diff options
Diffstat (limited to 'cratera.lua')
-rw-r--r-- | cratera.lua | 84 |
1 files changed, 0 insertions, 84 deletions
diff --git a/cratera.lua b/cratera.lua deleted file mode 100644 index 46894c5..0000000 --- a/cratera.lua +++ /dev/null @@ -1,84 +0,0 @@ ---[[ - cratera.lua - pure-Lua Cratera-to-Lua transpiler - 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/>. ---]] - --- This code is highly experimental and not very good - -local parser = require "parser" -local luatokens = require "luatokens" -local compiler = require "compiler" - -local LUA_SIGNATURE = string.dump(function() end):sub(1,1) - -local function cratera_load(reader, ...) - local chunkname, mode, env = ... - if type(reader) == "string" and reader:sub(1,1) == LUA_SIGNATURE then - -- bytecode - return (loadstring or load)(reader, ...) - end - local f, s, i = parser.stream(luatokens.defs, reader) - if type(s[parser.DATA]) == "string" and s[parser.DATA]:sub(1,1) == LUA_SIGNATURE then - -- bytecode - local function fn() - fn = reader - return s[parser.DATA] - end - return (loadstring or load)(function() return fn() end, ...) - end - local nl = 1 - local otherstate = {source=chunkname} -- FIXME - local f, s, i = parser.stream(compiler.defs, function() - local tokens - repeat - local pos, state, transemsg, etoken, estate = f(s, i) - otherstate.linenumber = state.line - i = pos - if not i then return nil end - if not state then error(transemsg) end - tokens = {} - for i,v in ipairs(state) do - state[i] = nil - tokens[i] = v - end - until #tokens > 0 or not transemsg - return tokens - end, otherstate) - local function fn() - function fn() - local tokens - repeat - local pos, state, transemsg, etoken, estate, est = f(s, i) - i = pos - if not i then return nil end - if not state then error(transemsg .. " " .. tostring(etoken)) end - tokens = {""} - for i,v in ipairs(state) do - state[i] = nil - tokens[i+1] = v - end - until #tokens > 1 or not transemsg - return table.concat(tokens, " ") - end - local ret = fn() - return string.sub(ret, 2) - end - return load(function() - return fn() - end) -end - -return {load = cratera_load, CRATERA_SEED = CRATERA_SEED} |