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 == '(') {
296 bool isfield = false;
299 if (!parser_next(parser))
302 if (parser->tok == ')')
305 if (parser->tok == '.') {
307 if (!parser_next(parser)) {
308 parseerror(parser, "expected field parameter type");
313 temptype = parser_token(parser)->constval.t;
314 if (!parser_next(parser))
317 param = parser_parse_type(parser, temptype, &dummy);
323 if (parser->tok == TOKEN_IDENT) {
324 /* named parameter */
325 if (!ast_value_set_name(param, parser_tokval(parser)))
327 if (!parser_next(parser))
332 fld = ast_value_new(ctx, param->name, TYPE_FIELD);
333 fld->expression.next = (ast_expression*)param;
337 if (!paramlist_t_p_add(¶ms, param)) {
338 parseerror(parser, "Out of memory while parsing typename");
342 if (parser->tok == ',')
344 if (parser->tok == ')')
346 parseerror(parser, "Unexpected token");
349 if (!parser_next(parser))
353 var = ast_value_new(ctx, "<unnamed>", vtype);
356 MEM_VECTOR_MOVE(¶ms, p, &var->expression, params);
359 for (i = 0; i < params.p_count; ++i)
360 ast_value_delete(params.p[i]);
361 MEM_VECTOR_CLEAR(¶ms, p);
367 size_t etype; /* 0 = expression, others are operators */
371 ast_block *block; /* for commas and function calls */
376 MEM_VECTOR_MAKE(sy_elem, out);
377 MEM_VECTOR_MAKE(sy_elem, ops);
379 MEM_VEC_FUNCTIONS(shunt, sy_elem, out)
380 MEM_VEC_FUNCTIONS(shunt, sy_elem, ops)
382 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
392 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
395 e.out = (ast_expression*)v;
402 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
404 e.etype = 1 + (op - operators);
412 static sy_elem syparen(lex_ctx ctx, int p, size_t off) {
424 # define DEBUGSHUNTDO(x) x
426 # define DEBUGSHUNTDO(x)
429 static bool parser_sy_pop(parser_t *parser, shunt *sy)
433 ast_expression *out = NULL;
434 ast_expression *exprs[3];
435 ast_block *blocks[3];
436 ast_value *asvalue[3];
438 qcint generated_op = 0;
440 if (!sy->ops_count) {
441 parseerror(parser, "internal error: missing operator");
445 if (sy->ops[sy->ops_count-1].paren) {
446 parseerror(parser, "unmatched parenthesis");
450 op = &operators[sy->ops[sy->ops_count-1].etype - 1];
451 ctx = sy->ops[sy->ops_count-1].ctx;
453 DEBUGSHUNTDO(printf("apply %s\n", op->op));
455 if (sy->out_count < op->operands) {
456 parseerror(parser, "internal error: not enough operands: %i (operator %s (%i))", sy->out_count,
457 op->op, (int)op->id);
463 sy->out_count -= op->operands;
464 for (i = 0; i < op->operands; ++i) {
465 exprs[i] = sy->out[sy->out_count+i].out;
466 blocks[i] = sy->out[sy->out_count+i].block;
467 asvalue[i] = (ast_value*)exprs[i];
470 if (blocks[0] && !blocks[0]->exprs_count && op->id != opid1(',')) {
471 parseerror(parser, "internal error: operator cannot be applied on empty blocks");
475 #define NotSameType(T) \
476 (exprs[0]->expression.vtype != exprs[1]->expression.vtype || \
477 exprs[0]->expression.vtype != T)
478 #define CanConstFold1(A) \
479 (ast_istype((A), ast_value) && ((ast_value*)(A))->isconst)
480 #define CanConstFold(A, B) \
481 (CanConstFold1(A) && CanConstFold1(B))
482 #define ConstV(i) (asvalue[(i)]->constval.vvec)
483 #define ConstF(i) (asvalue[(i)]->constval.vfloat)
484 #define ConstS(i) (asvalue[(i)]->constval.vstring)
488 parseerror(parser, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
492 if (exprs[0]->expression.vtype == TYPE_ENTITY) {
493 if (exprs[1]->expression.vtype != TYPE_FIELD) {
494 parseerror(parser, "type error: right hand of member-operand should be an entity-field");
497 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
499 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
500 parseerror(parser, "internal error: vector access is not supposed to be handled at this point");
504 parseerror(parser, "type error: member-of operator on something that is not an entity or vector");
511 if (!ast_block_exprs_add(blocks[0], exprs[1]))
514 blocks[0] = ast_block_new(ctx);
515 if (!ast_block_exprs_add(blocks[0], exprs[0]) ||
516 !ast_block_exprs_add(blocks[0], exprs[1]))
521 if (!ast_block_set_type(blocks[0], exprs[1]))
524 sy->out[sy->out_count++] = syblock(ctx, blocks[0]);
528 switch (exprs[0]->expression.vtype) {
530 if (CanConstFold1(exprs[0]))
531 out = (ast_expression*)parser_const_float(parser, -ConstF(0));
533 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
534 (ast_expression*)parser_const_float_0(parser),
538 if (CanConstFold1(exprs[0]))
539 out = (ast_expression*)parser_const_vector_f(parser,
540 -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
542 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
543 (ast_expression*)parser_const_vector_0(parser),
547 parseerror(parser, "invalid types used in expression: cannot negate type %s",
548 type_name[exprs[0]->expression.vtype]);
554 switch (exprs[0]->expression.vtype) {
556 if (CanConstFold1(exprs[0]))
557 out = (ast_expression*)parser_const_float(parser, !ConstF(0));
559 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
562 if (CanConstFold1(exprs[0]))
563 out = (ast_expression*)parser_const_float(parser,
564 (!ConstV(0).x && !ConstV(0).y && !ConstV(0).z));
566 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
569 if (CanConstFold1(exprs[0]))
570 out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
572 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
574 /* we don't constant-fold NOT for these types */
576 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
579 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
582 parseerror(parser, "invalid types used in expression: cannot logically negate type %s",
583 type_name[exprs[0]->expression.vtype]);
589 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
590 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
592 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
593 type_name[exprs[0]->expression.vtype],
594 type_name[exprs[1]->expression.vtype]);
597 switch (exprs[0]->expression.vtype) {
599 if (CanConstFold(exprs[0], exprs[1]))
601 out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
604 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
607 if (CanConstFold(exprs[0], exprs[1]))
608 out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
610 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
613 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
614 type_name[exprs[0]->expression.vtype],
615 type_name[exprs[1]->expression.vtype]);
620 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
621 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
623 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
624 type_name[exprs[1]->expression.vtype],
625 type_name[exprs[0]->expression.vtype]);
628 switch (exprs[0]->expression.vtype) {
630 if (CanConstFold(exprs[0], exprs[1]))
631 out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
633 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
636 if (CanConstFold(exprs[0], exprs[1]))
637 out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
639 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
642 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
643 type_name[exprs[1]->expression.vtype],
644 type_name[exprs[0]->expression.vtype]);
649 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
650 exprs[0]->expression.vtype != TYPE_VECTOR &&
651 exprs[0]->expression.vtype != TYPE_FLOAT &&
652 exprs[1]->expression.vtype != TYPE_VECTOR &&
653 exprs[1]->expression.vtype != TYPE_FLOAT)
655 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
656 type_name[exprs[1]->expression.vtype],
657 type_name[exprs[0]->expression.vtype]);
660 switch (exprs[0]->expression.vtype) {
662 if (exprs[1]->expression.vtype == TYPE_VECTOR)
664 if (CanConstFold(exprs[0], exprs[1]))
665 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
667 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
671 if (CanConstFold(exprs[0], exprs[1]))
672 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
674 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
678 if (exprs[1]->expression.vtype == TYPE_FLOAT)
680 if (CanConstFold(exprs[0], exprs[1]))
681 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
683 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
687 if (CanConstFold(exprs[0], exprs[1]))
688 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
690 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
694 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
695 type_name[exprs[1]->expression.vtype],
696 type_name[exprs[0]->expression.vtype]);
701 if (NotSameType(TYPE_FLOAT)) {
702 parseerror(parser, "invalid types used in expression: cannot divide types %s and %s",
703 type_name[exprs[0]->expression.vtype],
704 type_name[exprs[1]->expression.vtype]);
707 if (CanConstFold(exprs[0], exprs[1]))
708 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
710 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
714 parseerror(parser, "qc does not have a modulo operator");
718 if (NotSameType(TYPE_FLOAT)) {
719 parseerror(parser, "invalid types used in expression: cannot perform bit operations between types %s and %s",
720 type_name[exprs[0]->expression.vtype],
721 type_name[exprs[1]->expression.vtype]);
724 if (CanConstFold(exprs[0], exprs[1]))
725 out = (ast_expression*)parser_const_float(parser,
726 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
727 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
729 out = (ast_expression*)ast_binary_new(ctx,
730 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
734 parseerror(parser, "TODO: bitxor");
739 case opid3('<','<','='):
740 case opid3('>','>','='):
741 parseerror(parser, "TODO: shifts");
745 generated_op += 1; /* INSTR_OR */
747 generated_op += INSTR_AND;
748 if (NotSameType(TYPE_FLOAT)) {
749 parseerror(parser, "invalid types used in expression: cannot perform logical operations between types %s and %s",
750 type_name[exprs[0]->expression.vtype],
751 type_name[exprs[1]->expression.vtype]);
752 parseerror(parser, "TODO: logical ops for arbitrary types using INSTR_NOT");
753 parseerror(parser, "TODO: optional early out");
756 if (opts_standard == COMPILER_GMQCC)
757 printf("TODO: early out logic\n");
758 if (CanConstFold(exprs[0], exprs[1]))
759 out = (ast_expression*)parser_const_float(parser,
760 (generated_op == INSTR_OR ? (ConstF(0) || ConstF(1)) : (ConstF(0) && ConstF(1))));
762 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
766 generated_op += 1; /* INSTR_GT */
768 generated_op += 1; /* INSTR_LT */
769 case opid2('>', '='):
770 generated_op += 1; /* INSTR_GE */
771 case opid2('<', '='):
772 generated_op += INSTR_LE;
773 if (NotSameType(TYPE_FLOAT)) {
774 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
775 type_name[exprs[0]->expression.vtype],
776 type_name[exprs[1]->expression.vtype]);
779 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
781 case opid2('!', '='):
782 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
783 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
784 type_name[exprs[0]->expression.vtype],
785 type_name[exprs[1]->expression.vtype]);
788 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
790 case opid2('=', '='):
791 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
792 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
793 type_name[exprs[0]->expression.vtype],
794 type_name[exprs[1]->expression.vtype]);
797 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
801 if (ast_istype(exprs[0], ast_entfield))
802 assignop = type_storep_instr[exprs[0]->expression.vtype];
804 assignop = type_store_instr[exprs[0]->expression.vtype];
805 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
809 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
810 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
812 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
813 type_name[exprs[0]->expression.vtype],
814 type_name[exprs[1]->expression.vtype]);
817 if (ast_istype(exprs[0], ast_entfield))
818 assignop = type_storep_instr[exprs[0]->expression.vtype];
820 assignop = type_store_instr[exprs[0]->expression.vtype];
821 switch (exprs[0]->expression.vtype) {
823 out = (ast_expression*)ast_binstore_new(ctx, assignop,
824 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
828 out = (ast_expression*)ast_binstore_new(ctx, assignop,
829 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
833 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
834 type_name[exprs[0]->expression.vtype],
835 type_name[exprs[1]->expression.vtype]);
843 parseerror(parser, "failed to apply operand %s", op->op);
847 DEBUGSHUNTDO(printf("applied %s\n", op->op));
848 sy->out[sy->out_count++] = syexp(ctx, out);
852 static bool parser_close_call(parser_t *parser, shunt *sy)
854 /* was a function call */
862 fid = sy->ops[sy->ops_count].off;
864 /* out[fid] is the function
865 * everything above is parameters...
867 * 1 params = ast_expression
871 if (sy->out_count < 1 || sy->out_count <= fid) {
872 parseerror(parser, "internal error: function call needs function and parameter list...");
876 fun = sy->out[fid].out;
878 call = ast_call_new(sy->ops[sy->ops_count].ctx, fun);
880 parseerror(parser, "out of memory");
884 if (fid+1 == sy->out_count) {
887 } else if (fid+2 == sy->out_count) {
890 params = sy->out[sy->out_count].block;
894 if (!ast_call_params_add(call, sy->out[sy->out_count].out)) {
895 ast_delete(sy->out[sy->out_count].out);
896 parseerror(parser, "out of memory");
900 paramcount = params->exprs_count;
901 MEM_VECTOR_MOVE(params, exprs, call, params);
905 parseerror(parser, "invalid function call");
909 /* overwrite fid, the function, with a call */
910 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
912 if (fun->expression.vtype != TYPE_FUNCTION) {
913 parseerror(parser, "not a function");
917 if (!fun->expression.next) {
918 parseerror(parser, "could not determine function return type");
921 if (fun->expression.params_count != paramcount) {
922 parseerror(parser, "expected %i parameters, got %i", (int)fun->expression.params_count, paramcount);
930 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
932 if (!sy->ops_count) {
933 parseerror(parser, "unmatched closing paren");
936 if (sy->ops[sy->ops_count-1].paren == 1) {
937 parseerror(parser, "empty parenthesis expression");
940 while (sy->ops_count) {
941 if (sy->ops[sy->ops_count-1].paren == 'f') {
942 if (!parser_close_call(parser, sy))
946 if (sy->ops[sy->ops_count-1].paren == 1) {
948 return !functions_only;
950 if (!parser_sy_pop(parser, sy))
956 static void parser_reclassify_token(parser_t *parser)
959 for (i = 0; i < operator_count; ++i) {
960 if (!strcmp(parser_tokval(parser), operators[i].op)) {
961 parser->tok = TOKEN_OPERATOR;
967 static ast_expression* parser_expression_leave(parser_t *parser, bool stopatcomma)
969 ast_expression *expr = NULL;
972 bool gotmemberof = false;
974 /* count the parens because an if starts with one, so the
975 * end of a condition is an unmatched closing paren
979 MEM_VECTOR_INIT(&sy, out);
980 MEM_VECTOR_INIT(&sy, ops);
982 parser->lex->flags.noops = false;
984 parser_reclassify_token(parser);
991 parser->memberof = 0;
993 if (parser->tok == TOKEN_IDENT)
997 parseerror(parser, "expected operator or end of statement");
1002 if (opts_standard == COMPILER_GMQCC)
1004 if (parser->memberof == TYPE_ENTITY) {
1005 /* still get vars first since there could be a fieldpointer */
1006 var = parser_find_var(parser, parser_tokval(parser));
1008 var = parser_find_field(parser, parser_tokval(parser));
1010 else if (parser->memberof == TYPE_VECTOR)
1012 parseerror(parser, "TODO: implement effective vector member access");
1015 else if (parser->memberof) {
1016 parseerror(parser, "namespace for member not found");
1020 var = parser_find_var(parser, parser_tokval(parser));
1022 var = parser_find_var(parser, parser_tokval(parser));
1024 var = parser_find_field(parser, parser_tokval(parser));
1027 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1030 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), var))) {
1031 parseerror(parser, "out of memory");
1034 DEBUGSHUNTDO(printf("push %s\n", parser_tokval(parser)));
1036 else if (parser->tok == TOKEN_FLOATCONST) {
1039 parseerror(parser, "expected operator or end of statement, got constant");
1043 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1046 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
1047 parseerror(parser, "out of memory");
1050 DEBUGSHUNTDO(printf("push %g\n", parser_token(parser)->constval.f));
1052 else if (parser->tok == TOKEN_INTCONST) {
1055 parseerror(parser, "expected operator or end of statement, got constant");
1059 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1062 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
1063 parseerror(parser, "out of memory");
1066 DEBUGSHUNTDO(printf("push %i\n", parser_token(parser)->constval.i));
1068 else if (parser->tok == TOKEN_STRINGCONST) {
1071 parseerror(parser, "expected operator or end of statement, got constant");
1075 val = parser_const_string(parser, parser_tokval(parser));
1078 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
1079 parseerror(parser, "out of memory");
1082 DEBUGSHUNTDO(printf("push string\n"));
1084 else if (parser->tok == TOKEN_VECTORCONST) {
1087 parseerror(parser, "expected operator or end of statement, got constant");
1091 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1094 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
1095 parseerror(parser, "out of memory");
1098 DEBUGSHUNTDO(printf("push '%g %g %g'\n",
1099 parser_token(parser)->constval.v.x,
1100 parser_token(parser)->constval.v.y,
1101 parser_token(parser)->constval.v.z));
1103 else if (parser->tok == '(') {
1105 DEBUGSHUNTDO(printf("push (\n"));
1107 /* we expected an operator, this is the function-call operator */
1108 if (!shunt_ops_add(&sy, syparen(parser_ctx(parser), 'f', sy.out_count-1))) {
1109 parseerror(parser, "out of memory");
1114 if (!shunt_ops_add(&sy, syparen(parser_ctx(parser), 1, 0))) {
1115 parseerror(parser, "out of memory");
1118 DEBUGSHUNTDO(printf("push (\n"));
1122 else if (parser->tok == ')') {
1124 DEBUGSHUNTDO(printf("do[op] )\n"));
1128 /* we do expect an operator next */
1129 /* closing an opening paren */
1130 if (!parser_close_paren(parser, &sy, false))
1133 DEBUGSHUNTDO(printf("do[nop] )\n"));
1137 /* allowed for function calls */
1138 if (!parser_close_paren(parser, &sy, true))
1143 else if (parser->tok != TOKEN_OPERATOR) {
1145 parseerror(parser, "expected operator or end of statement");
1152 /* classify the operator */
1153 /* TODO: suffix operators */
1154 const oper_info *op;
1155 const oper_info *olast = NULL;
1157 for (o = 0; o < operator_count; ++o) {
1158 if ((!(operators[o].flags & OP_PREFIX) == wantop) &&
1159 !(operators[o].flags & OP_SUFFIX) && /* remove this */
1160 !strcmp(parser_tokval(parser), operators[o].op))
1166 if (o == operator_count) {
1167 /* no operator found... must be the end of the statement */
1170 /* found an operator */
1173 /* when declaring variables, a comma starts a new variable */
1174 if (op->id == opid1(',') && !parens && stopatcomma)
1177 if (op->id == opid1('.')) {
1178 /* for gmqcc standard: open up the namespace of the previous type */
1179 ast_expression *prevex = sy.out[sy.out_count-1].out;
1181 parseerror(parser, "unexpected member operator");
1184 if (prevex->expression.vtype == TYPE_ENTITY)
1185 parser->memberof = TYPE_ENTITY;
1186 else if (prevex->expression.vtype == TYPE_VECTOR)
1187 parser->memberof = TYPE_VECTOR;
1189 parseerror(parser, "type error: type has no members");
1195 if (sy.ops_count && !sy.ops[sy.ops_count-1].paren)
1196 olast = &operators[sy.ops[sy.ops_count-1].etype-1];
1199 (op->prec < olast->prec) ||
1200 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1202 if (!parser_sy_pop(parser, &sy))
1204 if (sy.ops_count && !sy.ops[sy.ops_count-1].paren)
1205 olast = &operators[sy.ops[sy.ops_count-1].etype-1];
1210 DEBUGSHUNTDO(printf("push operator %s\n", op->op));
1211 if (!shunt_ops_add(&sy, syop(parser_ctx(parser), op)))
1214 if (!parser_next(parser)) {
1217 if (parser->tok == ';') {
1222 while (sy.ops_count) {
1223 if (!parser_sy_pop(parser, &sy))
1227 parser->lex->flags.noops = true;
1228 if (!sy.out_count) {
1229 parseerror(parser, "empty expression");
1232 expr = sy.out[0].out;
1233 MEM_VECTOR_CLEAR(&sy, out);
1234 MEM_VECTOR_CLEAR(&sy, ops);
1235 DEBUGSHUNTDO(printf("shunt done\n"));
1239 parser->lex->flags.noops = true;
1240 MEM_VECTOR_CLEAR(&sy, out);
1241 MEM_VECTOR_CLEAR(&sy, ops);
1245 static ast_expression* parser_expression(parser_t *parser, bool stopatcomma)
1247 ast_expression *e = parser_expression_leave(parser, stopatcomma);
1250 if (!parser_next(parser)) {
1257 static bool parser_parse_if(parser_t *parser, ast_block *block, ast_expression **out)
1260 ast_expression *cond, *ontrue, *onfalse = NULL;
1262 lex_ctx ctx = parser_ctx(parser);
1264 /* skip the 'if' and check for opening paren */
1265 if (!parser_next(parser) || parser->tok != '(') {
1266 parseerror(parser, "expected 'if' condition in parenthesis");
1269 /* parse into the expression */
1270 if (!parser_next(parser)) {
1271 parseerror(parser, "expected 'if' condition after opening paren");
1274 /* parse the condition */
1275 cond = parser_expression_leave(parser, false);
1279 if (parser->tok != ')') {
1280 parseerror(parser, "expected closing paren after 'if' condition");
1284 /* parse into the 'then' branch */
1285 if (!parser_next(parser)) {
1286 parseerror(parser, "expected statement for on-true branch of 'if'");
1290 ontrue = parser_parse_statement_or_block(parser);
1295 /* check for an else */
1296 if (!strcmp(parser_tokval(parser), "else")) {
1297 /* parse into the 'else' branch */
1298 if (!parser_next(parser)) {
1299 parseerror(parser, "expected on-false branch after 'else'");
1304 onfalse = parser_parse_statement_or_block(parser);
1312 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
1313 *out = (ast_expression*)ifthen;
1317 static bool parser_parse_while(parser_t *parser, ast_block *block, ast_expression **out)
1320 ast_expression *cond, *ontrue;
1322 lex_ctx ctx = parser_ctx(parser);
1324 /* skip the 'while' and check for opening paren */
1325 if (!parser_next(parser) || parser->tok != '(') {
1326 parseerror(parser, "expected 'while' condition in parenthesis");
1329 /* parse into the expression */
1330 if (!parser_next(parser)) {
1331 parseerror(parser, "expected 'while' condition after opening paren");
1334 /* parse the condition */
1335 cond = parser_expression_leave(parser, false);
1339 if (parser->tok != ')') {
1340 parseerror(parser, "expected closing paren after 'while' condition");
1344 /* parse into the 'then' branch */
1345 if (!parser_next(parser)) {
1346 parseerror(parser, "expected while-loop body");
1350 ontrue = parser_parse_statement_or_block(parser);
1356 aloop = ast_loop_new(ctx, NULL, cond, NULL, NULL, ontrue);
1357 *out = (ast_expression*)aloop;
1361 static bool parser_parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
1364 ast_expression *cond, *ontrue;
1366 lex_ctx ctx = parser_ctx(parser);
1368 /* skip the 'do' and get the body */
1369 if (!parser_next(parser)) {
1370 parseerror(parser, "expected loop body");
1373 ontrue = parser_parse_statement_or_block(parser);
1377 /* expect the "while" */
1378 if (parser->tok != TOKEN_KEYWORD ||
1379 strcmp(parser_tokval(parser), "while"))
1381 parseerror(parser, "expected 'while' and condition");
1386 /* skip the 'while' and check for opening paren */
1387 if (!parser_next(parser) || parser->tok != '(') {
1388 parseerror(parser, "expected 'while' condition in parenthesis");
1392 /* parse into the expression */
1393 if (!parser_next(parser)) {
1394 parseerror(parser, "expected 'while' condition after opening paren");
1398 /* parse the condition */
1399 cond = parser_expression_leave(parser, false);
1403 if (parser->tok != ')') {
1404 parseerror(parser, "expected closing paren after 'while' condition");
1410 if (!parser_next(parser) || parser->tok != ';') {
1411 parseerror(parser, "expected semicolon after condition");
1417 if (!parser_next(parser)) {
1418 parseerror(parser, "parse error");
1424 aloop = ast_loop_new(ctx, NULL, NULL, cond, NULL, ontrue);
1425 *out = (ast_expression*)aloop;
1429 static bool parser_parse_for(parser_t *parser, ast_block *block, ast_expression **out)
1432 ast_expression *initexpr, *cond, *increment, *ontrue;
1433 size_t oldblocklocal;
1435 lex_ctx ctx = parser_ctx(parser);
1437 oldblocklocal = parser->blocklocal;
1438 parser->blocklocal = parser->locals_count;
1445 /* skip the 'while' and check for opening paren */
1446 if (!parser_next(parser) || parser->tok != '(') {
1447 parseerror(parser, "expected 'for' expressions in parenthesis");
1450 /* parse into the expression */
1451 if (!parser_next(parser)) {
1452 parseerror(parser, "expected 'for' initializer after opening paren");
1456 if (parser->tok == TOKEN_TYPENAME) {
1457 if (opts_standard != COMPILER_GMQCC) {
1458 if (parsewarning(parser, WARN_EXTENSIONS,
1459 "current standard does not allow variable declarations in for-loop initializers"))
1463 parseerror(parser, "TODO: assignment of new variables to be non-const");
1465 if (!parser_variable(parser, block))
1468 else if (parser->tok != ';')
1470 initexpr = parser_expression_leave(parser, false);
1475 /* move on to condition */
1476 if (parser->tok != ';') {
1477 parseerror(parser, "expected semicolon after for-loop initializer");
1480 if (!parser_next(parser)) {
1481 parseerror(parser, "expected for-loop condition");
1485 /* parse the condition */
1486 if (parser->tok != ';') {
1487 cond = parser_expression_leave(parser, false);
1492 /* move on to incrementor */
1493 if (parser->tok != ';') {
1494 parseerror(parser, "expected semicolon after for-loop initializer");
1497 if (!parser_next(parser)) {
1498 parseerror(parser, "expected for-loop condition");
1502 /* parse the incrementor */
1503 if (parser->tok != ')') {
1504 increment = parser_expression_leave(parser, false);
1510 if (parser->tok != ')') {
1511 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
1514 /* parse into the 'then' branch */
1515 if (!parser_next(parser)) {
1516 parseerror(parser, "expected for-loop body");
1519 ontrue = parser_parse_statement_or_block(parser);
1524 aloop = ast_loop_new(ctx, initexpr, cond, NULL, increment, ontrue);
1525 *out = (ast_expression*)aloop;
1527 while (parser->locals_count > parser->blocklocal)
1528 parser_pop_local(parser);
1529 parser->blocklocal = oldblocklocal;
1532 if (initexpr) ast_delete(initexpr);
1533 if (cond) ast_delete(cond);
1534 if (increment) ast_delete(increment);
1535 while (parser->locals_count > parser->blocklocal)
1536 parser_pop_local(parser);
1537 parser->blocklocal = oldblocklocal;
1541 static bool parser_parse_statement(parser_t *parser, ast_block *block, ast_expression **out)
1543 if (parser->tok == TOKEN_TYPENAME)
1545 /* local variable */
1547 parseerror(parser, "cannot declare a variable from here");
1550 if (opts_standard == COMPILER_QCC) {
1551 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
1554 if (!parser_variable(parser, block))
1559 else if (parser->tok == TOKEN_KEYWORD)
1561 if (!strcmp(parser_tokval(parser), "local"))
1564 parseerror(parser, "cannot declare a local variable here");
1567 if (!parser_next(parser)) {
1568 parseerror(parser, "expected variable declaration");
1571 if (!parser_variable(parser, block))
1576 else if (!strcmp(parser_tokval(parser), "return"))
1578 ast_expression *exp = NULL;
1579 ast_return *ret = NULL;
1580 ast_value *expected = parser->function->vtype;
1582 if (!parser_next(parser)) {
1583 parseerror(parser, "expected return expression");
1587 if (parser->tok != ';') {
1588 exp = parser_expression(parser, false);
1592 if (exp->expression.vtype != expected->expression.next->expression.vtype) {
1593 parseerror(parser, "return with invalid expression");
1596 ret = ast_return_new(exp->expression.node.context, exp);
1602 *out = (ast_expression*)ret;
1603 } else if (!parser_next(parser)) {
1604 parseerror(parser, "expected semicolon");
1605 if (expected->expression.next->expression.vtype != TYPE_VOID) {
1606 parseerror(parser, "return without value");
1611 else if (!strcmp(parser_tokval(parser), "if"))
1613 return parser_parse_if(parser, block, out);
1615 else if (!strcmp(parser_tokval(parser), "while"))
1617 return parser_parse_while(parser, block, out);
1619 else if (!strcmp(parser_tokval(parser), "do"))
1621 return parser_parse_dowhile(parser, block, out);
1623 else if (!strcmp(parser_tokval(parser), "for"))
1625 if (opts_standard == COMPILER_QCC) {
1626 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
1629 return parser_parse_for(parser, block, out);
1631 parseerror(parser, "Unexpected keyword");
1634 else if (parser->tok == '{')
1637 inner = parser_parse_block(parser);
1640 *out = (ast_expression*)inner;
1645 ast_expression *exp = parser_expression(parser, false);
1653 static void parser_pop_local(parser_t *parser)
1655 parser->locals_count--;
1656 mem_d(parser->locals[parser->locals_count].name);
1659 static ast_block* parser_parse_block(parser_t *parser)
1661 size_t oldblocklocal;
1662 ast_block *block = NULL;
1664 oldblocklocal = parser->blocklocal;
1665 parser->blocklocal = parser->locals_count;
1667 if (!parser_next(parser)) { /* skip the '{' */
1668 parseerror(parser, "expected function body");
1672 block = ast_block_new(parser_ctx(parser));
1674 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
1676 ast_expression *expr;
1677 if (parser->tok == '}')
1680 if (!parser_parse_statement(parser, block, &expr)) {
1681 ast_block_delete(block);
1687 if (!ast_block_exprs_add(block, expr)) {
1689 ast_block_delete(block);
1695 if (parser->tok != '}') {
1696 ast_block_delete(block);
1699 (void)parser_next(parser);
1703 while (parser->locals_count > parser->blocklocal)
1704 parser_pop_local(parser);
1705 parser->blocklocal = oldblocklocal;
1706 /* unroll the local vector */
1710 static ast_expression* parser_parse_statement_or_block(parser_t *parser)
1712 ast_expression *expr;
1713 if (parser->tok == '{')
1714 return (ast_expression*)parser_parse_block(parser);
1715 if (!parser_parse_statement(parser, NULL, &expr))
1720 static bool parser_variable(parser_t *parser, ast_block *localblock)
1722 bool isfunc = false;
1723 ast_function *func = NULL;
1727 ast_expression *olddecl;
1729 int basetype = parser_token(parser)->constval.t;
1733 if (!parser_next(parser)) { /* skip basetype or comma */
1734 parseerror(parser, "expected variable declaration");
1741 ctx = parser_ctx(parser);
1742 var = parser_parse_type(parser, basetype, &isfunc);
1747 if (parser->tok != TOKEN_IDENT) {
1748 parseerror(parser, "expected variable name\n");
1753 if (!localblock && (olddecl = parser_find_global(parser, parser_tokval(parser)))) {
1754 ast_value_delete(var);
1755 parseerror(parser, "global %s already declared here: %s:%i\n",
1756 parser_tokval(parser), ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line);
1760 if (localblock && parser_find_local(parser, parser_tokval(parser), parser->blocklocal)) {
1761 ast_value_delete(var);
1762 parseerror(parser, "local %s already declared here: %s:%i\n",
1763 parser_tokval(parser), ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line);
1768 if (!ast_value_set_name(var, parser_tokval(parser))) {
1769 parseerror(parser, "failed to set variable name\n");
1770 ast_value_delete(var);
1775 /* a function was defined */
1777 ast_value *proto = NULL;
1780 olddecl = parser_find_global(parser, parser_tokval(parser));
1782 olddecl = parser_find_local(parser, parser_tokval(parser), parser->blocklocal);
1785 /* we had a prototype */
1786 if (!ast_istype(olddecl, ast_value)) {
1787 /* theoretically not possible you think?
1793 parseerror(parser, "cannot declare a function with the same name as a vector's member: %s",
1794 parser_tokval(parser));
1795 ast_value_delete(var);
1799 proto = (ast_value*)olddecl;
1802 /* turn var into a value of TYPE_FUNCTION, with the old var
1805 fval = ast_value_new(ctx, var->name, TYPE_FUNCTION);
1806 func = ast_function_new(ctx, var->name, fval);
1807 if (!fval || !func) {
1808 ast_value_delete(var);
1809 if (fval) ast_value_delete(fval);
1810 if (func) ast_function_delete(func);
1814 fval->expression.next = (ast_expression*)var;
1815 MEM_VECTOR_MOVE(&var->expression, params, &fval->expression, params);
1817 /* we compare the type late here, but it's easier than
1818 * messing with the parameter-vector etc. earlier
1821 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)fval)) {
1822 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
1824 ast_ctx(proto).file, ast_ctx(proto).line);
1825 ast_function_delete(func);
1826 ast_value_delete(fval);
1829 ast_function_delete(func);
1830 ast_value_delete(fval);
1832 func = var->constval.vfunc;
1836 if (!parser_t_functions_add(parser, func)) {
1837 ast_function_delete(func);
1838 ast_value_delete(fval);
1846 varent.name = util_strdup(var->name);
1847 varent.var = (ast_expression*)var;
1848 if (var->expression.vtype == TYPE_VECTOR)
1850 size_t len = strlen(varent.name);
1851 varentry_t vx, vy, vz;
1852 vx.var = (ast_expression*)ast_member_new(var->expression.node.context, (ast_expression*)var, 0);
1853 vy.var = (ast_expression*)ast_member_new(var->expression.node.context, (ast_expression*)var, 1);
1854 vz.var = (ast_expression*)ast_member_new(var->expression.node.context, (ast_expression*)var, 2);
1855 vx.name = (char*)mem_a(len+3);
1856 vy.name = (char*)mem_a(len+3);
1857 vz.name = (char*)mem_a(len+3);
1858 memcpy(vx.name, varent.name, len);
1859 memcpy(vy.name, varent.name, len);
1860 memcpy(vz.name, varent.name, len);
1861 vx.name[len] = vy.name[len] = vz.name[len] = '_';
1862 vx.name[len+1] = 'x';
1863 vy.name[len+1] = 'y';
1864 vz.name[len+1] = 'z';
1865 vx.name[len+2] = vy.name[len+2] = vz.name[len+2] = 0;
1868 (void)!parser_t_globals_add(parser, varent);
1869 (void)!parser_t_globals_add(parser, vx);
1870 (void)!parser_t_globals_add(parser, vy);
1871 (void)!parser_t_globals_add(parser, vz);
1873 (void)!parser_t_locals_add(parser, varent);
1874 (void)!parser_t_locals_add(parser, vx);
1875 (void)!parser_t_locals_add(parser, vy);
1876 (void)!parser_t_locals_add(parser, vz);
1881 if ( (!localblock && !parser_t_globals_add(parser, varent)) ||
1882 ( localblock && !parser_t_locals_add(parser, varent)) )
1884 ast_value_delete(var);
1888 if (localblock && !ast_block_locals_add(localblock, var))
1890 parser_pop_local(parser);
1891 ast_value_delete(var);
1895 if (!parser_next(parser)) {
1896 ast_value_delete(var);
1900 if (parser->tok == ';') {
1901 if (!parser_next(parser))
1902 return parser->tok == TOKEN_EOF;
1906 if (parser->tok == ',') {
1911 if (parser->tok != '=') {
1912 parseerror(parser, "expected '=' or ';'");
1916 if (!parser_next(parser))
1919 if (parser->tok == '#') {
1921 parseerror(parser, "cannot declare builtins within functions");
1924 if (!isfunc || !func) {
1925 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
1928 if (!parser_next(parser)) {
1929 parseerror(parser, "expected builtin number");
1932 if (parser->tok != TOKEN_INTCONST) {
1933 parseerror(parser, "builtin number must be an integer constant");
1936 if (parser_token(parser)->constval.i <= 0) {
1937 parseerror(parser, "builtin number must be positive integer greater than zero");
1941 func->builtin = -parser_token(parser)->constval.i;
1943 if (!parser_next(parser))
1945 } else if (parser->tok == '{') {
1948 ast_function *old = parser->function;
1951 parseerror(parser, "cannot declare functions within functions");
1955 parser->function = func;
1956 block = parser_parse_block(parser);
1957 parser->function = old;
1962 if (!ast_function_blocks_add(func, block)) {
1963 ast_block_delete(block);
1967 if (parser->tok == ';')
1968 return parser_next(parser) || parser->tok == TOKEN_EOF;
1969 else if (opts_standard == COMPILER_QCC)
1970 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
1973 ast_expression *cexp;
1976 cexp = parser_expression_leave(parser, true);
1977 cval = (ast_value*)cexp;
1978 if (!ast_istype(cval, ast_value) || !cval->isconst)
1979 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
1982 var->isconst = true;
1983 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
1984 memset(&cval->constval, 0, sizeof(cval->constval));
1989 if (parser->tok == ',') {
1994 if (parser->tok != ';') {
1995 parseerror(parser, "missing semicolon");
1999 (void)parser_next(parser);
2005 static bool parser_do(parser_t *parser)
2007 if (parser->tok == TOKEN_TYPENAME)
2009 return parser_variable(parser, NULL);
2011 else if (parser->tok == TOKEN_KEYWORD)
2013 /* handle 'var' and 'const' */
2016 else if (parser->tok == '.')
2020 ast_expression *oldex;
2021 bool isfunc = false;
2023 lex_ctx ctx = parser_ctx(parser);
2026 /* entity-member declaration */
2027 if (!parser_next(parser) || parser->tok != TOKEN_TYPENAME) {
2028 parseerror(parser, "expected member variable definition");
2032 /* remember the base/return type */
2033 basetype = parser_token(parser)->constval.t;
2035 /* parse into the declaration */
2036 if (!parser_next(parser)) {
2037 parseerror(parser, "expected field def");
2041 /* parse the field type fully */
2042 var = parser_parse_type(parser, basetype, &isfunc);
2047 /* now the field name */
2048 if (parser->tok != TOKEN_IDENT) {
2049 parseerror(parser, "expected field name");
2054 /* check for an existing field
2055 * in original qc we also have to check for an existing
2056 * global named like the field
2058 if (opts_standard == COMPILER_QCC) {
2059 if (parser_find_global(parser, parser_tokval(parser))) {
2060 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
2068 fval = ast_value_new(ctx, var->name, TYPE_FUNCTION);
2070 ast_value_delete(var);
2073 fval->expression.next = (ast_expression*)var;
2074 MEM_VECTOR_MOVE(&var->expression, params, &fval->expression, params);
2078 /* turn it into a field */
2079 fld = ast_value_new(ctx, parser_tokval(parser), TYPE_FIELD);
2080 fld->expression.next = (ast_expression*)var;
2082 if ( (oldex = parser_find_field(parser, parser_tokval(parser)))) {
2083 if (ast_istype(oldex, ast_member)) {
2084 parseerror(parser, "cannot declare a field with the same name as a vector component, component %s has been declared here: %s:%i",
2085 parser_tokval(parser), ast_ctx(oldex).file, (int)ast_ctx(oldex).line);
2089 if (!ast_istype(oldex, ast_value)) {
2090 /* not possible / sanity check */
2091 parseerror(parser, "internal error: %s is not an ast_value", parser_tokval(parser));
2096 if (!ast_compare_type(oldex, (ast_expression*)fld)) {
2097 parseerror(parser, "field %s has previously been declared with a different type here: %s:%i",
2098 parser_tokval(parser), ast_ctx(oldex).file, (int)ast_ctx(oldex).line);
2102 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field %s has already been declared here: %s:%i",
2103 parser_tokval(parser), ast_ctx(oldex).file, (int)ast_ctx(oldex).line))
2114 varent.var = (ast_expression*)fld;
2115 varent.name = util_strdup(fld->name);
2116 (void)!parser_t_fields_add(parser, varent);
2118 if (var->expression.vtype == TYPE_VECTOR)
2120 /* create _x, _y and _z fields as well */
2122 varentry_t vx, vy, vz;
2124 len = strlen(varent.name);
2125 vx.var = (ast_expression*)ast_member_new(ast_ctx(fld), (ast_expression*)fld, 0);
2126 vy.var = (ast_expression*)ast_member_new(ast_ctx(fld), (ast_expression*)fld, 1);
2127 vz.var = (ast_expression*)ast_member_new(ast_ctx(fld), (ast_expression*)fld, 2);
2128 vx.name = (char*)mem_a(len+3);
2129 vy.name = (char*)mem_a(len+3);
2130 vz.name = (char*)mem_a(len+3);
2131 memcpy(vx.name, varent.name, len);
2132 memcpy(vy.name, varent.name, len);
2133 memcpy(vz.name, varent.name, len);
2134 vx.name[len] = vy.name[len] = vz.name[len] = '_';
2135 vx.name[len+1] = 'x';
2136 vy.name[len+1] = 'y';
2137 vz.name[len+1] = 'z';
2138 vx.name[len+2] = vy.name[len+2] = vz.name[len+2] = 0;
2139 (void)!parser_t_fields_add(parser, vx);
2140 (void)!parser_t_fields_add(parser, vy);
2141 (void)!parser_t_fields_add(parser, vz);
2145 if (!parser_next(parser)) {
2146 parseerror(parser, "expected semicolon or another field name");
2149 if (parser->tok == ';')
2151 if (parser->tok != ',' || !parser_next(parser)) {
2152 parseerror(parser, "expected semicolon or another field name");
2157 /* skip the semicolon */
2158 if (!parser_next(parser))
2159 return parser->tok == TOKEN_EOF;
2165 parseerror(parser, "unexpected token: %s", parser->lex->tok->value);
2171 static parser_t *parser;
2175 parser = (parser_t*)mem_a(sizeof(parser_t));
2179 memset(parser, 0, sizeof(*parser));
2183 bool parser_compile(const char *filename)
2185 parser->lex = lex_open(filename);
2187 printf("failed to open file \"%s\"\n", filename);
2191 /* initial lexer/parser state */
2192 parser->lex->flags.noops = true;
2194 if (parser_next(parser))
2196 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
2198 if (!parser_do(parser)) {
2199 if (parser->tok == TOKEN_EOF)
2200 parseerror(parser, "unexpected eof");
2201 else if (!parser->errors)
2202 parseerror(parser, "parse error\n");
2203 lex_close(parser->lex);
2210 lex_close(parser->lex);
2212 return !parser->errors;
2215 void parser_cleanup()
2218 for (i = 0; i < parser->functions_count; ++i) {
2219 ast_delete(parser->functions[i]);
2221 for (i = 0; i < parser->imm_vector_count; ++i) {
2222 ast_delete(parser->imm_vector[i]);
2224 for (i = 0; i < parser->imm_string_count; ++i) {
2225 ast_delete(parser->imm_string[i]);
2227 for (i = 0; i < parser->imm_float_count; ++i) {
2228 ast_delete(parser->imm_float[i]);
2230 for (i = 0; i < parser->globals_count; ++i) {
2231 ast_delete(parser->globals[i].var);
2232 mem_d(parser->globals[i].name);
2234 MEM_VECTOR_CLEAR(parser, globals);
2239 bool parser_finish(const char *output)
2244 if (!parser->errors)
2246 ir = ir_builder_new("gmqcc_out");
2248 printf("failed to allocate builder\n");
2252 for (i = 0; i < parser->imm_float_count; ++i) {
2253 if (!ast_global_codegen(parser->imm_float[i], ir)) {
2254 printf("failed to generate global %s\n", parser->imm_float[i]->name);
2255 ir_builder_delete(ir);
2259 for (i = 0; i < parser->imm_string_count; ++i) {
2260 if (!ast_global_codegen(parser->imm_string[i], ir)) {
2261 printf("failed to generate global %s\n", parser->imm_string[i]->name);
2262 ir_builder_delete(ir);
2266 for (i = 0; i < parser->imm_vector_count; ++i) {
2267 if (!ast_global_codegen(parser->imm_vector[i], ir)) {
2268 printf("failed to generate global %s\n", parser->imm_vector[i]->name);
2269 ir_builder_delete(ir);
2273 for (i = 0; i < parser->fields_count; ++i) {
2276 if (!ast_istype(parser->fields[i].var, ast_value))
2278 field = (ast_value*)parser->fields[i].var;
2279 isconst = field->isconst;
2280 field->isconst = false;
2281 if (!ast_global_codegen((ast_value*)field, ir)) {
2282 printf("failed to generate field %s\n", field->name);
2283 ir_builder_delete(ir);
2288 ast_expression *subtype;
2289 field->isconst = true;
2290 subtype = field->expression.next;
2291 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
2292 if (subtype->expression.vtype == TYPE_FIELD)
2293 ifld->fieldtype = subtype->expression.next->expression.vtype;
2294 else if (subtype->expression.vtype == TYPE_FUNCTION)
2295 ifld->outtype = subtype->expression.next->expression.vtype;
2296 (void)!ir_value_set_field(field->ir_v, ifld);
2299 for (i = 0; i < parser->globals_count; ++i) {
2300 if (!ast_istype(parser->globals[i].var, ast_value))
2302 if (!ast_global_codegen((ast_value*)(parser->globals[i].var), ir)) {
2303 printf("failed to generate global %s\n", parser->globals[i].name);
2304 ir_builder_delete(ir);
2308 for (i = 0; i < parser->functions_count; ++i) {
2309 if (!ast_function_codegen(parser->functions[i], ir)) {
2310 printf("failed to generate function %s\n", parser->functions[i]->name);
2311 ir_builder_delete(ir);
2314 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
2315 printf("failed to finalize function %s\n", parser->functions[i]->name);
2316 ir_builder_delete(ir);
2322 ir_builder_dump(ir, printf);
2324 if (!ir_builder_generate(ir, output)) {
2325 printf("*** failed to generate output file\n");
2326 ir_builder_delete(ir);
2330 ir_builder_delete(ir);
2334 printf("*** there were compile errors\n");