97 lines
3.8 KiB
C#
97 lines
3.8 KiB
C#
//------------------------------------------------------------------------------
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// <copyright file="SourceLineInfo.cs" company="Microsoft">
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// </copyright>
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// <owner current="true" primary="true">Microsoft</owner>
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//------------------------------------------------------------------------------
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using System.Diagnostics;
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namespace System.Xml.Xsl {
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[DebuggerDisplay("({Line},{Pos})")]
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internal struct Location {
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private ulong value;
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public int Line { get { return (int)(this.value >> 32); } }
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public int Pos { get { return (int)(this.value ); } }
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public Location(int line, int pos) {
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this.value = (((ulong)line) << 32) | (uint)pos;
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}
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public Location(Location that) {
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this.value = that.value;
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}
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public bool LessOrEqual(Location that) {
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return this.value <= that.value;
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}
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}
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[DebuggerDisplay("{Uri} [{StartLine},{StartPos} -- {EndLine},{EndPos}]")]
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internal class SourceLineInfo : ISourceLineInfo {
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protected string uriString;
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protected Location start;
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protected Location end;
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public SourceLineInfo(string uriString, int startLine, int startPos, int endLine, int endPos)
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: this(uriString, new Location(startLine, startPos), new Location(endLine, endPos))
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{}
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public SourceLineInfo(string uriString, Location start, Location end) {
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this.uriString = uriString;
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this.start = start;
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this.end = end;
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Validate(this);
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}
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public string Uri { get { return this.uriString ; } }
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public int StartLine { get { return this.start.Line; } }
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public int StartPos { get { return this.start.Pos ; } }
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public int EndLine { get { return this.end.Line ; } }
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public int EndPos { get { return this.end.Pos ; } }
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public Location End { get { return this.end ; } }
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public Location Start { get { return this.start ; } }
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/// <summary>
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/// Magic number 0xfeefee is used in PDB to denote a section of IL that does not map to any user code.
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/// When VS debugger steps into IL marked with 0xfeefee, it will continue the step until it reaches
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/// some user code.
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/// </summary>
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protected const int NoSourceMagicNumber = 0xfeefee;
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public static SourceLineInfo NoSource = new SourceLineInfo(string.Empty, NoSourceMagicNumber, 0, NoSourceMagicNumber, 0);
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public bool IsNoSource {
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get { return this.StartLine == NoSourceMagicNumber; }
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}
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[Conditional("DEBUG")]
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public static void Validate(ISourceLineInfo lineInfo) {
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if (lineInfo.Start.Line == 0 || lineInfo.Start.Line == NoSourceMagicNumber) {
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Debug.Assert(lineInfo.Start.Line == lineInfo.End.Line);
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Debug.Assert(lineInfo.Start.Pos == 0 && lineInfo.End.Pos == 0);
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} else {
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Debug.Assert(0 < lineInfo.Start.Line && 0 < lineInfo.Start.Pos, "0 < start");
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Debug.Assert(0 < lineInfo.End.Line && 0 < lineInfo.End.Pos , "0 < end");
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Debug.Assert(lineInfo.Start.LessOrEqual(lineInfo.End), "start <= end");
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}
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}
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// Returns file path for local and network URIs. Used for PDB generating and error reporting.
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public static string GetFileName(string uriString) {
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Debug.Assert(uriString != null);
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Uri uri;
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if (uriString.Length != 0 &&
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System.Uri.TryCreate(uriString, UriKind.Absolute, out uri) &&
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uri.IsFile
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) {
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return uri.LocalPath;
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}
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return uriString;
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}
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}
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}
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