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Remove quotes from variables names in %define directives and from

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qualifiers in %code directives, and restrict the characters that are
allowed in them to M4-friendly ones.  For %define, continue to support
the quoted form as a deprecated feature.  Discussed starting at
<http://lists.gnu.org/archive/html/bison-patches/2007-01/msg00023.html>.
* NEWS (2.3a+): Add entry for the change to %define.  Update entry for
%code.
* doc/bison.texinfo (Prologue Alternatives): Update.
(Bison Declaration Summary): In %defines entry, update mention of
`%code requires' and `%code provides'.
(C++ Location Values): Update %define uses.
(Calc++ Parser Interface): Likewise.
(Calc++ Parser): Likewise, and update `%code requires' uses.
(Bison Symbols): Update %code documentation.
* src/parse-gram.y (prologue_declaration): For %define variables, use
`variable' instead of `STRING'.
(grammar_declaration): For %code qualifiers, use `ID' instead of
`STRING'.
(variable): New nonterminal that takes an `ID' or a `STRING'.
* tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Update %code
and %define uses.
* tests/calc.at (_AT_DATA_CALC_Y): Update %define use.
* tests/input.at (Reject unused %code qualifiers): Update %code uses.
(%define errors): Update %define uses.
This commit is contained in:
Joel E. Denny
2007-01-09 01:17:51 +00:00
parent e9813cd4f8
commit 16dc6a9ebf
8 changed files with 401 additions and 356 deletions
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15
NEWS
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@@ -16,23 +16,28 @@ Changes in version 2.3a+ (????-??-??):
%defines "parser.h"
* The `=' that used to be required in the following declarations is now
* The `=' that used to be required in the following directives is now
deprecated:
%file-prefix "parser"
%name-prefix "c_"
%output "parser.c"
* The quotes around NAME that used to be required in the following directive
are now deprecated:
%define NAME "VALUE"
* Bison 2.3a provided a new set of directives as a more flexible alternative to
the traditional Yacc prologue blocks. Those have now been consolidated into
a single %code directive with an optional qualifier field, which identifies
the purpose of the code and thus the location(s) where Bison should generate
it:
1. `%code {CODE}' replaces `%after-header {CODE}'
2. `%code "requires" {CODE}' replaces `%start-header {CODE}'
3. `%code "provides" {CODE}' replaces `%end-header {CODE}'
4. `%code "top" {CODE}' replaces `%before-header {CODE}'
1. `%code {CODE}' replaces `%after-header {CODE}'
2. `%code requires {CODE}' replaces `%start-header {CODE}'
3. `%code provides {CODE}' replaces `%end-header {CODE}'
4. `%code top {CODE}' replaces `%before-header {CODE}'
See the %code entries in `Appendix A Bison Symbols' in the Bison manual for a
summary of the new functionality. See the new section `Prologue