internal PdbEntry TaskStarted(TaskStartedEventArgs e)
{
PdbEntry taskSymbol = null;
// We need to deal with 2 issues (a) batching (b) consecutive targets with same name (c) both
// We will make a compromise here - in case of (c), we will have one symbol for the 1st task
// and rest of symbols for the 2nd - irrespective of kind of combination we have for (c)
// i.e. 3M M or 2M 2M or M 3M are all treated as M 3M
string currentTaskName = projectStack.Peek().TargetStack.Peek().TargetSymbol.Children[projectStack.Peek().TargetStack.Peek().TaskNumber].Name;
if (!string.Equals(e.TaskName, currentTaskName, StringComparison.OrdinalIgnoreCase))
{
taskSymbol = projectStack.Peek().TargetStack.Peek().TargetSymbol.Children[++projectStack.Peek().TargetStack.Peek().TaskNumber];
}
else
{
string nextTaskName = (projectStack.Peek().TargetStack.Peek().TaskNumber < (projectStack.Peek().TargetStack.Peek().TargetSymbol.Children.Count - 1)) ?
projectStack.Peek().TargetStack.Peek().TargetSymbol.Children[projectStack.Peek().TargetStack.Peek().TaskNumber + 1].Name : null;
if (string.Equals(e.TaskName, nextTaskName, StringComparison.OrdinalIgnoreCase))
{
++projectStack.Peek().TargetStack.Peek().TaskNumber;
}
taskSymbol = projectStack.Peek().TargetStack.Peek().TargetSymbol.Children[projectStack.Peek().TargetStack.Peek().TaskNumber];
}
// Return the symbol
Debug.Assert(null != taskSymbol, "taskSymbol is null - this should never happen, we are going to crash!");
return(taskSymbol);
}
internal PdbEntry TargetStarted(TargetStartedEventArgs e)
{
// Get the current target symbol
PdbEntry targetSymbol = SymbolStore.Instance[e.TargetFile].TargetSymbolEntries[e.TargetName];
// Create a stackframe
projectStack.Peek().TargetStack.Push(new TargetStackFrame(targetSymbol));
return(targetSymbol);
}
/// <summary>
/// Target Started
/// </summary>
void eventSource_TargetStarted(object sender, TargetStartedEventArgs e)
{
// Load symbol information
SymbolStore.Instance.LoadSymbols(e.TargetFile);
// Create stack frame
PdbEntry symbol = _contextCracker.TargetStarted(e);
_callStack.Push(new StackFrame {
ExecutablePath = e.TargetFile,
TargetName = e.TargetName,
TaskName = null,
StartLocation = symbol.StartLocation,
EndLocation = symbol.EndLocation
});
LogBuildEventArgs(e, "TargetStarted");
_debuggerHost.DoExecutableBlockStarted(_callStack.ToArray());
}
internal BreakPoint BindBreakPoint(BreakPoint unboundBreakPoint)
{
BreakPoint boundBreakPoint = null;
// Load the symbols, if not loaded already
SymbolStore.Instance.LoadSymbols(unboundBreakPoint.ExecutablePath);
PDB pdb = SymbolStore.Instance[unboundBreakPoint.ExecutablePath];
PdbEntry bpSymbol = null;
// First determine the target
PdbEntry targetSymbol = null;
PdbEntry[] targetSymbolEntries = pdb.TargetSymbolEntries.Values.ToArray();
for (int i = 0; i < targetSymbolEntries.Length - 1; i++)
{
PdbEntry currEntry = targetSymbolEntries[i];
PdbEntry nextEntry = targetSymbolEntries[i + 1];
if (
currEntry.StartLocation.Y <= unboundBreakPoint.Location.Y &&
unboundBreakPoint.Location.Y < nextEntry.StartLocation.Y
)
{
targetSymbol = currEntry;
break;
}
}
// Project with no targets
if (0 == targetSymbolEntries.Length)
{
targetSymbol = pdb.ProjectPdbEntry;
}
if ((0 != targetSymbolEntries.Length) && (null == targetSymbol))
{
// Ok so the break point is not between targets 1-2, 2-3, 3-4, 4-5
// So it can be either before 1 or after 5
// Before 1 => The BP is at project start
// After 5 => BP at the last target
if (targetSymbolEntries[0].StartLocation.Y >= unboundBreakPoint.Location.Y)
{
targetSymbol = pdb.ProjectPdbEntry;
}
else
{
targetSymbol = targetSymbolEntries[targetSymbolEntries.Length - 1];
}
}
if (null == targetSymbol)
{
goto Done;
}
// Second determine the task
PdbEntry taskSymbol = null;
for (int i = 0; i < targetSymbol.Children.Count - 1; i++)
{
PdbEntry currEntry = targetSymbol.Children[i];
PdbEntry nextEntry = targetSymbol.Children[i + 1];
if (
currEntry.StartLocation.Y <= unboundBreakPoint.Location.Y &&
unboundBreakPoint.Location.Y < nextEntry.StartLocation.Y
)
{
taskSymbol = currEntry;
break;
}
}
if ((0 != targetSymbol.Children.Count) && (null == taskSymbol))
{
// Ok so the break point is not between tasks 1-2, 2-3, 3-4, 4-5
// So it can be either before 1 or after 5
// Before 1 => The BP is at target start
// After 5 => BP at the last task
// Take care of only 'after 5' case since not getting the symbol means 'before 1' case
if (targetSymbol.Children[targetSymbol.Children.Count - 1].StartLocation.Y <= unboundBreakPoint.Location.Y)
{
taskSymbol = targetSymbol.Children[targetSymbol.Children.Count - 1];
}
}
// If we didnt get a task, no issues, set BP on the target
bpSymbol = taskSymbol ?? targetSymbol;
// Third create and note down the bound bp
boundBreakPoint = _breakPoints.Find(bp => (bp.Location == bpSymbol.StartLocation));
if (null == boundBreakPoint)
{
boundBreakPoint = new BreakPoint
{
ExecutablePath = unboundBreakPoint.ExecutablePath,
Location = bpSymbol.StartLocation
};
_breakPoints.Add(boundBreakPoint);
}
Done:
return(boundBreakPoint);
}
internal TargetStackFrame(PdbEntry targetSymbol)
{
TargetSymbol = targetSymbol;
TaskNumber = 0;
}
private void PopulateSymbolInformation()
{
using (XmlTextReader reader = new XmlTextReader(ExecutablePath))
{
// Read into the Project Element
do
{
reader.Read();
}while (!reader.Name.Equals("Project", StringComparison.OrdinalIgnoreCase));
// Set the start location
ProjectPdbEntry.StartLocation = new Point(reader.LinePosition, reader.LineNumber);
if (reader.IsEmptyElement)
{
ProjectPdbEntry.EndLocation = ProjectPdbEntry.StartLocation;
}
// Start traversing the XML
int currentTask = -1;
Stack <PdbEntry> contextStack = new Stack <PdbEntry>();
while (reader.Read())
{
// Not interested in things other than Elements
if ((XmlNodeType.Element != reader.NodeType) && (XmlNodeType.EndElement != reader.NodeType))
{
continue;
}
// If it is the </Project> tag, set the end location
if ((XmlNodeType.EndElement == reader.NodeType) && reader.Name.Equals("Project", StringComparison.OrdinalIgnoreCase))
{
ProjectPdbEntry.EndLocation = new Point(reader.LinePosition, reader.LineNumber);
continue;
}
// Ignore everything except a Target element or its children
if (0 == contextStack.Count)
{
if (!reader.Name.Equals("Target", StringComparison.OrdinalIgnoreCase))
{
continue;
}
// We have just entered a Target element
PdbEntry symEntry = new PdbEntry(reader["Name"], ExecutablePath);
symEntry.StartLocation = new Point(reader.LinePosition, reader.LineNumber);
TargetSymbolEntries[reader["Name"]] = symEntry; // Note that this enables the 'oveerriding' behavior of MSBuild Targets
contextStack.Push(symEntry);
// Close this context if it is an empty element
if (reader.IsEmptyElement)
{
symEntry.EndLocation = new Point(reader.LinePosition, reader.LineNumber);
contextStack.Pop();
}
// Lets proceed
continue;
}
// We are now in one of the target's children or it closing element.
// Lets eat up the PropertyGroup and ItemGroups
if (
reader.Name.Equals("PropertyGroup", StringComparison.OrdinalIgnoreCase) ||
reader.Name.Equals("ItemGroup", StringComparison.OrdinalIgnoreCase)
)
{
if (!reader.IsEmptyElement)
{
// Eat up the non-empty node and all its childres - burrrp!
string name = reader.Name;
int depth = reader.Depth;
do
{
reader.Read();
}while ((XmlNodeType.EndElement != reader.NodeType) || !reader.Name.Equals(name, StringComparison.OrdinalIgnoreCase) || (reader.Depth != depth));
}
continue;
}
// We could now be on a Task
if (XmlNodeType.Element == reader.NodeType)
{
PdbEntry taskSymEntry = new PdbEntry(reader.Name, ExecutablePath);
taskSymEntry.StartLocation = new Point(reader.LinePosition, reader.LineNumber);
if (!reader.IsEmptyElement)
{
// Not an empty task element - has some child elements like <Output> - so eat up all children
string nodeName = reader.Name;
int currDepth = reader.Depth;
do
{
reader.Read();
}while ((XmlNodeType.EndElement != reader.NodeType) || !reader.Name.Equals(nodeName, StringComparison.OrdinalIgnoreCase) || (reader.Depth != currDepth));
}
taskSymEntry.EndLocation = new Point(reader.LinePosition, reader.LineNumber);
contextStack.Peek().Children.Add(taskSymEntry);
currentTask++;
continue;
}
// Consider EndElement
if ((XmlNodeType.EndElement == reader.NodeType))
{
// Now Name has to be "Target"
Debug.Assert(reader.Name.Equals("Target", StringComparison.OrdinalIgnoreCase));
contextStack.Peek().EndLocation = new Point(reader.LinePosition, reader.LineNumber);
contextStack.Pop();
currentTask = -1;
continue;
}
}
}
}
