/// <summary>
/// Create a parameter expression
/// </summary>
public override Expression ToExpression()
{
if (this.m_expression != null)
{
return(this.m_expression);
}
if (this.Type == null)
{
throw new InvalidOperationException("Type not set");
}
// Is there some parameter in the parent context?
XmlExpression xe = this.Parent;
while (xe != null && this.m_expression == null)
{
this.m_expression = (xe as XmlLambdaExpression)?.Parameters.Find(o => o.ParameterName == this.ParameterName)?.ToExpression() as ParameterExpression;
xe = xe.Parent;
}
if (this.m_expression == null)
{
this.m_expression = Expression.Parameter(this.Type, this.ParameterName);
}
return(this.m_expression);
}
/// <summary>
/// Initialize context
/// </summary>
public virtual void InitializeContext(XmlExpression context)
{
foreach (var itm in this.Item)
{
itm.InitializeContext(context);
}
}
/// <summary>
/// Initialize context
/// </summary>
public override void InitializeContext(XmlExpression context)
{
base.InitializeContext(context);
foreach (var itm in this.Parts)
{
itm.InitializeContext(this);
}
}
/// <summary>
/// Creates an XmlBinaryExpression from the specified binary expression
/// </summary>
public XmlBinaryExpression(BinaryExpression expr)
{
BinaryOperatorType opType = BinaryOperatorType.AndAlso;
if (!Enum.TryParse <BinaryOperatorType>(expr.NodeType.ToString(), out opType))
{
throw new ArgumentOutOfRangeException(nameof(Expression.NodeType));
}
this.Operator = opType;
this.Parts = new List <XmlExpression>()
{
XmlExpression.FromExpression(expr.Left),
XmlExpression.FromExpression(expr.Right)
};
}
/// <summary>
/// Initialize context
/// </summary>
public override void InitializeContext(XmlExpression context)
{
base.InitializeContext(context);
this.Parameters.InitializeContext(this);
}
/// <summary>
/// Initialize context
/// </summary>
public override void InitializeContext(XmlExpression context)
{
base.InitializeContext(context);
//foreach (var itm in this.Parameters)
// itm.InitializeContext(this);
}
/// <summary>
/// Creates a new xml expression list
/// </summary>
public XmlExpressionList(IEnumerable <Expression> expr)
{
this.Item = new List <XmlExpression>(expr.Select(o => XmlExpression.FromExpression(o)));
}
/// <summary>
/// Creates the bound expression
/// </summary>
public XmlBoundExpression(MethodCallExpression expr)
{
this.Object = XmlExpression.FromExpression(expr.Object);
}
/// <summary>
/// Creates the bound expression
/// </summary>
public XmlBoundExpression(UnaryExpression expr)
{
this.Object = XmlExpression.FromExpression(expr.Operand);
}
/// <summary>
/// Creates the bound expression
/// </summary>
public XmlBoundExpression(MemberExpression expr)
{
this.Object = XmlExpression.FromExpression(expr.Expression);
}
/// <summary>
/// Creates type bound expression
/// </summary>
/// <param name="expr"></param>
public XmlBoundExpression(TypeBinaryExpression expr)
{
this.Object = XmlExpression.FromExpression(expr.Expression);
}
/// <summary>
/// Creates the bound expression
/// </summary>
public XmlBoundExpression(Expression expr)
{
this.Object = XmlExpression.FromExpression(expr);
}
/// <summary>
/// Initialize context
/// </summary>
public override void InitializeContext(XmlExpression context)
{
base.InitializeContext(context);
this.Object?.InitializeContext(this);
}
/// <summary>
/// Initialize the context
/// </summary>
public virtual void InitializeContext(XmlExpression context)
{
this.Parent = context;
}