private static void generateParameter(PrintWriter writer, ParameterDeclaration param, Mode mode) {
   writer.print(", ");
   if (mode == Mode.BUFFEROBJECT && param.getAnnotation(BufferObject.class) != null) {
     writer.print("jlong " + param.getSimpleName() + Utils.BUFFER_OBJECT_PARAMETER_POSTFIX);
   } else if (param.getAnnotation(GLpointer.class) != null) {
     writer.print("jlong " + param.getSimpleName());
   } else {
     JNITypeTranslator translator = new JNITypeTranslator();
     param.getType().accept(translator);
     writer.print(translator.getSignature() + " " + param.getSimpleName());
     if (Utils.getNIOBufferType(param.getType()) != null)
       writer.print(", jint " + param.getSimpleName() + BUFFER_POSITION_POSTFIX);
   }
 }
 public void process() {
   for (TypeDeclaration typeDecl : env.getSpecifiedTypeDeclarations()) {
     ExtractInterface annot = typeDecl.getAnnotation(ExtractInterface.class);
     if (annot == null) break;
     for (MethodDeclaration m : typeDecl.getMethods())
       if (m.getModifiers().contains(Modifier.PUBLIC)
           && !(m.getModifiers().contains(Modifier.STATIC))) interfaceMethods.add(m);
     if (interfaceMethods.size() > 0) {
       try {
         PrintWriter writer = env.getFiler().createSourceFile(annot.value());
         writer.println("package " + typeDecl.getPackage().getQualifiedName() + ";");
         writer.println("public interface " + annot.value() + " {");
         for (MethodDeclaration m : interfaceMethods) {
           writer.print("  public ");
           writer.print(m.getReturnType() + " ");
           writer.print(m.getSimpleName() + " (");
           int i = 0;
           for (ParameterDeclaration parm : m.getParameters()) {
             writer.print(parm.getType() + " " + parm.getSimpleName());
             if (++i < m.getParameters().size()) writer.print(", ");
           }
           writer.println(");");
         }
         writer.println("}");
         writer.close();
       } catch (IOException ioe) {
         throw new RuntimeException(ioe);
       }
     }
   }
 }
 private static void generateBufferParameterAddresses(
     TypeMap type_map, PrintWriter writer, MethodDeclaration method, Mode mode) {
   boolean loopDeclared = false;
   for (ParameterDeclaration param : method.getParameters())
     if (Utils.isAddressableType(param.getType()) && param.getAnnotation(Result.class) == null)
       loopDeclared =
           generateBufferParameterAddress(type_map, writer, method, param, mode, loopDeclared);
 }
 private static void generateStringDeallocations(
     PrintWriter writer, Collection<ParameterDeclaration> params) {
   for (ParameterDeclaration param : params) {
     if (Utils.getJavaType(param.getType()).equals(String.class)
         && param.getAnnotation(Result.class) == null)
       writer.println("\tfree(" + param.getSimpleName() + BUFFER_ADDRESS_POSTFIX + ");");
     else if (param.getAnnotation(StringList.class) != null) // Free the string array mem
     writer.println("\tfree(" + param.getSimpleName() + STRING_LIST_POSTFIX + ");");
   }
 }
 private static void generateCallParameter(
     PrintWriter writer, TypeMap type_map, ParameterDeclaration param) {
   boolean is_indirect = param.getAnnotation(Indirect.class) != null;
   if (is_indirect || param.getAnnotation(StringList.class) != null) {
     writer.print("(");
     NativeTypeTranslator translator = new NativeTypeTranslator(type_map, param);
     param.getType().accept(translator);
     writer.print(translator.getSignature());
     writer.print("*)");
   }
   if (param.getAnnotation(GLpointer.class) != null)
     writer.print("(" + param.getAnnotation(GLpointer.class).value() + ")(intptr_t)");
   if (param.getAnnotation(Result.class) != null || is_indirect) writer.print("&");
   if (param.getAnnotation(Result.class) != null) {
     writer.print(Utils.RESULT_VAR_NAME);
   } else {
     writer.print(param.getSimpleName());
     if (param.getAnnotation(StringList.class) != null) writer.print(STRING_LIST_POSTFIX);
     else if (Utils.isAddressableType(param.getType())) writer.print(BUFFER_ADDRESS_POSTFIX);
   }
 }
  private static boolean generateBufferParameterAddress(
      TypeMap type_map,
      PrintWriter writer,
      MethodDeclaration method,
      ParameterDeclaration param,
      Mode mode,
      boolean loopDeclared) {
    NativeTypeTranslator translator = new NativeTypeTranslator(type_map, param);
    param.getType().accept(translator);
    writer.print("\t" + translator.getSignature() + param.getSimpleName());
    writer.print(BUFFER_ADDRESS_POSTFIX + " = ((");
    writer.print(translator.getSignature());
    Check check_annotation = param.getAnnotation(Check.class);
    writer.print(")");
    if (mode == Mode.BUFFEROBJECT && param.getAnnotation(BufferObject.class) != null) {
      writer.print(
          "offsetToPointer("
              + param.getSimpleName()
              + Utils.BUFFER_OBJECT_PARAMETER_POSTFIX
              + "))");
    } else {
      Class java_type = Utils.getJavaType(param.getType());
      if (Buffer.class.isAssignableFrom(java_type)
          || java_type.equals(CharSequence.class)
          || java_type.equals(CharSequence[].class)) {
        boolean explicitly_byte_sized =
            java_type.equals(Buffer.class)
                || translator.getAnnotationType().equals(type_map.getVoidType());
        if (explicitly_byte_sized) writer.print("(((char *)");
        if (method.getAnnotation(GenerateAutos.class) != null
            || (check_annotation != null && check_annotation.canBeNull())) {
          writer.print("safeGetBufferAddress(env, " + param.getSimpleName());
        } else {
          writer.print("(*env)->GetDirectBufferAddress(env, " + param.getSimpleName());
        }
        writer.print("))");
        writer.print(" + " + param.getSimpleName() + BUFFER_POSITION_POSTFIX);
        if (explicitly_byte_sized) writer.print("))");
      } else if (java_type.equals(String.class)) {
        writer.print("GetStringNativeChars(env, " + param.getSimpleName() + "))");
      } else throw new RuntimeException("Illegal type " + java_type);
    }
    writer.println(";");

    if (param.getAnnotation(StringList.class) != null) {
      if (Utils.getJavaType(param.getType()) != CharSequence[].class
          && (param.getAnnotation(GLchar.class) == null
              || param.getAnnotation(NullTerminated.class) == null
              || param.getAnnotation(NullTerminated.class).value().length() == 0))
        throw new RuntimeException(
            "StringList annotation can only be applied on null-terminated GLchar buffers.");

      if ("_str".equals(param.getSimpleName()))
        throw new RuntimeException(
            "The name '_str' is not valid for arguments annotated with StringList");

      // Declare loop counters and allocate string array
      if (!loopDeclared) {
        writer.println("\tunsigned int _str_i;");
        writer.println("\tGLchar *_str_address;");
        loopDeclared = true;
      }
      writer.println(
          "\tGLchar **"
              + param.getSimpleName()
              + STRING_LIST_POSTFIX
              + " = (GLchar **) malloc("
              + param.getAnnotation(StringList.class).value()
              + "*sizeof(GLchar*));");
    }
    return loopDeclared;
  }