Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / XmlUtils / System / Xml / Xsl / XsltOld / IfAction.cs / 1305376 / IfAction.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //----------------------------------------------------------------------------- namespace System.Xml.Xsl.XsltOld { using Res = System.Xml.Utils.Res; using System; using System.Diagnostics; using System.Xml; using System.Xml.XPath; internal class IfAction : ContainerAction { internal enum ConditionType { ConditionIf, ConditionWhen, ConditionOtherwise } private ConditionType type; private int testKey = Compiler.InvalidQueryKey; internal IfAction(ConditionType type) { this.type = type; } internal override void Compile(Compiler compiler) { CompileAttributes(compiler); if (this.type != ConditionType.ConditionOtherwise) { CheckRequiredAttribute(compiler, this.testKey != Compiler.InvalidQueryKey, "test"); } if (compiler.Recurse()) { CompileTemplate(compiler); compiler.ToParent(); } } internal override bool CompileAttribute(Compiler compiler) { string name = compiler.Input.LocalName; string value = compiler.Input.Value; if (Ref.Equal(name, compiler.Atoms.Test)) { if (this.type == ConditionType.ConditionOtherwise) { return false; } this.testKey = compiler.AddBooleanQuery(value); } else { return false; } return true; } internal override void Execute(Processor processor, ActionFrame frame) { Debug.Assert(processor != null && frame != null); switch (frame.State) { case Initialized: if (this.type == ConditionType.ConditionIf || this.type == ConditionType.ConditionWhen) { Debug.Assert(this.testKey != Compiler.InvalidQueryKey); bool value = processor.EvaluateBoolean(frame, this.testKey); if (value == false) { frame.Finished(); break; } } processor.PushActionFrame(frame); frame.State = ProcessingChildren; break; // Allow children to run case ProcessingChildren: if (this.type == ConditionType.ConditionWhen ||this.type == ConditionType.ConditionOtherwise) { Debug.Assert(frame.Container != null); frame.Exit(); } frame.Finished(); break; default: Debug.Fail("Invalid IfAction execution state"); break; } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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