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 void 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);
50 static ast_expression* parser_parse_statement_or_block(parser_t *parser);
51 static ast_expression* parser_expression_leave(parser_t *parser, bool stopatcomma);
52 static ast_expression* parser_expression(parser_t *parser, bool stopatcomma);
54 void parseerror(parser_t *parser, const char *fmt, ...)
61 vprintmsg(LVL_ERROR, parser->lex->tok->ctx.file, parser->lex->tok->ctx.line, "parse error", fmt, ap);
65 /* returns true if it counts as an error */
66 bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
69 int lvl = LVL_WARNING;
71 if (!OPTS_WARN(warntype))
80 vprintmsg(lvl, parser->lex->tok->ctx.file, parser->lex->tok->ctx.line, "warning", fmt, ap);
86 /**********************************************************************
87 * some maths used for constant folding
90 vector vec3_add(vector a, vector b)
99 vector vec3_sub(vector a, vector b)
108 qcfloat vec3_mulvv(vector a, vector b)
110 return (a.x * b.x + a.y * b.y + a.z * b.z);
113 vector vec3_mulvf(vector a, float b)
122 /**********************************************************************
126 bool parser_next(parser_t *parser)
128 /* lex_do kills the previous token */
129 parser->tok = lex_do(parser->lex);
130 if (parser->tok == TOKEN_EOF || parser->tok >= TOKEN_ERROR)
135 /* lift a token out of the parser so it's not destroyed by parser_next */
136 token *parser_lift(parser_t *parser)
138 token *tok = parser->lex->tok;
139 parser->lex->tok = NULL;
143 #define parser_tokval(p) (p->lex->tok->value)
144 #define parser_token(p) (p->lex->tok)
145 #define parser_ctx(p) (p->lex->tok->ctx)
147 ast_value* parser_const_float(parser_t *parser, double d)
151 for (i = 0; i < parser->imm_float_count; ++i) {
152 if (parser->imm_float[i]->constval.vfloat == d)
153 return parser->imm_float[i];
155 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_FLOAT);
157 out->constval.vfloat = d;
158 if (!parser_t_imm_float_add(parser, out)) {
159 ast_value_delete(out);
165 ast_value* parser_const_float_0(parser_t *parser)
167 if (!parser->imm_float_zero)
168 parser->imm_float_zero = parser_const_float(parser, 0);
169 return parser->imm_float_zero;
172 char *parser_strdup(const char *str)
175 /* actually dup empty strings */
176 char *out = mem_a(1);
180 return util_strdup(str);
183 ast_value* parser_const_string(parser_t *parser, const char *str)
187 for (i = 0; i < parser->imm_string_count; ++i) {
188 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
189 return parser->imm_string[i];
191 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
193 out->constval.vstring = parser_strdup(str);
194 if (!parser_t_imm_string_add(parser, out)) {
195 ast_value_delete(out);
201 ast_value* parser_const_vector(parser_t *parser, vector v)
205 for (i = 0; i < parser->imm_vector_count; ++i) {
206 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
207 return parser->imm_vector[i];
209 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
211 out->constval.vvec = v;
212 if (!parser_t_imm_vector_add(parser, out)) {
213 ast_value_delete(out);
219 ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
225 return parser_const_vector(parser, v);
228 ast_value* parser_const_vector_0(parser_t *parser)
230 if (!parser->imm_vector_zero)
231 parser->imm_vector_zero = parser_const_vector_f(parser, 0, 0, 0);
232 return parser->imm_vector_zero;
235 ast_expression* parser_find_field(parser_t *parser, const char *name)
238 for (i = 0; i < parser->fields_count; ++i) {
239 if (!strcmp(parser->fields[i].name, name))
240 return parser->fields[i].var;
245 ast_expression* parser_find_global(parser_t *parser, const char *name)
248 for (i = 0; i < parser->globals_count; ++i) {
249 if (!strcmp(parser->globals[i].name, name))
250 return parser->globals[i].var;
255 ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto)
259 for (i = parser->locals_count; i > upto;) {
261 if (!strcmp(parser->locals[i].name, name))
262 return parser->locals[i].var;
264 if (!parser->function)
266 fun = parser->function->vtype;
267 for (i = 0; i < fun->expression.params_count; ++i) {
268 if (!strcmp(fun->expression.params[i]->name, name))
269 return (ast_expression*)(fun->expression.params[i]);
274 ast_expression* parser_find_var(parser_t *parser, const char *name)
277 v = parser_find_local(parser, name, 0);
278 if (!v) v = parser_find_global(parser, name);
283 MEM_VECTOR_MAKE(ast_value*, p);
285 MEM_VEC_FUNCTIONS(paramlist_t, ast_value*, p)
287 static ast_value *parser_parse_type(parser_t *parser, int basetype, bool *isfunc)
291 lex_ctx ctx = parser_ctx(parser);
292 int vtype = basetype;
296 MEM_VECTOR_INIT(¶ms, p);
300 if (parser->tok == '(') {
305 bool isfield = false;
308 if (!parser_next(parser))
311 if (parser->tok == ')')
314 if (parser->tok == '.') {
316 if (!parser_next(parser)) {
317 parseerror(parser, "expected field parameter type");
322 temptype = parser_token(parser)->constval.t;
323 if (!parser_next(parser))
326 param = parser_parse_type(parser, temptype, &dummy);
332 if (parser->tok == TOKEN_IDENT) {
333 /* named parameter */
334 if (!ast_value_set_name(param, parser_tokval(parser)))
336 if (!parser_next(parser))
341 fld = ast_value_new(ctx, param->name, TYPE_FIELD);
342 fld->expression.next = (ast_expression*)param;
346 if (!paramlist_t_p_add(¶ms, param)) {
347 parseerror(parser, "Out of memory while parsing typename");
351 if (parser->tok == ',')
353 if (parser->tok == ')')
355 parseerror(parser, "Unexpected token");
358 if (!parser_next(parser))
362 var = ast_value_new(ctx, "<unnamed>", vtype);
365 MEM_VECTOR_MOVE(¶ms, p, &var->expression, params);
368 for (i = 0; i < params.p_count; ++i)
369 ast_value_delete(params.p[i]);
370 MEM_VECTOR_CLEAR(¶ms, p);
376 size_t etype; /* 0 = expression, others are operators */
380 ast_block *block; /* for commas and function calls */
385 MEM_VECTOR_MAKE(sy_elem, out);
386 MEM_VECTOR_MAKE(sy_elem, ops);
388 MEM_VEC_FUNCTIONS(shunt, sy_elem, out)
389 MEM_VEC_FUNCTIONS(shunt, sy_elem, ops)
391 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
401 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
404 e.out = (ast_expression*)v;
411 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
413 e.etype = 1 + (op - operators);
421 static sy_elem syparen(lex_ctx ctx, int p, size_t off) {
433 # define DEBUGSHUNTDO(x) x
435 # define DEBUGSHUNTDO(x)
438 static bool parser_sy_pop(parser_t *parser, shunt *sy)
442 ast_expression *out = NULL;
443 ast_expression *exprs[3];
444 ast_block *blocks[3];
445 ast_value *asvalue[3];
447 qcint generated_op = 0;
449 if (!sy->ops_count) {
450 parseerror(parser, "internal error: missing operator");
454 if (sy->ops[sy->ops_count-1].paren) {
455 parseerror(parser, "unmatched parenthesis");
459 op = &operators[sy->ops[sy->ops_count-1].etype - 1];
460 ctx = sy->ops[sy->ops_count-1].ctx;
462 DEBUGSHUNTDO(printf("apply %s\n", op->op));
464 if (sy->out_count < op->operands) {
465 parseerror(parser, "internal error: not enough operands: %i (operator %s (%i))", sy->out_count,
466 op->op, (int)op->id);
472 sy->out_count -= op->operands;
473 for (i = 0; i < op->operands; ++i) {
474 exprs[i] = sy->out[sy->out_count+i].out;
475 blocks[i] = sy->out[sy->out_count+i].block;
476 asvalue[i] = (ast_value*)exprs[i];
479 if (blocks[0] && !blocks[0]->exprs_count && op->id != opid1(',')) {
480 parseerror(parser, "internal error: operator cannot be applied on empty blocks");
484 #define NotSameType(T) \
485 (exprs[0]->expression.vtype != exprs[1]->expression.vtype || \
486 exprs[0]->expression.vtype != T)
487 #define CanConstFold1(A) \
488 (ast_istype((A), ast_value) && ((ast_value*)(A))->isconst)
489 #define CanConstFold(A, B) \
490 (CanConstFold1(A) && CanConstFold1(B))
491 #define ConstV(i) (asvalue[(i)]->constval.vvec)
492 #define ConstF(i) (asvalue[(i)]->constval.vfloat)
493 #define ConstS(i) (asvalue[(i)]->constval.vstring)
497 parseerror(parser, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
501 if (exprs[0]->expression.vtype == TYPE_ENTITY) {
502 if (exprs[1]->expression.vtype != TYPE_FIELD) {
503 parseerror(parser, "type error: right hand of member-operand should be an entity-field");
506 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
508 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
509 parseerror(parser, "internal error: vector access is not supposed to be handled at this point");
513 parseerror(parser, "type error: member-of operator on something that is not an entity or vector");
520 if (!ast_block_exprs_add(blocks[0], exprs[1]))
523 blocks[0] = ast_block_new(ctx);
524 if (!ast_block_exprs_add(blocks[0], exprs[0]) ||
525 !ast_block_exprs_add(blocks[0], exprs[1]))
530 if (!ast_block_set_type(blocks[0], exprs[1]))
533 sy->out[sy->out_count++] = syblock(ctx, blocks[0]);
537 switch (exprs[0]->expression.vtype) {
539 if (CanConstFold1(exprs[0]))
540 out = (ast_expression*)parser_const_float(parser, -ConstF(0));
542 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
543 (ast_expression*)parser_const_float_0(parser),
547 if (CanConstFold1(exprs[0]))
548 out = (ast_expression*)parser_const_vector_f(parser,
549 -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
551 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
552 (ast_expression*)parser_const_vector_0(parser),
556 parseerror(parser, "invalid types used in expression: cannot negate type %s",
557 type_name[exprs[0]->expression.vtype]);
563 switch (exprs[0]->expression.vtype) {
565 if (CanConstFold1(exprs[0]))
566 out = (ast_expression*)parser_const_float(parser, !ConstF(0));
568 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
571 if (CanConstFold1(exprs[0]))
572 out = (ast_expression*)parser_const_float(parser,
573 (!ConstV(0).x && !ConstV(0).y && !ConstV(0).z));
575 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
578 if (CanConstFold1(exprs[0]))
579 out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
581 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
583 /* we don't constant-fold NOT for these types */
585 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
588 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
591 parseerror(parser, "invalid types used in expression: cannot logically negate type %s",
592 type_name[exprs[0]->expression.vtype]);
598 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
599 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
601 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
602 type_name[exprs[0]->expression.vtype],
603 type_name[exprs[1]->expression.vtype]);
606 switch (exprs[0]->expression.vtype) {
608 if (CanConstFold(exprs[0], exprs[1]))
610 out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
613 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
616 if (CanConstFold(exprs[0], exprs[1]))
617 out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
619 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
622 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
623 type_name[exprs[0]->expression.vtype],
624 type_name[exprs[1]->expression.vtype]);
629 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
630 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
632 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
633 type_name[exprs[1]->expression.vtype],
634 type_name[exprs[0]->expression.vtype]);
637 switch (exprs[0]->expression.vtype) {
639 if (CanConstFold(exprs[0], exprs[1]))
640 out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
642 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
645 if (CanConstFold(exprs[0], exprs[1]))
646 out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
648 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
651 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
652 type_name[exprs[1]->expression.vtype],
653 type_name[exprs[0]->expression.vtype]);
658 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
659 exprs[0]->expression.vtype != TYPE_VECTOR &&
660 exprs[0]->expression.vtype != TYPE_FLOAT &&
661 exprs[1]->expression.vtype != TYPE_VECTOR &&
662 exprs[1]->expression.vtype != TYPE_FLOAT)
664 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
665 type_name[exprs[1]->expression.vtype],
666 type_name[exprs[0]->expression.vtype]);
669 switch (exprs[0]->expression.vtype) {
671 if (exprs[1]->expression.vtype == TYPE_VECTOR)
673 if (CanConstFold(exprs[0], exprs[1]))
674 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
676 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
680 if (CanConstFold(exprs[0], exprs[1]))
681 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
683 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
687 if (exprs[1]->expression.vtype == TYPE_FLOAT)
689 if (CanConstFold(exprs[0], exprs[1]))
690 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
692 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
696 if (CanConstFold(exprs[0], exprs[1]))
697 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
699 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
703 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
704 type_name[exprs[1]->expression.vtype],
705 type_name[exprs[0]->expression.vtype]);
710 if (NotSameType(TYPE_FLOAT)) {
711 parseerror(parser, "invalid types used in expression: cannot divide types %s and %s",
712 type_name[exprs[0]->expression.vtype],
713 type_name[exprs[1]->expression.vtype]);
716 if (CanConstFold(exprs[0], exprs[1]))
717 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
719 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
723 parseerror(parser, "qc does not have a modulo operator");
727 if (NotSameType(TYPE_FLOAT)) {
728 parseerror(parser, "invalid types used in expression: cannot perform bit operations between types %s and %s",
729 type_name[exprs[0]->expression.vtype],
730 type_name[exprs[1]->expression.vtype]);
733 if (CanConstFold(exprs[0], exprs[1]))
734 out = (ast_expression*)parser_const_float(parser,
735 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
736 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
738 out = (ast_expression*)ast_binary_new(ctx,
739 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
743 parseerror(parser, "TODO: bitxor");
748 case opid3('<','<','='):
749 case opid3('>','>','='):
750 parseerror(parser, "TODO: shifts");
754 generated_op += 1; /* INSTR_OR */
756 generated_op += INSTR_AND;
757 if (NotSameType(TYPE_FLOAT)) {
758 parseerror(parser, "invalid types used in expression: cannot perform logical operations between types %s and %s",
759 type_name[exprs[0]->expression.vtype],
760 type_name[exprs[1]->expression.vtype]);
761 parseerror(parser, "TODO: logical ops for arbitrary types using INSTR_NOT");
762 parseerror(parser, "TODO: optional early out");
765 if (opts_standard == COMPILER_GMQCC)
766 printf("TODO: early out logic\n");
767 if (CanConstFold(exprs[0], exprs[1]))
768 out = (ast_expression*)parser_const_float(parser,
769 (generated_op == INSTR_OR ? (ConstF(0) || ConstF(1)) : (ConstF(0) && ConstF(1))));
771 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
775 generated_op += 1; /* INSTR_GT */
777 generated_op += 1; /* INSTR_LT */
778 case opid2('>', '='):
779 generated_op += 1; /* INSTR_GE */
780 case opid2('<', '='):
781 generated_op += INSTR_LE;
782 if (NotSameType(TYPE_FLOAT)) {
783 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
784 type_name[exprs[0]->expression.vtype],
785 type_name[exprs[1]->expression.vtype]);
788 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
790 case opid2('!', '='):
791 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
792 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
793 type_name[exprs[0]->expression.vtype],
794 type_name[exprs[1]->expression.vtype]);
797 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
799 case opid2('=', '='):
800 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
801 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
802 type_name[exprs[0]->expression.vtype],
803 type_name[exprs[1]->expression.vtype]);
806 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
810 if (ast_istype(exprs[0], ast_entfield))
811 assignop = type_storep_instr[exprs[0]->expression.vtype];
813 assignop = type_store_instr[exprs[0]->expression.vtype];
814 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
818 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
819 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
821 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
822 type_name[exprs[0]->expression.vtype],
823 type_name[exprs[1]->expression.vtype]);
826 if (ast_istype(exprs[0], ast_entfield))
827 assignop = type_storep_instr[exprs[0]->expression.vtype];
829 assignop = type_store_instr[exprs[0]->expression.vtype];
830 switch (exprs[0]->expression.vtype) {
832 out = (ast_expression*)ast_binstore_new(ctx, assignop,
833 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
837 out = (ast_expression*)ast_binstore_new(ctx, assignop,
838 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
842 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
843 type_name[exprs[0]->expression.vtype],
844 type_name[exprs[1]->expression.vtype]);
852 parseerror(parser, "failed to apply operand %s", op->op);
856 DEBUGSHUNTDO(printf("applied %s\n", op->op));
857 sy->out[sy->out_count++] = syexp(ctx, out);
861 static bool parser_close_call(parser_t *parser, shunt *sy)
863 /* was a function call */
871 fid = sy->ops[sy->ops_count].off;
873 /* out[fid] is the function
874 * everything above is parameters...
876 * 1 params = ast_expression
880 if (sy->out_count < 1 || sy->out_count <= fid) {
881 parseerror(parser, "internal error: function call needs function and parameter list...");
885 fun = sy->out[fid].out;
887 call = ast_call_new(sy->ops[sy->ops_count].ctx, fun);
889 parseerror(parser, "out of memory");
893 if (fid+1 == sy->out_count) {
896 } else if (fid+2 == sy->out_count) {
899 params = sy->out[sy->out_count].block;
903 if (!ast_call_params_add(call, sy->out[sy->out_count].out)) {
904 ast_delete(sy->out[sy->out_count].out);
905 parseerror(parser, "out of memory");
909 paramcount = params->exprs_count;
910 MEM_VECTOR_MOVE(params, exprs, call, params);
914 parseerror(parser, "invalid function call");
918 /* overwrite fid, the function, with a call */
919 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
921 if (fun->expression.vtype != TYPE_FUNCTION) {
922 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
926 if (!fun->expression.next) {
927 parseerror(parser, "could not determine function return type");
930 if (fun->expression.params_count != paramcount) {
931 parseerror(parser, "expected %i parameters, got %i", (int)fun->expression.params_count, paramcount);
939 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
941 if (!sy->ops_count) {
942 parseerror(parser, "unmatched closing paren");
945 if (sy->ops[sy->ops_count-1].paren == 1) {
946 parseerror(parser, "empty parenthesis expression");
949 while (sy->ops_count) {
950 if (sy->ops[sy->ops_count-1].paren == 'f') {
951 if (!parser_close_call(parser, sy))
955 if (sy->ops[sy->ops_count-1].paren == 1) {
957 return !functions_only;
959 if (!parser_sy_pop(parser, sy))
965 static void parser_reclassify_token(parser_t *parser)
968 for (i = 0; i < operator_count; ++i) {
969 if (!strcmp(parser_tokval(parser), operators[i].op)) {
970 parser->tok = TOKEN_OPERATOR;
976 static ast_expression* parser_expression_leave(parser_t *parser, bool stopatcomma)
978 ast_expression *expr = NULL;
981 bool gotmemberof = false;
983 /* count the parens because an if starts with one, so the
984 * end of a condition is an unmatched closing paren
988 MEM_VECTOR_INIT(&sy, out);
989 MEM_VECTOR_INIT(&sy, ops);
991 parser->lex->flags.noops = false;
993 parser_reclassify_token(parser);
1000 parser->memberof = 0;
1002 if (parser->tok == TOKEN_IDENT)
1004 ast_expression *var;
1006 parseerror(parser, "expected operator or end of statement");
1011 if (opts_standard == COMPILER_GMQCC)
1013 if (parser->memberof == TYPE_ENTITY) {
1014 /* still get vars first since there could be a fieldpointer */
1015 var = parser_find_var(parser, parser_tokval(parser));
1017 var = parser_find_field(parser, parser_tokval(parser));
1019 else if (parser->memberof == TYPE_VECTOR)
1021 parseerror(parser, "TODO: implement effective vector member access");
1024 else if (parser->memberof) {
1025 parseerror(parser, "namespace for member not found");
1029 var = parser_find_var(parser, parser_tokval(parser));
1031 var = parser_find_var(parser, parser_tokval(parser));
1033 var = parser_find_field(parser, parser_tokval(parser));
1036 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1039 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), var))) {
1040 parseerror(parser, "out of memory");
1043 DEBUGSHUNTDO(printf("push %s\n", parser_tokval(parser)));
1045 else if (parser->tok == TOKEN_FLOATCONST) {
1048 parseerror(parser, "expected operator or end of statement, got constant");
1052 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1055 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
1056 parseerror(parser, "out of memory");
1059 DEBUGSHUNTDO(printf("push %g\n", parser_token(parser)->constval.f));
1061 else if (parser->tok == TOKEN_INTCONST) {
1064 parseerror(parser, "expected operator or end of statement, got constant");
1068 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1071 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
1072 parseerror(parser, "out of memory");
1075 DEBUGSHUNTDO(printf("push %i\n", parser_token(parser)->constval.i));
1077 else if (parser->tok == TOKEN_STRINGCONST) {
1080 parseerror(parser, "expected operator or end of statement, got constant");
1084 val = parser_const_string(parser, parser_tokval(parser));
1087 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
1088 parseerror(parser, "out of memory");
1091 DEBUGSHUNTDO(printf("push string\n"));
1093 else if (parser->tok == TOKEN_VECTORCONST) {
1096 parseerror(parser, "expected operator or end of statement, got constant");
1100 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1103 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
1104 parseerror(parser, "out of memory");
1107 DEBUGSHUNTDO(printf("push '%g %g %g'\n",
1108 parser_token(parser)->constval.v.x,
1109 parser_token(parser)->constval.v.y,
1110 parser_token(parser)->constval.v.z));
1112 else if (parser->tok == '(') {
1113 parseerror(parser, "internal error: '(' should be classified as operator");
1116 else if (parser->tok == ')') {
1118 DEBUGSHUNTDO(printf("do[op] )\n"));
1122 /* we do expect an operator next */
1123 /* closing an opening paren */
1124 if (!parser_close_paren(parser, &sy, false))
1127 DEBUGSHUNTDO(printf("do[nop] )\n"));
1131 /* allowed for function calls */
1132 if (!parser_close_paren(parser, &sy, true))
1137 else if (parser->tok != TOKEN_OPERATOR) {
1139 parseerror(parser, "expected operator or end of statement");
1146 /* classify the operator */
1147 /* TODO: suffix operators */
1148 const oper_info *op;
1149 const oper_info *olast = NULL;
1151 for (o = 0; o < operator_count; ++o) {
1152 if ((!(operators[o].flags & OP_PREFIX) == wantop) &&
1153 !(operators[o].flags & OP_SUFFIX) && /* remove this */
1154 !strcmp(parser_tokval(parser), operators[o].op))
1159 if (o == operator_count) {
1160 /* no operator found... must be the end of the statement */
1163 /* found an operator */
1166 /* when declaring variables, a comma starts a new variable */
1167 if (op->id == opid1(',') && !parens && stopatcomma)
1170 if (sy.ops_count && !sy.ops[sy.ops_count-1].paren)
1171 olast = &operators[sy.ops[sy.ops_count-1].etype-1];
1174 (op->prec < olast->prec) ||
1175 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1177 if (!parser_sy_pop(parser, &sy))
1179 if (sy.ops_count && !sy.ops[sy.ops_count-1].paren)
1180 olast = &operators[sy.ops[sy.ops_count-1].etype-1];
1185 if (op->id == opid1('.') && opts_standard == COMPILER_GMQCC) {
1186 /* for gmqcc standard: open up the namespace of the previous type */
1187 ast_expression *prevex = sy.out[sy.out_count-1].out;
1189 parseerror(parser, "unexpected member operator");
1192 if (prevex->expression.vtype == TYPE_ENTITY)
1193 parser->memberof = TYPE_ENTITY;
1194 else if (prevex->expression.vtype == TYPE_VECTOR)
1195 parser->memberof = TYPE_VECTOR;
1197 parseerror(parser, "type error: type has no members");
1203 if (op->id == opid1('(')) {
1205 DEBUGSHUNTDO(printf("push (\n"));
1207 /* we expected an operator, this is the function-call operator */
1208 if (!shunt_ops_add(&sy, syparen(parser_ctx(parser), 'f', sy.out_count-1))) {
1209 parseerror(parser, "out of memory");
1214 if (!shunt_ops_add(&sy, syparen(parser_ctx(parser), 1, 0))) {
1215 parseerror(parser, "out of memory");
1218 DEBUGSHUNTDO(printf("push (\n"));
1222 DEBUGSHUNTDO(printf("push operator %s\n", op->op));
1223 if (!shunt_ops_add(&sy, syop(parser_ctx(parser), op)))
1228 if (!parser_next(parser)) {
1231 if (parser->tok == ';') {
1236 while (sy.ops_count) {
1237 if (!parser_sy_pop(parser, &sy))
1241 parser->lex->flags.noops = true;
1242 if (!sy.out_count) {
1243 parseerror(parser, "empty expression");
1246 expr = sy.out[0].out;
1247 MEM_VECTOR_CLEAR(&sy, out);
1248 MEM_VECTOR_CLEAR(&sy, ops);
1249 DEBUGSHUNTDO(printf("shunt done\n"));
1253 parser->lex->flags.noops = true;
1254 MEM_VECTOR_CLEAR(&sy, out);
1255 MEM_VECTOR_CLEAR(&sy, ops);
1259 static ast_expression* parser_expression(parser_t *parser, bool stopatcomma)
1261 ast_expression *e = parser_expression_leave(parser, stopatcomma);
1264 if (!parser_next(parser)) {
1271 static bool parser_parse_if(parser_t *parser, ast_block *block, ast_expression **out)
1274 ast_expression *cond, *ontrue, *onfalse = NULL;
1276 lex_ctx ctx = parser_ctx(parser);
1278 /* skip the 'if' and check for opening paren */
1279 if (!parser_next(parser) || parser->tok != '(') {
1280 parseerror(parser, "expected 'if' condition in parenthesis");
1283 /* parse into the expression */
1284 if (!parser_next(parser)) {
1285 parseerror(parser, "expected 'if' condition after opening paren");
1288 /* parse the condition */
1289 cond = parser_expression_leave(parser, false);
1293 if (parser->tok != ')') {
1294 parseerror(parser, "expected closing paren after 'if' condition");
1298 /* parse into the 'then' branch */
1299 if (!parser_next(parser)) {
1300 parseerror(parser, "expected statement for on-true branch of 'if'");
1304 ontrue = parser_parse_statement_or_block(parser);
1309 /* check for an else */
1310 if (!strcmp(parser_tokval(parser), "else")) {
1311 /* parse into the 'else' branch */
1312 if (!parser_next(parser)) {
1313 parseerror(parser, "expected on-false branch after 'else'");
1318 onfalse = parser_parse_statement_or_block(parser);
1326 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
1327 *out = (ast_expression*)ifthen;
1331 static bool parser_parse_while(parser_t *parser, ast_block *block, ast_expression **out)
1334 ast_expression *cond, *ontrue;
1336 lex_ctx ctx = parser_ctx(parser);
1338 /* skip the 'while' and check for opening paren */
1339 if (!parser_next(parser) || parser->tok != '(') {
1340 parseerror(parser, "expected 'while' condition in parenthesis");
1343 /* parse into the expression */
1344 if (!parser_next(parser)) {
1345 parseerror(parser, "expected 'while' condition after opening paren");
1348 /* parse the condition */
1349 cond = parser_expression_leave(parser, false);
1353 if (parser->tok != ')') {
1354 parseerror(parser, "expected closing paren after 'while' condition");
1358 /* parse into the 'then' branch */
1359 if (!parser_next(parser)) {
1360 parseerror(parser, "expected while-loop body");
1364 ontrue = parser_parse_statement_or_block(parser);
1370 aloop = ast_loop_new(ctx, NULL, cond, NULL, NULL, ontrue);
1371 *out = (ast_expression*)aloop;
1375 static bool parser_parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
1378 ast_expression *cond, *ontrue;
1380 lex_ctx ctx = parser_ctx(parser);
1382 /* skip the 'do' and get the body */
1383 if (!parser_next(parser)) {
1384 parseerror(parser, "expected loop body");
1387 ontrue = parser_parse_statement_or_block(parser);
1391 /* expect the "while" */
1392 if (parser->tok != TOKEN_KEYWORD ||
1393 strcmp(parser_tokval(parser), "while"))
1395 parseerror(parser, "expected 'while' and condition");
1400 /* skip the 'while' and check for opening paren */
1401 if (!parser_next(parser) || parser->tok != '(') {
1402 parseerror(parser, "expected 'while' condition in parenthesis");
1406 /* parse into the expression */
1407 if (!parser_next(parser)) {
1408 parseerror(parser, "expected 'while' condition after opening paren");
1412 /* parse the condition */
1413 cond = parser_expression_leave(parser, false);
1417 if (parser->tok != ')') {
1418 parseerror(parser, "expected closing paren after 'while' condition");
1424 if (!parser_next(parser) || parser->tok != ';') {
1425 parseerror(parser, "expected semicolon after condition");
1431 if (!parser_next(parser)) {
1432 parseerror(parser, "parse error");
1438 aloop = ast_loop_new(ctx, NULL, NULL, cond, NULL, ontrue);
1439 *out = (ast_expression*)aloop;
1443 static bool parser_parse_for(parser_t *parser, ast_block *block, ast_expression **out)
1446 ast_expression *initexpr, *cond, *increment, *ontrue;
1447 size_t oldblocklocal;
1449 lex_ctx ctx = parser_ctx(parser);
1451 oldblocklocal = parser->blocklocal;
1452 parser->blocklocal = parser->locals_count;
1459 /* skip the 'while' and check for opening paren */
1460 if (!parser_next(parser) || parser->tok != '(') {
1461 parseerror(parser, "expected 'for' expressions in parenthesis");
1464 /* parse into the expression */
1465 if (!parser_next(parser)) {
1466 parseerror(parser, "expected 'for' initializer after opening paren");
1470 if (parser->tok == TOKEN_TYPENAME) {
1471 if (opts_standard != COMPILER_GMQCC) {
1472 if (parsewarning(parser, WARN_EXTENSIONS,
1473 "current standard does not allow variable declarations in for-loop initializers"))
1477 parseerror(parser, "TODO: assignment of new variables to be non-const");
1479 if (!parser_variable(parser, block))
1482 else if (parser->tok != ';')
1484 initexpr = parser_expression_leave(parser, false);
1489 /* move on to condition */
1490 if (parser->tok != ';') {
1491 parseerror(parser, "expected semicolon after for-loop initializer");
1494 if (!parser_next(parser)) {
1495 parseerror(parser, "expected for-loop condition");
1499 /* parse the condition */
1500 if (parser->tok != ';') {
1501 cond = parser_expression_leave(parser, false);
1506 /* move on to incrementor */
1507 if (parser->tok != ';') {
1508 parseerror(parser, "expected semicolon after for-loop initializer");
1511 if (!parser_next(parser)) {
1512 parseerror(parser, "expected for-loop condition");
1516 /* parse the incrementor */
1517 if (parser->tok != ')') {
1518 increment = parser_expression_leave(parser, false);
1524 if (parser->tok != ')') {
1525 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
1528 /* parse into the 'then' branch */
1529 if (!parser_next(parser)) {
1530 parseerror(parser, "expected for-loop body");
1533 ontrue = parser_parse_statement_or_block(parser);
1538 aloop = ast_loop_new(ctx, initexpr, cond, NULL, increment, ontrue);
1539 *out = (ast_expression*)aloop;
1541 while (parser->locals_count > parser->blocklocal)
1542 parser_pop_local(parser);
1543 parser->blocklocal = oldblocklocal;
1546 if (initexpr) ast_delete(initexpr);
1547 if (cond) ast_delete(cond);
1548 if (increment) ast_delete(increment);
1549 while (parser->locals_count > parser->blocklocal)
1550 parser_pop_local(parser);
1551 parser->blocklocal = oldblocklocal;
1555 static bool parser_parse_statement(parser_t *parser, ast_block *block, ast_expression **out)
1557 if (parser->tok == TOKEN_TYPENAME)
1559 /* local variable */
1561 parseerror(parser, "cannot declare a variable from here");
1564 if (opts_standard == COMPILER_QCC) {
1565 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
1568 if (!parser_variable(parser, block))
1573 else if (parser->tok == TOKEN_KEYWORD)
1575 if (!strcmp(parser_tokval(parser), "local"))
1578 parseerror(parser, "cannot declare a local variable here");
1581 if (!parser_next(parser)) {
1582 parseerror(parser, "expected variable declaration");
1585 if (!parser_variable(parser, block))
1590 else if (!strcmp(parser_tokval(parser), "return"))
1592 ast_expression *exp = NULL;
1593 ast_return *ret = NULL;
1594 ast_value *expected = parser->function->vtype;
1596 if (!parser_next(parser)) {
1597 parseerror(parser, "expected return expression");
1601 if (parser->tok != ';') {
1602 exp = parser_expression(parser, false);
1606 if (exp->expression.vtype != expected->expression.next->expression.vtype) {
1607 parseerror(parser, "return with invalid expression");
1610 ret = ast_return_new(exp->expression.node.context, exp);
1616 if (!parser_next(parser))
1617 parseerror(parser, "parse error");
1618 if (expected->expression.next->expression.vtype != TYPE_VOID) {
1619 if (opts_standard != COMPILER_GMQCC)
1620 parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
1622 parseerror(parser, "return without value");
1624 ret = ast_return_new(parser_ctx(parser), NULL);
1626 *out = (ast_expression*)ret;
1629 else if (!strcmp(parser_tokval(parser), "if"))
1631 return parser_parse_if(parser, block, out);
1633 else if (!strcmp(parser_tokval(parser), "while"))
1635 return parser_parse_while(parser, block, out);
1637 else if (!strcmp(parser_tokval(parser), "do"))
1639 return parser_parse_dowhile(parser, block, out);
1641 else if (!strcmp(parser_tokval(parser), "for"))
1643 if (opts_standard == COMPILER_QCC) {
1644 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
1647 return parser_parse_for(parser, block, out);
1649 parseerror(parser, "Unexpected keyword");
1652 else if (parser->tok == '{')
1655 inner = parser_parse_block(parser);
1658 *out = (ast_expression*)inner;
1663 ast_expression *exp = parser_expression(parser, false);
1671 static void parser_pop_local(parser_t *parser)
1673 parser->locals_count--;
1674 mem_d(parser->locals[parser->locals_count].name);
1677 static ast_block* parser_parse_block(parser_t *parser)
1679 size_t oldblocklocal;
1680 ast_block *block = NULL;
1682 oldblocklocal = parser->blocklocal;
1683 parser->blocklocal = parser->locals_count;
1685 if (!parser_next(parser)) { /* skip the '{' */
1686 parseerror(parser, "expected function body");
1690 block = ast_block_new(parser_ctx(parser));
1692 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
1694 ast_expression *expr;
1695 if (parser->tok == '}')
1698 if (!parser_parse_statement(parser, block, &expr)) {
1699 parseerror(parser, "parse error");
1700 ast_block_delete(block);
1706 if (!ast_block_exprs_add(block, expr)) {
1708 ast_block_delete(block);
1714 if (parser->tok != '}') {
1715 ast_block_delete(block);
1718 (void)parser_next(parser);
1722 while (parser->locals_count > parser->blocklocal)
1723 parser_pop_local(parser);
1724 parser->blocklocal = oldblocklocal;
1725 /* unroll the local vector */
1729 static ast_expression* parser_parse_statement_or_block(parser_t *parser)
1731 ast_expression *expr = NULL;
1732 if (parser->tok == '{')
1733 return (ast_expression*)parser_parse_block(parser);
1734 if (!parser_parse_statement(parser, NULL, &expr))
1739 static bool parser_variable(parser_t *parser, ast_block *localblock)
1741 bool isfunc = false;
1742 ast_function *func = NULL;
1746 ast_expression *olddecl;
1750 int basetype = parser_token(parser)->constval.t;
1756 if (!parser_next(parser)) { /* skip basetype or comma */
1757 parseerror(parser, "expected variable declaration");
1764 ctx = parser_ctx(parser);
1765 var = parser_parse_type(parser, basetype, &isfunc);
1770 if (parser->tok != TOKEN_IDENT) {
1771 parseerror(parser, "expected variable name\n");
1776 if (!localblock && (olddecl = parser_find_global(parser, parser_tokval(parser)))) {
1777 ast_value_delete(var);
1778 parseerror(parser, "global %s already declared here: %s:%i\n",
1779 parser_tokval(parser), ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line);
1783 if (localblock && parser_find_local(parser, parser_tokval(parser), parser->blocklocal)) {
1784 ast_value_delete(var);
1785 parseerror(parser, "local %s already declared here: %s:%i\n",
1786 parser_tokval(parser), ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line);
1791 if (!ast_value_set_name(var, parser_tokval(parser))) {
1792 parseerror(parser, "failed to set variable name\n");
1793 ast_value_delete(var);
1798 /* a function was defined */
1800 ast_value *proto = NULL;
1803 olddecl = parser_find_global(parser, parser_tokval(parser));
1805 olddecl = parser_find_local(parser, parser_tokval(parser), parser->blocklocal);
1808 /* we had a prototype */
1809 if (!ast_istype(olddecl, ast_value)) {
1810 /* theoretically not possible you think?
1816 parseerror(parser, "cannot declare a function with the same name as a vector's member: %s",
1817 parser_tokval(parser));
1818 ast_value_delete(var);
1822 proto = (ast_value*)olddecl;
1825 /* turn var into a value of TYPE_FUNCTION, with the old var
1828 fval = ast_value_new(ctx, var->name, TYPE_FUNCTION);
1829 func = ast_function_new(ctx, var->name, fval);
1830 if (!fval || !func) {
1831 ast_value_delete(var);
1832 if (fval) ast_value_delete(fval);
1833 if (func) ast_function_delete(func);
1837 fval->expression.next = (ast_expression*)var;
1838 MEM_VECTOR_MOVE(&var->expression, params, &fval->expression, params);
1840 /* we compare the type late here, but it's easier than
1841 * messing with the parameter-vector etc. earlier
1845 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)fval)) {
1846 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
1848 ast_ctx(proto).file, ast_ctx(proto).line);
1849 ast_function_delete(func);
1850 ast_value_delete(fval);
1853 /* copy over the parameter names */
1854 for (param = 0; param < fval->expression.params_count; ++param)
1855 ast_value_set_name(proto->expression.params[param], fval->expression.params[param]->name);
1857 /* now ditch the rest of the new data */
1858 ast_function_delete(func);
1859 ast_value_delete(fval);
1861 func = proto->constval.vfunc;
1866 if (!parser_t_functions_add(parser, func)) {
1867 ast_function_delete(func);
1868 ast_value_delete(fval);
1877 varent.name = util_strdup(var->name);
1878 varent.var = (ast_expression*)var;
1879 if (var->expression.vtype == TYPE_VECTOR)
1881 size_t len = strlen(varent.name);
1882 varentry_t vx, vy, vz;
1883 vx.var = (ast_expression*)ast_member_new(var->expression.node.context, (ast_expression*)var, 0);
1884 vy.var = (ast_expression*)ast_member_new(var->expression.node.context, (ast_expression*)var, 1);
1885 vz.var = (ast_expression*)ast_member_new(var->expression.node.context, (ast_expression*)var, 2);
1886 vx.name = (char*)mem_a(len+3);
1887 vy.name = (char*)mem_a(len+3);
1888 vz.name = (char*)mem_a(len+3);
1889 memcpy(vx.name, varent.name, len);
1890 memcpy(vy.name, varent.name, len);
1891 memcpy(vz.name, varent.name, len);
1892 vx.name[len] = vy.name[len] = vz.name[len] = '_';
1893 vx.name[len+1] = 'x';
1894 vy.name[len+1] = 'y';
1895 vz.name[len+1] = 'z';
1896 vx.name[len+2] = vy.name[len+2] = vz.name[len+2] = 0;
1899 (void)!parser_t_globals_add(parser, varent);
1900 (void)!parser_t_globals_add(parser, vx);
1901 (void)!parser_t_globals_add(parser, vy);
1902 (void)!parser_t_globals_add(parser, vz);
1904 (void)!parser_t_locals_add(parser, varent);
1905 (void)!parser_t_locals_add(parser, vx);
1906 (void)!parser_t_locals_add(parser, vy);
1907 (void)!parser_t_locals_add(parser, vz);
1908 if (!ast_block_locals_add(localblock, var) ||
1909 !ast_block_collect(localblock, vx.var) ||
1910 !ast_block_collect(localblock, vy.var) ||
1911 !ast_block_collect(localblock, vz.var))
1913 parser_pop_local(parser);
1914 parser_pop_local(parser);
1915 parser_pop_local(parser);
1916 parser_pop_local(parser);
1917 ast_value_delete(var);
1924 if ( (!localblock && !parser_t_globals_add(parser, varent)) ||
1925 ( localblock && !parser_t_locals_add(parser, varent)) )
1927 ast_value_delete(var);
1930 if (localblock && !ast_block_locals_add(localblock, var))
1932 parser_pop_local(parser);
1933 ast_value_delete(var);
1939 if (!parser_next(parser)) {
1940 ast_value_delete(var);
1944 if (parser->tok == ';') {
1945 if (!parser_next(parser))
1946 return parser->tok == TOKEN_EOF;
1950 if (parser->tok == ',') {
1955 if (parser->tok != '=') {
1956 parseerror(parser, "expected '=' or ';'");
1960 if (!parser_next(parser))
1963 if (parser->tok == '#') {
1965 parseerror(parser, "cannot declare builtins within functions");
1968 if (!isfunc || !func) {
1969 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
1972 if (!parser_next(parser)) {
1973 parseerror(parser, "expected builtin number");
1976 if (parser->tok != TOKEN_INTCONST) {
1977 parseerror(parser, "builtin number must be an integer constant");
1980 if (parser_token(parser)->constval.i <= 0) {
1981 parseerror(parser, "builtin number must be positive integer greater than zero");
1985 func->builtin = -parser_token(parser)->constval.i;
1987 if (!parser_next(parser))
1989 } else if (parser->tok == '{') {
1992 ast_function *old = parser->function;
1995 parseerror(parser, "cannot declare functions within functions");
1999 parser->function = func;
2000 block = parser_parse_block(parser);
2001 parser->function = old;
2006 if (!ast_function_blocks_add(func, block)) {
2007 ast_block_delete(block);
2011 if (parser->tok == ';')
2012 return parser_next(parser) || parser->tok == TOKEN_EOF;
2013 else if (opts_standard == COMPILER_QCC)
2014 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
2017 ast_expression *cexp;
2020 cexp = parser_expression_leave(parser, true);
2021 cval = (ast_value*)cexp;
2022 if (!ast_istype(cval, ast_value) || !cval->isconst)
2023 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
2026 var->isconst = true;
2027 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
2028 memset(&cval->constval, 0, sizeof(cval->constval));
2033 if (parser->tok == ',') {
2038 if (parser->tok != ';') {
2039 parseerror(parser, "missing semicolon");
2043 (void)parser_next(parser);
2049 static bool parser_do(parser_t *parser)
2051 if (parser->tok == TOKEN_TYPENAME)
2053 return parser_variable(parser, NULL);
2055 else if (parser->tok == TOKEN_KEYWORD)
2057 /* handle 'var' and 'const' */
2060 else if (parser->tok == '.')
2065 ast_expression *oldex;
2066 bool isfunc = false;
2068 lex_ctx ctx = parser_ctx(parser);
2071 /* entity-member declaration */
2072 if (!parser_next(parser) || parser->tok != TOKEN_TYPENAME) {
2073 parseerror(parser, "expected member variable definition");
2077 /* remember the base/return type */
2078 basetype = parser_token(parser)->constval.t;
2080 /* parse into the declaration */
2081 if (!parser_next(parser)) {
2082 parseerror(parser, "expected field def");
2086 /* parse the field type fully */
2087 typevar = var = parser_parse_type(parser, basetype, &isfunc);
2092 var = ast_value_copy(typevar);
2093 /* now the field name */
2094 if (parser->tok != TOKEN_IDENT) {
2095 parseerror(parser, "expected field name");
2100 /* check for an existing field
2101 * in original qc we also have to check for an existing
2102 * global named like the field
2104 if (opts_standard == COMPILER_QCC) {
2105 if (parser_find_global(parser, parser_tokval(parser))) {
2106 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
2114 fval = ast_value_new(ctx, var->name, TYPE_FUNCTION);
2116 ast_value_delete(var);
2119 fval->expression.next = (ast_expression*)var;
2120 MEM_VECTOR_MOVE(&var->expression, params, &fval->expression, params);
2124 /* turn it into a field */
2125 fld = ast_value_new(ctx, parser_tokval(parser), TYPE_FIELD);
2126 fld->expression.next = (ast_expression*)var;
2128 if ( (oldex = parser_find_field(parser, parser_tokval(parser)))) {
2129 if (ast_istype(oldex, ast_member)) {
2130 parseerror(parser, "cannot declare a field with the same name as a vector component, component %s has been declared here: %s:%i",
2131 parser_tokval(parser), ast_ctx(oldex).file, (int)ast_ctx(oldex).line);
2135 if (!ast_istype(oldex, ast_value)) {
2136 /* not possible / sanity check */
2137 parseerror(parser, "internal error: %s is not an ast_value", parser_tokval(parser));
2142 if (!ast_compare_type(oldex, (ast_expression*)fld)) {
2143 parseerror(parser, "field %s has previously been declared with a different type here: %s:%i",
2144 parser_tokval(parser), ast_ctx(oldex).file, (int)ast_ctx(oldex).line);
2148 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field %s has already been declared here: %s:%i",
2149 parser_tokval(parser), ast_ctx(oldex).file, (int)ast_ctx(oldex).line))
2160 varent.var = (ast_expression*)fld;
2161 varent.name = util_strdup(fld->name);
2162 (void)!parser_t_fields_add(parser, varent);
2164 if (var->expression.vtype == TYPE_VECTOR)
2166 /* create _x, _y and _z fields as well */
2168 varentry_t vx, vy, vz;
2170 len = strlen(varent.name);
2171 vx.var = (ast_expression*)ast_member_new(ast_ctx(fld), (ast_expression*)fld, 0);
2172 vy.var = (ast_expression*)ast_member_new(ast_ctx(fld), (ast_expression*)fld, 1);
2173 vz.var = (ast_expression*)ast_member_new(ast_ctx(fld), (ast_expression*)fld, 2);
2174 vx.name = (char*)mem_a(len+3);
2175 vy.name = (char*)mem_a(len+3);
2176 vz.name = (char*)mem_a(len+3);
2177 memcpy(vx.name, varent.name, len);
2178 memcpy(vy.name, varent.name, len);
2179 memcpy(vz.name, varent.name, len);
2180 vx.name[len] = vy.name[len] = vz.name[len] = '_';
2181 vx.name[len+1] = 'x';
2182 vy.name[len+1] = 'y';
2183 vz.name[len+1] = 'z';
2184 vx.name[len+2] = vy.name[len+2] = vz.name[len+2] = 0;
2185 (void)!parser_t_fields_add(parser, vx);
2186 (void)!parser_t_fields_add(parser, vy);
2187 (void)!parser_t_fields_add(parser, vz);
2191 if (!parser_next(parser)) {
2192 parseerror(parser, "expected semicolon or another field name");
2195 if (parser->tok == ';')
2197 if (parser->tok != ',' || !parser_next(parser)) {
2198 parseerror(parser, "expected semicolon or another field name");
2202 ast_delete(typevar);
2204 /* skip the semicolon */
2205 if (!parser_next(parser))
2206 return parser->tok == TOKEN_EOF;
2210 else if (parser->tok == '$')
2212 if (!parser_next(parser)) {
2213 parseerror(parser, "parse error");
2219 parseerror(parser, "unexpected token: %s", parser->lex->tok->value);
2225 static parser_t *parser;
2229 parser = (parser_t*)mem_a(sizeof(parser_t));
2233 memset(parser, 0, sizeof(*parser));
2237 bool parser_compile(const char *filename)
2239 parser->lex = lex_open(filename);
2241 printf("failed to open file \"%s\"\n", filename);
2245 /* initial lexer/parser state */
2246 parser->lex->flags.noops = true;
2248 if (parser_next(parser))
2250 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
2252 if (!parser_do(parser)) {
2253 if (parser->tok == TOKEN_EOF)
2254 parseerror(parser, "unexpected eof");
2255 else if (!parser->errors)
2256 parseerror(parser, "parse error\n");
2257 lex_close(parser->lex);
2264 lex_close(parser->lex);
2267 return !parser->errors;
2270 void parser_cleanup()
2273 for (i = 0; i < parser->functions_count; ++i) {
2274 ast_delete(parser->functions[i]);
2276 for (i = 0; i < parser->imm_vector_count; ++i) {
2277 ast_delete(parser->imm_vector[i]);
2279 for (i = 0; i < parser->imm_string_count; ++i) {
2280 ast_delete(parser->imm_string[i]);
2282 for (i = 0; i < parser->imm_float_count; ++i) {
2283 ast_delete(parser->imm_float[i]);
2285 for (i = 0; i < parser->fields_count; ++i) {
2286 ast_delete(parser->fields[i].var);
2287 mem_d(parser->fields[i].name);
2289 for (i = 0; i < parser->globals_count; ++i) {
2290 ast_delete(parser->globals[i].var);
2291 mem_d(parser->globals[i].name);
2293 MEM_VECTOR_CLEAR(parser, functions);
2294 MEM_VECTOR_CLEAR(parser, imm_vector);
2295 MEM_VECTOR_CLEAR(parser, imm_string);
2296 MEM_VECTOR_CLEAR(parser, imm_float);
2297 MEM_VECTOR_CLEAR(parser, globals);
2298 MEM_VECTOR_CLEAR(parser, fields);
2299 MEM_VECTOR_CLEAR(parser, locals);
2304 bool parser_finish(const char *output)
2309 if (!parser->errors)
2311 ir = ir_builder_new("gmqcc_out");
2313 printf("failed to allocate builder\n");
2317 for (i = 0; i < parser->imm_float_count; ++i) {
2318 if (!ast_global_codegen(parser->imm_float[i], ir)) {
2319 printf("failed to generate global %s\n", parser->imm_float[i]->name);
2320 ir_builder_delete(ir);
2324 for (i = 0; i < parser->imm_string_count; ++i) {
2325 if (!ast_global_codegen(parser->imm_string[i], ir)) {
2326 printf("failed to generate global %s\n", parser->imm_string[i]->name);
2327 ir_builder_delete(ir);
2331 for (i = 0; i < parser->imm_vector_count; ++i) {
2332 if (!ast_global_codegen(parser->imm_vector[i], ir)) {
2333 printf("failed to generate global %s\n", parser->imm_vector[i]->name);
2334 ir_builder_delete(ir);
2338 for (i = 0; i < parser->fields_count; ++i) {
2341 if (!ast_istype(parser->fields[i].var, ast_value))
2343 field = (ast_value*)parser->fields[i].var;
2344 isconst = field->isconst;
2345 field->isconst = false;
2346 if (!ast_global_codegen((ast_value*)field, ir)) {
2347 printf("failed to generate field %s\n", field->name);
2348 ir_builder_delete(ir);
2353 ast_expression *subtype;
2354 field->isconst = true;
2355 subtype = field->expression.next;
2356 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
2357 if (subtype->expression.vtype == TYPE_FIELD)
2358 ifld->fieldtype = subtype->expression.next->expression.vtype;
2359 else if (subtype->expression.vtype == TYPE_FUNCTION)
2360 ifld->outtype = subtype->expression.next->expression.vtype;
2361 (void)!ir_value_set_field(field->ir_v, ifld);
2364 for (i = 0; i < parser->globals_count; ++i) {
2365 if (!ast_istype(parser->globals[i].var, ast_value))
2367 if (!ast_global_codegen((ast_value*)(parser->globals[i].var), ir)) {
2368 printf("failed to generate global %s\n", parser->globals[i].name);
2369 ir_builder_delete(ir);
2373 for (i = 0; i < parser->functions_count; ++i) {
2374 if (!ast_function_codegen(parser->functions[i], ir)) {
2375 printf("failed to generate function %s\n", parser->functions[i]->name);
2376 ir_builder_delete(ir);
2379 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
2380 printf("failed to finalize function %s\n", parser->functions[i]->name);
2381 ir_builder_delete(ir);
2387 ir_builder_dump(ir, printf);
2389 if (!ir_builder_generate(ir, output)) {
2390 printf("*** failed to generate output file\n");
2391 ir_builder_delete(ir);
2395 ir_builder_delete(ir);
2399 printf("*** there were compile errors\n");