Package org.objectweb.asm

Class TypeReference

java.lang.Object
org.objectweb.asm.TypeReference
public class TypeReference extends Object
A reference to a type appearing in a class, field or method declaration, or on an instruction. Such a reference designates the part of the class where the referenced type is appearing (e.g. an 'extends', 'implements' or 'throws' clause, a 'new' instruction, a 'catch' clause, a type cast, a local variable declaration, etc).

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final int
    CAST
    The sort of type references that target the type declared in an explicit or implicit cast instruction.
    static final int
    CLASS_EXTENDS
    The sort of type references that target the super class of a class or one of the interfaces it implements.
    static final int
    CLASS_TYPE_PARAMETER
    The sort of type references that target a type parameter of a generic class.
    static final int
    CLASS_TYPE_PARAMETER_BOUND
    The sort of type references that target a bound of a type parameter of a generic class.
    static final int
    CONSTRUCTOR_INVOCATION_TYPE_ARGUMENT
    The sort of type references that target a type parameter of a generic constructor in a constructor call.
    static final int
    CONSTRUCTOR_REFERENCE
    The sort of type references that target the receiver type of a constructor reference.
    static final int
    CONSTRUCTOR_REFERENCE_TYPE_ARGUMENT
    The sort of type references that target a type parameter of a generic constructor in a constructor reference.
    static final int
    EXCEPTION_PARAMETER
    The sort of type references that target the type of the exception of a 'catch' clause in a method.
    static final int
    FIELD
    The sort of type references that target the type of a field.
    static final int
    INSTANCEOF
    The sort of type references that target the type declared in an 'instanceof' instruction.
    static final int
    LOCAL_VARIABLE
    The sort of type references that target the type of a local variable in a method.
    static final int
    METHOD_FORMAL_PARAMETER
    The sort of type references that target the type of a formal parameter of a method.
    static final int
    METHOD_INVOCATION_TYPE_ARGUMENT
    The sort of type references that target a type parameter of a generic method in a method call.
    static final int
    METHOD_RECEIVER
    The sort of type references that target the receiver type of a method.
    static final int
    METHOD_REFERENCE
    The sort of type references that target the receiver type of a method reference.
    static final int
    METHOD_REFERENCE_TYPE_ARGUMENT
    The sort of type references that target a type parameter of a generic method in a method reference.
    static final int
    METHOD_RETURN
    The sort of type references that target the return type of a method.
    static final int
    METHOD_TYPE_PARAMETER
    The sort of type references that target a type parameter of a generic method.
    static final int
    METHOD_TYPE_PARAMETER_BOUND
    The sort of type references that target a bound of a type parameter of a generic method.
    static final int
    NEW
    The sort of type references that target the type of the object created by a 'new' instruction.
    static final int
    RESOURCE_VARIABLE
    The sort of type references that target the type of a resource variable in a method.
    static final int
    THROWS
    The sort of type references that target the type of an exception declared in the throws clause of a method.

  • Constructor Summary

    Constructors
    Constructor
    Description
    TypeReference(int typeRef)
    Constructs a new TypeReference.

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    getExceptionIndex()
    Returns the index of the exception, in a 'throws' clause of a method, whose type is referenced by this type reference.
    int
    getFormalParameterIndex()
    Returns the index of the formal parameter whose type is referenced by this type reference.
    int
    getSort()
    Returns the sort of this type reference.
    int
    getSuperTypeIndex()
    Returns the index of the "super type" of a class that is referenced by this type reference.
    int
    getTryCatchBlockIndex()
    Returns the index of the try catch block (using the order in which they are visited with visitTryCatchBlock), whose 'catch' type is referenced by this type reference.
    int
    getTypeArgumentIndex()
    Returns the index of the type argument referenced by this type reference.
    int
    getTypeParameterBoundIndex()
    Returns the index of the type parameter bound, within the type parameter getTypeParameterIndex(), referenced by this type reference.
    int
    getTypeParameterIndex()
    Returns the index of the type parameter referenced by this type reference.
    int
    getValue()
    Returns the int encoded value of this type reference, suitable for use in visit methods related to type annotations, like visitTypeAnnotation.
    static TypeReference
    newExceptionReference(int exceptionIndex)
    Returns a reference to the type of an exception, in a 'throws' clause of a method.
    static TypeReference
    newFormalParameterReference(int paramIndex)
    Returns a reference to the type of a formal parameter of a method.
    static TypeReference
    newSuperTypeReference(int itfIndex)
    Returns a reference to the super class or to an interface of the 'implements' clause of a class.
    static TypeReference
    newTryCatchReference(int tryCatchBlockIndex)
    Returns a reference to the type of the exception declared in a 'catch' clause of a method.
    static TypeReference
    newTypeArgumentReference(int sort, int argIndex)
    Returns a reference to the type of a type argument in a constructor or method call or reference.
    static TypeReference
    newTypeParameterBoundReference(int sort, int paramIndex, int boundIndex)
    Returns a reference to a type parameter bound of a generic class or method.
    static TypeReference
    newTypeParameterReference(int sort, int paramIndex)
    Returns a reference to a type parameter of a generic class or method.
    static TypeReference
    newTypeReference(int sort)
    Returns a type reference of the given sort.

    Methods inherited from class java.lang.Object

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

  • Field Details

    • CLASS_TYPE_PARAMETER

      public static final int CLASS_TYPE_PARAMETER
      The sort of type references that target a type parameter of a generic class. See getSort().
      See Also:

    • METHOD_TYPE_PARAMETER

      public static final int METHOD_TYPE_PARAMETER
      The sort of type references that target a type parameter of a generic method. See getSort().
      See Also:

    • CLASS_EXTENDS

      public static final int CLASS_EXTENDS
      The sort of type references that target the super class of a class or one of the interfaces it implements. See getSort().
      See Also:

    • CLASS_TYPE_PARAMETER_BOUND

      public static final int CLASS_TYPE_PARAMETER_BOUND
      The sort of type references that target a bound of a type parameter of a generic class. See getSort().
      See Also:

    • METHOD_TYPE_PARAMETER_BOUND

      public static final int METHOD_TYPE_PARAMETER_BOUND
      The sort of type references that target a bound of a type parameter of a generic method. See getSort().
      See Also:

    • FIELD

      public static final int FIELD
      The sort of type references that target the type of a field. See getSort().
      See Also:

    • METHOD_RETURN

      public static final int METHOD_RETURN
      The sort of type references that target the return type of a method. See getSort().
      See Also:

    • METHOD_RECEIVER

      public static final int METHOD_RECEIVER
      The sort of type references that target the receiver type of a method. See getSort().
      See Also:

    • METHOD_FORMAL_PARAMETER

      public static final int METHOD_FORMAL_PARAMETER
      The sort of type references that target the type of a formal parameter of a method. See getSort().
      See Also:

    • THROWS

      public static final int THROWS
      The sort of type references that target the type of an exception declared in the throws clause of a method. See getSort().
      See Also:

    • LOCAL_VARIABLE

      public static final int LOCAL_VARIABLE
      The sort of type references that target the type of a local variable in a method. See getSort().
      See Also:

    • RESOURCE_VARIABLE

      public static final int RESOURCE_VARIABLE
      The sort of type references that target the type of a resource variable in a method. See getSort().
      See Also:

    • EXCEPTION_PARAMETER

      public static final int EXCEPTION_PARAMETER
      The sort of type references that target the type of the exception of a 'catch' clause in a method. See getSort().
      See Also:

    • INSTANCEOF

      public static final int INSTANCEOF
      The sort of type references that target the type declared in an 'instanceof' instruction. See getSort().
      See Also:

    • NEW

      public static final int NEW
      The sort of type references that target the type of the object created by a 'new' instruction. See getSort().
      See Also:

    • CONSTRUCTOR_REFERENCE

      public static final int CONSTRUCTOR_REFERENCE
      The sort of type references that target the receiver type of a constructor reference. See getSort().
      See Also:

    • METHOD_REFERENCE

      public static final int METHOD_REFERENCE
      The sort of type references that target the receiver type of a method reference. See getSort().
      See Also:

    • CAST

      public static final int CAST
      The sort of type references that target the type declared in an explicit or implicit cast instruction. See getSort().
      See Also:

    • CONSTRUCTOR_INVOCATION_TYPE_ARGUMENT

      public static final int CONSTRUCTOR_INVOCATION_TYPE_ARGUMENT
      The sort of type references that target a type parameter of a generic constructor in a constructor call. See getSort().
      See Also:

    • METHOD_INVOCATION_TYPE_ARGUMENT

      public static final int METHOD_INVOCATION_TYPE_ARGUMENT
      The sort of type references that target a type parameter of a generic method in a method call. See getSort().
      See Also:

    • CONSTRUCTOR_REFERENCE_TYPE_ARGUMENT

      public static final int CONSTRUCTOR_REFERENCE_TYPE_ARGUMENT
      The sort of type references that target a type parameter of a generic constructor in a constructor reference. See getSort().
      See Also:

    • METHOD_REFERENCE_TYPE_ARGUMENT

      public static final int METHOD_REFERENCE_TYPE_ARGUMENT
      The sort of type references that target a type parameter of a generic method in a method reference. See getSort().
      See Also:

  • Constructor Details

  • Method Details

    • newTypeReference

      public static TypeReference newTypeReference(int sort)
      Returns a type reference of the given sort.
      Parameters:
      sort - one of FIELD, METHOD_RETURN, METHOD_RECEIVER, LOCAL_VARIABLE, RESOURCE_VARIABLE, INSTANCEOF, NEW, CONSTRUCTOR_REFERENCE, or METHOD_REFERENCE.
      Returns:
      a type reference of the given sort.

    • newTypeParameterReference

      public static TypeReference newTypeParameterReference(int sort, int paramIndex)
      Returns a reference to a type parameter of a generic class or method.
      Parameters:
      sort - one of CLASS_TYPE_PARAMETER or METHOD_TYPE_PARAMETER.
      paramIndex - the type parameter index.
      Returns:
      a reference to the given generic class or method type parameter.

    • newTypeParameterBoundReference

      public static TypeReference newTypeParameterBoundReference(int sort, int paramIndex, int boundIndex)
      Returns a reference to a type parameter bound of a generic class or method.
      Parameters:
      sort - one of CLASS_TYPE_PARAMETER or METHOD_TYPE_PARAMETER.
      paramIndex - the type parameter index.
      boundIndex - the type bound index within the above type parameters.
      Returns:
      a reference to the given generic class or method type parameter bound.

    • newSuperTypeReference

      public static TypeReference newSuperTypeReference(int itfIndex)
      Returns a reference to the super class or to an interface of the 'implements' clause of a class.
      Parameters:
      itfIndex - the index of an interface in the 'implements' clause of a class, or -1 to reference the super class of the class.
      Returns:
      a reference to the given super type of a class.

    • newFormalParameterReference

      public static TypeReference newFormalParameterReference(int paramIndex)
      Returns a reference to the type of a formal parameter of a method.
      Parameters:
      paramIndex - the formal parameter index.
      Returns:
      a reference to the type of the given method formal parameter.

    • newExceptionReference

      public static TypeReference newExceptionReference(int exceptionIndex)
      Returns a reference to the type of an exception, in a 'throws' clause of a method.
      Parameters:
      exceptionIndex - the index of an exception in a 'throws' clause of a method.
      Returns:
      a reference to the type of the given exception.

    • newTryCatchReference

      public static TypeReference newTryCatchReference(int tryCatchBlockIndex)
      Returns a reference to the type of the exception declared in a 'catch' clause of a method.
      Parameters:
      tryCatchBlockIndex - the index of a try catch block (using the order in which they are visited with visitTryCatchBlock).
      Returns:
      a reference to the type of the given exception.

    • newTypeArgumentReference

      public static TypeReference newTypeArgumentReference(int sort, int argIndex)
      Returns a reference to the type of a type argument in a constructor or method call or reference.
      Parameters:
      sort - one of CAST, CONSTRUCTOR_INVOCATION_TYPE_ARGUMENT, METHOD_INVOCATION_TYPE_ARGUMENT, CONSTRUCTOR_REFERENCE_TYPE_ARGUMENT, or METHOD_REFERENCE_TYPE_ARGUMENT.
      argIndex - the type argument index.
      Returns:
      a reference to the type of the given type argument.

    • getSort

      public int getSort()
      Returns the sort of this type reference.
      Returns:
      one of CLASS_TYPE_PARAMETER, METHOD_TYPE_PARAMETER, CLASS_EXTENDS, CLASS_TYPE_PARAMETER_BOUND, METHOD_TYPE_PARAMETER_BOUND, FIELD, METHOD_RETURN, METHOD_RECEIVER, METHOD_FORMAL_PARAMETER, THROWS, LOCAL_VARIABLE, RESOURCE_VARIABLE, EXCEPTION_PARAMETER, INSTANCEOF, NEW, CONSTRUCTOR_REFERENCE, METHOD_REFERENCE, CAST, CONSTRUCTOR_INVOCATION_TYPE_ARGUMENT, METHOD_INVOCATION_TYPE_ARGUMENT, CONSTRUCTOR_REFERENCE_TYPE_ARGUMENT, or METHOD_REFERENCE_TYPE_ARGUMENT.

    • getTypeParameterIndex

      public int getTypeParameterIndex()
      Returns the index of the type parameter referenced by this type reference. This method must only be used for type references whose sort is CLASS_TYPE_PARAMETER, METHOD_TYPE_PARAMETER, CLASS_TYPE_PARAMETER_BOUND or METHOD_TYPE_PARAMETER_BOUND.
      Returns:
      a type parameter index.

    • getTypeParameterBoundIndex

      public int getTypeParameterBoundIndex()
      Returns the index of the type parameter bound, within the type parameter getTypeParameterIndex(), referenced by this type reference. This method must only be used for type references whose sort is CLASS_TYPE_PARAMETER_BOUND or METHOD_TYPE_PARAMETER_BOUND.
      Returns:
      a type parameter bound index.

    • getSuperTypeIndex

      public int getSuperTypeIndex()
      Returns the index of the "super type" of a class that is referenced by this type reference. This method must only be used for type references whose sort is CLASS_EXTENDS.
      Returns:
      the index of an interface in the 'implements' clause of a class, or -1 if this type reference references the type of the super class.

    • getFormalParameterIndex

      public int getFormalParameterIndex()
      Returns the index of the formal parameter whose type is referenced by this type reference. This method must only be used for type references whose sort is METHOD_FORMAL_PARAMETER.
      Returns:
      a formal parameter index.

    • getExceptionIndex

      public int getExceptionIndex()
      Returns the index of the exception, in a 'throws' clause of a method, whose type is referenced by this type reference. This method must only be used for type references whose sort is THROWS.
      Returns:
      the index of an exception in the 'throws' clause of a method.

    • getTryCatchBlockIndex

      public int getTryCatchBlockIndex()
      Returns the index of the try catch block (using the order in which they are visited with visitTryCatchBlock), whose 'catch' type is referenced by this type reference. This method must only be used for type references whose sort is EXCEPTION_PARAMETER .
      Returns:
      the index of an exception in the 'throws' clause of a method.

    • getTypeArgumentIndex

      public int getTypeArgumentIndex()
      Returns the index of the type argument referenced by this type reference. This method must only be used for type references whose sort is CAST, CONSTRUCTOR_INVOCATION_TYPE_ARGUMENT, METHOD_INVOCATION_TYPE_ARGUMENT, CONSTRUCTOR_REFERENCE_TYPE_ARGUMENT, or METHOD_REFERENCE_TYPE_ARGUMENT.
      Returns:
      a type parameter index.

    • getValue

      public int getValue()
      Returns the int encoded value of this type reference, suitable for use in visit methods related to type annotations, like visitTypeAnnotation.
      Returns:
      the int encoded value of this type reference.