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#  Copyright (C) 2003, 2004, 2007, 2008, 2009, 2010, 2011

#  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 duplicate options and generates a

# C file.

#

# This program uses functions from opt-functions.awk and code from

# opt-read.awk.

#

# Usage: awk -f opt-functions.awk -f opt-read.awk -f optc-gen.awk \

#            [-v header_name=header.h] < inputfile > options.c

# Dump that array of options into a C file.

END {

print "/* This file is auto-generated by optc-gen.awk.  */"

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 "#include " quote "insn-attr-common.h" quote

print ""

if (n_extra_c_includes > 0) {

        for (i = 0; i < n_extra_c_includes; i++) {

                print "#include " quote extra_c_includes[i] quote

        }

        print ""

}

for (i = 0; i < n_enums; i++) {

        name = enum_names[i]

        type = enum_type[name]

        print "static const struct cl_enum_arg cl_enum_" name \

            "_data[] = "

        print "{"

        print enum_data[name] "  { NULL, 0, 0 }"

        print "};"

        print ""

        print "static void"

        print "cl_enum_" name "_set (void *var, int value)"

        print "{"

        print "  *((" type " *) var) = (" type ") value;"

        print "}"

        print ""

        print "static int"

        print "cl_enum_" name "_get (const void *var)"

        print "{"

        print "  return (int) *((const " type " *) var);"

        print "}"

        print ""

}

print "const struct cl_enum cl_enums[] ="

print "{"

for (i = 0; i < n_enums; i++) {

        name = enum_names[i]

        ehelp = enum_help[name]

        if (ehelp == "")

                ehelp = "NULL"

        else

                ehelp = quote ehelp quote

        unknown_error = enum_unknown_error[name]

        if (unknown_error == "")

                unknown_error = "NULL"

        else

                unknown_error = quote unknown_error quote

        print "  {"

        print "    " ehelp ","

        print "    " unknown_error ","

        print "    cl_enum_" name "_data,"

        print "    sizeof (" enum_type[name] "),"

        print "    cl_enum_" name "_set,"

        print "    cl_enum_" name "_get"

        print "  },"

}

print "};"

print "const unsigned int cl_enums_count = " n_enums ";"

print ""

print "const struct gcc_options global_options_init =\n{"

for (i = 0; i < n_extra_vars; i++) {

        var = extra_vars[i]

        init = extra_vars[i]

        if (var ~ "=" ) {

                sub(".*= *", "", init)

        } else {

                init = "0"

        }

        sub(" *=.*", "", var)

        name = var

        sub("^.*[ *]", "", name)

        sub("\\[.*\\]$", "", name)

        var_seen[name] = 1

        print "  " init ", /* " name " */"

}

for (i = 0; i < n_opts; i++) {

        name = var_name(flags[i]);

        if (name == "")

                continue;

        init = opt_args("Init", flags[i])

        if (init != "") {

                if (name in var_init && var_init[name] != init)

                        print "#error multiple initializers for " name

                var_init[name] = init

        }

}

for (i = 0; i < n_opts; i++) {

        name = var_name(flags[i]);

        if (name == "")

                continue;

        if (name in var_seen)

                continue;

        if (name in var_init)

                init = var_init[name]

        else

                init = "0"

        print "  " init ", /* " name " */"

        var_seen[name] = 1;

}

for (i = 0; i < n_opts; i++) {

        name = static_var(opts[i], flags[i]);

        if (name != "") {

                print "  0, /* " name " (private state) */"

                print "#undef x_" name

        }

}

for (i = 0; i < n_opts; i++) {

        if (flag_set_p("SetByCombined", flags[i]))

                print "  false, /* frontend_set_" var_name(flags[i]) " */"

}

print "};"

print ""

print "struct gcc_options global_options;"

print "struct gcc_options global_options_set;"

print ""

print "const char * const lang_names[] =\n{"

for (i = 0; i < n_langs; i++) {

        macros[i] = "CL_" langs[i]

        gsub( "[^" alnum "_]", "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 "#if (1U << " n_langs ") > CL_MIN_OPTION_CLASS"

print "  #error the number of languages exceeds the implementation limit"

print "#endif"

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];

                if (help[i + 1] == "")

                        help[i + 1] = help[i]

                else if (help[i] != "" && help[i + 1] != help[i])

                        print "warning: multiple different help strings for " \

                                opts[i] ":\n\t" help[i] "\n\t" help[i + 1] \

                                | "cat 1>&2"

                i++;

                back_chain[i] = "N_OPTS";

                indices[opts[i]] = j;

        }

        j++;

}

for (i = 0; i < n_opts; i++) {

        # With identical flags, pick only the last one.  The

        # earlier loop ensured that it has all flags merged,

        # and a nonempty help text if one of the texts was nonempty.

        while( i + 1 != n_opts && opts[i] == opts[i + 1] ) {

                i++;

        }

        len = length (opts[i]);

        enum = opt_enum(opts[i])

        # 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;

        missing_arg_error = opt_args("MissingArgError", flags[i])

        if (missing_arg_error == "")

                missing_arg_error = "0"

        else

                missing_arg_error = quote missing_arg_error quote

        warn_message = opt_args("Warn", flags[i])

        if (warn_message == "")

                warn_message = "0"

        else

                warn_message = quote warn_message quote

        alias_arg = opt_args("Alias", flags[i])

        if (alias_arg == "") {

                if (flag_set_p("Ignore", flags[i]))

                        alias_data = "NULL, NULL, OPT_SPECIAL_ignore"

                else

                        alias_data = "NULL, NULL, N_OPTS"

        } else {

                alias_opt = nth_arg(0, alias_arg)

                alias_posarg = nth_arg(1, alias_arg)

                alias_negarg = nth_arg(2, alias_arg)

                if (var_ref(opts[i], flags[i]) != "-1")

                        print "#error Alias setting variable"

                if (alias_posarg != "" && alias_negarg == "") {

                        if (!flag_set_p("RejectNegative", flags[i]) \

                            && opts[i] ~ "^[Wfm]")

                                print "#error Alias with single argument " \

                                        "allowing negative form"

                }

                if (alias_posarg != "" \

                    && flag_set_p("NegativeAlias", flags[i])) {

                        print "#error Alias with multiple arguments " \

                                "used with NegativeAlias"

                }

                alias_opt = opt_enum(alias_opt)

                if (alias_posarg == "")

                        alias_posarg = "NULL"

                else

                        alias_posarg = quote alias_posarg quote

                if (alias_negarg == "")

                        alias_negarg = "NULL"

                else

                        alias_negarg = quote alias_negarg quote

                alias_data = alias_posarg ", " alias_negarg ", " alias_opt

        }

        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;

                }

        }

        # Split the printf after %u to work around an ia64-hp-hpux11.23

        # awk bug.

        printf("  { %c-%s%c,\n    %s,\n    %s,\n    %s,\n    %s, %s, %u,",

               quote, opts[i], quote, hlp, missing_arg_error, warn_message,

               alias_data, back_chain[i], len)

        printf(" %d,\n", idx)

        condition = opt_args("Condition", flags[i])

        cl_flags = switch_flags(flags[i])

        cl_bit_fields = switch_bit_fields(flags[i])

        cl_zero_bit_fields = switch_bit_fields("")

        if (condition != "")

                printf("#if %s\n" \

                       "    %s,\n" \

                       "    0, %s,\n" \

                       "#else\n" \

                       "    0,\n" \

                       "    1 /* Disabled.  */, %s,\n" \

                       "#endif\n",

                       condition, cl_flags, cl_bit_fields, cl_zero_bit_fields)

        else

                printf("    %s,\n" \

                       "    0, %s,\n",

                       cl_flags, cl_bit_fields)

        printf("    %s, %s }%s\n", var_ref(opts[i], flags[i]),

               var_set(flags[i]), comma)

}

print "};"

}