Package org.objectweb.asm.commons

Provides some useful class and method adapters.

See: Description

Interface Summary

Interface	Description
TableSwitchGenerator	A code generator for switch statements.

Class Summary

Class	Description
AdviceAdapter	A MethodVisitor to insert before, after and around advices in methods and constructors.
AnalyzerAdapter	A MethodVisitor that keeps track of stack map frame changes between AnalyzerAdapter.visitFrame(int, int, Object[], int, Object[]) calls.
AnnotationRemapper	An AnnotationVisitor that remaps types with a Remapper.
ClassRemapper	A ClassVisitor that remaps types with a Remapper.
CodeSizeEvaluator	A MethodVisitor that approximates the size of the methods it visits.
FieldRemapper	A FieldVisitor that remaps types with a Remapper.
GeneratorAdapter	A MethodVisitor with convenient methods to generate code.
InstructionAdapter	A MethodVisitor providing a more detailed API to generate and transform instructions.
JSRInlinerAdapter	A MethodVisitor that removes JSR instructions and inlines the referenced subroutines.
LocalVariablesSorter	A MethodVisitor that renumbers local variables in their order of appearance.
Method	A named method descriptor.
MethodRemapper	A MethodVisitor that remaps types with a Remapper.
ModuleHashesAttribute	A ModuleHashes attribute.
ModuleRemapper	A ModuleVisitor that remaps types with a Remapper.
ModuleResolutionAttribute	A ModuleResolution attribute.
ModuleTargetAttribute	A ModuleTarget attribute.
Remapper	A class responsible for remapping types and names.
SerialVersionUIDAdder	A ClassVisitor that adds a serial version unique identifier to a class if missing.
SignatureRemapper	A SignatureVisitor that remaps types with a Remapper.
SimpleRemapper	A Remapper using a Map to define its mapping.
StaticInitMerger	A ClassVisitor that merges <clinit> methods into a single one.
TryCatchBlockSorter	A MethodVisitor adapter to sort the exception handlers.

Package org.objectweb.asm.commons Description

Provides some useful class and method adapters. The preferred way of using these adapters is by chaining them together and to custom adapters (instead of inheriting from them). Indeed this approach provides more combination possibilities than inheritance. For instance, suppose you want to implement an adapter MyAdapter than needs sorted local variables and intermediate stack map frame values taking into account the local variables sort. By using inheritance, this would require MyAdapter to extend AnalyzerAdapter, itself extending LocalVariablesSorter. But AnalyzerAdapter is not a subclass of LocalVariablesSorter, so this is not possible. On the contrary, by using delegation, you can make LocalVariablesSorter delegate to AnalyzerAdapter, itself delegating to MyAdapter. In this case AnalyzerAdapter computes intermediate frames based on the output of LocalVariablesSorter, and MyAdapter can add new locals by calling the newLocal method on LocalVariablesSorter, and can get the stack map frame state before each instruction by reading the locals and stack fields in AnalyzerAdapter (this requires references from MyAdapter back to LocalVariablesSorter and AnalyzerAdapter).