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// Copyright (c) 2009-2013 AlphaSierraPapa for the SharpDevelop Team
//
// 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.Generic;
using System.Diagnostics;
using System.Linq;
using System.Threading;
using System.Xml.Linq;
using ICSharpCode.NRefactory.Editor;
using ICSharpCode.NRefactory.Utils;
namespace ICSharpCode.NRefactory.Xml
{
/// <summary>
/// XML parser that is error tolerant.
/// </summary>
public class AXmlParser
{
/// <summary>
/// Generate syntax error when seeing entity reference other then the built-in ones
/// </summary>
public bool UnknownEntityReferenceIsError { get; set; }
IList<AXmlObject> CreatePublic(IList<InternalObject> internalObjects)
{
var publicObjects = new AXmlObject[internalObjects.Count];
int pos = 0;
for (int i = 0; i < internalObjects.Count; i++) {
publicObjects[i] = internalObjects[i].CreatePublicObject(null, pos);
pos += internalObjects[i].Length;
}
return Array.AsReadOnly(publicObjects);
}
/// <summary>
/// Parses a document into a flat list of tags.
/// </summary>
/// <returns>Parsed tag soup.</returns>
public IList<AXmlObject> ParseTagSoup(ITextSource textSource,
CancellationToken cancellationToken = default(CancellationToken))
{
if (textSource == null)
throw new ArgumentNullException("textSource");
var reader = new TagReader(this, textSource, false);
var internalObjects = reader.ReadAllObjects(cancellationToken);
return CreatePublic(internalObjects);
}
/// <summary>
/// Parses a document incrementally into a flat list of tags.
/// </summary>
/// <param name="oldParserState">The parser state from a previous call to ParseIncremental(). Use null for the first call.</param>
/// <param name="newTextSource">The text source for the new document version.</param>
/// <param name="newParserState">Out: the new parser state, pass this to the next ParseIncremental() call.</param>
/// <param name="cancellationToken">Optional: cancellation token.</param>
/// <returns>Parsed tag soup.</returns>
public IList<AXmlObject> ParseTagSoupIncremental(
IncrementalParserState oldParserState, ITextSource newTextSource, out IncrementalParserState newParserState,
CancellationToken cancellationToken = default(CancellationToken))
{
if (newTextSource == null)
throw new ArgumentNullException("newTextSource");
var internalObjects = InternalParseIncremental(oldParserState, newTextSource, out newParserState, false, cancellationToken);
return CreatePublic(internalObjects);
}
List<InternalObject> InternalParseIncremental(
IncrementalParserState oldParserState, ITextSource newTextSource, out IncrementalParserState newParserState,
bool collapseProperlyNestedElements, CancellationToken cancellationToken)
{
var reader = new TagReader(this, newTextSource, collapseProperlyNestedElements);
ITextSourceVersion newVersion = newTextSource.Version;
var reuseMap = oldParserState != null ? oldParserState.GetReuseMapTo(newVersion) : null;
List<InternalObject> internalObjects;
if (reuseMap != null)
internalObjects = reader.ReadAllObjectsIncremental(oldParserState.Objects, reuseMap, cancellationToken);
else
internalObjects = reader.ReadAllObjects(cancellationToken);
if (newVersion != null)
newParserState = new IncrementalParserState(newTextSource.TextLength, newVersion, internalObjects.ToArray());
else
newParserState = null;
return internalObjects;
}
/// <summary>
/// Parses a document.
/// </summary>
public AXmlDocument Parse(ITextSource textSource, CancellationToken cancellationToken = default(CancellationToken))
{
if (textSource == null)
throw new ArgumentNullException("textSource");
var reader = new TagReader(this, textSource, true);
var internalObjects = reader.ReadAllObjects(cancellationToken);
var heuristic = new TagMatchingHeuristics(textSource);
return new AXmlDocument(null, 0, heuristic.CreateDocument(internalObjects, cancellationToken));
}
/// <summary>
/// Parses a document incrementally into a flat list of tags.
/// </summary>
/// <param name="oldParserState">The parser state from a previous call to ParseIncremental(). Use null for the first call.</param>
/// <param name="newTextSource">The text source for the new document version.</param>
/// <param name="newParserState">Out: the new parser state, pass this to the next ParseIncremental() call.</param>
/// <param name="cancellationToken">Optional: cancellation token.</param>
/// <returns>Parsed tag soup.</returns>
public AXmlDocument ParseIncremental(
IncrementalParserState oldParserState, ITextSource newTextSource, out IncrementalParserState newParserState,
CancellationToken cancellationToken = default(CancellationToken))
{
if (newTextSource == null)
throw new ArgumentNullException("newTextSource");
var internalObjects = InternalParseIncremental(oldParserState, newTextSource, out newParserState, true, cancellationToken);
var heuristic = new TagMatchingHeuristics(newTextSource);
return new AXmlDocument(null, 0, heuristic.CreateDocument(internalObjects, cancellationToken));
}
}
}
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