Class Printer

  • Direct Known Subclasses:
    ASMifier, Textifier

    public abstract class Printer
    extends java.lang.Object
    An abstract converter from visit events to text.
    • Field Summary

      Fields 
      Modifier and Type Field Description
      protected int api
      The ASM API version implemented by this class.
      static java.lang.String[] HANDLE_TAG
      The names of the tag field values for Handle.
      static java.lang.String[] OPCODES
      The names of the Java Virtual Machine opcodes.
      protected java.lang.StringBuilder stringBuilder
      The builder used to build strings in the various visit methods.
      java.util.List<java.lang.Object> text
      The text to be printed.
      static java.lang.String[] TYPES
      The names of the operand values of the MethodVisitor.visitIntInsn(int, int) method when opcode is NEWARRAY.
    • Constructor Summary

      Constructors 
      Modifier Constructor Description
      protected Printer​(int api)
      Constructs a new Printer.
    • Method Summary

      All Methods Static Methods Instance Methods Abstract Methods Concrete Methods Deprecated Methods 
      Modifier and Type Method Description
      static void appendString​(java.lang.StringBuilder stringBuilder, java.lang.String string)
      Appends a quoted string to the given string builder.
      java.util.List<java.lang.Object> getText()
      Returns the text constructed by this visitor.
      void print​(java.io.PrintWriter printWriter)
      Prints the text constructed by this visitor.
      abstract void visit​(int version, int access, java.lang.String name, java.lang.String signature, java.lang.String superName, java.lang.String[] interfaces)
      Class header.
      abstract void visit​(java.lang.String name, java.lang.Object value)
      Annotation value.
      Printer visitAnnotableParameterCount​(int parameterCount, boolean visible)
      Number of method parameters that can have annotations.
      abstract Printer visitAnnotation​(java.lang.String name, java.lang.String descriptor)
      Nested annotation value.
      abstract Printer visitAnnotationDefault()
      Method default annotation.
      abstract void visitAnnotationEnd()
      Annotation end.
      abstract Printer visitArray​(java.lang.String name)
      Annotation array value.
      abstract Printer visitClassAnnotation​(java.lang.String descriptor, boolean visible)
      Class annotation.
      abstract void visitClassAttribute​(Attribute attribute)
      Class attribute.
      abstract void visitClassEnd()
      Class end.
      Printer visitClassTypeAnnotation​(int typeRef, TypePath typePath, java.lang.String descriptor, boolean visible)
      Class type annotation.
      abstract void visitCode()
      Method start.
      abstract void visitEnum​(java.lang.String name, java.lang.String descriptor, java.lang.String value)
      Annotation enum value.
      void visitExport​(java.lang.String packaze, int access, java.lang.String... modules)
      Module export.
      abstract Printer visitField​(int access, java.lang.String name, java.lang.String descriptor, java.lang.String signature, java.lang.Object value)
      Class field.
      abstract Printer visitFieldAnnotation​(java.lang.String descriptor, boolean visible)
      Field annotation.
      abstract void visitFieldAttribute​(Attribute attribute)
      Field attribute.
      abstract void visitFieldEnd()
      Field end.
      abstract void visitFieldInsn​(int opcode, java.lang.String owner, java.lang.String name, java.lang.String descriptor)
      Method instruction.
      Printer visitFieldTypeAnnotation​(int typeRef, TypePath typePath, java.lang.String descriptor, boolean visible)
      Field type annotation.
      abstract void visitFrame​(int type, int numLocal, java.lang.Object[] local, int numStack, java.lang.Object[] stack)
      Method stack frame.
      abstract void visitIincInsn​(int var, int increment)
      Method instruction.
      abstract void visitInnerClass​(java.lang.String name, java.lang.String outerName, java.lang.String innerName, int access)
      Class inner name.
      abstract void visitInsn​(int opcode)
      Method instruction.
      Printer visitInsnAnnotation​(int typeRef, TypePath typePath, java.lang.String descriptor, boolean visible)
      Instruction type annotation.
      abstract void visitIntInsn​(int opcode, int operand)
      Method instruction.
      abstract void visitInvokeDynamicInsn​(java.lang.String name, java.lang.String descriptor, Handle bootstrapMethodHandle, java.lang.Object... bootstrapMethodArguments)
      Method instruction.
      abstract void visitJumpInsn​(int opcode, Label label)
      Method jump instruction.
      abstract void visitLabel​(Label label)
      Method label.
      abstract void visitLdcInsn​(java.lang.Object value)
      Method instruction.
      abstract void visitLineNumber​(int line, Label start)
      Method debug info.
      abstract void visitLocalVariable​(java.lang.String name, java.lang.String descriptor, java.lang.String signature, Label start, Label end, int index)
      Method debug info.
      Printer visitLocalVariableAnnotation​(int typeRef, TypePath typePath, Label[] start, Label[] end, int[] index, java.lang.String descriptor, boolean visible)
      Local variable type annotation.
      abstract void visitLookupSwitchInsn​(Label dflt, int[] keys, Label[] labels)
      Method instruction.
      void visitMainClass​(java.lang.String mainClass)
      Module main class.
      abstract void visitMaxs​(int maxStack, int maxLocals)
      Method max stack and max locals.
      abstract Printer visitMethod​(int access, java.lang.String name, java.lang.String descriptor, java.lang.String signature, java.lang.String[] exceptions)
      Class method.
      abstract Printer visitMethodAnnotation​(java.lang.String descriptor, boolean visible)
      Method annotation.
      abstract void visitMethodAttribute​(Attribute attribute)
      Method attribute.
      abstract void visitMethodEnd()
      Method end.
      void visitMethodInsn​(int opcode, java.lang.String owner, java.lang.String name, java.lang.String descriptor)
      void visitMethodInsn​(int opcode, java.lang.String owner, java.lang.String name, java.lang.String descriptor, boolean isInterface)
      Method instruction.
      Printer visitMethodTypeAnnotation​(int typeRef, TypePath typePath, java.lang.String descriptor, boolean visible)
      Method type annotation.
      Printer visitModule​(java.lang.String name, int access, java.lang.String version)
      Module.
      void visitModuleEnd()
      Module end.
      abstract void visitMultiANewArrayInsn​(java.lang.String descriptor, int numDimensions)
      Method instruction.
      void visitNestHost​(java.lang.String nestHost)
      Visits the nest host class of the class.
      void visitNestMember​(java.lang.String nestMember)
      Visits a member of the nest.
      void visitOpen​(java.lang.String packaze, int access, java.lang.String... modules)
      Module open.
      abstract void visitOuterClass​(java.lang.String owner, java.lang.String name, java.lang.String descriptor)
      Class outer class.
      void visitPackage​(java.lang.String packaze)
      Module package.
      void visitParameter​(java.lang.String name, int access)
      Method parameter.
      abstract Printer visitParameterAnnotation​(int parameter, java.lang.String descriptor, boolean visible)
      Method parameter annotation.
      void visitPermittedSubclass​(java.lang.String permittedSubclass)
      Visits a permitted subclasses.
      void visitProvide​(java.lang.String service, java.lang.String... providers)
      Module provide.
      Printer visitRecordComponent​(java.lang.String name, java.lang.String descriptor, java.lang.String signature)
      Visits a record component of the class.
      Printer visitRecordComponentAnnotation​(java.lang.String descriptor, boolean visible)
      Visits an annotation of the record component.
      void visitRecordComponentAttribute​(Attribute attribute)
      Visits a non standard attribute of the record component.
      void visitRecordComponentEnd()
      Visits the end of the record component.
      Printer visitRecordComponentTypeAnnotation​(int typeRef, TypePath typePath, java.lang.String descriptor, boolean visible)
      Visits an annotation on a type in the record component signature.
      void visitRequire​(java.lang.String module, int access, java.lang.String version)
      Module require.
      abstract void visitSource​(java.lang.String source, java.lang.String debug)
      Class source.
      abstract void visitTableSwitchInsn​(int min, int max, Label dflt, Label... labels)
      Method instruction.
      Printer visitTryCatchAnnotation​(int typeRef, TypePath typePath, java.lang.String descriptor, boolean visible)
      Try catch block type annotation.
      abstract void visitTryCatchBlock​(Label start, Label end, Label handler, java.lang.String type)
      Method exception handler.
      abstract void visitTypeInsn​(int opcode, java.lang.String type)
      Method instruction.
      void visitUse​(java.lang.String service)
      Module use.
      abstract void visitVarInsn​(int opcode, int var)
      Method instruction.
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Field Detail

      • OPCODES

        public static final java.lang.String[] OPCODES
        The names of the Java Virtual Machine opcodes.
      • HANDLE_TAG

        public static final java.lang.String[] HANDLE_TAG
        The names of the tag field values for Handle.
      • stringBuilder

        protected final java.lang.StringBuilder stringBuilder
        The builder used to build strings in the various visit methods.
      • text

        public final java.util.List<java.lang.Object> text
        The text to be printed. Since the code of methods is not necessarily visited in sequential order, one method after the other, but can be interlaced (some instructions from method one, then some instructions from method two, then some instructions from method one again...), it is not possible to print the visited instructions directly to a sequential stream. A class is therefore printed in a two steps process: a string tree is constructed during the visit, and printed to a sequential stream at the end of the visit. This string tree is stored in this field, as a string list that can contain other string lists, which can themselves contain other string lists, and so on.
    • Method Detail

      • visit

        public abstract void visit​(int version,
                                   int access,
                                   java.lang.String name,
                                   java.lang.String signature,
                                   java.lang.String superName,
                                   java.lang.String[] interfaces)
        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 (see Opcodes). This parameter also indicates if the class is deprecated.
        name - the internal name of the class (see Type.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 (see Type.getInternalName()). For interfaces, the super class is Object. May be null, but only for the Object class.
        interfaces - the internal names of the class's interfaces (see Type.getInternalName()). May be null.
      • visitSource

        public abstract void visitSource​(java.lang.String source,
                                         java.lang.String debug)
        Parameters:
        source - the name of the source file from which the class was compiled. May be null.
        debug - additional debug information to compute the correspondence between source and compiled elements of the class. May be null.
      • visitModule

        public Printer visitModule​(java.lang.String name,
                                   int access,
                                   java.lang.String version)
        Parameters:
        name - the fully qualified name (using dots) of the module.
        access - the module access flags, among ACC_OPEN, ACC_SYNTHETIC and ACC_MANDATED.
        version - the module version, or null.
        Returns:
        the printer.
      • visitNestHost

        public void visitNestHost​(java.lang.String nestHost)
        Visits the nest host class of the class. A nest is a set of classes of the same package that share access to their private members. One of these classes, called the host, lists the other members of the nest, which in turn should link to the host of their nest. This method must be called only once and only if the visited class is a non-host member of a nest. A class is implicitly its own nest, so it's invalid to call this method with the visited class name as argument.
        Parameters:
        nestHost - the internal name of the host class of the nest.
      • visitOuterClass

        public abstract void visitOuterClass​(java.lang.String owner,
                                             java.lang.String name,
                                             java.lang.String descriptor)
        Parameters:
        owner - internal name of the enclosing class of the class.
        name - the name of the method that contains the class, or null if the class is not enclosed in a method of its enclosing class.
        descriptor - the descriptor of the method that contains the class, or null if the class is not enclosed in a method of its enclosing class.
      • visitClassAnnotation

        public abstract Printer visitClassAnnotation​(java.lang.String descriptor,
                                                     boolean visible)
        Parameters:
        descriptor - the class descriptor of the annotation class.
        visible - true if the annotation is visible at runtime.
        Returns:
        the printer.
      • visitNestMember

        public void visitNestMember​(java.lang.String nestMember)
        Visits a member of the nest. A nest is a set of classes of the same package that share access to their private members. One of these classes, called the host, lists the other members of the nest, which in turn should link to the host of their nest. This method must be called only if the visited class is the host of a nest. A nest host is implicitly a member of its own nest, so it's invalid to call this method with the visited class name as argument.
        Parameters:
        nestMember - the internal name of a nest member.
      • visitPermittedSubclass

        public void visitPermittedSubclass​(java.lang.String permittedSubclass)
        Visits a permitted subclasses. A permitted subclass is one of the allowed subclasses of the current class. See ClassVisitor.visitPermittedSubclass(String).
        Parameters:
        permittedSubclass - the internal name of a permitted subclass.
      • visitInnerClass

        public abstract void visitInnerClass​(java.lang.String name,
                                             java.lang.String outerName,
                                             java.lang.String innerName,
                                             int access)
        Parameters:
        name - the internal name of an inner class (see Type.getInternalName()).
        outerName - the internal name of the class to which the inner class belongs (see Type.getInternalName()). May be null for not member classes.
        innerName - the (simple) name of the inner class inside its enclosing class. May be null for anonymous inner classes.
        access - the access flags of the inner class as originally declared in the enclosing class.
      • visitRecordComponent

        public Printer visitRecordComponent​(java.lang.String name,
                                            java.lang.String descriptor,
                                            java.lang.String signature)
        Visits a record component of the class. See ClassVisitor.visitRecordComponent(String, String, String).
        Parameters:
        name - the field's name.
        descriptor - the record component descriptor (see Type).
        signature - the record component signature. May be null if the record component type does not use generic types.
        Returns:
        a visitor to visit this record component annotations and attributes, or null if this class visitor is not interested in visiting these annotations and attributes.
      • visitField

        public abstract Printer visitField​(int access,
                                           java.lang.String name,
                                           java.lang.String descriptor,
                                           java.lang.String signature,
                                           java.lang.Object value)
        Parameters:
        access - the field's access flags (see Opcodes). This parameter also indicates if the field is synthetic and/or deprecated.
        name - the field's name.
        descriptor - the field's descriptor (see Type).
        signature - the field's signature. May be null if the field's type does not use generic types.
        value - the field's initial value. This parameter, which may be null if the field does not have an initial value, must be an Integer, a Float, a Long, a Double or a String (for int, float, long or String fields respectively). This parameter is only used for static fields. Its value is ignored for non static fields, which must be initialized through bytecode instructions in constructors or methods.
        Returns:
        the printer.
      • visitMethod

        public abstract Printer visitMethod​(int access,
                                            java.lang.String name,
                                            java.lang.String descriptor,
                                            java.lang.String signature,
                                            java.lang.String[] exceptions)
        Parameters:
        access - the method's access flags (see Opcodes). This parameter also indicates if the method is synthetic and/or deprecated.
        name - the method's name.
        descriptor - the method's descriptor (see Type).
        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 (see Type.getInternalName()). May be null.
        Returns:
        the printer.
      • visitMainClass

        public void visitMainClass​(java.lang.String mainClass)
        Parameters:
        mainClass - the internal name of the main class of the current module.
      • visitRequire

        public void visitRequire​(java.lang.String module,
                                 int access,
                                 java.lang.String version)
        Parameters:
        module - the fully qualified name (using dots) of the dependence.
        access - the access flag of the dependence among ACC_TRANSITIVE, ACC_STATIC_PHASE, ACC_SYNTHETIC and ACC_MANDATED.
        version - the module version at compile time, or null.
      • visitExport

        public void visitExport​(java.lang.String packaze,
                                int access,
                                java.lang.String... modules)
        Parameters:
        packaze - the internal name of the exported package.
        access - the access flag of the exported package, valid values are among ACC_SYNTHETIC and ACC_MANDATED.
        modules - the fully qualified names (using dots) of the modules that can access the public classes of the exported package, or null.
      • visitOpen

        public void visitOpen​(java.lang.String packaze,
                              int access,
                              java.lang.String... modules)
        Parameters:
        packaze - the internal name of the opened package.
        access - the access flag of the opened package, valid values are among ACC_SYNTHETIC and ACC_MANDATED.
        modules - the fully qualified names (using dots) of the modules that can use deep reflection to the classes of the open package, or null.
      • visitProvide

        public void visitProvide​(java.lang.String service,
                                 java.lang.String... providers)
        Parameters:
        service - the internal name of the service.
        providers - the internal names of the implementations of the service (there is at least one provider).
      • visit

        public abstract void visit​(java.lang.String name,
                                   java.lang.Object value)
        Parameters:
        name - the value name.
        value - the actual value, whose type must be Byte, Boolean, Character, Short, Integer , Long, Float, Double, String or Type of Type.OBJECT or Type.ARRAY sort. This value can also be an array of byte, boolean, short, char, int, long, float or double values (this is equivalent to using visitArray(java.lang.String) and visiting each array element in turn, but is more convenient).
      • visitRecordComponentAnnotation

        public Printer visitRecordComponentAnnotation​(java.lang.String descriptor,
                                                      boolean visible)
        Visits an annotation of the record component. See RecordComponentVisitor.visitAnnotation(java.lang.String, boolean).
        Parameters:
        descriptor - the class descriptor of the annotation class.
        visible - true if the annotation is visible at runtime.
        Returns:
        a visitor to visit the annotation values, or null if this visitor is not interested in visiting this annotation.
      • visitRecordComponentEnd

        public void visitRecordComponentEnd()
        Visits the end of the record component. See RecordComponentVisitor.visitEnd(). This method, which is the last one to be called, is used to inform the visitor that everything have been visited.
      • visitFieldAnnotation

        public abstract Printer visitFieldAnnotation​(java.lang.String descriptor,
                                                     boolean visible)
        Parameters:
        descriptor - the class descriptor of the annotation class.
        visible - true if the annotation is visible at runtime.
        Returns:
        the printer.
      • visitFieldTypeAnnotation

        public Printer visitFieldTypeAnnotation​(int typeRef,
                                                TypePath typePath,
                                                java.lang.String descriptor,
                                                boolean visible)
        Parameters:
        typeRef - a reference to the annotated type. The sort of this type reference must be TypeReference.FIELD. See TypeReference.
        typePath - the path to the annotated type argument, wildcard bound, array element type, or static inner type within 'typeRef'. May be null if the annotation targets 'typeRef' as a whole.
        descriptor - the class descriptor of the annotation class.
        visible - true if the annotation is visible at runtime.
        Returns:
        the printer.
      • visitParameter

        public void visitParameter​(java.lang.String name,
                                   int access)
        Parameters:
        name - parameter name or null if none is provided.
        access - the parameter's access flags, only ACC_FINAL, ACC_SYNTHETIC or/and ACC_MANDATED are allowed (see Opcodes).
      • visitMethodAnnotation

        public abstract Printer visitMethodAnnotation​(java.lang.String descriptor,
                                                      boolean visible)
        Parameters:
        descriptor - the class descriptor of the annotation class.
        visible - true if the annotation is visible at runtime.
        Returns:
        the printer.
      • visitAnnotableParameterCount

        public Printer visitAnnotableParameterCount​(int parameterCount,
                                                    boolean visible)
        Number of method parameters that can have annotations. See MethodVisitor.visitAnnotableParameterCount(int, boolean).
        Parameters:
        parameterCount - the number of method parameters than can have annotations. This number must be less or equal than the number of parameter types in the method descriptor. It can be strictly less when a method has synthetic parameters and when these parameters are ignored when computing parameter indices for the purpose of parameter annotations (see https://docs.oracle.com/javase/specs/jvms/se9/html/jvms-4.html#jvms-4.7.18).
        visible - true to define the number of method parameters that can have annotations visible at runtime, false to define the number of method parameters that can have annotations invisible at runtime.
        Returns:
        the printer.
      • visitParameterAnnotation

        public abstract Printer visitParameterAnnotation​(int parameter,
                                                         java.lang.String descriptor,
                                                         boolean visible)
        Parameters:
        parameter - the parameter index. This index must be strictly smaller than the number of parameters in the method descriptor, and strictly smaller than the parameter count specified in visitAnnotableParameterCount(int, boolean). Important note: a parameter index i is not required to correspond to the i'th parameter descriptor in the method descriptor, in particular in case of synthetic parameters (see https://docs.oracle.com/javase/specs/jvms/se9/html/jvms-4.html#jvms-4.7.18).
        descriptor - the class descriptor of the annotation class.
        visible - true if the annotation is visible at runtime.
        Returns:
        the printer.
      • visitInsn

        public abstract void visitInsn​(int opcode)
        Method instruction. See MethodVisitor.visitInsn(int)
        Parameters:
        opcode - the opcode of the instruction to be visited. This opcode is either NOP, ACONST_NULL, ICONST_M1, ICONST_0, ICONST_1, ICONST_2, ICONST_3, ICONST_4, ICONST_5, LCONST_0, LCONST_1, FCONST_0, FCONST_1, FCONST_2, DCONST_0, DCONST_1, IALOAD, LALOAD, FALOAD, DALOAD, AALOAD, BALOAD, CALOAD, SALOAD, IASTORE, LASTORE, FASTORE, DASTORE, AASTORE, BASTORE, CASTORE, SASTORE, POP, POP2, DUP, DUP_X1, DUP_X2, DUP2, DUP2_X1, DUP2_X2, SWAP, IADD, LADD, FADD, DADD, ISUB, LSUB, FSUB, DSUB, IMUL, LMUL, FMUL, DMUL, IDIV, LDIV, FDIV, DDIV, IREM, LREM, FREM, DREM, INEG, LNEG, FNEG, DNEG, ISHL, LSHL, ISHR, LSHR, IUSHR, LUSHR, IAND, LAND, IOR, LOR, IXOR, LXOR, I2L, I2F, I2D, L2I, L2F, L2D, F2I, F2L, F2D, D2I, D2L, D2F, I2B, I2C, I2S, LCMP, FCMPL, FCMPG, DCMPL, DCMPG, IRETURN, LRETURN, FRETURN, DRETURN, ARETURN, RETURN, ARRAYLENGTH, ATHROW, MONITORENTER, or MONITOREXIT.
      • visitVarInsn

        public abstract void visitVarInsn​(int opcode,
                                          int var)
        Method instruction. See MethodVisitor.visitVarInsn(int, int).
        Parameters:
        opcode - the opcode of the local variable instruction to be visited. This opcode is either ILOAD, LLOAD, FLOAD, DLOAD, ALOAD, ISTORE, LSTORE, FSTORE, DSTORE, ASTORE or RET.
        var - the operand of the instruction to be visited. This operand is the index of a local variable.
      • visitTypeInsn

        public abstract void visitTypeInsn​(int opcode,
                                           java.lang.String type)
        Parameters:
        opcode - the opcode of the type instruction to be visited. This opcode is either NEW, ANEWARRAY, CHECKCAST or INSTANCEOF.
        type - the operand of the instruction to be visited. This operand must be the internal name of an object or array class (see Type.getInternalName()).
      • visitMethodInsn

        public void visitMethodInsn​(int opcode,
                                    java.lang.String owner,
                                    java.lang.String name,
                                    java.lang.String descriptor,
                                    boolean isInterface)
        Parameters:
        opcode - the opcode of the type instruction to be visited. This opcode is either INVOKEVIRTUAL, INVOKESPECIAL, INVOKESTATIC or INVOKEINTERFACE.
        owner - the internal name of the method's owner class (see Type.getInternalName()).
        name - the method's name.
        descriptor - the method's descriptor (see Type).
        isInterface - if the method's owner class is an interface.
      • visitInvokeDynamicInsn

        public abstract void visitInvokeDynamicInsn​(java.lang.String name,
                                                    java.lang.String descriptor,
                                                    Handle bootstrapMethodHandle,
                                                    java.lang.Object... bootstrapMethodArguments)
        Parameters:
        name - the method's name.
        descriptor - the method's descriptor (see Type).
        bootstrapMethodHandle - the bootstrap method.
        bootstrapMethodArguments - the bootstrap method constant arguments. Each argument must be an Integer, Float, Long, Double, String, Type or Handle value. This method is allowed to modify the content of the array so a caller should expect that this array may change.
      • visitJumpInsn

        public abstract void visitJumpInsn​(int opcode,
                                           Label label)
        Parameters:
        opcode - the opcode of the type instruction to be visited. This opcode is either IFEQ, IFNE, IFLT, IFGE, IFGT, IFLE, IF_ICMPEQ, IF_ICMPNE, IF_ICMPLT, IF_ICMPGE, IF_ICMPGT, IF_ICMPLE, IF_ACMPEQ, IF_ACMPNE, GOTO, JSR, IFNULL or IFNONNULL.
        label - the operand of the instruction to be visited. This operand is a label that designates the instruction to which the jump instruction may jump.
      • visitLdcInsn

        public abstract void visitLdcInsn​(java.lang.Object value)
        Parameters:
        value - the constant to be loaded on the stack. This parameter must be a non null Integer, a Float, a Long, a Double, a String, a Type of OBJECT or ARRAY sort for .class constants, for classes whose version is 49, a Type of METHOD sort for MethodType, a Handle for MethodHandle constants, for classes whose version is 51 or a ConstantDynamic for a constant dynamic for classes whose version is 55.
      • visitIincInsn

        public abstract void visitIincInsn​(int var,
                                           int increment)
        Method instruction. See MethodVisitor.visitIincInsn(int, int).
        Parameters:
        var - index of the local variable to be incremented.
        increment - amount to increment the local variable by.
      • visitMultiANewArrayInsn

        public abstract void visitMultiANewArrayInsn​(java.lang.String descriptor,
                                                     int numDimensions)
        Parameters:
        descriptor - an array type descriptor (see Type).
        numDimensions - the number of dimensions of the array to allocate.
      • visitLocalVariable

        public abstract void visitLocalVariable​(java.lang.String name,
                                                java.lang.String descriptor,
                                                java.lang.String signature,
                                                Label start,
                                                Label end,
                                                int index)
        Parameters:
        name - the name of a local variable.
        descriptor - the type descriptor of this local variable.
        signature - the type signature of this local variable. May be null if the local variable type does not use generic types.
        start - the first instruction corresponding to the scope of this local variable (inclusive).
        end - the last instruction corresponding to the scope of this local variable (exclusive).
        index - the local variable's index.
      • visitLocalVariableAnnotation

        public Printer visitLocalVariableAnnotation​(int typeRef,
                                                    TypePath typePath,
                                                    Label[] start,
                                                    Label[] end,
                                                    int[] index,
                                                    java.lang.String descriptor,
                                                    boolean visible)
        Parameters:
        typeRef - a reference to the annotated type. The sort of this type reference must be TypeReference.LOCAL_VARIABLE or TypeReference.RESOURCE_VARIABLE. See TypeReference.
        typePath - the path to the annotated type argument, wildcard bound, array element type, or static inner type within 'typeRef'. May be null if the annotation targets 'typeRef' as a whole.
        start - the fist instructions corresponding to the continuous ranges that make the scope of this local variable (inclusive).
        end - the last instructions corresponding to the continuous ranges that make the scope of this local variable (exclusive). This array must have the same size as the 'start' array.
        index - the local variable's index in each range. This array must have the same size as the 'start' array.
        descriptor - the class descriptor of the annotation class.
        visible - true if the annotation is visible at runtime.
        Returns:
        the printer.
      • visitLineNumber

        public abstract void visitLineNumber​(int line,
                                             Label start)
        Parameters:
        line - a line number. This number refers to the source file from which the class was compiled.
        start - the first instruction corresponding to this line number.
      • visitMaxs

        public abstract void visitMaxs​(int maxStack,
                                       int maxLocals)
        Method max stack and max locals. See MethodVisitor.visitMaxs(int, int).
        Parameters:
        maxStack - maximum stack size of the method.
        maxLocals - maximum number of local variables for the method.
      • getText

        public java.util.List<java.lang.Object> getText()
        Returns the text constructed by this visitor.
        Returns:
        the text constructed by this visitor. See text.
      • print

        public void print​(java.io.PrintWriter printWriter)
        Prints the text constructed by this visitor.
        Parameters:
        printWriter - the print writer to be used.
      • appendString

        public static void appendString​(java.lang.StringBuilder stringBuilder,
                                        java.lang.String string)
        Appends a quoted string to the given string builder.
        Parameters:
        stringBuilder - the buffer where the string must be added.
        string - the string to be added.