diff --git a/src/ast.lua b/src/ast.lua
deleted file mode 100644
index 09a0c83..0000000
--- a/src/ast.lua
+++ /dev/null
@@ -1,286 +0,0 @@
---[[
-	ast.lua - Generates a structure for use in preprocessing.
-]]
--- This Source Code Form is subject to the terms of the Mozilla Public
--- License, v. 2.0. If a copy of the MPL was not distributed with this
--- file, You can obtain one at https://mozilla.org/MPL/2.0/.
-
-local function nextc(f, c)
-	c = c or 1
-	return f:read(c)
-end
-
-local function peek(f, c)
-	c = c or 1
-	local z = f:read(c)
-	f:seek("cur", -c)
-	return z
-end
-
-local function skip(f, c)
-	c = c or 1
-	return f:seek("cur", c)
-end
-
-local ws = {
-	["\t"] = true,
-	[" "] = true
-}
-
-local function parse_hex(f)
-	local lc = " "
-	local hex = ""
-	while (48 <= lc:byte() and lc:byte() <= 57) or (97 <= lc:byte() and lc:byte() <= 102) or (65 <= lc:byte() and lc:byte() <= 70) and lc do
-		lc = nextc(f)
-		if (48 <= lc:byte() and lc:byte()) <= 57 or (97 <= lc:byte() and lc:byte() <= 102) or (65 <= lc:byte() and lc:byte() <= 70) and lc then
-			hex = hex .. lc
-		end
-	end
-	return tonumber(hex, 16)
-end
-
-local function parse_number(f, c)
-	local lc = " "
-	local num = c
-	while 48 <= lc:byte() and lc:byte() <= 57 and lc do
-		lc = nextc(f)
-		if (48 <= lc:byte() and lc:byte() <= 57) and lc then
-			num = num .. lc
-		end
-	end
-	return tonumber(hex, 10)
-end
-
-local esct = {
-	["t"] = "\t",
-	["n"] = "\n",
-	["r"] = "\r",
-	["\\"] = "\\\\"
-}
-
-for i=0, 9 do
-	esct[tostring(i)] = string.char(i)
-end
-
-local function parse_dblquote(f)
-	local val = ""
-	while peek(f) ~= "\"" do
-		local c = nextc(f)
-		if (peek(f) == "\n" or peek(f) == "\r") then
-			return nil, "Unexpected end of line"
-		elseif (not peek(f)) then
-			return nil, "Unexpected end of file"
-		end
-		if (c == "\\") then
-			if (esct[peek(f)]) then
-				c = esct[peek(f)]
-				skip(f)
-			else
-				c = nextc(f)
-			end
-		end
-		val = val .. c
-	end
-	skip(f)
-	return val
-end
-
-local function parse_snglquote(f)
-	local val = ""
-	while peek(f) ~= "\'" do
-		local c = nextc(f)
-		if (peek(f) == "\n" or peek(f) == "\r") then
-			return nil, "Unexpected end of line"
-		elseif (not peek(f)) then
-			return nil, "Unexpected end of file"
-		end
-		if (c == "\\") then
-			if (esct[peek(f)]) then
-				c = esct[peek(f)]
-				skip(f)
-			else
-				c = nextc(f)
-			end
-		end
-		val = val .. c
-	end
-	skip(f)
-	return val
-end
-
-local function parse_envarg(f)
-	local val = ""
-	while peek(f) ~= ")" do
-		if (peek(f) == "\n" or peek(f) == "\r") then
-			return nil, "Unexpected end of line"
-		elseif (not peek(f)) then
-			return nil, "Unexpected end of file"
-		end
-		val = val .. nextc(f)
-	end
-	skip(f)
-	return val
-end
-
-local function parse_directive(f)
-	local lc = "_"
-	local name = ""
-	local args = {}
-	local carg = ""
-	while not ws[lc] do
-		lc = nextc(f)
-		if (lc == "\n" or lc == "\r") then
-			if (lc == "\r" and peek(f) == "\n") then skip(f) end
-			return {type="directive", name=name}
-		elseif not ws[lc] then
-			name = name .. lc
-		end
-	end
-	while true do
-		lc = nextc(f)
-		if (lc == "\n" or lc == "\r") then
-			if (lc == "\r" and peek(f) == "\n") then skip(f) end
-			return {type="directive", name=name, args=args}
-		elseif lc == "0" and peek(f) == "x" then
-			skip(f)
-			local val = parse_hex(f)
-			args[#args+1] = val
-		elseif 48 <= lc:byte() and lc:byte() <= 57 then
-			local val = parse_number(f, lc)
-			args[#args+1] = val
-		elseif lc == "\"" then
-			local val, e = parse_dblquote(f)
-			if not val then return val, e end
-			args[#args+1] = val
-		elseif lc == "\'" then
-			local val, e = parse_snglquote(f)
-			if not val then return val, e end
-			args[#args+1] = val
-		elseif lc == "$" and peek(f) == "(" then
-			skip(f)
-			local val = parse_envarg(f)
-			if not os.getenv(val) then return nil, "Enviroment variable `"..val.."' does not exist." end
-			args[#args+1] = os.getenv(val)
-		elseif lc == "@" and peek(f, 2) == "[{" then
-			skip(f, 2)
-			local val = ""
-			while peek(f, 2) ~= "}]" do
-				val = val .. nextc(f)
-			end
-			args[#args+1] = {type="lua_var", val}
-			skip(f, 2)
-		elseif not ws[lc] then
-			return nil, "Syntax error"
-		end
-	end
-end
-
-local function mkast(f, n)
-	io.stderr:write("PROC\t",n,"\n")
-	local lc = " "
-	local lpos = 1
-	local ilpos = 1
-	local tree = {}
-	local code = ""
-	local branches = {}
-	local function add_code()
-		tree[#tree+1] = {type="code", data=code, file=n, line=lpos}
-		code = ""
-	end
-	local function parse_error(e)
-		io.stderr:write("ERROR:"..n..":"..lpos..": "..e.."\n")
-		os.exit(1)
-	end
-	while lc and lc ~= "" do
-		lc = nextc(f)
-		if (lc == "-" and ilpos == 1) then
-			if (peek(f, 2) == "-#") then --Directive
-				add_code()
-				skip(f, 2)
-				local d, r = parse_directive(f)
-				if not d then
-					parse_error(r)
-				end
-				d.line = lpos
-				d.file = n
-				lpos = lpos+1
-				tree[#tree+1] = d
-			else
-				code = code .. lc
-				ilpos = ilpos+1
-			end
-		elseif (lc == "/" and ilpos == 1) then
-			if (peek(f, 2) == "/#") then --Directive
-				add_code()
-				skip(f, 2)
-				local d, r = parse_directive(f)
-				if not d then
-					parse_error(r)
-				end
-				d.line = lpos
-				d.file = n
-				lpos = lpos+1
-				tree[#tree+1] = d
-			else
-				code = code .. lc
-				ilpos = ilpos+1
-			end
-		elseif (lc == "$" and peek(f) == "(") then
-			add_code()
-			skip(f)
-			local val, e = parse_envarg(f)
-			if not val then
-				parse_error(e)
-			end
-			tree[#tree+1] = {type="envvar", var=val, file=n, line=lpos}
-		elseif (lc == "@" and peek(f, 2) == "[[") then
-			add_code()
-			skip(f, 2)
-			local val = ""
-			while peek(f, 2) ~= "]]" do
-				val = val .. nextc(f)
-			end
-			tree[#tree+1] = {type="lua", code=val, file=n, line=lpos}
-			skip(f, 2)
-		elseif (lc == "@" and peek(f, 2) == "[{") then
-			add_code()
-			skip(f, 2)
-			local val = ""
-			while peek(f, 2) ~= "}]" do
-				val = val .. nextc(f)
-			end
-			tree[#tree+1] = {type="lua_r", code=val, file=n, line=lpos}
-			skip(f, 2)
-		elseif (lc == "$" and peek(f, 2) == "[[") then
-			add_code()
-			skip(f, 2)
-			local val = ""
-			while peek(f, 2) ~= "]]" do
-				val = val .. nextc(f)
-			end
-			tree[#tree+1] = {type="shell", code=val, file=n, line=lpos}
-			skip(f, 2)
-		elseif (lc == "$" and peek(f, 2) == "[{") then
-			add_code()
-			skip(f, 2)
-			local val = ""
-			while peek(f, 2) ~= "}]" do
-				val = val .. nextc(f)
-			end
-			tree[#tree+1] = {type="shell_r", code=val, file=n, line=lpos}
-			skip(f, 2)
-		elseif (lc == "\r" or lc == "\n") then
-			if (lc == "\r" and peek(f) == "\n") then
-				skip(f)
-			end
-			lpos = lpos+1
-			ilpos = 1
-			code = code .. "\n"
-		else
-			code = code .. (lc or "")
-			ilpos = ilpos+1
-		end
-	end
-	add_code()
-	return tree
-end
\ No newline at end of file
diff --git a/src/directives/pragma.lua b/src/directives/pragma.lua
index 20431bd..af3a36c 100644
--- a/src/directives/pragma.lua
+++ b/src/directives/pragma.lua
@@ -2,6 +2,14 @@
 -- License, v. 2.0. If a copy of the MPL was not distributed with this
 -- file, You can obtain one at https://mozilla.org/MPL/2.0/.
 
+local pragma_hooks = {
+	include_once = function(env, value)
+		if value and value ~= 0 then
+
+		end
+	end
+}
+
 function directives.pragma(env, key, value)
 	if not env.pragmas[key] then
 		return nil, "unknown pragma "..key
diff --git a/src/generator.lua b/src/generator.lua
deleted file mode 100644
index ac463ea..0000000
--- a/src/generator.lua
+++ /dev/null
@@ -1,138 +0,0 @@
---[[
-	generator.lua - Generates the code.
-]]
-
--- This Source Code Form is subject to the terms of the Mozilla Public
--- License, v. 2.0. If a copy of the MPL was not distributed with this
--- file, You can obtain one at https://mozilla.org/MPL/2.0/.
-
-local function lua_escape(code)
-   return code:gsub("\\", "\\\\"):gsub("\"", "\\\""):gsub("\n", "\\n")
-end
-
-local function shell_escape(code)
-   return code:gsub("\\%[", "[")
-end
-
-local function svar_escape(code)
-   return code:gsub("\"", "\\\""):gsub("\'", "\\\'"):gsub("`", "\\`")
-end
-
-local directives = {}
-
-local function generate(ast, gencode)
-   local lua_code = ""
-   for i=1, #ast do
-      local leaf = ast[i]
-      if (leaf.type == "lua") then
-         lua_code = lua_code .. leaf.code
-      elseif (leaf.type == "directive") then
-         local stargs = {}
-         for i=1, #leaf.args do
-            local arg = leaf.args[i]
-            if (type(arg) == "string") then
-               stargs[i] = "\""..lua_escape(arg).."\""
-            elseif (type(arg) == "number") then
-               stargs[i] = tostring(arg)
-            elseif (type(arg) == "table" and arg.type=="lua_var") then
-               stargs[i] = arg[1]
-            end 
-         end
-         lua_code = lua_code .. "call_directive(\""..leaf.file..":"..tostring(leaf.line).."\",\""..leaf.name.."\","..table.concat(stargs, ",")..")"
-      elseif (leaf.type == "envvar") then
-         lua_code = lua_code .. "put_env(\""..leaf.file..":"..tostring(leaf.line).."\",\""..leaf.var.."\")"
-      elseif (leaf.type == "code") then
-         lua_code = lua_code .. "put_code(\""..leaf.file..":"..tostring(leaf.line).."\",\"" .. lua_escape(leaf.data) .. "\")"
-      elseif (leaf.type == "lua_r") then
-         lua_code = lua_code .. "put_code(\""..leaf.file..":"..tostring(leaf.line).."\",tostring("..leaf.code.."))"
-      elseif (leaf.type == "shell") then
-         lua_code = lua_code .. "put_shell_out(\""..leaf.file..":"..tostring(leaf.line).."\",\""..lua_escape(leaf.code).."\")"
-      elseif (leaf.type == "shell_r") then
-         lua_code = lua_code .. "put_svar(\""..leaf.file..":"..tostring(leaf.line).."\",\""..leaf.code.."\")"
-      else
-         io.stderr:write("ERROR: Internal catastrophic failure, unknown type "..leaf.type.."\n")
-         os.exit(1)
-      end
-      lua_code = lua_code .. "\n"
-   end
-   local env = {code = ""}
-   local function run_away_screaming(fpos, err)
-      io.stdout:write("ERROR: "..fpos..": "..err.."\n")
-      os.exit(1)
-   end
-   local function bitch(fpos, err)
-      io.stdout:write("WARNING: "..fpos..": "..err.."\n")
-   end
-   local function call_directive(fpos, dname, ...)
-      if (not directives[dname]) then
-         run_away_screaming(fpos, "Invalid directive name `"..dname.."'")
-      end
-      local r, er = directives[dname](env, ...)
-      if (not r) then
-         run_away_screaming(fpos, er)
-      end
-   end
-   local function put_env(fpos, evar)
-      local e = svar.get(evar)
-      if not e then
-         run_away_screaming(fpos, "Enviroment variable `"..evar.."' does not exist!")
-      end
-      env.code = env.code .. "\""..lua_escape(e).."\""
-   end
-   local function put_code(fpos, code)
-      env.code = env.code .. code --not much that can fail here...
-   end
-   local function put_shell_out(fpos, code)
-      local tname = os.tmpname()
-      local f = os.tmpname()
-      local fh = io.open(f, "w")
-      fh:write(code)
-      fh:close()
-      os.execute("chmod +x "..f)
-      local vars = svar.get_all()
-      local vstr = ""
-      for k, v in pairs(vars) do
-         vstr = vstr .. k.."=".."\""..svar_escape(v).."\" "
-      end
-      dprint("Shell", vstr .. f.." "..tname)
-      local h = io.popen(vstr .. f.." "..tname, "r")
-      local output = h:read("*a"):gsub("\n$", "")
-      local ok, sig, code = h:close()
-      fh = io.open(tname, "r")
-      local stderr = fh:read("*a"):gsub("\n$", "")
-      fh:close()
-      os.remove(f)
-      os.remove(tname)
-      if not ok then
-         run_away_screaming(fpos, "Shell exit code "..code..", SIG_"..sig:upper().."\n"..stderr)
-      elseif #stderr > 0 then
-         bitch(fpos, stderr)
-      end
-      env.code = env.code .. output
-   end
-   local function put_svar(fpos, evar)
-      local e = svar.get(evar)
-      if not e then
-         run_away_screaming(fpos, "Enviroment variable `"..evar.."' does not exist!")
-      end
-      env.code = env.code .. e
-   end
-   local fenv = {}
-   for k, v in pairs(_G) do
-      fenv[k] = v
-   end
-   if gencode then
-      return lua_code
-   end
-   fenv._G = fenv
-   fenv._ENV = fenv
-   fenv.call_directive = call_directive
-   fenv.put_code = put_code
-   fenv.put_env = put_env
-   fenv.put_svar = put_svar
-   fenv.put_shell_out = put_shell_out
-   fenv._GENERATOR=env
-   local func = assert(load(lua_code, "=(generated code: "..ast.file..")", "t", fenv))
-   func()
-   return env.code
-end
\ No newline at end of file