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 ast_value *var = parser_parse_type(parser);
132 if (parser->tok != TOKEN_IDENT) {
133 parseerror(parser, "expected variable name\n");
137 if (parser_find_global(parser, parser_tokval(parser))) {
138 ast_value_delete(var);
139 parseerror(parser, "global already exists: %s\n", parser_tokval(parser));
143 if (!ast_value_set_name(var, parser_tokval(parser))) {
144 parseerror(parser, "failed to set variable name\n");
145 ast_value_delete(var);
149 if (!parser_t_globals_add(parser, var))
152 /* Constant assignment */
153 if (!parser_next(parser))
156 if (parser->tok == ';')
157 return parser_next(parser);
159 if (parser->tok != '=') {
160 parseerror(parser, "expected '=' or ';'");
164 /* '=' found, assign... */
165 parseerror(parser, "TODO, const assignment");
168 else if (parser->tok == TOKEN_KEYWORD)
170 /* handle 'var' and 'const' */
173 else if (parser->tok == '.')
175 /* entity-member declaration */
180 parseerror(parser, "unexpected token: %s", parser->lex->tok->value);
186 bool parser_compile(const char *filename)
192 parser = (parser_t*)mem_a(sizeof(parser_t));
196 MEM_VECTOR_INIT(parser, globals);
197 parser->lex = lex_open(filename);
200 printf("failed to open file \"%s\"\n", filename);
204 /* initial lexer/parser state */
205 parser->lex->flags.noops = true;
207 if (parser_next(parser))
209 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
211 if (!parser_do(parser)) {
212 if (parser->tok == TOKEN_EOF)
214 printf("parse error\n");
215 lex_close(parser->lex);
222 lex_close(parser->lex);
224 ir = ir_builder_new("gmqcc_out");
226 printf("failed to allocate builder\n");
230 for (i = 0; i < parser->globals_count; ++i) {
231 if (!ast_global_codegen(parser->globals[i], ir)) {
232 printf("failed to generate global %s\n", parser->globals[i]->name);
236 ir_builder_dump(ir, printf);
239 for (i = 0; i < parser->globals_count; ++i) {
240 ast_value_delete(parser->globals[i]);
242 MEM_VECTOR_CLEAR(parser, globals);