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 */
189 MEM_VECTOR_MAKE(sy_elem, out);
190 MEM_VECTOR_MAKE(sy_elem, ops);
192 MEM_VEC_FUNCTIONS(shynt, sy_elem, out)
193 MEM_VEC_FUNCTIONS(shynt, sy_elem, ops)
195 static sy_elem syexp(ast_expression *v) {
201 static sy_elem syval(ast_value *v) { return syexp((ast_expression*)v); }
203 static sy_elem syop(const oper_info *op) {
205 e.etype = 1 + (op - operators);
210 static bool parser_sy_pop(parser_t *parser, shynt *sy)
212 if (!sy->ops_count) {
213 parseerror(parser, "internal error: missing operator");
219 static ast_expression* parser_expression(parser_t *parser)
221 ast_expression *expr = NULL;
225 MEM_VECTOR_INIT(&sy, out);
226 MEM_VECTOR_INIT(&sy, ops);
232 if (parser->tok == TOKEN_IDENT)
235 ast_value *var = parser_find_var(parser, parser_tokval(parser));
237 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
240 if (!shynt_out_add(&sy, syval(var))) {
241 parseerror(parser, "out of memory");
244 } else if (parser->tok == TOKEN_FLOATCONST) {
245 ast_value *val = parser_const_float(parser, (parser_token(parser)->constval.f));
248 if (!shynt_out_add(&sy, syval(val))) {
249 parseerror(parser, "out of memory");
252 } else if (parser->tok == TOKEN_INTCONST) {
253 ast_value *val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
256 if (!shynt_out_add(&sy, syval(val))) {
257 parseerror(parser, "out of memory");
261 /* TODO: prefix operators */
262 parseerror(parser, "expected statement");
266 parser->lex->flags.noops = false;
267 if (!parser_next(parser)) {
271 if (parser->tok != TOKEN_OPERATOR) {
272 parseerror(parser, "expected operator or end of statement");
275 /* classify the operator */
276 /* TODO: suffix operators */
278 const oper_info *olast = NULL;
280 for (o = 0; o < operator_count; ++o) {
281 if (!(operators[o].flags & OP_PREFIX) &&
282 !(operators[o].flags & OP_SUFFIX) && /* remove this */
283 !strcmp(parser_tokval(parser), operators[o].op))
288 if (o == operator_count) {
289 /* no operator found... must be the end of the statement */
292 /* found an operator */
296 olast = &operators[sy.ops[sy.ops_count-1].etype-1];
299 (op->prec < olast->prec) ||
300 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
302 if (!parser_sy_pop(parser, &sy))
304 olast = sy.ops_count ? (&operators[sy.ops[sy.ops_count-1].etype-1]) : NULL;
307 if (!shynt_ops_add(&sy, syop(op)))
311 parser->lex->flags.noops = true;
312 if (!parser_next(parser)) {
318 while (sy.ops_count) {
319 if (!parser_sy_pop(parser, &sy))
323 parser->lex->flags.noops = true;
325 parseerror(parser, "empty expression");
328 expr = sy.out[0].out;
329 MEM_VECTOR_CLEAR(&sy, out);
330 MEM_VECTOR_CLEAR(&sy, ops);
334 parser->lex->flags.noops = true;
335 MEM_VECTOR_CLEAR(&sy, out);
336 MEM_VECTOR_CLEAR(&sy, ops);
340 static bool parser_variable(parser_t *parser, bool global);
341 static bool parser_body_do(parser_t *parser, ast_block *block)
343 if (parser->tok == TOKEN_TYPENAME)
346 if (!parser_variable(parser, false))
350 else if (parser->tok == '{')
353 parseerror(parser, "TODO: inner blocks");
358 ast_expression *exp = parser_expression(parser);
361 if (!ast_block_exprs_add(block, exp))
367 static ast_block* parser_parse_block(parser_t *parser)
369 size_t oldblocklocal;
370 ast_block *block = NULL;
372 oldblocklocal = parser->blocklocal;
373 parser->blocklocal = parser->locals_count;
375 if (!parser_next(parser)) { /* skip the '{' */
376 parseerror(parser, "expected function body");
380 block = ast_block_new(parser_ctx(parser));
382 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
384 if (parser->tok == '}')
387 if (!parser_body_do(parser, block)) {
388 ast_block_delete(block);
394 if (parser->tok != '}') {
395 ast_block_delete(block);
398 (void)parser_next(parser);
402 parser->blocklocal = oldblocklocal;
406 static bool parser_variable(parser_t *parser, bool global)
409 ast_function *func = NULL;
413 int basetype = parser_token(parser)->constval.t;
417 if (!parser_next(parser)) { /* skip basetype or comma */
418 parseerror(parser, "expected variable declaration");
424 ctx = parser_ctx(parser);
425 var = parser_parse_type(parser, basetype, &isfunc);
430 if (parser->tok != TOKEN_IDENT) {
431 parseerror(parser, "expected variable name\n");
435 if (global && parser_find_global(parser, parser_tokval(parser))) {
436 ast_value_delete(var);
437 parseerror(parser, "global already exists: %s\n", parser_tokval(parser));
441 if (!global && parser_find_local(parser, parser_tokval(parser), parser->blocklocal)) {
442 ast_value_delete(var);
443 parseerror(parser, "local variable already exists: %s\n", parser_tokval(parser));
447 if (!ast_value_set_name(var, parser_tokval(parser))) {
448 parseerror(parser, "failed to set variable name\n");
449 ast_value_delete(var);
454 /* a function was defined */
457 /* turn var into a value of TYPE_FUNCTION, with the old var
460 fval = ast_value_new(ctx, var->name, TYPE_FUNCTION);
461 func = ast_function_new(ctx, var->name, fval);
462 if (!fval || !func) {
463 ast_value_delete(var);
464 if (fval) ast_value_delete(fval);
465 if (func) ast_function_delete(func);
469 fval->expression.next = (ast_expression*)var;
470 MEM_VECTOR_MOVE(var, params, fval, params);
472 if (!parser_t_functions_add(parser, func)) {
473 ast_value_delete(var);
474 if (fval) ast_value_delete(fval);
475 if (func) ast_function_delete(func);
482 if ( ( global && !parser_t_globals_add(parser, var)) ||
483 (!global && !parser_t_locals_add(parser, var)) )
485 ast_value_delete(var);
489 if (!parser_next(parser)) {
490 ast_value_delete(var);
494 if (parser->tok == ';') {
495 if (!parser_next(parser))
496 return parser->tok == TOKEN_EOF;
500 if (parser->tok == ',') {
505 if (parser->tok != '=') {
506 parseerror(parser, "expected '=' or ';'");
510 if (!parser_next(parser))
513 if (parser->tok == '#') {
515 parseerror(parser, "cannot declare builtins within functions");
518 if (!isfunc || !func) {
519 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
522 if (!parser_next(parser)) {
523 parseerror(parser, "expected builtin number");
526 if (parser->tok != TOKEN_INTCONST) {
527 parseerror(parser, "builtin number must be an integer constant");
530 if (parser_token(parser)->constval.i <= 0) {
531 parseerror(parser, "builtin number must be positive integer greater than zero");
535 func->builtin = -parser_token(parser)->constval.i;
536 } else if (parser->tok == '{') {
539 ast_function *old = parser->function;
542 parseerror(parser, "cannot declare functions within functions");
546 parser->function = func;
547 block = parser_parse_block(parser);
548 parser->function = old;
553 if (!ast_function_blocks_add(func, block)) {
554 ast_block_delete(block);
559 parseerror(parser, "TODO, const assignment");
562 if (!parser_next(parser))
565 if (parser->tok == ',') {
570 if (parser->tok != ';') {
571 parseerror(parser, "expected semicolon");
575 (void)parser_next(parser);
581 static bool parser_do(parser_t *parser)
583 if (parser->tok == TOKEN_TYPENAME)
585 return parser_variable(parser, true);
587 else if (parser->tok == TOKEN_KEYWORD)
589 /* handle 'var' and 'const' */
592 else if (parser->tok == '.')
594 /* entity-member declaration */
599 parseerror(parser, "unexpected token: %s", parser->lex->tok->value);
605 bool parser_compile(const char *filename)
611 parser = (parser_t*)mem_a(sizeof(parser_t));
615 memset(parser, 0, sizeof(parser));
617 MEM_VECTOR_INIT(parser, globals);
618 MEM_VECTOR_INIT(parser, locals);
619 parser->lex = lex_open(filename);
622 printf("failed to open file \"%s\"\n", filename);
626 /* initial lexer/parser state */
627 parser->lex->flags.noops = true;
629 if (parser_next(parser))
631 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
633 if (!parser_do(parser)) {
634 if (parser->tok == TOKEN_EOF)
635 parseerror(parser, "unexpected eof");
637 parseerror(parser, "parse error\n");
638 lex_close(parser->lex);
645 lex_close(parser->lex);
647 ir = ir_builder_new("gmqcc_out");
649 printf("failed to allocate builder\n");
653 for (i = 0; i < parser->imm_float_count; ++i) {
654 if (!ast_global_codegen(parser->imm_float[i], ir)) {
655 printf("failed to generate global %s\n", parser->imm_float[i]->name);
658 for (i = 0; i < parser->globals_count; ++i) {
659 if (!ast_global_codegen(parser->globals[i], ir)) {
660 printf("failed to generate global %s\n", parser->globals[i]->name);
663 for (i = 0; i < parser->functions_count; ++i) {
664 if (!ast_function_codegen(parser->functions[i], ir)) {
665 printf("failed to generate function %s\n", parser->functions[i]->name);
667 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
668 printf("failed to finalize function %s\n", parser->functions[i]->name);
672 ir_builder_dump(ir, printf);
675 for (i = 0; i < parser->globals_count; ++i) {
676 ast_value_delete(parser->globals[i]);
678 MEM_VECTOR_CLEAR(parser, globals);