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#!/usr/bin/env nomsu -V4.8.10
#
This file defines upgrades from Nomsu <2.4 to Nomsu 2.4
use "compatibility/compatibility.nom"
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
upgrade %tree to "2.4" as:
unless (%tree is "Action" syntax tree): return
if %tree.stub is:
"when %":
%conditions = []
%new_lines = []
%body = (..)
(%tree.2 upgraded) if (%tree.2 is "Block" syntax tree) else [%tree.2 upgraded]
for %line in %body:
if:
(not (%line is syntax tree)):
compile error at %tree.source "WUT: %s"
(not (%line is "Action" syntax tree)):
%new_lines::add %line
(%line.stub is "* %"):
%conditions::add %line.2
(%line.stub == "* else %"):
%new_lines::add (\(else %block) with vars {block:%line.3})
(%line.stub != "* % %"):
%new_lines::add %line
else:
%conditions::add %line.2
%action = %line.3
unless (%action is "Block" syntax tree):
%action = (=lua "Block(\%action.source, \%action)")
%conditions::add %action
%new_lines::add (=lua "Action(\%conditions[1].source, unpack(\%conditions))")
%conditions = []
return (..)
\(if %body) with vars {body:=lua "Block(\%tree[2].source, unpack(\%new_lines))"}
"when % is ? %" "when % = ? %":
%values = []
%new_lines = []
%body = (..)
(%tree.5 upgraded) if (%tree.5 is "Block" syntax tree) else [%tree.5 upgraded]
for %line in %body:
if:
(not (%line is "Action" syntax tree)):
%new_lines::add %line
(%line.stub is "* %"):
%values::add %line.2
(%line.stub == "* else %"):
%new_lines::add (\(else %block) with vars {block:%line.3})
(%line.stub != "* % %"):
%new_lines::add %line
else:
%values::add %line.2
%action = %line.3
unless (%action is "Block" syntax tree):
%action = \(: %action)
%values::add %action
%new_lines::add (=lua "Action(\%values[1].source, unpack(\%values))")
%values = []
return (..)
\(if %var is %body) with vars {..}
var:%tree.2 upgraded, body:=lua "Block(\%tree[5].source, unpack(\%new_lines))"
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