Port to CMake, get rid of os_int.h.

[stg.git] / libs / json / include / stg / json_parser.h

diff --git a/libs/json/include/stg/json_parser.h b/libs/json/include/stg/json_parser.h
new file mode 100644 (file)
index 0000000..a614257
--- /dev/null
+++ b/libs/json/include/stg/json_parser.h
@@ -0,0 +1,107 @@
+/*
+ *    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 2 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, write to the Free Software
+ *    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+/*
+ *    Author : Maxim Mamontov <faust@stargazer.dp.ua>
+ */
+
+#ifndef __STG_STGLIBS_JSON_PARSER_H__
+#define __STG_STGLIBS_JSON_PARSER_H__
+
+#include "stg/common.h"
+
+#include <string>
+#include <map>
+
+#include <boost/scoped_ptr.hpp>
+
+namespace STG
+{
+namespace JSON
+{
+
+struct NodeParser
+{
+    virtual ~NodeParser() {}
+
+    virtual NodeParser* parseNull() { return this; }
+    virtual NodeParser* parseBoolean(const bool& /*value*/) { return this; }
+    virtual NodeParser* parseNumber(const std::string& /*value*/) { return this; }
+    virtual NodeParser* parseString(const std::string& /*value*/) { return this; }
+    virtual NodeParser* parseStartMap() { return this; }
+    virtual NodeParser* parseMapKey(const std::string& /*value*/) { return this; }
+    virtual NodeParser* parseEndMap() { return this; }
+    virtual NodeParser* parseStartArray() { return this; }
+    virtual NodeParser* parseEndArray() { return this; }
+};
+
+class Parser
+{
+    public:
+        explicit Parser(NodeParser* topParser);
+        virtual ~Parser();
+
+        bool append(const char* data, size_t size);
+        bool last();
+
+    private:
+        class Impl;
+        boost::scoped_ptr<Impl> m_impl;
+};
+
+template <typename T>
+class EnumParser : public NodeParser
+{
+    public:
+        typedef std::map<std::string, T> Codes;
+        EnumParser(NodeParser* next, T& data, std::string& dataStr, const Codes& codes)
+            : m_next(next), m_data(data), m_dataStr(dataStr), m_codes(codes) {}
+        virtual NodeParser* parseString(const std::string& value)
+        {
+            m_dataStr = value;
+            const typename Codes::const_iterator it = m_codes.find(ToLower(value));
+            if (it != m_codes.end())
+                m_data = it->second;
+            return m_next;
+        }
+    private:
+        NodeParser* m_next;
+        T& m_data;
+        std::string& m_dataStr;
+        const Codes& m_codes;
+};
+
+class PairsParser : public NodeParser
+{
+    public:
+        typedef std::map<std::string, std::string> Pairs;
+
+        PairsParser(NodeParser* next, Pairs& pairs) : m_next(next), m_pairs(pairs) {}
+
+        virtual NodeParser* parseStartMap() { return this; }
+        virtual NodeParser* parseString(const std::string& value) { m_pairs[m_key] = value; return this; }
+        virtual NodeParser* parseMapKey(const std::string& value) { m_key = value; return this; }
+        virtual NodeParser* parseEndMap() { return m_next; }
+    private:
+        NodeParser* m_next;
+        Pairs& m_pairs;
+        std::string m_key;
+};
+
+}
+}
+
+#endif