This page hosts a formal specification of .class file format using Kaitai Struct. This specification can be automatically translated into a variety of programming languages to get a parsing library.
All parsing code for JavaScript generated by Kaitai Struct depends on the JavaScript runtime library. You have to install it before you can parse data.
The JavaScript runtime library is available at npm:
npm install kaitai-structSee the usage examples in the JavaScript notes.
Parse structure from an ArrayBuffer:
var arrayBuffer = ...;
var data = new JavaClass(new KaitaiStream(arrayBuffer));
After that, one can get various attributes from the structure by accessing fields or properties like:
data.magic // => get magic
// This is a generated file! Please edit source .ksy file and use kaitai-struct-compiler to rebuild
(function (root, factory) {
if (typeof define === 'function' && define.amd) {
define(['kaitai-struct/KaitaiStream'], factory);
} else if (typeof module === 'object' && module.exports) {
module.exports = factory(require('kaitai-struct/KaitaiStream'));
} else {
root.JavaClass = factory(root.KaitaiStream);
}
}(typeof self !== 'undefined' ? self : this, function (KaitaiStream) {
/**
* @see {@link https://docs.oracle.com/javase/specs/jvms/se19/html/jvms-4.html|Source}
* @see {@link https://docs.oracle.com/javase/specs/jls/se6/jls3.pdf|Source}
* @see {@link https://github.com/openjdk/jdk/blob/jdk-21%2B14/src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/runtime/ClassConstants.java|Source}
* @see {@link https://github.com/openjdk/jdk/blob/jdk-21%2B14/src/java.base/share/native/include/classfile_constants.h.template|Source}
* @see {@link https://github.com/openjdk/jdk/blob/jdk-21%2B14/src/hotspot/share/classfile/classFileParser.cpp|Source}
*/
var JavaClass = (function() {
function JavaClass(_io, _parent, _root) {
this._io = _io;
this._parent = _parent;
this._root = _root || this;
this._read();
}
JavaClass.prototype._read = function() {
this.magic = this._io.readBytes(4);
if (!((KaitaiStream.byteArrayCompare(this.magic, [202, 254, 186, 190]) == 0))) {
throw new KaitaiStream.ValidationNotEqualError([202, 254, 186, 190], this.magic, this._io, "/seq/0");
}
this.versionMinor = this._io.readU2be();
this.versionMajor = this._io.readU2be();
if (!(this.versionMajor >= 43)) {
throw new KaitaiStream.ValidationLessThanError(43, this.versionMajor, this._io, "/seq/2");
}
this.constantPoolCount = this._io.readU2be();
this.constantPool = [];
for (var i = 0; i < (this.constantPoolCount - 1); i++) {
this.constantPool.push(new ConstantPoolEntry(this._io, this, this._root, (i != 0 ? this.constantPool[(i - 1)].isTwoEntries : false)));
}
this.accessFlags = this._io.readU2be();
this.thisClass = this._io.readU2be();
this.superClass = this._io.readU2be();
this.interfacesCount = this._io.readU2be();
this.interfaces = [];
for (var i = 0; i < this.interfacesCount; i++) {
this.interfaces.push(this._io.readU2be());
}
this.fieldsCount = this._io.readU2be();
this.fields = [];
for (var i = 0; i < this.fieldsCount; i++) {
this.fields.push(new FieldInfo(this._io, this, this._root));
}
this.methodsCount = this._io.readU2be();
this.methods = [];
for (var i = 0; i < this.methodsCount; i++) {
this.methods.push(new MethodInfo(this._io, this, this._root));
}
this.attributesCount = this._io.readU2be();
this.attributes = [];
for (var i = 0; i < this.attributesCount; i++) {
this.attributes.push(new AttributeInfo(this._io, this, this._root));
}
}
/**
* `class` file format version 45.3 (appeared in the very first publicly
* known release of Java SE AND JDK 1.0.2, released 23th January 1996) is so
* ancient that it's taken for granted. Earlier formats seem to be
* undocumented. Changes of `version_minor` don't change `class` format.
* Earlier `version_major`s likely belong to Oak programming language, the
* proprietary predecessor of Java.
* @see James Gosling, Bill Joy and Guy Steele. The Java Language Specification. English. Ed. by Lisa Friendly. Addison-Wesley, Aug. 1996, p. 825. ISBN: 0-201-63451-1.
* @see Frank Yellin and Tim Lindholm. The Java Virtual Machine Specification. English. Ed. by Lisa Friendly. Addison-Wesley, Sept. 1996, p. 475. ISBN: 0-201-63452-X.
*/
var VersionGuard = JavaClass.VersionGuard = (function() {
function VersionGuard(_io, _parent, _root, major) {
this._io = _io;
this._parent = _parent;
this._root = _root || this;
this.major = major;
this._read();
}
VersionGuard.prototype._read = function() {
this._unnamed0 = this._io.readBytes(0);
var _ = this._unnamed0;
if (!(this._root.versionMajor >= this.major)) {
throw new KaitaiStream.ValidationExprError(this._unnamed0, this._io, "/types/version_guard/seq/0");
}
}
return VersionGuard;
})();
/**
* @see {@link https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-4.html#jvms-4.4.5|Source}
*/
var FloatCpInfo = JavaClass.FloatCpInfo = (function() {
function FloatCpInfo(_io, _parent, _root) {
this._io = _io;
this._parent = _parent;
this._root = _root || this;
this._read();
}
FloatCpInfo.prototype._read = function() {
this.value = this._io.readF4be();
}
return FloatCpInfo;
})();
/**
* @see {@link https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-4.html#jvms-4.7|Source}
*/
var AttributeInfo = JavaClass.AttributeInfo = (function() {
function AttributeInfo(_io, _parent, _root) {
this._io = _io;
this._parent = _parent;
this._root = _root || this;
this._read();
}
AttributeInfo.prototype._read = function() {
this.nameIndex = this._io.readU2be();
this.attributeLength = this._io.readU4be();
switch (this.nameAsStr) {
case "SourceFile":
this._raw_info = this._io.readBytes(this.attributeLength);
var _io__raw_info = new KaitaiStream(this._raw_info);
this.info = new AttrBodySourceFile(_io__raw_info, this, this._root);
break;
case "LineNumberTable":
this._raw_info = this._io.readBytes(this.attributeLength);
var _io__raw_info = new KaitaiStream(this._raw_info);
this.info = new AttrBodyLineNumberTable(_io__raw_info, this, this._root);
break;
case "Exceptions":
this._raw_info = this._io.readBytes(this.attributeLength);
var _io__raw_info = new KaitaiStream(this._raw_info);
this.info = new AttrBodyExceptions(_io__raw_info, this, this._root);
break;
case "Code":
this._raw_info = this._io.readBytes(this.attributeLength);
var _io__raw_info = new KaitaiStream(this._raw_info);
this.info = new AttrBodyCode(_io__raw_info, this, this._root);
break;
default:
this.info = this._io.readBytes(this.attributeLength);
break;
}
}
/**
* @see {@link https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-4.html#jvms-4.7.3|Source}
*/
var AttrBodyCode = AttributeInfo.AttrBodyCode = (function() {
function AttrBodyCode(_io, _parent, _root) {
this._io = _io;
this._parent = _parent;
this._root = _root || this;
this._read();
}
AttrBodyCode.prototype._read = function() {
this.maxStack = this._io.readU2be();
this.maxLocals = this._io.readU2be();
this.codeLength = this._io.readU4be();
this.code = this._io.readBytes(this.codeLength);
this.exceptionTableLength = this._io.readU2be();
this.exceptionTable = [];
for (var i = 0; i < this.exceptionTableLength; i++) {
this.exceptionTable.push(new ExceptionEntry(this._io, this, this._root));
}
this.attributesCount = this._io.readU2be();
this.attributes = [];
for (var i = 0; i < this.attributesCount; i++) {
this.attributes.push(new AttributeInfo(this._io, this, this._root));
}
}
/**
* @see {@link https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-4.html#jvms-4.7.3|Source}
*/
var ExceptionEntry = AttrBodyCode.ExceptionEntry = (function() {
function ExceptionEntry(_io, _parent, _root) {
this._io = _io;
this._parent = _parent;
this._root = _root || this;
this._read();
}
ExceptionEntry.prototype._read = function() {
this.startPc = this._io.readU2be();
this.endPc = this._io.readU2be();
this.handlerPc = this._io.readU2be();
this.catchType = this._io.readU2be();
}
Object.defineProperty(ExceptionEntry.prototype, 'catchException', {
get: function() {
if (this._m_catchException !== undefined)
return this._m_catchException;
if (this.catchType != 0) {
this._m_catchException = this._root.constantPool[(this.catchType - 1)];
}
return this._m_catchException;
}
});
/**
* Start of a code region where exception handler is being
* active, index in code array (inclusive)
*/
/**
* End of a code region where exception handler is being
* active, index in code array (exclusive)
*/
/**
* Start of exception handler code, index in code array
*/
/**
* Exception class that this handler catches, index in constant
* pool, or 0 (catch all exceptions handler, used to implement
* `finally`).
*/
return ExceptionEntry;
})();
return AttrBodyCode;
})();
/**
* @see {@link https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-4.html#jvms-4.7.5|Source}
*/
var AttrBodyExceptions = AttributeInfo.AttrBodyExceptions = (function() {
function AttrBodyExceptions(_io, _parent, _root) {
this._io = _io;
this._parent = _parent;
this._root = _root || this;
this._read();
}
AttrBodyExceptions.prototype._read = function() {
this.numberOfExceptions = this._io.readU2be();
this.exceptions = [];
for (var i = 0; i < this.numberOfExceptions; i++) {
this.exceptions.push(new ExceptionTableEntry(this._io, this, this._root));
}
}
var ExceptionTableEntry = AttrBodyExceptions.ExceptionTableEntry = (function() {
function ExceptionTableEntry(_io, _parent, _root) {
this._io = _io;
this._parent = _parent;
this._root = _root || this;
this._read();
}
ExceptionTableEntry.prototype._read = function() {
this.index = this._io.readU2be();
}
Object.defineProperty(ExceptionTableEntry.prototype, 'asInfo', {
get: function() {
if (this._m_asInfo !== undefined)
return this._m_asInfo;
this._m_asInfo = this._root.constantPool[(this.index - 1)].cpInfo;
return this._m_asInfo;
}
});
Object.defineProperty(ExceptionTableEntry.prototype, 'nameAsStr', {
get: function() {
if (this._m_nameAsStr !== undefined)
return this._m_nameAsStr;
this._m_nameAsStr = this.asInfo.nameAsStr;
return this._m_nameAsStr;
}
});
return ExceptionTableEntry;
})();
return AttrBodyExceptions;
})();
/**
* @see {@link https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-4.html#jvms-4.7.10|Source}
*/
var AttrBodySourceFile = AttributeInfo.AttrBodySourceFile = (function() {
function AttrBodySourceFile(_io, _parent, _root) {
this._io = _io;
this._parent = _parent;
this._root = _root || this;
this._read();
}
AttrBodySourceFile.prototype._read = function() {
this.sourcefileIndex = this._io.readU2be();
}
Object.defineProperty(AttrBodySourceFile.prototype, 'sourcefileAsStr', {
get: function() {
if (this._m_sourcefileAsStr !== undefined)
return this._m_sourcefileAsStr;
this._m_sourcefileAsStr = this._root.constantPool[(this.sourcefileIndex - 1)].cpInfo.value;
return this._m_sourcefileAsStr;
}
});
return AttrBodySourceFile;
})();
/**
* @see {@link https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-4.html#jvms-4.7.12|Source}
*/
var AttrBodyLineNumberTable = AttributeInfo.AttrBodyLineNumberTable = (function() {
function AttrBodyLineNumberTable(_io, _parent, _root) {
this._io = _io;
this._parent = _parent;
this._root = _root || this;
this._read();
}
AttrBodyLineNumberTable.prototype._read = function() {
this.lineNumberTableLength = this._io.readU2be();
this.lineNumberTable = [];
for (var i = 0; i < this.lineNumberTableLength; i++) {
this.lineNumberTable.push(new LineNumberTableEntry(this._io, this, this._root));
}
}
var LineNumberTableEntry = AttrBodyLineNumberTable.LineNumberTableEntry = (function() {
function LineNumberTableEntry(_io, _parent, _root) {
this._io = _io;
this._parent = _parent;
this._root = _root || this;
this._read();
}
LineNumberTableEntry.prototype._read = function() {
this.startPc = this._io.readU2be();
this.lineNumber = this._io.readU2be();
}
return LineNumberTableEntry;
})();
return AttrBodyLineNumberTable;
})();
Object.defineProperty(AttributeInfo.prototype, 'nameAsStr', {
get: function() {
if (this._m_nameAsStr !== undefined)
return this._m_nameAsStr;
this._m_nameAsStr = this._root.constantPool[(this.nameIndex - 1)].cpInfo.value;
return this._m_nameAsStr;
}
});
return AttributeInfo;
})();
/**
* @see {@link https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-4.html#jvms-4.4.2|Source}
*/
var MethodRefCpInfo = JavaClass.MethodRefCpInfo = (function() {
function MethodRefCpInfo(_io, _parent, _root) {
this._io = _io;
this._parent = _parent;
this._root = _root || this;
this._read();
}
MethodRefCpInfo.prototype._read = function() {
this.classIndex = this._io.readU2be();
this.nameAndTypeIndex = this._io.readU2be();
}
Object.defineProperty(MethodRefCpInfo.prototype, 'classAsInfo', {
get: function() {
if (this._m_classAsInfo !== undefined)
return this._m_classAsInfo;
this._m_classAsInfo = this._root.constantPool[(this.classIndex - 1)].cpInfo;
return this._m_classAsInfo;
}
});
Object.defineProperty(MethodRefCpInfo.prototype, 'nameAndTypeAsInfo', {
get: function() {
if (this._m_nameAndTypeAsInfo !== undefined)
return this._m_nameAndTypeAsInfo;
this._m_nameAndTypeAsInfo = this._root.constantPool[(this.nameAndTypeIndex - 1)].cpInfo;
return this._m_nameAndTypeAsInfo;
}
});
return MethodRefCpInfo;
})();
/**
* @see {@link https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-4.html#jvms-4.5|Source}
*/
var FieldInfo = JavaClass.FieldInfo = (function() {
function FieldInfo(_io, _parent, _root) {
this._io = _io;
this._parent = _parent;
this._root = _root || this;
this._read();
}
FieldInfo.prototype._read = function() {
this.accessFlags = this._io.readU2be();
this.nameIndex = this._io.readU2be();
this.descriptorIndex = this._io.readU2be();
this.attributesCount = this._io.readU2be();
this.attributes = [];
for (var i = 0; i < this.attributesCount; i++) {
this.attributes.push(new AttributeInfo(this._io, this, this._root));
}
}
Object.defineProperty(FieldInfo.prototype, 'nameAsStr', {
get: function() {
if (this._m_nameAsStr !== undefined)
return this._m_nameAsStr;
this._m_nameAsStr = this._root.constantPool[(this.nameIndex - 1)].cpInfo.value;
return this._m_nameAsStr;
}
});
return FieldInfo;
})();
/**
* @see {@link https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-4.html#jvms-4.4.6|Source}
*/
var DoubleCpInfo = JavaClass.DoubleCpInfo = (function() {
function DoubleCpInfo(_io, _parent, _root) {
this._io = _io;
this._parent = _parent;
this._root = _root || this;
this._read();
}
DoubleCpInfo.prototype._read = function() {
this.value = this._io.readF8be();
}
return DoubleCpInfo;
})();
/**
* @see {@link https://docs.oracle.com/javase/specs/jvms/se19/html/jvms-4.html#jvms-4.4.10|Source}
*/
var DynamicCpInfo = JavaClass.DynamicCpInfo = (function() {
function DynamicCpInfo(_io, _parent, _root) {
this._io = _io;
this._parent = _parent;
this._root = _root || this;
this._read();
}
DynamicCpInfo.prototype._read = function() {
this._unnamed0 = new VersionGuard(this._io, this, this._root, 55);
this.bootstrapMethodAttrIndex = this._io.readU2be();
this.nameAndTypeIndex = this._io.readU2be();
}
return DynamicCpInfo;
})();
/**
* @see {@link https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-4.html#jvms-4.4.5|Source}
*/
var LongCpInfo = JavaClass.LongCpInfo = (function() {
function LongCpInfo(_io, _parent, _root) {
this._io = _io;
this._parent = _parent;
this._root = _root || this;
this._read();
}
LongCpInfo.prototype._read = function() {
this.value = this._io.readU8be();
}
return LongCpInfo;
})();
/**
* @see {@link https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-4.html#jvms-4.4.10|Source}
*/
var InvokeDynamicCpInfo = JavaClass.InvokeDynamicCpInfo = (function() {
function InvokeDynamicCpInfo(_io, _parent, _root) {
this._io = _io;
this._parent = _parent;
this._root = _root || this;
this._read();
}
InvokeDynamicCpInfo.prototype._read = function() {
this._unnamed0 = new VersionGuard(this._io, this, this._root, 51);
this.bootstrapMethodAttrIndex = this._io.readU2be();
this.nameAndTypeIndex = this._io.readU2be();
}
return InvokeDynamicCpInfo;
})();
/**
* @see {@link https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-4.html#jvms-4.4.8|Source}
*/
var MethodHandleCpInfo = JavaClass.MethodHandleCpInfo = (function() {
MethodHandleCpInfo.ReferenceKindEnum = Object.freeze({
GET_FIELD: 1,
GET_STATIC: 2,
PUT_FIELD: 3,
PUT_STATIC: 4,
INVOKE_VIRTUAL: 5,
INVOKE_STATIC: 6,
INVOKE_SPECIAL: 7,
NEW_INVOKE_SPECIAL: 8,
INVOKE_INTERFACE: 9,
1: "GET_FIELD",
2: "GET_STATIC",
3: "PUT_FIELD",
4: "PUT_STATIC",
5: "INVOKE_VIRTUAL",
6: "INVOKE_STATIC",
7: "INVOKE_SPECIAL",
8: "NEW_INVOKE_SPECIAL",
9: "INVOKE_INTERFACE",
});
function MethodHandleCpInfo(_io, _parent, _root) {
this._io = _io;
this._parent = _parent;
this._root = _root || this;
this._read();
}
MethodHandleCpInfo.prototype._read = function() {
this._unnamed0 = new VersionGuard(this._io, this, this._root, 51);
this.referenceKind = this._io.readU1();
this.referenceIndex = this._io.readU2be();
}
return MethodHandleCpInfo;
})();
/**
* Project Jigsaw modules introduced in Java 9
* @see {@link https://docs.oracle.com/javase/specs/jvms/se19/html/jvms-3.html#jvms-3.16|Source}
* @see {@link https://docs.oracle.com/javase/specs/jvms/se19/html/jvms-4.html#jvms-4.4.11|Source}
* @see {@link https://docs.oracle.com/javase/specs/jvms/se19/html/jvms-4.html#jvms-4.4.12|Source}
*/
var ModulePackageCpInfo = JavaClass.ModulePackageCpInfo = (function() {
function ModulePackageCpInfo(_io, _parent, _root) {
this._io = _io;
this._parent = _parent;
this._root = _root || this;
this._read();
}
ModulePackageCpInfo.prototype._read = function() {
this._unnamed0 = new VersionGuard(this._io, this, this._root, 53);
this.nameIndex = this._io.readU2be();
}
Object.defineProperty(ModulePackageCpInfo.prototype, 'nameAsInfo', {
get: function() {
if (this._m_nameAsInfo !== undefined)
return this._m_nameAsInfo;
this._m_nameAsInfo = this._root.constantPool[(this.nameIndex - 1)].cpInfo;
return this._m_nameAsInfo;
}
});
Object.defineProperty(ModulePackageCpInfo.prototype, 'nameAsStr', {
get: function() {
if (this._m_nameAsStr !== undefined)
return this._m_nameAsStr;
this._m_nameAsStr = this.nameAsInfo.value;
return this._m_nameAsStr;
}
});
return ModulePackageCpInfo;
})();
/**
* @see {@link https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-4.html#jvms-4.4.6|Source}
*/
var NameAndTypeCpInfo = JavaClass.NameAndTypeCpInfo = (function() {
function NameAndTypeCpInfo(_io, _parent, _root) {
this._io = _io;
this._parent = _parent;
this._root = _root || this;
this._read();
}
NameAndTypeCpInfo.prototype._read = function() {
this.nameIndex = this._io.readU2be();
this.descriptorIndex = this._io.readU2be();
}
Object.defineProperty(NameAndTypeCpInfo.prototype, 'nameAsInfo', {
get: function() {
if (this._m_nameAsInfo !== undefined)
return this._m_nameAsInfo;
this._m_nameAsInfo = this._root.constantPool[(this.nameIndex - 1)].cpInfo;
return this._m_nameAsInfo;
}
});
Object.defineProperty(NameAndTypeCpInfo.prototype, 'nameAsStr', {
get: function() {
if (this._m_nameAsStr !== undefined)
return this._m_nameAsStr;
this._m_nameAsStr = this.nameAsInfo.value;
return this._m_nameAsStr;
}
});
Object.defineProperty(NameAndTypeCpInfo.prototype, 'descriptorAsInfo', {
get: function() {
if (this._m_descriptorAsInfo !== undefined)
return this._m_descriptorAsInfo;
this._m_descriptorAsInfo = this._root.constantPool[(this.descriptorIndex - 1)].cpInfo;
return this._m_descriptorAsInfo;
}
});
Object.defineProperty(NameAndTypeCpInfo.prototype, 'descriptorAsStr', {
get: function() {
if (this._m_descriptorAsStr !== undefined)
return this._m_descriptorAsStr;
this._m_descriptorAsStr = this.descriptorAsInfo.value;
return this._m_descriptorAsStr;
}
});
return NameAndTypeCpInfo;
})();
/**
* @see {@link https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-4.html#jvms-4.4.7|Source}
*/
var Utf8CpInfo = JavaClass.Utf8CpInfo = (function() {
function Utf8CpInfo(_io, _parent, _root) {
this._io = _io;
this._parent = _parent;
this._root = _root || this;
this._read();
}
Utf8CpInfo.prototype._read = function() {
this.strLen = this._io.readU2be();
this.value = KaitaiStream.bytesToStr(this._io.readBytes(this.strLen), "UTF-8");
}
return Utf8CpInfo;
})();
/**
* @see {@link https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-4.html#jvms-4.4.3|Source}
*/
var StringCpInfo = JavaClass.StringCpInfo = (function() {
function StringCpInfo(_io, _parent, _root) {
this._io = _io;
this._parent = _parent;
this._root = _root || this;
this._read();
}
StringCpInfo.prototype._read = function() {
this.stringIndex = this._io.readU2be();
}
return StringCpInfo;
})();
/**
* @see {@link https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-4.html#jvms-4.4.9|Source}
*/
var MethodTypeCpInfo = JavaClass.MethodTypeCpInfo = (function() {
function MethodTypeCpInfo(_io, _parent, _root) {
this._io = _io;
this._parent = _parent;
this._root = _root || this;
this._read();
}
MethodTypeCpInfo.prototype._read = function() {
this._unnamed0 = new VersionGuard(this._io, this, this._root, 51);
this.descriptorIndex = this._io.readU2be();
}
return MethodTypeCpInfo;
})();
/**
* @see {@link https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-4.html#jvms-4.4.2|Source}
*/
var InterfaceMethodRefCpInfo = JavaClass.InterfaceMethodRefCpInfo = (function() {
function InterfaceMethodRefCpInfo(_io, _parent, _root) {
this._io = _io;
this._parent = _parent;
this._root = _root || this;
this._read();
}
InterfaceMethodRefCpInfo.prototype._read = function() {
this.classIndex = this._io.readU2be();
this.nameAndTypeIndex = this._io.readU2be();
}
Object.defineProperty(InterfaceMethodRefCpInfo.prototype, 'classAsInfo', {
get: function() {
if (this._m_classAsInfo !== undefined)
return this._m_classAsInfo;
this._m_classAsInfo = this._root.constantPool[(this.classIndex - 1)].cpInfo;
return this._m_classAsInfo;
}
});
Object.defineProperty(InterfaceMethodRefCpInfo.prototype, 'nameAndTypeAsInfo', {
get: function() {
if (this._m_nameAndTypeAsInfo !== undefined)
return this._m_nameAndTypeAsInfo;
this._m_nameAndTypeAsInfo = this._root.constantPool[(this.nameAndTypeIndex - 1)].cpInfo;
return this._m_nameAndTypeAsInfo;
}
});
return InterfaceMethodRefCpInfo;
})();
/**
* @see {@link https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-4.html#jvms-4.4.1|Source}
*/
var ClassCpInfo = JavaClass.ClassCpInfo = (function() {
function ClassCpInfo(_io, _parent, _root) {
this._io = _io;
this._parent = _parent;
this._root = _root || this;
this._read();
}
ClassCpInfo.prototype._read = function() {
this.nameIndex = this._io.readU2be();
}
Object.defineProperty(ClassCpInfo.prototype, 'nameAsInfo', {
get: function() {
if (this._m_nameAsInfo !== undefined)
return this._m_nameAsInfo;
this._m_nameAsInfo = this._root.constantPool[(this.nameIndex - 1)].cpInfo;
return this._m_nameAsInfo;
}
});
Object.defineProperty(ClassCpInfo.prototype, 'nameAsStr', {
get: function() {
if (this._m_nameAsStr !== undefined)
return this._m_nameAsStr;
this._m_nameAsStr = this.nameAsInfo.value;
return this._m_nameAsStr;
}
});
return ClassCpInfo;
})();
/**
* @see {@link https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-4.html#jvms-4.4|Source}
*/
var ConstantPoolEntry = JavaClass.ConstantPoolEntry = (function() {
ConstantPoolEntry.TagEnum = Object.freeze({
UTF8: 1,
INTEGER: 3,
FLOAT: 4,
LONG: 5,
DOUBLE: 6,
CLASS_TYPE: 7,
STRING: 8,
FIELD_REF: 9,
METHOD_REF: 10,
INTERFACE_METHOD_REF: 11,
NAME_AND_TYPE: 12,
METHOD_HANDLE: 15,
METHOD_TYPE: 16,
DYNAMIC: 17,
INVOKE_DYNAMIC: 18,
MODULE: 19,
PACKAGE: 20,
1: "UTF8",
3: "INTEGER",
4: "FLOAT",
5: "LONG",
6: "DOUBLE",
7: "CLASS_TYPE",
8: "STRING",
9: "FIELD_REF",
10: "METHOD_REF",
11: "INTERFACE_METHOD_REF",
12: "NAME_AND_TYPE",
15: "METHOD_HANDLE",
16: "METHOD_TYPE",
17: "DYNAMIC",
18: "INVOKE_DYNAMIC",
19: "MODULE",
20: "PACKAGE",
});
function ConstantPoolEntry(_io, _parent, _root, isPrevTwoEntries) {
this._io = _io;
this._parent = _parent;
this._root = _root || this;
this.isPrevTwoEntries = isPrevTwoEntries;
this._read();
}
ConstantPoolEntry.prototype._read = function() {
if (!(this.isPrevTwoEntries)) {
this.tag = this._io.readU1();
}
if (!(this.isPrevTwoEntries)) {
switch (this.tag) {
case JavaClass.ConstantPoolEntry.TagEnum.INTERFACE_METHOD_REF:
this.cpInfo = new InterfaceMethodRefCpInfo(this._io, this, this._root);
break;
case JavaClass.ConstantPoolEntry.TagEnum.CLASS_TYPE:
this.cpInfo = new ClassCpInfo(this._io, this, this._root);
break;
case JavaClass.ConstantPoolEntry.TagEnum.DYNAMIC:
this.cpInfo = new DynamicCpInfo(this._io, this, this._root);
break;
case JavaClass.ConstantPoolEntry.TagEnum.UTF8:
this.cpInfo = new Utf8CpInfo(this._io, this, this._root);
break;
case JavaClass.ConstantPoolEntry.TagEnum.METHOD_TYPE:
this.cpInfo = new MethodTypeCpInfo(this._io, this, this._root);
break;
case JavaClass.ConstantPoolEntry.TagEnum.INTEGER:
this.cpInfo = new IntegerCpInfo(this._io, this, this._root);
break;
case JavaClass.ConstantPoolEntry.TagEnum.STRING:
this.cpInfo = new StringCpInfo(this._io, this, this._root);
break;
case JavaClass.ConstantPoolEntry.TagEnum.FLOAT:
this.cpInfo = new FloatCpInfo(this._io, this, this._root);
break;
case JavaClass.ConstantPoolEntry.TagEnum.MODULE:
this.cpInfo = new ModulePackageCpInfo(this._io, this, this._root);
break;
case JavaClass.ConstantPoolEntry.TagEnum.LONG:
this.cpInfo = new LongCpInfo(this._io, this, this._root);
break;
case JavaClass.ConstantPoolEntry.TagEnum.METHOD_REF:
this.cpInfo = new MethodRefCpInfo(this._io, this, this._root);
break;
case JavaClass.ConstantPoolEntry.TagEnum.DOUBLE:
this.cpInfo = new DoubleCpInfo(this._io, this, this._root);
break;
case JavaClass.ConstantPoolEntry.TagEnum.INVOKE_DYNAMIC:
this.cpInfo = new InvokeDynamicCpInfo(this._io, this, this._root);
break;
case JavaClass.ConstantPoolEntry.TagEnum.FIELD_REF:
this.cpInfo = new FieldRefCpInfo(this._io, this, this._root);
break;
case JavaClass.ConstantPoolEntry.TagEnum.METHOD_HANDLE:
this.cpInfo = new MethodHandleCpInfo(this._io, this, this._root);
break;
case JavaClass.ConstantPoolEntry.TagEnum.PACKAGE:
this.cpInfo = new ModulePackageCpInfo(this._io, this, this._root);
break;
case JavaClass.ConstantPoolEntry.TagEnum.NAME_AND_TYPE:
this.cpInfo = new NameAndTypeCpInfo(this._io, this, this._root);
break;
}
}
}
Object.defineProperty(ConstantPoolEntry.prototype, 'isTwoEntries', {
get: function() {
if (this._m_isTwoEntries !== undefined)
return this._m_isTwoEntries;
this._m_isTwoEntries = (this.isPrevTwoEntries ? false : ((this.tag == JavaClass.ConstantPoolEntry.TagEnum.LONG) || (this.tag == JavaClass.ConstantPoolEntry.TagEnum.DOUBLE)) );
return this._m_isTwoEntries;
}
});
return ConstantPoolEntry;
})();
/**
* @see {@link https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-4.html#jvms-4.6|Source}
*/
var MethodInfo = JavaClass.MethodInfo = (function() {
function MethodInfo(_io, _parent, _root) {
this._io = _io;
this._parent = _parent;
this._root = _root || this;
this._read();
}
MethodInfo.prototype._read = function() {
this.accessFlags = this._io.readU2be();
this.nameIndex = this._io.readU2be();
this.descriptorIndex = this._io.readU2be();
this.attributesCount = this._io.readU2be();
this.attributes = [];
for (var i = 0; i < this.attributesCount; i++) {
this.attributes.push(new AttributeInfo(this._io, this, this._root));
}
}
Object.defineProperty(MethodInfo.prototype, 'nameAsStr', {
get: function() {
if (this._m_nameAsStr !== undefined)
return this._m_nameAsStr;
this._m_nameAsStr = this._root.constantPool[(this.nameIndex - 1)].cpInfo.value;
return this._m_nameAsStr;
}
});
return MethodInfo;
})();
/**
* @see {@link https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-4.html#jvms-4.4.4|Source}
*/
var IntegerCpInfo = JavaClass.IntegerCpInfo = (function() {
function IntegerCpInfo(_io, _parent, _root) {
this._io = _io;
this._parent = _parent;
this._root = _root || this;
this._read();
}
IntegerCpInfo.prototype._read = function() {
this.value = this._io.readU4be();
}
return IntegerCpInfo;
})();
/**
* @see {@link https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-4.html#jvms-4.4.2|Source}
*/
var FieldRefCpInfo = JavaClass.FieldRefCpInfo = (function() {
function FieldRefCpInfo(_io, _parent, _root) {
this._io = _io;
this._parent = _parent;
this._root = _root || this;
this._read();
}
FieldRefCpInfo.prototype._read = function() {
this.classIndex = this._io.readU2be();
this.nameAndTypeIndex = this._io.readU2be();
}
Object.defineProperty(FieldRefCpInfo.prototype, 'classAsInfo', {
get: function() {
if (this._m_classAsInfo !== undefined)
return this._m_classAsInfo;
this._m_classAsInfo = this._root.constantPool[(this.classIndex - 1)].cpInfo;
return this._m_classAsInfo;
}
});
Object.defineProperty(FieldRefCpInfo.prototype, 'nameAndTypeAsInfo', {
get: function() {
if (this._m_nameAndTypeAsInfo !== undefined)
return this._m_nameAndTypeAsInfo;
this._m_nameAndTypeAsInfo = this._root.constantPool[(this.nameAndTypeIndex - 1)].cpInfo;
return this._m_nameAndTypeAsInfo;
}
});
return FieldRefCpInfo;
})();
return JavaClass;
})();
return JavaClass;
}));