[commit: ghc] master: Allow proper errors/warnings in core2core passes (e2b5738)

[git at git.haskell.org]

Repository : ssh://git@git.haskell.org/ghc

On branch  : master
Link       : http://ghc.haskell.org/trac/ghc/changeset/e2b5738141d1f60858e53ed1edd7167b1a93800c/ghc

>---------------------------------------------------------------

commit e2b5738141d1f60858e53ed1edd7167b1a93800c
Author: Simon Peyton Jones <simonpj at microsoft.com>
Date:   Wed Aug 5 13:31:48 2015 +0100

    Allow proper errors/warnings in core2core passes
    
    This patch makes it possible for core-to-core passes to emit
    proper error messages and warnings.
    
      * New function CoreMonad.warnMsg
    
      * CoreMonad.warnMsg and errorMsg now print a proper warning/error
        message heading.
    
      * CoreMonad carries a SrcSpan, which is used in warning/error
        messages.  It is initialised to be the source file name, but
        a core-to-core pass could set it more specifically if it had
        better location information.
    
    There was a bit of plumbing needed to get the filename to the
    right place.


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e2b5738141d1f60858e53ed1edd7167b1a93800c
 compiler/basicTypes/SrcLoc.hs   | 10 ++++---
 compiler/coreSyn/CoreLint.hs    |  3 +-
 compiler/deSugar/Desugar.hs     |  7 +++++
 compiler/main/ErrUtils.hs       | 17 +++++++++--
 compiler/main/ErrUtils.hs-boot  |  5 ++--
 compiler/main/HscMain.hs        |  2 ++
 compiler/main/HscTypes.hs       |  1 +
 compiler/simplCore/CoreMonad.hs | 66 ++++++++++++++++++++++++++++-------------
 compiler/simplCore/SimplCore.hs | 14 +++++----
 9 files changed, 90 insertions(+), 35 deletions(-)

Diff suppressed because of size. To see it, use:

    git diff-tree --root --patch-with-stat --no-color --find-copies-harder --ignore-space-at-eol --cc e2b5738141d1f60858e53ed1edd7167b1a93800c