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f499b06243
* src/reader.c (symbol_list): `guard' and `guard_line' are new members. (symbol_list_new): Adjust. (copy_action): action_line is the first line, not the last. (copy_guard): Just as for actions, store the `action' only, not the switch/case/break flesh. Don't parse the user action that might follow the guard, let... (readgram): do it, i.e., now, there can be an action after a guard. In other words the guard is just explicitly optional. (packgram): Adjust. * src/output.c (guards_output): New. (output_parser): Call it when needed. (output): Also free the guard and attrs obstacks. * src/files.c, src/files.h (obstack_save): Remove. (output_files): Remove. As a result, if one needs the former `.act' file, using an appropriate skeleton which requires actions and guards is now required. * src/main.c (main): Adjust. * tests/semantic.at: New. * tests/regression.at: Use `input.y' as input file name. Avoid 8+3 problems by requiring input.c when the test needs the parser.
48 lines
1.3 KiB
Plaintext
48 lines
1.3 KiB
Plaintext
# Bison Semantic Parsers. -*- Autotest -*-
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# Copyright 2001 Free Software Foundation, Inc.
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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 2, or (at your option)
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# any later version.
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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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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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# 02111-1307, USA.
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AT_BANNER([[Semantic Parsers.]])
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# Well, nothing, or almost, is known about semantic parsers. For the
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# time being, just make sure we still parse them properly.
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## ---------------- ##
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## Parsing Guards. ##
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## ---------------- ##
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AT_SETUP([Parsing Guards])
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AT_DATA([input.y],
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[[%semantic-parser
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%union {
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int ival;
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}
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%token <ival> INT
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%type <ival> exp
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%%
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exp: exp '+' exp { $$ = $1 + $3 }
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| exp '/' exp %guard { if ($3 == 0) yyerror = 1 } { $$ = $1 / $3 }
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| INT
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%%
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]])
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AT_CHECK([bison -v input.y -o input.c], 0, ignore, ignore)
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AT_CLEANUP
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