Package org.objectweb.asm.util
Class CheckMethodAdapter
- java.lang.Object
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- org.objectweb.asm.MethodVisitor
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- org.objectweb.asm.util.CheckMethodAdapter
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public class CheckMethodAdapter extends MethodVisitor
AMethodVisitor
that checks that its methods are properly used. More precisely this method adapter checks each instruction individually, i.e., each visit method checks some preconditions based only on its arguments - such as the fact that the given opcode is correct for a given visit method. This adapter can also perform some basic data flow checks (more precisely those that can be performed without the full class hierarchy - seeBasicVerifier
). For instance in a method whose signature is void m (), the invalid instruction IRETURN, or the invalid sequence IADD L2I will be detected if the data flow checks are enabled. These checks are enabled by using theCheckMethodAdapter(int,String,String,MethodVisitor,Map)
constructor. They are not performed if any other constructor is used.- Author:
- Eric Bruneton
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Field Summary
Fields Modifier and Type Field Description int
version
The class version number.-
Fields inherited from class org.objectweb.asm.MethodVisitor
api, mv
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Constructor Summary
Constructors Modifier Constructor Description CheckMethodAdapter(int access, String name, String desc, MethodVisitor cmv, Map<Label,Integer> labels)
Constructs a newCheckMethodAdapter
object.protected
CheckMethodAdapter(int api, MethodVisitor mv, Map<Label,Integer> labels)
Constructs a newCheckMethodAdapter
object.CheckMethodAdapter(MethodVisitor mv)
Constructs a newCheckMethodAdapter
object.CheckMethodAdapter(MethodVisitor mv, Map<Label,Integer> labels)
Constructs a newCheckMethodAdapter
object.
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Method Summary
All Methods Instance Methods Concrete Methods Deprecated Methods Modifier and Type Method Description AnnotationVisitor
visitAnnotation(String desc, boolean visible)
Visits an annotation of this method.AnnotationVisitor
visitAnnotationDefault()
Visits the default value of this annotation interface method.void
visitAttribute(Attribute attr)
Visits a non standard attribute of this method.void
visitCode()
Starts the visit of the method's code, if any (i.e.void
visitEnd()
Visits the end of the 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.AnnotationVisitor
visitInsnAnnotation(int typeRef, TypePath typePath, String desc, boolean visible)
Visits an annotation on an instruction.void
visitIntInsn(int opcode, int operand)
Visits an instruction with a single int operand.void
visitInvokeDynamicInsn(String name, String desc, Handle bsm, Object... bsmArgs)
Visits an invokedynamic instruction.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.AnnotationVisitor
visitLocalVariableAnnotation(int typeRef, TypePath typePath, Label[] start, Label[] end, int[] index, String desc, boolean visible)
Visits an annotation on a local variable type.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)
Deprecated.void
visitMethodInsn(int opcode, String owner, String name, String desc, boolean itf)
Visits a method instruction.void
visitMultiANewArrayInsn(String desc, int dims)
Visits a MULTIANEWARRAY instruction.void
visitParameter(String name, int access)
Visits a parameter of this method.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.AnnotationVisitor
visitTryCatchAnnotation(int typeRef, TypePath typePath, String desc, boolean visible)
Visits an annotation on an exception handler type.void
visitTryCatchBlock(Label start, Label end, Label handler, String type)
Visits a try catch block.AnnotationVisitor
visitTypeAnnotation(int typeRef, TypePath typePath, String desc, boolean visible)
Visits an annotation on a type in the method signature.void
visitTypeInsn(int opcode, String type)
Visits a type instruction.void
visitVarInsn(int opcode, int var)
Visits a local variable instruction.
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Constructor Detail
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CheckMethodAdapter
public CheckMethodAdapter(MethodVisitor mv)
Constructs a newCheckMethodAdapter
object. This method adapter will not perform any data flow check (seeCheckMethodAdapter(int,String,String,MethodVisitor,Map)
). Subclasses must not use this constructor. Instead, they must use theCheckMethodAdapter(int, MethodVisitor, Map)
version.- Parameters:
mv
- the method visitor to which this adapter must delegate calls.
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CheckMethodAdapter
public CheckMethodAdapter(MethodVisitor mv, Map<Label,Integer> labels)
Constructs a newCheckMethodAdapter
object. This method adapter will not perform any data flow check (seeCheckMethodAdapter(int,String,String,MethodVisitor,Map)
). Subclasses must not use this constructor. Instead, they must use theCheckMethodAdapter(int, MethodVisitor, Map)
version.- Parameters:
mv
- the method visitor to which this adapter must delegate calls.labels
- a map of already visited labels (in other methods).- Throws:
IllegalStateException
- If a subclass calls this constructor.
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CheckMethodAdapter
protected CheckMethodAdapter(int api, MethodVisitor mv, Map<Label,Integer> labels)
Constructs a newCheckMethodAdapter
object. This method adapter will not perform any data flow check (seeCheckMethodAdapter(int,String,String,MethodVisitor,Map)
).- Parameters:
api
- the ASM API version implemented by this CheckMethodAdapter. Must be one ofOpcodes.ASM4
orOpcodes.ASM5
.mv
- the method visitor to which this adapter must delegate calls.labels
- a map of already visited labels (in other methods).
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CheckMethodAdapter
public CheckMethodAdapter(int access, String name, String desc, MethodVisitor cmv, Map<Label,Integer> labels)
Constructs a newCheckMethodAdapter
object. This method adapter will perform basic data flow checks. For instance in a method whose signature is void m (), the invalid instruction IRETURN, or the invalid sequence IADD L2I will be detected.- Parameters:
access
- the method's access flags.name
- the method's name.desc
- the method's descriptor (seeType
).cmv
- the method visitor to which this adapter must delegate calls.labels
- a map of already visited labels (in other methods).
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Method Detail
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visitParameter
public void visitParameter(String name, int access)
Description copied from class:MethodVisitor
Visits a parameter of this method.- Overrides:
visitParameter
in classMethodVisitor
- 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 (seeOpcodes
).
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visitAnnotation
public AnnotationVisitor visitAnnotation(String desc, boolean visible)
Description copied from class:MethodVisitor
Visits an annotation of this method.- Overrides:
visitAnnotation
in classMethodVisitor
- Parameters:
desc
- the class descriptor of the annotation class.visible
- true if the annotation is visible at runtime.- Returns:
- a visitor to visit the annotation values, or null if this visitor is not interested in visiting this annotation.
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visitTypeAnnotation
public AnnotationVisitor visitTypeAnnotation(int typeRef, TypePath typePath, String desc, boolean visible)
Description copied from class:MethodVisitor
Visits an annotation on a type in the method signature.- Overrides:
visitTypeAnnotation
in classMethodVisitor
- Parameters:
typeRef
- a reference to the annotated type. The sort of this type reference must beMETHOD_TYPE_PARAMETER
,METHOD_TYPE_PARAMETER_BOUND
,METHOD_RETURN
,METHOD_RECEIVER
,METHOD_FORMAL_PARAMETER
orTHROWS
. SeeTypeReference
.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:
- a visitor to visit the annotation values, or null if this visitor is not interested in visiting this annotation.
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visitAnnotationDefault
public AnnotationVisitor visitAnnotationDefault()
Description copied from class:MethodVisitor
Visits the default value of this annotation interface method.- Overrides:
visitAnnotationDefault
in classMethodVisitor
- Returns:
- 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.
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visitParameterAnnotation
public AnnotationVisitor visitParameterAnnotation(int parameter, String desc, boolean visible)
Description copied from class:MethodVisitor
Visits an annotation of a parameter this method.- Overrides:
visitParameterAnnotation
in classMethodVisitor
- Parameters:
parameter
- the parameter index.desc
- the class descriptor of the annotation class.visible
- true if the annotation is visible at runtime.- Returns:
- a visitor to visit the annotation values, or null if this visitor is not interested in visiting this annotation.
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visitAttribute
public void visitAttribute(Attribute attr)
Description copied from class:MethodVisitor
Visits a non standard attribute of this method.- Overrides:
visitAttribute
in classMethodVisitor
- Parameters:
attr
- an attribute.
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visitCode
public void visitCode()
Description copied from class:MethodVisitor
Starts the visit of the method's code, if any (i.e. non abstract method).- Overrides:
visitCode
in classMethodVisitor
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visitFrame
public void visitFrame(int type, int nLocal, Object[] local, int nStack, Object[] stack)
Description copied from class: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 toV1_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 andstack[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 andlocal
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).- Overrides:
visitFrame
in classMethodVisitor
- Parameters:
type
- the type of this stack map frame. Must beOpcodes.F_NEW
for expanded frames, orOpcodes.F_FULL
,Opcodes.F_APPEND
,Opcodes.F_CHOP
,Opcodes.F_SAME
orOpcodes.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 byOpcodes.TOP
,Opcodes.INTEGER
,Opcodes.FLOAT
,Opcodes.LONG
,Opcodes.DOUBLE
,Opcodes.NULL
orOpcodes.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.
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visitInsn
public void visitInsn(int opcode)
Description copied from class:MethodVisitor
Visits a zero operand instruction.- Overrides:
visitInsn
in classMethodVisitor
- 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.
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visitIntInsn
public void visitIntInsn(int opcode, int operand)
Description copied from class:MethodVisitor
Visits an instruction with a single int operand.- Overrides:
visitIntInsn
in classMethodVisitor
- 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 ofOpcodes.T_BOOLEAN
,Opcodes.T_CHAR
,Opcodes.T_FLOAT
,Opcodes.T_DOUBLE
,Opcodes.T_BYTE
,Opcodes.T_SHORT
,Opcodes.T_INT
orOpcodes.T_LONG
.
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visitVarInsn
public void visitVarInsn(int opcode, int var)
Description copied from class:MethodVisitor
Visits a local variable instruction. A local variable instruction is an instruction that loads or stores the value of a local variable.- Overrides:
visitVarInsn
in classMethodVisitor
- 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.
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visitTypeInsn
public void visitTypeInsn(int opcode, String type)
Description copied from class:MethodVisitor
Visits a type instruction. A type instruction is an instruction that takes the internal name of a class as parameter.- Overrides:
visitTypeInsn
in classMethodVisitor
- 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 (seegetInternalName
).
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visitFieldInsn
public void visitFieldInsn(int opcode, String owner, String name, String desc)
Description copied from class:MethodVisitor
Visits a field instruction. A field instruction is an instruction that loads or stores the value of a field of an object.- Overrides:
visitFieldInsn
in classMethodVisitor
- 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 (seegetInternalName
).name
- the field's name.desc
- the field's descriptor (seeType
).
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visitMethodInsn
@Deprecated public void visitMethodInsn(int opcode, String owner, String name, String desc)
Deprecated.Description copied from class:MethodVisitor
Visits a method instruction. A method instruction is an instruction that invokes a method.- Overrides:
visitMethodInsn
in classMethodVisitor
- 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 (seegetInternalName
).name
- the method's name.desc
- the method's descriptor (seeType
).
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visitMethodInsn
public void visitMethodInsn(int opcode, String owner, String name, String desc, boolean itf)
Description copied from class:MethodVisitor
Visits a method instruction. A method instruction is an instruction that invokes a method.- Overrides:
visitMethodInsn
in classMethodVisitor
- 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 (seegetInternalName
).name
- the method's name.desc
- the method's descriptor (seeType
).itf
- if the method's owner class is an interface.
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visitInvokeDynamicInsn
public void visitInvokeDynamicInsn(String name, String desc, Handle bsm, Object... bsmArgs)
Description copied from class:MethodVisitor
Visits an invokedynamic instruction.- Overrides:
visitInvokeDynamicInsn
in classMethodVisitor
- Parameters:
name
- the method's name.desc
- the method's descriptor (seeType
).bsm
- the bootstrap method.bsmArgs
- the bootstrap method constant arguments. Each argument must be anInteger
,Float
,Long
,Double
,String
,Type
orHandle
value. This method is allowed to modify the content of the array so a caller should expect that this array may change.
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visitJumpInsn
public void visitJumpInsn(int opcode, Label label)
Description copied from class:MethodVisitor
Visits a jump instruction. A jump instruction is an instruction that may jump to another instruction.- Overrides:
visitJumpInsn
in classMethodVisitor
- 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.
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visitLabel
public void visitLabel(Label label)
Description copied from class:MethodVisitor
Visits a label. A label designates the instruction that will be visited just after it.- Overrides:
visitLabel
in classMethodVisitor
- Parameters:
label
- aLabel
object.
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visitLdcInsn
public void visitLdcInsn(Object cst)
Description copied from class: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 }
- Overrides:
visitLdcInsn
in classMethodVisitor
- Parameters:
cst
- the constant to be loaded on the stack. This parameter must be a non nullInteger
, aFloat
, aLong
, aDouble
, aString
, aType
of OBJECT or ARRAY sort for .class constants, for classes whose version is 49.0, aType
of METHOD sort or aHandle
for MethodType and MethodHandle constants, for classes whose version is 51.0.
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visitIincInsn
public void visitIincInsn(int var, int increment)
Description copied from class:MethodVisitor
Visits an IINC instruction.- Overrides:
visitIincInsn
in classMethodVisitor
- Parameters:
var
- index of the local variable to be incremented.increment
- amount to increment the local variable by.
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visitTableSwitchInsn
public void visitTableSwitchInsn(int min, int max, Label dflt, Label... labels)
Description copied from class:MethodVisitor
Visits a TABLESWITCH instruction.- Overrides:
visitTableSwitchInsn
in classMethodVisitor
- 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.
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visitLookupSwitchInsn
public void visitLookupSwitchInsn(Label dflt, int[] keys, Label[] labels)
Description copied from class:MethodVisitor
Visits a LOOKUPSWITCH instruction.- Overrides:
visitLookupSwitchInsn
in classMethodVisitor
- 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.
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visitMultiANewArrayInsn
public void visitMultiANewArrayInsn(String desc, int dims)
Description copied from class:MethodVisitor
Visits a MULTIANEWARRAY instruction.- Overrides:
visitMultiANewArrayInsn
in classMethodVisitor
- Parameters:
desc
- an array type descriptor (seeType
).dims
- number of dimensions of the array to allocate.
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visitInsnAnnotation
public AnnotationVisitor visitInsnAnnotation(int typeRef, TypePath typePath, String desc, boolean visible)
Description copied from class:MethodVisitor
Visits an annotation on an instruction. This method must be called just after the annotated instruction. It can be called several times for the same instruction.- Overrides:
visitInsnAnnotation
in classMethodVisitor
- Parameters:
typeRef
- a reference to the annotated type. The sort of this type reference must beINSTANCEOF
,NEW
,CONSTRUCTOR_REFERENCE
,METHOD_REFERENCE
,CAST
,CONSTRUCTOR_INVOCATION_TYPE_ARGUMENT
,METHOD_INVOCATION_TYPE_ARGUMENT
,CONSTRUCTOR_REFERENCE_TYPE_ARGUMENT
, orMETHOD_REFERENCE_TYPE_ARGUMENT
. SeeTypeReference
.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:
- a visitor to visit the annotation values, or null if this visitor is not interested in visiting this annotation.
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visitTryCatchBlock
public void visitTryCatchBlock(Label start, Label end, Label handler, String type)
Description copied from class:MethodVisitor
Visits a try catch block.- Overrides:
visitTryCatchBlock
in classMethodVisitor
- 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).
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visitTryCatchAnnotation
public AnnotationVisitor visitTryCatchAnnotation(int typeRef, TypePath typePath, String desc, boolean visible)
Description copied from class:MethodVisitor
Visits an annotation on an exception handler type. This method must be called after theMethodVisitor.visitTryCatchBlock(org.objectweb.asm.Label, org.objectweb.asm.Label, org.objectweb.asm.Label, java.lang.String)
for the annotated exception handler. It can be called several times for the same exception handler.- Overrides:
visitTryCatchAnnotation
in classMethodVisitor
- Parameters:
typeRef
- a reference to the annotated type. The sort of this type reference must beEXCEPTION_PARAMETER
. SeeTypeReference
.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:
- a visitor to visit the annotation values, or null if this visitor is not interested in visiting this annotation.
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visitLocalVariable
public void visitLocalVariable(String name, String desc, String signature, Label start, Label end, int index)
Description copied from class:MethodVisitor
Visits a local variable declaration.- Overrides:
visitLocalVariable
in classMethodVisitor
- 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.
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visitLocalVariableAnnotation
public AnnotationVisitor visitLocalVariableAnnotation(int typeRef, TypePath typePath, Label[] start, Label[] end, int[] index, String desc, boolean visible)
Description copied from class:MethodVisitor
Visits an annotation on a local variable type.- Overrides:
visitLocalVariableAnnotation
in classMethodVisitor
- Parameters:
typeRef
- a reference to the annotated type. The sort of this type reference must beLOCAL_VARIABLE
orRESOURCE_VARIABLE
. SeeTypeReference
.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:
- a visitor to visit the annotation values, or null if this visitor is not interested in visiting this annotation.
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visitLineNumber
public void visitLineNumber(int line, Label start)
Description copied from class:MethodVisitor
Visits a line number declaration.- Overrides:
visitLineNumber
in classMethodVisitor
- 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.
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visitMaxs
public void visitMaxs(int maxStack, int maxLocals)
Description copied from class:MethodVisitor
Visits the maximum stack size and the maximum number of local variables of the method.- Overrides:
visitMaxs
in classMethodVisitor
- Parameters:
maxStack
- maximum stack size of the method.maxLocals
- maximum number of local variables for the method.
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visitEnd
public void visitEnd()
Description copied from class: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.- Overrides:
visitEnd
in classMethodVisitor
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