Included handler classes from master

1 files changed, 90 insertions, 0 deletions

diff --git a/src/core/parser/stack/ImportIncludeHandler.hpp b/src/core/parser/stack/ImportIncludeHandler.hpp
new file mode 100644
index 0000000..f9abe55
--- /dev/null
+++ b/src/core/parser/stack/ImportIncludeHandler.hpp
@@ -0,0 +1,90 @@
+/*
+    Ousía
+    Copyright (C) 2014, 2015  Benjamin Paaßen, Andreas Stöckel
+
+    This program 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.
+
+    This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * @file ImportIncludeHandler.hpp
+ *
+ * Contains the conceptually similar handlers for the "include" and "import"
+ * commands.
+ *
+ * @author Andreas Stöckel (astoecke@techfak.uni-bielefeld.de)
+ */
+
+#ifndef _OUSIA_IMPORT_INCLUDE_HANDLER_HPP_
+#define _OUSIA_IMPORT_INCLUDE_HANDLER_HPP_
+
+#include <core/common/Variant.hpp>
+#include <core/parser/ParserStack.hpp>
+
+namespace ousia {
+
+/**
+ * The ImportHandler is responsible for handling the "import" command. An import
+ * creates a reference to a specified file. The specified file is parsed (if
+ * this has not already been done) outside of the context of the current file.
+ * If the specified resource has already been parsed, a reference to the already
+ * parsed file is inserted. Imports are only possible before no other content
+ * has been parsed.
+ */
+class ImportHandler : public StaticFieldHandler {
+public:
+	using StaticFieldHandler::StaticFieldHandler;
+
+	void doHandle(const Variant &fieldData,
+	                      const Variant::mapType &args) override;
+
+	/**
+	 * Creates a new instance of the ImportHandler.
+	 *
+	 * @param handlerData is the data that is passed to the constructor of the
+	 * Handler base class and used there to e.g. access the ParserContext and
+	 * the Callbacks instance.
+	 */
+	static Handler *create(const HandlerData &handlerData)
+	{
+		return new ImportHandler{handlerData};
+	}
+};
+
+/**
+ * The IncludeHandler is responsible for handling the "include" command. The
+ * included file is parsed in the context of the current file and will change
+ * the content that is currently being parsed. Includes are possible at (almost)
+ * any position in the source file.
+ */
+class IncludeHandler : public StaticFieldHandler {
+public:
+	using StaticFieldHandler::StaticFieldHandler;
+
+	void doHandle(const Variant &fieldData,
+	                      const Variant::mapType &args) override;
+
+	/**
+	 * Creates a new instance of the IncludeHandler.
+	 *
+	 * @param handlerData is the data that is passed to the constructor of the
+	 * Handler base class and used there to e.g. access the ParserContext and
+	 * the Callbacks instance.
+	 */
+	static Handler *create(const HandlerData &handlerData)
+	{
+		return new IncludeHandler{handlerData};
+	}
+};
+}
+#endif