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//
// XslIf.cs
//
// Authors:
// Ben Maurer (bmaurer@users.sourceforge.net)
// Atsushi Enomoto (ginga@kit.hi-ho.ne.jp)
//
// (C) 2003 Ben Maurer
// (C) 2003 Atsushi Enomoto
//
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.Collections;
using System.Xml;
using System.Xml.XPath;
using System.Xml.Xsl;
namespace Mono.Xml.Xsl.Operations {
// also applicable to xsl:when
internal class XslIf : XslCompiledElement {
CompiledExpression test;
XslOperation children;
public XslIf (Compiler c) : base (c) {}
protected override void Compile (Compiler c)
{
if (c.Debugger != null)
c.Debugger.DebugCompile (c.Input);
c.CheckExtraAttributes ("if", "test");
c.AssertAttribute ("test");
test = c.CompileExpression (c.GetAttribute ("test"));
if (!c.Input.MoveToFirstChild ()) return;
children = c.CompileTemplateContent ();
c.Input.MoveToParent ();
}
public bool EvaluateIfTrue (XslTransformProcessor p)
{
if (p.EvaluateBoolean (test)) {
if (children != null)
children.Evaluate (p);
return true;
}
return false;
}
public override void Evaluate (XslTransformProcessor p)
{
if (p.Debugger != null)
p.Debugger.DebugExecute (p, this.DebugInput);
EvaluateIfTrue (p);
}
}
}
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