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/*

    		 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.

*/

/*** 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.

 *

 *** Change Log:

 * $Log: c-out-key.c,v $

 * Revision 1.1.1.1  1998/01/17  15:57:43  release

 * First version to be checked into rolling release.

 *

 * Revision 1.2  1994/12/15  09:56:31  smf

 * Brought into line with OSSG C Coding Standards Document, as per

 * "CR94_178.sid+tld-update".

 *

 * Revision 1.1.1.1  1994/07/25  16:04:19  smf

 * Initial import of SID 1.8 non shared files.

 *

**/

/****************************************************************************/

#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 PROTO_N ((ostream, contents, length))

	    PROTO_T (OStreamP ostream X

		     CStringP contents X

		     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 PROTO_N ((info, entry))

		    PROTO_T (COutputInfoP info X

			     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 PROTO_N ((info, key, prefix))

	     PROTO_T (COutputInfoP info X

		      KeyP         key X

		      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 PROTO_N ((info, key, label))

		   PROTO_T (COutputInfoP info X

			    KeyP         key X

			    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));

    }

}

/*

 * Local variables(smf):

 * eval: (include::add-path-entry "../os-interface" "../library")

 * eval: (include::add-path-entry "../transforms" "../output" "../generated")

 * end:

**/