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/*
 * (c) Thomas Pornin 1999 - 2002
 *
 * 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, 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.
 * 4. The name of the authors may not be used to endorse or promote
 *    products derived from this software without specific prior written
 *    permission.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT 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 AUTHORS OR CONTRIBUTORS 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.
 *
 */

#ifndef UCPP__UCPPI__
#define UCPP__UCPPI__

#include "tune.h"
#include "cpp.h"
#include "nhash.h"
#include "reent.h"

/*
 * A macro represented in a compact form; simple tokens are represented
 * by one byte, containing their number. Tokens with a string value are
 * followed by the value (string finished by a 0). Macro arguments are
 * followed by the argument number (in one byte -- thus implying a hard
 * limit of 254 arguments (number 255 is for __VA_ARGS__).
 */
struct comp_token_fifo {
	size_t length;
	size_t rp;
	unsigned char *t;
};

/* These declarations are used only internally by ucpp */

/*
 * S_TOKEN(x)	checks whether x is a token type with an embedded string
 * ttMWS(x)	checks whether x is macro whitespace (space, comment...)
 * ttWHI(x)	checks whether x is whitespace (MWS or newline)
 */
#define S_TOKEN(x)	STRING_TOKEN(x)
#define ttMWS(x)	((x) == NONE || (x) == COMMENT || (x) == OPT_NONE)
#define ttWHI(x)	(ttMWS(x) || (x) == NEWLINE)

/*
 * Function prototypes
 */
/*
 * from lexer.c
 */
#define init_cppm		UCPP_PRIVATE(init_cppm)
#define put_char		UCPP_PRIVATE(put_char)
#define discard_char		UCPP_PRIVATE(discard_char)
#define next_token		UCPP_PRIVATE(next_token)
#define grap_char		UCPP_PRIVATE(grap_char)
#define space_char		UCPP_PRIVATE(space_char)

void init_cppm(pCPP);
void put_char(pCPP_ struct lexer_state *, unsigned char);
void discard_char(pCPP_ struct lexer_state *);
int next_token(pCPP_ struct lexer_state *);
int grap_char(pCPP_ struct lexer_state *);
int space_char(int);

#ifdef UCPP_REENTRANT
#define new_cppm		UCPP_PRIVATE(new_cppm)
#define del_cppm		UCPP_PRIVATE(del_cppm)
CPPM new_cppm(void);
void del_cppm(CPPM);
#endif

#ifdef UCPP_CLONE
#define clone_cppm		UCPP_PRIVATE(clone_cppm)
CPPM clone_cppm(const CPPM);
#endif

/*
 * from assert.c
 */
struct assert {
	hash_item_header head;    /* first field */
	size_t nbval;
	struct token_fifo *val;
};