/*
* Copyright (C) 2003-2007 Kepler Project.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package org.keplerproject.luajava.test;
import java.util.Collection;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import org.keplerproject.luajava.LuaException;
import org.keplerproject.luajava.LuaObject;
import org.keplerproject.luajava.LuaState;
import org.keplerproject.luajava.LuaStateFactory;
import junit.framework.TestCase;
/**
* Implementation of a java.util.Map in Lua.<br>
* The Map is implemented inside Java, using Lua to store the data and
* inside Lua, used with a proxy.
* This test uses junit.
*
* @author thiago
*/
public class TestLuaMap extends TestCase
{
public void testMap() throws ClassNotFoundException, LuaException
{
Map table = new HashMap();
table.put("testTable2-1", "testTable2Value");
table.put("testTable2-2", new Object());
// test using a java accessed table.
Map luaMap = new LuaMap();
luaMap.put("test", "testValue");
luaMap.putAll(table);
assertTrue(luaMap.containsKey("test"));
assertTrue(luaMap.containsKey("testTable2-1"));
System.out.println(luaMap.get("testTable2-2"));
assertTrue(luaMap.containsValue("testValue"));
assertEquals(3, luaMap.size());
luaMap.remove("test");
assertNull(luaMap.get("test"));
luaMap.clear();
assertEquals(luaMap.size(), 0);
// test using a lua table
LuaState L = LuaStateFactory.newLuaState();
L.openLibs();
int err = L.LdoFile("testMap.lua");
if(err != 0)
{
switch (err)
{
case 1 :
System.out.println("Runtime error. " + L.toString(-1));
break;
case 2 :
System.out.println("File not found. " + L.toString(-1));
break;
case 3 :
System.out.println("Syntax error. " + L.toString(-1));
break;
case 4 :
System.out.println("Memory error. " + L.toString(-1));
break;
default :
System.out.println("Error. " + L.toString(-1));
break;
}
}
L.getGlobal("map");
luaMap = (Map) L.getLuaObject(-1).createProxy("java.util.Map");
L.pop(1);
luaMap.put("test", "testValue");
luaMap.putAll(table);
assertTrue(luaMap.containsKey("test"));
assertTrue(luaMap.containsKey("testTable2-1"));
System.out.println(luaMap.get("testTable2-2"));
assertTrue(luaMap.containsValue("testValue"));
assertEquals(3, luaMap.size());
luaMap.remove("test");
assertNull(luaMap.get("test"));
luaMap.clear();
assertEquals(luaMap.size(), 0);
}
}
/**
* Class that implements a Map that stores the information in Lua
*
* @author thiago
*/
class LuaMap implements Map
{
private LuaState L;
private LuaObject table;
/**
* Initializes the Luastate used and the table
*/
public LuaMap()
{
L = LuaStateFactory.newLuaState();
L.openLibs();
L.newTable();
table = L.getLuaObject(-1);
L.pop(1);
}
protected void finalize() throws Throwable
{
super.finalize();
L.close();
}
/**
* @see java.util.Map#size()
*/
public int size()
{
table.push();
L.pushNil();
int n;
for (n = 0; L.next(-2) != 0; n++)L.pop(1);
L.pop(2);
return n;
}
/**
* @see java.util.Map#clear()
*/
public void clear()
{
L.newTable();
table = L.getLuaObject(-1);
L.pop(1);
}
/**
* @see java.util.Map#isEmpty()
*/
public boolean isEmpty()
{
return size() == 0;
}
/**
* @see java.util.Map#containsKey(java.lang.Object)
*/
public boolean containsKey(Object key)
{
try
{
L.pushObjectValue(key);
LuaObject obj = L.getLuaObject(-1);
L.pop(1);
LuaObject temp = L.getLuaObject(table, obj);
return !temp.isNil();
}
catch (LuaException e)
{
return false;
}
}
/**
* @see java.util.Map#containsValue(java.lang.Object)
*/
public boolean containsValue(Object value)
{
try
{
L.pushObjectValue(value);
table.push();
L.pushNil();
while(L.next(-2) != 0)/* `key' is at index -2 and `value' at index -1 */
{
if (L.equal(-4, -1) != 0)
{
L.pop(4);
return true;
}
L.pop(1);
}
L.pop(3);
return false;
}
catch (LuaException e)
{
return false;
}
}
/**
* not implemented
* @see java.util.Map#values()
*/
public Collection values()
{
throw new RuntimeException("not implemented");
}
/**
* @see java.util.Map#putAll(java.util.Map)
*/
public void putAll(Map t)
{
Iterator i = t.keySet().iterator();
while(i.hasNext())
{
Object key = i.next();
put(key, t.get(key));
}
}
/**
* @see java.util.Map#entrySet()
*/
public Set entrySet()
{
throw new RuntimeException("not implemented");
}
/**
* @see java.util.Map#keySet()
*/
public Set keySet()
{
throw new RuntimeException("not implemented");
}
/**
* @see java.util.Map#get(java.lang.Object)
*/
public Object get(Object key)
{
try
{
table.push();
L.pushObjectValue(key);
L.getTable(-2);
Object ret = L.toJavaObject(-1);
L.pop(2);
return ret;
}
catch(LuaException e)
{
return null;
}
}
/**
* @see java.util.Map#remove(java.lang.Object)
*/
public Object remove(Object key)
{
try
{
Object ret = get(key);
table.push();
L.pushObjectValue(key);
L.pushNil();
L.setTable(-3);
L.pop(2);
return ret;
}
catch(LuaException e)
{
return null;
}
}
/**
* @see java.util.Map#put(java.lang.Object, java.lang.Object)
*/
public Object put(Object key, Object value)
{
try
{
Object ret = get(key);
table.push();
L.pushObjectValue(key);
L.pushObjectValue(value);
L.setTable(-3);
L.pop(1);
return ret;
}
catch(LuaException e)
{
return null;
}
}
}