-*- Autoconf -*-
# Language-independent M4 Macros for Bison.
-# Copyright (C) 2002, 2004, 2005, 2006, 2007, 2008, 2009
-# Free Software Foundation, Inc.
+
+# Copyright (C) 2002, 2004-2011 Free Software Foundation, Inc.
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
STATE-NUM.]])
$1([defact], [b4_defact],
- [[YYDEFACT[S] -- default rule to reduce with in state S when YYTABLE
-does not specify something else to do. Zero means the default is an
-error.]])
+ [[YYDEFACT[S] -- default reduction number in state S. Performed when
+YYTABLE does not specify something else to do. Zero means the default
+is an error.]])
$1([pgoto], [b4_pgoto], [[YYPGOTO[NTERM-NUM].]])
$1([table], [b4_table],
[[YYTABLE[YYPACT[STATE-NUM]]. What to do in state STATE-NUM. If
positive, shift that token. If negative, reduce the rule which
-number is the opposite. If zero, do what YYDEFACT says.
-If YYTABLE_NINF, syntax error.]])
+number is the opposite. If YYTABLE_NINF, syntax error.]])
$1([check], [b4_check])
# Expand IF-TRUE, if FLAG is true, IF-FALSE otherwise.
b4_define_flag_if([defines]) # Whether headers are requested.
b4_define_flag_if([glr]) # Whether a GLR parser is requested.
-b4_define_flag_if([locations]) # Whether locations are tracked.
b4_define_flag_if([nondeterministic]) # Whether conflicts should be handled.
b4_define_flag_if([yacc]) # Whether POSIX Yacc is emulated.
# undefined. If FIELD = id, prepend the prefix.
m4_define([b4_symbol],
[m4_case([$2],
- [id], [m4_do([b4_percent_define_get([token.prefix])],
+ [id], [m4_do([b4_percent_define_get([api.tokens.prefix])],
[b4_symbol_([$1], [id])])],
[b4_symbol_($@)])])
# b4_check_user_names(WHAT, USER-LIST, BISON-NAMESPACE)
-# --------------------------------------------------------
-# Warn if any name of type WHAT is used by the user (as recorded in USER-LIST)
-# but is not used by Bison (as recorded by macros in the namespace
-# BISON-NAMESPACE).
+# -----------------------------------------------------
+# Complain if any name of type WHAT is used by the user (as recorded in
+# USER-LIST) but is not used by Bison (as recorded by macros in the
+# namespace BISON-NAMESPACE).
#
-# USER-LIST must expand to a list specifying all grammar occurrences of all
-# names of type WHAT. Each item in the list must be a triplet specifying one
+# USER-LIST must expand to a list specifying all user occurrences of all names
+# of type WHAT. Each item in the list must be a triplet specifying one
# occurrence: name, start boundary, and end boundary. Empty string names are
# fine. An empty list is fine.
#
m4_pushdef([b4_start], m4_car(m4_shift(b4_occurrence)))dnl
m4_pushdef([b4_end], m4_shift(m4_shift(b4_occurrence)))dnl
m4_ifndef($3[(]m4_quote(b4_user_name)[)],
- [b4_warn_at([b4_start], [b4_end],
- [[%s `%s' is not used]],
- [$1], [b4_user_name])])[]dnl
+ [b4_complain_at([b4_start], [b4_end],
+ [[%s `%s' is not used]],
+ [$1], [b4_user_name])])[]dnl
m4_popdef([b4_occurrence])dnl
m4_popdef([b4_user_name])dnl
m4_popdef([b4_start])dnl
m4_popdef([b4_end])dnl
])])
-# b4_percent_define_get(VARIABLE)
+
+
+## --------------------- ##
+## b4_percent_define_*. ##
+## --------------------- ##
+
+
+# b4_percent_define_use(VARIABLE)
# -------------------------------
-# Mimic muscle_percent_define_get in ../src/muscle_tab.h exactly. That is, if
-# the %define variable VARIABLE is defined, emit its value. Also, record
+# Declare that VARIABLE was used.
+m4_define([b4_percent_define_use],
+[m4_define([b4_percent_define_bison_variables(]$1[)])dnl
+])
+
+# b4_percent_define_get(VARIABLE, [DEFAULT])
+# ------------------------------------------
+# Mimic muscle_percent_define_get in ../src/muscle-tab.h. That is, if
+# the %define variable VARIABLE is defined, emit its value. Contrary
+# to its C counterpart, return DEFAULT otherwise. Also, record
# Bison's usage of VARIABLE by defining
# b4_percent_define_bison_variables(VARIABLE).
#
#
# b4_percent_define_get([[foo]])
m4_define([b4_percent_define_get],
-[m4_define([b4_percent_define_bison_variables(]$1[)])dnl
-m4_ifdef([b4_percent_define(]$1[)], [m4_indir([b4_percent_define(]$1[)])])])
+[b4_percent_define_use([$1])dnl
+m4_ifdef([b4_percent_define(]$1[)],
+ [m4_indir([b4_percent_define(]$1[)])],
+ [$2])])
# b4_percent_define_get_loc(VARIABLE)
# -----------------------------------
-# Mimic muscle_percent_define_get_loc in ../src/muscle_tab.h exactly. That is,
+# Mimic muscle_percent_define_get_loc in ../src/muscle-tab.h exactly. That is,
# if the %define variable VARIABLE is undefined, complain fatally since that's
# a Bison or skeleton error. Otherwise, return its definition location in a
# form approriate for the first two arguments of b4_warn_at, b4_complain_at, or
# b4_percent_define_get_syncline(VARIABLE)
# ----------------------------------------
-# Mimic muscle_percent_define_get_syncline in ../src/muscle_tab.h exactly.
+# Mimic muscle_percent_define_get_syncline in ../src/muscle-tab.h exactly.
# That is, if the %define variable VARIABLE is undefined, complain fatally
# since that's a Bison or skeleton error. Otherwise, return its definition
# location as a b4_syncline invocation. Don't record this as a Bison usage of
# b4_percent_define_ifdef(VARIABLE, IF-TRUE, [IF-FALSE])
# ------------------------------------------------------
-# Mimic muscle_percent_define_ifdef in ../src/muscle_tab.h exactly. That is,
+# Mimic muscle_percent_define_ifdef in ../src/muscle-tab.h exactly. That is,
# if the %define variable VARIABLE is defined, expand IF-TRUE, else expand
# IF-FALSE. Also, record Bison's usage of VARIABLE by defining
# b4_percent_define_bison_variables(VARIABLE).
# b4_percent_define_ifdef([[foo]], [[it's defined]], [[it's undefined]])
m4_define([b4_percent_define_ifdef],
[m4_ifdef([b4_percent_define(]$1[)],
- [m4_define([b4_percent_define_bison_variables(]$1[)])$2],
+ [b4_percent_define_use([$1])$2],
[$3])])
# b4_percent_define_flag_if(VARIABLE, IF-TRUE, [IF-FALSE])
# --------------------------------------------------------
-# Mimic muscle_percent_define_flag_if in ../src/muscle_tab.h exactly. That is,
+# Mimic muscle_percent_define_flag_if in ../src/muscle-tab.h exactly. That is,
# if the %define variable VARIABLE is defined to "" or "true", expand IF-TRUE.
# If it is defined to "false", expand IF-FALSE. Complain if it is undefined
# (a Bison or skeleton error since the default value should have been set
# b4_percent_define_default(VARIABLE, DEFAULT)
# --------------------------------------------
-# Mimic muscle_percent_define_default in ../src/muscle_tab.h exactly. That is,
+# Mimic muscle_percent_define_default in ../src/muscle-tab.h exactly. That is,
# if the %define variable VARIABLE is undefined, set its value to DEFAULT.
# Don't record this as a Bison usage of VARIABLE as there's no reason to
# suspect that the value has yet influenced the output.
# b4_percent_define_if_define(VARIABLE)
# -------------------------------------
# Define b4_VARIABLE_if that executes its $1 or $2 depending whether
-# VARIABLE was %defined.
+# VARIABLE was %defined. The characters `.' and `-' in VARIABLE are mapped
+# to `_'.
m4_define([b4_percent_define_if_define_],
-[m4_define([b4_$1_if], [b4_percent_define_flag_if([$1], [$2], [$3])])])
+[m4_define(m4_bpatsubst([b4_$1_if], [[-.]], [_]),
+ [b4_percent_define_flag_if([$1], [$2], [$3])])])
m4_define([b4_percent_define_if_define],
[b4_percent_define_default([[$1]], [[false]])
b4_percent_define_if_define_([$1], $[1], $[2])])
-# b4_assert_if([IF-ASSERTIONS-ARE-USED], [IF-NOT])
-# b4_debug_if([IF-DEBUG-TRACES-ARE-ENABLED], [IF-NOT])
-# b4_error_verbose_if([IF-ERRORS-ARE-VERBOSE], [IF-NOT])
-# b4_lex_symbol_if([IF-YYLEX-RETURNS-A-COMPLETE-SYMBOL], [IF-NOT])
-# b4_variant_if([IF-VARIANT-ARE-USED], [IF-NOT])
-# ----------------------------------------------
-b4_percent_define_if_define([assert])
-b4_percent_define_if_define([debug])
-b4_percent_define_if_define([error_verbose])
-b4_percent_define_if_define([lex_symbol])
-b4_percent_define_if_define([variant])
-
-
-
# b4_percent_define_check_values(VALUES)
# --------------------------------------
-# Mimic muscle_percent_define_check_values in ../src/muscle_tab.h exactly
+# Mimic muscle_percent_define_check_values in ../src/muscle-tab.h exactly
# except that the VALUES structure is more appropriate for M4. That is, VALUES
# is a list of sublists of strings. For each sublist, the first string is the
# name of a %define variable, and all remaining strings in that sublist are the
[b4_complain_at(b4_percent_define_get_loc([$1]),
[[invalid value for %%define variable `%s': `%s']],
[$1],
- m4_dquote(m4_indir([b4_percent_define(]$1[)])))])dnl
+ m4_dquote(m4_indir([b4_percent_define(]$1[)])))
+ m4_foreach([b4_value], m4_dquote(m4_shift($@)),
+ [b4_complain_at(b4_percent_define_get_loc([$1]),
+ [[accepted value: `%s']],
+ m4_dquote(b4_value))])])dnl
m4_popdef([b4_good_value])],
[b4_fatal([[undefined %%define variable `%s' passed to b4_percent_define_check_values]], [$1])])])
[$3])])
+## ------------------ ##
+## Common variables. ##
+## ------------------ ##
+
# Default values for %define.
# ---------------------------
-# If the %token.prefix, it is empty.
-m4_percent_define_default([[token.prefix]], [[]])
+# If the api.tokens.prefix, it is empty.
+m4_percent_define_default([[api.tokens.prefix]], [[]])
+
+# b4_parse_assert_if([IF-ASSERTIONS-ARE-USED], [IF-NOT])
+# b4_parse_trace_if([IF-DEBUG-TRACES-ARE-ENABLED], [IF-NOT])
+# b4_lex_symbol_if([IF-YYLEX-RETURNS-A-COMPLETE-SYMBOL], [IF-NOT])
+# b4_variant_if([IF-VARIANT-ARE-USED], [IF-NOT])
+# ----------------------------------------------
+b4_percent_define_if_define([lex_symbol])
+b4_percent_define_if_define([locations]) # Whether locations are tracked.
+b4_percent_define_if_define([parse.assert])
+b4_percent_define_if_define([parse.trace])
+b4_percent_define_if_define([variant])
+
+# b4_error_verbose_if([IF-ERRORS-ARE-VERBOSE], [IF-NOT])
+# ------------------------------------------------------
+# Map %define parse.error "(simple|verbose)" to b4_error_verbose_if and
+# b4_error_verbose_flag.
+b4_percent_define_default([[parse.error]], [[simple]])
+b4_percent_define_check_values([[[[parse.error]],
+ [[simple]], [[verbose]]]])
+m4_define([b4_error_verbose_flag],
+ [m4_case(b4_percent_define_get([[parse.error]]),
+ [simple], [[0]],
+ [verbose], [[1]])])
+b4_define_flag_if([error_verbose])
## ----------------------------------------------------------- ##
projects / bison.git / blobdiff