Package org.objectweb.asm.commons
Class StaticInitMerger
- java.lang.Object
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- org.objectweb.asm.ClassVisitor
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- org.objectweb.asm.commons.StaticInitMerger
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public class StaticInitMerger extends ClassVisitor
AClassVisitor
that merges <clinit> methods into a single one. All the existing <clinit> methods are renamed, and a new one is created, which calls all the renamed methods.
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Field Summary
Fields Modifier and Type Field Description private MethodVisitor
mergedClinitVisitor
The MethodVisitor for the merged <clinit> method.private int
numClinitMethods
The number of <clinit> methods visited so far.private java.lang.String
owner
The internal name of the visited class.private java.lang.String
renamedClinitMethodPrefix
The prefix to use to rename the existing <clinit> methods.-
Fields inherited from class org.objectweb.asm.ClassVisitor
api, cv
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Constructor Summary
Constructors Modifier Constructor Description protected
StaticInitMerger(int api, java.lang.String prefix, ClassVisitor classVisitor)
Constructs a newStaticInitMerger
.StaticInitMerger(java.lang.String prefix, ClassVisitor classVisitor)
Constructs a newStaticInitMerger
.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
visit(int version, int access, java.lang.String name, java.lang.String signature, java.lang.String superName, java.lang.String[] interfaces)
Visits the header of the class.void
visitEnd()
Visits the end of the class.MethodVisitor
visitMethod(int access, java.lang.String name, java.lang.String descriptor, java.lang.String signature, java.lang.String[] exceptions)
Visits a method of the class.-
Methods inherited from class org.objectweb.asm.ClassVisitor
getDelegate, visitAnnotation, visitAttribute, visitField, visitInnerClass, visitModule, visitNestHost, visitNestMember, visitOuterClass, visitPermittedSubclass, visitRecordComponent, visitSource, visitTypeAnnotation
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Field Detail
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owner
private java.lang.String owner
The internal name of the visited class.
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renamedClinitMethodPrefix
private final java.lang.String renamedClinitMethodPrefix
The prefix to use to rename the existing <clinit> methods.
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numClinitMethods
private int numClinitMethods
The number of <clinit> methods visited so far.
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mergedClinitVisitor
private MethodVisitor mergedClinitVisitor
The MethodVisitor for the merged <clinit> method.
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Constructor Detail
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StaticInitMerger
public StaticInitMerger(java.lang.String prefix, ClassVisitor classVisitor)
Constructs a newStaticInitMerger
. Subclasses must not use this constructor. Instead, they must use theStaticInitMerger(int, String, ClassVisitor)
version.- Parameters:
prefix
- the prefix to use to rename the existing <clinit> methods.classVisitor
- the class visitor to which this visitor must delegate method calls. May be null.
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StaticInitMerger
protected StaticInitMerger(int api, java.lang.String prefix, ClassVisitor classVisitor)
Constructs a newStaticInitMerger
.- Parameters:
api
- the ASM API version implemented by this visitor. Must be one of theASM
x values inOpcodes
.prefix
- the prefix to use to rename the existing <clinit> methods.classVisitor
- the class visitor to which this visitor must delegate method calls. May be null.
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Method Detail
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visit
public void visit(int version, int access, java.lang.String name, java.lang.String signature, java.lang.String superName, java.lang.String[] interfaces)
Description copied from class:ClassVisitor
Visits the header of the class.- Overrides:
visit
in classClassVisitor
- Parameters:
version
- the class version. The minor version is stored in the 16 most significant bits, and the major version in the 16 least significant bits.access
- the class's access flags (seeOpcodes
). This parameter also indicates if the class is deprecatedOpcodes.ACC_DEPRECATED
or a recordOpcodes.ACC_RECORD
.name
- the internal name of the class (seeType.getInternalName()
).signature
- the signature of this class. May be null if the class is not a generic one, and does not extend or implement generic classes or interfaces.superName
- the internal of name of the super class (seeType.getInternalName()
). For interfaces, the super class isObject
. May be null, but only for theObject
class.interfaces
- the internal names of the class's interfaces (seeType.getInternalName()
). May be null.
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visitMethod
public MethodVisitor visitMethod(int access, java.lang.String name, java.lang.String descriptor, java.lang.String signature, java.lang.String[] exceptions)
Description copied from class:ClassVisitor
Visits a method of the class. This method must return a newMethodVisitor
instance (or null) each time it is called, i.e., it should not return a previously returned visitor.- Overrides:
visitMethod
in classClassVisitor
- Parameters:
access
- the method's access flags (seeOpcodes
). This parameter also indicates if the method is synthetic and/or deprecated.name
- the method's name.descriptor
- the method's descriptor (seeType
).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 (seeType.getInternalName()
). May be null.- Returns:
- an object to visit the byte code of the method, or null if this class visitor is not interested in visiting the code of this method.
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visitEnd
public void visitEnd()
Description copied from class:ClassVisitor
Visits the end of the class. This method, which is the last one to be called, is used to inform the visitor that all the fields and methods of the class have been visited.- Overrides:
visitEnd
in classClassVisitor
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