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_function *function;
24 MEM_VECTOR_MAKE(varentry_t, locals);
29 /* TYPE_FIELD -> parser_find_fields is used instead of find_var
30 * TODO: TYPE_VECTOR -> x, y and z are accepted in the gmqcc standard
31 * anything else: type error
36 MEM_VEC_FUNCTIONS(parser_t, varentry_t, globals)
37 MEM_VEC_FUNCTIONS(parser_t, varentry_t, fields)
38 MEM_VEC_FUNCTIONS(parser_t, ast_value*, imm_float)
39 MEM_VEC_FUNCTIONS(parser_t, ast_value*, imm_string)
40 MEM_VEC_FUNCTIONS(parser_t, ast_value*, imm_vector)
41 MEM_VEC_FUNCTIONS(parser_t, varentry_t, locals)
42 MEM_VEC_FUNCTIONS(parser_t, ast_function*, functions)
44 static void parser_pop_local(parser_t *parser);
45 static bool parser_variable(parser_t *parser, ast_block *localblock);
46 static ast_block* parser_parse_block(parser_t *parser);
47 static ast_expression* parser_parse_statement_or_block(parser_t *parser);
48 static ast_expression* parser_expression_leave(parser_t *parser, bool stopatcomma);
49 static ast_expression* parser_expression(parser_t *parser, bool stopatcomma);
51 void parseerror(parser_t *parser, const char *fmt, ...)
58 vprintmsg(LVL_ERROR, parser->lex->tok->ctx.file, parser->lex->tok->ctx.line, "parse error", fmt, ap);
64 /* returns true if it counts as an error */
65 bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
68 int lvl = LVL_WARNING;
70 if (!OPTS_WARN(warntype))
73 if (OPTS_WARN(WARN_ERROR)) {
79 vprintmsg(lvl, parser->lex->tok->ctx.file, parser->lex->tok->ctx.line, "warning", fmt, ap);
82 return OPTS_WARN(WARN_ERROR);
85 /**********************************************************************
86 * some maths used for constant folding
89 vector vec3_add(vector a, vector b)
98 vector vec3_sub(vector a, vector b)
107 qcfloat vec3_mulvv(vector a, vector b)
109 return (a.x * b.x + a.y * b.y + a.z * b.z);
112 vector vec3_mulvf(vector a, float b)
121 /**********************************************************************
125 bool parser_next(parser_t *parser)
127 /* lex_do kills the previous token */
128 parser->tok = lex_do(parser->lex);
129 if (parser->tok == TOKEN_EOF || parser->tok >= TOKEN_ERROR)
134 /* lift a token out of the parser so it's not destroyed by parser_next */
135 token *parser_lift(parser_t *parser)
137 token *tok = parser->lex->tok;
138 parser->lex->tok = NULL;
142 #define parser_tokval(p) (p->lex->tok->value)
143 #define parser_token(p) (p->lex->tok)
144 #define parser_ctx(p) (p->lex->tok->ctx)
146 ast_value* parser_const_float(parser_t *parser, double d)
150 for (i = 0; i < parser->imm_float_count; ++i) {
151 if (parser->imm_float[i]->constval.vfloat == d)
152 return parser->imm_float[i];
154 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_FLOAT);
156 out->constval.vfloat = d;
157 if (!parser_t_imm_float_add(parser, out)) {
158 ast_value_delete(out);
164 ast_value* parser_const_string(parser_t *parser, const char *str)
168 for (i = 0; i < parser->imm_string_count; ++i) {
169 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
170 return parser->imm_string[i];
172 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
174 out->constval.vstring = util_strdup(str);
175 if (!parser_t_imm_string_add(parser, out)) {
176 ast_value_delete(out);
182 ast_value* parser_const_vector(parser_t *parser, vector v)
186 for (i = 0; i < parser->imm_vector_count; ++i) {
187 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
188 return parser->imm_vector[i];
190 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
192 out->constval.vvec = v;
193 if (!parser_t_imm_vector_add(parser, out)) {
194 ast_value_delete(out);
200 ast_expression* parser_find_field(parser_t *parser, const char *name)
203 for (i = 0; i < parser->fields_count; ++i) {
204 if (!strcmp(parser->fields[i].name, name))
205 return parser->fields[i].var;
210 ast_expression* parser_find_global(parser_t *parser, const char *name)
213 for (i = 0; i < parser->globals_count; ++i) {
214 if (!strcmp(parser->globals[i].name, name))
215 return parser->globals[i].var;
220 ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto)
224 for (i = parser->locals_count; i > upto;) {
226 if (!strcmp(parser->locals[i].name, name))
227 return parser->locals[i].var;
229 if (!parser->function)
231 fun = parser->function->vtype;
232 for (i = 0; i < fun->expression.params_count; ++i) {
233 if (!strcmp(fun->expression.params[i]->name, name))
234 return (ast_expression*)(fun->expression.params[i]);
239 ast_expression* parser_find_var(parser_t *parser, const char *name)
242 v = parser_find_local(parser, name, 0);
243 if (!v) v = parser_find_global(parser, name);
248 MEM_VECTOR_MAKE(ast_value*, p);
250 MEM_VEC_FUNCTIONS(paramlist_t, ast_value*, p)
252 static ast_value *parser_parse_type(parser_t *parser, int basetype, bool *isfunc)
256 lex_ctx ctx = parser_ctx(parser);
257 int vtype = basetype;
261 MEM_VECTOR_INIT(¶ms, p);
265 if (parser->tok == '(') {
271 if (!parser_next(parser))
274 if (parser->tok == ')')
277 temptype = parser_token(parser)->constval.t;
278 if (!parser_next(parser))
281 param = parser_parse_type(parser, temptype, &dummy);
287 if (parser->tok == TOKEN_IDENT) {
288 /* named parameter */
289 if (!ast_value_set_name(param, parser_tokval(parser)))
291 if (!parser_next(parser))
295 if (!paramlist_t_p_add(¶ms, param)) {
296 parseerror(parser, "Out of memory while parsing typename");
300 if (parser->tok == ',')
302 if (parser->tok == ')')
304 parseerror(parser, "Unexpected token");
307 if (!parser_next(parser))
311 var = ast_value_new(ctx, "<unnamed>", vtype);
314 MEM_VECTOR_MOVE(¶ms, p, &var->expression, params);
317 for (i = 0; i < params.p_count; ++i)
318 ast_value_delete(params.p[i]);
319 MEM_VECTOR_CLEAR(¶ms, p);
325 size_t etype; /* 0 = expression, others are operators */
329 ast_block *block; /* for commas and function calls */
334 MEM_VECTOR_MAKE(sy_elem, out);
335 MEM_VECTOR_MAKE(sy_elem, ops);
337 MEM_VEC_FUNCTIONS(shunt, sy_elem, out)
338 MEM_VEC_FUNCTIONS(shunt, sy_elem, ops)
340 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
350 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
353 e.out = (ast_expression*)v;
360 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
362 e.etype = 1 + (op - operators);
370 static sy_elem syparen(lex_ctx ctx, int p, size_t off) {
382 # define DEBUGSHUNTDO(x) x
384 # define DEBUGSHUNTDO(x)
387 static bool parser_sy_pop(parser_t *parser, shunt *sy)
391 ast_expression *out = NULL;
392 ast_expression *exprs[3];
393 ast_block *blocks[3];
394 ast_value *asvalue[3];
396 qcint generated_op = 0;
398 if (!sy->ops_count) {
399 parseerror(parser, "internal error: missing operator");
403 if (sy->ops[sy->ops_count-1].paren) {
404 parseerror(parser, "unmatched parenthesis");
408 op = &operators[sy->ops[sy->ops_count-1].etype - 1];
409 ctx = sy->ops[sy->ops_count-1].ctx;
411 DEBUGSHUNTDO(printf("apply %s\n", op->op));
413 if (sy->out_count < op->operands) {
414 parseerror(parser, "internal error: not enough operands: %i", sy->out_count);
420 sy->out_count -= op->operands;
421 for (i = 0; i < op->operands; ++i) {
422 exprs[i] = sy->out[sy->out_count+i].out;
423 blocks[i] = sy->out[sy->out_count+i].block;
424 asvalue[i] = (ast_value*)exprs[i];
427 if (blocks[0] && !blocks[0]->exprs_count && op->id != opid1(',')) {
428 parseerror(parser, "internal error: operator cannot be applied on empty blocks");
432 #define NotSameType(T) \
433 (exprs[0]->expression.vtype != exprs[1]->expression.vtype || \
434 exprs[0]->expression.vtype != T)
435 #define CanConstFold(A, B) \
436 (ast_istype((A), ast_value) && ast_istype((B), ast_value) && \
437 ((ast_value*)(A))->isconst && ((ast_value*)(B))->isconst)
438 #define ConstV(i) (asvalue[(i)]->constval.vvec)
439 #define ConstF(i) (asvalue[(i)]->constval.vfloat)
443 parseerror(parser, "internal error: unhandled operand");
447 if (exprs[0]->expression.vtype == TYPE_ENTITY) {
448 if (exprs[1]->expression.vtype != TYPE_FIELD) {
449 parseerror(parser, "type error: right hand of member-operand should be an entity-field");
452 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
454 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
455 parseerror(parser, "internal error: vector access is not supposed to be handled at this point");
459 parseerror(parser, "type error: member-of operator on something that is not an entity or vector");
466 if (!ast_block_exprs_add(blocks[0], exprs[1]))
469 blocks[0] = ast_block_new(ctx);
470 if (!ast_block_exprs_add(blocks[0], exprs[0]) ||
471 !ast_block_exprs_add(blocks[0], exprs[1]))
476 if (!ast_block_set_type(blocks[0], exprs[1]))
479 sy->out[sy->out_count++] = syblock(ctx, blocks[0]);
483 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
484 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
486 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
487 type_name[exprs[0]->expression.vtype],
488 type_name[exprs[1]->expression.vtype]);
491 switch (exprs[0]->expression.vtype) {
493 if (CanConstFold(exprs[0], exprs[1]))
495 out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
498 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
501 if (CanConstFold(exprs[0], exprs[1]))
502 out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
504 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
507 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
508 type_name[exprs[0]->expression.vtype],
509 type_name[exprs[1]->expression.vtype]);
514 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
515 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
517 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
518 type_name[exprs[1]->expression.vtype],
519 type_name[exprs[0]->expression.vtype]);
522 switch (exprs[0]->expression.vtype) {
524 if (CanConstFold(exprs[0], exprs[1]))
525 out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
527 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
530 if (CanConstFold(exprs[0], exprs[1]))
531 out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
533 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
536 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
537 type_name[exprs[1]->expression.vtype],
538 type_name[exprs[0]->expression.vtype]);
543 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
544 exprs[0]->expression.vtype != TYPE_VECTOR &&
545 exprs[0]->expression.vtype != TYPE_FLOAT &&
546 exprs[1]->expression.vtype != TYPE_VECTOR &&
547 exprs[1]->expression.vtype != TYPE_FLOAT)
549 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
550 type_name[exprs[1]->expression.vtype],
551 type_name[exprs[0]->expression.vtype]);
554 switch (exprs[0]->expression.vtype) {
556 if (exprs[1]->expression.vtype == TYPE_VECTOR)
558 if (CanConstFold(exprs[0], exprs[1]))
559 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
561 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
565 if (CanConstFold(exprs[0], exprs[1]))
566 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
568 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
572 if (exprs[1]->expression.vtype == TYPE_FLOAT)
574 if (CanConstFold(exprs[0], exprs[1]))
575 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
577 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
581 if (CanConstFold(exprs[0], exprs[1]))
582 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
584 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
588 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
589 type_name[exprs[1]->expression.vtype],
590 type_name[exprs[0]->expression.vtype]);
595 if (NotSameType(TYPE_FLOAT)) {
596 parseerror(parser, "invalid types used in expression: cannot divide types %s and %s",
597 type_name[exprs[0]->expression.vtype],
598 type_name[exprs[1]->expression.vtype]);
601 if (CanConstFold(exprs[0], exprs[1]))
602 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
604 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
608 parseerror(parser, "qc does not have a modulo operator");
612 if (NotSameType(TYPE_FLOAT)) {
613 parseerror(parser, "invalid types used in expression: cannot perform bit operations between types %s and %s",
614 type_name[exprs[0]->expression.vtype],
615 type_name[exprs[1]->expression.vtype]);
618 if (CanConstFold(exprs[0], exprs[1]))
619 out = (ast_expression*)parser_const_float(parser,
620 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
621 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
623 out = (ast_expression*)ast_binary_new(ctx,
624 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
628 parseerror(parser, "TODO: bitxor");
633 case opid3('<','<','='):
634 case opid3('>','>','='):
635 parseerror(parser, "TODO: shifts");
639 generated_op += 1; /* INSTR_OR */
641 generated_op += INSTR_AND;
642 if (NotSameType(TYPE_FLOAT)) {
643 parseerror(parser, "invalid types used in expression: cannot perform logical operations between types %s and %s",
644 type_name[exprs[0]->expression.vtype],
645 type_name[exprs[1]->expression.vtype]);
646 parseerror(parser, "TODO: logical ops for arbitrary types using INSTR_NOT");
647 parseerror(parser, "TODO: optional early out");
650 if (opts_standard == COMPILER_GMQCC)
651 printf("TODO: early out logic\n");
652 if (CanConstFold(exprs[0], exprs[1]))
653 out = (ast_expression*)parser_const_float(parser,
654 (generated_op == INSTR_OR ? (ConstF(0) || ConstF(1)) : (ConstF(0) && ConstF(1))));
656 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
660 generated_op += 1; /* INSTR_GT */
662 generated_op += 1; /* INSTR_LT */
663 case opid2('>', '='):
664 generated_op += 1; /* INSTR_GE */
665 case opid2('<', '='):
666 generated_op += INSTR_LE;
667 if (NotSameType(TYPE_FLOAT)) {
668 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
669 type_name[exprs[0]->expression.vtype],
670 type_name[exprs[1]->expression.vtype]);
673 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
675 case opid2('!', '='):
676 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
677 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
678 type_name[exprs[0]->expression.vtype],
679 type_name[exprs[1]->expression.vtype]);
682 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
684 case opid2('=', '='):
685 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
686 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
687 type_name[exprs[0]->expression.vtype],
688 type_name[exprs[1]->expression.vtype]);
691 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
695 if (ast_istype(exprs[0], ast_entfield))
696 assignop = type_storep_instr[exprs[0]->expression.vtype];
698 assignop = type_store_instr[exprs[0]->expression.vtype];
699 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
703 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
704 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
706 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
707 type_name[exprs[0]->expression.vtype],
708 type_name[exprs[1]->expression.vtype]);
711 if (ast_istype(exprs[0], ast_entfield))
712 assignop = type_storep_instr[exprs[0]->expression.vtype];
714 assignop = type_store_instr[exprs[0]->expression.vtype];
715 switch (exprs[0]->expression.vtype) {
717 out = (ast_expression*)ast_binstore_new(ctx, assignop,
718 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
722 out = (ast_expression*)ast_binstore_new(ctx, assignop,
723 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
727 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
728 type_name[exprs[0]->expression.vtype],
729 type_name[exprs[1]->expression.vtype]);
737 parseerror(parser, "failed to apply operand %s", op->op);
741 DEBUGSHUNTDO(printf("applied %s\n", op->op));
742 sy->out[sy->out_count++] = syexp(ctx, out);
746 static bool parser_close_call(parser_t *parser, shunt *sy)
748 /* was a function call */
756 fid = sy->ops[sy->ops_count].off;
758 /* out[fid] is the function
759 * everything above is parameters...
761 * 1 params = ast_expression
765 if (sy->out_count < 1 || sy->out_count <= fid) {
766 parseerror(parser, "internal error: function call needs function and parameter list...");
770 fun = sy->out[fid].out;
772 call = ast_call_new(sy->ops[sy->ops_count].ctx, fun);
774 parseerror(parser, "out of memory");
778 if (fid+1 == sy->out_count) {
781 } else if (fid+2 == sy->out_count) {
784 params = sy->out[sy->out_count].block;
788 if (!ast_call_params_add(call, sy->out[sy->out_count].out)) {
789 ast_delete(sy->out[sy->out_count].out);
790 parseerror(parser, "out of memory");
794 paramcount = params->exprs_count;
795 MEM_VECTOR_MOVE(params, exprs, call, params);
799 parseerror(parser, "invalid function call");
803 /* overwrite fid, the function, with a call */
804 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
806 if (fun->expression.vtype != TYPE_FUNCTION) {
807 parseerror(parser, "not a function");
811 if (!fun->expression.next) {
812 parseerror(parser, "could not determine function return type");
815 if (fun->expression.params_count != paramcount) {
816 parseerror(parser, "expected %i parameters, got %i", (int)fun->expression.params_count, paramcount);
824 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
826 if (!sy->ops_count) {
827 parseerror(parser, "unmatched closing paren");
830 if (sy->ops[sy->ops_count-1].paren == 1) {
831 parseerror(parser, "empty parenthesis expression");
834 while (sy->ops_count) {
835 if (sy->ops[sy->ops_count-1].paren == 'f') {
836 if (!parser_close_call(parser, sy))
840 if (sy->ops[sy->ops_count-1].paren == 1) {
842 return !functions_only;
844 if (!parser_sy_pop(parser, sy))
850 static ast_expression* parser_expression_leave(parser_t *parser, bool stopatcomma)
852 ast_expression *expr = NULL;
855 bool gotmemberof = false;
857 /* count the parens because an if starts with one, so the
858 * end of a condition is an unmatched closing paren
862 MEM_VECTOR_INIT(&sy, out);
863 MEM_VECTOR_INIT(&sy, ops);
870 parser->memberof = 0;
873 bool nextwant = true;
874 if (parser->tok == TOKEN_IDENT)
878 if (opts_standard == COMPILER_GMQCC)
880 if (parser->memberof == TYPE_ENTITY)
881 var = parser_find_field(parser, parser_tokval(parser));
882 else if (parser->memberof == TYPE_VECTOR)
884 parseerror(parser, "TODO: implement effective vector member access");
887 else if (parser->memberof) {
888 parseerror(parser, "namespace for member not found");
892 var = parser_find_var(parser, parser_tokval(parser));
894 var = parser_find_var(parser, parser_tokval(parser));
896 var = parser_find_field(parser, parser_tokval(parser));
899 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
902 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), var))) {
903 parseerror(parser, "out of memory");
906 DEBUGSHUNTDO(printf("push %s\n", parser_tokval(parser)));
908 else if (parser->tok == TOKEN_FLOATCONST) {
909 ast_value *val = parser_const_float(parser, (parser_token(parser)->constval.f));
912 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
913 parseerror(parser, "out of memory");
916 DEBUGSHUNTDO(printf("push %g\n", parser_token(parser)->constval.f));
918 else if (parser->tok == TOKEN_INTCONST) {
919 ast_value *val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
922 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
923 parseerror(parser, "out of memory");
926 DEBUGSHUNTDO(printf("push %i\n", parser_token(parser)->constval.i));
928 else if (parser->tok == TOKEN_STRINGCONST) {
929 ast_value *val = parser_const_string(parser, parser_tokval(parser));
932 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
933 parseerror(parser, "out of memory");
936 DEBUGSHUNTDO(printf("push string\n"));
938 else if (parser->tok == TOKEN_VECTORCONST) {
939 ast_value *val = parser_const_vector(parser, parser_token(parser)->constval.v);
942 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
943 parseerror(parser, "out of memory");
946 DEBUGSHUNTDO(printf("push '%g %g %g'\n",
947 parser_token(parser)->constval.v.x,
948 parser_token(parser)->constval.v.y,
949 parser_token(parser)->constval.v.z));
951 else if (parser->tok == '(') {
953 nextwant = false; /* not expecting an operator next */
954 if (!shunt_ops_add(&sy, syparen(parser_ctx(parser), 1, 0))) {
955 parseerror(parser, "out of memory");
958 DEBUGSHUNTDO(printf("push (\n"));
960 else if (parser->tok == ')') {
961 DEBUGSHUNTDO(printf("do[nop] )\n"));
965 /* allowed for function calls */
966 if (!parser_close_paren(parser, &sy, true))
970 /* TODO: prefix operators */
971 parseerror(parser, "expected statement");
975 parser->lex->flags.noops = !wantop;
977 bool nextwant = false;
978 if (parser->tok == '(') {
979 DEBUGSHUNTDO(printf("push (\n"));
981 /* we expected an operator, this is the function-call operator */
982 if (!shunt_ops_add(&sy, syparen(parser_ctx(parser), 'f', sy.out_count-1))) {
983 parseerror(parser, "out of memory");
987 else if (parser->tok == ')') {
988 DEBUGSHUNTDO(printf("do[op] )\n"));
992 /* we do expect an operator next */
993 /* closing an opening paren */
994 if (!parser_close_paren(parser, &sy, false))
998 else if (parser->tok != TOKEN_OPERATOR) {
999 parseerror(parser, "expected operator or end of statement");
1003 /* classify the operator */
1004 /* TODO: suffix operators */
1005 const oper_info *op;
1006 const oper_info *olast = NULL;
1008 for (o = 0; o < operator_count; ++o) {
1009 if (!(operators[o].flags & OP_PREFIX) &&
1010 !(operators[o].flags & OP_SUFFIX) && /* remove this */
1011 !strcmp(parser_tokval(parser), operators[o].op))
1016 if (o == operator_count) {
1017 /* no operator found... must be the end of the statement */
1020 /* found an operator */
1023 /* when declaring variables, a comma starts a new variable */
1024 if (op->id == opid1(',') && !parens && stopatcomma)
1027 if (op->id == opid1('.')) {
1028 /* for gmqcc standard: open up the namespace of the previous type */
1029 ast_expression *prevex = sy.out[sy.out_count-1].out;
1031 parseerror(parser, "unexpected member operator");
1034 if (prevex->expression.vtype == TYPE_ENTITY)
1035 parser->memberof = TYPE_ENTITY;
1036 else if (prevex->expression.vtype == TYPE_VECTOR)
1037 parser->memberof = TYPE_VECTOR;
1039 parseerror(parser, "type error: type has no members");
1045 if (sy.ops_count && !sy.ops[sy.ops_count-1].paren)
1046 olast = &operators[sy.ops[sy.ops_count-1].etype-1];
1049 (op->prec < olast->prec) ||
1050 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1052 if (!parser_sy_pop(parser, &sy))
1054 if (sy.ops_count && !sy.ops[sy.ops_count-1].paren)
1055 olast = &operators[sy.ops[sy.ops_count-1].etype-1];
1060 DEBUGSHUNTDO(printf("push operator %s\n", op->op));
1061 if (!shunt_ops_add(&sy, syop(parser_ctx(parser), op)))
1065 parser->lex->flags.noops = !wantop;
1067 if (!parser_next(parser)) {
1070 if (parser->tok == ';') {
1075 while (sy.ops_count) {
1076 if (!parser_sy_pop(parser, &sy))
1080 parser->lex->flags.noops = true;
1081 if (!sy.out_count) {
1082 parseerror(parser, "empty expression");
1085 expr = sy.out[0].out;
1086 MEM_VECTOR_CLEAR(&sy, out);
1087 MEM_VECTOR_CLEAR(&sy, ops);
1088 DEBUGSHUNTDO(printf("shut done\n"));
1092 parser->lex->flags.noops = true;
1093 MEM_VECTOR_CLEAR(&sy, out);
1094 MEM_VECTOR_CLEAR(&sy, ops);
1098 static ast_expression* parser_expression(parser_t *parser, bool stopatcomma)
1100 ast_expression *e = parser_expression_leave(parser, stopatcomma);
1103 if (!parser_next(parser)) {
1110 static bool parser_parse_if(parser_t *parser, ast_block *block, ast_expression **out)
1113 ast_expression *cond, *ontrue, *onfalse = NULL;
1115 lex_ctx ctx = parser_ctx(parser);
1117 /* skip the 'if' and check for opening paren */
1118 if (!parser_next(parser) || parser->tok != '(') {
1119 parseerror(parser, "expected 'if' condition in parenthesis");
1122 /* parse into the expression */
1123 if (!parser_next(parser)) {
1124 parseerror(parser, "expected 'if' condition after opening paren");
1127 /* parse the condition */
1128 cond = parser_expression_leave(parser, false);
1132 if (parser->tok != ')') {
1133 parseerror(parser, "expected closing paren after 'if' condition");
1137 /* parse into the 'then' branch */
1138 if (!parser_next(parser)) {
1139 parseerror(parser, "expected statement for on-true branch of 'if'");
1143 ontrue = parser_parse_statement_or_block(parser);
1148 /* check for an else */
1149 if (!strcmp(parser_tokval(parser), "else")) {
1150 /* parse into the 'else' branch */
1151 if (!parser_next(parser)) {
1152 parseerror(parser, "expected on-false branch after 'else'");
1157 onfalse = parser_parse_statement_or_block(parser);
1165 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
1166 *out = (ast_expression*)ifthen;
1170 static bool parser_parse_while(parser_t *parser, ast_block *block, ast_expression **out)
1173 ast_expression *cond, *ontrue;
1175 lex_ctx ctx = parser_ctx(parser);
1177 /* skip the 'while' and check for opening paren */
1178 if (!parser_next(parser) || parser->tok != '(') {
1179 parseerror(parser, "expected 'while' condition in parenthesis");
1182 /* parse into the expression */
1183 if (!parser_next(parser)) {
1184 parseerror(parser, "expected 'while' condition after opening paren");
1187 /* parse the condition */
1188 cond = parser_expression_leave(parser, false);
1192 if (parser->tok != ')') {
1193 parseerror(parser, "expected closing paren after 'while' condition");
1197 /* parse into the 'then' branch */
1198 if (!parser_next(parser)) {
1199 parseerror(parser, "expected while-loop body");
1203 ontrue = parser_parse_statement_or_block(parser);
1209 aloop = ast_loop_new(ctx, NULL, cond, NULL, NULL, ontrue);
1210 *out = (ast_expression*)aloop;
1214 static bool parser_parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
1217 ast_expression *cond, *ontrue;
1219 lex_ctx ctx = parser_ctx(parser);
1221 /* skip the 'do' and get the body */
1222 if (!parser_next(parser)) {
1223 parseerror(parser, "expected loop body");
1226 ontrue = parser_parse_statement_or_block(parser);
1230 /* expect the "while" */
1231 if (parser->tok != TOKEN_KEYWORD ||
1232 strcmp(parser_tokval(parser), "while"))
1234 parseerror(parser, "expected 'while' and condition");
1239 /* skip the 'while' and check for opening paren */
1240 if (!parser_next(parser) || parser->tok != '(') {
1241 parseerror(parser, "expected 'while' condition in parenthesis");
1245 /* parse into the expression */
1246 if (!parser_next(parser)) {
1247 parseerror(parser, "expected 'while' condition after opening paren");
1251 /* parse the condition */
1252 cond = parser_expression_leave(parser, false);
1256 if (parser->tok != ')') {
1257 parseerror(parser, "expected closing paren after 'while' condition");
1263 if (!parser_next(parser) || parser->tok != ';') {
1264 parseerror(parser, "expected semicolon after condition");
1270 if (!parser_next(parser)) {
1271 parseerror(parser, "parse error");
1277 aloop = ast_loop_new(ctx, NULL, NULL, cond, NULL, ontrue);
1278 *out = (ast_expression*)aloop;
1282 static bool parser_parse_for(parser_t *parser, ast_block *block, ast_expression **out)
1285 ast_expression *initexpr, *cond, *increment, *ontrue;
1286 size_t oldblocklocal;
1288 lex_ctx ctx = parser_ctx(parser);
1290 oldblocklocal = parser->blocklocal;
1291 parser->blocklocal = parser->locals_count;
1298 /* skip the 'while' and check for opening paren */
1299 if (!parser_next(parser) || parser->tok != '(') {
1300 parseerror(parser, "expected 'for' expressions in parenthesis");
1303 /* parse into the expression */
1304 if (!parser_next(parser)) {
1305 parseerror(parser, "expected 'for' initializer after opening paren");
1309 if (parser->tok == TOKEN_TYPENAME) {
1310 if (opts_standard != COMPILER_GMQCC) {
1311 if (parsewarning(parser, WARN_EXTENSIONS,
1312 "current standard does not allow variable declarations in for-loop initializers"))
1316 parseerror(parser, "TODO: assignment of new variables to be non-const");
1318 if (!parser_variable(parser, block))
1321 else if (parser->tok != ';')
1323 initexpr = parser_expression_leave(parser, false);
1328 /* move on to condition */
1329 if (parser->tok != ';') {
1330 parseerror(parser, "expected semicolon after for-loop initializer");
1333 if (!parser_next(parser)) {
1334 parseerror(parser, "expected for-loop condition");
1338 /* parse the condition */
1339 if (parser->tok != ';') {
1340 cond = parser_expression_leave(parser, false);
1345 /* move on to incrementor */
1346 if (parser->tok != ';') {
1347 parseerror(parser, "expected semicolon after for-loop initializer");
1350 if (!parser_next(parser)) {
1351 parseerror(parser, "expected for-loop condition");
1355 /* parse the incrementor */
1356 if (parser->tok != ')') {
1357 increment = parser_expression_leave(parser, false);
1363 if (parser->tok != ')') {
1364 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
1367 /* parse into the 'then' branch */
1368 if (!parser_next(parser)) {
1369 parseerror(parser, "expected for-loop body");
1372 ontrue = parser_parse_statement_or_block(parser);
1377 aloop = ast_loop_new(ctx, initexpr, cond, NULL, increment, ontrue);
1378 *out = (ast_expression*)aloop;
1380 while (parser->locals_count > parser->blocklocal)
1381 parser_pop_local(parser);
1382 parser->blocklocal = oldblocklocal;
1385 if (initexpr) ast_delete(initexpr);
1386 if (cond) ast_delete(cond);
1387 if (increment) ast_delete(increment);
1388 while (parser->locals_count > parser->blocklocal)
1389 parser_pop_local(parser);
1390 parser->blocklocal = oldblocklocal;
1394 static bool parser_parse_statement(parser_t *parser, ast_block *block, ast_expression **out)
1396 if (parser->tok == TOKEN_TYPENAME)
1398 /* local variable */
1400 parseerror(parser, "cannot declare a variable from here");
1403 if (opts_standard == COMPILER_QCC) {
1404 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
1407 if (!parser_variable(parser, block))
1412 else if (parser->tok == TOKEN_KEYWORD)
1414 if (!strcmp(parser_tokval(parser), "local"))
1417 parseerror(parser, "cannot declare a local variable here");
1420 if (!parser_next(parser)) {
1421 parseerror(parser, "expected variable declaration");
1424 if (!parser_variable(parser, block))
1429 else if (!strcmp(parser_tokval(parser), "return"))
1431 ast_expression *exp = NULL;
1432 ast_return *ret = NULL;
1433 ast_value *expected = parser->function->vtype;
1435 if (!parser_next(parser)) {
1436 parseerror(parser, "expected return expression");
1440 if (parser->tok != ';') {
1441 exp = parser_expression(parser, false);
1445 if (exp->expression.vtype != expected->expression.next->expression.vtype) {
1446 parseerror(parser, "return with invalid expression");
1449 ret = ast_return_new(exp->expression.node.context, exp);
1455 *out = (ast_expression*)ret;
1456 } else if (!parser_next(parser)) {
1457 parseerror(parser, "expected semicolon");
1458 if (expected->expression.next->expression.vtype != TYPE_VOID) {
1459 parseerror(parser, "return without value");
1464 else if (!strcmp(parser_tokval(parser), "if"))
1466 return parser_parse_if(parser, block, out);
1468 else if (!strcmp(parser_tokval(parser), "while"))
1470 return parser_parse_while(parser, block, out);
1472 else if (!strcmp(parser_tokval(parser), "do"))
1474 return parser_parse_dowhile(parser, block, out);
1476 else if (!strcmp(parser_tokval(parser), "for"))
1478 if (opts_standard == COMPILER_QCC) {
1479 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
1482 return parser_parse_for(parser, block, out);
1484 parseerror(parser, "Unexpected keyword");
1487 else if (parser->tok == '{')
1490 inner = parser_parse_block(parser);
1493 *out = (ast_expression*)inner;
1498 ast_expression *exp = parser_expression(parser, false);
1506 static void parser_pop_local(parser_t *parser)
1508 parser->locals_count--;
1509 mem_d(parser->locals[parser->locals_count].name);
1512 static ast_block* parser_parse_block(parser_t *parser)
1514 size_t oldblocklocal;
1515 ast_block *block = NULL;
1517 oldblocklocal = parser->blocklocal;
1518 parser->blocklocal = parser->locals_count;
1520 if (!parser_next(parser)) { /* skip the '{' */
1521 parseerror(parser, "expected function body");
1525 block = ast_block_new(parser_ctx(parser));
1527 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
1529 ast_expression *expr;
1530 if (parser->tok == '}')
1533 if (!parser_parse_statement(parser, block, &expr)) {
1534 ast_block_delete(block);
1540 if (!ast_block_exprs_add(block, expr)) {
1542 ast_block_delete(block);
1548 if (parser->tok != '}') {
1549 ast_block_delete(block);
1552 (void)parser_next(parser);
1556 while (parser->locals_count > parser->blocklocal)
1557 parser_pop_local(parser);
1558 parser->blocklocal = oldblocklocal;
1559 /* unroll the local vector */
1563 static ast_expression* parser_parse_statement_or_block(parser_t *parser)
1565 ast_expression *expr;
1566 if (parser->tok == '{')
1567 return (ast_expression*)parser_parse_block(parser);
1568 if (!parser_parse_statement(parser, NULL, &expr))
1573 static bool parser_variable(parser_t *parser, ast_block *localblock)
1575 bool isfunc = false;
1576 ast_function *func = NULL;
1580 ast_expression *olddecl;
1582 int basetype = parser_token(parser)->constval.t;
1586 if (!parser_next(parser)) { /* skip basetype or comma */
1587 parseerror(parser, "expected variable declaration");
1594 ctx = parser_ctx(parser);
1595 var = parser_parse_type(parser, basetype, &isfunc);
1600 if (parser->tok != TOKEN_IDENT) {
1601 parseerror(parser, "expected variable name\n");
1606 if (!localblock && (olddecl = parser_find_global(parser, parser_tokval(parser)))) {
1607 ast_value_delete(var);
1608 parseerror(parser, "global %s already declared here: %s:%i\n",
1609 parser_tokval(parser), ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line);
1613 if (localblock && parser_find_local(parser, parser_tokval(parser), parser->blocklocal)) {
1614 ast_value_delete(var);
1615 parseerror(parser, "local %s already declared here: %s:%i\n",
1616 parser_tokval(parser), ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line);
1621 if (!ast_value_set_name(var, parser_tokval(parser))) {
1622 parseerror(parser, "failed to set variable name\n");
1623 ast_value_delete(var);
1628 /* a function was defined */
1630 ast_value *proto = NULL;
1633 olddecl = parser_find_global(parser, parser_tokval(parser));
1635 olddecl = parser_find_local(parser, parser_tokval(parser), parser->blocklocal);
1638 /* we had a prototype */
1639 if (!ast_istype(olddecl, ast_value)) {
1640 /* theoretically not possible you think?
1646 parseerror(parser, "cannot declare a function with the same name as a vector's member: %s",
1647 parser_tokval(parser));
1648 ast_value_delete(var);
1652 proto = (ast_value*)olddecl;
1655 /* turn var into a value of TYPE_FUNCTION, with the old var
1658 fval = ast_value_new(ctx, var->name, TYPE_FUNCTION);
1659 func = ast_function_new(ctx, var->name, fval);
1660 if (!fval || !func) {
1661 ast_value_delete(var);
1662 if (fval) ast_value_delete(fval);
1663 if (func) ast_function_delete(func);
1667 fval->expression.next = (ast_expression*)var;
1668 MEM_VECTOR_MOVE(&var->expression, params, &fval->expression, params);
1670 /* we compare the type late here, but it's easier than
1671 * messing with the parameter-vector etc. earlier
1674 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)fval)) {
1675 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
1677 ast_ctx(proto).file, ast_ctx(proto).line);
1678 ast_function_delete(func);
1679 ast_value_delete(fval);
1682 ast_function_delete(func);
1683 ast_value_delete(fval);
1685 func = var->constval.vfunc;
1689 if (!parser_t_functions_add(parser, func)) {
1690 ast_function_delete(func);
1691 ast_value_delete(fval);
1699 varent.name = util_strdup(var->name);
1700 varent.var = (ast_expression*)var;
1701 if (var->expression.vtype == TYPE_VECTOR)
1703 size_t len = strlen(varent.name);
1704 varentry_t vx, vy, vz;
1705 vx.var = (ast_expression*)ast_member_new(var->expression.node.context, (ast_expression*)var, 0);
1706 vy.var = (ast_expression*)ast_member_new(var->expression.node.context, (ast_expression*)var, 1);
1707 vz.var = (ast_expression*)ast_member_new(var->expression.node.context, (ast_expression*)var, 2);
1708 vx.name = (char*)mem_a(len+3);
1709 vy.name = (char*)mem_a(len+3);
1710 vz.name = (char*)mem_a(len+3);
1711 memcpy(vx.name, varent.name, len);
1712 memcpy(vy.name, varent.name, len);
1713 memcpy(vz.name, varent.name, len);
1714 vx.name[len] = vy.name[len] = vz.name[len] = '_';
1715 vx.name[len+1] = 'x';
1716 vy.name[len+1] = 'y';
1717 vz.name[len+1] = 'z';
1718 vx.name[len+2] = vy.name[len+2] = vz.name[len+2] = 0;
1721 (void)!parser_t_globals_add(parser, varent);
1722 (void)!parser_t_globals_add(parser, vx);
1723 (void)!parser_t_globals_add(parser, vy);
1724 (void)!parser_t_globals_add(parser, vz);
1726 (void)!parser_t_locals_add(parser, varent);
1727 (void)!parser_t_locals_add(parser, vx);
1728 (void)!parser_t_locals_add(parser, vy);
1729 (void)!parser_t_locals_add(parser, vz);
1734 if ( (!localblock && !parser_t_globals_add(parser, varent)) ||
1735 ( localblock && !parser_t_locals_add(parser, varent)) )
1737 ast_value_delete(var);
1741 if (localblock && !ast_block_locals_add(localblock, var))
1743 parser_pop_local(parser);
1744 ast_value_delete(var);
1748 if (!parser_next(parser)) {
1749 ast_value_delete(var);
1753 if (parser->tok == ';') {
1754 if (!parser_next(parser))
1755 return parser->tok == TOKEN_EOF;
1759 if (parser->tok == ',') {
1764 if (parser->tok != '=') {
1765 parseerror(parser, "expected '=' or ';'");
1769 if (!parser_next(parser))
1772 if (parser->tok == '#') {
1774 parseerror(parser, "cannot declare builtins within functions");
1777 if (!isfunc || !func) {
1778 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
1781 if (!parser_next(parser)) {
1782 parseerror(parser, "expected builtin number");
1785 if (parser->tok != TOKEN_INTCONST) {
1786 parseerror(parser, "builtin number must be an integer constant");
1789 if (parser_token(parser)->constval.i <= 0) {
1790 parseerror(parser, "builtin number must be positive integer greater than zero");
1794 func->builtin = -parser_token(parser)->constval.i;
1796 if (!parser_next(parser))
1798 } else if (parser->tok == '{') {
1801 ast_function *old = parser->function;
1804 parseerror(parser, "cannot declare functions within functions");
1808 parser->function = func;
1809 block = parser_parse_block(parser);
1810 parser->function = old;
1815 if (!ast_function_blocks_add(func, block)) {
1816 ast_block_delete(block);
1820 if (parser->tok == ';')
1821 return parser_next(parser) || parser->tok == TOKEN_EOF;
1822 else if (opts_standard == COMPILER_QCC)
1823 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
1826 ast_expression *cexp;
1829 cexp = parser_expression_leave(parser, true);
1830 cval = (ast_value*)cexp;
1831 if (!ast_istype(cval, ast_value) || !cval->isconst)
1832 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
1835 var->isconst = true;
1836 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
1837 memset(&cval->constval, 0, sizeof(cval->constval));
1842 if (parser->tok == ',') {
1847 if (parser->tok != ';') {
1848 parseerror(parser, "missing semicolon");
1852 (void)parser_next(parser);
1858 static bool parser_do(parser_t *parser)
1860 if (parser->tok == TOKEN_TYPENAME)
1862 return parser_variable(parser, NULL);
1864 else if (parser->tok == TOKEN_KEYWORD)
1866 /* handle 'var' and 'const' */
1869 else if (parser->tok == '.')
1873 bool isfunc = false;
1875 lex_ctx ctx = parser_ctx(parser);
1878 /* entity-member declaration */
1879 if (!parser_next(parser) || parser->tok != TOKEN_TYPENAME) {
1880 parseerror(parser, "expected member variable definition");
1884 /* remember the base/return type */
1885 basetype = parser_token(parser)->constval.t;
1887 /* parse into the declaration */
1888 if (!parser_next(parser)) {
1889 parseerror(parser, "expected field def");
1893 /* parse the field type fully */
1894 var = parser_parse_type(parser, basetype, &isfunc);
1899 /* now the field name */
1900 if (parser->tok != TOKEN_IDENT) {
1901 parseerror(parser, "expected field name");
1906 /* check for an existing field
1907 * in original qc we also have to check for an existing
1908 * global named like the field
1910 if (opts_standard == COMPILER_QCC) {
1911 if (parser_find_global(parser, parser_tokval(parser))) {
1912 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
1917 if (parser_find_field(parser, parser_tokval(parser))) {
1918 parseerror(parser, "field %s already exists", parser_tokval(parser));
1923 /* if it was a function, turn it into a function */
1926 /* turn var into a value of TYPE_FUNCTION, with the old var
1929 fval = ast_value_new(ctx, var->name, TYPE_FUNCTION);
1931 ast_value_delete(var);
1932 ast_value_delete(fval);
1936 fval->expression.next = (ast_expression*)var;
1937 MEM_VECTOR_MOVE(&var->expression, params, &fval->expression, params);
1942 /* turn it into a field */
1943 fld = ast_value_new(ctx, parser_tokval(parser), TYPE_FIELD);
1944 fld->expression.next = (ast_expression*)var;
1946 varent.var = (ast_expression*)fld;
1947 varent.name = util_strdup(fld->name);
1948 (void)!parser_t_fields_add(parser, varent);
1950 if (var->expression.vtype == TYPE_VECTOR)
1952 /* create _x, _y and _z fields as well */
1954 varentry_t vx, vy, vz;
1956 len = strlen(varent.name);
1957 vx.var = (ast_expression*)ast_member_new(ast_ctx(fld), (ast_expression*)fld, 0);
1958 vy.var = (ast_expression*)ast_member_new(ast_ctx(fld), (ast_expression*)fld, 1);
1959 vz.var = (ast_expression*)ast_member_new(ast_ctx(fld), (ast_expression*)fld, 2);
1960 vx.name = (char*)mem_a(len+3);
1961 vy.name = (char*)mem_a(len+3);
1962 vz.name = (char*)mem_a(len+3);
1963 memcpy(vx.name, varent.name, len);
1964 memcpy(vy.name, varent.name, len);
1965 memcpy(vz.name, varent.name, len);
1966 vx.name[len] = vy.name[len] = vz.name[len] = '_';
1967 vx.name[len+1] = 'x';
1968 vy.name[len+1] = 'y';
1969 vz.name[len+1] = 'z';
1970 vx.name[len+2] = vy.name[len+2] = vz.name[len+2] = 0;
1971 (void)!parser_t_fields_add(parser, vx);
1972 (void)!parser_t_fields_add(parser, vy);
1973 (void)!parser_t_fields_add(parser, vz);
1976 if (!parser_next(parser)) {
1977 parseerror(parser, "expected semicolon or another field name");
1980 if (parser->tok == ';')
1982 if (parser->tok != ',' || !parser_next(parser)) {
1983 parseerror(parser, "expected semicolon or another field name");
1988 /* skip the semicolon */
1989 if (!parser_next(parser))
1990 return parser->tok == TOKEN_EOF;
1996 parseerror(parser, "unexpected token: %s", parser->lex->tok->value);
2002 static parser_t *parser;
2006 parser = (parser_t*)mem_a(sizeof(parser_t));
2010 memset(parser, 0, sizeof(*parser));
2014 bool parser_compile(const char *filename)
2016 parser->lex = lex_open(filename);
2018 printf("failed to open file \"%s\"\n", filename);
2022 /* initial lexer/parser state */
2023 parser->lex->flags.noops = true;
2025 if (parser_next(parser))
2027 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
2029 if (!parser_do(parser)) {
2030 if (parser->tok == TOKEN_EOF)
2031 parseerror(parser, "unexpected eof");
2032 else if (!parser->errors)
2033 parseerror(parser, "parse error\n");
2034 lex_close(parser->lex);
2041 lex_close(parser->lex);
2043 return !parser->errors;
2046 void parser_cleanup()
2049 for (i = 0; i < parser->functions_count; ++i) {
2050 ast_delete(parser->functions[i]);
2052 for (i = 0; i < parser->imm_vector_count; ++i) {
2053 ast_delete(parser->imm_vector[i]);
2055 for (i = 0; i < parser->imm_string_count; ++i) {
2056 ast_delete(parser->imm_string[i]);
2058 for (i = 0; i < parser->imm_float_count; ++i) {
2059 ast_delete(parser->imm_float[i]);
2061 for (i = 0; i < parser->globals_count; ++i) {
2062 ast_delete(parser->globals[i].var);
2063 mem_d(parser->globals[i].name);
2065 MEM_VECTOR_CLEAR(parser, globals);
2070 bool parser_finish(const char *output)
2075 if (!parser->errors)
2077 ir = ir_builder_new("gmqcc_out");
2079 printf("failed to allocate builder\n");
2083 for (i = 0; i < parser->imm_float_count; ++i) {
2084 if (!ast_global_codegen(parser->imm_float[i], ir)) {
2085 printf("failed to generate global %s\n", parser->imm_float[i]->name);
2086 ir_builder_delete(ir);
2090 for (i = 0; i < parser->imm_string_count; ++i) {
2091 if (!ast_global_codegen(parser->imm_string[i], ir)) {
2092 printf("failed to generate global %s\n", parser->imm_string[i]->name);
2093 ir_builder_delete(ir);
2097 for (i = 0; i < parser->imm_vector_count; ++i) {
2098 if (!ast_global_codegen(parser->imm_vector[i], ir)) {
2099 printf("failed to generate global %s\n", parser->imm_vector[i]->name);
2100 ir_builder_delete(ir);
2104 for (i = 0; i < parser->fields_count; ++i) {
2107 if (!ast_istype(parser->fields[i].var, ast_value))
2109 field = (ast_value*)parser->fields[i].var;
2110 isconst = field->isconst;
2111 field->isconst = false;
2112 if (!ast_global_codegen((ast_value*)field, ir)) {
2113 printf("failed to generate field %s\n", field->name);
2114 ir_builder_delete(ir);
2119 ast_expression *subtype;
2120 field->isconst = true;
2121 subtype = field->expression.next;
2122 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
2123 if (subtype->expression.vtype == TYPE_FIELD)
2124 ifld->fieldtype = subtype->expression.next->expression.vtype;
2125 else if (subtype->expression.vtype == TYPE_FUNCTION)
2126 ifld->outtype = subtype->expression.next->expression.vtype;
2127 (void)!ir_value_set_field(field->ir_v, ifld);
2130 for (i = 0; i < parser->globals_count; ++i) {
2131 if (!ast_istype(parser->globals[i].var, ast_value))
2133 if (!ast_global_codegen((ast_value*)(parser->globals[i].var), ir)) {
2134 printf("failed to generate global %s\n", parser->globals[i].name);
2135 ir_builder_delete(ir);
2139 for (i = 0; i < parser->functions_count; ++i) {
2140 if (!ast_function_codegen(parser->functions[i], ir)) {
2141 printf("failed to generate function %s\n", parser->functions[i]->name);
2142 ir_builder_delete(ir);
2145 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
2146 printf("failed to finalize function %s\n", parser->functions[i]->name);
2147 ir_builder_delete(ir);
2153 ir_builder_dump(ir, printf);
2155 if (!ir_builder_generate(ir, output)) {
2156 printf("*** failed to generate output file\n");
2157 ir_builder_delete(ir);
2161 ir_builder_delete(ir);
2165 printf("*** there were compile errors\n");