static void _Patch(CodeBinaryOperatorExpression op, CodeDomVisitContext ctx, CodeDomResolver resolver)
{
if (null != op)
{
//var rf = op.Left as CodeFieldReferenceExpression;
//if (null != rf && rf.FieldName == "Reduce")
// System.Diagnostics.Debugger.Break();
var scope = resolver.GetScope(op);
if (CodeBinaryOperatorType.IdentityEquality == op.Operator)
{
if (_HasUnresolved(op.Left))
{
return;
}
//var vop = op.Right as CodeVariableReferenceExpression;
//if (null != vop && vop.VariableName == "n")
// System.Diagnostics.Debugger.Break();
var tr1 = resolver.GetTypeOfExpression(op.Left);
if (resolver.IsValueType(tr1))
{
if (_HasUnresolved(op.Right))
{
return;
}
var tr2 = resolver.GetTypeOfExpression(op.Right);
if (resolver.IsValueType(tr2))
{
var op2 = new CodeBinaryOperatorExpression(op.Left, CodeBinaryOperatorType.ValueEquality, op.Right);
CodeDomVisitor.ReplaceTarget(ctx, op2);
return;
}
}
op.UserData.Remove("slang:unresolved");
}
else if (CodeBinaryOperatorType.IdentityInequality == op.Operator)
{
if (_HasUnresolved(op.Left))
{
return;
}
var tr1 = resolver.GetTypeOfExpression(op.Left);
if (resolver.IsValueType(tr1))
{
if (_HasUnresolved(op.Right))
{
return;
}
var tr2 = resolver.GetTypeOfExpression(op.Right);
if (resolver.IsValueType(tr2))
{
// we have to hack the codedom because there is no value inequality
op.Operator = CodeBinaryOperatorType.ValueEquality;
var newOp = new CodeBinaryOperatorExpression(new CodePrimitiveExpression(false), CodeBinaryOperatorType.ValueEquality, op);
CodeDomVisitor.ReplaceTarget(ctx, newOp);
}
}
op.UserData.Remove("slang:unresolved");
}
}
}