程序包 cn.taketoday.core

类 BridgeMethodResolver

java.lang.Object
cn.taketoday.core.BridgeMethodResolver
public abstract class BridgeMethodResolver extends Object
Helper for resolving synthetic bridge Methods to the Method being bridged.

Given a synthetic bridge Method returns the Method being bridged. A bridge method may be created by the compiler when extending a parameterized type whose methods have parameterized arguments. During runtime invocation the bridge Method may be invoked and/or used via reflection. When attempting to locate annotations on Methods, it is wise to check for bridge Methods as appropriate and find the bridged Method.

See The Java Language Specification for more details on the use of bridge methods.

从以下版本开始:
4.0 2021/9/6 21:51
作者:
Rob Harrop, Juergen Hoeller, Phillip Webb, Harry Yang

  • 字段详细资料

  • 构造器详细资料

    • BridgeMethodResolver

      private BridgeMethodResolver()

  • 方法详细资料

    • findBridgedMethod

      public static Method findBridgedMethod(Method bridgeMethod)
      Find the local original method for the supplied bridge Method.

      It is safe to call this method passing in a non-bridge Method instance. In such a case, the supplied Method instance is returned directly to the caller. Callers are not required to check for bridging before calling this method.

      参数:
      bridgeMethod - the method to introspect against its declaring class
      返回:
      the original method (either the bridged method or the passed-in method if no more specific one could be found)
      另请参阅:

    • getMostSpecificMethod

      public static Method getMostSpecificMethod(Method bridgeMethod, @Nullable Class<?> targetClass)
      Determine the most specific method for the supplied bridge Method in the given class hierarchy, even if not available on the local declaring class.

      This is effectively a combination of ReflectionUtils.getMostSpecificMethod(java.lang.reflect.Method, java.lang.Class<?>) and findBridgedMethod(java.lang.reflect.Method), resolving the original method even if no bridge method has been generated at the same class hierarchy level (a known difference between the Eclipse compiler and regular javac).

      参数:
      bridgeMethod - the method to introspect against the given target class
      targetClass - the target class to find methods on
      返回:
      the original method (either the bridged method or the passed-in method if no more specific one could be found)
      另请参阅:

    • resolveBridgeMethod

      private static Method resolveBridgeMethod(Method bridgeMethod, Class<?> targetClass)

    • isBridgedCandidateFor

      private static boolean isBridgedCandidateFor(Method candidateMethod, Method bridgeMethod)
      Returns true if the supplied 'candidateMethod' can be considered a valid candidate for the Method that is bridged by the supplied bridge Method. This method performs inexpensive checks and can be used to quickly filter for a set of possible matches.

    • searchCandidates

      @Nullable private static Method searchCandidates(ArrayList<Method> candidateMethods, Method bridgeMethod)
      Searches for the bridged method in the given candidates.
      参数:
      candidateMethods - the List of candidate Methods
      bridgeMethod - the bridge method
      返回:
      the bridged method, or null if none found

    • isBridgeMethodFor

      static boolean isBridgeMethodFor(Method bridgeMethod, Method candidateMethod, Class<?> declaringClass)
      Determines whether the bridge Method is the bridge for the supplied candidate Method.

    • isResolvedTypeMatch

      private static boolean isResolvedTypeMatch(Method genericMethod, Method candidateMethod, Class<?> declaringClass)
      Returns true if the Type signature of both the supplied generic Method and concrete Method are equal after resolving all types against the declaringType, otherwise returns false.

    • findGenericDeclaration

      @Nullable private static Method findGenericDeclaration(Method bridgeMethod)
      Searches for the generic Method declaration whose erased signature matches that of the supplied bridge method.
      抛出:
      IllegalStateException - if the generic declaration cannot be found

    • searchInterfaces

      @Nullable private static Method searchInterfaces(Class<?>[] interfaces, Method bridgeMethod)

    • searchForMatch

      @Nullable private static Method searchForMatch(Class<?> type, Method bridgeMethod)
      If the supplied Class has a declared Method whose signature matches that of the supplied Method, then this matching Method is returned, otherwise null is returned.

    • isVisibilityBridgeMethodPair

      public static boolean isVisibilityBridgeMethodPair(Method bridgeMethod, Method bridgedMethod)
      Compare the signatures of the bridge method and the method which it bridges. If the parameter and return types are the same, it is a 'visibility' bridge method introduced in Java 6 to fix https://bugs.openjdk.org/browse/JDK-6342411. See also https://stas-blogspot.blogspot.com/2010/03/java-bridge-methods-explained.html
      返回:
      whether signatures match as described