/* * 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. */ //! Rust backend SDK for applications on the Fluence network. This crate defines the procedure macro //! `#[fce]` that could be applied to a function, structure or extern block. //! //! Structures with `#[fce]` (hereinafter they'll be called records) could be used then in function //! arguments and values. All fields of a record should be public and have one of the //! following primitive Rust types //! (`bool, u8, u16, u32, u64, i8, i16, i32, i64, f32, f64, String, Vec`). //! ```rust //! use fluence::fce; //! //! #[fce] //! struct T { //! pub field_1: i32, //! pub field_2: Vec, //! } //! ``` //! //! Functions with `#[fce]` will be exported from this module: //! //! ```rust //! use fluence::fce; //! //! #[fce] //! pub fn get(url: String) { //! // ... //! } //! ``` //! At now, such functions could have arguments with primitive Rust types and record and only one //! return argument with such type could be used. //! //! Finally, to import other wasm modules to your project use similar code: //! ```rust //! use fluence::fce; //! //! #[fce] //! #[link(wasm_import_module = "wasm_curl.wasm")] //! extern "C" { //! #[link_name = "get"] //! pub fn curl_get(url: String) -> String; //! } //! ``` #![doc(html_root_url = "https://docs.rs/fluence/0.2.3")] #![deny( dead_code, nonstandard_style, unused_imports, unused_mut, unused_variables, unused_unsafe, unreachable_patterns )] #![warn(rust_2018_idioms)] extern crate fluence_sdk_macro; extern crate fluence_sdk_main; pub use fluence_sdk_macro::fce; pub use fluence_sdk_main::CallParameters; #[cfg(target_arch = "wasm32")] pub use fluence_sdk_main::get_call_parameters; #[cfg(feature = "logger")] pub use fluence_sdk_main::WasmLogger; /// These API functions are intended for internal usage in generated code. /// Normally, you shouldn't use them. pub mod internal { pub use fluence_sdk_main::get_result_ptr; pub use fluence_sdk_main::get_result_size; pub use fluence_sdk_main::set_result_ptr; pub use fluence_sdk_main::set_result_size; pub use safe_transmute::transmute_vec; }