Trait rustc_mir::util::elaborate_drops::DropElaborator

pub trait DropElaborator<'a, 'tcx: 'a>: Debug {
    type Path: Copy + Debug;
    fn patch(&mut self) -> &mut MirPatch<'tcx>;
    fn mir(&self) -> &'a Mir<'tcx>;
    fn tcx(&self) -> TyCtxt<'a, 'tcx, 'tcx>;
    fn param_env(&self) -> ParamEnv<'tcx>;
    fn drop_style(&self, path: Self::Path, mode: DropFlagMode) -> DropStyle;
    fn get_drop_flag(&mut self, path: Self::Path) -> Option<Operand<'tcx>>;
    fn clear_drop_flag(
        &mut self, 
        location: Location, 
        path: Self::Path, 
        mode: DropFlagMode
    );
    fn field_subpath(
        &self, 
        path: Self::Path, 
        field: Field
    ) -> Option<Self::Path>;
    fn deref_subpath(&self, path: Self::Path) -> Option<Self::Path>;
    fn downcast_subpath(
        &self, 
        path: Self::Path, 
        variant: usize
    ) -> Option<Self::Path>;
    fn array_subpath(
        &self, 
        path: Self::Path, 
        index: u32, 
        size: u32
    ) -> Option<Self::Path>;
}

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Associated Types

type Path: Copy + Debug

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Required Methods

fn patch(&mut self) -> &mut MirPatch<'tcx>

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fn mir(&self) -> &'a Mir<'tcx>

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fn tcx(&self) -> TyCtxt<'a, 'tcx, 'tcx>

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fn param_env(&self) -> ParamEnv<'tcx>

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fn drop_style(&self, path: Self::Path, mode: DropFlagMode) -> DropStyle

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fn get_drop_flag(&mut self, path: Self::Path) -> Option<Operand<'tcx>>

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fn clear_drop_flag(
    &mut self,
    location: Location,
    path: Self::Path,
    mode: DropFlagMode
)

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fn field_subpath(&self, path: Self::Path, field: Field) -> Option<Self::Path>

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fn deref_subpath(&self, path: Self::Path) -> Option<Self::Path>

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fn downcast_subpath(
    &self,
    path: Self::Path,
    variant: usize
) -> Option<Self::Path>

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fn array_subpath(
    &self,
    path: Self::Path,
    index: u32,
    size: u32
) -> Option<Self::Path>

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Implementors

impl<'a, 'b, 'tcx> DropElaborator<'a, 'tcx> for Elaborator<'a, 'b, 'tcx>

type Path = MovePathIndex

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fn patch(&mut self) -> &mut MirPatch<'tcx>

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fn mir(&self) -> &'a Mir<'tcx>

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fn tcx(&self) -> TyCtxt<'a, 'tcx, 'tcx>

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fn param_env(&self) -> ParamEnv<'tcx>

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fn drop_style(&self, path: Self::Path, mode: DropFlagMode) -> DropStyle

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fn clear_drop_flag(     &mut self,     loc: Location,     path: Self::Path,     mode: DropFlagMode )

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fn field_subpath(&self, path: Self::Path, field: Field) -> Option<Self::Path>

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fn array_subpath(     &self,     path: Self::Path,     index: u32,     size: u32 ) -> Option<Self::Path>

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fn deref_subpath(&self, path: Self::Path) -> Option<Self::Path>

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fn downcast_subpath(     &self,     path: Self::Path,     variant: usize ) -> Option<Self::Path>

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fn get_drop_flag(&mut self, path: Self::Path) -> Option<Operand<'tcx>>

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impl<'a, 'tcx> DropElaborator<'a, 'tcx> for DropShimElaborator<'a, 'tcx>

type Path = ()

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fn patch(&mut self) -> &mut MirPatch<'tcx>

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fn mir(&self) -> &'a Mir<'tcx>

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fn tcx(&self) -> TyCtxt<'a, 'tcx, 'tcx>

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fn param_env(&self) -> ParamEnv<'tcx>

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fn drop_style(&self, _path: Self::Path, mode: DropFlagMode) -> DropStyle

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fn get_drop_flag(&mut self, _path: Self::Path) -> Option<Operand<'tcx>>

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fn clear_drop_flag(     &mut self,     _location: Location,     _path: Self::Path,     _mode: DropFlagMode )

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fn field_subpath(&self, _path: Self::Path, _field: Field) -> Option<Self::Path>

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fn deref_subpath(&self, _path: Self::Path) -> Option<Self::Path>

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fn downcast_subpath(     &self,     _path: Self::Path,     _variant: usize ) -> Option<Self::Path>

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fn array_subpath(     &self,     _path: Self::Path,     _index: u32,     _size: u32 ) -> Option<Self::Path>

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