org.glassfish.hk2.external.org.objectweb.asm.optimizer

Class MethodConstantsCollector

java.lang.Object

org.glassfish.hk2.external.org.objectweb.asm.MethodVisitor

org.glassfish.hk2.external.org.objectweb.asm.optimizer.MethodConstantsCollector

public class MethodConstantsCollector
extends MethodVisitor

An MethodVisitor that collects the Constants of the methods it visits.

Author:

Eric Bruneton

Field Summary

Fields inherited from class org.glassfish.hk2.external.org.objectweb.asm.MethodVisitor

api, mv

Constructor Summary

Constructors

Constructor and Description
MethodConstantsCollector(MethodVisitor mv, ConstantPool cp)

Method Summary

Methods

Modifier and Type	Method and 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	visitFieldInsn(int opcode, String owner, String name, String desc) Visits a field instruction.
AnnotationVisitor	visitInsnAnnotation(int typeRef, TypePath typePath, String desc, boolean visible) Visits an annotation on an instruction.
void	visitInvokeDynamicInsn(String name, String desc, Handle bsm, Object... bsmArgs) Visits an invokedynamic instruction.
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	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, 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.
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.

Methods inherited from class org.glassfish.hk2.external.org.objectweb.asm.MethodVisitor

visitAttribute, visitCode, visitEnd, visitFrame, visitIincInsn, visitInsn, visitIntInsn, visitJumpInsn, visitLabel, visitLookupSwitchInsn, visitMethodInsn, visitTableSwitchInsn, visitVarInsn

Methods inherited from class java.lang.Object

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

Constructor Detail

MethodConstantsCollector

public MethodConstantsCollector(MethodVisitor mv,
                        ConstantPool cp)

Method Detail

visitParameter

public void visitParameter(String name,
                  int access)

Description copied from class: MethodVisitor

Visits a parameter of this method.

Overrides:

visitParameter in class MethodVisitor

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 AnnotationVisitor visitAnnotationDefault()

Description copied from class: MethodVisitor

Visits the default value of this annotation interface method.

Overrides:

visitAnnotationDefault in class MethodVisitor

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.

visitAnnotation

public AnnotationVisitor visitAnnotation(String desc,
                                boolean visible)

Description copied from class: MethodVisitor

Visits an annotation of this method.

Overrides:

visitAnnotation in class MethodVisitor

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.

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 class MethodVisitor

Parameters:

typeRef - a reference to the annotated type. The sort of this type reference must be METHOD_TYPE_PARAMETER, METHOD_TYPE_PARAMETER_BOUND, METHOD_RETURN, METHOD_RECEIVER, METHOD_FORMAL_PARAMETER or THROWS. See 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:

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

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 class MethodVisitor

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.

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 class MethodVisitor

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 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 class MethodVisitor

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

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 class MethodVisitor

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

Description copied from class: MethodVisitor

Visits an invokedynamic instruction.

Overrides:

visitInvokeDynamicInsn in class MethodVisitor

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, 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.

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 class MethodVisitor

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 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.

visitMultiANewArrayInsn

public void visitMultiANewArrayInsn(String desc,
                           int dims)

Description copied from class: MethodVisitor

Visits a MULTIANEWARRAY instruction.

Overrides:

visitMultiANewArrayInsn in class MethodVisitor

Parameters:

desc - an array type descriptor (see Type).

dims - number of dimensions of the array to allocate.

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 class MethodVisitor

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 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:

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

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 class MethodVisitor

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).

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 the MethodVisitor.visitTryCatchBlock(org.glassfish.hk2.external.org.objectweb.asm.Label, org.glassfish.hk2.external.org.objectweb.asm.Label, org.glassfish.hk2.external.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 class MethodVisitor

Parameters:

typeRef - a reference to the annotated type. The sort of this type reference must be EXCEPTION_PARAMETER. See 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:

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

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 class MethodVisitor

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.

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 class MethodVisitor

Parameters:

typeRef - a reference to the annotated type. The sort of this type reference must be LOCAL_VARIABLE or RESOURCE_VARIABLE. See 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:

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

visitLineNumber

public void visitLineNumber(int line,
                   Label start)

Description copied from class: MethodVisitor

Visits a line number declaration.

Overrides:

visitLineNumber in class MethodVisitor

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.

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 class MethodVisitor

Parameters:

maxStack - maximum stack size of the method.

maxLocals - maximum number of local variables for the method.