marine/crates/wit-parser/src/extractor.rs
2021-03-30 11:29:58 +03:00

61 lines
1.6 KiB
Rust

/*
* 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.
*/
mod functions;
mod wit;
pub use functions::*;
pub use wit::*;
use crate::Result;
use crate::WITParserError;
use fce_wit_interfaces::FCEWITInterfaces;
use std::path::Path;
pub fn module_interface<P>(module_path: P) -> Result<ServiceInterface>
where
P: AsRef<Path>,
{
create_fce_it_with(module_path, |it| get_interface(&it))
}
pub fn module_raw_interface<P>(module_path: P) -> Result<FCEModuleInterface>
where
P: AsRef<Path>,
{
create_fce_it_with(module_path, |it| get_raw_interface(&it))
}
fn create_fce_it_with<P, T>(
module_path: P,
transformer: impl FnOnce(FCEWITInterfaces<'_>) -> Result<T>,
) -> Result<T>
where
P: AsRef<Path>,
{
let module = walrus::ModuleConfig::new()
.parse_file(module_path)
.map_err(WITParserError::CorruptedWasmFile)?;
let raw_custom_section = extract_custom_section(&module)?;
let custom_section_bytes = raw_custom_section.as_ref();
let wit = extract_wit_from_bytes(custom_section_bytes)?;
let fce_interface = FCEWITInterfaces::new(wit);
transformer(fce_interface)
}