11 MEM_VECTOR_MAKE(ast_value*, globals);
14 MEM_VEC_FUNCTIONS(parser_t, ast_value*, globals)
16 void parseerror(parser_t *parser, const char *fmt, ...)
21 printf("error %s:%lu: ", parser->lex->tok->ctx.file, (unsigned long)parser->lex->tok->ctx.line);
32 bool parser_next(parser_t *parser)
34 /* lex_do kills the previous token */
35 parser->tok = lex_do(parser->lex);
36 if (parser->tok == TOKEN_EOF || parser->tok >= TOKEN_ERROR)
41 /* lift a token out of the parser so it's not destroyed by parser_next */
42 token *parser_lift(parser_t *parser)
44 token *tok = parser->lex->tok;
45 parser->lex->tok = NULL;
49 #define parser_tokval(p) (p->lex->tok->value)
50 #define parser_token(p) (p->lex->tok)
51 #define parser_ctx(p) (p->lex->tok->ctx)
53 ast_value* parser_find_global(parser_t *parser, const char *name)
56 for (i = 0; i < parser->globals_count; ++i) {
57 if (!strcmp(parser->globals[i]->name, name))
58 return parser->globals[i];
64 MEM_VECTOR_MAKE(ast_value*, p);
66 MEM_VEC_FUNCTIONS(paramlist_t, ast_value*, p)
68 ast_value *parser_parse_type(parser_t *parser)
72 lex_ctx ctx = parser_ctx(parser);
73 int vtype = parser_token(parser)->constval.t;
75 MEM_VECTOR_INIT(¶ms, p);
77 if (!parser_next(parser))
80 if (parser->tok == '(') {
84 if (!parser_next(parser)) {
85 MEM_VECTOR_CLEAR(¶ms, p);
89 param = parser_parse_type(parser);
91 MEM_VECTOR_CLEAR(¶ms, p);
95 if (!paramlist_t_p_add(¶ms, param)) {
96 MEM_VECTOR_CLEAR(¶ms, p);
97 parseerror(parser, "Out of memory while parsing typename");
101 if (parser->tok == ',')
103 if (parser->tok == ')')
105 MEM_VECTOR_CLEAR(¶ms, p);
106 parseerror(parser, "Unexpected token");
109 if (!parser_next(parser)) {
110 MEM_VECTOR_CLEAR(¶ms, p);
115 var = ast_value_new(ctx, "<unnamed>", vtype);
117 MEM_VECTOR_CLEAR(¶ms, p);
120 MEM_VECTOR_MOVE(¶ms, p, var, params);
124 bool parser_do(parser_t *parser)
126 if (parser->tok == TOKEN_TYPENAME)
128 lex_ctx ctx = parser_ctx(parser);
129 ast_value *var = parser_parse_type(parser);
133 if (parser->tok != TOKEN_IDENT) {
134 parseerror(parser, "expected variable name\n");
138 if (parser_find_global(parser, parser_tokval(parser))) {
139 ast_value_delete(var);
140 parseerror(parser, "global already exists: %s\n", parser_tokval(parser));
144 if (!ast_value_set_name(var, parser_tokval(parser))) {
145 parseerror(parser, "failed to set variable name\n");
146 ast_value_delete(var);
150 if (!parser_t_globals_add(parser, var) ||
151 !parser_next(parser))
153 ast_value_delete(var);
157 if (parser->tok == ';') {
158 if (!parser_next(parser))
159 return parser->tok == TOKEN_EOF;
163 if (parser->tok != '=') {
164 parseerror(parser, "expected '=' or ';'");
168 if (!parser_next(parser))
171 if (parser->tok == '#') {
172 /* builtin function */
175 if (!parser_next(parser)) {
176 parseerror(parser, "expected builtin number");
180 fval = ast_value_new(ctx, var->name, TYPE_FUNCTION);
181 func = ast_function_new(ctx, var->name, fval);
182 if (!fval || !func) {
183 if (fval) ast_value_delete(fval);
184 if (func) ast_function_delete(func);
188 fval->expression.next = (ast_expression*)var;
189 MEM_VECTOR_MOVE(var, params, fval, params);
191 /* replace the variable */
192 parser->globals[parser->globals_count-1] = fval;
194 parseerror(parser, "TODO, const assignment");
197 if (!parser_next(parser))
200 if (parser->tok != ';') {
201 parseerror(parser, "expected semicolon");
207 else if (parser->tok == TOKEN_KEYWORD)
209 /* handle 'var' and 'const' */
212 else if (parser->tok == '.')
214 /* entity-member declaration */
219 parseerror(parser, "unexpected token: %s", parser->lex->tok->value);
225 bool parser_compile(const char *filename)
231 parser = (parser_t*)mem_a(sizeof(parser_t));
235 MEM_VECTOR_INIT(parser, globals);
236 parser->lex = lex_open(filename);
239 printf("failed to open file \"%s\"\n", filename);
243 /* initial lexer/parser state */
244 parser->lex->flags.noops = true;
246 if (parser_next(parser))
248 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
250 if (!parser_do(parser)) {
251 if (parser->tok == TOKEN_EOF)
252 parseerror(parser, "unexpected eof");
254 parseerror(parser, "parse error\n");
255 lex_close(parser->lex);
262 lex_close(parser->lex);
264 ir = ir_builder_new("gmqcc_out");
266 printf("failed to allocate builder\n");
270 for (i = 0; i < parser->globals_count; ++i) {
271 if (!ast_global_codegen(parser->globals[i], ir)) {
272 printf("failed to generate global %s\n", parser->globals[i]->name);
276 ir_builder_dump(ir, printf);
279 for (i = 0; i < parser->globals_count; ++i) {
280 ast_value_delete(parser->globals[i]);
282 MEM_VECTOR_CLEAR(parser, globals);