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Reimplement a lexer in C for the C bindings not to depend on GF.Text.Lexing for now.

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kevin.kofler
2010-05-16 19:43:44 +00:00
parent b93c405c28
commit db2a0e092d
4 changed files with 22 additions and 19 deletions
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16
contrib/c-bindings/readme-ffi.txt
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@@ -1,5 +1,5 @@
GF C Bindings
Copyright (C) 2008-2009 Kevin Kofler
Copyright (C) 2008-2010 Kevin Kofler
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
@@ -109,10 +109,12 @@ void gf_freeTrees(GF_Tree *p);
In addition, the following function from GF.Text.Lexing:
In addition, a C equivalent to the following function from GF.Text.Lexing:
stringOp :: String -> Maybe (String -> String)
is wrapped as:
char *gf_stringOp(char *op, char *str)
which returns NULL if op is not a valid operation name, otherwise applies the
function corresponding to op to the string str. The resulting string must be
freed with free if non-NULL.
is provided as:
typedef char *(*GF_StringOp)(const char *str);
GF_StringOp gf_stringOp(const char *op); /* may return NULL */
which returns NULL if op is not a valid operation name, otherwise a pointer to a
function which applies the function corresponding to op to the string str. The
resulting string must be freed with free. The function pointer MUST NOT be
freed.