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#!/usr/bin/env nomsu -V4.10.12.7
#
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" "if":
if ((size of %tree) == 3): return %tree
%conditions = []
%new_lines = []
%body = ((%tree.2 upgraded) if (%tree.2 is "Block" syntax tree) else [%tree.2 upgraded])
for %line in %body:
when:
(not (%line is "Action" syntax tree)):
%new_lines::add %line
(%line.stub is "*"):
if ((size of %line) == 2):
%conditions::add %line.2
..else:
%new_lines::add %line
(%line.stub == "* else"):
%new_lines::add (\(else %block) with vars {block: %line.3})
else:
%conditions::add %line.2
%action = %line.3
unless (%action is "Block" syntax tree):
%action = (=lua "SyntaxTree{type='Block', source=\%action.source, \%action}")
%conditions::add %action
%new_lines::add (..)
=lua "SyntaxTree{type='Action', source=\%conditions[1].source, unpack(\%conditions)}"
%conditions = []
return (..)
\(when %body) with vars {..}
body: =lua "SyntaxTree{type='Block', source=\%tree[2].source, unpack(\%new_lines)}"
"if 1 is ?" "if 1 = ?":
%values = []
%new_lines = []
%body = ((%tree.5 upgraded) if (%tree.5 is "Block" syntax tree) else [%tree.5 upgraded])
for %line in %body:
when:
(not (%line is "Action" syntax tree)):
%new_lines::add %line
(%line.stub is "*"):
if ((size of %line) == 2):
%values::add %line.2
..else:
%new_lines::add %line
(%line.stub == "* else"):
%new_lines::add (\(else %block) with vars {block: %line.3})
else:
%values::add %line.2
%action = %line.3
unless (%action is "Block" syntax tree): %action = \(: %action)
%values::add %action
%new_lines::add (..)
=lua "SyntaxTree{type='Action', source=\%values[1].source, unpack(\%values)}"
%values = []
return (..)
\(if %var is %body) with vars {..}
var: %tree.2 upgraded, body: =lua "SyntaxTree{type='Block', source=\%tree[5].source, unpack(\%new_lines)}"
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