546 #define NotSameType(T) \
547 (exprs[0]->expression.vtype != exprs[1]->expression.vtype || \
548 exprs[0]->expression.vtype != T)
549 #define CanConstFold1(A) \
550 (ast_istype((A), ast_value) && ((ast_value*)(A))->isconst)
551 #define CanConstFold(A, B) \
552 (CanConstFold1(A) && CanConstFold1(B))
553 #define ConstV(i) (asvalue[(i)]->constval.vvec)
554 #define ConstF(i) (asvalue[(i)]->constval.vfloat)
555 #define ConstS(i) (asvalue[(i)]->constval.vstring)
559 parseerror(parser, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
563 if (exprs[0]->expression.vtype == TYPE_ENTITY) {
564 if (exprs[1]->expression.vtype != TYPE_FIELD) {
565 parseerror(parser, "type error: right hand of member-operand should be an entity-field");
568 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
570 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
571 parseerror(parser, "internal error: vector access is not supposed to be handled at this point");
575 parseerror(parser, "type error: member-of operator on something that is not an entity or vector");
582 if (!ast_block_exprs_add(blocks[0], exprs[1]))
585 blocks[0] = ast_block_new(ctx);
586 if (!ast_block_exprs_add(blocks[0], exprs[0]) ||
587 !ast_block_exprs_add(blocks[0], exprs[1]))
592 if (!ast_block_set_type(blocks[0], exprs[1]))
595 sy->out[sy->out_count++] = syblock(ctx, blocks[0]);
599 switch (exprs[0]->expression.vtype) {
601 if (CanConstFold1(exprs[0]))
602 out = (ast_expression*)parser_const_float(parser, -ConstF(0));
604 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
605 (ast_expression*)parser_const_float_0(parser),
609 if (CanConstFold1(exprs[0]))
610 out = (ast_expression*)parser_const_vector_f(parser,
611 -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
613 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
614 (ast_expression*)parser_const_vector_0(parser),
618 parseerror(parser, "invalid types used in expression: cannot negate type %s",
619 type_name[exprs[0]->expression.vtype]);
625 switch (exprs[0]->expression.vtype) {
627 if (CanConstFold1(exprs[0]))
628 out = (ast_expression*)parser_const_float(parser, !ConstF(0));
630 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
633 if (CanConstFold1(exprs[0]))
634 out = (ast_expression*)parser_const_float(parser,
635 (!ConstV(0).x && !ConstV(0).y && !ConstV(0).z));
637 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
640 if (CanConstFold1(exprs[0]))
641 out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
643 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
645 /* we don't constant-fold NOT for these types */
647 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
650 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
653 parseerror(parser, "invalid types used in expression: cannot logically negate type %s",
654 type_name[exprs[0]->expression.vtype]);
660 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
661 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
663 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
664 type_name[exprs[0]->expression.vtype],
665 type_name[exprs[1]->expression.vtype]);
668 switch (exprs[0]->expression.vtype) {
670 if (CanConstFold(exprs[0], exprs[1]))
672 out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
675 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
678 if (CanConstFold(exprs[0], exprs[1]))
679 out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
681 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
684 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
685 type_name[exprs[0]->expression.vtype],
686 type_name[exprs[1]->expression.vtype]);
691 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
692 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
694 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
695 type_name[exprs[1]->expression.vtype],
696 type_name[exprs[0]->expression.vtype]);
699 switch (exprs[0]->expression.vtype) {
701 if (CanConstFold(exprs[0], exprs[1]))
702 out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
704 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
707 if (CanConstFold(exprs[0], exprs[1]))
708 out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
710 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
713 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
714 type_name[exprs[1]->expression.vtype],
715 type_name[exprs[0]->expression.vtype]);
720 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
721 exprs[0]->expression.vtype != TYPE_VECTOR &&
722 exprs[0]->expression.vtype != TYPE_FLOAT &&
723 exprs[1]->expression.vtype != TYPE_VECTOR &&
724 exprs[1]->expression.vtype != TYPE_FLOAT)
726 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
727 type_name[exprs[1]->expression.vtype],
728 type_name[exprs[0]->expression.vtype]);
731 switch (exprs[0]->expression.vtype) {
733 if (exprs[1]->expression.vtype == TYPE_VECTOR)
735 if (CanConstFold(exprs[0], exprs[1]))
736 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
738 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
742 if (CanConstFold(exprs[0], exprs[1]))
743 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
745 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
749 if (exprs[1]->expression.vtype == TYPE_FLOAT)
751 if (CanConstFold(exprs[0], exprs[1]))
752 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
754 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
758 if (CanConstFold(exprs[0], exprs[1]))
759 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
761 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
765 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
766 type_name[exprs[1]->expression.vtype],
767 type_name[exprs[0]->expression.vtype]);
772 if (NotSameType(TYPE_FLOAT)) {
773 parseerror(parser, "invalid types used in expression: cannot divide types %s and %s",
774 type_name[exprs[0]->expression.vtype],
775 type_name[exprs[1]->expression.vtype]);
778 if (CanConstFold(exprs[0], exprs[1]))
779 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
781 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
785 parseerror(parser, "qc does not have a modulo operator");
789 if (NotSameType(TYPE_FLOAT)) {
790 parseerror(parser, "invalid types used in expression: cannot perform bit operations between types %s and %s",
791 type_name[exprs[0]->expression.vtype],
792 type_name[exprs[1]->expression.vtype]);
795 if (CanConstFold(exprs[0], exprs[1]))
796 out = (ast_expression*)parser_const_float(parser,
797 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
798 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
800 out = (ast_expression*)ast_binary_new(ctx,
801 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
805 parseerror(parser, "TODO: bitxor");
810 case opid3('<','<','='):
811 case opid3('>','>','='):
812 parseerror(parser, "TODO: shifts");
816 generated_op += 1; /* INSTR_OR */
818 generated_op += INSTR_AND;
819 if (NotSameType(TYPE_FLOAT)) {
820 parseerror(parser, "invalid types used in expression: cannot perform logical operations between types %s and %s",
821 type_name[exprs[0]->expression.vtype],
822 type_name[exprs[1]->expression.vtype]);
823 parseerror(parser, "TODO: logical ops for arbitrary types using INSTR_NOT");
824 parseerror(parser, "TODO: optional early out");
827 if (opts_standard == COMPILER_GMQCC)
828 printf("TODO: early out logic\n");
829 if (CanConstFold(exprs[0], exprs[1]))
830 out = (ast_expression*)parser_const_float(parser,
831 (generated_op == INSTR_OR ? (ConstF(0) || ConstF(1)) : (ConstF(0) && ConstF(1))));
833 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
837 generated_op += 1; /* INSTR_GT */
839 generated_op += 1; /* INSTR_LT */
840 case opid2('>', '='):
841 generated_op += 1; /* INSTR_GE */
842 case opid2('<', '='):
843 generated_op += INSTR_LE;
844 if (NotSameType(TYPE_FLOAT)) {
845 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
846 type_name[exprs[0]->expression.vtype],
847 type_name[exprs[1]->expression.vtype]);
850 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
852 case opid2('!', '='):
853 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
854 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
855 type_name[exprs[0]->expression.vtype],
856 type_name[exprs[1]->expression.vtype]);
859 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
861 case opid2('=', '='):
862 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
863 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
864 type_name[exprs[0]->expression.vtype],
865 type_name[exprs[1]->expression.vtype]);
868 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
872 if (ast_istype(exprs[0], ast_entfield))
873 assignop = type_storep_instr[exprs[0]->expression.vtype];
875 assignop = type_store_instr[exprs[0]->expression.vtype];
876 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
880 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
881 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
883 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
884 type_name[exprs[0]->expression.vtype],
885 type_name[exprs[1]->expression.vtype]);
888 if (ast_istype(exprs[0], ast_entfield))
889 assignop = type_storep_instr[exprs[0]->expression.vtype];
891 assignop = type_store_instr[exprs[0]->expression.vtype];
892 switch (exprs[0]->expression.vtype) {
894 out = (ast_expression*)ast_binstore_new(ctx, assignop,
895 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
899 out = (ast_expression*)ast_binstore_new(ctx, assignop,
900 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
904 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
905 type_name[exprs[0]->expression.vtype],
906 type_name[exprs[1]->expression.vtype]);
914 parseerror(parser, "failed to apply operand %s", op->op);
918 DEBUGSHUNTDO(printf("applied %s\n", op->op));
919 sy->out[sy->out_count++] = syexp(ctx, out);
923 static bool parser_close_call(parser_t *parser, shunt *sy)
925 /* was a function call */
933 fid = sy->ops[sy->ops_count].off;
935 /* out[fid] is the function
936 * everything above is parameters...
938 * 1 params = ast_expression
942 if (sy->out_count < 1 || sy->out_count <= fid) {
943 parseerror(parser, "internal error: function call needs function and parameter list...");
947 fun = sy->out[fid].out;
949 call = ast_call_new(sy->ops[sy->ops_count].ctx, fun);
951 parseerror(parser, "out of memory");
955 if (fid+1 == sy->out_count) {
958 } else if (fid+2 == sy->out_count) {
961 params = sy->out[sy->out_count].block;
965 if (!ast_call_params_add(call, sy->out[sy->out_count].out)) {
966 ast_delete(sy->out[sy->out_count].out);
967 parseerror(parser, "out of memory");
971 paramcount = params->exprs_count;
972 MEM_VECTOR_MOVE(params, exprs, call, params);
976 parseerror(parser, "invalid function call");
980 /* overwrite fid, the function, with a call */
981 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
983 if (fun->expression.vtype != TYPE_FUNCTION) {
984 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
988 if (!fun->expression.next) {
989 parseerror(parser, "could not determine function return type");
992 if (fun->expression.params_count != paramcount &&
993 !(fun->expression.variadic &&
994 fun->expression.params_count < paramcount))
997 const char *fewmany = (fun->expression.params_count > paramcount) ? "few" : "many";
999 fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1000 if (opts_standard == COMPILER_GMQCC)
1003 parseerror(parser, "too %s parameters for call to %s: expected %i, got %i\n"
1004 " -> `%s` has been declared here: %s:%i",
1005 fewmany, fval->name, (int)fun->expression.params_count, (int)paramcount,
1006 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1008 parseerror(parser, "too %s parameters for function call: expected %i, got %i\n"
1009 " -> `%s` has been declared here: %s:%i",
1010 fewmany, fval->name, (int)fun->expression.params_count, (int)paramcount,
1011 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1017 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1018 "too %s parameters for call to %s: expected %i, got %i\n"
1019 " -> `%s` has been declared here: %s:%i",
1020 fewmany, fval->name, (int)fun->expression.params_count, (int)paramcount,
1021 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1023 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1024 "too %s parameters for function call: expected %i, got %i\n"
1025 " -> `%s` has been declared here: %s:%i",
1026 fewmany, fval->name, (int)fun->expression.params_count, (int)paramcount,
1027 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1035 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
1037 if (!sy->ops_count) {
1038 parseerror(parser, "unmatched closing paren");
1041 /* this would for bit a + (x) because there are no operators inside (x)
1042 if (sy->ops[sy->ops_count-1].paren == 1) {
1043 parseerror(parser, "empty parenthesis expression");
1047 while (sy->ops_count) {
1048 if (sy->ops[sy->ops_count-1].paren == 'f') {
1049 if (!parser_close_call(parser, sy))
1053 if (sy->ops[sy->ops_count-1].paren == 1) {
1055 return !functions_only;
1057 if (!parser_sy_pop(parser, sy))
1063 static void parser_reclassify_token(parser_t *parser)
1066 for (i = 0; i < operator_count; ++i) {
1067 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1068 parser->tok = TOKEN_OPERATOR;
1074 static ast_expression* parser_expression_leave(parser_t *parser, bool stopatcomma)
1076 ast_expression *expr = NULL;
1078 bool wantop = false;
1079 bool gotmemberof = false;
1081 /* count the parens because an if starts with one, so the
1082 * end of a condition is an unmatched closing paren
1086 MEM_VECTOR_INIT(&sy, out);
1087 MEM_VECTOR_INIT(&sy, ops);
1089 parser->lex->flags.noops = false;
1091 parser_reclassify_token(parser);
1096 gotmemberof = false;
1098 parser->memberof = 0;
1100 if (parser->tok == TOKEN_IDENT)
1102 ast_expression *var;
1104 parseerror(parser, "expected operator or end of statement");
1109 if (opts_standard == COMPILER_GMQCC)
1111 if (parser->memberof == TYPE_ENTITY) {
1112 /* still get vars first since there could be a fieldpointer */
1113 var = parser_find_var(parser, parser_tokval(parser));
1115 var = parser_find_field(parser, parser_tokval(parser));
1117 else if (parser->memberof == TYPE_VECTOR)
1119 parseerror(parser, "TODO: implement effective vector member access");
1122 else if (parser->memberof) {
1123 parseerror(parser, "namespace for member not found");
1127 var = parser_find_var(parser, parser_tokval(parser));
1129 var = parser_find_var(parser, parser_tokval(parser));
1131 var = parser_find_field(parser, parser_tokval(parser));
1134 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1137 if (ast_istype(var, ast_value))
1138 ((ast_value*)var)->uses++;
1139 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), var))) {
1140 parseerror(parser, "out of memory");
1143 DEBUGSHUNTDO(printf("push %s\n", parser_tokval(parser)));
1145 else if (parser->tok == TOKEN_FLOATCONST) {
1148 parseerror(parser, "expected operator or end of statement, got constant");
1152 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1155 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
1156 parseerror(parser, "out of memory");
1159 DEBUGSHUNTDO(printf("push %g\n", parser_token(parser)->constval.f));
1161 else if (parser->tok == TOKEN_INTCONST) {
1164 parseerror(parser, "expected operator or end of statement, got constant");
1168 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1171 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
1172 parseerror(parser, "out of memory");
1175 DEBUGSHUNTDO(printf("push %i\n", parser_token(parser)->constval.i));
1177 else if (parser->tok == TOKEN_STRINGCONST) {
1180 parseerror(parser, "expected operator or end of statement, got constant");
1184 val = parser_const_string(parser, parser_tokval(parser));
1187 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
1188 parseerror(parser, "out of memory");
1191 DEBUGSHUNTDO(printf("push string\n"));
1193 else if (parser->tok == TOKEN_VECTORCONST) {
1196 parseerror(parser, "expected operator or end of statement, got constant");
1200 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1203 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
1204 parseerror(parser, "out of memory");
1207 DEBUGSHUNTDO(printf("push '%g %g %g'\n",
1208 parser_token(parser)->constval.v.x,
1209 parser_token(parser)->constval.v.y,
1210 parser_token(parser)->constval.v.z));
1212 else if (parser->tok == '(') {
1213 parseerror(parser, "internal error: '(' should be classified as operator");
1216 else if (parser->tok == ')') {
1218 DEBUGSHUNTDO(printf("do[op] )\n"));
1222 /* we do expect an operator next */
1223 /* closing an opening paren */
1224 if (!parser_close_paren(parser, &sy, false))
1227 DEBUGSHUNTDO(printf("do[nop] )\n"));
1231 /* allowed for function calls */
1232 if (!parser_close_paren(parser, &sy, true))
1237 else if (parser->tok != TOKEN_OPERATOR) {
1239 parseerror(parser, "expected operator or end of statement");
1246 /* classify the operator */
1247 /* TODO: suffix operators */
1248 const oper_info *op;
1249 const oper_info *olast = NULL;
1251 for (o = 0; o < operator_count; ++o) {
1252 if ((!(operators[o].flags & OP_PREFIX) == wantop) &&
1253 !(operators[o].flags & OP_SUFFIX) && /* remove this */
1254 !strcmp(parser_tokval(parser), operators[o].op))
1259 if (o == operator_count) {
1260 /* no operator found... must be the end of the statement */
1263 /* found an operator */
1266 /* when declaring variables, a comma starts a new variable */
1267 if (op->id == opid1(',') && !parens && stopatcomma) {
1268 /* fixup the token */
1273 if (sy.ops_count && !sy.ops[sy.ops_count-1].paren)
1274 olast = &operators[sy.ops[sy.ops_count-1].etype-1];
1277 (op->prec < olast->prec) ||
1278 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1280 if (!parser_sy_pop(parser, &sy))
1282 if (sy.ops_count && !sy.ops[sy.ops_count-1].paren)
1283 olast = &operators[sy.ops[sy.ops_count-1].etype-1];
1288 if (op->id == opid1('.') && opts_standard == COMPILER_GMQCC) {
1289 /* for gmqcc standard: open up the namespace of the previous type */
1290 ast_expression *prevex = sy.out[sy.out_count-1].out;
1292 parseerror(parser, "unexpected member operator");
1295 if (prevex->expression.vtype == TYPE_ENTITY)
1296 parser->memberof = TYPE_ENTITY;
1297 else if (prevex->expression.vtype == TYPE_VECTOR)
1298 parser->memberof = TYPE_VECTOR;
1300 parseerror(parser, "type error: type has no members");
1306 if (op->id == opid1('(')) {
1308 DEBUGSHUNTDO(printf("push [op] (\n"));
1310 /* we expected an operator, this is the function-call operator */
1311 if (!shunt_ops_add(&sy, syparen(parser_ctx(parser), 'f', sy.out_count-1))) {
1312 parseerror(parser, "out of memory");
1317 if (!shunt_ops_add(&sy, syparen(parser_ctx(parser), 1, 0))) {
1318 parseerror(parser, "out of memory");
1321 DEBUGSHUNTDO(printf("push [nop] (\n"));
1325 DEBUGSHUNTDO(printf("push operator %s\n", op->op));
1326 if (!shunt_ops_add(&sy, syop(parser_ctx(parser), op)))
1331 if (!parser_next(parser)) {
1334 if (parser->tok == ';' || parser->tok == ']') {
1339 while (sy.ops_count) {
1340 if (!parser_sy_pop(parser, &sy))
1344 parser->lex->flags.noops = true;
1345 if (!sy.out_count) {
1346 parseerror(parser, "empty expression");
1349 expr = sy.out[0].out;
1350 MEM_VECTOR_CLEAR(&sy, out);
1351 MEM_VECTOR_CLEAR(&sy, ops);
1352 DEBUGSHUNTDO(printf("shunt done\n"));
1356 parser->lex->flags.noops = true;
1357 MEM_VECTOR_CLEAR(&sy, out);
1358 MEM_VECTOR_CLEAR(&sy, ops);
1362 static ast_expression* parser_expression(parser_t *parser, bool stopatcomma)
1364 ast_expression *e = parser_expression_leave(parser, stopatcomma);
1367 if (!parser_next(parser)) {
1374 static bool parser_parse_if(parser_t *parser, ast_block *block, ast_expression **out)
1377 ast_expression *cond, *ontrue, *onfalse = NULL;
1379 lex_ctx ctx = parser_ctx(parser);
1381 /* skip the 'if' and check for opening paren */
1382 if (!parser_next(parser) || parser->tok != '(') {
1383 parseerror(parser, "expected 'if' condition in parenthesis");
1386 /* parse into the expression */
1387 if (!parser_next(parser)) {
1388 parseerror(parser, "expected 'if' condition after opening paren");
1391 /* parse the condition */
1392 cond = parser_expression_leave(parser, false);
1396 if (parser->tok != ')') {
1397 parseerror(parser, "expected closing paren after 'if' condition");
1401 /* parse into the 'then' branch */
1402 if (!parser_next(parser)) {
1403 parseerror(parser, "expected statement for on-true branch of 'if'");
1407 ontrue = parser_parse_statement_or_block(parser);
1412 /* check for an else */
1413 if (!strcmp(parser_tokval(parser), "else")) {
1414 /* parse into the 'else' branch */
1415 if (!parser_next(parser)) {
1416 parseerror(parser, "expected on-false branch after 'else'");
1421 onfalse = parser_parse_statement_or_block(parser);
1429 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
1430 *out = (ast_expression*)ifthen;
1434 static bool parser_parse_while(parser_t *parser, ast_block *block, ast_expression **out)
1437 ast_expression *cond, *ontrue;
1439 lex_ctx ctx = parser_ctx(parser);
1441 /* skip the 'while' and check for opening paren */
1442 if (!parser_next(parser) || parser->tok != '(') {
1443 parseerror(parser, "expected 'while' condition in parenthesis");
1446 /* parse into the expression */
1447 if (!parser_next(parser)) {
1448 parseerror(parser, "expected 'while' condition after opening paren");
1451 /* parse the condition */
1452 cond = parser_expression_leave(parser, false);
1456 if (parser->tok != ')') {
1457 parseerror(parser, "expected closing paren after 'while' condition");
1461 /* parse into the 'then' branch */
1462 if (!parser_next(parser)) {
1463 parseerror(parser, "expected while-loop body");
1467 ontrue = parser_parse_statement_or_block(parser);
1473 aloop = ast_loop_new(ctx, NULL, cond, NULL, NULL, ontrue);
1474 *out = (ast_expression*)aloop;
1478 static bool parser_parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
1481 ast_expression *cond, *ontrue;
1483 lex_ctx ctx = parser_ctx(parser);
1485 /* skip the 'do' and get the body */
1486 if (!parser_next(parser)) {
1487 parseerror(parser, "expected loop body");
1490 ontrue = parser_parse_statement_or_block(parser);
1494 /* expect the "while" */
1495 if (parser->tok != TOKEN_KEYWORD ||
1496 strcmp(parser_tokval(parser), "while"))
1498 parseerror(parser, "expected 'while' and condition");
1503 /* skip the 'while' and check for opening paren */
1504 if (!parser_next(parser) || parser->tok != '(') {
1505 parseerror(parser, "expected 'while' condition in parenthesis");
1509 /* parse into the expression */
1510 if (!parser_next(parser)) {
1511 parseerror(parser, "expected 'while' condition after opening paren");
1515 /* parse the condition */
1516 cond = parser_expression_leave(parser, false);
1520 if (parser->tok != ')') {
1521 parseerror(parser, "expected closing paren after 'while' condition");
1527 if (!parser_next(parser) || parser->tok != ';') {
1528 parseerror(parser, "expected semicolon after condition");
1534 if (!parser_next(parser)) {
1535 parseerror(parser, "parse error");
1541 aloop = ast_loop_new(ctx, NULL, NULL, cond, NULL, ontrue);
1542 *out = (ast_expression*)aloop;
1546 static bool parser_parse_for(parser_t *parser, ast_block *block, ast_expression **out)
1549 ast_expression *initexpr, *cond, *increment, *ontrue;
1550 size_t oldblocklocal;
1553 lex_ctx ctx = parser_ctx(parser);
1555 oldblocklocal = parser->blocklocal;
1556 parser->blocklocal = parser->locals_count;
1563 /* skip the 'while' and check for opening paren */
1564 if (!parser_next(parser) || parser->tok != '(') {
1565 parseerror(parser, "expected 'for' expressions in parenthesis");
1568 /* parse into the expression */
1569 if (!parser_next(parser)) {
1570 parseerror(parser, "expected 'for' initializer after opening paren");
1574 if (parser->tok == TOKEN_TYPENAME) {
1575 if (opts_standard != COMPILER_GMQCC) {
1576 if (parsewarning(parser, WARN_EXTENSIONS,
1577 "current standard does not allow variable declarations in for-loop initializers"))
1581 parseerror(parser, "TODO: assignment of new variables to be non-const");
1583 if (!parser_variable(parser, block))
1586 else if (parser->tok != ';')
1588 initexpr = parser_expression_leave(parser, false);
1593 /* move on to condition */
1594 if (parser->tok != ';') {
1595 parseerror(parser, "expected semicolon after for-loop initializer");
1598 if (!parser_next(parser)) {
1599 parseerror(parser, "expected for-loop condition");
1603 /* parse the condition */
1604 if (parser->tok != ';') {
1605 cond = parser_expression_leave(parser, false);
1610 /* move on to incrementor */
1611 if (parser->tok != ';') {
1612 parseerror(parser, "expected semicolon after for-loop initializer");
1615 if (!parser_next(parser)) {
1616 parseerror(parser, "expected for-loop condition");
1620 /* parse the incrementor */
1621 if (parser->tok != ')') {
1622 increment = parser_expression_leave(parser, false);
1628 if (parser->tok != ')') {
1629 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
1632 /* parse into the 'then' branch */
1633 if (!parser_next(parser)) {
1634 parseerror(parser, "expected for-loop body");
1637 ontrue = parser_parse_statement_or_block(parser);
1642 aloop = ast_loop_new(ctx, initexpr, cond, NULL, increment, ontrue);
1643 *out = (ast_expression*)aloop;
1645 while (parser->locals_count > parser->blocklocal)
1646 retval = retval && parser_pop_local(parser);
1647 parser->blocklocal = oldblocklocal;
1650 if (initexpr) ast_delete(initexpr);
1651 if (cond) ast_delete(cond);
1652 if (increment) ast_delete(increment);
1653 while (parser->locals_count > parser->blocklocal)
1654 (void)!parser_pop_local(parser);
1655 parser->blocklocal = oldblocklocal;
1659 static bool parser_parse_statement(parser_t *parser, ast_block *block, ast_expression **out)
1661 if (parser->tok == TOKEN_TYPENAME)
1663 /* local variable */
1665 parseerror(parser, "cannot declare a variable from here");
1668 if (opts_standard == COMPILER_QCC) {
1669 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
1672 if (!parser_variable(parser, block))
1677 else if (parser->tok == TOKEN_KEYWORD)
1679 if (!strcmp(parser_tokval(parser), "local"))
1682 parseerror(parser, "cannot declare a local variable here");
1685 if (!parser_next(parser)) {
1686 parseerror(parser, "expected variable declaration");
1689 if (!parser_variable(parser, block))
1694 else if (!strcmp(parser_tokval(parser), "return"))
1696 ast_expression *exp = NULL;
1697 ast_return *ret = NULL;
1698 ast_value *expected = parser->function->vtype;
1700 if (!parser_next(parser)) {
1701 parseerror(parser, "expected return expression");
1705 if (parser->tok != ';') {
1706 exp = parser_expression(parser, false);
1710 if (exp->expression.vtype != expected->expression.next->expression.vtype) {
1711 parseerror(parser, "return with invalid expression");
1714 ret = ast_return_new(exp->expression.node.context, exp);
1720 if (!parser_next(parser))
1721 parseerror(parser, "parse error");
1722 if (expected->expression.next->expression.vtype != TYPE_VOID) {
1723 if (opts_standard != COMPILER_GMQCC)
1724 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
1726 parseerror(parser, "return without value");
1728 ret = ast_return_new(parser_ctx(parser), NULL);
1730 *out = (ast_expression*)ret;
1733 else if (!strcmp(parser_tokval(parser), "if"))
1735 return parser_parse_if(parser, block, out);
1737 else if (!strcmp(parser_tokval(parser), "while"))
1739 return parser_parse_while(parser, block, out);
1741 else if (!strcmp(parser_tokval(parser), "do"))
1743 return parser_parse_dowhile(parser, block, out);
1745 else if (!strcmp(parser_tokval(parser), "for"))
1747 if (opts_standard == COMPILER_QCC) {
1748 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
1751 return parser_parse_for(parser, block, out);
1753 parseerror(parser, "Unexpected keyword");
1756 else if (parser->tok == '{')
1759 inner = parser_parse_block(parser, false);
1762 *out = (ast_expression*)inner;
1767 ast_expression *exp = parser_expression(parser, false);
1775 static bool GMQCC_WARN parser_pop_local(parser_t *parser)
1778 parser->locals_count--;
1780 ve = &parser->locals[parser->locals_count];
1781 if (ast_istype(ve->var, ast_value) && !(((ast_value*)(ve->var))->uses)) {
1782 if (parsewarning(parser, WARN_UNUSED_VARIABLE, "unused variable: `%s`", ve->name))
1785 mem_d(parser->locals[parser->locals_count].name);
1789 static bool parser_parse_block_into(parser_t *parser, ast_block *block, bool warnreturn)
1791 size_t oldblocklocal;
1794 oldblocklocal = parser->blocklocal;
1795 parser->blocklocal = parser->locals_count;
1797 if (!parser_next(parser)) { /* skip the '{' */
1798 parseerror(parser, "expected function body");
1802 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
1804 ast_expression *expr;
1805 if (parser->tok == '}')
1808 if (!parser_parse_statement(parser, block, &expr)) {
1809 parseerror(parser, "parse error");
1815 if (!ast_block_exprs_add(block, expr)) {
1822 if (parser->tok != '}') {
1825 if (warnreturn && parser->function->vtype->expression.next->expression.vtype != TYPE_VOID)
1827 if (!block->exprs_count ||
1828 !ast_istype(block->exprs[block->exprs_count-1], ast_return))
1830 if (parsewarning(parser, WARN_MISSING_RETURN_VALUES, "control reaches end of non-void function")) {
1836 (void)parser_next(parser);
1840 while (parser->locals_count > parser->blocklocal)
1841 retval = retval && parser_pop_local(parser);
1842 parser->blocklocal = oldblocklocal;
1846 static ast_block* parser_parse_block(parser_t *parser, bool warnreturn)
1849 block = ast_block_new(parser_ctx(parser));
1852 if (!parser_parse_block_into(parser, block, warnreturn)) {
1853 ast_block_delete(block);
1859 static ast_expression* parser_parse_statement_or_block(parser_t *parser)
1861 ast_expression *expr = NULL;
1862 if (parser->tok == '{')
1863 return (ast_expression*)parser_parse_block(parser, false);
1864 if (!parser_parse_statement(parser, NULL, &expr))
1869 static bool create_vector_members(parser_t *parser, ast_value *var,
1870 varentry_t *vx, varentry_t *vy, varentry_t *vz)
1872 size_t len = strlen(var->name);
1873 vx->var = (ast_expression*)ast_member_new(ast_ctx(var), (ast_expression*)var, 0);
1875 parseerror(parser, "failed to create vector members (out of memory)");
1879 vy->var = (ast_expression*)ast_member_new(ast_ctx(var), (ast_expression*)var, 1);
1881 ast_delete(vx->var);
1882 parseerror(parser, "failed to create vector members (out of memory)");
1886 vz->var = (ast_expression*)ast_member_new(ast_ctx(var), (ast_expression*)var, 2);
1888 ast_delete(vy->var);
1889 ast_delete(vx->var);
1890 parseerror(parser, "failed to create vector members (out of memory)");
1894 if ( !(vx->name = (char*)mem_a(len+3)) ) {
1895 ast_delete(vz->var);
1896 ast_delete(vy->var);
1897 ast_delete(vx->var);
1898 parseerror(parser, "failed to create vector members (out of memory)");
1901 if ( !(vy->name = (char*)mem_a(len+3)) ) {
1903 ast_delete(vz->var);
1904 ast_delete(vy->var);
1905 ast_delete(vx->var);
1906 parseerror(parser, "failed to create vector members (out of memory)");
1909 if ( !(vz->name = (char*)mem_a(len+3)) ) {
1912 ast_delete(vz->var);
1913 ast_delete(vy->var);
1914 ast_delete(vx->var);
1915 parseerror(parser, "failed to create vector members (out of memory)");
1919 memcpy(vx->name, var->name, len);
1920 memcpy(vy->name, var->name, len);
1921 memcpy(vz->name, var->name, len);
1922 vx->name[len] = vy->name[len] = vz->name[len] = '_';
1923 vx->name[len+1] = 'x';
1924 vy->name[len+1] = 'y';
1925 vz->name[len+1] = 'z';
1926 vx->name[len+2] = vy->name[len+2] = vz->name[len+2] = 0;
1930 static bool parser_variable(parser_t *parser, ast_block *localblock)
1932 bool isfunc = false;
1936 ast_expression *olddecl;
1945 int basetype = parser_token(parser)->constval.t;
1947 if (!parser_next(parser)) {
1948 parseerror(parser, "expected variable definition");
1952 typevar = parser_parse_type(parser, basetype, &isfunc);
1962 ctx = parser_ctx(parser);
1963 var = ast_value_copy(typevar);
1966 ast_delete(typevar);
1967 parseerror(parser, "failed to create variable");
1971 if (parser->tok != TOKEN_IDENT) {
1972 parseerror(parser, "expected variable name");
1973 ast_value_delete(typevar);
1974 ast_value_delete(var);
1979 if (!localblock && (olddecl = parser_find_global(parser, parser_tokval(parser)))) {
1980 ast_value_delete(typevar);
1981 ast_value_delete(var);
1982 parseerror(parser, "global `%s` already declared here: %s:%i",
1983 parser_tokval(parser), ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line);
1988 olddecl = parser_find_local(parser, parser_tokval(parser), parser->blocklocal, &isparam);
1989 if (opts_standard == COMPILER_GMQCC)
1994 ast_value_delete(typevar);
1995 ast_value_delete(var);
1996 parseerror(parser, "local `%s` already declared here: %s:%i",
1997 parser_tokval(parser), ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line);
2002 if( (!isparam && olddecl) || (olddecl = parser_find_local(parser, parser_tokval(parser), 0, &isparam)) )
2004 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
2005 "local `%s` is shadowing a parameter", parser_tokval(parser)))
2007 ast_value_delete(typevar);
2008 ast_value_delete(var);
2009 parseerror(parser, "local `%s` already declared here: %s:%i",
2010 parser_tokval(parser), ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line);
2019 ast_value_delete(var);
2021 parsewarning(parser, WARN_LOCAL_SHADOWS,
2022 "a parameter is shadowing local `%s`", parser_tokval(parser)))
2024 ast_value_delete(typevar);
2025 ast_value_delete(var);
2030 parseerror(parser, "local `%s` already declared here: %s:%i",
2031 parser_tokval(parser), ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line);
2032 ast_value_delete(typevar);
2033 ast_value_delete(var);
2042 if (!ast_value_set_name(var, parser_tokval(parser))) {
2043 parseerror(parser, "failed to set variable name\n");
2044 ast_value_delete(typevar);
2045 ast_value_delete(var);
2050 /* a function was defined */
2052 ast_value *proto = NULL;
2056 olddecl = parser_find_global(parser, parser_tokval(parser));
2058 olddecl = parser_find_local(parser, parser_tokval(parser), parser->blocklocal, &dummy);
2061 /* we had a prototype */
2062 if (!ast_istype(olddecl, ast_value)) {
2063 /* theoretically not possible you think?
2069 parseerror(parser, "cannot declare a function with the same name as a vector's member: %s",
2070 parser_tokval(parser));
2071 ast_value_delete(var);
2075 proto = (ast_value*)olddecl;
2078 /* turn var into a value of TYPE_FUNCTION, with the old var
2081 fval = ast_value_new(ctx, var->name, TYPE_FUNCTION);
2083 ast_value_delete(var);
2084 ast_value_delete(typevar);
2085 if (fval) ast_value_delete(fval);
2089 fval->expression.next = (ast_expression*)var;
2090 MEM_VECTOR_MOVE(&var->expression, params, &fval->expression, params);
2091 fval->expression.variadic = var->expression.variadic;
2093 /* we compare the type late here, but it's easier than
2094 * messing with the parameter-vector etc. earlier
2098 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)fval)) {
2099 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
2101 ast_ctx(proto).file, ast_ctx(proto).line);
2102 ast_value_delete(fval);
2103 ast_value_delete(typevar);
2106 /* copy over the parameter names */
2107 for (param = 0; param < fval->expression.params_count; ++param)
2108 ast_value_set_name(proto->expression.params[param], fval->expression.params[param]->name);
2109 /* copy the new context */
2110 ast_ctx(proto) = ast_ctx(fval);
2112 /* now ditch the rest of the new data */
2113 ast_value_delete(fval);
2122 varent.name = util_strdup(var->name);
2123 varent.var = (ast_expression*)var;
2124 if (var->expression.vtype == TYPE_VECTOR)
2126 varentry_t vx, vy, vz;
2127 if (!create_vector_members(parser, var, &vx, &vy, &vz)) {
2129 ast_value_delete(typevar);
2134 (void)!parser_t_globals_add(parser, varent);
2135 (void)!parser_t_globals_add(parser, vx);
2136 (void)!parser_t_globals_add(parser, vy);
2137 (void)!parser_t_globals_add(parser, vz);
2139 (void)!parser_t_locals_add(parser, varent);
2140 (void)!parser_t_locals_add(parser, vx);
2141 (void)!parser_t_locals_add(parser, vy);
2142 (void)!parser_t_locals_add(parser, vz);
2143 if (!ast_block_locals_add(localblock, var) ||
2144 !ast_block_collect(localblock, vx.var) ||
2145 !ast_block_collect(localblock, vy.var) ||
2146 !ast_block_collect(localblock, vz.var))
2148 (void)!parser_pop_local(parser);
2149 (void)!parser_pop_local(parser);
2150 (void)!parser_pop_local(parser);
2151 (void)!parser_pop_local(parser);
2152 ast_value_delete(var);
2153 ast_value_delete(typevar);
2160 if ( (!localblock && !parser_t_globals_add(parser, varent)) ||
2161 ( localblock && !parser_t_locals_add(parser, varent)) )
2163 ast_value_delete(var);
2164 ast_value_delete(typevar);
2167 if (localblock && !ast_block_locals_add(localblock, var))
2169 (void)!parser_pop_local(parser);
2170 ast_value_delete(var);
2171 ast_value_delete(typevar);
2178 if (!parser_next(parser)) {
2179 ast_value_delete(typevar);
2180 ast_value_delete(var);
2184 if (parser->tok == ';') {
2185 ast_value_delete(typevar);
2186 if (!parser_next(parser))
2191 if (parser->tok == ',') {
2193 if (!parser_next(parser)) {
2194 ast_delete(typevar);
2200 if (localblock && opts_standard == COMPILER_QCC) {
2201 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
2202 "initializing expression turns variable `%s` into a constant in this standard",
2205 ast_value_delete(typevar);
2210 if (parser->tok != '=') {
2211 ast_value_delete(typevar);
2212 parseerror(parser, "expected '=' or ';'");
2216 if (!parser_next(parser)) {
2217 ast_value_delete(typevar);
2221 if (parser->tok == '#') {
2225 parseerror(parser, "cannot declare builtins within functions");
2226 ast_value_delete(typevar);
2230 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
2231 ast_value_delete(typevar);
2234 if (!parser_next(parser)) {
2235 parseerror(parser, "expected builtin number");
2236 ast_value_delete(typevar);
2239 if (parser->tok != TOKEN_INTCONST) {
2240 parseerror(parser, "builtin number must be an integer constant");
2241 ast_value_delete(typevar);
2244 if (parser_token(parser)->constval.i <= 0) {
2245 parseerror(parser, "builtin number must be positive integer greater than zero");
2246 ast_value_delete(typevar);
2250 func = ast_function_new(ast_ctx(var), var->name, var);
2252 parseerror(parser, "failed to allocate function for `%s`", var->name);
2253 ast_value_delete(typevar);
2256 if (!parser_t_functions_add(parser, func)) {
2257 parseerror(parser, "failed to allocate slot for function `%s`", var->name);
2258 ast_function_delete(func);
2259 var->constval.vfunc = NULL;
2260 ast_value_delete(typevar);
2264 func->builtin = -parser_token(parser)->constval.i;
2266 if (!parser_next(parser)) {
2267 ast_value_delete(typevar);
2270 } else if (parser->tok == '{' || parser->tok == '[') {
2277 ast_expression *fld_think, *fld_nextthink, *fld_frame;
2278 ast_expression *gbl_time, *gbl_self;
2279 ast_expression *framenum, *nextthink;
2280 bool has_frame_think;
2282 has_frame_think = false;
2283 old = parser->function;
2285 if (var->expression.variadic) {
2286 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
2287 "variadic function with implementation will not be able to access additional parameters"))
2289 ast_value_delete(typevar);
2295 parseerror(parser, "cannot declare functions within functions");
2296 ast_value_delete(typevar);
2300 if (parser->tok == '[') {
2301 /* got a frame definition: [ framenum, nextthink ]
2302 * this translates to:
2303 * self.frame = framenum;
2304 * self.nextthink = time + 0.1;
2305 * self.think = nextthink;
2309 fld_think = parser_find_field(parser, "think");
2310 fld_nextthink = parser_find_field(parser, "nextthink");
2311 fld_frame = parser_find_field(parser, "frame");
2312 if (!fld_think || !fld_nextthink || !fld_frame) {
2313 parseerror(parser, "cannot use [frame,think] notation without the required fields");
2314 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
2315 ast_value_delete(typevar);
2318 gbl_time = parser_find_global(parser, "time");
2319 gbl_self = parser_find_global(parser, "self");
2320 if (!gbl_time || !gbl_self) {
2321 parseerror(parser, "cannot use [frame,think] notation without the required globals");
2322 parseerror(parser, "please declare the following globals: `time`, `self`");
2323 ast_value_delete(typevar);
2327 if (!parser_next(parser)) {
2328 ast_value_delete(typevar);
2332 framenum = parser_expression_leave(parser, true);
2334 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
2335 ast_value_delete(typevar);
2338 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->isconst) {
2339 ast_unref(framenum);
2340 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
2343 if (parser->tok != ',') {
2344 ast_unref(framenum);
2345 parseerror(parser, "expected comma after frame number in [frame,think] notation");
2346 parseerror(parser, "Got a %i\n", parser->tok);
2347 ast_value_delete(typevar);
2351 if (!parser_next(parser)) {
2352 ast_unref(framenum);
2353 ast_value_delete(typevar);
2357 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
2359 /* qc allows the use of not-yet-declared functions here
2360 * - this automatically creates a prototype */
2362 ast_value *thinkfunc;
2363 ast_expression *functype = fld_think->expression.next;
2365 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
2366 if (!thinkfunc || !ast_type_adopt(thinkfunc, functype)) {
2367 ast_unref(framenum);
2368 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
2369 ast_value_delete(typevar);
2373 if (!parser_next(parser)) {
2374 ast_unref(framenum);
2375 ast_value_delete(typevar);
2379 varent.var = (ast_expression*)thinkfunc;
2380 varent.name = util_strdup(thinkfunc->name);
2381 (void)!parser_t_globals_add(parser, varent);
2382 nextthink = (ast_expression*)thinkfunc;
2385 nextthink = parser_expression_leave(parser, true);
2387 ast_unref(framenum);
2388 parseerror(parser, "expected a think-function in [frame,think] notation");
2389 ast_value_delete(typevar);
2394 if (!ast_istype(nextthink, ast_value)) {
2395 ast_unref(nextthink);
2396 ast_unref(framenum);
2397 parseerror(parser, "think-function in [frame,think] notation must be a constant");
2400 if (parser->tok != ']') {
2401 parseerror(parser, "expected closing `]` for [frame,think] notation");
2402 ast_unref(nextthink);
2403 ast_unref(framenum);
2404 ast_value_delete(typevar);
2408 if (!parser_next(parser)) {
2409 ast_unref(nextthink);
2410 ast_unref(framenum);
2411 ast_value_delete(typevar);
2415 if (parser->tok != '{') {
2416 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
2417 ast_unref(nextthink);
2418 ast_unref(framenum);
2419 ast_value_delete(typevar);
2423 has_frame_think = true;
2426 block = ast_block_new(parser_ctx(parser));
2428 parseerror(parser, "failed to allocate block");
2429 ast_value_delete(typevar);
2433 if (has_frame_think) {
2435 ast_expression *self_frame;
2436 ast_expression *self_nextthink;
2437 ast_expression *self_think;
2438 ast_expression *time_plus_1;
2439 ast_store *store_frame;
2440 ast_store *store_nextthink;
2441 ast_store *store_think;
2443 ctx = parser_ctx(parser);
2444 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
2445 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
2446 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
2448 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
2449 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
2451 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
2452 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
2453 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
2455 if (!ast_block_exprs_add(block, (ast_expression*)store_frame) ||
2456 !ast_block_exprs_add(block, (ast_expression*)store_nextthink) ||
2457 !ast_block_exprs_add(block, (ast_expression*)store_think) )
2459 parseerror(parser, "failed to generate code for [frame,think]");
2460 ast_block_delete(block);
2461 ast_value_delete(typevar);
2466 for (parami = 0; parami < var->expression.params_count; ++parami) {
2467 ast_value *param = var->expression.params[parami];
2468 varentry_t vx, vy, vz;
2470 if (param->expression.vtype != TYPE_VECTOR &&
2471 (param->expression.vtype != TYPE_FIELD ||
2472 param->expression.next->expression.vtype != TYPE_VECTOR))
2477 if (!create_vector_members(parser, param, &vx, &vy, &vz)) {
2478 ast_block_delete(block);
2479 ast_value_delete(typevar);
2483 (void)!parser_t_locals_add(parser, vx);
2484 (void)!parser_t_locals_add(parser, vy);
2485 (void)!parser_t_locals_add(parser, vz);
2486 if (!ast_block_collect(block, vx.var) ||
2487 !ast_block_collect(block, vy.var) ||
2488 !ast_block_collect(block, vz.var) )
2490 (void)!parser_pop_local(parser);
2491 (void)!parser_pop_local(parser);
2492 (void)!parser_pop_local(parser);
2493 ast_block_delete(block);
2494 ast_value_delete(typevar);
2499 func = ast_function_new(ast_ctx(var), var->name, var);
2501 parseerror(parser, "failed to allocate function for `%s`", var->name);
2502 ast_block_delete(block);
2503 parser->function = old;
2504 ast_value_delete(typevar);
2507 if (!parser_t_functions_add(parser, func)) {
2508 parseerror(parser, "failed to allocate slot for function `%s`", var->name);
2509 ast_function_delete(func);
2510 var->constval.vfunc = NULL;
2511 ast_value_delete(typevar);
2512 ast_block_delete(block);
2513 parser->function = old;
2517 parser->function = func;
2518 if (!parser_parse_block_into(parser, block, true)) {
2519 ast_block_delete(block);
2520 parser->function = old;
2521 ast_value_delete(typevar);
2524 parser->function = old;
2525 while (parser->locals_count)
2526 retval = retval && parser_pop_local(parser);
2529 ast_value_delete(typevar);
2533 if (!ast_function_blocks_add(func, block)) {
2534 ast_block_delete(block);
2535 ast_value_delete(typevar);
2539 if (parser->tok == ';') {
2540 ast_value_delete(typevar);
2541 return parser_next(parser) || parser->tok == TOKEN_EOF;
2543 else if (opts_standard == COMPILER_QCC)
2544 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
2545 ast_value_delete(typevar);
2548 ast_expression *cexp;
2551 cexp = parser_expression_leave(parser, true);
2553 ast_value_delete(typevar);
2557 cval = (ast_value*)cexp;
2558 if (!ast_istype(cval, ast_value) || !cval->isconst)
2559 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
2562 var->isconst = true;
2563 if (cval->expression.vtype == TYPE_STRING)
2564 var->constval.vstring = parser_strdup(cval->constval.vstring);
2566 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
2571 if (parser->tok == ',') {
2576 if (parser->tok != ';') {
2577 parseerror(parser, "missing semicolon");
2578 ast_value_delete(typevar);
2582 (void)parser_next(parser);
2584 ast_value_delete(typevar);
2589 static bool parser_do(parser_t *parser)
2591 if (parser->tok == TOKEN_TYPENAME)
2593 return parser_variable(parser, NULL);
2595 else if (parser->tok == TOKEN_KEYWORD)
2597 /* handle 'var' and 'const' */
2600 else if (parser->tok == '.')
2605 ast_expression *oldex;
2606 bool isfunc = false;
2608 lex_ctx ctx = parser_ctx(parser);
2611 /* entity-member declaration */
2612 if (!parser_next(parser) || parser->tok != TOKEN_TYPENAME) {
2613 parseerror(parser, "expected member variable definition");
2617 /* remember the base/return type */
2618 basetype = parser_token(parser)->constval.t;
2620 /* parse into the declaration */
2621 if (!parser_next(parser)) {
2622 parseerror(parser, "expected field definition");
2626 /* parse the field type fully */
2627 typevar = var = parser_parse_type(parser, basetype, &isfunc);
2632 var = ast_value_copy(typevar);
2633 /* now the field name */
2634 if (parser->tok != TOKEN_IDENT) {
2635 parseerror(parser, "expected field name");
2640 /* check for an existing field
2641 * in original qc we also have to check for an existing
2642 * global named like the field
2644 if (opts_standard == COMPILER_QCC) {
2645 if (parser_find_global(parser, parser_tokval(parser))) {
2646 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
2654 fval = ast_value_new(ctx, var->name, TYPE_FUNCTION);
2656 ast_value_delete(var);
2659 fval->expression.next = (ast_expression*)var;
2660 MEM_VECTOR_MOVE(&var->expression, params, &fval->expression, params);
2661 fval->expression.variadic = var->expression.variadic;
2665 /* turn it into a field */
2666 fld = ast_value_new(ctx, parser_tokval(parser), TYPE_FIELD);
2667 fld->expression.next = (ast_expression*)var;
2669 if ( (oldex = parser_find_field(parser, parser_tokval(parser)))) {
2670 if (ast_istype(oldex, ast_member)) {
2671 parseerror(parser, "cannot declare a field with the same name as a vector component, component %s has been declared here: %s:%i",
2672 parser_tokval(parser), ast_ctx(oldex).file, (int)ast_ctx(oldex).line);
2676 if (!ast_istype(oldex, ast_value)) {
2677 /* not possible / sanity check */
2678 parseerror(parser, "internal error: %s is not an ast_value", parser_tokval(parser));
2683 if (!ast_compare_type(oldex, (ast_expression*)fld)) {
2684 parseerror(parser, "field %s has previously been declared with a different type here: %s:%i",
2685 parser_tokval(parser), ast_ctx(oldex).file, (int)ast_ctx(oldex).line);
2689 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` has already been declared here: %s:%i",
2690 parser_tokval(parser), ast_ctx(oldex).file, (int)ast_ctx(oldex).line))
2701 varent.var = (ast_expression*)fld;
2702 varent.name = util_strdup(fld->name);
2703 (void)!parser_t_fields_add(parser, varent);
2705 if (var->expression.vtype == TYPE_VECTOR)
2707 /* create _x, _y and _z fields as well */
2708 varentry_t vx, vy, vz;
2709 if (!create_vector_members(parser, fld, &vx, &vy, &vz)) {
2713 (void)!parser_t_fields_add(parser, vx);
2714 (void)!parser_t_fields_add(parser, vy);
2715 (void)!parser_t_fields_add(parser, vz);
2719 if (!parser_next(parser)) {
2720 parseerror(parser, "expected semicolon or another field name");
2723 if (parser->tok == ';')
2725 if (parser->tok != ',' || !parser_next(parser)) {
2726 parseerror(parser, "expected semicolon or another field name");
2730 ast_delete(typevar);
2732 /* skip the semicolon */
2733 if (!parser_next(parser))
2734 return parser->tok == TOKEN_EOF;
2738 else if (parser->tok == '$')
2740 if (!parser_next(parser)) {
2741 parseerror(parser, "parse error");
2747 parseerror(parser, "unexpected token: %s", parser->lex->tok->value);
2753 static parser_t *parser;
2757 parser = (parser_t*)mem_a(sizeof(parser_t));
2761 memset(parser, 0, sizeof(*parser));
2765 bool parser_compile(const char *filename)
2767 parser->lex = lex_open(filename);
2769 printf("failed to open file \"%s\"\n", filename);
2773 /* initial lexer/parser state */
2774 parser->lex->flags.noops = true;
2776 if (parser_next(parser))
2778 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
2780 if (!parser_do(parser)) {
2781 if (parser->tok == TOKEN_EOF)
2782 parseerror(parser, "unexpected eof");
2783 else if (!parser->errors)
2784 parseerror(parser, "parse error");
2785 lex_close(parser->lex);
2791 parseerror(parser, "parse error");
2792 lex_close(parser->lex);
2797 lex_close(parser->lex);
2800 return !parser->errors;
2803 void parser_cleanup()
2806 for (i = 0; i < parser->functions_count; ++i) {
2807 ast_delete(parser->functions[i]);
2809 for (i = 0; i < parser->imm_vector_count; ++i) {
2810 ast_delete(parser->imm_vector[i]);
2812 for (i = 0; i < parser->imm_string_count; ++i) {
2813 ast_delete(parser->imm_string[i]);
2815 for (i = 0; i < parser->imm_float_count; ++i) {
2816 ast_delete(parser->imm_float[i]);
2818 for (i = 0; i < parser->fields_count; ++i) {
2819 ast_delete(parser->fields[i].var);
2820 mem_d(parser->fields[i].name);
2822 for (i = 0; i < parser->globals_count; ++i) {
2823 ast_delete(parser->globals[i].var);
2824 mem_d(parser->globals[i].name);
2826 MEM_VECTOR_CLEAR(parser, functions);
2827 MEM_VECTOR_CLEAR(parser, imm_vector);
2828 MEM_VECTOR_CLEAR(parser, imm_string);
2829 MEM_VECTOR_CLEAR(parser, imm_float);
2830 MEM_VECTOR_CLEAR(parser, globals);
2831 MEM_VECTOR_CLEAR(parser, fields);
2832 MEM_VECTOR_CLEAR(parser, locals);
2837 bool parser_finish(const char *output)
2843 if (!parser->errors)
2845 ir = ir_builder_new("gmqcc_out");
2847 printf("failed to allocate builder\n");
2851 for (i = 0; i < parser->fields_count; ++i) {
2854 if (!ast_istype(parser->fields[i].var, ast_value))
2856 field = (ast_value*)parser->fields[i].var;
2857 isconst = field->isconst;
2858 field->isconst = false;
2859 if (!ast_global_codegen((ast_value*)field, ir)) {
2860 printf("failed to generate field %s\n", field->name);
2861 ir_builder_delete(ir);
2866 ast_expression *subtype;
2867 field->isconst = true;
2868 subtype = field->expression.next;
2869 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
2870 if (subtype->expression.vtype == TYPE_FIELD)
2871 ifld->fieldtype = subtype->expression.next->expression.vtype;
2872 else if (subtype->expression.vtype == TYPE_FUNCTION)
2873 ifld->outtype = subtype->expression.next->expression.vtype;
2874 (void)!ir_value_set_field(field->ir_v, ifld);
2877 for (i = 0; i < parser->globals_count; ++i) {
2879 if (!ast_istype(parser->globals[i].var, ast_value))
2881 asvalue = (ast_value*)(parser->globals[i].var);
2882 if (!asvalue->uses && !asvalue->isconst && asvalue->expression.vtype != TYPE_FUNCTION) {
2883 retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
2884 "unused global: `%s`", asvalue->name);
2886 if (!ast_global_codegen(asvalue, ir)) {
2887 printf("failed to generate global %s\n", parser->globals[i].name);
2888 ir_builder_delete(ir);
2892 for (i = 0; i < parser->imm_float_count; ++i) {
2893 if (!ast_global_codegen(parser->imm_float[i], ir)) {
2894 printf("failed to generate global %s\n", parser->imm_float[i]->name);
2895 ir_builder_delete(ir);
2899 for (i = 0; i < parser->imm_string_count; ++i) {
2900 if (!ast_global_codegen(parser->imm_string[i], ir)) {
2901 printf("failed to generate global %s\n", parser->imm_string[i]->name);
2902 ir_builder_delete(ir);
2906 for (i = 0; i < parser->imm_vector_count; ++i) {
2907 if (!ast_global_codegen(parser->imm_vector[i], ir)) {
2908 printf("failed to generate global %s\n", parser->imm_vector[i]->name);
2909 ir_builder_delete(ir);
2913 for (i = 0; i < parser->functions_count; ++i) {
2914 if (!ast_function_codegen(parser->functions[i], ir)) {
2915 printf("failed to generate function %s\n", parser->functions[i]->name);
2916 ir_builder_delete(ir);
2919 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
2920 printf("failed to finalize function %s\n", parser->functions[i]->name);
2921 ir_builder_delete(ir);
2928 ir_builder_dump(ir, printf);
2930 if (!ir_builder_generate(ir, output)) {
2931 printf("*** failed to generate output file\n");
2932 ir_builder_delete(ir);
2937 ir_builder_delete(ir);
2941 printf("*** there were compile errors\n");