mirror of
https://github.com/fluencelabs/marine.git
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111 lines
3.3 KiB
Rust
111 lines
3.3 KiB
Rust
/*
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* Copyright 2020 Fluence Labs Limited
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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use super::IRecordType;
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use super::itype_text_view;
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use crate::FaaSModuleInterface;
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use itertools::Itertools;
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use serde::Serialize;
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use std::fmt;
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use std::collections::HashMap;
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#[derive(Debug, PartialEq, Eq, Clone, Serialize)]
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pub struct FaaSInterface<'a> {
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pub modules: HashMap<&'a str, FaaSModuleInterface<'a>>,
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}
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impl<'a> fmt::Display for FaaSInterface<'a> {
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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print_record_types(self.modules.values(), f)?;
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print_functions_sign(self.modules.iter(), f)
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}
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}
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fn print_record_types<'r>(
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modules: impl Iterator<Item = &'r FaaSModuleInterface<'r>>,
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f: &mut fmt::Formatter<'_>,
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) -> fmt::Result {
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use std::collections::HashSet;
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let mut printed_record_types: HashSet<&IRecordType> = HashSet::new();
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for module in modules {
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for (_, record_type) in module.record_types.iter() {
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if !printed_record_types.insert(record_type) {
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// do not print record if it has been already printed
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continue;
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}
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writeln!(f, "data {}:", record_type.name)?;
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for field in record_type.fields.iter() {
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writeln!(
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f,
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" {}: {}",
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field.name,
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itype_text_view(&field.ty, &module.record_types)
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)?;
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}
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}
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}
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writeln!(f)
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}
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fn print_functions_sign<'r>(
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modules: impl Iterator<Item = (&'r &'r str, &'r FaaSModuleInterface<'r>)>,
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f: &mut fmt::Formatter<'_>,
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) -> fmt::Result {
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for (name, module_interface) in modules {
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writeln!(f, "{}:", *name)?;
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for function_signature in module_interface.function_signatures.iter() {
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write!(f, " fn {}(", function_signature.name)?;
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let args = function_signature
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.arguments
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.iter()
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.map(|arg| {
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format!(
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"{}: {}",
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arg.name,
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itype_text_view(&arg.ty, &module_interface.record_types)
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)
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})
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.join(", ");
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let outputs = &function_signature.outputs;
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if outputs.is_empty() {
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writeln!(f, "{})", args)?;
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} else if outputs.len() == 1 {
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writeln!(
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f,
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"{}) -> {}",
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args,
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itype_text_view(&outputs[0], &module_interface.record_types)
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)?;
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} else {
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// At now, multi values aren't supported - only one output type is possible
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unimplemented!()
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}
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}
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}
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Ok(())
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}
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