buggy
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parent
d2d364bc71
commit
8395b10029
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@ -1,4 +1,3 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<project version="4">
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<component name="ASMPluginConfiguration">
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<asm skipDebug="false" skipFrames="false" skipCode="false" expandFrames="false" />
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@ -1,8 +1,14 @@
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package ch.usi.inf.sp.callgraph;
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import org.objectweb.asm.Opcodes;
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import java.io.FileWriter;
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import java.io.IOException;
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import java.io.PrintWriter;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.Map;
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import java.util.stream.Collectors;
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/**
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@ -13,28 +19,134 @@ import java.io.PrintWriter;
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*/
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public final class CallGraphRenderer {
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private static String nodeName(ClassType type) {
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return type.getInternalName().replaceAll("/", "_");
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private final Map<String, Integer> identifiers = new HashMap<>();
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private final Map<Integer, Boolean> nodeBuilt = new HashMap<>();
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private String identifier(String what, boolean fromNode) {
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return "node" + identifiers.computeIfAbsent(what, (k) -> {
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int key = identifiers.size() + 1;
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nodeBuilt.compute(key, (ke, v) -> v == null ? fromNode : (v || fromNode));
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return key;
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});
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}
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private static String nodeLabel(ClassType type) {
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final String name = type.getInternalName().replaceAll("/", ".");
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return name.substring(1, name.length() - 1);
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private String classNodeName(ClassType type) {
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return identifier(type.getInternalName(), true);
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}
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private static String methodDescription(Method e) {
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return (e.getVerboseModifiers() + " " +
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e.getName().replaceAll("<", "<").replaceAll(">", ">") +
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e.getDescriptor()).trim();
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}
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private static String classNodeDescriptor(ClassType type) {
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final String className = type.getInternalName();
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if (!type.isResolved()) {
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return "[shape=ellipse,style=dashed,label=\"" + className + "\"]";
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}
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final String methods = type.getMethods().stream()
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.map(CallGraphRenderer::methodDescription)
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.collect(Collectors.joining("\\n"));
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final String style = type.isAbstract() ? "dashed" : "solid";
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return "[shape=record,style=" + style + ",label=\"{" + className + "|" + methods + "}\"]";
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}
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private String methodNodeName(ClassHierarchy hierarchy, String className, String name, String descriptor, boolean fromNode) {
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try {
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if (!hierarchy.getOrCreateClass(className).isResolved()) {
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return identifier(className, true);
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}
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} catch (TypeInconsistencyException e) {
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throw new RuntimeException(e);
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}
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return identifier(className + " " + name + " " + descriptor, fromNode);
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}
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private static String methodNodeDescriptor(Method method) {
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return "[shape=rectangle,style=filled,fillcolor=lightgreen,label=\"" + method.getDeclaringClassName() +
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"\\n" + methodDescription(method) + "\"]";
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}
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private static String getEdge(String from, String to, int opCode, String color) {
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String style;
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switch (opCode) {
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case Opcodes.INVOKEVIRTUAL: style = "dashed"; break;
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case Opcodes.INVOKEINTERFACE: style = "dotted"; break;
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default: style = "solid";
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}
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return from + " -> " + to + " [style=" + style + ",color=" + color + "]";
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}
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public void dumpDot(final ClassHierarchy hierarchy, final String fileName) throws IOException {
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final PrintWriter pw = new PrintWriter(new FileWriter(fileName));
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pw.println("digraph CallGraph {");
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pw.println(" rankdir=\"BT\"");
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final ArrayList<String> edges = new ArrayList<>();
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for (final Type type : hierarchy.getTypes()) {
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if (type instanceof ClassType) {
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final ClassType classType = (ClassType) type;
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final ClassType superClassType = classType.getSuperClass();
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pw.println(nodeName(classType) + " [shape=record,label=\"" + nodeLabel(classType) + "\"];");
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pw.println(classNodeName(classType) + " " + classNodeDescriptor(classType) + ";");
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// TODO: implement this
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if (superClassType != null) {
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edges.add(getEdge(classNodeName(classType), classNodeName(superClassType), 0, "black"));
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}
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for (final ClassType c : classType.getInterfaces()) {
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edges.add(getEdge(classNodeName(classType), classNodeName(c), Opcodes.INVOKEVIRTUAL, "black"));
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}
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for (final Method m : classType.getMethods()) {
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final String mName = methodNodeName(hierarchy, m.getDeclaringClassName(), m.getName(), m.getDescriptor(), true);
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pw.println(mName + " " + methodNodeDescriptor(m) + ";");
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edges.add(getEdge(classNodeName(classType), mName, 0, "lightgreen"));
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for (final CallSite c : m.getCallSites()) {
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final String cName = methodNodeName(hierarchy,
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c.getDeclaredTargetClassName(),
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c.getTargetMethodName(),
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c.getTargetMethodDescriptor(), false);
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edges.add(getEdge(mName, cName, c.getOpcode(), "blue"));
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for (final ClassType p : c.getPossibleTargetClasses()) {
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final String pName = methodNodeName(hierarchy,
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p.getInternalName(),
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c.getTargetMethodName(),
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c.getTargetMethodDescriptor(), false);
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edges.add(getEdge(mName, pName, c.getOpcode(), "red"));
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}
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}
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}
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}
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}
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// Add missing node declarations (happens with methods in classes not scanned)
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final Map<Integer, String> reverseIdentifiers = identifiers.entrySet().stream()
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.collect(Collectors.toMap(Map.Entry::getValue, Map.Entry::getKey));
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for (Map.Entry<Integer, Boolean> e : nodeBuilt.entrySet()) {
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if (!e.getValue()) {
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pw.println("node" + e.getKey() + " [label=\"" + reverseIdentifiers.get(e.getKey()) + "\"]");
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}
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}
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pw.append('\n');
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for (final String edge : edges) {
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pw.println(edge);
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}
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pw.println("}");
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pw.close();
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}
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@ -2,6 +2,9 @@ package ch.usi.inf.sp.callgraph;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.Objects;
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import java.util.stream.Collectors;
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import java.util.stream.Stream;
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import org.objectweb.asm.Opcodes;
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@ -83,6 +86,16 @@ public final class Method {
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public boolean isFinal() {
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return (Opcodes.ACC_FINAL & modifiers) !=0;
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}
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public String getVerboseModifiers() {
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final String visibility = isPublic() ? "public" :
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isProtected() ? "protected" :
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isPrivate() ? "private" : null;
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final String kind = isStatic() ? "static" : isAbstract() ? "abstract" : null;
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return Stream.of(visibility, kind).filter(Objects::nonNull).collect(Collectors.joining(" "));
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}
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/**
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* Add a CallSite to this method.
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