/*
 * Copyright (c) 2002-2004, The Tendra Project <http://www.ten15.org/>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice unmodified, this list of conditions, and the following
 *    disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 *
 *    		 Crown Copyright (c) 1997
 *
 *    This TenDRA(r) Computer Program is subject to Copyright
 *    owned by the United Kingdom Secretary of State for Defence
 *    acting through the Defence Evaluation and Research Agency
 *    (DERA).  It is made available to Recipients with a
 *    royalty-free licence for its use, reproduction, transfer
 *    to other parties and amendment for any purpose not excluding
 *    product development provided that any such use et cetera
 *    shall be deemed to be acceptance of the following conditions:-
 *
 *        (1) Its Recipients shall ensure that this Notice is
 *        reproduced upon any copies or amended versions of it;
 *
 *        (2) Any amended version of it shall be clearly marked to
 *        show both the nature of and the organisation responsible
 *        for the relevant amendment or amendments;
 *
 *        (3) Its onward transfer from a recipient to another
 *        party shall be deemed to be that party's acceptance of
 *        these conditions;
 *
 *        (4) DERA gives no warranty or assurance as to its
 *        quality or suitability for any purpose and DERA accepts
 *        no liability whatsoever in relation to any use to which
 *        it may be put.
 *
 * $TenDRA: tendra/src/utilities/sid/c-out-key.c,v 1.8 2004/08/09 06:59:57 bp Exp $
 */


/*** c-out-key.c --- Output of key ADT objects.
 *
 ** Author: Steve Folkes <smf@hermes.mod.uk>
 *
 *** Commentary:
 *
 * This file implements the identifier key output routines used by SID.
 */

#include "c-out-key.h"
#include "action.h"
#include "basic.h"
#include "name.h"
#include "rstack.h"
#include "rule.h"
#include "syntax.h"
#include "type.h"

/*--------------------------------------------------------------------------*/

static void
write_c_key(OStreamP ostream, char *contents, unsigned length)
{
	while (length--) {
		char c;
		
		switch (c = *contents ++) {
		case '-':
			write_cstring (ostream, "_H");
			break;
		case '_':
			write_cstring (ostream, "__");
			break;
		case ':':
			write_cstring (ostream, "_C");
			break;
		default:
			if ((syntax_is_letter (c)) || (syntax_is_digit (c))) {
				write_char (ostream, c);
			} else {
				write_cstring (ostream, "_X");
				write_unsigned (ostream, (unsigned) (unsigned char) c);
				write_char (ostream, '_');
			}
			break;
		}
	}
}

/*--------------------------------------------------------------------------*/

void
c_output_mapped_key(COutputInfoP info, EntryP entry)
{
	OStreamP ostream = c_out_info_ostream (info);
	NStringP mapping = entry_get_mapping (entry);
	BoolT    strict  = c_out_info_get_numeric_ids (info);
	
	if (mapping) {
		write_nstring (ostream, mapping);
	} else {
		KeyP     key    = entry_key (entry);
		NStringP prefix;
		
		switch (entry_type (entry)) EXHAUSTIVE {
		case ET_TYPE:
			prefix = c_out_info_type_prefix (info);
			break;
		case ET_RULE:
			prefix = c_out_info_fn_prefix (info);
			break;
		case ET_BASIC:
			prefix = c_out_info_terminal_prefix (info);
			strict = FALSE;
			break;
		case ET_NON_LOCAL:
			prefix = c_out_info_in_prefix (info);
			break;
		case ET_ACTION:
		case ET_NAME:
		case ET_RENAME:
		case ET_PREDICATE:
			UNREACHED;
		}
		write_nstring (ostream, prefix);
		if (key_is_string (key) && (!strict)) {
			NStringP nstring = key_get_string (key);
			
			write_c_key (ostream, nstring_contents (nstring),
						 nstring_length (nstring));
		} else {
			write_unsigned (ostream, key_get_number (key));
		}
	}
}

void
c_output_key(COutputInfoP info, KeyP key, NStringP prefix)
{
	OStreamP ostream = c_out_info_ostream (info);
	BoolT    strict  = c_out_info_get_numeric_ids (info);
	
	write_nstring (ostream, prefix);
	if (key_is_string (key) && (!strict)) {
		NStringP nstring = key_get_string (key);
		
		write_c_key (ostream, nstring_contents (nstring),
					 nstring_length (nstring));
	} else {
		write_unsigned (ostream, key_get_number (key));
	}
}

void
c_output_label_key(COutputInfoP info, KeyP key, unsigned label)
{
	OStreamP ostream = c_out_info_ostream (info);
	NStringP prefix  = c_out_info_label_prefix (info);
	BoolT    strict  = c_out_info_get_numeric_ids (info);
	
	write_nstring (ostream, prefix);
	write_unsigned (ostream, label);
	write_char (ostream, '_');
	if (key_is_string (key) && (!strict)) {
		NStringP nstring = key_get_string (key);
		
		write_c_key (ostream, nstring_contents (nstring),
				nstring_length (nstring));
	} else {
		write_unsigned (ostream, key_get_number (key));
	}
}
