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* data/glr.c (YYLLOC_DEFAULT): Parenthesize arguments as needed,

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and return properly parenthesized result.
* data/lalar1.cc (YYLLOC_DEFAULT): Likewise.
* data/yacc.c (YYLLOC_DEFAULT): Likewise.
Remove unnecessary parentheses from uses.
* doc/bison.texinfo (Location Default Action): Describe the
conventions for parentheses.
This commit is contained in:
Paul Eggert
2003-06-20 22:52:12 +00:00
parent 81fd08cad0
commit 0ae99356d5
5 changed files with 39 additions and 23 deletions
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26
doc/bison.texinfo
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@@ -3210,11 +3210,11 @@ By default, @code{YYLLOC_DEFAULT} is defined this way for simple
@example
@group
#define YYLLOC_DEFAULT(Current, Rhs, N) \
Current.first_line = Rhs[1].first_line; \
Current.first_column = Rhs[1].first_column; \
Current.last_line = Rhs[N].last_line; \
Current.last_column = Rhs[N].last_column;
# define YYLLOC_DEFAULT(Current, Rhs, N) \
((Current).first_line = (Rhs)[1].first_line, \
(Current).first_column = (Rhs)[1].first_column, \
(Current).last_line = (Rhs)[N].last_line, \
(Current).last_column = (Rhs)[N].last_column)
@end group
@end example
@@ -3223,11 +3223,11 @@ and like this for @acronym{GLR} parsers:
@example
@group
#define YYLLOC_DEFAULT(Current, Rhs, N) \
Current.first_line = YYRHSLOC(Rhs,1).first_line; \
Current.first_column = YYRHSLOC(Rhs,1).first_column; \
Current.last_line = YYRHSLOC(Rhs,N).last_line; \
Current.last_column = YYRHSLOC(Rhs,N).last_column;
# define YYLLOC_DEFAULT(yyCurrent, yyRhs, YYN) \
((yyCurrent).first_line = YYRHSLOC(yyRhs, 1).first_line, \
(yyCurrent).first_column = YYRHSLOC(yyRhs, 1).first_column, \
(yyCurrent).last_line = YYRHSLOC(yyRhs, YYN).last_line, \
(yyCurrent).last_column = YYRHSLOC(yyRhs, YYN).last_column)
@end group
@end example
@@ -3241,6 +3241,12 @@ result) should be modified by @code{YYLLOC_DEFAULT}.
@item
For consistency with semantic actions, valid indexes for the location
array range from 1 to @var{n}.
@item
Your macro should parenthesize its arguments, if need be, since the
actual arguments may not be surrounded by parentheses. Also, your
macro should expand to something that can be used as a single
statement when it is followed by a semicolon.
@end itemize
@node Declarations