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use rustc::mir::interpret::{AllocId, EvalResult, Scalar, Pointer, AccessKind, GlobalId};
use super::{EvalContext, Place, ValTy, Memory};
use rustc::mir;
use rustc::ty::{self, Ty};
use rustc::ty::layout::Size;
use syntax::codemap::Span;
use syntax::ast::Mutability;
pub trait Machine<'mir, 'tcx>: Sized {
type MemoryData;
type MemoryKinds: ::std::fmt::Debug + PartialEq + Copy + Clone;
fn eval_fn_call<'a>(
ecx: &mut EvalContext<'a, 'mir, 'tcx, Self>,
instance: ty::Instance<'tcx>,
destination: Option<(Place, mir::BasicBlock)>,
args: &[ValTy<'tcx>],
span: Span,
sig: ty::FnSig<'tcx>,
) -> EvalResult<'tcx, bool>;
fn call_intrinsic<'a>(
ecx: &mut EvalContext<'a, 'mir, 'tcx, Self>,
instance: ty::Instance<'tcx>,
args: &[ValTy<'tcx>],
dest: Place,
dest_layout: ty::layout::TyLayout<'tcx>,
target: mir::BasicBlock,
) -> EvalResult<'tcx>;
fn try_ptr_op<'a>(
ecx: &EvalContext<'a, 'mir, 'tcx, Self>,
bin_op: mir::BinOp,
left: Scalar,
left_ty: Ty<'tcx>,
right: Scalar,
right_ty: Ty<'tcx>,
) -> EvalResult<'tcx, Option<(Scalar, bool)>>;
fn mark_static_initialized<'a>(
_mem: &mut Memory<'a, 'mir, 'tcx, Self>,
_id: AllocId,
_mutability: Mutability,
) -> EvalResult<'tcx, bool>;
fn init_static<'a>(
ecx: &mut EvalContext<'a, 'mir, 'tcx, Self>,
cid: GlobalId<'tcx>,
) -> EvalResult<'tcx, AllocId>;
fn box_alloc<'a>(
ecx: &mut EvalContext<'a, 'mir, 'tcx, Self>,
ty: Ty<'tcx>,
dest: Place,
) -> EvalResult<'tcx>;
fn global_item_with_linkage<'a>(
ecx: &mut EvalContext<'a, 'mir, 'tcx, Self>,
instance: ty::Instance<'tcx>,
mutability: Mutability,
) -> EvalResult<'tcx>;
fn check_locks<'a>(
_mem: &Memory<'a, 'mir, 'tcx, Self>,
_ptr: Pointer,
_size: Size,
_access: AccessKind,
) -> EvalResult<'tcx> {
Ok(())
}
fn add_lock<'a>(
_mem: &mut Memory<'a, 'mir, 'tcx, Self>,
_id: AllocId,
) {}
fn free_lock<'a>(
_mem: &mut Memory<'a, 'mir, 'tcx, Self>,
_id: AllocId,
_len: u64,
) -> EvalResult<'tcx> {
Ok(())
}
fn end_region<'a>(
_ecx: &mut EvalContext<'a, 'mir, 'tcx, Self>,
_reg: Option<::rustc::middle::region::Scope>,
) -> EvalResult<'tcx> {
Ok(())
}
fn validation_op<'a>(
_ecx: &mut EvalContext<'a, 'mir, 'tcx, Self>,
_op: ::rustc::mir::ValidationOp,
_operand: &::rustc::mir::ValidationOperand<'tcx, ::rustc::mir::Place<'tcx>>,
) -> EvalResult<'tcx> {
Ok(())
}
}