/// <summary>
/// Handles the case where auto-complete is invoked directly in an
/// object literal expression with no type information.
/// I.e. calling a function with an object literal as an expression.
/// Func(
/// {
/// ...Typing here
/// }
/// );
/// </summary>
public static IEnumerable<ISymbol> CreateSymbolsFromObjectLiteralExpression(CompletionState completionState, INode completionNode)
{
var objectLiteralExpression = completionNode.Cast<IObjectLiteralExpression>();
var contextualType = completionState.TypeChecker.GetContextualType(objectLiteralExpression);
if (contextualType != null)
{
var objectLiteralTypes = AutoCompleteHelpers.ExpandUnionAndBaseInterfaceTypes(contextualType);
return GetRemainingPropertiesForObjectLiteral(objectLiteralExpression, objectLiteralTypes, completionState.TypeChecker);
}
return null;
}
/// <summary>
/// Gets any properties that haven't yet been filled in for an object literal
/// </summary>
public static IEnumerable<ISymbol> GetRemainingPropertiesForObjectLiteral(IObjectLiteralExpression objectLiteralExpression, IEnumerable<IType> types, ITypeChecker typeChecker)
{
if (objectLiteralExpression?.Properties?.Elements == null)
{
return Enumerable.Empty<ISymbol>();
}
var propertiesThatAlreadyAreSet = new HashSet<string>(
objectLiteralExpression.Properties.Elements
.Select(property => property.As<IPropertyAssignment>()?.Name?.Text)
.Where(name => name != null));
var allPossibleSymbols = AutoCompleteHelpers.GetSymbolsFromTypes(typeChecker, types);
Contract.Assert(allPossibleSymbols != null);
return allPossibleSymbols.Where(symbol => !propertiesThatAlreadyAreSet.Contains(symbol.Name));
}
