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In Bison 1.875's yacc.c, YYLLOC_DEFAULT was called regardless

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whether the reducion was empty or not.  This leaves room to
improve the use of YYLLOC_DEFAULT in such a case.
lalr1.cc is still experimental, so changing this is acceptable.
And finally, there are probably not many users who changed the
handling of locations in GLR, so changing is admissible too.
* data/glr.c, data/lalr1.cc, data/yacc.c (YYLLOC_DEFAULT): On an
empty reduction, set @$ to an empty location ending the previously
stacked symbol.
Adjust uses to make sure the code is triggered on empty
reductions.
* tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Adjust the
expected output: empty reductions have empty locations.
This commit is contained in:
Akim Demaille
2004-10-05 08:39:17 +00:00
parent f85a5e6f4b
commit b4a2033855
5 changed files with 85 additions and 48 deletions
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12
tests/actions.at
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@@ -372,8 +372,8 @@ thing (1@10-19): 'x' (1@10-19)
sending: ')' (2@20-29)
line (0@0-29): '(' (0@0-9) thing (1@10-19) ')' (2@20-29)
sending: EOF (3@30-39)
input (0@0-29): /* Nothing */
input (2@0-29): line (0@0-29) input (0@0-29)
input (0@29-29): /* Nothing */
input (2@0-29): line (0@0-29) input (0@29-29)
Successful parse.
]])
@@ -390,8 +390,8 @@ Freeing token 'y' (1@10-19)
sending: ')' (2@20-29)
line (-1@0-29): '(' (0@0-9) error (@10-19) ')' (2@20-29)
sending: EOF (3@30-39)
input (0@0-29): /* Nothing */
input (2@0-29): line (-1@0-29) input (0@0-29)
input (0@29-29): /* Nothing */
input (2@0-29): line (-1@0-29) input (0@29-29)
Successful parse.
]])
@@ -438,8 +438,8 @@ thing (11@110-119): 'x' (11@110-119)
sending: ')' (12@120-129)
line (10@100-129): '(' (10@100-109) thing (11@110-119) ')' (12@120-129)
sending: 'y' (13@130-139)
input (0@100-129): /* Nothing */
input (2@100-129): line (10@100-129) input (0@100-129)
input (0@129-129): /* Nothing */
input (2@100-129): line (10@100-129) input (0@129-129)
input (2@70-129): line (7@70-99) input (2@100-129)
input (2@0-129): line (-1@0-69) input (2@70-129)
130-139: syntax error, unexpected 'y', expecting $end