com.googlecode.aviator.asm.util

类 ASMifierMethodVisitor

java.lang.Object

com.googlecode.aviator.asm.util.AbstractVisitor

com.googlecode.aviator.asm.util.ASMifierAbstractVisitor

com.googlecode.aviator.asm.util.ASMifierMethodVisitor

所有已实现的接口:

MethodVisitor

public class ASMifierMethodVisitor
extends ASMifierAbstractVisitor
implements MethodVisitor

A MethodVisitor that prints the ASM code that generates the methods it visits.

作者:

Eric Bruneton, Eugene Kuleshov

字段概要

从类继承的字段 com.googlecode.aviator.asm.util.ASMifierAbstractVisitor

name

从类继承的字段 com.googlecode.aviator.asm.util.AbstractVisitor

buf, OPCODES, text, TYPES

构造器概要

构造器

构造器和说明
ASMifierMethodVisitor() Constructs a new ASMifierMethodVisitor object.

方法概要

方法

限定符和类型	方法和说明
AnnotationVisitor	visitAnnotationDefault() Visits the default value of this annotation interface method.
void	visitCode() Starts the visit of the method's code, if any (i.e. non abstract method).
void	visitFieldInsn(int opcode, String owner, String name, String desc) Visits a field instruction.
void	visitFrame(int type, int nLocal, Object[] local, int nStack, Object[] stack) Visits the current state of the local variables and operand stack elements.
void	visitIincInsn(int var, int increment) Visits an IINC instruction.
void	visitInsn(int opcode) Visits a zero operand instruction.
void	visitIntInsn(int opcode, int operand) Visits an instruction with a single int operand.
void	visitJumpInsn(int opcode, Label label) Visits a jump instruction.
void	visitLabel(Label label) Visits a label.
void	visitLdcInsn(Object cst) Visits a LDC instruction.
void	visitLineNumber(int line, Label start) Visits a line number declaration.
void	visitLocalVariable(String name, String desc, String signature, Label start, Label end, int index) Visits a local variable declaration.
void	visitLookupSwitchInsn(Label dflt, int[] keys, Label[] labels) Visits a LOOKUPSWITCH instruction.
void	visitMaxs(int maxStack, int maxLocals) Visits the maximum stack size and the maximum number of local variables of the method.
void	visitMethodInsn(int opcode, String owner, String name, String desc) Visits a method instruction.
void	visitMultiANewArrayInsn(String desc, int dims) Visits a MULTIANEWARRAY instruction.
AnnotationVisitor	visitParameterAnnotation(int parameter, String desc, boolean visible) Visits an annotation of a parameter this method.
void	visitTableSwitchInsn(int min, int max, Label dflt, Label[] labels) Visits a TABLESWITCH instruction.
void	visitTryCatchBlock(Label start, Label end, Label handler, String type) Visits a try catch block.
void	visitTypeInsn(int opcode, String desc) Visits a type instruction.
void	visitVarInsn(int opcode, int var) Visits a local variable instruction.

从类继承的方法 com.googlecode.aviator.asm.util.ASMifierAbstractVisitor

visitAnnotation, visitAttribute, visitEnd

从类继承的方法 com.googlecode.aviator.asm.util.AbstractVisitor

appendString, getDefaultAttributes, getText, print

从类继承的方法 java.lang.Object

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

从接口继承的方法 com.googlecode.aviator.asm.MethodVisitor

visitAnnotation, visitAttribute, visitEnd

构造器详细资料

ASMifierMethodVisitor

public ASMifierMethodVisitor()

Constructs a new ASMifierMethodVisitor object.

方法详细资料

visitAnnotationDefault

public AnnotationVisitor visitAnnotationDefault()

从接口复制的说明: MethodVisitor

Visits the default value of this annotation interface method.

指定者:

visitAnnotationDefault 在接口中 MethodVisitor

返回:

a visitor to the visit the actual default value of this annotation interface method, or null if this visitor is not interested in visiting this default value. The 'name' parameters passed to the methods of this annotation visitor are ignored. Moreover, exacly one visit method must be called on this annotation visitor, followed by visitEnd.

visitParameterAnnotation

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

从接口复制的说明: MethodVisitor

Visits an annotation of a parameter this method.

指定者:

visitParameterAnnotation 在接口中 MethodVisitor

参数:

parameter - the parameter index.

desc - the class descriptor of the annotation class.

visible - true if the annotation is visible at runtime.

返回:

a visitor to visit the annotation values, or null if this visitor is not interested in visiting this annotation.

visitCode

public void visitCode()

从接口复制的说明: MethodVisitor

Starts the visit of the method's code, if any (i.e. non abstract method).

指定者:

visitCode 在接口中 MethodVisitor

visitFrame

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

从接口复制的说明: MethodVisitor

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 unconditionnal 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.

Packed frames are basically "deltas" from the state of the previous frame (very first frame is implicitly defined by the method's parameters and access flags):

• 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.

指定者:

visitFrame 在接口中 MethodVisitor

参数:

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, or type descriptors for array types), 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.

visitInsn

public void visitInsn(int opcode)

从接口复制的说明: MethodVisitor

Visits a zero operand instruction.

指定者:

visitInsn 在接口中 MethodVisitor

参数:

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 void visitIntInsn(int opcode,
                int operand)

从接口复制的说明: MethodVisitor

Visits an instruction with a single int operand.

指定者:

visitIntInsn 在接口中 MethodVisitor

参数:

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 void visitVarInsn(int opcode,
                int var)

从接口复制的说明: MethodVisitor

Visits a local variable instruction. A local variable instruction is an instruction that loads or stores the value of a local variable.

指定者:

visitVarInsn 在接口中 MethodVisitor

参数:

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 void visitTypeInsn(int opcode,
                 String desc)

从接口复制的说明: MethodVisitor

Visits a type instruction. A type instruction is an instruction that takes a type descriptor as parameter.

指定者:

visitTypeInsn 在接口中 MethodVisitor

参数:

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

desc - the operand of the instruction to be visited. This operand is must be a fully qualified class name in internal form, or the type descriptor of an array type (see Type).

visitFieldInsn

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

从接口复制的说明: MethodVisitor

Visits a field instruction. A field instruction is an instruction that loads or stores the value of a field of an object.

指定者:

visitFieldInsn 在接口中 MethodVisitor

参数:

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

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

从接口复制的说明: MethodVisitor

Visits a method instruction. A method instruction is an instruction that invokes a method.

指定者:

visitMethodInsn 在接口中 MethodVisitor

参数:

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).

visitJumpInsn

public void visitJumpInsn(int opcode,
                 Label label)

从接口复制的说明: MethodVisitor

Visits a jump instruction. A jump instruction is an instruction that may jump to another instruction.

指定者:

visitJumpInsn 在接口中 MethodVisitor

参数:

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 void visitLabel(Label label)

从接口复制的说明: MethodVisitor

Visits a label. A label designates the instruction that will be visited just after it.

指定者:

visitLabel 在接口中 MethodVisitor

参数:

label - a Label object.

visitLdcInsn

public void visitLdcInsn(Object cst)

从接口复制的说明: MethodVisitor

Visits a LDC instruction.

指定者:

visitLdcInsn 在接口中 MethodVisitor

参数:

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 (or a Type for .class constants, for classes whose version is 49.0 or more).

visitIincInsn

public void visitIincInsn(int var,
                 int increment)

从接口复制的说明: MethodVisitor

Visits an IINC instruction.

指定者:

visitIincInsn 在接口中 MethodVisitor

参数:

var - index of the local variable to be incremented.

increment - amount to increment the local variable by.

visitTableSwitchInsn

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

从接口复制的说明: MethodVisitor

Visits a TABLESWITCH instruction.

指定者:

visitTableSwitchInsn 在接口中 MethodVisitor

参数:

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

从接口复制的说明: MethodVisitor

Visits a LOOKUPSWITCH instruction.

指定者:

visitLookupSwitchInsn 在接口中 MethodVisitor

参数:

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 void visitMultiANewArrayInsn(String desc,
                           int dims)

从接口复制的说明: MethodVisitor

Visits a MULTIANEWARRAY instruction.

指定者:

visitMultiANewArrayInsn 在接口中 MethodVisitor

参数:

desc - an array type descriptor (see Type).

dims - number of dimensions of the array to allocate.

visitTryCatchBlock

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

从接口复制的说明: MethodVisitor

Visits a try catch block.

指定者:

visitTryCatchBlock 在接口中 MethodVisitor

参数:

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).

visitLocalVariable

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

从接口复制的说明: MethodVisitor

Visits a local variable declaration.

指定者:

visitLocalVariable 在接口中 MethodVisitor

参数:

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.

visitLineNumber

public void visitLineNumber(int line,
                   Label start)

从接口复制的说明: MethodVisitor

Visits a line number declaration.

指定者:

visitLineNumber 在接口中 MethodVisitor

参数:

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.

visitMaxs

public void visitMaxs(int maxStack,
             int maxLocals)

从接口复制的说明: MethodVisitor

Visits the maximum stack size and the maximum number of local variables of the method.

指定者:

visitMaxs 在接口中 MethodVisitor

参数:

maxStack - maximum stack size of the method.

maxLocals - maximum number of local variables for the method.