Class ClassWriter

java.lang.Object
org.gjt.sp.jedit.bsh.org.objectweb.asm.ClassWriter
All Implemented Interfaces:
ClassVisitor
public class ClassWriter extends Object implements ClassVisitor
A ClassVisitor that generates Java class files. More precisely this visitor generates a byte array conforming to the Java class file format. It can be used alone, to generate a Java class "from scratch", or with one or more adapter class visitors to generate a modified class from one or more existing Java classes.

  • Constructor Details

    • ClassWriter

      public ClassWriter(boolean computeMaxs)
      Constructs a new ClassWriter object.
      Parameters:
      computeMaxs - true if the maximum stack size and the maximum number of local variables must be automatically computed. If this flag is true, then the arguments of the visitMaxs method of the CodeVisitor returned by the visitMethod method will be ignored, and computed automatically from the signature and the bytecode of each method.

  • Method Details

    • visit

      public void visit(int access, String name, String superName, String[] interfaces, String sourceFile)
      Description copied from interface: ClassVisitor
      Visits the header of the class.
      Specified by:
      visit in interface ClassVisitor
      Parameters:
      access - the class's access flags (see Constants). This parameter also indicates if the class is deprecated.
      name - the internal name of the class (see getInternalName).
      superName - the internal of name of the super class (see getInternalName). For interfaces, the super class is Object. May be null, but only for the java.lang.Object class.
      interfaces - the internal names of the class's interfaces (see getInternalName). May be null.
      sourceFile - the name of the source file from which this class was compiled. May be null.

    • visitInnerClass

      public void visitInnerClass(String name, String outerName, String innerName, int access)
      Description copied from interface: ClassVisitor
      Visits information about an inner class. This inner class is not necessarily a member of the class being visited.
      Specified by:
      visitInnerClass in interface ClassVisitor
      Parameters:
      name - the internal name of an inner class (see getInternalName).
      outerName - the internal name of the class to which the inner class belongs (see getInternalName). May be null.
      innerName - the (simple) name of the inner class inside its enclosing class. May be null for anonymous inner classes.
      access - the access flags of the inner class as originally declared in the enclosing class.

    • visitField

      public void visitField(int access, String name, String desc, Object value)
      Description copied from interface: ClassVisitor
      Visits a field of the class.
      Specified by:
      visitField in interface ClassVisitor
      Parameters:
      access - the field's access flags (see Constants). This parameter also indicates if the field is synthetic and/or deprecated.
      name - the field's name.
      desc - the field's descriptor (see Type).
      value - the field's initial value. This parameter, which may be null if the field does not have an initial value, must be an Integer, a Float, a Long, a Double or a String.

    • visitMethod

      public CodeVisitor visitMethod(int access, String name, String desc, String[] exceptions)
      Description copied from interface: ClassVisitor
      Visits a method of the class. This method must return a new CodeVisitor instance (or null) each time it is called, i.e., it should not return a previously returned visitor.
      Specified by:
      visitMethod in interface ClassVisitor
      Parameters:
      access - the method's access flags (see Constants). This parameter also indicates if the method is synthetic and/or deprecated.
      name - the method's name.
      desc - the method's descriptor (see Type).
      exceptions - the internal names of the method's exception classes (see getInternalName). May be null.
      Returns:
      an object to visit the byte code of the method, or null if this class visitor is not interested in visiting the code of this method.

    • visitEnd

      public void visitEnd()
      Description copied from interface: ClassVisitor
      Visits the end of the class. This method, which is the last one to be called, is used to inform the visitor that all the fields and methods of the class have been visited.
      Specified by:
      visitEnd in interface ClassVisitor

    • toByteArray

      public byte[] toByteArray()
      Returns the bytecode of the class that was build with this class writer.
      Returns:
      the bytecode of the class that was build with this class writer.