11 MEM_VECTOR_MAKE(ast_value*, globals);
12 MEM_VECTOR_MAKE(ast_function*, functions);
13 MEM_VECTOR_MAKE(ast_value*, imm_float);
15 ast_function *function;
16 MEM_VECTOR_MAKE(ast_value*, locals);
20 MEM_VEC_FUNCTIONS(parser_t, ast_value*, globals)
21 MEM_VEC_FUNCTIONS(parser_t, ast_value*, imm_float)
22 MEM_VEC_FUNCTIONS(parser_t, ast_value*, locals)
23 MEM_VEC_FUNCTIONS(parser_t, ast_function*, functions)
25 void parseerror(parser_t *parser, const char *fmt, ...)
30 printf("error %s:%lu: ", parser->lex->tok->ctx.file, (unsigned long)parser->lex->tok->ctx.line);
41 bool parser_next(parser_t *parser)
43 /* lex_do kills the previous token */
44 parser->tok = lex_do(parser->lex);
45 if (parser->tok == TOKEN_EOF || parser->tok >= TOKEN_ERROR)
50 /* lift a token out of the parser so it's not destroyed by parser_next */
51 token *parser_lift(parser_t *parser)
53 token *tok = parser->lex->tok;
54 parser->lex->tok = NULL;
58 #define parser_tokval(p) (p->lex->tok->value)
59 #define parser_token(p) (p->lex->tok)
60 #define parser_ctx(p) (p->lex->tok->ctx)
62 ast_value* parser_const_float(parser_t *parser, double d)
66 for (i = 0; i < parser->imm_float_count; ++i) {
67 if (parser->imm_float[i]->constval.vfloat == d)
68 return parser->imm_float[i];
70 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_FLOAT);
72 out->constval.vfloat = d;
73 if (!parser_t_imm_float_add(parser, out)) {
74 ast_value_delete(out);
80 ast_value* parser_find_global(parser_t *parser, const char *name)
83 for (i = 0; i < parser->globals_count; ++i) {
84 if (!strcmp(parser->globals[i]->name, name))
85 return parser->globals[i];
90 ast_value* parser_find_local(parser_t *parser, const char *name, size_t upto)
94 for (i = parser->locals_count; i > upto;) {
96 if (!strcmp(parser->locals[i]->name, name))
97 return parser->locals[i];
99 fun = parser->function->vtype;
100 for (i = 0; i < fun->expression.params_count; ++i) {
101 if (!strcmp(fun->expression.params[i]->name, name))
102 return fun->expression.params[i];
107 ast_value* parser_find_var(parser_t *parser, const char *name)
110 v = parser_find_local(parser, name, 0);
111 if (!v) v = parser_find_global(parser, name);
116 MEM_VECTOR_MAKE(ast_value*, p);
118 MEM_VEC_FUNCTIONS(paramlist_t, ast_value*, p)
120 static ast_value *parser_parse_type(parser_t *parser, int basetype, bool *isfunc)
124 lex_ctx ctx = parser_ctx(parser);
125 int vtype = basetype;
129 MEM_VECTOR_INIT(¶ms, p);
133 if (parser->tok == '(') {
139 if (!parser_next(parser))
142 if (parser->tok == ')')
145 temptype = parser_token(parser)->constval.t;
146 if (!parser_next(parser))
149 param = parser_parse_type(parser, temptype, &dummy);
155 if (parser->tok == TOKEN_IDENT) {
156 /* named parameter */
157 if (!ast_value_set_name(param, parser_tokval(parser)))
159 if (!parser_next(parser))
163 if (!paramlist_t_p_add(¶ms, param)) {
164 parseerror(parser, "Out of memory while parsing typename");
168 if (parser->tok == ',')
170 if (parser->tok == ')')
172 parseerror(parser, "Unexpected token");
175 if (!parser_next(parser))
179 var = ast_value_new(ctx, "<unnamed>", vtype);
182 MEM_VECTOR_MOVE(¶ms, p, &var->expression, params);
185 for (i = 0; i < params.p_count; ++i)
186 ast_value_delete(params.p[i]);
187 MEM_VECTOR_CLEAR(¶ms, p);
193 size_t etype; /* 0 = expression, others are operators */
197 ast_value *value; /* need to know if we can assign */
198 ast_block *block; /* for commas and function calls */
203 MEM_VECTOR_MAKE(sy_elem, out);
204 MEM_VECTOR_MAKE(sy_elem, ops);
206 MEM_VEC_FUNCTIONS(shunt, sy_elem, out)
207 MEM_VEC_FUNCTIONS(shunt, sy_elem, ops)
209 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
219 static sy_elem syval(lex_ctx ctx, ast_value *v) {
222 e.out = (ast_expression*)v;
230 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
233 e.out = (ast_expression*)v;
241 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
243 e.etype = 1 + (op - operators);
252 static sy_elem syparen(lex_ctx ctx, int p, size_t off) {
264 static bool parser_sy_pop(parser_t *parser, shunt *sy)
268 ast_expression *out = NULL;
269 ast_expression *exprs[3];
271 ast_block *blocks[3];
274 if (!sy->ops_count) {
275 parseerror(parser, "internal error: missing operator");
279 if (sy->ops[sy->ops_count-1].paren) {
280 parseerror(parser, "unmatched parenthesis");
284 op = &operators[sy->ops[sy->ops_count-1].etype - 1];
285 ctx = sy->ops[sy->ops_count-1].ctx;
287 if (sy->out_count < op->operands) {
288 parseerror(parser, "internal error: not enough operands: %i", sy->out_count);
294 sy->out_count -= op->operands;
295 for (i = 0; i < op->operands; ++i) {
296 exprs[i] = sy->out[sy->out_count+i].out;
297 vars[i] = sy->out[sy->out_count+i].value;
298 blocks[i] = sy->out[sy->out_count+i].block;
301 if (blocks[0] && !blocks[0]->exprs_count && op->id != opid1(',')) {
302 parseerror(parser, "internal error: operator cannot be applied on empty blocks");
309 parseerror(parser, "internal error: unhandled operand");
314 if (!ast_block_exprs_add(blocks[0], exprs[1]))
317 blocks[0] = ast_block_new(ctx);
318 if (!ast_block_exprs_add(blocks[0], exprs[0]) ||
319 !ast_block_exprs_add(blocks[0], exprs[1]))
324 if (!ast_block_set_type(blocks[0], exprs[1]))
327 sy->out[sy->out_count++] = syblock(ctx, blocks[0]);
331 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
332 parseerror(parser, "Cannot add type %s and %s",
333 type_name[exprs[0]->expression.vtype],
334 type_name[exprs[1]->expression.vtype]);
337 switch (exprs[0]->expression.vtype) {
339 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
342 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
345 parseerror(parser, "Cannot add type %s and %s",
346 type_name[exprs[0]->expression.vtype],
347 type_name[exprs[1]->expression.vtype]);
352 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
353 parseerror(parser, "Cannot subtract type %s from %s",
354 type_name[exprs[1]->expression.vtype],
355 type_name[exprs[0]->expression.vtype]);
358 switch (exprs[0]->expression.vtype) {
360 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
363 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
366 parseerror(parser, "Cannot add type %s from %s",
367 type_name[exprs[1]->expression.vtype],
368 type_name[exprs[0]->expression.vtype]);
373 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
374 exprs[0]->expression.vtype != TYPE_VECTOR &&
375 exprs[0]->expression.vtype != TYPE_FLOAT &&
376 exprs[1]->expression.vtype != TYPE_VECTOR &&
377 exprs[1]->expression.vtype != TYPE_FLOAT)
379 parseerror(parser, "Cannot multiply type %s from %s",
380 type_name[exprs[1]->expression.vtype],
381 type_name[exprs[0]->expression.vtype]);
384 switch (exprs[0]->expression.vtype) {
386 if (exprs[1]->expression.vtype == TYPE_VECTOR)
387 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
389 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
392 if (exprs[1]->expression.vtype == TYPE_FLOAT)
393 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
395 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
398 parseerror(parser, "Cannot add type %s from %s",
399 type_name[exprs[1]->expression.vtype],
400 type_name[exprs[0]->expression.vtype]);
405 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
406 exprs[0]->expression.vtype != TYPE_FLOAT)
408 parseerror(parser, "Cannot divide types %s and %s",
409 type_name[exprs[0]->expression.vtype],
410 type_name[exprs[1]->expression.vtype]);
413 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
419 parseerror(parser, "Cannot assign to non-variable");
422 out = (ast_expression*)ast_store_new(ctx,
423 type_store_instr[vars[0]->expression.vtype],
429 parseerror(parser, "failed to apply operand %s", op->op);
433 sy->out[sy->out_count++] = syexp(ctx, out);
437 static bool parser_close_call(parser_t *parser, shunt *sy)
439 /* was a function call */
447 fid = sy->ops[sy->ops_count].off;
449 /* out[fid] is the function
450 * everything above is parameters...
452 * 1 params = ast_expression
456 if (sy->out_count < 1 || sy->out_count <= fid) {
457 parseerror(parser, "internal error: function call needs function and parameter list...");
461 fun = sy->out[fid].out;
463 call = ast_call_new(sy->ops[sy->ops_count].ctx, fun);
465 parseerror(parser, "out of memory");
469 printf("fid = %i, out_count = %i\n", (int)fid, (int)sy->out_count);
471 if (fid+1 == sy->out_count) {
474 } else if (fid+2 == sy->out_count) {
477 params = sy->out[sy->out_count].block;
481 if (!ast_call_params_add(call, sy->out[sy->out_count].out)) {
482 ast_delete(sy->out[sy->out_count].out);
483 parseerror(parser, "out of memory");
487 paramcount = params->exprs_count;
488 MEM_VECTOR_MOVE(params, exprs, call, params);
492 parseerror(parser, "invalid function call");
496 /* overwrite fid, the function, with a call */
497 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
499 if (fun->expression.vtype != TYPE_FUNCTION) {
500 parseerror(parser, "not a function");
504 if (!fun->expression.next) {
505 parseerror(parser, "could not determine function return type");
508 if (fun->expression.params_count != paramcount) {
509 parseerror(parser, "expected %i parameters, got %i", (int)fun->expression.params_count, paramcount);
517 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
519 if (!sy->ops_count) {
520 parseerror(parser, "unmatched closing paren");
523 if (sy->ops[sy->ops_count-1].paren == 1) {
524 parseerror(parser, "empty parenthesis expression");
527 while (sy->ops_count) {
528 if (sy->ops[sy->ops_count-1].paren == 'f') {
529 if (!parser_close_call(parser, sy))
533 if (sy->ops[sy->ops_count-1].paren == 1) {
535 return !functions_only;
537 if (!parser_sy_pop(parser, sy))
543 static ast_expression* parser_expression(parser_t *parser)
545 ast_expression *expr = NULL;
549 MEM_VECTOR_INIT(&sy, out);
550 MEM_VECTOR_INIT(&sy, ops);
556 bool nextwant = true;
557 if (parser->tok == TOKEN_IDENT)
560 ast_value *var = parser_find_var(parser, parser_tokval(parser));
562 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
565 if (!shunt_out_add(&sy, syval(parser_ctx(parser), var))) {
566 parseerror(parser, "out of memory");
570 else if (parser->tok == TOKEN_FLOATCONST) {
571 ast_value *val = parser_const_float(parser, (parser_token(parser)->constval.f));
574 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
575 parseerror(parser, "out of memory");
579 else if (parser->tok == TOKEN_INTCONST) {
580 ast_value *val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
583 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
584 parseerror(parser, "out of memory");
588 else if (parser->tok == '(') {
589 nextwant = false; /* not expecting an operator next */
590 if (!shunt_ops_add(&sy, syparen(parser_ctx(parser), 1, 0))) {
591 parseerror(parser, "out of memory");
595 else if (parser->tok == ')') {
596 /* allowed for function calls */
597 if (!parser_close_paren(parser, &sy, true))
601 /* TODO: prefix operators */
602 parseerror(parser, "expected statement");
606 parser->lex->flags.noops = !wantop;
608 if (parser->tok == '(') {
609 /* we expected an operator, this is the function-call operator */
610 if (!shunt_ops_add(&sy, syparen(parser_ctx(parser), 'f', sy.out_count-1))) {
611 parseerror(parser, "out of memory");
615 else if (parser->tok == ')') {
616 /* we do expect an operator next */
617 /* closing an opening paren */
618 if (!parser_close_paren(parser, &sy, false))
621 else if (parser->tok != TOKEN_OPERATOR) {
622 parseerror(parser, "expected operator or end of statement");
626 /* classify the operator */
627 /* TODO: suffix operators */
629 const oper_info *olast = NULL;
631 for (o = 0; o < operator_count; ++o) {
632 if (!(operators[o].flags & OP_PREFIX) &&
633 !(operators[o].flags & OP_SUFFIX) && /* remove this */
634 !strcmp(parser_tokval(parser), operators[o].op))
639 if (o == operator_count) {
640 /* no operator found... must be the end of the statement */
643 /* found an operator */
646 if (sy.ops_count && !sy.ops[sy.ops_count-1].paren)
647 olast = &operators[sy.ops[sy.ops_count-1].etype-1];
650 (op->prec < olast->prec) ||
651 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
653 if (!parser_sy_pop(parser, &sy))
655 if (sy.ops_count && !sy.ops[sy.ops_count-1].paren)
656 olast = &operators[sy.ops[sy.ops_count-1].etype-1];
659 if (!shunt_ops_add(&sy, syop(parser_ctx(parser), op)))
663 parser->lex->flags.noops = true;
665 if (!parser_next(parser)) {
668 if (parser->tok == ';') {
672 if (!parser_next(parser)) {
673 parseerror(parser, "Unexpected end of file");
677 while (sy.ops_count) {
678 if (!parser_sy_pop(parser, &sy))
682 parser->lex->flags.noops = true;
684 parseerror(parser, "empty expression");
687 expr = sy.out[0].out;
688 MEM_VECTOR_CLEAR(&sy, out);
689 MEM_VECTOR_CLEAR(&sy, ops);
693 parser->lex->flags.noops = true;
694 MEM_VECTOR_CLEAR(&sy, out);
695 MEM_VECTOR_CLEAR(&sy, ops);
699 static bool parser_variable(parser_t *parser, ast_block *localblock);
700 static bool parser_body_do(parser_t *parser, ast_block *block)
702 if (parser->tok == TOKEN_TYPENAME)
705 if (!parser_variable(parser, block))
709 else if (parser->tok == TOKEN_KEYWORD)
711 if (!strcmp(parser_tokval(parser), "return"))
716 if (!parser_next(parser)) {
717 parseerror(parser, "expected return expression");
721 exp = parser_expression(parser);
724 ret = ast_return_new(exp->expression.node.context, exp);
729 if (!ast_block_exprs_add(block, (ast_expression*)ret)) {
735 parseerror(parser, "Unexpected keyword");
738 else if (parser->tok == '{')
741 parseerror(parser, "TODO: inner blocks: %s", parser_tokval(parser));
746 ast_expression *exp = parser_expression(parser);
749 if (!ast_block_exprs_add(block, exp)) {
757 static ast_block* parser_parse_block(parser_t *parser)
759 size_t oldblocklocal;
760 ast_block *block = NULL;
762 oldblocklocal = parser->blocklocal;
763 parser->blocklocal = parser->locals_count;
765 if (!parser_next(parser)) { /* skip the '{' */
766 parseerror(parser, "expected function body");
770 block = ast_block_new(parser_ctx(parser));
772 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
774 if (parser->tok == '}')
777 if (!parser_body_do(parser, block)) {
778 ast_block_delete(block);
784 if (parser->tok != '}') {
785 ast_block_delete(block);
788 (void)parser_next(parser);
792 parser->blocklocal = oldblocklocal;
796 static bool parser_variable(parser_t *parser, ast_block *localblock)
799 ast_function *func = NULL;
803 int basetype = parser_token(parser)->constval.t;
807 if (!parser_next(parser)) { /* skip basetype or comma */
808 parseerror(parser, "expected variable declaration");
814 ctx = parser_ctx(parser);
815 var = parser_parse_type(parser, basetype, &isfunc);
820 if (parser->tok != TOKEN_IDENT) {
821 parseerror(parser, "expected variable name\n");
825 if (!localblock && parser_find_global(parser, parser_tokval(parser))) {
826 ast_value_delete(var);
827 parseerror(parser, "global already exists: %s\n", parser_tokval(parser));
831 if (localblock && parser_find_local(parser, parser_tokval(parser), parser->blocklocal)) {
832 ast_value_delete(var);
833 parseerror(parser, "local variable already exists: %s\n", parser_tokval(parser));
837 if (!ast_value_set_name(var, parser_tokval(parser))) {
838 parseerror(parser, "failed to set variable name\n");
839 ast_value_delete(var);
844 /* a function was defined */
847 /* turn var into a value of TYPE_FUNCTION, with the old var
850 fval = ast_value_new(ctx, var->name, TYPE_FUNCTION);
851 func = ast_function_new(ctx, var->name, fval);
852 if (!fval || !func) {
853 ast_value_delete(var);
854 if (fval) ast_value_delete(fval);
855 if (func) ast_function_delete(func);
859 fval->expression.next = (ast_expression*)var;
860 MEM_VECTOR_MOVE(&var->expression, params, &fval->expression, params);
862 if (!parser_t_functions_add(parser, func)) {
863 ast_value_delete(var);
864 if (fval) ast_value_delete(fval);
865 if (func) ast_function_delete(func);
872 if ( (!localblock && !parser_t_globals_add(parser, var)) ||
873 ( localblock && !parser_t_locals_add(parser, var)) )
875 ast_value_delete(var);
878 if (localblock && !ast_block_locals_add(localblock, var))
880 parser->locals_count--;
881 ast_value_delete(var);
885 if (!parser_next(parser)) {
886 ast_value_delete(var);
890 if (parser->tok == ';') {
891 if (!parser_next(parser))
892 return parser->tok == TOKEN_EOF;
896 if (parser->tok == ',') {
901 if (parser->tok != '=') {
902 parseerror(parser, "expected '=' or ';'");
906 if (!parser_next(parser))
909 if (parser->tok == '#') {
911 parseerror(parser, "cannot declare builtins within functions");
914 if (!isfunc || !func) {
915 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
918 if (!parser_next(parser)) {
919 parseerror(parser, "expected builtin number");
922 if (parser->tok != TOKEN_INTCONST) {
923 parseerror(parser, "builtin number must be an integer constant");
926 if (parser_token(parser)->constval.i <= 0) {
927 parseerror(parser, "builtin number must be positive integer greater than zero");
931 func->builtin = -parser_token(parser)->constval.i;
932 } else if (parser->tok == '{') {
935 ast_function *old = parser->function;
938 parseerror(parser, "cannot declare functions within functions");
942 parser->function = func;
943 block = parser_parse_block(parser);
944 parser->function = old;
949 if (!ast_function_blocks_add(func, block)) {
950 ast_block_delete(block);
955 parseerror(parser, "TODO, const assignment");
958 if (!parser_next(parser))
961 if (parser->tok == ',') {
966 if (parser->tok != ';') {
967 parseerror(parser, "expected semicolon");
971 (void)parser_next(parser);
977 static bool parser_do(parser_t *parser)
979 if (parser->tok == TOKEN_TYPENAME)
981 return parser_variable(parser, NULL);
983 else if (parser->tok == TOKEN_KEYWORD)
985 /* handle 'var' and 'const' */
988 else if (parser->tok == '.')
990 /* entity-member declaration */
995 parseerror(parser, "unexpected token: %s", parser->lex->tok->value);
1001 bool parser_compile(const char *filename)
1007 parser = (parser_t*)mem_a(sizeof(parser_t));
1011 memset(parser, 0, sizeof(parser));
1013 MEM_VECTOR_INIT(parser, globals);
1014 MEM_VECTOR_INIT(parser, locals);
1015 parser->lex = lex_open(filename);
1018 printf("failed to open file \"%s\"\n", filename);
1022 /* initial lexer/parser state */
1023 parser->lex->flags.noops = true;
1025 if (parser_next(parser))
1027 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
1029 if (!parser_do(parser)) {
1030 if (parser->tok == TOKEN_EOF)
1031 parseerror(parser, "unexpected eof");
1033 parseerror(parser, "parse error\n");
1034 lex_close(parser->lex);
1041 lex_close(parser->lex);
1043 ir = ir_builder_new("gmqcc_out");
1045 printf("failed to allocate builder\n");
1049 for (i = 0; i < parser->imm_float_count; ++i) {
1050 if (!ast_global_codegen(parser->imm_float[i], ir)) {
1051 printf("failed to generate global %s\n", parser->imm_float[i]->name);
1054 for (i = 0; i < parser->globals_count; ++i) {
1055 if (!ast_global_codegen(parser->globals[i], ir)) {
1056 printf("failed to generate global %s\n", parser->globals[i]->name);
1059 for (i = 0; i < parser->functions_count; ++i) {
1060 if (!ast_function_codegen(parser->functions[i], ir)) {
1061 printf("failed to generate function %s\n", parser->functions[i]->name);
1063 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
1064 printf("failed to finalize function %s\n", parser->functions[i]->name);
1068 ir_builder_dump(ir, printf);
1071 for (i = 0; i < parser->globals_count; ++i) {
1072 ast_value_delete(parser->globals[i]);
1074 MEM_VECTOR_CLEAR(parser, globals);