//!!! code review
protected void FinishCompare(CodeGen cg)
{
BinaryExpr bright = (BinaryExpr)right;
Slot valTmp = cg.GetLocalTmp(typeof(object));
Slot retTmp = cg.GetLocalTmp(typeof(object));
bright.left.Emit(cg);
cg.Emit(OpCodes.Dup);
valTmp.EmitSet(cg);
cg.EmitCall(op.target.Method);
cg.Emit(OpCodes.Dup);
retTmp.EmitSet(cg);
cg.EmitTestTrue();
Label end = cg.DefineLabel();
cg.Emit(OpCodes.Brfalse, end);
valTmp.EmitGet(cg);
if (IsComparision(bright.right))
{
bright.FinishCompare(cg);
}
else
{
bright.right.Emit(cg);
cg.EmitCall(bright.op.target.Method);
}
retTmp.EmitSet(cg);
cg.MarkLabel(end);
retTmp.EmitGet(cg);
}
public virtual void PostWalk(BinaryExpr node)
{
}
public static bool IsComparision(Expr e)
{
BinaryExpr be = e as BinaryExpr;
return(be != null && be.IsComparision());
}
// BinaryExpr
public virtual bool Walk(BinaryExpr node)
{
return(false);
}