X-Git-Url: https://git.stg.codes/stg.git/blobdiff_plain/a6680ce3d763763a6010c81c8a5a8f7a1ce052db..8c6fa3fbaccc22127280bf77a48fab5a3ee0716e:/stglibs/json.lib/include/stg/json_generator.h

diff --git a/stglibs/json.lib/include/stg/json_generator.h b/stglibs/json.lib/include/stg/json_generator.h
new file mode 100644
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+++ b/stglibs/json.lib/include/stg/json_generator.h
@@ -0,0 +1,122 @@
+/*
+ *    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_GENERATOR_H__
+#define __STG_STGLIBS_JSON_GENERATOR_H__
+
+#include <string>
+#include <map>
+#include <vector>
+#include <utility>
+
+#include <boost/scoped_ptr.hpp>
+
+struct yajl_gen_t;
+
+namespace STG
+{
+namespace JSON
+{
+
+struct Gen
+{
+    virtual ~Gen() {}
+    virtual void run(yajl_gen_t* handle) const = 0;
+};
+
+struct NullGen : public Gen
+{
+    virtual void run(yajl_gen_t* handle) const;
+};
+
+class BoolGen : public Gen
+{
+    public:
+        explicit BoolGen(bool value) : m_value(value) {}
+        virtual void run(yajl_gen_t* handle) const;
+    private:
+        bool m_value;
+};
+
+class StringGen : public Gen
+{
+    public:
+        explicit StringGen(const std::string& value) : m_value(value) {}
+        virtual void run(yajl_gen_t* handle) const;
+    private:
+        std::string m_value;
+};
+
+class NumberGen : public Gen
+{
+    public:
+        explicit NumberGen(const std::string& value) : m_value(value) {}
+        template <typename T>
+        explicit NumberGen(const T& value) : m_value(x2str(value)) {}
+        virtual void run(yajl_gen_t* handle) const;
+    private:
+        std::string m_value;
+};
+
+class MapGen : public Gen
+{
+    public:
+        MapGen() {}
+        virtual ~MapGen()
+        {
+            for (Value::iterator it = m_value.begin(); it != m_value.end(); ++it)
+                if (it->second.second)
+                    delete it->second.first;
+        }
+        MapGen& add(const std::string& key, Gen* value) { m_value[key] = std::make_pair(value, true); return *this; }
+        MapGen& add(const std::string& key, Gen& value) { m_value[key] = std::make_pair(&value, false); return *this; }
+        virtual void run(yajl_gen_t* handle) const;
+    private:
+        typedef std::pair<Gen*, bool> SmartGen;
+        typedef std::map<std::string, SmartGen> Value;
+        Value m_value;
+};
+
+class ArrayGen : public Gen
+{
+    public:
+        ArrayGen() {}
+        virtual ~ArrayGen()
+        {
+            for (Value::iterator it = m_value.begin(); it != m_value.end(); ++it)
+                if (it->second)
+                    delete it->first;
+        }
+        void add(Gen* value) { m_value.push_back(std::make_pair(value, true)); }
+        void add(Gen& value) { m_value.push_back(std::make_pair(&value, false)); }
+        virtual void run(yajl_gen_t* handle) const;
+    private:
+        typedef std::pair<Gen*, bool> SmartGen;
+        typedef std::vector<SmartGen> Value;
+        Value m_value;
+};
+
+typedef bool (*Callback)(void* /*data*/, const char* /*buf*/, size_t /*size*/);
+bool generate(Gen& gen, Callback callback, void* data);
+
+}
+}
+
+#endif