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Diffstat (limited to 'third_party/rust/uniffi_bindgen/src/backend/declarations.rs')
-rw-r--r-- | third_party/rust/uniffi_bindgen/src/backend/declarations.rs | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/third_party/rust/uniffi_bindgen/src/backend/declarations.rs b/third_party/rust/uniffi_bindgen/src/backend/declarations.rs new file mode 100644 index 0000000000..320cfe995c --- /dev/null +++ b/third_party/rust/uniffi_bindgen/src/backend/declarations.rs @@ -0,0 +1,31 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +use super::CodeOracle; + +/// A trait that is able to render a declaration about a particular member declared in +/// the `ComponentInterface`. +/// Like `CodeType`, it can render declaration code and imports. It also is able to render +/// code at start-up of the FFI. +/// All methods are optional, and there is no requirement that the trait be used for a particular +/// `interface::` member. Thus, it can also be useful for conditionally rendering code. +pub trait CodeDeclaration { + /// A list of imports that are needed if this type is in use. + /// Classes are imported exactly once. + fn imports(&self, _oracle: &dyn CodeOracle) -> Option<Vec<String>> { + None + } + + /// Code (one or more statements) that is run on start-up of the library, + /// but before the client code has access to it. + fn initialization_code(&self, _oracle: &dyn CodeOracle) -> Option<String> { + None + } + + /// Code which represents this member. e.g. the foreign language class definition for + /// a given Object type. + fn definition_code(&self, _oracle: &dyn CodeOracle) -> Option<String> { + None + } +} |