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if not modules then modules = { } end modules ['core-env'] = {
version = 1.001,
comment = "companion to core-env.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
-- maybe this will move to the context name space although the
-- plurals are unlikely to clash with future tex primitives
--
-- if tex.modes['xxxx'] then .... else .... end
local rawset = rawset
local P, C, S, lpegmatch, patterns = lpeg.P, lpeg.C, lpeg.S, lpeg.match, lpeg.patterns
local context = context
local ctxcore = context.core
local texgetcount = tex.getcount
local texgetintegervalue = token.get_integer -- todo: in tex namespace
local allocate = utilities.storage.allocate
local setmetatableindex = table.setmetatableindex
local setmetatablenewindex = table.setmetatablenewindex
local setmetatablecall = table.setmetatablecall
local createtoken = token.create
local isdefined = tokens.isdefined
texmodes = allocate { } tex.modes = texmodes
texsystemmodes = allocate { } tex.systemmodes = texsystemmodes
texconstants = allocate { } tex.constants = texconstants
texconditionals = allocate { } tex.conditionals = texconditionals
texifs = allocate { } tex.ifs = texifs
texisdefined = allocate { } tex.isdefined = texisdefined
local modes = { }
local systemmodes = { }
-- we could use the built-in tex.is[count|dimen|skip|toks] here but caching
-- at the lua end is not that bad (and we need more anyway)
local cache = tokens.cache
-- we can have a modes cache too
local commandcodes = tokens.commands
local iftrue = cache["iftrue"].index
-- local dimencode = cache["scratchdimen"] .command -- tokens.commands.register_dimen
-- local countcode = cache["scratchcounter"].command -- tokens.commands.register_int
-- local tokencode = cache["scratchtoks"] .command -- tokens.commands.register_toks
-- local skipcode = cache["scratchskip"] .command -- tokens.commands.register_glue
-- local muskipcode = cache["scratchmuskip"] .command -- tokens.commands.register_mu_glue
-- local conditioncode = cache["iftrue"] .command -- tokens.commands.if_test
-- local types = {
-- [dimencode] = "dimen",
-- [countcode] = "count",
-- [tokencode] = "token",
-- [skipcode] = "skip",
-- [muskipcode] = "muskip",
-- -- [attributecode] = "attribute",
-- [conditioncode] = "condition"
-- }
local dimencode = commandcodes.register_dimen -- cache["scratchdimen"] .command -- tokens.commands.register_dimen
local countcode = commandcodes.register_int -- cache["scratchcounter"].command -- tokens.commands.register_int
local tokencode = commandcodes.register_toks -- ["scratchtoks"] .command -- tokens.commands.register_toks
local skipcode = commandcodes.register_glue -- cache["scratchskip"] .command -- tokens.commands.register_glue
local muskipcode = commandcodes.register_mu_glue -- cache["scratchmuskip"] .command -- tokens.commands.register_mu_glue
local conditioncode = commandcodes.if_test -- cache["iftrue"] .command -- tokens.commands.if_test
local integercode = commandcodes.integer
local types = {
[dimencode] = "dimen",
[countcode] = "count",
[tokencode] = "token",
[skipcode] = "skip",
[muskipcode] = "muskip",
-- [attributecode] = "attribute",
[conditioncode] = "condition",
[integercode] = "integer",
}
setmetatableindex(texmodes, function(t,k)
local m = systemmodes[k]
if not m then
local n = "mode>" .. k
m = function() return texgetintegervalue(n) == 1 end
rawset(modes,k,m)
end
return m()
end)
setmetatableindex(texsystemmodes, function(t,k)
local m = systemmodes[k]
if not m then
local n = "mode>*" .. k
m = function() return texgetintegervalue(n) == 1 end
rawset(modes,k,m)
end
return m()
end)
-- also a call method
context.settrialtypesettingmethod(function() return texsystemmodes.trialtypesetting end)
setmetatablenewindex(texmodes, function(t,k) report_mode("you cannot set the %s named %a this way","mode", k) end)
setmetatablenewindex(texsystemmodes, function(t,k) report_mode("you cannot set the %s named %a this way","systemmode", k) end)
setmetatablenewindex(texconstants, function(t,k) report_mode("you cannot set the %s named %a this way","constant", k) end)
setmetatablenewindex(texconditionals, function(t,k) report_mode("you cannot set the %s named %a this way","conditional",k) end)
setmetatablenewindex(texifs, function(t,k) end)
-- if we really need performance we can have a dedicated cache for each
-- kind of variable ... maybe we no longer have to cache anyway (in lmtx)
setmetatableindex(texconstants, function(t,k)
-- return cache[k].command == countcode and texgetcount(k) or 0
return cache[k].command == integercode and texgetintegervalue(k) or 0
end)
setmetatableindex(texconditionals, function(t,k) -- 0 == true
-- return cache[k].command == countcode and texgetcount(k) == 0
return cache[k].command == integercode and texgetintegervalue(k) == 0
end)
setmetatableindex(texifs, function(t,k)
local c = cache[k]
return c.command == conditioncode and c.index == iftrue
end)
tex.isdefined = isdefined
function tex.isdimen(name)
local hit = cache[name]
return hit.command == dimencode and hit.index or true
end
function tex.iscount(name)
local hit = cache[name]
return hit.command == countcode and hit.index or true
end
function tex.istoken(name)
local hit = cache[name]
return hit.command == tokencode and hit.index or true
end
function tex.isskip(name)
local hit = cache[name]
return hit.command == skipcode and hit.index or true
end
function tex.ismuskip(name)
local hit = cache[name]
return hit.command == muskipcode and hit.index or true
end
function tex.type(name)
return types[cache[name].command] or "macro"
end
function context.setconditional(name,value)
if value then
ctxcore.settruevalue(name)
else
ctxcore.setfalsevalue(name)
end
end
function context.setmode(name,value)
if value then
ctxcore.setmode(name)
else
ctxcore.resetmode(name)
end
end
function context.setsystemmode(name,value)
if value then
ctxcore.setsystemmode(name)
else
ctxcore.resetsystemmode(name)
end
end
context.modes = texmodes
context.systemmodes = texsystemmodes
context.conditionals = texconditionals
-------.constants = texconstants
-------.ifs = texifs
local sep = S("), ")
local str = C((1-sep)^1)
local tag = P("(") * C((1-S(")" ))^1) * P(")")
local arg = P("(") * C((1-S("){"))^1) * P("{") * C((1-P("}"))^0) * P("}") * P(")")
local pattern = (
P("lua") * tag / ctxcore.luasetup
+ P("xml") * arg / ctxcore.setupwithargument -- or xmlw as xmlsetup has swapped arguments
+ (P("tex") * tag + str) / ctxcore.texsetup
+ sep^1
)^1
interfaces.implement {
name = "autosetups",
actions = function(str) lpegmatch(pattern,str) end,
arguments = "string"
}
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