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external/cecil-legacy/symbols/pdb/Mono.Cecil.Pdb/PdbWriter.cs
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external/cecil-legacy/symbols/pdb/Mono.Cecil.Pdb/PdbWriter.cs
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//
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// PdbWriter.cs
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//
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// Author:
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// Jb Evain (jbevain@gmail.com)
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//
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// Copyright (c) 2008 - 2011 Jb Evain
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System;
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using System.Collections.Generic;
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using System.Diagnostics.SymbolStore;
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using Mono.Cecil.Cil;
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using Mono.Collections.Generic;
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#if !READ_ONLY
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namespace Mono.Cecil.Pdb {
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public class PdbWriter : Cil.ISymbolWriter {
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readonly ModuleDefinition module;
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readonly SymWriter writer;
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readonly Dictionary<string, SymDocumentWriter> documents;
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internal PdbWriter (ModuleDefinition module, SymWriter writer)
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{
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this.module = module;
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this.writer = writer;
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this.documents = new Dictionary<string, SymDocumentWriter> ();
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}
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public bool GetDebugHeader (out ImageDebugDirectory directory, out byte [] header)
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{
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header = writer.GetDebugInfo (out directory);
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return true;
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}
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public void Write (MethodBody body)
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{
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var method_token = body.Method.MetadataToken;
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var sym_token = new SymbolToken (method_token.ToInt32 ());
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var instructions = CollectInstructions (body);
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if (instructions.Count == 0)
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return;
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var start_offset = 0;
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var end_offset = body.CodeSize;
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writer.OpenMethod (sym_token);
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writer.OpenScope (start_offset);
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DefineSequencePoints (instructions);
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DefineVariables (body, start_offset, end_offset);
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writer.CloseScope (end_offset);
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writer.CloseMethod ();
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}
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Collection<Instruction> CollectInstructions (MethodBody body)
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{
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var collection = new Collection<Instruction> ();
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var instructions = body.Instructions;
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for (int i = 0; i < instructions.Count; i++) {
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var instruction = instructions [i];
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var sequence_point = instruction.SequencePoint;
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if (sequence_point == null)
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continue;
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GetDocument (sequence_point.Document);
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collection.Add (instruction);
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}
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return collection;
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}
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void DefineVariables (MethodBody body, int start_offset, int end_offset)
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{
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if (!body.HasVariables)
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return;
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var sym_token = new SymbolToken (body.LocalVarToken.ToInt32 ());
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var variables = body.Variables;
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for (int i = 0; i < variables.Count; i++) {
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var variable = variables [i];
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CreateLocalVariable (variable, sym_token, start_offset, end_offset);
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}
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}
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void DefineSequencePoints (Collection<Instruction> instructions)
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{
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for (int i = 0; i < instructions.Count; i++) {
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var instruction = instructions [i];
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var sequence_point = instruction.SequencePoint;
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writer.DefineSequencePoints (
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GetDocument (sequence_point.Document),
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new [] { instruction.Offset },
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new [] { sequence_point.StartLine },
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new [] { sequence_point.StartColumn },
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new [] { sequence_point.EndLine },
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new [] { sequence_point.EndColumn });
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}
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}
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void CreateLocalVariable (VariableDefinition variable, SymbolToken local_var_token, int start_offset, int end_offset)
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{
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writer.DefineLocalVariable2 (
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variable.Name,
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0,
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local_var_token,
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SymAddressKind.ILOffset,
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variable.Index,
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0,
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0,
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start_offset,
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end_offset);
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}
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SymDocumentWriter GetDocument (Document document)
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{
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if (document == null)
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return null;
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SymDocumentWriter doc_writer;
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if (documents.TryGetValue (document.Url, out doc_writer))
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return doc_writer;
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doc_writer = writer.DefineDocument (
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document.Url,
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document.Language.ToGuid (),
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document.LanguageVendor.ToGuid (),
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document.Type.ToGuid ());
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documents [document.Url] = doc_writer;
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return doc_writer;
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}
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public void Write (MethodSymbols symbols)
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{
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var sym_token = new SymbolToken (symbols.MethodToken.ToInt32 ());
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var start_offset = 0;
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var end_offset = symbols.CodeSize;
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writer.OpenMethod (sym_token);
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writer.OpenScope (start_offset);
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DefineSequencePoints (symbols);
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DefineVariables (symbols, start_offset, end_offset);
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writer.CloseScope (end_offset);
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writer.CloseMethod ();
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}
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void DefineSequencePoints (MethodSymbols symbols)
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{
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var instructions = symbols.instructions;
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for (int i = 0; i < instructions.Count; i++) {
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var instruction = instructions [i];
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var sequence_point = instruction.SequencePoint;
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writer.DefineSequencePoints (
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GetDocument (sequence_point.Document),
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new [] { instruction.Offset },
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new [] { sequence_point.StartLine },
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new [] { sequence_point.StartColumn },
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new [] { sequence_point.EndLine },
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new [] { sequence_point.EndColumn });
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}
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}
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void DefineVariables (MethodSymbols symbols, int start_offset, int end_offset)
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{
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if (!symbols.HasVariables)
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return;
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var sym_token = new SymbolToken (symbols.LocalVarToken.ToInt32 ());
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var variables = symbols.Variables;
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for (int i = 0; i < variables.Count; i++) {
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var variable = variables [i];
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CreateLocalVariable (variable, sym_token, start_offset, end_offset);
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}
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}
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public void Dispose ()
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{
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var entry_point = module.EntryPoint;
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if (entry_point != null)
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writer.SetUserEntryPoint (new SymbolToken (entry_point.MetadataToken.ToInt32 ()));
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writer.Close ();
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}
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}
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}
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#endif
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