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/* lex.h -- Public #include File (module.h template V1.0)
Copyright (C) 1995 Free Software Foundation, Inc.
Contributed by James Craig Burley (burley@gnu.ai.mit.edu).
This file is part of GNU Fortran.
GNU Fortran is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU Fortran is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU Fortran; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA.
Owning Modules:
lex.c
Modifications:
22-Aug-89 JCB 1.1
Change for new ffewhere interface.
*/
/* Allow multiple inclusion to work. */
#ifndef _H_f_lex
#define _H_f_lex
/* Simple definitions and enumerations. */
typedef enum
{
FFELEX_typeNONE,
FFELEX_typeCOMMENT,
FFELEX_typeEOS,
FFELEX_typeEOF,
FFELEX_typeERROR,
FFELEX_typeRAW,
FFELEX_typeQUOTE,
FFELEX_typeDOLLAR,
FFELEX_typeHASH,
FFELEX_typePERCENT,
FFELEX_typeAMPERSAND,
FFELEX_typeAPOSTROPHE,
FFELEX_typeOPEN_PAREN,
FFELEX_typeCLOSE_PAREN,
FFELEX_typeASTERISK,
FFELEX_typePLUS,
FFELEX_typeMINUS,
FFELEX_typePERIOD,
FFELEX_typeSLASH,
FFELEX_typeNUMBER, /* Grep: [0-9][0-9]*. */
FFELEX_typeOPEN_ANGLE,
FFELEX_typeEQUALS,
FFELEX_typeCLOSE_ANGLE,
FFELEX_typeNAME, /* Grep: [A-Za-z][A-Za-z0-9_]*. */
FFELEX_typeCOMMA,
FFELEX_typePOWER, /* "**". */
FFELEX_typeCONCAT, /* "//". */
FFELEX_typeDEBUG,
FFELEX_typeNAMES, /* Same as FFELEX_typeNAME in initial
context. */
FFELEX_typeHOLLERITH, /* <text> part of <nn>H<text>. */
FFELEX_typeCHARACTER, /* <text> part of '<text>' or "<text>". */
FFELEX_typeCOLON,
FFELEX_typeSEMICOLON,
FFELEX_typeUNDERSCORE,
FFELEX_typeQUESTION,
FFELEX_typeOPEN_ARRAY, /* "(/". */
FFELEX_typeCLOSE_ARRAY, /* "/)". */
FFELEX_typeCOLONCOLON, /* "::". */
FFELEX_typeREL_LE, /* "<=". */
FFELEX_typeREL_NE, /* "<>". */
FFELEX_typeREL_EQ, /* "==". */
FFELEX_typePOINTS, /* "=>". */
FFELEX_typeREL_GE, /* ">=". */
FFELEX_type
} ffelexType;
/* Typedefs. */
typedef struct _lextoken_ *ffelexToken;
typedef void *lex_sigh_;
typedef lex_sigh_ (*lex_sigh__) (ffelexToken);
typedef lex_sigh__ (*ffelexHandler) (ffelexToken);
/* Include files needed by this one. */
#include <ctype.h>
#include "top.h"
#include "where.h"
/* Structure definitions. */
struct _lextoken_
{
long int id_; /* DEBUG ONLY. */
ffeTokenLength size;
ffeTokenLength length;
unsigned short uses;
char *text;
ffelexType type;
ffewhereLine where_line;
ffewhereColumn where_col;
ffewhereLine currentnames_line; /* For tracking NAMES tokens. */
ffewhereColumn currentnames_col; /* For tracking NAMES tokens. */
ffewhereTrack wheretrack; /* For tracking NAMES tokens. */
};
/* Global objects accessed by users of this module. */
/* Declare functions with prototypes. */
void ffelex_display_token (ffelexToken t);
bool ffelex_expecting_character (void);
ffelexHandler ffelex_file_fixed (ffewhereFile wf, FILE *f);
ffelexHandler ffelex_file_free (ffewhereFile wf, FILE *f);
void ffelex_hash_kludge (FILE *f);
void ffelex_init_1 (void);
bool ffelex_is_names_expected (void);
char *ffelex_line (void);
ffewhereColumnNumber ffelex_line_length (void);
ffewhereLineNumber ffelex_line_number (void);
void ffelex_set_expecting_hollerith (long length, char which,
ffewhereLine line,
ffewhereColumn column);
void ffelex_set_handler (ffelexHandler first);
void ffelex_set_hexnum (bool on);
void ffelex_set_include (ffewhereFile wf, bool free_form, FILE *fi);
void ffelex_set_names (bool on);
void ffelex_set_names_pure (bool on);
ffelexHandler ffelex_splice_tokens (ffelexHandler first, ffelexToken master,
ffeTokenLength start);
ffelexHandler ffelex_swallow_tokens (ffelexToken t, ffelexHandler handler);
ffelexToken ffelex_token_dollar_from_names (ffelexToken t,
ffeTokenLength start);
void ffelex_token_kill (ffelexToken t);
ffelexToken ffelex_token_name_from_names (ffelexToken t,
ffeTokenLength start,
ffeTokenLength len);
ffelexToken ffelex_token_names_from_names (ffelexToken t,
ffeTokenLength start,
ffeTokenLength len);
ffelexToken ffelex_token_new (void);
ffelexToken ffelex_token_new_character (char *s, ffewhereLine l,
ffewhereColumn c);
ffelexToken ffelex_token_new_eof (void);
ffelexToken ffelex_token_new_name (char *s, ffewhereLine l,
ffewhereColumn c);
ffelexToken ffelex_token_new_names (char *s, ffewhereLine l,
ffewhereColumn c);
ffelexToken ffelex_token_new_number (char *s, ffewhereLine l,
ffewhereColumn c);
ffelexToken ffelex_token_new_simple_ (ffelexType type, ffewhereLine l,
ffewhereColumn c);
ffelexToken ffelex_token_number_from_names (ffelexToken t,
ffeTokenLength start);
ffelexToken ffelex_token_uscore_from_names (ffelexToken t,
ffeTokenLength start);
ffelexToken ffelex_token_use (ffelexToken t);
/* Define macros. */
#define ffelex_init_0()
#define ffelex_init_2()
#define ffelex_init_3()
#define ffelex_init_4()
#define ffelex_is_firstnamechar(c) \
(isalpha ((c)) || ((c) == '_'))
#define ffelex_terminate_0()
#define ffelex_terminate_1()
#define ffelex_terminate_2()
#define ffelex_terminate_3()
#define ffelex_terminate_4()
#define ffelex_token_length(t) ((t)->length)
#define ffelex_token_new_eos(l,c) \
ffelex_token_new_simple_ (FFELEX_typeEOS, (l), (c))
#define ffelex_token_new_period(l,c) \
ffelex_token_new_simple_ (FFELEX_typePERIOD, (l), (c))
#define ffelex_token_strcmp(t1,t2) strcmp ((t1)->text, (t2)->text)
#define ffelex_token_text(t) ((t)->text)
#define ffelex_token_type(t) ((t)->type)
#define ffelex_token_where_column(t) ((t)->where_col)
#define ffelex_token_where_filename(t) \
ffewhere_line_filename ((t)->where_line)
#define ffelex_token_where_filelinenum(t) \
ffewhere_line_filelinenum((t)->where_line)
#define ffelex_token_where_line(t) ((t)->where_line)
#define ffelex_token_where_line_number(t) \
ffewhere_line_number ((t)->where_line)
#define ffelex_token_wheretrack(t) ((t)->wheretrack)
/* End of #include file. */
#endif
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