private static Attributes ReadAttributes(BytecodeReader reader, ushort attributesCount, ConstantPool cp)
{
var attributesTable = new List <object>();
Dictionary <string, Action> nameActionDictionary = new Dictionary <string, Action>
{
{ "Code", () => attributesTable.Add(ReadAttributeCode(reader, cp)) },
{ "ConstantValue", () => attributesTable.Add(ReadAttributeConstantValue(reader)) },
{ "StackMapTable", () => attributesTable.Add(ReadAttributeStackMapTable(reader)) },
{ "BootstrapMethods", () => attributesTable.Add(ReadAttributeBootstrapMethods(reader)) },
{ "LineNumberTable", () => attributesTable.Add(ReadAttributeLineNumberTable(reader)) },
{ "SourceFile", () => attributesTable.Add(ReadAttributeSourceFile(reader)) }
};
for (int i = 0; i < attributesCount; i++)
{
if (nameActionDictionary.TryGetValue(cp.GetConstantUtf8(reader.ReadInt()).Value, out Action readAttribute))
{
readAttribute.Invoke();
}
else
{
throw new KeyNotFoundException("Attribute type not recognized");
}
}
return(new Attributes(attributesTable));
}
private static ConstantPool ReadConstantPool(BytecodeReader reader, ushort constantPoolCount)
{
// TODO: check if long and double constants reading right
ConstantPool constantPool = new ConstantPool();
var tagDictionary = new Dictionary <int, Action>
{
{
1,
() =>
{
ushort length = reader.ReadUShort();
String value = reader.ReadString(length);
constantPool.AddConstantUtf8(new ConstantUtf8(length, value));
}
},
{ 3, () => constantPool.AddConstantInteger(reader.ReadInt()) },
{ 4, () => constantPool.AddConstantFloat(reader.ReadFloat()) },
{ 5, () => constantPool.AddConstantLong(reader.ReadLong()) },
{ 6, () => constantPool.AddConstantDouble(reader.ReadDouble()) },
{ 7, () => constantPool.AddConstantClass(new ConstantClass(reader.ReadUShort())) },
{ 8, () => constantPool.AddConstantString(new ConstantString(reader.ReadUShort())) },
{ 9, () => constantPool.AddConstantFieldRef(new ConstantFieldRef(reader.ReadUShort(), reader.ReadUShort())) },
{ 10, () => constantPool.AddConstantMethodRef(new ConstantMethodRef(reader.ReadUShort(), reader.ReadUShort())) },
{ 11, () => constantPool.AddConstantInterfaceMethodRef(new ConstantInterfaceMethodRef(reader.ReadUShort(), reader.ReadUShort())) },
{ 12, () => constantPool.AddConstantNameAndType(new ConstantNameAndType(reader.ReadUShort(), reader.ReadUShort())) },
{ 15, () => constantPool.AddConstantMethodHandle(new ConstantMethodHandle(reader.ReadByte(), reader.ReadUShort())) },
{ 16, () => constantPool.AddConstantMethodType(new ConstantMethodType(reader.ReadUShort())) },
{ 18, () => constantPool.AddConstantInvokeDynamic(new ConstantInvokeDynamic(reader.ReadUShort(), reader.ReadUShort())) },
{ 19, () => constantPool.AddConstantModule(new ConstantModule(reader.ReadUShort())) },
{ 20, () => constantPool.AddConstantPackage(new ConstantPackage(reader.ReadUShort())) }
};
for (int i = 0; i < constantPoolCount; i++)
{
if (tagDictionary.TryGetValue(reader.ReadByte(), out Action createConstant))
{
createConstant.Invoke();
}
else
{
throw new KeyNotFoundException("Constant type not recognized");
}
}
return(constantPool);
}