public override object VisitTypeOfExpression([NotNull] DoshikParser.TypeOfExpressionContext context)
{
SetWholeExpression(context);
VisitChildren(context);
_compilationContext.SetParsingAntlrContext(context);
var node = new TypeOfExpressionNode(context);
var foundType = GetTypeNameVisitor.Apply(_compilationContext, context.typeOf().typeType());
foundType.ThrowIfNotFound(_compilationContext);
node.Type = foundType.DataType;
Sequence.Sequence.Add(node);
return(null);
}
private IExpression HandleTypeOfExpressionNode(TypeOfExpressionNode node)
{
if (!node.Type.ExternalType.DeclaredAsTypeNode)
{
throw _compilationContext.ThrowCompilationError("specified type cannot be used in typeof() operator");
}
var result = new ConstantValueExpression();
var constant = Constant.CreateAsDotnetTypeString(node.Type.ExternalType.DotnetTypeString, _compilationContext.TypeLibrary);
result.ValueType = constant.Type;
result.DotnetTypeString = constant.DotnetTypeString;
_compilationContext.CompilationUnit.AddConstant(constant);
result.ReturnOutputSlot = new ExpressionSlot(result.ValueType, result);
return(result);
}