CHP (Call Hierarchy Printer) prints selected method call hierarchy in text format for easy processing (eg. grep). It is equivalent to "Call Hierarchy" function in any advanced IDE.

Installation

gradle jar

Usage

1. Before running the code you need classpath for the analyzed project.

   For Maven run:

    mvn dependency:build-classpath | grep -v "^\[.*\].*" | tr '\n' ':' > this.classpath
   

   For Gradle add this to build.gradle:

    task showClasspath << {
    	it.println sourceSets.main.runtimeClasspath.collect { it.absolutePath }.join(':')
    }
   

   and run

    gradle -q showClasspath > this.classpath
   

2. To print method call hierarchy run:

    java -jar build/libs/org.chp-VERSION.jar -m (--method-name) METHOD_NAME -s (--source-folder) SOURCE_FOLDERS --classpath-file CLASSPATH_FILE
   
    --classpath-file CLASSPATH_FILE     : file containing the classpath for the analyzed project
    -c (--classpath) CLASSPATH          : classpath for the analyzed project
    -m (--method-name) METHOD_NAME      : method name to print call hierarchy
    -s (--source-folder) SOURCE_FOLDERS : source folder(s) for the analyzed project
   

Example

Execute following from this project root directory:

$ gradle -q showClasspath > this.classpath
$ java -jar build/libs//org.chp-*.jar -s src/main/java -m org.chp.ShowMethodCallHierarchy.main --classpath-file this.classpath

Output:

Method call hierarchy callees of
org.chp.ShowMethodCallHierarchy.main(java.lang.String[])
  org.chp.ShowMethodCallHierarchy.doMain
    spoon.Launcher.setArgs(java.lang.String[])
    spoon.Launcher.setArgs(java.lang.String[])
    org.apache.commons.lang3.StringUtils.strip(java.lang.String, java.lang.String)
    org.apache.commons.io.FileUtils.readFileToString(java.io.File)
    spoon.Launcher.addInputResource(spoon.compiler.SpoonResource)
    spoon.Launcher.run
    org.chp.ShowMethodCallHierarchy.printCallHierarchy(spoon.Launcher, java.io.PrintStream)
      spoon.Launcher.getFactory
      org.chp.ClassHierarchyProcessor.executeSpoon(spoon.support.QueueProcessingManager)
        spoon.support.QueueProcessingManager.addProcessor(spoon.processing.Processor<?>)
        spoon.support.QueueProcessingManager.process
        org.slf4j.Logger.debug(java.lang.String)
      org.chp.MethodExecutionProcessor.executeSpoon(spoon.support.QueueProcessingManager)
        spoon.support.QueueProcessingManager.addProcessor(spoon.processing.Processor<?>)
        spoon.support.QueueProcessingManager.process
        org.slf4j.Logger.debug(java.lang.String)
      org.chp.MethodCallHierarchyBuilder.forMethodName(java.lang.String, java.util.Map<spoon.reflect.reference.CtExecutableReference, java.util.List<spoon.reflect.reference.CtExecutableReference>>, java.util.Map<spoon.reflect.reference.CtTypeReference, java.util.Set<spoon.reflect.reference.CtTypeReference>>)
        org.chp.MethodCallHierarchyBuilder.findExecutableForMethodName(java.lang.String, java.util.Map<spoon.reflect.reference.CtExecutableReference, java.util.List<spoon.reflect.reference.CtExecutableReference>>)
          java.util.Map<spoon.reflect.reference.CtExecutableReference, java.util.List<spoon.reflect.reference.CtExecutableReference>>.keySet
          spoon.reflect.reference.CtTypeReference.getQualifiedName
          spoon.reflect.reference.CtExecutableReference.getDeclaringType
          spoon.reflect.reference.CtReference.getSimpleName
          java.lang.String.equals(java.lang.Object)
      org.chp.MethodCallHierarchyBuilder.printCallHierarchy(java.io.PrintStream)
        java.io.PrintStream.println(java.lang.String)
        org.chp.MethodCallHierarchyBuilder.printCallHierarchy(java.io.PrintStream, spoon.reflect.reference.CtExecutableReference, java.lang.String, java.util.Set<spoon.reflect.reference.CtExecutableReference>)
          java.util.Set<spoon.reflect.reference.CtExecutableReference>.contains(java.lang.Object)
          java.util.Set<spoon.reflect.reference.CtExecutableReference>.add(spoon.reflect.reference.CtExecutableReference)
          java.util.Map<spoon.reflect.reference.CtExecutableReference, java.util.List<spoon.reflect.reference.CtExecutableReference>>.get(java.lang.Object)
          java.io.PrintStream.println(java.lang.String)
          java.lang.Object.toString
          org.chp.MethodCallHierarchyBuilder.printCallHierarchy(java.io.PrintStream, spoon.reflect.reference.CtExecutableReference, java.lang.String, java.util.Set<spoon.reflect.reference.CtExecutableReference>)
          java.lang.String.concat(java.lang.String)
          java.util.Map<spoon.reflect.reference.CtTypeReference, java.util.Set<spoon.reflect.reference.CtTypeReference>>.get(java.lang.Object)
          spoon.reflect.reference.CtExecutableReference.getDeclaringType
          spoon.reflect.reference.CtExecutableReference.getOverridingExecutable(spoon.reflect.reference.CtTypeReference)
          java.io.PrintStream.println(java.lang.String)
          java.lang.Object.toString
          org.chp.MethodCallHierarchyBuilder.printCallHierarchy(java.io.PrintStream, spoon.reflect.reference.CtExecutableReference, java.lang.String, java.util.Set<spoon.reflect.reference.CtExecutableReference>)
          java.lang.String.concat(java.lang.String)
  org.chp.ShowMethodCallHierarchy.parse(java.lang.String[])
    org.kohsuke.args4j.CmdLineParser.parseArgument(java.lang.String[])
    java.io.PrintStream.println(java.lang.String)
    java.lang.Throwable.getMessage
    java.io.PrintStream.print(java.lang.String)
    org.kohsuke.args4j.CmdLineParser.printExample(org.kohsuke.args4j.OptionHandlerFilter)
    java.io.PrintStream.println
    java.io.PrintStream.println
    java.io.PrintStream.println(java.lang.String)
    org.kohsuke.args4j.CmdLineParser.printUsage(java.io.OutputStream)
    java.lang.System.exit(int)