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);
67 /* returns true if it counts as an error */
68 bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
71 int lvl = LVL_WARNING;
73 if (!OPTS_WARN(warntype))
76 if (OPTS_WARN(WARN_ERROR)) {
82 vprintmsg(lvl, parser->lex->tok->ctx.file, parser->lex->tok->ctx.line, "warning", fmt, ap);
85 return OPTS_WARN(WARN_ERROR);
88 /**********************************************************************
89 * some maths used for constant folding
92 vector vec3_add(vector a, vector b)
101 vector vec3_sub(vector a, vector b)
110 qcfloat vec3_mulvv(vector a, vector b)
112 return (a.x * b.x + a.y * b.y + a.z * b.z);
115 vector vec3_mulvf(vector a, float b)
124 /**********************************************************************
128 bool parser_next(parser_t *parser)
130 /* lex_do kills the previous token */
131 parser->tok = lex_do(parser->lex);
132 if (parser->tok == TOKEN_EOF || parser->tok >= TOKEN_ERROR)
137 /* lift a token out of the parser so it's not destroyed by parser_next */
138 token *parser_lift(parser_t *parser)
140 token *tok = parser->lex->tok;
141 parser->lex->tok = NULL;
145 #define parser_tokval(p) (p->lex->tok->value)
146 #define parser_token(p) (p->lex->tok)
147 #define parser_ctx(p) (p->lex->tok->ctx)
149 ast_value* parser_const_float(parser_t *parser, double d)
153 for (i = 0; i < parser->imm_float_count; ++i) {
154 if (parser->imm_float[i]->constval.vfloat == d)
155 return parser->imm_float[i];
157 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_FLOAT);
159 out->constval.vfloat = d;
160 if (!parser_t_imm_float_add(parser, out)) {
161 ast_value_delete(out);
167 ast_value* parser_const_float_0(parser_t *parser)
169 if (!parser->imm_float_zero)
170 parser->imm_float_zero = parser_const_float(parser, 0);
171 return parser->imm_float_zero;
174 ast_value* parser_const_string(parser_t *parser, const char *str)
178 for (i = 0; i < parser->imm_string_count; ++i) {
179 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
180 return parser->imm_string[i];
182 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
184 out->constval.vstring = util_strdup(str);
185 if (!parser_t_imm_string_add(parser, out)) {
186 ast_value_delete(out);
192 ast_value* parser_const_vector(parser_t *parser, vector v)
196 for (i = 0; i < parser->imm_vector_count; ++i) {
197 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
198 return parser->imm_vector[i];
200 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
202 out->constval.vvec = v;
203 if (!parser_t_imm_vector_add(parser, out)) {
204 ast_value_delete(out);
210 ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
216 return parser_const_vector(parser, v);
219 ast_value* parser_const_vector_0(parser_t *parser)
221 if (!parser->imm_vector_zero)
222 parser->imm_vector_zero = parser_const_vector_f(parser, 0, 0, 0);
223 return parser->imm_vector_zero;
226 ast_expression* parser_find_field(parser_t *parser, const char *name)
229 for (i = 0; i < parser->fields_count; ++i) {
230 if (!strcmp(parser->fields[i].name, name))
231 return parser->fields[i].var;
236 ast_expression* parser_find_global(parser_t *parser, const char *name)
239 for (i = 0; i < parser->globals_count; ++i) {
240 if (!strcmp(parser->globals[i].name, name))
241 return parser->globals[i].var;
246 ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto)
250 for (i = parser->locals_count; i > upto;) {
252 if (!strcmp(parser->locals[i].name, name))
253 return parser->locals[i].var;
255 if (!parser->function)
257 fun = parser->function->vtype;
258 for (i = 0; i < fun->expression.params_count; ++i) {
259 if (!strcmp(fun->expression.params[i]->name, name))
260 return (ast_expression*)(fun->expression.params[i]);
265 ast_expression* parser_find_var(parser_t *parser, const char *name)
268 v = parser_find_local(parser, name, 0);
269 if (!v) v = parser_find_global(parser, name);
274 MEM_VECTOR_MAKE(ast_value*, p);
276 MEM_VEC_FUNCTIONS(paramlist_t, ast_value*, p)
278 static ast_value *parser_parse_type(parser_t *parser, int basetype, bool *isfunc)
282 lex_ctx ctx = parser_ctx(parser);
283 int vtype = basetype;
287 MEM_VECTOR_INIT(¶ms, p);
291 if (parser->tok == '(') {
297 if (!parser_next(parser))
300 if (parser->tok == ')')
303 temptype = parser_token(parser)->constval.t;
304 if (!parser_next(parser))
307 param = parser_parse_type(parser, temptype, &dummy);
313 if (parser->tok == TOKEN_IDENT) {
314 /* named parameter */
315 if (!ast_value_set_name(param, parser_tokval(parser)))
317 if (!parser_next(parser))
321 if (!paramlist_t_p_add(¶ms, param)) {
322 parseerror(parser, "Out of memory while parsing typename");
326 if (parser->tok == ',')
328 if (parser->tok == ')')
330 parseerror(parser, "Unexpected token");
333 if (!parser_next(parser))
337 var = ast_value_new(ctx, "<unnamed>", vtype);
340 MEM_VECTOR_MOVE(¶ms, p, &var->expression, params);
343 for (i = 0; i < params.p_count; ++i)
344 ast_value_delete(params.p[i]);
345 MEM_VECTOR_CLEAR(¶ms, p);
351 size_t etype; /* 0 = expression, others are operators */
355 ast_block *block; /* for commas and function calls */
360 MEM_VECTOR_MAKE(sy_elem, out);
361 MEM_VECTOR_MAKE(sy_elem, ops);
363 MEM_VEC_FUNCTIONS(shunt, sy_elem, out)
364 MEM_VEC_FUNCTIONS(shunt, sy_elem, ops)
366 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
376 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
379 e.out = (ast_expression*)v;
386 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
388 e.etype = 1 + (op - operators);
396 static sy_elem syparen(lex_ctx ctx, int p, size_t off) {
408 # define DEBUGSHUNTDO(x) x
410 # define DEBUGSHUNTDO(x)
413 static bool parser_sy_pop(parser_t *parser, shunt *sy)
417 ast_expression *out = NULL;
418 ast_expression *exprs[3];
419 ast_block *blocks[3];
420 ast_value *asvalue[3];
422 qcint generated_op = 0;
424 if (!sy->ops_count) {
425 parseerror(parser, "internal error: missing operator");
429 if (sy->ops[sy->ops_count-1].paren) {
430 parseerror(parser, "unmatched parenthesis");
434 op = &operators[sy->ops[sy->ops_count-1].etype - 1];
435 ctx = sy->ops[sy->ops_count-1].ctx;
437 DEBUGSHUNTDO(printf("apply %s\n", op->op));
439 if (sy->out_count < op->operands) {
440 parseerror(parser, "internal error: not enough operands: %i", sy->out_count);
446 sy->out_count -= op->operands;
447 for (i = 0; i < op->operands; ++i) {
448 exprs[i] = sy->out[sy->out_count+i].out;
449 blocks[i] = sy->out[sy->out_count+i].block;
450 asvalue[i] = (ast_value*)exprs[i];
453 if (blocks[0] && !blocks[0]->exprs_count && op->id != opid1(',')) {
454 parseerror(parser, "internal error: operator cannot be applied on empty blocks");
458 #define NotSameType(T) \
459 (exprs[0]->expression.vtype != exprs[1]->expression.vtype || \
460 exprs[0]->expression.vtype != T)
461 #define CanConstFold1(A) \
462 (ast_istype((A), ast_value) && ((ast_value*)(A))->isconst)
463 #define CanConstFold(A, B) \
464 (CanConstFold1(A) && CanConstFold1(B))
465 #define ConstV(i) (asvalue[(i)]->constval.vvec)
466 #define ConstF(i) (asvalue[(i)]->constval.vfloat)
470 parseerror(parser, "internal error: unhandled operand");
474 if (exprs[0]->expression.vtype == TYPE_ENTITY) {
475 if (exprs[1]->expression.vtype != TYPE_FIELD) {
476 parseerror(parser, "type error: right hand of member-operand should be an entity-field");
479 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
481 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
482 parseerror(parser, "internal error: vector access is not supposed to be handled at this point");
486 parseerror(parser, "type error: member-of operator on something that is not an entity or vector");
493 if (!ast_block_exprs_add(blocks[0], exprs[1]))
496 blocks[0] = ast_block_new(ctx);
497 if (!ast_block_exprs_add(blocks[0], exprs[0]) ||
498 !ast_block_exprs_add(blocks[0], exprs[1]))
503 if (!ast_block_set_type(blocks[0], exprs[1]))
506 sy->out[sy->out_count++] = syblock(ctx, blocks[0]);
510 switch (exprs[0]->expression.vtype) {
512 if (CanConstFold1(exprs[0]))
513 out = (ast_expression*)parser_const_float(parser, -ConstF(0));
515 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
516 (ast_expression*)parser_const_float_0(parser),
520 if (CanConstFold1(exprs[0]))
521 out = (ast_expression*)parser_const_vector_f(parser,
522 -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
524 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
525 (ast_expression*)parser_const_vector_0(parser),
529 parseerror(parser, "invalid types used in expression: cannot negate type %s",
530 type_name[exprs[0]->expression.vtype]);
536 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
537 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
539 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
540 type_name[exprs[0]->expression.vtype],
541 type_name[exprs[1]->expression.vtype]);
544 switch (exprs[0]->expression.vtype) {
546 if (CanConstFold(exprs[0], exprs[1]))
548 out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
551 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
554 if (CanConstFold(exprs[0], exprs[1]))
555 out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
557 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
560 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
561 type_name[exprs[0]->expression.vtype],
562 type_name[exprs[1]->expression.vtype]);
567 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
568 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
570 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
571 type_name[exprs[1]->expression.vtype],
572 type_name[exprs[0]->expression.vtype]);
575 switch (exprs[0]->expression.vtype) {
577 if (CanConstFold(exprs[0], exprs[1]))
578 out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
580 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
583 if (CanConstFold(exprs[0], exprs[1]))
584 out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
586 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
589 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
590 type_name[exprs[1]->expression.vtype],
591 type_name[exprs[0]->expression.vtype]);
596 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
597 exprs[0]->expression.vtype != TYPE_VECTOR &&
598 exprs[0]->expression.vtype != TYPE_FLOAT &&
599 exprs[1]->expression.vtype != TYPE_VECTOR &&
600 exprs[1]->expression.vtype != TYPE_FLOAT)
602 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
603 type_name[exprs[1]->expression.vtype],
604 type_name[exprs[0]->expression.vtype]);
607 switch (exprs[0]->expression.vtype) {
609 if (exprs[1]->expression.vtype == TYPE_VECTOR)
611 if (CanConstFold(exprs[0], exprs[1]))
612 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
614 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
618 if (CanConstFold(exprs[0], exprs[1]))
619 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
621 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
625 if (exprs[1]->expression.vtype == TYPE_FLOAT)
627 if (CanConstFold(exprs[0], exprs[1]))
628 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
630 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
634 if (CanConstFold(exprs[0], exprs[1]))
635 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
637 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
641 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
642 type_name[exprs[1]->expression.vtype],
643 type_name[exprs[0]->expression.vtype]);
648 if (NotSameType(TYPE_FLOAT)) {
649 parseerror(parser, "invalid types used in expression: cannot divide types %s and %s",
650 type_name[exprs[0]->expression.vtype],
651 type_name[exprs[1]->expression.vtype]);
654 if (CanConstFold(exprs[0], exprs[1]))
655 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
657 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
661 parseerror(parser, "qc does not have a modulo operator");
665 if (NotSameType(TYPE_FLOAT)) {
666 parseerror(parser, "invalid types used in expression: cannot perform bit operations between types %s and %s",
667 type_name[exprs[0]->expression.vtype],
668 type_name[exprs[1]->expression.vtype]);
671 if (CanConstFold(exprs[0], exprs[1]))
672 out = (ast_expression*)parser_const_float(parser,
673 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
674 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
676 out = (ast_expression*)ast_binary_new(ctx,
677 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
681 parseerror(parser, "TODO: bitxor");
686 case opid3('<','<','='):
687 case opid3('>','>','='):
688 parseerror(parser, "TODO: shifts");
692 generated_op += 1; /* INSTR_OR */
694 generated_op += INSTR_AND;
695 if (NotSameType(TYPE_FLOAT)) {
696 parseerror(parser, "invalid types used in expression: cannot perform logical operations between types %s and %s",
697 type_name[exprs[0]->expression.vtype],
698 type_name[exprs[1]->expression.vtype]);
699 parseerror(parser, "TODO: logical ops for arbitrary types using INSTR_NOT");
700 parseerror(parser, "TODO: optional early out");
703 if (opts_standard == COMPILER_GMQCC)
704 printf("TODO: early out logic\n");
705 if (CanConstFold(exprs[0], exprs[1]))
706 out = (ast_expression*)parser_const_float(parser,
707 (generated_op == INSTR_OR ? (ConstF(0) || ConstF(1)) : (ConstF(0) && ConstF(1))));
709 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
713 generated_op += 1; /* INSTR_GT */
715 generated_op += 1; /* INSTR_LT */
716 case opid2('>', '='):
717 generated_op += 1; /* INSTR_GE */
718 case opid2('<', '='):
719 generated_op += INSTR_LE;
720 if (NotSameType(TYPE_FLOAT)) {
721 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
722 type_name[exprs[0]->expression.vtype],
723 type_name[exprs[1]->expression.vtype]);
726 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
728 case opid2('!', '='):
729 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
730 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
731 type_name[exprs[0]->expression.vtype],
732 type_name[exprs[1]->expression.vtype]);
735 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
737 case opid2('=', '='):
738 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
739 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
740 type_name[exprs[0]->expression.vtype],
741 type_name[exprs[1]->expression.vtype]);
744 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
748 if (ast_istype(exprs[0], ast_entfield))
749 assignop = type_storep_instr[exprs[0]->expression.vtype];
751 assignop = type_store_instr[exprs[0]->expression.vtype];
752 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
756 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
757 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
759 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
760 type_name[exprs[0]->expression.vtype],
761 type_name[exprs[1]->expression.vtype]);
764 if (ast_istype(exprs[0], ast_entfield))
765 assignop = type_storep_instr[exprs[0]->expression.vtype];
767 assignop = type_store_instr[exprs[0]->expression.vtype];
768 switch (exprs[0]->expression.vtype) {
770 out = (ast_expression*)ast_binstore_new(ctx, assignop,
771 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
775 out = (ast_expression*)ast_binstore_new(ctx, assignop,
776 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
780 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
781 type_name[exprs[0]->expression.vtype],
782 type_name[exprs[1]->expression.vtype]);
790 parseerror(parser, "failed to apply operand %s", op->op);
794 DEBUGSHUNTDO(printf("applied %s\n", op->op));
795 sy->out[sy->out_count++] = syexp(ctx, out);
799 static bool parser_close_call(parser_t *parser, shunt *sy)
801 /* was a function call */
809 fid = sy->ops[sy->ops_count].off;
811 /* out[fid] is the function
812 * everything above is parameters...
814 * 1 params = ast_expression
818 if (sy->out_count < 1 || sy->out_count <= fid) {
819 parseerror(parser, "internal error: function call needs function and parameter list...");
823 fun = sy->out[fid].out;
825 call = ast_call_new(sy->ops[sy->ops_count].ctx, fun);
827 parseerror(parser, "out of memory");
831 if (fid+1 == sy->out_count) {
834 } else if (fid+2 == sy->out_count) {
837 params = sy->out[sy->out_count].block;
841 if (!ast_call_params_add(call, sy->out[sy->out_count].out)) {
842 ast_delete(sy->out[sy->out_count].out);
843 parseerror(parser, "out of memory");
847 paramcount = params->exprs_count;
848 MEM_VECTOR_MOVE(params, exprs, call, params);
852 parseerror(parser, "invalid function call");
856 /* overwrite fid, the function, with a call */
857 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
859 if (fun->expression.vtype != TYPE_FUNCTION) {
860 parseerror(parser, "not a function");
864 if (!fun->expression.next) {
865 parseerror(parser, "could not determine function return type");
868 if (fun->expression.params_count != paramcount) {
869 parseerror(parser, "expected %i parameters, got %i", (int)fun->expression.params_count, paramcount);
877 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
879 if (!sy->ops_count) {
880 parseerror(parser, "unmatched closing paren");
883 if (sy->ops[sy->ops_count-1].paren == 1) {
884 parseerror(parser, "empty parenthesis expression");
887 while (sy->ops_count) {
888 if (sy->ops[sy->ops_count-1].paren == 'f') {
889 if (!parser_close_call(parser, sy))
893 if (sy->ops[sy->ops_count-1].paren == 1) {
895 return !functions_only;
897 if (!parser_sy_pop(parser, sy))
903 static ast_expression* parser_expression_leave(parser_t *parser, bool stopatcomma)
905 ast_expression *expr = NULL;
908 bool gotmemberof = false;
910 /* count the parens because an if starts with one, so the
911 * end of a condition is an unmatched closing paren
915 MEM_VECTOR_INIT(&sy, out);
916 MEM_VECTOR_INIT(&sy, ops);
923 parser->memberof = 0;
926 bool nextwant = true;
927 if (parser->tok == TOKEN_IDENT)
931 if (opts_standard == COMPILER_GMQCC)
933 if (parser->memberof == TYPE_ENTITY)
934 var = parser_find_field(parser, parser_tokval(parser));
935 else if (parser->memberof == TYPE_VECTOR)
937 parseerror(parser, "TODO: implement effective vector member access");
940 else if (parser->memberof) {
941 parseerror(parser, "namespace for member not found");
945 var = parser_find_var(parser, parser_tokval(parser));
947 var = parser_find_var(parser, parser_tokval(parser));
949 var = parser_find_field(parser, parser_tokval(parser));
952 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
955 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), var))) {
956 parseerror(parser, "out of memory");
959 DEBUGSHUNTDO(printf("push %s\n", parser_tokval(parser)));
961 else if (parser->tok == TOKEN_FLOATCONST) {
962 ast_value *val = parser_const_float(parser, (parser_token(parser)->constval.f));
965 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
966 parseerror(parser, "out of memory");
969 DEBUGSHUNTDO(printf("push %g\n", parser_token(parser)->constval.f));
971 else if (parser->tok == TOKEN_INTCONST) {
972 ast_value *val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
975 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
976 parseerror(parser, "out of memory");
979 DEBUGSHUNTDO(printf("push %i\n", parser_token(parser)->constval.i));
981 else if (parser->tok == TOKEN_STRINGCONST) {
982 ast_value *val = parser_const_string(parser, parser_tokval(parser));
985 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
986 parseerror(parser, "out of memory");
989 DEBUGSHUNTDO(printf("push string\n"));
991 else if (parser->tok == TOKEN_VECTORCONST) {
992 ast_value *val = parser_const_vector(parser, parser_token(parser)->constval.v);
995 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
996 parseerror(parser, "out of memory");
999 DEBUGSHUNTDO(printf("push '%g %g %g'\n",
1000 parser_token(parser)->constval.v.x,
1001 parser_token(parser)->constval.v.y,
1002 parser_token(parser)->constval.v.z));
1004 else if (parser->tok == '(') {
1006 nextwant = false; /* not expecting an operator next */
1007 if (!shunt_ops_add(&sy, syparen(parser_ctx(parser), 1, 0))) {
1008 parseerror(parser, "out of memory");
1011 DEBUGSHUNTDO(printf("push (\n"));
1013 else if (parser->tok == ')') {
1014 DEBUGSHUNTDO(printf("do[nop] )\n"));
1018 /* allowed for function calls */
1019 if (!parser_close_paren(parser, &sy, true))
1023 /* TODO: prefix operators */
1024 parseerror(parser, "expected statement");
1028 parser->lex->flags.noops = !wantop;
1030 bool nextwant = false;
1031 if (parser->tok == '(') {
1032 DEBUGSHUNTDO(printf("push (\n"));
1034 /* we expected an operator, this is the function-call operator */
1035 if (!shunt_ops_add(&sy, syparen(parser_ctx(parser), 'f', sy.out_count-1))) {
1036 parseerror(parser, "out of memory");
1040 else if (parser->tok == ')') {
1041 DEBUGSHUNTDO(printf("do[op] )\n"));
1045 /* we do expect an operator next */
1046 /* closing an opening paren */
1047 if (!parser_close_paren(parser, &sy, false))
1051 else if (parser->tok != TOKEN_OPERATOR) {
1052 parseerror(parser, "expected operator or end of statement");
1056 /* classify the operator */
1057 /* TODO: suffix operators */
1058 const oper_info *op;
1059 const oper_info *olast = NULL;
1061 for (o = 0; o < operator_count; ++o) {
1062 if (!(operators[o].flags & OP_PREFIX) &&
1063 !(operators[o].flags & OP_SUFFIX) && /* remove this */
1064 !strcmp(parser_tokval(parser), operators[o].op))
1069 if (o == operator_count) {
1070 /* no operator found... must be the end of the statement */
1073 /* found an operator */
1076 /* when declaring variables, a comma starts a new variable */
1077 if (op->id == opid1(',') && !parens && stopatcomma)
1080 if (op->id == opid1('.')) {
1081 /* for gmqcc standard: open up the namespace of the previous type */
1082 ast_expression *prevex = sy.out[sy.out_count-1].out;
1084 parseerror(parser, "unexpected member operator");
1087 if (prevex->expression.vtype == TYPE_ENTITY)
1088 parser->memberof = TYPE_ENTITY;
1089 else if (prevex->expression.vtype == TYPE_VECTOR)
1090 parser->memberof = TYPE_VECTOR;
1092 parseerror(parser, "type error: type has no members");
1098 if (sy.ops_count && !sy.ops[sy.ops_count-1].paren)
1099 olast = &operators[sy.ops[sy.ops_count-1].etype-1];
1102 (op->prec < olast->prec) ||
1103 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1105 if (!parser_sy_pop(parser, &sy))
1107 if (sy.ops_count && !sy.ops[sy.ops_count-1].paren)
1108 olast = &operators[sy.ops[sy.ops_count-1].etype-1];
1113 DEBUGSHUNTDO(printf("push operator %s\n", op->op));
1114 if (!shunt_ops_add(&sy, syop(parser_ctx(parser), op)))
1118 parser->lex->flags.noops = !wantop;
1120 if (!parser_next(parser)) {
1123 if (parser->tok == ';') {
1128 while (sy.ops_count) {
1129 if (!parser_sy_pop(parser, &sy))
1133 parser->lex->flags.noops = true;
1134 if (!sy.out_count) {
1135 parseerror(parser, "empty expression");
1138 expr = sy.out[0].out;
1139 MEM_VECTOR_CLEAR(&sy, out);
1140 MEM_VECTOR_CLEAR(&sy, ops);
1141 DEBUGSHUNTDO(printf("shut done\n"));
1145 parser->lex->flags.noops = true;
1146 MEM_VECTOR_CLEAR(&sy, out);
1147 MEM_VECTOR_CLEAR(&sy, ops);
1151 static ast_expression* parser_expression(parser_t *parser, bool stopatcomma)
1153 ast_expression *e = parser_expression_leave(parser, stopatcomma);
1156 if (!parser_next(parser)) {
1163 static bool parser_parse_if(parser_t *parser, ast_block *block, ast_expression **out)
1166 ast_expression *cond, *ontrue, *onfalse = NULL;
1168 lex_ctx ctx = parser_ctx(parser);
1170 /* skip the 'if' and check for opening paren */
1171 if (!parser_next(parser) || parser->tok != '(') {
1172 parseerror(parser, "expected 'if' condition in parenthesis");
1175 /* parse into the expression */
1176 if (!parser_next(parser)) {
1177 parseerror(parser, "expected 'if' condition after opening paren");
1180 /* parse the condition */
1181 cond = parser_expression_leave(parser, false);
1185 if (parser->tok != ')') {
1186 parseerror(parser, "expected closing paren after 'if' condition");
1190 /* parse into the 'then' branch */
1191 if (!parser_next(parser)) {
1192 parseerror(parser, "expected statement for on-true branch of 'if'");
1196 ontrue = parser_parse_statement_or_block(parser);
1201 /* check for an else */
1202 if (!strcmp(parser_tokval(parser), "else")) {
1203 /* parse into the 'else' branch */
1204 if (!parser_next(parser)) {
1205 parseerror(parser, "expected on-false branch after 'else'");
1210 onfalse = parser_parse_statement_or_block(parser);
1218 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
1219 *out = (ast_expression*)ifthen;
1223 static bool parser_parse_while(parser_t *parser, ast_block *block, ast_expression **out)
1226 ast_expression *cond, *ontrue;
1228 lex_ctx ctx = parser_ctx(parser);
1230 /* skip the 'while' and check for opening paren */
1231 if (!parser_next(parser) || parser->tok != '(') {
1232 parseerror(parser, "expected 'while' condition in parenthesis");
1235 /* parse into the expression */
1236 if (!parser_next(parser)) {
1237 parseerror(parser, "expected 'while' condition after opening paren");
1240 /* parse the condition */
1241 cond = parser_expression_leave(parser, false);
1245 if (parser->tok != ')') {
1246 parseerror(parser, "expected closing paren after 'while' condition");
1250 /* parse into the 'then' branch */
1251 if (!parser_next(parser)) {
1252 parseerror(parser, "expected while-loop body");
1256 ontrue = parser_parse_statement_or_block(parser);
1262 aloop = ast_loop_new(ctx, NULL, cond, NULL, NULL, ontrue);
1263 *out = (ast_expression*)aloop;
1267 static bool parser_parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
1270 ast_expression *cond, *ontrue;
1272 lex_ctx ctx = parser_ctx(parser);
1274 /* skip the 'do' and get the body */
1275 if (!parser_next(parser)) {
1276 parseerror(parser, "expected loop body");
1279 ontrue = parser_parse_statement_or_block(parser);
1283 /* expect the "while" */
1284 if (parser->tok != TOKEN_KEYWORD ||
1285 strcmp(parser_tokval(parser), "while"))
1287 parseerror(parser, "expected 'while' and condition");
1292 /* skip the 'while' and check for opening paren */
1293 if (!parser_next(parser) || parser->tok != '(') {
1294 parseerror(parser, "expected 'while' condition in parenthesis");
1298 /* parse into the expression */
1299 if (!parser_next(parser)) {
1300 parseerror(parser, "expected 'while' condition after opening paren");
1304 /* parse the condition */
1305 cond = parser_expression_leave(parser, false);
1309 if (parser->tok != ')') {
1310 parseerror(parser, "expected closing paren after 'while' condition");
1316 if (!parser_next(parser) || parser->tok != ';') {
1317 parseerror(parser, "expected semicolon after condition");
1323 if (!parser_next(parser)) {
1324 parseerror(parser, "parse error");
1330 aloop = ast_loop_new(ctx, NULL, NULL, cond, NULL, ontrue);
1331 *out = (ast_expression*)aloop;
1335 static bool parser_parse_for(parser_t *parser, ast_block *block, ast_expression **out)
1338 ast_expression *initexpr, *cond, *increment, *ontrue;
1339 size_t oldblocklocal;
1341 lex_ctx ctx = parser_ctx(parser);
1343 oldblocklocal = parser->blocklocal;
1344 parser->blocklocal = parser->locals_count;
1351 /* skip the 'while' and check for opening paren */
1352 if (!parser_next(parser) || parser->tok != '(') {
1353 parseerror(parser, "expected 'for' expressions in parenthesis");
1356 /* parse into the expression */
1357 if (!parser_next(parser)) {
1358 parseerror(parser, "expected 'for' initializer after opening paren");
1362 if (parser->tok == TOKEN_TYPENAME) {
1363 if (opts_standard != COMPILER_GMQCC) {
1364 if (parsewarning(parser, WARN_EXTENSIONS,
1365 "current standard does not allow variable declarations in for-loop initializers"))
1369 parseerror(parser, "TODO: assignment of new variables to be non-const");
1371 if (!parser_variable(parser, block))
1374 else if (parser->tok != ';')
1376 initexpr = parser_expression_leave(parser, false);
1381 /* move on to condition */
1382 if (parser->tok != ';') {
1383 parseerror(parser, "expected semicolon after for-loop initializer");
1386 if (!parser_next(parser)) {
1387 parseerror(parser, "expected for-loop condition");
1391 /* parse the condition */
1392 if (parser->tok != ';') {
1393 cond = parser_expression_leave(parser, false);
1398 /* move on to incrementor */
1399 if (parser->tok != ';') {
1400 parseerror(parser, "expected semicolon after for-loop initializer");
1403 if (!parser_next(parser)) {
1404 parseerror(parser, "expected for-loop condition");
1408 /* parse the incrementor */
1409 if (parser->tok != ')') {
1410 increment = parser_expression_leave(parser, false);
1416 if (parser->tok != ')') {
1417 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
1420 /* parse into the 'then' branch */
1421 if (!parser_next(parser)) {
1422 parseerror(parser, "expected for-loop body");
1425 ontrue = parser_parse_statement_or_block(parser);
1430 aloop = ast_loop_new(ctx, initexpr, cond, NULL, increment, ontrue);
1431 *out = (ast_expression*)aloop;
1433 while (parser->locals_count > parser->blocklocal)
1434 parser_pop_local(parser);
1435 parser->blocklocal = oldblocklocal;
1438 if (initexpr) ast_delete(initexpr);
1439 if (cond) ast_delete(cond);
1440 if (increment) ast_delete(increment);
1441 while (parser->locals_count > parser->blocklocal)
1442 parser_pop_local(parser);
1443 parser->blocklocal = oldblocklocal;
1447 static bool parser_parse_statement(parser_t *parser, ast_block *block, ast_expression **out)
1449 if (parser->tok == TOKEN_TYPENAME)
1451 /* local variable */
1453 parseerror(parser, "cannot declare a variable from here");
1456 if (opts_standard == COMPILER_QCC) {
1457 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
1460 if (!parser_variable(parser, block))
1465 else if (parser->tok == TOKEN_KEYWORD)
1467 if (!strcmp(parser_tokval(parser), "local"))
1470 parseerror(parser, "cannot declare a local variable here");
1473 if (!parser_next(parser)) {
1474 parseerror(parser, "expected variable declaration");
1477 if (!parser_variable(parser, block))
1482 else if (!strcmp(parser_tokval(parser), "return"))
1484 ast_expression *exp = NULL;
1485 ast_return *ret = NULL;
1486 ast_value *expected = parser->function->vtype;
1488 if (!parser_next(parser)) {
1489 parseerror(parser, "expected return expression");
1493 if (parser->tok != ';') {
1494 exp = parser_expression(parser, false);
1498 if (exp->expression.vtype != expected->expression.next->expression.vtype) {
1499 parseerror(parser, "return with invalid expression");
1502 ret = ast_return_new(exp->expression.node.context, exp);
1508 *out = (ast_expression*)ret;
1509 } else if (!parser_next(parser)) {
1510 parseerror(parser, "expected semicolon");
1511 if (expected->expression.next->expression.vtype != TYPE_VOID) {
1512 parseerror(parser, "return without value");
1517 else if (!strcmp(parser_tokval(parser), "if"))
1519 return parser_parse_if(parser, block, out);
1521 else if (!strcmp(parser_tokval(parser), "while"))
1523 return parser_parse_while(parser, block, out);
1525 else if (!strcmp(parser_tokval(parser), "do"))
1527 return parser_parse_dowhile(parser, block, out);
1529 else if (!strcmp(parser_tokval(parser), "for"))
1531 if (opts_standard == COMPILER_QCC) {
1532 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
1535 return parser_parse_for(parser, block, out);
1537 parseerror(parser, "Unexpected keyword");
1540 else if (parser->tok == '{')
1543 inner = parser_parse_block(parser);
1546 *out = (ast_expression*)inner;
1551 ast_expression *exp = parser_expression(parser, false);
1559 static void parser_pop_local(parser_t *parser)
1561 parser->locals_count--;
1562 mem_d(parser->locals[parser->locals_count].name);
1565 static ast_block* parser_parse_block(parser_t *parser)
1567 size_t oldblocklocal;
1568 ast_block *block = NULL;
1570 oldblocklocal = parser->blocklocal;
1571 parser->blocklocal = parser->locals_count;
1573 if (!parser_next(parser)) { /* skip the '{' */
1574 parseerror(parser, "expected function body");
1578 block = ast_block_new(parser_ctx(parser));
1580 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
1582 ast_expression *expr;
1583 if (parser->tok == '}')
1586 if (!parser_parse_statement(parser, block, &expr)) {
1587 ast_block_delete(block);
1593 if (!ast_block_exprs_add(block, expr)) {
1595 ast_block_delete(block);
1601 if (parser->tok != '}') {
1602 ast_block_delete(block);
1605 (void)parser_next(parser);
1609 while (parser->locals_count > parser->blocklocal)
1610 parser_pop_local(parser);
1611 parser->blocklocal = oldblocklocal;
1612 /* unroll the local vector */
1616 static ast_expression* parser_parse_statement_or_block(parser_t *parser)
1618 ast_expression *expr;
1619 if (parser->tok == '{')
1620 return (ast_expression*)parser_parse_block(parser);
1621 if (!parser_parse_statement(parser, NULL, &expr))
1626 static bool parser_variable(parser_t *parser, ast_block *localblock)
1628 bool isfunc = false;
1629 ast_function *func = NULL;
1633 ast_expression *olddecl;
1635 int basetype = parser_token(parser)->constval.t;
1639 if (!parser_next(parser)) { /* skip basetype or comma */
1640 parseerror(parser, "expected variable declaration");
1647 ctx = parser_ctx(parser);
1648 var = parser_parse_type(parser, basetype, &isfunc);
1653 if (parser->tok != TOKEN_IDENT) {
1654 parseerror(parser, "expected variable name\n");
1659 if (!localblock && (olddecl = parser_find_global(parser, parser_tokval(parser)))) {
1660 ast_value_delete(var);
1661 parseerror(parser, "global %s already declared here: %s:%i\n",
1662 parser_tokval(parser), ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line);
1666 if (localblock && parser_find_local(parser, parser_tokval(parser), parser->blocklocal)) {
1667 ast_value_delete(var);
1668 parseerror(parser, "local %s already declared here: %s:%i\n",
1669 parser_tokval(parser), ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line);
1674 if (!ast_value_set_name(var, parser_tokval(parser))) {
1675 parseerror(parser, "failed to set variable name\n");
1676 ast_value_delete(var);
1681 /* a function was defined */
1683 ast_value *proto = NULL;
1686 olddecl = parser_find_global(parser, parser_tokval(parser));
1688 olddecl = parser_find_local(parser, parser_tokval(parser), parser->blocklocal);
1691 /* we had a prototype */
1692 if (!ast_istype(olddecl, ast_value)) {
1693 /* theoretically not possible you think?
1699 parseerror(parser, "cannot declare a function with the same name as a vector's member: %s",
1700 parser_tokval(parser));
1701 ast_value_delete(var);
1705 proto = (ast_value*)olddecl;
1708 /* turn var into a value of TYPE_FUNCTION, with the old var
1711 fval = ast_value_new(ctx, var->name, TYPE_FUNCTION);
1712 func = ast_function_new(ctx, var->name, fval);
1713 if (!fval || !func) {
1714 ast_value_delete(var);
1715 if (fval) ast_value_delete(fval);
1716 if (func) ast_function_delete(func);
1720 fval->expression.next = (ast_expression*)var;
1721 MEM_VECTOR_MOVE(&var->expression, params, &fval->expression, params);
1723 /* we compare the type late here, but it's easier than
1724 * messing with the parameter-vector etc. earlier
1727 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)fval)) {
1728 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
1730 ast_ctx(proto).file, ast_ctx(proto).line);
1731 ast_function_delete(func);
1732 ast_value_delete(fval);
1735 ast_function_delete(func);
1736 ast_value_delete(fval);
1738 func = var->constval.vfunc;
1742 if (!parser_t_functions_add(parser, func)) {
1743 ast_function_delete(func);
1744 ast_value_delete(fval);
1752 varent.name = util_strdup(var->name);
1753 varent.var = (ast_expression*)var;
1754 if (var->expression.vtype == TYPE_VECTOR)
1756 size_t len = strlen(varent.name);
1757 varentry_t vx, vy, vz;
1758 vx.var = (ast_expression*)ast_member_new(var->expression.node.context, (ast_expression*)var, 0);
1759 vy.var = (ast_expression*)ast_member_new(var->expression.node.context, (ast_expression*)var, 1);
1760 vz.var = (ast_expression*)ast_member_new(var->expression.node.context, (ast_expression*)var, 2);
1761 vx.name = (char*)mem_a(len+3);
1762 vy.name = (char*)mem_a(len+3);
1763 vz.name = (char*)mem_a(len+3);
1764 memcpy(vx.name, varent.name, len);
1765 memcpy(vy.name, varent.name, len);
1766 memcpy(vz.name, varent.name, len);
1767 vx.name[len] = vy.name[len] = vz.name[len] = '_';
1768 vx.name[len+1] = 'x';
1769 vy.name[len+1] = 'y';
1770 vz.name[len+1] = 'z';
1771 vx.name[len+2] = vy.name[len+2] = vz.name[len+2] = 0;
1774 (void)!parser_t_globals_add(parser, varent);
1775 (void)!parser_t_globals_add(parser, vx);
1776 (void)!parser_t_globals_add(parser, vy);
1777 (void)!parser_t_globals_add(parser, vz);
1779 (void)!parser_t_locals_add(parser, varent);
1780 (void)!parser_t_locals_add(parser, vx);
1781 (void)!parser_t_locals_add(parser, vy);
1782 (void)!parser_t_locals_add(parser, vz);
1787 if ( (!localblock && !parser_t_globals_add(parser, varent)) ||
1788 ( localblock && !parser_t_locals_add(parser, varent)) )
1790 ast_value_delete(var);
1794 if (localblock && !ast_block_locals_add(localblock, var))
1796 parser_pop_local(parser);
1797 ast_value_delete(var);
1801 if (!parser_next(parser)) {
1802 ast_value_delete(var);
1806 if (parser->tok == ';') {
1807 if (!parser_next(parser))
1808 return parser->tok == TOKEN_EOF;
1812 if (parser->tok == ',') {
1817 if (parser->tok != '=') {
1818 parseerror(parser, "expected '=' or ';'");
1822 if (!parser_next(parser))
1825 if (parser->tok == '#') {
1827 parseerror(parser, "cannot declare builtins within functions");
1830 if (!isfunc || !func) {
1831 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
1834 if (!parser_next(parser)) {
1835 parseerror(parser, "expected builtin number");
1838 if (parser->tok != TOKEN_INTCONST) {
1839 parseerror(parser, "builtin number must be an integer constant");
1842 if (parser_token(parser)->constval.i <= 0) {
1843 parseerror(parser, "builtin number must be positive integer greater than zero");
1847 func->builtin = -parser_token(parser)->constval.i;
1849 if (!parser_next(parser))
1851 } else if (parser->tok == '{') {
1854 ast_function *old = parser->function;
1857 parseerror(parser, "cannot declare functions within functions");
1861 parser->function = func;
1862 block = parser_parse_block(parser);
1863 parser->function = old;
1868 if (!ast_function_blocks_add(func, block)) {
1869 ast_block_delete(block);
1873 if (parser->tok == ';')
1874 return parser_next(parser) || parser->tok == TOKEN_EOF;
1875 else if (opts_standard == COMPILER_QCC)
1876 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
1879 ast_expression *cexp;
1882 cexp = parser_expression_leave(parser, true);
1883 cval = (ast_value*)cexp;
1884 if (!ast_istype(cval, ast_value) || !cval->isconst)
1885 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
1888 var->isconst = true;
1889 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
1890 memset(&cval->constval, 0, sizeof(cval->constval));
1895 if (parser->tok == ',') {
1900 if (parser->tok != ';') {
1901 parseerror(parser, "missing semicolon");
1905 (void)parser_next(parser);
1911 static bool parser_do(parser_t *parser)
1913 if (parser->tok == TOKEN_TYPENAME)
1915 return parser_variable(parser, NULL);
1917 else if (parser->tok == TOKEN_KEYWORD)
1919 /* handle 'var' and 'const' */
1922 else if (parser->tok == '.')
1926 bool isfunc = false;
1928 lex_ctx ctx = parser_ctx(parser);
1931 /* entity-member declaration */
1932 if (!parser_next(parser) || parser->tok != TOKEN_TYPENAME) {
1933 parseerror(parser, "expected member variable definition");
1937 /* remember the base/return type */
1938 basetype = parser_token(parser)->constval.t;
1940 /* parse into the declaration */
1941 if (!parser_next(parser)) {
1942 parseerror(parser, "expected field def");
1946 /* parse the field type fully */
1947 var = parser_parse_type(parser, basetype, &isfunc);
1952 /* now the field name */
1953 if (parser->tok != TOKEN_IDENT) {
1954 parseerror(parser, "expected field name");
1959 /* check for an existing field
1960 * in original qc we also have to check for an existing
1961 * global named like the field
1963 if (opts_standard == COMPILER_QCC) {
1964 if (parser_find_global(parser, parser_tokval(parser))) {
1965 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
1970 if (parser_find_field(parser, parser_tokval(parser))) {
1971 parseerror(parser, "field %s already exists", parser_tokval(parser));
1976 /* if it was a function, turn it into a function */
1979 /* turn var into a value of TYPE_FUNCTION, with the old var
1982 fval = ast_value_new(ctx, var->name, TYPE_FUNCTION);
1984 ast_value_delete(var);
1985 ast_value_delete(fval);
1989 fval->expression.next = (ast_expression*)var;
1990 MEM_VECTOR_MOVE(&var->expression, params, &fval->expression, params);
1995 /* turn it into a field */
1996 fld = ast_value_new(ctx, parser_tokval(parser), TYPE_FIELD);
1997 fld->expression.next = (ast_expression*)var;
1999 varent.var = (ast_expression*)fld;
2000 varent.name = util_strdup(fld->name);
2001 (void)!parser_t_fields_add(parser, varent);
2003 if (var->expression.vtype == TYPE_VECTOR)
2005 /* create _x, _y and _z fields as well */
2007 varentry_t vx, vy, vz;
2009 len = strlen(varent.name);
2010 vx.var = (ast_expression*)ast_member_new(ast_ctx(fld), (ast_expression*)fld, 0);
2011 vy.var = (ast_expression*)ast_member_new(ast_ctx(fld), (ast_expression*)fld, 1);
2012 vz.var = (ast_expression*)ast_member_new(ast_ctx(fld), (ast_expression*)fld, 2);
2013 vx.name = (char*)mem_a(len+3);
2014 vy.name = (char*)mem_a(len+3);
2015 vz.name = (char*)mem_a(len+3);
2016 memcpy(vx.name, varent.name, len);
2017 memcpy(vy.name, varent.name, len);
2018 memcpy(vz.name, varent.name, len);
2019 vx.name[len] = vy.name[len] = vz.name[len] = '_';
2020 vx.name[len+1] = 'x';
2021 vy.name[len+1] = 'y';
2022 vz.name[len+1] = 'z';
2023 vx.name[len+2] = vy.name[len+2] = vz.name[len+2] = 0;
2024 (void)!parser_t_fields_add(parser, vx);
2025 (void)!parser_t_fields_add(parser, vy);
2026 (void)!parser_t_fields_add(parser, vz);
2029 if (!parser_next(parser)) {
2030 parseerror(parser, "expected semicolon or another field name");
2033 if (parser->tok == ';')
2035 if (parser->tok != ',' || !parser_next(parser)) {
2036 parseerror(parser, "expected semicolon or another field name");
2041 /* skip the semicolon */
2042 if (!parser_next(parser))
2043 return parser->tok == TOKEN_EOF;
2049 parseerror(parser, "unexpected token: %s", parser->lex->tok->value);
2055 static parser_t *parser;
2059 parser = (parser_t*)mem_a(sizeof(parser_t));
2063 memset(parser, 0, sizeof(*parser));
2067 bool parser_compile(const char *filename)
2069 parser->lex = lex_open(filename);
2071 printf("failed to open file \"%s\"\n", filename);
2075 /* initial lexer/parser state */
2076 parser->lex->flags.noops = true;
2078 if (parser_next(parser))
2080 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
2082 if (!parser_do(parser)) {
2083 if (parser->tok == TOKEN_EOF)
2084 parseerror(parser, "unexpected eof");
2085 else if (!parser->errors)
2086 parseerror(parser, "parse error\n");
2087 lex_close(parser->lex);
2094 lex_close(parser->lex);
2096 return !parser->errors;
2099 void parser_cleanup()
2102 for (i = 0; i < parser->functions_count; ++i) {
2103 ast_delete(parser->functions[i]);
2105 for (i = 0; i < parser->imm_vector_count; ++i) {
2106 ast_delete(parser->imm_vector[i]);
2108 for (i = 0; i < parser->imm_string_count; ++i) {
2109 ast_delete(parser->imm_string[i]);
2111 for (i = 0; i < parser->imm_float_count; ++i) {
2112 ast_delete(parser->imm_float[i]);
2114 for (i = 0; i < parser->globals_count; ++i) {
2115 ast_delete(parser->globals[i].var);
2116 mem_d(parser->globals[i].name);
2118 MEM_VECTOR_CLEAR(parser, globals);
2123 bool parser_finish(const char *output)
2128 if (!parser->errors)
2130 ir = ir_builder_new("gmqcc_out");
2132 printf("failed to allocate builder\n");
2136 for (i = 0; i < parser->imm_float_count; ++i) {
2137 if (!ast_global_codegen(parser->imm_float[i], ir)) {
2138 printf("failed to generate global %s\n", parser->imm_float[i]->name);
2139 ir_builder_delete(ir);
2143 for (i = 0; i < parser->imm_string_count; ++i) {
2144 if (!ast_global_codegen(parser->imm_string[i], ir)) {
2145 printf("failed to generate global %s\n", parser->imm_string[i]->name);
2146 ir_builder_delete(ir);
2150 for (i = 0; i < parser->imm_vector_count; ++i) {
2151 if (!ast_global_codegen(parser->imm_vector[i], ir)) {
2152 printf("failed to generate global %s\n", parser->imm_vector[i]->name);
2153 ir_builder_delete(ir);
2157 for (i = 0; i < parser->fields_count; ++i) {
2160 if (!ast_istype(parser->fields[i].var, ast_value))
2162 field = (ast_value*)parser->fields[i].var;
2163 isconst = field->isconst;
2164 field->isconst = false;
2165 if (!ast_global_codegen((ast_value*)field, ir)) {
2166 printf("failed to generate field %s\n", field->name);
2167 ir_builder_delete(ir);
2172 ast_expression *subtype;
2173 field->isconst = true;
2174 subtype = field->expression.next;
2175 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
2176 if (subtype->expression.vtype == TYPE_FIELD)
2177 ifld->fieldtype = subtype->expression.next->expression.vtype;
2178 else if (subtype->expression.vtype == TYPE_FUNCTION)
2179 ifld->outtype = subtype->expression.next->expression.vtype;
2180 (void)!ir_value_set_field(field->ir_v, ifld);
2183 for (i = 0; i < parser->globals_count; ++i) {
2184 if (!ast_istype(parser->globals[i].var, ast_value))
2186 if (!ast_global_codegen((ast_value*)(parser->globals[i].var), ir)) {
2187 printf("failed to generate global %s\n", parser->globals[i].name);
2188 ir_builder_delete(ir);
2192 for (i = 0; i < parser->functions_count; ++i) {
2193 if (!ast_function_codegen(parser->functions[i], ir)) {
2194 printf("failed to generate function %s\n", parser->functions[i]->name);
2195 ir_builder_delete(ir);
2198 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
2199 printf("failed to finalize function %s\n", parser->functions[i]->name);
2200 ir_builder_delete(ir);
2206 ir_builder_dump(ir, printf);
2208 if (!ir_builder_generate(ir, output)) {
2209 printf("*** failed to generate output file\n");
2210 ir_builder_delete(ir);
2214 ir_builder_delete(ir);
2218 printf("*** there were compile errors\n");