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)
93 for (i = parser->locals_count; i > upto;) {
95 if (!strcmp(parser->locals[i]->name, name))
96 return parser->locals[i];
101 ast_value* parser_find_var(parser_t *parser, const char *name)
104 v = parser_find_local(parser, name, 0);
105 if (!v) v = parser_find_global(parser, name);
110 MEM_VECTOR_MAKE(ast_value*, p);
112 MEM_VEC_FUNCTIONS(paramlist_t, ast_value*, p)
114 static ast_value *parser_parse_type(parser_t *parser, int basetype, bool *isfunc)
118 lex_ctx ctx = parser_ctx(parser);
119 int vtype = basetype;
122 MEM_VECTOR_INIT(¶ms, p);
126 if (parser->tok == '(') {
132 if (!parser_next(parser)) {
133 MEM_VECTOR_CLEAR(¶ms, p);
137 if (parser->tok == ')')
140 temptype = parser_token(parser)->constval.t;
141 if (!parser_next(parser)) {
142 MEM_VECTOR_CLEAR(¶ms, p);
145 param = parser_parse_type(parser, temptype, &dummy);
149 MEM_VECTOR_CLEAR(¶ms, p);
153 if (!paramlist_t_p_add(¶ms, param)) {
154 MEM_VECTOR_CLEAR(¶ms, p);
155 parseerror(parser, "Out of memory while parsing typename");
159 if (parser->tok == ',')
161 if (parser->tok == ')')
163 MEM_VECTOR_CLEAR(¶ms, p);
164 parseerror(parser, "Unexpected token");
167 if (!parser_next(parser)) {
168 MEM_VECTOR_CLEAR(¶ms, p);
173 var = ast_value_new(ctx, "<unnamed>", vtype);
175 MEM_VECTOR_CLEAR(¶ms, p);
178 MEM_VECTOR_MOVE(¶ms, p, var, params);
184 size_t etype; /* 0 = expression, others are operators */
186 ast_value *value; /* need to know if we can assign */
191 MEM_VECTOR_MAKE(sy_elem, out);
192 MEM_VECTOR_MAKE(sy_elem, ops);
194 MEM_VEC_FUNCTIONS(shunt, sy_elem, out)
195 MEM_VEC_FUNCTIONS(shunt, sy_elem, ops)
197 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
205 static sy_elem syval(lex_ctx ctx, ast_value *v) {
208 e.out = (ast_expression*)v;
214 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
216 e.etype = 1 + (op - operators);
223 static bool parser_sy_pop(parser_t *parser, shunt *sy)
227 ast_expression *out = NULL;
228 ast_expression *exprs[3];
232 if (!sy->ops_count) {
233 parseerror(parser, "internal error: missing operator");
237 op = &operators[sy->ops[sy->ops_count-1].etype - 1];
238 ctx = sy->ops[sy->ops_count-1].ctx;
240 if (sy->out_count < op->operands) {
241 parseerror(parser, "internal error: not enough operands: %i", sy->out_count);
247 sy->out_count -= op->operands;
248 for (i = 0; i < op->operands; ++i) {
249 exprs[i] = sy->out[sy->out_count+i].out;
250 vars[i] = sy->out[sy->out_count+i].value;
253 printf("Applying operator %s\n", op->op);
257 parseerror(parser, "internal error: unhandled operand");
261 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
262 parseerror(parser, "Cannot add type %s and %s",
263 type_name[exprs[0]->expression.vtype],
264 type_name[exprs[1]->expression.vtype]);
267 switch (exprs[0]->expression.vtype) {
269 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
272 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
275 parseerror(parser, "Cannot add type %s and %s",
276 type_name[exprs[0]->expression.vtype],
277 type_name[exprs[1]->expression.vtype]);
282 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
283 parseerror(parser, "Cannot subtract type %s from %s",
284 type_name[exprs[1]->expression.vtype],
285 type_name[exprs[0]->expression.vtype]);
288 switch (exprs[0]->expression.vtype) {
290 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
293 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
296 parseerror(parser, "Cannot add type %s from %s",
297 type_name[exprs[1]->expression.vtype],
298 type_name[exprs[0]->expression.vtype]);
303 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
304 exprs[0]->expression.vtype != TYPE_VECTOR &&
305 exprs[0]->expression.vtype != TYPE_FLOAT &&
306 exprs[1]->expression.vtype != TYPE_VECTOR &&
307 exprs[1]->expression.vtype != TYPE_FLOAT)
309 parseerror(parser, "Cannot multiply type %s from %s",
310 type_name[exprs[1]->expression.vtype],
311 type_name[exprs[0]->expression.vtype]);
314 switch (exprs[0]->expression.vtype) {
316 if (exprs[1]->expression.vtype == TYPE_VECTOR)
317 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
319 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
322 if (exprs[1]->expression.vtype == TYPE_FLOAT)
323 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
325 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
328 parseerror(parser, "Cannot add type %s from %s",
329 type_name[exprs[1]->expression.vtype],
330 type_name[exprs[0]->expression.vtype]);
335 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
336 exprs[0]->expression.vtype != TYPE_FLOAT)
338 parseerror(parser, "Cannot divide types %s and %s",
339 type_name[exprs[0]->expression.vtype],
340 type_name[exprs[1]->expression.vtype]);
343 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
349 parseerror(parser, "Cannot assign to non-variable");
352 out = (ast_expression*)ast_store_new(ctx,
353 type_store_instr[vars[0]->expression.vtype],
359 parseerror(parser, "failed to apply operand %s", op->op);
363 sy->out[sy->out_count++] = syexp(ctx, out);
367 static ast_expression* parser_expression(parser_t *parser)
369 ast_expression *expr = NULL;
373 MEM_VECTOR_INIT(&sy, out);
374 MEM_VECTOR_INIT(&sy, ops);
380 if (parser->tok == TOKEN_IDENT)
383 ast_value *var = parser_find_var(parser, parser_tokval(parser));
385 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
388 if (!shunt_out_add(&sy, syval(parser_ctx(parser), var))) {
389 parseerror(parser, "out of memory");
392 printf("Added: %s\n", var->name);
393 } else if (parser->tok == TOKEN_FLOATCONST) {
394 ast_value *val = parser_const_float(parser, (parser_token(parser)->constval.f));
397 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
398 parseerror(parser, "out of memory");
401 } else if (parser->tok == TOKEN_INTCONST) {
402 ast_value *val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
405 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
406 parseerror(parser, "out of memory");
409 printf("Added: %i\n", parser_token(parser)->constval.i);
411 /* TODO: prefix operators */
412 parseerror(parser, "expected statement");
416 parser->lex->flags.noops = false;
418 if (parser->tok != TOKEN_OPERATOR) {
419 parseerror(parser, "expected operator or end of statement");
422 /* classify the operator */
423 /* TODO: suffix operators */
425 const oper_info *olast = NULL;
427 for (o = 0; o < operator_count; ++o) {
428 if (!(operators[o].flags & OP_PREFIX) &&
429 !(operators[o].flags & OP_SUFFIX) && /* remove this */
430 !strcmp(parser_tokval(parser), operators[o].op))
435 if (o == operator_count) {
436 /* no operator found... must be the end of the statement */
439 /* found an operator */
443 olast = &operators[sy.ops[sy.ops_count-1].etype-1];
446 (op->prec < olast->prec) ||
447 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
449 if (!parser_sy_pop(parser, &sy))
451 olast = sy.ops_count ? (&operators[sy.ops[sy.ops_count-1].etype-1]) : NULL;
454 if (!shunt_ops_add(&sy, syop(parser_ctx(parser), op)))
456 printf("Added op %s\n", op->op);
459 parser->lex->flags.noops = true;
461 if (!parser_next(parser)) {
464 if (parser->tok == ';') {
465 printf("End of statement\n");
469 if (!parser_next(parser)) {
470 parseerror(parser, "Unexpected end of file");
474 while (sy.ops_count) {
475 if (!parser_sy_pop(parser, &sy))
479 parser->lex->flags.noops = true;
481 parseerror(parser, "empty expression");
484 expr = sy.out[0].out;
485 MEM_VECTOR_CLEAR(&sy, out);
486 MEM_VECTOR_CLEAR(&sy, ops);
490 parser->lex->flags.noops = true;
491 MEM_VECTOR_CLEAR(&sy, out);
492 MEM_VECTOR_CLEAR(&sy, ops);
496 static bool parser_variable(parser_t *parser, ast_block *localblock);
497 static bool parser_body_do(parser_t *parser, ast_block *block)
499 if (parser->tok == TOKEN_TYPENAME)
502 if (!parser_variable(parser, block))
506 else if (parser->tok == '{')
509 parseerror(parser, "TODO: inner blocks");
514 ast_expression *exp = parser_expression(parser);
517 if (!ast_block_exprs_add(block, exp))
523 static ast_block* parser_parse_block(parser_t *parser)
525 size_t oldblocklocal;
526 ast_block *block = NULL;
528 oldblocklocal = parser->blocklocal;
529 parser->blocklocal = parser->locals_count;
531 if (!parser_next(parser)) { /* skip the '{' */
532 parseerror(parser, "expected function body");
536 block = ast_block_new(parser_ctx(parser));
538 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
540 if (parser->tok == '}')
543 if (!parser_body_do(parser, block)) {
544 ast_block_delete(block);
550 if (parser->tok != '}') {
551 ast_block_delete(block);
554 (void)parser_next(parser);
558 parser->blocklocal = oldblocklocal;
562 static bool parser_variable(parser_t *parser, ast_block *localblock)
565 ast_function *func = NULL;
569 int basetype = parser_token(parser)->constval.t;
573 if (!parser_next(parser)) { /* skip basetype or comma */
574 parseerror(parser, "expected variable declaration");
580 ctx = parser_ctx(parser);
581 var = parser_parse_type(parser, basetype, &isfunc);
586 if (parser->tok != TOKEN_IDENT) {
587 parseerror(parser, "expected variable name\n");
591 if (!localblock && parser_find_global(parser, parser_tokval(parser))) {
592 ast_value_delete(var);
593 parseerror(parser, "global already exists: %s\n", parser_tokval(parser));
597 if (localblock && parser_find_local(parser, parser_tokval(parser), parser->blocklocal)) {
598 ast_value_delete(var);
599 parseerror(parser, "local variable already exists: %s\n", parser_tokval(parser));
603 if (!ast_value_set_name(var, parser_tokval(parser))) {
604 parseerror(parser, "failed to set variable name\n");
605 ast_value_delete(var);
610 /* a function was defined */
613 /* turn var into a value of TYPE_FUNCTION, with the old var
616 fval = ast_value_new(ctx, var->name, TYPE_FUNCTION);
617 func = ast_function_new(ctx, var->name, fval);
618 if (!fval || !func) {
619 ast_value_delete(var);
620 if (fval) ast_value_delete(fval);
621 if (func) ast_function_delete(func);
625 fval->expression.next = (ast_expression*)var;
626 MEM_VECTOR_MOVE(var, params, fval, params);
628 if (!parser_t_functions_add(parser, func)) {
629 ast_value_delete(var);
630 if (fval) ast_value_delete(fval);
631 if (func) ast_function_delete(func);
638 if ( (!localblock && !parser_t_globals_add(parser, var)) ||
639 ( localblock && !parser_t_locals_add(parser, var)) )
641 ast_value_delete(var);
644 if (localblock && !ast_block_locals_add(localblock, var))
646 parser->locals_count--;
647 ast_value_delete(var);
651 if (!parser_next(parser)) {
652 ast_value_delete(var);
656 if (parser->tok == ';') {
657 if (!parser_next(parser))
658 return parser->tok == TOKEN_EOF;
662 if (parser->tok == ',') {
667 if (parser->tok != '=') {
668 parseerror(parser, "expected '=' or ';'");
672 if (!parser_next(parser))
675 if (parser->tok == '#') {
677 parseerror(parser, "cannot declare builtins within functions");
680 if (!isfunc || !func) {
681 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
684 if (!parser_next(parser)) {
685 parseerror(parser, "expected builtin number");
688 if (parser->tok != TOKEN_INTCONST) {
689 parseerror(parser, "builtin number must be an integer constant");
692 if (parser_token(parser)->constval.i <= 0) {
693 parseerror(parser, "builtin number must be positive integer greater than zero");
697 func->builtin = -parser_token(parser)->constval.i;
698 } else if (parser->tok == '{') {
701 ast_function *old = parser->function;
704 parseerror(parser, "cannot declare functions within functions");
708 parser->function = func;
709 block = parser_parse_block(parser);
710 parser->function = old;
715 if (!ast_function_blocks_add(func, block)) {
716 ast_block_delete(block);
721 parseerror(parser, "TODO, const assignment");
724 if (!parser_next(parser))
727 if (parser->tok == ',') {
732 if (parser->tok != ';') {
733 parseerror(parser, "expected semicolon");
737 (void)parser_next(parser);
743 static bool parser_do(parser_t *parser)
745 if (parser->tok == TOKEN_TYPENAME)
747 return parser_variable(parser, NULL);
749 else if (parser->tok == TOKEN_KEYWORD)
751 /* handle 'var' and 'const' */
754 else if (parser->tok == '.')
756 /* entity-member declaration */
761 parseerror(parser, "unexpected token: %s", parser->lex->tok->value);
767 bool parser_compile(const char *filename)
773 parser = (parser_t*)mem_a(sizeof(parser_t));
777 memset(parser, 0, sizeof(parser));
779 MEM_VECTOR_INIT(parser, globals);
780 MEM_VECTOR_INIT(parser, locals);
781 parser->lex = lex_open(filename);
784 printf("failed to open file \"%s\"\n", filename);
788 /* initial lexer/parser state */
789 parser->lex->flags.noops = true;
791 if (parser_next(parser))
793 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
795 if (!parser_do(parser)) {
796 if (parser->tok == TOKEN_EOF)
797 parseerror(parser, "unexpected eof");
799 parseerror(parser, "parse error\n");
800 lex_close(parser->lex);
807 lex_close(parser->lex);
809 ir = ir_builder_new("gmqcc_out");
811 printf("failed to allocate builder\n");
815 for (i = 0; i < parser->imm_float_count; ++i) {
816 if (!ast_global_codegen(parser->imm_float[i], ir)) {
817 printf("failed to generate global %s\n", parser->imm_float[i]->name);
820 for (i = 0; i < parser->globals_count; ++i) {
821 if (!ast_global_codegen(parser->globals[i], ir)) {
822 printf("failed to generate global %s\n", parser->globals[i]->name);
825 for (i = 0; i < parser->functions_count; ++i) {
826 if (!ast_function_codegen(parser->functions[i], ir)) {
827 printf("failed to generate function %s\n", parser->functions[i]->name);
829 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
830 printf("failed to finalize function %s\n", parser->functions[i]->name);
834 ir_builder_dump(ir, printf);
837 for (i = 0; i < parser->globals_count; ++i) {
838 ast_value_delete(parser->globals[i]);
840 MEM_VECTOR_CLEAR(parser, globals);