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src/jdk.jdeps/share/classes/com/sun/tools/classfile/AccessFlags.java

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 22  * or visit www.oracle.com if you need additional information or have any
 23  * questions.
 24  */
 25 
 26 package com.sun.tools.classfile;
 27 
 28 import java.io.IOException;
 29 import java.util.LinkedHashSet;
 30 import java.util.Set;
 31 
 32 /**
 33  * See JVMS, sections 4.2, 4.6, 4.7.
 34  *
 35  *  <p><b>This is NOT part of any supported API.
 36  *  If you write code that depends on this, you do so at your own risk.
 37  *  This code and its internal interfaces are subject to change or
 38  *  deletion without notice.</b>
 39  */
 40 public class AccessFlags {
 41     public static final int ACC_PUBLIC        = 0x0001; // class, inner, field, method

 42     public static final int ACC_PRIVATE       = 0x0002; //        inner, field, method
 43     public static final int ACC_PROTECTED     = 0x0004; //        inner, field, method
 44     public static final int ACC_STATIC        = 0x0008; //        inner, field, method
 45     public static final int ACC_FINAL         = 0x0010; // class, inner, field, method
 46     public static final int ACC_SUPER         = 0x0020; // class
 47     public static final int ACC_SYNCHRONIZED  = 0x0020; //                      method
 48     public static final int ACC_VOLATILE      = 0x0040; //               field
 49     public static final int ACC_BRIDGE        = 0x0040; //                      method
 50     public static final int ACC_TRANSIENT     = 0x0080; //               field
 51     public static final int ACC_VARARGS       = 0x0080; //                      method

 52     public static final int ACC_NATIVE        = 0x0100; //                      method
 53     public static final int ACC_INTERFACE     = 0x0200; // class, inner
 54     public static final int ACC_ABSTRACT      = 0x0400; // class, inner,        method
 55     public static final int ACC_STRICT        = 0x0800; //                      method
 56     public static final int ACC_SYNTHETIC     = 0x1000; // class, inner, field, method
 57     public static final int ACC_ANNOTATION    = 0x2000; // class, inner
 58     public static final int ACC_ENUM          = 0x4000; // class, inner, field
 59     public static final int ACC_MANDATED      = 0x8000; //                          method parameter
 60     public static final int ACC_MODULE        = 0x8000; // class
 61 
 62     public static enum Kind { Class, InnerClass, Field, Method}
 63 
 64     AccessFlags(ClassReader cr) throws IOException {
 65         this(cr.readUnsignedShort());
 66     }
 67 
 68     public AccessFlags(int flags) {
 69         this.flags = flags;
 70     }
 71 
 72     public AccessFlags ignore(int mask) {
 73         return new AccessFlags(flags & ~mask);
 74     }
 75 
 76     public boolean is(int mask) {
 77         return (flags & mask) != 0;
 78     }
 79 
 80     public int byteLength() {
 81         return 2;
 82     }
 83 
 84     private static final int[] classModifiers = {
 85         ACC_PUBLIC, ACC_FINAL, ACC_ABSTRACT
 86     };
 87 
 88     private static final int[] classFlags = {
 89         ACC_PUBLIC, ACC_FINAL, ACC_SUPER, ACC_INTERFACE, ACC_ABSTRACT,
 90         ACC_SYNTHETIC, ACC_ANNOTATION, ACC_ENUM, ACC_MODULE
 91     };
 92 
 93     public Set<String> getClassModifiers() {
 94         int f = ((flags & ACC_INTERFACE) != 0 ? flags & ~ACC_ABSTRACT : flags);
 95         return getModifiers(f, classModifiers, Kind.Class);
 96     }
 97 
 98     public Set<String> getClassFlags() {
 99         return getFlags(classFlags, Kind.Class);
100     }
101 
102     private static final int[] innerClassModifiers = {
103         ACC_PUBLIC, ACC_PRIVATE, ACC_PROTECTED, ACC_STATIC, ACC_FINAL,
104         ACC_ABSTRACT
105     };
106 
107     private static final int[] innerClassFlags = {
108         ACC_PUBLIC, ACC_PRIVATE, ACC_PROTECTED, ACC_STATIC, ACC_FINAL, ACC_SUPER,
109         ACC_INTERFACE, ACC_ABSTRACT, ACC_SYNTHETIC, ACC_ANNOTATION, ACC_ENUM
110     };
111 
112     public Set<String> getInnerClassModifiers() {
113         int f = ((flags & ACC_INTERFACE) != 0 ? flags & ~ACC_ABSTRACT : flags);
114         return getModifiers(f, innerClassModifiers, Kind.InnerClass);
115     }
116 
117     public Set<String> getInnerClassFlags() {
118         return getFlags(innerClassFlags, Kind.InnerClass);
119     }
120 
121     private static final int[] fieldModifiers = {
122         ACC_PUBLIC, ACC_PRIVATE, ACC_PROTECTED, ACC_STATIC, ACC_FINAL,
123         ACC_VOLATILE, ACC_TRANSIENT
124     };
125 
126     private static final int[] fieldFlags = {
127         ACC_PUBLIC, ACC_PRIVATE, ACC_PROTECTED, ACC_STATIC, ACC_FINAL,
128         ACC_VOLATILE, ACC_TRANSIENT, ACC_SYNTHETIC, ACC_ENUM
129     };

186     }
187 
188     private static String flagToModifier(int flag, Kind t) {
189         switch (flag) {
190             case ACC_PUBLIC:
191                 return "public";
192             case ACC_PRIVATE:
193                 return "private";
194             case ACC_PROTECTED:
195                 return "protected";
196             case ACC_STATIC:
197                 return "static";
198             case ACC_FINAL:
199                 return "final";
200             case ACC_SYNCHRONIZED:
201                 return "synchronized";
202             case 0x80:
203                 return (t == Kind.Field ? "transient" : null);
204             case ACC_VOLATILE:
205                 return "volatile";
206             case ACC_NATIVE:
207                 return "native";

208             case ACC_ABSTRACT:
209                 return "abstract";
210             case ACC_STRICT:
211                 return "strictfp";
212             case ACC_MANDATED:
213                 return "mandated";
214             default:
215                 return null;
216         }
217     }
218 
219     private static String flagToName(int flag, Kind t) {
220         switch (flag) {
221         case ACC_PUBLIC:
222             return "ACC_PUBLIC";
223         case ACC_PRIVATE:
224             return "ACC_PRIVATE";
225         case ACC_PROTECTED:
226             return "ACC_PROTECTED";
227         case ACC_STATIC:
228             return "ACC_STATIC";
229         case ACC_FINAL:
230             return "ACC_FINAL";
231         case 0x20:
232             return (t == Kind.Class ? "ACC_SUPER" : "ACC_SYNCHRONIZED");
233         case 0x40:
234             return (t == Kind.Field ? "ACC_VOLATILE" : "ACC_BRIDGE");
235         case 0x80:
236             return (t == Kind.Field ? "ACC_TRANSIENT" : "ACC_VARARGS");
237         case ACC_NATIVE:
238             return "ACC_NATIVE";
239         case ACC_INTERFACE:
240             return "ACC_INTERFACE";
241         case ACC_ABSTRACT:
242             return "ACC_ABSTRACT";
243         case ACC_STRICT:
244             return "ACC_STRICT";
245         case ACC_SYNTHETIC:
246             return "ACC_SYNTHETIC";
247         case ACC_ANNOTATION:
248             return "ACC_ANNOTATION";
249         case ACC_ENUM:
250             return "ACC_ENUM";
251         case 0x8000:
252             return (t == Kind.Class ? "ACC_MODULE" : "ACC_MANDATED");
253         default:
254             return null;
255         }
256     }
257 
258     public final int flags;

 22  * or visit www.oracle.com if you need additional information or have any
 23  * questions.
 24  */
 25 
 26 package com.sun.tools.classfile;
 27 
 28 import java.io.IOException;
 29 import java.util.LinkedHashSet;
 30 import java.util.Set;
 31 
 32 /**
 33  * See JVMS, sections 4.2, 4.6, 4.7.
 34  *
 35  *  <p><b>This is NOT part of any supported API.
 36  *  If you write code that depends on this, you do so at your own risk.
 37  *  This code and its internal interfaces are subject to change or
 38  *  deletion without notice.</b>
 39  */
 40 public class AccessFlags {
 41     public static final int ACC_PUBLIC        = 0x0001; // class, inner, field, method
 42     public static final int ACC_REF_DEFAULT   = 0x0001; // javac extra
 43     public static final int ACC_PRIVATE       = 0x0002; //        inner, field, method
 44     public static final int ACC_PROTECTED     = 0x0004; //        inner, field, method
 45     public static final int ACC_STATIC        = 0x0008; //        inner, field, method
 46     public static final int ACC_FINAL         = 0x0010; // class, inner, field, method
 47     public static final int ACC_SUPER         = 0x0020; // class
 48     public static final int ACC_SYNCHRONIZED  = 0x0020; //                      method
 49     public static final int ACC_VOLATILE      = 0x0040; //               field
 50     public static final int ACC_BRIDGE        = 0x0040; //                      method
 51     public static final int ACC_TRANSIENT     = 0x0080; //               field
 52     public static final int ACC_VARARGS       = 0x0080; //                      method
 53     public static final int ACC_PRIMITIVE     = 0x0100; // class
 54     public static final int ACC_NATIVE        = 0x0100; //                      method
 55     public static final int ACC_INTERFACE     = 0x0200; // class, inner
 56     public static final int ACC_ABSTRACT      = 0x0400; // class, inner,        method
 57     public static final int ACC_STRICT        = 0x0800; //                      method
 58     public static final int ACC_SYNTHETIC     = 0x1000; // class, inner, field, method
 59     public static final int ACC_ANNOTATION    = 0x2000; // class, inner
 60     public static final int ACC_ENUM          = 0x4000; // class, inner, field
 61     public static final int ACC_MANDATED      = 0x8000; //                          method parameter
 62     public static final int ACC_MODULE        = 0x8000; // class
 63 
 64     public static enum Kind { Class, InnerClass, Field, Method, JavacExtra}
 65 
 66     AccessFlags(ClassReader cr) throws IOException {
 67         this(cr.readUnsignedShort());
 68     }
 69 
 70     public AccessFlags(int flags) {
 71         this.flags = flags;
 72     }
 73 
 74     public AccessFlags ignore(int mask) {
 75         return new AccessFlags(flags & ~mask);
 76     }
 77 
 78     public boolean is(int mask) {
 79         return (flags & mask) != 0;
 80     }
 81 
 82     public int byteLength() {
 83         return 2;
 84     }
 85 
 86     private static final int[] classModifiers = {
 87         ACC_PUBLIC, ACC_FINAL, ACC_ABSTRACT, ACC_PRIMITIVE
 88     };
 89 
 90     private static final int[] classFlags = {
 91         ACC_PUBLIC, ACC_FINAL, ACC_SUPER, ACC_INTERFACE, ACC_ABSTRACT,
 92         ACC_SYNTHETIC, ACC_ANNOTATION, ACC_ENUM, ACC_MODULE, ACC_PRIMITIVE
 93     };
 94 
 95     public Set<String> getClassModifiers() {
 96         int f = ((flags & ACC_INTERFACE) != 0 ? flags & ~ACC_ABSTRACT : flags);
 97         return getModifiers(f, classModifiers, Kind.Class);
 98     }
 99 
100     public Set<String> getClassFlags() {
101         return getFlags(classFlags, Kind.Class);
102     }
103 
104     private static final int[] innerClassModifiers = {
105         ACC_PUBLIC, ACC_PRIVATE, ACC_PROTECTED, ACC_STATIC, ACC_FINAL,
106         ACC_ABSTRACT, ACC_PRIMITIVE
107     };
108 
109     private static final int[] innerClassFlags = {
110         ACC_PUBLIC, ACC_PRIVATE, ACC_PROTECTED, ACC_STATIC, ACC_FINAL, ACC_SUPER,
111         ACC_INTERFACE, ACC_ABSTRACT, ACC_SYNTHETIC, ACC_ANNOTATION, ACC_ENUM, ACC_PRIMITIVE
112     };
113 
114     public Set<String> getInnerClassModifiers() {
115         int f = ((flags & ACC_INTERFACE) != 0 ? flags & ~ACC_ABSTRACT : flags);
116         return getModifiers(f, innerClassModifiers, Kind.InnerClass);
117     }
118 
119     public Set<String> getInnerClassFlags() {
120         return getFlags(innerClassFlags, Kind.InnerClass);
121     }
122 
123     private static final int[] fieldModifiers = {
124         ACC_PUBLIC, ACC_PRIVATE, ACC_PROTECTED, ACC_STATIC, ACC_FINAL,
125         ACC_VOLATILE, ACC_TRANSIENT
126     };
127 
128     private static final int[] fieldFlags = {
129         ACC_PUBLIC, ACC_PRIVATE, ACC_PROTECTED, ACC_STATIC, ACC_FINAL,
130         ACC_VOLATILE, ACC_TRANSIENT, ACC_SYNTHETIC, ACC_ENUM
131     };

188     }
189 
190     private static String flagToModifier(int flag, Kind t) {
191         switch (flag) {
192             case ACC_PUBLIC:
193                 return "public";
194             case ACC_PRIVATE:
195                 return "private";
196             case ACC_PROTECTED:
197                 return "protected";
198             case ACC_STATIC:
199                 return "static";
200             case ACC_FINAL:
201                 return "final";
202             case ACC_SYNCHRONIZED:
203                 return "synchronized";
204             case 0x80:
205                 return (t == Kind.Field ? "transient" : null);
206             case ACC_VOLATILE:
207                 return "volatile";
208             case 0x100:
209                 // ACC_NATIVE or ACC_PRIMITIVE
210                 return (t == Kind.Class || t == Kind.InnerClass) ? "primitive" : "native";
211             case ACC_ABSTRACT:
212                 return "abstract";
213             case ACC_STRICT:
214                 return "strictfp";
215             case ACC_MANDATED:
216                 return "mandated";
217             default:
218                 return null;
219         }
220     }
221 
222     private static String flagToName(int flag, Kind t) {
223         switch (flag) {
224         case ACC_PUBLIC:
225             return "ACC_PUBLIC";
226         case ACC_PRIVATE:
227             return "ACC_PRIVATE";
228         case ACC_PROTECTED:
229             return "ACC_PROTECTED";
230         case ACC_STATIC:
231             return "ACC_STATIC";
232         case ACC_FINAL:
233             return "ACC_FINAL";
234         case 0x20:
235             return (t == Kind.Class ? "ACC_SUPER" : "ACC_SYNCHRONIZED");
236         case 0x40:
237             return (t == Kind.Field ? "ACC_VOLATILE" : "ACC_BRIDGE");
238         case 0x80:
239             return (t == Kind.Field ? "ACC_TRANSIENT" : "ACC_VARARGS");
240         case 0x100:
241             return (t == Kind.Class || t == Kind.InnerClass) ? "ACC_PRIMITIVE" : "ACC_NATIVE";
242         case ACC_INTERFACE:
243             return "ACC_INTERFACE";
244         case ACC_ABSTRACT:
245             return "ACC_ABSTRACT";
246         case ACC_STRICT:
247             return "ACC_STRICT";
248         case ACC_SYNTHETIC:
249             return "ACC_SYNTHETIC";
250         case ACC_ANNOTATION:
251             return "ACC_ANNOTATION";
252         case ACC_ENUM:
253             return "ACC_ENUM";
254         case 0x8000:
255             return (t == Kind.Class ? "ACC_MODULE" : "ACC_MANDATED");
256         default:
257             return null;
258         }
259     }
260 
261     public final int flags;
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