JIT compile anonymous functions * jit-ir.h (jit_block::front, jit_block::back): New function. (jit_call::jit_call): New overloads. (jit_return): New class. * jit-typeinfo.cc (octave_jit_create_undef): New function. (jit_operation::to_idx): Correctly handle empty type vector. (jit_typeinfo::jit_typeinfo): Add destroy_fn and initialize create_undef. * jit-typeinfo.h (jit_typeinfo::get_any_ptr, jit_typeinfo::destroy, jit_typeinfo::create_undef): New function. * pt-jit.cc (jit_convert::jit_convert): Add overload and refactor. (jit_convert::initialize, jit_convert_llvm::convert_loop, jit_convert_llvm::convert_function, tree_jit::do_execute, jit_function_info::jit_function_info, jit_function_info::execute, jit_function_info::match): New function. (jit_convert::get_variable): Support function variable lookup. (jit_convert_llvm::convert): Handle loop/function agnostic stuff. (jit_convert_llvm::visit): Handle function creation as well. (tree_jit::execute): Move implementation to tree_jit::do_execute. (jit_info::compile): Call convert_loop instead of convert. * pt-jit.h (jit_convert::jit_convert): New overload. (jit_convert::initialize, jit_convert_llvm::convert_loop, jit_convert_llvm::convert_function, tree_jit::do_execute): New function. (jit_convert::create_variable, jit_convert_llvm::initialize): Update signature. (tree_jit::execute): Made static. (tree_jit::tree_jit): Made private. (jit_function_info): New class. * ov-usr-fcn.cc (octave_user_function::~octave_user_function): Delete jit_info. (octave_user_function::octave_user_function): Maybe JIT and use is_special_expr and special_expr. (octave_user_function::special_expr): New function. * ov-usr-fcn.h (octave_user_function::is_special_expr, octave_user_function::special_expr, octave_user_function::get_info, octave_user_function::stash_info): New function. * pt-decl.h (tree_decl_elt::name): New function. * pt-eval.cc (tree_evaluator::visit_simple_for_command, tree_evaluator::visit_while_command): Use static tree_jit methods.

/*

Copyright (C) 1996-2012 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 3 of the License, 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, see
<http://www.gnu.org/licenses/>.

*/

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <iostream>
#include <string>

#include "error.h"
#include "pager.h"
#include "oct-lvalue.h"
#include "ov.h"
#include "pt-exp.h"

// Expressions.

bool
tree_expression::is_logically_true (const char *warn_for)
{
  bool expr_value = false;

  octave_value t1 = rvalue1 ();

  if (! error_state)
    {
      if (t1.is_defined ())
        return t1.is_true ();
      else
        ::error ("%s: undefined value used in conditional expression",
                 warn_for);
    }

  return expr_value;
}

octave_value
tree_expression::rvalue1 (int)
{
  ::error ("invalid rvalue function called in expression");
  return octave_value ();
}

octave_value_list
tree_expression::rvalue (int)
{
  ::error ("invalid rvalue function called in expression");
  return octave_value_list ();
}

octave_value_list
tree_expression::rvalue (int nargout, const std::list<octave_lvalue> *)
{
  return rvalue (nargout);
}

octave_lvalue
tree_expression::lvalue (void)
{
  ::error ("invalid lvalue function called in expression");
  return octave_lvalue ();
}

std::string
tree_expression::original_text (void) const
{
  return std::string ();
}