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->params_count; ++i) {
101 if (!strcmp(fun->params[i]->name, name))
102 return fun->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, 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 */
196 ast_value *value; /* need to know if we can assign */
197 ast_block *block; /* for commas and function calls */
202 MEM_VECTOR_MAKE(sy_elem, out);
203 MEM_VECTOR_MAKE(sy_elem, ops);
205 MEM_VEC_FUNCTIONS(shunt, sy_elem, out)
206 MEM_VEC_FUNCTIONS(shunt, sy_elem, ops)
208 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
218 static sy_elem syval(lex_ctx ctx, ast_value *v) {
221 e.out = (ast_expression*)v;
229 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
232 e.out = (ast_expression*)v;
240 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
242 e.etype = 1 + (op - operators);
251 static sy_elem syparen(lex_ctx ctx, int p) {
262 static bool parser_sy_pop(parser_t *parser, shunt *sy)
266 ast_expression *out = NULL;
267 ast_expression *exprs[3];
269 ast_block *blocks[3];
272 if (!sy->ops_count) {
273 parseerror(parser, "internal error: missing operator");
277 if (sy->ops[sy->ops_count-1].paren) {
278 parseerror(parser, "unmatched parenthesis");
282 op = &operators[sy->ops[sy->ops_count-1].etype - 1];
283 ctx = sy->ops[sy->ops_count-1].ctx;
285 if (sy->out_count < op->operands) {
286 parseerror(parser, "internal error: not enough operands: %i", sy->out_count);
292 sy->out_count -= op->operands;
293 for (i = 0; i < op->operands; ++i) {
294 exprs[i] = sy->out[sy->out_count+i].out;
295 vars[i] = sy->out[sy->out_count+i].value;
296 blocks[i] = sy->out[sy->out_count+i].block;
302 parseerror(parser, "internal error: unhandled operand");
307 if (!ast_block_exprs_add(blocks[0], exprs[1]))
310 blocks[0] = ast_block_new(ctx);
311 if (!ast_block_exprs_add(blocks[0], exprs[0]) ||
312 !ast_block_exprs_add(blocks[0], exprs[1]))
317 if (!ast_block_set_type(blocks[0], exprs[1]))
320 sy->out[sy->out_count++] = syblock(ctx, blocks[0]);
324 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
325 parseerror(parser, "Cannot add type %s and %s",
326 type_name[exprs[0]->expression.vtype],
327 type_name[exprs[1]->expression.vtype]);
330 switch (exprs[0]->expression.vtype) {
332 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
335 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
338 parseerror(parser, "Cannot add type %s and %s",
339 type_name[exprs[0]->expression.vtype],
340 type_name[exprs[1]->expression.vtype]);
345 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
346 parseerror(parser, "Cannot subtract type %s from %s",
347 type_name[exprs[1]->expression.vtype],
348 type_name[exprs[0]->expression.vtype]);
351 switch (exprs[0]->expression.vtype) {
353 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
356 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
359 parseerror(parser, "Cannot add type %s from %s",
360 type_name[exprs[1]->expression.vtype],
361 type_name[exprs[0]->expression.vtype]);
366 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
367 exprs[0]->expression.vtype != TYPE_VECTOR &&
368 exprs[0]->expression.vtype != TYPE_FLOAT &&
369 exprs[1]->expression.vtype != TYPE_VECTOR &&
370 exprs[1]->expression.vtype != TYPE_FLOAT)
372 parseerror(parser, "Cannot multiply type %s from %s",
373 type_name[exprs[1]->expression.vtype],
374 type_name[exprs[0]->expression.vtype]);
377 switch (exprs[0]->expression.vtype) {
379 if (exprs[1]->expression.vtype == TYPE_VECTOR)
380 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
382 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
385 if (exprs[1]->expression.vtype == TYPE_FLOAT)
386 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
388 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
391 parseerror(parser, "Cannot add type %s from %s",
392 type_name[exprs[1]->expression.vtype],
393 type_name[exprs[0]->expression.vtype]);
398 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
399 exprs[0]->expression.vtype != TYPE_FLOAT)
401 parseerror(parser, "Cannot divide types %s and %s",
402 type_name[exprs[0]->expression.vtype],
403 type_name[exprs[1]->expression.vtype]);
406 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
412 parseerror(parser, "Cannot assign to non-variable");
415 out = (ast_expression*)ast_store_new(ctx,
416 type_store_instr[vars[0]->expression.vtype],
422 parseerror(parser, "failed to apply operand %s", op->op);
426 sy->out[sy->out_count++] = syexp(ctx, out);
430 static bool parser_close_paren(parser_t *parser, shunt *sy)
432 if (!sy->ops_count) {
433 parseerror(parser, "unmatched closing paren");
436 if (sy->ops[sy->ops_count-1].paren == 1) {
437 parseerror(parser, "empty parenthesis expression");
440 while (sy->ops_count) {
441 if (sy->ops[sy->ops_count-1].paren == 1) {
445 if (!parser_sy_pop(parser, sy))
451 static ast_expression* parser_expression(parser_t *parser)
453 ast_expression *expr = NULL;
457 MEM_VECTOR_INIT(&sy, out);
458 MEM_VECTOR_INIT(&sy, ops);
464 bool nextwant = true;
465 if (parser->tok == TOKEN_IDENT)
468 ast_value *var = parser_find_var(parser, parser_tokval(parser));
470 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
473 if (!shunt_out_add(&sy, syval(parser_ctx(parser), var))) {
474 parseerror(parser, "out of memory");
478 else if (parser->tok == TOKEN_FLOATCONST) {
479 ast_value *val = parser_const_float(parser, (parser_token(parser)->constval.f));
482 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
483 parseerror(parser, "out of memory");
487 else if (parser->tok == TOKEN_INTCONST) {
488 ast_value *val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
491 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
492 parseerror(parser, "out of memory");
496 else if (parser->tok == '(') {
497 nextwant = false; /* not expecting an operator next */
498 if (!shunt_ops_add(&sy, syparen(parser_ctx(parser), 1))) {
499 parseerror(parser, "out of memory");
504 /* TODO: prefix operators */
505 parseerror(parser, "expected statement");
509 parser->lex->flags.noops = !wantop;
511 if (parser->tok == '(') {
512 /* we expected an operator, this is the function-call operator */
513 if (!shunt_ops_add(&sy, syparen(parser_ctx(parser), 'f'))) {
514 parseerror(parser, "out of memory");
518 else if (parser->tok == ')') {
519 /* we do expect an operator next */
520 /* closing an opening paren */
521 if (!parser_close_paren(parser, &sy))
524 else if (parser->tok != TOKEN_OPERATOR) {
525 parseerror(parser, "expected operator or end of statement");
529 /* classify the operator */
530 /* TODO: suffix operators */
532 const oper_info *olast = NULL;
534 for (o = 0; o < operator_count; ++o) {
535 if (!(operators[o].flags & OP_PREFIX) &&
536 !(operators[o].flags & OP_SUFFIX) && /* remove this */
537 !strcmp(parser_tokval(parser), operators[o].op))
542 if (o == operator_count) {
543 /* no operator found... must be the end of the statement */
546 /* found an operator */
549 if (sy.ops_count && !sy.ops[sy.ops_count-1].paren)
550 olast = &operators[sy.ops[sy.ops_count-1].etype-1];
553 (op->prec < olast->prec) ||
554 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
556 if (!parser_sy_pop(parser, &sy))
558 if (sy.ops_count && !sy.ops[sy.ops_count-1].paren)
559 olast = &operators[sy.ops[sy.ops_count-1].etype-1];
562 if (!shunt_ops_add(&sy, syop(parser_ctx(parser), op)))
566 parser->lex->flags.noops = true;
568 if (!parser_next(parser)) {
571 if (parser->tok == ';') {
575 if (!parser_next(parser)) {
576 parseerror(parser, "Unexpected end of file");
580 while (sy.ops_count) {
581 if (!parser_sy_pop(parser, &sy))
585 parser->lex->flags.noops = true;
587 parseerror(parser, "empty expression");
590 expr = sy.out[0].out;
591 MEM_VECTOR_CLEAR(&sy, out);
592 MEM_VECTOR_CLEAR(&sy, ops);
596 parser->lex->flags.noops = true;
597 MEM_VECTOR_CLEAR(&sy, out);
598 MEM_VECTOR_CLEAR(&sy, ops);
602 static bool parser_variable(parser_t *parser, ast_block *localblock);
603 static bool parser_body_do(parser_t *parser, ast_block *block)
605 if (parser->tok == TOKEN_TYPENAME)
608 if (!parser_variable(parser, block))
612 else if (parser->tok == TOKEN_KEYWORD)
614 if (!strcmp(parser_tokval(parser), "return"))
619 if (!parser_next(parser)) {
620 parseerror(parser, "expected return expression");
624 exp = parser_expression(parser);
627 ret = ast_return_new(exp->expression.node.context, exp);
632 if (!ast_block_exprs_add(block, (ast_expression*)ret)) {
638 parseerror(parser, "Unexpected keyword");
641 else if (parser->tok == '{')
644 parseerror(parser, "TODO: inner blocks: %s", parser_tokval(parser));
649 ast_expression *exp = parser_expression(parser);
652 if (!ast_block_exprs_add(block, exp)) {
660 static ast_block* parser_parse_block(parser_t *parser)
662 size_t oldblocklocal;
663 ast_block *block = NULL;
665 oldblocklocal = parser->blocklocal;
666 parser->blocklocal = parser->locals_count;
668 if (!parser_next(parser)) { /* skip the '{' */
669 parseerror(parser, "expected function body");
673 block = ast_block_new(parser_ctx(parser));
675 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
677 if (parser->tok == '}')
680 if (!parser_body_do(parser, block)) {
681 ast_block_delete(block);
687 if (parser->tok != '}') {
688 ast_block_delete(block);
691 (void)parser_next(parser);
695 parser->blocklocal = oldblocklocal;
699 static bool parser_variable(parser_t *parser, ast_block *localblock)
702 ast_function *func = NULL;
706 int basetype = parser_token(parser)->constval.t;
710 if (!parser_next(parser)) { /* skip basetype or comma */
711 parseerror(parser, "expected variable declaration");
717 ctx = parser_ctx(parser);
718 var = parser_parse_type(parser, basetype, &isfunc);
723 if (parser->tok != TOKEN_IDENT) {
724 parseerror(parser, "expected variable name\n");
728 if (!localblock && parser_find_global(parser, parser_tokval(parser))) {
729 ast_value_delete(var);
730 parseerror(parser, "global already exists: %s\n", parser_tokval(parser));
734 if (localblock && parser_find_local(parser, parser_tokval(parser), parser->blocklocal)) {
735 ast_value_delete(var);
736 parseerror(parser, "local variable already exists: %s\n", parser_tokval(parser));
740 if (!ast_value_set_name(var, parser_tokval(parser))) {
741 parseerror(parser, "failed to set variable name\n");
742 ast_value_delete(var);
747 /* a function was defined */
750 /* turn var into a value of TYPE_FUNCTION, with the old var
753 fval = ast_value_new(ctx, var->name, TYPE_FUNCTION);
754 func = ast_function_new(ctx, var->name, fval);
755 if (!fval || !func) {
756 ast_value_delete(var);
757 if (fval) ast_value_delete(fval);
758 if (func) ast_function_delete(func);
762 fval->expression.next = (ast_expression*)var;
763 MEM_VECTOR_MOVE(var, params, fval, params);
765 if (!parser_t_functions_add(parser, func)) {
766 ast_value_delete(var);
767 if (fval) ast_value_delete(fval);
768 if (func) ast_function_delete(func);
775 if ( (!localblock && !parser_t_globals_add(parser, var)) ||
776 ( localblock && !parser_t_locals_add(parser, var)) )
778 ast_value_delete(var);
781 if (localblock && !ast_block_locals_add(localblock, var))
783 parser->locals_count--;
784 ast_value_delete(var);
788 if (!parser_next(parser)) {
789 ast_value_delete(var);
793 if (parser->tok == ';') {
794 if (!parser_next(parser))
795 return parser->tok == TOKEN_EOF;
799 if (parser->tok == ',') {
804 if (parser->tok != '=') {
805 parseerror(parser, "expected '=' or ';'");
809 if (!parser_next(parser))
812 if (parser->tok == '#') {
814 parseerror(parser, "cannot declare builtins within functions");
817 if (!isfunc || !func) {
818 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
821 if (!parser_next(parser)) {
822 parseerror(parser, "expected builtin number");
825 if (parser->tok != TOKEN_INTCONST) {
826 parseerror(parser, "builtin number must be an integer constant");
829 if (parser_token(parser)->constval.i <= 0) {
830 parseerror(parser, "builtin number must be positive integer greater than zero");
834 func->builtin = -parser_token(parser)->constval.i;
835 } else if (parser->tok == '{') {
838 ast_function *old = parser->function;
841 parseerror(parser, "cannot declare functions within functions");
845 parser->function = func;
846 block = parser_parse_block(parser);
847 parser->function = old;
852 if (!ast_function_blocks_add(func, block)) {
853 ast_block_delete(block);
858 parseerror(parser, "TODO, const assignment");
861 if (!parser_next(parser))
864 if (parser->tok == ',') {
869 if (parser->tok != ';') {
870 parseerror(parser, "expected semicolon");
874 (void)parser_next(parser);
880 static bool parser_do(parser_t *parser)
882 if (parser->tok == TOKEN_TYPENAME)
884 return parser_variable(parser, NULL);
886 else if (parser->tok == TOKEN_KEYWORD)
888 /* handle 'var' and 'const' */
891 else if (parser->tok == '.')
893 /* entity-member declaration */
898 parseerror(parser, "unexpected token: %s", parser->lex->tok->value);
904 bool parser_compile(const char *filename)
910 parser = (parser_t*)mem_a(sizeof(parser_t));
914 memset(parser, 0, sizeof(parser));
916 MEM_VECTOR_INIT(parser, globals);
917 MEM_VECTOR_INIT(parser, locals);
918 parser->lex = lex_open(filename);
921 printf("failed to open file \"%s\"\n", filename);
925 /* initial lexer/parser state */
926 parser->lex->flags.noops = true;
928 if (parser_next(parser))
930 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
932 if (!parser_do(parser)) {
933 if (parser->tok == TOKEN_EOF)
934 parseerror(parser, "unexpected eof");
936 parseerror(parser, "parse error\n");
937 lex_close(parser->lex);
944 lex_close(parser->lex);
946 ir = ir_builder_new("gmqcc_out");
948 printf("failed to allocate builder\n");
952 for (i = 0; i < parser->imm_float_count; ++i) {
953 if (!ast_global_codegen(parser->imm_float[i], ir)) {
954 printf("failed to generate global %s\n", parser->imm_float[i]->name);
957 for (i = 0; i < parser->globals_count; ++i) {
958 if (!ast_global_codegen(parser->globals[i], ir)) {
959 printf("failed to generate global %s\n", parser->globals[i]->name);
962 for (i = 0; i < parser->functions_count; ++i) {
963 if (!ast_function_codegen(parser->functions[i], ir)) {
964 printf("failed to generate function %s\n", parser->functions[i]->name);
966 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
967 printf("failed to finalize function %s\n", parser->functions[i]->name);
971 ir_builder_dump(ir, printf);
974 for (i = 0; i < parser->globals_count; ++i) {
975 ast_value_delete(parser->globals[i]);
977 MEM_VECTOR_CLEAR(parser, globals);