chak 2005/03/03 03:48:04 PST
Modified files:
ghc/compiler/deSugar DsListComp.lhs
Log:
Merge to STABLE
Fixed two bugs:
* #1035575 from SourceForge (by adding smart constructors for source tuple
construction at value and type level)
* Parallel array comprehensions were handled wrongly
- The singleton expression-pattern pair `()'-`[:():]' is the neutral element
for cross products (comma notation in comprehensions), but not for
parallel comprehensions.
- Now groups of parallel statements are handled separately (which is more
like the vanilla list comprehension case).
- The code is too general in that it correctly handles cross-products of
groups of parallel qualifiers. As this is correctly handled in the
list and the array comprehension case, the syntax may be generalised to
allow arbitrary nesting of cross-products and parallel qualifiers.
Revision Changes Path
1.50 +50 -18 fptools/ghc/compiler/deSugar/DsListComp.lhs
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