71 lines
3.1 KiB
Plaintext
71 lines
3.1 KiB
Plaintext
#!/usr/bin/env nomsu -V5.12.12.8
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#
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This file defines upgrades from Nomsu <2.4 to Nomsu 2.4
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use "compatibility/compatibility.nom"
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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upgrade $tree to "2.4" as:
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unless ($tree is "Action" syntax tree): return
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if $tree.stub is:
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"when" "if":
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if ((size of $tree) == 3): return $tree
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$conditions = []
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$new_lines = []
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$body = (($tree.2 upgraded) if ($tree.2 is "Block" syntax tree) else [$tree.2 upgraded])
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for $line in $body:
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when:
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(not ($line is "Action" syntax tree)): $new_lines|add $line
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($line.stub is "*"):
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if ((size of $line) == 2):
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$conditions|add $line.2
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..else:
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$new_lines|add $line
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($line.stub == "* else"):
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$new_lines|add (\(else $block) with vars {block: $line.3})
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else:
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$conditions|add $line.2
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$action = $line.3
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unless ($action is "Block" syntax tree):
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$action = (=lua "SyntaxTree{type='Block', source=\$action.source, \$action}")
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$conditions|add $action
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$new_lines|
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add (=lua "SyntaxTree{type='Action', source=\$conditions[1].source, unpack(\$conditions)}")
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$conditions = []
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return (..)
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\(when $body) with vars {..}
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body: =lua "SyntaxTree{type='Block', source=\$tree[2].source, unpack(\$new_lines)}"
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"if 1 is ?" "if 1 = ?":
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$values = []
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$new_lines = []
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$body = (($tree.5 upgraded) if ($tree.5 is "Block" syntax tree) else [$tree.5 upgraded])
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for $line in $body:
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when:
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(not ($line is "Action" syntax tree)): $new_lines|add $line
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($line.stub is "*"):
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if ((size of $line) == 2):
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$values|add $line.2
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..else:
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$new_lines|add $line
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($line.stub == "* else"):
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$new_lines|add (\(else $block) with vars {block: $line.3})
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else:
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$values|add $line.2
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$action = $line.3
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unless ($action is "Block" syntax tree): $action = \(: $action)
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$values|add $action
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$new_lines|
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add (=lua "SyntaxTree{type='Action', source=\$values[1].source, unpack(\$values)}")
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$values = []
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return (..)
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\(if $var is $body) with vars {..}
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var: $tree.2 upgraded, body: =lua "SyntaxTree{type='Block', source=\$tree[5].source, unpack(\$new_lines)}"
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