Candran 0.2

Changed a LOT. Notable changes:
* Removed decorators, as they're not that useful, unless rewriting most
Lua libraries API.
* Added functions parameters default values.
* Added Lua 5.3 stuff and building to Lua 5.1.
* Remplaced the LuaMinify parser by lua-parser. It now requires some
non-Lua dependencies (LPeg) unfortunately, but it's waaaaaay easier to
handle. Code should be adaptable to any Metalua-like AST generator
anyway.
* The generated code now look like shit, and comment are stripped,
because the parser ignore them. Oh well.
* Changed a few things in the preprocessor environment.
* Nobody will read this commit message I guess. If you did, create an
issue saying "I love pineapple flavored bread".

lua-parser/scope.lua

@@ -0,0 +1,74 @@
+--[[
+This module implements functions that handle scoping rules 
+]]
+local scope = {}
+
+function scope.lineno (s, i)
+  if i == 1 then return 1, 1 end
+  local l, lastline = 0, ""
+  s = s:sub(1, i) .. "\n"
+  for line in s:gmatch("[^\n]*[\n]") do
+    l = l + 1
+    lastline = line
+  end
+  local c = lastline:len() - 1
+  return l, c ~= 0 and c or 1
+end
+
+function scope.new_scope (env)
+  if not env.scope then
+    env.scope = 0
+  else
+    env.scope = env.scope + 1
+  end
+  local scope = env.scope
+  env.maxscope = scope
+  env[scope] = {}
+  env[scope]["label"] = {}
+  env[scope]["local"] = {}
+  env[scope]["goto"] = {}
+end
+
+function scope.begin_scope (env)
+  env.scope = env.scope + 1
+end
+
+function scope.end_scope (env)
+  env.scope = env.scope - 1
+end
+
+function scope.new_function (env)
+  if not env.fscope then
+    env.fscope = 0
+  else
+    env.fscope = env.fscope + 1
+  end
+  local fscope = env.fscope
+  env["function"][fscope] = {}
+end
+
+function scope.begin_function (env)
+  env.fscope = env.fscope + 1
+end
+
+function scope.end_function (env)
+  env.fscope = env.fscope - 1
+end
+
+function scope.begin_loop (env)
+  if not env.loop then
+    env.loop = 1
+  else
+    env.loop = env.loop + 1
+  end
+end
+
+function scope.end_loop (env)
+  env.loop = env.loop - 1
+end
+
+function scope.insideloop (env)
+  return env.loop and env.loop > 0
+end
+
+return scope