com.alibaba.fastjson2.internal.asm

Class ClassWriter

java.lang.Object

com.alibaba.fastjson2.internal.asm.ClassWriter

public class ClassWriter
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field and Description
private int	accessFlags
private FieldWriter	firstField The fields of this class, stored in a linked list of FieldWriter linked via their FieldWriter.fv field.
private MethodWriter	firstMethod
private int	interfaceCount The interface_count field of the JVMS ClassFile structure.
private int[]	interfaces The 'interfaces' array of the JVMS ClassFile structure.
private FieldWriter	lastField The fields of this class, stored in a linked list of FieldWriter linked via their FieldWriter.fv field.
private MethodWriter	lastMethod
private int	superClass The super_class field of the JVMS ClassFile structure.
private SymbolTable	symbolTable The symbol table for this class (contains the constant_pool and the BootstrapMethods).
private int	thisClass The this_class field of the JVMS ClassFile structure.
private java.util.function.Function<java.lang.String,java.lang.Class>	typeProvider
private int	version The minor_version and major_version fields of the JVMS ClassFile structure.

Constructor Summary

Constructors

Constructor and Description
ClassWriter(java.util.function.Function<java.lang.String,java.lang.Class> typeProvider)

Method Summary

Modifier and Type	Method and Description
protected java.lang.String	getCommonSuperClass(java.lang.String type1, java.lang.String type2) Returns the common super type of the two given types.
protected java.lang.Class	loadClass(java.lang.String type)
byte[]	toByteArray() Returns the content of the class file that was built by this ClassWriter.
void	visit(int version, int access, java.lang.String name, java.lang.String superName, java.lang.String[] interfaces)
FieldWriter	visitField(int access, java.lang.String name, java.lang.String descriptor)
MethodWriter	visitMethod(int access, java.lang.String name, java.lang.String descriptor, int codeInitCapacity)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

typeProvider

private final java.util.function.Function<java.lang.String,java.lang.Class> typeProvider

version

private int version

The minor_version and major_version fields of the JVMS ClassFile structure. minor_version is stored in the 16 most significant bits, and major_version in the 16 least significant bits.

symbolTable

private final SymbolTable symbolTable

The symbol table for this class (contains the constant_pool and the BootstrapMethods).

accessFlags

private int accessFlags

thisClass

private int thisClass

The this_class field of the JVMS ClassFile structure.

superClass

private int superClass

The super_class field of the JVMS ClassFile structure.

interfaceCount

private int interfaceCount

The interface_count field of the JVMS ClassFile structure.

interfaces

private int[] interfaces

The 'interfaces' array of the JVMS ClassFile structure.

firstField

private FieldWriter firstField

The fields of this class, stored in a linked list of FieldWriter linked via their FieldWriter.fv field. This field stores the first element of this list.

lastField

private FieldWriter lastField

The fields of this class, stored in a linked list of FieldWriter linked via their FieldWriter.fv field. This field stores the last element of this list.

firstMethod

private MethodWriter firstMethod

lastMethod

private MethodWriter lastMethod

Constructor Detail

ClassWriter

public ClassWriter(java.util.function.Function<java.lang.String,java.lang.Class> typeProvider)

Method Detail

visit

public final void visit(int version,
                        int access,
                        java.lang.String name,
                        java.lang.String superName,
                        java.lang.String[] interfaces)

visitField

public final FieldWriter visitField(int access,
                                    java.lang.String name,
                                    java.lang.String descriptor)

visitMethod

public final MethodWriter visitMethod(int access,
                                      java.lang.String name,
                                      java.lang.String descriptor,
                                      int codeInitCapacity)

toByteArray

public byte[] toByteArray()

Returns the content of the class file that was built by this ClassWriter.

Returns:

the binary content of the JVMS ClassFile structure that was built by this ClassWriter.

loadClass

protected java.lang.Class loadClass(java.lang.String type)

getCommonSuperClass

protected java.lang.String getCommonSuperClass(java.lang.String type1,
                                               java.lang.String type2)

Returns the common super type of the two given types. The default implementation of this method loads the two given classes and uses the java.lang.Class methods to find the common super class. It can be overridden to compute this common super type in other ways, in particular without actually loading any class, or to take into account the class that is currently being generated by this ClassWriter, which can of course not be loaded since it is under construction.

Parameters:

type1 - the internal name of a class.

type2 - the internal name of another class.

Returns:

the internal name of the common super class of the two given classes.