11 MEM_VECTOR_MAKE(ast_value*, globals);
12 MEM_VECTOR_MAKE(ast_function*, functions);
15 MEM_VEC_FUNCTIONS(parser_t, ast_value*, globals)
16 MEM_VEC_FUNCTIONS(parser_t, ast_function*, functions)
18 void parseerror(parser_t *parser, const char *fmt, ...)
23 printf("error %s:%lu: ", parser->lex->tok->ctx.file, (unsigned long)parser->lex->tok->ctx.line);
34 bool parser_next(parser_t *parser)
36 /* lex_do kills the previous token */
37 parser->tok = lex_do(parser->lex);
38 if (parser->tok == TOKEN_EOF || parser->tok >= TOKEN_ERROR)
43 /* lift a token out of the parser so it's not destroyed by parser_next */
44 token *parser_lift(parser_t *parser)
46 token *tok = parser->lex->tok;
47 parser->lex->tok = NULL;
51 #define parser_tokval(p) (p->lex->tok->value)
52 #define parser_token(p) (p->lex->tok)
53 #define parser_ctx(p) (p->lex->tok->ctx)
55 ast_value* parser_find_global(parser_t *parser, const char *name)
58 for (i = 0; i < parser->globals_count; ++i) {
59 if (!strcmp(parser->globals[i]->name, name))
60 return parser->globals[i];
66 MEM_VECTOR_MAKE(ast_value*, p);
68 MEM_VEC_FUNCTIONS(paramlist_t, ast_value*, p)
70 ast_value *parser_parse_type(parser_t *parser, bool *isfunc)
74 lex_ctx ctx = parser_ctx(parser);
75 int vtype = parser_token(parser)->constval.t;
77 MEM_VECTOR_INIT(¶ms, p);
81 if (!parser_next(parser))
84 if (parser->tok == '(') {
90 if (!parser_next(parser)) {
91 MEM_VECTOR_CLEAR(¶ms, p);
95 if (parser->tok == ')')
98 param = parser_parse_type(parser, &dummy);
102 MEM_VECTOR_CLEAR(¶ms, p);
106 if (!paramlist_t_p_add(¶ms, param)) {
107 MEM_VECTOR_CLEAR(¶ms, p);
108 parseerror(parser, "Out of memory while parsing typename");
112 if (parser->tok == ',')
114 if (parser->tok == ')')
116 MEM_VECTOR_CLEAR(¶ms, p);
117 parseerror(parser, "Unexpected token");
120 if (!parser_next(parser)) {
121 MEM_VECTOR_CLEAR(¶ms, p);
126 var = ast_value_new(ctx, "<unnamed>", vtype);
128 MEM_VECTOR_CLEAR(¶ms, p);
131 MEM_VECTOR_MOVE(¶ms, p, var, params);
135 bool parser_do(parser_t *parser)
137 if (parser->tok == TOKEN_TYPENAME)
140 ast_function *func = NULL;
141 lex_ctx ctx = parser_ctx(parser);
142 ast_value *var = parser_parse_type(parser, &isfunc);
146 if (parser->tok != TOKEN_IDENT) {
147 parseerror(parser, "expected variable name\n");
151 if (parser_find_global(parser, parser_tokval(parser))) {
152 ast_value_delete(var);
153 parseerror(parser, "global already exists: %s\n", parser_tokval(parser));
157 if (!ast_value_set_name(var, parser_tokval(parser))) {
158 parseerror(parser, "failed to set variable name\n");
159 ast_value_delete(var);
164 /* a function was defined */
167 /* turn var into a value of TYPE_FUNCTION, with the old var
170 fval = ast_value_new(ctx, var->name, TYPE_FUNCTION);
171 func = ast_function_new(ctx, var->name, fval);
172 if (!fval || !func) {
173 ast_value_delete(var);
174 if (fval) ast_value_delete(fval);
175 if (func) ast_function_delete(func);
179 fval->expression.next = (ast_expression*)var;
180 MEM_VECTOR_MOVE(var, params, fval, params);
182 if (!parser_t_functions_add(parser, func)) {
183 ast_value_delete(var);
184 if (fval) ast_value_delete(fval);
185 if (func) ast_function_delete(func);
192 if (!parser_t_globals_add(parser, var) ||
193 !parser_next(parser))
195 ast_value_delete(var);
199 if (parser->tok == ';') {
200 if (!parser_next(parser))
201 return parser->tok == TOKEN_EOF;
205 if (parser->tok != '=') {
206 parseerror(parser, "expected '=' or ';'");
210 if (!parser_next(parser))
213 if (parser->tok == '#') {
214 if (!isfunc || !func) {
215 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
218 if (!parser_next(parser)) {
219 parseerror(parser, "expected builtin number");
222 if (parser->tok != TOKEN_INTCONST) {
223 parseerror(parser, "builtin number must be an integer constant");
226 if (parser_token(parser)->constval.i <= 0) {
227 parseerror(parser, "builtin number must be positive integer greater than zero");
231 func->builtin = -parser_token(parser)->constval.i;
232 } else if (parser->tok == '{') {
235 parseerror(parser, "TODO, const assignment");
238 if (!parser_next(parser))
241 if (parser->tok != ';') {
242 parseerror(parser, "expected semicolon");
246 (void)parser_next(parser);
250 else if (parser->tok == TOKEN_KEYWORD)
252 /* handle 'var' and 'const' */
255 else if (parser->tok == '.')
257 /* entity-member declaration */
262 parseerror(parser, "unexpected token: %s", parser->lex->tok->value);
268 bool parser_compile(const char *filename)
274 parser = (parser_t*)mem_a(sizeof(parser_t));
278 MEM_VECTOR_INIT(parser, globals);
279 parser->lex = lex_open(filename);
282 printf("failed to open file \"%s\"\n", filename);
286 /* initial lexer/parser state */
287 parser->lex->flags.noops = true;
289 if (parser_next(parser))
291 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
293 if (!parser_do(parser)) {
294 if (parser->tok == TOKEN_EOF)
295 parseerror(parser, "unexpected eof");
297 parseerror(parser, "parse error\n");
298 lex_close(parser->lex);
305 lex_close(parser->lex);
307 ir = ir_builder_new("gmqcc_out");
309 printf("failed to allocate builder\n");
313 for (i = 0; i < parser->globals_count; ++i) {
314 if (!ast_global_codegen(parser->globals[i], ir)) {
315 printf("failed to generate global %s\n", parser->globals[i]->name);
318 for (i = 0; i < parser->functions_count; ++i) {
319 if (!ast_function_codegen(parser->functions[i], ir)) {
320 printf("failed to generate function %s\n", parser->functions[i]->name);
322 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
323 printf("failed to finalize function %s\n", parser->functions[i]->name);
327 ir_builder_dump(ir, printf);
330 for (i = 0; i < parser->globals_count; ++i) {
331 ast_value_delete(parser->globals[i]);
333 MEM_VECTOR_CLEAR(parser, globals);