public static IEnumerable <CompletionItem> GetCompletionForType(FileCompiler fileCompiler, CodeElement codeElement, Token userFilterToken)
{
var node = GetMatchingNode(fileCompiler, codeElement);
IEnumerable <TypeDefinition> types = null;
if (node?.SymbolTable != null)
{
var userFilterText = userFilterToken == null ? string.Empty : userFilterToken.Text;
types =
node.SymbolTable.GetTypes(
t => t.Name.StartsWith(userFilterText, StringComparison.InvariantCultureIgnoreCase)
||
(!t.IsFlagSet(Node.Flag.NodeIsIntrinsic) &&
t.VisualQualifiedName.ToString()
.StartsWith(userFilterText, StringComparison.InvariantCultureIgnoreCase)),
new List <SymbolTable.Scope>
{
SymbolTable.Scope.Declarations,
SymbolTable.Scope.Global,
SymbolTable.Scope.Intrinsic,
SymbolTable.Scope.Namespace
});
}
return(CompletionFactoryHelpers.CreateCompletionItemsForType(types, node));
}
public static IEnumerable <CompletionItem> GetCompletionForOfParent(Node node, Token variableNameToken,
string userFilterText)
{
var completionItems = new List <CompletionItem>();
if (node == null)
{
return(completionItems);
}
var currentVariable = node.SymbolTable.GetVariables(
v => v != null && v.Name.Equals(variableNameToken.Text, StringComparison.InvariantCultureIgnoreCase), SymbolTable.Scope.Global)
.FirstOrDefault();
if (currentVariable == null)
{
return(completionItems);
}
var currentParent = currentVariable.Parent as DataDefinition;
if (currentParent != null)
{
completionItems.Add(CompletionFactoryHelpers.CreateCompletionItemForVariable(currentParent));
}
return(completionItems);
}
/// <summary>
/// Get completion Item for a types ADDRESS OF demand.
/// This method will modify the completionItems ref parameter.
/// CompletionItems will be filtered on variables declared in LINKAGE SECTION and with LevelNumber equal to 01 or 77.
/// </summary>
/// <param name="completionItems">Ref to a list of completion items</param>
/// <param name="node">Node found on cursor position</param>
/// <param name="contextToken">ContextToken to select if it's a SET or something else</param>
/// <param name="userFilterText">Variable Name Filter</param>
public static IEnumerable <CompletionItem> GetCompletionForAddressOf(Node node, Token contextToken, string userFilterText)
{
IEnumerable <DataDefinition> potentialVariable = null;
if (node == null)
{
return(new List <CompletionItem>());
}
if (contextToken != null && contextToken.TokenType == TokenType.SET)
{
//Get all the variables in Linkage section with Level 01 or 77 and starting by userFilterText.
potentialVariable = node.SymbolTable.GetVariables(v => v != null &&
v.IsFlagSet(Node.Flag.LinkageSectionNode) &&
v.CodeElement is DataDefinitionEntry &&
(((DataDefinitionEntry)v.CodeElement).LevelNumber.Value == 1 || ((DataDefinitionEntry)v.CodeElement).LevelNumber.Value == 77) &&
v.Name.StartsWith(userFilterText, StringComparison.InvariantCultureIgnoreCase),
SymbolTable.Scope.GlobalStorage);
}
else
{
//Get all the variables from any section with level 01 or 77 and starting by userFilterText.
potentialVariable = node.SymbolTable.GetVariables(
v => v != null &&
v.CodeElement is DataDefinitionEntry &&
(((DataDefinitionEntry)v.CodeElement).LevelNumber.Value == 1 ||
((DataDefinitionEntry)v.CodeElement).LevelNumber.Value == 77) &&
v.Name.StartsWith(userFilterText, StringComparison.InvariantCultureIgnoreCase),
SymbolTable.Scope.GlobalStorage);
}
return(CompletionFactoryHelpers.CreateCompletionItemsForVariables(potentialVariable));
}
private static void SearchVariableInTypesAndLevels(Node node, DataDefinition variable, ref List <CompletionItem> completionItems)
{
var symbolTable = node.SymbolTable;
if (!variable.IsPartOfATypeDef) //Variable is not comming from a type.
{
if (symbolTable.GetVariablesExplicit(new URI(variable.Name)).Any()) //Check if this variable is present locally.
{
completionItems.Add(CompletionFactoryHelpers.CreateCompletionItemForVariable(variable));
}
}
else
{
if (symbolTable.TypesReferences != null) //We are in a typedef, get references of this type
{
var type = variable.ParentTypeDefinition;
IEnumerable <DataDefinition> references = null;
references = symbolTable.TypesReferences.Where(t => t.Key == type).SelectMany(r => r.Value);
foreach (var reference in references)
{
if (symbolTable.GetVariablesExplicit(new URI(reference.Name)).Any()) //Check if this variable is present locally. If not just ignore it
{
if (reference.ParentTypeDefinition == null) //Check if the variable is inside a typedef or not, if not it's a final varaible
{
var referenceArrangedQualifiedName = string.Join("::", reference.VisualQualifiedName.ToString().Split(reference.VisualQualifiedName.Separator).Skip(1)); //Skip Program Name
var finalQualifiedName = string.Format("{0}::{1}", referenceArrangedQualifiedName, variable.VisualQualifiedName.Head);
var variableDisplay = string.Format("{0} ({1}) ({2})", variable.Name, variable.DataType.Name, finalQualifiedName);
completionItems.Add(new CompletionItem(variableDisplay)
{
insertText = finalQualifiedName, kind = CompletionItemKind.Variable
});
}
else //If the reference is always in a typedef, let's loop and ride up until we are in a final variable
{
var tempCompletionItems = new List <CompletionItem>();
SearchVariableInTypesAndLevels(node, reference, ref tempCompletionItems);
if (tempCompletionItems.Count > 0)
{
foreach (var tempComp in tempCompletionItems)
{
tempComp.insertText += "::" + variable.VisualQualifiedName.Head;
tempComp.label = string.Format("{0} ({1}) ({2})", variable.Name, variable.DataType.Name, tempComp.insertText);
completionItems.Add(tempComp);
}
}
}
}
}
}
}
}
public static IEnumerable <CompletionItem> GetCompletionForProcedure(FileCompiler fileCompiler, CodeElement codeElement, Token userFilterToken, Dictionary <SignatureInformation, FunctionDeclaration> functionDeclarationSignatureDictionary)
{
var node = GetMatchingNode(fileCompiler, codeElement);
IEnumerable <FunctionDeclaration> procedures = null;
IEnumerable <DataDefinition> variables = null;
var completionItems = new List <CompletionItem>();
if (node != null)
{
if (node.SymbolTable != null)
{
var userFilterText = userFilterToken == null ? string.Empty : userFilterToken.Text;
procedures =
node.SymbolTable.GetFunctions(
f =>
f.VisualQualifiedName.ToString()
.StartsWith(userFilterText, StringComparison.InvariantCultureIgnoreCase) ||
f.Name.StartsWith(userFilterText, StringComparison.InvariantCultureIgnoreCase),
new List <SymbolTable.Scope>
{
SymbolTable.Scope.Declarations,
SymbolTable.Scope.Intrinsic,
SymbolTable.Scope.Namespace
});
variables = node.SymbolTable.GetVariables(da => da.Picture != null &&
da.DataType ==
Compiler.CodeElements.DataType.Alphanumeric &&
da.Name.StartsWith(userFilterText,
StringComparison.InvariantCultureIgnoreCase),
new List <SymbolTable.Scope> {
SymbolTable.Scope.Declarations, SymbolTable.Scope.Global
});
}
}
completionItems.AddRange(CompletionFactoryHelpers.CreateCompletionItemsForProcedures(procedures, node, functionDeclarationSignatureDictionary));
foreach (var variable in variables)
{
var completionItem = new CompletionItem(string.Format("{0}", variable.Name));
completionItem.insertText = variable.Name;
completionItem.kind = CompletionItemKind.Variable;
completionItems.Add(completionItem);
}
return(completionItems);
}
public static IEnumerable <CompletionItem> GetCompletionForVariable(FileCompiler fileCompiler, CodeElement codeElement, Expression <Func <DataDefinition, bool> > predicate)
{
var completionItems = new List <CompletionItem>();
var node = GetMatchingNode(fileCompiler, codeElement);
if (node == null)
{
return(completionItems);
}
var variables = node.SymbolTable.GetVariables(predicate, SymbolTable.Scope.GlobalStorage);
completionItems.AddRange(CompletionFactoryHelpers.CreateCompletionItemsForVariables(variables));
return(completionItems);
}
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());
}
public static IEnumerable <CompletionItem> GetCompletionForProcedureParameter(Position position, FileCompiler fileCompiler, CodeElement codeElement, Token userFilterToken, Token lastSignificantToken, FunctionDeclaration procedureSignatureContext)
{
var completionItems = new List <CompletionItem>();
var arrangedCodeElement = codeElement as CodeElementWrapper;
var node = GetMatchingNode(fileCompiler, codeElement);
var userFilterText = userFilterToken == null ? string.Empty : userFilterToken.Text;
//Get procedure name or qualified name
string procedureName = CompletionFactoryHelpers.GetProcedureNameFromTokens(arrangedCodeElement?.ArrangedConsumedTokens);
IEnumerable <FunctionDeclaration> calledProcedures = null;
if (procedureSignatureContext == null ||
!(procedureSignatureContext.QualifiedName.ToString().Equals(procedureName, StringComparison.InvariantCultureIgnoreCase) ||
procedureSignatureContext.Name.Equals(procedureName, StringComparison.InvariantCultureIgnoreCase)))
{
//Try to get procedure by its name
calledProcedures =
node.SymbolTable.GetFunctions(
p =>
p.Name.Equals(procedureName) ||
p.VisualQualifiedName.ToString().Equals(procedureName), new List <SymbolTable.Scope>
{
SymbolTable.Scope.Declarations,
SymbolTable.Scope.Intrinsic,
SymbolTable.Scope.Namespace
});
}
else
{
//If the procedure name is equivalent to the signature selected by signature help, we can assume the user is always on the same procedure.
calledProcedures = new List <FunctionDeclaration> {
procedureSignatureContext
};
}
var alreadyGivenTokens = arrangedCodeElement?.ArrangedConsumedTokens
.SkipWhile(t => t != lastSignificantToken).Skip(1)
.TakeWhile(t => t.TokenType != TokenType.OUTPUT && t.TokenType != TokenType.IN_OUT)
.Except(new List <Token>()
{
userFilterToken
})
.Where(t => (t.StartIndex < position.character && t.Line == position.line + 1) || t.Line < position.line + 1);
int alreadyGivenParametersCount = 0;
TokenType?previousTokenType = null;
//Loop that allows to ignore qualified name parameters.
if (alreadyGivenTokens != null)
{
foreach (var givenToken in alreadyGivenTokens)
{
if (givenToken.TokenType == TokenType.UserDefinedWord && (previousTokenType == null || previousTokenType.Value == TokenType.UserDefinedWord))
{
alreadyGivenParametersCount++;
}
previousTokenType = givenToken.TokenType;
}
}
IEnumerable <DataDefinition> potentialVariablesForCompletion = null;
foreach (var procedure in calledProcedures)
{
IEnumerable <ParameterDescription> procParams = null;
//Switch to select the correct parameters profile
#region Selective parameters Switch
switch (lastSignificantToken.TokenType)
{
case TokenType.INPUT:
{
procParams = procedure.Profile.InputParameters;
break;
}
case TokenType.OUTPUT:
{
procParams = procedure.Profile.OutputParameters;
break;
}
case TokenType.IN_OUT:
{
procParams = procedure.Profile.InoutParameters;
break;
}
default:
procParams = new List <ParameterDescription>();
break;
}
#endregion
//If the user already written all or more parameters than required let's check for an other proc signature
if (alreadyGivenParametersCount >= procParams.Count())
{
continue;
}
//Else see which parameter could be filled
var parameterToFill = procParams.ToArray()[alreadyGivenParametersCount];
//Get local/global variable that could correspond to the parameter
potentialVariablesForCompletion = node.SymbolTable.GetVariablesByType(parameterToFill.DataType, potentialVariablesForCompletion, new List <SymbolTable.Scope> {
SymbolTable.Scope.Declarations, SymbolTable.Scope.Global
});
}
if (potentialVariablesForCompletion == null)
{
return(completionItems);
}
foreach (var potentialVariable in potentialVariablesForCompletion.Where(v => v.Name.StartsWith(userFilterText, StringComparison.InvariantCultureIgnoreCase)).Distinct())
{
SearchVariableInTypesAndLevels(node, potentialVariable, ref completionItems); //Add potential variables to completionItems
}
return(completionItems);
}
public override SignatureHelp OnSignatureHelp(TextDocumentPosition parameters)
{
AnalyticsWrapper.Telemetry.TrackEvent("[SignatureHelp]", EventType.Completion); //Send event to analytics
var fileCompiler = GetFileCompilerFromStringUri(parameters.uri);
if (fileCompiler?.CompilationResultsForProgram?.ProcessedTokensDocumentSnapshot == null) //Semantic snapshot is not available
{
return(null);
}
var wrappedCodeElement = CodeElementFinder(fileCompiler, parameters.position).FirstOrDefault();
if (wrappedCodeElement == null) //No codeelements found
{
return(null);
}
var node = CompletionFactory.GetMatchingNode(fileCompiler, wrappedCodeElement);
//Get procedure name or qualified name
string procedureName = CompletionFactoryHelpers.GetProcedureNameFromTokens(wrappedCodeElement.ArrangedConsumedTokens);
//Try to get procedure by its name
var calledProcedures =
node.SymbolTable.GetFunctions(
p =>
p.Name.Equals(procedureName) ||
p.QualifiedName.ToString().Equals(procedureName), new List <SymbolTable.Scope>
{
SymbolTable.Scope.Declarations,
SymbolTable.Scope.Intrinsic,
SymbolTable.Scope.Namespace
});
var signatureHelp = new SignatureHelp();
if (calledProcedures == null)
{
return(null);
}
if (calledProcedures.Count() == 1)
{
var calledProcedure = calledProcedures.First();
//Create and return SignatureHelp object
signatureHelp.signatures = new SignatureInformation[1];
signatureHelp.signatures[0] = ProcedureSignatureHelper.SignatureHelperSignatureFormatter(calledProcedure);
signatureHelp.activeSignature = 0; //Set the active signature as the one just created
//Select the current parameter the user is expecting
signatureHelp.activeParameter = ProcedureSignatureHelper.SignatureHelperParameterSelecter(calledProcedure, wrappedCodeElement, parameters.position);
//There is only one possibility so the context can be set right now
_SignatureCompletionContext = calledProcedure;
return(signatureHelp);
}
//Else try to find the best matching signature
//Get all given INPUT
var givenInputParameters = CompletionFactoryHelpers.AggregateTokens(
wrappedCodeElement.ArrangedConsumedTokens.SkipWhile(t => t.TokenType != TokenType.INPUT)
.Skip(1) //Ignore the INPUT Token
.TakeWhile(t => !(t.TokenType == TokenType.OUTPUT || t.TokenType == TokenType.IN_OUT))).ToList();
//Get all given OUTPUT
var givenOutputParameters = CompletionFactoryHelpers.AggregateTokens(
wrappedCodeElement.ArrangedConsumedTokens.SkipWhile(t => t.TokenType != TokenType.OUTPUT)
.Skip(1) //Ignore the INPUT Token
.TakeWhile(t => !(t.TokenType == TokenType.INPUT || t.TokenType == TokenType.IN_OUT))).ToList();
//Get all given INOUT
var givenInoutParameters = CompletionFactoryHelpers.AggregateTokens(
wrappedCodeElement.ArrangedConsumedTokens.SkipWhile(t => t.TokenType != TokenType.IN_OUT)
.Skip(1) //Ignore the INPUT Token
.TakeWhile(t => !(t.TokenType == TokenType.OUTPUT || t.TokenType == TokenType.INPUT))).ToList();
var totalGivenParameters = givenInputParameters.Count + givenInoutParameters.Count + givenOutputParameters.Count;
var signatureInformation = new List <SignatureInformation>();
_FunctionDeclarationSignatureDictionary.Clear();
FunctionDeclaration bestmatchingProcedure = null;
int previousMatchingWeight = 0, selectedSignatureIndex = 0;
if (totalGivenParameters == 0)
{
foreach (var procedure in calledProcedures) //No parameters given, return all possibilities
{
var formattedSignatureInformation = ProcedureSignatureHelper.SignatureHelperSignatureFormatter(procedure);
signatureInformation.Add(formattedSignatureInformation);
_FunctionDeclarationSignatureDictionary.Add(formattedSignatureInformation, procedure);
}
}
else
{
foreach (var procedure in calledProcedures)
{
//The commented parts allow to restrict the potential compatible signature to return to the client
int matchingWeight = 0;
//Test INPUT parameters
matchingWeight = matchingWeight + ProcedureSignatureHelper.ParametersTester(procedure.Profile.InputParameters, givenInputParameters, node);
//Test OUTPUT parameters
matchingWeight = matchingWeight + ProcedureSignatureHelper.ParametersTester(procedure.Profile.OutputParameters, givenOutputParameters, node);
//Test INOUT parameters
matchingWeight = matchingWeight + ProcedureSignatureHelper.ParametersTester(procedure.Profile.InoutParameters, givenInoutParameters, node);
if (matchingWeight > 0 && matchingWeight >= previousMatchingWeight && totalGivenParameters > 0)
{
if (matchingWeight > previousMatchingWeight)
{
signatureInformation.Clear(); //If the matchingWeight is superior than previous, it means that the previous signature is not precise enough.
}
var formattedSignatureInformation = ProcedureSignatureHelper.SignatureHelperSignatureFormatter(procedure);
signatureInformation.Add(formattedSignatureInformation);
_FunctionDeclarationSignatureDictionary.Add(formattedSignatureInformation, procedure);
previousMatchingWeight = matchingWeight;
bestmatchingProcedure = procedure;
}
selectedSignatureIndex++;
}
}
signatureHelp.signatures = signatureInformation.ToArray();
if (signatureInformation.Count == 1)
{
_SignatureCompletionContext = bestmatchingProcedure; //Set the completion context
signatureHelp.activeSignature = 0; //Select the only signature for the client
signatureHelp.activeParameter = ProcedureSignatureHelper.SignatureHelperParameterSelecter(bestmatchingProcedure, wrappedCodeElement, parameters.position); //Select the current parameter
}
return(signatureHelp);
}
public static IEnumerable <CompletionItem> GetCompletionForProcedureParameter(Position position, FileCompiler fileCompiler, CodeElement codeElement, Token userFilterToken, Token lastSignificantToken, FunctionDeclaration procedureSignatureContext)
{
var completionItems = new List <CompletionItem>();
var arrangedCodeElement = codeElement as CodeElementWrapper;
var node = GetMatchingNode(fileCompiler, codeElement);
if (node == null)
{
return(completionItems);
}
var userFilterText = userFilterToken == null ? string.Empty : userFilterToken.Text;
//Get procedure name or qualified name
string procedureName = CompletionFactoryHelpers.GetProcedureNameFromTokens(arrangedCodeElement?.ArrangedConsumedTokens);
IEnumerable <FunctionDeclaration> calledProcedures = null;
if (procedureSignatureContext == null ||
!(procedureSignatureContext.QualifiedName.ToString().Equals(procedureName, StringComparison.InvariantCultureIgnoreCase) ||
procedureSignatureContext.Name.Equals(procedureName, StringComparison.InvariantCultureIgnoreCase)))
{
//Try to get procedure by its name
calledProcedures =
node.SymbolTable.GetFunctions(
p =>
p.Name.Equals(procedureName, StringComparison.InvariantCultureIgnoreCase) ||
p.VisualQualifiedName.ToString().Equals(procedureName, StringComparison.InvariantCultureIgnoreCase),
SymbolTable.Scope.Intrinsic
);
}
else
{
//If the procedure name is equivalent to the signature selected by signature help, we can assume the user is always on the same procedure.
calledProcedures = new List <FunctionDeclaration> {
procedureSignatureContext
};
}
var alreadyGivenTokens = arrangedCodeElement?.ArrangedConsumedTokens
.SkipWhile(t => t != lastSignificantToken).Skip(1)
.TakeWhile(t => t.TokenType != TokenType.OUTPUT && t.TokenType != TokenType.IN_OUT)
.Except(new List <Token>()
{
userFilterToken
})
.Where(t => (t.StartIndex < position.character && t.Line == position.line + 1) || t.Line < position.line + 1);
int alreadyGivenParametersCount = 0;
TokenType?previousTokenType = null;
//Loop that allows to ignore qualified name parameters.
if (alreadyGivenTokens != null)
{
foreach (var givenToken in alreadyGivenTokens)
{
if (givenToken.TokenType == TokenType.UserDefinedWord && (previousTokenType == null || previousTokenType.Value == TokenType.UserDefinedWord))
{
alreadyGivenParametersCount++;
}
previousTokenType = givenToken.TokenType;
}
}
IEnumerable <DataDefinition> potentialVariablesForCompletion = null;
int maxInput = -1;
int maxInOut = -1;
bool allProcsHaveInOutParams = true;
bool noProcsHaveInOutParams = true;
bool allProcsHaveOutputParams = true;
foreach (var procedure in calledProcedures)
{
IEnumerable <ParameterDescription> procParams;
//Switch to select the correct parameters profile
#region Selective parameters Switch
switch (lastSignificantToken.TokenType)
{
case TokenType.INPUT:
{
procParams = procedure.Profile.InputParameters;
//Get number of input parameters left per procedure
break;
}
case TokenType.OUTPUT:
{
procParams = procedure.Profile.OutputParameters;
break;
}
case TokenType.IN_OUT:
{
procParams = procedure.Profile.InoutParameters;
//Get number of inout parameters left per procedure
break;
}
default:
procParams = new List <ParameterDescription>();
break;
}
#endregion
if (procedure.Profile.InputParameters.Count > maxInput)
{
maxInput = procedure.Profile.InputParameters.Count;
}
if (procedure.Profile.InoutParameters.Count > maxInOut)
{
maxInOut = procedure.Profile.InoutParameters.Count;
}
if (procedure.Profile.InoutParameters.Count == 0)
{
allProcsHaveInOutParams = false;
}
else
{
noProcsHaveInOutParams = false;
}
if (procedure.Profile.OutputParameters.Count == 0)
{
allProcsHaveOutputParams = false;
}
//If the user already written all or more parameters than required let's check for an other proc signature
if (alreadyGivenParametersCount >= procParams.Count())
{
continue;
}
//Else see which parameter could be filled
var parameterToFill = procParams.ToArray()[alreadyGivenParametersCount];
//Get local/global variable that could correspond to the parameter
potentialVariablesForCompletion = node.SymbolTable.GetVariablesByType(parameterToFill.DataType, potentialVariablesForCompletion, SymbolTable.Scope.GlobalStorage);
}
if (potentialVariablesForCompletion == null)
{
return(completionItems);
}
foreach (var potentialVariable in potentialVariablesForCompletion.Where(v => v.Name.StartsWith(userFilterText, StringComparison.InvariantCultureIgnoreCase)).Distinct())
{
SearchVariableInTypesAndLevels(node, potentialVariable, ref completionItems); //Add potential variables to completionItems*
}
//If signature of procedure is available
if (procedureSignatureContext != null)
{
//Add IN-OUT or OUTPUT after INPUT ?
if (lastSignificantToken.TokenType == TokenType.INPUT &&
alreadyGivenParametersCount == (procedureSignatureContext.Profile.InputParameters.Count - 1))
{
if (procedureSignatureContext.Profile.InoutParameters.Count != 0)
{
AddIn_OutSuffixToCompletionItems(lastSignificantToken, completionItems);
}
else if (procedureSignatureContext.Profile.OutputParameters.Count != 0)
{
AddOutputSuffixToCompletionItems(lastSignificantToken, completionItems);
}
}
//Add OUTPUT after IN-OUT ?
else if (lastSignificantToken.TokenType == TokenType.IN_OUT &&
alreadyGivenParametersCount == (procedureSignatureContext.Profile.InoutParameters.Count - 1) &&
procedureSignatureContext.Profile.OutputParameters.Count != 0)
{
AddOutputSuffixToCompletionItems(lastSignificantToken, completionItems);
}
}
else
{
//Add IN-OUT or OUTPUT after INPUT ?
//If we reach the last INPUT parameter
if (lastSignificantToken.TokenType == TokenType.INPUT && alreadyGivenParametersCount == maxInput - 1)
{
//If all procs have IN-OUT params
if (allProcsHaveInOutParams)
{
AddIn_OutSuffixToCompletionItems(lastSignificantToken, completionItems);
}
//If no procedures have IN-OUT params and all have OUTPUT params
else if (noProcsHaveInOutParams && allProcsHaveOutputParams)
{
AddOutputSuffixToCompletionItems(lastSignificantToken, completionItems);
}
//Otherwise we cannot choose between IN-OUT, OUTPUT and nothing, so we choose nothing and let the user add the good keyword manually.
//#908 will change this behavior by asking for the signature context
}
//Add OUTPUT after IN-OUT ?
else if (lastSignificantToken.TokenType == TokenType.IN_OUT && alreadyGivenParametersCount == (maxInOut - 1))
{
//If all procedures have OUTPUT parameter
if (allProcsHaveOutputParams)
{
AddOutputSuffixToCompletionItems(lastSignificantToken, completionItems);
}
}
}
return(completionItems);
}