34 lines
1.0 KiB
Rust
34 lines
1.0 KiB
Rust
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//! This module contains everything needed to instantiate an interpreter.
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//! This separation exists to ensure that no fancy miri features like
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//! interpreting common C functions leak into CTFE.
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use super::{
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EvalResult,
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EvalContext,
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Lvalue,
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};
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use rustc::{mir, ty};
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/// Methods of this trait signifies a point where CTFE evaluation would fail
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/// and some use case dependent behaviour can instead be applied
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pub trait Machine<'tcx>: Sized {
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/// Additional data that can be accessed via the EvalContext
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type Data;
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/// Additional data that can be accessed via the Memory
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type MemoryData;
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/// Called when a function's MIR is not found.
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/// This will happen for `extern "C"` functions.
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fn call_missing_fn<'a>(
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ecx: &mut EvalContext<'a, 'tcx, Self>,
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instance: ty::Instance<'tcx>,
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destination: Option<(Lvalue<'tcx>, mir::BasicBlock)>,
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arg_operands: &[mir::Operand<'tcx>],
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sig: ty::FnSig<'tcx>,
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path: String,
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) -> EvalResult<'tcx>;
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}
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