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--update: when used, do not generate the output files

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It is inconvenient that we also generate the output files when we
update the grammar file, and it's somewhat unexpected.  Let's not do
that.

* src/main.c (main): Skip generation when --update is passed.
* src/getargs.c (usage): Update the help message.
* doc/bison.texi (Bison Options): Likewise.
* tests/input.at: Check that we don't generate the output.
This commit is contained in:
Akim Demaille
2019-01-21 19:37:10 +01:00
parent 36cae8e752
commit 5ec9c99662
4 changed files with 42 additions and 31 deletions
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11
tests/input.at
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@@ -2500,7 +2500,7 @@ AT_DATA_GRAMMAR([[input.y]],
%no-default_prec
%no_default-prec
%no_lines
%output = "foo"
%output = "output.c"
%pure_parser
%token_table
%error-verbose
@@ -2559,7 +2559,9 @@ AT_BISON_CHECK([[-ffixit input.y]], [], [], [experr])
AT_CHECK([[sed -e '/^fix-it:/d' errors-all >experr]])
AT_BISON_CHECK([[input.y]], [], [], [experr])
# Update the input file.
# Update the input file. Make sure we generated nothing.
AT_CHECK([rm -f output.c])
AT_CHECK([cp input.y input.y.orig])
AT_CHECK([sed -e '/fix-it/d' <errors-all >experr])
AT_CHECK([echo "bison: file 'input.y' was updated (backup: 'input.y~')" >>experr])
@@ -2568,6 +2570,9 @@ AT_BISON_CHECK([[--update input.y]], [], [[]], [experr])
# Check the backup.
AT_CHECK([diff input.y.orig input.y~])
# Check we did not generate any file.
AT_CHECK([test ! -f output.c])
# Check the update.
AT_CHECK([cat input.y], [],
[[%code top {
@@ -2588,7 +2593,7 @@ AT_CHECK([cat input.y], [],
%no-default-prec
%no-default-prec
%no-lines
%output "foo"
%output "output.c"
%pure-parser
%token-table
%glr-parser