Package org.objectweb.asm.commons
package org.objectweb.asm.commons
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).
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ClassDescriptionA
MethodVisitor
to insert before, after and around advices in methods and constructors.AMethodVisitor
that keeps track of stack map frame changes betweenAnalyzerAdapter.visitFrame(int, int, Object[], int, Object[])
calls.AnAnnotationVisitor
that remaps types with aRemapper
.AClassVisitor
that remaps types with aRemapper
.AMethodVisitor
that approximates the size of the methods it visits.AFieldVisitor
that remaps types with aRemapper
.AMethodVisitor
with convenient methods to generate code.AMethodVisitor
providing a more detailed API to generate and transform instructions.AMethodVisitor
that removes JSR instructions and inlines the referenced subroutines.AMethodVisitor
that renumbers local variables in their order of appearance.A named method descriptor.AMethodVisitor
that remaps types with aRemapper
.A ModuleHashes attribute.AModuleVisitor
that remaps types with aRemapper
.A ModuleResolution attribute.A ModuleTarget attribute.ARecordComponentVisitor
that remaps types with aRemapper
.A class responsible for remapping types and names.AClassVisitor
that adds a serial version unique identifier to a class if missing.ASignatureVisitor
that remaps types with aRemapper
.AClassVisitor
that merges <clinit> methods into a single one.A code generator for switch statements.AMethodVisitor
adapter to sort the exception handlers.