private static BinaryExpression CreateRelationalOperator(
ExpressionType op,
Expression left,
Expression right)
{
BinaryExpression result;
LinqExpressionNormalizer.TryCreateRelationalOperator(op, left, right, out result);
return(result);
}
internal override Expression VisitBinary(BinaryExpression b)
{
b = (BinaryExpression)base.VisitBinary(b);
if (b.NodeType == ExpressionType.Equal)
{
Expression left = LinqExpressionNormalizer.UnwrapObjectConvert(b.Left);
Expression right = LinqExpressionNormalizer.UnwrapObjectConvert(b.Right);
if (left != b.Left || right != b.Right)
{
b = LinqExpressionNormalizer.CreateRelationalOperator(ExpressionType.Equal, left, right);
}
}
LinqExpressionNormalizer.Pattern pattern;
if (this._patterns.TryGetValue(b.Left, out pattern) && pattern.Kind == LinqExpressionNormalizer.PatternKind.Compare && LinqExpressionNormalizer.IsConstantZero(b.Right))
{
LinqExpressionNormalizer.ComparePattern comparePattern = (LinqExpressionNormalizer.ComparePattern)pattern;
BinaryExpression result;
if (LinqExpressionNormalizer.TryCreateRelationalOperator(b.NodeType, comparePattern.Left, comparePattern.Right, out result))
{
b = result;
}
}
return((Expression)b);
}