Package org.spongepowered.asm.util

Class Bytecode

java.lang.Object
org.spongepowered.asm.util.Bytecode
public final class Bytecode extends Object
Utility methods for working with bytecode via ASM

  • Nested Class Summary

    Nested Classes
    Modifier and Type
    Class
    Description
    static class 
    Bytecode.DelegateInitialiser
    Information bundle returned from findDelegateInit(org.objectweb.asm.tree.MethodNode, java.lang.String, java.lang.String)
    static enum 
    Bytecode.Visibility
    Ordinal member visibility level.

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final int[]
    CONSTANTS_ALL
    All constant opcodes
    static final int[]
    CONSTANTS_DOUBLE
    Double constant opcodes
    static final int[]
    CONSTANTS_FLOAT
    Float constant opcodes
    static final int[]
    CONSTANTS_INT
    Integer constant opcodes
    static final int[]
    CONSTANTS_LONG
    Long constant opcodes

  • Method Summary

    Modifier and Type
    Method
    Description
    static String
    changeDescriptorReturnType(String desc, String returnType)
    Changes the return type of a method descriptor to the specified symbol
    static Map<org.objectweb.asm.tree.LabelNode,org.objectweb.asm.tree.LabelNode>
    cloneLabels(org.objectweb.asm.tree.InsnList source)
    Clones all of the labels in the source instruction list and returns the clones in a map of old label -> new label.
    static void
    compareBridgeMethods(org.objectweb.asm.tree.MethodNode a, org.objectweb.asm.tree.MethodNode b)
    Compares two synthetic bridge methods and throws an exception if they are not compatible.
    static boolean
    compareFlags(org.objectweb.asm.tree.FieldNode f1, org.objectweb.asm.tree.FieldNode f2, int flag)
    Check whether the status of the specified flag matches on both of the supplied arguments.
    static boolean
    compareFlags(org.objectweb.asm.tree.MethodNode m1, org.objectweb.asm.tree.MethodNode m2, int flag)
    Check whether the status of the specified flag matches on both of the supplied arguments.
    static String
    describeNode(org.objectweb.asm.tree.AbstractInsnNode node)
    Gets a description of the supplied node for debugging purposes
    static String
    describeNode(org.objectweb.asm.tree.AbstractInsnNode node, boolean listFormat)
    Gets a description of the supplied node for debugging purposes
    static void
    dumpClass(byte[] bytes)
    Dumps the output of CheckClassAdapter.verify to System.out
    static void
    dumpClass(org.objectweb.asm.tree.ClassNode classNode)
    Dumps the output of CheckClassAdapter.verify to System.out
    static Bytecode.DelegateInitialiser
    findDelegateInit(org.objectweb.asm.tree.MethodNode ctor, String superName, String ownerName)
    Find the call to super() or this() in a constructor.
    static org.objectweb.asm.tree.AbstractInsnNode
    findInsn(org.objectweb.asm.tree.MethodNode method, int opcode)
    Find the first insn node with a matching opcode in the specified method
    static org.objectweb.asm.tree.MethodNode
    findMethod(org.objectweb.asm.tree.ClassNode classNode, String name, String desc)
    Finds a method given the method descriptor
    static String
    generateDescriptor(Object returnType, Object... args)
    Generate a bytecode descriptor from the supplied tokens.
    static String
    generateDescriptor(org.objectweb.asm.Type returnType, org.objectweb.asm.Type... args)
    Generate a bytecode descriptor from the supplied types.
    static int
    getArgsSize(org.objectweb.asm.Type[] args)
    Get the size of the specified args array in local variable terms (eg.
    static int
    getArgsSize(org.objectweb.asm.Type[] args, int startIndex, int endIndex)
    Get the size of the specified args array in local variable terms (eg.
    static String
    getBoxingType(org.objectweb.asm.Type type)
    Get the boxing type name for the specified type, if it is a primitive.
    static Object
    getConstant(org.objectweb.asm.tree.AbstractInsnNode insn)
    If the supplied instruction is a constant, returns the constant value from the instruction
    static org.objectweb.asm.Type
    getConstantType(org.objectweb.asm.tree.AbstractInsnNode insn)
    Returns the Type of a particular constant instruction's payload
    static String
    getDescriptor(org.objectweb.asm.Type... args)
    Generate a method descriptor without return type for the supplied args array
    static String
    getDescriptor(org.objectweb.asm.Type returnType, org.objectweb.asm.Type... args)
    Generate a method descriptor with the specified types
    static int
    getFirstNonArgLocalIndex(org.objectweb.asm.tree.MethodNode method)
    Get the first variable index in the supplied method which is not an argument or "this" reference, this corresponds to the size of the arguments passed in to the method plus an extra spot for "this" if the method is non-static
    static int
    getFirstNonArgLocalIndex(org.objectweb.asm.Type[] args, boolean includeThis)
    Get the first non-arg variable index based on the supplied arg array and whether to include the "this" reference, this corresponds to the size of the arguments passed in to the method plus an extra spot for "this" is specified
    static int
    getMaxLineNumber(org.objectweb.asm.tree.ClassNode classNode, int min, int pad)
    Compute the largest line number found in the specified class
    static String
    getOpcodeName(int opcode)
    Finds a constant name match for the supplied node's opcode
    static String
    getOpcodeName(org.objectweb.asm.tree.AbstractInsnNode node)
    Finds a constant name match for the supplied node's opcode
    static String
    getSimpleName(String desc)
    Returns the simple name from an object type descriptor (in L...; format)
    static String
    getSimpleName(org.objectweb.asm.Type type)
    Returns the simple name of a type representing a class
    static org.objectweb.asm.Type[]
    getTypes(Class<?>... classes)
    Get an array of Types from an array of classes.
    static String
    getUnboxingMethod(org.objectweb.asm.Type type)
    Get the unboxing method name for the specified primitive type's corresponding reference type.
    static Bytecode.Visibility
    getVisibility(org.objectweb.asm.tree.FieldNode field)
    Returns the ordinal visibility of the supplied argument where a higher value equals higher "visibility": Bytecode.Visibility.PRIVATE Bytecode.Visibility.PROTECTED Bytecode.Visibility.PACKAGE Bytecode.Visibility.PUBLIC
    static Bytecode.Visibility
    getVisibility(org.objectweb.asm.tree.MethodNode method)
    Returns the ordinal visibility of the supplied argument where a higher value equals higher "visibility": Bytecode.Visibility.PRIVATE Bytecode.Visibility.PROTECTED Bytecode.Visibility.PACKAGE Bytecode.Visibility.PUBLIC
    static boolean
    hasFlag(org.objectweb.asm.tree.ClassNode classNode, int flag)
    Check whether the specified flag is set on the specified class
    static boolean
    hasFlag(org.objectweb.asm.tree.FieldNode field, int flag)
    Check whether the specified flag is set on the specified field
    static boolean
    hasFlag(org.objectweb.asm.tree.MethodNode method, int flag)
    Check whether the specified flag is set on the specified method
    static boolean
    isConstant(org.objectweb.asm.tree.AbstractInsnNode insn)
    Gets whether the supplied instruction is a constant instruction (eg.
    static boolean
    isStatic(org.objectweb.asm.tree.FieldNode field)
    Returns true if the supplied field node is static
    static boolean
    isStatic(org.objectweb.asm.tree.MethodNode method)
    Returns true if the supplied method node is static
    static boolean
    isVirtual(org.objectweb.asm.tree.MethodNode method)
    Checks whether the supplied method is virtual.
    static void
    loadArgs(org.objectweb.asm.Type[] args, org.objectweb.asm.tree.InsnList insns, int pos)
    Injects appropriate LOAD opcodes into the supplied InsnList appropriate for each entry in the args array starting at pos
    static void
    loadArgs(org.objectweb.asm.Type[] args, org.objectweb.asm.tree.InsnList insns, int start, int end)
    Injects appropriate LOAD opcodes into the supplied InsnList appropriate for each entry in the args array starting at start (inclusive) and ending at end (inclusive)
    static void
    loadArgs(org.objectweb.asm.Type[] args, org.objectweb.asm.tree.InsnList insns, int start, int end, org.objectweb.asm.Type[] casts)
    Injects appropriate LOAD opcodes into the supplied InsnList appropriate for each entry in the args array starting at start (inclusive) and ending at end (inclusive)
    static void
    merge(org.objectweb.asm.tree.ClassNode source, org.objectweb.asm.tree.ClassNode dest)
    Perform a naïve merge of ClassNode members onto a target ClassNode
    static boolean
    methodHasLineNumbers(org.objectweb.asm.tree.MethodNode method)
    Returns true if the supplied method contains any line number information
    static int
    parseOpcodeName(String opcodeName)
    Finds a matching constant in the Opcodes interface for the specified opcode name.
    static void
    printMethod(org.objectweb.asm.tree.MethodNode method)
    Prints a representation of a method's instructions to stderr
    static void
    printMethodWithOpcodeIndices(org.objectweb.asm.tree.MethodNode method)
    Prints a representation of a method's instructions to stderr
    static void
    printNode(org.objectweb.asm.tree.AbstractInsnNode node)
    Prints a representation of the specified insn node to stderr
    static void
    replace(org.objectweb.asm.tree.ClassNode source, org.objectweb.asm.tree.ClassNode dest)
    Replace all values in a target ClassNode with values from the Source
    static void
    setVisibility(org.objectweb.asm.tree.ClassNode classNode, int access)
    Set the visibility of the specified class, leaving other access flags unchanged
    static void
    setVisibility(org.objectweb.asm.tree.ClassNode classNode, Bytecode.Visibility visibility)
    Set the visibility of the specified class, leaving other access flags unchanged
    static void
    setVisibility(org.objectweb.asm.tree.FieldNode field, int access)
    Set the visibility of the specified member, leaving other access flags unchanged
    static void
    setVisibility(org.objectweb.asm.tree.FieldNode field, Bytecode.Visibility visibility)
    Set the visibility of the specified member, leaving other access flags unchanged
    static void
    setVisibility(org.objectweb.asm.tree.MethodNode method, int access)
    Set the visibility of the specified member, leaving other access flags unchanged
    static void
    setVisibility(org.objectweb.asm.tree.MethodNode method, Bytecode.Visibility visibility)
    Set the visibility of the specified member, leaving other access flags unchanged
    static void
    textify(org.objectweb.asm.tree.ClassNode classNode, OutputStream out)
    Runs textifier on the specified class node and dumps the output to the specified output stream
    static void
    textify(org.objectweb.asm.tree.MethodNode methodNode, OutputStream out)
    Runs textifier on the specified method node and dumps the output to the specified output stream

    Methods inherited from class java.lang.Object

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

  • Field Details

    • CONSTANTS_INT

      public static final int[] CONSTANTS_INT
      Integer constant opcodes

    • CONSTANTS_FLOAT

      public static final int[] CONSTANTS_FLOAT
      Float constant opcodes

    • CONSTANTS_DOUBLE

      public static final int[] CONSTANTS_DOUBLE
      Double constant opcodes

    • CONSTANTS_LONG

      public static final int[] CONSTANTS_LONG
      Long constant opcodes

    • CONSTANTS_ALL

      public static final int[] CONSTANTS_ALL
      All constant opcodes

  • Method Details

    • findMethod

      public static org.objectweb.asm.tree.MethodNode findMethod(org.objectweb.asm.tree.ClassNode classNode, String name, String desc)
      Finds a method given the method descriptor
      Parameters:
      classNode - the class to scan
      name - the method name
      desc - the method descriptor
      Returns:
      discovered method node or null

    • findInsn

      public static org.objectweb.asm.tree.AbstractInsnNode findInsn(org.objectweb.asm.tree.MethodNode method, int opcode)
      Find the first insn node with a matching opcode in the specified method
      Parameters:
      method - method to search
      opcode - opcode to search for
      Returns:
      found node or null if not found

    • findDelegateInit

      public static Bytecode.DelegateInitialiser findDelegateInit(org.objectweb.asm.tree.MethodNode ctor, String superName, String ownerName)
      Find the call to super() or this() in a constructor. This attempts to locate the first call to <init> which isn't an inline call to another object ctor being passed into the super invocation.
      Parameters:
      ctor - ctor to scan
      superName - name of superclass
      ownerName - name of owning class
      Returns:
      Call to super(), this() or DelegateInitialiser.NONE if not found

    • textify

      public static void textify(org.objectweb.asm.tree.ClassNode classNode, OutputStream out)
      Runs textifier on the specified class node and dumps the output to the specified output stream
      Parameters:
      classNode - class to textify
      out - output stream

    • textify

      public static void textify(org.objectweb.asm.tree.MethodNode methodNode, OutputStream out)
      Runs textifier on the specified method node and dumps the output to the specified output stream
      Parameters:
      methodNode - method to textify
      out - output stream

    • dumpClass

      public static void dumpClass(org.objectweb.asm.tree.ClassNode classNode)
      Dumps the output of CheckClassAdapter.verify to System.out
      Parameters:
      classNode - the ClassNode to verify

    • dumpClass

      public static void dumpClass(byte[] bytes)
      Dumps the output of CheckClassAdapter.verify to System.out
      Parameters:
      bytes - the bytecode of the class to check

    • printMethodWithOpcodeIndices

      public static void printMethodWithOpcodeIndices(org.objectweb.asm.tree.MethodNode method)
      Prints a representation of a method's instructions to stderr
      Parameters:
      method - Method to print

    • printMethod

      public static void printMethod(org.objectweb.asm.tree.MethodNode method)
      Prints a representation of a method's instructions to stderr
      Parameters:
      method - Method to print

    • printNode

      public static void printNode(org.objectweb.asm.tree.AbstractInsnNode node)
      Prints a representation of the specified insn node to stderr
      Parameters:
      node - Node to print

    • describeNode

      public static String describeNode(org.objectweb.asm.tree.AbstractInsnNode node)
      Gets a description of the supplied node for debugging purposes
      Parameters:
      node - node to describe
      Returns:
      human-readable description of node

    • describeNode

      public static String describeNode(org.objectweb.asm.tree.AbstractInsnNode node, boolean listFormat)
      Gets a description of the supplied node for debugging purposes
      Parameters:
      node - node to describe
      listFormat - format the returned string so that returned nodes line up (node names aligned to 14 chars)
      Returns:
      human-readable description of node

    • getOpcodeName

      public static String getOpcodeName(org.objectweb.asm.tree.AbstractInsnNode node)
      Finds a constant name match for the supplied node's opcode
      Parameters:
      node - Node to query for opcode
      Returns:
      opcode name

    • getOpcodeName

      public static String getOpcodeName(int opcode)
      Finds a constant name match for the supplied node's opcode
      Parameters:
      opcode - Opcode to look up
      Returns:
      opcode name

    • parseOpcodeName

      public static int parseOpcodeName(String opcodeName)
      Finds a matching constant in the Opcodes interface for the specified opcode name. Supported formats are raw numeric values, bare constant names (eg. ACONST_NULL) or qualified names (eg. Opcodes.ACONST_NULL). Returns the value if found or -1 if not matched. Note that no validation is performed on numeric opcode values.
      Parameters:
      opcodeName - Opcode string to match
      Returns:
      matched opcode value or -1 if not matched.

    • methodHasLineNumbers

      public static boolean methodHasLineNumbers(org.objectweb.asm.tree.MethodNode method)
      Returns true if the supplied method contains any line number information
      Parameters:
      method - Method to scan
      Returns:
      true if a line number node is located

    • isStatic

      public static boolean isStatic(org.objectweb.asm.tree.MethodNode method)
      Returns true if the supplied method node is static
      Parameters:
      method - method node
      Returns:
      true if the method has the Opcodes.ACC_STATIC flag

    • isStatic

      public static boolean isStatic(org.objectweb.asm.tree.FieldNode field)
      Returns true if the supplied field node is static
      Parameters:
      field - field node
      Returns:
      true if the field has the Opcodes.ACC_STATIC flag

    • getFirstNonArgLocalIndex

      public static int getFirstNonArgLocalIndex(org.objectweb.asm.tree.MethodNode method)
      Get the first variable index in the supplied method which is not an argument or "this" reference, this corresponds to the size of the arguments passed in to the method plus an extra spot for "this" if the method is non-static
      Parameters:
      method - MethodNode to inspect
      Returns:
      first available local index which is NOT used by a method argument or "this"

    • getFirstNonArgLocalIndex

      public static int getFirstNonArgLocalIndex(org.objectweb.asm.Type[] args, boolean includeThis)
      Get the first non-arg variable index based on the supplied arg array and whether to include the "this" reference, this corresponds to the size of the arguments passed in to the method plus an extra spot for "this" is specified
      Parameters:
      args - Method arguments
      includeThis - Whether to include a slot for "this" (generally true for all non-static methods)
      Returns:
      first available local index which is NOT used by a method argument or "this"

    • getArgsSize

      public static int getArgsSize(org.objectweb.asm.Type[] args)
      Get the size of the specified args array in local variable terms (eg. doubles and longs take two spaces)
      Parameters:
      args - Method argument types as array
      Returns:
      size of the specified arguments array in terms of stack slots

    • getArgsSize

      public static int getArgsSize(org.objectweb.asm.Type[] args, int startIndex, int endIndex)
      Get the size of the specified args array in local variable terms (eg. doubles and longs take two spaces) using startIndex (inclusive) and endIndex (exclusive) to determine which arguments to process.
      Parameters:
      args - Method argument types as array
      startIndex - Start index in the array, not related to arg size
      endIndex - End index (exclusive) in the array, not related to size
      Returns:
      size of the specified arguments array in terms of stack slots

    • loadArgs

      public static void loadArgs(org.objectweb.asm.Type[] args, org.objectweb.asm.tree.InsnList insns, int pos)
      Injects appropriate LOAD opcodes into the supplied InsnList appropriate for each entry in the args array starting at pos
      Parameters:
      args - Argument types
      insns - Instruction List to inject into
      pos - Start position

    • loadArgs

      public static void loadArgs(org.objectweb.asm.Type[] args, org.objectweb.asm.tree.InsnList insns, int start, int end)
      Injects appropriate LOAD opcodes into the supplied InsnList appropriate for each entry in the args array starting at start (inclusive) and ending at end (inclusive)
      Parameters:
      args - Argument types
      insns - Instruction List to inject into
      start - Start position
      end - End position

    • loadArgs

      public static void loadArgs(org.objectweb.asm.Type[] args, org.objectweb.asm.tree.InsnList insns, int start, int end, org.objectweb.asm.Type[] casts)
      Injects appropriate LOAD opcodes into the supplied InsnList appropriate for each entry in the args array starting at start (inclusive) and ending at end (inclusive)
      Parameters:
      args - Argument types
      insns - Instruction List to inject into
      start - Start position
      end - End position
      casts - Type casts array

    • getTypes

      public static org.objectweb.asm.Type[] getTypes(Class<?>... classes)
      Get an array of Types from an array of classes.
      Parameters:
      classes - Array of classes to convert
      Returns:
      Array of types

    • cloneLabels

      public static Map<org.objectweb.asm.tree.LabelNode,org.objectweb.asm.tree.LabelNode> cloneLabels(org.objectweb.asm.tree.InsnList source)
      Clones all of the labels in the source instruction list and returns the clones in a map of old label -> new label. This is used to facilitate the use of AbstractInsnNode.clone(java.util.Map<org.objectweb.asm.tree.LabelNode, org.objectweb.asm.tree.LabelNode>).
      Parameters:
      source - instruction list
      Returns:
      map of existing labels to their cloned counterparts

    • generateDescriptor

      public static String generateDescriptor(org.objectweb.asm.Type returnType, org.objectweb.asm.Type... args)
      Generate a bytecode descriptor from the supplied types.
      Parameters:
      returnType - the method return type, can be null for void
      args - argument types

    • generateDescriptor

      public static String generateDescriptor(Object returnType, Object... args)
      Generate a bytecode descriptor from the supplied tokens. Each token can be a Type, a Class or otherwise is converted in-place by calling toString.
      Parameters:
      returnType - object representing the method return type, can be null for void
      args - objects representing argument types

    • getDescriptor

      public static String getDescriptor(org.objectweb.asm.Type... args)
      Generate a method descriptor without return type for the supplied args array
      Parameters:
      args - argument types
      Returns:
      method descriptor without return type

    • getDescriptor

      public static String getDescriptor(org.objectweb.asm.Type returnType, org.objectweb.asm.Type... args)
      Generate a method descriptor with the specified types
      Parameters:
      returnType - return type
      args - argument types
      Returns:
      generated method descriptor

    • changeDescriptorReturnType

      public static String changeDescriptorReturnType(String desc, String returnType)
      Changes the return type of a method descriptor to the specified symbol
      Parameters:
      desc - descriptor to modify
      returnType - new return type
      Returns:
      modified descriptor;

    • getSimpleName

      public static String getSimpleName(org.objectweb.asm.Type type)
      Returns the simple name of a type representing a class
      Parameters:
      type - type
      Returns:
      annotation's simple name

    • getSimpleName

      public static String getSimpleName(String desc)
      Returns the simple name from an object type descriptor (in L...; format)
      Parameters:
      desc - type descriptor
      Returns:
      "simple" name

    • isConstant

      public static boolean isConstant(org.objectweb.asm.tree.AbstractInsnNode insn)
      Gets whether the supplied instruction is a constant instruction (eg. ICONST_1)
      Parameters:
      insn - instruction to check
      Returns:
      true if the supplied instruction is a constant

    • getConstant

      public static Object getConstant(org.objectweb.asm.tree.AbstractInsnNode insn)
      If the supplied instruction is a constant, returns the constant value from the instruction
      Parameters:
      insn - constant instruction to process
      Returns:
      the constant value or null if the value cannot be parsed (null constant is returned as Type.VOID_TYPE)

    • getConstantType

      public static org.objectweb.asm.Type getConstantType(org.objectweb.asm.tree.AbstractInsnNode insn)
      Returns the Type of a particular constant instruction's payload
      Parameters:
      insn - constant instruction
      Returns:
      type of constant or null if it cannot be parsed ( null constant is returned as Type.VOID_TYPE)

    • hasFlag

      public static boolean hasFlag(org.objectweb.asm.tree.ClassNode classNode, int flag)
      Check whether the specified flag is set on the specified class
      Parameters:
      classNode - class node
      flag - flag to check
      Returns:
      True if the specified flag is set in this method's access flags

    • hasFlag

      public static boolean hasFlag(org.objectweb.asm.tree.MethodNode method, int flag)
      Check whether the specified flag is set on the specified method
      Parameters:
      method - method node
      flag - flag to check
      Returns:
      True if the specified flag is set in this method's access flags

    • hasFlag

      public static boolean hasFlag(org.objectweb.asm.tree.FieldNode field, int flag)
      Check whether the specified flag is set on the specified field
      Parameters:
      field - field node
      flag - flag to check
      Returns:
      True if the specified flag is set in this field's access flags

    • compareFlags

      public static boolean compareFlags(org.objectweb.asm.tree.MethodNode m1, org.objectweb.asm.tree.MethodNode m2, int flag)
      Check whether the status of the specified flag matches on both of the supplied arguments.
      Parameters:
      m1 - First method
      m2 - Second method
      flag - flag to compare
      Returns:
      True if the flag is set to the same value on both members

    • compareFlags

      public static boolean compareFlags(org.objectweb.asm.tree.FieldNode f1, org.objectweb.asm.tree.FieldNode f2, int flag)
      Check whether the status of the specified flag matches on both of the supplied arguments.
      Parameters:
      f1 - First field
      f2 - Second field
      flag - flag to compare
      Returns:
      True if the flag is set to the same value on both members

    • isVirtual

      public static boolean isVirtual(org.objectweb.asm.tree.MethodNode method)
      Checks whether the supplied method is virtual. Specifically this method returns true if the method is non-static and has an access level greater than private.
      Parameters:
      method - Method to test
      Returns:
      true if virtual

    • getVisibility

      public static Bytecode.Visibility getVisibility(org.objectweb.asm.tree.MethodNode method)
      Returns the ordinal visibility of the supplied argument where a higher value equals higher "visibility":
      1. Bytecode.Visibility.PRIVATE
      2. Bytecode.Visibility.PROTECTED
      3. Bytecode.Visibility.PACKAGE
      4. Bytecode.Visibility.PUBLIC
      Parameters:
      method - method to get visibility for
      Returns:
      visibility level

    • getVisibility

      public static Bytecode.Visibility getVisibility(org.objectweb.asm.tree.FieldNode field)
      Returns the ordinal visibility of the supplied argument where a higher value equals higher "visibility":
      1. Bytecode.Visibility.PRIVATE
      2. Bytecode.Visibility.PROTECTED
      3. Bytecode.Visibility.PACKAGE
      4. Bytecode.Visibility.PUBLIC
      Parameters:
      field - field to get visibility for
      Returns:
      visibility level

    • setVisibility

      public static void setVisibility(org.objectweb.asm.tree.ClassNode classNode, Bytecode.Visibility visibility)
      Set the visibility of the specified class, leaving other access flags unchanged
      Parameters:
      classNode - class to change
      visibility - new visibility

    • setVisibility

      public static void setVisibility(org.objectweb.asm.tree.MethodNode method, Bytecode.Visibility visibility)
      Set the visibility of the specified member, leaving other access flags unchanged
      Parameters:
      method - method to change
      visibility - new visibility

    • setVisibility

      public static void setVisibility(org.objectweb.asm.tree.FieldNode field, Bytecode.Visibility visibility)
      Set the visibility of the specified member, leaving other access flags unchanged
      Parameters:
      field - field to change
      visibility - new visibility

    • setVisibility

      public static void setVisibility(org.objectweb.asm.tree.ClassNode classNode, int access)
      Set the visibility of the specified class, leaving other access flags unchanged
      Parameters:
      classNode - class to change
      access - new visibility

    • setVisibility

      public static void setVisibility(org.objectweb.asm.tree.MethodNode method, int access)
      Set the visibility of the specified member, leaving other access flags unchanged
      Parameters:
      method - method to change
      access - new visibility

    • setVisibility

      public static void setVisibility(org.objectweb.asm.tree.FieldNode field, int access)
      Set the visibility of the specified member, leaving other access flags unchanged
      Parameters:
      field - field to change
      access - new visibility

    • getMaxLineNumber

      public static int getMaxLineNumber(org.objectweb.asm.tree.ClassNode classNode, int min, int pad)
      Compute the largest line number found in the specified class
      Parameters:
      classNode - Class to inspect
      min - minimum value to return
      pad - amount to pad at the end of files
      Returns:
      computed max

    • getBoxingType

      public static String getBoxingType(org.objectweb.asm.Type type)
      Get the boxing type name for the specified type, if it is a primitive. For non-primitive types, null is returned
      Parameters:
      type - type to box
      Returns:
      boxing type or null

    • getUnboxingMethod

      public static String getUnboxingMethod(org.objectweb.asm.Type type)
      Get the unboxing method name for the specified primitive type's corresponding reference type. For example, if the type passed in is int, then the return value will be intValue. Returns null for non-primitive types.
      Parameters:
      type - primitive type to get unboxing method for
      Returns:
      unboxing method name or null

    • compareBridgeMethods

      public static void compareBridgeMethods(org.objectweb.asm.tree.MethodNode a, org.objectweb.asm.tree.MethodNode b)
      Compares two synthetic bridge methods and throws an exception if they are not compatible.
      Parameters:
      a - Incumbent method
      b - Incoming method

    • merge

      public static void merge(org.objectweb.asm.tree.ClassNode source, org.objectweb.asm.tree.ClassNode dest)
      Perform a naïve merge of ClassNode members onto a target ClassNode
      Parameters:
      source - Source ClassNode to merge from
      dest - Destination ClassNode to merge to

    • replace

      public static void replace(org.objectweb.asm.tree.ClassNode source, org.objectweb.asm.tree.ClassNode dest)
      Replace all values in a target ClassNode with values from the Source
      Parameters:
      source - Source ClassNode to merge from
      dest - Destination ClassNode to merge to