public override ITypedValue GetValueInternal(ExpressionState state)
{
// Possible optimization here if we cache the discovered type reference, but can we do that?
var typeName = (string)_children[0].GetValueInternal(state).Value;
if (typeName == null)
{
throw new InvalidOperationException("No type name");
}
if (!typeName.Contains(".") && char.IsLower(typeName[0]))
{
var tc = SpelTypeCode.ForName(typeName.ToUpper());
if (tc != SpelTypeCode.OBJECT)
{
// It is a primitive type
var atype = MakeArrayIfNecessary(tc.Type);
_exitTypeDescriptor = TypeDescriptor.TYPE;
_type = atype;
return(new TypedValue(atype));
}
}
var clazz = state.FindType(typeName);
clazz = MakeArrayIfNecessary(clazz);
_exitTypeDescriptor = TypeDescriptor.TYPE;
_type = clazz;
return(new TypedValue(clazz));
}
private TypedValue CreateArray(ExpressionState state)
{
// First child gives us the array type which will either be a primitive or reference type
var intendedArrayType = GetChild(0).GetValue(state);
if (intendedArrayType is not string)
{
throw new SpelEvaluationException(
GetChild(0).StartPosition,
SpelMessage.TYPE_NAME_EXPECTED_FOR_ARRAY_CONSTRUCTION,
FormatHelper.FormatClassNameForMessage(intendedArrayType?.GetType()));
}
var type = (string)intendedArrayType;
Type componentType;
var arrayTypeCode = SpelTypeCode.ForName(type);
if (arrayTypeCode == SpelTypeCode.OBJECT)
{
componentType = state.FindType(type);
}
else
{
componentType = arrayTypeCode.Type;
}
object newArray;
if (!HasInitializer)
{
// Confirm all dimensions were specified (for example [3][][5] is missing the 2nd dimension)
if (_dimensions != null)
{
foreach (var dimension in _dimensions)
{
if (dimension == null)
{
throw new SpelEvaluationException(StartPosition, SpelMessage.MISSING_ARRAY_DIMENSION);
}
}
}
else
{
throw new SpelEvaluationException(StartPosition, SpelMessage.MISSING_ARRAY_DIMENSION);
}
var typeConverter = state.EvaluationContext.TypeConverter;
// Shortcut for 1 dimensional
if (_dimensions.Length == 1)
{
var o = _dimensions[0].GetTypedValue(state);
var arraySize = ExpressionUtils.ToInt(typeConverter, o);
newArray = Array.CreateInstance(componentType, arraySize);
}
else
{
// Multi-dimensional - hold onto your hat!
var dims = new int[_dimensions.Length];
for (var d = 0; d < _dimensions.Length; d++)
{
var o = _dimensions[d].GetTypedValue(state);
dims[d] = ExpressionUtils.ToInt(typeConverter, o);
}
newArray = Array.CreateInstance(componentType, dims);
}
}
else
{
// There is an initializer
if (_dimensions == null || _dimensions.Length > 1)
{
// There is an initializer but this is a multi-dimensional array (e.g. new int[][]{{1,2},{3,4}}) - this
// is not currently supported
throw new SpelEvaluationException(StartPosition, SpelMessage.MULTIDIM_ARRAY_INITIALIZER_NOT_SUPPORTED);
}
var typeConverter = state.EvaluationContext.TypeConverter;
var initializer = (InlineList)GetChild(1);
// If a dimension was specified, check it matches the initializer length
if (_dimensions[0] != null)
{
var dValue = _dimensions[0].GetTypedValue(state);
var i = ExpressionUtils.ToInt(typeConverter, dValue);
if (i != initializer.ChildCount)
{
throw new SpelEvaluationException(StartPosition, SpelMessage.INITIALIZER_LENGTH_INCORRECT);
}
}
// Build the array and populate it
var arraySize = initializer.ChildCount;
newArray = Array.CreateInstance(componentType, arraySize);
if (arrayTypeCode == SpelTypeCode.OBJECT)
{
PopulateReferenceTypeArray(state, newArray, typeConverter, initializer, componentType);
}
else if (arrayTypeCode == SpelTypeCode.BOOLEAN)
{
PopulateBooleanArray(state, newArray, typeConverter, initializer);
}
else if (arrayTypeCode == SpelTypeCode.BYTE)
{
PopulateByteArray(state, newArray, typeConverter, initializer);
}
else if (arrayTypeCode == SpelTypeCode.SBYTE)
{
PopulateSByteArray(state, newArray, typeConverter, initializer);
}
else if (arrayTypeCode == SpelTypeCode.CHAR)
{
PopulateCharArray(state, newArray, typeConverter, initializer);
}
else if (arrayTypeCode == SpelTypeCode.DOUBLE)
{
PopulateDoubleArray(state, newArray, typeConverter, initializer);
}
else if (arrayTypeCode == SpelTypeCode.FLOAT)
{
PopulateFloatArray(state, newArray, typeConverter, initializer);
}
else if (arrayTypeCode == SpelTypeCode.INT)
{
PopulateIntArray(state, newArray, typeConverter, initializer);
}
else if (arrayTypeCode == SpelTypeCode.UINT)
{
PopulateUIntArray(state, newArray, typeConverter, initializer);
}
else if (arrayTypeCode == SpelTypeCode.LONG)
{
PopulateLongArray(state, newArray, typeConverter, initializer);
}
else if (arrayTypeCode == SpelTypeCode.ULONG)
{
PopulateULongArray(state, newArray, typeConverter, initializer);
}
else if (arrayTypeCode == SpelTypeCode.SHORT)
{
PopulateShortArray(state, newArray, typeConverter, initializer);
}
else if (arrayTypeCode == SpelTypeCode.USHORT)
{
PopulateUShortArray(state, newArray, typeConverter, initializer);
}
else
{
throw new InvalidOperationException(arrayTypeCode.Name);
}
}
return(new TypedValue(newArray));
}