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;
29 ast_function *function;
30 MEM_VECTOR_MAKE(varentry_t, locals);
35 /* TYPE_FIELD -> parser_find_fields is used instead of find_var
36 * TODO: TYPE_VECTOR -> x, y and z are accepted in the gmqcc standard
37 * anything else: type error
42 MEM_VEC_FUNCTIONS(parser_t, varentry_t, globals)
43 MEM_VEC_FUNCTIONS(parser_t, varentry_t, fields)
44 MEM_VEC_FUNCTIONS(parser_t, ast_value*, imm_float)
45 MEM_VEC_FUNCTIONS(parser_t, ast_value*, imm_string)
46 MEM_VEC_FUNCTIONS(parser_t, ast_value*, imm_vector)
47 MEM_VEC_FUNCTIONS(parser_t, varentry_t, locals)
48 MEM_VEC_FUNCTIONS(parser_t, ast_function*, functions)
50 static bool GMQCC_WARN parser_pop_local(parser_t *parser);
51 static bool parse_variable(parser_t *parser, ast_block *localblock);
52 static ast_block* parse_block(parser_t *parser, bool warnreturn);
53 static bool parse_block_into(parser_t *parser, ast_block *block, bool warnreturn);
54 static ast_expression* parse_statement_or_block(parser_t *parser);
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 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 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 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 < parser->imm_float_count; ++i) {
170 if (parser->imm_float[i]->constval.vfloat == d)
171 return parser->imm_float[i];
173 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_FLOAT);
175 out->constval.vfloat = d;
176 if (!parser_t_imm_float_add(parser, out)) {
177 ast_value_delete(out);
183 static ast_value* parser_const_float_0(parser_t *parser)
185 if (!parser->imm_float_zero)
186 parser->imm_float_zero = parser_const_float(parser, 0);
187 return parser->imm_float_zero;
190 static char *parser_strdup(const char *str)
193 /* actually dup empty strings */
194 char *out = mem_a(1);
198 return util_strdup(str);
201 static ast_value* parser_const_string(parser_t *parser, const char *str)
205 for (i = 0; i < parser->imm_string_count; ++i) {
206 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
207 return parser->imm_string[i];
209 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
211 out->constval.vstring = parser_strdup(str);
212 if (!parser_t_imm_string_add(parser, out)) {
213 ast_value_delete(out);
219 static ast_value* parser_const_vector(parser_t *parser, vector v)
223 for (i = 0; i < parser->imm_vector_count; ++i) {
224 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
225 return parser->imm_vector[i];
227 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
229 out->constval.vvec = v;
230 if (!parser_t_imm_vector_add(parser, out)) {
231 ast_value_delete(out);
237 static ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
243 return parser_const_vector(parser, v);
246 static ast_value* parser_const_vector_0(parser_t *parser)
248 if (!parser->imm_vector_zero)
249 parser->imm_vector_zero = parser_const_vector_f(parser, 0, 0, 0);
250 return parser->imm_vector_zero;
253 static ast_expression* parser_find_field(parser_t *parser, const char *name)
256 for (i = 0; i < parser->fields_count; ++i) {
257 if (!strcmp(parser->fields[i].name, name))
258 return parser->fields[i].var;
263 static ast_expression* parser_find_global(parser_t *parser, const char *name)
266 for (i = 0; i < parser->globals_count; ++i) {
267 if (!strcmp(parser->globals[i].name, name))
268 return parser->globals[i].var;
273 static ast_expression* parser_find_param(parser_t *parser, const char *name)
277 if (!parser->function)
279 fun = parser->function->vtype;
280 for (i = 0; i < fun->expression.params_count; ++i) {
281 if (!strcmp(fun->expression.params[i]->name, name))
282 return (ast_expression*)(fun->expression.params[i]);
287 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
291 for (i = parser->locals_count; i > upto;) {
293 if (!strcmp(parser->locals[i].name, name))
294 return parser->locals[i].var;
297 return parser_find_param(parser, name);
300 static ast_expression* parser_find_var(parser_t *parser, const char *name)
304 v = parser_find_local(parser, name, 0, &dummy);
305 if (!v) v = parser_find_global(parser, name);
310 MEM_VECTOR_MAKE(ast_value*, p);
312 MEM_VEC_FUNCTIONS(paramlist_t, ast_value*, p)
314 static ast_value *parse_type(parser_t *parser, int basetype, bool *isfunc)
318 lex_ctx ctx = parser_ctx(parser);
319 int vtype = basetype;
322 bool variadic = false;
324 MEM_VECTOR_INIT(¶ms, p);
328 if (parser->tok == '(') {
333 bool isfield = false;
334 bool isfuncparam = false;
336 if (!parser_next(parser))
339 if (parser->tok == ')')
342 if (parser->tok == '.') {
344 if (!parser_next(parser)) {
345 parseerror(parser, "expected field parameter type");
350 if (parser->tok == TOKEN_DOTS) {
353 if (!parser_next(parser))
355 if (parser->tok != ')') {
356 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
359 if (opts_standard == COMPILER_QCC) {
360 if (parsewarning(parser, WARN_EXTENSIONS, "variadic functions are not available in this standard"))
366 temptype = parser_token(parser)->constval.t;
367 if (!parser_next(parser))
370 param = parse_type(parser, temptype, &isfuncparam);
375 if (parser->tok == TOKEN_IDENT) {
376 /* named parameter */
377 if (!ast_value_set_name(param, parser_tokval(parser)))
379 if (!parser_next(parser))
383 /* This comes before the isfield part! */
385 ast_value *fval = ast_value_new(ast_ctx(param), param->name, TYPE_FUNCTION);
390 fval->expression.next = (ast_expression*)param;
391 MEM_VECTOR_MOVE(¶m->expression, params, &fval->expression, params);
392 fval->expression.variadic = param->expression.variadic;
397 fld = ast_value_new(ctx, param->name, TYPE_FIELD);
398 fld->expression.next = (ast_expression*)param;
402 if (!paramlist_t_p_add(¶ms, param)) {
403 parseerror(parser, "Out of memory while parsing typename");
407 if (parser->tok == ',')
409 if (parser->tok == ')')
411 parseerror(parser, "Unexpected token");
414 if (!parser_next(parser))
418 var = ast_value_new(ctx, "<unnamed>", vtype);
421 var->expression.variadic = variadic;
422 MEM_VECTOR_MOVE(¶ms, p, &var->expression, params);
425 for (i = 0; i < params.p_count; ++i)
426 ast_value_delete(params.p[i]);
427 MEM_VECTOR_CLEAR(¶ms, p);
433 size_t etype; /* 0 = expression, others are operators */
437 ast_block *block; /* for commas and function calls */
442 MEM_VECTOR_MAKE(sy_elem, out);
443 MEM_VECTOR_MAKE(sy_elem, ops);
445 MEM_VEC_FUNCTIONS(shunt, sy_elem, out)
446 MEM_VEC_FUNCTIONS(shunt, sy_elem, ops)
448 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
458 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
461 e.out = (ast_expression*)v;
468 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
470 e.etype = 1 + (op - operators);
478 static sy_elem syparen(lex_ctx ctx, int p, size_t off) {
490 # define DEBUGSHUNTDO(x) x
492 # define DEBUGSHUNTDO(x)
495 static bool parser_sy_pop(parser_t *parser, shunt *sy)
499 ast_expression *out = NULL;
500 ast_expression *exprs[3];
501 ast_block *blocks[3];
502 ast_value *asvalue[3];
504 qcint generated_op = 0;
506 if (!sy->ops_count) {
507 parseerror(parser, "internal error: missing operator");
511 if (sy->ops[sy->ops_count-1].paren) {
512 parseerror(parser, "unmatched parenthesis");
516 op = &operators[sy->ops[sy->ops_count-1].etype - 1];
517 ctx = sy->ops[sy->ops_count-1].ctx;
519 DEBUGSHUNTDO(printf("apply %s\n", op->op));
521 if (sy->out_count < op->operands) {
522 parseerror(parser, "internal error: not enough operands: %i (operator %s (%i))", sy->out_count,
523 op->op, (int)op->id);
529 sy->out_count -= op->operands;
530 for (i = 0; i < op->operands; ++i) {
531 exprs[i] = sy->out[sy->out_count+i].out;
532 blocks[i] = sy->out[sy->out_count+i].block;
533 asvalue[i] = (ast_value*)exprs[i];
536 if (blocks[0] && !blocks[0]->exprs_count && op->id != opid1(',')) {
537 parseerror(parser, "internal error: operator cannot be applied on empty blocks");
541 #define NotSameType(T) \
542 (exprs[0]->expression.vtype != exprs[1]->expression.vtype || \
543 exprs[0]->expression.vtype != T)
544 #define CanConstFold1(A) \
545 (ast_istype((A), ast_value) && ((ast_value*)(A))->isconst)
546 #define CanConstFold(A, B) \
547 (CanConstFold1(A) && CanConstFold1(B))
548 #define ConstV(i) (asvalue[(i)]->constval.vvec)
549 #define ConstF(i) (asvalue[(i)]->constval.vfloat)
550 #define ConstS(i) (asvalue[(i)]->constval.vstring)
554 parseerror(parser, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
558 if (exprs[0]->expression.vtype == TYPE_ENTITY) {
559 if (exprs[1]->expression.vtype != TYPE_FIELD) {
560 parseerror(parser, "type error: right hand of member-operand should be an entity-field");
563 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
565 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
566 parseerror(parser, "internal error: vector access is not supposed to be handled at this point");
570 parseerror(parser, "type error: member-of operator on something that is not an entity or vector");
577 if (!ast_block_exprs_add(blocks[0], exprs[1]))
580 blocks[0] = ast_block_new(ctx);
581 if (!ast_block_exprs_add(blocks[0], exprs[0]) ||
582 !ast_block_exprs_add(blocks[0], exprs[1]))
587 if (!ast_block_set_type(blocks[0], exprs[1]))
590 sy->out[sy->out_count++] = syblock(ctx, blocks[0]);
594 switch (exprs[0]->expression.vtype) {
596 if (CanConstFold1(exprs[0]))
597 out = (ast_expression*)parser_const_float(parser, -ConstF(0));
599 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
600 (ast_expression*)parser_const_float_0(parser),
604 if (CanConstFold1(exprs[0]))
605 out = (ast_expression*)parser_const_vector_f(parser,
606 -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
608 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
609 (ast_expression*)parser_const_vector_0(parser),
613 parseerror(parser, "invalid types used in expression: cannot negate type %s",
614 type_name[exprs[0]->expression.vtype]);
620 switch (exprs[0]->expression.vtype) {
622 if (CanConstFold1(exprs[0]))
623 out = (ast_expression*)parser_const_float(parser, !ConstF(0));
625 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
628 if (CanConstFold1(exprs[0]))
629 out = (ast_expression*)parser_const_float(parser,
630 (!ConstV(0).x && !ConstV(0).y && !ConstV(0).z));
632 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
635 if (CanConstFold1(exprs[0]))
636 out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
638 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
640 /* we don't constant-fold NOT for these types */
642 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
645 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
648 parseerror(parser, "invalid types used in expression: cannot logically negate type %s",
649 type_name[exprs[0]->expression.vtype]);
655 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
656 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
658 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
659 type_name[exprs[0]->expression.vtype],
660 type_name[exprs[1]->expression.vtype]);
663 switch (exprs[0]->expression.vtype) {
665 if (CanConstFold(exprs[0], exprs[1]))
667 out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
670 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
673 if (CanConstFold(exprs[0], exprs[1]))
674 out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
676 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
679 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
680 type_name[exprs[0]->expression.vtype],
681 type_name[exprs[1]->expression.vtype]);
686 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
687 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
689 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
690 type_name[exprs[1]->expression.vtype],
691 type_name[exprs[0]->expression.vtype]);
694 switch (exprs[0]->expression.vtype) {
696 if (CanConstFold(exprs[0], exprs[1]))
697 out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
699 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
702 if (CanConstFold(exprs[0], exprs[1]))
703 out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
705 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
708 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
709 type_name[exprs[1]->expression.vtype],
710 type_name[exprs[0]->expression.vtype]);
715 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
716 exprs[0]->expression.vtype != TYPE_VECTOR &&
717 exprs[0]->expression.vtype != TYPE_FLOAT &&
718 exprs[1]->expression.vtype != TYPE_VECTOR &&
719 exprs[1]->expression.vtype != TYPE_FLOAT)
721 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
722 type_name[exprs[1]->expression.vtype],
723 type_name[exprs[0]->expression.vtype]);
726 switch (exprs[0]->expression.vtype) {
728 if (exprs[1]->expression.vtype == TYPE_VECTOR)
730 if (CanConstFold(exprs[0], exprs[1]))
731 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
733 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
737 if (CanConstFold(exprs[0], exprs[1]))
738 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
740 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
744 if (exprs[1]->expression.vtype == TYPE_FLOAT)
746 if (CanConstFold(exprs[0], exprs[1]))
747 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
749 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
753 if (CanConstFold(exprs[0], exprs[1]))
754 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
756 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
760 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
761 type_name[exprs[1]->expression.vtype],
762 type_name[exprs[0]->expression.vtype]);
767 if (NotSameType(TYPE_FLOAT)) {
768 parseerror(parser, "invalid types used in expression: cannot divide types %s and %s",
769 type_name[exprs[0]->expression.vtype],
770 type_name[exprs[1]->expression.vtype]);
773 if (CanConstFold(exprs[0], exprs[1]))
774 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
776 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
780 parseerror(parser, "qc does not have a modulo operator");
784 if (NotSameType(TYPE_FLOAT)) {
785 parseerror(parser, "invalid types used in expression: cannot perform bit operations between types %s and %s",
786 type_name[exprs[0]->expression.vtype],
787 type_name[exprs[1]->expression.vtype]);
790 if (CanConstFold(exprs[0], exprs[1]))
791 out = (ast_expression*)parser_const_float(parser,
792 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
793 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
795 out = (ast_expression*)ast_binary_new(ctx,
796 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
800 parseerror(parser, "TODO: bitxor");
805 case opid3('<','<','='):
806 case opid3('>','>','='):
807 parseerror(parser, "TODO: shifts");
811 generated_op += 1; /* INSTR_OR */
813 generated_op += INSTR_AND;
814 if (NotSameType(TYPE_FLOAT)) {
815 parseerror(parser, "invalid types used in expression: cannot perform logical operations between types %s and %s",
816 type_name[exprs[0]->expression.vtype],
817 type_name[exprs[1]->expression.vtype]);
818 parseerror(parser, "TODO: logical ops for arbitrary types using INSTR_NOT");
819 parseerror(parser, "TODO: optional early out");
822 if (opts_standard == COMPILER_GMQCC)
823 printf("TODO: early out logic\n");
824 if (CanConstFold(exprs[0], exprs[1]))
825 out = (ast_expression*)parser_const_float(parser,
826 (generated_op == INSTR_OR ? (ConstF(0) || ConstF(1)) : (ConstF(0) && ConstF(1))));
828 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
832 generated_op += 1; /* INSTR_GT */
834 generated_op += 1; /* INSTR_LT */
835 case opid2('>', '='):
836 generated_op += 1; /* INSTR_GE */
837 case opid2('<', '='):
838 generated_op += INSTR_LE;
839 if (NotSameType(TYPE_FLOAT)) {
840 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
841 type_name[exprs[0]->expression.vtype],
842 type_name[exprs[1]->expression.vtype]);
845 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
847 case opid2('!', '='):
848 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
849 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
850 type_name[exprs[0]->expression.vtype],
851 type_name[exprs[1]->expression.vtype]);
854 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
856 case opid2('=', '='):
857 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
858 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
859 type_name[exprs[0]->expression.vtype],
860 type_name[exprs[1]->expression.vtype]);
863 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
867 if (ast_istype(exprs[0], ast_entfield)) {
868 ast_expression *field = ((ast_entfield*)exprs[0])->field;
869 assignop = type_storep_instr[exprs[0]->expression.vtype];
870 if (!ast_compare_type(field->expression.next, exprs[1])) {
873 ast_type_to_string(field->expression.next, ty1, sizeof(ty1));
874 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
875 if (opts_standard == COMPILER_QCC &&
876 field->expression.next->expression.vtype == TYPE_FUNCTION &&
877 exprs[1]->expression.vtype == TYPE_FUNCTION)
879 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
880 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
886 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
891 assignop = type_store_instr[exprs[0]->expression.vtype];
892 if (!ast_compare_type(exprs[0], exprs[1])) {
895 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
896 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
897 if (opts_standard == COMPILER_QCC &&
898 exprs[0]->expression.vtype == TYPE_FUNCTION &&
899 exprs[1]->expression.vtype == TYPE_FUNCTION)
901 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
902 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
908 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
911 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
915 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
916 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
918 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
919 type_name[exprs[0]->expression.vtype],
920 type_name[exprs[1]->expression.vtype]);
923 if (ast_istype(exprs[0], ast_entfield))
924 assignop = type_storep_instr[exprs[0]->expression.vtype];
926 assignop = type_store_instr[exprs[0]->expression.vtype];
927 switch (exprs[0]->expression.vtype) {
929 out = (ast_expression*)ast_binstore_new(ctx, assignop,
930 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
934 out = (ast_expression*)ast_binstore_new(ctx, assignop,
935 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
939 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
940 type_name[exprs[0]->expression.vtype],
941 type_name[exprs[1]->expression.vtype]);
949 parseerror(parser, "failed to apply operand %s", op->op);
953 DEBUGSHUNTDO(printf("applied %s\n", op->op));
954 sy->out[sy->out_count++] = syexp(ctx, out);
958 static bool parser_close_call(parser_t *parser, shunt *sy)
960 /* was a function call */
968 fid = sy->ops[sy->ops_count].off;
970 /* out[fid] is the function
971 * everything above is parameters...
973 * 1 params = ast_expression
977 if (sy->out_count < 1 || sy->out_count <= fid) {
978 parseerror(parser, "internal error: function call needs function and parameter list...");
982 fun = sy->out[fid].out;
984 call = ast_call_new(sy->ops[sy->ops_count].ctx, fun);
986 parseerror(parser, "out of memory");
990 if (fid+1 == sy->out_count) {
993 } else if (fid+2 == sy->out_count) {
996 params = sy->out[sy->out_count].block;
1000 if (!ast_call_params_add(call, sy->out[sy->out_count].out)) {
1001 ast_delete(sy->out[sy->out_count].out);
1002 parseerror(parser, "out of memory");
1006 paramcount = params->exprs_count;
1007 MEM_VECTOR_MOVE(params, exprs, call, params);
1010 if (!ast_call_check_types(call))
1013 parseerror(parser, "invalid function call");
1017 /* overwrite fid, the function, with a call */
1018 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1020 if (fun->expression.vtype != TYPE_FUNCTION) {
1021 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
1025 if (!fun->expression.next) {
1026 parseerror(parser, "could not determine function return type");
1029 if (fun->expression.params_count != paramcount &&
1030 !(fun->expression.variadic &&
1031 fun->expression.params_count < paramcount))
1034 const char *fewmany = (fun->expression.params_count > paramcount) ? "few" : "many";
1036 fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1037 if (opts_standard == COMPILER_GMQCC)
1040 parseerror(parser, "too %s parameters for call to %s: expected %i, got %i\n"
1041 " -> `%s` has been declared here: %s:%i",
1042 fewmany, fval->name, (int)fun->expression.params_count, (int)paramcount,
1043 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1045 parseerror(parser, "too %s parameters for function call: expected %i, got %i\n"
1046 " -> `%s` has been declared here: %s:%i",
1047 fewmany, fval->name, (int)fun->expression.params_count, (int)paramcount,
1048 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1054 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1055 "too %s parameters for call to %s: expected %i, got %i\n"
1056 " -> `%s` has been declared here: %s:%i",
1057 fewmany, fval->name, (int)fun->expression.params_count, (int)paramcount,
1058 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1060 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1061 "too %s parameters for function call: expected %i, got %i\n"
1062 " -> `%s` has been declared here: %s:%i",
1063 fewmany, fval->name, (int)fun->expression.params_count, (int)paramcount,
1064 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1072 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
1074 if (!sy->ops_count) {
1075 parseerror(parser, "unmatched closing paren");
1078 /* this would for bit a + (x) because there are no operators inside (x)
1079 if (sy->ops[sy->ops_count-1].paren == 1) {
1080 parseerror(parser, "empty parenthesis expression");
1084 while (sy->ops_count) {
1085 if (sy->ops[sy->ops_count-1].paren == 'f') {
1086 if (!parser_close_call(parser, sy))
1090 if (sy->ops[sy->ops_count-1].paren == 1) {
1092 return !functions_only;
1094 if (!parser_sy_pop(parser, sy))
1100 static void parser_reclassify_token(parser_t *parser)
1103 for (i = 0; i < operator_count; ++i) {
1104 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1105 parser->tok = TOKEN_OPERATOR;
1111 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma)
1113 ast_expression *expr = NULL;
1115 bool wantop = false;
1116 bool gotmemberof = false;
1118 /* count the parens because an if starts with one, so the
1119 * end of a condition is an unmatched closing paren
1123 MEM_VECTOR_INIT(&sy, out);
1124 MEM_VECTOR_INIT(&sy, ops);
1126 parser->lex->flags.noops = false;
1128 parser_reclassify_token(parser);
1133 gotmemberof = false;
1135 parser->memberof = 0;
1137 if (parser->tok == TOKEN_IDENT)
1139 ast_expression *var;
1141 parseerror(parser, "expected operator or end of statement");
1146 if (opts_standard == COMPILER_GMQCC)
1148 if (parser->memberof == TYPE_ENTITY) {
1149 /* still get vars first since there could be a fieldpointer */
1150 var = parser_find_var(parser, parser_tokval(parser));
1152 var = parser_find_field(parser, parser_tokval(parser));
1154 else if (parser->memberof == TYPE_VECTOR)
1156 parseerror(parser, "TODO: implement effective vector member access");
1159 else if (parser->memberof) {
1160 parseerror(parser, "namespace for member not found");
1164 var = parser_find_var(parser, parser_tokval(parser));
1166 var = parser_find_var(parser, parser_tokval(parser));
1168 var = parser_find_field(parser, parser_tokval(parser));
1171 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1174 if (ast_istype(var, ast_value))
1175 ((ast_value*)var)->uses++;
1176 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), var))) {
1177 parseerror(parser, "out of memory");
1180 DEBUGSHUNTDO(printf("push %s\n", parser_tokval(parser)));
1182 else if (parser->tok == TOKEN_FLOATCONST) {
1185 parseerror(parser, "expected operator or end of statement, got constant");
1189 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1192 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
1193 parseerror(parser, "out of memory");
1196 DEBUGSHUNTDO(printf("push %g\n", parser_token(parser)->constval.f));
1198 else if (parser->tok == TOKEN_INTCONST) {
1201 parseerror(parser, "expected operator or end of statement, got constant");
1205 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1208 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
1209 parseerror(parser, "out of memory");
1212 DEBUGSHUNTDO(printf("push %i\n", parser_token(parser)->constval.i));
1214 else if (parser->tok == TOKEN_STRINGCONST) {
1217 parseerror(parser, "expected operator or end of statement, got constant");
1221 val = parser_const_string(parser, parser_tokval(parser));
1224 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
1225 parseerror(parser, "out of memory");
1228 DEBUGSHUNTDO(printf("push string\n"));
1230 else if (parser->tok == TOKEN_VECTORCONST) {
1233 parseerror(parser, "expected operator or end of statement, got constant");
1237 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1240 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
1241 parseerror(parser, "out of memory");
1244 DEBUGSHUNTDO(printf("push '%g %g %g'\n",
1245 parser_token(parser)->constval.v.x,
1246 parser_token(parser)->constval.v.y,
1247 parser_token(parser)->constval.v.z));
1249 else if (parser->tok == '(') {
1250 parseerror(parser, "internal error: '(' should be classified as operator");
1253 else if (parser->tok == ')') {
1255 DEBUGSHUNTDO(printf("do[op] )\n"));
1259 /* we do expect an operator next */
1260 /* closing an opening paren */
1261 if (!parser_close_paren(parser, &sy, false))
1264 DEBUGSHUNTDO(printf("do[nop] )\n"));
1268 /* allowed for function calls */
1269 if (!parser_close_paren(parser, &sy, true))
1274 else if (parser->tok != TOKEN_OPERATOR) {
1276 parseerror(parser, "expected operator or end of statement");
1283 /* classify the operator */
1284 /* TODO: suffix operators */
1285 const oper_info *op;
1286 const oper_info *olast = NULL;
1288 for (o = 0; o < operator_count; ++o) {
1289 if ((!(operators[o].flags & OP_PREFIX) == wantop) &&
1290 !(operators[o].flags & OP_SUFFIX) && /* remove this */
1291 !strcmp(parser_tokval(parser), operators[o].op))
1296 if (o == operator_count) {
1297 /* no operator found... must be the end of the statement */
1300 /* found an operator */
1303 /* when declaring variables, a comma starts a new variable */
1304 if (op->id == opid1(',') && !parens && stopatcomma) {
1305 /* fixup the token */
1310 if (sy.ops_count && !sy.ops[sy.ops_count-1].paren)
1311 olast = &operators[sy.ops[sy.ops_count-1].etype-1];
1314 (op->prec < olast->prec) ||
1315 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1317 if (!parser_sy_pop(parser, &sy))
1319 if (sy.ops_count && !sy.ops[sy.ops_count-1].paren)
1320 olast = &operators[sy.ops[sy.ops_count-1].etype-1];
1325 if (op->id == opid1('.') && opts_standard == COMPILER_GMQCC) {
1326 /* for gmqcc standard: open up the namespace of the previous type */
1327 ast_expression *prevex = sy.out[sy.out_count-1].out;
1329 parseerror(parser, "unexpected member operator");
1332 if (prevex->expression.vtype == TYPE_ENTITY)
1333 parser->memberof = TYPE_ENTITY;
1334 else if (prevex->expression.vtype == TYPE_VECTOR)
1335 parser->memberof = TYPE_VECTOR;
1337 parseerror(parser, "type error: type has no members");
1343 if (op->id == opid1('(')) {
1345 DEBUGSHUNTDO(printf("push [op] (\n"));
1347 /* we expected an operator, this is the function-call operator */
1348 if (!shunt_ops_add(&sy, syparen(parser_ctx(parser), 'f', sy.out_count-1))) {
1349 parseerror(parser, "out of memory");
1354 if (!shunt_ops_add(&sy, syparen(parser_ctx(parser), 1, 0))) {
1355 parseerror(parser, "out of memory");
1358 DEBUGSHUNTDO(printf("push [nop] (\n"));
1362 DEBUGSHUNTDO(printf("push operator %s\n", op->op));
1363 if (!shunt_ops_add(&sy, syop(parser_ctx(parser), op)))
1368 if (!parser_next(parser)) {
1371 if (parser->tok == ';' || parser->tok == ']') {
1376 while (sy.ops_count) {
1377 if (!parser_sy_pop(parser, &sy))
1381 parser->lex->flags.noops = true;
1382 if (!sy.out_count) {
1383 parseerror(parser, "empty expression");
1386 expr = sy.out[0].out;
1387 MEM_VECTOR_CLEAR(&sy, out);
1388 MEM_VECTOR_CLEAR(&sy, ops);
1389 DEBUGSHUNTDO(printf("shunt done\n"));
1393 parser->lex->flags.noops = true;
1394 MEM_VECTOR_CLEAR(&sy, out);
1395 MEM_VECTOR_CLEAR(&sy, ops);
1399 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma)
1401 ast_expression *e = parse_expression_leave(parser, stopatcomma);
1404 if (!parser_next(parser)) {
1411 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
1414 ast_expression *cond, *ontrue, *onfalse = NULL;
1416 lex_ctx ctx = parser_ctx(parser);
1418 /* skip the 'if' and check for opening paren */
1419 if (!parser_next(parser) || parser->tok != '(') {
1420 parseerror(parser, "expected 'if' condition in parenthesis");
1423 /* parse into the expression */
1424 if (!parser_next(parser)) {
1425 parseerror(parser, "expected 'if' condition after opening paren");
1428 /* parse the condition */
1429 cond = parse_expression_leave(parser, false);
1433 if (parser->tok != ')') {
1434 parseerror(parser, "expected closing paren after 'if' condition");
1438 /* parse into the 'then' branch */
1439 if (!parser_next(parser)) {
1440 parseerror(parser, "expected statement for on-true branch of 'if'");
1444 ontrue = parse_statement_or_block(parser);
1449 /* check for an else */
1450 if (!strcmp(parser_tokval(parser), "else")) {
1451 /* parse into the 'else' branch */
1452 if (!parser_next(parser)) {
1453 parseerror(parser, "expected on-false branch after 'else'");
1458 onfalse = parse_statement_or_block(parser);
1466 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
1467 *out = (ast_expression*)ifthen;
1471 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
1474 ast_expression *cond, *ontrue;
1476 lex_ctx ctx = parser_ctx(parser);
1478 /* skip the 'while' and check for opening paren */
1479 if (!parser_next(parser) || parser->tok != '(') {
1480 parseerror(parser, "expected 'while' condition in parenthesis");
1483 /* parse into the expression */
1484 if (!parser_next(parser)) {
1485 parseerror(parser, "expected 'while' condition after opening paren");
1488 /* parse the condition */
1489 cond = parse_expression_leave(parser, false);
1493 if (parser->tok != ')') {
1494 parseerror(parser, "expected closing paren after 'while' condition");
1498 /* parse into the 'then' branch */
1499 if (!parser_next(parser)) {
1500 parseerror(parser, "expected while-loop body");
1504 ontrue = parse_statement_or_block(parser);
1510 aloop = ast_loop_new(ctx, NULL, cond, NULL, NULL, ontrue);
1511 *out = (ast_expression*)aloop;
1515 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
1518 ast_expression *cond, *ontrue;
1520 lex_ctx ctx = parser_ctx(parser);
1522 /* skip the 'do' and get the body */
1523 if (!parser_next(parser)) {
1524 parseerror(parser, "expected loop body");
1527 ontrue = parse_statement_or_block(parser);
1531 /* expect the "while" */
1532 if (parser->tok != TOKEN_KEYWORD ||
1533 strcmp(parser_tokval(parser), "while"))
1535 parseerror(parser, "expected 'while' and condition");
1540 /* skip the 'while' and check for opening paren */
1541 if (!parser_next(parser) || parser->tok != '(') {
1542 parseerror(parser, "expected 'while' condition in parenthesis");
1546 /* parse into the expression */
1547 if (!parser_next(parser)) {
1548 parseerror(parser, "expected 'while' condition after opening paren");
1552 /* parse the condition */
1553 cond = parse_expression_leave(parser, false);
1557 if (parser->tok != ')') {
1558 parseerror(parser, "expected closing paren after 'while' condition");
1564 if (!parser_next(parser) || parser->tok != ';') {
1565 parseerror(parser, "expected semicolon after condition");
1571 if (!parser_next(parser)) {
1572 parseerror(parser, "parse error");
1578 aloop = ast_loop_new(ctx, NULL, NULL, cond, NULL, ontrue);
1579 *out = (ast_expression*)aloop;
1583 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
1586 ast_expression *initexpr, *cond, *increment, *ontrue;
1587 size_t oldblocklocal;
1590 lex_ctx ctx = parser_ctx(parser);
1592 oldblocklocal = parser->blocklocal;
1593 parser->blocklocal = parser->locals_count;
1600 /* skip the 'while' and check for opening paren */
1601 if (!parser_next(parser) || parser->tok != '(') {
1602 parseerror(parser, "expected 'for' expressions in parenthesis");
1605 /* parse into the expression */
1606 if (!parser_next(parser)) {
1607 parseerror(parser, "expected 'for' initializer after opening paren");
1611 if (parser->tok == TOKEN_TYPENAME) {
1612 if (opts_standard != COMPILER_GMQCC) {
1613 if (parsewarning(parser, WARN_EXTENSIONS,
1614 "current standard does not allow variable declarations in for-loop initializers"))
1618 parseerror(parser, "TODO: assignment of new variables to be non-const");
1620 if (!parse_variable(parser, block))
1623 else if (parser->tok != ';')
1625 initexpr = parse_expression_leave(parser, false);
1630 /* move on to condition */
1631 if (parser->tok != ';') {
1632 parseerror(parser, "expected semicolon after for-loop initializer");
1635 if (!parser_next(parser)) {
1636 parseerror(parser, "expected for-loop condition");
1640 /* parse the condition */
1641 if (parser->tok != ';') {
1642 cond = parse_expression_leave(parser, false);
1647 /* move on to incrementor */
1648 if (parser->tok != ';') {
1649 parseerror(parser, "expected semicolon after for-loop initializer");
1652 if (!parser_next(parser)) {
1653 parseerror(parser, "expected for-loop condition");
1657 /* parse the incrementor */
1658 if (parser->tok != ')') {
1659 increment = parse_expression_leave(parser, false);
1662 if (!ast_istype(increment, ast_store) &&
1663 !ast_istype(increment, ast_call) &&
1664 !ast_istype(increment, ast_binstore))
1666 if (genwarning(ast_ctx(increment), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
1672 if (parser->tok != ')') {
1673 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
1676 /* parse into the 'then' branch */
1677 if (!parser_next(parser)) {
1678 parseerror(parser, "expected for-loop body");
1681 ontrue = parse_statement_or_block(parser);
1686 aloop = ast_loop_new(ctx, initexpr, cond, NULL, increment, ontrue);
1687 *out = (ast_expression*)aloop;
1689 while (parser->locals_count > parser->blocklocal)
1690 retval = retval && parser_pop_local(parser);
1691 parser->blocklocal = oldblocklocal;
1694 if (initexpr) ast_delete(initexpr);
1695 if (cond) ast_delete(cond);
1696 if (increment) ast_delete(increment);
1697 while (parser->locals_count > parser->blocklocal)
1698 (void)!parser_pop_local(parser);
1699 parser->blocklocal = oldblocklocal;
1703 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out)
1705 if (parser->tok == TOKEN_TYPENAME)
1707 /* local variable */
1709 parseerror(parser, "cannot declare a variable from here");
1712 if (opts_standard == COMPILER_QCC) {
1713 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
1716 if (!parse_variable(parser, block))
1721 else if (parser->tok == TOKEN_KEYWORD)
1723 if (!strcmp(parser_tokval(parser), "local"))
1726 parseerror(parser, "cannot declare a local variable here");
1729 if (!parser_next(parser)) {
1730 parseerror(parser, "expected variable declaration");
1733 if (!parse_variable(parser, block))
1738 else if (!strcmp(parser_tokval(parser), "return"))
1740 ast_expression *exp = NULL;
1741 ast_return *ret = NULL;
1742 ast_value *expected = parser->function->vtype;
1744 if (!parser_next(parser)) {
1745 parseerror(parser, "expected return expression");
1749 if (parser->tok != ';') {
1750 exp = parse_expression(parser, false);
1754 if (exp->expression.vtype != expected->expression.next->expression.vtype) {
1755 parseerror(parser, "return with invalid expression");
1758 ret = ast_return_new(exp->expression.node.context, exp);
1764 if (!parser_next(parser))
1765 parseerror(parser, "parse error");
1766 if (expected->expression.next->expression.vtype != TYPE_VOID) {
1767 if (opts_standard != COMPILER_GMQCC)
1768 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
1770 parseerror(parser, "return without value");
1772 ret = ast_return_new(parser_ctx(parser), NULL);
1774 *out = (ast_expression*)ret;
1777 else if (!strcmp(parser_tokval(parser), "if"))
1779 return parse_if(parser, block, out);
1781 else if (!strcmp(parser_tokval(parser), "while"))
1783 return parse_while(parser, block, out);
1785 else if (!strcmp(parser_tokval(parser), "do"))
1787 return parse_dowhile(parser, block, out);
1789 else if (!strcmp(parser_tokval(parser), "for"))
1791 if (opts_standard == COMPILER_QCC) {
1792 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
1795 return parse_for(parser, block, out);
1797 parseerror(parser, "Unexpected keyword");
1800 else if (parser->tok == '{')
1803 inner = parse_block(parser, false);
1806 *out = (ast_expression*)inner;
1811 ast_expression *exp = parse_expression(parser, false);
1815 if (!ast_istype(exp, ast_store) &&
1816 !ast_istype(exp, ast_call) &&
1817 !ast_istype(exp, ast_binstore))
1819 if (genwarning(ast_ctx(exp), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
1826 static bool GMQCC_WARN parser_pop_local(parser_t *parser)
1829 parser->locals_count--;
1831 ve = &parser->locals[parser->locals_count];
1832 if (ast_istype(ve->var, ast_value) && !(((ast_value*)(ve->var))->uses)) {
1833 if (parsewarning(parser, WARN_UNUSED_VARIABLE, "unused variable: `%s`", ve->name))
1836 mem_d(parser->locals[parser->locals_count].name);
1840 static bool parse_block_into(parser_t *parser, ast_block *block, bool warnreturn)
1842 size_t oldblocklocal;
1845 oldblocklocal = parser->blocklocal;
1846 parser->blocklocal = parser->locals_count;
1848 if (!parser_next(parser)) { /* skip the '{' */
1849 parseerror(parser, "expected function body");
1853 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
1855 ast_expression *expr;
1856 if (parser->tok == '}')
1859 if (!parse_statement(parser, block, &expr)) {
1860 /* parseerror(parser, "parse error"); */
1866 if (!ast_block_exprs_add(block, expr)) {
1873 if (parser->tok != '}') {
1876 if (warnreturn && parser->function->vtype->expression.next->expression.vtype != TYPE_VOID)
1878 if (!block->exprs_count ||
1879 !ast_istype(block->exprs[block->exprs_count-1], ast_return))
1881 if (parsewarning(parser, WARN_MISSING_RETURN_VALUES, "control reaches end of non-void function")) {
1887 (void)parser_next(parser);
1891 while (parser->locals_count > parser->blocklocal)
1892 retval = retval && parser_pop_local(parser);
1893 parser->blocklocal = oldblocklocal;
1897 static ast_block* parse_block(parser_t *parser, bool warnreturn)
1900 block = ast_block_new(parser_ctx(parser));
1903 if (!parse_block_into(parser, block, warnreturn)) {
1904 ast_block_delete(block);
1910 static ast_expression* parse_statement_or_block(parser_t *parser)
1912 ast_expression *expr = NULL;
1913 if (parser->tok == '{')
1914 return (ast_expression*)parse_block(parser, false);
1915 if (!parse_statement(parser, NULL, &expr))
1921 static bool create_vector_members(parser_t *parser, ast_value *var, varentry_t *ve)
1924 size_t len = strlen(var->name);
1926 for (i = 0; i < 3; ++i) {
1927 ve[i].var = (ast_expression*)ast_member_new(ast_ctx(var), (ast_expression*)var, i);
1931 ve[i].name = (char*)mem_a(len+3);
1933 ast_delete(ve[i].var);
1937 memcpy(ve[i].name, var->name, len);
1938 ve[i].name[len] = '_';
1939 ve[i].name[len+1] = 'x'+i;
1940 ve[i].name[len+2] = 0;
1949 ast_delete(ve[i].var);
1956 static bool parse_function_body(parser_t *parser, ast_value *var)
1958 ast_block *block = NULL;
1963 ast_expression *framenum = NULL;
1964 ast_expression *nextthink = NULL;
1965 /* None of the following have to be deleted */
1966 ast_expression *fld_think, *fld_nextthink, *fld_frame;
1967 ast_expression *gbl_time, *gbl_self;
1968 bool has_frame_think;
1972 has_frame_think = false;
1973 old = parser->function;
1975 if (var->expression.variadic) {
1976 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
1977 "variadic function with implementation will not be able to access additional parameters"))
1983 if (parser->tok == '[') {
1984 /* got a frame definition: [ framenum, nextthink ]
1985 * this translates to:
1986 * self.frame = framenum;
1987 * self.nextthink = time + 0.1;
1988 * self.think = nextthink;
1992 fld_think = parser_find_field(parser, "think");
1993 fld_nextthink = parser_find_field(parser, "nextthink");
1994 fld_frame = parser_find_field(parser, "frame");
1995 if (!fld_think || !fld_nextthink || !fld_frame) {
1996 parseerror(parser, "cannot use [frame,think] notation without the required fields");
1997 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
2000 gbl_time = parser_find_global(parser, "time");
2001 gbl_self = parser_find_global(parser, "self");
2002 if (!gbl_time || !gbl_self) {
2003 parseerror(parser, "cannot use [frame,think] notation without the required globals");
2004 parseerror(parser, "please declare the following globals: `time`, `self`");
2008 if (!parser_next(parser))
2011 framenum = parse_expression_leave(parser, true);
2013 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
2016 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->isconst) {
2017 ast_unref(framenum);
2018 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
2022 if (parser->tok != ',') {
2023 ast_unref(framenum);
2024 parseerror(parser, "expected comma after frame number in [frame,think] notation");
2025 parseerror(parser, "Got a %i\n", parser->tok);
2029 if (!parser_next(parser)) {
2030 ast_unref(framenum);
2034 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
2036 /* qc allows the use of not-yet-declared functions here
2037 * - this automatically creates a prototype */
2039 ast_value *thinkfunc;
2040 ast_expression *functype = fld_think->expression.next;
2042 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
2043 if (!thinkfunc || !ast_type_adopt(thinkfunc, functype)) {
2044 ast_unref(framenum);
2045 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
2049 if (!parser_next(parser)) {
2050 ast_unref(framenum);
2051 ast_delete(thinkfunc);
2055 varent.var = (ast_expression*)thinkfunc;
2056 varent.name = util_strdup(thinkfunc->name);
2057 if (!parser_t_globals_add(parser, varent)) {
2058 ast_unref(framenum);
2059 ast_delete(thinkfunc);
2062 nextthink = (ast_expression*)thinkfunc;
2065 nextthink = parse_expression_leave(parser, true);
2067 ast_unref(framenum);
2068 parseerror(parser, "expected a think-function in [frame,think] notation");
2073 if (!ast_istype(nextthink, ast_value)) {
2074 parseerror(parser, "think-function in [frame,think] notation must be a constant");
2078 if (retval && parser->tok != ']') {
2079 parseerror(parser, "expected closing `]` for [frame,think] notation");
2083 if (retval && !parser_next(parser)) {
2087 if (retval && parser->tok != '{') {
2088 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
2093 ast_unref(nextthink);
2094 ast_unref(framenum);
2098 has_frame_think = true;
2101 block = ast_block_new(parser_ctx(parser));
2103 parseerror(parser, "failed to allocate block");
2104 if (has_frame_think) {
2105 ast_unref(nextthink);
2106 ast_unref(framenum);
2111 if (has_frame_think) {
2113 ast_expression *self_frame;
2114 ast_expression *self_nextthink;
2115 ast_expression *self_think;
2116 ast_expression *time_plus_1;
2117 ast_store *store_frame;
2118 ast_store *store_nextthink;
2119 ast_store *store_think;
2121 ctx = parser_ctx(parser);
2122 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
2123 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
2124 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
2126 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
2127 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
2129 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
2130 if (self_frame) ast_delete(self_frame);
2131 if (self_nextthink) ast_delete(self_nextthink);
2132 if (self_think) ast_delete(self_think);
2133 if (time_plus_1) ast_delete(time_plus_1);
2139 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
2140 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
2141 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
2144 ast_delete(self_frame);
2147 if (!store_nextthink) {
2148 ast_delete(self_nextthink);
2152 ast_delete(self_think);
2156 if (store_frame) ast_delete(store_frame);
2157 if (store_nextthink) ast_delete(store_nextthink);
2158 if (store_think) ast_delete(store_think);
2161 if (retval && !ast_block_exprs_add(block, (ast_expression*)store_frame)) {
2162 ast_delete(store_frame);
2163 ast_delete(store_nextthink);
2164 ast_delete(store_think);
2168 if (retval && !ast_block_exprs_add(block, (ast_expression*)store_nextthink)) {
2169 ast_delete(store_nextthink);
2170 ast_delete(store_think);
2174 if (retval && !ast_block_exprs_add(block, (ast_expression*)store_think) )
2176 ast_delete(store_think);
2182 parseerror(parser, "failed to generate code for [frame,think]");
2183 ast_unref(nextthink);
2184 ast_unref(framenum);
2190 for (parami = 0; parami < var->expression.params_count; ++parami) {
2193 ast_value *param = var->expression.params[parami];
2195 if (param->expression.vtype != TYPE_VECTOR &&
2196 (param->expression.vtype != TYPE_FIELD ||
2197 param->expression.next->expression.vtype != TYPE_VECTOR))
2202 if (!create_vector_members(parser, param, ve)) {
2203 ast_block_delete(block);
2207 for (e = 0; e < 3; ++e) {
2208 if (!parser_t_locals_add(parser, ve[e]))
2210 if (!ast_block_collect(block, ve[e].var)) {
2211 parser->locals_count--;
2214 ve[e].var = NULL; /* collected */
2217 parser->locals -= e;
2222 ast_block_delete(block);
2227 func = ast_function_new(ast_ctx(var), var->name, var);
2229 parseerror(parser, "failed to allocate function for `%s`", var->name);
2230 ast_block_delete(block);
2233 if (!parser_t_functions_add(parser, func)) {
2234 parseerror(parser, "failed to allocate slot for function `%s`", var->name);
2235 ast_block_delete(block);
2239 parser->function = func;
2240 if (!parse_block_into(parser, block, true)) {
2241 ast_block_delete(block);
2245 if (!ast_function_blocks_add(func, block)) {
2246 ast_block_delete(block);
2250 parser->function = old;
2251 while (parser->locals_count)
2252 retval = retval && parser_pop_local(parser);
2254 if (parser->tok == ';')
2255 return parser_next(parser);
2256 else if (opts_standard == COMPILER_QCC)
2257 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
2261 parser->functions_count--;
2263 ast_function_delete(func);
2264 var->constval.vfunc = NULL;
2267 while (parser->locals_count) {
2268 parser->locals_count--;
2269 mem_d(parser->locals[parser->locals_count].name);
2271 parser->function = old;
2275 static bool parse_variable(parser_t *parser, ast_block *localblock)
2277 bool isfunc = false;
2280 ast_value *var = NULL;
2281 bool cleanvar = false;
2286 ast_expression *olddecl;
2297 int basetype = parser_token(parser)->constval.t;
2299 if (!parser_next(parser)) {
2300 parseerror(parser, "expected variable definition");
2304 typevar = parse_type(parser, basetype, &isfunc);
2315 ve[0].name = ve[1].name = ve[2].name = NULL;
2316 ve[0].var = ve[1].var = ve[2].var = NULL;
2318 ctx = parser_ctx(parser);
2319 var = ast_value_copy(typevar);
2323 parseerror(parser, "failed to create variable");
2328 if (parser->tok != TOKEN_IDENT) {
2329 parseerror(parser, "expected variable name");
2335 if (!strcmp(parser_tokval(parser), "end_sys_globals"))
2336 parser->crc_globals = parser->globals_count;
2337 else if (!strcmp(parser_tokval(parser), "end_sys_fields"))
2338 parser->crc_fields = parser->fields_count;
2342 if (!localblock && (olddecl = parser_find_global(parser, parser_tokval(parser)))) {
2343 parseerror(parser, "global `%s` already declared here: %s:%i",
2344 parser_tokval(parser), ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line);
2350 olddecl = parser_find_local(parser, parser_tokval(parser), parser->blocklocal, &isparam);
2351 if (opts_standard == COMPILER_GMQCC)
2356 parseerror(parser, "local `%s` already declared here: %s:%i",
2357 parser_tokval(parser), ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line);
2363 if( (!isparam && olddecl) ||
2364 (olddecl = parser_find_local(parser, parser_tokval(parser), 0, &isparam))
2367 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
2368 "local `%s` is shadowing a parameter", parser_tokval(parser)))
2370 parseerror(parser, "local `%s` already declared here: %s:%i",
2371 parser_tokval(parser), ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line);
2381 ast_value_delete(var);
2384 parsewarning(parser, WARN_LOCAL_SHADOWS,
2385 "a parameter is shadowing local `%s`", parser_tokval(parser)))
2392 parseerror(parser, "local `%s` already declared here: %s:%i",
2393 parser_tokval(parser), ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line);
2403 if (!ast_value_set_name(var, parser_tokval(parser))) {
2404 parseerror(parser, "failed to set variable name\n");
2410 /* a function was defined */
2412 ast_value *proto = NULL;
2416 olddecl = parser_find_global(parser, parser_tokval(parser));
2418 olddecl = parser_find_local(parser, parser_tokval(parser), parser->blocklocal, &dummy);
2421 /* we had a prototype */
2422 if (!ast_istype(olddecl, ast_value)) {
2426 parseerror(parser, "cannot declare a function with the same name as a vector's member: %s",
2427 parser_tokval(parser));
2432 proto = (ast_value*)olddecl;
2435 /* turn var into a value of TYPE_FUNCTION, with the old var
2438 fval = ast_value_new(ctx, var->name, TYPE_FUNCTION);
2444 fval->expression.next = (ast_expression*)var;
2445 MEM_VECTOR_MOVE(&var->expression, params, &fval->expression, params);
2446 fval->expression.variadic = var->expression.variadic;
2449 /* we compare the type late here, but it's easier than
2450 * messing with the parameter-vector etc. earlier
2454 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)fval)) {
2455 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
2457 ast_ctx(proto).file, ast_ctx(proto).line);
2458 ast_value_delete(fval);
2462 /* copy over the parameter names */
2463 for (param = 0; param < fval->expression.params_count; ++param)
2464 ast_value_set_name(proto->expression.params[param], fval->expression.params[param]->name);
2465 /* copy the new context */
2466 ast_ctx(proto) = ast_ctx(fval);
2468 /* now ditch the rest of the new data */
2469 ast_value_delete(fval);
2478 varent.name = util_strdup(var->name);
2479 varent.var = (ast_expression*)var;
2482 if (!(retval = parser_t_globals_add(parser, varent)))
2485 if (!(retval = parser_t_locals_add(parser, varent)))
2487 if (!(retval = ast_block_locals_add(localblock, var))) {
2488 parser->locals_count--;
2493 if (var->expression.vtype == TYPE_VECTOR)
2496 if (!create_vector_members(parser, var, ve)) {
2502 for (e = 0; e < 3; ++e) {
2503 if (!(retval = parser_t_globals_add(parser, ve[e])))
2507 parser->globals_count -= e+1;
2511 for (e = 0; e < 3; ++e) {
2512 if (!(retval = parser_t_locals_add(parser, ve[e])))
2514 if (!(retval = ast_block_collect(localblock, ve[e].var)))
2516 ve[e].var = NULL; /* from here it's being collected in the block */
2519 parser->locals_count -= e+1;
2520 localblock->locals_count--;
2524 ve[0].name = ve[1].name = ve[2].name = NULL;
2525 ve[0].var = ve[1].var = ve[2].var = NULL;
2532 if (!(retval = parser_next(parser)))
2535 if (parser->tok == ';') {
2536 ast_value_delete(typevar);
2537 return parser_next(parser);
2540 if (parser->tok == ',') {
2542 if (!(retval = parser_next(parser)))
2547 /* NOTE: only 'typevar' needs to be deleted from here on, so 'cleanup' won't be used
2548 * to avoid having too many gotos
2550 if (localblock && opts_standard == COMPILER_QCC) {
2551 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
2552 "initializing expression turns variable `%s` into a constant in this standard",
2555 ast_value_delete(typevar);
2560 if (parser->tok != '=') {
2561 if (opts_standard == COMPILER_QCC)
2562 parseerror(parser, "missing semicolon");
2564 parseerror(parser, "missing semicolon or initializer");
2565 ast_value_delete(typevar);
2569 if (!parser_next(parser)) {
2570 ast_value_delete(typevar);
2574 if (parser->tok == '#') {
2578 parseerror(parser, "cannot declare builtins within functions");
2579 ast_value_delete(typevar);
2583 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
2584 ast_value_delete(typevar);
2587 if (!parser_next(parser)) {
2588 parseerror(parser, "expected builtin number");
2589 ast_value_delete(typevar);
2592 if (parser->tok != TOKEN_INTCONST) {
2593 parseerror(parser, "builtin number must be an integer constant");
2594 ast_value_delete(typevar);
2597 if (parser_token(parser)->constval.i <= 0) {
2598 parseerror(parser, "builtin number must be positive integer greater than zero");
2599 ast_value_delete(typevar);
2603 func = ast_function_new(ast_ctx(var), var->name, var);
2605 parseerror(parser, "failed to allocate function for `%s`", var->name);
2606 ast_value_delete(typevar);
2609 if (!parser_t_functions_add(parser, func)) {
2610 parseerror(parser, "failed to allocate slot for function `%s`", var->name);
2611 ast_function_delete(func);
2612 var->constval.vfunc = NULL;
2613 ast_value_delete(typevar);
2617 func->builtin = -parser_token(parser)->constval.i;
2619 if (!parser_next(parser)) {
2620 ast_value_delete(typevar);
2624 else if (parser->tok == '{' || parser->tok == '[')
2626 ast_value_delete(typevar);
2628 parseerror(parser, "cannot declare functions within functions");
2632 if (!parse_function_body(parser, var)) {
2637 ast_expression *cexp;
2640 cexp = parse_expression_leave(parser, true);
2642 ast_value_delete(typevar);
2646 cval = (ast_value*)cexp;
2647 if (!ast_istype(cval, ast_value) || !cval->isconst)
2648 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
2651 var->isconst = true;
2652 if (cval->expression.vtype == TYPE_STRING)
2653 var->constval.vstring = parser_strdup(cval->constval.vstring);
2655 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
2660 if (parser->tok == ',') {
2665 if (parser->tok != ';') {
2666 parseerror(parser, "missing semicolon");
2667 ast_value_delete(typevar);
2671 (void)parser_next(parser);
2673 ast_value_delete(typevar);
2678 ast_delete(typevar);
2679 if (var && cleanvar) ast_delete(var);
2680 if (varent.name) mem_d(varent.name);
2681 if (ve[0].name) mem_d(ve[0].name);
2682 if (ve[1].name) mem_d(ve[1].name);
2683 if (ve[2].name) mem_d(ve[2].name);
2684 if (ve[0].var) mem_d(ve[0].var);
2685 if (ve[1].var) mem_d(ve[1].var);
2686 if (ve[2].var) mem_d(ve[2].var);
2691 static bool parser_global_statement(parser_t *parser)
2693 if (parser->tok == TOKEN_TYPENAME)
2695 return parse_variable(parser, NULL);
2697 else if (parser->tok == TOKEN_KEYWORD)
2699 /* handle 'var' and 'const' */
2702 else if (parser->tok == '.')
2707 ast_expression *oldex;
2708 bool isfunc = false;
2710 lex_ctx ctx = parser_ctx(parser);
2713 /* entity-member declaration */
2714 if (!parser_next(parser) || parser->tok != TOKEN_TYPENAME) {
2715 parseerror(parser, "expected member variable definition");
2719 /* remember the base/return type */
2720 basetype = parser_token(parser)->constval.t;
2722 /* parse into the declaration */
2723 if (!parser_next(parser)) {
2724 parseerror(parser, "expected field definition");
2728 /* parse the field type fully */
2729 typevar = var = parse_type(parser, basetype, &isfunc);
2734 var = ast_value_copy(typevar);
2735 /* now the field name */
2736 if (parser->tok != TOKEN_IDENT) {
2737 parseerror(parser, "expected field name");
2742 /* check for an existing field
2743 * in original qc we also have to check for an existing
2744 * global named like the field
2746 if (opts_standard == COMPILER_QCC) {
2747 if (parser_find_global(parser, parser_tokval(parser))) {
2748 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
2756 fval = ast_value_new(ctx, var->name, TYPE_FUNCTION);
2758 ast_value_delete(var);
2761 fval->expression.next = (ast_expression*)var;
2762 MEM_VECTOR_MOVE(&var->expression, params, &fval->expression, params);
2763 fval->expression.variadic = var->expression.variadic;
2767 if (!strcmp(parser_tokval(parser), "end_sys_fields")) {
2768 if (parsewarning(parser, WARN_END_SYS_FIELDS, "by convention end_sys_fields should be declared as global, rather than a field")) {
2769 ast_value_delete(var);
2774 /* turn it into a field */
2775 fld = ast_value_new(ctx, parser_tokval(parser), TYPE_FIELD);
2776 fld->expression.next = (ast_expression*)var;
2778 if ( (oldex = parser_find_field(parser, parser_tokval(parser)))) {
2779 if (ast_istype(oldex, ast_member)) {
2780 parseerror(parser, "cannot declare a field with the same name as a vector component, component %s has been declared here: %s:%i",
2781 parser_tokval(parser), ast_ctx(oldex).file, (int)ast_ctx(oldex).line);
2785 if (!ast_istype(oldex, ast_value)) {
2786 /* not possible / sanity check */
2787 parseerror(parser, "internal error: %s is not an ast_value", parser_tokval(parser));
2792 if (!ast_compare_type(oldex, (ast_expression*)fld)) {
2793 parseerror(parser, "field %s has previously been declared with a different type here: %s:%i",
2794 parser_tokval(parser), ast_ctx(oldex).file, (int)ast_ctx(oldex).line);
2798 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` has already been declared here: %s:%i",
2799 parser_tokval(parser), ast_ctx(oldex).file, (int)ast_ctx(oldex).line))
2810 varent.var = (ast_expression*)fld;
2811 varent.name = util_strdup(fld->name);
2812 (void)!parser_t_fields_add(parser, varent);
2814 if (var->expression.vtype == TYPE_VECTOR)
2816 /* create _x, _y and _z fields as well */
2818 if (!create_vector_members(parser, fld, ve)) {
2822 (void)!parser_t_fields_add(parser, ve[0]);
2823 (void)!parser_t_fields_add(parser, ve[1]);
2824 (void)!parser_t_fields_add(parser, ve[2]);
2828 if (!parser_next(parser)) {
2829 parseerror(parser, "expected semicolon or another field name");
2832 if (parser->tok == ';')
2834 if (parser->tok != ',' || !parser_next(parser)) {
2835 parseerror(parser, "expected semicolon or another field name");
2839 ast_delete(typevar);
2841 /* skip the semicolon */
2842 if (!parser_next(parser))
2843 return parser->tok == TOKEN_EOF;
2847 else if (parser->tok == '$')
2849 if (!parser_next(parser)) {
2850 parseerror(parser, "parse error");
2856 parseerror(parser, "unexpected token: %s", parser->lex->tok.value);
2862 static parser_t *parser;
2866 parser = (parser_t*)mem_a(sizeof(parser_t));
2870 memset(parser, 0, sizeof(*parser));
2874 bool parser_compile(const char *filename)
2876 parser->lex = lex_open(filename);
2878 printf("failed to open file \"%s\"\n", filename);
2882 /* initial lexer/parser state */
2883 parser->lex->flags.noops = true;
2885 if (parser_next(parser))
2887 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
2889 if (!parser_global_statement(parser)) {
2890 if (parser->tok == TOKEN_EOF)
2891 parseerror(parser, "unexpected eof");
2892 else if (!parser->errors)
2893 parseerror(parser, "there have been errors, bailing out");
2894 lex_close(parser->lex);
2900 parseerror(parser, "parse error");
2901 lex_close(parser->lex);
2906 lex_close(parser->lex);
2909 return !parser->errors;
2912 void parser_cleanup()
2915 for (i = 0; i < parser->functions_count; ++i) {
2916 ast_delete(parser->functions[i]);
2918 for (i = 0; i < parser->imm_vector_count; ++i) {
2919 ast_delete(parser->imm_vector[i]);
2921 for (i = 0; i < parser->imm_string_count; ++i) {
2922 ast_delete(parser->imm_string[i]);
2924 for (i = 0; i < parser->imm_float_count; ++i) {
2925 ast_delete(parser->imm_float[i]);
2927 for (i = 0; i < parser->fields_count; ++i) {
2928 ast_delete(parser->fields[i].var);
2929 mem_d(parser->fields[i].name);
2931 for (i = 0; i < parser->globals_count; ++i) {
2932 ast_delete(parser->globals[i].var);
2933 mem_d(parser->globals[i].name);
2935 MEM_VECTOR_CLEAR(parser, functions);
2936 MEM_VECTOR_CLEAR(parser, imm_vector);
2937 MEM_VECTOR_CLEAR(parser, imm_string);
2938 MEM_VECTOR_CLEAR(parser, imm_float);
2939 MEM_VECTOR_CLEAR(parser, globals);
2940 MEM_VECTOR_CLEAR(parser, fields);
2941 MEM_VECTOR_CLEAR(parser, locals);
2946 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
2948 return util_crc16(old, str, strlen(str));
2951 static void progdefs_crc_file(const char *str)
2953 /* write to progdefs.h here */
2956 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
2958 old = progdefs_crc_sum(old, str);
2959 progdefs_crc_file(str);
2963 static void generate_checksum(parser_t *parser)
2965 uint16_t crc = 0xFFFF;
2968 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
2969 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
2971 progdefs_crc_file("\tint\tpad;\n");
2972 progdefs_crc_file("\tint\tofs_return[3];\n");
2973 progdefs_crc_file("\tint\tofs_parm0[3];\n");
2974 progdefs_crc_file("\tint\tofs_parm1[3];\n");
2975 progdefs_crc_file("\tint\tofs_parm2[3];\n");
2976 progdefs_crc_file("\tint\tofs_parm3[3];\n");
2977 progdefs_crc_file("\tint\tofs_parm4[3];\n");
2978 progdefs_crc_file("\tint\tofs_parm5[3];\n");
2979 progdefs_crc_file("\tint\tofs_parm6[3];\n");
2980 progdefs_crc_file("\tint\tofs_parm7[3];\n");
2982 for (i = 0; i < parser->crc_globals; ++i) {
2983 if (!ast_istype(parser->globals[i].var, ast_value))
2985 switch (parser->globals[i].var->expression.vtype) {
2986 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
2987 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
2988 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
2989 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
2991 crc = progdefs_crc_both(crc, "\tint\t");
2994 crc = progdefs_crc_both(crc, parser->globals[i].name);
2995 crc = progdefs_crc_both(crc, ";\n");
2997 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
2998 for (i = 0; i < parser->crc_fields; ++i) {
2999 if (!ast_istype(parser->fields[i].var, ast_value))
3001 switch (parser->fields[i].var->expression.next->expression.vtype) {
3002 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
3003 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
3004 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
3005 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
3007 crc = progdefs_crc_both(crc, "\tint\t");
3010 crc = progdefs_crc_both(crc, parser->fields[i].name);
3011 crc = progdefs_crc_both(crc, ";\n");
3013 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
3018 bool parser_finish(const char *output)
3024 if (!parser->errors)
3026 ir = ir_builder_new("gmqcc_out");
3028 printf("failed to allocate builder\n");
3032 for (i = 0; i < parser->fields_count; ++i) {
3035 if (!ast_istype(parser->fields[i].var, ast_value))
3037 field = (ast_value*)parser->fields[i].var;
3038 isconst = field->isconst;
3039 field->isconst = false;
3040 if (!ast_global_codegen((ast_value*)field, ir)) {
3041 printf("failed to generate field %s\n", field->name);
3042 ir_builder_delete(ir);
3047 ast_expression *subtype;
3048 field->isconst = true;
3049 subtype = field->expression.next;
3050 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
3051 if (subtype->expression.vtype == TYPE_FIELD)
3052 ifld->fieldtype = subtype->expression.next->expression.vtype;
3053 else if (subtype->expression.vtype == TYPE_FUNCTION)
3054 ifld->outtype = subtype->expression.next->expression.vtype;
3055 (void)!ir_value_set_field(field->ir_v, ifld);
3058 for (i = 0; i < parser->globals_count; ++i) {
3060 if (!ast_istype(parser->globals[i].var, ast_value))
3062 asvalue = (ast_value*)(parser->globals[i].var);
3063 if (!asvalue->uses && !asvalue->isconst && asvalue->expression.vtype != TYPE_FUNCTION) {
3064 if (strcmp(asvalue->name, "end_sys_globals") &&
3065 strcmp(asvalue->name, "end_sys_fields"))
3067 retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
3068 "unused global: `%s`", asvalue->name);
3071 if (!ast_global_codegen(asvalue, ir)) {
3072 printf("failed to generate global %s\n", parser->globals[i].name);
3073 ir_builder_delete(ir);
3077 for (i = 0; i < parser->imm_float_count; ++i) {
3078 if (!ast_global_codegen(parser->imm_float[i], ir)) {
3079 printf("failed to generate global %s\n", parser->imm_float[i]->name);
3080 ir_builder_delete(ir);
3084 for (i = 0; i < parser->imm_string_count; ++i) {
3085 if (!ast_global_codegen(parser->imm_string[i], ir)) {
3086 printf("failed to generate global %s\n", parser->imm_string[i]->name);
3087 ir_builder_delete(ir);
3091 for (i = 0; i < parser->imm_vector_count; ++i) {
3092 if (!ast_global_codegen(parser->imm_vector[i], ir)) {
3093 printf("failed to generate global %s\n", parser->imm_vector[i]->name);
3094 ir_builder_delete(ir);
3098 for (i = 0; i < parser->functions_count; ++i) {
3099 if (!ast_function_codegen(parser->functions[i], ir)) {
3100 printf("failed to generate function %s\n", parser->functions[i]->name);
3101 ir_builder_delete(ir);
3104 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
3105 printf("failed to finalize function %s\n", parser->functions[i]->name);
3106 ir_builder_delete(ir);
3113 ir_builder_dump(ir, printf);
3115 generate_checksum(parser);
3117 if (!ir_builder_generate(ir, output)) {
3118 printf("*** failed to generate output file\n");
3119 ir_builder_delete(ir);
3124 ir_builder_delete(ir);
3128 printf("*** there were compile errors\n");