com.xinmeng.plugin.utils

? MethodLogVisitor

java.lang.Object

org.objectweb.asm.MethodVisitor

com.xinmeng.plugin.utils.MethodLogVisitor

public class MethodLogVisitor
extends org.objectweb.asm.MethodVisitor

????

??????? org.objectweb.asm.MethodVisitor

api, mv

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???

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MethodLogVisitor(org.objectweb.asm.MethodVisitor mv)

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??????	?????
static java.lang.String	className2Path(java.lang.String classname) turn "com.bryansharp.util" to "com/bryansharp/util"
void	visitAttribute(org.objectweb.asm.Attribute attribute) Visits a non standard attribute of this method.
void	visitCode() Starts the visit of the method's code, if any (i.e. non abstract method).
void	visitEnd() Visits the end of the method.
void	visitFieldInsn(int opcode, java.lang.String owner, java.lang.String name, java.lang.String desc) Visits a field instruction.
void	visitFrame(int type, int nLocal, java.lang.Object[] local, int nStack, java.lang.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 i, int i1) Visits an instruction with a single int operand.
void	visitJumpInsn(int opcode, org.objectweb.asm.Label label) Visits a jump instruction.
void	visitLabel(org.objectweb.asm.Label label) Visits a label.
void	visitLdcInsn(java.lang.Object o) Visits a LDC instruction.
void	visitLineNumber(int line, org.objectweb.asm.Label label) Visits a line number declaration.
void	visitLocalVariable(java.lang.String s, java.lang.String s1, java.lang.String s2, org.objectweb.asm.Label label, org.objectweb.asm.Label label1, int i) Visits a local variable declaration.
void	visitLookupSwitchInsn(org.objectweb.asm.Label label, int[] ints, org.objectweb.asm.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, java.lang.String owner, java.lang.String name, java.lang.String desc, boolean itf) Visits a method instruction.
void	visitMultiANewArrayInsn(java.lang.String s, int i) Visits a MULTIANEWARRAY instruction.
void	visitTableSwitchInsn(int i, int i1, org.objectweb.asm.Label label, org.objectweb.asm.Label[] labels) Visits a TABLESWITCH instruction.
void	visitTryCatchBlock(org.objectweb.asm.Label label, org.objectweb.asm.Label label1, org.objectweb.asm.Label label2, java.lang.String s) Visits a try catch block.
void	visitTypeInsn(int opcode, java.lang.String s) Visits a type instruction.
void	visitVarInsn(int opcode, int var) Visits a local variable instruction.

??????? org.objectweb.asm.MethodVisitor

visitAnnotation, visitAnnotationDefault, visitInsnAnnotation, visitInvokeDynamicInsn, visitLocalVariableAnnotation, visitMethodInsn, visitParameter, visitParameterAnnotation, visitTryCatchAnnotation, visitTypeAnnotation

??????? java.lang.Object

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

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MethodLogVisitor

public MethodLogVisitor(org.objectweb.asm.MethodVisitor mv)

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className2Path

public static java.lang.String className2Path(java.lang.String classname)

turn "com.bryansharp.util" to "com/bryansharp/util"

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classname - full class name

??:

class path

visitMethodInsn

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

???????: org.objectweb.asm.MethodVisitor

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

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visitMethodInsn ??? org.objectweb.asm.MethodVisitor

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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.

visitAttribute

public void visitAttribute(org.objectweb.asm.Attribute attribute)

???????: org.objectweb.asm.MethodVisitor

Visits a non standard attribute of this method.

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visitAttribute ??? org.objectweb.asm.MethodVisitor

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attribute - an attribute.

visitEnd

public void visitEnd()

???????: org.objectweb.asm.MethodVisitor

Visits the end of the method. This method, which is the last one to be called, is used to inform the visitor that all the annotations and attributes of the method have been visited.

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visitEnd ??? org.objectweb.asm.MethodVisitor

visitFieldInsn

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

???????: org.objectweb.asm.MethodVisitor

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

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visitFieldInsn ??? org.objectweb.asm.MethodVisitor

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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).

visitFrame

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

???????: org.objectweb.asm.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 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).

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visitFrame ??? org.objectweb.asm.MethodVisitor

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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.

visitLabel

public void visitLabel(org.objectweb.asm.Label label)

???????: org.objectweb.asm.MethodVisitor

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

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visitLabel ??? org.objectweb.asm.MethodVisitor

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label - a Label object.

visitLineNumber

public void visitLineNumber(int line,
                            org.objectweb.asm.Label label)

???????: org.objectweb.asm.MethodVisitor

Visits a line number declaration.

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visitLineNumber ??? org.objectweb.asm.MethodVisitor

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

label - the first instruction corresponding to this line number.

visitIincInsn

public void visitIincInsn(int var,
                          int increment)

???????: org.objectweb.asm.MethodVisitor

Visits an IINC instruction.

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visitIincInsn ??? org.objectweb.asm.MethodVisitor

??:

var - index of the local variable to be incremented.

increment - amount to increment the local variable by.

visitIntInsn

public void visitIntInsn(int i,
                         int i1)

???????: org.objectweb.asm.MethodVisitor

Visits an instruction with a single int operand.

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visitIntInsn ??? org.objectweb.asm.MethodVisitor

??:

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

i1 - 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.

visitMaxs

public void visitMaxs(int maxStack,
                      int maxLocals)

???????: org.objectweb.asm.MethodVisitor

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

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visitMaxs ??? org.objectweb.asm.MethodVisitor

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maxStack - maximum stack size of the method.

maxLocals - maximum number of local variables for the method.

visitVarInsn

public void visitVarInsn(int opcode,
                         int var)

???????: org.objectweb.asm.MethodVisitor

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

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visitVarInsn ??? org.objectweb.asm.MethodVisitor

??:

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.

visitJumpInsn

public void visitJumpInsn(int opcode,
                          org.objectweb.asm.Label label)

???????: org.objectweb.asm.MethodVisitor

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

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visitJumpInsn ??? org.objectweb.asm.MethodVisitor

??:

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.

visitLdcInsn

public void visitLdcInsn(java.lang.Object o)

???????: org.objectweb.asm.MethodVisitor

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
 }
 

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visitLdcInsn ??? org.objectweb.asm.MethodVisitor

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o - 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 Type of OBJECT or ARRAY sort for .class constants, for classes whose version is 49.0, a Type of METHOD sort or a Handle for MethodType and MethodHandle constants, for classes whose version is 51.0.

visitLookupSwitchInsn

public void visitLookupSwitchInsn(org.objectweb.asm.Label label,
                                  int[] ints,
                                  org.objectweb.asm.Label[] labels)

???????: org.objectweb.asm.MethodVisitor

Visits a LOOKUPSWITCH instruction.

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visitLookupSwitchInsn ??? org.objectweb.asm.MethodVisitor

??:

label - beginning of the default handler block.

ints - 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(java.lang.String s,
                                    int i)

???????: org.objectweb.asm.MethodVisitor

Visits a MULTIANEWARRAY instruction.

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visitMultiANewArrayInsn ??? org.objectweb.asm.MethodVisitor

??:

s - an array type descriptor (see Type).

i - number of dimensions of the array to allocate.

visitTableSwitchInsn

public void visitTableSwitchInsn(int i,
                                 int i1,
                                 org.objectweb.asm.Label label,
                                 org.objectweb.asm.Label[] labels)

???????: org.objectweb.asm.MethodVisitor

Visits a TABLESWITCH instruction.

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visitTableSwitchInsn ??? org.objectweb.asm.MethodVisitor

??:

i - the minimum key value.

i1 - the maximum key value.

label - 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.

visitTryCatchBlock

public void visitTryCatchBlock(org.objectweb.asm.Label label,
                               org.objectweb.asm.Label label1,
                               org.objectweb.asm.Label label2,
                               java.lang.String s)

???????: org.objectweb.asm.MethodVisitor

Visits a try catch block.

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visitTryCatchBlock ??? org.objectweb.asm.MethodVisitor

??:

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

label1 - end of the exception handler's scope (exclusive).

label2 - beginning of the exception handler's code.

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

visitTypeInsn

public void visitTypeInsn(int opcode,
                          java.lang.String s)

???????: org.objectweb.asm.MethodVisitor

Visits a type instruction. A type instruction is an instruction that takes the internal name of a class as parameter.

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visitTypeInsn ??? org.objectweb.asm.MethodVisitor

??:

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

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

visitCode

public void visitCode()

???????: org.objectweb.asm.MethodVisitor

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

??:

visitCode ??? org.objectweb.asm.MethodVisitor

visitLocalVariable

public void visitLocalVariable(java.lang.String s,
                               java.lang.String s1,
                               java.lang.String s2,
                               org.objectweb.asm.Label label,
                               org.objectweb.asm.Label label1,
                               int i)

???????: org.objectweb.asm.MethodVisitor

Visits a local variable declaration.

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visitLocalVariable ??? org.objectweb.asm.MethodVisitor

??:

s - the name of a local variable.

s1 - the type descriptor of this local variable.

s2 - the type signature of this local variable. May be null if the local variable type does not use generic types.

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

label1 - the last instruction corresponding to the scope of this local variable (exclusive).

i - the local variable's index.

visitInsn

public void visitInsn(int opcode)

???????: org.objectweb.asm.MethodVisitor

Visits a zero operand instruction.

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visitInsn ??? org.objectweb.asm.MethodVisitor

??:

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.