Examples of org.luaj.vm2.LuaError

org.luaj.vm2.LuaTable
RuntimeException that is thrown and caught in response to a lua error.
{@link LuaError} is used wherever a lua call to {@code error()} would be used within a script.
Since it is an unchecked exception inheriting from {@link RuntimeException}, Java method signatures do notdeclare this exception, althoug it can be thrown on almost any luaj Java operation. This is analagous to the fact that any lua script can throw a lua error at any time.

  public Varargs invoke(Varargs args) {
    Object[] a = convertArgs(args);
    try {
      return CoerceJavaToLua.coerce( constructor.newInstance(a) );
    } catch (InvocationTargetException e) {
      throw new LuaError(e.getTargetException());
    } catch (Exception e) {
      return LuaValue.error("coercion error "+e);
    }
  }

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  LuaValue invokeMethod(Object instance, Varargs args) {
    Object[] a = convertArgs(args);
    try {
      return CoerceJavaToLua.coerce( method.invoke(instance, a) );
    } catch (InvocationTargetException e) {
      throw new LuaError(e.getTargetException());
    } catch (Exception e) {
      return LuaValue.error("coercion error "+e);
    }
  }

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    Field f = jclass.getField(key);
    if ( f != null )
      try {
        return CoerceJavaToLua.coerce(f.get(m_instance));
      } catch (Exception e) {
        throw new LuaError(e);
      }
    LuaValue m = jclass.getMethod(key);
    if ( m != null )
      return m;
    return super.get(key);

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    if ( f != null )
      try {
        f.set(m_instance, CoerceLuaToJava.coerce(value, f.getType()));
        return;
      } catch (Exception e) {
        throw new LuaError(e);
      }
    super.set(key, value);
  }

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            LuaC.install();
            LuaTable environment = LuaValue.tableOf();


            environment.set("animation", new AnimationFunction());


            LuaFunction code = LoadState.load(new FileInputStream(spriteFile),
                spriteFile.getName(), environment);
            code.call();
        }
        catch (IOException ex) {
            throw new SpriteException(ex.getMessage());
        }
        catch (LuaError ex) {

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                    if (!param.get("raw").isnil()) {
                        actualParam = param.get("raw").checkjstring();
                    } else if (!param.get("num").isnil()) {
                        if (param.get("num").isnumber()) {
                            LuaNumber number = param.get("num").checknumber();
                            NumberFormat nf = NumberFormat.getInstance(Locale.forLanguageTag(lang));
                            actualParam = nf.format(number.todouble());
                        } else {
                            actualParam = param.get("num").tojstring();
                        }
                    } else {
                        actualParam = "unknown";

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        try {
            this.animations = new TreeMap<String, SpriteAnimation>();
            File spriteFile = Project.getSpriteFile(animationSetId);
            LuaC.install();
            LuaTable environment = LuaValue.tableOf();


            environment.set("animation", new AnimationFunction());


            LuaFunction code = LoadState.load(new FileInputStream(spriteFile),
                spriteFile.getName(), environment);
            code.call();
        }

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        @Override
        public LuaValue call(LuaValue arg) {


            try {
                LuaTable table = arg.checktable();


                String animationName = table.get("name").checkjstring();
                String srcImageName = table.get("src_image").checkjstring();
                int frameDelay = table.get("frame_delay").optint(0);
                int frameToLoopOn = table.get("frame_to_loop_on").optint(-1);
                LuaTable directionsTable = table.get("directions").checktable();


                BufferedImage srcImage = null;


                try {
                    if (!srcImageName.equals("tileset")) {
                        srcImage = Project.getProjectImage("sprites/" + srcImageName);
                    }
                    else if (!tilesetId.isEmpty()) {
                        srcImage = Project.getProjectImage(
                                "tilesets/" + Project.getTilesetEntitiesImageFile(tilesetId).getName());
                    }
                } catch (IOException ex) {
                    // image cannot be loaded
                }


                Vector<SpriteAnimationDirection> directions = new Vector<SpriteAnimationDirection>();


                // Traverse the directions table.
                LuaValue key = LuaValue.NIL;
                while (true) {


                    Varargs keyValue = directionsTable.next(key);
                    key = keyValue.arg1();
                    if (key.isnil()) {
                        break;
                    }
                    LuaValue directionTable = keyValue.arg(2);

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    }


    private void fakeWikiBase() {
        // fake http://www.mediawiki.org/wiki/Extension:Wikibase
        final LuaValue mw = globals.get("mw");
        final LuaTable wikibase = new LuaTable();
        wikibase.set("getEntity", new ZeroArgFunction() {
            @Override public LuaValue call() {
                return NIL;
            }
        });
        mw.set("wikibase", wikibase);

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        }
    }


    @Override
    public LuaTable getInterface() {
        final LuaTable table = new LuaTable();
        table.set("loadPackage", loadPackage());
        table.set("frameExists", frameExists());
        table.set("newChildFrame", newChildFrame());
        table.set("getExpandedArgument", getExpandedArgument());
        table.set("getAllExpandedArguments", getAllExpandedArguments());
        table.set("getFrameTitle", getFrameTitle());
        table.set("expandTemplate", expandTemplate());
        table.set("callParserFunction", callParserFunction());
        table.set("preprocess", preprocess());
        table.set("incrementExpensiveFunctionCount", incrementExpensiveFunctionCount());
        table.set("isSubsting", isSubsting());
        return table;
    }

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