First round of dead file removal

experimental/visual_studio_plugin/src/NaClVsx.Package/DebugSupport/DWARF/DwarfReaderImpl.cs

Index: experimental/visual_studio_plugin/src/NaClVsx.Package/DebugSupport/DWARF/DwarfReaderImpl.cs
diff --git a/experimental/visual_studio_plugin/src/NaClVsx.Package/DebugSupport/DWARF/DwarfReaderImpl.cs b/experimental/visual_studio_plugin/src/NaClVsx.Package/DebugSupport/DWARF/DwarfReaderImpl.cs
deleted file mode 100644
index 44f777674d7ac37363a8d052c394874dd0124121..0000000000000000000000000000000000000000
--- a/experimental/visual_studio_plugin/src/NaClVsx.Package/DebugSupport/DWARF/DwarfReaderImpl.cs
+++ /dev/null
@@ -1,292 +0,0 @@
-// Copyright (c) 2011 The Native Client Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#region
-
-using System;
-using System.Collections.Generic;
-using System.Diagnostics;
-using NaClVsx;
-
-#endregion
-
-namespace Google.NaClVsx.DebugSupport.DWARF {
-  /// <summary>
-  ///   The interface implemented by this class lives in
-  ///   NaClVsx.DebugHelpers/DwarfParser.h
-  /// </summary>
-  class DwarfReaderImpl : IDwarfReader {
-    public DwarfReaderImpl(SymbolDatabase db) {
-      db_ = db;
-    }
-
-    #region Implementation of IDwarfReader
-
-    public void StartCompilationUnit() {
-      // File and directory ids are unique only within a compilation unit.
-      dirs_.Clear();
-      compilationUnitIndex_++;
-    }
-
-    public void EndCompilationUnit() {}
-
-    public void StartDIE(ulong parent, ulong offset, DwarfTag tag) {
-      var entry =
-          new DebugInfoEntry {
-              Key = offset,
-              OuterScope = scopeStack_.PeekOrDefault(),
-              ParentKey = parent,
-              Tag = tag
-          };
-
-      db_.Entries[offset] = entry;
-    }
-
-    public void EndDIE(ulong offset) {
-      var entry = db_.Entries[offset];
-
-      // If this DIE is a scope, it should at this point be at the top of the
-      // scope stack.
-      if (scopeStack_.PeekOrDefault() == entry) {
-        scopeStack_.Pop();
-
-        // Add a transition back to the parent scope. This may get overwritten
-        // if a sibling scope starts where this one ends, but that's cool.
-        //
-        // Note: we can only do this if the scope has a high pc value. Labels
-        // don't.
-        object highpc;
-        if (entry.Attributes.TryGetValue(
-            DwarfAttribute.DW_AT_high_pc, out highpc)) {
-          if (db_.ScopeTransitions.ContainsKey((ulong) highpc)) {
-            // This can happen if a parent and child scope end on the same pc
-            // value.  The parent wins, so overwrite the previous entry.
-            db_.ScopeTransitions[(ulong) highpc].Entry = entry.OuterScope;
-          } else {
-            db_.ScopeTransitions.Add(
-                (ulong) highpc,
-                new SymbolDatabase.ScopeTransition {
-                    Address = (ulong) highpc,
-                    Entry = entry.OuterScope
-                });
-          }
-        }
-      }
-    }
-
-    public void ProcessAttribute(ulong offset,
-                                 ulong parent,
-                                 DwarfAttribute attr,
-                                 object data) {
-      var entry = db_.Entries[offset];
-
-      var key = attributeIndex_++;
-      db_.Attributes.Add(
-          key,
-          new SymbolDatabase.DebugInfoAttribute {
-              Key = key,
-              ParentKey = parent,
-              Tag = attr,
-              Value = data
-          });
-      entry.Attributes.Add(attr, data);
-
-
-      // If we have a PC range, it's time to make a new scope
-      if (attr == DwarfAttribute.DW_AT_low_pc) {
-        var addr = (ulong) data;
-
-        // Add a scope transition for this entry.
-        // Replace any existing scope transition at the point where  
-        // this entry starts. Existing transitions are expected--it 
-        // just means that this entry starts where its sibling ends.
-        if (db_.ScopeTransitions.ContainsKey(addr)) {
-          db_.ScopeTransitions[addr].Entry = entry;
-        } else {
-          db_.ScopeTransitions.Add(
-              addr,
-              new SymbolDatabase.ScopeTransition {
-                  Address = addr,
-                  Entry = entry
-              });
-        }
-        // This entry may already be on the scope track if it has low_pc and
-        // ranges.
-        if (scopeStack_.PeekOrDefault() != entry) {
-          scopeStack_.Push(db_.Entries[parent]);
-        }
-      } else if (attr == DwarfAttribute.DW_AT_ranges) {
-        // We can't make the scope transition because ranges are parsed on a
-        // different code path, so we'll handle it during a post-processing
-        // step.
-        // This entry may already be on the scope track if it has low_pc as
-        // well as ranges.
-        if (scopeStack_.PeekOrDefault() != entry) {
-          scopeStack_.Push(db_.Entries[parent]);
-        }
-      }
-    }
-
-    public void DefineDir(string name, uint dirNum) {
-      try {
-        dirs_[dirNum] = name;
-      }
-      catch (Exception e) {
-        Debug.WriteLine(e.Message);
-      }
-    }
-
-    public void DefineFile(string name,
-                           int fileNum,
-                           uint dirNum) {
-      var key = MakeFileKey((uint) fileNum);
-      string relpath;
-      if (!dirs_.TryGetValue(dirNum, out relpath)) {
-        relpath = "";
-      }
-      db_.Files.Add(
-          key,
-          new SymbolDatabase.SourceFile {
-              Key = key,
-              Filename = name,
-              RelativePath = relpath,
-              CurrentAbsolutePath = name
-          });
-    }
-
-    public void AddLine(ulong address,
-                        ulong length,
-                        uint fileNum,
-                        uint lineNum,
-                        uint columnNum) {
-      //
-      // There are several cases in the C++ standard library where a line entry
-      // has zero length. This appears to happen when a line of code is
-      // elided for whatever reason. The problem is that the address might be
-      // perfectly valid for a different line of code, which would lead to
-      // duplicate entries in our location table. So if length is zero, bail.
-      //
-      if (length == 0) {
-        return;
-      }
-
-      //
-      // Add the address and location to our locations table.
-      //
-      try {
-        var
-            sourceLocation = new SymbolDatabase.SourceLocation {
-                StartAddress = address,
-                Length = length,
-                SourceFileKey = MakeFileKey(fileNum),
-                Line = lineNum,
-                Column = columnNum,
-            };
-
-        db_.Locations.Add(address, sourceLocation);
-      }
-      catch (Exception e) {
-        Debug.WriteLine(e.Message);
-      }
-    }
-
-    public void AddLocListEntry(ulong offset,
-                                bool isFirstEntry,
-                                ulong lowPc,
-                                ulong highPc,
-                                byte[] data) {
-      if (isFirstEntry) {
-        currentLocList_ = offset;
-        db_.LocLists.Add(offset, new List<SymbolDatabase.LocListEntry>());
-      }
-      var list = db_.LocLists[currentLocList_];
-      list.Add(
-          new SymbolDatabase.LocListEntry {
-              StartAddress = lowPc,
-              EndAddress = highPc,
-              Data = data
-          });
-    }
-
-    public bool BeginCfiEntry(ulong address) {
-      currentFrame_ = new SymbolDatabase.CallFrame {Address = address};
-      return true;
-    }
-
-    public bool AddCfiRule(ulong address,
-                           int reg,
-                           IDwarfReader.CfiRuleType ruleType,
-                           int baseRegister,
-                           int offset,
-                           byte[] expression) {
-      currentFrame_.Rules.Add(
-          new SymbolDatabase.CallFrame.Rule {
-              Address = address,
-              BaseRegister = baseRegister,
-              Expression = expression,
-              Offset = offset,
-              RegisterId = reg,
-              RuleType = ruleType
-          });
-      return true;
-    }
-
-    public bool EndCfiEntry() {
-      if (currentFrame_ == null) {
-        throw new DwarfParseException("Mismatched begin/end CFI entries");
-      }
-      db_.CallFrames.Add(currentFrame_.Address, currentFrame_);
-
-      currentFrame_ = null;
-      return true;
-    }
-
-    public void AddRangeListEntry(ulong offset,
-                                  ulong baseAddress,
-                                  ulong lowPC,
-                                  ulong highPC) {
-      if (lowPC != highPC) {
-        if (!db_.RangeLists.ContainsKey(offset)) {
-          db_.RangeLists.Add(offset, new Dictionary<ulong, RangeListEntry>());
-        }
-        if (!db_.RangeLists[offset].ContainsKey(lowPC)) {
-          var entry = new RangeListEntry {
-              Offset = offset,
-              BaseAddress = baseAddress,
-              LowPC = lowPC,
-              HighPC = highPC
-          };
-          db_.RangeLists[offset].Add(lowPC, entry);
-        }
-      }
-    }
-
-    private ulong MakeFileKey(uint fileNum) {
-      return ((ulong) compilationUnitIndex_ << 32) | fileNum;
-    }
-
-    #endregion
-
-    #region Private Implementation
-
-    private readonly SymbolDatabase db_;
-
-    private readonly Dictionary<uint, string> dirs_ =
-        new Dictionary<uint, string>();
-
-    private readonly Stack<DebugInfoEntry> scopeStack_ =
-        new Stack<DebugInfoEntry>();
-
-    private ulong attributeIndex_;
-    private ushort compilationUnitIndex_;
-    private SymbolDatabase.CallFrame currentFrame_;
-    private ulong currentLocList_;
-
-    #endregion
-  }
-
-  internal class DwarfParseException : Exception {
-    public DwarfParseException(string msg) : base(msg) {}
-  }
-}