org.mvel2.asm.util

Class ASMifier

java.lang.Object

org.mvel2.asm.util.Printer

org.mvel2.asm.util.ASMifier

public class ASMifier
extends Printer

A Printer that prints the ASM code to generate the classes if visits.

Author:

Eric Bruneton

Field Summary

Fields

Modifier and Type	Field and Description
protected int	id Identifier of the annotation visitor variable in the produced code.
protected Map<Label,String>	labelNames The label names.
protected String	name The name of the visitor variable in the produced code.

Fields inherited from class org.mvel2.asm.util.Printer

api, buf, HANDLE_TAG, OPCODES, text, TYPES

Constructor Summary

Constructors

Modifier	Constructor and Description
	ASMifier() Constructs a new ASMifier.
protected	ASMifier(int api, String name, int id) Constructs a new ASMifier.

Method Summary

Methods

Modifier and Type	Method and Description
protected void	appendConstant(Object cst) Appends a string representation of the given constant to the given buffer.
protected void	appendLabel(Label l) Appends the name of the given label to buf.
protected ASMifier	createASMifier(String name, int id)
protected void	declareLabel(Label l) Appends a declaration of the given label to buf.
static void	main(String[] args) Prints the ASM source code to generate the given class to the standard output.
void	visit(int version, int access, String name, String signature, String superName, String[] interfaces) Class header.
void	visit(String name, Object value) Annotation value.
ASMifier	visitAnnotation(String desc, boolean visible)
ASMifier	visitAnnotation(String name, String desc) Nested annotation value.
ASMifier	visitAnnotationDefault() Method default annotation.
void	visitAnnotationEnd() Annotation end.
ASMifier	visitArray(String name) Annotation array value.
void	visitAttribute(Attribute attr)
ASMifier	visitClassAnnotation(String desc, boolean visible) Class annotation.
void	visitClassAttribute(Attribute attr) Class attribute.
void	visitClassEnd() Class end.
ASMifier	visitClassTypeAnnotation(int typeRef, TypePath typePath, String desc, boolean visible) Class type annotation.
void	visitCode() Method start.
void	visitEnum(String name, String desc, String value) Annotation enum value.
ASMifier	visitField(int access, String name, String desc, String signature, Object value) Class field.
ASMifier	visitFieldAnnotation(String desc, boolean visible) Field annotation.
void	visitFieldAttribute(Attribute attr) Field attribute.
void	visitFieldEnd() Field end.
void	visitFieldInsn(int opcode, String owner, String name, String desc) Method instruction.
ASMifier	visitFieldTypeAnnotation(int typeRef, TypePath typePath, String desc, boolean visible) Field type annotation.
void	visitFrame(int type, int nLocal, Object[] local, int nStack, Object[] stack) Method stack frame.
void	visitIincInsn(int var, int increment) Method instruction.
void	visitInnerClass(String name, String outerName, String innerName, int access) Class inner name.
void	visitInsn(int opcode) Method instruction.
ASMifier	visitInsnAnnotation(int typeRef, TypePath typePath, String desc, boolean visible) Instruction type annotation.
void	visitIntInsn(int opcode, int operand) Method instruction.
void	visitInvokeDynamicInsn(String name, String desc, Handle bsm, Object... bsmArgs) Method instruction.
void	visitJumpInsn(int opcode, Label label) Method instruction.
void	visitLabel(Label label) Method label.
void	visitLdcInsn(Object cst) Method instruction.
void	visitLineNumber(int line, Label start) Method debug info.
void	visitLocalVariable(String name, String desc, String signature, Label start, Label end, int index) Method debug info.
Printer	visitLocalVariableAnnotation(int typeRef, TypePath typePath, Label[] start, Label[] end, int[] index, String desc, boolean visible) Local variable type annotation.
void	visitLookupSwitchInsn(Label dflt, int[] keys, Label[] labels) Method instruction.
void	visitMaxs(int maxStack, int maxLocals) Method max stack and max locals.
ASMifier	visitMethod(int access, String name, String desc, String signature, String[] exceptions) Class method.
ASMifier	visitMethodAnnotation(String desc, boolean visible) Method annotation.
void	visitMethodAttribute(Attribute attr) Method attribute.
void	visitMethodEnd() Method end.
void	visitMethodInsn(int opcode, String owner, String name, String desc) Deprecated.
void	visitMethodInsn(int opcode, String owner, String name, String desc, boolean itf) Method instruction.
ASMifier	visitMethodTypeAnnotation(int typeRef, TypePath typePath, String desc, boolean visible) Method type annotation.
void	visitMultiANewArrayInsn(String desc, int dims) Method instruction.
void	visitOuterClass(String owner, String name, String desc) Class outer class.
void	visitParameter(String parameterName, int access) Method parameter.
ASMifier	visitParameterAnnotation(int parameter, String desc, boolean visible) Method parameter annotation.
void	visitSource(String file, String debug) Class source.
void	visitTableSwitchInsn(int min, int max, Label dflt, Label... labels) Method instruction.
ASMifier	visitTryCatchAnnotation(int typeRef, TypePath typePath, String desc, boolean visible) Try catch block type annotation.
void	visitTryCatchBlock(Label start, Label end, Label handler, String type) Method exception handler.
ASMifier	visitTypeAnnotation(int typeRef, TypePath typePath, String desc, boolean visible)
ASMifier	visitTypeAnnotation(String method, int typeRef, TypePath typePath, String desc, boolean visible)
void	visitTypeInsn(int opcode, String type) Method instruction.
void	visitVarInsn(int opcode, int var) Method instruction.

Methods inherited from class org.mvel2.asm.util.Printer

appendString, getText, print

Methods inherited from class java.lang.Object

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

Field Detail

name

protected final String name

The name of the visitor variable in the produced code.

id

protected final int id

Identifier of the annotation visitor variable in the produced code.

labelNames

protected Map<Label,String> labelNames

The label names. This map associates String values to Label keys. It is used only in ASMifierMethodVisitor.

Constructor Detail

ASMifier

public ASMifier()

Constructs a new ASMifier. Subclasses must not use this constructor. Instead, they must use the ASMifier(int, String, int) version.

Throws:

IllegalStateException - If a subclass calls this constructor.

ASMifier

protected ASMifier(int api,
        String name,
        int id)

Constructs a new ASMifier.

Parameters:

api - the ASM API version implemented by this class. Must be one of Opcodes.ASM4 or Opcodes.ASM5.

name - the name of the visitor variable in the produced code.

id - identifier of the annotation visitor variable in the produced code.

Method Detail

main

public static void main(String[] args)
                 throws Exception

Prints the ASM source code to generate the given class to the standard output.

Usage: ASMifier [-debug] <binary class name or class file name>

Parameters:

args - the command line arguments.

Throws:

Exception - if the class cannot be found, or if an IO exception occurs.

visit

public void visit(int version,
         int access,
         String name,
         String signature,
         String superName,
         String[] interfaces)

Description copied from class: Printer

Class header. See ClassVisitor.visit(int, int, java.lang.String, java.lang.String, java.lang.String, java.lang.String[]).

Specified by:

visit in class Printer

visitSource

public void visitSource(String file,
               String debug)

Description copied from class: Printer

Class source. See ClassVisitor.visitSource(java.lang.String, java.lang.String).

Specified by:

visitSource in class Printer

visitOuterClass

public void visitOuterClass(String owner,
                   String name,
                   String desc)

Description copied from class: Printer

Class outer class. See ClassVisitor.visitOuterClass(java.lang.String, java.lang.String, java.lang.String).

Specified by:

visitOuterClass in class Printer

visitClassAnnotation

public ASMifier visitClassAnnotation(String desc,
                            boolean visible)

Description copied from class: Printer

Class annotation. See ClassVisitor.visitAnnotation(java.lang.String, boolean).

Specified by:

visitClassAnnotation in class Printer

visitClassTypeAnnotation

public ASMifier visitClassTypeAnnotation(int typeRef,
                                TypePath typePath,
                                String desc,
                                boolean visible)

Description copied from class: Printer

Class type annotation. See ClassVisitor.visitTypeAnnotation(int, org.mvel2.asm.TypePath, java.lang.String, boolean).

Overrides:

visitClassTypeAnnotation in class Printer

visitClassAttribute

public void visitClassAttribute(Attribute attr)

Description copied from class: Printer

Class attribute. See ClassVisitor.visitAttribute(org.mvel2.asm.Attribute).

Specified by:

visitClassAttribute in class Printer

visitInnerClass

public void visitInnerClass(String name,
                   String outerName,
                   String innerName,
                   int access)

Description copied from class: Printer

Class inner name. See ClassVisitor.visitInnerClass(java.lang.String, java.lang.String, java.lang.String, int).

Specified by:

visitInnerClass in class Printer

visitField

public ASMifier visitField(int access,
                  String name,
                  String desc,
                  String signature,
                  Object value)

Description copied from class: Printer

Class field. See ClassVisitor.visitField(int, java.lang.String, java.lang.String, java.lang.String, java.lang.Object).

Specified by:

visitField in class Printer

visitMethod

public ASMifier visitMethod(int access,
                   String name,
                   String desc,
                   String signature,
                   String[] exceptions)

Description copied from class: Printer

Class method. See ClassVisitor.visitMethod(int, java.lang.String, java.lang.String, java.lang.String, java.lang.String[]).

Specified by:

visitMethod in class Printer

visitClassEnd

public void visitClassEnd()

Description copied from class: Printer

Class end. See ClassVisitor.visitEnd().

Specified by:

visitClassEnd in class Printer

visit

public void visit(String name,
         Object value)

Description copied from class: Printer

Annotation value. See AnnotationVisitor.visit(java.lang.String, java.lang.Object).

Specified by:

visit in class Printer

visitEnum

public void visitEnum(String name,
             String desc,
             String value)

Description copied from class: Printer

Annotation enum value. See AnnotationVisitor.visitEnum(java.lang.String, java.lang.String, java.lang.String).

Specified by:

visitEnum in class Printer

visitAnnotation

public ASMifier visitAnnotation(String name,
                       String desc)

Description copied from class: Printer

Nested annotation value. See AnnotationVisitor.visitAnnotation(java.lang.String, java.lang.String).

Specified by:

visitAnnotation in class Printer

visitArray

public ASMifier visitArray(String name)

Description copied from class: Printer

Annotation array value. See AnnotationVisitor.visitArray(java.lang.String).

Specified by:

visitArray in class Printer

visitAnnotationEnd

public void visitAnnotationEnd()

Description copied from class: Printer

Annotation end. See AnnotationVisitor.visitEnd().

Specified by:

visitAnnotationEnd in class Printer

visitFieldAnnotation

public ASMifier visitFieldAnnotation(String desc,
                            boolean visible)

Description copied from class: Printer

Field annotation. See FieldVisitor.visitAnnotation(java.lang.String, boolean).

Specified by:

visitFieldAnnotation in class Printer

visitFieldTypeAnnotation

public ASMifier visitFieldTypeAnnotation(int typeRef,
                                TypePath typePath,
                                String desc,
                                boolean visible)

Description copied from class: Printer

Field type annotation. See FieldVisitor.visitTypeAnnotation(int, org.mvel2.asm.TypePath, java.lang.String, boolean).

Overrides:

visitFieldTypeAnnotation in class Printer

visitFieldAttribute

public void visitFieldAttribute(Attribute attr)

Description copied from class: Printer

Field attribute. See FieldVisitor.visitAttribute(org.mvel2.asm.Attribute).

Specified by:

visitFieldAttribute in class Printer

visitFieldEnd

public void visitFieldEnd()

Description copied from class: Printer

Field end. See FieldVisitor.visitEnd().

Specified by:

visitFieldEnd in class Printer

visitParameter

public void visitParameter(String parameterName,
                  int access)

Description copied from class: Printer

Method parameter. See MethodVisitor.visitParameter(String, int).

Overrides:

visitParameter in class Printer

visitAnnotationDefault

public ASMifier visitAnnotationDefault()

Description copied from class: Printer

Method default annotation. See MethodVisitor.visitAnnotationDefault().

Specified by:

visitAnnotationDefault in class Printer

visitMethodAnnotation

public ASMifier visitMethodAnnotation(String desc,
                             boolean visible)

Description copied from class: Printer

Method annotation. See MethodVisitor.visitAnnotation(java.lang.String, boolean).

Specified by:

visitMethodAnnotation in class Printer

visitMethodTypeAnnotation

public ASMifier visitMethodTypeAnnotation(int typeRef,
                                 TypePath typePath,
                                 String desc,
                                 boolean visible)

Description copied from class: Printer

Method type annotation. See MethodVisitor.visitTypeAnnotation(int, org.mvel2.asm.TypePath, java.lang.String, boolean).

Overrides:

visitMethodTypeAnnotation in class Printer

visitParameterAnnotation

public ASMifier visitParameterAnnotation(int parameter,
                                String desc,
                                boolean visible)

Description copied from class: Printer

Method parameter annotation. See MethodVisitor.visitParameterAnnotation(int, java.lang.String, boolean).

Specified by:

visitParameterAnnotation in class Printer

visitMethodAttribute

public void visitMethodAttribute(Attribute attr)

Description copied from class: Printer

Method attribute. See MethodVisitor.visitAttribute(org.mvel2.asm.Attribute).

Specified by:

visitMethodAttribute in class Printer

visitCode

public void visitCode()

Description copied from class: Printer

Method start. See MethodVisitor.visitCode().

Specified by:

visitCode in class Printer

visitFrame

public void visitFrame(int type,
              int nLocal,
              Object[] local,
              int nStack,
              Object[] stack)

Description copied from class: Printer

Method stack frame. See MethodVisitor.visitFrame(int, int, java.lang.Object[], int, java.lang.Object[]).

Specified by:

visitFrame in class Printer

visitInsn

public void visitInsn(int opcode)

Description copied from class: Printer

Method instruction. See MethodVisitor.visitInsn(int) .

Specified by:

visitInsn in class Printer

visitIntInsn

public void visitIntInsn(int opcode,
                int operand)

Description copied from class: Printer

Method instruction. See MethodVisitor.visitIntInsn(int, int).

Specified by:

visitIntInsn in class Printer

visitVarInsn

public void visitVarInsn(int opcode,
                int var)

Description copied from class: Printer

Method instruction. See MethodVisitor.visitVarInsn(int, int).

Specified by:

visitVarInsn in class Printer

visitTypeInsn

public void visitTypeInsn(int opcode,
                 String type)

Description copied from class: Printer

Method instruction. See MethodVisitor.visitTypeInsn(int, java.lang.String).

Specified by:

visitTypeInsn in class Printer

visitFieldInsn

public void visitFieldInsn(int opcode,
                  String owner,
                  String name,
                  String desc)

Description copied from class: Printer

Method instruction. See MethodVisitor.visitFieldInsn(int, java.lang.String, java.lang.String, java.lang.String).

Specified by:

visitFieldInsn in class Printer

visitMethodInsn

@Deprecated
public void visitMethodInsn(int opcode,
                              String owner,
                              String name,
                              String desc)

Deprecated.

Description copied from class: Printer

Method instruction. See MethodVisitor.visitMethodInsn(int, java.lang.String, java.lang.String, java.lang.String).

Overrides:

visitMethodInsn in class Printer

visitMethodInsn

public void visitMethodInsn(int opcode,
                   String owner,
                   String name,
                   String desc,
                   boolean itf)

Description copied from class: Printer

Method instruction. See MethodVisitor.visitMethodInsn(int, java.lang.String, java.lang.String, java.lang.String).

Overrides:

visitMethodInsn in class Printer

visitInvokeDynamicInsn

public void visitInvokeDynamicInsn(String name,
                          String desc,
                          Handle bsm,
                          Object... bsmArgs)

Description copied from class: Printer

Method instruction. See MethodVisitor.visitInvokeDynamicInsn(java.lang.String, java.lang.String, org.mvel2.asm.Handle, java.lang.Object...).

Specified by:

visitInvokeDynamicInsn in class Printer

visitJumpInsn

public void visitJumpInsn(int opcode,
                 Label label)

Description copied from class: Printer

Method instruction. See MethodVisitor.visitJumpInsn(int, org.mvel2.asm.Label).

Specified by:

visitJumpInsn in class Printer

visitLabel

public void visitLabel(Label label)

Description copied from class: Printer

Method label. See MethodVisitor.visitLabel(org.mvel2.asm.Label).

Specified by:

visitLabel in class Printer

visitLdcInsn

public void visitLdcInsn(Object cst)

Description copied from class: Printer

Method instruction. See MethodVisitor.visitLdcInsn(java.lang.Object).

Specified by:

visitLdcInsn in class Printer

visitIincInsn

public void visitIincInsn(int var,
                 int increment)

Description copied from class: Printer

Method instruction. See MethodVisitor.visitIincInsn(int, int).

Specified by:

visitIincInsn in class Printer

visitTableSwitchInsn

public void visitTableSwitchInsn(int min,
                        int max,
                        Label dflt,
                        Label... labels)

Description copied from class: Printer

Method instruction. See MethodVisitor.visitTableSwitchInsn(int, int, org.mvel2.asm.Label, org.mvel2.asm.Label...).

Specified by:

visitTableSwitchInsn in class Printer

visitLookupSwitchInsn

public void visitLookupSwitchInsn(Label dflt,
                         int[] keys,
                         Label[] labels)

Description copied from class: Printer

Method instruction. See MethodVisitor.visitLookupSwitchInsn(org.mvel2.asm.Label, int[], org.mvel2.asm.Label[]).

Specified by:

visitLookupSwitchInsn in class Printer

visitMultiANewArrayInsn

public void visitMultiANewArrayInsn(String desc,
                           int dims)

Description copied from class: Printer

Method instruction. See MethodVisitor.visitMultiANewArrayInsn(java.lang.String, int).

Specified by:

visitMultiANewArrayInsn in class Printer

visitInsnAnnotation

public ASMifier visitInsnAnnotation(int typeRef,
                           TypePath typePath,
                           String desc,
                           boolean visible)

Description copied from class: Printer

Instruction type annotation. See MethodVisitor.visitInsnAnnotation(int, org.mvel2.asm.TypePath, java.lang.String, boolean).

Overrides:

visitInsnAnnotation in class Printer

visitTryCatchBlock

public void visitTryCatchBlock(Label start,
                      Label end,
                      Label handler,
                      String type)

Description copied from class: Printer

Method exception handler. See MethodVisitor.visitTryCatchBlock(org.mvel2.asm.Label, org.mvel2.asm.Label, org.mvel2.asm.Label, java.lang.String).

Specified by:

visitTryCatchBlock in class Printer

visitTryCatchAnnotation

public ASMifier visitTryCatchAnnotation(int typeRef,
                               TypePath typePath,
                               String desc,
                               boolean visible)

Description copied from class: Printer

Try catch block type annotation. See MethodVisitor.visitTryCatchAnnotation(int, org.mvel2.asm.TypePath, java.lang.String, boolean).

Overrides:

visitTryCatchAnnotation in class Printer

visitLocalVariable

public void visitLocalVariable(String name,
                      String desc,
                      String signature,
                      Label start,
                      Label end,
                      int index)

Description copied from class: Printer

Method debug info. See MethodVisitor.visitLocalVariable(java.lang.String, java.lang.String, java.lang.String, org.mvel2.asm.Label, org.mvel2.asm.Label, int).

Specified by:

visitLocalVariable in class Printer

visitLocalVariableAnnotation

public Printer visitLocalVariableAnnotation(int typeRef,
                                   TypePath typePath,
                                   Label[] start,
                                   Label[] end,
                                   int[] index,
                                   String desc,
                                   boolean visible)

Description copied from class: Printer

Local variable type annotation. See MethodVisitor.visitTryCatchAnnotation(int, org.mvel2.asm.TypePath, java.lang.String, boolean).

Overrides:

visitLocalVariableAnnotation in class Printer

visitLineNumber

public void visitLineNumber(int line,
                   Label start)

Description copied from class: Printer

Method debug info. See MethodVisitor.visitLineNumber(int, org.mvel2.asm.Label).

Specified by:

visitLineNumber in class Printer

visitMaxs

public void visitMaxs(int maxStack,
             int maxLocals)

Description copied from class: Printer

Method max stack and max locals. See MethodVisitor.visitMaxs(int, int).

Specified by:

visitMaxs in class Printer

visitMethodEnd

public void visitMethodEnd()

Description copied from class: Printer

Method end. See MethodVisitor.visitEnd().

Specified by:

visitMethodEnd in class Printer

visitAnnotation

public ASMifier visitAnnotation(String desc,
                       boolean visible)

visitTypeAnnotation

public ASMifier visitTypeAnnotation(int typeRef,
                           TypePath typePath,
                           String desc,
                           boolean visible)

visitTypeAnnotation

public ASMifier visitTypeAnnotation(String method,
                           int typeRef,
                           TypePath typePath,
                           String desc,
                           boolean visible)

visitAttribute

public void visitAttribute(Attribute attr)

createASMifier

protected ASMifier createASMifier(String name,
                      int id)

appendConstant

protected void appendConstant(Object cst)

Appends a string representation of the given constant to the given buffer.

Parameters:

cst - an Integer, Float, Long, Double or String object. May be null.

declareLabel

protected void declareLabel(Label l)

Appends a declaration of the given label to buf. This declaration is of the form "Label lXXX = new Label();". Does nothing if the given label has already been declared.

Parameters:

l - a label.

appendLabel

protected void appendLabel(Label l)

Appends the name of the given label to buf. The given label must already have a name. One way to ensure this is to always call declared before calling this method.

Parameters:

l - a label.