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|
if not modules then modules = { } end modules ['luat-usr'] = {
version = 1.001,
comment = "companion to luat-lib.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
local global = global
local moduledata = moduledata
local thirddata = thirddata
local userdata = userdata
local documentdata = documentdata
local context = context
local tostring = tostring
local tonumber = tonumber
local print = print
local string = string
local table = table
local lpeg = lpeg
local math = math
local io = io
local os = os
local lpeg = lpeg
local luanames = lua.name -- luatex itself
local setmetatableindex = table.setmetatableindex
local load = load
local xpcall = xpcall
local instance_banner = string.formatters["=[instance: %s]"] -- the = controls the lua error / see: lobject.c
local tex_errormessage = context.errmessage
local implement = interfaces.implement
local reporter = logs.reporter
local report_instance = reporter("lua instance")
local report_script = reporter("lua script")
local report_thread = reporter("lua thread")
local newline = logs.newline
lua.numbers = lua.numbers or { }
lua.messages = lua.messages or { }
local numbers = lua.numbers
local messages = lua.messages
storage.register("lua/numbers", numbers, "lua.numbers" )
storage.register("lua/messages", messages, "lua.messages")
-- First we implement a pure lua version of directlua and a persistent
-- variant of it:
local function runscript(code)
local done, message = loadstring(code)
if done then
done()
else
newline()
report_script("error : %s",message or "unknown")
report_script()
report_script("code : %s",code)
newline()
end
end
local threads = setmetatableindex(function(t,k)
local v = setmetatableindex({},global)
t[k] = v
return v
end)
local function runthread(name,code)
if not code or code == "" then
threads[name] = nil
else
local thread = threads[name]
local done, message = loadstring(code,nil,nil,thread)
if done then
done()
else
newline()
report_thread("thread: %s",name)
report_thread("error : %s",message or "unknown")
report_thread()
report_thread("code : %s",code)
newline()
end
end
end
interfaces.implement {
name = "luascript",
actions = runscript,
arguments = "string"
}
interfaces.implement {
name = "luathread",
actions = runthread,
arguments = "2 strings",
}
-- local scanners = interfaces.scanners
--
-- local function ctxscanner(name)
-- local scanner = scanners[name]
-- if scanner then
-- scanner()
-- else
-- report("unknown scanner: %s",name)
-- end
-- end
--
-- interfaces.implement {
-- name = "clfscanner",
-- actions = ctxscanner,
-- arguments = "string",
-- }
local function registername(name,message)
if not name or name == "" then
report_instance("no valid name given")
return
end
if not message or message == "" then
message = name
end
local lnn = numbers[name]
if not lnn then
lnn = #messages + 1
messages[lnn] = message
numbers[name] = lnn
end
luanames[lnn] = instance_banner(message)
local report = reporter("lua instance",message)
local proxy = {
-- we can access all via:
global = global, -- or maybe just a metatable
-- some protected data
moduledata = setmetatableindex(moduledata),
thirddata = setmetatableindex(thirddata),
-- less protected data
userdata = userdata,
documentdata = documentdata,
-- always there fast
context = context,
--
tostring = tostring,
tonumber = tonumber,
-- standard lua modules
string = string,
table = table,
lpeg = lpeg,
math = math,
io = io,
os = os,
lpeg = lpeg,
--
print = print,
report = report,
}
return function(code)
local code, message = load(code,nil,nil,proxy)
if not code then
report_instance("error: %s",message or code)
elseif not xpcall(code,report) then
tex_errormessage("hit return to continue or quit this run")
end
end
end
lua.registername = registername
implement {
name = "registernamedlua",
arguments = "3 strings",
actions = function(name,message,csname)
if csname and csname ~= "" then
implement {
name = csname,
arguments = "string",
actions = registername(name,message) or report,
scope = "private",
}
else
report_instance("unvalid csname for %a",message or name or "?")
end
end
}
|
