internal static AttributeNode ParseAttribute(Stream stream, ClassReaderState state, AttributeScope scope)
{
var attribute = new AttributeNode
{
Name = state.ConstantPool.GetEntry <Utf8Entry>(Binary.BigEndian.ReadUInt16(stream)).String
};
attribute.Parse(stream, scope, state);
return(attribute);
}
private static MethodNode ParseMethod(Stream stream, ClassReaderState state)
{
var methodNode = new MethodNode
{
Owner = state.ClassNode,
Access = (MethodAccessModifiers)Binary.BigEndian.ReadUInt16(stream),
Name = state.ConstantPool.GetEntry <Utf8Entry>(Binary.BigEndian.ReadUInt16(stream)).String,
Descriptor = MethodDescriptor.Parse(state.ConstantPool.GetEntry <Utf8Entry>(Binary.BigEndian.ReadUInt16(stream)).String)
};
var attributesCount = Binary.BigEndian.ReadUInt16(stream);
methodNode.Attributes.Capacity = attributesCount;
for (var i = 0; i < attributesCount; i++)
{
methodNode.Attributes.Add(ParseAttribute(stream, state, AttributeScope.Method));
}
return(methodNode);
}
public static ClassNode ParseClass(Stream stream)
{
var state = new ClassReaderState();
var result = new ClassNode();
state.ClassNode = result;
if (Binary.BigEndian.ReadUInt32(stream) != Magic)
{
throw new IOException("Wrong magic in class");
}
result.MinorVersion = Binary.BigEndian.ReadUInt16(stream);
result.MajorVersion = (ClassVersion)Binary.BigEndian.ReadUInt16(stream);
if (result.MajorVersion > ClassVersion.Java8)
{
throw new Exception($"Wrong Java version: {result.MajorVersion}");
}
var constantPool = new ConstantPool();
constantPool.Read(stream);
state.ConstantPool = constantPool;
result.Access = (ClassAccessModifiers)Binary.BigEndian.ReadUInt16(stream);
result.Name = new ClassName(constantPool.GetEntry <ClassEntry>(Binary.BigEndian.ReadUInt16(stream)).Name.String);
result.SuperName = new ClassName(constantPool.GetEntry <ClassEntry>(Binary.BigEndian.ReadUInt16(stream)).Name.String);
var interfacesCount = Binary.BigEndian.ReadUInt16(stream);
result.Interfaces.Capacity = interfacesCount;
for (var i = 0; i < interfacesCount; i++)
{
result.Interfaces.Add(new ClassName(constantPool.GetEntry <ClassEntry>(Binary.BigEndian.ReadUInt16(stream)).Name.String));
}
var fieldsCount = Binary.BigEndian.ReadUInt16(stream);
result.Fields.Capacity = fieldsCount;
for (var i = 0; i < fieldsCount; i++)
{
result.Fields.Add(ParseField(stream, state));
}
var methodsCount = Binary.BigEndian.ReadUInt16(stream);
result.Methods.Capacity = methodsCount;
for (var i = 0; i < methodsCount; i++)
{
result.Methods.Add(ParseMethod(stream, state));
}
var attributesCount = Binary.BigEndian.ReadUInt16(stream);
result.Attributes.Capacity = attributesCount;
for (var i = 0; i < attributesCount; i++)
{
result.Attributes.Add(ParseAttribute(stream, state, AttributeScope.Class));
}
result.Parse(state);
return(result);
}
