CompiledAction.cs source code in C# .NET

Source code for the .NET framework in C#

                        

Code:

/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / XmlUtils / System / Xml / Xsl / XsltOld / CompiledAction.cs / 1305376 / CompiledAction.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 abstract class CompiledAction : Action {
        internal abstract void Compile(Compiler compiler); 
 
        internal virtual bool CompileAttribute(Compiler compiler) {
            return false; 
        }

        public void CompileAttributes(Compiler compiler) {
            NavigatorInput input   = compiler.Input; 
            string         element = input.LocalName;
 
            if (input.MoveToFirstAttribute()) { 
                do {
                    if (input.NamespaceURI.Length != 0) continue; 

                    try {
                        if (CompileAttribute(compiler) == false) {
                            throw XsltException.Create(Res.Xslt_InvalidAttribute, input.LocalName, element); 
                        }
                    }catch { 
                        if (! compiler.ForwardCompatibility) { 
                            throw;
                        } 
                        else {
                            // In ForwardCompatibility mode we ignoreing all unknown or incorrect attributes
                            // If it's mandatory attribute we'l notice it absents later.
                        } 
                    }
                } 
                while (input.MoveToNextAttribute()); 
                input.ToParent();
            } 
        }

        // For perf reason we precalculating AVTs at compile time.
        // If we can do this we set original AVT to null 
        internal static string PrecalculateAvt(ref Avt avt) {
            string result = null; 
            if(avt != null && avt.IsConstant) { 
                result = avt.Evaluate(null, null);
                avt = null; 
            }
            return result;
        }
 
        public void CheckEmpty(Compiler compiler) {
            // Really EMPTY means no content at all, but the sake of compatibility with MSXML we allow whitespaces 
            string elementName = compiler.Input.Name; 
            if (compiler.Recurse()) {
                do { 
                    // Note:  will be reported as XPathNodeType.Text
                    XPathNodeType nodeType = compiler.Input.NodeType;
                    if (
                        nodeType != XPathNodeType.Whitespace            && 
                        nodeType != XPathNodeType.Comment               &&
                        nodeType != XPathNodeType.ProcessingInstruction 
                    ) { 
                        throw XsltException.Create(Res.Xslt_NotEmptyContents, elementName);
                    } 
                }
                while (compiler.Advance());
                compiler.ToParent();
            } 
        }
 
        public void CheckRequiredAttribute(Compiler compiler, object attrValue, string attrName) { 
            CheckRequiredAttribute(compiler, attrValue != null, attrName);
        } 

        public void CheckRequiredAttribute(Compiler compiler, bool attr, string attrName) {
            if (! attr) {
                throw XsltException.Create(Res.Xslt_MissingAttribute, attrName); 
            }
        } 
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
                        

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