Examples of org.luaj.vm2.LuaClosure

org.luaj.vm2.lib.ZeroArgFunction
Extension of {@link LuaFunction} which executes lua bytecode.
A {@link LuaClosure} is a combination of a {@link Prototype} and a {@link LuaValue} to use as an environment for execution.
There are three main ways {@link LuaClosure} instances are created:
- Construct an instance using {@link #LuaClosure(Prototype,LuaValue)}
- Construct it indirectly by loading a chunk via {@link LuaCompiler#load(java.io.InputStream,String,LuaValue)}
- Execute the lua bytecode {@link Lua#OP_CLOSURE} as part of bytecode processing
To construct it directly, the {@link Prototype} is typically created via a compiler such as {@link LuaC}:
```
  {@code InputStream is = new ByteArrayInputStream("print('hello,world').getBytes()); Prototype p = LuaC.instance.compile(is, "script"); LuaValue _G = JsePlatform.standardGlobals() LuaClosure f = new LuaClosure(p, _G);}
```
To construct it indirectly, the {@link LuaC} compiler may be used, which implements the {@link LuaCompiler} interface:
```
  {@code LuaFunction f = LuaC.instance.load(is, "script", _G);}
```
Typically, a closure that has just been loaded needs to be initialized by executing it, and its return value can be saved if needed:
```
  {@code LuaValue r = f.call(); _G.set( "mypkg", r ) }
```
In the preceding, the loaded value is typed as {@link LuaFunction} to allow for the possibility of other compilers such as {@link LuaJC}producing {@link LuaFunction} directly without creating a {@link Prototype} or {@link LuaClosure}.
Since a {@link LuaClosure} is a {@link LuaFunction} which is a {@link LuaValue}, all the value operations can be used directly such as:
- {@link LuaValue#setfenv(LuaValue)}
- {@link LuaValue#call()}
- {@link LuaValue#call(LuaValue)}
- {@link LuaValue#invoke()}
- {@link LuaValue#invoke(Varargs)}
- {@link LuaValue#method(String)}
- {@link LuaValue#method(String,LuaValue)}
- {@link LuaValue#invokemethod(String)}
- {@link LuaValue#invokemethod(String,Varargs)}
- ...
@see LuaValue @see LuaFunction @see LuaValue#isclosure() @see LuaValue#checkclosure() @see LuaValue#optclosure(LuaClosure) @see LoadState @see LoadState#compiler

            }
        };
    }


    private LuaValue newTitle() {
        return new TwoArgFunction() {
            /**
             * Handler for title.new
             *
             * @param text_or_id       string|int Title or page_id to fetch
             * @param defaultNamespace string|int Namespace name or number to use if $text_or_id doesn't override

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            }
        };
    }


    private LuaValue pagesInCategory() {
        return new TwoArgFunction() {
            @Override public LuaValue call(LuaValue category, LuaValue which) {
                return LuaValue.valueOf(0);
            }
        };
    }

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            }
        };
    }


    private LuaValue canonicalUrl() {
        return new TwoArgFunction() {
            @Override
            public LuaValue call(LuaValue page, LuaValue query) {
                if (query.isnil()) {
                    return LuaValue.valueOf(wgCanonicalServer + pagePath(page));
                } else {

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            }
        };
    }


    private LuaValue fullUrl() {
        return new TwoArgFunction() {
            @Override
            public LuaValue call(LuaValue page, LuaValue query) {
                if (query.isnil()) {
                    return LuaValue.valueOf(wgServer + pagePath(page));
                } else {

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            }
        };
    }


    private LuaValue localUrl() {
        return new TwoArgFunction() {
            @Override
            public LuaValue call(LuaValue page, LuaValue query) {
                if (query.isnil()) {
                    return LuaValue.valueOf(pagePath(page));
                } else {

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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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            }
        };
    }


    private LuaValue isSubsting() {
        return new ZeroArgFunction() {
            @Override public LuaValue call() {
                // TODO
                return FALSE;
            }
        };

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            }
        };
    }


    private LuaValue incrementExpensiveFunctionCount() {
        return new ZeroArgFunction() {
            @Override public LuaValue call() {
                if (++expensiveFunctionCount > MAX_EXPENSIVE_CALLS) {
                    error("too many expensive function calls");
                }
                return NIL;

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            }
        };
    }


    private LuaValue getContLangCode() {
        return new ZeroArgFunction() {
            @Override
            public LuaValue call() {
                return valueOf("en");
            }
        };

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        table.set("getEntityTable", getEntityTable());
        return table;
    }


    private LuaValue getEntityTable() {
        return new ZeroArgFunction() {
            @Override
            public LuaValue call() {
                return NIL;
            }
        };

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