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[PATCH 1/9] muscle: check the kind of api.prefix, api.location.type

From: Akim Demaille
Subject: [PATCH 1/9] muscle: check the kind of api.prefix, api.location.type
Date: Thu, 18 Apr 2013 17:28:00 +0200

* data/bison.m4: Check api.prefix.
* data/c++.m4: Check api.location.type.
* doc/bison.texi: Fix uses of api.value.type, api.prefix, api.location.type.
Document {...} values for %define.
* src/parse-gram.y: Fix use of api.prefix.
* tests/ Fix uses of api.location.type.
* tests/ Check api.prefix, and api.location.type.
 data/bison.m4    |  1 +
 data/c++.m4      |  1 +
 doc/bison.texi   | 27 ++++++++++++++-------------
 src/parse-gram.y |  2 +-
 tests/    |  4 ++--
 tests/   | 14 +++++++++-----
 6 files changed, 28 insertions(+), 21 deletions(-)

diff --git a/data/bison.m4 b/data/bison.m4
index fc33d56..64f1bac 100644
--- a/data/bison.m4
+++ b/data/bison.m4
@@ -1027,6 +1027,7 @@ m4_define_default([b4_location_initial_line],   [1])
 ## --------------- ##
 # api.prefix >< %name-prefix.
+b4_percent_define_check_kind([api.prefix], [code], [deprecated])
diff --git a/data/c++.m4 b/data/c++.m4
index 2d686b6..7a74380 100644
--- a/data/c++.m4
+++ b/data/c++.m4
@@ -29,6 +29,7 @@ m4_define([b4_comment],
 ## Checks.  ##
 ## -------- ##
+b4_percent_define_check_kind([api.location.type], [code], [deprecated])
 b4_percent_define_check_kind([api.namespace], [code], [deprecated])
 ## ---------------- ##
diff --git a/doc/bison.texi b/doc/bison.texi
index bb6465f..bd03ee1 100644
--- a/doc/bison.texi
+++ b/doc/bison.texi
@@ -2160,7 +2160,7 @@ the same as the declarations for the infix notation 
 /* Bison declarations.  */
-%define api.value.type int
+%define api.value.type @address@hidden
 %token NUM
 %left '-' '+'
@@ -3885,7 +3885,7 @@ and then your grammar can use the following instead of 
 #include "parser.h"
-%define api.value.type "union YYSTYPE"
+%define api.value.type @{union address@hidden
 %type <val> expr
 %token <tptr> ID
 @end group
@@ -5450,6 +5450,7 @@ parse.trace}.
 @deffn {Directive} %define @var{variable}
 @deffnx {Directive} %define @var{variable} @var{value}
address@hidden {Directive} %define @var{variable} @address@hidden@}
 @deffnx {Directive} %define @var{variable} "@var{value}"
 Define a variable to adjust Bison's behavior.  @xref{%define Summary}.
 @end deffn
@@ -5499,7 +5500,7 @@ preprocessor guard: @address@hidden@var{FILE}_INCLUDED}, 
 uppercase, with each series of non alphanumerical characters converted to a
 single underscore.
-For instance with @samp{%define api.prefix "calc"} and @samp{%defines
+For instance with @samp{%define api.prefix @address@hidden and @samp{%defines
 "lib/parse.h"}, the header will be guarded as follows.
@@ -5661,17 +5662,17 @@ features are associated with variables, which are 
assigned by the
 @deffn {Directive} %define @var{variable}
 @deffnx {Directive} %define @var{variable} @var{value}
address@hidden {Directive} %define @var{variable} @address@hidden@}
 @deffnx {Directive} %define @var{variable} "@var{value}"
 Define @var{variable} to @var{value}.
address@hidden must be placed in quotation marks if it contains any
-character other than a letter, underscore, period, or non-initial dash
-or digit.  Omitting @code{"@var{value}"} entirely is always equivalent
-to specifying @code{""}.
+The type of the values depend on the syntax.  Braces denote value in the
+target language (e.g., a namespace, a type, etc.).  Keyword values (no
+delimiters) denote finite choice (e.g., a variation of a feature).  String
+values denote remaining cases (e.g., a file name).
-It is an error if a @var{variable} is defined by @code{%define}
-multiple times, but see @ref{Bison Options,,-D
+It is an error if a @var{variable} is defined by @code{%define} multiple
+times, but see @ref{Bison Options,,-D @address@hidden
 @end deffn
 The rest of this section summarizes variables and values that
@@ -5753,7 +5754,7 @@ The parser namespace is @code{foo} and @code{yylex} is 
referenced as
 @c api.namespace
 @c ================================================== api.location.type
address@hidden {Directive} {%define api.location.type} @var{type}
address@hidden {Directive} {%define api.location.type} @address@hidden@}
 @itemize @bullet
 @item Language(s): C++, Java
@@ -5772,7 +5773,7 @@ Introduced in Bison 2.7 for C, C++ and Java.  Introduced 
under the name
 @end deffn
 @c ================================================== api.prefix
address@hidden {Directive} {%define api.prefix} @var{prefix}
address@hidden {Directive} {%define api.prefix} @address@hidden@}
 @itemize @bullet
 @item Language(s): All
@@ -5789,7 +5790,7 @@ Introduced in Bison 2.7 for C, C++ and Java.  Introduced 
under the name
 @end deffn
 @c ================================================== api.pure
address@hidden Directive {%define api.pure}
address@hidden Directive {%define api.pure} @var{purity}
 @itemize @bullet
 @item Language(s): C
diff --git a/src/parse-gram.y b/src/parse-gram.y
index ebcd31b..355e148 100644
--- a/src/parse-gram.y
+++ b/src/parse-gram.y
@@ -82,7 +82,7 @@ static char const *char_name (char);
   #define YYTYPE_UINT8 uint_fast8_t
-%define api.prefix "gram_"
+%define api.prefix {gram_}
 %define api.pure full
 %define locations
 %define parse.error verbose
diff --git a/tests/ b/tests/
index 00741f8..3207e69 100644
--- a/tests/
+++ b/tests/
@@ -677,7 +677,7 @@ m4_define([AT_CHECK_CALC_LALR1_CC],
-AT_CHECK_CALC_LALR1_CC([%locations %define api.location.type Span])
+AT_CHECK_CALC_LALR1_CC([%locations %define api.location.type {Span}])
 AT_CHECK_CALC_LALR1_CC([%defines %locations %define parse.error verbose 
%name-prefix "calc" %verbose %yacc])
 AT_CHECK_CALC_LALR1_CC([%locations %define parse.error verbose %define 
api.prefix "calc" %verbose %yacc])
@@ -711,7 +711,7 @@ m4_define([AT_CHECK_CALC_GLR_CC],
-AT_CHECK_CALC_GLR_CC([%locations %define api.location.type Span])
+AT_CHECK_CALC_GLR_CC([%locations %define api.location.type {Span}])
 AT_CHECK_CALC_GLR_CC([%defines %define parse.error verbose %name-prefix "calc" 
%verbose %yacc])
 AT_CHECK_CALC_GLR_CC([%define parse.error verbose %define api.prefix "calc" 
%verbose %yacc])
diff --git a/tests/ b/tests/
index a1bd03a..7d4f073 100644
--- a/tests/
+++ b/tests/
@@ -1442,17 +1442,21 @@ AT_SETUP([["%define" code variables]])
-[[%skeleton ""
-%define api.namespace    ]$1[quux]$2[
-%define api.token.prefix ]$1[quux]$2[
+[[%skeleton "" %locations
+%define api.location.type ]$1[quux]$2[
+%define api.namespace     ]$1[quux]$2[
+%define api.prefix        ]$1[quux]$2[
+%define api.token.prefix  ]$1[quux]$2[
 %token TOK // Otherwise api.token.prefix is unused.
 start: TOK;
 AT_BISON_CHECK([[input.yy]], [0], [],
-[[input.yy:3.9-24: warning: %define variable 'api.token.prefix' requires 
'{...}' values [-Wdeprecated]
-input.yy:2.9-21: warning: %define variable 'api.namespace' requires '{...}' 
values [-Wdeprecated]
+[[input.yy:4.9-18: warning: %define variable 'api.prefix' requires '{...}' 
values [-Wdeprecated]
+input.yy:5.9-24: warning: %define variable 'api.token.prefix' requires '{...}' 
values [-Wdeprecated]
+input.yy:2.9-25: warning: %define variable 'api.location.type' requires 
'{...}' values [-Wdeprecated]
+input.yy:3.9-21: warning: %define variable 'api.namespace' requires '{...}' 
values [-Wdeprecated]

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