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# Copyright (C) 2003, 2004, 2007 Free Software Foundation, Inc.
# Contributed by Kelley Cook, June 2004.
# Original code from Neil Booth, May 2003.
#
# 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, 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; see the file COPYING3. If not see
# <http://www.gnu.org/licenses/>.
# This Awk script reads in the option records generated from
# opt-gather.awk, combines the flags of duplicat options and generates a
# C file.
#
# This program uses functions from opt-functions.awk
#
# Usage: awk -f opt-functions.awk -f optc-gen.awk \
# [-v header_name=header.h] < inputfile > options.c
BEGIN {
n_opts = 0
n_langs = 0
quote = "\042"
comma = ","
FS=SUBSEP
# Default the name of header created from opth-gen.awk to options.h
if (header_name == "") header_name="options.h"
}
# Collect the text and flags of each option into an array
{
if ($1 == "Language") {
langs[n_langs] = $2
n_langs++;
}
else {
name = opt_args("Mask", $1)
if (name == "") {
opts[n_opts] = $1
flags[n_opts] = $2
help[n_opts] = $3
n_opts++;
}
}
}
# Dump that array of options into a C file.
END {
print "/* This file is auto-generated by opts.sh. */"
print ""
n_headers = split(header_name, headers, " ")
for (i = 1; i <= n_headers; i++)
print "#include " quote headers[i] quote
print "#include " quote "opts.h" quote
print "#include " quote "intl.h" quote
print ""
print "#ifdef GCC_DRIVER"
print "int target_flags;"
print "#endif /* GCC_DRIVER */"
print ""
for (i = 0; i < n_opts; i++) {
name = var_name(flags[i]);
if (name == "")
continue;
if (flag_set_p("VarExists", flags[i])) {
# Need it for the gcc driver.
if (name in var_seen)
continue;
init = ""
gcc_driver = 1
}
else {
init = opt_args("Init", flags[i])
if (init != "")
init = " = " init;
else if (name in var_seen)
continue;
gcc_driver = 0
}
if (gcc_driver == 1)
print "#ifdef GCC_DRIVER"
print "/* Set by -" opts[i] "."
print " " help[i] " */"
print var_type(flags[i]) name init ";"
if (gcc_driver == 1)
print "#endif /* GCC_DRIVER */"
print ""
var_seen[name] = 1;
}
print ""
print "/* Local state variables. */"
for (i = 0; i < n_opts; i++) {
name = static_var(opts[i], flags[i]);
if (name != "")
print "static " var_type(flags[i]) name ";"
}
print ""
print "const char * const lang_names[] =\n{"
for (i = 0; i < n_langs; i++) {
macros[i] = "CL_" langs[i]
gsub( "[^A-Za-z0-9_]", "X", macros[i] )
s = substr(" ", length (macros[i]))
print " " quote langs[i] quote ","
}
print " 0\n};\n"
print "const unsigned int cl_options_count = N_OPTS;\n"
print "const unsigned int cl_lang_count = " n_langs ";\n"
print "const struct cl_option cl_options[] =\n{"
j = 0
for (i = 0; i < n_opts; i++) {
back_chain[i] = "N_OPTS";
indices[opts[i]] = j;
# Combine the flags of identical switches. Switches
# appear many times if they are handled by many front
# ends, for example.
while( i + 1 != n_opts && opts[i] == opts[i + 1] ) {
flags[i + 1] = flags[i] " " flags[i + 1];
i++;
back_chain[i] = "N_OPTS";
indices[opts[i]] = j;
}
j++;
}
for (i = 0; i < n_opts; i++) {
# Combine the flags of identical switches. Switches
# appear many times if they are handled by many front
# ends, for example.
while( i + 1 != n_opts && opts[i] == opts[i + 1] ) {
flags[i + 1] = flags[i] " " flags[i + 1];
i++;
}
len = length (opts[i]);
enum = "OPT_" opts[i]
if (opts[i] == "finline-limit=")
enum = enum "eq"
gsub ("[^A-Za-z0-9]", "_", enum)
# If this switch takes joined arguments, back-chain all
# subsequent switches to it for which it is a prefix. If
# a later switch S is a longer prefix of a switch T, T
# will be back-chained to S in a later iteration of this
# for() loop, which is what we want.
if (flag_set_p("Joined.*", flags[i])) {
for (j = i + 1; j < n_opts; j++) {
if (substr (opts[j], 1, len) != opts[i])
break;
back_chain[j] = enum;
}
}
s = substr(" ", length (opts[i]))
if (i + 1 == n_opts)
comma = ""
if (help[i] == "")
hlp = "0"
else
hlp = quote help[i] quote;
neg = opt_args("Negative", flags[i]);
if (neg != "")
idx = indices[neg]
else {
if (flag_set_p("RejectNegative", flags[i]))
idx = -1;
else {
if (opts[i] ~ "^[Wfm]")
idx = indices[opts[i]];
else
idx = -1;
}
}
printf(" { %c-%s%c,\n %s,\n %s, %u, %d,\n",
quote, opts[i], quote, hlp, back_chain[i], len, idx)
condition = opt_args("Condition", flags[i])
cl_flags = switch_flags(flags[i])
if (condition != "")
printf("#if %s\n" \
" %s,\n" \
"#else\n" \
" CL_DISABLED,\n" \
"#endif\n",
condition, cl_flags, cl_flags)
else
printf(" %s,\n", cl_flags)
printf(" %s, %s }%s\n", var_ref(opts[i], flags[i]),
var_set(flags[i]), comma)
}
print "};"
}
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