org.luaj.vm2

类 LuaBoolean

java.lang.Object

org.luaj.vm2.Varargs

org.luaj.vm2.LuaValue

org.luaj.vm2.LuaBoolean

public final class LuaBoolean
extends LuaValue

Extension of LuaValue which can hold a Java boolean as its value.

These instance are not instantiated directly by clients. Instead, there are exactly twon instances of this class, LuaValue.TRUE and LuaValue.FALSE representing the lua values true and false. The function LuaValue.valueOf(boolean) will always return one of these two values.

Any LuaValue can be converted to its equivalent boolean representation using LuaValue.toboolean()

另请参阅:

LuaValue, LuaValue.valueOf(boolean), LuaValue.TRUE, LuaValue.FALSE

字段概要

字段

限定符和类型	字段和说明
static LuaValue	s_metatable Shared static metatable for boolean values represented in lua.
boolean	v The value of the boolean

从类继承的字段 org.luaj.vm2.LuaValue

ADD, BAND, BNOT, BOR, BXOR, CALL, CONCAT, DIV, EMPTYSTRING, ENV, EQ, FALSE, IDIV, INDEX, LE, LEN, LT, METATABLE, MINUSONE, MOD, MODE, MUL, NEWINDEX, NIL, NILS, NONE, NOVALS, ONE, POW, SHL, SHR, SUB, TBOOLEAN, TFUNCTION, TINT, TLIGHTUSERDATA, TNIL, TNONE, TNUMBER, TOSTRING, TRUE, TSTRING, TTABLE, TTHREAD, TUSERDATA, TVALUE, TYPE_NAMES, UNM, uservalue, ZERO

方法概要

限定符和类型	方法和说明
boolean	booleanValue() Return the boolean value for this boolean
boolean	checkboolean() Check that the value is a LuaBoolean, or throw LuaError if not
LuaValue	getmetatable() Get the metatable for this LuaValue For LuaTable and LuaUserdata instances, the metatable returned is this instance metatable.
boolean	isboolean() Check if this is a boolean
LuaValue	not() Unary not: return inverse boolean value (~this) as defined by lua not operator
boolean	optboolean(boolean defval) Check that optional argument is a boolean and return its boolean value
boolean	toboolean() Convert to boolean false if LuaValue.NIL or LuaValue.FALSE, true if anything else
String	tojstring() Convert to human readable String for any type.
int	type() Get the enumeration value for the type of this value.
String	typename() Get the String name of the type of this value.

从类继承的方法 org.luaj.vm2.LuaValue

add, add, add, and, arg, arg1, argerror, argerror, aritherror, aritherror, arithmt, arithmtwith, assert_, band, band, bnot, bor, bor, buffer, bxor, bxor, call, call, call, call, call, callmt, checkclosure, checkdouble, checkfunction, checkglobals, checkint, checkinteger, checkjstring, checklong, checkmetatag, checknotnil, checknumber, checknumber, checkstring, checktable, checkthread, checkuserdata, checkuserdata, compareerror, compareerror, comparemt, concat, concat, concatmt, concatTo, concatTo, concatTo, div, div, div, divInto, eq_b, eq, eqmtcall, equals, error, get, get, get, getfenv, gettable, getuservalue, gt_b, gt_b, gt_b, gt, gt, gt, gteq_b, gteq_b, gteq_b, gteq, gteq, gteq, idiv, idiv, illegal, inext, initupvalue1, invoke, invoke, invoke, invoke, invoke, invoke, invokemethod, invokemethod, invokemethod, invokemethod, invokemethod, invokemethod, isclosure, isfunction, isint, isinttype, islong, isnil, isnumber, isstring, istable, isthread, isuserdata, isuserdata, isvalidkey, jcall, jget, jset, len, lenerror, length, listOf, listOf, load, lt_b, lt_b, lt_b, lt, lt, lt, lteq_b, lteq_b, lteq_b, lteq, lteq, lteq, metatableOf, metatag, method, method, method, method, method, method, mod, mod, mod, modFrom, mul, mul, mul, narg, neg, neq_b, neq, next, onInvoke, optclosure, optdouble, optfunction, optint, optinteger, optjstring, optlong, optnumber, optstring, opttable, optthread, optuserdata, optuserdata, optvalue, or, pow, pow, pow, powWith, powWith, presize, raweq, raweq, raweq, raweq, raweq, rawget, rawget, rawget, rawlen, rawset, rawset, rawset, rawset, rawset, rawset, rawset, rawsetlist, set, set, set, set, set, set, set, setfenv, setmetatable, settable, setuservalue, shl, shl, shr, shr, strcmp, strcmp, strongvalue, strvalue, sub, sub, sub, subargs, subFrom, subFrom, tableOf, tableOf, tableOf, tableOf, tableOf, tableOf, tailcallOf, testfor_b, tobyte, tochar, todouble, tofloat, toint, tolong, tonumber, toshort, tostring, toString, touserdata, touserdata, typerror, unimplemented, userdataOf, userdataOf, valueOf, valueOf, valueOf, valueOf, valueOf, valueOf, valueOf, varargsOf, varargsOf, varargsOf, varargsOf, varargsOf, varargsOf

从类继承的方法 org.luaj.vm2.Varargs

argcheck, checkboolean, checkclosure, checkdouble, checkfunction, checkint, checkinteger, checkjstring, checklong, checknotnil, checknumber, checkstring, checktable, checkthread, checkuserdata, checkuserdata, checkvalue, dealias, eval, isfunction, isnil, isnoneornil, isnumber, isstring, istable, isTailcall, isthread, isuserdata, isvalue, optboolean, optclosure, optdouble, optfunction, optint, optinteger, optjstring, optlong, optnumber, optstring, opttable, optthread, optuserdata, optuserdata, optvalue, toboolean, tobyte, tochar, todouble, tofloat, toint, tojstring, tolong, toshort, touserdata, touserdata, type

从类继承的方法 java.lang.Object

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

字段详细资料

s_metatable

public static LuaValue s_metatable

Shared static metatable for boolean values represented in lua.

v

public final boolean v

The value of the boolean

方法详细资料

type

public int type()

从类复制的说明: LuaValue

Get the enumeration value for the type of this value.

指定者:

type 在类中 LuaValue

返回:

value for this type, one of LuaValue.TNIL, LuaValue.TBOOLEAN, LuaValue.TNUMBER, LuaValue.TSTRING, LuaValue.TTABLE, LuaValue.TFUNCTION, LuaValue.TUSERDATA, LuaValue.TTHREAD

另请参阅:

LuaValue.typename()

typename

public String typename()

从类复制的说明: LuaValue

Get the String name of the type of this value.

指定者:

typename 在类中 LuaValue

返回:

name from type name list LuaValue.TYPE_NAMES corresponding to the type of this value: "nil", "boolean", "number", "string", "table", "function", "userdata", "thread"

另请参阅:

LuaValue.type()

isboolean

public boolean isboolean()

从类复制的说明: LuaValue

Check if this is a boolean

覆盖:

isboolean 在类中 LuaValue

返回:

true if this is a boolean, otherwise false

另请参阅:

LuaValue.isboolean(), LuaValue.toboolean(), LuaValue.checkboolean(), LuaValue.optboolean(boolean), LuaValue.TBOOLEAN

not

public LuaValue not()

从类复制的说明: LuaValue

Unary not: return inverse boolean value (~this) as defined by lua not operator

覆盖:

not 在类中 LuaValue

返回:

LuaValue.TRUE if LuaValue.NIL or LuaValue.FALSE, otherwise LuaValue.FALSE

booleanValue

public boolean booleanValue()

Return the boolean value for this boolean

返回:

value as a Java boolean

toboolean

public boolean toboolean()

从类复制的说明: LuaValue

Convert to boolean false if LuaValue.NIL or LuaValue.FALSE, true if anything else

覆盖:

toboolean 在类中 LuaValue

返回:

Value cast to byte if number or string convertible to number, otherwise 0

另请参阅:

LuaValue.optboolean(boolean), LuaValue.checkboolean(), LuaValue.isboolean(), LuaValue.TBOOLEAN

tojstring

public String tojstring()

从类复制的说明: LuaValue

Convert to human readable String for any type.

覆盖:

tojstring 在类中 LuaValue

返回:

String for use by human readers based on type.

另请参阅:

LuaValue.tostring(), LuaValue.optjstring(String), LuaValue.checkjstring(), LuaValue.isstring(), LuaValue.TSTRING

optboolean

public boolean optboolean(boolean defval)

从类复制的说明: LuaValue

Check that optional argument is a boolean and return its boolean value

覆盖:

optboolean 在类中 LuaValue

参数:

defval - boolean value to return if this is nil or none

返回:

this cast to boolean if a LuaBoolean, defval if nil or none, throws LuaError otherwise

另请参阅:

LuaValue.checkboolean(), LuaValue.isboolean(), LuaValue.TBOOLEAN

checkboolean

public boolean checkboolean()

从类复制的说明: LuaValue

Check that the value is a LuaBoolean, or throw LuaError if not

覆盖:

checkboolean 在类中 LuaValue

返回:

boolean value for this if it is a LuaBoolean

另请参阅:

LuaValue.optboolean(boolean), LuaValue.TBOOLEAN

getmetatable

public LuaValue getmetatable()

从类复制的说明: LuaValue

Get the metatable for this LuaValue

For LuaTable and LuaUserdata instances, the metatable returned is this instance metatable. For all other types, the class metatable value will be returned.

覆盖:

getmetatable 在类中 LuaValue

返回:

metatable, or null if it there is none

另请参阅:

s_metatable, LuaNumber.s_metatable, LuaNil.s_metatable, LuaFunction.s_metatable, LuaThread.s_metatable