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 Go to latest Published: Jun 19, 2019 License: Apache-2.0 Imports: 6 Imported by: 0

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Index

Constants

View Source 
const (
	ACC_PUBLIC       = 0x0001 // class field method
	ACC_PRIVATE      = 0x0002 //       field method
	ACC_PROTECTED    = 0x0004 //       field method
	ACC_STATIC       = 0x0008 //       field method
	ACC_FINAL        = 0x0010 // class field method
	ACC_SUPER        = 0x0020 // class
	ACC_SYNCHRONIZED = 0x0020 //             method
	ACC_VOLATILE     = 0x0040 //       field
	ACC_BRIDGE       = 0x0040 //             method
	ACC_TRANSIENT    = 0x0080 //       field
	ACC_VARARGS      = 0x0080 //             method
	ACC_NATIVE       = 0x0100 //             method
	ACC_INTERFACE    = 0x0200 // class
	ACC_ABSTRACT     = 0x0400 // class       method
	ACC_STRICT       = 0x0800 //             method
	ACC_SYNTHETIC    = 0x1000 // class field method
	ACC_ANNOTATION   = 0x2000 // class
	ACC_ENUM         = 0x4000 // class field
)

Variables

This section is empty.

Functions

func ArrayCopy 

func ArrayCopy(src, dest *Object, srcPos, dstPos, length int32)

func GoString 

func GoString(jStr *Object) string

java.lang.String -> go string

Types

type Class 

type Class struct {

	//实例变量(及private String name)占据的空间大小
	InstanceSlotCount uint
	// contains filtered or unexported fields
}

* 

我们需要注意一下JVM中的class
我们这里的class，是运行时常量池里的class

我们的java.lang.Class 继承 java.lang.Object
java.lang.Object.class 又需要有一个 java.lang.Class（java.lang.Object.class 是存放在堆内存中的，相当于java.lang.Class的实例）
那么问题来了，是现有的java.lang.Object还是先有的java.lang.Class

这种问题，非常类似于spring解决set方式的循环依赖，都是通过在“混沌态”的时候解决问题。
JVM也是这样的，在这两个class在运行时常量池中还没完全初始化的时候，暴露出引用，来解决这个问题，这样我们就有了java世界里最最基础的两个class

*

func (*Class) ArrayClass 

func (self *Class) ArrayClass() *Class

func (*Class) ComponentClass 

func (self *Class) ComponentClass() *Class

func (*Class) ConstantPool 

func (self *Class) ConstantPool() *ConstantPool

getters start

func (*Class) Fields 

func (self *Class) Fields() []*Field

func (*Class) GetClinitMethod 

func (self *Class) GetClinitMethod() *Method

func (*Class) GetInstanceMethod 

func (self *Class) GetInstanceMethod(name, descriptor string) *Method

func (*Class) GetMainMethod 

func (self *Class) GetMainMethod() *Method

func (*Class) GetPackageName 

func (self *Class) GetPackageName() string

func (*Class) GetRefVar 

func (self *Class) GetRefVar(fieldName, fieldDescriptor string) *Object

func (*Class) InitStarted 

func (self *Class) InitStarted() bool

func (*Class) IsAbstract 

func (self *Class) IsAbstract() bool

func (*Class) IsAnnotation 

func (self *Class) IsAnnotation() bool

func (*Class) IsArray 

func (self *Class) IsArray() bool

func (*Class) IsAssignableFrom 

func (self *Class) IsAssignableFrom(other *Class) bool

* 

一个类是否是可以看成是另外一个

func (*Class) IsEnum 

func (self *Class) IsEnum() bool

func (*Class) IsFinal 

func (self *Class) IsFinal() bool

func (*Class) IsImplements 

func (self *Class) IsImplements(iface *Class) bool

self implements iface

func (*Class) IsInterface 

func (self *Class) IsInterface() bool

func (*Class) IsPrimitive 

func (self *Class) IsPrimitive() bool

* 是否是基本类型

func (*Class) IsPublic 

func (self *Class) IsPublic() bool

func (*Class) IsSubClassOf 

func (self *Class) IsSubClassOf(other *Class) bool

self extends other

func (*Class) IsSuper 

func (self *Class) IsSuper() bool

func (*Class) IsSuperClassOf 

func (self *Class) IsSuperClassOf(other *Class) bool

other extends self

func (*Class) IsSynthetic 

func (self *Class) IsSynthetic() bool

func (*Class) JClass 

func (self *Class) JClass() *Object

func (*Class) JavaName 

func (self *Class) JavaName() string

func (*Class) Loader 

func (self *Class) Loader() *ClassLoader

func (*Class) Methods 

func (self *Class) Methods() []*Method

func (*Class) Name 

func (self *Class) Name() string

func (*Class) NewArray 

func (self *Class) NewArray(count uint) *Object

func (*Class) NewObject 

func (self *Class) NewObject() *Object

func (*Class) SetRefVar 

func (self *Class) SetRefVar(fieldName, fieldDescriptor string, ref *Object)

func (*Class) SourceFile 

func (self *Class) SourceFile() string

func (*Class) StartInit 

func (self *Class) StartInit()

func (*Class) StaticVars 

func (self *Class) StaticVars() Slots

func (*Class) SuperClass 

func (self *Class) SuperClass() *Class

type ClassLoader 

type ClassLoader struct {
	// contains filtered or unexported fields
}

func NewClassLoader 

func NewClassLoader(cp *classpath.Classpath, verboseFlag bool) *ClassLoader

func (*ClassLoader) LoadClass 

func (self *ClassLoader) LoadClass(name string) *Class

type ClassMember 

type ClassMember struct {
	// contains filtered or unexported fields
}

* 

存放字段和方法公有的信息

func (*ClassMember) Class 

func (self *ClassMember) Class() *Class

func (*ClassMember) Descriptor 

func (self *ClassMember) Descriptor() string

func (*ClassMember) IsFinal 

func (self *ClassMember) IsFinal() bool

func (*ClassMember) IsPrivate 

func (self *ClassMember) IsPrivate() bool

func (*ClassMember) IsProtected 

func (self *ClassMember) IsProtected() bool

func (*ClassMember) IsPublic 

func (self *ClassMember) IsPublic() bool

func (*ClassMember) IsStatic 

func (self *ClassMember) IsStatic() bool

func (*ClassMember) IsSynthetic 

func (self *ClassMember) IsSynthetic() bool

func (*ClassMember) Name 

func (self *ClassMember) Name() string

getters

type ClassRef 

type ClassRef struct {
	SymRef
}

type Constant 

type Constant interface {
}

能存放任何类型

type ConstantPool 

type ConstantPool struct {
	// contains filtered or unexported fields
}

func (*ConstantPool) GetConstant 

func (self *ConstantPool) GetConstant(index uint) Constant

* 

根据索引返回常量

type ExceptionHandler 

type ExceptionHandler struct {
	// contains filtered or unexported fields
}

* 

异常处理器

type ExceptionTable 

type ExceptionTable []*ExceptionHandler

type Field 

type Field struct {
	//继承自ClassMember，字段和方法都属于类的成员
	ClassMember
	// contains filtered or unexported fields
}

func (*Field) ConstValueIndex 

func (self *Field) ConstValueIndex() uint

func (*Field) SlotId 

func (self *Field) SlotId() uint

type FieldRef 

type FieldRef struct {
	MemberRef
	// contains filtered or unexported fields
}

func (*FieldRef) ResolvedField 

func (self *FieldRef) ResolvedField() *Field

* 

解析字段

type InterfaceMethodRef 

type InterfaceMethodRef struct {
	MemberRef
	// contains filtered or unexported fields
}

func (*InterfaceMethodRef) ResolvedInterfaceMethod 

func (self *InterfaceMethodRef) ResolvedInterfaceMethod() *Method

type MemberRef 

type MemberRef struct {
	SymRef
	// contains filtered or unexported fields
}

* 

存放字段和方法符号引用公有的信息

func (*MemberRef) Descriptor 

func (self *MemberRef) Descriptor() string

func (*MemberRef) Name 

func (self *MemberRef) Name() string

type Method 

type Method struct {
	//继承自ClassMember，字段和方法都属于类的成员
	ClassMember
	// contains filtered or unexported fields
}

func LookupMethodInClass 

func LookupMethodInClass(class *Class, name, descriptor string) *Method

* 

从父类中找方法

func (*Method) ArgSlotCount 

func (self *Method) ArgSlotCount() uint

func (*Method) Code 

func (self *Method) Code() []byte

func (*Method) FindExceptionHandler 

func (self *Method) FindExceptionHandler(exClass *Class, pc int) int

* 

从方法的异常表中找异常处理器

func (*Method) GetLineNumber 

func (self *Method) GetLineNumber(pc int) int

* 

方法没有行号表，返回-1
本地方法没有字节码，返回-2

func (*Method) IsAbstract 

func (self *Method) IsAbstract() bool

func (*Method) IsBridge 

func (self *Method) IsBridge() bool

func (*Method) IsNative 

func (self *Method) IsNative() bool

func (*Method) IsStrict 

func (self *Method) IsStrict() bool

func (*Method) IsSynchronized 

func (self *Method) IsSynchronized() bool

func (*Method) IsVarargs 

func (self *Method) IsVarargs() bool

func (*Method) MaxLocals 

func (method *Method) MaxLocals() uint

func (*Method) MaxStack 

func (method *Method) MaxStack() uint

type MethodDescriptor 

type MethodDescriptor struct {
	// contains filtered or unexported fields
}

type MethodDescriptorParser 

type MethodDescriptorParser struct {
	// contains filtered or unexported fields
}

type MethodRef 

type MethodRef struct {
	MemberRef
	// contains filtered or unexported fields
}

func (*MethodRef) ResolvedMethod 

func (self *MethodRef) ResolvedMethod() *Method

type Object 

type Object struct {
	// contains filtered or unexported fields
}

func InternString 

func InternString(str *Object) *Object

* 

intern方法

func JString 

func JString(loader *ClassLoader, goStr string) *Object

func (*Object) ArrayLength 

func (self *Object) ArrayLength() int32

* 

数组长度

func (*Object) Bytes 

func (self *Object) Bytes() []int8

* 

将使用int8型来标识boolean类型

func (*Object) Chars 

func (self *Object) Chars() []uint16

func (*Object) Class 

func (self *Object) Class() *Class

func (*Object) Clone 

func (self *Object) Clone() *Object

func (*Object) Doubles 

func (self *Object) Doubles() []float64

func (*Object) Extra 

func (self *Object) Extra() interface{}

func (*Object) Fields 

func (self *Object) Fields() Slots

getter start

func (*Object) Floats 

func (self *Object) Floats() []float32

func (*Object) GetRefVar 

func (self *Object) GetRefVar(name, descriptor string) *Object

* 

获取一个对象中的某个字段的值

func (*Object) Ints 

func (self *Object) Ints() []int32

func (*Object) IsInstanceOf 

func (self *Object) IsInstanceOf(class *Class) bool

func (*Object) Longs 

func (self *Object) Longs() []int64

func (*Object) Refs 

func (self *Object) Refs() []*Object

func (*Object) SetExtra 

func (self *Object) SetExtra(extra interface{})

func (*Object) SetRefVar 

func (self *Object) SetRefVar(name, descriptor string, ref *Object)

reflection

func (*Object) Shorts 

func (self *Object) Shorts() []int16

type Slot 

type Slot struct {
	//虚拟机规范要求每个元素至少可以容纳一个int或引用，这里存放int，下面ref存放引用
	//连续两个Slot可以存放double、long
	Num int32
	//引用
	Ref *Object
}

type Slots 

type Slots []Slot

func NewSlots 

func NewSlots(slotCount uint) Slots

func (Slots) GetDouble 

func (self Slots) GetDouble(index uint) float64

func (Slots) GetFloat 

func (self Slots) GetFloat(index uint) float32

func (Slots) GetInt 

func (self Slots) GetInt(index uint) int32

func (Slots) GetLong 

func (self Slots) GetLong(index uint) int64

func (Slots) GetRef 

func (self Slots) GetRef(index uint) *Object

func (Slots) SetDouble 

func (self Slots) SetDouble(index uint, val float64)

double consumes two slots

func (Slots) SetFloat 

func (self Slots) SetFloat(index uint, val float32)

func (Slots) SetInt 

func (self Slots) SetInt(index uint, val int32)

func (Slots) SetLong 

func (self Slots) SetLong(index uint, val int64)

long consumes two slots

func (Slots) SetRef 

func (self Slots) SetRef(index uint, ref *Object)

type SymRef 

type SymRef struct {
	// contains filtered or unexported fields
}

* 

类、字段、方法和接口符号的引用引用 都是常量
运行时常量池主要存放两类信息：字面量 和 符号引用
字面量包括：整数、浮点数和字符串字面量
符号引用包括：类符号引用、字段符号引用、方法符号引用和接口符号引用

func (*SymRef) ResolvedClass 

func (self *SymRef) ResolvedClass() *Class

Source Files

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