+ //impl->decl->impl = impl;
+
+ return 1;
+}
+
+static inline impl_arg *locate_impl_var_arg(impl_var *var, impl_args *args) {
+ size_t i;
+
+ for (i = 0; i < args->count; ++i) {
+ impl_arg *iarg = args->args[i];
+
+ if (!strcmp(var->name, iarg->var->name)) {
+ return var->arg = iarg;
+ }
+ }
+
+ return NULL;
+}
+
+static inline int validate_let_func(PSI_Data *data, let_func *func, impl *impl) {
+ if (impl->func->args) {
+ if (!locate_impl_var_arg(func->var, impl->func->args)) {
+ data->error(data, func->var->token, PSI_WARNING,
+ "Unknown variable '$%s' of `let` statement"
+ " for cast '%s' of implementation '%s'",
+ func->var->name, func->name, impl->func->name);
+ return 0;
+ }
+ }
+ switch (func->type) {
+ case PSI_T_BOOLVAL: func->handler = psi_let_boolval; break;
+ case PSI_T_INTVAL: func->handler = psi_let_intval; break;
+ case PSI_T_FLOATVAL: func->handler = psi_let_floatval; break;
+ case PSI_T_STRVAL: func->handler = psi_let_strval; break;
+ case PSI_T_STRLEN: func->handler = psi_let_strlen; break;
+ case PSI_T_PATHVAL: func->handler = psi_let_pathval; break;
+ case PSI_T_ARRVAL: func->handler = psi_let_arrval; break;
+ case PSI_T_OBJVAL: func->handler = psi_let_objval; break;
+ case PSI_T_ZVAL: func->handler = psi_let_zval; break;
+ EMPTY_SWITCH_DEFAULT_CASE();
+ }
+ return 1;
+}
+
+static inline int validate_let_callback(PSI_Data *data, decl_var *cb_var, let_callback *cb, impl *impl) {
+ size_t i;
+ decl *cb_func;
+ decl_type *cb_type = real_decl_type(cb_var->arg->type);
+
+ if (!validate_let_func(data, cb->func, impl)) {
+ return 0;
+ }
+
+ if (cb_type->type != PSI_T_FUNCTION) {
+ data->error(data, cb_var->token, PSI_WARNING, "Not a function: %s", cb_var->name);
+ return 0;
+ }
+ cb_func = cb_type->func;
+ for (i = 0; i < cb->args->count; ++i) {
+ if (!validate_set_value(data, cb->args->vals[i], cb_func->args->count, cb_func->args->args, 0)) {
+ return 0;
+ }
+ }
+
+ if (!validate_decl_nodl(data, cb_func)) {
+ return 0;
+ }
+
+ cb->decl = cb_func;