Package javassist.bytecode.analysis
Bytecode Analysis API.
This package provides an API for performing data-flow analysis on a method's bytecode.
This allows the user to determine the type state of the stack and local variable table
at the start of every instruction. In addition this API can be used to validate
bytecode, find dead bytecode, and identify unnecessary checkcasts.
Look at ControlFlow
class first for details.
The users of this package must know the specifications of class file and Java bytecode. For more details, read this book:
- Tim Lindholm and Frank Yellin, "The Java Virtual Machine Specification 2nd Ed.", Addison-Wesley, 1999.
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Class Summary Class Description Analyzer A data-flow analyzer that determines the type state of the stack and local variable table at every reachable instruction in a method.ControlFlow Represents the control flow graph of a given method.ControlFlow.Block Basic block.ControlFlow.Catcher Represents a catch clause.ControlFlow.Node A node of (post) dominator trees.Executor Executor is responsible for modeling the effects of a JVM instruction on a frame.Frame Represents the stack frame and local variable table at a particular point in time.FramePrinter A utility class for printing a merged view of the frame state and the instructions of a method.MultiArrayType Represents an array ofMultiType
instances.MultiType MultiType represents an unresolved type.Subroutine Represents a nested method subroutine (marked by JSR and RET).SubroutineScanner Discovers the subroutines in a method, and tracks all callers.Type Represents a JVM type in data-flow analysis.Util A set of common utility methods.