jdk8-mips64-public/langtools: src/share/classes/com/sun/tools/javac/code/TypeTag.java@af8417e590f4 (annotated)

src/share/classes/com/sun/tools/javac/code/TypeTag.java@af8417e590f4 (annotated)

src/share/classes/com/sun/tools/javac/code/TypeTag.java

Sun, 17 Feb 2013 16:44:55 -0500

author: dholmes
date: Sun, 17 Feb 2013 16:44:55 -0500
changeset 1571: af8417e590f4
parent 1442: fcf89720ae71
child 1826: 9851071b551a
permissions: -rw-r--r--

Merge

 /*
  * Copyright (c) 1999, 2012, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.  Oracle designates this
  * particular file as subject to the "Classpath" exception as provided
  * by Oracle in the LICENSE file that accompanied this code.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */
 package com.sun.tools.javac.code;
 import com.sun.source.tree.Tree.Kind;
 import javax.lang.model.type.TypeKind;
 /** An interface for type tag values, which distinguish between different
  *  sorts of types.
  *
  *  <p><b>This is NOT part of any supported API.
  *  If you write code that depends on this, you do so at your own risk.
  *  This code and its internal interfaces are subject to change or
  *  deletion without notice.</b>
  */
 public enum TypeTag {
     /** The tag of the basic type `byte'.
      */
     BYTE(1),
     /** The tag of the basic type `char'.
      */
     CHAR(2),
     /** The tag of the basic type `short'.
      */
     SHORT(3),
     /** The tag of the basic type `int'.
      */
     INT(4),
     /** The tag of the basic type `long'.
      */
     LONG(5),
     /** The tag of the basic type `float'.
      */
     FLOAT(6),
     /** The tag of the basic type `double'.
      */
     DOUBLE(7),
     /** The tag of the basic type `boolean'.
      */
     BOOLEAN,
     /** The tag of the type `void'.
      */
     VOID,
     /** The tag of all class and interface types.
      */
     CLASS,
     /** The tag of all array types.
      */
     ARRAY,
     /** The tag of all (monomorphic) method types.
      */
     METHOD,
     /** The tag of all package "types".
      */
     PACKAGE,
     /** The tag of all (source-level) type variables.
      */
     TYPEVAR,
     /** The tag of all type arguments.
      */
     WILDCARD,
     /** The tag of all polymorphic (method-) types.
      */
     FORALL,
     /** The tag of deferred expression types in method context
      */
     DEFERRED,
     /** The tag of the bottom type {@code <null>}.
      */
     BOT,
     /** The tag of a missing type.
      */
     NONE,
     /** The tag of the error type.
      */
     ERROR,
     /** The tag of an unknown type
      */
     UNKNOWN,
     /** The tag of all instantiatable type variables.
      */
     UNDETVAR,
     /** Pseudo-types, these are special tags
      */
     UNINITIALIZED_THIS,
     UNINITIALIZED_OBJECT;
     /** This field will only be used for tags related with numeric types for
      *  optimization reasons.
      */
     private final int order;
     private TypeTag() {
         this(0);
     }
     private TypeTag(int order) {
         this.order = order;
     }
     private static final int MIN_NUMERIC_TAG_ORDER = 1;
     private static final int MAX_NUMERIC_TAG_ORDER = 7;
     /** Returns the number of type tags.
      */
     public static int getTypeTagCount() {
         // last two tags are not included in the total as long as they are pseudo-types
         return (UNDETVAR.ordinal() + 1);
     }
     public boolean isSubRangeOf(TypeTag range) {
         return (this == range) || isStrictSubRangeOf(range);
     }
     public boolean isStrictSubRangeOf(TypeTag range) {
         if (this.order >= MIN_NUMERIC_TAG_ORDER && this.order <= MAX_NUMERIC_TAG_ORDER &&
             range.order >= MIN_NUMERIC_TAG_ORDER && this.order <= MAX_NUMERIC_TAG_ORDER) {
             if (this == range)
                 return false;
             switch (this) {
                 case BYTE:
                     return true;
                 case CHAR: case SHORT: case INT:
                 case LONG: case FLOAT:
                     return this.order < range.order && range.order <= MAX_NUMERIC_TAG_ORDER;
                 default:
                     return false;
             }
         }
         else
             return false;
     }
     public Kind getKindLiteral() {
         switch (this) {
         case INT:
             return Kind.INT_LITERAL;
         case LONG:
             return Kind.LONG_LITERAL;
         case FLOAT:
             return Kind.FLOAT_LITERAL;
         case DOUBLE:
             return Kind.DOUBLE_LITERAL;
         case BOOLEAN:
             return Kind.BOOLEAN_LITERAL;
         case CHAR:
             return Kind.CHAR_LITERAL;
         case CLASS:
             return Kind.STRING_LITERAL;
         case BOT:
             return Kind.NULL_LITERAL;
         default:
             throw new AssertionError("unknown literal kind " + this);
         }
     }
     public TypeKind getPrimitiveTypeKind() {
         switch (this) {
         case BOOLEAN:
             return TypeKind.BOOLEAN;
         case BYTE:
             return TypeKind.BYTE;
         case SHORT:
             return TypeKind.SHORT;
         case INT:
             return TypeKind.INT;
         case LONG:
             return TypeKind.LONG;
         case CHAR:
             return TypeKind.CHAR;
         case FLOAT:
             return TypeKind.FLOAT;
         case DOUBLE:
             return TypeKind.DOUBLE;
         case VOID:
             return TypeKind.VOID;
         default:
             throw new AssertionError("unknown primitive type " + this);
         }
     }
 }

Mercurial > jdk8-mips64-public > langtools / annotate

src/share/classes/com/sun/tools/javac/code/TypeTag.java@af8417e590f4 (annotated)

src/share/classes/com/sun/tools/javac/code/TypeTag.java