Struct rustc_mir::interpret::Frame

pub struct Frame<'tcx> {
    pub mir: &'tcx Mir<'tcx>,
    pub instance: Instance<'tcx>,
    pub span: Span,
    pub return_to_block: StackPopCleanup,
    pub return_place: Place,
    pub locals: Vec<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: &'tcx Mir<'tcx>

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

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The MIR for the function called on this frame.

instance: Instance<'tcx>

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

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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: Vec<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 [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 statment.

Methods

impl<'tcx> Frame<'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) -> EvalResult<'tcx, Option<Value>>

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

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

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

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Returns the old value of the local