Imported Upstream version 0.26.0

extern/shiny/Main/Preprocessor.hpp

@@ -0,0 +1,69 @@
+#ifndef SH_PREPROCESSOR_H
+#define SH_PREPROCESSOR_H
+
+#include <string>
+#include <vector>
+
+#include <cstdio>
+#include <ostream>
+#include <string>
+#include <algorithm>
+
+#include <boost/assert.hpp>
+#include <boost/config.hpp>
+
+#include <boost/wave/cpp_throw.hpp>
+#include <boost/wave/cpp_exceptions.hpp>
+#include <boost/wave/token_ids.hpp>
+#include <boost/wave/util/macro_helpers.hpp>
+#include <boost/wave/preprocessing_hooks.hpp>
+
+namespace sh
+{
+	/**
+	 * @brief A simple interface for the boost::wave preprocessor
+	 */
+	class Preprocessor
+	{
+	public:
+		/**
+		 * @brief Run a shader source string through the preprocessor
+		 * @param source source string
+		 * @param includePath path to search for includes (that are included with #include)
+		 * @param definitions macros to predefine (vector of strings of the format MACRO=value, or just MACRO to define it as 1)
+		 * @param name name to use for error messages
+		 * @return processed string
+		 */
+		static std::string preprocess (std::string source, const std::string& includePath, std::vector<std::string> definitions, const std::string& name);
+	};
+
+
+
+	class emit_custom_line_directives_hooks
+	:   public boost::wave::context_policies::default_preprocessing_hooks
+	{
+	public:
+
+		template <typename ContextT, typename ContainerT>
+		bool
+		emit_line_directive(ContextT const& ctx, ContainerT &pending,
+			typename ContextT::token_type const& act_token)
+		{
+		// emit a #line directive showing the relative filename instead
+		typename ContextT::position_type pos = act_token.get_position();
+		unsigned int column = 1;
+
+			typedef typename ContextT::token_type result_type;
+
+			// no line directives for now
+			pos.set_column(column);
+			pending.push_back(result_type(boost::wave::T_GENERATEDNEWLINE, "\n", pos));
+
+			return true;
+		}
+	};
+
+
+}
+
+#endif