jdk8-mips64-public/langtools: src/share/classes/com/sun/tools/javac/code/Attribute.java@9a66ca7c79fa (annotated)

src/share/classes/com/sun/tools/javac/code/Attribute.java@9a66ca7c79fa (annotated)

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

Sat, 01 Dec 2007 00:00:00 +0000

author: duke
date: Sat, 01 Dec 2007 00:00:00 +0000
changeset 1: 9a66ca7c79fa
child 104: 5e89c4ca637c
permissions: -rw-r--r--

Initial load

 /*
  * Copyright 2003-2005 Sun Microsystems, Inc.  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.  Sun designates this
  * particular file as subject to the "Classpath" exception as provided
  * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  * CA 95054 USA or visit www.sun.com if you need additional information or
  * have any questions.
  */
 package com.sun.tools.javac.code;
 import java.util.LinkedHashMap;
 import java.util.Map;
 import javax.lang.model.element.AnnotationMirror;
 import javax.lang.model.element.AnnotationValue;
 import javax.lang.model.element.AnnotationValueVisitor;
 import javax.lang.model.element.ExecutableElement;
 import javax.lang.model.type.DeclaredType;
 import com.sun.tools.javac.code.Symbol.*;
 import com.sun.tools.javac.util.*;
 import static com.sun.tools.javac.code.TypeTags.*;
 /** An annotation value.
  *
  *  <p><b>This is NOT part of any API supported by Sun Microsystems.  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 abstract class Attribute implements AnnotationValue {
     /** The type of the annotation element. */
     public Type type;
     public Attribute(Type type) {
         this.type = type;
     }
     public abstract void accept(Visitor v);
     public Object getValue() {
         throw new UnsupportedOperationException();
     }
     public <R, P> R accept(AnnotationValueVisitor<R, P> v, P p) {
         throw new UnsupportedOperationException();
     }
     /** The value for an annotation element of primitive type or String. */
     public static class Constant extends Attribute {
         public final Object value;
         public void accept(Visitor v) { v.visitConstant(this); }
         public Constant(Type type, Object value) {
             super(type);
             this.value = value;
         }
         public String toString() {
             return Constants.format(value, type);
         }
         public Object getValue() {
             return Constants.decode(value, type);
         }
         public <R, P> R accept(AnnotationValueVisitor<R, P> v, P p) {
             if (value instanceof String)
                 return v.visitString((String) value, p);
             if (value instanceof Integer) {
                 int i = (Integer) value;
                 switch (type.tag) {
                 case BOOLEAN:   return v.visitBoolean(i != 0, p);
                 case CHAR:      return v.visitChar((char) i, p);
                 case BYTE:      return v.visitByte((byte) i, p);
                 case SHORT:     return v.visitShort((short) i, p);
                 case INT:       return v.visitInt(i, p);
                 }
             }
             switch (type.tag) {
             case LONG:          return v.visitLong((Long) value, p);
             case FLOAT:         return v.visitFloat((Float) value, p);
             case DOUBLE:        return v.visitDouble((Double) value, p);
             }
             throw new AssertionError("Bad annotation element value: " + value);
         }
     }
     /** The value for an annotation element of type java.lang.Class,
      *  represented as a ClassSymbol.
      */
     public static class Class extends Attribute {
         public final Type type;
         public void accept(Visitor v) { v.visitClass(this); }
         public Class(Types types, Type type) {
             super(makeClassType(types, type));
             this.type = type;
         }
         static Type makeClassType(Types types, Type type) {
             Type arg = type.isPrimitive()
                 ? types.boxedClass(type).type
                 : types.erasure(type);
             return new Type.ClassType(types.syms.classType.getEnclosingType(),
                                       List.of(arg),
                                       types.syms.classType.tsym);
         }
         public String toString() {
             return type + ".class";
         }
         public Type getValue() {
             return type;
         }
         public <R, P> R accept(AnnotationValueVisitor<R, P> v, P p) {
             return v.visitType(type, p);
         }
     }
     /** A compound annotation element value, the type of which is an
      *  attribute interface.
      */
     public static class Compound extends Attribute implements AnnotationMirror {
         /** The attributes values, as pairs.  Each pair contains a
          *  reference to the accessing method in the attribute interface
          *  and the value to be returned when that method is called to
          *  access this attribute.
          */
         public final List<Pair<MethodSymbol,Attribute>> values;
         public Compound(Type type,
                         List<Pair<MethodSymbol,Attribute>> values) {
             super(type);
             this.values = values;
         }
         public void accept(Visitor v) { v.visitCompound(this); }
         /**
          * Returns a string representation of this annotation.
          * String is of one of the forms:
          *     @com.example.foo(name1=val1, name2=val2)
          *     @com.example.foo(val)
          *     @com.example.foo
          * Omit parens for marker annotations, and omit "value=" when allowed.
          */
         public String toString() {
             StringBuilder buf = new StringBuilder();
             buf.append("@");
             buf.append(type);
             int len = values.length();
             if (len > 0) {
                 buf.append('(');
                 boolean first = true;
                 for (Pair<MethodSymbol, Attribute> value : values) {
                     if (!first) buf.append(", ");
                     first = false;
                     Name name = value.fst.name;
                     if (len > 1 || name != name.table.value) {
                         buf.append(name);
                         buf.append('=');
                     }
                     buf.append(value.snd);
                 }
                 buf.append(')');
             }
             return buf.toString();
         }
         public Attribute member(Name member) {
             for (Pair<MethodSymbol,Attribute> pair : values)
                 if (pair.fst.name == member) return pair.snd;
             return null;
         }
         public Attribute.Compound getValue() {
             return this;
         }
         public <R, P> R accept(AnnotationValueVisitor<R, P> v, P p) {
             return v.visitAnnotation(this, p);
         }
         public DeclaredType getAnnotationType() {
             return (DeclaredType) type;
         }
         public Map<MethodSymbol, Attribute> getElementValues() {
             Map<MethodSymbol, Attribute> valmap =
                 new LinkedHashMap<MethodSymbol, Attribute>();
             for (Pair<MethodSymbol, Attribute> value : values)
                 valmap.put(value.fst, value.snd);
             return valmap;
         }
     }
     /** The value for an annotation element of an array type.
      */
     public static class Array extends Attribute {
         public final Attribute[] values;
         public Array(Type type, Attribute[] values) {
             super(type);
             this.values = values;
         }
         public void accept(Visitor v) { v.visitArray(this); }
         public String toString() {
             StringBuilder buf = new StringBuilder();
             buf.append('{');
             boolean first = true;
             for (Attribute value : values) {
                 if (!first)
                     buf.append(", ");
                 first = false;
                 buf.append(value);
             }
             buf.append('}');
             return buf.toString();
         }
         public List<Attribute> getValue() {
             return List.from(values);
         }
         public <R, P> R accept(AnnotationValueVisitor<R, P> v, P p) {
             return v.visitArray(getValue(), p);
         }
     }
     /** The value for an annotation element of an enum type.
      */
     public static class Enum extends Attribute {
         public VarSymbol value;
         public Enum(Type type, VarSymbol value) {
             super(type);
             assert value != null;
             this.value = value;
         }
         public void accept(Visitor v) { v.visitEnum(this); }
         public String toString() {
             return value.enclClass() + "." + value;     // qualified name
         }
         public VarSymbol getValue() {
             return value;
         }
         public <R, P> R accept(AnnotationValueVisitor<R, P> v, P p) {
             return v.visitEnumConstant(value, p);
         }
     }
     public static class Error extends Attribute {
         public Error(Type type) {
             super(type);
         }
         public void accept(Visitor v) { v.visitError(this); }
         public String toString() {
             return "<error>";
         }
         public String getValue() {
             return toString();
         }
         public <R, P> R accept(AnnotationValueVisitor<R, P> v, P p) {
             return v.visitString(toString(), p);
         }
     }
     /** A visitor type for dynamic dispatch on the kind of attribute value. */
     public static interface Visitor {
         void visitConstant(Attribute.Constant value);
         void visitClass(Attribute.Class clazz);
         void visitCompound(Attribute.Compound compound);
         void visitArray(Attribute.Array array);
         void visitEnum(Attribute.Enum e);
         void visitError(Attribute.Error e);
     }
 }

Mercurial > jdk8-mips64-public > langtools / annotate

src/share/classes/com/sun/tools/javac/code/Attribute.java@9a66ca7c79fa (annotated)

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