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author | 2015-11-13 11:43:34 +0100 | |
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committer | 2015-11-13 11:43:34 +0100 | |
commit | 4e76c4f01b69b77f40686e06c4544aa156efaa5a (patch) | |
tree | aefad2e3de35f75c46729f9310d33b56d3821961 /plugins/extraction/ExtrHaskellString.v | |
parent | 64fa31c7ee53e79b112507fb2eea27dc7648328d (diff) | |
parent | 91dbeab8eef959c3f64960909ca69d4e68c8198d (diff) |
Imported Upstream version 8.5~beta3+dfsg
Diffstat (limited to 'plugins/extraction/ExtrHaskellString.v')
-rw-r--r-- | plugins/extraction/ExtrHaskellString.v | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/plugins/extraction/ExtrHaskellString.v b/plugins/extraction/ExtrHaskellString.v new file mode 100644 index 00000000..3558f4f2 --- /dev/null +++ b/plugins/extraction/ExtrHaskellString.v @@ -0,0 +1,38 @@ +(** + * Special handling of ascii and strings for extraction to Haskell. + *) + +Require Import Ascii. +Require Import String. + +(** + * At the moment, Coq's extraction has no way to add extra import + * statements to the extracted Haskell code. You will have to + * manually add: + * + * import qualified Data.Bits + * import qualified Data.Char + *) + +Extract Inductive ascii => "Prelude.Char" + [ "(\b0 b1 b2 b3 b4 b5 b6 b7 -> Data.Char.chr ( + (if b0 then Data.Bits.shiftL 1 0 else 0) Prelude.+ + (if b1 then Data.Bits.shiftL 1 1 else 0) Prelude.+ + (if b2 then Data.Bits.shiftL 1 2 else 0) Prelude.+ + (if b3 then Data.Bits.shiftL 1 3 else 0) Prelude.+ + (if b4 then Data.Bits.shiftL 1 4 else 0) Prelude.+ + (if b5 then Data.Bits.shiftL 1 5 else 0) Prelude.+ + (if b6 then Data.Bits.shiftL 1 6 else 0) Prelude.+ + (if b7 then Data.Bits.shiftL 1 7 else 0)))" ] + "(\f a -> f (Data.Bits.testBit (Data.Char.ord a) 0) + (Data.Bits.testBit (Data.Char.ord a) 1) + (Data.Bits.testBit (Data.Char.ord a) 2) + (Data.Bits.testBit (Data.Char.ord a) 3) + (Data.Bits.testBit (Data.Char.ord a) 4) + (Data.Bits.testBit (Data.Char.ord a) 5) + (Data.Bits.testBit (Data.Char.ord a) 6) + (Data.Bits.testBit (Data.Char.ord a) 7))". +Extract Inlined Constant Ascii.ascii_dec => "(Prelude.==)". + +Extract Inductive string => "Prelude.String" [ "([])" "(:)" ]. +Extract Inlined Constant String.string_dec => "(Prelude.==)". |