net.sourceforge.cobertura.instrument.pass1

Class DetectDuplicatedCodeMethodVisitor

java.lang.Object

org.objectweb.asm.MethodVisitor

net.sourceforge.cobertura.instrument.ContextMethodAwareMethodAdapter

net.sourceforge.cobertura.instrument.pass1.DetectDuplicatedCodeMethodVisitor

public class DetectDuplicatedCodeMethodVisitor
extends ContextMethodAwareMethodAdapter

Detects duplicates in a single analyzed method of ASM code. Applies found information about duplicates into duplicatesCollector structure. See DetectDuplicatedCodeClassVisitor about reasons for the class.

Author:

piotr.tabor@gmail.com

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private static class	DetectDuplicatedCodeMethodVisitor.LineIdWithCodeFootstamp Represents pair of lineId and CodeFootstamp connected with that DetectDuplicatedCodeMethodVisitor.LineIdWithCodeFootstamp.lineId

Field Summary

Fields

Modifier and Type	Field and Description
private CodeFootstamp	currentLineFootstamp CodeFootstamp of currently analyzed block of code.
private java.util.Map<java.lang.Integer,java.util.Map<java.lang.Integer,java.lang.Integer>>	duplicatesCollector Map of (lineNumber -> (duplicate lineId -> origin lineId)).
private java.util.Map<java.lang.Integer,java.util.List<DetectDuplicatedCodeMethodVisitor.LineIdWithCodeFootstamp>>	line2label2codefootstamp Map of (lineNumber -> (list of pairs: lineId,CodeFootstamp for the lineId))).
private org.apache.log4j.Logger	logger

Fields inherited from class net.sourceforge.cobertura.instrument.ContextMethodAwareMethodAdapter

className, lastLineId, lineIdGenerator, methodName, methodSignature

Fields inherited from class org.objectweb.asm.MethodVisitor

api, mv

Constructor Summary

Constructors

Constructor and Description
DetectDuplicatedCodeMethodVisitor(org.objectweb.asm.MethodVisitor mv, java.util.Map<java.lang.Integer,java.util.Map<java.lang.Integer,java.lang.Integer>> duplicatesCollector, java.lang.String className, java.lang.String methodName, java.lang.String methodSignature, java.util.concurrent.atomic.AtomicInteger lineIdGenerator)

Method Summary

Modifier and Type	Method and Description
void	putDuplicatedLinesIntoMap(java.util.Map<java.lang.Integer,java.util.Map<java.lang.Integer,java.lang.Integer>> res) Analyzes (compare) all footstamps stored in line2label2codefootstamp and add found duplicated into duplicatesCollector
private java.util.Map<java.lang.Integer,java.lang.Integer>	putDuplicates(java.util.List<DetectDuplicatedCodeMethodVisitor.LineIdWithCodeFootstamp> listOfFootstamps) Analyzes (compares) a list of duplicates connected to the line with the same number and add found duplicated into duplicatesCollector
void	visitEnd()
void	visitFieldInsn(int access, java.lang.String name, java.lang.String description, java.lang.String signature)
void	visitIincInsn(int opCode, int variable)
void	visitInsn(int opCode)
void	visitIntInsn(int opCode, int variable)
void	visitJumpInsn(int opCode, org.objectweb.asm.Label label)
void	visitLabel(org.objectweb.asm.Label label)
void	visitLdcInsn(java.lang.Object obj)
void	visitLineNumber(int lineNumber, org.objectweb.asm.Label label) Starts a new block and assigns a new currentLineFootstamp.
void	visitLookupSwitchInsn(org.objectweb.asm.Label arg0, int[] arg1, org.objectweb.asm.Label[] arg2)
void	visitMethodInsn(int opCode, java.lang.String className, java.lang.String methodName, java.lang.String description)
void	visitMultiANewArrayInsn(java.lang.String type, int arg1)
void	visitTableSwitchInsn(int arg0, int arg1, org.objectweb.asm.Label arg2, org.objectweb.asm.Label[] arg3)

Methods inherited from class org.objectweb.asm.MethodVisitor

visitAnnotation, visitAnnotationDefault, visitAttribute, visitCode, visitFrame, visitInsnAnnotation, visitInvokeDynamicInsn, visitLocalVariable, visitLocalVariableAnnotation, visitMaxs, visitMethodInsn, visitParameter, visitParameterAnnotation, visitTryCatchAnnotation, visitTryCatchBlock, visitTypeAnnotation, visitTypeInsn, visitVarInsn

Methods inherited from class java.lang.Object

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

Field Detail

logger

private final org.apache.log4j.Logger logger

line2label2codefootstamp

private final java.util.Map<java.lang.Integer,java.util.List<DetectDuplicatedCodeMethodVisitor.LineIdWithCodeFootstamp>> line2label2codefootstamp

Map of (lineNumber -> (list of pairs: lineId,CodeFootstamp for the lineId))).

duplicatesCollector

private final java.util.Map<java.lang.Integer,java.util.Map<java.lang.Integer,java.lang.Integer>> duplicatesCollector

Map of (lineNumber -> (duplicate lineId -> origin lineId)). This structure is filled with a new reasults at the visitEnd() method.

currentLineFootstamp

private CodeFootstamp currentLineFootstamp

CodeFootstamp of currently analyzed block of code. We will append to that variable events that we will see in the current block of code.

Constructor Detail

DetectDuplicatedCodeMethodVisitor

public DetectDuplicatedCodeMethodVisitor(org.objectweb.asm.MethodVisitor mv,
                                         java.util.Map<java.lang.Integer,java.util.Map<java.lang.Integer,java.lang.Integer>> duplicatesCollector,
                                         java.lang.String className,
                                         java.lang.String methodName,
                                         java.lang.String methodSignature,
                                         java.util.concurrent.atomic.AtomicInteger lineIdGenerator)

Method Detail

visitLineNumber

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

Starts a new block and assigns a new currentLineFootstamp.

Put's the new DetectDuplicatedCodeMethodVisitor.LineIdWithCodeFootstamp into line2label2codefootstamp

Overrides:

visitLineNumber in class ContextMethodAwareMethodAdapter

visitLabel

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

Overrides:

visitLabel in class org.objectweb.asm.MethodVisitor

visitFieldInsn

public void visitFieldInsn(int access,
                           java.lang.String name,
                           java.lang.String description,
                           java.lang.String signature)

Overrides:

visitFieldInsn in class org.objectweb.asm.MethodVisitor

visitInsn

public void visitInsn(int opCode)

Overrides:

visitInsn in class org.objectweb.asm.MethodVisitor

visitIntInsn

public void visitIntInsn(int opCode,
                         int variable)

Overrides:

visitIntInsn in class org.objectweb.asm.MethodVisitor

visitIincInsn

public void visitIincInsn(int opCode,
                          int variable)

Overrides:

visitIincInsn in class org.objectweb.asm.MethodVisitor

visitJumpInsn

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

Overrides:

visitJumpInsn in class org.objectweb.asm.MethodVisitor

visitLdcInsn

public void visitLdcInsn(java.lang.Object obj)

Overrides:

visitLdcInsn in class org.objectweb.asm.MethodVisitor

visitMethodInsn

public void visitMethodInsn(int opCode,
                            java.lang.String className,
                            java.lang.String methodName,
                            java.lang.String description)

Overrides:

visitMethodInsn in class org.objectweb.asm.MethodVisitor

visitMultiANewArrayInsn

public void visitMultiANewArrayInsn(java.lang.String type,
                                    int arg1)

Overrides:

visitMultiANewArrayInsn in class org.objectweb.asm.MethodVisitor

visitLookupSwitchInsn

public void visitLookupSwitchInsn(org.objectweb.asm.Label arg0,
                                  int[] arg1,
                                  org.objectweb.asm.Label[] arg2)

Overrides:

visitLookupSwitchInsn in class org.objectweb.asm.MethodVisitor

visitTableSwitchInsn

public void visitTableSwitchInsn(int arg0,
                                 int arg1,
                                 org.objectweb.asm.Label arg2,
                                 org.objectweb.asm.Label[] arg3)

Overrides:

visitTableSwitchInsn in class org.objectweb.asm.MethodVisitor

visitEnd

public void visitEnd()

Overrides:

visitEnd in class org.objectweb.asm.MethodVisitor

putDuplicatedLinesIntoMap

public void putDuplicatedLinesIntoMap(java.util.Map<java.lang.Integer,java.util.Map<java.lang.Integer,java.lang.Integer>> res)

Analyzes (compare) all footstamps stored in line2label2codefootstamp and add found duplicated into duplicatesCollector

putDuplicates

private java.util.Map<java.lang.Integer,java.lang.Integer> putDuplicates(java.util.List<DetectDuplicatedCodeMethodVisitor.LineIdWithCodeFootstamp> listOfFootstamps)

Analyzes (compares) a list of duplicates connected to the line with the same number and add found duplicated into duplicatesCollector

Parameters:

listOfFootstamps - - list of footstamps connected with a source-code line with the same number

Returns:

A map (duplicate lineId -> origin lineId ) of duplicates found in the listOfFootstams, or NULL if no such duplicates has been found.