private Expression BuildIndex(IIndexExpressionNode indexer)
{
if (indexer.Object == null)
{
throw BindingExceptionManager.UnexpectedExpressionNode(indexer);
}
var target = BuildExpression(indexer.Object);
if (target.Type.IsArray)
{
return(Expression.ArrayIndex(target, indexer.Arguments.Select(BuildExpression)));
}
var type = GetTargetType(ref target);
var targetData = new ArgumentData(indexer.Object, target, type, target == null);
var args = indexer
.Arguments
.ToArrayEx(node => new ArgumentData(node, node.NodeType == ExpressionNodeType.Lambda ? null : BuildExpression(node), null, false));
var exp = TryGenerateMethodCall(targetData.FindIndexer(args, target == null), targetData, args);
if (exp != null)
{
return(exp);
}
var arrayArgs = new Expression[args.Length];
for (int i = 0; i < args.Length; i++)
{
var data = args[i];
if (data.IsLambda || data.Expression == null)
{
throw BindingExceptionManager.InvalidBindingMember(type, ReflectionExtensions.IndexerName);
}
arrayArgs[i] = ExpressionReflectionManager.ConvertIfNeed(data.Expression, typeof(object), false);
}
return(Expression.Call(GetIndexValueDynamicMethod,
ExpressionReflectionManager.ConvertIfNeed(target, typeof(object), false),
Expression.NewArrayInit(typeof(object), arrayArgs), Expression.Constant(new MethodInvoker()), DataContextParameter));
}
private Expression BuildIndex(IIndexExpressionNode indexer)
{
if (indexer.Object == null)
{
throw BindingExceptionManager.UnexpectedExpressionNode(indexer);
}
var target = BuildExpression(indexer.Object);
if (target.Type.IsArray)
{
return(Expression.ArrayIndex(target, indexer.Arguments.Select(BuildExpression)));
}
var type = GetTargetType(ref target);
var targetData = new ArgumentData(indexer.Object, target, type);
var args = indexer
.Arguments
.ToArrayEx(node => new ArgumentData(node, node.NodeType == ExpressionNodeType.Lambda ? null : BuildExpression(node), null));
var method = targetData.FindIndexer(args, target == null);
return(GenerateMethodCall(method, targetData, args));
}
