First round of dead file removal

experimental/visual_studio_plugin/src/NaClVsx.Package/DebugSupport/BreakpointInfo.cs

Index: experimental/visual_studio_plugin/src/NaClVsx.Package/DebugSupport/BreakpointInfo.cs
diff --git a/experimental/visual_studio_plugin/src/NaClVsx.Package/DebugSupport/BreakpointInfo.cs b/experimental/visual_studio_plugin/src/NaClVsx.Package/DebugSupport/BreakpointInfo.cs
deleted file mode 100644
index ab0c32338ee5a9f82b38e19e66deac3482377bf7..0000000000000000000000000000000000000000
--- a/experimental/visual_studio_plugin/src/NaClVsx.Package/DebugSupport/BreakpointInfo.cs
+++ /dev/null
@@ -1,269 +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.Collections.Generic;
-using System.IO;
-using System.Linq;
-using Google.MsAd7.BaseImpl;
-using Google.MsAd7.BaseImpl.Ad7Enumerators;
-using Google.MsAd7.BaseImpl.Interfaces;
-using Google.NaClVsx.DebugSupport.DWARF;
-using Microsoft.VisualStudio;
-using Microsoft.VisualStudio.Debugger.Interop;
-using NaClVsx;
-
-#endregion
-
-namespace Google.NaClVsx.DebugSupport {
-  /// <summary>
-  ///   Provides address and code look-ups specific to breakpoint operations.
-  /// </summary>
-  public class BreakpointInfo : IBreakpointInfo {
-    #region  constants
-
-    public const int kBindErrorWarning = 2;
-
-    #endregion
-
-    public BreakpointInfo(SymbolDatabase database,
-                          ISimpleSymbolProvider symbolProvider) {
-      database_ = database;
-      symbolProvider_ = symbolProvider;
-    }
-
-    #region IBreakpointInfo Members
-
-    /// <summary>
-    ///   This function can be called to determine what errors would occur if
-    ///   an attempt were made to bind a breakpoint at a given location.
-    /// </summary>
-    /// <param name = "pos">
-    ///   The position at which a breakpoint is being considered.
-    /// </param>
-    /// <param name = "ppErrorEnum">
-    ///   Any errors that might be encountered if an attempt was made to set a
-    ///   breakpoint at the current location.
-    /// </param>
-    /// <returns>Whether or not the function successfully checked for errors.
-    /// </returns>
-    public int GetBindErrors(DocumentPosition pos,
-                             out IEnumDebugErrorBreakpoints2 ppErrorEnum) {
-      IEnumerable<ulong> addresses;
-      return GetBindAddresses(pos, out addresses, out ppErrorEnum);
-    }
-
-    /// <summary>
-    ///   This function exists separately from AddressFromPosition because the debugger needs
-    ///   different rules for matching addresses.  If no address is found that matches "position"
-    ///   exactly, this function will return addresses for the next appropriate position if there
-    ///   is one.
-    /// </summary>
-    /// <param name = "msvcPosition">The position in the source code where the user is trying to
-    ///   set a breakpoint.  Since this is supplied by msvc, it's 0-indexed</param>
-    /// <param name = "outAddresses">Any memory addresses that can be appropriately mapped to
-    ///   position</param>
-    /// <param name = "outErrorEnum">Any errors encountered while this breakpoint was being set.
-    /// </param>
-    /// <returns>If the breakpoint was set successfully at the exact location requested, this
-    ///   function returns VSConstants.S_OK.  If the breakpoint was set in a different location,
-    ///   the function returns kBindErrorWarning.  If the breakpoint cannot be set at all, it
-    ///   returns S_FALSE.</returns>
-    public int GetBindAddresses(DocumentPosition msvcPosition,
-                                out IEnumerable<ulong> outAddresses,
-                                out IEnumDebugErrorBreakpoints2 outErrorEnum) {
-      var addressesBound = VSConstants.S_FALSE;
-      outAddresses = new List<ulong>();
-      var addresses = outAddresses as List<ulong>;
-      outErrorEnum = new ErrorBreakpointEnumerator();
-      var breakpointErrorEnum = outErrorEnum as ErrorBreakpointEnumerator;
-
-      var fileName = GetFileName(msvcPosition);
-      if (fileName != null) {
-        var files =
-            database_.SourceFilesByFilename[fileName];
-
-        if (files.Count() >= 1) {
-          var file = files.First();
-          // Remember the path that was passed in, since that's where
-          // the current debugging session knows where to find this
-          // file
-          file.CurrentAbsolutePath = msvcPosition.Path;
-
-          // Internally, MSVC uses zero-based lines. This is in contrast
-          // to both DWARF and MSVC's own user interface, but whatever.
-          var line =
-              NaClSymbolProvider.GetDwarfLineIndex(msvcPosition.BeginPos.dwLine);
-          var locations =
-              GetBreakpointLocations(file, line);
-
-          foreach (var loc in locations) {
-            var address = loc.StartAddress + symbolProvider_.GetBaseAddress();
-            addresses.Add(address);
-
-            var documentContext = new DocumentContext(
-                msvcPosition.Path,
-                NaClSymbolProvider.GetMSVCLineIndex(loc.Line),
-                loc.Column);
-
-            // The check decides whether we move the breakpoint to compensate for user
-            // error. We have to get the addresses first because they are needed for the
-            // code context part of the error.
-            if (loc.Line != line) {
-              var resolution = new ErrorBreakpointResolution();
-              resolution.Type = enum_BP_ERROR_TYPE.BPET_SEV_LOW |
-                                enum_BP_ERROR_TYPE.BPET_TYPE_WARNING;
-
-              resolution.SetLocation(
-                  enum_BP_TYPE.BPT_CODE, address, documentContext);
-              resolution.Message = "Had to move breakpoint to a different line.";
-
-              var breakpointError = new ErrorBreakpoint(resolution);
-              breakpointErrorEnum.Insert(breakpointError);
-            }
-          }
-
-          uint count;
-          var getCountSuccess = outErrorEnum.GetCount(out count);
-          if (getCountSuccess == VSConstants.S_OK && count > 0) {
-            addressesBound = kBindErrorWarning;
-          } else {
-            addressesBound = VSConstants.S_OK;
-          }
-        }
-      }
-
-      // There are any number of reasons why this could have failed completely
-      if (addresses.Count() == 0) {
-        var resolution = new ErrorBreakpointResolution();
-        resolution.Type = enum_BP_ERROR_TYPE.BPET_GENERAL_ERROR;
-        resolution.Message =
-            "Could not set a breakpoint at the requested location.";
-        var error = new ErrorBreakpoint(resolution);
-        breakpointErrorEnum.Insert(error);
-        addressesBound = VSConstants.S_FALSE;
-      }
-      return addressesBound;
-    }
-
-    #endregion
-
-    #region Private Implementation
-
-    private readonly SymbolDatabase database_;
-    private readonly ISimpleSymbolProvider symbolProvider_;
-
-    #endregion
-
-    #region Private Implementation
-
-    /// <summary>
-    ///   This function retrieves plausible code locations for the given
-    ///   breakpoint information.
-    /// </summary>
-    /// <param name = "file"></param>
-    /// <param name = "line"></param>
-    /// <returns></returns>
-    private IEnumerable<SymbolDatabase.SourceLocation> GetBreakpointLocations(
-        SymbolDatabase.SourceFile file,
-        uint line) {
-      IEnumerable<SymbolDatabase.SourceLocation> finalLocations =
-          new List<SymbolDatabase.SourceLocation>();
-
-      // This will match any lines of code in a compatible scope at or after the 
-      // line where the breakpoint was requested.
-      var locationGuesses =
-          new Dictionary<ulong, List<SymbolDatabase.SourceLocation>>();
-      foreach (var loc in database_.LocationsByFile[file.Key]) {
-        if (IsSuitableBreakpoint(loc, line)) {
-          if (!locationGuesses.ContainsKey(loc.Line)) {
-            locationGuesses.Add(
-                loc.Line, new List<SymbolDatabase.SourceLocation>());
-          }
-          locationGuesses[loc.Line].Add(loc);
-        }
-      }
-
-      if (locationGuesses.Count() > 0) {
-        var locationLines = new List<ulong>();
-        locationLines.AddRange(locationGuesses.Keys);
-        locationLines.Sort();
-        finalLocations = locationGuesses[locationLines.First()];
-      }
-
-      return finalLocations;
-    }
-
-    /// <summary>
-    ///   Gets the name of hte file that contains |position|.
-    /// </summary>
-    /// <param name = "position">
-    ///   The position whose file name is needed.
-    /// </param>
-    /// <returns>
-    ///   Returns the name of the file that contains |position|.
-    /// </returns>
-    private string GetFileName(DocumentPosition position) {
-      string rValue = null;
-      var fileName = Path.GetFileName(position.Path);
-      if (fileName != null) {
-        if (database_.SourceFilesByFilename.ContainsKey(fileName)) {
-          rValue = fileName;
-        }
-      }
-      return rValue;
-    }
-
-    /// <summary>
-    ///   This function checks whether a given |location| would make a 
-    ///   suitable breakpoint for a |originalLine| of code the user requested.
-    ///   In order to qualify the location must be either equal to or greater
-    ///   than the requested line of code and must be in the same scope.
-    ///   The caller of this function will then have to resolve the suitable
-    ///   location that is closest to what the user requested.
-    /// </summary>
-    /// <param name = "location">
-    ///   A source code location to examine as a possible breakpoint location.
-    /// </param>
-    /// <param name = "originalLine">
-    ///   The line at which the user wants to set the breakpoint.
-    /// </param>
-    /// <returns>
-    ///   |true| iff the location could serve as a breakpoint location.
-    /// </returns>
-    private bool IsSuitableBreakpoint(SymbolDatabase.SourceLocation location,
-                                      uint originalLine) {
-      var suitableBreakpoint = false;
-
-      if (location.Line >= originalLine) {
-        // This could be suitable breakpoint if the current location's
-        // line is in the same scope as the original line.
-        var scope =
-            database_.GetScopeForAddress(location.StartAddress);
-
-        var sortedLocationsInScope =
-            database_.GetLocationsByLine(scope, location.StartAddress);
-        if (sortedLocationsInScope.First().Line <= originalLine) {
-          suitableBreakpoint = true;
-        } else if (scope.Tag == DwarfTag.DW_TAG_catch_block ||
-                   scope.Tag == DwarfTag.DW_TAG_try_block ||
-                   scope.Tag == DwarfTag.DW_TAG_lexical_block) {
-          // This could still be a suitable breakpoint if this scope entry
-          // is for a subscope of a function that begins before the 
-          // original line.
-          var outerScope = scope.OuterScope;
-          var sortedLocationsInOuterScope =
-              database_.GetLocationsByLine(outerScope, location.StartAddress);
-          if (sortedLocationsInOuterScope.First().Line <= originalLine) {
-            suitableBreakpoint = true;
-          }
-        }
-      }
-      return suitableBreakpoint;
-    }
-
-    #endregion
-  }
-}