public static ValueReference CreateIndexerValueReference(MdbEvaluationContext ctx, TargetObject target, TargetObject[] index)
{
TargetFundamentalObject mstr = target as TargetFundamentalObject;
if (mstr != null && mstr.TypeName == "string")
{
// Special case for strings
string name = "[" + ctx.Evaluator.TargetObjectToExpression(ctx, index[0]) + "]";
string val = (string)mstr.GetObject(ctx.Thread);
object oo = ctx.Adapter.TargetObjectToObject(ctx, index[0]);
int idx = (int)Convert.ChangeType(oo, typeof(int));
return(LiteralValueReference.CreateObjectLiteral(ctx, name, val [idx]));
}
TargetStructObject sob = target as TargetStructObject;
if (sob == null)
{
return(null);
}
TargetPropertyInfo indexerProp = null;
foreach (MemberReference mem in ObjectUtil.GetTypeMembers(ctx, target.Type, false, true, true, BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.Static))
{
if (mem.Member.IsStatic)
{
continue;
}
if (mem.Member is TargetPropertyInfo)
{
TargetPropertyInfo prop = (TargetPropertyInfo)mem.Member;
if (prop.CanRead && prop.Getter.ParameterTypes.Length == 1)
{
indexerProp = prop;
break;
}
}
}
if (indexerProp != null)
{
return(new IndexerValueReference(ctx, sob, index, indexerProp));
}
else
{
return(null);
}
}
public override ValueReference Evaluate(EvaluationContext ctx, string exp, object expectedType)
{
var asType = expectedType as Type;
if (asType == null)
{
// Cannot do anything.
}
else if (asType == typeof(string))
{
exp = VSCodeObjectSource.Unquote(exp);
return(LiteralValueReference.CreateObjectLiteral(ctx, exp, exp));
}
else if (asType.IsPrimitive)
{
return(LiteralValueReference.CreateObjectLiteral(ctx, exp, exp));
}
return(base.Evaluate(ctx, exp, expectedType));
}