40 lines
1.2 KiB
Plaintext
40 lines
1.2 KiB
Plaintext
# LLgen: LL(1) parser generator
|
|
# variables: LLGEN, LLFLAGS
|
|
|
|
# tool definition for the new version of LLgen that allows for more than
|
|
# one parser in one program. Unfortunately, for historical reasons there
|
|
# is no proper default prefix for LLgen-generated files (LL.output versus
|
|
# Lpars.[ch]). If LLgen would generate LLpars.[ch] instead of Lpars.[ch],
|
|
# we could have a default value for prefix of 'LL', which would make
|
|
# things a bit more simple.
|
|
|
|
%instance deftypesuffix(LLgen-src, '%.g') ;
|
|
|
|
%include ack-defs.amk;
|
|
|
|
%if (%not defined(LLGEN), {
|
|
LLGEN = $EMHOME/bin/LLgen;
|
|
});
|
|
|
|
%if (%not defined(LLFLAGS), {
|
|
LLFLAGS = {};
|
|
});
|
|
|
|
%tool LLgen (
|
|
verbose: %boolean => %false;
|
|
flags: %string %list => $LLFLAGS;
|
|
prefix: %string => '';
|
|
src: %in %list [type = LLgen-src];
|
|
parser: %out %list [type = C-src]
|
|
=> match($src) + if($prefix == '', Lpars.c, $prefix'pars.c');
|
|
tokens: %out [type = C-incl, compare]
|
|
=> if($prefix == '', Lpars.h, $prefix'pars.h');
|
|
diagn: %out [type = text]
|
|
=> if($prefix == '', LL.output, $prefix.output) %conform $verbose;
|
|
cmd: %in [type = command] => $LLGEN;
|
|
)
|
|
{
|
|
exec($cmd, args => if($verbose, {'-vvv'}, {}) + $flags + $src);
|
|
echo({'LLgen ', $src, ' done'});
|
|
};
|