33 lines
1.4 KiB
Plaintext
33 lines
1.4 KiB
Plaintext
#!/usr/bin/env nomsu -V7.0.0
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###
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This file defines upgrades from Nomsu 1 to Nomsu 2
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use "compatibility/compatibility"
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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upgrade $tree to "2" as:
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unless ($tree is "Action" syntax tree): return
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if ($tree.stub == "if 1 2 else"):
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$true_body = $tree.3
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unless ($true_body is "Block" syntax tree):
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$true_body = ("Block" tree with $true_body)
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$false_body = $tree.5
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unless ($false_body is "Block" syntax tree):
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$false_body = (=lua "Block(\$false_body.source, \$false_body)")
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return \(if \$tree.2 \$true_body else \$false_body)
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$need_blocks = [
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"if", "unless", "for 1 in", "for 1 = 2 in", "repeat while 1", "repeat 1 times"
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"repeat", "repeat until 1", "for 1 in 2 to 3 by", "for 1 in 2 to 3 via"
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"for 1 in 2 to", "for 1 2 in", "do", "for 1 in recursive", "test", "with"
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"result of", "when"
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]
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for $n in $need_blocks:
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if ($tree.stub == $n):
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$bits = [: for $ in $tree: add ($ if ($ is syntax tree) else $)]
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unless (($bits, last) is "Block" syntax tree):
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$body = ($bits, last)
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$bits.(#$bits) = (=lua "SyntaxTree{type='Block', source=\$body.source, \$body}")
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return (=lua "SyntaxTree{type='Action', source=\$tree.source, unpack(\$bits)}") |