11 MEM_VECTOR_MAKE(ast_value*, globals);
12 MEM_VECTOR_MAKE(ast_function*, functions);
14 ast_function *function;
17 MEM_VEC_FUNCTIONS(parser_t, ast_value*, globals)
18 MEM_VEC_FUNCTIONS(parser_t, ast_function*, functions)
20 void parseerror(parser_t *parser, const char *fmt, ...)
25 printf("error %s:%lu: ", parser->lex->tok->ctx.file, (unsigned long)parser->lex->tok->ctx.line);
36 bool parser_next(parser_t *parser)
38 /* lex_do kills the previous token */
39 parser->tok = lex_do(parser->lex);
40 if (parser->tok == TOKEN_EOF || parser->tok >= TOKEN_ERROR)
45 /* lift a token out of the parser so it's not destroyed by parser_next */
46 token *parser_lift(parser_t *parser)
48 token *tok = parser->lex->tok;
49 parser->lex->tok = NULL;
53 #define parser_tokval(p) (p->lex->tok->value)
54 #define parser_token(p) (p->lex->tok)
55 #define parser_ctx(p) (p->lex->tok->ctx)
57 ast_value* parser_find_global(parser_t *parser, const char *name)
60 for (i = 0; i < parser->globals_count; ++i) {
61 if (!strcmp(parser->globals[i]->name, name))
62 return parser->globals[i];
68 MEM_VECTOR_MAKE(ast_value*, p);
70 MEM_VEC_FUNCTIONS(paramlist_t, ast_value*, p)
72 ast_value *parser_parse_type(parser_t *parser, bool *isfunc)
76 lex_ctx ctx = parser_ctx(parser);
77 int vtype = parser_token(parser)->constval.t;
79 MEM_VECTOR_INIT(¶ms, p);
83 if (!parser_next(parser))
86 if (parser->tok == '(') {
92 if (!parser_next(parser)) {
93 MEM_VECTOR_CLEAR(¶ms, p);
97 if (parser->tok == ')')
100 param = parser_parse_type(parser, &dummy);
104 MEM_VECTOR_CLEAR(¶ms, p);
108 if (!paramlist_t_p_add(¶ms, param)) {
109 MEM_VECTOR_CLEAR(¶ms, p);
110 parseerror(parser, "Out of memory while parsing typename");
114 if (parser->tok == ',')
116 if (parser->tok == ')')
118 MEM_VECTOR_CLEAR(¶ms, p);
119 parseerror(parser, "Unexpected token");
122 if (!parser_next(parser)) {
123 MEM_VECTOR_CLEAR(¶ms, p);
128 var = ast_value_new(ctx, "<unnamed>", vtype);
130 MEM_VECTOR_CLEAR(¶ms, p);
133 MEM_VECTOR_MOVE(¶ms, p, var, params);
137 bool parser_do(parser_t *parser)
139 if (parser->tok == TOKEN_TYPENAME)
142 ast_function *func = NULL;
143 lex_ctx ctx = parser_ctx(parser);
144 ast_value *var = parser_parse_type(parser, &isfunc);
148 if (parser->tok != TOKEN_IDENT) {
149 parseerror(parser, "expected variable name\n");
153 if (parser_find_global(parser, parser_tokval(parser))) {
154 ast_value_delete(var);
155 parseerror(parser, "global already exists: %s\n", parser_tokval(parser));
159 if (!ast_value_set_name(var, parser_tokval(parser))) {
160 parseerror(parser, "failed to set variable name\n");
161 ast_value_delete(var);
166 /* a function was defined */
169 /* turn var into a value of TYPE_FUNCTION, with the old var
172 fval = ast_value_new(ctx, var->name, TYPE_FUNCTION);
173 func = ast_function_new(ctx, var->name, fval);
174 if (!fval || !func) {
175 ast_value_delete(var);
176 if (fval) ast_value_delete(fval);
177 if (func) ast_function_delete(func);
181 fval->expression.next = (ast_expression*)var;
182 MEM_VECTOR_MOVE(var, params, fval, params);
184 if (!parser_t_functions_add(parser, func)) {
185 ast_value_delete(var);
186 if (fval) ast_value_delete(fval);
187 if (func) ast_function_delete(func);
194 if (!parser_t_globals_add(parser, var) ||
195 !parser_next(parser))
197 ast_value_delete(var);
201 if (parser->tok == ';') {
202 if (!parser_next(parser))
203 return parser->tok == TOKEN_EOF;
207 if (parser->tok != '=') {
208 parseerror(parser, "expected '=' or ';'");
212 if (!parser_next(parser))
215 if (parser->tok == '#') {
216 if (!isfunc || !func) {
217 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
220 if (!parser_next(parser)) {
221 parseerror(parser, "expected builtin number");
224 if (parser->tok != TOKEN_INTCONST) {
225 parseerror(parser, "builtin number must be an integer constant");
228 if (parser_token(parser)->constval.i <= 0) {
229 parseerror(parser, "builtin number must be positive integer greater than zero");
233 func->builtin = -parser_token(parser)->constval.i;
234 } else if (parser->tok == '{') {
237 parseerror(parser, "TODO, const assignment");
240 if (!parser_next(parser))
243 if (parser->tok != ';') {
244 parseerror(parser, "expected semicolon");
248 (void)parser_next(parser);
252 else if (parser->tok == TOKEN_KEYWORD)
254 /* handle 'var' and 'const' */
257 else if (parser->tok == '.')
259 /* entity-member declaration */
264 parseerror(parser, "unexpected token: %s", parser->lex->tok->value);
270 bool parser_compile(const char *filename)
276 parser = (parser_t*)mem_a(sizeof(parser_t));
280 memset(&parser, 0, sizeof(parser));
282 MEM_VECTOR_INIT(parser, globals);
283 parser->lex = lex_open(filename);
286 printf("failed to open file \"%s\"\n", filename);
290 /* initial lexer/parser state */
291 parser->lex->flags.noops = true;
293 if (parser_next(parser))
295 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
297 if (!parser_do(parser)) {
298 if (parser->tok == TOKEN_EOF)
299 parseerror(parser, "unexpected eof");
301 parseerror(parser, "parse error\n");
302 lex_close(parser->lex);
309 lex_close(parser->lex);
311 ir = ir_builder_new("gmqcc_out");
313 printf("failed to allocate builder\n");
317 for (i = 0; i < parser->globals_count; ++i) {
318 if (!ast_global_codegen(parser->globals[i], ir)) {
319 printf("failed to generate global %s\n", parser->globals[i]->name);
322 for (i = 0; i < parser->functions_count; ++i) {
323 if (!ast_function_codegen(parser->functions[i], ir)) {
324 printf("failed to generate function %s\n", parser->functions[i]->name);
326 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
327 printf("failed to finalize function %s\n", parser->functions[i]->name);
331 ir_builder_dump(ir, printf);
334 for (i = 0; i < parser->globals_count; ++i) {
335 ast_value_delete(parser->globals[i]);
337 MEM_VECTOR_CLEAR(parser, globals);