February 2007 - C2hs - Haskell.org

help a newbie?
by Eric Sessoms 26 Feb '07

26 Feb '07

I'm working on a problem that looks, to my eye, identical to the example in section 2.10 of the documentation http://www.cse.unsw.edu.au/~chak/haskell/c2hs/docu/c2hs-2.html#ss2.10 --- cut here --- module Test where #c typedef struct { int dummy; } fitsfile; int ffclos(fitsfile *fptr, int *status); #endc {# pointer *fitsfile as FitsFile newtype #} {# fun ffclos { `FitsFile', `Int' } -> `Int' #} --- cut here -- But running c2hs I get an error message that I haven't been able to make use of: Test.chs:13: (column 17) [ERROR] >>> Missing "in" marshaller! There is no default marshaller for this combination of Haskell and C type: Haskell type: FitsFile C type : (FitsFile) I'm particularly puzzled because the corresponding "open" function (much more complex, omitted for brevity) that marshals a **fitsfile doesn't give me any problems. Suggestions? Thanks much, Eric

3 4

patch applied (c2hs): Parse C99 compound statements with mixed declarations and statements
by Duncan Coutts 23 Feb '07

23 Feb '07

Fri Feb 23 02:47:40 PST 2007 Duncan Coutts <duncan.coutts(a)worc.ox.ac.uk> * Parse C99 compound statements with mixed declarations and statements Rather than the K&R/C89 requirement that declarations precede statements. The AST is now a list of eithers rather than two lists. Note also that we're now saving and restoring the set of typedef'ed identifiers as we enter and leave the scope of the compound statement. M ./c2hs/c/CParser.y -15 +30

1 0

patch applied (c2hs): Expand the enumerator_list and eliminate the enumerator_list_ production
by Duncan Coutts 23 Feb '07

23 Feb '07

Fri Feb 23 02:38:16 PST 2007 Duncan Coutts <duncan.coutts(a)worc.ox.ac.uk> * Expand the enumerator_list and eliminate the enumerator_list_ production This is more in keeping with the standard C99 grammar. M ./c2hs/c/CParser.y -10 +8

1 0

patch applied (c2hs): Use an optional expression production to simplify a couple productions.
by Duncan Coutts 23 Feb '07

23 Feb '07

Fri Feb 23 02:34:28 PST 2007 Duncan Coutts <duncan.coutts(a)worc.ox.ac.uk> * Use an optional expression production to simplify a couple productions. M ./c2hs/c/CParser.y -13 +10

1 0

patch applied (c2hs): Parse string literals more in the spirit of C99
by Duncan Coutts 23 Feb '07

23 Feb '07

Thu Feb 22 16:36:45 PST 2007 Duncan Coutts <duncan.coutts(a)worc.ox.ac.uk> * Parse string literals more in the spirit of C99 M ./c2hs/c/CParser.y -27 +23

1 0

patch applied (c2hs): Tidy up parsing of comma expressions
by Duncan Coutts 23 Feb '07

23 Feb '07

Thu Feb 22 16:31:38 PST 2007 Duncan Coutts <duncan.coutts(a)worc.ox.ac.uk> * Tidy up parsing of comma expressions M ./c2hs/c/CParser.y -7 +9

1 0

patch applied (c2hs): Use a newtype for building reversed lists
by Duncan Coutts 23 Feb '07

23 Feb '07

Thu Feb 22 16:21:30 PST 2007 Duncan Coutts <duncan.coutts(a)worc.ox.ac.uk> * Use a newtype for building reversed lists When building lists up in reverse it's rather easy to forget to reverse them when we get to the top level. So introduce a newtype and operations for reversed lists. This way the type will tell us where we've forgot to reverse (and there were one or two places) M ./c2hs/c/CParser.y -46 +77

1 0

patch applied (c2hs): Oops, missed a few K&R -> C99 section number changes
by Duncan Coutts 23 Feb '07

23 Feb '07

Thu Feb 22 15:00:47 PST 2007 Duncan Coutts <duncan.coutts(a)worc.ox.ac.uk> * Oops, missed a few K&R -> C99 section number changes M ./c2hs/c/CParser.y -3 +3

1 0

patch applied (c2hs): Use section names from the C99 report rather than from K&R
by Duncan Coutts 23 Feb '07

23 Feb '07

Thu Feb 22 14:42:21 PST 2007 Duncan Coutts <duncan.coutts(a)worc.ox.ac.uk> * Use section names from the C99 report rather than from K&R Many grammar productions have notes which refer to the C spec, since we're targeting C99 now make them refer to the section numbers in the C99 report rather than from K&R. M ./c2hs/c/CParser.y -42 +42

1 0

patch applied (c2hs): Remove GNU C attributes from the grammar
by Duncan Coutts 23 Feb '07

23 Feb '07

Thu Feb 22 14:30:41 PST 2007 Duncan Coutts <duncan.coutts(a)worc.ox.ac.uk> * Remove GNU C attributes from the grammar since they are now recognised and discarded by the lexer. M ./c2hs/c/CParser.y -16 +13

1 0