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use build::{BlockAnd, Builder};
use hair::*;
use rustc::mir::*;
pub trait EvalInto<'tcx> {
fn eval_into<'a, 'gcx>(self,
builder: &mut Builder<'a, 'gcx, 'tcx>,
destination: &Lvalue<'tcx>,
block: BasicBlock)
-> BlockAnd<()>;
}
impl<'a, 'gcx, 'tcx> Builder<'a, 'gcx, 'tcx> {
pub fn into<E>(&mut self,
destination: &Lvalue<'tcx>,
block: BasicBlock,
expr: E)
-> BlockAnd<()>
where E: EvalInto<'tcx>
{
expr.eval_into(self, destination, block)
}
}
impl<'tcx> EvalInto<'tcx> for ExprRef<'tcx> {
fn eval_into<'a, 'gcx>(self,
builder: &mut Builder<'a, 'gcx, 'tcx>,
destination: &Lvalue<'tcx>,
block: BasicBlock)
-> BlockAnd<()> {
let expr = builder.hir.mirror(self);
builder.into_expr(destination, block, expr)
}
}
impl<'tcx> EvalInto<'tcx> for Expr<'tcx> {
fn eval_into<'a, 'gcx>(self,
builder: &mut Builder<'a, 'gcx, 'tcx>,
destination: &Lvalue<'tcx>,
block: BasicBlock)
-> BlockAnd<()> {
builder.into_expr(destination, block, self)
}
}