Struct rustc_mir::interpret::Frame

pub struct Frame<'mir, 'tcx: 'mir> {
    pub mir: &'mir Mir<'tcx>,
    pub instance: Instance<'tcx>,
    pub span: Span,
    pub return_to_block: StackPopCleanup,
    pub return_place: Place,
    pub locals: IndexVec<Local, Option<Value>>,
    pub block: BasicBlock,
    pub stmt: usize,
}

🔬 This is a nightly-only experimental API. (rustc_private)

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A stack frame.

Fields

mir: &'mir Mir<'tcx>

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The MIR for the function called on this frame.

instance: Instance<'tcx>

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The def_id and substs of the current function

span: Span

🔬 This is a nightly-only experimental API. (rustc_private)

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The span of the call site.

return_to_block: StackPopCleanup

🔬 This is a nightly-only experimental API. (rustc_private)

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The block to return to when returning from the current stack frame

return_place: Place

🔬 This is a nightly-only experimental API. (rustc_private)

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The location where the result of the current stack frame should be written to.

locals: IndexVec<Local, Option<Value>>

🔬 This is a nightly-only experimental API. (rustc_private)

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The list of locals for this stack frame, stored in order as [return_ptr, arguments..., variables..., temporaries...]. The locals are stored as Option<Value>s. None represents a local that is currently dead, while a live local can either directly contain PrimVal or refer to some part of an Allocation.

Before being initialized, arguments are Value::ByVal(PrimVal::Undef) and other locals are None.

block: BasicBlock

🔬 This is a nightly-only experimental API. (rustc_private)

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The block that is currently executed (or will be executed after the above call stacks return).

stmt: usize

🔬 This is a nightly-only experimental API. (rustc_private)

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The index of the currently evaluated statement.

Methods

impl<'mir, 'tcx> Frame<'mir, 'tcx>

pub fn get_local(&self, local: Local) -> EvalResult<'tcx, Value>

🔬 This is a nightly-only experimental API. (rustc_private)

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pub fn storage_live(&mut self, local: Local) -> Option<Value>

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pub fn storage_dead(&mut self, local: Local) -> Option<Value>

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Returns the old value of the local

Trait Implementations