+++ /dev/null
-package demo.wala;\r
-\r
-import java.io.IOException;\r
-import java.util.Collection;\r
-import java.util.Iterator;\r
-\r
-import com.ibm.wala.classLoader.ShrikeBTMethod;\r
-import com.ibm.wala.ipa.callgraph.AnalysisCache;\r
-import com.ibm.wala.ipa.callgraph.AnalysisOptions;\r
-import com.ibm.wala.ipa.callgraph.AnalysisScope;\r
-import com.ibm.wala.ipa.callgraph.CGNode;\r
-import com.ibm.wala.ipa.callgraph.CallGraph;\r
-import com.ibm.wala.ipa.callgraph.Entrypoint;\r
-import com.ibm.wala.ipa.callgraph.impl.Util;\r
-import com.ibm.wala.ipa.callgraph.propagation.PointerAnalysis;\r
-import com.ibm.wala.ipa.cha.ClassHierarchy;\r
-import com.ibm.wala.ipa.slicer.NormalStatement;\r
-import com.ibm.wala.ipa.slicer.Slicer;\r
-import com.ibm.wala.ipa.slicer.Statement;\r
-import com.ibm.wala.ssa.IR;\r
-import com.ibm.wala.ssa.SSAInstruction;\r
-import com.ibm.wala.types.Descriptor;\r
-import com.ibm.wala.util.CancelException;\r
-import com.ibm.wala.util.WalaException;\r
-import com.ibm.wala.util.config.AnalysisScopeReader;\r
-import com.ibm.wala.util.debug.Assertions;\r
-import com.ibm.wala.util.io.FileProvider;\r
-import com.ibm.wala.util.strings.Atom;\r
-\r
-import demo.util.DemoUtil;\r
-\r
-public class SlicerMain {\r
-\r
- public static void main(String[] args) {\r
- try {\r
- if (args.length > 0) {\r
- doSlicing(args[0]);\r
- }\r
- } catch (Exception e) {\r
- e.printStackTrace();\r
- }\r
- }\r
-\r
- public static void doSlicing(String appJar) throws WalaException, IOException, IllegalArgumentException, CancelException {\r
- // create an analysis scope representing the appJar as a J2SE application\r
-// AnalysisScope scope = AnalysisScopeReader.makeJavaBinaryAnalysisScope(appJar,CallGraphTestUtil.REGRESSION_EXCLUSIONS);\r
-// AnalysisScope scope = AnalysisScopeReader.makeJavaBinaryAnalysisScope(appJar, null);\r
-// AnalysisScope scope = AnalysisScopeReader.makeJavaBinaryAnalysisScope(appJar,new File(CallGraphTestUtil.REGRESSION_EXCLUSIONS));\r
- AnalysisScope scope = AnalysisScopeReader.makeJavaBinaryAnalysisScope(appJar, (new FileProvider()).getFile(DemoUtil.REGRESSION_EXCLUSIONS));\r
-\r
- ClassHierarchy cha = ClassHierarchy.make(scope);\r
-\r
- Iterable<Entrypoint> entrypoints = com.ibm.wala.ipa.callgraph.impl.Util.makeMainEntrypoints(scope, cha);\r
- AnalysisOptions options = new AnalysisOptions(scope, entrypoints);\r
-\r
- // build the call graph\r
- com.ibm.wala.ipa.callgraph.CallGraphBuilder cgb = Util.makeZeroCFABuilder(options, new AnalysisCache(),cha, scope, null, null);\r
-// CallGraph cg = cgb.makeCallGraph(options);\r
- CallGraph cg = cgb.makeCallGraph(options, null);\r
- PointerAnalysis pa = cgb.getPointerAnalysis();\r
-\r
- // find seed statement\r
- Statement statement = findCallTo(findMainMethod(cg), "println");\r
-\r
- Collection<Statement> slice;\r
-\r
- // context-sensitive traditional slice\r
- slice = Slicer.computeBackwardSlice ( statement, cg, pa );\r
- dumpSlice(slice);\r
-\r
- slice.stream()\r
- .mapToInt(s -> getLineNumber(s))\r
- .filter(line -> line != -1)\r
- .mapToObj(line -> "line = " + line)\r
- .forEach(System.out::println);\r
- \r
- // context-sensitive thin slice\r
- // slice = Slicer.computeBackwardSlice(statement, cg, pa, DataDependenceOptions.NO_BASE_PTRS,\r
- // ControlDependenceOptions.NONE);\r
- // dumpSlice(slice);\r
- //\r
- // // context-insensitive slice\r
- // ThinSlicer ts = new ThinSlicer(cg,pa);\r
- // Collection<Statement> slice = ts.computeBackwardThinSlice ( statement );\r
- // dumpSlice(slice);\r
- }\r
-\r
- public static int getLineNumber(Statement s) {\r
- if (s.getKind() == Statement.Kind.NORMAL) { // ignore special kinds of statements\r
- int bcIndex, instructionIndex = ((NormalStatement) s).getInstructionIndex();\r
- try {\r
- bcIndex = ((ShrikeBTMethod) s.getNode().getMethod()).getBytecodeIndex(instructionIndex);\r
- try {\r
- int src_line_number = s.getNode().getMethod().getLineNumber(bcIndex);\r
- return src_line_number;\r
-// System.err.println ( "Source line number = " + src_line_number );\r
- } catch (Exception e) {\r
-// System.err.println("Bytecode index no good");\r
-// System.err.println(e.getMessage());\r
- return -1;\r
- }\r
- } catch (Exception e ) {\r
- return -1;\r
-// System.err.println("it's probably not a BT method (e.g. it's a fakeroot method)");\r
-// System.err.println(e.getMessage());\r
- }\r
- }\r
- return -1;\r
- }\r
- \r
- public static CGNode findMainMethod(CallGraph cg) {\r
- Descriptor d = Descriptor.findOrCreateUTF8("([Ljava/lang/String;)V");\r
- Atom name = Atom.findOrCreateUnicodeAtom("main");\r
- for (Iterator<? extends CGNode> it = cg.getSuccNodes(cg.getFakeRootNode()); it.hasNext();) {\r
- CGNode n = it.next();\r
- if (n.getMethod().getName().equals(name) && n.getMethod().getDescriptor().equals(d)) {\r
- return n;\r
- }\r
- }\r
- Assertions.UNREACHABLE("failed to find main() method");\r
- return null;\r
- }\r
-\r
- public static Statement findCallTo(CGNode n, String methodName) {\r
- IR ir = n.getIR();\r
- for (Iterator<SSAInstruction> it = ir.iterateAllInstructions(); it.hasNext();) {\r
- SSAInstruction s = it.next();\r
- if (s instanceof com.ibm.wala.ssa.SSAAbstractInvokeInstruction) {\r
- com.ibm.wala.ssa.SSAAbstractInvokeInstruction call = (com.ibm.wala.ssa.SSAAbstractInvokeInstruction) s;\r
- if (call.getCallSite().getDeclaredTarget().getName().toString().equals(methodName)) {\r
- com.ibm.wala.util.intset.IntSet indices = ir.getCallInstructionIndices(call.getCallSite());\r
- com.ibm.wala.util.debug.Assertions.productionAssertion(indices.size() == 1, "expected 1 but got " + indices.size());\r
- return new com.ibm.wala.ipa.slicer.NormalStatement(n, indices.intIterator().next());\r
- }\r
- }\r
- }\r
- Assertions.UNREACHABLE("failed to find call to " + methodName + " in " + n);\r
- return null;\r
- }\r
-\r
- public static void dumpSlice(Collection<Statement> slice) {\r
- for (Statement s : slice) {\r
-// System.err.println(s);\r
- System.out.println(s);\r
- }\r
- }\r
-\r
-}\r
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