lua

package module
v1.6.0 Latest Latest
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 Go to latest Published: Jan 7, 2023 License: MIT Imports: 24 Imported by: 33

README

Lua VM in go

Note This is a FORK of yuin/gopher-lua with some tweaks that useful only in the context of awirix

Documentation

Overview

GopherLua: VM and compiler for Lua in Go

Index

Constants

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const (
	VarArgHasArg   uint8 = 1
	VarArgIsVarArg uint8 = 2
	VarArgNeedsArg uint8 = 4
)
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const (
	// BaseLibName is here for consistency; the base functions have no namespace/library.
	BaseLibName = ""
	// LoadLibName is here for consistency; the loading system has no namespace/library.
	LoadLibName = "package"
	// TabLibName is the name of the table Library.
	TabLibName = "table"
	// IoLibName is the name of the io Library.
	IoLibName = "io"
	// OsLibName is the name of the os Library.
	OsLibName = "os"
	// StringLibName is the name of the string Library.
	StringLibName = "string"
	// MathLibName is the name of the math Library.
	MathLibName = "math"
	// DebugLibName is the name of the debug Library.
	DebugLibName = "debug"
	// ChannelLibName is the name of the channel Library.
	ChannelLibName = "channel"
	// CoroutineLibName is the name of the coroutine Library.
	CoroutineLibName = "coroutine"
)
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const (
	OP_MOVE     int = iota /*      A B     R(A) := R(B)                            */
	OP_MOVEN               /*      A B     R(A) := R(B); followed by R(C) MOVE ops */
	OP_LOADK               /*     A Bx    R(A) := Kst(Bx)                          */
	OP_LOADBOOL            /*  A B C   R(A) := (Bool)B; if (C) pc++                */
	OP_LOADNIL             /*   A B     R(A) := ... := R(B) := nil                 */
	OP_GETUPVAL            /*  A B     R(A) := UpValue[B]                          */

	OP_GETGLOBAL  /* A Bx    R(A) := Gbl[Kst(Bx)]                            */
	OP_GETTABLE   /*  A B C   R(A) := R(B)[RK(C)]                             */
	OP_GETTABLEKS /*  A B C   R(A) := R(B)[RK(C)] ; RK(C) is constant string */

	OP_SETGLOBAL  /* A Bx    Gbl[Kst(Bx)] := R(A)                            */
	OP_SETUPVAL   /*  A B     UpValue[B] := R(A)                              */
	OP_SETTABLE   /*  A B C   R(A)[RK(B)] := RK(C)                            */
	OP_SETTABLEKS /*  A B C   R(A)[RK(B)] := RK(C) ; RK(B) is constant string */

	OP_NEWTABLE /*  A B C   R(A) := {} (size = BC)                         */

	OP_SELF /*      A B C   R(A+1) := R(B); R(A) := R(B)[RK(C)]             */

	OP_ADD /*       A B C   R(A) := RK(B) + RK(C)                           */
	OP_SUB /*       A B C   R(A) := RK(B) - RK(C)                           */
	OP_MUL /*       A B C   R(A) := RK(B) * RK(C)                           */
	OP_DIV /*       A B C   R(A) := RK(B) / RK(C)                           */
	OP_MOD /*       A B C   R(A) := RK(B) % RK(C)                           */
	OP_POW /*       A B C   R(A) := RK(B) ^ RK(C)                           */
	OP_UNM /*       A B     R(A) := -R(B)                                   */
	OP_NOT /*       A B     R(A) := not R(B)                                */
	OP_LEN /*       A B     R(A) := length of R(B)                          */

	OP_CONCAT /*    A B C   R(A) := R(B).. ... ..R(C)                       */

	OP_JMP /*       sBx     pc+=sBx                                 */

	OP_EQ /*        A B C   if ((RK(B) == RK(C)) ~= A) then pc++            */
	OP_LT /*        A B C   if ((RK(B) <  RK(C)) ~= A) then pc++            */
	OP_LE /*        A B C   if ((RK(B) <= RK(C)) ~= A) then pc++            */

	OP_TEST    /*      A C     if not (R(A) <=> C) then pc++                   */
	OP_TESTSET /*   A B C   if (R(B) <=> C) then R(A) := R(B) else pc++     */

	OP_CALL     /*      A B C   R(A) ... R(A+C-2) := R(A)(R(A+1) ... R(A+B-1)) */
	OP_TAILCALL /*  A B C   return R(A)(R(A+1) ... R(A+B-1))              */
	OP_RETURN   /*    A B     return R(A) ... R(A+B-2)      (see note)      */

	OP_FORLOOP /*   A sBx   R(A)+=R(A+2);
	     if R(A) <?= R(A+1) then { pc+=sBx; R(A+3)=R(A) }*/
	OP_FORPREP /*   A sBx   R(A)-=R(A+2); pc+=sBx                           */

	OP_TFORLOOP /*  A C     R(A+3) ... R(A+3+C) := R(A)(R(A+1) R(A+2));
	    if R(A+3) ~= nil then { pc++; R(A+2)=R(A+3); }  */
	OP_SETLIST /*   A B C   R(A)[(C-1)*FPF+i] := R(A+i) 1 <= i <= B        */

	OP_CLOSE   /*     A       close all variables in the stack up to (>=) R(A)*/
	OP_CLOSURE /*   A Bx    R(A) := closure(KPROTO[Bx] R(A) ... R(A+n))  */

	OP_VARARG /*     A B     R(A) R(A+1) ... R(A+B-1) = vararg            */

	OP_NOP /* NOP */
)
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const EnvironIndex = -10001
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const FramesPerSegment = 8

FramesPerSegment should be a power of 2 constant for performance reasons. It will allow the go compiler to change the divs and mods into bitshifts. Max is 256 due to current use of uint8 to count how many frames in a segment are used.

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const GlobalsIndex = -10002
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const LNumberBit = 64
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const LNumberScanFormat = "%f"
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const LuaVersion = "Lua 5.1"
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const MultRet = -1
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const PackageAuthors = "Yusuke Inuzuka"
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const PackageCopyRight = PackageName + " " + PackageVersion + " Copyright (C) 2015 -2017 " + PackageAuthors
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const PackageName = "GopherLua"
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const PackageVersion = "0.1"
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const RegistryIndex = -10000

Variables

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var CallStackSize = 256
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var CompatVarArg = true
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var FieldsPerFlush = 50
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var LFalse = LBool(false)
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var LNil = LValue(&LNilType{})
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var LTrue = LBool(true)
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var LuaDirSep string
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var LuaExecDir = "!"
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var LuaIgMark = "-"
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var LuaLDir string
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var LuaOS string
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var LuaPath = "LUA_PATH"
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var LuaPathDefault string
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var LuaPathMark = "?"
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var LuaPathSep = ";"
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var MaxArrayIndex = 67108864
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var MaxTableGetLoop = 100
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var RegistryGrowStep = 32
View Source 
var RegistrySize = 256 * 20

Functions

func LVAsBool 

func LVAsBool(v LValue) bool

LVIsFalse returns false if a given LValue is a nil or false otherwise true.

func LVAsString 

func LVAsString(v LValue) string

LVAsString returns string representation of a given LValue if the LValue is a string or number, otherwise an empty string.

func LVCanConvToString 

func LVCanConvToString(v LValue) bool

LVCanConvToString returns true if a given LValue is a string or number otherwise false.

func LVIsFalse 

func LVIsFalse(v LValue) bool

LVIsFalse returns true if a given LValue is a nil or false otherwise false.

func OpenBase 

func OpenBase(L *LState) int

func OpenChannel 

func OpenChannel(L *LState) int

func OpenCoroutine 

func OpenCoroutine(L *LState) int

func OpenDebug 

func OpenDebug(L *LState) int

func OpenIo 

func OpenIo(L *LState) int

func OpenMath 

func OpenMath(L *LState) int

func OpenOs 

func OpenOs(L *LState) int

func OpenPackage 

func OpenPackage(L *LState) int

func OpenString 

func OpenString(L *LState) int

func OpenTable 

func OpenTable(L *LState) int

func UpvalueIndex 

func UpvalueIndex(i int) int

Types

type ApiError 

type ApiError struct {
	Type       ApiErrorType
	Object     LValue
	StackTrace string
	// Underlying error. This attribute is set only if the Type is ApiErrorFile or ApiErrorSyntax
	Cause error
}

func (*ApiError) Error 

func (e *ApiError) Error() string

type ApiErrorType 

type ApiErrorType int
const (
	ApiErrorSyntax ApiErrorType = iota
	ApiErrorFile
	ApiErrorRun
	ApiErrorError
	ApiErrorPanic
)

type CompileError 

type CompileError struct {
	Line    int
	Message string
	// contains filtered or unexported fields
}

func (*CompileError) Error 

func (e *CompileError) Error() string

type DbgCall 

type DbgCall struct {
	Name string
	Pc   int
}

type DbgLocalInfo 

type DbgLocalInfo struct {
	Name    string
	StartPc int
	EndPc   int
}

type Debug 

type Debug struct {
	Name            string
	What            string
	Source          string
	CurrentLine     int
	NUpvalues       int
	LineDefined     int
	LastLineDefined int
	// contains filtered or unexported fields
}

type FunctionProto 

type FunctionProto struct {
	SourceName         string
	LineDefined        int
	LastLineDefined    int
	NumUpvalues        uint8
	NumParameters      uint8
	IsVarArg           uint8
	NumUsedRegisters   uint8
	Code               []uint32
	Constants          []LValue
	FunctionPrototypes []*FunctionProto

	DbgSourcePositions []int
	DbgLocals          []*DbgLocalInfo
	DbgCalls           []DbgCall
	DbgUpvalues        []string
	// contains filtered or unexported fields
}

func Compile 

func Compile(chunk []ast.Stmt, name string) (proto *FunctionProto, err error)

func (*FunctionProto) String 

func (fp *FunctionProto) String() string

type Global 

type Global struct {
	MainThread    *LState
	CurrentThread *LState
	Registry      *LTable
	Global        *LTable
	// contains filtered or unexported fields
}

type LBool 

type LBool bool

func (LBool) String 

func (bl LBool) String() string

func (LBool) Type 

func (bl LBool) Type() LValueType

type LChannel 

type LChannel chan LValue

func (LChannel) String 

func (ch LChannel) String() string

func (LChannel) Type 

func (ch LChannel) Type() LValueType

type LFunction 

type LFunction struct {
	IsG       bool
	Env       *LTable
	Proto     *FunctionProto
	GFunction LGFunction
	Upvalues  []*Upvalue
}

func (*LFunction) LocalName 

func (fn *LFunction) LocalName(regno, pc int) (string, bool)

func (*LFunction) String 

func (fn *LFunction) String() string

func (*LFunction) Type 

func (fn *LFunction) Type() LValueType

type LGFunction 

type LGFunction func(*LState) int

type LNilType 

type LNilType struct{}

func (*LNilType) String 

func (nl *LNilType) String() string

func (*LNilType) Type 

func (nl *LNilType) Type() LValueType

type LNumber 

type LNumber float64

func LVAsNumber 

func LVAsNumber(v LValue) LNumber

LVAsNumber tries to convert a given LValue to a number.

func (LNumber) Format 

func (nm LNumber) Format(f fmt.State, c rune)

fmt.Formatter interface

func (LNumber) String 

func (nm LNumber) String() string

func (LNumber) Type 

func (nm LNumber) Type() LValueType

type LState 

type LState struct {
	G       *Global
	Parent  *LState
	Env     *LTable
	Panic   func(*LState)
	Dead    bool
	Options *Options
	// contains filtered or unexported fields
}

func NewState 

func NewState(options *Options) *LState

func (*LState) ArgError 

func (ls *LState) ArgError(n int, message string)

func (*LState) Call 

func (ls *LState) Call(nargs, nret int)

func (*LState) CallByParam 

func (ls *LState) CallByParam(cp P, args ...LValue) error

func (*LState) CallMeta 

func (ls *LState) CallMeta(obj LValue, event string) LValue

func (*LState) CheckAny 

func (ls *LState) CheckAny(n int) LValue

func (*LState) CheckBool 

func (ls *LState) CheckBool(n int) bool

func (*LState) CheckChannel 

func (ls *LState) CheckChannel(n int) chan LValue

Checks whether the given index is an LChannel and returns this channel.

func (*LState) CheckFunction 

func (ls *LState) CheckFunction(n int) *LFunction

func (*LState) CheckInt 

func (ls *LState) CheckInt(n int) int

func (*LState) CheckInt64 

func (ls *LState) CheckInt64(n int) int64

func (*LState) CheckNumber 

func (ls *LState) CheckNumber(n int) LNumber

func (*LState) CheckOption 

func (ls *LState) CheckOption(n int, options []string) int

func (*LState) CheckString 

func (ls *LState) CheckString(n int) string

func (*LState) CheckTable 

func (ls *LState) CheckTable(n int) *LTable

func (*LState) CheckThread 

func (ls *LState) CheckThread(n int) *LState

func (*LState) CheckType 

func (ls *LState) CheckType(n int, typ LValueType)

func (*LState) CheckTypes 

func (ls *LState) CheckTypes(n int, typs ...LValueType)

func (*LState) CheckUserData 

func (ls *LState) CheckUserData(n int) *LUserData

func (*LState) Close 

func (ls *LState) Close()

func (*LState) Concat 

func (ls *LState) Concat(values ...LValue) string

func (*LState) Context 

func (ls *LState) Context() context.Context

Context returns the LState's context. To change the context, use WithContext.

func (*LState) CreateTable 

func (ls *LState) CreateTable(acap, hcap int) *LTable

func (*LState) DoFile 

func (ls *LState) DoFile(path string) error

func (*LState) DoString 

func (ls *LState) DoString(source string) error

func (*LState) Equal 

func (ls *LState) Equal(lhs, rhs LValue) bool

func (*LState) Error 

func (ls *LState) Error(lv LValue, level int)

This function is equivalent to lua_error( http://www.lua.org/manual/5.1/manual.html#lua_error ).

func (*LState) FindTable 

func (ls *LState) FindTable(obj *LTable, n string, size int) LValue

func (*LState) ForEach 

func (ls *LState) ForEach(tb *LTable, cb func(LValue, LValue))

func (*LState) GPCall 

func (ls *LState) GPCall(fn LGFunction, data LValue) error

func (*LState) Get 

func (ls *LState) Get(idx int) LValue

func (*LState) GetFEnv 

func (ls *LState) GetFEnv(obj LValue) LValue

func (*LState) GetField 

func (ls *LState) GetField(obj LValue, skey string) LValue

func (*LState) GetGlobal 

func (ls *LState) GetGlobal(name string) LValue

func (*LState) GetInfo 

func (ls *LState) GetInfo(what string, dbg *Debug, fn LValue) (LValue, error)

func (*LState) GetLocal 

func (ls *LState) GetLocal(dbg *Debug, no int) (string, LValue)

func (*LState) GetMetaField 

func (ls *LState) GetMetaField(obj LValue, event string) LValue

func (*LState) GetMetatable 

func (ls *LState) GetMetatable(obj LValue) LValue

func (*LState) GetStack 

func (ls *LState) GetStack(level int) (*Debug, bool)

func (*LState) GetTable 

func (ls *LState) GetTable(obj LValue, key LValue) LValue

func (*LState) GetTop 

func (ls *LState) GetTop() int

func (*LState) GetTypeMetatable 

func (ls *LState) GetTypeMetatable(typ string) LValue

func (*LState) GetUpvalue 

func (ls *LState) GetUpvalue(fn *LFunction, no int) (string, LValue)

func (*LState) Insert 

func (ls *LState) Insert(value LValue, index int)

func (*LState) IsClosed 

func (ls *LState) IsClosed() bool

func (*LState) LessThan 

func (ls *LState) LessThan(lhs, rhs LValue) bool

func (*LState) Load 

func (ls *LState) Load(reader io.Reader, name string) (*LFunction, error)

func (*LState) LoadFile 

func (ls *LState) LoadFile(path string) (*LFunction, error)

func (*LState) LoadString 

func (ls *LState) LoadString(source string) (*LFunction, error)

func (*LState) NewClosure 

func (ls *LState) NewClosure(fn LGFunction, upvalues ...LValue) *LFunction

func (*LState) NewFunction 

func (ls *LState) NewFunction(fn LGFunction) *LFunction

func (*LState) NewFunctionFromProto 

func (ls *LState) NewFunctionFromProto(proto *FunctionProto) *LFunction

func (*LState) NewTable 

func (ls *LState) NewTable() *LTable

func (*LState) NewThread 

func (ls *LState) NewThread() (*LState, context.CancelFunc)

NewThread returns a new LState that shares with the original state all global objects. If the original state has context.Context, the new state has a new child context of the original state and this function returns its cancel function.

func (*LState) NewTypeMetatable 

func (ls *LState) NewTypeMetatable(typ string) *LTable

func (*LState) NewUserData 

func (ls *LState) NewUserData() *LUserData

func (*LState) Next 

func (ls *LState) Next(tb *LTable, key LValue) (LValue, LValue)

func (*LState) ObjLen 

func (ls *LState) ObjLen(v1 LValue) int

func (*LState) OpenLibs 

func (ls *LState) OpenLibs()

OpenLibs loads the built-in libraries. It is equivalent to running OpenLoad, then OpenBase, then iterating over the other OpenXXX functions in any order.

func (*LState) OptBool 

func (ls *LState) OptBool(n int, d bool) bool

func (*LState) OptChannel 

func (ls *LState) OptChannel(n int, ch chan LValue) chan LValue

If the given index is a LChannel, returns this channel. If this argument is absent or is nil, returns ch. Otherwise, raises an error.

func (*LState) OptFunction 

func (ls *LState) OptFunction(n int, d *LFunction) *LFunction

func (*LState) OptInt 

func (ls *LState) OptInt(n int, d int) int

func (*LState) OptInt64 

func (ls *LState) OptInt64(n int, d int64) int64

func (*LState) OptNumber 

func (ls *LState) OptNumber(n int, d LNumber) LNumber

func (*LState) OptString 

func (ls *LState) OptString(n int, d string) string

func (*LState) OptTable 

func (ls *LState) OptTable(n int, d *LTable) *LTable

func (*LState) OptUserData 

func (ls *LState) OptUserData(n int, d *LUserData) *LUserData

func (*LState) PCall 

func (ls *LState) PCall(nargs, nret int, errfunc *LFunction) (err error)

func (*LState) Pop 

func (ls *LState) Pop(n int)

func (*LState) PreloadModule 

func (ls *LState) PreloadModule(name string, loader LGFunction)

Set a module loader to the package.preload table.

func (*LState) Push 

func (ls *LState) Push(value LValue)

func (*LState) RaiseError 

func (ls *LState) RaiseError(format string, args ...interface{})

This function is equivalent to luaL_error( http://www.lua.org/manual/5.1/manual.html#luaL_error ).

func (*LState) RawEqual 

func (ls *LState) RawEqual(lhs, rhs LValue) bool

func (*LState) RawGet 

func (ls *LState) RawGet(tb *LTable, key LValue) LValue

func (*LState) RawGetInt 

func (ls *LState) RawGetInt(tb *LTable, key int) LValue

func (*LState) RawSet 

func (ls *LState) RawSet(tb *LTable, key LValue, value LValue)

func (*LState) RawSetInt 

func (ls *LState) RawSetInt(tb *LTable, key int, value LValue)

func (*LState) Register 

func (ls *LState) Register(name string, fn LGFunction)

func (*LState) RegisterModule 

func (ls *LState) RegisterModule(name string, funcs map[string]LGFunction) LValue

func (*LState) Remove 

func (ls *LState) Remove(index int)

func (*LState) RemoveCallerFrame 

func (ls *LState) RemoveCallerFrame() *callFrame

RemoveCallerFrame removes the stack frame above the current stack frame. This is useful in tail calls. It returns the new current frame.

func (*LState) RemoveContext 

func (ls *LState) RemoveContext() context.Context

RemoveContext removes the context associated with this LState and returns this context.

func (*LState) Replace 

func (ls *LState) Replace(idx int, value LValue)

func (*LState) Resume 

func (ls *LState) Resume(th *LState, fn *LFunction, args ...LValue) (ResumeState, error, []LValue)

func (*LState) SetContext 

func (ls *LState) SetContext(ctx context.Context)

SetContext set a context ctx to this LState. The provided ctx must be non-nil.

func (*LState) SetFEnv 

func (ls *LState) SetFEnv(obj LValue, env LValue)

func (*LState) SetField 

func (ls *LState) SetField(obj LValue, key string, value LValue)

func (*LState) SetFuncs 

func (ls *LState) SetFuncs(tb *LTable, funcs map[string]LGFunction, upvalues ...LValue) *LTable

func (*LState) SetGlobal 

func (ls *LState) SetGlobal(name string, value LValue)

func (*LState) SetLocal 

func (ls *LState) SetLocal(dbg *Debug, no int, lv LValue) string

func (*LState) SetMetatable 

func (ls *LState) SetMetatable(obj LValue, mt LValue)

func (*LState) SetMx 

func (ls *LState) SetMx(mx int)

Set maximum memory size. This function can only be called from the main thread.

func (*LState) SetTable 

func (ls *LState) SetTable(obj LValue, key LValue, value LValue)

func (*LState) SetTop 

func (ls *LState) SetTop(idx int)

func (*LState) SetUpvalue 

func (ls *LState) SetUpvalue(fn *LFunction, no int, lv LValue) string

func (*LState) Status 

func (ls *LState) Status(th *LState) string

func (*LState) String 

func (ls *LState) String() string

func (*LState) ToBool 

func (ls *LState) ToBool(n int) bool

func (*LState) ToChannel 

func (ls *LState) ToChannel(n int) chan LValue

Converts the Lua value at the given acceptable index to the chan LValue.

func (*LState) ToFunction 

func (ls *LState) ToFunction(n int) *LFunction

func (*LState) ToInt 

func (ls *LState) ToInt(n int) int

func (*LState) ToInt64 

func (ls *LState) ToInt64(n int) int64

func (*LState) ToNumber 

func (ls *LState) ToNumber(n int) LNumber

func (*LState) ToString 

func (ls *LState) ToString(n int) string

func (*LState) ToStringMeta 

func (ls *LState) ToStringMeta(lv LValue) LValue

ToStringMeta returns string representation of given LValue. This method calls the `__tostring` meta method if defined.

func (*LState) ToTable 

func (ls *LState) ToTable(n int) *LTable

func (*LState) ToThread 

func (ls *LState) ToThread(n int) *LState

func (*LState) ToUserData 

func (ls *LState) ToUserData(n int) *LUserData

func (*LState) Type 

func (ls *LState) Type() LValueType

func (*LState) TypeError 

func (ls *LState) TypeError(n int, typ LValueType)

func (*LState) Where 

func (ls *LState) Where(level int) string

func (*LState) XMoveTo 

func (ls *LState) XMoveTo(other *LState, n int)

func (*LState) Yield 

func (ls *LState) Yield(values ...LValue) int

type LString 

type LString string

func (LString) Format 

func (st LString) Format(f fmt.State, c rune)

fmt.Formatter interface

func (LString) String 

func (st LString) String() string

func (LString) Type 

func (st LString) Type() LValueType

type LTable 

type LTable struct {
	Metatable LValue
	// contains filtered or unexported fields
}

func (*LTable) Append 

func (tb *LTable) Append(value LValue)

Append appends a given LValue to this LTable.

func (*LTable) ForEach 

func (tb *LTable) ForEach(cb func(LValue, LValue))

ForEach iterates over this table of elements, yielding each in turn to a given function.

func (*LTable) Insert 

func (tb *LTable) Insert(i int, value LValue)

Insert inserts a given LValue at position `i` in this table.

func (*LTable) Len 

func (tb *LTable) Len() int

Len returns length of this LTable without using __len.

func (*LTable) MaxN 

func (tb *LTable) MaxN() int

MaxN returns a maximum number key that nil value does not exist before it.

func (*LTable) Next 

func (tb *LTable) Next(key LValue) (LValue, LValue)

This function is equivalent to lua_next ( http://www.lua.org/manual/5.1/manual.html#lua_next ).

func (*LTable) RawGet 

func (tb *LTable) RawGet(key LValue) LValue

RawGet returns an LValue associated with a given key without __index metamethod.

func (*LTable) RawGetH 

func (tb *LTable) RawGetH(key LValue) LValue

RawGet returns an LValue associated with a given key without __index metamethod.

func (*LTable) RawGetInt 

func (tb *LTable) RawGetInt(key int) LValue

RawGetInt returns an LValue at position `key` without __index metamethod.

func (*LTable) RawGetString 

func (tb *LTable) RawGetString(key string) LValue

RawGetString returns an LValue associated with a given key without __index metamethod.

func (*LTable) RawSet 

func (tb *LTable) RawSet(key LValue, value LValue)

RawSet sets a given LValue to a given index without the __newindex metamethod. It is recommended to use `RawSetString` or `RawSetInt` for performance if you already know the given LValue is a string or number.

func (*LTable) RawSetH 

func (tb *LTable) RawSetH(key LValue, value LValue)

RawSetH sets a given LValue to a given index without the __newindex metamethod.

func (*LTable) RawSetInt 

func (tb *LTable) RawSetInt(key int, value LValue)

RawSetInt sets a given LValue at a position `key` without the __newindex metamethod.

func (*LTable) RawSetString 

func (tb *LTable) RawSetString(key string, value LValue)

RawSetString sets a given LValue to a given string index without the __newindex metamethod.

func (*LTable) Remove 

func (tb *LTable) Remove(pos int) LValue

Remove removes from this table the element at a given position.

func (*LTable) String 

func (tb *LTable) String() string

func (*LTable) Type 

func (tb *LTable) Type() LValueType

type LUserData 

type LUserData struct {
	Value     interface{}
	Env       *LTable
	Metatable LValue
}

func (*LUserData) String 

func (ud *LUserData) String() string

func (*LUserData) Type 

func (ud *LUserData) Type() LValueType

type LValue 

type LValue interface {
	String() string
	Type() LValueType
	// contains filtered or unexported methods
}

type LValueType 

type LValueType int
const (
	LTNil LValueType = iota
	LTBool
	LTNumber
	LTString
	LTFunction
	LTUserData
	LTThread
	LTTable
	LTChannel
)

func (LValueType) String 

func (vt LValueType) String() string

type Options 

type Options struct {
	// Call stack size. This defaults to `lua.CallStackSize`.
	CallStackSize int
	// Data stack size. This defaults to `lua.RegistrySize`.
	RegistrySize int
	// Allow the registry to grow from the registry size specified up to a value of RegistryMaxSize. A value of 0
	// indicates no growth is permitted. The registry will not shrink again after any growth.
	RegistryMaxSize int
	// If growth is enabled, step up by an additional `RegistryGrowStep` each time to avoid having to resize too often.
	// This defaults to `lua.RegistryGrowStep`
	RegistryGrowStep int
	// Controls whether or not libraries are opened by default
	SkipOpenLibs bool
	// Tells whether a Go stacktrace should be included in a Lua stacktrace when panics occur.
	IncludeGoStackTrace bool
	// If `MinimizeStackMemory` is set, the call stack will be automatically grown or shrank up to a limit of
	// `CallStackSize` in order to minimize memory usage. This does incur a slight performance penalty.
	MinimizeStackMemory bool
	// Stdout used for print function. Defaults to os.Stdout.
	Stdout io.Writer
	// WorkingDir is the working directory for the state. Defaults to current one.
	WorkingDir string
	// IsolateIO is a flag that tells whether the state should isolate its IO operations to the working directory.
	IsolateIO bool
	// TempDir is the temporary directory name. Defaults to os.TempDir().
	TempDir string
}

Options is a configuration that is used to create a new LState.

type P 

type P struct {
	Fn      LValue
	NRet    int
	Protect bool
	Handler *LFunction
}

type ResumeState 

type ResumeState int
const (
	ResumeOK ResumeState = iota
	ResumeYield
	ResumeError
)

type Upvalue 

type Upvalue struct {
	// contains filtered or unexported fields
}

func (*Upvalue) Close 

func (uv *Upvalue) Close()

func (*Upvalue) IsClosed 

func (uv *Upvalue) IsClosed() bool

func (*Upvalue) SetValue 

func (uv *Upvalue) SetValue(value LValue)

func (*Upvalue) Value 

func (uv *Upvalue) Value() LValue

Source Files

View all Source files

Directories

Path Synopsis
cmd
glua
Lua pattern match functions for Go
 Lua pattern match functions for Go

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