add option to (unsoundly) ignore possible static initializer calls when building call graph

git-svn-id: https://wala.svn.sourceforge.net/svnroot/wala/trunk@3187 f5eafffb-2e1d-0410-98e4-8ec43c5233c4

com.ibm.wala.core.testdata/src/staticInit/TestStaticInit.java

@@ -0,0 +1,33 @@
+/*******************************************************************************
+ * Copyright (c) 2008 IBM Corporation.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package staticInit;
+
+/**
+ * @author manu
+ * 
+ */
+public class TestStaticInit {
+
+  private static class A {
+
+    static {
+      doNothing();
+    }
+
+    private static void doNothing() {
+
+    }
+  }
+
+  public static void main(String[] args) {
+    new A();
+  }
+}

com.ibm.wala.core.tests/src/com/ibm/wala/core/tests/callGraph/CallGraphTest.java

@@ -23,6 +23,7 @@ import com.ibm.wala.eclipse.util.CancelException;
 import com.ibm.wala.ipa.callgraph.AnalysisCache;
 import com.ibm.wala.ipa.callgraph.AnalysisOptions;
 import com.ibm.wala.ipa.callgraph.AnalysisScope;
+import com.ibm.wala.ipa.callgraph.CGNode;
 import com.ibm.wala.ipa.callgraph.CallGraph;
 import com.ibm.wala.ipa.callgraph.CallGraphStats;
 import com.ibm.wala.ipa.callgraph.Entrypoint;
@@ -117,6 +118,28 @@ public class CallGraphTest extends WalaTestCase {
     doCallGraphs(options, new AnalysisCache(), cha, scope);
   }
 
+  public void testStaticInit() throws ClassHierarchyException, IllegalArgumentException, CancelException, IOException {
+    AnalysisScope scope = CallGraphTestUtil.makeJ2SEAnalysisScope(TestConstants.WALA_TESTDATA,
+        CallGraphTestUtil.REGRESSION_EXCLUSIONS);
+    ClassHierarchy cha = ClassHierarchy.make(scope);
+    Iterable<Entrypoint> entrypoints = com.ibm.wala.ipa.callgraph.impl.Util.makeMainEntrypoints(scope, cha,
+        "LstaticInit/TestStaticInit");
+    AnalysisOptions options = CallGraphTestUtil.makeAnalysisOptions(scope, entrypoints);
+    CallGraph cg = CallGraphTestUtil.buildZeroCFA(options, new AnalysisCache(), cha, scope, false);
+    boolean foundDoNothing = false;
+    for (CGNode n : cg) {
+      if (n.toString().contains("doNothing")) {
+        foundDoNothing = true;
+        break;
+      }
+    }
+    assertTrue(foundDoNothing);
+    options.setHandleStaticInit(false);
+    cg = CallGraphTestUtil.buildZeroCFA(options, new AnalysisCache(), cha, scope, false);
+    for (CGNode n : cg) {
+      assertTrue(!n.toString().contains("doNothing"));
+    }
+  }
 
   public void testRecursion() throws ClassHierarchyException, IllegalArgumentException, CancelException, IOException {
     AnalysisScope scope = CallGraphTestUtil.makeJ2SEAnalysisScope(TestConstants.WALA_TESTDATA,
@@ -208,6 +231,7 @@ public class CallGraphTest extends WalaTestCase {
 
   /**
    * TODO: refactor this to avoid excessive code bloat.
+   * 
    * @throws CancelException
    * @throws IllegalArgumentException
    */

com.ibm.wala.core/src/com/ibm/wala/ipa/callgraph/AnalysisOptions.java

@@ -77,6 +77,10 @@ public class AnalysisOptions {
    */
   private boolean handleReflection = true;
 
+  /**
+   * Should call graph construction handle possible invocations of static initializer methods?
+   */
+  private boolean handleStaticInit = true;
   /**
    * Should we use the pretransitive solver for pointer analysis? Not yet ready for prime-time.
    */
@@ -336,4 +340,12 @@ public class AnalysisOptions {
   public void setHandleReflection(boolean handleReflection) {
     this.handleReflection = handleReflection;
   }
+
+  public boolean getHandleStaticInit() {
+    return handleStaticInit;
+  }
+
+  public void setHandleStaticInit(boolean handleStaticInit) {
+    this.handleStaticInit = handleStaticInit;
+  }
 }

com.ibm.wala.core/src/com/ibm/wala/ipa/callgraph/propagation/SSAPropagationCallGraphBuilder.java

@@ -1382,6 +1382,10 @@ public abstract class SSAPropagationCallGraphBuilder extends PropagationCallGrap
         Assertions._assert(klass != null);
       }
 
+      if (!getBuilder().getOptions().getHandleStaticInit()) {
+        return;
+      }
+      
       if (getBuilder().clinitVisited.contains(klass)) {
         return;
       }