1 files changed, 78 insertions, 0 deletions
diff --git a/src/core/utils/Tokenizer.hpp b/src/core/utils/Tokenizer.hpp
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+++ b/src/core/utils/Tokenizer.hpp
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+/*
+    Ousía
+    Copyright (C) 2014  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/>.
+*/
+
+#ifndef _OUSIA_UTILS_TOKENIZER_HPP_
+#define _OUSIA_UTILS_TOKENIZER_HPP_
+
+#include <istream>
+#include <unordered_map>
+#include <queue>
+
+namespace ousia {
+namespace utils {
+
+class TokenizerException : public std::exception {
+public:
+	const std::string msg;
+
+	ArgumentValidatorError(const std::string &msg) : msg(msg){};
+
+	virtual const char *what() const noexcept override { return msg.c_str(); }
+};
+
+class TokenTreeNode {
+public:
+	const std::unordered_map<char, TokenTreeNode> children;
+	const int tokenId;
+
+	TokenTreeNode(const std::map<std::string, int> &inputs);
+};
+
+struct Token {
+	const int tokenId;
+	const std::string content;
+	const int column;
+	const int line;
+
+	Token(int tokenId, std::string content, int column, int line)
+	    : tokenId(tokenId), content(content), column(column), line(line)
+	{
+	}
+};
+
+class Tokenizer {
+private:
+	const std::istream &input;
+	const TokenTreeNode root;
+	const std::queue<Token> peek;
+
+public:
+	Tokenizer(const TokenTreeNode &root, std::istream &input);
+
+	bool hasNext();
+
+	const Token &next();
+
+	const Token &peek();
+
+	void reset();
+};
+}
+}
+
+#endif