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Automatically call flex/bison if necessary

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ANGLE translator's parser code generation is changed to use the binaries
of flex/bison stored in the cloud.  scripts/run_code_generation.py now
automatically runs these files if the input files change.

Bug: angleproject:3419
Change-Id: Icce4247f93b27baf8ee12dbb16112fa2cc98c111
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1940572
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
This commit is contained in:
Shahbaz Youssefi
2019-11-25 16:14:55 -05:00
committed by Commit Bot
parent 62a93045cd
commit 5efb36b9af
38 changed files with 14545 additions and 4907 deletions
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* eol=lf

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Name: Autoconf M4 macros used by Bison
Short Name: m4sugar
URL: https://www.gnu.org/software/autoconf/
Version: unknown
License: GPL
License File: LICENSE
Security critical: no
Description:
Bison uses M4 to generate its output, and uses the utility M4 macros in this
directory.

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# -*- Autoconf -*-
# This file is part of Autoconf.
# foreach-based replacements for recursive functions.
# Speeds up GNU M4 1.4.x by avoiding quadratic $@ recursion, but penalizes
# GNU M4 1.6 by requiring more memory and macro expansions.
#
# Copyright (C) 2008-2017 Free Software Foundation, Inc.
# This file is part of Autoconf. 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.
#
# Under Section 7 of GPL version 3, you are granted additional
# permissions described in the Autoconf Configure Script Exception,
# version 3.0, as published by the Free Software Foundation.
#
# You should have received a copy of the GNU General Public License
# and a copy of the Autoconf Configure Script Exception along with
# this program; see the files COPYINGv3 and COPYING.EXCEPTION
# respectively. If not, see <https://www.gnu.org/licenses/>.
# Written by Eric Blake.
# In M4 1.4.x, every byte of $@ is rescanned. This means that an
# algorithm on n arguments that recurses with one less argument each
# iteration will scan n * (n + 1) / 2 arguments, for O(n^2) time. In
# M4 1.6, this was fixed so that $@ is only scanned once, then
# back-references are made to information stored about the scan.
# Thus, n iterations need only scan n arguments, for O(n) time.
# Additionally, in M4 1.4.x, recursive algorithms did not clean up
# memory very well, requiring O(n^2) memory rather than O(n) for n
# iterations.
#
# This file is designed to overcome the quadratic nature of $@
# recursion by writing a variant of m4_foreach that uses m4_for rather
# than $@ recursion to operate on the list. This involves more macro
# expansions, but avoids the need to rescan a quadratic number of
# arguments, making these replacements very attractive for M4 1.4.x.
# On the other hand, in any version of M4, expanding additional macros
# costs additional time; therefore, in M4 1.6, where $@ recursion uses
# fewer macros, these replacements actually pessimize performance.
# Additionally, the use of $10 to mean the tenth argument violates
# POSIX; although all versions of m4 1.4.x support this meaning, a
# future m4 version may switch to take it as the first argument
# concatenated with a literal 0, so the implementations in this file
# are not future-proof. Thus, this file is conditionally included as
# part of m4_init(), only when it is detected that M4 probably has
# quadratic behavior (ie. it lacks the macro __m4_version__).
#
# Please keep this file in sync with m4sugar.m4.
# _m4_foreach(PRE, POST, IGNORED, ARG...)
# ---------------------------------------
# Form the common basis of the m4_foreach and m4_map macros. For each
# ARG, expand PRE[ARG]POST[]. The IGNORED argument makes recursion
# easier, and must be supplied rather than implicit.
#
# This version minimizes the number of times that $@ is evaluated by
# using m4_for to generate a boilerplate into _m4_f then passing $@ to
# that temporary macro. Thus, the recursion is done in m4_for without
# reparsing any user input, and is not quadratic. For an idea of how
# this works, note that m4_foreach(i,[1,2],[i]) calls
# _m4_foreach([m4_define([i],],[)i],[],[1],[2])
# which defines _m4_f:
# $1[$4]$2[]$1[$5]$2[]_m4_popdef([_m4_f])
# then calls _m4_f([m4_define([i],],[)i],[],[1],[2]) for a net result:
# m4_define([i],[1])i[]m4_define([i],[2])i[]_m4_popdef([_m4_f]).
m4_define([_m4_foreach],
[m4_if([$#], [3], [],
[m4_pushdef([_m4_f], _m4_for([4], [$#], [1],
[$0_([1], [2],], [)])[_m4_popdef([_m4_f])])_m4_f($@)])])
m4_define([_m4_foreach_],
[[$$1[$$3]$$2[]]])
# m4_case(SWITCH, VAL1, IF-VAL1, VAL2, IF-VAL2, ..., DEFAULT)
# -----------------------------------------------------------
# Find the first VAL that SWITCH matches, and expand the corresponding
# IF-VAL. If there are no matches, expand DEFAULT.
#
# Use m4_for to create a temporary macro in terms of a boilerplate
# m4_if with final cleanup. If $# is even, we have DEFAULT; if it is
# odd, then rounding the last $# up in the temporary macro is
# harmless. For example, both m4_case(1,2,3,4,5) and
# m4_case(1,2,3,4,5,6) result in the intermediate _m4_case being
# m4_if([$1],[$2],[$3],[$1],[$4],[$5],_m4_popdef([_m4_case])[$6])
m4_define([m4_case],
[m4_if(m4_eval([$# <= 2]), [1], [$2],
[m4_pushdef([_$0], [m4_if(]_m4_for([2], m4_eval([($# - 1) / 2 * 2]), [2],
[_$0_(], [)])[_m4_popdef(
[_$0])]m4_dquote($m4_eval([($# + 1) & ~1]))[)])_$0($@)])])
m4_define([_m4_case_],
[$0_([1], [$1], m4_incr([$1]))])
m4_define([_m4_case__],
[[[$$1],[$$2],[$$3],]])
# m4_bmatch(SWITCH, RE1, VAL1, RE2, VAL2, ..., DEFAULT)
# -----------------------------------------------------
# m4 equivalent of
#
# if (SWITCH =~ RE1)
# VAL1;
# elif (SWITCH =~ RE2)
# VAL2;
# elif ...
# ...
# else
# DEFAULT
#
# We build the temporary macro _m4_b:
# m4_define([_m4_b], _m4_defn([_m4_bmatch]))_m4_b([$1], [$2], [$3])...
# _m4_b([$1], [$m-1], [$m])_m4_b([], [], [$m+1]_m4_popdef([_m4_b]))
# then invoke m4_unquote(_m4_b($@)), for concatenation with later text.
m4_define([m4_bmatch],
[m4_if([$#], 0, [m4_fatal([$0: too few arguments: $#])],
[$#], 1, [m4_fatal([$0: too few arguments: $#: $1])],
[$#], 2, [$2],
[m4_pushdef([_m4_b], [m4_define([_m4_b],
_m4_defn([_$0]))]_m4_for([3], m4_eval([($# + 1) / 2 * 2 - 1]),
[2], [_$0_(], [)])[_m4_b([], [],]m4_dquote([$]m4_eval(
[($# + 1) / 2 * 2]))[_m4_popdef([_m4_b]))])m4_unquote(_m4_b($@))])])
m4_define([_m4_bmatch],
[m4_if(m4_bregexp([$1], [$2]), [-1], [], [[$3]m4_define([$0])])])
m4_define([_m4_bmatch_],
[$0_([1], m4_decr([$1]), [$1])])
m4_define([_m4_bmatch__],
[[_m4_b([$$1], [$$2], [$$3])]])
# m4_cond(TEST1, VAL1, IF-VAL1, TEST2, VAL2, IF-VAL2, ..., [DEFAULT])
# -------------------------------------------------------------------
# Similar to m4_if, except that each TEST is expanded when encountered.
# If the expansion of TESTn matches the string VALn, the result is IF-VALn.
# The result is DEFAULT if no tests passed. This macro allows
# short-circuiting of expensive tests, where it pays to arrange quick
# filter tests to run first.
#
# m4_cond already guarantees either 3*n or 3*n + 1 arguments, 1 <= n.
# We only have to speed up _m4_cond, by building the temporary _m4_c:
# m4_define([_m4_c], _m4_defn([m4_unquote]))_m4_c([m4_if(($1), [($2)],
# [[$3]m4_define([_m4_c])])])_m4_c([m4_if(($4), [($5)],
# [[$6]m4_define([_m4_c])])])..._m4_c([m4_if(($m-2), [($m-1)],
# [[$m]m4_define([_m4_c])])])_m4_c([[$m+1]]_m4_popdef([_m4_c]))
# We invoke m4_unquote(_m4_c($@)), for concatenation with later text.
m4_define([_m4_cond],
[m4_pushdef([_m4_c], [m4_define([_m4_c],
_m4_defn([m4_unquote]))]_m4_for([2], m4_eval([$# / 3 * 3 - 1]), [3],
[$0_(], [)])[_m4_c(]m4_dquote(m4_dquote(
[$]m4_eval([$# / 3 * 3 + 1])))[_m4_popdef([_m4_c]))])m4_unquote(_m4_c($@))])
m4_define([_m4_cond_],
[$0_(m4_decr([$1]), [$1], m4_incr([$1]))])
m4_define([_m4_cond__],
[[_m4_c([m4_if(($$1), [($$2)], [[$$3]m4_define([_m4_c])])])]])
# m4_bpatsubsts(STRING, RE1, SUBST1, RE2, SUBST2, ...)
# ----------------------------------------------------
# m4 equivalent of
#
# $_ = STRING;
# s/RE1/SUBST1/g;
# s/RE2/SUBST2/g;
# ...
#
# m4_bpatsubsts already validated an odd number of arguments; we only
# need to speed up _m4_bpatsubsts. To avoid nesting, we build the
# temporary _m4_p:
# m4_define([_m4_p], [$1])m4_define([_m4_p],
# m4_bpatsubst(m4_dquote(_m4_defn([_m4_p])), [$2], [$3]))m4_define([_m4_p],
# m4_bpatsubst(m4_dquote(_m4_defn([_m4_p])), [$4], [$5]))m4_define([_m4_p],...
# m4_bpatsubst(m4_dquote(_m4_defn([_m4_p])), [$m-1], [$m]))m4_unquote(
# _m4_defn([_m4_p])_m4_popdef([_m4_p]))
m4_define([_m4_bpatsubsts],
[m4_pushdef([_m4_p], [m4_define([_m4_p],
]m4_dquote([$]1)[)]_m4_for([3], [$#], [2], [$0_(],
[)])[m4_unquote(_m4_defn([_m4_p])_m4_popdef([_m4_p]))])_m4_p($@)])
m4_define([_m4_bpatsubsts_],
[$0_(m4_decr([$1]), [$1])])
m4_define([_m4_bpatsubsts__],
[[m4_define([_m4_p],
m4_bpatsubst(m4_dquote(_m4_defn([_m4_p])), [$$1], [$$2]))]])
# m4_shiftn(N, ...)
# -----------------
# Returns ... shifted N times. Useful for recursive "varargs" constructs.
#
# m4_shiftn already validated arguments; we only need to speed up
# _m4_shiftn. If N is 3, then we build the temporary _m4_s, defined as
# ,[$5],[$6],...,[$m]_m4_popdef([_m4_s])
# before calling m4_shift(_m4_s($@)).
m4_define([_m4_shiftn],
[m4_if(m4_incr([$1]), [$#], [], [m4_pushdef([_m4_s],
_m4_for(m4_eval([$1 + 2]), [$#], [1],
[[,]m4_dquote($], [)])[_m4_popdef([_m4_s])])m4_shift(_m4_s($@))])])
# m4_do(STRING, ...)
# ------------------
# This macro invokes all its arguments (in sequence, of course). It is
# useful for making your macros more structured and readable by dropping
# unnecessary dnl's and have the macros indented properly.
#
# Here, we use the temporary macro _m4_do, defined as
# $1[]$2[]...[]$n[]_m4_popdef([_m4_do])
m4_define([m4_do],
[m4_if([$#], [0], [],
[m4_pushdef([_$0], _m4_for([1], [$#], [1],
[$], [[[]]])[_m4_popdef([_$0])])_$0($@)])])
# m4_dquote_elt(ARGS)
# -------------------
# Return ARGS as an unquoted list of double-quoted arguments.
#
# _m4_foreach to the rescue.
m4_define([m4_dquote_elt],
[m4_if([$#], [0], [], [[[$1]]_m4_foreach([,m4_dquote(], [)], $@)])])
# m4_reverse(ARGS)
# ----------------
# Output ARGS in reverse order.
#
# Invoke _m4_r($@) with the temporary _m4_r built as
# [$m], [$m-1], ..., [$2], [$1]_m4_popdef([_m4_r])
m4_define([m4_reverse],
[m4_if([$#], [0], [], [$#], [1], [[$1]],
[m4_pushdef([_m4_r], [[$$#]]_m4_for(m4_decr([$#]), [1], [-1],
[[, ]m4_dquote($], [)])[_m4_popdef([_m4_r])])_m4_r($@)])])
# m4_map_args_pair(EXPRESSION, [END-EXPR = EXPRESSION], ARG...)
# -------------------------------------------------------------
# Perform a pairwise grouping of consecutive ARGs, by expanding
# EXPRESSION([ARG1], [ARG2]). If there are an odd number of ARGs, the
# final argument is expanded with END-EXPR([ARGn]).
#
# Build the temporary macro _m4_map_args_pair, with the $2([$m+1])
# only output if $# is odd:
# $1([$3], [$4])[]$1([$5], [$6])[]...$1([$m-1],
# [$m])[]m4_default([$2], [$1])([$m+1])[]_m4_popdef([_m4_map_args_pair])
m4_define([m4_map_args_pair],
[m4_if([$#], [0], [m4_fatal([$0: too few arguments: $#])],
[$#], [1], [m4_fatal([$0: too few arguments: $#: $1])],
[$#], [2], [],
[$#], [3], [m4_default([$2], [$1])([$3])[]],
[m4_pushdef([_$0], _m4_for([3],
m4_eval([$# / 2 * 2 - 1]), [2], [_$0_(], [)])_$0_end(
[1], [2], [$#])[_m4_popdef([_$0])])_$0($@)])])
m4_define([_m4_map_args_pair_],
[$0_([1], [$1], m4_incr([$1]))])
m4_define([_m4_map_args_pair__],
[[$$1([$$2], [$$3])[]]])
m4_define([_m4_map_args_pair_end],
[m4_if(m4_eval([$3 & 1]), [1], [[m4_default([$$2], [$$1])([$$3])[]]])])
# m4_join(SEP, ARG1, ARG2...)
# ---------------------------
# Produce ARG1SEPARG2...SEPARGn. Avoid back-to-back SEP when a given ARG
# is the empty string. No expansion is performed on SEP or ARGs.
#
# Use a self-modifying separator, since we don't know how many
# arguments might be skipped before a separator is first printed, but
# be careful if the separator contains $. _m4_foreach to the rescue.
m4_define([m4_join],
[m4_pushdef([_m4_sep], [m4_define([_m4_sep], _m4_defn([m4_echo]))])]dnl
[_m4_foreach([_$0([$1],], [)], $@)_m4_popdef([_m4_sep])])
m4_define([_m4_join],
[m4_if([$2], [], [], [_m4_sep([$1])[$2]])])
# m4_joinall(SEP, ARG1, ARG2...)
# ------------------------------
# Produce ARG1SEPARG2...SEPARGn. An empty ARG results in back-to-back SEP.
# No expansion is performed on SEP or ARGs.
#
# A bit easier than m4_join. _m4_foreach to the rescue.
m4_define([m4_joinall],
[[$2]m4_if(m4_eval([$# <= 2]), [1], [],
[_m4_foreach([$1], [], m4_shift($@))])])
# m4_list_cmp(A, B)
# -----------------
# Compare the two lists of integer expressions A and B.
#
# m4_list_cmp takes care of any side effects; we only override
# _m4_list_cmp_raw, where we can safely expand lists multiple times.
# First, insert padding so that both lists are the same length; the
# trailing +0 is necessary to handle a missing list. Next, create a
# temporary macro to perform pairwise comparisons until an inequality
# is found. For example, m4_list_cmp([1], [1,2]) creates _m4_cmp as
# m4_if(m4_eval([($1) != ($3)]), [1], [m4_cmp([$1], [$3])],
# m4_eval([($2) != ($4)]), [1], [m4_cmp([$2], [$4])],
# [0]_m4_popdef([_m4_cmp]))
# then calls _m4_cmp([1+0], [0*2], [1], [2+0])
m4_define([_m4_list_cmp_raw],
[m4_if([$1], [$2], 0,
[_m4_list_cmp($1+0_m4_list_pad(m4_count($1), m4_count($2)),
$2+0_m4_list_pad(m4_count($2), m4_count($1)))])])
m4_define([_m4_list_pad],
[m4_if(m4_eval($1 < $2), [1],
[_m4_for(m4_incr([$1]), [$2], [1], [,0*])])])
m4_define([_m4_list_cmp],
[m4_pushdef([_m4_cmp], [m4_if(]_m4_for(
[1], m4_eval([$# >> 1]), [1], [$0_(], [,]m4_eval([$# >> 1])[)])[
[0]_m4_popdef([_m4_cmp]))])_m4_cmp($@)])
m4_define([_m4_list_cmp_],
[$0_([$1], m4_eval([$1 + $2]))])
m4_define([_m4_list_cmp__],
[[m4_eval([($$1) != ($$2)]), [1], [m4_cmp([$$1], [$$2])],
]])
# m4_max(EXPR, ...)
# m4_min(EXPR, ...)
# -----------------
# Return the decimal value of the maximum (or minimum) in a series of
# integer expressions.
#
# _m4_foreach to the rescue; we only need to replace _m4_minmax. Here,
# we need a temporary macro to track the best answer so far, so that
# the foreach expression is tractable.
m4_define([_m4_minmax],
[m4_pushdef([_m4_best], m4_eval([$2]))_m4_foreach(
[m4_define([_m4_best], $1(_m4_best,], [))], m4_shift($@))]dnl
[_m4_best[]_m4_popdef([_m4_best])])
# m4_set_add_all(SET, VALUE...)
# -----------------------------
# Add each VALUE into SET. This is O(n) in the number of VALUEs, and
# can be faster than calling m4_set_add for each VALUE.
#
# _m4_foreach to the rescue. If no deletions have occurred, then
# avoid the speed penalty of m4_set_add.
m4_define([m4_set_add_all],
[m4_if([$#], [0], [], [$#], [1], [],
[m4_define([_m4_set_size($1)], m4_eval(m4_set_size([$1])
+ m4_len(_m4_foreach(m4_ifdef([_m4_set_cleanup($1)],
[[m4_set_add]], [[_$0]])[([$1],], [)], $@))))])])
m4_define([_m4_set_add_all],
[m4_ifdef([_m4_set([$1],$2)], [],
[m4_define([_m4_set([$1],$2)],
[1])m4_pushdef([_m4_set([$1])], [$2])-])])

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GNU GENERAL PUBLIC LICENSE
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Corresponding Source of the work from the predecessor in interest, if
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You may not impose any further restrictions on the exercise of the
rights granted or affirmed under this License. For example, you may
not impose a license fee, royalty, or other charge for exercise of
rights granted under this License, and you may not initiate litigation
(including a cross-claim or counterclaim in a lawsuit) alleging that
any patent claim is infringed by making, using, selling, offering for
sale, or importing the Program or any portion of it.
11. Patents.
A "contributor" is a copyright holder who authorizes use under this
License of the Program or a work on which the Program is based. The
work thus licensed is called the contributor's "contributor version".
A contributor's "essential patent claims" are all patent claims
owned or controlled by the contributor, whether already acquired or
hereafter acquired, that would be infringed by some manner, permitted
by this License, of making, using, or selling its contributor version,
but do not include claims that would be infringed only as a
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Each contributor grants you a non-exclusive, worldwide, royalty-free
patent license under the contributor's essential patent claims, to
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In the following three paragraphs, a "patent license" is any express
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(such as an express permission to practice a patent or covenant not to
sue for patent infringement). To "grant" such a patent license to a
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If you convey a covered work, knowingly relying on a patent license,
and the Corresponding Source of the work is not available for anyone
to copy, free of charge and under the terms of this License, through a
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then you must either (1) cause the Corresponding Source to be so
available, or (2) arrange to deprive yourself of the benefit of the
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consistent with the requirements of this License, to extend the patent
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covered work in a country, or your recipient's use of the covered work
in a country, would infringe one or more identifiable patents in that
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If, pursuant to or in connection with a single transaction or
arrangement, you convey, or propagate by procuring conveyance of, a
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or convey a specific copy of the covered work, then the patent license
you grant is automatically extended to all recipients of the covered
work and works based on it.
A patent license is "discriminatory" if it does not include within
the scope of its coverage, prohibits the exercise of, or is
conditioned on the non-exercise of one or more of the rights that are
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conveyed by you (or copies made from those copies), or (b) primarily
for and in connection with specific products or compilations that
contain the covered work, unless you entered into that arrangement,
or that patent license was granted, prior to 28 March 2007.
Nothing in this License shall be construed as excluding or limiting
any implied license or other defenses to infringement that may
otherwise be available to you under applicable patent law.
12. No Surrender of Others' Freedom.
If conditions are imposed on you (whether by court order, agreement or
otherwise) that contradict the conditions of this License, they do not
excuse you from the conditions of this License. If you cannot convey a
covered work so as to satisfy simultaneously your obligations under this
License and any other pertinent obligations, then as a consequence you may
not convey it at all. For example, if you agree to terms that obligate you
to collect a royalty for further conveying from those to whom you convey
the Program, the only way you could satisfy both those terms and this
License would be to refrain entirely from conveying the Program.
13. Use with the GNU Affero General Public License.
Notwithstanding any other provision of this License, you have
permission to link or combine any covered work with a work licensed
under version 3 of the GNU Affero General Public License into a single
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License will continue to apply to the part which is the covered work,
but the special requirements of the GNU Affero General Public License,
section 13, concerning interaction through a network will apply to the
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14. Revised Versions of this License.
The Free Software Foundation may publish revised and/or new versions of
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Each version is given a distinguishing version number. If the
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option of following the terms and conditions either of that numbered
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If the Program specifies that a proxy can decide which future
versions of the GNU General Public License can be used, that proxy's
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to choose that version for the Program.
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15. Disclaimer of Warranty.
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17. Interpretation of Sections 15 and 16.
If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
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/>.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
<program> Copyright (C) <year> <name of author>
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<http://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.

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Name: Bison skeletons
URL: https://www.gnu.org/software/bison/
Version: 3.3.2
License: GPL
License File: LICENSE
Security critical: no
Description:
Bison is a parser generator. It uses skeleton files as templates for building
similar languages.

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-*- Autoconf -*-
# Common code for C-like languages (C, C++, Java, etc.)
# Copyright (C) 2012-2015, 2018-2019 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(TEXT, OPEN, CONTINUE, END)
# --------------------------------------
# Put TEXT in comment. Avoid trailing spaces: don't indent empty lines.
# Avoid adding indentation to the first line, as the indentation comes
# from OPEN. That's why we don't patsubst([$1], [^\(.\)], [ \1]).
#
# Prefix all the output lines with PREFIX.
m4_define([_b4_comment],
[$2[]m4_bpatsubst(m4_expand([[$1]]), [
\(.\)], [
$3\1])$4])
# b4_comment(TEXT, [PREFIX])
# --------------------------
# Put TEXT in comment. Prefix all the output lines with PREFIX.
m4_define([b4_comment],
[_b4_comment([$1], [$2/* ], [$2 ], [ */])])
# _b4_dollar_dollar(VALUE, SYMBOL-NUM, FIELD, DEFAULT-FIELD)
# ----------------------------------------------------------
# If FIELD (or DEFAULT-FIELD) is non-null, return "VALUE.FIELD",
# otherwise just VALUE. Be sure to pass "(VALUE)" if VALUE is a
# pointer.
m4_define([_b4_dollar_dollar],
[b4_symbol_value([$1],
[$2],
m4_if([$3], [[]],
[[$4]], [[$3]]))])
# b4_dollar_pushdef(VALUE-POINTER, SYMBOL-NUM, [TYPE_TAG], LOCATION)
# b4_dollar_popdef
# ------------------------------------------------------------------
# Define b4_dollar_dollar for VALUE-POINTER and DEFAULT-FIELD,
# and b4_at_dollar for LOCATION.
m4_define([b4_dollar_pushdef],
[m4_pushdef([b4_dollar_dollar],
[_b4_dollar_dollar([$1], [$2], m4_dquote($][1), [$3])])dnl
m4_pushdef([b4_at_dollar], [$4])dnl
])
m4_define([b4_dollar_popdef],
[m4_popdef([b4_at_dollar])dnl
m4_popdef([b4_dollar_dollar])dnl
])

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-*- Autoconf -*-
# C M4 Macros for Bison.
# Copyright (C) 2002, 2004-2015, 2018-2019 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/>.
m4_include(b4_skeletonsdir/[c-like.m4])
# b4_tocpp(STRING)
# ----------------
# Convert STRING into a valid C macro name.
m4_define([b4_tocpp],
[m4_toupper(m4_bpatsubst(m4_quote($1), [[^a-zA-Z0-9]+], [_]))])
# b4_cpp_guard(FILE)
# ------------------
# A valid C macro name to use as a CPP header guard for FILE.
m4_define([b4_cpp_guard],
[[YY_]b4_tocpp(m4_defn([b4_prefix])/[$1])[_INCLUDED]])
# b4_cpp_guard_open(FILE)
# b4_cpp_guard_close(FILE)
# ------------------------
# If FILE does not expand to nothing, open/close CPP inclusion guards for FILE.
m4_define([b4_cpp_guard_open],
[m4_ifval(m4_quote($1),
[#ifndef b4_cpp_guard([$1])
# define b4_cpp_guard([$1])])])
m4_define([b4_cpp_guard_close],
[m4_ifval(m4_quote($1),
[#endif b4_comment([!b4_cpp_guard([$1])])])])
## ---------------- ##
## Identification. ##
## ---------------- ##
# b4_identification
# -----------------
# Depends on individual skeletons to define b4_pure_flag, b4_push_flag, or
# b4_pull_flag if they use the values of the %define variables api.pure or
# api.push-pull.
m4_define([b4_identification],
[[/* Identify Bison output. */
#define YYBISON 1
/* Bison version. */
#define YYBISON_VERSION "]b4_version["
/* Skeleton name. */
#define YYSKELETON_NAME ]b4_skeleton[]m4_ifdef([b4_pure_flag], [[
/* Pure parsers. */
#define YYPURE ]b4_pure_flag])[]m4_ifdef([b4_push_flag], [[
/* Push parsers. */
#define YYPUSH ]b4_push_flag])[]m4_ifdef([b4_pull_flag], [[
/* Pull parsers. */
#define YYPULL ]b4_pull_flag])[
]])
## ---------------- ##
## Default values. ##
## ---------------- ##
# b4_api_prefix, b4_api_PREFIX
# ----------------------------
# Corresponds to %define api.prefix
b4_percent_define_default([[api.prefix]], [[yy]])
m4_define([b4_api_prefix],
[b4_percent_define_get([[api.prefix]])])
m4_define([b4_api_PREFIX],
[m4_toupper(b4_api_prefix)])
# b4_prefix
# ---------
# If the %name-prefix is not given, it is api.prefix.
m4_define_default([b4_prefix], [b4_api_prefix])
# If the %union is not named, its name is YYSTYPE.
b4_percent_define_default([[api.value.union.name]],
[b4_api_PREFIX[][STYPE]])
## ------------------------ ##
## Pure/impure interfaces. ##
## ------------------------ ##
# b4_lex_formals
# --------------
# All the yylex formal arguments.
# b4_lex_param arrives quoted twice, but we want to keep only one level.
m4_define([b4_lex_formals],
[b4_pure_if([[[[YYSTYPE *yylvalp]], [[&yylval]]][]dnl
b4_locations_if([, [[YYLTYPE *yyllocp], [&yylloc]]])])dnl
m4_ifdef([b4_lex_param], [, ]b4_lex_param)])
# b4_lex
# ------
# Call yylex.
m4_define([b4_lex],
[b4_function_call([yylex], [int], b4_lex_formals)])
# b4_user_args
# ------------
m4_define([b4_user_args],
[m4_ifset([b4_parse_param], [, b4_args(b4_parse_param)])])
# b4_parse_param
# --------------
# If defined, b4_parse_param arrives double quoted, but below we prefer
# it to be single quoted.
m4_define([b4_parse_param],
b4_parse_param)
# b4_parse_param_for(DECL, FORMAL, BODY)
# ---------------------------------------
# Iterate over the user parameters, binding the declaration to DECL,
# the formal name to FORMAL, and evaluating the BODY.
m4_define([b4_parse_param_for],
[m4_foreach([$1_$2], m4_defn([b4_parse_param]),
[m4_pushdef([$1], m4_unquote(m4_car($1_$2)))dnl
m4_pushdef([$2], m4_shift($1_$2))dnl
$3[]dnl
m4_popdef([$2])dnl
m4_popdef([$1])dnl
])])
# b4_parse_param_use([VAL], [LOC])
# --------------------------------
# 'YYUSE' VAL, LOC if locations are enabled, and all the parse-params.
m4_define([b4_parse_param_use],
[m4_ifvaln([$1], [ YYUSE ([$1]);])dnl
b4_locations_if([m4_ifvaln([$2], [ YYUSE ([$2]);])])dnl
b4_parse_param_for([Decl], [Formal], [ YYUSE (Formal);
])dnl
])
## ------------ ##
## Data Types. ##
## ------------ ##
# b4_int_type(MIN, MAX)
# ---------------------
# Return the smallest int type able to handle numbers ranging from
# MIN to MAX (included).
m4_define([b4_int_type],
[m4_if(b4_ints_in($@, [0], [255]), [1], [unsigned char],
b4_ints_in($@, [-128], [127]), [1], [signed char],
b4_ints_in($@, [0], [65535]), [1], [unsigned short],
b4_ints_in($@, [-32768], [32767]), [1], [short],
m4_eval([0 <= $1]), [1], [unsigned],
[int])])
# b4_int_type_for(NAME)
# ---------------------
# Return the smallest int type able to handle numbers ranging from
# 'NAME_min' to 'NAME_max' (included).
m4_define([b4_int_type_for],
[b4_int_type($1_min, $1_max)])
# b4_table_value_equals(TABLE, VALUE, LITERAL)
# --------------------------------------------
# Without inducing a comparison warning from the compiler, check if the
# literal value LITERAL equals VALUE from table TABLE, which must have
# TABLE_min and TABLE_max defined.
m4_define([b4_table_value_equals],
[m4_if(m4_eval($3 < m4_indir([b4_]$1[_min])
|| m4_indir([b4_]$1[_max]) < $3), [1],
[[0]],
[(!!(($2) == ($3)))])])
## ----------------- ##
## Compiler issues. ##
## ----------------- ##
# b4_attribute_define([noreturn])
# -------------------------------
# Provide portable compiler "attributes". If "noreturn" is passed, define
# _Noreturn.
m4_define([b4_attribute_define],
[[#ifndef YY_ATTRIBUTE
# if (defined __GNUC__ \
&& (2 < __GNUC__ || (__GNUC__ == 2 && 96 <= __GNUC_MINOR__))) \
|| defined __SUNPRO_C && 0x5110 <= __SUNPRO_C
# define YY_ATTRIBUTE(Spec) __attribute__(Spec)
# else
# define YY_ATTRIBUTE(Spec) /* empty */
# endif
#endif
#ifndef YY_ATTRIBUTE_PURE
# define YY_ATTRIBUTE_PURE YY_ATTRIBUTE ((__pure__))
#endif
#ifndef YY_ATTRIBUTE_UNUSED
# define YY_ATTRIBUTE_UNUSED YY_ATTRIBUTE ((__unused__))
#endif
]m4_bmatch([$1], [\bnoreturn\b], [[/* The _Noreturn keyword of C11. */
#if ! defined _Noreturn
# if defined __cplusplus && 201103L <= __cplusplus
# define _Noreturn [[noreturn]]
# elif !(defined __STDC_VERSION__ && 201112 <= __STDC_VERSION__)
# if (3 <= __GNUC__ || (__GNUC__ == 2 && 8 <= __GNUC_MINOR__) \
|| 0x5110 <= __SUNPRO_C)
# define _Noreturn __attribute__ ((__noreturn__))
# elif defined _MSC_VER && 1200 <= _MSC_VER
# define _Noreturn __declspec (noreturn)
# else
# define _Noreturn
# endif
# endif
#endif
]])[/* Suppress unused-variable warnings by "using" E. */
#if ! defined lint || defined __GNUC__
# define YYUSE(E) ((void) (E))
#else
# define YYUSE(E) /* empty */
#endif
#if defined __GNUC__ && ! defined __ICC && 407 <= __GNUC__ * 100 + __GNUC_MINOR__
/* Suppress an incorrect diagnostic about yylval being uninitialized. */
# define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN \
_Pragma ("GCC diagnostic push") \
_Pragma ("GCC diagnostic ignored \"-Wuninitialized\"")\
_Pragma ("GCC diagnostic ignored \"-Wmaybe-uninitialized\"")
# define YY_IGNORE_MAYBE_UNINITIALIZED_END \
_Pragma ("GCC diagnostic pop")
#else
# define YY_INITIAL_VALUE(Value) Value
#endif
#ifndef YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
# define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
# define YY_IGNORE_MAYBE_UNINITIALIZED_END
#endif
#ifndef YY_INITIAL_VALUE
# define YY_INITIAL_VALUE(Value) /* Nothing. */
#endif
]])
# b4_null_define
# --------------
# Portability issues: define a YY_NULLPTR appropriate for the current
# language (C, C++98, or C++11).
#
# In C++ pre C++11 it is standard practice to use 0 (not NULL) for the
# null pointer. In C, prefer ((void*)0) to avoid having to include stdlib.h.
m4_define([b4_null_define],
[# ifndef YY_NULLPTR
# if defined __cplusplus
# if 201103L <= __cplusplus
# define YY_NULLPTR nullptr
# else
# define YY_NULLPTR 0
# endif
# else
# define YY_NULLPTR ((void*)0)
# endif
# endif[]dnl
])
# b4_null
# -------
# Return a null pointer constant.
m4_define([b4_null], [YY_NULLPTR])
## ---------##
## Values. ##
## ---------##
# b4_integral_parser_table_define(TABLE-NAME, CONTENT, COMMENT)
# -------------------------------------------------------------
# Define "yy<TABLE-NAME>" whose contents is CONTENT.
m4_define([b4_integral_parser_table_define],
[m4_ifvaln([$3], [b4_comment([$3], [ ])])dnl
static const b4_int_type_for([$2]) yy$1[[]] =
{
$2
};dnl
])
## ------------------------- ##
## Assigning token numbers. ##
## ------------------------- ##
# b4_token_define(TOKEN-NUM)
# --------------------------
# Output the definition of this token as #define.
m4_define([b4_token_define],
[b4_token_format([#define %s %s], [$1])])
# b4_token_defines
# ----------------
# Output the definition of the tokens.
m4_define([b4_token_defines],
[b4_any_token_visible_if([/* Tokens. */
m4_join([
], b4_symbol_map([b4_token_define]))
])])
# b4_token_enum(TOKEN-NUM)
# ------------------------
# Output the definition of this token as an enum.
m4_define([b4_token_enum],
[b4_token_format([%s = %s], [$1])])
# b4_token_enums
# --------------
# Output the definition of the tokens (if there are) as enums.
m4_define([b4_token_enums],
[b4_any_token_visible_if([[/* Token type. */
#ifndef ]b4_api_PREFIX[TOKENTYPE
# define ]b4_api_PREFIX[TOKENTYPE
enum ]b4_api_prefix[tokentype
{
]m4_join([,
],
b4_symbol_map([b4_token_enum]))[
};
#endif
]])])
# b4_token_enums_defines
# ----------------------
# Output the definition of the tokens (if there are any) as enums and,
# if POSIX Yacc is enabled, as #defines.
m4_define([b4_token_enums_defines],
[b4_token_enums[]b4_yacc_if([b4_token_defines])])
## ----------------- ##
## Semantic Values. ##
## ----------------- ##
# b4_symbol_value(VAL, [SYMBOL-NUM], [TYPE-TAG])
# ----------------------------------------------
# See README.
m4_define([b4_symbol_value],
[m4_ifval([$3],
[($1.$3)],
[m4_ifval([$2],
[b4_symbol_if([$2], [has_type],
[($1.b4_symbol([$2], [type]))],
[$1])],
[$1])])])
## ---------------------- ##
## Defining C functions. ##
## ---------------------- ##
# b4_function_define(NAME, RETURN-VALUE, [DECL1, NAME1], ...)
# -----------------------------------------------------------
# Declare the function NAME in C.
m4_define([b4_function_define],
[$2
$1 (b4_formals(m4_shift2($@)))[]dnl
])
# b4_formals([DECL1, NAME1], ...)
# -------------------------------
# The formal arguments of a C function definition.
m4_define([b4_formals],
[m4_if([$#], [0], [void],
[$#$1], [1], [void],
[m4_map_sep([b4_formal], [, ], [$@])])])
m4_define([b4_formal],
[$1])
## ----------------------- ##
## Declaring C functions. ##
## ----------------------- ##
# b4_function_declare(NAME, RETURN-VALUE, [DECL1, NAME1], ...)
# ------------------------------------------------------------
# Declare the function NAME.
m4_define([b4_function_declare],
[$2 $1 (b4_formals(m4_shift2($@)));[]dnl
])
## --------------------- ##
## Calling C functions. ##
## --------------------- ##
# b4_function_call(NAME, RETURN-VALUE, [DECL1, NAME1], ...)
# -----------------------------------------------------------
# Call the function NAME with arguments NAME1, NAME2 etc.
m4_define([b4_function_call],
[$1 (b4_args(m4_shift2($@)))[]dnl
])
# b4_args([DECL1, NAME1], ...)
# ----------------------------
# Output the arguments NAME1, NAME2...
m4_define([b4_args],
[m4_map_sep([b4_arg], [, ], [$@])])
m4_define([b4_arg],
[$2])
## ----------- ##
## Synclines. ##
## ----------- ##
# b4_sync_start(LINE, FILE)
# -------------------------
m4_define([b4_sync_start], [[#]line $1 $2])
## -------------- ##
## User actions. ##
## -------------- ##
# b4_case(LABEL, STATEMENTS)
# --------------------------
m4_define([b4_case],
[ case $1:
$2
b4_syncline([@oline@], [@ofile@])
break;])
# b4_predicate_case(LABEL, CONDITIONS)
# ------------------------------------
m4_define([b4_predicate_case],
[ case $1:
if (! (
$2)) YYERROR;
b4_syncline([@oline@], [@ofile@])
break;])
# b4_yydestruct_define
# --------------------
# Define the "yydestruct" function.
m4_define_default([b4_yydestruct_define],
[[/*-----------------------------------------------.
| Release the memory associated to this symbol. |
`-----------------------------------------------*/
]b4_function_define([yydestruct],
[static void],
[[const char *yymsg], [yymsg]],
[[int yytype], [yytype]],
[[YYSTYPE *yyvaluep], [yyvaluep]][]dnl
b4_locations_if( [, [[YYLTYPE *yylocationp], [yylocationp]]])[]dnl
m4_ifset([b4_parse_param], [, b4_parse_param]))[
{
]b4_parse_param_use([yyvaluep], [yylocationp])dnl
[ if (!yymsg)
yymsg = "Deleting";
YY_SYMBOL_PRINT (yymsg, yytype, yyvaluep, yylocationp);
YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
]b4_symbol_actions([destructor])[
YY_IGNORE_MAYBE_UNINITIALIZED_END
}]dnl
])
# b4_yy_symbol_print_define
# -------------------------
# Define the "yy_symbol_print" function.
m4_define_default([b4_yy_symbol_print_define],
[[
/*-----------------------------------.
| Print this symbol's value on YYO. |
`-----------------------------------*/
]b4_function_define([yy_symbol_value_print],
[static void],
[[FILE *yyo], [yyo]],
[[int yytype], [yytype]],
[[YYSTYPE const * const yyvaluep], [yyvaluep]][]dnl
b4_locations_if([, [[YYLTYPE const * const yylocationp], [yylocationp]]])[]dnl
m4_ifset([b4_parse_param], [, b4_parse_param]))[
{
FILE *yyoutput = yyo;
]b4_parse_param_use([yyoutput], [yylocationp])dnl
[ if (!yyvaluep)
return;]
dnl glr.c does not feature yytoknum.
m4_if(b4_skeleton, ["yacc.c"],
[[# ifdef YYPRINT
if (yytype < YYNTOKENS)
YYPRINT (yyo, yytoknum[yytype], *yyvaluep);
# endif
]])dnl
b4_symbol_actions([printer])[
}
/*---------------------------.
| Print this symbol on YYO. |
`---------------------------*/
]b4_function_define([yy_symbol_print],
[static void],
[[FILE *yyo], [yyo]],
[[int yytype], [yytype]],
[[YYSTYPE const * const yyvaluep], [yyvaluep]][]dnl
b4_locations_if([, [[YYLTYPE const * const yylocationp], [yylocationp]]])[]dnl
m4_ifset([b4_parse_param], [, b4_parse_param]))[
{
YYFPRINTF (yyo, "%s %s (",
yytype < YYNTOKENS ? "token" : "nterm", yytname[yytype]);
]b4_locations_if([ YY_LOCATION_PRINT (yyo, *yylocationp);
YYFPRINTF (yyo, ": ");
])dnl
[ yy_symbol_value_print (yyo, yytype, yyvaluep]dnl
b4_locations_if([, yylocationp])[]b4_user_args[);
YYFPRINTF (yyo, ")");
}]dnl
])
## ---------------- ##
## api.value.type. ##
## ---------------- ##
# ---------------------- #
# api.value.type=union. #
# ---------------------- #
# b4_symbol_type_register(SYMBOL-NUM)
# -----------------------------------
# Symbol SYMBOL-NUM has a type (for variant) instead of a type-tag.
# Extend the definition of %union's body (b4_union_members) with a
# field of that type, and extend the symbol's "type" field to point to
# the field name, instead of the type name.
m4_define([b4_symbol_type_register],
[m4_define([b4_symbol($1, type_tag)],
[b4_symbol_if([$1], [has_id],
[b4_symbol([$1], [id])],
[yytype_[]b4_symbol([$1], [number])])])dnl
m4_append([b4_union_members],
m4_expand([
b4_symbol_tag_comment([$1])dnl
b4_symbol([$1], [type]) b4_symbol([$1], [type_tag]);]))
])
# b4_type_define_tag(SYMBOL1-NUM, ...)
# ------------------------------------
# For the batch of symbols SYMBOL1-NUM... (which all have the same
# type), enhance the %union definition for each of them, and set
# there "type" field to the field tag name, instead of the type name.
m4_define([b4_type_define_tag],
[b4_symbol_if([$1], [has_type],
[m4_map([b4_symbol_type_register], [$@])])
])
# b4_symbol_value_union(VAL, SYMBOL-NUM, [TYPE])
# ----------------------------------------------
# Same of b4_symbol_value, but when api.value.type=union.
m4_define([b4_symbol_value_union],
[m4_ifval([$3],
[(*($3*)(&$1))],
[m4_ifval([$2],
[b4_symbol_if([$2], [has_type],
[($1.b4_symbol([$2], [type_tag]))],
[$1])],
[$1])])])
# b4_value_type_setup_union
# -------------------------
# Setup support for api.value.type=union. Symbols are defined with a
# type instead of a union member name: build the corresponding union,
# and give the symbols their tag.
m4_define([b4_value_type_setup_union],
[m4_define([b4_union_members])
b4_type_foreach([b4_type_define_tag])
m4_copy_force([b4_symbol_value_union], [b4_symbol_value])
])
# -------------------------- #
# api.value.type = variant. #
# -------------------------- #
# b4_value_type_setup_variant
# ---------------------------
# Setup support for api.value.type=variant. By default, fail, specialized
# by other skeletons.
m4_define([b4_value_type_setup_variant],
[b4_complain_at(b4_percent_define_get_loc([[api.value.type]]),
[['%s' does not support '%s']],
[b4_skeleton],
[%define api.value.type variant])])
# _b4_value_type_setup_keyword
# ----------------------------
# api.value.type is defined with a keyword/string syntax. Check if
# that is properly defined, and prepare its use.
m4_define([_b4_value_type_setup_keyword],
[b4_percent_define_check_values([[[[api.value.type]],
[[none]],
[[union]],
[[union-directive]],
[[variant]],
[[yystype]]]])dnl
m4_case(b4_percent_define_get([[api.value.type]]),
[union], [b4_value_type_setup_union],
[variant], [b4_value_type_setup_variant])])
# b4_value_type_setup
# -------------------
# Check if api.value.type is properly defined, and possibly prepare
# its use.
b4_define_silent([b4_value_type_setup],
[# Define default value.
b4_percent_define_ifdef([[api.value.type]], [],
[# %union => api.value.type=union-directive
m4_ifdef([b4_union_members],
[m4_define([b4_percent_define_kind(api.value.type)], [keyword])
m4_define([b4_percent_define(api.value.type)], [union-directive])],
[# no tag seen => api.value.type={int}
m4_if(b4_tag_seen_flag, 0,
[m4_define([b4_percent_define_kind(api.value.type)], [code])
m4_define([b4_percent_define(api.value.type)], [int])],
[# otherwise api.value.type=yystype
m4_define([b4_percent_define_kind(api.value.type)], [keyword])
m4_define([b4_percent_define(api.value.type)], [yystype])])])])
# Set up.
m4_bmatch(b4_percent_define_get_kind([[api.value.type]]),
[keyword\|string], [_b4_value_type_setup_keyword])
])
## -------------- ##
## Declarations. ##
## -------------- ##
# b4_value_type_define
# --------------------
m4_define([b4_value_type_define],
[b4_value_type_setup[]dnl
/* Value type. */
m4_bmatch(b4_percent_define_get_kind([[api.value.type]]),
[code],
[[#if ! defined ]b4_api_PREFIX[STYPE && ! defined ]b4_api_PREFIX[STYPE_IS_DECLARED
typedef ]b4_percent_define_get([[api.value.type]])[ ]b4_api_PREFIX[STYPE;
# define ]b4_api_PREFIX[STYPE_IS_TRIVIAL 1
# define ]b4_api_PREFIX[STYPE_IS_DECLARED 1
#endif
]],
[m4_bmatch(b4_percent_define_get([[api.value.type]]),
[union\|union-directive],
[[#if ! defined ]b4_api_PREFIX[STYPE && ! defined ]b4_api_PREFIX[STYPE_IS_DECLARED
]b4_percent_define_get_syncline([[api.value.union.name]])[
union ]b4_percent_define_get([[api.value.union.name]])[
{
]b4_user_union_members[
};
]b4_percent_define_get_syncline([[api.value.union.name]])[
typedef union ]b4_percent_define_get([[api.value.union.name]])[ ]b4_api_PREFIX[STYPE;
# define ]b4_api_PREFIX[STYPE_IS_TRIVIAL 1
# define ]b4_api_PREFIX[STYPE_IS_DECLARED 1
#endif
]])])])
# b4_location_type_define
# -----------------------
m4_define([b4_location_type_define],
[[/* Location type. */
#if ! defined ]b4_api_PREFIX[LTYPE && ! defined ]b4_api_PREFIX[LTYPE_IS_DECLARED
typedef struct ]b4_api_PREFIX[LTYPE ]b4_api_PREFIX[LTYPE;
struct ]b4_api_PREFIX[LTYPE
{
int first_line;
int first_column;
int last_line;
int last_column;
};
# define ]b4_api_PREFIX[LTYPE_IS_DECLARED 1
# define ]b4_api_PREFIX[LTYPE_IS_TRIVIAL 1
#endif
]])
# b4_declare_yylstype
# -------------------
# Declarations that might either go into the header (if --defines) or
# in the parser body. Declare YYSTYPE/YYLTYPE, and yylval/yylloc.
m4_define([b4_declare_yylstype],
[b4_value_type_define[]b4_locations_if([
b4_location_type_define])
b4_pure_if([], [[extern ]b4_api_PREFIX[STYPE ]b4_prefix[lval;
]b4_locations_if([[extern ]b4_api_PREFIX[LTYPE ]b4_prefix[lloc;]])])[]dnl
])
# b4_YYDEBUG_define
# -----------------
m4_define([b4_YYDEBUG_define],
[[/* Debug traces. */
]m4_if(b4_api_prefix, [yy],
[[#ifndef YYDEBUG
# define YYDEBUG ]b4_parse_trace_if([1], [0])[
#endif]],
[[#ifndef ]b4_api_PREFIX[DEBUG
# if defined YYDEBUG
#if YYDEBUG
# define ]b4_api_PREFIX[DEBUG 1
# else
# define ]b4_api_PREFIX[DEBUG 0
# endif
# else /* ! defined YYDEBUG */
# define ]b4_api_PREFIX[DEBUG ]b4_parse_trace_if([1], [0])[
# endif /* ! defined YYDEBUG */
#endif /* ! defined ]b4_api_PREFIX[DEBUG */]])[]dnl
])
# b4_declare_yydebug
# ------------------
m4_define([b4_declare_yydebug],
[b4_YYDEBUG_define[
#if ]b4_api_PREFIX[DEBUG
extern int ]b4_prefix[debug;
#endif][]dnl
])
# b4_yylloc_default_define
# ------------------------
# Define YYLLOC_DEFAULT.
m4_define([b4_yylloc_default_define],
[[/* YYLLOC_DEFAULT -- Set CURRENT to span from RHS[1] to RHS[N].
If N is 0, then set CURRENT to the empty location which ends
the previous symbol: RHS[0] (always defined). */
#ifndef YYLLOC_DEFAULT
# define YYLLOC_DEFAULT(Current, Rhs, N) \
do \
if (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; \
} \
else \
{ \
(Current).first_line = (Current).last_line = \
YYRHSLOC (Rhs, 0).last_line; \
(Current).first_column = (Current).last_column = \
YYRHSLOC (Rhs, 0).last_column; \
} \
while (0)
#endif
]])
# b4_yy_location_print_define
# ---------------------------
# Define YY_LOCATION_PRINT.
m4_define([b4_yy_location_print_define],
[b4_locations_if([[
/* YY_LOCATION_PRINT -- Print the location on the stream.
This macro was not mandated originally: define only if we know
we won't break user code: when these are the locations we know. */
#ifndef YY_LOCATION_PRINT
# if defined ]b4_api_PREFIX[LTYPE_IS_TRIVIAL && ]b4_api_PREFIX[LTYPE_IS_TRIVIAL
/* Print *YYLOCP on YYO. Private, do not rely on its existence. */
YY_ATTRIBUTE_UNUSED
]b4_function_define([yy_location_print_],
[static int],
[[FILE *yyo], [yyo]],
[[YYLTYPE const * const yylocp], [yylocp]])[
{
int res = 0;
int end_col = 0 != yylocp->last_column ? yylocp->last_column - 1 : 0;
if (0 <= yylocp->first_line)
{
res += YYFPRINTF (yyo, "%d", yylocp->first_line);
if (0 <= yylocp->first_column)
res += YYFPRINTF (yyo, ".%d", yylocp->first_column);
}
if (0 <= yylocp->last_line)
{
if (yylocp->first_line < yylocp->last_line)
{
res += YYFPRINTF (yyo, "-%d", yylocp->last_line);
if (0 <= end_col)
res += YYFPRINTF (yyo, ".%d", end_col);
}
else if (0 <= end_col && yylocp->first_column < end_col)
res += YYFPRINTF (yyo, "-%d", end_col);
}
return res;
}
# define YY_LOCATION_PRINT(File, Loc) \
yy_location_print_ (File, &(Loc))
# else
# define YY_LOCATION_PRINT(File, Loc) ((void) 0)
# endif
#endif]],
[[/* This macro is provided for backward compatibility. */
#ifndef YY_LOCATION_PRINT
# define YY_LOCATION_PRINT(File, Loc) ((void) 0)
#endif]])
])
# b4_yyloc_default
# ----------------
# Expand to a possible default value for yylloc.
m4_define([b4_yyloc_default],
[[
# if defined ]b4_api_PREFIX[LTYPE_IS_TRIVIAL && ]b4_api_PREFIX[LTYPE_IS_TRIVIAL
= { ]m4_join([, ],
m4_defn([b4_location_initial_line]),
m4_defn([b4_location_initial_column]),
m4_defn([b4_location_initial_line]),
m4_defn([b4_location_initial_column]))[ }
# endif
]])

1927
tools/flex-bison/third_party/skeletons/yacc.c vendored Normal file
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File diff suppressed because it is too large Load Diff

2
tools/flex-bison/update_flex_bison_binaries.py
View File

@@ -54,7 +54,7 @@ def main():
print('')
print('Update flex and bison binaries for %s.' % platform.system())
print('')
print('This binary was updated using %s.' % os.path.basename(__file__))
print('These binaries were updated using %s.' % os.path.basename(__file__))
print('Please see instructions in tools/flex-bison/README.md.')
print('')
print('flex is at version TODO.')