return v;
}
-#if 0
-typedef struct {
- MEM_VECTOR_MAKE(ast_value*, p);
-} paramlist_t;
-MEM_VEC_FUNCTIONS(paramlist_t, ast_value*, p)
-
-static ast_value *parse_type(parser_t *parser, int basetype, bool *isfunc)
-{
- paramlist_t params;
- ast_value *var;
- lex_ctx ctx = parser_ctx(parser);
- int vtype = basetype;
- int temptype;
- size_t i;
- bool variadic = false;
-
- MEM_VECTOR_INIT(¶ms, p);
-
- *isfunc = false;
-
- if (parser->tok == '(') {
- *isfunc = true;
- while (true) {
- ast_value *param;
- ast_value *fld;
- bool isfield = false;
- bool isfuncparam = false;
-
- if (!parser_next(parser))
- goto on_error;
-
- if (parser->tok == ')')
- break;
-
- if (parser->tok == '.') {
- isfield = true;
- if (!parser_next(parser)) {
- parseerror(parser, "expected field parameter type");
- goto on_error;
- }
- }
-
- if (parser->tok == TOKEN_DOTS) {
- /* variadic args */
- variadic = true;
- if (!parser_next(parser))
- goto on_error;
- if (parser->tok != ')') {
- parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
- goto on_error;
- }
- if (opts_standard == COMPILER_QCC) {
- if (parsewarning(parser, WARN_EXTENSIONS, "variadic functions are not available in this standard"))
- goto on_error;
- }
- break;
- }
-
- temptype = parser_token(parser)->constval.t;
- if (!parser_next(parser))
- goto on_error;
-
- param = parse_type(parser, temptype, &isfuncparam);
-
- if (!param)
- goto on_error;
-
- if (parser->tok == TOKEN_IDENT) {
- /* named parameter */
- if (!ast_value_set_name(param, parser_tokval(parser)))
- goto on_error;
- if (!parser_next(parser))
- goto on_error;
- }
-
- /* This comes before the isfield part! */
- if (isfuncparam) {
- ast_value *fval = ast_value_new(ast_ctx(param), param->name, TYPE_FUNCTION);
- if (!fval) {
- ast_delete(param);
- goto on_error;
- }
- fval->expression.next = (ast_expression*)param;
- MEM_VECTOR_MOVE(¶m->expression, params, &fval->expression, params);
- fval->expression.variadic = param->expression.variadic;
- param = fval;
- }
-
- if (isfield) {
- fld = ast_value_new(ctx, param->name, TYPE_FIELD);
- fld->expression.next = (ast_expression*)param;
- param = fld;
- }
-
- if (!paramlist_t_p_add(¶ms, param)) {
- parseerror(parser, "Out of memory while parsing typename");
- goto on_error;
- }
-
- if (parser->tok == ',')
- continue;
- if (parser->tok == ')')
- break;
- parseerror(parser, "Unexpected token");
- goto on_error;
- }
- if (!parser_next(parser))
- goto on_error;
- }
-
- if (params.p_count > 8)
- parseerror(parser, "more than 8 parameters are currently not supported");
-
- var = ast_value_new(ctx, "<unnamed>", vtype);
- if (!var)
- goto on_error;
- var->expression.variadic = variadic;
- MEM_VECTOR_MOVE(¶ms, p, &var->expression, params);
- return var;
-on_error:
- for (i = 0; i < params.p_count; ++i)
- ast_value_delete(params.p[i]);
- MEM_VECTOR_CLEAR(¶ms, p);
- return NULL;
-}
-#endif
-
typedef struct
{
size_t etype; /* 0 = expression, others are operators */
if (ve[1].var) mem_d(ve[1].var);
if (ve[2].var) mem_d(ve[2].var);
return retval;
-
-#if 0
- bool isfunc = false;
- lex_ctx ctx;
-
- ast_value *var = NULL;
- ast_value *fld = NULL;
- bool cleanvar = false;
-
- varentry_t varent;
- varentry_t ve[3];
-
- ast_expression *olddecl;
-
- ast_value *typevar;
-
- bool hadproto;
- bool isparam;
-
- bool retval = true;
- bool isfield = false;
-
- /* go */
-
- int basetype;
-
- if (parser->tok == '.') {
- isfield = true;
- if (!parser_next(parser)) {
- parseerror(parser, "expected typename for field definition");
- return false;
- }
- }
-
- basetype = parser_token(parser)->constval.t;
-
- if (!parser_next(parser)) {
- parseerror(parser, "expected variable definition");
- return false;
- }
-
- typevar = parse_type(parser, basetype, &isfunc);
- if (!typevar)
- return false;
-
- while (true)
- {
- hadproto = false;
- olddecl = NULL;
- isparam = false;
- varent.name = NULL;
-
- ve[0].name = ve[1].name = ve[2].name = NULL;
- ve[0].var = ve[1].var = ve[2].var = NULL;
-
- ctx = parser_ctx(parser);
- var = ast_value_copy(typevar);
- cleanvar = true;
-
- if (!var) {
- parseerror(parser, "failed to create variable");
- retval = false;
- goto cleanup;
- }
-
- if (parser->tok != TOKEN_IDENT) {
- parseerror(parser, "expected variable name");
- retval = false;
- goto cleanup;
- }
-
- if (!localblock) {
- bool was_end = false;
- if (!strcmp(parser_tokval(parser), "end_sys_globals")) {
- parser->crc_globals = parser->globals_count;
- was_end = true;
- }
- else if (!strcmp(parser_tokval(parser), "end_sys_fields")) {
- parser->crc_fields = parser->fields_count;
- was_end = true;
- }
- if (isfield && was_end) {
- if (parsewarning(parser, WARN_END_SYS_FIELDS,
- "global '%s' hint should not be a field",
- parser_tokval(parser)))
- {
- retval = false;
- goto cleanup;
- }
-
- }
- }
-
- if (!ast_value_set_name(var, parser_tokval(parser))) {
- parseerror(parser, "failed to set variable name\n");
- retval = false;
- goto cleanup;
- }
-
- if (isfunc) {
- /* a function was defined */
- ast_value *fval;
- ast_value *proto = NULL;
- bool dummy;
-
- if (!localblock)
- olddecl = parser_find_global(parser, parser_tokval(parser));
- else
- olddecl = parser_find_local(parser, parser_tokval(parser), parser->blocklocal, &dummy);
-
- if (olddecl) {
- /* we had a prototype */
- if (!ast_istype(olddecl, ast_value)) {
- /* vector v;
- * void() v_x = {}
- */
- parseerror(parser, "cannot declare a function with the same name as a vector's member: %s",
- parser_tokval(parser));
- retval = false;
- goto cleanup;
- }
-
- proto = (ast_value*)olddecl;
- }
-
- /* turn var into a value of TYPE_FUNCTION, with the old var
- * as return type
- */
- fval = ast_value_new(ctx, var->name, TYPE_FUNCTION);
- if (!fval) {
- retval = false;
- goto cleanup;
- }
-
- fval->expression.next = (ast_expression*)var;
- MEM_VECTOR_MOVE(&var->expression, params, &fval->expression, params);
- fval->expression.variadic = var->expression.variadic;
- var = NULL;
-
- /* we compare the type late here, but it's easier than
- * messing with the parameter-vector etc. earlier
- */
- if (proto) {
- size_t param;
- if (!ast_compare_type((ast_expression*)proto, (ast_expression*)fval)) {
- parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
- proto->name,
- ast_ctx(proto).file, ast_ctx(proto).line);
- ast_value_delete(fval);
- retval = false;
- goto cleanup;
- }
- /* copy over the parameter names */
- for (param = 0; param < fval->expression.params_count; ++param)
- ast_value_set_name(proto->expression.params[param], fval->expression.params[param]->name);
- /* copy the new context */
- ast_ctx(proto) = ast_ctx(fval);
-
- /* now ditch the rest of the new data */
- ast_value_delete(fval);
- fval = proto;
- hadproto = true;
- }
-
- var = fval;
- }
-
- if (isfield) {
- ast_value *tmp;
- fld = ast_value_new(ctx, var->name, TYPE_FIELD);
- fld->expression.next = (ast_expression*)var;
- tmp = var;
- var = fld;
- fld = tmp;
- }
- else
- fld = var;
-
- if (!isfunc) {
- if (!localblock)
- {
- olddecl = parser_find_global(parser, var->name);
- if (olddecl) {
- if (!isfield) {
- parseerror(parser, "global `%s` already declared here: %s:%i",
- var->name, ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line);
- retval = false;
- goto cleanup;
- }
- else if (opts_standard == COMPILER_QCC) {
- parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
- parseerror(parser, "global `%s` already declared here: %s:%i",
- var->name, ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line);
- retval = false;
- goto cleanup;
- }
- }
- olddecl = parser_find_field(parser, var->name);
- if (olddecl && opts_standard == COMPILER_QCC) {
- if (!isfield) {
- parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
- parseerror(parser, "field `%s` already declared here: %s:%i",
- var->name, ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line);
- retval = false;
- goto cleanup;
- }
- else
- {
- if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
- var->name, ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line))
- {
- retval = false;
- goto cleanup;
- }
- if (!ast_compare_type(olddecl, (ast_expression*)var)) {
- parseerror(parser, "field %s has previously been declared with a different type here: %s:%i",
- var->name, ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line);
- retval = false;
- goto cleanup;
- }
- ast_delete(var);
- var = NULL;
- goto nextvar;
- }
- }
- else if (olddecl) {
- parseerror(parser, "field `%s` already declared here: %s:%i",
- var->name, ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line);
- retval = false;
- goto cleanup;
- }
- }
- }
- if (localblock) /* if it's a local: */
- {
- olddecl = parser_find_local(parser, var->name, parser->blocklocal, &isparam);
- if (opts_standard == COMPILER_GMQCC)
- {
- if (olddecl)
- {
- if (!isparam) {
- parseerror(parser, "local `%s` already declared here: %s:%i",
- var->name, ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line);
- retval = false;
- goto cleanup;
- }
- }
-
- if( (!isparam && olddecl) ||
- (olddecl = parser_find_local(parser, var->name, 0, &isparam))
- )
- {
- if (parsewarning(parser, WARN_LOCAL_SHADOWS,
- "local `%s` is shadowing a parameter", var->name))
- {
- parseerror(parser, "local `%s` already declared here: %s:%i",
- var->name, ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line);
- retval = false;
- goto cleanup;
- }
- }
- }
- else
- {
- if (olddecl)
- {
- if (isparam &&
- parsewarning(parser, WARN_LOCAL_SHADOWS,
- "a parameter is shadowing local `%s`", var->name))
- {
- ast_value_delete(var);
- var = NULL;
- retval = false;
- goto cleanup;
- }
- else if (!isparam)
- {
- parseerror(parser, "local `%s` already declared here: %s:%i",
- var->name, ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line);
- ast_value_delete(var);
- var = NULL;
- retval = false;
- goto cleanup;
- }
- ast_value_delete(var);
- var = NULL;
- goto nextvar;
- }
- }
- }
-
-
- if (!hadproto) {
- varent.name = util_strdup(var->name);
- varent.var = (ast_expression*)var;
-
- if (!localblock) {
- if (!isfield) {
- if (!(retval = parser_t_globals_add(parser, varent)))
- goto cleanup;
- }
- else {
- if (!(retval = parser_t_fields_add(parser, varent)))
- goto cleanup;
- }
- } else {
- if (!(retval = parser_t_locals_add(parser, varent)))
- goto cleanup;
- if (!(retval = ast_block_locals_add(localblock, var))) {
- parser->locals_count--;
- goto cleanup;
- }
- }
-
- if (fld->expression.vtype == TYPE_VECTOR)
- {
- size_t e;
- if (!create_vector_members(parser, var, ve)) {
- retval = false;
- goto cleanup;
- }
-
- if (!localblock) {
- for (e = 0; e < 3; ++e) {
- if (!isfield) {
- if (!(retval = parser_t_globals_add(parser, ve[e])))
- break;
- }
- else {
- if (!(retval = parser_t_fields_add(parser, ve[e])))
- break;
- }
- }
- if (!retval) {
- parser->globals_count -= e+1;
- goto cleanup;
- }
- } else {
- for (e = 0; e < 3; ++e) {
- if (!(retval = parser_t_locals_add(parser, ve[e])))
- break;
- if (!(retval = ast_block_collect(localblock, ve[e].var)))
- break;
- ve[e].var = NULL; /* from here it's being collected in the block */
- }
- if (!retval) {
- parser->locals_count -= e+1;
- localblock->locals_count--;
- goto cleanup;
- }
- }
- ve[0].name = ve[1].name = ve[2].name = NULL;
- ve[0].var = ve[1].var = ve[2].var = NULL;
- }
- cleanvar = false;
- varent.name = NULL;
- }
-
-nextvar:
- if (!(retval = parser_next(parser)))
- goto cleanup;
-
- if (parser->tok == ';') {
- ast_value_delete(typevar);
- return parser_next(parser);
- }
-
- if (parser->tok == ',') {
- /* another var */
- if (!(retval = parser_next(parser)))
- goto cleanup;
- continue;
- }
-
- if (!localblock && isfield) {
- parseerror(parser, "missing semicolon");
- ast_value_delete(typevar);
- return false;
- }
-
- /* NOTE: only 'typevar' needs to be deleted from here on, so 'cleanup' won't be used
- * to avoid having too many gotos
- */
- if (localblock && opts_standard == COMPILER_QCC) {
- if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
- "initializing expression turns variable `%s` into a constant in this standard",
- var->name) )
- {
- ast_value_delete(typevar);
- return false;
- }
- }
-
- if (parser->tok != '=') {
- if (opts_standard == COMPILER_QCC)
- parseerror(parser, "missing semicolon");
- else
- parseerror(parser, "missing semicolon or initializer");
- ast_value_delete(typevar);
- return false;
- }
-
- if (!parser_next(parser)) {
- ast_value_delete(typevar);
- return false;
- }
-
- if (parser->tok == '#') {
- ast_function *func;
-
- if (localblock) {
- parseerror(parser, "cannot declare builtins within functions");
- ast_value_delete(typevar);
- return false;
- }
- if (!isfunc) {
- parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
- ast_value_delete(typevar);
- return false;
- }
- if (!parser_next(parser)) {
- parseerror(parser, "expected builtin number");
- ast_value_delete(typevar);
- return false;
- }
- if (parser->tok != TOKEN_INTCONST) {
- parseerror(parser, "builtin number must be an integer constant");
- ast_value_delete(typevar);
- return false;
- }
- if (parser_token(parser)->constval.i <= 0) {
- parseerror(parser, "builtin number must be positive integer greater than zero");
- ast_value_delete(typevar);
- return false;
- }
-
- func = ast_function_new(ast_ctx(var), var->name, var);
- if (!func) {
- parseerror(parser, "failed to allocate function for `%s`", var->name);
- ast_value_delete(typevar);
- return false;
- }
- if (!parser_t_functions_add(parser, func)) {
- parseerror(parser, "failed to allocate slot for function `%s`", var->name);
- ast_function_delete(func);
- var->constval.vfunc = NULL;
- ast_value_delete(typevar);
- return false;
- }
-
- func->builtin = -parser_token(parser)->constval.i;
-
- if (!parser_next(parser)) {
- ast_value_delete(typevar);
- return false;
- }
- }
- else if (parser->tok == '{' || parser->tok == '[')
- {
- ast_value_delete(typevar);
- if (localblock) {
- parseerror(parser, "cannot declare functions within functions");
- return false;
- }
-
- if (!parse_function_body(parser, var)) {
- return false;
- }
- return true;
- } else {
- ast_expression *cexp;
- ast_value *cval;
-
- cexp = parse_expression_leave(parser, true);
- if (!cexp) {
- ast_value_delete(typevar);
- return false;
- }
-
- cval = (ast_value*)cexp;
- if (!ast_istype(cval, ast_value) || !cval->isconst)
- parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
- else
- {
- var->isconst = true;
- if (cval->expression.vtype == TYPE_STRING)
- var->constval.vstring = parser_strdup(cval->constval.vstring);
- else
- memcpy(&var->constval, &cval->constval, sizeof(var->constval));
- ast_unref(cval);
- }
- }
-
- if (parser->tok == ',') {
- /* another */
- continue;
- }
-
- if (parser->tok != ';') {
- parseerror(parser, "missing semicolon");
- ast_value_delete(typevar);
- return false;
- }
-
- (void)parser_next(parser);
-
- ast_value_delete(typevar);
- return true;
- }
-
-cleanup:
- ast_delete(typevar);
- if (var && cleanvar) ast_delete(var);
- if (varent.name) mem_d(varent.name);
- if (ve[0].name) mem_d(ve[0].name);
- if (ve[1].name) mem_d(ve[1].name);
- if (ve[2].name) mem_d(ve[2].name);
- if (ve[0].var) mem_d(ve[0].var);
- if (ve[1].var) mem_d(ve[1].var);
- if (ve[2].var) mem_d(ve[2].var);
-
- return retval;
-#endif
}
static bool parser_global_statement(parser_t *parser)
projects / xonotic / gmqcc.git / commitdiff