proguard.optimize.peephole

Class LineNumberLinearizer

java.lang.Object

proguard.optimize.peephole.LineNumberLinearizer

All Implemented Interfaces:

proguard.classfile.attribute.visitor.AttributeVisitor, proguard.classfile.attribute.visitor.LineNumberInfoVisitor, proguard.classfile.visitor.ClassVisitor, proguard.classfile.visitor.MemberVisitor, Pass

public class LineNumberLinearizer
extends java.lang.Object
implements Pass, proguard.classfile.visitor.ClassVisitor, proguard.classfile.visitor.MemberVisitor, proguard.classfile.attribute.visitor.AttributeVisitor, proguard.classfile.attribute.visitor.LineNumberInfoVisitor

This pass disambiguates line numbers, in the classes that it visits. It shifts line numbers that originate from different classes (e.g. due to method inlining or class merging) to blocks that don't overlap with the main line numbers and with each other. The line numbers then uniquely identify the inlined and merged code in the classes.

Field Summary

Fields

Modifier and Type	Field and Description
static int	SHIFT_ROUNDING

Constructor Summary

Constructors

Constructor and Description
LineNumberLinearizer()

Method Summary

Modifier and Type	Method and Description
void	execute(AppView appView) Disambiguates the line numbers of all program classes, after optimizations like method inlining and class merging.
void	visitAnyAttribute(proguard.classfile.Clazz clazz, proguard.classfile.attribute.Attribute attribute)
void	visitAnyClass(proguard.classfile.Clazz clazz)
void	visitCodeAttribute(proguard.classfile.Clazz clazz, proguard.classfile.Method method, proguard.classfile.attribute.CodeAttribute codeAttribute)
void	visitLineNumberInfo(proguard.classfile.Clazz clazz, proguard.classfile.Method method, proguard.classfile.attribute.CodeAttribute codeAttribute, proguard.classfile.attribute.LineNumberInfo lineNumberInfo)
void	visitLineNumberTableAttribute(proguard.classfile.Clazz clazz, proguard.classfile.Method method, proguard.classfile.attribute.CodeAttribute codeAttribute, proguard.classfile.attribute.LineNumberTableAttribute lineNumberTableAttribute)
void	visitProgramClass(proguard.classfile.ProgramClass programClass)
void	visitProgramMethod(proguard.classfile.ProgramClass programClass, proguard.classfile.ProgramMethod programMethod)

Methods inherited from class java.lang.Object

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

Methods inherited from interface proguard.pass.Pass

getName

Methods inherited from interface proguard.classfile.visitor.ClassVisitor

visitLibraryClass

Methods inherited from interface proguard.classfile.visitor.MemberVisitor

visitAnyMember, visitLibraryField, visitLibraryMember, visitLibraryMethod, visitProgramField, visitProgramMember

Methods inherited from interface proguard.classfile.attribute.visitor.AttributeVisitor

visitAnnotationDefaultAttribute, visitAnyAnnotationsAttribute, visitAnyParameterAnnotationsAttribute, visitAnyTypeAnnotationsAttribute, visitBootstrapMethodsAttribute, visitConstantValueAttribute, visitDeprecatedAttribute, visitDeprecatedAttribute, visitDeprecatedAttribute, visitDeprecatedAttribute, visitEnclosingMethodAttribute, visitExceptionsAttribute, visitInnerClassesAttribute, visitLocalVariableTableAttribute, visitLocalVariableTypeTableAttribute, visitMethodParametersAttribute, visitModuleAttribute, visitModuleMainClassAttribute, visitModulePackagesAttribute, visitNestHostAttribute, visitNestMembersAttribute, visitPermittedSubclassesAttribute, visitRecordAttribute, visitRuntimeInvisibleAnnotationsAttribute, visitRuntimeInvisibleAnnotationsAttribute, visitRuntimeInvisibleAnnotationsAttribute, visitRuntimeInvisibleAnnotationsAttribute, visitRuntimeInvisibleAnnotationsAttribute, visitRuntimeInvisibleParameterAnnotationsAttribute, visitRuntimeInvisibleTypeAnnotationsAttribute, visitRuntimeInvisibleTypeAnnotationsAttribute, visitRuntimeInvisibleTypeAnnotationsAttribute, visitRuntimeInvisibleTypeAnnotationsAttribute, visitRuntimeInvisibleTypeAnnotationsAttribute, visitRuntimeInvisibleTypeAnnotationsAttribute, visitRuntimeVisibleAnnotationsAttribute, visitRuntimeVisibleAnnotationsAttribute, visitRuntimeVisibleAnnotationsAttribute, visitRuntimeVisibleAnnotationsAttribute, visitRuntimeVisibleAnnotationsAttribute, visitRuntimeVisibleParameterAnnotationsAttribute, visitRuntimeVisibleTypeAnnotationsAttribute, visitRuntimeVisibleTypeAnnotationsAttribute, visitRuntimeVisibleTypeAnnotationsAttribute, visitRuntimeVisibleTypeAnnotationsAttribute, visitRuntimeVisibleTypeAnnotationsAttribute, visitRuntimeVisibleTypeAnnotationsAttribute, visitSignatureAttribute, visitSignatureAttribute, visitSignatureAttribute, visitSignatureAttribute, visitSignatureAttribute, visitSourceDebugExtensionAttribute, visitSourceDirAttribute, visitSourceFileAttribute, visitStackMapAttribute, visitStackMapTableAttribute, visitSyntheticAttribute, visitSyntheticAttribute, visitSyntheticAttribute, visitSyntheticAttribute, visitUnknownAttribute

Field Detail

SHIFT_ROUNDING

public static final int SHIFT_ROUNDING

See Also:

Constant Field Values

Constructor Detail

LineNumberLinearizer

public LineNumberLinearizer()

Method Detail

execute

public void execute(AppView appView)

Disambiguates the line numbers of all program classes, after optimizations like method inlining and class merging.

Specified by:

execute in interface Pass

visitAnyClass

public void visitAnyClass(proguard.classfile.Clazz clazz)

Specified by:

visitAnyClass in interface proguard.classfile.visitor.ClassVisitor

visitProgramClass

public void visitProgramClass(proguard.classfile.ProgramClass programClass)

Specified by:

visitProgramClass in interface proguard.classfile.visitor.ClassVisitor

visitProgramMethod

public void visitProgramMethod(proguard.classfile.ProgramClass programClass,
                               proguard.classfile.ProgramMethod programMethod)

Specified by:

visitProgramMethod in interface proguard.classfile.visitor.MemberVisitor

visitAnyAttribute

public void visitAnyAttribute(proguard.classfile.Clazz clazz,
                              proguard.classfile.attribute.Attribute attribute)

Specified by:

visitAnyAttribute in interface proguard.classfile.attribute.visitor.AttributeVisitor

visitCodeAttribute

public void visitCodeAttribute(proguard.classfile.Clazz clazz,
                               proguard.classfile.Method method,
                               proguard.classfile.attribute.CodeAttribute codeAttribute)

Specified by:

visitCodeAttribute in interface proguard.classfile.attribute.visitor.AttributeVisitor

visitLineNumberTableAttribute

public void visitLineNumberTableAttribute(proguard.classfile.Clazz clazz,
                                          proguard.classfile.Method method,
                                          proguard.classfile.attribute.CodeAttribute codeAttribute,
                                          proguard.classfile.attribute.LineNumberTableAttribute lineNumberTableAttribute)

Specified by:

visitLineNumberTableAttribute in interface proguard.classfile.attribute.visitor.AttributeVisitor

visitLineNumberInfo

public void visitLineNumberInfo(proguard.classfile.Clazz clazz,
                                proguard.classfile.Method method,
                                proguard.classfile.attribute.CodeAttribute codeAttribute,
                                proguard.classfile.attribute.LineNumberInfo lineNumberInfo)

Specified by:

visitLineNumberInfo in interface proguard.classfile.attribute.visitor.LineNumberInfoVisitor