org.mvel2.asm.util
Class Printer

java.lang.Object
  org.mvel2.asm.util.Printer

Direct Known Subclasses:

ASMifier, Textifier

public abstract class Printer
extends Object

An abstract converter from visit events to text.

Author:

Eric Bruneton

Field Summary

protected int	api The ASM API version implemented by this class.
protected StringBuffer	buf A buffer that can be used to create strings.
static String[]	HANDLE_TAG The names of the tag field values for org.objectweb.asm.Handle.
static String[]	OPCODES The names of the Java Virtual Machine opcodes.
List<Object>	text The text to be printed.
static String[]	TYPES The names of the for operand parameter values of the org.objectweb.asm.MethodVisitor#visitIntInsn method when opcode is NEWARRAY.

Constructor Summary

protected

Printer(int api) Constructs a new Printer.

Method Summary

static void	appendString(StringBuffer buf, String s) Appends a quoted string to a given buffer.
List<Object>	getText() Returns the text constructed by this visitor.
void	print(PrintWriter pw) Prints the text constructed by this visitor.
abstract void	visit(int version, int access, String name, String signature, String superName, String[] interfaces) Class header.
abstract void	visit(String name, Object value) Annotation value.
abstract Printer	visitAnnotation(String name, String desc) Nested annotation value.
abstract Printer	visitAnnotationDefault() Method default annotation.
abstract void	visitAnnotationEnd() Annotation end.
abstract Printer	visitArray(String name) Annotation array value.
abstract Printer	visitClassAnnotation(String desc, boolean visible) Class annotation.
abstract void	visitClassAttribute(Attribute attr) Class attribute.
abstract void	visitClassEnd() Class end.
Printer	visitClassTypeAnnotation(int typeRef, TypePath typePath, String desc, boolean visible) Class type annotation.
abstract void	visitCode() Method start.
abstract void	visitEnum(String name, String desc, String value) Annotation enum value.
void	visitExport(String packaze, int access, String... modules)
abstract Printer	visitField(int access, String name, String desc, String signature, Object value) Class field.
abstract Printer	visitFieldAnnotation(String desc, boolean visible) Field annotation.
abstract void	visitFieldAttribute(Attribute attr) Field attribute.
abstract void	visitFieldEnd() Field end.
abstract void	visitFieldInsn(int opcode, String owner, String name, String desc) Method instruction.
Printer	visitFieldTypeAnnotation(int typeRef, TypePath typePath, String desc, boolean visible) Field type annotation.
abstract void	visitFrame(int type, int nLocal, Object[] local, int nStack, Object[] stack) Method stack frame.
abstract void	visitIincInsn(int var, int increment) Method instruction.
abstract void	visitInnerClass(String name, String outerName, String innerName, int access) Class inner name.
abstract void	visitInsn(int opcode) Method instruction.
Printer	visitInsnAnnotation(int typeRef, TypePath typePath, String desc, boolean visible) Instruction type annotation.
abstract void	visitIntInsn(int opcode, int operand) Method instruction.
abstract void	visitInvokeDynamicInsn(String name, String desc, Handle bsm, Object... bsmArgs) Method instruction.
abstract void	visitJumpInsn(int opcode, Label label) Method jump instruction.
abstract void	visitLabel(Label label) Method label.
abstract void	visitLdcInsn(Object cst) Method instruction.
abstract void	visitLineNumber(int line, Label start) Method debug info.
abstract 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.
abstract void	visitLookupSwitchInsn(Label dflt, int[] keys, Label[] labels) Method instruction.
void	visitMainClass(String mainClass)
abstract void	visitMaxs(int maxStack, int maxLocals) Method max stack and max locals.
abstract Printer	visitMethod(int access, String name, String desc, String signature, String[] exceptions) Class method.
abstract Printer	visitMethodAnnotation(String desc, boolean visible) Method annotation.
abstract void	visitMethodAttribute(Attribute attr) Method attribute.
abstract 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.
Printer	visitMethodTypeAnnotation(int typeRef, TypePath typePath, String desc, boolean visible) Method type annotation.
Printer	visitModule(String name, int access, String version) Module.
void	visitModuleEnd() Module end.
abstract void	visitMultiANewArrayInsn(String desc, int dims) Method instruction.
void	visitOpen(String packaze, int access, String... modules)
abstract void	visitOuterClass(String owner, String name, String desc) Class outer class.
void	visitPackage(String packaze)
void	visitParameter(String name, int access) Method parameter.
abstract Printer	visitParameterAnnotation(int parameter, String desc, boolean visible) Method parameter annotation.
void	visitProvide(String service, String... providers)
void	visitRequire(String module, int access, String version)
abstract void	visitSource(String source, String debug) Class source.
abstract void	visitTableSwitchInsn(int min, int max, Label dflt, Label... labels) Method instruction.
Printer	visitTryCatchAnnotation(int typeRef, TypePath typePath, String desc, boolean visible) Try catch block type annotation.
abstract void	visitTryCatchBlock(Label start, Label end, Label handler, String type) Method exception handler.
abstract void	visitTypeInsn(int opcode, String type) Method instruction.
void	visitUse(String service)
abstract void	visitVarInsn(int opcode, int var) Method instruction.

Methods inherited from class java.lang.Object

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

Field Detail

OPCODES

public static final String[] OPCODES

The names of the Java Virtual Machine opcodes.

TYPES

public static final String[] TYPES

The names of the for operand parameter values of the org.objectweb.asm.MethodVisitor#visitIntInsn method when opcode is NEWARRAY.

HANDLE_TAG

public static final String[] HANDLE_TAG

The names of the tag field values for org.objectweb.asm.Handle.

api

protected final int api

The ASM API version implemented by this class. The value of this field must be one of Opcodes.ASM4, Opcodes.ASM5 or Opcodes.ASM6.

buf

protected final StringBuffer buf

A buffer that can be used to create strings.

text

public final List<Object> text

The text to be printed. Since the code of methods is not necessarily visited in sequential order, one method after the other, but can be interlaced (some instructions from method one, then some instructions from method two, then some instructions from method one again...), it is not possible to print the visited instructions directly to a sequential stream. A class is therefore printed in a two steps process: a string tree is constructed during the visit, and printed to a sequential stream at the end of the visit. This string tree is stored in this field, as a string list that can contain other string lists, which can themselves contain other string lists, and so on.

Constructor Detail

Printer

protected Printer(int api)

Constructs a new Printer.

Parameters:

api - the ASM API version implemented by this printer. Must be one of Opcodes.ASM4, Opcodes.ASM5 or Opcodes.ASM6.

Method Detail

visit

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

Class header. See org.objectweb.asm.ClassVisitor#visit.

Parameters:

version - the class version.

access - the class's access flags (see Opcodes). This parameter also indicates if the class is deprecated.

name - the internal name of the class (see getInternalName).

signature - the signature of this class. May be null if the class is not a generic one, and does not extend or implement generic classes or interfaces.

superName - the internal of name of the super class (see getInternalName). For interfaces, the super class is Object. May be null, but only for the Object class.

interfaces - the internal names of the class's interfaces (see getInternalName). May be null.

visitSource

public abstract void visitSource(String source,
                                 String debug)

Class source. See org.objectweb.asm.ClassVisitor#visitSource.

Parameters:

source - the name of the source file from which the class was compiled. May be null.

debug - additional debug information to compute the correspondance between source and compiled elements of the class. May be null.

visitModule

public Printer visitModule(String name,
                           int access,
                           String version)

Module. See org.objectweb.asm.ClassVisitor#visitModule(String, int).

Parameters:

name - module name.

access - module flags, among ACC_OPEN, ACC_SYNTHETIC and ACC_MANDATED.

version - module version or null.

Returns:

visitOuterClass

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

Class outer class. See org.objectweb.asm.ClassVisitor#visitOuterClass. Visits the enclosing class of the class. This method must be called only if the class has an enclosing class.

Parameters:

owner - internal name of the enclosing class of the class.

name - the name of the method that contains the class, or null if the class is not enclosed in a method of its enclosing class.

desc - the descriptor of the method that contains the class, or null if the class is not enclosed in a method of its enclosing class.

visitClassAnnotation

public abstract Printer visitClassAnnotation(String desc,
                                             boolean visible)

Class annotation. See org.objectweb.asm.ClassVisitor#visitAnnotation.

Parameters:

desc - the class descriptor of the annotation class.

visible - true if the annotation is visible at runtime.

Returns:

the printer

visitClassTypeAnnotation

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

Class type annotation. See org.objectweb.asm.ClassVisitor#visitTypeAnnotation.

Parameters:

typeRef - a reference to the annotated type. The sort of this type reference must be CLASS_TYPE_PARAMETER, CLASS_TYPE_PARAMETER_BOUND or CLASS_EXTENDS. See org.objectweb.asm.TypeReference.

typePath - the path to the annotated type argument, wildcard bound, array element type, or static inner type within 'typeRef'. May be null if the annotation targets 'typeRef' as a whole.

desc - the class descriptor of the annotation class.

visible - true if the annotation is visible at runtime.

Returns:

the printer

visitClassAttribute

public abstract void visitClassAttribute(Attribute attr)

Class attribute. See org.objectweb.asm.ClassVisitor#visitAttribute.

Parameters:

attr - an attribute.

visitInnerClass

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

Class inner name. See org.objectweb.asm.ClassVisitor#visitInnerClass.

Parameters:

name - the internal name of an inner class (see getInternalName).

outerName - the internal name of the class to which the inner class belongs (see getInternalName). May be null for not member classes.

innerName - the (simple) name of the inner class inside its enclosing class. May be null for anonymous inner classes.

access - the access flags of the inner class as originally declared in the enclosing class.

visitField

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

Class field. See org.objectweb.asm.ClassVisitor#visitField.

Parameters:

access - the field's access flags (see Opcodes). This parameter also indicates if the field is synthetic and/or deprecated.

name - the field's name.

desc - the field's descriptor (see Type).

signature - the field's signature. May be null if the field's type does not use generic types.

value - the field's initial value. This parameter, which may be null if the field does not have an initial value, must be an Integer, a Float, a Long, a Double or a String (for int, float, long or String fields respectively). This parameter is only used for static fields. Its value is ignored for non static fields, which must be initialized through bytecode instructions in constructors or methods.

Returns:

the printer

visitMethod

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

Class method. See org.objectweb.asm.ClassVisitor#visitMethod.

Parameters:

access - the method's access flags (see Opcodes). This parameter also indicates if the method is synthetic and/or deprecated.

name - the method's name.

desc - the method's descriptor (see Type).

signature - the method's signature. May be null if the method parameters, return type and exceptions do not use generic types.

exceptions - the internal names of the method's exception classes (see getInternalName). May be null.

Returns:

the printer

visitClassEnd

public abstract void visitClassEnd()

Class end. See org.objectweb.asm.ClassVisitor#visitEnd.

visitMainClass

public void visitMainClass(String mainClass)

visitPackage

public void visitPackage(String packaze)

visitRequire

public void visitRequire(String module,
                         int access,
                         String version)

visitExport

public void visitExport(String packaze,
                        int access,
                        String... modules)

visitOpen

public void visitOpen(String packaze,
                      int access,
                      String... modules)

visitUse

public void visitUse(String service)

visitProvide

public void visitProvide(String service,
                         String... providers)

visitModuleEnd

public void visitModuleEnd()

Module end. See org.objectweb.asm.ModuleVisitor#visitEnd.

visit

public abstract void visit(String name,
                           Object value)

Annotation value. See org.objectweb.asm.AnnotationVisitor#visit.

Parameters:

name - the value name.

value - the actual value, whose type must be Byte, Boolean, Character, Short, Integer , Long, Float, Double, String or org.objectweb.asm.Type or OBJECT or ARRAY sort. This value can also be an array of byte, boolean, short, char, int, long, float or double values (this is equivalent to using visitArray and visiting each array element in turn, but is more convenient).

visitEnum

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

Annotation enum value. See org.objectweb.asm.AnnotationVisitor#visitEnum. Visits an enumeration value of the annotation.

Parameters:

name - the value name.

desc - the class descriptor of the enumeration class.

value - the actual enumeration value.

visitAnnotation

public abstract Printer visitAnnotation(String name,
                                        String desc)

Nested annotation value. See org.objectweb.asm.AnnotationVisitor#visitAnnotation.

Parameters:

name - the value name.

desc - the class descriptor of the nested annotation class.

Returns:

the printer

visitArray

public abstract Printer visitArray(String name)

Annotation array value. See org.objectweb.asm.AnnotationVisitor#visitArray. Visits an array value of the annotation. Note that arrays of primitive types (such as byte, boolean, short, char, int, long, float or double) can be passed as value to visit. This is what org.objectweb.asm.ClassReader does.

Parameters:

name - the value name.

Returns:

the printer

visitAnnotationEnd

public abstract void visitAnnotationEnd()

Annotation end. See org.objectweb.asm.AnnotationVisitor#visitEnd.

visitFieldAnnotation

public abstract Printer visitFieldAnnotation(String desc,
                                             boolean visible)

Field annotation. See org.objectweb.asm.FieldVisitor#visitAnnotation.

Parameters:

desc - the class descriptor of the annotation class.

visible - true if the annotation is visible at runtime.

Returns:

the printer

visitFieldTypeAnnotation

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

Field type annotation. See org.objectweb.asm.FieldVisitor#visitTypeAnnotation.

Parameters:

typeRef - a reference to the annotated type. The sort of this type reference must be FIELD. See org.objectweb.asm.TypeReference.

typePath - the path to the annotated type argument, wildcard bound, array element type, or static inner type within 'typeRef'. May be null if the annotation targets 'typeRef' as a whole.

desc - the class descriptor of the annotation class.

visible - true if the annotation is visible at runtime.

Returns:

the printer

visitFieldAttribute

public abstract void visitFieldAttribute(Attribute attr)

Field attribute. See org.objectweb.asm.FieldVisitor#visitAttribute.

Parameters:

attr - an attribute.

visitFieldEnd

public abstract void visitFieldEnd()

Field end. See org.objectweb.asm.FieldVisitor#visitEnd.

visitParameter

public void visitParameter(String name,
                           int access)

Method parameter. See org.objectweb.asm.MethodVisitor#visitParameter(String, int).

Parameters:

name - parameter name or null if none is provided.

access - the parameter's access flags, only ACC_FINAL, ACC_SYNTHETIC or/and ACC_MANDATED are allowed (see Opcodes).

visitAnnotationDefault

public abstract Printer visitAnnotationDefault()

Method default annotation. See org.objectweb.asm.MethodVisitor#visitAnnotationDefault.

Returns:

the printer

visitMethodAnnotation

public abstract Printer visitMethodAnnotation(String desc,
                                              boolean visible)

Method annotation. See org.objectweb.asm.MethodVisitor#visitAnnotation.

Parameters:

desc - the class descriptor of the annotation class.

visible - true if the annotation is visible at runtime.

Returns:

the printer

visitMethodTypeAnnotation

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

Method type annotation. See org.objectweb.asm.MethodVisitor#visitTypeAnnotation.

Parameters:

typeRef - a reference to the annotated type. The sort of this type reference must be FIELD. See org.objectweb.asm.TypeReference.

typePath - the path to the annotated type argument, wildcard bound, array element type, or static inner type within 'typeRef'. May be null if the annotation targets 'typeRef' as a whole.

desc - the class descriptor of the annotation class.

visible - true if the annotation is visible at runtime.

Returns:

the printer

visitParameterAnnotation

public abstract Printer visitParameterAnnotation(int parameter,
                                                 String desc,
                                                 boolean visible)

Method parameter annotation. See org.objectweb.asm.MethodVisitor#visitParameterAnnotation.

Parameters:

parameter - the parameter index.

desc - the class descriptor of the annotation class.

visible - true if the annotation is visible at runtime.

Returns:

the printer

visitMethodAttribute

public abstract void visitMethodAttribute(Attribute attr)

Method attribute. See org.objectweb.asm.MethodVisitor#visitAttribute.

Parameters:

attr - an attribute.

visitCode

public abstract void visitCode()

Method start. See org.objectweb.asm.MethodVisitor#visitCode.

visitFrame

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

Method stack frame. See org.objectweb.asm.MethodVisitor#visitFrame. Visits the current state of the local variables and operand stack elements. This method must(*) be called just before any instruction i that follows an unconditional branch instruction such as GOTO or THROW, that is the target of a jump instruction, or that starts an exception handler block. The visited types must describe the values of the local variables and of the operand stack elements just before i is executed.

(*) this is mandatory only for classes whose version is greater than or equal to V1_6.

The frames of a method must be given either in expanded form, or in compressed form (all frames must use the same format, i.e. you must not mix expanded and compressed frames within a single method):

• In expanded form, all frames must have the F_NEW type.
• In compressed form, frames are basically "deltas" from the state of the previous frame:
  • Opcodes.F_SAME representing frame with exactly the same locals as the previous frame and with the empty stack.
  • Opcodes.F_SAME1 representing frame with exactly the same locals as the previous frame and with single value on the stack ( nStack is 1 and stack[0] contains value for the type of the stack item).
  • Opcodes.F_APPEND representing frame with current locals are the same as the locals in the previous frame, except that additional locals are defined (nLocal is 1, 2 or 3 and local elements contains values representing added types).
  • Opcodes.F_CHOP representing frame with current locals are the same as the locals in the previous frame, except that the last 1-3 locals are absent and with the empty stack (nLocals is 1, 2 or 3).
  • Opcodes.F_FULL representing complete frame data.

In both cases the first frame, corresponding to the method's parameters and access flags, is implicit and must not be visited. Also, it is illegal to visit two or more frames for the same code location (i.e., at least one instruction must be visited between two calls to visitFrame).

Parameters:

type - the type of this stack map frame. Must be Opcodes.F_NEW for expanded frames, or Opcodes.F_FULL, Opcodes.F_APPEND, Opcodes.F_CHOP, Opcodes.F_SAME or Opcodes.F_APPEND, Opcodes.F_SAME1 for compressed frames.

nLocal - the number of local variables in the visited frame.

local - the local variable types in this frame. This array must not be modified. Primitive types are represented by Opcodes.TOP, Opcodes.INTEGER, Opcodes.FLOAT, Opcodes.LONG, Opcodes.DOUBLE,Opcodes.NULL or Opcodes.UNINITIALIZED_THIS (long and double are represented by a single element). Reference types are represented by String objects (representing internal names), and uninitialized types by Label objects (this label designates the NEW instruction that created this uninitialized value).

nStack - the number of operand stack elements in the visited frame.

stack - the operand stack types in this frame. This array must not be modified. Its content has the same format as the "local" array.

Throws:

IllegalStateException - if a frame is visited just after another one, without any instruction between the two (unless this frame is a Opcodes#F_SAME frame, in which case it is silently ignored).

visitInsn

public abstract void visitInsn(int opcode)

Method instruction. See org.objectweb.asm.MethodVisitor#visitInsn

Parameters:

opcode - the opcode of the instruction to be visited. This opcode is either NOP, ACONST_NULL, ICONST_M1, ICONST_0, ICONST_1, ICONST_2, ICONST_3, ICONST_4, ICONST_5, LCONST_0, LCONST_1, FCONST_0, FCONST_1, FCONST_2, DCONST_0, DCONST_1, IALOAD, LALOAD, FALOAD, DALOAD, AALOAD, BALOAD, CALOAD, SALOAD, IASTORE, LASTORE, FASTORE, DASTORE, AASTORE, BASTORE, CASTORE, SASTORE, POP, POP2, DUP, DUP_X1, DUP_X2, DUP2, DUP2_X1, DUP2_X2, SWAP, IADD, LADD, FADD, DADD, ISUB, LSUB, FSUB, DSUB, IMUL, LMUL, FMUL, DMUL, IDIV, LDIV, FDIV, DDIV, IREM, LREM, FREM, DREM, INEG, LNEG, FNEG, DNEG, ISHL, LSHL, ISHR, LSHR, IUSHR, LUSHR, IAND, LAND, IOR, LOR, IXOR, LXOR, I2L, I2F, I2D, L2I, L2F, L2D, F2I, F2L, F2D, D2I, D2L, D2F, I2B, I2C, I2S, LCMP, FCMPL, FCMPG, DCMPL, DCMPG, IRETURN, LRETURN, FRETURN, DRETURN, ARETURN, RETURN, ARRAYLENGTH, ATHROW, MONITORENTER, or MONITOREXIT.

visitIntInsn

public abstract void visitIntInsn(int opcode,
                                  int operand)

Method instruction. See org.objectweb.asm.MethodVisitor#visitIntInsn.

Parameters:

opcode - the opcode of the instruction to be visited. This opcode is either BIPUSH, SIPUSH or NEWARRAY.

operand - the operand of the instruction to be visited.
When opcode is BIPUSH, operand value should be between Byte.MIN_VALUE and Byte.MAX_VALUE.
When opcode is SIPUSH, operand value should be between Short.MIN_VALUE and Short.MAX_VALUE.
When opcode is NEWARRAY, operand value should be one of Opcodes.T_BOOLEAN, Opcodes.T_CHAR, Opcodes.T_FLOAT, Opcodes.T_DOUBLE, Opcodes.T_BYTE, Opcodes.T_SHORT, Opcodes.T_INT or Opcodes.T_LONG.

visitVarInsn

public abstract void visitVarInsn(int opcode,
                                  int var)

Method instruction. See org.objectweb.asm.MethodVisitor#visitVarInsn.

Parameters:

opcode - the opcode of the local variable instruction to be visited. This opcode is either ILOAD, LLOAD, FLOAD, DLOAD, ALOAD, ISTORE, LSTORE, FSTORE, DSTORE, ASTORE or RET.

var - the operand of the instruction to be visited. This operand is the index of a local variable.

visitTypeInsn

public abstract void visitTypeInsn(int opcode,
                                   String type)

Method instruction. See org.objectweb.asm.MethodVisitor#visitTypeInsn. /** Visits a type instruction. A type instruction is an instruction that takes the internal name of a class as parameter.

Parameters:

opcode - the opcode of the type instruction to be visited. This opcode is either NEW, ANEWARRAY, CHECKCAST or INSTANCEOF.

type - the operand of the instruction to be visited. This operand must be the internal name of an object or array class (see getInternalName).

visitFieldInsn

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

Method instruction. See org.objectweb.asm.MethodVisitor#visitFieldInsn.

Parameters:

opcode - the opcode of the type instruction to be visited. This opcode is either GETSTATIC, PUTSTATIC, GETFIELD or PUTFIELD.

owner - the internal name of the field's owner class (see getInternalName).

name - the field's name.

desc - the field's descriptor (see Type).

visitMethodInsn

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

Deprecated.

Method instruction. See org.objectweb.asm.MethodVisitor#visitMethodInsn.

Parameters:

opcode - the opcode of the type instruction to be visited. This opcode is either INVOKEVIRTUAL, INVOKESPECIAL, INVOKESTATIC or INVOKEINTERFACE.

owner - the internal name of the method's owner class (see getInternalName).

name - the method's name.

desc - the method's descriptor (see Type).

visitMethodInsn

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

Method instruction. See org.objectweb.asm.MethodVisitor#visitMethodInsn.

Parameters:

opcode - the opcode of the type instruction to be visited. This opcode is either INVOKEVIRTUAL, INVOKESPECIAL, INVOKESTATIC or INVOKEINTERFACE.

owner - the internal name of the method's owner class (see getInternalName).

name - the method's name.

desc - the method's descriptor (see Type).

itf - if the method's owner class is an interface.

visitInvokeDynamicInsn

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

Method instruction. See org.objectweb.asm.MethodVisitor#visitInvokeDynamicInsn. Visits an invokedynamic instruction.

Parameters:

name - the method's name.

desc - the method's descriptor (see Type).

bsm - the bootstrap method.

bsmArgs - the bootstrap method constant arguments. Each argument must be an Integer, Float, Long, Double, String, org.objectweb.asm.Type or Handle value. This method is allowed to modify the content of the array so a caller should expect that this array may change.

visitJumpInsn

public abstract void visitJumpInsn(int opcode,
                                   Label label)

Method jump instruction. See org.objectweb.asm.MethodVisitor#visitJumpInsn.

Parameters:

opcode - the opcode of the type instruction to be visited. This opcode is either IFEQ, IFNE, IFLT, IFGE, IFGT, IFLE, IF_ICMPEQ, IF_ICMPNE, IF_ICMPLT, IF_ICMPGE, IF_ICMPGT, IF_ICMPLE, IF_ACMPEQ, IF_ACMPNE, GOTO, JSR, IFNULL or IFNONNULL.

label - the operand of the instruction to be visited. This operand is a label that designates the instruction to which the jump instruction may jump.

visitLabel

public abstract void visitLabel(Label label)

Method label. See org.objectweb.asm.MethodVisitor#visitLabel.

Parameters:

label - a Label object.

visitLdcInsn

public abstract void visitLdcInsn(Object cst)

Method instruction. See org.objectweb.asm.MethodVisitor#visitLdcInsn. Visits a LDC instruction. Note that new constant types may be added in future versions of the Java Virtual Machine. To easily detect new constant types, implementations of this method should check for unexpected constant types, like this:

 if (cst instanceof Integer) {
     // ...
 } else if (cst instanceof Float) {
     // ...
 } else if (cst instanceof Long) {
     // ...
 } else if (cst instanceof Double) {
     // ...
 } else if (cst instanceof String) {
     // ...
 } else if (cst instanceof Type) {
     int sort = ((Type) cst).getSort();
     if (sort == Type.OBJECT) {
         // ...
     } else if (sort == Type.ARRAY) {
         // ...
     } else if (sort == Type.METHOD) {
         // ...
     } else {
         // throw an exception
     }
 } else if (cst instanceof Handle) {
     // ...
 } else {
     // throw an exception
 }
 

Parameters:

cst - the constant to be loaded on the stack. This parameter must be a non null Integer, a Float, a Long, a Double, a String, a org.objectweb.asm.Type of OBJECT or ARRAY sort for .class constants, for classes whose version is 49.0, a org.objectweb.asm.Type of METHOD sort or a Handle for MethodType and MethodHandle constants, for classes whose version is 51.0.

visitIincInsn

public abstract void visitIincInsn(int var,
                                   int increment)

Method instruction. See org.objectweb.asm.MethodVisitor#visitIincInsn.

Parameters:

var - index of the local variable to be incremented.

increment - amount to increment the local variable by.

visitTableSwitchInsn

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

Method instruction. See org.objectweb.asm.MethodVisitor#visitTableSwitchInsn.

Parameters:

min - the minimum key value.

max - the maximum key value.

dflt - beginning of the default handler block.

labels - beginnings of the handler blocks. labels[i] is the beginning of the handler block for the min + i key.

visitLookupSwitchInsn

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

Method instruction. See org.objectweb.asm.MethodVisitor#visitLookupSwitchInsn.

Parameters:

dflt - beginning of the default handler block.

keys - the values of the keys.

labels - beginnings of the handler blocks. labels[i] is the beginning of the handler block for the keys[i] key.

visitMultiANewArrayInsn

public abstract void visitMultiANewArrayInsn(String desc,
                                             int dims)

Method instruction. See org.objectweb.asm.MethodVisitor#visitMultiANewArrayInsn.

Parameters:

desc - an array type descriptor (see Type).

dims - number of dimensions of the array to allocate.

visitInsnAnnotation

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

Instruction type annotation. See org.objectweb.asm.MethodVisitor#visitInsnAnnotation.

Parameters:

typeRef - a reference to the annotated type. The sort of this type reference must be INSTANCEOF, NEW, CONSTRUCTOR_REFERENCE, METHOD_REFERENCE, CAST, CONSTRUCTOR_INVOCATION_TYPE_ARGUMENT, METHOD_INVOCATION_TYPE_ARGUMENT, CONSTRUCTOR_REFERENCE_TYPE_ARGUMENT, or METHOD_REFERENCE_TYPE_ARGUMENT. See org.objectweb.asm.TypeReference.

typePath - the path to the annotated type argument, wildcard bound, array element type, or static inner type within 'typeRef'. May be null if the annotation targets 'typeRef' as a whole.

desc - the class descriptor of the annotation class.

visible - true if the annotation is visible at runtime.

Returns:

the printer

visitTryCatchBlock

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

Method exception handler. See org.objectweb.asm.MethodVisitor#visitTryCatchBlock.

Parameters:

start - beginning of the exception handler's scope (inclusive).

end - end of the exception handler's scope (exclusive).

handler - beginning of the exception handler's code.

type - internal name of the type of exceptions handled by the handler, or null to catch any exceptions (for "finally" blocks).

Throws:

IllegalArgumentException - if one of the labels has already been visited by this visitor (by the visitLabel method).

visitTryCatchAnnotation

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

Try catch block type annotation. See org.objectweb.asm.MethodVisitor#visitTryCatchAnnotation.

Parameters:

typeRef - a reference to the annotated type. The sort of this type reference must be EXCEPTION_PARAMETER. See org.objectweb.asm.TypeReference.

typePath - the path to the annotated type argument, wildcard bound, array element type, or static inner type within 'typeRef'. May be null if the annotation targets 'typeRef' as a whole.

desc - the class descriptor of the annotation class.

visible - true if the annotation is visible at runtime.

Returns:

the printer

visitLocalVariable

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

Method debug info. See org.objectweb.asm.MethodVisitor#visitLocalVariable.

Parameters:

name - the name of a local variable.

desc - the type descriptor of this local variable.

signature - the type signature of this local variable. May be null if the local variable type does not use generic types.

start - the first instruction corresponding to the scope of this local variable (inclusive).

end - the last instruction corresponding to the scope of this local variable (exclusive).

index - the local variable's index.

Throws:

IllegalArgumentException - if one of the labels has not already been visited by this visitor (by the visitLabel method).

visitLocalVariableAnnotation

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

Local variable type annotation. See org.objectweb.asm.MethodVisitor#visitTryCatchAnnotation.

Parameters:

typeRef - a reference to the annotated type. The sort of this type reference must be LOCAL_VARIABLE or RESOURCE_VARIABLE. See org.objectweb.asm.TypeReference.

typePath - the path to the annotated type argument, wildcard bound, array element type, or static inner type within 'typeRef'. May be null if the annotation targets 'typeRef' as a whole.

start - the fist instructions corresponding to the continuous ranges that make the scope of this local variable (inclusive).

end - the last instructions corresponding to the continuous ranges that make the scope of this local variable (exclusive). This array must have the same size as the 'start' array.

index - the local variable's index in each range. This array must have the same size as the 'start' array.

desc - the class descriptor of the annotation class.

visible - true if the annotation is visible at runtime.

Returns:

the printer

visitLineNumber

public abstract void visitLineNumber(int line,
                                     Label start)

Method debug info. See org.objectweb.asm.MethodVisitor#visitLineNumber.

Parameters:

line - a line number. This number refers to the source file from which the class was compiled.

start - the first instruction corresponding to this line number.

Throws:

IllegalArgumentException - if start has not already been visited by this visitor (by the visitLabel method).

visitMaxs

public abstract void visitMaxs(int maxStack,
                               int maxLocals)

Method max stack and max locals. See org.objectweb.asm.MethodVisitor#visitMaxs.

Parameters:

maxStack - maximum stack size of the method.

maxLocals - maximum number of local variables for the method.

visitMethodEnd

public abstract void visitMethodEnd()

Method end. See org.objectweb.asm.MethodVisitor#visitEnd.

getText

public List<Object> getText()

Returns the text constructed by this visitor.

Returns:

the text constructed by this visitor.

print

public void print(PrintWriter pw)

Prints the text constructed by this visitor.

Parameters:

pw - the print writer to be used.

appendString

public static void appendString(StringBuffer buf,
                                String s)

Appends a quoted string to a given buffer.

Parameters:

buf - the buffer where the string must be added.

s - the string to be added.