Future/bison
1
0
Fork 0
mirror of https://git.savannah.gnu.org/git/bison.git synced 2026-03-17 00:03:03 +00:00
Code Issues Packages Projects Releases Wiki Activity

Implement %define lr.default_rules.

Browse Source 
Its value describes the states that are permitted to contain
default rules: "all", "consistent", or "accepting".
* src/reader.c (reader): Default lr.default_rules to "all".
Check for a valid lr.default_rules value.
* src/lalr.c (state_lookahead_tokens_count): If lr.default_rules
is "accepting", then only mark the accepting state as
consistent.
(initialize_LA): Tell state_lookahead_tokens_count whether
lr.default_rules is "accepting".
* src/tables.c (action_row): If lr.default_rules is not "all",
then disable default rules in inconsistent states.
* src/print.c (print_reductions): Use this opportunity to
perform some assertions about whether lr.default_rules was
obeyed correctly.
* tests/local.at (AT_TEST_TABLES_AND_PARSE): New macro that
helps with checking the parser tables for a grammar.
* tests/input.at (%define lr.default_rules invalid values): New
test group.
* tests/reduce.at (AT_TEST_LR_DEFAULT_RULES): New macro using
AT_TEST_TABLES_AND_PARSE.
(`no %define lr.default_rules'): New test group generated by
AT_TEST_LR_DEFAULT_RULES.
(`%define lr.default_rules "all"'): Likewise.
(`%define lr.default_rules "consistent"'): Likewise.
(`%define lr.default_rules "accepting"'): Likewise.
This commit is contained in:
Joel E. Denny
2009-04-20 00:55:50 -04:00
parent 44c124a389
commit 03c07b0394
8 changed files with 429 additions and 24 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
tests/input.at
View File

@@ -867,6 +867,24 @@ AT_BISON_CHECK([[Input.y]], [1], [],
AT_CLEANUP
## ----------------------------------------- ##
## %define lr.default_rules invalid values. ##
## ----------------------------------------- ##
AT_SETUP([[%define lr.default_rules invalid values]])
AT_DATA([[input.y]],
[[%define lr.default_rules "bogus"
%%
start: ;
]])
AT_BISON_CHECK([[input.y]], [[1]], [[]],
[[input.y:1.9-24: invalid value for %define variable `lr.default_rules': `bogus'
]])
AT_CLEANUP
## ------------------------ ##
## %define enum variables. ##
## ------------------------ ##