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traces: show the stack after reading a token

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Currently, if we have long rules and series of shift, we stack states
without showing stack.  Let's be more incremental, and do how the Java
skeleton does.

* data/skeletons/lalr1.cc, data/skeletons/lalr1.d,
* data/skeletons/yacc.c:
Here.
Adjust test cases.
* tests/torture.at (AT_DATA_STACK_TORTURE): Disable stack traces: this
test produces a very large stack, and showing the stack each time we
shift a token goes quadatric.
This commit is contained in:
Akim Demaille
2020-02-04 07:44:00 +01:00
parent bba2f0a3a0
commit 37aeda6fb3
9 changed files with 45 additions and 4 deletions
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data/skeletons/lalr1.cc
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@@ -854,6 +854,7 @@ b4_dollar_popdef])[]dnl
`-----------------------------------------------*/
yynewstate:
YYCDEBUG << "Entering state " << int (yystack_[0].state) << '\n';
YY_STACK_PRINT ();
// Accept?
if (yystack_[0].state == yyfinal_)