Package org.drools.asm

Examples of org.drools.asm.ClassReader

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    /** Walk up the inheritance hierarchy recursively, reading in fields */
    private void processClassWithByteCode(final Class< ? > clazz,
                                          final InputStream stream,
                                          final boolean includeFinalMethods) throws IOException {

        final ClassReader reader = new ClassReader( stream );
        final ClassFieldVisitor visitor = new ClassFieldVisitor( clazz,
                                                                 includeFinalMethods,
                                                                 this );
        reader.accept( visitor,
                       false );
        if ( clazz.getSuperclass() != null ) {
            final String name = getResourcePath( clazz.getSuperclass() );
            final InputStream parentStream = clazz.getResourceAsStream( name );
            if ( parentStream != null ) {
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        if ( !ok ) {
            System.err.println( "Prints a disassembled view of the given class." );
            System.err.println( "Usage: TraceClassVisitor [-debug] " + "<fully qualified class name or class file name>" );
            return;
        }
        ClassReader cr;
        if ( args[i].endsWith( ".class" ) || args[i].indexOf( '\\' ) > -1 || args[i].indexOf( '/' ) > -1 ) {
            cr = new ClassReader( new FileInputStream( args[i] ) );
        } else {
            cr = new ClassReader( args[i] );
        }
        cr.accept( new TraceClassVisitor( new PrintWriter( System.out ) ),
                   getDefaultAttributes(),
                   skipDebug );
    }
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        if ( !ok ) {
            System.err.println( "Prints the ASM code to generate the given class." );
            System.err.println( "Usage: ASMifierClassVisitor [-debug] " + "<fully qualified class name or class file name>" );
            return;
        }
        ClassReader cr;
        if ( args[i].endsWith( ".class" ) || args[i].indexOf( '\\' ) > -1 || args[i].indexOf( '/' ) > -1 ) {
            cr = new ClassReader( new FileInputStream( args[i] ) );
        } else {
            cr = new ClassReader( args[i] );
        }
        cr.accept( new ASMifierClassVisitor( new PrintWriter( System.out ) ),
                   getDefaultAttributes(),
                   skipDebug );
    }
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    /** Walk up the inheritance hierarchy recursively, reading in fields */
    private void processClassWithByteCode(final Class clazz,
                                          final InputStream stream,
                                          final boolean includeFinalMethods) throws IOException {

        final ClassReader reader = new ClassReader( stream );
        final ClassFieldVisitor visitor = new ClassFieldVisitor( clazz,
                                                                 includeFinalMethods,
                                                                 this );
        reader.accept( visitor,
                       false );
        if ( clazz.getSuperclass() != null ) {
            final String name = getResourcePath( clazz.getSuperclass() );
            final InputStream parentStream = clazz.getResourceAsStream( name );
            if ( parentStream != null ) {
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     * debug info like local var declarations and line numbers are ignored, so the focus is on the content.
     */
    public static List getMethodBytecode(final String methodName,
                                         final byte[] bytes) {
        final Tracer visit = new Tracer( methodName );
        final ClassReader classReader = new ClassReader( bytes );
        classReader.accept( visit,
                            true );
        final TraceMethodVisitor trace = visit.getTrace();
        return trace.getText();
    }
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public class MethodComparerTest extends TestCase {

    public void testMethodCompare() throws Exception {
        final MethodComparator comp = new MethodComparator();
        boolean result = comp.equivalent( "evaluate",
                                          new ClassReader( getClassData( MethodCompareA.class ) ),
                                          "evaluate",
                                          new ClassReader( getClassData( MethodCompareB.class ) ) );
        assertEquals( true,
                      result );

        result = comp.equivalent( "evaluate",
                                  new ClassReader( getClassData( MethodCompareA.class ) ),
                                  "evaluate2",
                                  new ClassReader( getClassData( MethodCompareA.class ) ) );
        assertEquals( false,
                      result );

        result = comp.equivalent( "evaluate",
                                  new ClassReader( getClassData( MethodCompareB.class ) ),
                                  "evaluate2",
                                  new ClassReader( getClassData( MethodCompareA.class ) ) );
        assertEquals( false,
                      result );

        result = comp.equivalent( "evaluate",
                                  new ClassReader( getClassData( MethodCompareB.class ) ),
                                  "evaluate",
                                  new ClassReader( getClassData( MethodCompareA.class ) ) );
        assertEquals( true,
                      result );

        result = comp.equivalent( "evaluate",
                                  new ClassReader( getClassData( MethodCompareA.class ) ),
                                  "evaluate",
                                  new ClassReader( getClassData( MethodCompareA.class ) ) );
        assertEquals( true,
                      result );

        result = comp.equivalent( "evaluate",
                                  new ClassReader( getClassData( MethodCompareA.class ) ),
                                  "askew",
                                  new ClassReader( getClassData( MethodCompareA.class ) ) );
        assertEquals( false,
                      result );

    }
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    /** Walk up the inheritance hierarchy recursively, reading in fields */
    private void processClassWithByteCode(final Class< ? > clazz,
                                          final InputStream stream,
                                          final boolean includeFinalMethods) throws IOException {

        final ClassReader reader = new ClassReader( stream );
        final ClassFieldVisitor visitor = new ClassFieldVisitor( clazz,
                                                                 includeFinalMethods,
                                                                 this );
        reader.accept( visitor,
                       false );
        if ( clazz.getSuperclass() != null ) {
            final String name = getResourcePath( clazz.getSuperclass() );
            final InputStream parentStream = clazz.getResourceAsStream( name );
            if ( parentStream != null ) {
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Related Classes of org.drools.asm.ClassReader

  • org.drools.asm.util.ASMifierClassVisitor
  • org.drools.asm.util.TraceClassVisitor
  • org.drools.util.asm.ClassFieldInspector
  • org.drools.util.asm.MethodComparator
  • org.drools.util.asm.MethodComparerTest
  • java.io.IOException
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