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marine/crates/wit-generator/src/default_export_api_config.rs
2020-09-16 01:14:15 +03:00

110 lines
3.3 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.
*/
use wasmer_wit::ast::Interfaces;
use wasmer_wit::types::InterfaceType as IType;
use wasmer_wit::ast::FunctionArg as IFunctionArg;
use once_cell::sync::Lazy;
pub(crate) struct ApiExportFuncDescriptor {
pub(crate) name: &'static str,
pub(crate) id: u32,
pub(crate) arguments: Vec<IFunctionArg>,
pub(crate) output_types: Vec<IType>,
}
impl ApiExportFuncDescriptor {
pub fn update_interfaces(&self, interfaces: &mut Interfaces<'_>) {
let func_type = wasmer_wit::ast::Type::Function {
arguments: self.arguments.clone(),
output_types: self.output_types.clone(),
};
interfaces.types.push(func_type);
let export = wasmer_wit::ast::Export {
name: self.name,
function_type: self.id,
};
interfaces.exports.push(export);
}
}
pub(crate) static ALLOCATE_FUNC: Lazy<ApiExportFuncDescriptor> =
Lazy::new(|| ApiExportFuncDescriptor {
name: "allocate",
id: 0,
arguments: vec![IFunctionArg {
name: String::from("size"),
ty: IType::I32,
}],
output_types: vec![IType::I32],
});
pub(crate) static DEALLOCATE_FUNC: Lazy<ApiExportFuncDescriptor> =
Lazy::new(|| ApiExportFuncDescriptor {
name: "deallocate",
id: 1,
arguments: vec![
IFunctionArg {
name: String::from("pointer"),
ty: IType::I32,
},
IFunctionArg {
name: String::from("size"),
ty: IType::I32,
},
],
output_types: vec![],
});
pub(crate) static GET_RESULT_SIZE_FUNC: Lazy<ApiExportFuncDescriptor> =
Lazy::new(|| ApiExportFuncDescriptor {
name: "get_result_size",
id: 2,
arguments: vec![],
output_types: vec![IType::I32],
});
pub(crate) static GET_RESULT_PTR_FUNC: Lazy<ApiExportFuncDescriptor> =
Lazy::new(|| ApiExportFuncDescriptor {
name: "get_result_ptr",
id: 3,
arguments: vec![],
output_types: vec![IType::I32],
});
pub(crate) static SET_RESULT_SIZE_FUNC: Lazy<ApiExportFuncDescriptor> =
Lazy::new(|| ApiExportFuncDescriptor {
name: "set_result_size",
id: 4,
arguments: vec![IFunctionArg {
name: String::from("result_size"),
ty: IType::I32,
}],
output_types: vec![],
});
pub(crate) static SET_RESULT_PTR_FUNC: Lazy<ApiExportFuncDescriptor> =
Lazy::new(|| ApiExportFuncDescriptor {
name: "set_result_ptr",
id: 5,
arguments: vec![IFunctionArg {
name: String::from("result_ptr"),
ty: IType::I32,
}],
output_types: vec![],
});