#5406: Template Haskell: Reification of type family instances
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Reporter: reinerp | Owner:
Type: feature request | Status: new
Priority: normal | Milestone:
Component: Template Haskell | Version: 7.0.4
Keywords: | Testcase:
Blockedby: | Difficulty:
Os: Unknown/Multiple | Blocking:
Architecture: Unknown/Multiple | Failure: None/Unknown
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Comment(by simonpj@…):
commit 10c882760aea96a679a98bf76a603c1eeb99ecb8
{{{
Author: Simon Peyton Jones <[email protected]>
Date: Tue Aug 23 13:46:43 2011 +0100
Implement lookupTypeName/lookupValueName, and reification of type
family instances
This patch (and its TH counterpart) implements
Trac #4429 (lookupTypeName, lookupValueName)
Trac #5406 (reification of type/data family instances)
See detailed discussion in those tickets.
TH.ClassInstance is no more; instead reifyInstances returns a [Dec],
which requires fewer data types and natuarally accommodates family
instances.
'reify' on a type/data family now returns 'FamilyI', a new data
constructor in 'Info'
compiler/typecheck/TcHsType.lhs | 2 +-
compiler/typecheck/TcSplice.lhs | 163
++++++++++++++++++++++++++++----------
2 files changed, 121 insertions(+), 44 deletions(-)
}}}
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5406#comment:5>
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