Future/bison
1
0
Fork 0
mirror of https://git.savannah.gnu.org/git/bison.git synced 2026-03-09 12:23:04 +00:00
Code Issues Packages Projects Releases Wiki Activity

traces: provide a means to get short m4 traces

Browse Source 
Let --trace=m4-early dump all the logs from the start (as --trace=m4
used to do), and have --trace=m4 now start traces only when actually
working of the user's grammar.

Can make a big difference in the case of small inputs.  E.g.

    $ bison -S tests/testsuite.dir/001/input.m4 tests/testsuite.dir/001/input.y --trace=m4 |& wc
       3952   19446  251068
    $ bison -S tests/testsuite.dir/001/input.m4 tests/testsuite.dir/001/input.y --trace=m4-early |& wc
      19491  131904 1830495

* data/skeletons/traceon.m4: New.
* src/getargs.h, src/getargs.c: Introduce --trace=m4-early.
* src/output.c (output_skeleton): Adjust for --trace=m4 and --trace=m4-early.
This commit is contained in:
Akim Demaille
2020-05-21 18:02:17 +02:00
parent 94952779b6
commit 1ebc2ac55c
5 changed files with 19 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
data/local.mk
View File

@@ -34,6 +34,7 @@ dist_skeletons_DATA = \
data/skeletons/lalr1.java \
data/skeletons/location.cc \
data/skeletons/stack.hh \
data/skeletons/traceon.m4 \
data/skeletons/variant.hh \
data/skeletons/yacc.c

2
data/skeletons/traceon.m4 Normal file
View File

@@ -0,0 +1,2 @@
dnl GNU M4 treats -dV in a position-independent manner.
m4_debugmode(V)m4_traceon()dnl