#  Copyright (C) 2003,2004 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 2, 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, write to the Free Software
# Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

# Some common subroutines for use by opt[ch]-gen.awk.

# APPLE LOCAL begin optimization pragmas 3124235/3420242
# Return nonzero if FLAGS contains a flag matching REGEX.
function flag_set_p(regex, flags)
{
	return (" " flags " ") ~ (" " regex " ")
}
# APPLE LOCAL end optimization pragmas 3124235/3420242

function switch_flags (flags)
{
	flags = " " flags " "
	result = "0"
	for (j = 0; j < n_langs; j++) {
		regex = " " langs[j] " "
		gsub ( "\\+", "\\+", regex )
		if (flags ~ regex)
			result = result " | " macros[j]
	}
	if (flags ~ " Common ") result = result " | CL_COMMON"
	# APPLE LOCAL mainline
	if (flags ~ " Target ") result = result " | CL_TARGET"
	if (flags ~ " Joined ") result = result " | CL_JOINED"
	if (flags ~ " JoinedOrMissing ") \
	    result = result " | CL_JOINED | CL_MISSING_OK"
	if (flags ~ " Separate ") result = result " | CL_SEPARATE"
	if (flags ~ " RejectNegative ") result = result " | CL_REJECT_NEGATIVE"
	if (flags ~ " UInteger ") result = result " | CL_UINTEGER"
	if (flags ~ " Undocumented ") result = result " | CL_UNDOCUMENTED"
	if (flags ~ " Report ") result = result " | CL_REPORT"
# APPLE LOCAL begin optimization pragmas 3124235/3420242
	if (flags ~ " VarUint ") result = result " | CL_VARUINT"
	if (flags ~ " PerFunc ") result = result " | CL_PERFUNC"
# APPLE LOCAL end optimization pragmas 3124235/3420242
	sub( "^0 \\| ", "", result )
	return result
}

function var_args(flags)
{
	if (flags !~ "Var\\(")
	    return ""
	sub(".*Var\\(", "", flags)
	sub("\\).*", "", flags)

	return flags
}
function var_name(flags)
{
	s = var_args(flags)
	if (s == "")
		return "";
	sub( ",.*", "", s)
	return s
}
function var_set(flags)
{
	s = var_args(flags)
	if (s !~ ",")
		return "0, 0"
	sub( "[^,]*,", "", s)
	return "1, " s
}
function var_ref(flags)
{
	name = var_name(flags)
# APPLE LOCAL begin optimization pragmas 3124235/3420242
	if (flags ~ "PerFunc") {
	    if (flags ~ "VarUint") {
		return "&cl_pf_opts.fld_" name
	    } else {
		return "0"
	    }
	}
# APPLE LOCAL end optimization pragmas 3124235/3420242
	if (name == "")
		return "0"
	else
		return "&" name
}
# APPLE LOCAL begin optimization pragmas 3124235/3420242
# Given that an option has flags FLAGS, return an initializer for the
# "access_flag" field of its cl_options[] entry.  This applies only to
# PerFunc VarUint things (bitfields) at the moment.
function access_ref(flags)
{
	name = var_name(flags)
	if (flags !~ "PerFunc") {
	    return "0"
	}
	if (flags ~ "VarUint") {
	    return "0"
	}
	if (name != "")
		return "cl_opt_access_func_" name
	return "0"
}
# APPLE LOCAL end optimization pragmas 3124235/3420242