/// <summary>
/// Returns the total size in bytes of all the attributes that correspond to the given field,
/// method or class access flags and signature.
/// </summary>
/// <remarks>
/// Returns the total size in bytes of all the attributes that correspond to the given field,
/// method or class access flags and signature. This size includes the 6 header bytes
/// (attribute_name_index and attribute_length) per attribute. Also adds the attribute type names
/// to the constant pool.
/// </remarks>
/// <param name="symbolTable">
/// where the constants used in the attributes must be stored.
/// </param>
/// <param name="accessFlags">some field, method or class access flags.</param>
/// <param name="signatureIndex">
/// the constant pool index of a field, method of class signature.
/// </param>
/// <returns>
/// the size of all the attributes in bytes. This size includes the size of the attribute
/// headers.
/// </returns>
internal static int ComputeAttributesSize(SymbolTable symbolTable, AccessFlags accessFlags
, int signatureIndex)
{
var size = 0;
// Before Java 1.5, synthetic fields are represented with a Synthetic attribute.
if (accessFlags.HasFlagFast(AccessFlags.Synthetic) && symbolTable.GetMajorVersion
() < OpcodesConstants.V1_5)
{
// Synthetic attributes always use 6 bytes.
symbolTable.AddConstantUtf8(Constants.Synthetic);
size += 6;
}
if (signatureIndex != 0)
{
// Signature attributes always use 8 bytes.
symbolTable.AddConstantUtf8(Constants.Signature);
size += 8;
}
// ACC_DEPRECATED is ASM specific, the ClassFile format uses a Deprecated attribute instead.
if (accessFlags.HasFlagFast(AccessFlags.Deprecated))
{
// Deprecated attributes always use 6 bytes.
symbolTable.AddConstantUtf8(Constants.Deprecated);
size += 6;
}
return(size);
}
/// <summary>
/// Constructs a new
/// <see cref="TraceSignatureVisitor" />
/// .
/// </summary>
/// <param name="accessFlags">
/// for class type signatures, the access flags of the class.
/// </param>
public TraceSignatureVisitor(AccessFlags accessFlags)
: base(VisitorAsmApiVersion.Asm7)
{
/* latest api = */
isInterface = accessFlags.HasFlagFast(AccessFlags.Interface);
declaration = new StringBuilder();
}
/// <summary>
/// Puts all the attributes that correspond to the given field, method or class access flags and
/// signature, in the given byte vector.
/// </summary>
/// <remarks>
/// Puts all the attributes that correspond to the given field, method or class access flags and
/// signature, in the given byte vector. This includes the 6 header bytes (attribute_name_index and
/// attribute_length) per attribute.
/// </remarks>
/// <param name="symbolTable">
/// where the constants used in the attributes must be stored.
/// </param>
/// <param name="accessFlags">some field, method or class access flags.</param>
/// <param name="signatureIndex">
/// the constant pool index of a field, method of class signature.
/// </param>
/// <param name="output">where the attributes must be written.</param>
internal static void PutAttributes(SymbolTable symbolTable, AccessFlags accessFlags, int
signatureIndex, ByteVector output)
{
// Before Java 1.5, synthetic fields are represented with a Synthetic attribute.
if (accessFlags.HasFlagFast(AccessFlags.Synthetic) && symbolTable.GetMajorVersion
() < OpcodesConstants.V1_5)
{
output.PutShort(symbolTable.AddConstantUtf8(Constants.Synthetic)).PutInt(0);
}
if (signatureIndex != 0)
{
output.PutShort(symbolTable.AddConstantUtf8(Constants.Signature)).PutInt(2).PutShort
(signatureIndex);
}
if (accessFlags.HasFlagFast(AccessFlags.Deprecated))
{
output.PutShort(symbolTable.AddConstantUtf8(Constants.Deprecated)).PutInt(0);
}
}
/// <summary>
/// Puts the content of the record component generated by this RecordComponentWriter into the given
/// ByteVector.
/// </summary>
/// <param name="output">where the record_component_info structure must be put.</param>
internal void PutRecordComponentInfo(ByteVector output)
{
output.PutShort(nameIndex).PutShort(descriptorIndex);
// Compute and put the attributes_count field.
// For ease of reference, we use here the same attribute order as in Section 4.7 of the JVMS.
var attributesCount = 0;
if (signatureIndex != 0)
{
++attributesCount;
}
if (accessFlags.HasFlagFast(AccessFlags.Deprecated))
{
++attributesCount;
}
if (lastRuntimeVisibleAnnotation != null)
{
++attributesCount;
}
if (lastRuntimeInvisibleAnnotation != null)
{
++attributesCount;
}
if (lastRuntimeVisibleTypeAnnotation != null)
{
++attributesCount;
}
if (lastRuntimeInvisibleTypeAnnotation != null)
{
++attributesCount;
}
if (firstAttribute != null)
{
attributesCount += firstAttribute.GetAttributeCount();
}
output.PutShort(attributesCount);
Attribute.PutAttributes(symbolTable, accessFlags, signatureIndex, output);
AnnotationWriter.PutAnnotations(symbolTable, lastRuntimeVisibleAnnotation, lastRuntimeInvisibleAnnotation
, lastRuntimeVisibleTypeAnnotation, lastRuntimeInvisibleTypeAnnotation, output);
if (firstAttribute != null)
{
firstAttribute.PutAttributes(symbolTable, output);
}
}
/// <summary>
/// Puts the content of the field_info JVMS structure generated by this FieldWriter into the given
/// ByteVector.
/// </summary>
/// <param name="output">where the field_info structure must be put.</param>
internal void PutFieldInfo(ByteVector output)
{
var useSyntheticAttribute = symbolTable.GetMajorVersion() < OpcodesConstants.V1_5;
// Put the access_flags, name_index and descriptor_index fields.
var mask = useSyntheticAttribute ? AccessFlags.Synthetic : 0;
output.PutShort((int)(accessFlags & ~mask)).PutShort(nameIndex).PutShort(descriptorIndex
);
// Compute and put the attributes_count field.
// For ease of reference, we use here the same attribute order as in Section 4.7 of the JVMS.
var attributesCount = 0;
if (constantValueIndex != 0)
{
++attributesCount;
}
if (accessFlags.HasFlagFast(AccessFlags.Synthetic) && useSyntheticAttribute)
{
++attributesCount;
}
if (signatureIndex != 0)
{
++attributesCount;
}
if (accessFlags.HasFlagFast(AccessFlags.Deprecated))
{
++attributesCount;
}
if (lastRuntimeVisibleAnnotation != null)
{
++attributesCount;
}
if (lastRuntimeInvisibleAnnotation != null)
{
++attributesCount;
}
if (lastRuntimeVisibleTypeAnnotation != null)
{
++attributesCount;
}
if (lastRuntimeInvisibleTypeAnnotation != null)
{
++attributesCount;
}
if (firstAttribute != null)
{
attributesCount += firstAttribute.GetAttributeCount();
}
output.PutShort(attributesCount);
// Put the field_info attributes.
// For ease of reference, we use here the same attribute order as in Section 4.7 of the JVMS.
if (constantValueIndex != 0)
{
output.PutShort(symbolTable.AddConstantUtf8(Constants.Constant_Value)).PutInt(2)
.PutShort(constantValueIndex);
}
Attribute.PutAttributes(symbolTable, accessFlags, signatureIndex, output);
AnnotationWriter.PutAnnotations(symbolTable, lastRuntimeVisibleAnnotation, lastRuntimeInvisibleAnnotation
, lastRuntimeVisibleTypeAnnotation, lastRuntimeInvisibleTypeAnnotation, output);
if (firstAttribute != null)
{
firstAttribute.PutAttributes(symbolTable, output);
}
}
