mirror of
https://github.com/nim-lang/Nim.git
synced 2025-12-30 01:44:37 +00:00
516e0cb71a
* ints changed to cint
* the source has been cleaned up with {.push/pop.}
* lua 5.2 has been removed (it is incompatible)
209 lines
6.9 KiB
Nim
209 lines
6.9 KiB
Nim
#*****************************************************************************
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# * *
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# * File: lauxlib.pas *
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# * Authors: TeCGraf (C headers + actual Lua libraries) *
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# * Lavergne Thomas (original translation to Pascal) *
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# * Bram Kuijvenhoven (update to Lua 5.1.1 for FreePascal) *
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# * Description: Lua auxiliary library *
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# * *
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# *****************************************************************************
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#
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#** $Id: lauxlib.h,v 1.59 2003/03/18 12:25:32 roberto Exp $
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#** Auxiliary functions for building Lua libraries
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#** See Copyright Notice in lua.h
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#
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#
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#** Translated to pascal by Lavergne Thomas
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#** Notes :
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#** - Pointers type was prefixed with 'P'
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#** Bug reports :
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#** - thomas.lavergne@laposte.net
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#** In french or in english
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#
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import
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lua
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proc pushstring*(L: PState, s: string)
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# compatibilty macros
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proc getn*(L: PState, n: cint): cint
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# calls lua_objlen
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proc setn*(L: PState, t, n: cint)
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# does nothing!
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type
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Treg*{.final.} = object
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name*: cstring
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func*: CFunction
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Preg* = ptr Treg
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{.push callConv: cdecl, dynlib: lua.LIB_NAME.}
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{.push importc: "luaL_$1".}
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proc openlib*(L: PState, libname: cstring, lr: Preg, nup: cint)
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proc register*(L: PState, libname: cstring, lr: Preg)
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proc getmetafield*(L: PState, obj: cint, e: cstring): cint
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proc callmeta*(L: PState, obj: cint, e: cstring): cint
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proc typerror*(L: PState, narg: cint, tname: cstring): cint
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proc argerror*(L: PState, numarg: cint, extramsg: cstring): cint
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proc checklstring*(L: PState, numArg: cint, len: ptr int): cstring
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proc optlstring*(L: PState, numArg: cint, def: cstring, len: ptr cint): cstring
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proc checknumber*(L: PState, numArg: cint): Number
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proc optnumber*(L: PState, nArg: cint, def: Number): Number
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proc checkinteger*(L: PState, numArg: cint): Integer
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proc optinteger*(L: PState, nArg: cint, def: Integer): Integer
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proc checkstack*(L: PState, sz: cint, msg: cstring)
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proc checktype*(L: PState, narg, t: cint)
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proc checkany*(L: PState, narg: cint)
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proc newmetatable*(L: PState, tname: cstring): cint
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proc checkudata*(L: PState, ud: cint, tname: cstring): Pointer
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proc where*(L: PState, lvl: cint)
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proc error*(L: PState, fmt: cstring): cint{.varargs.}
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proc checkoption*(L: PState, narg: cint, def: cstring, lst: cstringArray): cint
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proc unref*(L: PState, t, theref: cint)
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proc loadfile*(L: PState, filename: cstring): cint
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proc loadbuffer*(L: PState, buff: cstring, size: cint, name: cstring): cint
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proc loadstring*(L: PState, s: cstring): cint
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proc newstate*(): PState
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{.pop.}
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proc reference*(L: PState, t: cint): cint{.importc: "luaL_ref".}
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{.pop.}
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proc open*(): PState
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# compatibility; moved from unit lua to lauxlib because it needs luaL_newstate
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#
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#** ===============================================================
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#** some useful macros
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#** ===============================================================
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#
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proc argcheck*(L: PState, cond: bool, numarg: cint, extramsg: cstring)
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proc checkstring*(L: PState, n: cint): cstring
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proc optstring*(L: PState, n: cint, d: cstring): cstring
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proc checkint*(L: PState, n: cint): cint
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proc checklong*(L: PState, n: cint): clong
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proc optint*(L: PState, n: cint, d: float64): cint
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proc optlong*(L: PState, n: cint, d: float64): clong
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proc dofile*(L: PState, filename: cstring): cint
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proc dostring*(L: PState, str: cstring): cint
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proc getmetatable*(L: PState, tname: cstring)
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# not translated:
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# #define luaL_opt(L,f,n,d) (lua_isnoneornil(L,(n)) ? (d) : f(L,(n)))
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#
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#** =======================================================
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#** Generic Buffer manipulation
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#** =======================================================
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#
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const # note: this is just arbitrary, as it related to the BUFSIZ defined in stdio.h ...
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BUFFERSIZE* = 4096
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type
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Buffer*{.final.} = object
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p*: cstring # current position in buffer
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lvl*: cint # number of strings in the stack (level)
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L*: PState
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buffer*: array[0..BUFFERSIZE - 1, Char] # warning: see note above about LUAL_BUFFERSIZE
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PBuffer* = ptr Buffer
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proc addchar*(B: PBuffer, c: Char)
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# warning: see note above about LUAL_BUFFERSIZE
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# compatibility only (alias for luaL_addchar)
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proc putchar*(B: PBuffer, c: Char)
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# warning: see note above about LUAL_BUFFERSIZE
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proc addsize*(B: PBuffer, n: cint)
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{.push callConv: cdecl, dynlib: lua.LIB_NAME, importc: "luaL_$1".}
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proc buffinit*(L: PState, B: PBuffer)
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proc prepbuffer*(B: PBuffer): cstring
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proc addlstring*(B: PBuffer, s: cstring, L: cint)
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proc addstring*(B: PBuffer, s: cstring)
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proc addvalue*(B: PBuffer)
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proc pushresult*(B: PBuffer)
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proc gsub*(L: PState, s, p, r: cstring): cstring
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proc findtable*(L: PState, idx: cint, fname: cstring, szhint: cint): cstring
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# compatibility with ref system
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# pre-defined references
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{.pop.}
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const
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NOREF* = - 2
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REFNIL* = - 1
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proc unref*(L: PState, theref: cint)
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proc getref*(L: PState, theref: cint)
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#
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#** Compatibility macros and functions
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#
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# implementation
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proc pushstring(L: PState, s: string) =
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pushlstring(L, cstring(s), s.len.cint)
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proc getn(L: PState, n: cint): cint =
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Result = objlen(L, n)
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proc setn(L: PState, t, n: cint) =
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# does nothing as this operation is deprecated
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nil
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proc open(): PState =
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Result = newstate()
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proc dofile(L: PState, filename: cstring): cint =
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Result = loadfile(L, filename)
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if Result == 0: Result = pcall(L, 0, MULTRET, 0)
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proc dostring(L: PState, str: cstring): cint =
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Result = loadstring(L, str)
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if Result == 0: Result = pcall(L, 0, MULTRET, 0)
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proc getmetatable(L: PState, tname: cstring) =
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getfield(L, REGISTRYINDEX, tname)
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proc argcheck(L: PState, cond: bool, numarg: cint, extramsg: cstring) =
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if not cond:
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discard argerror(L, numarg, extramsg)
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proc checkstring(L: PState, n: cint): cstring =
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Result = checklstring(L, n, nil)
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proc optstring(L: PState, n: cint, d: cstring): cstring =
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Result = optlstring(L, n, d, nil)
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proc checkint(L: PState, n: cint): cint =
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Result = cint(checknumber(L, n))
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proc checklong(L: PState, n: cint): clong =
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Result = int32(ToInt(checknumber(L, n)))
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proc optint(L: PState, n: cint, d: float64): cint =
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Result = optnumber(L, n, d).cint
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proc optlong(L: PState, n: cint, d: float64): clong =
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Result = int32(ToInt(optnumber(L, n, d)))
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proc addchar(B: PBuffer, c: Char) =
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if cast[int](addr((B.p))) < (cast[int](addr((B.buffer[0]))) + BUFFERSIZE):
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discard prepbuffer(B)
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B.p[1] = c
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B.p = cast[cstring](cast[int](B.p) + 1)
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proc putchar(B: PBuffer, c: Char) =
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addchar(B, c)
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proc addsize(B: PBuffer, n: cint) =
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B.p = cast[cstring](cast[int](B.p) + n)
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proc unref(L: PState, theref: cint) =
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unref(L, REGISTRYINDEX, theref)
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proc getref(L: PState, theref: cint) =
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rawgeti(L, REGISTRYINDEX, theref)
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