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;
104 }
105
106 protected void setClassFile(ClassModel cm) {
107 classModel = cm;
108 }
109
110 protected MethodModel getMethod() {
111 return method;
112 }
113
114 protected void setMethod(MethodModel m) {
115 method = m;
116 }
117
118 protected ClassFileFormatVersion cffv() {
119 var major = classModel.majorVersion();
120 if (major < JAVA_1_VERSION || major > ClassFile.latestMajorVersion())
121 // something not representable by CFFV, let's fall back
122 return ClassFileFormatVersion.latest();
123 if (major >= JAVA_12_VERSION && classModel.minorVersion() != 0) {
124 // preview versions aren't explicitly supported, but latest is good enough for now
125 return ClassFileFormatVersion.latest();
126 }
127 return ClassFileFormatVersion.fromMajor(major);
128 }
129
130 public boolean write(ClassModel cm) {
131 errorReported = false;
132 setClassFile(cm);
133
134 if (options.sysInfo || options.verbose) {
135 if (uri != null) {
136 if (uri.getScheme().equals("file"))
137 println("Classfile " + uri.getPath());
138 else
139 println("Classfile " + uri);
140 }
141 indent(+1);
142 if (lastModified != -1) {
143 Date lm = new Date(lastModified);
144 DateFormat df = DateFormat.getDateInstance();
145 if (size > 0) {
149 println("Last modified " + df.format(lm));
150 }
151 } else if (size > 0) {
152 println("Size " + size + " bytes");
153 }
154 if (digestName != null && digest != null) {
155 StringBuilder sb = new StringBuilder();
156 for (byte b: digest)
157 sb.append(String.format("%02x", b));
158 println(digestName + " checksum " + sb);
159 }
160 }
161
162 cm.findAttribute(Attributes.sourceFile()).ifPresent(sfa ->
163 println("Compiled from \"" + sfa.sourceFile().stringValue() + "\""));
164
165 if (options.sysInfo || options.verbose) {
166 indent(-1);
167 }
168
169 writeModifiers(getClassModifiers(cm.flags()));
170
171 if ((classModel.flags().flagsMask() & ACC_MODULE) != 0) {
172 var attr = classModel.findAttribute(Attributes.module());
173 if (attr.isPresent()) {
174 var modAttr = attr.get();
175 if ((modAttr.moduleFlagsMask() & ACC_OPEN) != 0) {
176 print("open ");
177 }
178 print("module ");
179 print(() -> modAttr.moduleName().name().stringValue());
180 if (modAttr.moduleVersion().isPresent()) {
181 print("@");
182 print(() -> modAttr.moduleVersion().get().stringValue());
183 }
184 } else {
185 // fallback for malformed class files
186 print("class ");
187 print(() -> getJavaName(classModel.thisClass().asInternalName()));
188 }
189 } else {
795 case '\r': return "\\r";
796 case '\\': return "\\\\";
797 case '\'': return "\\'";
798 case '\"': return "\\\"";
799 default: return String.format("\\u%04x", (int) c);
800 }
801 }
802
803 private Set<String> getClassModifiers(AccessFlags flags) {
804 var flagSet = flagsReportUnknown(flags, cffv());
805 Set<AccessFlag> set;
806 if (flagSet.contains(AccessFlag.INTERFACE)) {
807 set = EnumSet.copyOf(flagSet);
808 set.remove(AccessFlag.ABSTRACT);
809 } else {
810 set = flagSet;
811 }
812 return getModifiers(set);
813 }
814
815 private static Set<String> getModifiers(Set<AccessFlag> flags) {
816 Set<String> s = new LinkedHashSet<>();
817 for (var f : flags)
818 if (f.sourceModifier()) s.add(Modifier.toString(f.mask()));
819 return s;
820 }
821
822 private Set<String> getClassFlags(AccessFlags flags) {
823 return getFlags(flags.flagsMask(), flagsReportUnknown(flags, cffv()));
824 }
825
826 private static Set<String> getFlags(int mask, Set<AccessFlag> flags) {
827 Set<String> s = new LinkedHashSet<>();
828 for (var f: flags) {
829 s.add("ACC_" + f.name());
830 mask = mask & ~f.mask();
831 }
832 while (mask != 0) {
833 int bit = Integer.highestOneBit(mask);
834 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;
106 }
107
108 protected void setClassFile(ClassModel cm) {
109 classModel = cm;
110 }
111
112 protected MethodModel getMethod() {
113 return method;
114 }
115
116 protected void setMethod(MethodModel m) {
117 method = m;
118 }
119
120 protected ClassFileFormatVersion cffv() {
121 var major = classModel.majorVersion();
122 if (major < JAVA_1_VERSION || major > ClassFile.latestMajorVersion())
123 // something not representable by CFFV, let's fall back
124 return ClassFileFormatVersion.latest();
125 if (major >= JAVA_12_VERSION && classModel.minorVersion() != 0) {
126 return ClassFileFormatVersion.CURRENT_PREVIEW_FEATURES;
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(), classModel.majorVersion(), classModel.minorVersion()));
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 {
796 case '\r': return "\\r";
797 case '\\': return "\\\\";
798 case '\'': return "\\'";
799 case '\"': return "\\\"";
800 default: return String.format("\\u%04x", (int) c);
801 }
802 }
803
804 private Set<String> getClassModifiers(AccessFlags flags) {
805 var flagSet = flagsReportUnknown(flags, cffv());
806 Set<AccessFlag> set;
807 if (flagSet.contains(AccessFlag.INTERFACE)) {
808 set = EnumSet.copyOf(flagSet);
809 set.remove(AccessFlag.ABSTRACT);
810 } else {
811 set = flagSet;
812 }
813 return getModifiers(set);
814 }
815
816 private Set<String> getClassModifiers(AccessFlags flags, int majorVersion, int minorVersion) {
817 boolean previewClassFile = minorVersion == ClassFile.PREVIEW_MINOR_VERSION;
818 Set<AccessFlag> flagSet = flagsReportUnknown(flags, cffv());
819 if (flagSet.contains(AccessFlag.INTERFACE)) {
820 flagSet = EnumSet.copyOf(flagSet);
821 flagSet.remove(AccessFlag.ABSTRACT);
822 } else if (Source.isSupported(Source.Feature.VALUE_CLASSES, majorVersion) && previewClassFile) {
823 Set<String> classModifers = getModifiers(flagSet);
824 classModifers.add("value");
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(Modifier.toString(f.mask()));
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));
|