+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_val(struct psi_data *data, let_val *val, decl_var *let_var, impl *impl);
+
+static inline const char *locate_let_val_varname(let_val *val) {
+ if (val) {
+ switch (val->kind) {
+ case PSI_LET_CALLBACK:
+ return &val->data.callback->func->var->name[1];
+ case PSI_LET_FUNC:
+ return &val->data.func->var->name[1];
+ default:
+ break;
+ }
+ }
+ return NULL;
+}
+
+static inline int validate_let_func(struct psi_data *data, let_func *func, decl_var *let_var, impl *impl) {
+ if (func->outer) {
+
+ }
+ if (impl->func->args) {
+ locate_impl_var_arg(func->var, impl->func->args);
+ }
+ if (!func->var->arg && !func->ref) {
+ data->error(data, func->var->token, PSI_WARNING,
+ "Unknown variable '%s%s' of `let` statement"
+ " for cast '%s' of implementation '%s'",
+ *func->var->name == '$' ? "" : "$",
+ 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;
+ case PSI_T_VOID: func->handler = psi_let_void; break;
+ EMPTY_SWITCH_DEFAULT_CASE();
+ }
+
+ if (func->inner) {
+ size_t i;
+ decl_type *var_typ = real_decl_type(let_var->arg->type);
+ decl_args *sub_args;
+
+ switch (var_typ->type) {
+ case PSI_T_STRUCT:
+ sub_args = var_typ->real.strct->args;
+ break;
+ case PSI_T_UNION:
+ sub_args = var_typ->real.unn->args;
+ break;
+ default:
+ data->error(data, let_var->token, PSI_WARNING,
+ "Inner let statement's values must refer to a structure type, got '%s' for '%s'",
+ real_decl_type(let_var->arg->type)->name, let_var->name);
+ return 0;
+ }
+
+ for (i = 0; i < func->inner->count; ++i) {
+ let_val *inner = func->inner->vals[i];
+ let_val *outer = func->outer;
+ const char *name = locate_let_val_varname(inner);
+ decl_arg *sub_arg;
+
+ if (name) {
+ sub_arg = locate_decl_arg(sub_args, name);
+ }
+ if (!name || !sub_arg) {
+ data->error(data, let_var->token, PSI_WARNING,
+ "Unknown variable '%s' of '%s'",
+ name,
+ var_typ->real.strct->name);
+ return 0;
+ }
+ if (!validate_let_val(data, inner, sub_arg->var, impl)) {
+ return 0;
+ }
+ }
+ }
+ return 1;
+}
+
+static inline int validate_let_callback(struct 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, cb_var, 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->real.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;
+
+ return 1;
+}
+
+static inline int validate_let_val(struct psi_data *data, let_val *val, decl_var *let_var, impl *impl) {
+
+ switch (val->kind) {
+ case PSI_LET_NULL:
+ break;
+ case PSI_LET_TMP:
+ if (!let_var) {
+ data->error(data, NULL, PSI_WARNING,
+ "Ivalid let statement value of implementation '%s'",
+ impl->func->name);
+ return 0;
+ }
+ /* e.g. let bar = &strval($bar); // decl_arg(char **bar) */
+ /* e.g. let foo = *bar; */
+ let_var->pointer_level = val->data.var->pointer_level;
+ let_var->arg = init_decl_arg(
+ init_decl_type(
+ real_decl_type(val->data.var->arg->type)->type,
+ real_decl_type(val->data.var->arg->type)->name),
+ init_decl_var(
+ let_var->name,
+ let_var->pointer_level,
+ let_var->array_size));
+ break;
+ case PSI_LET_NUMEXP:
+ if (!validate_num_exp(data, val->data.num, impl->decl->args, impl->decl->func, NULL)) {
+ return 0;
+ }
+ break;
+ case PSI_LET_CALLOC:
+ if (!validate_num_exp(data, val->data.alloc->nmemb, impl->decl->args, impl->decl->func, NULL)) {
+ return 0;
+ }
+ if (!validate_num_exp(data, val->data.alloc->size, impl->decl->args, impl->decl->func, NULL)) {
+ return 0;
+ }
+ break;
+ case PSI_LET_CALLBACK:
+ if (!let_var) {
+ data->error(data, NULL, PSI_WARNING,
+ "Ivalid let statement value of implementation '%s'",
+ impl->func->name);
+ return 0;
+ }
+ if (val->data.callback->func->inner) {
+ size_t i;
+ decl_type *var_typ = real_decl_type(let_var->arg->type);
+ decl_args *sub_args;
+
+ switch (var_typ->type) {
+ case PSI_T_STRUCT:
+ sub_args = var_typ->real.strct->args;
+ break;
+ case PSI_T_UNION:
+ sub_args = var_typ->real.unn->args;
+ break;
+ default:
+ data->error(data, let_var->token, PSI_WARNING,
+ "Inner let statement's values must refer to a structure type, got '%s' for '%s'",
+ real_decl_type(let_var->arg->type)->name, let_var->name);
+ return 0;
+ }
+ for (i = 0; i < val->data.callback->func->inner->count; ++i) {
+ let_val *inner = val->data.callback->func->inner->vals[i];
+ switch (inner->kind) {
+ case PSI_LET_FUNC:
+ inner->data.func->outer = val;
+ inner->data.func->ref = locate_decl_arg(sub_args,
+ &inner->data.func->var->name[1]);
+ break;
+
+ break;
+ case PSI_LET_CALLBACK:
+ inner->data.callback->func->outer = val;
+ inner->data.callback->func->ref = locate_decl_arg(sub_args,
+ &inner->data.callback->func->var->name[1]);
+ break;
+ }
+ }
+ }
+ if (!validate_let_callback(data, let_var, val->data.callback, impl)) {
+ return 0;
+ }
+ break;
+ case PSI_LET_FUNC:
+ if (val->data.func->inner) {
+ size_t i;
+ decl_type *var_typ = real_decl_type(let_var->arg->type);
+ decl_args *sub_args;
+
+ switch (var_typ->type) {
+ case PSI_T_STRUCT:
+ sub_args = var_typ->real.strct->args;
+ break;
+ case PSI_T_UNION:
+ sub_args = var_typ->real.unn->args;
+ break;
+ default:
+ data->error(data, let_var->token, PSI_WARNING,
+ "Inner let statement's values must refer to a structure type, got '%s' for '%s'",
+ real_decl_type(let_var->arg->type)->name, let_var->name);
+ return 0;
+ }
+ for (i = 0; i < val->data.func->inner->count; ++i) {
+ let_val *inner = val->data.func->inner->vals[i];
+ switch (inner->kind) {
+ case PSI_LET_FUNC:
+ inner->data.func->outer = val;
+ inner->data.func->ref = locate_decl_arg(sub_args,
+ &inner->data.func->var->name[1]);
+ break;
+ case PSI_LET_CALLBACK:
+ inner->data.callback->func->outer = val;
+ inner->data.callback->func->ref = locate_decl_arg(sub_args,
+ &inner->data.callback->func->var->name[1]);
+ break;
+ }
+ }
+ }
+
+ val->data.func->var;
+
+ if (!validate_let_func(data, val->data.func, let_var, impl)) {
+ return 0;
+ }
+ break;
+ }
+
+ return 1;
+}
+
+static inline int validate_impl_let_stmts(struct psi_data *data, impl *impl) {