Package org.codehaus.groovy.vmplugin

## Interface VMPlugin

- All Known Implementing Classes:
    `Java5`, `Java6`, `Java7`, `Java8`, `Java9`

      public interface VMPlugin

  Interface to access VM version based actions. This interface is for internal use only!

- - ### Method Summary

    All Methods Instance Methods Abstract Methods Default Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `boolean` | `checkAccessible​(Class<?> callerClass, Class<?> declaringClass, int memberModifiers, boolean allowIllegalAccess)` | check whether the member can be accessed or not
    `boolean` | `checkCanSetAccessible​(AccessibleObject accessibleObject, Class<?> callerClass)` | Check whether invoking `AccessibleObject.setAccessible(boolean)` on the accessible object will be completed successfully
    `void` | `configureAnnotation​(AnnotationNode an)` |
    `void` | `configureAnnotationNodeFromDefinition​(AnnotationNode definition, AnnotationNode root)` |
    `void` | `configureClassNode​(CompileUnit compileUnit, ClassNode classNode)` |
    `default Map<String,​Set<String>>` | `getDefaultImportClasses​(String[] packageNames)` | Returns the default import classes: class name -> the relevant package names
    `Object` | `getInvokeSpecialHandle​(Method m, Object receiver)` | Returns a handle with bound receiver to invokeSpecial the given method.
    `Class[]` | `getPluginDefaultGroovyMethods()` |
    `Class[]` | `getPluginStaticGroovyMethods()` |
    `int` | `getVersion()` | Gives the version the plugin is made for
    `void` | `invalidateCallSites()` |
    `Object` | `invokeHandle​(Object handle, Object[] args)` | Invokes a handle produced by #getInvokeSpecialdHandle
    `void` | `setAdditionalClassInformation​(ClassNode c)` |
    `MetaMethod` | `transformMetaMethod​(MetaClass metaClass, MetaMethod metaMethod)` | transform meta method.
    `MetaMethod` | `transformMetaMethod​(MetaClass metaClass, MetaMethod metaMethod, Class<?> caller)` | transform meta method
    `boolean` | `trySetAccessible​(AccessibleObject ao)` | Set the `accessible` flag for this reflected object to `true` if possible.

- - ### Method Detail

    - #### setAdditionalClassInformation

          void setAdditionalClassInformation​(ClassNode c)

    - #### getPluginDefaultGroovyMethods

          Class[] getPluginDefaultGroovyMethods()

    - #### getPluginStaticGroovyMethods

          Class[] getPluginStaticGroovyMethods()

    - #### configureAnnotationNodeFromDefinition

          void configureAnnotationNodeFromDefinition​(AnnotationNode definition,
                                                     AnnotationNode root)

    - #### configureAnnotation

          void configureAnnotation​(AnnotationNode an)

    - #### configureClassNode

          void configureClassNode​(CompileUnit compileUnit,
                                  ClassNode classNode)

    - #### invalidateCallSites

          void invalidateCallSites()

    - #### getInvokeSpecialHandle

          Object getInvokeSpecialHandle​(Method m,
                                        Object receiver)

      Returns a handle with bound receiver to invokeSpecial the given method. This method will require at least Java 7, but since the source has to compile on older Java versions as well it is not marked to return a MethodHandle and uses Object instead
      Returns:
        null in case of jdk<7, otherwise a handle that takes the method call arguments for the invokespecial call

    - #### invokeHandle

          Object invokeHandle​(Object handle,
                              Object[] args)
                       throws Throwable

      Invokes a handle produced by #getInvokeSpecialdHandle
      Parameters:
        `handle` - the handle
        `args` - arguments for the method call, can be empty but not null
      Returns:
        the result of the method call
      Throws:
        `Throwable`

    - #### getVersion

          int getVersion()

      Gives the version the plugin is made for
      Returns:
        7 for jdk7, 8 for jdk8, 9 for jdk9 or higher

    - #### checkCanSetAccessible

          boolean checkCanSetAccessible​(AccessibleObject accessibleObject,
                                        Class<?> callerClass)

      Check whether invoking `AccessibleObject.setAccessible(boolean)` on the accessible object will be completed successfully
      Parameters:
        `accessibleObject` - the accessible object to check
        `callerClass` - the callerClass to invoke `setAccessible`
      Returns:
        the check result

    - #### checkAccessible

          boolean checkAccessible​(Class<?> callerClass,
                                  Class<?> declaringClass,
                                  int memberModifiers,
                                  boolean allowIllegalAccess)

      check whether the member can be accessed or not
      Parameters:
        `callerClass` - callerClass the callerClass to invoke `setAccessible`
        `declaringClass` - the type of member owner
        `memberModifiers` - modifiers of member
        `allowIllegalAccess` - whether to allow illegal access
      Returns:
        the result of checking

    - #### trySetAccessible

          boolean trySetAccessible​(AccessibleObject ao)

      Set the `accessible` flag for this reflected object to `true` if possible.
      Parameters:
        `ao` - the accessible object
      Returns:
        `true` if the `accessible` flag is set to `true`; `false` if access cannot be enabled.
      Throws:
        `SecurityException` - if the request is denied by the security manager

    - #### transformMetaMethod

          MetaMethod transformMetaMethod​(MetaClass metaClass,
                                         MetaMethod metaMethod,
                                         Class<?> caller)

      transform meta method
      Parameters:
        `metaClass` - meta class
        `metaMethod` - the original meta method
        `caller` - caller class, whose method sets accessible for methods
      Returns:
        the transformed meta method

    - #### transformMetaMethod

          MetaMethod transformMetaMethod​(MetaClass metaClass,
                                         MetaMethod metaMethod)

      transform meta method.
      Parameters:
        `metaClass` - meta class
        `metaMethod` - the original meta method
      Returns:
        the transformed meta method

    - #### getDefaultImportClasses

          default Map<String,​Set<String>> getDefaultImportClasses​(String[] packageNames)

      Returns the default import classes: class name -> the relevant package names
      Parameters:
        `packageNames` - the default import package names, e.g. java.lang.
      Returns:
        the default import classes
      Since:
        3.0.2