31 lines
1.6 KiB
Plaintext
31 lines
1.6 KiB
Plaintext
#!/usr/bin/env nomsu -V2
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use "core"
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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 (all[%tree.stub is "if % % else %", not (%tree.3 is "Var" syntax tree), not (%tree.5 is "Var" syntax tree)]):
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%true_body <- (%tree.3 upgraded from "1.2")
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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 from "1.2")
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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)
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..with vars {..}
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cond:%tree.2 upgraded from "1.2", 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 % %", "do %"
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"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) and (not ((last in %tree) is "Var" syntax tree))):
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%bits <- (((% upgraded from "1.2") 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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