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);
30 MEM_VEC_FUNCTIONS(parser_t, varentry_t, globals)
31 MEM_VEC_FUNCTIONS(parser_t, varentry_t, fields)
32 MEM_VEC_FUNCTIONS(parser_t, ast_value*, imm_float)
33 MEM_VEC_FUNCTIONS(parser_t, ast_value*, imm_string)
34 MEM_VEC_FUNCTIONS(parser_t, ast_value*, imm_vector)
35 MEM_VEC_FUNCTIONS(parser_t, varentry_t, locals)
36 MEM_VEC_FUNCTIONS(parser_t, ast_function*, functions)
38 void parseerror(parser_t *parser, const char *fmt, ...)
45 printf("error %s:%lu: ", parser->lex->tok->ctx.file, (unsigned long)parser->lex->tok->ctx.line);
56 bool parser_next(parser_t *parser)
58 /* lex_do kills the previous token */
59 parser->tok = lex_do(parser->lex);
60 if (parser->tok == TOKEN_EOF || parser->tok >= TOKEN_ERROR)
65 /* lift a token out of the parser so it's not destroyed by parser_next */
66 token *parser_lift(parser_t *parser)
68 token *tok = parser->lex->tok;
69 parser->lex->tok = NULL;
73 #define parser_tokval(p) (p->lex->tok->value)
74 #define parser_token(p) (p->lex->tok)
75 #define parser_ctx(p) (p->lex->tok->ctx)
77 ast_value* parser_const_float(parser_t *parser, double d)
81 for (i = 0; i < parser->imm_float_count; ++i) {
82 if (parser->imm_float[i]->constval.vfloat == d)
83 return parser->imm_float[i];
85 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_FLOAT);
87 out->constval.vfloat = d;
88 if (!parser_t_imm_float_add(parser, out)) {
89 ast_value_delete(out);
95 ast_value* parser_const_string(parser_t *parser, const char *str)
99 for (i = 0; i < parser->imm_string_count; ++i) {
100 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
101 return parser->imm_string[i];
103 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
105 out->constval.vstring = util_strdup(str);
106 if (!parser_t_imm_string_add(parser, out)) {
107 ast_value_delete(out);
113 ast_value* parser_const_vector(parser_t *parser, vector v)
117 for (i = 0; i < parser->imm_vector_count; ++i) {
118 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
119 return parser->imm_vector[i];
121 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
123 out->constval.vvec = v;
124 if (!parser_t_imm_vector_add(parser, out)) {
125 ast_value_delete(out);
131 ast_expression* parser_find_field(parser_t *parser, const char *name)
134 for (i = 0; i < parser->fields_count; ++i) {
135 if (!strcmp(parser->fields[i].name, name))
136 return parser->fields[i].var;
141 ast_expression* parser_find_global(parser_t *parser, const char *name)
144 for (i = 0; i < parser->globals_count; ++i) {
145 if (!strcmp(parser->globals[i].name, name))
146 return parser->globals[i].var;
151 ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto)
155 for (i = parser->locals_count; i > upto;) {
157 if (!strcmp(parser->locals[i].name, name))
158 return parser->locals[i].var;
160 fun = parser->function->vtype;
161 for (i = 0; i < fun->expression.params_count; ++i) {
162 if (!strcmp(fun->expression.params[i]->name, name))
163 return (ast_expression*)(fun->expression.params[i]);
168 ast_expression* parser_find_var(parser_t *parser, const char *name)
171 v = parser_find_local(parser, name, 0);
172 if (!v) v = parser_find_global(parser, name);
177 MEM_VECTOR_MAKE(ast_value*, p);
179 MEM_VEC_FUNCTIONS(paramlist_t, ast_value*, p)
181 static ast_value *parser_parse_type(parser_t *parser, int basetype, bool *isfunc)
185 lex_ctx ctx = parser_ctx(parser);
186 int vtype = basetype;
190 MEM_VECTOR_INIT(¶ms, p);
194 if (parser->tok == '(') {
200 if (!parser_next(parser))
203 if (parser->tok == ')')
206 temptype = parser_token(parser)->constval.t;
207 if (!parser_next(parser))
210 param = parser_parse_type(parser, temptype, &dummy);
216 if (parser->tok == TOKEN_IDENT) {
217 /* named parameter */
218 if (!ast_value_set_name(param, parser_tokval(parser)))
220 if (!parser_next(parser))
224 if (!paramlist_t_p_add(¶ms, param)) {
225 parseerror(parser, "Out of memory while parsing typename");
229 if (parser->tok == ',')
231 if (parser->tok == ')')
233 parseerror(parser, "Unexpected token");
236 if (!parser_next(parser))
240 var = ast_value_new(ctx, "<unnamed>", vtype);
243 MEM_VECTOR_MOVE(¶ms, p, &var->expression, params);
246 for (i = 0; i < params.p_count; ++i)
247 ast_value_delete(params.p[i]);
248 MEM_VECTOR_CLEAR(¶ms, p);
254 size_t etype; /* 0 = expression, others are operators */
258 ast_block *block; /* for commas and function calls */
263 MEM_VECTOR_MAKE(sy_elem, out);
264 MEM_VECTOR_MAKE(sy_elem, ops);
266 MEM_VEC_FUNCTIONS(shunt, sy_elem, out)
267 MEM_VEC_FUNCTIONS(shunt, sy_elem, ops)
269 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
279 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
282 e.out = (ast_expression*)v;
289 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
291 e.etype = 1 + (op - operators);
299 static sy_elem syparen(lex_ctx ctx, int p, size_t off) {
310 static bool parser_sy_pop(parser_t *parser, shunt *sy)
314 ast_expression *out = NULL;
315 ast_expression *exprs[3];
316 ast_block *blocks[3];
319 if (!sy->ops_count) {
320 parseerror(parser, "internal error: missing operator");
324 if (sy->ops[sy->ops_count-1].paren) {
325 parseerror(parser, "unmatched parenthesis");
329 op = &operators[sy->ops[sy->ops_count-1].etype - 1];
330 ctx = sy->ops[sy->ops_count-1].ctx;
332 if (sy->out_count < op->operands) {
333 parseerror(parser, "internal error: not enough operands: %i", sy->out_count);
339 sy->out_count -= op->operands;
340 for (i = 0; i < op->operands; ++i) {
341 exprs[i] = sy->out[sy->out_count+i].out;
342 blocks[i] = sy->out[sy->out_count+i].block;
345 if (blocks[0] && !blocks[0]->exprs_count && op->id != opid1(',')) {
346 parseerror(parser, "internal error: operator cannot be applied on empty blocks");
353 parseerror(parser, "internal error: unhandled operand");
358 if (!ast_block_exprs_add(blocks[0], exprs[1]))
361 blocks[0] = ast_block_new(ctx);
362 if (!ast_block_exprs_add(blocks[0], exprs[0]) ||
363 !ast_block_exprs_add(blocks[0], exprs[1]))
368 if (!ast_block_set_type(blocks[0], exprs[1]))
371 sy->out[sy->out_count++] = syblock(ctx, blocks[0]);
375 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
376 parseerror(parser, "Cannot add type %s and %s",
377 type_name[exprs[0]->expression.vtype],
378 type_name[exprs[1]->expression.vtype]);
381 switch (exprs[0]->expression.vtype) {
383 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
386 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
389 parseerror(parser, "Cannot add type %s and %s",
390 type_name[exprs[0]->expression.vtype],
391 type_name[exprs[1]->expression.vtype]);
396 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
397 parseerror(parser, "Cannot subtract type %s from %s",
398 type_name[exprs[1]->expression.vtype],
399 type_name[exprs[0]->expression.vtype]);
402 switch (exprs[0]->expression.vtype) {
404 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
407 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
410 parseerror(parser, "Cannot add type %s from %s",
411 type_name[exprs[1]->expression.vtype],
412 type_name[exprs[0]->expression.vtype]);
417 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
418 exprs[0]->expression.vtype != TYPE_VECTOR &&
419 exprs[0]->expression.vtype != TYPE_FLOAT &&
420 exprs[1]->expression.vtype != TYPE_VECTOR &&
421 exprs[1]->expression.vtype != TYPE_FLOAT)
423 parseerror(parser, "Cannot multiply type %s from %s",
424 type_name[exprs[1]->expression.vtype],
425 type_name[exprs[0]->expression.vtype]);
428 switch (exprs[0]->expression.vtype) {
430 if (exprs[1]->expression.vtype == TYPE_VECTOR)
431 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
433 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
436 if (exprs[1]->expression.vtype == TYPE_FLOAT)
437 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
439 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
442 parseerror(parser, "Cannot add type %s from %s",
443 type_name[exprs[1]->expression.vtype],
444 type_name[exprs[0]->expression.vtype]);
449 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
450 exprs[0]->expression.vtype != TYPE_FLOAT)
452 parseerror(parser, "Cannot divide types %s and %s",
453 type_name[exprs[0]->expression.vtype],
454 type_name[exprs[1]->expression.vtype]);
457 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
462 out = (ast_expression*)ast_store_new(ctx,
463 type_store_instr[exprs[0]->expression.vtype],
469 parseerror(parser, "failed to apply operand %s", op->op);
473 sy->out[sy->out_count++] = syexp(ctx, out);
477 static bool parser_close_call(parser_t *parser, shunt *sy)
479 /* was a function call */
487 fid = sy->ops[sy->ops_count].off;
489 /* out[fid] is the function
490 * everything above is parameters...
492 * 1 params = ast_expression
496 if (sy->out_count < 1 || sy->out_count <= fid) {
497 parseerror(parser, "internal error: function call needs function and parameter list...");
501 fun = sy->out[fid].out;
503 call = ast_call_new(sy->ops[sy->ops_count].ctx, fun);
505 parseerror(parser, "out of memory");
509 if (fid+1 == sy->out_count) {
512 } else if (fid+2 == sy->out_count) {
515 params = sy->out[sy->out_count].block;
519 if (!ast_call_params_add(call, sy->out[sy->out_count].out)) {
520 ast_delete(sy->out[sy->out_count].out);
521 parseerror(parser, "out of memory");
525 paramcount = params->exprs_count;
526 MEM_VECTOR_MOVE(params, exprs, call, params);
530 parseerror(parser, "invalid function call");
534 /* overwrite fid, the function, with a call */
535 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
537 if (fun->expression.vtype != TYPE_FUNCTION) {
538 parseerror(parser, "not a function");
542 if (!fun->expression.next) {
543 parseerror(parser, "could not determine function return type");
546 if (fun->expression.params_count != paramcount) {
547 parseerror(parser, "expected %i parameters, got %i", (int)fun->expression.params_count, paramcount);
555 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
557 if (!sy->ops_count) {
558 parseerror(parser, "unmatched closing paren");
561 if (sy->ops[sy->ops_count-1].paren == 1) {
562 parseerror(parser, "empty parenthesis expression");
565 while (sy->ops_count) {
566 if (sy->ops[sy->ops_count-1].paren == 'f') {
567 if (!parser_close_call(parser, sy))
571 if (sy->ops[sy->ops_count-1].paren == 1) {
573 return !functions_only;
575 if (!parser_sy_pop(parser, sy))
581 static ast_expression* parser_expression(parser_t *parser)
583 ast_expression *expr = NULL;
587 /* count the parens because an if starts with one, so the
588 * end of a condition is an unmatched closing paren
592 MEM_VECTOR_INIT(&sy, out);
593 MEM_VECTOR_INIT(&sy, ops);
599 bool nextwant = true;
600 if (parser->tok == TOKEN_IDENT)
603 ast_expression *var = parser_find_var(parser, parser_tokval(parser));
604 /* in the gmqcc standard, fields are in their own namespace */
605 if (!var && opts_standard != COMPILER_GMQCC)
606 var = parser_find_field(parser, parser_tokval(parser));
608 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
611 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), var))) {
612 parseerror(parser, "out of memory");
616 else if (parser->tok == TOKEN_FLOATCONST) {
617 ast_value *val = parser_const_float(parser, (parser_token(parser)->constval.f));
620 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
621 parseerror(parser, "out of memory");
625 else if (parser->tok == TOKEN_INTCONST) {
626 ast_value *val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
629 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
630 parseerror(parser, "out of memory");
634 else if (parser->tok == TOKEN_STRINGCONST) {
635 ast_value *val = parser_const_string(parser, parser_tokval(parser));
638 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
639 parseerror(parser, "out of memory");
643 else if (parser->tok == TOKEN_VECTORCONST) {
644 ast_value *val = parser_const_vector(parser, parser_token(parser)->constval.v);
647 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
648 parseerror(parser, "out of memory");
652 else if (parser->tok == '(') {
654 nextwant = false; /* not expecting an operator next */
655 if (!shunt_ops_add(&sy, syparen(parser_ctx(parser), 1, 0))) {
656 parseerror(parser, "out of memory");
660 else if (parser->tok == ')') {
664 /* allowed for function calls */
665 if (!parser_close_paren(parser, &sy, true))
669 /* TODO: prefix operators */
670 parseerror(parser, "expected statement");
674 parser->lex->flags.noops = !wantop;
676 if (parser->tok == '(') {
678 /* we expected an operator, this is the function-call operator */
679 if (!shunt_ops_add(&sy, syparen(parser_ctx(parser), 'f', sy.out_count-1))) {
680 parseerror(parser, "out of memory");
684 else if (parser->tok == ')') {
688 /* we do expect an operator next */
689 /* closing an opening paren */
690 if (!parser_close_paren(parser, &sy, false))
693 else if (parser->tok != TOKEN_OPERATOR) {
694 parseerror(parser, "expected operator or end of statement");
698 /* classify the operator */
699 /* TODO: suffix operators */
701 const oper_info *olast = NULL;
703 for (o = 0; o < operator_count; ++o) {
704 if (!(operators[o].flags & OP_PREFIX) &&
705 !(operators[o].flags & OP_SUFFIX) && /* remove this */
706 !strcmp(parser_tokval(parser), operators[o].op))
711 if (o == operator_count) {
712 /* no operator found... must be the end of the statement */
715 /* found an operator */
718 if (sy.ops_count && !sy.ops[sy.ops_count-1].paren)
719 olast = &operators[sy.ops[sy.ops_count-1].etype-1];
722 (op->prec < olast->prec) ||
723 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
725 if (!parser_sy_pop(parser, &sy))
727 if (sy.ops_count && !sy.ops[sy.ops_count-1].paren)
728 olast = &operators[sy.ops[sy.ops_count-1].etype-1];
731 if (!shunt_ops_add(&sy, syop(parser_ctx(parser), op)))
735 parser->lex->flags.noops = true;
737 if (!parser_next(parser)) {
740 if (parser->tok == ';') {
744 if (parens >= 0 && !parser_next(parser)) {
745 parseerror(parser, "Unexpected end of file");
749 while (sy.ops_count) {
750 if (!parser_sy_pop(parser, &sy))
754 parser->lex->flags.noops = true;
756 parseerror(parser, "empty expression");
759 expr = sy.out[0].out;
760 MEM_VECTOR_CLEAR(&sy, out);
761 MEM_VECTOR_CLEAR(&sy, ops);
765 parser->lex->flags.noops = true;
766 MEM_VECTOR_CLEAR(&sy, out);
767 MEM_VECTOR_CLEAR(&sy, ops);
771 static bool parser_variable(parser_t *parser, ast_block *localblock);
772 static ast_block* parser_parse_block(parser_t *parser);
773 static ast_expression* parser_parse_statement_or_block(parser_t *parser);
774 static bool parser_parse_statement(parser_t *parser, ast_block *block, ast_expression **out)
776 if (parser->tok == TOKEN_TYPENAME)
780 parseerror(parser, "cannot declare a variable from here");
783 if (!parser_variable(parser, block))
788 else if (parser->tok == TOKEN_KEYWORD)
790 if (!strcmp(parser_tokval(parser), "return"))
792 ast_expression *exp = NULL;
793 ast_return *ret = NULL;
794 ast_value *expected = parser->function->vtype;
796 if (!parser_next(parser)) {
797 parseerror(parser, "expected return expression");
801 if (parser->tok != ';') {
802 exp = parser_expression(parser);
806 if (exp->expression.vtype != expected->expression.next->expression.vtype) {
807 parseerror(parser, "return with invalid expression");
810 ret = ast_return_new(exp->expression.node.context, exp);
816 *out = (ast_expression*)ret;
817 } else if (!parser_next(parser)) {
818 parseerror(parser, "expected semicolon");
819 if (expected->expression.next->expression.vtype != TYPE_VOID) {
820 parseerror(parser, "return without value");
825 else if (!strcmp(parser_tokval(parser), "if"))
828 ast_expression *cond, *ontrue, *onfalse = NULL;
830 lex_ctx ctx = parser_ctx(parser);
832 /* skip the 'if' and check for opening paren */
833 if (!parser_next(parser) || parser->tok != '(') {
834 parseerror(parser, "expected 'if' condition in parenthesis");
837 /* parse into the expression */
838 if (!parser_next(parser)) {
839 parseerror(parser, "expected 'if' condition after opening paren");
842 /* parse the condition */
843 cond = parser_expression(parser);
847 if (parser->tok != ')') {
848 parseerror(parser, "expected closing paren after 'if' condition");
852 /* parse into the 'then' branch */
853 if (!parser_next(parser)) {
854 parseerror(parser, "expected statement for on-true branch of 'if'");
858 ontrue = parser_parse_statement_or_block(parser);
863 /* check for an else */
864 if (!strcmp(parser_tokval(parser), "else")) {
865 /* parse into the 'else' branch */
866 if (!parser_next(parser)) {
867 parseerror(parser, "expected on-false branch after 'else'");
872 onfalse = parser_parse_statement_or_block(parser);
880 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
881 *out = (ast_expression*)ifthen;
884 parseerror(parser, "Unexpected keyword");
887 else if (parser->tok == '{')
890 inner = parser_parse_block(parser);
893 *out = (ast_expression*)inner;
898 ast_expression *exp = parser_expression(parser);
906 static void parser_pop_local(parser_t *parser)
908 parser->locals_count--;
909 mem_d(parser->locals[parser->locals_count].name);
912 static ast_block* parser_parse_block(parser_t *parser)
914 size_t oldblocklocal;
915 ast_block *block = NULL;
917 oldblocklocal = parser->blocklocal;
918 parser->blocklocal = parser->locals_count;
920 if (!parser_next(parser)) { /* skip the '{' */
921 parseerror(parser, "expected function body");
925 block = ast_block_new(parser_ctx(parser));
927 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
929 ast_expression *expr;
930 if (parser->tok == '}')
933 if (!parser_parse_statement(parser, block, &expr)) {
934 ast_block_delete(block);
940 if (!ast_block_exprs_add(block, expr)) {
942 ast_block_delete(block);
948 if (parser->tok != '}') {
949 ast_block_delete(block);
952 (void)parser_next(parser);
956 while (parser->locals_count > parser->blocklocal)
957 parser_pop_local(parser);
958 parser->blocklocal = oldblocklocal;
959 /* unroll the local vector */
963 static ast_expression* parser_parse_statement_or_block(parser_t *parser)
965 ast_expression *expr;
966 if (parser->tok == '{')
967 return (ast_expression*)parser_parse_block(parser);
968 if (!parser_parse_statement(parser, NULL, &expr))
973 static bool parser_variable(parser_t *parser, ast_block *localblock)
976 ast_function *func = NULL;
981 int basetype = parser_token(parser)->constval.t;
985 if (!parser_next(parser)) { /* skip basetype or comma */
986 parseerror(parser, "expected variable declaration");
992 ctx = parser_ctx(parser);
993 var = parser_parse_type(parser, basetype, &isfunc);
998 if (parser->tok != TOKEN_IDENT) {
999 parseerror(parser, "expected variable name\n");
1003 if (!localblock && parser_find_global(parser, parser_tokval(parser))) {
1004 ast_value_delete(var);
1005 parseerror(parser, "global already exists: %s\n", parser_tokval(parser));
1009 if (localblock && parser_find_local(parser, parser_tokval(parser), parser->blocklocal)) {
1010 ast_value_delete(var);
1011 parseerror(parser, "local variable already exists: %s\n", parser_tokval(parser));
1015 if (!ast_value_set_name(var, parser_tokval(parser))) {
1016 parseerror(parser, "failed to set variable name\n");
1017 ast_value_delete(var);
1022 /* a function was defined */
1025 /* turn var into a value of TYPE_FUNCTION, with the old var
1028 fval = ast_value_new(ctx, var->name, TYPE_FUNCTION);
1029 func = ast_function_new(ctx, var->name, fval);
1030 if (!fval || !func) {
1031 ast_value_delete(var);
1032 if (fval) ast_value_delete(fval);
1033 if (func) ast_function_delete(func);
1037 fval->expression.next = (ast_expression*)var;
1038 MEM_VECTOR_MOVE(&var->expression, params, &fval->expression, params);
1040 if (!parser_t_functions_add(parser, func)) {
1041 ast_value_delete(var);
1042 if (fval) ast_value_delete(fval);
1043 if (func) ast_function_delete(func);
1050 varent.name = util_strdup(var->name);
1051 varent.var = (ast_expression*)var;
1052 if (var->expression.vtype == TYPE_VECTOR)
1054 size_t len = strlen(varent.name);
1055 varentry_t vx, vy, vz;
1056 vx.var = (ast_expression*)ast_member_new(var->expression.node.context, (ast_expression*)var, 0);
1057 vy.var = (ast_expression*)ast_member_new(var->expression.node.context, (ast_expression*)var, 1);
1058 vz.var = (ast_expression*)ast_member_new(var->expression.node.context, (ast_expression*)var, 2);
1059 vx.name = mem_a(len+3);
1060 vy.name = mem_a(len+3);
1061 vz.name = mem_a(len+3);
1062 strcpy(vx.name, varent.name);
1063 strcpy(vy.name, varent.name);
1064 strcpy(vz.name, varent.name);
1065 vx.name[len] = vy.name[len] = vz.name[len] = '_';
1066 vx.name[len+1] = 'x';
1067 vy.name[len+1] = 'y';
1068 vz.name[len+1] = 'z';
1069 vx.name[len+2] = vy.name[len+2] = vz.name[len+2] = 0;
1072 (void)!parser_t_globals_add(parser, varent);
1073 (void)!parser_t_globals_add(parser, vx);
1074 (void)!parser_t_globals_add(parser, vy);
1075 (void)!parser_t_globals_add(parser, vz);
1077 (void)!parser_t_locals_add(parser, varent);
1078 (void)!parser_t_locals_add(parser, vx);
1079 (void)!parser_t_locals_add(parser, vy);
1080 (void)!parser_t_locals_add(parser, vz);
1085 if ( (!localblock && !parser_t_globals_add(parser, varent)) ||
1086 ( localblock && !parser_t_locals_add(parser, varent)) )
1088 ast_value_delete(var);
1092 if (localblock && !ast_block_locals_add(localblock, var))
1094 parser_pop_local(parser);
1095 ast_value_delete(var);
1099 if (!parser_next(parser)) {
1100 ast_value_delete(var);
1104 if (parser->tok == ';') {
1105 if (!parser_next(parser))
1106 return parser->tok == TOKEN_EOF;
1110 if (parser->tok == ',') {
1115 if (parser->tok != '=') {
1116 parseerror(parser, "expected '=' or ';'");
1120 if (!parser_next(parser))
1123 if (parser->tok == '#') {
1125 parseerror(parser, "cannot declare builtins within functions");
1128 if (!isfunc || !func) {
1129 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
1132 if (!parser_next(parser)) {
1133 parseerror(parser, "expected builtin number");
1136 if (parser->tok != TOKEN_INTCONST) {
1137 parseerror(parser, "builtin number must be an integer constant");
1140 if (parser_token(parser)->constval.i <= 0) {
1141 parseerror(parser, "builtin number must be positive integer greater than zero");
1145 func->builtin = -parser_token(parser)->constval.i;
1146 } else if (parser->tok == '{') {
1149 ast_function *old = parser->function;
1152 parseerror(parser, "cannot declare functions within functions");
1156 parser->function = func;
1157 block = parser_parse_block(parser);
1158 parser->function = old;
1163 if (!ast_function_blocks_add(func, block)) {
1164 ast_block_delete(block);
1169 parseerror(parser, "TODO, const assignment");
1172 if (!parser_next(parser))
1175 if (parser->tok == ',') {
1180 if (parser->tok != ';') {
1181 parseerror(parser, "expected semicolon");
1185 (void)parser_next(parser);
1191 static bool parser_do(parser_t *parser)
1193 if (parser->tok == TOKEN_TYPENAME)
1195 return parser_variable(parser, NULL);
1197 else if (parser->tok == TOKEN_KEYWORD)
1199 /* handle 'var' and 'const' */
1202 else if (parser->tok == '.')
1206 bool isfunc = false;
1208 lex_ctx ctx = parser_ctx(parser);
1211 /* entity-member declaration */
1212 if (!parser_next(parser) || parser->tok != TOKEN_TYPENAME) {
1213 parseerror(parser, "expected member variable definition");
1217 /* remember the base/return type */
1218 basetype = parser_token(parser)->constval.t;
1220 /* parse into the declaration */
1221 if (!parser_next(parser)) {
1222 parseerror(parser, "expected field def");
1226 /* parse the field type fully */
1227 var = parser_parse_type(parser, basetype, &isfunc);
1231 /* now the field name */
1232 if (parser->tok != TOKEN_IDENT) {
1233 parseerror(parser, "expected field name");
1238 /* check for an existing field
1239 * in original qc we also have to check for an existing
1240 * global named like the field
1242 if (opts_standard == COMPILER_QCC) {
1243 if (parser_find_global(parser, parser_tokval(parser))) {
1244 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
1249 if (parser_find_field(parser, parser_tokval(parser))) {
1250 parseerror(parser, "field %s already exists", parser_tokval(parser));
1255 /* if it was a function, turn it into a function */
1258 /* turn var into a value of TYPE_FUNCTION, with the old var
1261 fval = ast_value_new(ctx, var->name, TYPE_FUNCTION);
1263 ast_value_delete(var);
1264 ast_value_delete(fval);
1268 fval->expression.next = (ast_expression*)var;
1269 MEM_VECTOR_MOVE(&var->expression, params, &fval->expression, params);
1274 /* turn it into a field */
1275 fld = ast_value_new(ctx, parser_tokval(parser), TYPE_FIELD);
1276 fld->expression.next = (ast_expression*)var;
1278 varent.var = (ast_expression*)fld;
1279 if (var->expression.vtype == TYPE_VECTOR)
1281 /* create _x, _y and _z fields as well */
1282 parseerror(parser, "TODO: vector field members (_x,_y,_z)");
1287 varent.name = util_strdup(fld->name);
1288 (void)!parser_t_fields_add(parser, varent);
1290 /* end with a semicolon */
1291 if (!parser_next(parser) || parser->tok != ';') {
1292 parseerror(parser, "semicolon expected");
1296 /* skip the semicolon */
1297 if (!parser_next(parser))
1298 return parser->tok == TOKEN_EOF;
1304 parseerror(parser, "unexpected token: %s", parser->lex->tok->value);
1310 static parser_t *parser;
1314 parser = (parser_t*)mem_a(sizeof(parser_t));
1318 memset(parser, 0, sizeof(parser));
1320 MEM_VECTOR_INIT(parser, globals);
1321 MEM_VECTOR_INIT(parser, locals);
1325 bool parser_compile(const char *filename)
1327 parser->lex = lex_open(filename);
1329 printf("failed to open file \"%s\"\n", filename);
1333 /* initial lexer/parser state */
1334 parser->lex->flags.noops = true;
1336 if (parser_next(parser))
1338 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
1340 if (!parser_do(parser)) {
1341 if (parser->tok == TOKEN_EOF)
1342 parseerror(parser, "unexpected eof");
1344 parseerror(parser, "parse error\n");
1345 lex_close(parser->lex);
1352 lex_close(parser->lex);
1354 return !parser->errors;
1357 void parser_cleanup()
1360 for (i = 0; i < parser->functions_count; ++i) {
1361 ast_delete(parser->functions[i]);
1363 for (i = 0; i < parser->imm_vector_count; ++i) {
1364 ast_delete(parser->imm_vector[i]);
1366 for (i = 0; i < parser->imm_string_count; ++i) {
1367 ast_delete(parser->imm_string[i]);
1369 for (i = 0; i < parser->imm_float_count; ++i) {
1370 ast_delete(parser->imm_float[i]);
1372 for (i = 0; i < parser->globals_count; ++i) {
1373 ast_delete(parser->globals[i].var);
1374 mem_d(parser->globals[i].name);
1376 MEM_VECTOR_CLEAR(parser, globals);
1381 bool parser_finish(const char *output)
1386 if (!parser->errors)
1388 ir = ir_builder_new("gmqcc_out");
1390 printf("failed to allocate builder\n");
1394 for (i = 0; i < parser->imm_float_count; ++i) {
1395 if (!ast_global_codegen(parser->imm_float[i], ir)) {
1396 printf("failed to generate global %s\n", parser->imm_float[i]->name);
1397 ir_builder_delete(ir);
1401 for (i = 0; i < parser->imm_string_count; ++i) {
1402 if (!ast_global_codegen(parser->imm_string[i], ir)) {
1403 printf("failed to generate global %s\n", parser->imm_string[i]->name);
1404 ir_builder_delete(ir);
1408 for (i = 0; i < parser->imm_vector_count; ++i) {
1409 if (!ast_global_codegen(parser->imm_vector[i], ir)) {
1410 printf("failed to generate global %s\n", parser->imm_vector[i]->name);
1411 ir_builder_delete(ir);
1415 for (i = 0; i < parser->fields_count; ++i) {
1418 if (!ast_istype(parser->fields[i].var, ast_value))
1420 field = (ast_value*)parser->fields[i].var;
1421 isconst = field->isconst;
1422 field->isconst = false;
1423 if (!ast_global_codegen((ast_value*)field, ir)) {
1424 printf("failed to generate field %s\n", field->name);
1425 ir_builder_delete(ir);
1430 ast_expression *subtype;
1431 field->isconst = true;
1432 subtype = field->expression.next;
1433 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
1434 if (subtype->expression.vtype == TYPE_FIELD)
1435 ifld->fieldtype = subtype->expression.next->expression.vtype;
1436 else if (subtype->expression.vtype == TYPE_FUNCTION)
1437 ifld->outtype = subtype->expression.next->expression.vtype;
1438 (void)!ir_value_set_field(field->ir_v, ifld);
1441 for (i = 0; i < parser->globals_count; ++i) {
1442 if (!ast_istype(parser->globals[i].var, ast_value))
1444 if (!ast_global_codegen((ast_value*)(parser->globals[i].var), ir)) {
1445 printf("failed to generate global %s\n", parser->globals[i].name);
1446 ir_builder_delete(ir);
1450 for (i = 0; i < parser->functions_count; ++i) {
1451 if (!ast_function_codegen(parser->functions[i], ir)) {
1452 printf("failed to generate function %s\n", parser->functions[i]->name);
1453 ir_builder_delete(ir);
1456 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
1457 printf("failed to finalize function %s\n", parser->functions[i]->name);
1458 ir_builder_delete(ir);
1463 ir_builder_dump(ir, printf);
1465 if (!ir_builder_generate(ir, output)) {
1466 printf("*** failed to generate output file\n");
1467 ir_builder_delete(ir);
1471 ir_builder_delete(ir);
1475 printf("*** there were compile errors\n");