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/* ****************************************************************************
*
* Copyright (c) Microsoft Corporation.
*
* This source code is subject to terms and conditions of the Apache License, Version 2.0. A
* copy of the license can be found in the License.html file at the root of this distribution. If
* you cannot locate the Apache License, Version 2.0, please send an email to
* dlr@microsoft.com. By using this source code in any fashion, you are agreeing to be bound
* by the terms of the Apache License, Version 2.0.
*
* You must not remove this notice, or any other, from this software.
*
*
* ***************************************************************************/
#if FEATURE_REFEMIT && FEATURE_PDBEMIT
#if !FEATURE_CORE_DLR
using Microsoft.Scripting.Ast;
using Microsoft.Scripting.Ast.Compiler;
#else
using System.Linq.Expressions;
using System.Linq.Expressions.Compiler;
#endif
using System.Collections.Generic;
using System.Diagnostics;
using System.Diagnostics.SymbolStore;
using System.Reflection;
using System.Reflection.Emit;
namespace System.Runtime.CompilerServices {
#if !FEATURE_CORE_DLR || SILVERLIGHT
using ILGenerator = OffsetTrackingILGenerator;
#endif
/// <summary>
/// Generator of PDB debugging information for expression trees.
/// </summary>
internal sealed class SymbolDocumentGenerator : DebugInfoGenerator {
private Dictionary<SymbolDocumentInfo, ISymbolDocumentWriter> _symbolWriters;
private ISymbolDocumentWriter GetSymbolWriter(MethodBuilder method, SymbolDocumentInfo document) {
ISymbolDocumentWriter result;
if (_symbolWriters == null) {
_symbolWriters = new Dictionary<SymbolDocumentInfo, ISymbolDocumentWriter>();
}
if (!_symbolWriters.TryGetValue(document, out result)) {
result = ((ModuleBuilder)method.Module).DefineDocument(document.FileName, document.Language, document.LanguageVendor, SymbolGuids.DocumentType_Text);
_symbolWriters.Add(document, result);
}
return result;
}
internal override void MarkSequencePoint(LambdaExpression method, MethodBase methodBase, ILGenerator ilg, DebugInfoExpression sequencePoint) {
MethodBuilder builder = methodBase as MethodBuilder;
if (builder != null) {
ilg.MarkSequencePoint(GetSymbolWriter(builder, sequencePoint.Document), sequencePoint.StartLine, sequencePoint.StartColumn, sequencePoint.EndLine, sequencePoint.EndColumn);
}
}
public override void MarkSequencePoint(LambdaExpression method, int ilOffset, DebugInfoExpression sequencePoint) {
throw Error.PdbGeneratorNeedsExpressionCompiler();
}
internal override void SetLocalName(LocalBuilder localBuilder, string name) {
localBuilder.SetLocalSymInfo(name);
}
}
}
#endif
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