starlark 0.8.0

/*
 * 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::{
    environment::{GlobalsBuilder, MethodsBuilder},
    eval::Arguments,
    values::{structs::Struct, Value},
};

#[starlark_module]
pub fn global(builder: &mut GlobalsBuilder) {
    #[starlark(type(Struct::TYPE))]
    fn r#struct<'v>(args: &Arguments<'v, '_>) -> anyhow::Result<Struct<'v>> {
        args.no_positional_args(heap)?;
        Ok(Struct::new(args.names_map()?))
    }
}

#[starlark_module]
pub(crate) fn struct_methods(builder: &mut MethodsBuilder) {
    #[starlark(speculative_exec_safe)]
    fn to_json(this: Value) -> anyhow::Result<String> {
        this.to_json()
    }
}