org.keplerproject.luajava

Class LuaJavaAPI

java.lang.Object

org.keplerproject.luajava.LuaJavaAPI

public final class LuaJavaAPI
extends Object

Class that contains functions accessed by lua.

Method Summary

Modifier and Type	Method and Description
static int	checkField(int luaState, Object obj, String fieldName) Checks if there is a field on the obj with the given name
static int	checkMethod(int luaState, Object obj, String methodName) Checks to see if there is a method with the given name.
static int	classIndex(int luaState, Class clazz, String searchName) Java function to be called when a java Class metamethod __index is called.
static int	createProxyObject(int luaState, String implem) Function that creates an object proxy and pushes it into the stack
static int	javaLoadLib(int luaState, String className, String methodName) Calls the static method methodName in class className that receives a LuaState as first parameter.
static int	javaNew(int luaState, Class clazz) javaNew returns a new instance of a given clazz
static int	javaNewInstance(int luaState, String className) Pushes a new instance of a java Object of the type className
static int	objectIndex(int luaState, Object obj, String methodName) Java implementation of the metamethod __index

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

objectIndex

public static int objectIndex(int luaState,
                              Object obj,
                              String methodName)
                       throws LuaException

Java implementation of the metamethod __index

Parameters:

luaState - int that indicates the state used

obj - Object to be indexed

methodName - the name of the method

Returns:

number of returned objects

Throws:

LuaException

classIndex

public static int classIndex(int luaState,
                             Class clazz,
                             String searchName)
                      throws LuaException

Java function to be called when a java Class metamethod __index is called. This function returns 1 if there is a field with searchName and 2 if there is a method if the searchName

Parameters:

luaState - int that represents the state to be used

clazz - class to be indexed

searchName - name of the field or method to be accessed

Returns:

number of returned objects

Throws:

LuaException

javaNewInstance

public static int javaNewInstance(int luaState,
                                  String className)
                           throws LuaException

Pushes a new instance of a java Object of the type className

Parameters:

luaState - int that represents the state to be used

className - name of the class

Returns:

number of returned objects

Throws:

LuaException

javaNew

public static int javaNew(int luaState,
                          Class clazz)
                   throws LuaException

javaNew returns a new instance of a given clazz

Parameters:

luaState - int that represents the state to be used

clazz - class to be instanciated

Returns:

number of returned objects

Throws:

LuaException

javaLoadLib

public static int javaLoadLib(int luaState,
                              String className,
                              String methodName)
                       throws LuaException

Calls the static method methodName in class className that receives a LuaState as first parameter.

Parameters:

luaState - int that represents the state to be used

className - name of the class that has the open library method

methodName - method to open library

Returns:

number of returned objects

Throws:

LuaException

checkField

public static int checkField(int luaState,
                             Object obj,
                             String fieldName)
                      throws LuaException

Checks if there is a field on the obj with the given name

Parameters:

luaState - int that represents the state to be used

obj - object to be inspected

fieldName - name of the field to be inpected

Returns:

number of returned objects

Throws:

LuaException

checkMethod

public static int checkMethod(int luaState,
                              Object obj,
                              String methodName)

Checks to see if there is a method with the given name.

Parameters:

luaState - int that represents the state to be used

obj - object to be inspected

methodName - name of the field to be inpected

Returns:

number of returned objects

createProxyObject

public static int createProxyObject(int luaState,
                                    String implem)
                             throws LuaException

Function that creates an object proxy and pushes it into the stack

Parameters:

luaState - int that represents the state to be used

implem - interfaces implemented separated by comma (,)

Returns:

number of returned objects

Throws:

LuaException