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https://git.savannah.gnu.org/git/bison.git
synced 2026-04-25 02:59:38 +00:00
Akim Demaille
744171ddbf
Currently pstate_new does not set up its variables, this task is left to yypush_parse. This was probably to share more code with usual pull parsers, where these (local) variables are indeed initialized by yyparse. But as a consequence yyexpected_tokens crashes at the very beginning of the parse, since, for instance, the stacks are not even set up. See https://lists.gnu.org/r/bison-patches/2020-03/msg00001.html. The fix could have very simple, but the documentation actually makes it very clear that we can reuse a pstate for several parses: After yypush_parse returns a status other than YYPUSH_MORE, the parser instance yyps may be reused for a new parse. so we need to restore the parser to its pristine state so that (i) it is ready to run the next parse, (ii) it properly supports yyexpected_tokens for the next run. * data/skeletons/yacc.c (b4_initialize_parser_state_variables): New, extracted from the top of yyparse/yypush_parse. (yypstate_clear): New. (yypstate_new): Use it when push parsers are enabled. Define after the yyps macros so that we can use the same code as the regular pull parsers. (yyparse): Use it when push parsers are _not_ enabled. * examples/c/bistromathic/bistromathic.test: Check the completion on the beginning of the line.
115 lines
2.3 KiB
Bash
Executable File
115 lines
2.3 KiB
Bash
Executable File
#! /bin/sh
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# Copyright (C) 2020 Free Software Foundation, Inc.
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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cat >input <<EOF
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1+2*3
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EOF
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run 0 '> 1+2*3
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7
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> '
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cat >input <<EOF
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(1+2) * 3
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EOF
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run 0 '> (1+2) * 3
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9
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> '
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run -noerr 0 '> (1+2) * 3
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9
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> ' -p
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cat >input <<EOF
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a = 256
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sqrt (a)
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EOF
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run 0 '> a = 256
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256
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> sqrt (a)
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16
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> '
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cat >input <<EOF
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a = .16
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b = 10 ^ 2
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sqrt (a * b)
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EOF
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run 0 '> a = .16
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0.16
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> b = 10 ^ 2
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100
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> sqrt (a * b)
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4
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> '
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cat >input <<EOF
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*
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EOF
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run 0 '> *
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> err: 1.1: syntax error: expected end of file or - or ( or exit or double precision number or function or variable before *'
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cat >input <<EOF
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1 + 2 * * 3
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EOF
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run 0 '> 1 + 2 * * 3
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> err: 1.9: syntax error: expected - or ( or double precision number or function or variable before *'
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cat >input <<EOF
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100%
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EOF
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run 0 '> 100%
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100
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> err: 1.4: error: invalid character'
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cat >input <<EOF
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1 / 0
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EOF
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run 0 '> 1 / 0
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> err: 1.1-5: error: division by zero'
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## ------------ ##
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## Completion. ##
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## ------------ ##
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# Check completion after an operator.
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sed -e 's/\\t/ /g' >input <<EOF
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(1+\t\t
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EOF
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run 0 '> (1+
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( cos ln
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- double precision number sin
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atan exp sqrt
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> (1+
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> err: 1.4: syntax error: expected - or ( or double precision number or function or variable before end of file'
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# Check the completion of a word.
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sed -e 's/\\t/ /g' >input <<EOF
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(at\t\t
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EOF
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run 0 '> (atan ( ''
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> err: 1.9: syntax error: expected - or ( or double precision number or function or variable before end of file'
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# Check the completion at the very beginning.
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sed -e 's/\\t/ /g' >input <<EOF
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e\t\t
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EOF
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run 0 '> e
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end of file exit exp ''
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> e
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0
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> err: '
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