Scala example source code file (ClassfileConstants.scala)

This example Scala source code file (ClassfileConstants.scala) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Scala tags/keywords

classfileconstants, constant_double, constant_fieldref, constant_float, constant_methodref, d, enum_tag, enum_tag, java_acc_bridge, java_acc_synchronized, java_minor_version, t_int, x, x

The Scala ClassfileConstants.scala source code

/* NSC -- new Scala compiler
 * Copyright 2005-2011 LAMP/EPFL
 * @author  Martin Odersky
 */

package scala.tools.nsc
package symtab
package classfile

object ClassfileConstants {

  final val JAVA_MAGIC = 0xCAFEBABE
  final val JAVA_MAJOR_VERSION = 45
  final val JAVA_MINOR_VERSION = 3

  /** <p>
   *    (see http://java.sun.com/docs/books/jvms/second_edition/jvms-clarify.html)
   *  </p>
   *  <p>
   *    If the <code>ACC_INTERFACE flag is set, the ACC_ABSTRACT
   *    flag must also be set (ch. 2.13.1).
   *  </p>
   *  <p>
   *    A class file cannot have both its <code>ACC_FINAL and
   *    <code>ACC_ABSTRACT flags set (ch. 2.8.2).
   *  </p>
   *  <p>
   *    A field may have at most one of its <code>ACC_PRIVATE,
   *    <code>ACC_PROTECTED, ACC_PUBLIC flags set (ch. 2.7.4).
   *  </p>
   *  <p>
   *    A field may not have both its <code>ACC_FINAL and
   *    <code>ACC_VOLATILE flags set (ch. 2.9.1).
   *  </p>
   *  <p>
   *    If a method has its <code>ACC_ABSTRACT flag set it must not
   *    have any of its <code>ACC_FINAL, ACC_NATIVE,
   *    <code>ACC_PRIVATE, ACC_STATIC, ACC_STRICT,
   *    or <code>ACC_SYNCHRONIZED flags set (ch. 2.13.3.2).
   *  </p>
   *  <p>
   *    All interface methods must have their <code>ACC_ABSTRACT and
   *    <code>ACC_PUBLIC flags set.
   *  </p>
   */                                        // Class   Field   Method
  final val JAVA_ACC_PUBLIC       = 0x0001   //   X       X        X
  final val JAVA_ACC_PRIVATE      = 0x0002   //           X        X
  final val JAVA_ACC_PROTECTED    = 0x0004   //           X        X
  final val JAVA_ACC_STATIC       = 0x0008   //           X        X
  final val JAVA_ACC_FINAL        = 0x0010   //   X       X        X
  final val JAVA_ACC_SUPER        = 0x0020   //   X
  final val JAVA_ACC_SYNCHRONIZED = 0x0020   //                    X
  final val JAVA_ACC_VOLATILE     = 0x0040   //           X
  final val JAVA_ACC_BRIDGE       = 0x0040   //                    X
  final val JAVA_ACC_TRANSIENT    = 0x0080   //           X
  final val JAVA_ACC_VARARGS      = 0x0080   //                    X
  final val JAVA_ACC_NATIVE       = 0x0100   //                    X
  final val JAVA_ACC_INTERFACE    = 0x0200   //   X
  final val JAVA_ACC_ABSTRACT     = 0x0400   //   X                X
  final val JAVA_ACC_STRICT       = 0x0800   //                    X
  final val JAVA_ACC_SYNTHETIC    = 0x1000   //   X       X        X
  final val JAVA_ACC_ANNOTATION   = 0x2000   //   X
  final val JAVA_ACC_ENUM         = 0x4000   //   X       X

  // tags describing the type of a literal in the constant pool
  final val CONSTANT_UTF8          =  1
  final val CONSTANT_UNICODE       =  2
  final val CONSTANT_INTEGER       =  3
  final val CONSTANT_FLOAT         =  4
  final val CONSTANT_LONG          =  5
  final val CONSTANT_DOUBLE        =  6
  final val CONSTANT_CLASS         =  7
  final val CONSTANT_STRING        =  8
  final val CONSTANT_FIELDREF      =  9
  final val CONSTANT_METHODREF     = 10
  final val CONSTANT_INTFMETHODREF = 11
  final val CONSTANT_NAMEANDTYPE   = 12

  // tags describing the type of a literal in attribute values
  final val BYTE_TAG   = 'B'
  final val CHAR_TAG   = 'C'
  final val DOUBLE_TAG = 'D'
  final val FLOAT_TAG  = 'F'
  final val INT_TAG    = 'I'
  final val LONG_TAG   = 'J'
  final val SHORT_TAG  = 'S'
  final val BOOL_TAG   = 'Z'
  final val STRING_TAG = 's'
  final val ENUM_TAG   = 'e'
  final val CLASS_TAG  = 'c'
  final val ARRAY_TAG  = '['
  final val VOID_TAG   = 'V'
  final val TVAR_TAG   = 'T'
  final val ANNOTATION_TAG = '@'
  final val SCALA_NOTHING = "scala.runtime.Nothing$"
  final val SCALA_NULL = "scala.runtime.Null$"

  
  // tags describing the type of newarray
  final val T_BOOLEAN = 4
  final val T_CHAR    = 5
  final val T_FLOAT   = 6
  final val T_DOUBLE  = 7
  final val T_BYTE    = 8
  final val T_SHORT   = 9
  final val T_INT     = 10
  final val T_LONG    = 11

  // JVM mnemonics
  final val nop         = 0x00
  final val aconst_null = 0x01
  final val iconst_m1   = 0x02
  
  final val iconst_0    = 0x03
  final val iconst_1    = 0x04
  final val iconst_2    = 0x05
  final val iconst_3    = 0x06
  final val iconst_4    = 0x07
  final val iconst_5    = 0x08
	
  final val lconst_0    = 0x09
  final val lconst_1    = 0x0a
  final val fconst_0    = 0x0b
  final val fconst_1    = 0x0c
  final val fconst_2    = 0x0d
  final val dconst_0    = 0x0e
  final val dconst_1    = 0x0f

  final val bipush      = 0x10
  final val sipush      = 0x11
  final val ldc         = 0x12
  final val ldc_w       = 0x13
  final val ldc2_w      = 0x14
  	  
  final val iload       = 0x15
  final val lload       = 0x16
  final val fload       = 0x17
  final val dload       = 0x18
  final val aload       = 0x19
  	  
  final val iload_0     = 0x1a
  final val iload_1     = 0x1b
  final val iload_2     = 0x1c
  final val iload_3     = 0x1d
  final val lload_0     = 0x1e
  final val lload_1     = 0x1f
  final val lload_2     = 0x20
  final val lload_3     = 0x21
  final val fload_0     = 0x22
  final val fload_1     = 0x23
  final val fload_2     = 0x24
  final val fload_3     = 0x25
  final val dload_0     = 0x26
  final val dload_1     = 0x27
  final val dload_2     = 0x28
  final val dload_3     = 0x29
  final val aload_0     = 0x2a
  final val aload_1     = 0x2b
  final val aload_2     = 0x2c
  final val aload_3     = 0x2d
  final val iaload      = 0x2e
  final val laload      = 0x2f
  final val faload      = 0x30
  final val daload      = 0x31
  final val aaload      = 0x32
  final val baload      = 0x33
  final val caload      = 0x34
  final val saload      = 0x35
  	  
  final val istore      = 0x36
  final val lstore      = 0x37
  final val fstore      = 0x38
  final val dstore      = 0x39
  final val astore      = 0x3a
  final val istore_0    = 0x3b
  final val istore_1    = 0x3c
  final val istore_2    = 0x3d
  final val istore_3    = 0x3e
  final val lstore_0    = 0x3f
  final val lstore_1    = 0x40
  final val lstore_2    = 0x41
  final val lstore_3    = 0x42
  final val fstore_0    = 0x43
  final val fstore_1    = 0x44
  final val fstore_2    = 0x45
  final val fstore_3    = 0x46
  final val dstore_0    = 0x47
  final val dstore_1    = 0x48
  final val dstore_2    = 0x49
  final val dstore_3    = 0x4a
  final val astore_0    = 0x4b
  final val astore_1    = 0x4c
  final val astore_2    = 0x4d
  final val astore_3    = 0x4e
  final val iastore     = 0x4f
  final val lastore     = 0x50
  final val fastore     = 0x51
  final val dastore     = 0x52
  final val aastore     = 0x53
  final val bastore     = 0x54
  final val castore     = 0x55
  final val sastore     = 0x56
	
  final val pop         = 0x57
  final val pop2        = 0x58
  final val dup         = 0x59
  final val dup_x1      = 0x5a
  final val dup_x2      = 0x5b
  final val dup2        = 0x5c
  final val dup2_x1     = 0x5d
  final val dup2_x2     = 0x5e
  final val swap        = 0x5f
  	  
  final val iadd        = 0x60
  final val ladd        = 0x61
  final val fadd        = 0x62
  final val dadd        = 0x63
  final val isub        = 0x64
  final val lsub        = 0x65
  final val fsub        = 0x66
  final val dsub        = 0x67
  final val imul        = 0x68
  final val lmul        = 0x69
  final val fmul        = 0x6a
  final val dmul        = 0x6b
  final val idiv        = 0x6c
  final val ldiv        = 0x6d
  final val fdiv        = 0x6e
  final val ddiv        = 0x6f
  final val irem        = 0x70
  final val lrem        = 0x71
  final val frem        = 0x72
  final val drem        = 0x73
  	  
  final val ineg        = 0x74
  final val lneg        = 0x75
  final val fneg        = 0x76
  final val dneg        = 0x77
	
  final val ishl        = 0x78
  final val lshl        = 0x79
  final val ishr        = 0x7a
  final val lshr        = 0x7b
  final val iushr       = 0x7c
  final val lushr       = 0x7d
  final val iand        = 0x7e
  final val land        = 0x7f
  final val ior         = 0x80
  final val lor         = 0x81
  final val ixor        = 0x82
  final val lxor        = 0x83
  final val iinc        = 0x84
  	  
  final val i2l         = 0x85
  final val i2f         = 0x86
  final val i2d         = 0x87
  final val l2i         = 0x88
  final val l2f         = 0x89
  final val l2d         = 0x8a
  final val f2i         = 0x8b
  final val f2l         = 0x8c
  final val f2d         = 0x8d
  final val d2i         = 0x8e
  final val d2l         = 0x8f
  final val d2f         = 0x90
  final val i2b         = 0x91
  final val i2c         = 0x92
  final val i2s         = 0x93
  	  
  final val lcmp        = 0x94
  final val fcmpl       = 0x95
  final val fcmpg       = 0x96
  final val dcmpl       = 0x97
  final val dcmpg       = 0x98
  	  
  final val ifeq        = 0x99
  final val ifne        = 0x9a
  final val iflt        = 0x9b
  final val ifge        = 0x9c
  final val ifgt        = 0x9d
  final val ifle        = 0x9e
  final val if_icmpeq   = 0x9f
  final val if_icmpne   = 0xa0
  final val if_icmplt   = 0xa1
  final val if_icmpge   = 0xa2
  final val if_icmpgt   = 0xa3
  final val if_icmple   = 0xa4
  final val if_acmpeq   = 0xa5
  final val if_acmpne   = 0xa6
  final val goto        = 0xa7
  final val jsr         = 0xa8
  final val ret         = 0xa9
  final val tableswitch = 0xaa
  final val lookupswitch = 0xab
  final val ireturn     = 0xac
  final val lreturn     = 0xad
  final val freturn     = 0xae
  final val dreturn     = 0xaf
  final val areturn     = 0xb0
  final val return_     = 0xb1

  final val getstatic   = 0xb2
  final val putstatic   = 0xb3
  final val getfield    = 0xb4
  final val putfield    = 0xb5
  	  	
  final val invokevirtual   = 0xb6
  final val invokespecial   = 0xb7
  final val invokestatic    = 0xb8
  final val invokeinterface = 0xb9
  final val xxxunusedxxxx   = 0xba
  	  
  final val new_          = 0xbb
  final val newarray      = 0xbc
  final val anewarray     = 0xbd
  final val arraylength   = 0xbe
  final val athrow        = 0xbf
  final val checkcast     = 0xc0
  final val instanceof    = 0xc1    
  final val monitorenter  = 0xc2
  final val monitorexit   = 0xc3
  final val wide          = 0xc4
  final val multianewarray = 0xc5
  final val ifnull        = 0xc6
  final val ifnonnull     = 0xc7
  final val goto_w        = 0xc8
  final val jsr_w         = 0xc9
  	  
  // reserved opcodes
  final val breakpoint    = 0xca
  final val impdep1       = 0xfe
  final val impdep2       = 0xff  
}