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| author | RyanGlScott <ryan.gl.scott@gmail.com> | 2015-10-13 00:43:32 -0500 |
|---|---|---|
| committer | Austin Seipp <austin@well-typed.com> | 2015-10-13 00:43:42 -0500 |
| commit | d2f9972a35ce05ceb8a78893e433ef1df06f73ef (patch) | |
| tree | bc3cee0ec99aacd64298993fde590c017734c6e6 /libraries/base/Numeric.hs | |
| parent | 94ef79a766a1f58a5daadcf7dbb342812cd1a9bd (diff) | |
| download | haskell-d2f9972a35ce05ceb8a78893e433ef1df06f73ef.tar.gz | |
Make dataToQa aware of Data instances which use functions to implement toConstr
Trac #10796 exposes a way to make `template-haskell`'s `dataToQa` function
freak out if using a `Data` instance that produces a `Constr` (by means of
`toConstr`) using a function name instead of a data constructor name. While
such `Data` instances are somewhat questionable, they are nevertheless present
in popular libraries (e.g., `containers`), so we can at least make `dataToQa`
aware of their existence.
In order to properly distinguish strings which represent variables (as opposed
to data constructors), it was necessary to move functionality from `Lexeme` (in
`ghc`) to `GHC.Lexeme` in a new `ghc-boot` library (which was previously named
`bin-package-db`).
Reviewed By: goldfire, thomie
Differential Revision: https://phabricator.haskell.org/D1313
GHC Trac Issues: #10796
Diffstat (limited to 'libraries/base/Numeric.hs')
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