#region License
/*
* Copyright 2002-2005 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#endregion
using System;
using System.Runtime.Serialization;
using Spring.Expressions.Parser.antlr.collections;
namespace Spring.Expressions{
/// <summary>
/// Represents parsed named argument node in the expression.
/// </summary>
/// <author>Aleksandar Seovic</author>
[Serializable]
public class QualifiedIdentifier : BaseNode
{
private string identifier;
/// <summary>
/// Create a new instance
/// </summary>
public QualifiedIdentifier()
: base()
{
}
/// <summary>
/// Create a new instance from SerializationInfo
/// </summary>
protected QualifiedIdentifier(SerializationInfo info, StreamingContext context)
: base(info, context)
{
}
/// <summary>
/// Returns the value of the named argument defined by this node.
/// </summary>
/// <param name="context">Context to evaluate expressions against.</param>
/// <param name="evalContext">Current expression evaluation context.</param>
/// <returns>Node's value.</returns>
protected override object Get(object context, EvaluationContext evalContext)
{
if (identifier == null)
{
lock (this)
{
if (identifier == null)
{
identifier = this.getText();
}
}
}
return identifier;
}
/// <summary>
/// Overrides getText to allow easy way to get fully
/// qualified identifier.
/// </summary>
/// <returns>
/// Fully qualified identifier as a string.
/// </returns>
public override string getText()
{
string tmp = base.getText();
// if (tmp != null)
// {
// tmp = tmp.Replace(ESCAPE_CHAR, ""); // remove all occurrences of escape char
// }
AST node = this.getFirstChild();
while (node != null)
{
tmp = string.Concat(tmp, node.getText());
node = node.getNextSibling();
}
return tmp;
}
}
}
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