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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.

*/

#include "config.h"

#include "read.h"

#include "calculus.h"

#include "check.h"

#include "code.h"

#include "common.h"

#include "disk.h"

#include "error.h"

#include "lex.h"

#include "output.h"

#include "pretty.h"

#include "print.h"

#include "template.h"

#include "token.h"

#include "write.h"

#include "xalloc.h"

/*

    ACTIONS

    These macros are used to describe the various actions which the

    program can perform.

*/

#define ACTION_C		0

#define ACTION_TOKEN		1

#define ACTION_DISK		2

#define ACTION_PRETTY		3

#define ACTION_PRINT		4

#define ACTION_WRITE		5

#define ACTION_LIST		6

#define ACTION_TEMPL		7

/*

    LIST ACTION

    This is the trivial action which just prints a list of all the types

    in the algebra.

*/

static void list_action

    PROTO_N ( ( nm ) )

    PROTO_T ( char *nm )

{

    if ( streq ( nm, "." ) ) {

	output_file = stdout ;

    } else {

	output_file = fopen ( nm, "w" ) ;

	if ( output_file == NULL ) {

	    error ( ERROR_SERIOUS, "Can't open output file, '%s'", nm ) ;

	    return ;

	}

    }

    LOOP_TYPE output ( "%TT ;\n", CRT_TYPE ) ;

    flush_output () ;

    if ( output_file != stdout ) fclose_v ( output_file ) ;

    return ;

}

/*

    MAIN ROUTINE

    This is the main routine.  It processes the command-line options,

    reads the input file, and writes the output files.

*/

int main

    PROTO_N ( ( argc, argv ) )

    PROTO_T ( int argc X char **argv )

{

    int a ;

    int text = 1 ;

    int no_args = 0 ;

    int last_arg = 0 ;

    int need_alg = 1 ;

    char *in = NULL ;

    char *alg = NULL ;

    int act = ACTION_C ;

    /* Scan arguments */

    set_progname ( argv [0], "1.2" ) ;

    for ( a = 1 ; a < argc ; a++ ) {

	char *arg = argv [a] ;

	if ( arg [0] != '-' ) {

	    last_arg = a ;

	    no_args++ ;

	}

    }

    if ( no_args == 1 ) last_arg = 0 ;

    /* Process arguments */

    for ( a = 1 ; a < argc ; a++ ) {

	char *arg = argv [a] ;

	if ( arg [0] == '-' ) {

	    int known ;

	    if ( arg [1] && arg [2] ) {

		/* Multi-character options */

		known = 0 ;

		switch ( arg [1] ) {

		    case 'A' : {

			/* Output algebra name */

			alg = arg + 2 ;

			known = 1 ;

			break ;

		    }

		    case 'E' : {

			/* File containing extra types */

			if ( need_alg ) new_algebra () ;

			process_file ( arg + 2, 0 ) ;

			need_alg = 0 ;

			known = 1 ;

			break ;

		    }

		    case 'T' : {

			/* Template file */

			if ( act == ACTION_TOKEN ) token_cond = 1 ;

			in = arg + 2 ;

			act = ACTION_TEMPL ;

			known = 1 ;

			break ;

		    }

		}

	    } else {

		/* Single character options */

		known = 1 ;

		switch ( arg [1] ) {

		    /* Input flags */

		    case 'r' : text = 0 ; break ;

		    case 'i' : text = 1 ; break ;

		    /* Output flags */

		    case 'c' : act = ACTION_C ; break ;

		    case 'd' : act = ACTION_DISK ; break ;

		    case 'l' : act = ACTION_LIST ; break ;

		    case 'o' : act = ACTION_PRETTY ; break ;

		    case 'p' : act = ACTION_PRINT ; break ;

		    case 't' : act = ACTION_TOKEN ; break ;

		    case 'w' : act = ACTION_WRITE ; break ;

		    /* Output options */

		    case 'a' : extra_asserts = 1 ; break ;

		    case 'e' : extra_headers = 1 ; break ;

		    case 'm' : map_proto = 0 ; break ;

		    case 'n' : const_tokens = 0 ; break ;

		    case 'x' : allow_vec = 0 ; break ;

		    case 'z' : allow_stack = 0 ; break ;

		    /* Other options */

		    case 'q' : verbose_output = 0 ; break ;

		    case 'v' : report_version () ; break ;

		    default : known = 0 ; break ;

		}

	    }

	    if ( !known ) {

		error ( ERROR_WARNING, "Unknown option, '%s'", arg ) ;

	    }

	} else if ( a != last_arg ) {

	    if ( need_alg ) new_algebra () ;

	    if ( text ) {

		process_file ( arg, 1 ) ;

	    } else {

		read_file ( arg ) ;

	    }

	    check_types () ;

	    check_names ( 0 ) ;

	    need_alg = 1 ;

	}

    }

    if ( no_args == 0 ) error ( ERROR_FATAL, "Not enough arguments" ) ;

    if ( !need_alg ) error ( ERROR_SERIOUS, "Badly placed -E option" ) ;

    /* Look up output algebra */

    if ( alg ) {

	ALGEBRA_DEFN *al = find_algebra ( alg ) ;

	if ( al == NULL ) {

	    error ( ERROR_SERIOUS, "Algebra %s not defined", alg ) ;

	} else {

	    algebra = al ;

	}

    }

    /* Generate output */

    if ( exit_status == EXIT_SUCCESS ) {

	char *out = ( last_arg ? argv [ last_arg ] : "." ) ;

	switch ( act ) {

	    case ACTION_C : main_action_c ( out ) ; break ;

	    case ACTION_TOKEN : main_action_tok ( out ) ; break ;

	    case ACTION_DISK : disk_action ( out ) ; break ;

	    case ACTION_PRETTY : pretty_file ( out ) ; break ;

	    case ACTION_PRINT : print_action ( out ) ; break ;

	    case ACTION_WRITE : write_file ( out ) ; break ;

	    case ACTION_LIST : list_action ( out ) ; break ;

	    case ACTION_TEMPL : template_file ( in, out ) ; break ;

	}

    } else {

	error ( ERROR_FATAL, "No output generated due to previous errors" ) ;

    }

    return ( exit_status ) ;

}