marine/fluence-faas/src/faas_interface.rs

/*
 * Copyright 2020 Fluence Labs Limited
 *
 * 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
 *
 *     http://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.
 */

use std::fmt;
use std::collections::HashMap;
use serde::Serialize;

#[derive(Debug, Serialize)]
pub struct FaaSInterface<'a> {
    pub modules: HashMap<&'a str, Vec<fce::FCEFunction<'a>>>,
}

impl<'a> fmt::Display for FaaSInterface<'a> {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        for (name, functions) in self.modules.iter() {
            writeln!(f, "{}", *name)?;

            for function in functions.iter() {
                writeln!(
                    f,
                    "  pub fn {}({:?}) -> {:?}",
                    function.name, function.inputs, function.outputs
                )?;
            }
        }

        Ok(())
    }
}