Convert all line endings to Unix
This commit is contained in:
Enrico Horn
@@ -1,485 +1,485 @@
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/*******************************************************************************
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/*******************************************************************************
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* Copyright (c) 2009 Luaj.org. All rights reserved.
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* Copyright (c) 2009 Luaj.org. All rights reserved.
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*
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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* furnished to do so, subject to the following conditions:
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*
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*
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* The above copyright notice and this permission notice shall be included in
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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* all copies or substantial portions of the Software.
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*
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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* THE SOFTWARE.
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******************************************************************************/
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******************************************************************************/
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package org.luaj.vm2.lib;
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package org.luaj.vm2.lib;
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import java.io.IOException;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.InputStream;
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import org.luaj.vm2.Globals;
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import org.luaj.vm2.Globals;
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import org.luaj.vm2.Lua;
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import org.luaj.vm2.Lua;
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import org.luaj.vm2.LuaError;
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import org.luaj.vm2.LuaError;
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import org.luaj.vm2.LuaString;
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import org.luaj.vm2.LuaString;
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import org.luaj.vm2.LuaTable;
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import org.luaj.vm2.LuaTable;
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import org.luaj.vm2.LuaThread;
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import org.luaj.vm2.LuaThread;
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import org.luaj.vm2.LuaValue;
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import org.luaj.vm2.LuaValue;
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import org.luaj.vm2.Varargs;
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import org.luaj.vm2.Varargs;
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/**
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/**
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* Subclass of {@link LibFunction} which implements the lua basic library functions.
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* Subclass of {@link LibFunction} which implements the lua basic library functions.
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* <p>
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* <p>
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* This contains all library functions listed as "basic functions" in the lua documentation for JME.
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* This contains all library functions listed as "basic functions" in the lua documentation for JME.
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* The functions dofile and loadfile use the
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* The functions dofile and loadfile use the
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* {@link Globals#finder} instance to find resource files.
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* {@link Globals#finder} instance to find resource files.
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* Since JME has no file system by default, {@link BaseLib} implements
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* Since JME has no file system by default, {@link BaseLib} implements
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* {@link ResourceFinder} using {@link Class#getResource(String)},
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* {@link ResourceFinder} using {@link Class#getResource(String)},
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* which is the closest equivalent on JME.
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* which is the closest equivalent on JME.
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* The default loader chain in {@link PackageLib} will use these as well.
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* The default loader chain in {@link PackageLib} will use these as well.
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* <p>
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* <p>
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* To use basic library functions that include a {@link ResourceFinder} based on
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* To use basic library functions that include a {@link ResourceFinder} based on
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* directory lookup, use {@link org.luaj.vm2.lib.jse.JseBaseLib} instead.
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* directory lookup, use {@link org.luaj.vm2.lib.jse.JseBaseLib} instead.
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* <p>
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* <p>
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* Typically, this library is included as part of a call to either
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* Typically, this library is included as part of a call to either
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* {@link org.luaj.vm2.lib.jse.JsePlatform#standardGlobals()} or
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* {@link org.luaj.vm2.lib.jse.JsePlatform#standardGlobals()} or
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* {@link org.luaj.vm2.lib.jme.JmePlatform#standardGlobals()}
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* {@link org.luaj.vm2.lib.jme.JmePlatform#standardGlobals()}
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* <pre> {@code
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* <pre> {@code
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* Globals globals = JsePlatform.standardGlobals();
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* Globals globals = JsePlatform.standardGlobals();
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* globals.get("print").call(LuaValue.valueOf("hello, world"));
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* globals.get("print").call(LuaValue.valueOf("hello, world"));
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* } </pre>
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* } </pre>
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* <p>
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* <p>
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* For special cases where the smallest possible footprint is desired,
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* For special cases where the smallest possible footprint is desired,
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* a minimal set of libraries could be loaded
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* a minimal set of libraries could be loaded
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* directly via {@link Globals#load(LuaValue)} using code such as:
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* directly via {@link Globals#load(LuaValue)} using code such as:
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* <pre> {@code
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* <pre> {@code
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* Globals globals = new Globals();
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* Globals globals = new Globals();
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* globals.load(new JseBaseLib());
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* globals.load(new JseBaseLib());
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* globals.get("print").call(LuaValue.valueOf("hello, world"));
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* globals.get("print").call(LuaValue.valueOf("hello, world"));
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* } </pre>
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* } </pre>
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* Doing so will ensure the library is properly initialized
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* Doing so will ensure the library is properly initialized
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* and loaded into the globals table.
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* and loaded into the globals table.
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* <p>
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* <p>
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* This is a direct port of the corresponding library in C.
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* This is a direct port of the corresponding library in C.
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* @see org.luaj.vm2.lib.jse.JseBaseLib
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* @see org.luaj.vm2.lib.jse.JseBaseLib
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* @see ResourceFinder
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* @see ResourceFinder
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* @see Globals#finder
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* @see Globals#finder
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* @see LibFunction
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* @see LibFunction
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* @see org.luaj.vm2.lib.jse.JsePlatform
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* @see org.luaj.vm2.lib.jse.JsePlatform
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* @see org.luaj.vm2.lib.jme.JmePlatform
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* @see org.luaj.vm2.lib.jme.JmePlatform
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* @see <a href="http://www.lua.org/manual/5.2/manual.html#6.1">Lua 5.2 Base Lib Reference</a>
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* @see <a href="http://www.lua.org/manual/5.2/manual.html#6.1">Lua 5.2 Base Lib Reference</a>
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*/
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*/
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public class BaseLib extends TwoArgFunction implements ResourceFinder {
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public class BaseLib extends TwoArgFunction implements ResourceFinder {
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Globals globals;
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Globals globals;
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/** Perform one-time initialization on the library by adding base functions
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/** Perform one-time initialization on the library by adding base functions
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* to the supplied environment, and returning it as the return value.
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* to the supplied environment, and returning it as the return value.
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* @param modname the module name supplied if this is loaded via 'require'.
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* @param modname the module name supplied if this is loaded via 'require'.
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* @param env the environment to load into, which must be a Globals instance.
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* @param env the environment to load into, which must be a Globals instance.
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*/
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*/
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public LuaValue call(LuaValue modname, LuaValue env) {
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public LuaValue call(LuaValue modname, LuaValue env) {
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globals = env.checkglobals();
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globals = env.checkglobals();
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globals.finder = this;
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globals.finder = this;
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globals.baselib = this;
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globals.baselib = this;
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env.set( "_G", env );
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env.set( "_G", env );
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env.set( "_VERSION", Lua._VERSION );
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env.set( "_VERSION", Lua._VERSION );
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env.set("assert", new _assert());
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env.set("assert", new _assert());
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env.set("collectgarbage", new collectgarbage());
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env.set("collectgarbage", new collectgarbage());
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env.set("dofile", new dofile());
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env.set("dofile", new dofile());
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env.set("error", new error());
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env.set("error", new error());
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env.set("getmetatable", new getmetatable());
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env.set("getmetatable", new getmetatable());
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env.set("load", new load());
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env.set("load", new load());
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env.set("loadfile", new loadfile());
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env.set("loadfile", new loadfile());
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env.set("pcall", new pcall());
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env.set("pcall", new pcall());
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env.set("print", new print(this));
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env.set("print", new print(this));
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env.set("rawequal", new rawequal());
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env.set("rawequal", new rawequal());
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env.set("rawget", new rawget());
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env.set("rawget", new rawget());
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env.set("rawlen", new rawlen());
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env.set("rawlen", new rawlen());
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env.set("rawset", new rawset());
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env.set("rawset", new rawset());
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env.set("select", new select());
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env.set("select", new select());
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env.set("setmetatable", new setmetatable());
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env.set("setmetatable", new setmetatable());
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env.set("tonumber", new tonumber());
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env.set("tonumber", new tonumber());
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env.set("tostring", new tostring());
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env.set("tostring", new tostring());
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env.set("type", new type());
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env.set("type", new type());
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env.set("xpcall", new xpcall());
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env.set("xpcall", new xpcall());
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next next;
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next next;
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env.set("next", next = new next());
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env.set("next", next = new next());
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env.set("pairs", new pairs(next));
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env.set("pairs", new pairs(next));
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env.set("ipairs", new ipairs());
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env.set("ipairs", new ipairs());
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return env;
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return env;
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}
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}
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/** ResourceFinder implementation
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/** ResourceFinder implementation
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*
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*
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* Tries to open the file as a resource, which can work for JSE and JME.
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* Tries to open the file as a resource, which can work for JSE and JME.
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*/
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*/
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public InputStream findResource(String filename) {
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public InputStream findResource(String filename) {
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return getClass().getResourceAsStream(filename.startsWith("/")? filename: "/"+filename);
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return getClass().getResourceAsStream(filename.startsWith("/")? filename: "/"+filename);
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}
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}
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// "assert", // ( v [,message] ) -> v, message | ERR
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// "assert", // ( v [,message] ) -> v, message | ERR
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static final class _assert extends VarArgFunction {
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static final class _assert extends VarArgFunction {
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public Varargs invoke(Varargs args) {
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public Varargs invoke(Varargs args) {
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if ( !args.arg1().toboolean() )
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if ( !args.arg1().toboolean() )
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error( args.narg()>1? args.optjstring(2,"assertion failed!"): "assertion failed!" );
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error( args.narg()>1? args.optjstring(2,"assertion failed!"): "assertion failed!" );
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return args;
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return args;
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}
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}
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}
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}
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// "collectgarbage", // ( opt [,arg] ) -> value
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// "collectgarbage", // ( opt [,arg] ) -> value
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static final class collectgarbage extends VarArgFunction {
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static final class collectgarbage extends VarArgFunction {
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public Varargs invoke(Varargs args) {
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public Varargs invoke(Varargs args) {
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String s = args.optjstring(1, "collect");
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String s = args.optjstring(1, "collect");
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if ( "collect".equals(s) ) {
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if ( "collect".equals(s) ) {
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System.gc();
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System.gc();
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return ZERO;
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return ZERO;
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} else if ( "count".equals(s) ) {
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} else if ( "count".equals(s) ) {
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Runtime rt = Runtime.getRuntime();
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Runtime rt = Runtime.getRuntime();
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long used = rt.totalMemory() - rt.freeMemory();
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long used = rt.totalMemory() - rt.freeMemory();
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return varargsOf(valueOf(used/1024.), valueOf(used%1024));
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return varargsOf(valueOf(used/1024.), valueOf(used%1024));
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} else if ( "step".equals(s) ) {
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} else if ( "step".equals(s) ) {
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System.gc();
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System.gc();
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return LuaValue.TRUE;
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return LuaValue.TRUE;
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} else {
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} else {
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argerror(1, "invalid option '" + s + "'");
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argerror(1, "invalid option '" + s + "'");
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}
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}
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return NIL;
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return NIL;
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}
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}
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}
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}
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// "dofile", // ( filename ) -> result1, ...
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// "dofile", // ( filename ) -> result1, ...
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final class dofile extends VarArgFunction {
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final class dofile extends VarArgFunction {
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public Varargs invoke(Varargs args) {
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public Varargs invoke(Varargs args) {
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args.argcheck(args.isstring(1) || args.isnil(1), 1, "filename must be string or nil");
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args.argcheck(args.isstring(1) || args.isnil(1), 1, "filename must be string or nil");
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String filename = args.isstring(1)? args.tojstring(1): null;
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String filename = args.isstring(1)? args.tojstring(1): null;
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Varargs v = filename == null?
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Varargs v = filename == null?
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loadStream( globals.STDIN, "=stdin", "bt", globals ):
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loadStream( globals.STDIN, "=stdin", "bt", globals ):
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loadFile( args.checkjstring(1), "bt", globals );
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loadFile( args.checkjstring(1), "bt", globals );
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return v.isnil(1)? error(v.tojstring(2)): v.arg1().invoke();
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return v.isnil(1)? error(v.tojstring(2)): v.arg1().invoke();
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}
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}
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}
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}
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// "error", // ( message [,level] ) -> ERR
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// "error", // ( message [,level] ) -> ERR
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static final class error extends TwoArgFunction {
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static final class error extends TwoArgFunction {
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public LuaValue call(LuaValue arg1, LuaValue arg2) {
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public LuaValue call(LuaValue arg1, LuaValue arg2) {
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if (arg1.isnil()) throw new LuaError(NIL);
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if (arg1.isnil()) throw new LuaError(NIL);
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if (!arg1.isstring() || arg2.optint(1) == 0) throw new LuaError(arg1);
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if (!arg1.isstring() || arg2.optint(1) == 0) throw new LuaError(arg1);
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throw new LuaError(arg1.tojstring(), arg2.optint(1));
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throw new LuaError(arg1.tojstring(), arg2.optint(1));
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||||||
}
|
}
|
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}
|
}
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|
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// "getmetatable", // ( object ) -> table
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// "getmetatable", // ( object ) -> table
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static final class getmetatable extends LibFunction {
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static final class getmetatable extends LibFunction {
|
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public LuaValue call() {
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public LuaValue call() {
|
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return argerror(1, "value expected");
|
return argerror(1, "value expected");
|
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}
|
}
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public LuaValue call(LuaValue arg) {
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public LuaValue call(LuaValue arg) {
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LuaValue mt = arg.getmetatable();
|
LuaValue mt = arg.getmetatable();
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return mt!=null? mt.rawget(METATABLE).optvalue(mt): NIL;
|
return mt!=null? mt.rawget(METATABLE).optvalue(mt): NIL;
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
// "load", // ( ld [, source [, mode [, env]]] ) -> chunk | nil, msg
|
// "load", // ( ld [, source [, mode [, env]]] ) -> chunk | nil, msg
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final class load extends VarArgFunction {
|
final class load extends VarArgFunction {
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public Varargs invoke(Varargs args) {
|
public Varargs invoke(Varargs args) {
|
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LuaValue ld = args.arg1();
|
LuaValue ld = args.arg1();
|
||||||
if (!ld.isstring() && !ld.isfunction()) {
|
if (!ld.isstring() && !ld.isfunction()) {
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throw new LuaError("bad argument #1 to 'load' (string or function expected, got " + ld.typename() + ")");
|
throw new LuaError("bad argument #1 to 'load' (string or function expected, got " + ld.typename() + ")");
|
||||||
}
|
}
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||||||
String source = args.optjstring(2, ld.isstring()? ld.tojstring(): "=(load)");
|
String source = args.optjstring(2, ld.isstring()? ld.tojstring(): "=(load)");
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||||||
String mode = args.optjstring(3, "bt");
|
String mode = args.optjstring(3, "bt");
|
||||||
LuaValue env = args.optvalue(4, globals);
|
LuaValue env = args.optvalue(4, globals);
|
||||||
return loadStream(ld.isstring()? ld.strvalue().toInputStream():
|
return loadStream(ld.isstring()? ld.strvalue().toInputStream():
|
||||||
new StringInputStream(ld.checkfunction()), source, mode, env);
|
new StringInputStream(ld.checkfunction()), source, mode, env);
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
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||||||
// "loadfile", // ( [filename [, mode [, env]]] ) -> chunk | nil, msg
|
// "loadfile", // ( [filename [, mode [, env]]] ) -> chunk | nil, msg
|
||||||
final class loadfile extends VarArgFunction {
|
final class loadfile extends VarArgFunction {
|
||||||
public Varargs invoke(Varargs args) {
|
public Varargs invoke(Varargs args) {
|
||||||
args.argcheck(args.isstring(1) || args.isnil(1), 1, "filename must be string or nil");
|
args.argcheck(args.isstring(1) || args.isnil(1), 1, "filename must be string or nil");
|
||||||
String filename = args.isstring(1)? args.tojstring(1): null;
|
String filename = args.isstring(1)? args.tojstring(1): null;
|
||||||
String mode = args.optjstring(2, "bt");
|
String mode = args.optjstring(2, "bt");
|
||||||
LuaValue env = args.optvalue(3, globals);
|
LuaValue env = args.optvalue(3, globals);
|
||||||
return filename == null?
|
return filename == null?
|
||||||
loadStream( globals.STDIN, "=stdin", mode, env ):
|
loadStream( globals.STDIN, "=stdin", mode, env ):
|
||||||
loadFile( filename, mode, env );
|
loadFile( filename, mode, env );
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
// "pcall", // (f, arg1, ...) -> status, result1, ...
|
// "pcall", // (f, arg1, ...) -> status, result1, ...
|
||||||
final class pcall extends VarArgFunction {
|
final class pcall extends VarArgFunction {
|
||||||
public Varargs invoke(Varargs args) {
|
public Varargs invoke(Varargs args) {
|
||||||
LuaValue func = args.checkvalue(1);
|
LuaValue func = args.checkvalue(1);
|
||||||
if (globals != null && globals.debuglib != null)
|
if (globals != null && globals.debuglib != null)
|
||||||
globals.debuglib.onCall(this);
|
globals.debuglib.onCall(this);
|
||||||
try {
|
try {
|
||||||
return varargsOf(TRUE, func.invoke(args.subargs(2)));
|
return varargsOf(TRUE, func.invoke(args.subargs(2)));
|
||||||
} catch ( LuaError le ) {
|
} catch ( LuaError le ) {
|
||||||
final LuaValue m = le.getMessageObject();
|
final LuaValue m = le.getMessageObject();
|
||||||
return varargsOf(FALSE, m!=null? m: NIL);
|
return varargsOf(FALSE, m!=null? m: NIL);
|
||||||
} catch ( Exception e ) {
|
} catch ( Exception e ) {
|
||||||
final String m = e.getMessage();
|
final String m = e.getMessage();
|
||||||
return varargsOf(FALSE, valueOf(m!=null? m: e.toString()));
|
return varargsOf(FALSE, valueOf(m!=null? m: e.toString()));
|
||||||
} finally {
|
} finally {
|
||||||
if (globals != null && globals.debuglib != null)
|
if (globals != null && globals.debuglib != null)
|
||||||
globals.debuglib.onReturn();
|
globals.debuglib.onReturn();
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
// "print", // (...) -> void
|
// "print", // (...) -> void
|
||||||
final class print extends VarArgFunction {
|
final class print extends VarArgFunction {
|
||||||
final BaseLib baselib;
|
final BaseLib baselib;
|
||||||
print(BaseLib baselib) {
|
print(BaseLib baselib) {
|
||||||
this.baselib = baselib;
|
this.baselib = baselib;
|
||||||
}
|
}
|
||||||
public Varargs invoke(Varargs args) {
|
public Varargs invoke(Varargs args) {
|
||||||
LuaValue tostring = globals.get("tostring");
|
LuaValue tostring = globals.get("tostring");
|
||||||
for ( int i=1, n=args.narg(); i<=n; i++ ) {
|
for ( int i=1, n=args.narg(); i<=n; i++ ) {
|
||||||
if ( i>1 ) globals.STDOUT.print( '\t' );
|
if ( i>1 ) globals.STDOUT.print( '\t' );
|
||||||
LuaString s = tostring.call( args.arg(i) ).strvalue();
|
LuaString s = tostring.call( args.arg(i) ).strvalue();
|
||||||
globals.STDOUT.print(s.tojstring());
|
globals.STDOUT.print(s.tojstring());
|
||||||
}
|
}
|
||||||
globals.STDOUT.print('\n');
|
globals.STDOUT.print('\n');
|
||||||
return NONE;
|
return NONE;
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
||||||
// "rawequal", // (v1, v2) -> boolean
|
// "rawequal", // (v1, v2) -> boolean
|
||||||
static final class rawequal extends LibFunction {
|
static final class rawequal extends LibFunction {
|
||||||
public LuaValue call() {
|
public LuaValue call() {
|
||||||
return argerror(1, "value expected");
|
return argerror(1, "value expected");
|
||||||
}
|
}
|
||||||
public LuaValue call(LuaValue arg) {
|
public LuaValue call(LuaValue arg) {
|
||||||
return argerror(2, "value expected");
|
return argerror(2, "value expected");
|
||||||
}
|
}
|
||||||
public LuaValue call(LuaValue arg1, LuaValue arg2) {
|
public LuaValue call(LuaValue arg1, LuaValue arg2) {
|
||||||
return valueOf(arg1.raweq(arg2));
|
return valueOf(arg1.raweq(arg2));
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
// "rawget", // (table, index) -> value
|
// "rawget", // (table, index) -> value
|
||||||
static final class rawget extends TableLibFunction {
|
static final class rawget extends TableLibFunction {
|
||||||
public LuaValue call(LuaValue arg) {
|
public LuaValue call(LuaValue arg) {
|
||||||
return argerror(2, "value expected");
|
return argerror(2, "value expected");
|
||||||
}
|
}
|
||||||
public LuaValue call(LuaValue arg1, LuaValue arg2) {
|
public LuaValue call(LuaValue arg1, LuaValue arg2) {
|
||||||
return arg1.checktable().rawget(arg2);
|
return arg1.checktable().rawget(arg2);
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
||||||
// "rawlen", // (v) -> value
|
// "rawlen", // (v) -> value
|
||||||
static final class rawlen extends LibFunction {
|
static final class rawlen extends LibFunction {
|
||||||
public LuaValue call(LuaValue arg) {
|
public LuaValue call(LuaValue arg) {
|
||||||
return valueOf(arg.rawlen());
|
return valueOf(arg.rawlen());
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
// "rawset", // (table, index, value) -> table
|
// "rawset", // (table, index, value) -> table
|
||||||
static final class rawset extends TableLibFunction {
|
static final class rawset extends TableLibFunction {
|
||||||
public LuaValue call(LuaValue table) {
|
public LuaValue call(LuaValue table) {
|
||||||
return argerror(2,"value expected");
|
return argerror(2,"value expected");
|
||||||
}
|
}
|
||||||
public LuaValue call(LuaValue table, LuaValue index) {
|
public LuaValue call(LuaValue table, LuaValue index) {
|
||||||
return argerror(3,"value expected");
|
return argerror(3,"value expected");
|
||||||
}
|
}
|
||||||
public LuaValue call(LuaValue table, LuaValue index, LuaValue value) {
|
public LuaValue call(LuaValue table, LuaValue index, LuaValue value) {
|
||||||
LuaTable t = table.checktable();
|
LuaTable t = table.checktable();
|
||||||
if (!index.isvalidkey()) argerror(2, "table index is nil");
|
if (!index.isvalidkey()) argerror(2, "table index is nil");
|
||||||
t.rawset(index, value);
|
t.rawset(index, value);
|
||||||
return t;
|
return t;
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
// "select", // (f, ...) -> value1, ...
|
// "select", // (f, ...) -> value1, ...
|
||||||
static final class select extends VarArgFunction {
|
static final class select extends VarArgFunction {
|
||||||
public Varargs invoke(Varargs args) {
|
public Varargs invoke(Varargs args) {
|
||||||
int n = args.narg()-1;
|
int n = args.narg()-1;
|
||||||
if ( args.arg1().equals(valueOf("#")) )
|
if ( args.arg1().equals(valueOf("#")) )
|
||||||
return valueOf(n);
|
return valueOf(n);
|
||||||
int i = args.checkint(1);
|
int i = args.checkint(1);
|
||||||
if ( i == 0 || i < -n )
|
if ( i == 0 || i < -n )
|
||||||
argerror(1,"index out of range");
|
argerror(1,"index out of range");
|
||||||
return args.subargs(i<0? n+i+2: i+1);
|
return args.subargs(i<0? n+i+2: i+1);
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
// "setmetatable", // (table, metatable) -> table
|
// "setmetatable", // (table, metatable) -> table
|
||||||
static final class setmetatable extends TableLibFunction {
|
static final class setmetatable extends TableLibFunction {
|
||||||
public LuaValue call(LuaValue table) {
|
public LuaValue call(LuaValue table) {
|
||||||
return argerror(2,"nil or table expected");
|
return argerror(2,"nil or table expected");
|
||||||
}
|
}
|
||||||
public LuaValue call(LuaValue table, LuaValue metatable) {
|
public LuaValue call(LuaValue table, LuaValue metatable) {
|
||||||
final LuaValue mt0 = table.checktable().getmetatable();
|
final LuaValue mt0 = table.checktable().getmetatable();
|
||||||
if ( mt0!=null && !mt0.rawget(METATABLE).isnil() )
|
if ( mt0!=null && !mt0.rawget(METATABLE).isnil() )
|
||||||
error("cannot change a protected metatable");
|
error("cannot change a protected metatable");
|
||||||
return table.setmetatable(metatable.isnil()? null: metatable.checktable());
|
return table.setmetatable(metatable.isnil()? null: metatable.checktable());
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
// "tonumber", // (e [,base]) -> value
|
// "tonumber", // (e [,base]) -> value
|
||||||
static final class tonumber extends LibFunction {
|
static final class tonumber extends LibFunction {
|
||||||
public LuaValue call(LuaValue e) {
|
public LuaValue call(LuaValue e) {
|
||||||
return e.tonumber();
|
return e.tonumber();
|
||||||
}
|
}
|
||||||
public LuaValue call(LuaValue e, LuaValue base) {
|
public LuaValue call(LuaValue e, LuaValue base) {
|
||||||
if (base.isnil())
|
if (base.isnil())
|
||||||
return e.tonumber();
|
return e.tonumber();
|
||||||
final int b = base.checkint();
|
final int b = base.checkint();
|
||||||
if ( b < 2 || b > 36 )
|
if ( b < 2 || b > 36 )
|
||||||
argerror(2, "base out of range");
|
argerror(2, "base out of range");
|
||||||
return e.checkstring().tonumber(b);
|
return e.checkstring().tonumber(b);
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
// "tostring", // (e) -> value
|
// "tostring", // (e) -> value
|
||||||
static final class tostring extends LibFunction {
|
static final class tostring extends LibFunction {
|
||||||
public LuaValue call(LuaValue arg) {
|
public LuaValue call(LuaValue arg) {
|
||||||
LuaValue h = arg.metatag(TOSTRING);
|
LuaValue h = arg.metatag(TOSTRING);
|
||||||
if ( ! h.isnil() )
|
if ( ! h.isnil() )
|
||||||
return h.call(arg);
|
return h.call(arg);
|
||||||
LuaValue v = arg.tostring();
|
LuaValue v = arg.tostring();
|
||||||
if ( ! v.isnil() )
|
if ( ! v.isnil() )
|
||||||
return v;
|
return v;
|
||||||
return valueOf(arg.tojstring());
|
return valueOf(arg.tojstring());
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
// "type", // (v) -> value
|
// "type", // (v) -> value
|
||||||
static final class type extends LibFunction {
|
static final class type extends LibFunction {
|
||||||
public LuaValue call(LuaValue arg) {
|
public LuaValue call(LuaValue arg) {
|
||||||
return valueOf(arg.typename());
|
return valueOf(arg.typename());
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
// "xpcall", // (f, err) -> result1, ...
|
// "xpcall", // (f, err) -> result1, ...
|
||||||
final class xpcall extends VarArgFunction {
|
final class xpcall extends VarArgFunction {
|
||||||
public Varargs invoke(Varargs args) {
|
public Varargs invoke(Varargs args) {
|
||||||
final LuaThread t = globals.running;
|
final LuaThread t = globals.running;
|
||||||
final LuaValue preverror = t.errorfunc;
|
final LuaValue preverror = t.errorfunc;
|
||||||
t.errorfunc = args.checkvalue(2);
|
t.errorfunc = args.checkvalue(2);
|
||||||
try {
|
try {
|
||||||
if (globals != null && globals.debuglib != null)
|
if (globals != null && globals.debuglib != null)
|
||||||
globals.debuglib.onCall(this);
|
globals.debuglib.onCall(this);
|
||||||
try {
|
try {
|
||||||
return varargsOf(TRUE, args.arg1().invoke(args.subargs(3)));
|
return varargsOf(TRUE, args.arg1().invoke(args.subargs(3)));
|
||||||
} catch ( LuaError le ) {
|
} catch ( LuaError le ) {
|
||||||
final LuaValue m = le.getMessageObject();
|
final LuaValue m = le.getMessageObject();
|
||||||
return varargsOf(FALSE, m!=null? m: NIL);
|
return varargsOf(FALSE, m!=null? m: NIL);
|
||||||
} catch ( Exception e ) {
|
} catch ( Exception e ) {
|
||||||
final String m = e.getMessage();
|
final String m = e.getMessage();
|
||||||
return varargsOf(FALSE, valueOf(m!=null? m: e.toString()));
|
return varargsOf(FALSE, valueOf(m!=null? m: e.toString()));
|
||||||
} finally {
|
} finally {
|
||||||
if (globals != null && globals.debuglib != null)
|
if (globals != null && globals.debuglib != null)
|
||||||
globals.debuglib.onReturn();
|
globals.debuglib.onReturn();
|
||||||
}
|
}
|
||||||
} finally {
|
} finally {
|
||||||
t.errorfunc = preverror;
|
t.errorfunc = preverror;
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
// "pairs" (t) -> iter-func, t, nil
|
// "pairs" (t) -> iter-func, t, nil
|
||||||
static final class pairs extends VarArgFunction {
|
static final class pairs extends VarArgFunction {
|
||||||
final next next;
|
final next next;
|
||||||
pairs(next next) {
|
pairs(next next) {
|
||||||
this.next = next;
|
this.next = next;
|
||||||
}
|
}
|
||||||
public Varargs invoke(Varargs args) {
|
public Varargs invoke(Varargs args) {
|
||||||
return varargsOf( next, args.checktable(1), NIL );
|
return varargsOf( next, args.checktable(1), NIL );
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
// // "ipairs", // (t) -> iter-func, t, 0
|
// // "ipairs", // (t) -> iter-func, t, 0
|
||||||
static final class ipairs extends VarArgFunction {
|
static final class ipairs extends VarArgFunction {
|
||||||
inext inext = new inext();
|
inext inext = new inext();
|
||||||
public Varargs invoke(Varargs args) {
|
public Varargs invoke(Varargs args) {
|
||||||
return varargsOf( inext, args.checktable(1), ZERO );
|
return varargsOf( inext, args.checktable(1), ZERO );
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
// "next" ( table, [index] ) -> next-index, next-value
|
// "next" ( table, [index] ) -> next-index, next-value
|
||||||
static final class next extends VarArgFunction {
|
static final class next extends VarArgFunction {
|
||||||
public Varargs invoke(Varargs args) {
|
public Varargs invoke(Varargs args) {
|
||||||
return args.checktable(1).next(args.arg(2));
|
return args.checktable(1).next(args.arg(2));
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
// "inext" ( table, [int-index] ) -> next-index, next-value
|
// "inext" ( table, [int-index] ) -> next-index, next-value
|
||||||
static final class inext extends VarArgFunction {
|
static final class inext extends VarArgFunction {
|
||||||
public Varargs invoke(Varargs args) {
|
public Varargs invoke(Varargs args) {
|
||||||
return args.checktable(1).inext(args.arg(2));
|
return args.checktable(1).inext(args.arg(2));
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* Load from a named file, returning the chunk or nil,error of can't load
|
* Load from a named file, returning the chunk or nil,error of can't load
|
||||||
* @param env
|
* @param env
|
||||||
* @param mode
|
* @param mode
|
||||||
* @return Varargs containing chunk, or NIL,error-text on error
|
* @return Varargs containing chunk, or NIL,error-text on error
|
||||||
*/
|
*/
|
||||||
public Varargs loadFile(String filename, String mode, LuaValue env) {
|
public Varargs loadFile(String filename, String mode, LuaValue env) {
|
||||||
InputStream is = globals.finder.findResource(filename);
|
InputStream is = globals.finder.findResource(filename);
|
||||||
if ( is == null )
|
if ( is == null )
|
||||||
return varargsOf(NIL, valueOf("cannot open "+filename+": No such file or directory"));
|
return varargsOf(NIL, valueOf("cannot open "+filename+": No such file or directory"));
|
||||||
try {
|
try {
|
||||||
return loadStream(is, "@"+filename, mode, env);
|
return loadStream(is, "@"+filename, mode, env);
|
||||||
} finally {
|
} finally {
|
||||||
try {
|
try {
|
||||||
is.close();
|
is.close();
|
||||||
} catch ( Exception e ) {
|
} catch ( Exception e ) {
|
||||||
e.printStackTrace();
|
e.printStackTrace();
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
public Varargs loadStream(InputStream is, String chunkname, String mode, LuaValue env) {
|
public Varargs loadStream(InputStream is, String chunkname, String mode, LuaValue env) {
|
||||||
try {
|
try {
|
||||||
if ( is == null )
|
if ( is == null )
|
||||||
return varargsOf(NIL, valueOf("not found: "+chunkname));
|
return varargsOf(NIL, valueOf("not found: "+chunkname));
|
||||||
return globals.load(is, chunkname, mode, env);
|
return globals.load(is, chunkname, mode, env);
|
||||||
} catch (Exception e) {
|
} catch (Exception e) {
|
||||||
return varargsOf(NIL, valueOf(e.getMessage()));
|
return varargsOf(NIL, valueOf(e.getMessage()));
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
||||||
private static class StringInputStream extends InputStream {
|
private static class StringInputStream extends InputStream {
|
||||||
final LuaValue func;
|
final LuaValue func;
|
||||||
byte[] bytes;
|
byte[] bytes;
|
||||||
int offset, remaining = 0;
|
int offset, remaining = 0;
|
||||||
StringInputStream(LuaValue func) {
|
StringInputStream(LuaValue func) {
|
||||||
this.func = func;
|
this.func = func;
|
||||||
}
|
}
|
||||||
public int read() throws IOException {
|
public int read() throws IOException {
|
||||||
if ( remaining < 0 )
|
if ( remaining < 0 )
|
||||||
return -1;
|
return -1;
|
||||||
if ( remaining == 0 ) {
|
if ( remaining == 0 ) {
|
||||||
LuaValue s = func.call();
|
LuaValue s = func.call();
|
||||||
if ( s.isnil() )
|
if ( s.isnil() )
|
||||||
return remaining = -1;
|
return remaining = -1;
|
||||||
LuaString ls = s.strvalue();
|
LuaString ls = s.strvalue();
|
||||||
bytes = ls.m_bytes;
|
bytes = ls.m_bytes;
|
||||||
offset = ls.m_offset;
|
offset = ls.m_offset;
|
||||||
remaining = ls.m_length;
|
remaining = ls.m_length;
|
||||||
if (remaining <= 0)
|
if (remaining <= 0)
|
||||||
return -1;
|
return -1;
|
||||||
}
|
}
|
||||||
--remaining;
|
--remaining;
|
||||||
return 0xFF&bytes[offset++];
|
return 0xFF&bytes[offset++];
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|||||||
Reference in New Issue
Block a user