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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-nl.c --- Output of non local name list ADT objects.

 *

 ** Author: Steve Folkes <smf@hermes.mod.uk>

 *

 *** Commentary:

 *

 * This file implements the non local name list output routines used by SID.

 *

 *** Change Log:

 * $Log: c-out-nl.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  09:56:34  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  16:04:20  smf

 * Initial import of SID 1.8 non shared files.

 *

**/

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

#include "c-out-nl.h"

#include "action.h"

#include "c-code.h"

#include "c-out-key.h"

#include "c-out-types.h"

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

typedef struct NonLocalClosureT {

    COutputInfoP	info;

    SaveRStackP		state;

    unsigned		indent;

} NonLocalClosureT, *NonLocalClosureP;

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

static void

c_output_save_non_locals_1 PROTO_N ((info, non_local, non_local_state, rstack,

				     handler_rule, table, indent))

			   PROTO_T (COutputInfoP   info X

				    NonLocalEntryP non_local X

				    SaveRStackP    non_local_state X

				    RStackP        rstack X

				    RuleP          handler_rule X

				    TableP         table X

				    unsigned       indent)

{

    OStreamP ostream = c_out_info_ostream (info);

    EntryP   entry   = non_local_entry_get_initialiser (non_local);

    if (entry) {

	EntryP      type;

	BoolT       reference;

	EntryP      translation = rstack_get_translation (non_local_state,

							  non_local->name,

							  &type,

							  &reference);

	KeyP        key         = entry_key (entry);

	ActionP     action      = entry_get_action (entry);

	TypeTupleP  param       = action_param (action);

	CCodeP      code        = action_get_code (action);

	BoolT       copies;

	TypeTupleT  args;

	TypeTupleT  result_args;

	SaveRStackT state;

	c_output_key_message (info, "/* BEGINNING OF INITIALISER: ", key,

			      " */", indent);

	c_output_open (info, indent);

	rstack_save_state (rstack, &state);

	rstack_push_frame (rstack);

	types_init (&args);

	if (!types_equal_zero_tuple (param)) {

	    types_add_name_and_type (&args, translation, type, reference);

	}

	types_init (&result_args);

	types_add_name_and_type (&result_args, non_local->name, type, FALSE);

	copies = c_output_required_copies (info, c_code_param (code),

					   &args, rstack, &state,

					   indent + C_INDENT_STEP, table);

	if (copies) {

	    c_output_open (info, indent + C_INDENT_STEP);

	}

	rstack_save_state (rstack, &state);

	c_output_location (info, c_code_file (code), c_code_line (code));

	c_output_c_code_action (info, code, &args, &result_args, &state,

				handler_rule);

	c_output_location (info, ostream_name (ostream),

			   ostream_line (ostream) + 1);

	rstack_pop_frame (rstack);

	if (copies) {

	    c_output_close (info, indent + C_INDENT_STEP);

	}

	c_output_close (info, indent);

	c_output_key_message (info, "/* END OF INITIALISER: ", key, " */",

			      indent);

	types_destroy (&result_args);

	types_destroy (&args);

    }

}

static void

c_output_restore_non_locals_1 PROTO_N ((from, to, gclosure))

			      PROTO_T (EntryP   from X

				       EntryP   to X

				       GenericP gclosure)

{

    NonLocalClosureP closure = (NonLocalClosureP) gclosure;

    COutputInfoP     info    = closure->info;

    SaveRStackP      state   = closure->state;

    unsigned         indent  = closure->indent;

    c_output_assign (info, to, from, state, state, indent);

}

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

void

c_output_non_locals PROTO_N ((info, non_locals))

		    PROTO_T (COutputInfoP  info X

			     NonLocalListP non_locals)

{

    OStreamP       ostream = c_out_info_ostream (info);

    NonLocalEntryP non_local;

    for (non_local = non_locals->head; non_local;

	 non_local = non_local->next) {

	if (!c_out_info_get_split (info)) {

	    write_cstring (ostream, "static ");

	}

	c_output_mapped_key (info, non_local->type);

	write_char (ostream, ' ');

	c_output_mapped_key (info, non_local->name);

	write_char (ostream, ';');

	write_newline (ostream);

    }

}

void

c_output_declare_non_locals PROTO_N ((info, non_locals))

			    PROTO_T (COutputInfoP  info X

				     NonLocalListP non_locals)

{

    OStreamP       ostream = c_out_info_ostream (info);

    NonLocalEntryP non_local;

    for (non_local = non_locals->head; non_local;

	 non_local = non_local->next) {

	write_cstring (ostream, "extern ");

	c_output_mapped_key (info, non_local->type);

	write_char (ostream, ' ');

	c_output_mapped_key (info, non_local->name);

	write_char (ostream, ';');

	write_newline (ostream);

    }

}

void

c_output_save_non_locals PROTO_N ((info, rule, indent, rstack, non_local_stack,

				   handler_rule, table))

			 PROTO_T (COutputInfoP info X

				  RuleP        rule X

				  unsigned     indent X

				  RStackP      rstack X

				  RStackP      non_local_stack X

				  RuleP        handler_rule X

				  TableP       table)

{

    OStreamP       ostream    = c_out_info_ostream (info);

    NStringP       in_prefix  = c_out_info_in_prefix (info);

    NonLocalListP  non_locals = rule_non_locals (rule);

    NonLocalEntryP non_local;

    SaveRStackT    state;

    SaveRStackT    non_local_state;

    for (non_local = non_locals->head; non_local;

	 non_local = non_local->next) {

	EntryP entry = table_add_generated_name (table);

	output_indent (c_out_info_info (info), indent);

	c_output_mapped_key (info, non_local->type);

	write_char (ostream, ' ');

	c_output_key (info, entry_key (entry), in_prefix);

	write_newline (ostream);

	rstack_add_translation (non_local_stack, non_local->name, entry,

				non_local->type, FALSE);

	rstack_add_translation (rstack, entry, entry, non_local->type, FALSE);

    }

    write_newline (ostream);

    rstack_save_state (rstack, &state);

    rstack_save_state (non_local_stack, &non_local_state);

    for (non_local = non_locals->head; non_local;

	 non_local = non_local->next) {

	EntryP type;

	BoolT  reference;

	EntryP entry = rstack_get_translation (&non_local_state,

					       non_local->name, &type,

					       &reference);

	ASSERT ((entry != NIL (EntryP)) && (type == non_local->type) &&

		(!reference));

	c_output_assign (info, non_local->name, entry, &state, &state, indent);

    }

    for (non_local = non_locals->head; non_local;

	 non_local = non_local->next) {

	c_output_save_non_locals_1 (info, non_local, &non_local_state,

				    rstack, handler_rule, table, indent);

    }

    rstack_save_state (non_local_stack, rule_non_local_state (rule));

}

void

c_output_restore_non_locals PROTO_N ((info, rule, indent, rstack,

				      non_local_stack))

			    PROTO_T (COutputInfoP info X

				     RuleP        rule X

				     unsigned     indent X

				     RStackP      rstack X

				     RStackP      non_local_stack)

{

    NonLocalClosureT closure;

    SaveRStackT      state;

    rstack_save_state (rstack, &state);

    closure.info   = info;

    closure.state  = &state;

    closure.indent = indent;

    rstack_apply_for_non_locals (non_local_stack, rule_non_local_state (rule),

				 c_output_restore_non_locals_1,

				 (GenericP) &closure);

}

/*

 * Local variables(smf):

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

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

 * end:

**/