mockit.asm.jvmConstants.Access Maven / Gradle / Ivy

package mockit.asm.jvmConstants;

import static mockit.asm.jvmConstants.ClassVersion.*;

/**
 * Defines the JVM and ASM-specific access flags for classes, fields, methods, and method parameters.
 */
public final class Access
{
   // Constants for standard JVM access flags.
   public static final int PUBLIC      = 0x0001; // class, field, method
   @SuppressWarnings("unused")
   public static final int PRIVATE     = 0x0002; // class, field, method
   public static final int PROTECTED   = 0x0004; // class, field, method
   public static final int STATIC      = 0x0008; // field, method
   public static final int FINAL       = 0x0010; // class, field, method, parameter
   public static final int SUPER       = 0x0020; // class (also, a SYNCHRONIZED method)
   public static final int BRIDGE      = 0x0040; // method (also, a VOLATILE field)
   public static final int VARARGS     = 0x0080; // method (also, a TRANSIENT field)
   public static final int NATIVE      = 0x0100; // method
   public static final int INTERFACE   = 0x0200; // class
   public static final int ABSTRACT    = 0x0400; // class, method
   public static final int SYNTHETIC   = 0x1000; // class, field, method, parameter
   public static final int ANNOTATION  = 0x2000; // class
   public static final int ENUM        = 0x4000; // class(?) field inner

   // Constants for pseudo access flags.
   private static final int DEPRECATED = 0x20000; // class, field, method
   public static final int CONSTRUCTOR = 0x80000; // method

   // Other constants /////////////////////////////////////////////////////////////////////////////////////////////////

   /**
    * To distinguish between the synthetic attribute and the synthetic access flag.
    */
   private static final int SYNTHETIC_ATTRIBUTE = 0x40000; // class, field, method

   /**
    * Factor to convert from SYNTHETIC_ATTRIBUTE to SYNTHETIC.
    */
   private static final int TO_SYNTHETIC = SYNTHETIC_ATTRIBUTE / SYNTHETIC;

   // Helper methods //////////////////////////////////////////////////////////////////////////////////////////////////

   private Access() {}

   public static boolean isDeprecated(int access) { return (access & DEPRECATED) != 0; }
   public static boolean isSynthetic(int access)  { return (access & SYNTHETIC) != 0; }

   public static boolean isSynthetic(int access, int classVersion) {
      return isSynthetic(access) && ((access & SYNTHETIC_ATTRIBUTE) != 0 || classVersion < V1_5);
   }

   public static boolean isConstructor(int access) { return (access & CONSTRUCTOR) != 0; }

   public static int computeFlag(int access, int baseMask) {
      int mask = baseMask | DEPRECATED | SYNTHETIC_ATTRIBUTE | ((access & SYNTHETIC_ATTRIBUTE) / TO_SYNTHETIC);
      return access & ~mask;
   }

   public static int asDeprecated(int access) { return access | DEPRECATED; }
   public static int asSynthetic(int access)  { return access | SYNTHETIC | SYNTHETIC_ATTRIBUTE; }
}