public static IEnumerable <PapyrusSymbol> GetKnownParameterValueSymbols(this FunctionCallExpressionNode functionCallExpression, int parameterIndex, out bool valuesAreValidExclusively)
{
valuesAreValidExclusively = false;
var definedFunction = functionCallExpression.GetDefinition();
var parameterDefinition = functionCallExpression.GetParameterDefinition(parameterIndex);
#if FALLOUT4
if (parameterDefinition != null)
{
var parameterTypeName = parameterDefinition.TypeIdentifier.Text;
if (parameterTypeName.CaseInsensitiveEquals("CustomEventName"))
{
valuesAreValidExclusively = true;
return(GetKnownEventParameterSymbols <CustomEventSymbol>(functionCallExpression, parameterIndex));
}
if (parameterTypeName.CaseInsensitiveEquals("ScriptEventName"))
{
valuesAreValidExclusively = true;
return(GetKnownEventParameterSymbols <EventSymbol>(functionCallExpression, parameterIndex));
}
var functionName = definedFunction.Header.Identifier.Text;
if (functionName.CaseInsensitiveEquals("FindStruct") || functionName.CaseInsensitiveEquals("RFindStruct"))
{
if (parameterDefinition.Identifier.Text.CaseInsensitiveEquals("asVarName"))
{
valuesAreValidExclusively = true;
var definedFunctionScriptSymbol = definedFunction.Symbol.Script;
var elementTypeId = definedFunctionScriptSymbol.SyntheticArrayType?.ElementType;
if (elementTypeId.HasValue)
{
if (functionCallExpression.GetTypeChecker().GetTypeForObjectId(elementTypeId.Value) is StructType elementType)
{
return(elementType.Symbol.Children);
}
}
return(Enumerable.Empty <PapyrusSymbol>());
}
}
}
#endif
if (definedFunction.Symbol.Name.CaseInsensitiveEquals("GotoState"))
{
var expressionForScriptType = functionCallExpression.GetMemberAccessExpression()?.BaseExpression;
var scriptType = expressionForScriptType?.GetTypeOfExpression() as ScriptType ?? functionCallExpression.Script.Symbol.GetPapyrusType() as ScriptType;
return(scriptType.Symbol.GetExtendedScriptChain(true).
SelectMany(scriptSymbol => scriptSymbol.Children.OfType <StateSymbol>()).
DistinctBy(s => s.Name.ToLower()).ToArray());
}
return(Enumerable.Empty <PapyrusSymbol>());
}
public static int GetFunctionParameterIndexAtPosition(this FunctionCallExpressionNode functionCallExpression, Position position)
{
var intersectingParameterIndex = 0;
// Here, we're making the parameter node ranges contiguous
var parameterRanges = new List <Range>();
for (var i = 0; i < functionCallExpression.Parameters.Count; i++)
{
var range = functionCallExpression.Parameters[i].Range;
if (i > 0)
{
var previousParameterEnd = functionCallExpression.Parameters[i - 1].Range.End;
range = new Range()
{
Start = new Position()
{
Line = previousParameterEnd.Line,
Character = previousParameterEnd.Character + 1
},
End = new Position()
{
Line = range.End.Line,
Character = range.End.Character + 1
}
};
}
parameterRanges.Add(range);
}
var intersectingRange = parameterRanges.LastOrDefault(r => position >= r.Start);
intersectingParameterIndex = parameterRanges.IndexOf(intersectingRange);
// If we're intersecting a named call parameter, we want to adjust the index to match the actual signature index.
var intersectingCallParameter = functionCallExpression.Parameters.ElementAtOrDefault(intersectingParameterIndex);
if (intersectingCallParameter != null)
{
if (intersectingCallParameter.Identifier != null)
{
var parameterDefinition = intersectingCallParameter.GetParameterDefinition();
return(functionCallExpression.GetDefinition().Header.Parameters.IndexOf(parameterDefinition));
}
}
if (intersectingParameterIndex == -1)
{
intersectingParameterIndex = 0;
}
return(intersectingParameterIndex);
}
public static FunctionParameterNode GetParameterDefinition(this FunctionCallExpressionNode callExpression, int parameterIndex)
{
var functionDefinition = callExpression.GetDefinition();
if (functionDefinition == null)
{
return(null);
}
return(functionDefinition.Header.Parameters.ElementAtOrDefault(parameterIndex));
}