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Diffstat (limited to 'gnuwin32/share/bison/bison.m4')
| -rw-r--r-- | gnuwin32/share/bison/bison.m4 | 556 |
1 files changed, 0 insertions, 556 deletions
diff --git a/gnuwin32/share/bison/bison.m4 b/gnuwin32/share/bison/bison.m4 deleted file mode 100644 index bad62963..00000000 --- a/gnuwin32/share/bison/bison.m4 +++ /dev/null @@ -1,556 +0,0 @@ - -*- Autoconf -*- - -# Language-independent M4 Macros for Bison. -# Copyright (C) 2002, 2004, 2005, 2006, 2007, 2008 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 -# the Free Software Foundation, either version 3 of the License, or -# (at your option) any later version. -# -# This program is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program. If not, see <http://www.gnu.org/licenses/>. - - -## ---------------- ## -## Identification. ## -## ---------------- ## - -# b4_copyright(TITLE, YEARS) -# -------------------------- -m4_define([b4_copyright], -[b4_comment([A Bison parser, made by GNU Bison b4_version.]) - -b4_comment([$1 - -m4_text_wrap([Copyright (C) $2 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 -the Free Software Foundation, either version 3 of the License, or -(at your option) any later version. - -This program is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with this program. If not, see <http://www.gnu.org/licenses/>.]) - -b4_comment([As a special exception, you may create a larger work that contains -part or all of the Bison parser skeleton and distribute that work -under terms of your choice, so long as that work isn't itself a -parser generator using the skeleton or a modified version thereof -as a parser skeleton. Alternatively, if you modify or redistribute -the parser skeleton itself, you may (at your option) remove this -special exception, which will cause the skeleton and the resulting -Bison output files to be licensed under the GNU General Public -License without this special exception. - -This special exception was added by the Free Software Foundation in -version 2.2 of Bison.])]) - - -## ---------------- ## -## Error handling. ## -## ---------------- ## - -# The following error handling macros print error directives that should not -# become arguments of other macro invocations since they would likely then be -# mangled. Thus, they print to stdout directly. - -# b4_cat(TEXT) -# ------------ -# Write TEXT to stdout. Precede the final newline with an @ so that it's -# escaped. For example: -# -# b4_cat([[@complain(invalid input@)]]) -m4_define([b4_cat], -[m4_syscmd([cat <<'_m4eof' -]m4_bpatsubst(m4_dquote($1), [_m4eof], [_m4@`eof])[@ -_m4eof -])dnl -m4_if(m4_sysval, [0], [], [m4_fatal([$0: cannot write to stdout])])]) - -# b4_error(KIND, FORMAT, [ARG1], [ARG2], ...) -# ------------------------------------------- -# Write @KIND(FORMAT@,ARG1@,ARG2@,...@) to stdout. -# -# For example: -# -# b4_error([[warn]], [[invalid value for `%s': %s]], [[foo]], [[3]]) -m4_define([b4_error], -[b4_cat([[@]$1[(]$2[]]dnl -[m4_if([$#], [2], [], - [m4_foreach([b4_arg], - m4_dquote(m4_shift(m4_shift($@))), - [[@,]b4_arg])])[@)]])]) - -# b4_error_at(KIND, START, END, FORMAT, [ARG1], [ARG2], ...) -# ---------------------------------------------------------- -# Write @KIND_at(START@,END@,FORMAT@,ARG1@,ARG2@,...@) to stdout. -# -# For example: -# -# b4_error_at([[complain]], [[input.y:2.3]], [[input.y:5.4]], -# [[invalid %s]], [[foo]]) -m4_define([b4_error_at], -[b4_cat([[@]$1[_at(]$2[@,]$3[@,]$4[]]dnl -[m4_if([$#], [4], [], - [m4_foreach([b4_arg], - m4_dquote(m4_shift(m4_shift(m4_shift(m4_shift($@))))), - [[@,]b4_arg])])[@)]])]) - -# b4_warn(FORMAT, [ARG1], [ARG2], ...) -# ------------------------------------ -# Write @warn(FORMAT@,ARG1@,ARG2@,...@) to stdout. -# -# For example: -# -# b4_warn([[invalid value for `%s': %s]], [[foo]], [[3]]) -# -# As a simple test suite, this: -# -# m4_divert(-1) -# m4_define([asdf], [ASDF]) -# m4_define([fsa], [FSA]) -# m4_define([fdsa], [FDSA]) -# b4_warn([[[asdf), asdf]]], [[[fsa), fsa]]], [[[fdsa), fdsa]]]) -# b4_warn([[asdf), asdf]], [[fsa), fsa]], [[fdsa), fdsa]]) -# b4_warn() -# b4_warn(1) -# b4_warn(1, 2) -# -# Should produce this without newlines: -# -# @warn([asdf), asdf]@,[fsa), fsa]@,[fdsa), fdsa]@) -# @warn(asdf), asdf@,fsa), fsa@,fdsa), fdsa@) -# @warn(@) -# @warn(1@) -# @warn(1@,2@) -m4_define([b4_warn], -[b4_error([[warn]], $@)]) - -# b4_warn_at(START, END, FORMAT, [ARG1], [ARG2], ...) -# --------------------------------------------------- -# Write @warn(START@,END@,FORMAT@,ARG1@,ARG2@,...@) to stdout. -# -# For example: -# -# b4_warn_at([[input.y:2.3]], [[input.y:5.4]], [[invalid %s]], [[foo]]) -m4_define([b4_warn_at], -[b4_error_at([[warn]], $@)]) - -# b4_complain(FORMAT, [ARG1], [ARG2], ...) -# ---------------------------------------- -# Write @complain(FORMAT@,ARG1@,ARG2@,...@) to stdout. -# -# See b4_warn example. -m4_define([b4_complain], -[b4_error([[complain]], $@)]) - -# b4_complain_at(START, END, FORMAT, [ARG1], [ARG2], ...) -# ------------------------------------------------------- -# Write @complain(START@,END@,FORMAT@,ARG1@,ARG2@,...@) to stdout. -# -# See b4_warn_at example. -m4_define([b4_complain_at], -[b4_error_at([[complain]], $@)]) - -# b4_fatal(FORMAT, [ARG1], [ARG2], ...) -# ------------------------------------- -# Write @fatal(FORMAT@,ARG1@,ARG2@,...@) to stdout and exit. -# -# See b4_warn example. -m4_define([b4_fatal], -[b4_error([[fatal]], $@)dnl -m4_exit(1)]) - -# b4_fatal_at(START, END, FORMAT, [ARG1], [ARG2], ...) -# ---------------------------------------------------- -# Write @fatal(START@,END@,FORMAT@,ARG1@,ARG2@,...@) to stdout and exit. -# -# See b4_warn_at example. -m4_define([b4_fatal_at], -[b4_error_at([[fatal]], $@)dnl -m4_exit(1)]) - - -## ---------------- ## -## Default values. ## -## ---------------- ## - -# m4_define_default([b4_lex_param], []) dnl breaks other skeletons -m4_define_default([b4_pre_prologue], []) -m4_define_default([b4_post_prologue], []) -m4_define_default([b4_epilogue], []) -m4_define_default([b4_parse_param], []) - -# The initial column and line. -m4_define_default([b4_location_initial_column], [1]) -m4_define_default([b4_location_initial_line], [1]) - - -## ------------ ## -## Data Types. ## -## ------------ ## - -# b4_ints_in(INT1, INT2, LOW, HIGH) -# --------------------------------- -# Return 1 iff both INT1 and INT2 are in [LOW, HIGH], 0 otherwise. -m4_define([b4_ints_in], -[m4_eval([$3 <= $1 && $1 <= $4 && $3 <= $2 && $2 <= $4])]) - - - -## ------------------ ## -## Decoding options. ## -## ------------------ ## - -# b4_flag_if(FLAG, IF-TRUE, IF-FALSE) -# ----------------------------------- -# Run IF-TRUE if b4_FLAG_flag is 1, IF-FALSE if FLAG is 0, otherwise fail. -m4_define([b4_flag_if], -[m4_case(b4_$1_flag, - [0], [$3], - [1], [$2], - [m4_fatal([invalid $1 value: ]$1)])]) - - -# b4_define_flag_if(FLAG) -# ----------------------- -# Define "b4_FLAG_if(IF-TRUE, IF-FALSE)" that depends on the -# value of the Boolean FLAG. -m4_define([b4_define_flag_if], -[_b4_define_flag_if($[1], $[2], [$1])]) - -# _b4_define_flag_if($1, $2, FLAG) -# -------------------------------- -# This macro works around the impossibility to define macros -# inside macros, because issuing `[$1]' is not possible in M4 :(. -# This sucks hard, GNU M4 should really provide M5 like $$1. -m4_define([_b4_define_flag_if], -[m4_if([$1$2], $[1]$[2], [], - [m4_fatal([$0: Invalid arguments: $@])])dnl -m4_define([b4_$3_if], - [b4_flag_if([$3], [$1], [$2])])]) - - -# b4_FLAG_if(IF-TRUE, IF-FALSE) -# ----------------------------- -# Expand IF-TRUE, if FLAG is true, IF-FALSE otherwise. -b4_define_flag_if([defines]) # Whether headers are requested. -b4_define_flag_if([error_verbose]) # Whether error are verbose. -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. - - -## ------------------------- ## -## Assigning token numbers. ## -## ------------------------- ## - - -## ----------- ## -## Synclines. ## -## ----------- ## - -# b4_basename(NAME) -# ----------------- -# Similar to POSIX basename; the differences don't matter here. -# Beware that NAME is not evaluated. -m4_define([b4_basename], -[m4_bpatsubst([$1], [^.*/\([^/]+\)/*$], [\1])]) - - -# b4_syncline(LINE, FILE) -# ----------------------- -m4_define([b4_syncline], -[b4_flag_if([synclines], [ -b4_sync_end([__line__], [b4_basename(m4_quote(__file__))]) -b4_sync_start([$1], [$2])])]) - -m4_define([b4_sync_end], [b4_comment([Line $1 of $2])]) -m4_define([b4_sync_start], [b4_comment([Line $1 of $2])]) - -# b4_user_code(USER-CODE) -# ----------------------- -# Emit code from the user, ending it with synclines. -m4_define([b4_user_code], -[$1 -b4_syncline([@oline@], [@ofile@])]) - - -# b4_define_user_code(MACRO) -# -------------------------- -# From b4_MACRO, build b4_user_MACRO that includes the synclines. -m4_define([b4_define_user_code], -[m4_define([b4_user_$1], -[b4_user_code([b4_$1])])]) - - -# b4_user_actions -# b4_user_initial_action -# b4_user_post_prologue -# b4_user_pre_prologue -# b4_user_stype -# ---------------------- -# Macros that issue user code, ending with synclines. -b4_define_user_code([actions]) -b4_define_user_code([initial_action]) -b4_define_user_code([post_prologue]) -b4_define_user_code([pre_prologue]) -b4_define_user_code([stype]) - - -# 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). -# -# 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 -# occurrence: name, start boundary, and end boundary. Empty string names are -# fine. An empty list is fine. -# -# For example, to define b4_foo_user_names to be used for USER-LIST with three -# name occurrences and with correct quoting: -# -# m4_define([b4_foo_user_names], -# [[[[[[bar]], [[parser.y:1.7]], [[parser.y:1.16]]]], -# [[[[bar]], [[parser.y:5.7]], [[parser.y:5.16]]]], -# [[[[baz]], [[parser.y:8.7]], [[parser.y:8.16]]]]]]) -# -# The macro BISON-NAMESPACE(bar) must be defined iff the name bar of type WHAT -# is used by Bison (in the front-end or in the skeleton). Empty string names -# are fine, but it would be ugly for Bison to actually use one. -# -# For example, to use b4_foo_bison_names for BISON-NAMESPACE and define that -# the names bar and baz are used by Bison: -# -# m4_define([b4_foo_bison_names(bar)]) -# m4_define([b4_foo_bison_names(baz)]) -# -# To invoke b4_check_user_names with TYPE foo, with USER-LIST -# b4_foo_user_names, with BISON-NAMESPACE b4_foo_bison_names, and with correct -# quoting: -# -# b4_check_user_names([[foo]], [b4_foo_user_names], -# [[b4_foo_bison_names]]) -m4_define([b4_check_user_names], -[m4_foreach([b4_occurrence], $2, -[m4_pushdef([b4_occurrence], b4_occurrence)dnl -m4_pushdef([b4_user_name], m4_car(b4_occurrence))dnl -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 -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) -# ------------------------------- -# 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 -# Bison's usage of VARIABLE by defining -# b4_percent_define_bison_variables(VARIABLE). -# -# For example: -# -# 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_get_loc(VARIABLE) -# ----------------------------------- -# 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_fatal_at. Don't record this as a Bison usage of VARIABLE as there's no -# reason to suspect that the user-supplied value has yet influenced the output. -# -# For example: -# -# b4_complain_at(b4_percent_define_get_loc([[foo]]), [[invalid foo]]) -m4_define([b4_percent_define_get_loc], -[m4_ifdef([b4_percent_define_loc(]$1[)], - [m4_pushdef([b4_loc], m4_indir([b4_percent_define_loc(]$1[)]))dnl -b4_loc[]dnl -m4_popdef([b4_loc])], - [b4_fatal([[undefined %%define variable `%s' passed to b4_percent_define_get_loc]], [$1])])]) - -# b4_percent_define_get_syncline(VARIABLE) -# ---------------------------------------- -# 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 -# VARIABLE as there's no reason to suspect that the user-supplied value has yet -# influenced the output. -# -# For example: -# -# b4_percent_define_get_syncline([[foo]]) -m4_define([b4_percent_define_get_syncline], -[m4_ifdef([b4_percent_define_syncline(]$1[)], - [m4_indir([b4_percent_define_syncline(]$1[)])], - [b4_fatal([[undefined %%define variable `%s' passed to b4_percent_define_get_syncline]], [$1])])]) - -# b4_percent_define_ifdef(VARIABLE, IF-TRUE, [IF-FALSE]) -# ------------------------------------------------------ -# 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). -# -# For example: -# -# 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], - [$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, -# 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 -# already) or defined to any other value (possibly a user error). Also, record -# Bison's usage of VARIABLE by defining -# b4_percent_define_bison_variables(VARIABLE). -# -# For example: -# -# b4_percent_define_flag_if([[foo]], [[it's true]], [[it's false]]) -m4_define([b4_percent_define_flag_if], -[b4_percent_define_ifdef([$1], - [m4_case(b4_percent_define_get([$1]), - [], [$2], [true], [$2], [false], [$3], - [m4_expand_once([b4_complain_at(b4_percent_define_get_loc([$1]), - [[invalid value for %%define Boolean variable `%s']], - [$1])], - [[b4_percent_define_flag_if($1)]])])], - [b4_fatal([[undefined %%define variable `%s' passed to b4_percent_define_flag_if]], [$1])])]) - -# b4_percent_define_default(VARIABLE, DEFAULT) -# -------------------------------------------- -# 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. -# -# For example: -# -# b4_percent_define_default([[foo]], [[default value]]) -m4_define([b4_percent_define_default], -[m4_ifndef([b4_percent_define(]$1[)], - [m4_define([b4_percent_define(]$1[)], [$2])dnl - m4_define([b4_percent_define_loc(]$1[)], - [[[[[Bison:b4_percent_define_default]:1.0]], [[[Bison:b4_percent_define_default]:1.0]]]])dnl - m4_define([b4_percent_define_syncline(]$1[)], - [[]b4_syncline(1, [["[Bison:b4_percent_define_default]"]])[ -]])])]) - -# b4_percent_define_check_values(VALUES) -# -------------------------------------- -# Mimic muscle_percent_define_check_values in ../src/muscle_tab.h exactly -# except that the VALUES structure is more appropriate for M4. That is, VALUES -# is a list of sublists of strings. For each sublist, the first string is the -# name of a %define variable, and all remaining strings in that sublist are the -# valid values for that variable. Complain if such a variable is undefined (a -# Bison error since the default value should have been set already) or defined -# to any other value (possibly a user error). Don't record this as a Bison -# usage of the variable as there's no reason to suspect that the value has yet -# influenced the output. -# -# For example: -# -# b4_percent_define_check_values([[[[foo]], [[foo-value1]], [[foo-value2]]]], -# [[[[bar]], [[bar-value1]]]]) -m4_define([b4_percent_define_check_values], -[m4_foreach([b4_sublist], m4_quote($@), - [_b4_percent_define_check_values(b4_sublist)])]) - -m4_define([_b4_percent_define_check_values], -[m4_ifdef([b4_percent_define(]$1[)], - [m4_pushdef([b4_good_value], [0])dnl - m4_if($#, 1, [], - [m4_foreach([b4_value], m4_dquote(m4_shift($@)), - [m4_if(m4_indir([b4_percent_define(]$1[)]), b4_value, - [m4_define([b4_good_value], [1])])])])dnl - m4_if(b4_good_value, [0], - [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_popdef([b4_good_value])], - [b4_fatal([[undefined %%define variable `%s' passed to b4_percent_define_check_values]], [$1])])]) - -# b4_percent_code_get([QUALIFIER]) -# -------------------------------- -# If any %code blocks for QUALIFIER are defined, emit them beginning with a -# comment and ending with synclines and a newline. If QUALIFIER is not -# specified or empty, do this for the unqualified %code blocks. Also, record -# Bison's usage of QUALIFIER (if specified) by defining -# b4_percent_code_bison_qualifiers(QUALIFIER). -# -# For example, to emit any unqualified %code blocks followed by any %code -# blocks for the qualifier foo: -# -# b4_percent_code_get -# b4_percent_code_get([[foo]]) -m4_define([b4_percent_code_get], -[m4_pushdef([b4_macro_name], [[b4_percent_code(]$1[)]])dnl -m4_ifval([$1], [m4_define([b4_percent_code_bison_qualifiers(]$1[)])])dnl -m4_ifdef(b4_macro_name, -[b4_comment([m4_if([$#], [0], [[Unqualified %code]], - [["%code ]$1["]])[ blocks.]]) -b4_user_code([m4_indir(b4_macro_name)]) -])dnl -m4_popdef([b4_macro_name])]) - -# b4_percent_code_ifdef(QUALIFIER, IF-TRUE, [IF-FALSE]) -# ----------------------------------------------------- -# If any %code blocks for QUALIFIER (or unqualified %code blocks if -# QUALIFIER is empty) are defined, expand IF-TRUE, else expand IF-FALSE. -# Also, record Bison's usage of QUALIFIER (if specified) by defining -# b4_percent_code_bison_qualifiers(QUALIFIER). -m4_define([b4_percent_code_ifdef], -[m4_ifdef([b4_percent_code(]$1[)], - [m4_ifval([$1], [m4_define([b4_percent_code_bison_qualifiers(]$1[)])])$2], - [$3])]) - - -## ----------------------------------------------------------- ## -## After processing the skeletons, check that all the user's ## -## %define variables and %code qualifiers were used by Bison. ## -## ----------------------------------------------------------- ## - -m4_define([b4_check_user_names_wrap], -[m4_ifdef([b4_percent_]$1[_user_]$2[s], - [b4_check_user_names([[%]$1 $2], - [b4_percent_]$1[_user_]$2[s], - [[b4_percent_]$1[_bison_]$2[s]])])]) - -m4_wrap_lifo([ -b4_check_user_names_wrap([[define]], [[variable]]) -b4_check_user_names_wrap([[code]], [[qualifier]]) -]) |