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+// parse.h                                                 -*- C++ -*-
+/*
+
+Copyright (C) 1992, 1993 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 (_parse_h)
+#define _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;
+
+// Identifier to define if we are reading an M-fie.
+extern tree_identifier *id_to_define;
+
+// 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;
+
+#define HELP_BUF_LENGTH 8192
+
+// Buffer for help text snagged from M-files.
+extern char help_buf [HELP_BUF_LENGTH];
+
+// Nonzero means we're working on a plot command.
+extern int plotting;
+
+// 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;
+
+#endif
+
+/*
+;;; Local Variables: ***
+;;; mode: C++ ***
+;;; page-delimiter: "^/\\*" ***
+;;; End: ***
+*/