int tok;
MEM_VECTOR_MAKE(ast_value*, globals);
+ MEM_VECTOR_MAKE(ast_function*, functions);
+
+ ast_function *function;
} parser_t;
MEM_VEC_FUNCTIONS(parser_t, ast_value*, globals)
+MEM_VEC_FUNCTIONS(parser_t, ast_function*, functions)
void parseerror(parser_t *parser, const char *fmt, ...)
{
return NULL;
}
+typedef struct {
+ MEM_VECTOR_MAKE(ast_value*, p);
+} paramlist_t;
+MEM_VEC_FUNCTIONS(paramlist_t, ast_value*, p)
+
+ast_value *parser_parse_type(parser_t *parser, bool *isfunc)
+{
+ paramlist_t params;
+ ast_value *var;
+ lex_ctx ctx = parser_ctx(parser);
+ int vtype = parser_token(parser)->constval.t;
+
+ MEM_VECTOR_INIT(¶ms, p);
+
+ *isfunc = false;
+
+ if (!parser_next(parser))
+ return NULL;
+
+ if (parser->tok == '(') {
+ *isfunc = true;
+ while (true) {
+ ast_value *param;
+ bool dummy;
+
+ if (!parser_next(parser)) {
+ MEM_VECTOR_CLEAR(¶ms, p);
+ return NULL;
+ }
+
+ if (parser->tok == ')')
+ break;
+
+ param = parser_parse_type(parser, &dummy);
+ (void)dummy;
+
+ if (!param) {
+ MEM_VECTOR_CLEAR(¶ms, p);
+ return NULL;
+ }
+
+ if (!paramlist_t_p_add(¶ms, param)) {
+ MEM_VECTOR_CLEAR(¶ms, p);
+ parseerror(parser, "Out of memory while parsing typename");
+ return NULL;
+ }
+
+ if (parser->tok == ',')
+ continue;
+ if (parser->tok == ')')
+ break;
+ MEM_VECTOR_CLEAR(¶ms, p);
+ parseerror(parser, "Unexpected token");
+ return NULL;
+ }
+ if (!parser_next(parser)) {
+ MEM_VECTOR_CLEAR(¶ms, p);
+ return NULL;
+ }
+ }
+
+ var = ast_value_new(ctx, "<unnamed>", vtype);
+ if (!var) {
+ MEM_VECTOR_CLEAR(¶ms, p);
+ return NULL;
+ }
+ MEM_VECTOR_MOVE(¶ms, p, var, params);
+ return var;
+}
+
+bool parser_parse_body(parser_t *parser)
+{
+ return false;
+}
+
bool parser_do(parser_t *parser)
{
if (parser->tok == TOKEN_TYPENAME)
{
- ast_value *var;
- int vtype = parser->lex->tok->constval.t;
-
- /* Declaring a variable */
- if (!parser_next(parser))
+ bool isfunc = false;
+ ast_function *func = NULL;
+ lex_ctx ctx = parser_ctx(parser);
+ ast_value *var = parser_parse_type(parser, &isfunc);
+ if (!var)
return false;
if (parser->tok != TOKEN_IDENT) {
return false;
}
- var = parser_find_global(parser, parser_tokval(parser));
-
- if (var) {
+ if (parser_find_global(parser, parser_tokval(parser))) {
+ ast_value_delete(var);
parseerror(parser, "global already exists: %s\n", parser_tokval(parser));
return false;
}
- var = ast_value_new(parser_ctx(parser), parser_tokval(parser), vtype);
- if (!parser_t_globals_add(parser, var))
+ if (!ast_value_set_name(var, parser_tokval(parser))) {
+ parseerror(parser, "failed to set variable name\n");
+ ast_value_delete(var);
return false;
+ }
- /* Constant assignment */
- if (!parser_next(parser))
+ if (isfunc) {
+ /* a function was defined */
+ ast_value *fval;
+
+ /* turn var into a value of TYPE_FUNCTION, with the old var
+ * as return type
+ */
+ fval = ast_value_new(ctx, var->name, TYPE_FUNCTION);
+ func = ast_function_new(ctx, var->name, fval);
+ if (!fval || !func) {
+ ast_value_delete(var);
+ if (fval) ast_value_delete(fval);
+ if (func) ast_function_delete(func);
+ return false;
+ }
+
+ fval->expression.next = (ast_expression*)var;
+ MEM_VECTOR_MOVE(var, params, fval, params);
+
+ if (!parser_t_functions_add(parser, func)) {
+ ast_value_delete(var);
+ if (fval) ast_value_delete(fval);
+ if (func) ast_function_delete(func);
+ return false;
+ }
+
+ var = fval;
+ }
+
+ if (!parser_t_globals_add(parser, var) ||
+ !parser_next(parser))
+ {
+ ast_value_delete(var);
return false;
+ }
- if (parser->tok == ';')
- return parser_next(parser);
+ if (parser->tok == ';') {
+ if (!parser_next(parser))
+ return parser->tok == TOKEN_EOF;
+ return true;
+ }
if (parser->tok != '=') {
parseerror(parser, "expected '=' or ';'");
return false;
}
- /* '=' found, assign... */
- parseerror(parser, "TODO, const assignment");
- return false;
+ if (!parser_next(parser))
+ return false;
+
+ if (parser->tok == '#') {
+ if (!isfunc || !func) {
+ parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
+ return false;
+ }
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected builtin number");
+ return false;
+ }
+ if (parser->tok != TOKEN_INTCONST) {
+ parseerror(parser, "builtin number must be an integer constant");
+ return false;
+ }
+ if (parser_token(parser)->constval.i <= 0) {
+ parseerror(parser, "builtin number must be positive integer greater than zero");
+ return false;
+ }
+
+ func->builtin = -parser_token(parser)->constval.i;
+ } else if (parser->tok == '{') {
+ /* function body */
+ bool ret;
+ ast_function *old = parser->function;
+ parser->function = func;
+ ret = parser_parse_body(parser);
+ parser->function = old;
+ return ret;
+ } else {
+ parseerror(parser, "TODO, const assignment");
+ }
+
+ if (!parser_next(parser))
+ return false;
+
+ if (parser->tok != ';') {
+ parseerror(parser, "expected semicolon");
+ return false;
+ }
+
+ (void)parser_next(parser);
+
+ return true;
}
else if (parser->tok == TOKEN_KEYWORD)
{
{
size_t i;
parser_t *parser;
+ ir_builder *ir;
parser = (parser_t*)mem_a(sizeof(parser_t));
if (!parser)
return false;
+ memset(&parser, 0, sizeof(parser));
+
MEM_VECTOR_INIT(parser, globals);
parser->lex = lex_open(filename);
{
if (!parser_do(parser)) {
if (parser->tok == TOKEN_EOF)
- break;
- printf("parse error\n");
+ parseerror(parser, "unexpected eof");
+ else
+ parseerror(parser, "parse error\n");
lex_close(parser->lex);
mem_d(parser);
return false;
}
lex_close(parser->lex);
+
+ ir = ir_builder_new("gmqcc_out");
+ if (!ir) {
+ printf("failed to allocate builder\n");
+ goto cleanup;
+ }
+
+ for (i = 0; i < parser->globals_count; ++i) {
+ if (!ast_global_codegen(parser->globals[i], ir)) {
+ printf("failed to generate global %s\n", parser->globals[i]->name);
+ }
+ }
+ for (i = 0; i < parser->functions_count; ++i) {
+ if (!ast_function_codegen(parser->functions[i], ir)) {
+ printf("failed to generate function %s\n", parser->functions[i]->name);
+ }
+ if (!ir_function_finalize(parser->functions[i]->ir_func)) {
+ printf("failed to finalize function %s\n", parser->functions[i]->name);
+ }
+ }
+
+ ir_builder_dump(ir, printf);
+
+cleanup:
for (i = 0; i < parser->globals_count; ++i) {
ast_value_delete(parser->globals[i]);
}
projects / xonotic / gmqcc.git / blobdiff