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--[[
This file is part of luatokens.lua - pure-Lua Lua tokenizer
Copyright (C) 2019 Soni L.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
--]]
local parser = require "parser"
-- CLI argument rules
local defs = parser.selfify({})
defs['-'] = function(state, token)
if state.filename then
error("Must specify only one filename")
end
state.filename = true
state.file = io.stdin
return "self"
end
defs[parser.FALLBACK] = function(state, token)
if state.filename then
error("Must specify only one filename")
end
state.filename = token
state.file, state.err = io.open(state.filename, "r")
return "self"
end
defs[parser.EOZ] = function(state, token)
if not state.file then
error((state.filename and (state.err or "") or "No file specified") )
end
return {}
end
defs[-1] = function(state, token, rule)
if token ~= parser.EOZ and token:sub(1,1) == "-" and not rule then
error("Unknown option: " .. token)
end
end
defs['--'] = parser.selfify({[parser.FALLBACK] = defs[parser.FALLBACK], [parser.EOZ] = defs[parser.EOZ]})
local state = parser.parse(defs, arg)
local luatokens = require "luatokens"
local file = state.file
local tokens = luatokens.defs
local state, err, etoken, estate = parser.parse(tokens, function() return file:read(8192) end)
if state then
for i,v in ipairs(state) do
v = luatokens.reverse_keywords[v] or luatokens.reverse_tokens[v] or v
print(i, v) -- TODO formatting
end
else
print("Parse error")
end
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