org.apache.felix.ipojo.manipulation
Class ClassChecker

java.lang.Object
  org.objectweb.asm.commons.EmptyVisitor
      org.apache.felix.ipojo.manipulation.ClassChecker

All Implemented Interfaces:

org.objectweb.asm.AnnotationVisitor, org.objectweb.asm.ClassVisitor, org.objectweb.asm.FieldVisitor, org.objectweb.asm.MethodVisitor, org.objectweb.asm.Opcodes

public class ClassChecker
extends org.objectweb.asm.commons.EmptyVisitor
implements org.objectweb.asm.ClassVisitor, org.objectweb.asm.Opcodes

Checks that a POJO is already manipulated or not. Moreover it allows to get manipulation data about this class.

Author:

Felix Project Team

Nested Class Summary

class	ClassChecker.AnnotationDescriptor Describes a method or constructor annotation.
class	ClassChecker.ArrayAttribute Describes an array attribute.
static class	ClassChecker.EnumAttribute Describes an attribute.
static class	ClassChecker.SimpleAttribute Describes a simple attribute.

Field Summary

Fields inherited from interface org.objectweb.asm.Opcodes

AALOAD, AASTORE, ACC_ABSTRACT, ACC_ANNOTATION, ACC_BRIDGE, ACC_DEPRECATED, ACC_ENUM, ACC_FINAL, ACC_INTERFACE, ACC_NATIVE, ACC_PRIVATE, ACC_PROTECTED, ACC_PUBLIC, ACC_STATIC, ACC_STRICT, ACC_SUPER, ACC_SYNCHRONIZED, ACC_SYNTHETIC, ACC_TRANSIENT, ACC_VARARGS, ACC_VOLATILE, ACONST_NULL, ALOAD, ANEWARRAY, ARETURN, ARRAYLENGTH, ASTORE, ATHROW, BALOAD, BASTORE, BIPUSH, CALOAD, CASTORE, CHECKCAST, D2F, D2I, D2L, DADD, DALOAD, DASTORE, DCMPG, DCMPL, DCONST_0, DCONST_1, DDIV, DLOAD, DMUL, DNEG, DOUBLE, DREM, DRETURN, DSTORE, DSUB, DUP, DUP_X1, DUP_X2, DUP2, DUP2_X1, DUP2_X2, F_APPEND, F_CHOP, F_FULL, F_NEW, F_SAME, F_SAME1, F2D, F2I, F2L, FADD, FALOAD, FASTORE, FCMPG, FCMPL, FCONST_0, FCONST_1, FCONST_2, FDIV, FLOAD, FLOAT, FMUL, FNEG, FREM, FRETURN, FSTORE, FSUB, GETFIELD, GETSTATIC, GOTO, I2B, I2C, I2D, I2F, I2L, I2S, IADD, IALOAD, IAND, IASTORE, ICONST_0, ICONST_1, ICONST_2, ICONST_3, ICONST_4, ICONST_5, ICONST_M1, IDIV, IF_ACMPEQ, IF_ACMPNE, IF_ICMPEQ, IF_ICMPGE, IF_ICMPGT, IF_ICMPLE, IF_ICMPLT, IF_ICMPNE, IFEQ, IFGE, IFGT, IFLE, IFLT, IFNE, IFNONNULL, IFNULL, IINC, ILOAD, IMUL, INEG, INSTANCEOF, INTEGER, INVOKEDYNAMIC, INVOKEDYNAMIC_OWNER, INVOKEINTERFACE, INVOKESPECIAL, INVOKESTATIC, INVOKEVIRTUAL, IOR, IREM, IRETURN, ISHL, ISHR, ISTORE, ISUB, IUSHR, IXOR, JSR, L2D, L2F, L2I, LADD, LALOAD, LAND, LASTORE, LCMP, LCONST_0, LCONST_1, LDC, LDIV, LLOAD, LMUL, LNEG, LONG, LOOKUPSWITCH, LOR, LREM, LRETURN, LSHL, LSHR, LSTORE, LSUB, LUSHR, LXOR, MONITORENTER, MONITOREXIT, MULTIANEWARRAY, NEW, NEWARRAY, NOP, NULL, POP, POP2, PUTFIELD, PUTSTATIC, RET, RETURN, SALOAD, SASTORE, SIPUSH, SWAP, T_BOOLEAN, T_BYTE, T_CHAR, T_DOUBLE, T_FLOAT, T_INT, T_LONG, T_SHORT, TABLESWITCH, TOP, UNINITIALIZED_THIS, V1_1, V1_2, V1_3, V1_4, V1_5, V1_6, V1_7

Constructor Summary

ClassChecker()

Method Summary

Map	getFields() Get collected fields.
List	getInnerClasses()
List	getInterfaces() Get collected interfaces.
List	getMethods() Get collected methods.
String	getSuperClass()
boolean	isalreadyManipulated() Check if the class was already manipulated.
void	visit(int version, int access, String name, String signature, String superName, String[] interfaces) Visit the class.
org.objectweb.asm.FieldVisitor	visitField(int access, String name, String desc, String signature, Object value) Check if the _cm field already exists.
void	visitInnerClass(String name, String outerName, String innerName, int access) Add the inner class to the list of inner class to manipulate.
org.objectweb.asm.MethodVisitor	visitMethod(int access, String name, String desc, String signature, String[] exceptions) Visit a method.

Methods inherited from class org.objectweb.asm.commons.EmptyVisitor

visit, visitAnnotation, visitAnnotation, visitAnnotationDefault, visitArray, visitAttribute, visitCode, visitEnd, visitEnum, visitFieldInsn, visitFrame, visitIincInsn, visitInsn, visitIntInsn, visitJumpInsn, visitLabel, visitLdcInsn, visitLineNumber, visitLocalVariable, visitLookupSwitchInsn, visitMaxs, visitMethodInsn, visitMultiANewArrayInsn, visitOuterClass, visitParameterAnnotation, visitSource, visitTableSwitchInsn, visitTryCatchBlock, visitTypeInsn, visitVarInsn

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.objectweb.asm.ClassVisitor

visitAnnotation, visitAttribute, visitEnd, visitOuterClass, visitSource

Constructor Detail

ClassChecker

public ClassChecker()

Method Detail

visitField

public org.objectweb.asm.FieldVisitor visitField(int access,
                                                 String name,
                                                 String desc,
                                                 String signature,
                                                 Object value)

Check if the _cm field already exists. Update the field list.

Specified by:

visitField in interface org.objectweb.asm.ClassVisitor

Overrides:

visitField in class org.objectweb.asm.commons.EmptyVisitor

Parameters:

access - : access of the field

name - : name of the field

desc - : description of the field

signature - : signature of the field

value - : value of the field (for static field only)

Returns:

the field visitor

See Also:

ClassVisitor.visitField(int, java.lang.String, java.lang.String, java.lang.String, java.lang.Object)

visitInnerClass

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

Add the inner class to the list of inner class to manipulate. The method checks that the inner class is really owned by the implementation class.

Specified by:

visitInnerClass in interface org.objectweb.asm.ClassVisitor

Overrides:

visitInnerClass in class org.objectweb.asm.commons.EmptyVisitor

Parameters:

name - inner class qualified name

outerName - outer class name (may be null for anonymous class)

innerName - inner class simple (i.e. short) name

access - inner class visibility

See Also:

EmptyVisitor.visitInnerClass(java.lang.String, java.lang.String, java.lang.String, int)

isalreadyManipulated

public boolean isalreadyManipulated()

Check if the class was already manipulated.

Returns:

true if the class is already manipulated.

visit

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

Visit the class. Update the implemented interface list.

Specified by:

visit in interface org.objectweb.asm.ClassVisitor

Overrides:

visit in class org.objectweb.asm.commons.EmptyVisitor

Parameters:

version - : version of the class

access - : access of the class

name - : name of the class

signature - : signature of the class

superName - : super class of the class

interfaces - : implemented interfaces.

See Also:

ClassVisitor.visit(int, int, java.lang.String, java.lang.String, java.lang.String, java.lang.String[])

visitMethod

public org.objectweb.asm.MethodVisitor visitMethod(int access,
                                                   String name,
                                                   String desc,
                                                   String signature,
                                                   String[] exceptions)

Visit a method. Update the method list (except if it init or clinit.

Specified by:

visitMethod in interface org.objectweb.asm.ClassVisitor

Overrides:

visitMethod in class org.objectweb.asm.commons.EmptyVisitor

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:

nothing.

See Also:

ClassVisitor.visitMethod(int, java.lang.String, java.lang.String, java.lang.String, java.lang.String[])

getInterfaces

public List getInterfaces()

Get collected interfaces.

Returns:

the interfaces implemented by the component class.

getFields

public Map getFields()

Get collected fields.

Returns:

the field map [field_name, type].

getMethods

public List getMethods()

Get collected methods.

Returns:

the method list of [method, signature].

getSuperClass

public String getSuperClass()

getInnerClasses

public List getInnerClasses()