Example driver for ECJ front end
This shows how with ECJ, the JDT source front end can be used from the command-line (with no running Eclipse instance).
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package com.ibm.wala.ide.util;
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import java.io.File;
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import java.io.IOException;
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import java.util.Properties;
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import java.util.jar.JarFile;
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import com.ibm.wala.cast.ir.ssa.AstIRFactory;
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import com.ibm.wala.cast.java.client.impl.ZeroOneContainerCFABuilderFactory;
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import com.ibm.wala.cast.java.ipa.callgraph.JavaSourceAnalysisScope;
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import com.ibm.wala.cast.java.translator.jdt.ejc.EJCClassLoaderFactory;
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import com.ibm.wala.classLoader.SourceDirectoryTreeModule;
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import com.ibm.wala.ipa.callgraph.AnalysisCache;
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import com.ibm.wala.ipa.callgraph.AnalysisOptions;
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import com.ibm.wala.ipa.callgraph.AnalysisScope;
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import com.ibm.wala.ipa.callgraph.CallGraph;
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import com.ibm.wala.ipa.callgraph.CallGraphBuilder;
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import com.ibm.wala.ipa.callgraph.CallGraphBuilderCancelException;
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import com.ibm.wala.ipa.callgraph.CallGraphStats;
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import com.ibm.wala.ipa.callgraph.Entrypoint;
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import com.ibm.wala.ipa.callgraph.impl.Util;
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import com.ibm.wala.ipa.cha.ClassHierarchy;
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import com.ibm.wala.ipa.cha.ClassHierarchyException;
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import com.ibm.wala.ipa.cha.IClassHierarchy;
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import com.ibm.wala.properties.WalaProperties;
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import com.ibm.wala.types.ClassLoaderReference;
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import com.ibm.wala.util.io.CommandLine;
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import com.ibm.wala.util.warnings.Warnings;
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/**
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* Driver that constructs a call graph for an application specified as a directory of source code.
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* Example of using the JDT front-end based on ECJ.
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* Useful for getting some code to copy-paste.
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*/
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public class SourceDirCallGraph {
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/**
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* Usage: ScopeFileCallGraph -sourceDir file_path -mainClass class_name
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*
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* If given -mainClass, uses main() method of class_name as entrypoint. Class
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* name should start with an 'L'.
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*
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* Example args: -sourceDir /tmp/srcTest -mainClass LFoo
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*
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*/
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public static void main(String[] args) throws ClassHierarchyException, IllegalArgumentException, CallGraphBuilderCancelException, IOException {
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long start = System.currentTimeMillis();
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Properties p = CommandLine.parse(args);
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String sourceDir = p.getProperty("sourceDir");
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String mainClass = p.getProperty("mainClass");
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AnalysisScope scope = new JavaSourceAnalysisScope();
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// add standard libraries to scope
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String[] stdlibs = WalaProperties.getJ2SEJarFiles();
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for (int i = 0; i < stdlibs.length; i++) {
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scope.addToScope(ClassLoaderReference.Primordial, new JarFile(stdlibs[i]));
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}
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// add the source directory
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scope.addToScope(JavaSourceAnalysisScope.SOURCE, new SourceDirectoryTreeModule(new File(sourceDir)));
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// build the class hierarchy
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IClassHierarchy cha = ClassHierarchy.make(scope, new EJCClassLoaderFactory(scope.getExclusions()));
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System.out.println(cha.getNumberOfClasses() + " classes");
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System.out.println(Warnings.asString());
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Warnings.clear();
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AnalysisOptions options = new AnalysisOptions();
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Iterable<Entrypoint> entrypoints = Util.makeMainEntrypoints(JavaSourceAnalysisScope.SOURCE, cha, new String[] { mainClass } );
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options.setEntrypoints(entrypoints);
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// you can dial down reflection handling if you like
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// options.setReflectionOptions(ReflectionOptions.NONE);
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AnalysisCache cache = new AnalysisCache(AstIRFactory.makeDefaultFactory());
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//CallGraphBuilder builder = new ZeroCFABuilderFactory().make(options, cache, cha, scope, false);
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CallGraphBuilder builder = new ZeroOneContainerCFABuilderFactory().make(options, cache, cha, scope, false);
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System.out.println("building call graph...");
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CallGraph cg = builder.makeCallGraph(options, null);
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long end = System.currentTimeMillis();
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System.out.println("done");
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System.out.println("took " + (end-start) + "ms");
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System.out.println(CallGraphStats.getStats(cg));
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}
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}
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