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 param = parser_parse_type(parser, &dummy);
99 MEM_VECTOR_CLEAR(¶ms, p);
103 if (!paramlist_t_p_add(¶ms, param)) {
104 MEM_VECTOR_CLEAR(¶ms, p);
105 parseerror(parser, "Out of memory while parsing typename");
109 if (parser->tok == ',')
111 if (parser->tok == ')')
113 MEM_VECTOR_CLEAR(¶ms, p);
114 parseerror(parser, "Unexpected token");
117 if (!parser_next(parser)) {
118 MEM_VECTOR_CLEAR(¶ms, p);
123 var = ast_value_new(ctx, "<unnamed>", vtype);
125 MEM_VECTOR_CLEAR(¶ms, p);
128 MEM_VECTOR_MOVE(¶ms, p, var, params);
132 bool parser_do(parser_t *parser)
134 if (parser->tok == TOKEN_TYPENAME)
137 ast_function *func = NULL;
138 lex_ctx ctx = parser_ctx(parser);
139 ast_value *var = parser_parse_type(parser, &isfunc);
143 if (parser->tok != TOKEN_IDENT) {
144 parseerror(parser, "expected variable name\n");
148 if (parser_find_global(parser, parser_tokval(parser))) {
149 ast_value_delete(var);
150 parseerror(parser, "global already exists: %s\n", parser_tokval(parser));
154 if (!ast_value_set_name(var, parser_tokval(parser))) {
155 parseerror(parser, "failed to set variable name\n");
156 ast_value_delete(var);
161 /* a function was defined */
164 /* turn var into a value of TYPE_FUNCTION, with the old var
167 fval = ast_value_new(ctx, var->name, TYPE_FUNCTION);
168 func = ast_function_new(ctx, var->name, fval);
169 if (!fval || !func) {
170 ast_value_delete(var);
171 if (fval) ast_value_delete(fval);
172 if (func) ast_function_delete(func);
176 fval->expression.next = (ast_expression*)var;
177 MEM_VECTOR_MOVE(var, params, func, params);
179 if (!parser_t_functions_add(parser, func)) {
180 ast_value_delete(var);
181 if (fval) ast_value_delete(fval);
182 if (func) ast_function_delete(func);
189 if (!parser_t_globals_add(parser, var) ||
190 !parser_next(parser))
192 ast_value_delete(var);
196 if (parser->tok == ';') {
197 if (!parser_next(parser))
198 return parser->tok == TOKEN_EOF;
202 if (parser->tok != '=') {
203 parseerror(parser, "expected '=' or ';'");
207 if (!parser_next(parser))
210 if (parser->tok == '#') {
212 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
215 if (!parser_next(parser)) {
216 parseerror(parser, "expected builtin number");
219 if (parser->tok != TOKEN_INTCONST) {
220 parseerror(parser, "builtin number must be an integer constant");
223 if (parser_token(parser)->constval.i <= 0) {
224 parseerror(parser, "builtin number must be positive integer greater than zero");
229 func->builtin = -parser_token(parser)->constval.i;
230 } else if (parser->tok == '{') {
233 parseerror(parser, "TODO, const assignment");
236 if (!parser_next(parser))
239 if (parser->tok != ';') {
240 parseerror(parser, "expected semicolon");
246 else if (parser->tok == TOKEN_KEYWORD)
248 /* handle 'var' and 'const' */
251 else if (parser->tok == '.')
253 /* entity-member declaration */
258 parseerror(parser, "unexpected token: %s", parser->lex->tok->value);
264 bool parser_compile(const char *filename)
270 parser = (parser_t*)mem_a(sizeof(parser_t));
274 MEM_VECTOR_INIT(parser, globals);
275 parser->lex = lex_open(filename);
278 printf("failed to open file \"%s\"\n", filename);
282 /* initial lexer/parser state */
283 parser->lex->flags.noops = true;
285 if (parser_next(parser))
287 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
289 if (!parser_do(parser)) {
290 if (parser->tok == TOKEN_EOF)
291 parseerror(parser, "unexpected eof");
293 parseerror(parser, "parse error\n");
294 lex_close(parser->lex);
301 lex_close(parser->lex);
303 ir = ir_builder_new("gmqcc_out");
305 printf("failed to allocate builder\n");
309 for (i = 0; i < parser->globals_count; ++i) {
310 if (!ast_global_codegen(parser->globals[i], ir)) {
311 printf("failed to generate global %s\n", parser->globals[i]->name);
314 for (i = 0; i < parser->functions_count; ++i) {
315 if (!ast_function_codegen(parser->functions[i], ir)) {
316 printf("failed to generate function %s\n", parser->functions[i]->name);
318 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
319 printf("failed to finalize function %s\n", parser->functions[i]->name);
323 ir_builder_dump(ir, printf);
326 for (i = 0; i < parser->globals_count; ++i) {
327 ast_value_delete(parser->globals[i]);
329 MEM_VECTOR_CLEAR(parser, globals);