diff options
Diffstat (limited to '3rdParty/Boost/src/boost/spirit/home/support/detail/lexer/parser/tree/selection_node.hpp')
-rw-r--r-- | 3rdParty/Boost/src/boost/spirit/home/support/detail/lexer/parser/tree/selection_node.hpp | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/spirit/home/support/detail/lexer/parser/tree/selection_node.hpp b/3rdParty/Boost/src/boost/spirit/home/support/detail/lexer/parser/tree/selection_node.hpp new file mode 100644 index 0000000..67e5ea0 --- /dev/null +++ b/3rdParty/Boost/src/boost/spirit/home/support/detail/lexer/parser/tree/selection_node.hpp @@ -0,0 +1,94 @@ +// selection_node.hpp +// Copyright (c) 2007-2009 Ben Hanson (http://www.benhanson.net/) +// +// Distributed under the Boost Software License, Version 1.0. (See accompanying +// file licence_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) +#ifndef BOOST_LEXER_SELECTION_NODE_HPP +#define BOOST_LEXER_SELECTION_NODE_HPP + +#include "node.hpp" + +namespace boost +{ +namespace lexer +{ +namespace detail +{ +class selection_node : public node +{ +public: + selection_node (node *left_, node *right_) : + node (left_->nullable () || right_->nullable ()), + _left (left_), + _right (right_) + { + _left->append_firstpos (_firstpos); + _right->append_firstpos (_firstpos); + _left->append_lastpos (_lastpos); + _right->append_lastpos (_lastpos); + } + + virtual ~selection_node () + { + } + + virtual type what_type () const + { + return SELECTION; + } + + virtual bool traverse (const_node_stack &node_stack_, + bool_stack &perform_op_stack_) const + { + perform_op_stack_.push (true); + + switch (_right->what_type ()) + { + case SEQUENCE: + case SELECTION: + case ITERATION: + perform_op_stack_.push (false); + break; + default: + break; + } + + node_stack_.push (_right); + node_stack_.push (_left); + return true; + } + +private: + // Not owner of these pointers... + node *_left; + node *_right; + + virtual void copy_node (node_ptr_vector &node_ptr_vector_, + node_stack &new_node_stack_, bool_stack &perform_op_stack_, + bool &down_) const + { + if (perform_op_stack_.top ()) + { + node *rhs_ = new_node_stack_.top (); + + new_node_stack_.pop (); + + node *lhs_ = new_node_stack_.top (); + + node_ptr_vector_->push_back (static_cast<selection_node *>(0)); + node_ptr_vector_->back () = new selection_node (lhs_, rhs_); + new_node_stack_.top () = node_ptr_vector_->back (); + } + else + { + down_ = true; + } + + perform_op_stack_.pop (); + } +}; +} +} +} + +#endif |