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parse.h
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1996-09-28
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3KB
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107 lines
// parse.h -*- C++ -*-
/*
Copyright (C) 1992, 1993, 1994, 1995 John W. Eaton
This file is part of Octave.
Octave 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.
Octave 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 Octave; see the file COPYING. If not, write to the Free
Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#if !defined (octave_parse_h)
#define octave_parse_h 1
#include "SLStack.h"
extern void discard_until (char c);
extern void reset_parser (void);
extern int yylex (void);
extern int yyparse (void);
class tree;
class tree_matrix;
class tree_identifier;
class symbol_table;
// Nonzero means we're in the middle of defining a function.
extern int defining_func;
// Nonzero means we're in the middle of defining a loop.
extern int looping;
// Nonzero means we're in the middle of defining a conditional expression.
extern int iffing;
// Nonzero means we need to do some extra lookahead to avoid being
// screwed by bogus function syntax.
extern int maybe_screwed;
// Nonzero means we need to do some extra lookahead to avoid being
// screwed by bogus function syntax.
extern int maybe_screwed_again;
// Temporary symbol table pointer used to cope with bogus function syntax.
extern symbol_table *tmp_local_sym_tab;
// Stack to hold list of literal matrices.
extern SLStack <tree_matrix *> ml;
// A nonzero element corresponding to an element of ml means we just
// started reading a new matrix. This should probably be part of a
// new struct for matrix lists...
extern SLStack <int> mlnm;
// Nonzero means print parser debugging info (-d).
extern int yydebug;
// The current input line number.
extern int input_line_number;
// The column of the current token.
extern int current_input_column;
// Buffer for help text snagged from function files.
extern char *help_buf;
// Nonzero means we're working on a plot command.
extern int plotting;
// Nonzero means we've seen something that means we must be past the
// range part of a plot command.
extern int past_plot_range;
// Nonzero means we're looking at the range part of a plot command.
extern int in_plot_range;
// Nonzero means we're looking at the using part of a plot command.
extern int in_plot_using;
// Nonzero means we're looking at the style part of a plot command.
extern int in_plot_style;
// Nonzero means we're looking at an indirect reference to a structure
// element.
extern int looking_at_indirect_ref;
#endif
/*
;;; Local Variables: ***
;;; mode: C++ ***
;;; page-delimiter: "^/\\*" ***
;;; End: ***
*/