/// <summary>
/// Parses the specified file on disk.
/// </summary>
/// <param name="filename"></param>
private void EnqueueFile(IProjectEntry projEntry, string filename)
{
// get the current snapshot from the UI thread
EnqueWorker(() => {
for (int i = 0; i < 10; i++)
{
try {
if (!File.Exists(filename))
{
break;
}
var cookie = new FileCookie(filename);
var reader = new StreamReader(
new FileStream(filename, FileMode.Open, FileAccess.Read, FileShare.ReadWrite | FileShare.Delete)
);
using (reader) {
ParseFile(projEntry, filename, reader, cookie);
}
return;
} catch (IOException) {
// file being copied, try again...
Thread.Sleep(100);
} catch (UnauthorizedAccessException) {
// file is inaccessible, try again...
Thread.Sleep(100);
}
}
IJsProjectEntry pyEntry = projEntry as IJsProjectEntry;
if (pyEntry != null)
{
// failed to parse, keep the UpdateTree calls balanced
pyEntry.UpdateTree(null, null);
}
});
}
internal void ParseFile(IProjectEntry entry, string filename, Stream content, Severity indentationSeverity) {
IPythonProjectEntry pyEntry;
IExternalProjectEntry externalEntry;
TextReader reader = null;
ITextSnapshot snapshot = GetOpenSnapshot(entry);
string zipFileName = GetZipFileName(entry);
string pathInZipFile = GetPathInZipFile(entry);
IAnalysisCookie cookie;
if (snapshot != null) {
cookie = new SnapshotCookie(snapshot);
reader = new SnapshotSpanSourceCodeReader(new SnapshotSpan(snapshot, 0, snapshot.Length));
} else if (zipFileName != null) {
cookie = new ZipFileCookie(zipFileName, pathInZipFile);
} else {
cookie = new FileCookie(filename);
}
if ((pyEntry = entry as IPythonProjectEntry) != null) {
PythonAst ast;
CollectingErrorSink errorSink;
List<TaskProviderItem> commentTasks;
if (reader != null) {
ParsePythonCode(snapshot, reader, indentationSeverity, out ast, out errorSink, out commentTasks);
} else {
ParsePythonCode(snapshot, content, indentationSeverity, out ast, out errorSink, out commentTasks);
}
if (ast != null) {
pyEntry.UpdateTree(ast, cookie);
} else {
// notify that we failed to update the existing analysis
pyEntry.UpdateTree(null, null);
}
// update squiggles for the buffer. snapshot may be null if we
// are analyzing a file that is not open
UpdateErrorsAndWarnings(entry, snapshot, errorSink, commentTasks);
// enqueue analysis of the file
if (ast != null) {
_analysisQueue.Enqueue(pyEntry, AnalysisPriority.Normal);
}
} else if ((externalEntry = entry as IExternalProjectEntry) != null) {
externalEntry.ParseContent(reader ?? new StreamReader(content), cookie);
_analysisQueue.Enqueue(entry, AnalysisPriority.Normal);
}
}
