8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package com.sun.tools.javap;
27
28 import java.lang.classfile.AccessFlags;
29 import java.lang.classfile.Attributes;
30 import java.lang.classfile.ClassFile;
31 import java.lang.classfile.ClassHierarchyResolver;
32 import java.lang.classfile.ClassModel;
33 import java.lang.classfile.ClassSignature;
34 import java.lang.classfile.FieldModel;
35 import java.lang.classfile.MethodModel;
36 import java.lang.classfile.MethodSignature;
37 import java.lang.classfile.Signature;
38 import java.lang.classfile.attribute.CodeAttribute;
39 import java.lang.classfile.attribute.SignatureAttribute;
40 import java.lang.classfile.constantpool.ClassEntry;
41 import java.lang.classfile.constantpool.ConstantValueEntry;
42 import java.lang.classfile.constantpool.PoolEntry;
43 import java.lang.constant.ClassDesc;
44 import java.lang.reflect.AccessFlag;
45 import java.lang.reflect.ClassFileFormatVersion;
46 import java.lang.reflect.Modifier;
47 import java.net.URI;
105 }
106
107 protected void setClassFile(ClassModel cm) {
108 classModel = cm;
109 }
110
111 protected MethodModel getMethod() {
112 return method;
113 }
114
115 protected void setMethod(MethodModel m) {
116 method = m;
117 }
118
119 protected ClassFileFormatVersion cffv() {
120 var major = classModel.majorVersion();
121 if (major < JAVA_1_VERSION || major > ClassFile.latestMajorVersion())
122 // something not representable by CFFV, let's fall back
123 return ClassFileFormatVersion.latest();
124 if (major >= JAVA_12_VERSION && classModel.minorVersion() != 0) {
125 // preview versions aren't explicitly supported, but latest is good enough for now
126 return ClassFileFormatVersion.latest();
127 }
128 return ClassFileFormatVersion.fromMajor(major);
129 }
130
131 public boolean write(ClassModel cm) {
132 errorReported = false;
133 setClassFile(cm);
134
135 if (options.sysInfo || options.verbose) {
136 if (uri != null) {
137 if (uri.getScheme().equals("file"))
138 println("Classfile " + uri.getPath());
139 else
140 println("Classfile " + uri);
141 }
142 indent(+1);
143 if (lastModified != -1) {
144 Date lm = new Date(lastModified);
145 DateFormat df = DateFormat.getDateInstance();
146 if (size > 0) {
150 println("Last modified " + df.format(lm));
151 }
152 } else if (size > 0) {
153 println("Size " + size + " bytes");
154 }
155 if (digestName != null && digest != null) {
156 StringBuilder sb = new StringBuilder();
157 for (byte b: digest)
158 sb.append(String.format("%02x", b));
159 println(digestName + " checksum " + sb);
160 }
161 }
162
163 cm.findAttribute(Attributes.sourceFile()).ifPresent(sfa ->
164 println("Compiled from \"" + sfa.sourceFile().stringValue() + "\""));
165
166 if (options.sysInfo || options.verbose) {
167 indent(-1);
168 }
169
170 writeModifiers(getClassModifiers(cm.flags()));
171
172 if ((classModel.flags().flagsMask() & ACC_MODULE) != 0) {
173 var attr = classModel.findAttribute(Attributes.module());
174 if (attr.isPresent()) {
175 var modAttr = attr.get();
176 if ((modAttr.moduleFlagsMask() & ACC_OPEN) != 0) {
177 print("open ");
178 }
179 print("module ");
180 print(() -> modAttr.moduleName().name().stringValue());
181 if (modAttr.moduleVersion().isPresent()) {
182 print("@");
183 print(() -> modAttr.moduleVersion().get().stringValue());
184 }
185 } else {
186 // fallback for malformed class files
187 print("class ");
188 print(() -> getJavaName(classModel.thisClass().asInternalName()));
189 }
190 } else {
793 case '\r': return "\\r";
794 case '\\': return "\\\\";
795 case '\'': return "\\'";
796 case '\"': return "\\\"";
797 default: return String.format("\\u%04x", (int) c);
798 }
799 }
800
801 private Set<String> getClassModifiers(AccessFlags flags) {
802 var flagSet = flagsReportUnknown(flags, cffv());
803 Set<AccessFlag> set;
804 if (flagSet.contains(AccessFlag.INTERFACE)) {
805 set = EnumSet.copyOf(flagSet);
806 set.remove(AccessFlag.ABSTRACT);
807 } else {
808 set = flagSet;
809 }
810 return getModifiers(set);
811 }
812
813 private static Set<String> getModifiers(Set<AccessFlag> flags) {
814 Set<String> s = new LinkedHashSet<>();
815 for (var f : flags)
816 if (f.sourceModifier()) s.add(f == AccessFlag.STRICT ? "strictfp" : f.name().toLowerCase(Locale.ROOT));
817 return s;
818 }
819
820 private Set<String> getClassFlags(AccessFlags flags) {
821 return getFlags(flags.flagsMask(), flagsReportUnknown(flags, cffv()));
822 }
823
824 private static Set<String> getFlags(int mask, Set<AccessFlag> flags) {
825 Set<String> s = new LinkedHashSet<>();
826 for (var f: flags) {
827 s.add("ACC_" + f.name());
828 mask = mask & ~f.mask();
829 }
830 while (mask != 0) {
831 int bit = Integer.highestOneBit(mask);
832 s.add("0x" + Integer.toHexString(bit));
|
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package com.sun.tools.javap;
27
28 import com.sun.tools.javac.code.Source;
29
30 import java.lang.classfile.AccessFlags;
31 import java.lang.classfile.Attributes;
32 import java.lang.classfile.ClassFile;
33 import java.lang.classfile.ClassHierarchyResolver;
34 import java.lang.classfile.ClassModel;
35 import java.lang.classfile.ClassSignature;
36 import java.lang.classfile.FieldModel;
37 import java.lang.classfile.MethodModel;
38 import java.lang.classfile.MethodSignature;
39 import java.lang.classfile.Signature;
40 import java.lang.classfile.attribute.CodeAttribute;
41 import java.lang.classfile.attribute.SignatureAttribute;
42 import java.lang.classfile.constantpool.ClassEntry;
43 import java.lang.classfile.constantpool.ConstantValueEntry;
44 import java.lang.classfile.constantpool.PoolEntry;
45 import java.lang.constant.ClassDesc;
46 import java.lang.reflect.AccessFlag;
47 import java.lang.reflect.ClassFileFormatVersion;
48 import java.lang.reflect.Modifier;
49 import java.net.URI;
107 }
108
109 protected void setClassFile(ClassModel cm) {
110 classModel = cm;
111 }
112
113 protected MethodModel getMethod() {
114 return method;
115 }
116
117 protected void setMethod(MethodModel m) {
118 method = m;
119 }
120
121 protected ClassFileFormatVersion cffv() {
122 var major = classModel.majorVersion();
123 if (major < JAVA_1_VERSION || major > ClassFile.latestMajorVersion())
124 // something not representable by CFFV, let's fall back
125 return ClassFileFormatVersion.latest();
126 if (major >= JAVA_12_VERSION && classModel.minorVersion() != 0) {
127 return null;
128 }
129 return ClassFileFormatVersion.fromMajor(major);
130 }
131
132 public boolean write(ClassModel cm) {
133 errorReported = false;
134 setClassFile(cm);
135
136 if (options.sysInfo || options.verbose) {
137 if (uri != null) {
138 if (uri.getScheme().equals("file"))
139 println("Classfile " + uri.getPath());
140 else
141 println("Classfile " + uri);
142 }
143 indent(+1);
144 if (lastModified != -1) {
145 Date lm = new Date(lastModified);
146 DateFormat df = DateFormat.getDateInstance();
147 if (size > 0) {
151 println("Last modified " + df.format(lm));
152 }
153 } else if (size > 0) {
154 println("Size " + size + " bytes");
155 }
156 if (digestName != null && digest != null) {
157 StringBuilder sb = new StringBuilder();
158 for (byte b: digest)
159 sb.append(String.format("%02x", b));
160 println(digestName + " checksum " + sb);
161 }
162 }
163
164 cm.findAttribute(Attributes.sourceFile()).ifPresent(sfa ->
165 println("Compiled from \"" + sfa.sourceFile().stringValue() + "\""));
166
167 if (options.sysInfo || options.verbose) {
168 indent(-1);
169 }
170
171 writeModifiers(getClassModifiers(cm.flags(), classModel.majorVersion(), classModel.minorVersion()));
172
173 if ((classModel.flags().flagsMask() & ACC_MODULE) != 0) {
174 var attr = classModel.findAttribute(Attributes.module());
175 if (attr.isPresent()) {
176 var modAttr = attr.get();
177 if ((modAttr.moduleFlagsMask() & ACC_OPEN) != 0) {
178 print("open ");
179 }
180 print("module ");
181 print(() -> modAttr.moduleName().name().stringValue());
182 if (modAttr.moduleVersion().isPresent()) {
183 print("@");
184 print(() -> modAttr.moduleVersion().get().stringValue());
185 }
186 } else {
187 // fallback for malformed class files
188 print("class ");
189 print(() -> getJavaName(classModel.thisClass().asInternalName()));
190 }
191 } else {
794 case '\r': return "\\r";
795 case '\\': return "\\\\";
796 case '\'': return "\\'";
797 case '\"': return "\\\"";
798 default: return String.format("\\u%04x", (int) c);
799 }
800 }
801
802 private Set<String> getClassModifiers(AccessFlags flags) {
803 var flagSet = flagsReportUnknown(flags, cffv());
804 Set<AccessFlag> set;
805 if (flagSet.contains(AccessFlag.INTERFACE)) {
806 set = EnumSet.copyOf(flagSet);
807 set.remove(AccessFlag.ABSTRACT);
808 } else {
809 set = flagSet;
810 }
811 return getModifiers(set);
812 }
813
814 private Set<String> getClassModifiers(AccessFlags flags, int majorVersion, int minorVersion) {
815 boolean previewClassFile = minorVersion == ClassFile.PREVIEW_MINOR_VERSION;
816 Set<AccessFlag> flagSet = flagsReportUnknown(flags, cffv());
817 if (flagSet.contains(AccessFlag.INTERFACE)) {
818 flagSet = EnumSet.copyOf(flagSet);
819 flagSet.remove(AccessFlag.ABSTRACT);
820 } else if (Source.isSupported(Source.Feature.VALUE_CLASSES, majorVersion) && previewClassFile) {
821 Set<String> classModifers = getModifiers(flagSet);
822 if (!flagSet.contains(AccessFlag.IDENTITY)) {
823 classModifers.add("value");
824 }
825 return classModifers;
826 }
827 return getModifiers(flagSet);
828 }
829
830 private static Set<String> getModifiers(Set<AccessFlag> flags) {
831 Set<String> s = new LinkedHashSet<>();
832 for (var f : flags)
833 if (f.sourceModifier()) s.add(f == AccessFlag.STRICT ? "strictfp" : f.name().toLowerCase(Locale.ROOT));
834 return s;
835 }
836
837 private Set<String> getClassFlags(AccessFlags flags) {
838 return getFlags(flags.flagsMask(), flagsReportUnknown(flags, cffv()));
839 }
840
841 private static Set<String> getFlags(int mask, Set<AccessFlag> flags) {
842 Set<String> s = new LinkedHashSet<>();
843 for (var f: flags) {
844 s.add("ACC_" + f.name());
845 mask = mask & ~f.mask();
846 }
847 while (mask != 0) {
848 int bit = Integer.highestOneBit(mask);
849 s.add("0x" + Integer.toHexString(bit));
|