public override Definition OnDefinition(TextDocumentPosition parameters)
{
AnalyticsWrapper.Telemetry.TrackEvent("[Definition]", EventType.Completion); //Send event to analytics
var defaultDefinition = new Definition(parameters.uri, new Range());
Uri objUri = new Uri(parameters.uri);
if (objUri.IsFile)
{
var fileCompiler = typeCobolWorkspace.OpenedFileCompiler[objUri];
if (fileCompiler.CompilationResultsForProgram != null &&
fileCompiler.CompilationResultsForProgram.ProcessedTokensDocumentSnapshot != null)
{
var matchingCodeElement =
fileCompiler.CompilationResultsForProgram.ProgramClassDocumentSnapshot.NodeCodeElementLinkers
.Keys.FirstOrDefault(c => c.ConsumedTokens.Any(
t => t.Line == parameters.position.line + 1 &&
parameters.position.character >= t.StartIndex &&
parameters.position.character <= t.StopIndex + 1));
if (matchingCodeElement == null)
{
return(defaultDefinition);
}
var matchingNode = fileCompiler.CompilationResultsForProgram.ProgramClassDocumentSnapshot.NodeCodeElementLinkers[matchingCodeElement];
if (matchingNode == null)
{
return(defaultDefinition);
}
var matchingToken = matchingCodeElement.ConsumedTokens.FirstOrDefault(t =>
t.Line == parameters.position.line + 1 &&
parameters.position.character >= t.StartIndex &&
parameters.position.character <= t.StopIndex + 1);
if (matchingToken == null)
{
return(defaultDefinition);
}
Token userFilterToken = null;
Token lastSignificantToken = null;
var potentialDefinitionNodes = new List <Node>();
CodeElementMatcher.MatchCompletionCodeElement(parameters.position, new List <CodeElementWrapper>()
{
new CodeElementWrapper(matchingCodeElement)
}, out userFilterToken, out lastSignificantToken); //Magic happens here
if (lastSignificantToken != null)
{
switch (lastSignificantToken.TokenType)
{
case TokenType.PERFORM:
{
potentialDefinitionNodes.AddRange(
matchingNode.SymbolTable.GetParagraphs(
p => p.Name.Equals(matchingToken.Text, StringComparison.InvariantCultureIgnoreCase)));
break;
}
case TokenType.CALL:
{
potentialDefinitionNodes.AddRange(matchingNode.SymbolTable.GetFunctions(
f => f.Name.Equals(matchingToken.Text, StringComparison.InvariantCultureIgnoreCase),
new List <SymbolTable.Scope>()
{
SymbolTable.Scope.Declarations,
SymbolTable.Scope.Global
}));
break;
}
case TokenType.TYPE:
{
potentialDefinitionNodes.AddRange(matchingNode.SymbolTable.GetTypes(
t => t.Name.Equals(matchingToken.Text, StringComparison.InvariantCultureIgnoreCase),
new List <SymbolTable.Scope>()
{
SymbolTable.Scope.Declarations,
SymbolTable.Scope.Global
}));
break;
}
case TokenType.INPUT:
case TokenType.OUTPUT:
case TokenType.IN_OUT:
case TokenType.MOVE:
case TokenType.TO:
default:
{
potentialDefinitionNodes.AddRange(matchingNode.SymbolTable.GetVariables(
v => v.Name.Equals(matchingToken.Text, StringComparison.InvariantCultureIgnoreCase),
new List <SymbolTable.Scope>()
{
SymbolTable.Scope.Declarations,
SymbolTable.Scope.Global
}));
break;
}
}
}
if (potentialDefinitionNodes.Count > 0)
{
var nodeDefinition = potentialDefinitionNodes.FirstOrDefault();
if (nodeDefinition != null)
{
return(new Definition(parameters.uri,
new Range()
{
start = new Position(nodeDefinition.CodeElement.Line - 1, 0)
}));
}
}
}
}
return(defaultDefinition);
}
public static IEnumerable <CompletionItem> GetCompletionForQualifiedName(Position position, FileCompiler fileCompiler, CodeElement codeElement, Token qualifiedNameSeparatorToken, Token userFilterToken, Dictionary <SignatureInformation, FunctionDeclaration> functionDeclarationSignatureDictionary)
{
var completionItems = new List <CompletionItem>();
var arrangedCodeElement = codeElement as CodeElementWrapper;
var node = GetMatchingNode(fileCompiler, codeElement);
var userFilterText = userFilterToken == null ? string.Empty : userFilterToken.Text;
//Get the token before MatchingToken
var userTokenToSeek =
arrangedCodeElement?.ArrangedConsumedTokens.ElementAt(
arrangedCodeElement.ArrangedConsumedTokens.IndexOf(qualifiedNameSeparatorToken) - 1);
var qualifiedNameTokens = new List <Token>();
if (arrangedCodeElement != null)
{
qualifiedNameTokens.AddRange(
arrangedCodeElement.ArrangedConsumedTokens?.Where(
t => (t?.TokenType == TokenType.UserDefinedWord || t?.TokenType == TokenType.QualifiedNameSeparator) && (t.EndColumn <= position.character && t.Line == position.line + 1) || t.Line < position.line + 1));
//Remove all the userdefinedword token and also QualifiedNameToken
arrangedCodeElement.ArrangedConsumedTokens = arrangedCodeElement.ArrangedConsumedTokens.Except(qualifiedNameTokens).ToList();
//We only wants the token that in front of any QualifiedName
//Get the first significant token (i.e CALL/TYPE/...)
Token firstSignificantToken, tempUserFilterToken;
CodeElementMatcher.MatchCompletionCodeElement(position, new List <CodeElementWrapper> {
arrangedCodeElement
}, out tempUserFilterToken,
out firstSignificantToken);
//Select the qualifiedName chain closest to cursor
Token previousToken = null;
qualifiedNameTokens.Reverse();
var filteredQualifiedNameTokens = new List <Token>(); //Will contains all the tokens forming the qualifiedName chain.
foreach (var token in qualifiedNameTokens)
{
if (previousToken == null ||
((previousToken.TokenType == TokenType.QualifiedNameSeparator && token.TokenType == TokenType.UserDefinedWord) ||
(token.TokenType == TokenType.QualifiedNameSeparator && previousToken.TokenType == TokenType.UserDefinedWord)))
{
filteredQualifiedNameTokens.Add(token);
}
else
{
break;
}
previousToken = token;
}
filteredQualifiedNameTokens.Reverse();
//For MOVE INPUT OUTPUT variables etc.. , get all the children of a variable that are accessible
//Try to find corresponding variables
var qualifiedName = string.Join(".",
filteredQualifiedNameTokens.Where(
t =>
t.TokenType == TokenType.UserDefinedWord &&
!(t.Text == userFilterText && userFilterToken != null &&
t.StartIndex == userFilterToken.StartIndex && t.EndColumn == userFilterToken.EndColumn) &&
((firstSignificantToken != null && ((t.StartIndex >= firstSignificantToken.EndColumn && t.Line == firstSignificantToken.Line) || t.Line > firstSignificantToken.Line)) ||
firstSignificantToken == null) &&
((t.EndColumn <= position.character && t.Line == position.line + 1) || t.Line < position.line + 1))
.Select(t => t.Text));
var possibleVariables = node.SymbolTable.GetVariablesExplicit(new URI(qualifiedName));
if (possibleVariables != null && possibleVariables.Any())
{
//Get children of a type to get completion possibilities
foreach (var variable in possibleVariables)
{
var children = new List <Node>();
if (variable.Children != null && variable.Children.Count > 0) //It's a variable with levels inside
{
children.AddRange(variable.Children);
}
else //It's a typed variable, we have to search for children in the type
{
var typeChildren = GetTypeChildrens(node.SymbolTable, variable);
if (typeChildren != null)
{
children.AddRange(typeChildren.Where(t => t.Name != null));
}
}
var computedChildrenList = new List <Node>();
foreach (var child in children)
{
GetNextRelevantChildren(child, computedChildrenList);
}
completionItems.AddRange(CompletionFactoryHelpers.CreateCompletionItemsForVariables(
computedChildrenList.Where(
c => c.Name.StartsWith(userFilterText, StringComparison.InvariantCultureIgnoreCase)) //Filter on user text
.Select(child => child as DataDefinition), false));
}
}
else
{ //If no variables found, it's could be a children declared in a typedef..
var children = new List <Node>();
var potentialTypes =
node.SymbolTable.GetTypes(
t =>
t.Children != null &&
t.Children.Any(
tc => tc.Name != null && tc.Name.Equals(userTokenToSeek.Text, StringComparison.InvariantCultureIgnoreCase)),
new List <SymbolTable.Scope>
{
SymbolTable.Scope.Declarations,
SymbolTable.Scope.Global,
SymbolTable.Scope.Intrinsic,
SymbolTable.Scope.Namespace
});
foreach (var nodeType in potentialTypes.SelectMany(t => t.Children).Where(c => c != null && c.Name != null && c.Name.Equals(userTokenToSeek.Text, StringComparison.InvariantCultureIgnoreCase)))
{
var nodeDataDef = nodeType as DataDefinition;
if (nodeDataDef == null)
{
continue;
}
var typeChildrens = GetTypeChildrens(node.SymbolTable, nodeDataDef);
if (typeChildrens != null)
{
children.AddRange(typeChildrens);
}
}
completionItems.AddRange(CompletionFactoryHelpers.CreateCompletionItemsForVariables(
children.Where(
c => c.Name.StartsWith(userFilterText, StringComparison.InvariantCultureIgnoreCase)) //Filter on user text
.Select(child => child as DataDefinition), false));
}
if (firstSignificantToken != null)
{
switch (firstSignificantToken.TokenType)
{
case TokenType.CALL:
{
functionDeclarationSignatureDictionary.Clear(); //Clear to avoid key collision
//On CALL get possible procedures and functions in the seeked program
var programs = node.SymbolTable.GetPrograms(userTokenToSeek.Text);
if (programs != null && programs.Any())
{
var procedures =
programs.First()
.SymbolTable.GetFunctions(
f =>
f.Name.StartsWith(userFilterText,
StringComparison.InvariantCultureIgnoreCase) ||
f.VisualQualifiedName.ToString()
.StartsWith(userFilterText, StringComparison.InvariantCultureIgnoreCase),
new List <SymbolTable.Scope>
{
SymbolTable.Scope.Declarations
});
completionItems.AddRange(CompletionFactoryHelpers.CreateCompletionItemsForProcedures(procedures, node, functionDeclarationSignatureDictionary, false));
}
break;
}
case TokenType.TYPE:
{
//On TYPE get possible public types in the seeked program
var programs = node.SymbolTable.GetPrograms(userTokenToSeek.Text);
if (programs != null && programs.Any())
{
var types =
programs.First()
.SymbolTable.GetTypes(
t =>
t.Name.StartsWith(userFilterText,
StringComparison.InvariantCultureIgnoreCase),
new List <SymbolTable.Scope>
{
SymbolTable.Scope.Declarations,
SymbolTable.Scope.Global
});
completionItems.AddRange(CompletionFactoryHelpers.CreateCompletionItemsForType(types, node, false));
}
break;
}
}
}
}
return(completionItems.Distinct());
}
/// <summary>
/// Request to request completion at a given text document position. The request's
/// parameter is of type[TextDocumentPosition](#TextDocumentPosition) the response
/// is of type[CompletionItem[]](#CompletionItem) or a Thenable that resolves to such.
/// </summary>
public override List <CompletionItem> OnCompletion(TextDocumentPosition parameters)
{
var fileCompiler = GetFileCompilerFromStringUri(parameters.uri);
if (fileCompiler == null)
{
return(null);
}
List <CompletionItem> items = new List <CompletionItem>();
if (fileCompiler.CompilationResultsForProgram != null &&
fileCompiler.CompilationResultsForProgram.ProcessedTokensDocumentSnapshot != null)
{
var wrappedCodeElements = CodeElementFinder(fileCompiler, parameters.position);
if (wrappedCodeElements == null)
{
return(new List <CompletionItem>());
}
Token userFilterToken = null;
Token lastSignificantToken = null;
//Try to get a significant token for competion and return the codeelement containing the matching token.
CodeElement matchingCodeElement = CodeElementMatcher.MatchCompletionCodeElement(parameters.position,
wrappedCodeElements,
out userFilterToken, out lastSignificantToken); //Magic happens here
var userFilterText = userFilterToken == null ? string.Empty : userFilterToken.Text;
if (lastSignificantToken != null)
{
AnalyticsWrapper.Telemetry.TrackEvent("[Completion] " + lastSignificantToken.TokenType, EventType.Completion);
switch (lastSignificantToken.TokenType)
{
case TokenType.PERFORM:
{
items.AddRange(CompletionFactory.GetCompletionPerformParagraph(fileCompiler,
matchingCodeElement, userFilterToken));
break;
}
case TokenType.CALL:
{
_FunctionDeclarationSignatureDictionary.Clear(); //Clear to avoid key collision
items.AddRange(CompletionFactory.GetCompletionForProcedure(fileCompiler, matchingCodeElement,
userFilterToken, _FunctionDeclarationSignatureDictionary));
items.AddRange(CompletionFactory.GetCompletionForLibrary(fileCompiler, matchingCodeElement,
userFilterToken));
break;
}
case TokenType.TYPE:
{
items.AddRange(CompletionFactory.GetCompletionForType(fileCompiler, matchingCodeElement,
userFilterToken));
items.AddRange(CompletionFactory.GetCompletionForLibrary(fileCompiler, matchingCodeElement,
userFilterToken));
break;
}
case TokenType.QualifiedNameSeparator:
{
items.AddRange(CompletionFactory.GetCompletionForQualifiedName(parameters.position,
fileCompiler, matchingCodeElement, lastSignificantToken, userFilterToken, _FunctionDeclarationSignatureDictionary));
break;
}
case TokenType.INPUT:
case TokenType.OUTPUT:
case TokenType.IN_OUT:
{
items.AddRange(CompletionFactory.GetCompletionForProcedureParameter(parameters.position,
fileCompiler, matchingCodeElement, userFilterToken, lastSignificantToken, _SignatureCompletionContext));
break;
}
case TokenType.MOVE:
{
items.AddRange(CompletionFactory.GetCompletionForVariable(fileCompiler, matchingCodeElement,
da =>
da.Name.StartsWith(userFilterText, StringComparison.InvariantCultureIgnoreCase) &&
((da.CodeElement != null &&
(da.CodeElement as DataDefinitionEntry).LevelNumber.Value < 88) ||
(da.CodeElement == null && da is IndexDefinition))));
//Ignore 88 level variable
break;
}
case TokenType.TO:
{
items.AddRange(CompletionFactory.GetCompletionForTo(fileCompiler, matchingCodeElement,
userFilterToken, lastSignificantToken));
break;
}
case TokenType.INTO:
{
items.AddRange(CompletionFactory.GetCompletionForVariable(fileCompiler, matchingCodeElement,
v => v.Name.StartsWith(userFilterText, StringComparison.CurrentCultureIgnoreCase) &&
((v.CodeElement as DataDefinitionEntry) != null &&
v.DataType == DataType.Alphabetic ||
v.DataType == DataType.Alphanumeric ||
v.DataType == DataType.AlphanumericEdited)
));
break;
}
case TokenType.SET:
{
items.AddRange(CompletionFactory.GetCompletionForVariable(fileCompiler, matchingCodeElement,
v => v.Name.StartsWith(userFilterText, StringComparison.CurrentCultureIgnoreCase)
&&
(((v.CodeElement as DataDefinitionEntry) != null &&
(v.CodeElement as DataDefinitionEntry).LevelNumber.Value == 88)
//Level 88 Variable
|| v.DataType == DataType.Numeric || //Numeric Integer Variable
v.Usage == DataUsage.Pointer) //Or usage is pointer
));
break;
}
case TokenType.OF:
{
items.AddRange(CompletionFactory.GetCompletionForOf(fileCompiler, matchingCodeElement,
userFilterToken, parameters.position));
break;
}
default:
break;
}
}
else
{
//If no known keyword has been found, let's try to get the context and return available variables.
if (matchingCodeElement == null && wrappedCodeElements.Any())
{
userFilterToken =
wrappedCodeElements.First().ArrangedConsumedTokens.FirstOrDefault(
t =>
parameters.position.character <= t.StopIndex + 1 && parameters.position.character > t.StartIndex &&
t.Line == parameters.position.line + 1 &&
t.TokenType == TokenType.UserDefinedWord); //Get the userFilterToken to filter the results
userFilterText = userFilterToken == null ? string.Empty : userFilterToken.Text; //Convert token to text
items.AddRange(CompletionFactory.GetCompletionForVariable(fileCompiler,
wrappedCodeElements.First(), da => da.Name.StartsWith(userFilterText, StringComparison.InvariantCultureIgnoreCase)));
}
else
{
//Return a default text to inform the user that completion is not available after the given token
items.Add(new CompletionItem("Completion is not available in this context")
{
insertText = ""
});
}
}
if (userFilterToken != null)
{
//Add the range object to let the client know the position of the user filter token
var range = new Range(userFilterToken.Line - 1, userFilterToken.StartIndex,
userFilterToken.Line - 1, userFilterToken.StopIndex + 1);
//-1 on lne to 0 based / +1 on stop index to include the last character
items = items.Select(c =>
{
if (c.data != null && c.data.GetType().IsArray)
{
((object[])c.data)[0] = range;
}
else
{
c.data = range;
}
return(c);
}).ToList();
}
}
return(items);
}