Package org.apache.bcel.generic

Examples of org.apache.bcel.generic.ClassGen

104
105
106
107
108
109
110
111
112
113
114
     *  
   * @param method
   */
  private void synchronizedMethod(Method method) {
    if (theClassGen==null) {
      theClassGen = new ClassGen(jc);
      theCPool = theClassGen.getConstantPool();
    }

    Verbose.println("  PREPROCESSING synchronized: "+jc.getClassName()+"."+method.getName()+method.getSignature());
   
View Full Code Here
80
81
82
83
84
85
86
     * @throws IOException
     * @throws ClassFormatException
     */
    public static ClassGen fromByte(final byte[] bytecode) throws IOException, ClassFormatException {
        ClassParser parser = new ClassParser(new ByteArrayInputStream(bytecode), "<generated>");
        return new ClassGen(parser.parse());
    }
View Full Code Here
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
     * @param klass the unextendable class set
     */
    public void transformInterface(final Context context, final Klass klass) {
        if (ADD_UUID == null) return; // do not do any transformations

        final ClassGen cg = klass.getClassGen();
        final ConstantPoolGen cpg = cg.getConstantPool();
        final InstructionFactory factory = new InstructionFactory(cg);

        if (classFilter(cg)) {
            return;
        }
        if (m_hasBeenTransformed.contains(cg.getClassName())) {
            return;
        }

        // mark the class as transformed
        m_hasBeenTransformed.add(cg.getClassName());

        addIdentifiableInterface(cg, cpg);
        addUuidField(cg);
        addUuidGetterMethod(cg, cpg, factory);
    }
View Full Code Here
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
     * @param klass the class.
     */
    public void transformCode(final Context context, final Klass klass) {
        if (ADD_UUID == null) return; // do not do any transformations

        final ClassGen cg = klass.getClassGen();
        if (classFilter(cg)) {
            return;
        }
        if (cg.containsField(TransformationUtil.UUID_FIELD) == null) {
            return;
        }

        final InstructionFactory factory = new InstructionFactory(cg);
        final ConstantPoolGen cpg = cg.getConstantPool();
        final Method[] methods = cg.getMethods();

        // get the indexes for the <init> methods
        List initIndexes = new ArrayList();
        for (int i = 0; i < methods.length; i++) {
            if (methods[i].getName().equals("<init>")) {
                initIndexes.add(new Integer(i));
            }
        }

        // advise all the constructors
        for (Iterator it = initIndexes.iterator(); it.hasNext();) {
            final int initIndex = ((Integer)it.next()).intValue();

            methods[initIndex] = createUuidField(
                    cpg, cg,
                    methods[initIndex],
                    factory).getMethod();
        }

        // update the old methods
        cg.setMethods(methods);
    }
View Full Code Here
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
     * @param context the transformation context
     * @param klass the class set.
     */
    public void transformCode(final Context context, final Klass klass) {

        final ClassGen cg = klass.getClassGen();
        ClassMetaData classMetaData = BcelMetaDataMaker.
                createClassMetaData(context.getJavaClass(cg));

        if (classFilter(classMetaData, cg)) {
            return;
        }

        final InstructionFactory factory = new InstructionFactory(cg);
        final ConstantPoolGen cpg = cg.getConstantPool();
        final Method[] methods = cg.getMethods();

        // get the index for the <clinit> method (if there is one)
        boolean noClinitMethod = true;
        int indexClinit = -1;
        for (int i = 0; i < methods.length; i++) {
            if (methods[i].getName().equals("<clinit>")) {
                indexClinit = i;
                noClinitMethod = false;
                break;
            }
        }

        // build and sort the method lookup list
        final List methodLookupList = new ArrayList();
        for (int i = 0; i < methods.length; i++) {
            MethodMetaData methodMetaData = BcelMetaDataMaker.createMethodMetaData(methods[i]);
            if (methodFilter(classMetaData, methodMetaData, methods[i]) == null) {
                continue;
            }
            methodLookupList.add(methods[i]);
        }
        Collections.sort(methodLookupList, BCELMethodComparator.getInstance());

        final Map methodSequences = new HashMap();
        final List newMethods = new ArrayList();
        Method clInitMethod = null;
        for (int i = 0; i < methods.length; i++) {

            MethodMetaData methodMetaData = BcelMetaDataMaker.createMethodMetaData(methods[i]);

            String uuid = methodFilter(classMetaData, methodMetaData, methods[i]);
            if (!methods[i].isStatic() || uuid == null) {
                continue;
            }

            final MethodGen mg = new MethodGen(methods[i], cg.getClassName(), cpg);

            // take care of identification of overloaded methods by
            // inserting a sequence number
            if (methodSequences.containsKey(methods[i].getName())) {
                int sequence = ((Integer)methodSequences.get(methods[i].getName())).intValue();
                methodSequences.remove(methods[i].getName());
                sequence++;
                methodSequences.put(methods[i].getName(), new Integer(sequence));
            }
            else {
                methodSequences.put(methods[i].getName(), new Integer(1));
            }

            final int methodLookupId = methodLookupList.indexOf(methods[i]);
            final int methodSequence =
                    ((Integer)methodSequences.get(methods[i].getName())).intValue();

            addStaticJoinPointField(cpg, cg, mg, methodSequence);

            // get the join point controller
            final String controllerClassName =
                    m_definition.getJoinPointController(classMetaData, methodMetaData);

            if (noClinitMethod) {
                // no <clinit> method exists
                if (clInitMethod == null) {
                    clInitMethod = createClInitMethodWithStaticJoinPointField(
                            cpg, cg,
                            methods[i],
                            factory,
                            methodSequence
                    );
                }
                else {
                    clInitMethod = createStaticJoinPointField(
                            cpg, cg, clInitMethod,
                            methods[i],
                            factory,
                            methodSequence
                    );
                }
            }
            else {
                // we have a <clinit> method
                methods[indexClinit] = createStaticJoinPointField(
                        cpg, cg, methods[indexClinit],
                        methods[i],
                        factory,
                        methodSequence
                );
            }

            // create a proxy method for the original method
            newMethods.add(createProxyMethod(
                    cpg, cg, mg,
                    factory,
                    methodLookupId,
                    methodSequence,
                    methods[i].getAccessFlags(),
                    uuid,
                    controllerClassName
            ));

            // add a prefix to the original method
            methods[i] = addPrefixToMethod(mg, methods[i], methodSequence);

            mg.setMaxLocals();
            mg.setMaxStack();
        }

        // if we have transformed methods, create the static class field
        if (noClinitMethod && clInitMethod != null) {
            addStaticClassField(cpg, cg);
            clInitMethod = createStaticClassField(cpg, cg, clInitMethod, factory);

            newMethods.add(clInitMethod);
        }
        else if (newMethods.size() != 0) {
            addStaticClassField(cpg, cg);
            methods[indexClinit] = createStaticClassField(cpg, cg, methods[indexClinit], factory);
        }

        // update the old methods
        cg.setMethods(methods);

        // add the new methods
        for (Iterator it = newMethods.iterator(); it.hasNext();) {
            Method method = (Method)it.next();
            cg.addMethod(method);
        }
    }
View Full Code Here
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
     * @param klass the class
     */
    public void transformInterface(final Context context, final Klass klass) {
        if (ADD_METADATA == null) return; // do not do any transformations

        final ClassGen cg = klass.getClassGen();
        final ConstantPoolGen cpg = cg.getConstantPool();
        final InstructionFactory factory = new InstructionFactory(cg);

        if (classFilter(cg)) {
            return;
        }
        if (m_hasBeenTransformed.contains(cg.getClassName())) {
            return;
        }

        // mark the class as transformed
        m_hasBeenTransformed.add(cg.getClassName());

        addMetaDataEnhancableInterface(cg, cpg);
        addMapField(cg);
        addMetaDataGetterMethod(cg, cpg, factory);
        addMetaDataSetterMethod(cg, cpg, factory);
View Full Code Here
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
     * @param klass the class
     */
    public void transformCode(final Context context, final Klass klass) {
        if (ADD_METADATA == null) return; // do not do any transformations

        final ClassGen cg = klass.getClassGen();
        if (classFilter(cg)) {
            return;
        }
        if (cg.containsField(TransformationUtil.META_DATA_FIELD) == null) {
            return;
        }

        final InstructionFactory factory = new InstructionFactory(cg);
        final ConstantPoolGen cpg = cg.getConstantPool();
        final Method[] methods = cg.getMethods();

        // get the indexes for the <init> methods
        List initIndexes = new ArrayList();
        for (int i = 0; i < methods.length; i++) {
            if (methods[i].getName().equals("<init>")) {
                initIndexes.add(new Integer(i));
            }
        }

        // advise all the constructors
        for (Iterator it = initIndexes.iterator(); it.hasNext();) {
            final int initIndex = ((Integer)it.next()).intValue();

            methods[initIndex] = createMetaDataField(
                    cpg, cg,
                    methods[initIndex],
                    factory).getMethod();
        }

        // update the old methods
        cg.setMethods(methods);
    }
View Full Code Here
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
     * @param context the transformation context
     * @param klass the class set.
     */
    public void transformCode(final Context context, final Klass klass) {

        final ClassGen cg = klass.getClassGen();
        ClassMetaData classMetaData = BcelMetaDataMaker.createClassMetaData(context.getJavaClass(cg));

        if (classFilter(classMetaData, cg)) {
            return;
        }

        final InstructionFactory factory = new InstructionFactory(cg);
        final ConstantPoolGen cpg = cg.getConstantPool();
        final Method[] methods = cg.getMethods();

        // get the indexes for the <init> methods
        List initIndexes = new ArrayList();
        for (int i = 0; i < methods.length; i++) {
            if (methods[i].getName().equals("<init>")) {
                initIndexes.add(new Integer(i));
            }
        }

        // build and sort the method lookup list
        final List methodLookupList = new ArrayList();
        for (int i = 0; i < methods.length; i++) {
            if (methodFilter(classMetaData, methods[i]) == null) {
                continue;
            }
            methodLookupList.add(methods[i]);
        }

        Collections.sort(methodLookupList, BCELMethodComparator.getInstance());

        final Map methodSequences = new HashMap();
        final List proxyMethods = new ArrayList();
        for (int i = 0; i < methods.length; i++) {

            // filter the methods
            String uuid = methodFilter(classMetaData, methods[i]);
            if (methods[i].isStatic() || uuid == null) {
                continue;
            }

            final MethodGen mg = new MethodGen(methods[i], cg.getClassName(), cpg);

            // take care of identification of overloaded methods by inserting a sequence number
            if (methodSequences.containsKey(methods[i].getName())) {
                int sequence = ((Integer)methodSequences.get(methods[i].getName())).intValue();
                methodSequences.remove(methods[i].getName());
                sequence++;
                methodSequences.put(methods[i].getName(), new Integer(sequence));
            }
            else {
                methodSequences.put(methods[i].getName(), new Integer(1));
            }

            final int methodLookupId = methodLookupList.indexOf(methods[i]);
            final int methodSequence = ((Integer)methodSequences.
                    get(methods[i].getName())).intValue();

            //handleCallToOverriddenSuperClassMethod(mg, cg, cpg, factory, methodSequence, context);

            addJoinPointField(cpg, cg, mg, methodSequence);

            // get the join point controller
            MethodMetaData methodMetaData = BcelMetaDataMaker.createMethodMetaData(methods[i]);

            final String controllerClassName =
                    m_definition.getJoinPointController(classMetaData, methodMetaData);

            // advise all the constructors
            for (Iterator it = initIndexes.iterator(); it.hasNext();) {
                final int initIndex = ((Integer)it.next()).intValue();

                methods[initIndex] = createJoinPointField(
                        cpg, cg,
                        methods[initIndex],
                        methods[i],
                        factory,
                        methodSequence
                ).getMethod();
            }

            proxyMethods.add(createProxyMethod(
                    cpg, cg, mg,
                    factory,
                    methodLookupId,
                    methodSequence,
                    methods[i].getAccessFlags(),
                    uuid,
                    controllerClassName
            ));

            methods[i] = addPrefixToMethod(mg, methods[i], methodSequence);

            mg.setMaxStack();
        }

        // update the old methods
        cg.setMethods(methods);

        // add the proxy methods
        for (Iterator it = proxyMethods.iterator(); it.hasNext();) {
            Method method = (Method)it.next();
            cg.addMethod(method);
        }
    }
View Full Code Here
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
     * @param context the transformation context
     * @param klass the class set.
     */
    public void transformCode(final Context context, final Klass klass) {

        final ClassGen cg = klass.getClassGen();
        ClassMetaData classMetaData = BcelMetaDataMaker.
                createClassMetaData(context.getJavaClass(cg));

        if (classFilter(classMetaData, cg)) {
            return;
        }

        Method[] methods = cg.getMethods();

        // get the index for the <clinit> method (if there is one)
        boolean noClInitMethod = true;
        int clinitIndex = -1;
        for (int i = 0; i < methods.length; i++) {
            if (methods[i].getName().equals("<clinit>")) {
                clinitIndex = i;
                noClInitMethod = false;
                break;
            }
        }
        ConstantPoolGen cpg = cg.getConstantPool();
        String className = cg.getClassName();
        InstructionFactory factory = new InstructionFactory(cg);

        final Set setFieldJoinPoints = new HashSet();
        final Set getFieldJoinPoints = new HashSet();

        Method clInitMethod = null;
        List newMethods = new ArrayList();
        boolean isClassAdvised = false;
        for (int i = 0; i < methods.length; i++) {

            if (methodFilter(methods[i])) {
                continue;
            }

            MethodGen mg = new MethodGen(methods[i], className, cpg);

            InstructionList il = mg.getInstructionList();
            InstructionHandle ih = il.getStart();

            // search for all GETFIELD and GETSTATIC instructions and
            // inserts the pre and post advices
            while (ih != null) {
                Instruction ins = ih.getInstruction();

                if (ins instanceof GETFIELD || ins instanceof GETSTATIC) {
                    FieldInstruction gfIns = (FieldInstruction)ins;

                    String fieldName = gfIns.getName(cpg);
                    String signature = gfIns.getFieldType(cpg).toString() + " " + fieldName;
                    Type joinPointType = TransformationUtil.STATIC_FIELD_GET_JOIN_POINT_TYPE;
                    String joinPointClass = TransformationUtil.STATIC_FIELD_GET_JOIN_POINT_CLASS;

                    FieldMetaData fieldMetaData =
                            BcelMetaDataMaker.createFieldMetaData(gfIns, cpg);

                    String uuid = getFieldFilter(classMetaData, fieldMetaData);
                    if (uuid != null) {

                        String fieldClassName = gfIns.getClassName(cpg);
                        if (fieldClassName.equals(cg.getClassName())) {
                            isClassAdvised = true;

                            // in static context
                            if (mg.isStatic()) {
                                insertPreAdvice(il, ih, cg, fieldName, factory, joinPointType);
                                insertPostAdvice(il, ih.getNext(), cg, fieldName, factory, joinPointType);

                                // skip the creation of the join point if we
                                // already have one
                                if (!getFieldJoinPoints.contains(fieldName)) {
                                    getFieldJoinPoints.add(fieldName);

                                    addStaticJoinPointField(cpg, cg, fieldName, joinPointType);

                                    if (noClInitMethod) {
                                        clInitMethod = createClInitMethodWithStaticJoinPointField(
                                                cpg, cg, fieldName, signature, factory,
                                                joinPointType, joinPointClass, uuid);
                                    }
                                    else {
                                        methods[clinitIndex] = createStaticJoinPointField(
                                                cpg, cg, methods[clinitIndex], fieldName, signature,
                                                factory, joinPointType, joinPointClass, uuid);
                                    }
                                }
                            }
                        }
                    }
                }
                else if (ins instanceof PUTFIELD || ins instanceof PUTSTATIC) {
                    FieldInstruction pfIns = (FieldInstruction)ins;

                    String fieldName = pfIns.getName(cpg);
                    String signature = pfIns.getFieldType(cpg).toString() + " " + fieldName;
                    Type joinPointType = TransformationUtil.STATIC_FIELD_SET_JOIN_POINT_TYPE;
                    String joinPointClass = TransformationUtil.STATIC_FIELD_SET_JOIN_POINT_CLASS;

                    FieldMetaData fieldMetaData =
                            BcelMetaDataMaker.createFieldMetaData(pfIns, cpg);

                    String uuid = setFieldFilter(classMetaData, fieldMetaData);
                    if (uuid != null) {

                        String fieldClassName = pfIns.getClassName(cpg);
                        if (fieldClassName.equals(cg.getClassName())) {

                            // in static context
                            if (mg.isStatic()) {
                                isClassAdvised = true;

                                insertPreAdvice(il, ih, cg, fieldName, factory, joinPointType);
                                insertPostAdvice(il, ih.getNext(), cg, fieldName, factory, joinPointType);

                                // skip the creation of the join point if we
                                // already have one
                                if (!setFieldJoinPoints.contains(fieldName)) {
                                    setFieldJoinPoints.add(fieldName);

                                    addStaticJoinPointField(
                                            cpg, cg,
                                            fieldName,
                                            joinPointType);

                                    if (noClInitMethod) {
                                        clInitMethod = createClInitMethodWithStaticJoinPointField(
                                                cpg, cg, fieldName, signature, factory,
                                                joinPointType, joinPointClass, uuid);
                                    }
                                    else {
                                        methods[clinitIndex] = createStaticJoinPointField(
                                                cpg, cg, methods[clinitIndex], fieldName, signature,
                                                factory, joinPointType, joinPointClass, uuid);
                                    }
                                }
                            }
                        }
                    }
                }
                ih = ih.getNext();
            }

            if (isClassAdvised) {
                mg.setMaxStack();
                methods[i] = mg.getMethod();
            }
        }
        if (isClassAdvised) {
            // if we have transformed methods, create the static class field

            if (noClInitMethod && clInitMethod != null) {
                addStaticClassField(cpg, cg);
                clInitMethod = createStaticClassField(cpg, cg, clInitMethod, factory);
                newMethods.add(clInitMethod);
            }
            else if (!noClInitMethod) {
                addStaticClassField(cpg, cg);
                methods[clinitIndex] =
                        createStaticClassField(cpg, cg, methods[clinitIndex], factory);
            }
        }
        // update the old methods
        cg.setMethods(methods);

        // add the new methods
        for (Iterator it = newMethods.iterator(); it.hasNext();) {
            Method method = (Method)it.next();
            cg.addMethod(method);
        }
    }
View Full Code Here
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
     *
     * @param context the transformation context
     * @param klass the class
     */
    public void transformInterface(final Context context, final Klass klass) {
        final ClassGen cg = klass.getClassGen();
        if (classFilter(cg)) {
            return;
        }
        if (m_transformed.contains(cg.getClassName())) {
            return;
        }
        m_transformed.add(cg.getClassName());

        ConstantPoolGen cpg = cg.getConstantPool();
        int[] interfaces = cg.getInterfaces();

        for (Iterator it2 = m_definition.getIntroductionNames(
                cg.getClassName()).iterator(); it2.hasNext();) {

            String introductionName = (String)it2.next();
            String interfaceName = m_definition.getIntroductionInterfaceName(introductionName);

            boolean addInterface = true;

            for (int l = 0; l < interfaces.length; l++) {
                ConstantClass cc = (ConstantClass)cpg.getConstant(interfaces[l]);
                ConstantUtf8 cu = (ConstantUtf8)cpg.getConstant(cc.getNameIndex());

                if (implementsInterface(cu, interfaceName)) {
                    addInterface = false;
                    break;
                }
            }
            if (addInterface) {
                if (interfaceName == null || interfaceName.equals("")) {
                    throw new DefinitionException("trying to weave null interface to " + cg.getClassName() + ": definition file is not consistentadd");
                }
                TransformationUtil.addInterfaceToClass(cg, interfaceName);
            }
        }
    }
View Full Code Here
TOP

Related Classes of org.apache.bcel.generic.ClassGen

  • ariba.awreload.Factor
  • ariba.awreload.FactorNotUsed
  • ariba.util.fieldvalue.CompiledAccessorFactory
  • com.betfair.platform.ComplexObjectCreator
  • com.lambda.Debugger.InstrumentorForCL
  • de.petris.dynamicaspects.util.ClassPatcher
  • edu.umd.cs.findbugs.ba.BetterCFGBuilder2
  • edu.umd.cs.findbugs.classfile.engine.bcel.ConstantPoolGenFactory
  • haikuvm.pc.tools.Preprocess
  • HelloWorldBuilder
    • Copyright © 2018 www.massapicom. All rights reserved.
    All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.