//// todo: eliminate this method later
//private static void AugmentProjectModelWithAlgorithmBase(ProjectModel model)
//{
// model.Children.Add(QcAlgorithmFileModel.Value);
//}
public static ProjectAnalysisResult RunFullProjectAnalysis(ProjectAnalysisRequest projectAnalysisRequest)
{
Stopwatch sw = Stopwatch.StartNew();
ProjectAnalysisResult projectAnalysisResult = new ProjectAnalysisResult();
ProjectModel projectModel = projectAnalysisRequest.ProjectModel;
// todo: Ask Jared why QCAlgorithm is a partial class and why it's not included in "common"
#if false
// ************************************************************************************
// NOTE: In order to get this project building cleanly, with minimal dependencies
// before checking into Github, I've removed all hard QuantConnect dependencies,
// including the QCAlgorithm.cs embedded resource and the assembly references to
// QuantConnect.Algorithm.Interface
// Augment the project model with the QCAgorithm base class
// projectModel.Children.Add(QcAlgorithmFileModel.Value);
// ************************************************************************************
#endif
// Set up the project (if not already done)
if (projectModel.ProjectContent == null)
{
projectModel.ProjectContent = new CSharpProjectContent();
projectModel.ProjectContent = projectModel.ProjectContent.AddAssemblyReferences(QCReferences.Value);
}
// For each new file, we need to integrate it into the project content
var fileModelsInProject = projectModel.GetFileDescendants().ToArray();
foreach (var fileModelInProject in fileModelsInProject)
{
IntegrateFileModel(projectModel, fileModelInProject);
}
// We can return now if no code completion was requested
if (projectAnalysisRequest.CodeCompletionParameters == null)
{
projectAnalysisResult.TimeElapsed = sw.Elapsed;
return projectAnalysisResult;
}
// Now it's time to give attention specifically to the matter of resolving the code completion
// options. This, of course, requires a deeper analysis of the specified file...
var codeCompletionParams = projectAnalysisRequest.CodeCompletionParameters;
// Locate the file in the project
ProjectFileModel fileModel = projectModel.FindFile(codeCompletionParams.FileId);
if (fileModel == null)
throw new Exception("Specified file does not exist in this project");
// Create a TypeSystem.ICompilation that allows resolving within the project.
var compilation = projectModel.ProjectContent.CreateCompilation();
#region Resolve text cursor/caret location
// The text cursor position is crucial to creating a properly-scoped type resolution context
// so as to get relevant code completion suggestions.
int textCursorOffset = 0;
TextLocation textCursorLocation = new TextLocation(1, 1);
ReadOnlyDocument doc = new ReadOnlyDocument(fileModel.Content);
try
{
// if line and column aren't set, we'll assume that the cursor offset/index is set
if (codeCompletionParams.Line == 0 && codeCompletionParams.Column == 0)
{
textCursorOffset = codeCompletionParams.Offset;
if (textCursorOffset < 0) textCursorOffset = 0;
textCursorLocation = doc.GetLocation(textCursorOffset);
}
// if either line or column are invalid (i.e. <= 0), then we'll use offset 0 instead
else if (codeCompletionParams.Line <= 0 || codeCompletionParams.Column <= 0)
{
textCursorOffset = 0;
}
else
{
textCursorLocation = new TextLocation(codeCompletionParams.Line, codeCompletionParams.Column);
textCursorOffset = doc.GetOffset(textCursorLocation);
codeCompletionParams.Offset = textCursorOffset;
}
}
catch (Exception)
{
textCursorOffset = 0;
textCursorLocation = new TextLocation(1, 1);
}
finally
{
projectAnalysisResult.Line = textCursorLocation.Line;
projectAnalysisResult.Column = textCursorLocation.Column;
projectAnalysisResult.Offset = textCursorOffset;
}
#endregion
#region Create and Refine the type resolution context as much as possible based upon the cursor position
var typeResolveContext = new CSharpTypeResolveContext(compilation.MainAssembly);
// Constrain the resolve context by using scope
typeResolveContext = typeResolveContext
.WithUsingScope(fileModel.UnresolvedFile.GetUsingScope(textCursorLocation)
.Resolve(compilation));
var curDef = fileModel.UnresolvedFile.GetInnermostTypeDefinition(textCursorLocation);
if (curDef != null)
{
var resolvedDef = curDef.Resolve(typeResolveContext).GetDefinition();
typeResolveContext = typeResolveContext.WithCurrentTypeDefinition(resolvedDef);
var curMember = resolvedDef.Members.FirstOrDefault(m => m.Region.Begin <= textCursorLocation && textCursorLocation < m.BodyRegion.End);
if (curMember != null)
{
typeResolveContext = typeResolveContext.WithCurrentMember(curMember);
}
}
#endregion
// The purpose of the rest of these steps is a little fuzzy in my mind...
// I'm still trying to understand them fully and if/why they're all needed.
// It seems there is some redundancy here...
var completionContext = new DefaultCompletionContextProvider(doc, fileModel.UnresolvedFile);
#region Add Preprocessor Symbols??
completionContext.AddSymbol("TEST");
foreach (var sym in fileModel.SyntaxTree.ConditionalSymbols)
completionContext.AddSymbol(sym);
#endregion
var completionDataFactory = new CodeCompletionDataFactory(new CSharpResolver(typeResolveContext));
var completionEngine = new CSharpCompletionEngine(doc, completionContext, completionDataFactory, projectModel.ProjectContent, typeResolveContext);
completionEngine.EolMarker = Environment.NewLine;
completionEngine.FormattingPolicy = FormattingOptionsFactory.CreateMono();
projectModel.CompletionEngine = completionEngine;
// Attach contextual info to analysis result
GetDocumentContext(projectAnalysisResult, textCursorOffset, doc);
// Finally, generate completion data!
var completionOptions = completionEngine.GetCompletionData(textCursorOffset, projectAnalysisRequest.CodeCompletionParameters.CtrlSpace).ToArray();
projectAnalysisResult.CompletionOptions = completionOptions.OrderBy(x => x.CompletionText).ToArray();
projectAnalysisResult.AutoCompleteEmptyMatch = completionEngine.AutoCompleteEmptyMatch;
projectAnalysisResult.AutoSelect = completionEngine.AutoSelect;
projectAnalysisResult.DefaultCompletionString = completionEngine.DefaultCompletionString;
int startPos, wordLength;
if (completionEngine.TryGetCompletionWord(textCursorOffset, out startPos, out wordLength))
{
//Debug.WriteLine("TryGetCompletionWord :: startpos:{0} wordlength:{1}", startPos, wordLength);
string completionWord = projectAnalysisResult.CompletionWord = doc.GetText(startPos, wordLength);
if (!string.IsNullOrWhiteSpace(completionWord))
{
var bestMatch = projectAnalysisResult.CompletionOptions
.FirstOrDefault(x => x.CompletionText.CompareTo(completionWord) >= 0);
projectAnalysisResult.BestMatchToCompletionWord = bestMatch;
//if (bestMatch != null)
//projectAnalysisResult.BestMatchToCompletionWord = bestMatch.CompletionText;
}
}
projectAnalysisResult.TimeElapsed = sw.Elapsed;
return projectAnalysisResult;
}
private static void GetDocumentContext(ProjectAnalysisResult result, int textCursorOffset, ReadOnlyDocument doc)
{
#region Debugging Aid
// Resolve content around text cursor
#if false
int numberOfCharactersAroundCursorToResolve = 20;
int firstCharOffset = textCursorOffset - numberOfCharactersAroundCursorToResolve / 2;
int lastCharOffset = textCursorOffset + numberOfCharactersAroundCursorToResolve / 2;
#else
int firstCharOffset = textCursorOffset - 40;
int lastCharOffset = textCursorOffset + 20;
#endif
// shift window to the "right"
if (firstCharOffset < 0)
{
lastCharOffset -= firstCharOffset;
firstCharOffset = 0;
}
// shift window to the "left"
if (lastCharOffset > doc.TextLength)
{
firstCharOffset -= (lastCharOffset - doc.TextLength);
lastCharOffset = doc.TextLength;
// compensate, in case "left" side of window is in the void
if (firstCharOffset < 0)
firstCharOffset = 0;
}
//if (doc.TextLength < firstCharOffset + numberOfCharactersAroundCursorToResolve)
// numberOfCharactersAroundCursorToResolve = doc.TextLength - firstCharOffset;
//string surroundingText = doc.GetText(firstCharOffset, numberOfCharactersAroundCursorToResolve);
//Debug.WriteLine("Text around cursor: [{0}]", surroundingText);
result.CompletionContextBefore = doc.GetText(firstCharOffset, textCursorOffset - firstCharOffset);
result.CompletionContextAfter = doc.GetText(textCursorOffset, lastCharOffset - textCursorOffset);
Debug.WriteLine("Completion Context: \"{0}\" <cursor> \"{1}\"", result.CompletionContextBefore, result.CompletionContextAfter);
#endregion
}
