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gousiosggousiosg
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Remove asm, import bcel, call graph produced from static referenced
class
1 parent fa79212 commit f3ad01c

5 files changed

Lines changed: 153 additions & 56 deletions

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‎pom.xml‎

Lines changed: 3 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -23,9 +23,9 @@
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<scope>compile</scope>
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</dependency>
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<dependency>
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<groupId>asm</groupId>
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<artifactId>asm-all</artifactId>
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<version>3.3</version>
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<groupId>org.apache.bcel</groupId>
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<artifactId>bcel</artifactId>
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<version>5.2</version>
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<type>jar</type>
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<scope>compile</scope>
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</dependency>

‎src/main/java/gr/gousiosg/callgraph/ClassPrinter.java‎

Lines changed: 0 additions & 47 deletions
This file was deleted.

‎src/main/java/gr/gousiosg/callgraph/ClassVisitor.java‎

Lines changed: 34 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,34 @@
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package gr.gousiosg.callgraph;
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import org.apache.bcel.classfile.EmptyVisitor;
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import org.apache.bcel.classfile.JavaClass;
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import org.apache.bcel.classfile.Method;
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import org.apache.bcel.generic.ConstantPoolGen;
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import org.apache.bcel.generic.MethodGen;
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public class ClassVisitor extends EmptyVisitor {
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JavaClass visitedClass;
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private ConstantPoolGen cp;
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public ClassVisitor(JavaClass jc) {
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visitedClass = jc;
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cp = new ConstantPoolGen(visitedClass.getConstantPool());
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}
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public void visitJavaClass(JavaClass jc) {
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Method[] methods = jc.getMethods();
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for (int i = 0; i < methods.length; i++)
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methods[i].accept(this);
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}
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public void visitMethod(Method method) {
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MethodGen mg = new MethodGen(method, visitedClass.getClassName(), cp);
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MethodVisitor visitor = new MethodVisitor(mg, visitedClass);
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visitor.start();
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}
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public void start() {
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visitJavaClass(visitedClass);
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}
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}

‎src/main/java/gr/gousiosg/callgraph/JCallGraph.java‎

Lines changed: 9 additions & 6 deletions
Original file line numberDiff line numberDiff line change
@@ -3,7 +3,8 @@
33

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import java.io.IOException;
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6-
import org.objectweb.asm.ClassReader;
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import org.apache.bcel.classfile.ClassParser;
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78

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/**
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* Constructs a callgraph out of a JAR archive. Can combine multiple archives
@@ -15,12 +16,14 @@
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public class JCallGraph {
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public static void main(String[] args) {
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ClassParser cp;
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try {
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ClassPrinter cp = new ClassPrinter();
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ClassReader cr = new ClassReader("java.lang.Thread");
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cr.accept(cp, 0);
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cp = new ClassParser("/Volumes/Files/Developer/java-callgraph/target/classes/gr/gousiosg/callgraph/ClassVisitor.class");
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ClassVisitor visitor = new ClassVisitor(cp.parse());
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visitor.start();
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} catch (IOException e) {
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// TODO Auto-generated catch block
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e.printStackTrace();
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}
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}
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}
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}

‎src/main/java/gr/gousiosg/callgraph/MethodVisitor.java‎

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@@ -0,0 +1,107 @@
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package gr.gousiosg.callgraph;
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import org.apache.bcel.classfile.JavaClass;
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import org.apache.bcel.generic.ArrayInstruction;
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import org.apache.bcel.generic.CHECKCAST;
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import org.apache.bcel.generic.CodeExceptionGen;
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import org.apache.bcel.generic.ConstantPoolGen;
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import org.apache.bcel.generic.ConstantPushInstruction;
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import org.apache.bcel.generic.EmptyVisitor;
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import org.apache.bcel.generic.FieldInstruction;
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import org.apache.bcel.generic.INSTANCEOF;
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import org.apache.bcel.generic.Instruction;
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import org.apache.bcel.generic.InstructionConstants;
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import org.apache.bcel.generic.InstructionHandle;
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import org.apache.bcel.generic.InvokeInstruction;
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import org.apache.bcel.generic.LocalVariableInstruction;
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import org.apache.bcel.generic.MethodGen;
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import org.apache.bcel.generic.ReturnInstruction;
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import org.apache.bcel.generic.Type;
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public class MethodVisitor extends EmptyVisitor {
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JavaClass visitedClass;
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private MethodGen mg;
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private ConstantPoolGen cp;
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public MethodVisitor(MethodGen m, JavaClass jc) {
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visitedClass = jc;
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mg = m;
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cp = mg.getConstantPool();
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}
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public void start() {
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if (!mg.isAbstract() && !mg.isNative()) {
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for (InstructionHandle ih = mg.getInstructionList().getStart(); ih != null; ih = ih.getNext()) {
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Instruction i = ih.getInstruction();
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if (!visitInstruction(i))
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i.accept(this);
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}
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updateExceptionHandlers();
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}
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}
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/** Visit a single instruction. */
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private boolean visitInstruction(Instruction i) {
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short opcode = i.getOpcode();
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return ((InstructionConstants.INSTRUCTIONS[opcode] != null)
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&& !(i instanceof ConstantPushInstruction) && !(i instanceof ReturnInstruction));
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}
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/** Local variable use. */
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public void visitLocalVariableInstruction(LocalVariableInstruction i) {
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//if (i.getOpcode() != Constants.IINC)
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//cv.registerCoupling(i.getType(cp));
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}
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/** Array use. */
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public void visitArrayInstruction(ArrayInstruction i) {
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//cv.registerCoupling(i.getType(cp));
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}
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/** Field access. */
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public void visitFieldInstruction(FieldInstruction i) {
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//cv.registerFieldAccess(i.getClassName(cp), i.getFieldName(cp));
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//cv.registerCoupling(i.getFieldType(cp));
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}
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/** Method invocation. */
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public void visitInvokeInstruction(InvokeInstruction i) {
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System.out.println(visitedClass.getClassName() + ":" + mg.getName() + "->" + i.getReferenceType(cp) + ":"+ i.getMethodName(cp));
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//Type[] argTypes = i.getArgumentTypes(cp);
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//for (int j = 0; j < argTypes.length; j++)
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// cv.registerCoupling(argTypes[j]);
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//cv.registerCoupling(i.getReturnType(cp));
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/* Measuring decision: measure overloaded methods separately */
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//cv.registerMethodInvocation(i.getClassName(cp), i.getMethodName(cp),
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// argTypes);
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}
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/** Visit an instanceof instruction. */
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public void visitINSTANCEOF(INSTANCEOF i) {
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}
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/** Visit checklast instruction. */
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public void visitCHECKCAST(CHECKCAST i) {
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}
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/** Visit return instruction. */
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public void visitReturnInstruction(ReturnInstruction i) {
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}
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/** Visit the method's exception handlers. */
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private void updateExceptionHandlers() {
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CodeExceptionGen[] handlers = mg.getExceptionHandlers();
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/* Measuring decision: couple exceptions */
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for (int i = 0; i < handlers.length; i++) {
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Type t = handlers[i].getCatchType();
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//if (t != null)
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//cv.registerCoupling(t);
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}
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}
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}

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