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Diffstat (limited to '3rdParty/Boost/src/boost/spirit/home/lex/lexer/lexertl/semantic_action_data.hpp')
-rw-r--r--3rdParty/Boost/src/boost/spirit/home/lex/lexer/lexertl/semantic_action_data.hpp121
1 files changed, 121 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/spirit/home/lex/lexer/lexertl/semantic_action_data.hpp b/3rdParty/Boost/src/boost/spirit/home/lex/lexer/lexertl/semantic_action_data.hpp
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+++ b/3rdParty/Boost/src/boost/spirit/home/lex/lexer/lexertl/semantic_action_data.hpp
@@ -0,0 +1,121 @@
+// Copyright (c) 2001-2011 Hartmut Kaiser
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#if !defined(BOOST_SPIRIT_LEX_LEXER_SEMANTIC_ACTION_DATA_JUN_10_2009_0417PM)
+#define BOOST_SPIRIT_LEX_LEXER_SEMANTIC_ACTION_DATA_JUN_10_2009_0417PM
+
+#if defined(_MSC_VER)
+#pragma once
+#endif
+
+#include <boost/spirit/home/lex/lexer/pass_flags.hpp>
+#include <boost/mpl/bool.hpp>
+#include <boost/function.hpp>
+#include <vector>
+
+namespace boost { namespace spirit { namespace lex { namespace lexertl
+{
+ namespace detail
+ {
+ ///////////////////////////////////////////////////////////////////////
+ template <typename Iterator, typename SupportsState, typename Data>
+ struct semantic_actions;
+
+ // This specialization of semantic_actions will be used if the token
+ // type (lexer definition) does not support states, which simplifies
+ // the data structures used to store the semantic action function
+ // objects.
+ template <typename Iterator, typename Data>
+ struct semantic_actions<Iterator, mpl::false_, Data>
+ {
+ typedef void functor_type(Iterator&, Iterator&
+ , BOOST_SCOPED_ENUM(pass_flags)&, std::size_t&, Data&);
+ typedef boost::function<functor_type> functor_wrapper_type;
+
+ // add a semantic action function object
+ template <typename F>
+ void add_action(std::size_t unique_id, std::size_t, F act)
+ {
+ if (actions_.size() <= unique_id)
+ actions_.resize(unique_id + 1);
+
+ actions_[unique_id] = act;
+ }
+
+ // try to invoke a semantic action for the given token (unique_id)
+ BOOST_SCOPED_ENUM(pass_flags) invoke_actions(std::size_t /*state*/
+ , std::size_t& id, std::size_t unique_id, Iterator& end
+ , Data& data) const
+ {
+ // if there is nothing to invoke, continue with 'match'
+ if (unique_id >= actions_.size() || !actions_[unique_id])
+ return pass_flags::pass_normal;
+
+ // Note: all arguments might be changed by the invoked semantic
+ // action
+ BOOST_SCOPED_ENUM(pass_flags) match = pass_flags::pass_normal;
+ actions_[unique_id](data.get_first(), end, match, id, data);
+ return match;
+ }
+
+ std::vector<functor_wrapper_type> actions_;
+ };
+
+ // This specialization of semantic_actions will be used if the token
+ // type (lexer definition) needs to support states, resulting in a more
+ // complex data structure needed for storing the semantic action
+ // function objects.
+ template <typename Iterator, typename Data>
+ struct semantic_actions<Iterator, mpl::true_, Data>
+ {
+ typedef void functor_type(Iterator&, Iterator&
+ , BOOST_SCOPED_ENUM(pass_flags)&, std::size_t&, Data&);
+ typedef boost::function<functor_type> functor_wrapper_type;
+
+ // add a semantic action function object
+ template <typename F>
+ void add_action(std::size_t unique_id, std::size_t state, F act)
+ {
+ if (actions_.size() <= state)
+ actions_.resize(state + 1);
+
+ std::vector<functor_wrapper_type>& actions (actions_[state]);
+ if (actions.size() <= unique_id)
+ actions.resize(unique_id + 1);
+
+ actions[unique_id] = act;
+ }
+
+ // try to invoke a semantic action for the given token (unique_id)
+ BOOST_SCOPED_ENUM(pass_flags) invoke_actions(std::size_t state
+ , std::size_t& id, std::size_t unique_id, Iterator& end
+ , Data& data) const
+ {
+ // if there is no action defined for this state, return match
+ if (state >= actions_.size())
+ return pass_flags::pass_normal;
+
+ // if there is nothing to invoke, continue with 'match'
+ std::vector<functor_wrapper_type> const& actions = actions_[state];
+ if (unique_id >= actions.size() || !actions[unique_id])
+ return pass_flags::pass_normal;
+
+ // set token value
+ data.set_end(end);
+
+ // Note: all arguments might be changed by the invoked semantic
+ // action
+ BOOST_SCOPED_ENUM(pass_flags) match = pass_flags::pass_normal;
+ actions[unique_id](data.get_first(), end, match, id, data);
+ return match;
+ }
+
+ std::vector<std::vector<functor_wrapper_type> > actions_;
+ };
+ }
+
+}}}}
+
+#endif