diff options
Diffstat (limited to 'compiler/rustc_middle/src/ty/binding.rs')
-rw-r--r-- | compiler/rustc_middle/src/ty/binding.rs | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/compiler/rustc_middle/src/ty/binding.rs b/compiler/rustc_middle/src/ty/binding.rs new file mode 100644 index 000000000..3d65429f2 --- /dev/null +++ b/compiler/rustc_middle/src/ty/binding.rs @@ -0,0 +1,22 @@ +use rustc_hir::BindingAnnotation; +use rustc_hir::BindingAnnotation::*; +use rustc_hir::Mutability; + +#[derive(Clone, PartialEq, TyEncodable, TyDecodable, Debug, Copy, HashStable)] +pub enum BindingMode { + BindByReference(Mutability), + BindByValue(Mutability), +} + +TrivialTypeTraversalAndLiftImpls! { BindingMode, } + +impl BindingMode { + pub fn convert(ba: BindingAnnotation) -> BindingMode { + match ba { + Unannotated => BindingMode::BindByValue(Mutability::Not), + Mutable => BindingMode::BindByValue(Mutability::Mut), + Ref => BindingMode::BindByReference(Mutability::Not), + RefMut => BindingMode::BindByReference(Mutability::Mut), + } + } +} |