/// <summary>
/// Reads a single lookup switch at the current position of the provided reader.
/// </summary>
/// <param name="reader">The reader to use.</param>
/// <returns>The lookup switch</returns>
public static LookupSwitch FromReader(IBigEndianReader reader)
{
var lookup = new LookupSwitch
{
DefaultOffset = reader.ReadInt32(),
};
int count = reader.ReadInt32();
for (int i = 0; i < count; i++)
{
int key = reader.ReadInt32();
int offset = reader.ReadInt32();
lookup.Table[key] = offset;
}
return(lookup);
}
private object ReadRawOperand(ByteOpCode opcode)
{
switch (opcode.OperandType)
{
case ByteCodeOperandType.None:
return(null);
case ByteCodeOperandType.Byte:
case ByteCodeOperandType.ConstantIndex:
case ByteCodeOperandType.LocalIndex:
case ByteCodeOperandType.PrimitiveType:
return(_reader.ReadByte());
case ByteCodeOperandType.Short:
case ByteCodeOperandType.WideConstantIndex:
case ByteCodeOperandType.BranchOffset:
case ByteCodeOperandType.LocalConst:
case ByteCodeOperandType.FieldIndex:
case ByteCodeOperandType.MethodIndex:
case ByteCodeOperandType.ClassIndex:
return(_reader.ReadInt16());
case ByteCodeOperandType.TableSwitch:
_reader.Position = FileSegment.Align((uint)_reader.Position, 4);
return(TableSwitch.FromReader(_reader));
case ByteCodeOperandType.LookupSwitch:
_reader.Position = FileSegment.Align((uint)_reader.Position, 4);
return(LookupSwitch.FromReader(_reader));
case ByteCodeOperandType.WideIndexCountZero:
case ByteCodeOperandType.WideIndexByte:
case ByteCodeOperandType.WideBranchOffset:
case ByteCodeOperandType.DynamicIndex:
return(_reader.ReadInt32());
default:
throw new ArgumentOutOfRangeException();
}
}
