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