34 lines
1.5 KiB
Plaintext
34 lines
1.5 KiB
Plaintext
#!/usr/bin/env nomsu -V2.5.5.4
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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.nom"
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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 is "if % % else %"):
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%true_body = (%tree.3 upgraded)
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unless (%true_body is "Block" syntax tree):
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%true_body = (=lua "Block(\%true_body.source, \%true_body)")
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%false_body = (%tree.5 upgraded)
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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 (..)
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\(if %cond %true_body else %false_body) with vars {..}
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cond:%tree.2 upgraded, true_body:%true_body, false_body:%false_body
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%need_blocks = [..]
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"if % %", "unless % %", "for % in % %", "for % = % in % %", "repeat while % %"
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"repeat % times %", "repeat %", "repeat until % %", "for % in % to % by % %"
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"for % in % to % via % %", "for % in % to % %", "for % % in % %"
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"do %", "for % in recursive % %", "test %", "with % %", "result of %"
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for %n in %need_blocks:
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if (%tree.stub is %n):
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%bits = (((% upgraded) if (% is syntax tree) else %) for % in %tree)
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unless ((last in %bits) is "Block" syntax tree):
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%body = (last in %bits)
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%bits.(length of %bits) = (=lua "Block(\%body.source, \%body)")
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return (=lua "Action(\%tree.source, unpack(\%bits))")
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