org.luaj.vm2.compiler

类 DumpState

java.lang.Object

org.luaj.vm2.compiler.DumpState

public class DumpState
extends Object

Class to dump a Prototype into an output stream, as part of compiling.

Generally, this class is not used directly, but rather indirectly via a command line interface tool such as luac.

A lua binary file is created via dump(org.luaj.vm2.Prototype, java.io.OutputStream, boolean):

 
 Globals globals = JsePlatform.standardGlobals();
 Prototype p = globals.compilePrototype(new StringReader("print('hello, world')"), "main.lua");
 ByteArrayOutputStream o = new ByteArrayOutputStream();
 DumpState.dump(p, o, false);
 byte[] lua_binary_file_bytes = o.toByteArray();
  

The LoadState may be used directly to undump these bytes:

 
 Prototypep = LoadState.instance.undump(new ByteArrayInputStream(lua_binary_file_bytes), "main.lua");
 LuaClosure c = new LuaClosure(p, globals);
 c.call();
  

More commonly, the Globals.undumper may be used to undump them:

 
 Prototype p = globals.loadPrototype(new ByteArrayInputStream(lua_binary_file_bytes), "main.lua", "b");
 LuaClosure c = new LuaClosure(p, globals);
 c.call();
  

另请参阅:

luac, LoadState, Globals, Prototype

字段概要

字段

限定符和类型	字段和说明
static boolean	ALLOW_INTEGER_CASTING set true to allow integer compilation
static int	NUMBER_FORMAT_DEFAULT default number format
static int	NUMBER_FORMAT_FLOATS_OR_DOUBLES format corresponding to non-number-patched lua, all numbers are floats or doubles
static int	NUMBER_FORMAT_INTS_ONLY format corresponding to non-number-patched lua, all numbers are ints
static int	NUMBER_FORMAT_NUM_PATCH_INT32 format corresponding to number-patched lua, all numbers are 32-bit (4 byte) ints

构造器概要

构造器

构造器和说明
DumpState(OutputStream w, boolean strip)

方法概要

限定符和类型	方法和说明
static int	dump(Prototype f, OutputStream w, boolean strip)
static int	dump(Prototype f, OutputStream w, boolean stripDebug, int numberFormat, boolean littleendian)

从类继承的方法 java.lang.Object

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

字段详细资料

ALLOW_INTEGER_CASTING

public static boolean ALLOW_INTEGER_CASTING

set true to allow integer compilation

NUMBER_FORMAT_FLOATS_OR_DOUBLES

public static final int NUMBER_FORMAT_FLOATS_OR_DOUBLES

format corresponding to non-number-patched lua, all numbers are floats or doubles

另请参阅:

常量字段值

NUMBER_FORMAT_INTS_ONLY

public static final int NUMBER_FORMAT_INTS_ONLY

format corresponding to non-number-patched lua, all numbers are ints

另请参阅:

常量字段值

NUMBER_FORMAT_NUM_PATCH_INT32

public static final int NUMBER_FORMAT_NUM_PATCH_INT32

format corresponding to number-patched lua, all numbers are 32-bit (4 byte) ints

另请参阅:

常量字段值

NUMBER_FORMAT_DEFAULT

public static final int NUMBER_FORMAT_DEFAULT

default number format

另请参阅:

常量字段值

构造器详细资料

DumpState

public DumpState(OutputStream w,
                 boolean strip)

方法详细资料

dump

public static int dump(Prototype f,
                       OutputStream w,
                       boolean strip)
                throws IOException

抛出:

IOException

dump

public static int dump(Prototype f,
                       OutputStream w,
                       boolean stripDebug,
                       int numberFormat,
                       boolean littleendian)
                throws IOException

参数:

f - the function to dump

w - the output stream to dump to

stripDebug - true to strip debugging info, false otherwise

numberFormat - one of NUMBER_FORMAT_FLOATS_OR_DOUBLES, NUMBER_FORMAT_INTS_ONLY, NUMBER_FORMAT_NUM_PATCH_INT32

littleendian - true to use little endian for numbers, false for big endian

返回:

0 if dump succeeds

抛出:

IOException

IllegalArgumentException - if the number format it not supported