--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/pt-misc.h	Wed Aug 03 20:06:54 1994 +0000
@@ -0,0 +1,325 @@
+// tree-misc.h                                      -*- C++ -*-
+/*
+
+Copyright (C) 1992, 1993, 1994 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_tree_misc_h)
+#define octave_tree_misc_h 1
+
+#if defined (__GNUG__)
+#pragma interface
+#endif
+
+class Octave_object;
+class tree_constant;
+class tree_command;
+class tree_expression;
+class tree_simple_assignment_expression;
+class tree_identifier;
+class symbol_record;
+class symbol_table;
+
+class tree_statement;
+class tree_statement_list;
+class tree_argument_list;
+class tree_parameter_list;
+class tree_return_list;
+class tree_global;
+class tree_global_init_list;
+
+#include <SLList.h>
+
+#include "tree-base.h"
+#include "tree-expr.h"
+#include "tree-cmd.h"
+
+// A list of expressions and commands to be executed.
+
+class
+tree_statement
+{
+friend class tree_statement_list;
+
+public:
+  tree_statement (void)
+    {
+      command = 0;
+      expression = 0;
+      print_flag = 1;
+    }
+
+  tree_statement (tree_command *c)
+    {
+      command = c;
+      expression = 0;
+      print_flag = 1;
+    }
+
+  tree_statement (tree_expression *e)
+    {
+      command = 0;
+      expression = e;
+      print_flag = 1;
+    }
+
+  ~tree_statement (void);
+
+  void set_print_flag (int print)
+    { print_flag = print; }
+
+private:
+  tree_command *command;	// Command to execute.
+  tree_expression *expression;	// Command to execute.
+  int print_flag;		// Print result of eval for this command?
+};
+
+class
+tree_statement_list : public SLList<tree_statement *>
+{
+public:
+  tree_statement_list (void) : SLList<tree_statement *> () { }
+  tree_statement_list (tree_statement *s) : SLList<tree_statement *> ()
+    { append (s); }
+
+  ~tree_statement_list (void)
+    {
+      while (! empty ())
+	{
+	  tree_statement *t = remove_front ();
+	  delete t;
+	}
+    }
+
+  tree_constant eval (int print);
+};
+
+// Argument lists.  Used to hold the list of expressions that are the
+// arguments in a function call or index expression.
+
+class
+tree_argument_list : public SLList<tree_expression *>
+{
+public:
+  tree_argument_list (void) : SLList<tree_expression *> () { }
+  tree_argument_list (tree_expression *t) : SLList<tree_expression *> ()
+    { append (t); }
+
+  ~tree_argument_list (void)
+    {
+      while (! empty ())
+	{
+	  tree_expression *t = remove_front ();
+	  delete t;
+	}
+    }
+
+  Octave_object convert_to_const_vector (void);
+};
+
+// Parameter lists.  Used to hold the list of input and output
+// parameters in a function definition.  Elements are identifiers
+// only.
+
+class
+tree_parameter_list : public SLList<tree_identifier *>
+{
+public:
+  tree_parameter_list (void) : SLList<tree_identifier *> () { }
+  tree_parameter_list (tree_identifier *t) : SLList<tree_identifier *> ()
+    { append (t); }
+
+  ~tree_parameter_list (void)
+    {
+      while (! empty ())
+	{
+	  tree_identifier *t = remove_front ();
+	  delete t;
+	}
+    }
+
+//  char *name (void) const;
+
+  void mark_as_formal_parameters (void);
+
+  void mark_varargs (void)
+    { marked_for_varargs = 1; }
+
+  int takes_varargs (void) const
+    { return marked_for_varargs; }
+
+  void mark_varargs_only (void)
+    { marked_for_varargs = -1; }
+
+  int varargs_only (void)
+    { return (marked_for_varargs < 0); }
+
+  void define_from_arg_vector (const Octave_object& args);
+
+  int is_defined (void);
+
+  Octave_object convert_to_const_vector (void);
+
+private:
+  int marked_for_varargs;
+};
+
+// Return lists.  Used to hold the right hand sides of multiple
+// assignment expressions.
+
+class
+tree_return_list : public SLList<tree_index_expression *>
+{
+public:
+  tree_return_list (void) : SLList<tree_index_expression *> () { }
+  tree_return_list (tree_index_expression *t)
+    : SLList<tree_index_expression *> ()
+      { append (t); }
+
+  ~tree_return_list (void)
+    {
+      while (! empty ())
+	{
+	  tree_index_expression *t = remove_front ();
+	  delete t;
+	}
+    }
+};
+
+// List of expressions that make up a global statement.
+
+class
+tree_global
+{
+public:
+  tree_global (void)
+    {
+      ident = 0;
+      assign_expr = 0;
+    }
+
+  tree_global (tree_identifier *id)
+    {
+      ident = id;
+      assign_expr = 0;
+    }
+
+  tree_global (tree_simple_assignment_expression *ass)
+    {
+      ident = 0;
+      assign_expr = ass;
+    }
+
+  ~tree_global (void)
+    {
+      delete ident;
+      delete assign_expr;
+    }
+
+  void eval (void);
+
+private:
+  tree_identifier *ident;
+  tree_simple_assignment_expression *assign_expr;
+};
+
+class
+tree_global_init_list : public SLList<tree_global *>
+{
+public:
+  tree_global_init_list (void) : SLList<tree_global *> () { }
+  tree_global_init_list (tree_global *t) : SLList<tree_global *> ()
+    { append (t); }
+
+  ~tree_global_init_list (void)
+    {
+      while (! empty ())
+	{
+	  tree_global *t = remove_front ();
+	  delete t;
+	}
+    }
+
+  void eval (void);
+};
+
+class
+tree_if_clause
+{
+public:
+  tree_if_clause (void)
+    {
+      expr = 0;
+      list = 0;
+    }
+
+  tree_if_clause (tree_statement_list *l)
+    {
+      expr = 0;
+      list = l;
+    }
+
+  tree_if_clause (tree_expression *e, tree_statement_list *l)
+    {
+      expr = e;
+      list = l;
+    }
+
+  ~tree_if_clause (void)
+    {
+      delete expr;
+      delete list;
+    }
+
+  int eval (void);
+
+private:
+  tree_expression *expr;
+  tree_statement_list *list;
+};
+
+class
+tree_if_command_list : public SLList<tree_if_clause *>
+{
+public:
+  tree_if_command_list (void) : SLList<tree_if_clause *> () { }
+  tree_if_command_list (tree_if_clause *t) : SLList<tree_if_clause *> ()
+    { append (t); }
+
+  ~tree_if_command_list (void)
+    {
+      while (! empty ())
+	{
+	  tree_if_clause *t = remove_front ();
+	  delete t;
+	}
+    }
+
+  void eval (void);
+};
+
+#endif
+
+/*
+;;; Local Variables: ***
+;;; mode: C++ ***
+;;; page-delimiter: "^/\\*" ***
+;;; End: ***
+*/