/*
 * Copyright 2018 The Starlark in Rust Authors.
 * Copyright (c) Facebook, Inc. and its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

//! Implementation of `struct` function.
use crate as starlark;
use crate::{
    collections::SmallMap,
    environment::GlobalsBuilder,
    values::{structs::Struct, Value, ValueLike},
};

#[starlark_module]
pub fn global(builder: &mut GlobalsBuilder) {
    /// Creates a struct.
    ///
    /// `struct` creates a struct. It accepts keyword arguments, keys become
    /// struct field names, and values become field values.
    ///
    /// Examples:
    ///
    /// ```
    /// # starlark::assert::all_true(r#"
    /// struct(host='localhost', port=80).port == 80
    /// "host" in dir(struct(host='localhost', port=80))
    /// "port" in dir(struct(host='localhost', port=80))
    /// # "#);
    /// ```
    fn r#struct(kwargs: SmallMap<String, Value>) -> Struct<'v> {
        Ok(Struct { fields: kwargs })
    }
}

#[starlark_module]
pub(crate) fn struct_members(builder: &mut GlobalsBuilder) {
    fn to_json(this: Value) -> String {
        Ok(this.to_json())
    }
}
