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if not modules then modules = { } end modules ['toks-ini'] = {
version = 1.001,
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
tokens = tokens or { }
local tokens = tokens
local token = token -- the built in one
local next = next
local tonumber = tonumber
local tostring = tostring
local utfchar = utf.char
local char = string.char
local printtable = table.print
local concat = table.concat
local format = string.format
local commands = token.commands()
tokens.commands = utilities.storage.allocate(table.swapped(commands,commands))
tokens.values = { }
local scantoks = token.scan_toks
local scanstring = token.scan_string
local scanargument = token.scan_argument
local scandelimited = token.scan_delimited
local scantokenlist = token.scan_tokenlist or scanstring
local scaninteger = token.scan_integer or token.scan_int
local scancardinal = token.scan_cardinal
local scancode = token.scan_code
local scantokencode = token.scan_token_code
local scandimen = token.scan_dimen
local scanglue = token.scan_glue
local scanskip = token.scan_skip
local scankeyword = token.scan_keyword
local scankeywordcs = token.scan_keyword_cs or scankeyword
local scantoken = token.scan_token
local scanbox = token.scan_box
local scanword = token.scan_word
local scanletters = token.scan_letters or scanword -- lmtx
local scankey = token.scan_key
local scanvalue = token.scan_value
local scanchar = token.scan_char
local scannumber = token.scan_number -- not defined
local scancsname = token.scan_csname
local scanreal = token.scan_real
local scanfloat = token.scan_float
local scanluanumber = token.scan_luanumber or scanfloat -- only lmtx
local scanluainteger = token.scan_luainteger or scaninteger -- only lmtx
local scanluacardinal = token.scan_luacardinal or scancardinal -- only lmtx
local setmacro = token.set_macro
local setchar = token.set_char
local setlua = token.set_lua
local createtoken = token.create
local newtoken = token.new
local isdefined = token.is_defined
local istoken = token.is_token
tokens.new = newtoken
tokens.create = createtoken
tokens.istoken = istoken
tokens.isdefined = isdefined
tokens.defined = isdefined
local bits = {
escape = 0x00000001, -- 2^00
begingroup = 0x00000002, -- 2^01
endgroup = 0x00000004, -- 2^02
mathshift = 0x00000008, -- 2^03
alignment = 0x00000010, -- 2^04
endofline = 0x00000020, -- 2^05
parameter = 0x00000040, -- 2^06
superscript = 0x00000080, -- 2^07
subscript = 0x00000100, -- 2^08
ignore = 0x00000200, -- 2^09
space = 0x00000400, -- 2^10 -- 1024
letter = 0x00000800, -- 2^11
other = 0x00001000, -- 2^12
active = 0x00002000, -- 2^13
comment = 0x00004000, -- 2^14
invalid = 0x00008000, -- 2^15
--
character = 0x00001800, -- 2^11 + 2^12
whitespace = 0x00002400, -- 2^13 + 2^10 -- / needs more checking
--
open = 0x00000402, -- 2^10 + 2^01 -- space + begingroup
close = 0x00000404, -- 2^10 + 2^02 -- space + endgroup
}
-- for k, v in next, bits do bits[v] = k end
tokens.bits = bits
-- words are space or \relax terminated and the trailing space is gobbled; a word
-- can contain any non-space letter/other (see archive for implementation in lua)
if not scannumber then
scannumber = function(base)
local s = scanword()
if not s then
return nil
elseif base then
return tonumber(s,base)
else
return tonumber(s)
end
end
end
local function scanboolean()
local kw = scanword()
if kw == "true" then
return true
elseif kw == "false" then
return false
else
return nil
end
end
local function scanverbatim()
return scanargument(false)
end
if not scanbox then
local scanlist = token.scan_list
local putnext = token.put_next
scanbox = function(s)
if s == "hbox" or s == "vbox" or s == "vtop" then
putnext(createtoken(s))
end
return scanlist()
end
token.scanbox = scanbox
end
tokens.scanners = { -- these expand
token = scantoken,
toks = scantoks,
tokens = scantoks,
box = scanbox,
hbox = function() return scanbox("hbox") end,
vbox = function() return scanbox("vbox") end,
vtop = function() return scanbox("vtop") end,
dimen = scandimen,
dimension = scandimen,
glue = scanglue,
gluevalues = function() return scanglue(false,false,true) end,
gluespec = scanskip,
integer = scaninteger,
cardinal = scancardinal,
real = scanreal,
float = scanfloat,
luanumber = scanluanumber,
luainteger = scanluainteger,
luacardinal = scanluacardinal,
count = scaninteger,
string = scanstring,
argument = scanargument,
delimited = scandelimited,
tokenlist = scantokenlist,
verbatim = scanverbatim, -- detokenize
code = scancode,
tokencode = scantokencode,
word = scanword,
letters = scanletters,
key = scankey,
value = scanvalue,
char = scanchar,
number = scannumber,
boolean = scanboolean,
keyword = scankeyword,
keywordcs = scankeywordcs,
csname = scancsname,
next = token.scan_next,
nextexpanded = token.scan_next_expanded,
peek = token.peek_next,
peekexpanded = token.peek_next_expanded,
peekchar = token.peek_next_char,
skip = token.skip_next,
skipexpanded = token.skip_next_expanded,
cmdchr = token.scan_cmdchr,
cmdchrexpanded = token.scan_cmdchr_expanded,
ischar = token.is_next_char,
}
tokens.getters = { -- these don't expand
meaning = token.get_meaning,
macro = token.get_macro,
token = token.scan_next or token.get_next, -- not here, use scanners.next or token
cstoken = token.get_cstoken,
count = tex.getcount,
dimen = tex.getdimen,
skip = tex.getglue,
glue = tex.getglue,
skip = tex.getmuglue,
glue = tex.getmuglue,
box = tex.getbox,
}
tokens.setters = {
macro = setmacro,
char = setchar,
lua = setlua,
count = tex.setcount,
dimen = tex.setdimen,
skip = tex.setglue,
glue = tex.setglue,
skip = tex.setmuglue,
glue = tex.setmuglue,
box = tex.setbox,
}
tokens.accessors = {
command = token.get_command,
cmd = token.get_command,
cmdname = token.get_cmdname,
name = token.get_cmdname,
csname = token.get_csname,
index = token.get_index,
active = token.get_active,
frozen = token.get_frozen,
protected = token.get_protected,
expandable = token.get_protected,
user = token.get_user,
cmdchrcs = token.get_cmdchrcs,
active = token.get_active,
range = token.get_range,
}
if setinspector then
local simple = { letter = "letter", other_char = "other" }
local astable = function(t)
if t and istoken(t) then
local cmdname = t.cmdname
local simple = simple[cmdname]
if simple then
return {
id = t.id,
category = simple,
character = utfchar(t.mode) or nil,
}
else
return {
command = t.command,
id = t.id,
tok = t.tok,
csname = t.csname,
active = t.active,
expandable = t.expandable,
protected = t.protected,
frozen = t.frozen,
mode = t.mode,
index = t.index,
user = t.user,
cmdname = cmdname,
}
end
end
end
tokens.astable = astable
setinspector("token",function(v) local t = astable(v) if t then printtable(t,tostring(v)) return true end end)
end
tokens.cache = table.setmetatableindex(function(t,k)
if not isdefined(k) then
setmacro(k,"","global")
end
local v = createtoken(k)
t[k] = v
return v
end)
if LUATEXVERSION < 114 then
local d = tokens.defined
local c = tokens.create
function tokens.defined(s,b)
if b then
return d(s)
else
return c(s).cmd_name == "undefined_cmd"
end
end
end
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