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Java Source Code / Java Documentation » Rule Engine » drolls Rule Engine » org.drools.asm.util 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   org.drools.asm.MethodAdapter
      org.drools.asm.util.CheckMethodAdapter

CheckMethodAdapter
public class CheckMethodAdapter extends MethodAdapter (Code)
A MethodAdapter that checks that its methods are properly used. More precisely this code 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), but does not check the sequence of instructions. For example, in a method whose signature is void m (), the invalid instruction IRETURN, or the invalid sequence IADD L2I will not be detected by this code adapter.
author:
   Eric Bruneton



Constructor Summary
public  CheckMethodAdapter(MethodVisitor cv)
     Constructs a new CheckMethodAdapter object.

Method Summary
static  voidcheckConstant(Object cst)
     Checks that the given value is an Integer , a Float , a Long , a Double or a String .
static  voidcheckDesc(String desc, boolean canBeVoid)
     Checks that the given string is a valid type descriptor.
static  intcheckDesc(String desc, int start, boolean canBeVoid)
     Checks that a the given substring is a valid type descriptor.
Parameters:
  desc - the string to be checked.
Parameters:
  start - index of the first character of the identifier (inclusive).
Parameters:
  canBeVoid - true if V can be considered valid.
 voidcheckEndCode()
     Checks that the visitMaxs method has not been called.
 voidcheckEndMethod()
     Checks that the visitEnd method has not been called.
static  voidcheckIdentifier(String name, String msg)
     Checks that the given string is a valid Java identifier.
static  voidcheckIdentifier(String name, int start, int end, String msg)
     Checks that the given substring is a valid Java identifier.
Parameters:
  name - the string to be checked.
Parameters:
  start - index of the first character of the identifier (inclusive).
Parameters:
  end - index of the last character of the identifier (exclusive).
static  voidcheckInternalName(String name, String msg)
     Checks that the given string is a valid internal class name.
static  voidcheckInternalName(String name, int start, int end, String msg)
     Checks that the given substring is a valid internal class name.
Parameters:
  name - the string to be checked.
Parameters:
  start - index of the first character of the identifier (inclusive).
Parameters:
  end - index of the last character of the identifier (exclusive).
 voidcheckLabel(Label label, boolean checkVisited, String msg)
     Checks that the given label is not null.
static  voidcheckMethodDesc(String desc)
     Checks that the given string is a valid method descriptor.
static  voidcheckMethodIdentifier(String name, String msg)
     Checks that the given string is a valid Java identifier or is equal to '<init>' or '<clinit>'.
static  voidcheckOpcode(int opcode, int type)
     Checks that the type of the given opcode is equal to the given type.
static  voidcheckSignedByte(int value, String msg)
     Checks that the given value is a signed byte.
static  voidcheckSignedShort(int value, String msg)
     Checks that the given value is a signed short.
 voidcheckStartCode()
     Checks that the visitCode method has been called.
static  voidcheckUnsignedShort(int value, String msg)
     Checks that the given value is an unsigned short.
public  AnnotationVisitorvisitAnnotation(String desc, boolean visible)
    
public  AnnotationVisitorvisitAnnotationDefault()
    
public  voidvisitAttribute(Attribute attr)
    
public  voidvisitCode()
    
public  voidvisitEnd()
    
public  voidvisitFieldInsn(int opcode, String owner, String name, String desc)
    
public  voidvisitIincInsn(int var, int increment)
    
public  voidvisitInsn(int opcode)
    
public  voidvisitIntInsn(int opcode, int operand)
    
public  voidvisitJumpInsn(int opcode, Label label)
    
public  voidvisitLabel(Label label)
    
public  voidvisitLdcInsn(Object cst)
    
public  voidvisitLineNumber(int line, Label start)
    
public  voidvisitLocalVariable(String name, String desc, String signature, Label start, Label end, int index)
    
public  voidvisitLookupSwitchInsn(Label dflt, int keys, Label labels)
    
public  voidvisitMaxs(int maxStack, int maxLocals)
    
public  voidvisitMethodInsn(int opcode, String owner, String name, String desc)
    
public  voidvisitMultiANewArrayInsn(String desc, int dims)
    
public  AnnotationVisitorvisitParameterAnnotation(int parameter, String desc, boolean visible)
    
public  voidvisitTableSwitchInsn(int min, int max, Label dflt, Label labels)
    
public  voidvisitTryCatchBlock(Label start, Label end, Label handler, String type)
    
public  voidvisitTypeInsn(int opcode, String desc)
    
public  voidvisitVarInsn(int opcode, int var)
    


Constructor Detail
CheckMethodAdapter
public CheckMethodAdapter(MethodVisitor cv)(Code)
Constructs a new CheckMethodAdapter object.
Parameters:
  cv - the code visitor to which this adapter must delegate calls.




Method Detail
checkConstant
static void checkConstant(Object cst)(Code)
Checks that the given value is an Integer , a Float , a Long , a Double or a String .
Parameters:
  cst - the value to be checked.



checkDesc
static void checkDesc(String desc, boolean canBeVoid)(Code)
Checks that the given string is a valid type descriptor.
Parameters:
  desc - the string to be checked.
Parameters:
  canBeVoid - true if V can be considered valid.



checkDesc
static int checkDesc(String desc, int start, boolean canBeVoid)(Code)
Checks that a the given substring is a valid type descriptor.
Parameters:
  desc - the string to be checked.
Parameters:
  start - index of the first character of the identifier (inclusive).
Parameters:
  canBeVoid - true if V can be considered valid. the index of the last character of the type decriptor, plus one.



checkEndCode
void checkEndCode()(Code)
Checks that the visitMaxs method has not been called.



checkEndMethod
void checkEndMethod()(Code)
Checks that the visitEnd method has not been called.



checkIdentifier
static void checkIdentifier(String name, String msg)(Code)
Checks that the given string is a valid Java identifier.
Parameters:
  name - the string to be checked.
Parameters:
  msg - a message to be used in case of error.



checkIdentifier
static void checkIdentifier(String name, int start, int end, String msg)(Code)
Checks that the given substring is a valid Java identifier.
Parameters:
  name - the string to be checked.
Parameters:
  start - index of the first character of the identifier (inclusive).
Parameters:
  end - index of the last character of the identifier (exclusive). -1is equivalent to name.length() if name is notnull.
Parameters:
  msg - a message to be used in case of error.



checkInternalName
static void checkInternalName(String name, String msg)(Code)
Checks that the given string is a valid internal class name.
Parameters:
  name - the string to be checked.
Parameters:
  msg - a message to be used in case of error.



checkInternalName
static void checkInternalName(String name, int start, int end, String msg)(Code)
Checks that the given substring is a valid internal class name.
Parameters:
  name - the string to be checked.
Parameters:
  start - index of the first character of the identifier (inclusive).
Parameters:
  end - index of the last character of the identifier (exclusive). -1is equivalent to name.length() if name is notnull.
Parameters:
  msg - a message to be used in case of error.



checkLabel
void checkLabel(Label label, boolean checkVisited, String msg)(Code)
Checks that the given label is not null. This method can also check that the label has been visited.
Parameters:
  label - the label to be checked.
Parameters:
  checkVisited - true to check that the label has beenvisited.
Parameters:
  msg - a message to be used in case of error.



checkMethodDesc
static void checkMethodDesc(String desc)(Code)
Checks that the given string is a valid method descriptor.
Parameters:
  desc - the string to be checked.



checkMethodIdentifier
static void checkMethodIdentifier(String name, String msg)(Code)
Checks that the given string is a valid Java identifier or is equal to '<init>' or '<clinit>'.
Parameters:
  name - the string to be checked.
Parameters:
  msg - a message to be used in case of error.



checkOpcode
static void checkOpcode(int opcode, int type)(Code)
Checks that the type of the given opcode is equal to the given type.
Parameters:
  opcode - the opcode to be checked.
Parameters:
  type - the expected opcode type.



checkSignedByte
static void checkSignedByte(int value, String msg)(Code)
Checks that the given value is a signed byte.
Parameters:
  value - the value to be checked.
Parameters:
  msg - an message to be used in case of error.



checkSignedShort
static void checkSignedShort(int value, String msg)(Code)
Checks that the given value is a signed short.
Parameters:
  value - the value to be checked.
Parameters:
  msg - an message to be used in case of error.



checkStartCode
void checkStartCode()(Code)
Checks that the visitCode method has been called.



checkUnsignedShort
static void checkUnsignedShort(int value, String msg)(Code)
Checks that the given value is an unsigned short.
Parameters:
  value - the value to be checked.
Parameters:
  msg - an message to be used in case of error.



visitAnnotation
public AnnotationVisitor visitAnnotation(String desc, boolean visible)(Code)



visitAnnotationDefault
public AnnotationVisitor visitAnnotationDefault()(Code)



visitAttribute
public void visitAttribute(Attribute attr)(Code)



visitCode
public void visitCode()(Code)



visitEnd
public void visitEnd()(Code)



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



visitIincInsn
public void visitIincInsn(int var, int increment)(Code)



visitInsn
public void visitInsn(int opcode)(Code)



visitIntInsn
public void visitIntInsn(int opcode, int operand)(Code)



visitJumpInsn
public void visitJumpInsn(int opcode, Label label)(Code)



visitLabel
public void visitLabel(Label label)(Code)



visitLdcInsn
public void visitLdcInsn(Object cst)(Code)



visitLineNumber
public void visitLineNumber(int line, Label start)(Code)



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



visitLookupSwitchInsn
public void visitLookupSwitchInsn(Label dflt, int keys, Label labels)(Code)



visitMaxs
public void visitMaxs(int maxStack, int maxLocals)(Code)



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



visitMultiANewArrayInsn
public void visitMultiANewArrayInsn(String desc, int dims)(Code)



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



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



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



visitTypeInsn
public void visitTypeInsn(int opcode, String desc)(Code)



visitVarInsn
public void visitVarInsn(int opcode, int var)(Code)



Fields inherited from org.drools.asm.MethodAdapter
protected MethodVisitor mv(Code)(Java Doc)

Methods inherited from org.drools.asm.MethodAdapter
public AnnotationVisitor visitAnnotation(String desc, boolean visible)(Code)(Java Doc)
public AnnotationVisitor visitAnnotationDefault()(Code)(Java Doc)
public void visitAttribute(Attribute attr)(Code)(Java Doc)
public void visitCode()(Code)(Java Doc)
public void visitEnd()(Code)(Java Doc)
public void visitFieldInsn(int opcode, String owner, String name, String desc)(Code)(Java Doc)
public void visitIincInsn(int var, int increment)(Code)(Java Doc)
public void visitInsn(int opcode)(Code)(Java Doc)
public void visitIntInsn(int opcode, int operand)(Code)(Java Doc)
public void visitJumpInsn(int opcode, Label label)(Code)(Java Doc)
public void visitLabel(Label label)(Code)(Java Doc)
public void visitLdcInsn(Object cst)(Code)(Java Doc)
public void visitLineNumber(int line, Label start)(Code)(Java Doc)
public void visitLocalVariable(String name, String desc, String signature, Label start, Label end, int index)(Code)(Java Doc)
public void visitLookupSwitchInsn(Label dflt, int keys, Label labels)(Code)(Java Doc)
public void visitMaxs(int maxStack, int maxLocals)(Code)(Java Doc)
public void visitMethodInsn(int opcode, String owner, String name, String desc)(Code)(Java Doc)
public void visitMultiANewArrayInsn(String desc, int dims)(Code)(Java Doc)
public AnnotationVisitor visitParameterAnnotation(int parameter, String desc, boolean visible)(Code)(Java Doc)
public void visitTableSwitchInsn(int min, int max, Label dflt, Label labels)(Code)(Java Doc)
public void visitTryCatchBlock(Label start, Label end, Label handler, String type)(Code)(Java Doc)
public void visitTypeInsn(int opcode, String desc)(Code)(Java Doc)
public void visitVarInsn(int opcode, int var)(Code)(Java Doc)

Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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