+/*
+ * 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>
+ */
+
+#include "stg/json_parser.h"
+
+#include <yajl/yajl_parse.h>
+
+using STG::JSON::Parser;
+using STG::JSON::NodeParser;
+
+class Parser::Impl
+{
+ public:
+ Impl(NodeParser* topParser);
+ ~Impl()
+ {
+ yajl_free(m_handle);
+ }
+
+ bool append(const char* data, size_t size) { return yajl_parse(m_handle, reinterpret_cast<const unsigned char*>(data), size) != yajl_status_ok; }
+ bool done() { return yajl_complete_parse(m_handle) != yajl_status_ok; }
+
+ static int parseNull(void* ctx)
+ { return runParser(ctx, &NodeParser::parseNull); }
+ static int parseBoolean(void* ctx, int value)
+ { return runParser(ctx, &NodeParser::parseBoolean, value != 0); }
+ static int parseNumber(void* ctx, const char* value, size_t size)
+ { return runParser(ctx, &NodeParser::parseNumber, std::string(value, size)); }
+ static int parseString(void* ctx, const unsigned char* value, size_t size)
+ { return runParser(ctx, &NodeParser::parseString, std::string(reinterpret_cast<const char*>(value), size)); }
+ static int parseStartMap(void* ctx)
+ { return runParser(ctx, &NodeParser::parseStartMap); }
+ static int parseMapKey(void* ctx, const unsigned char* value, size_t size)
+ { return runParser(ctx, &NodeParser::parseMapKey, std::string(reinterpret_cast<const char*>(value), size)); }
+ static int parseEndMap(void* ctx)
+ { return runParser(ctx, &NodeParser::parseEndMap); }
+ static int parseStartArray(void* ctx)
+ { return runParser(ctx, &NodeParser::parseStartArray); }
+ static int parseEndArray(void* ctx)
+ { return runParser(ctx, &NodeParser::parseEndArray); }
+
+ private:
+ yajl_handle m_handle;
+ NodeParser* m_parser;
+
+ static yajl_callbacks callbacks;
+
+ static NodeParser& getParser(void* ctx) { return *static_cast<Impl*>(ctx)->m_parser; }
+ static bool runParser(void* ctx, NodeParser* (NodeParser::*func)())
+ {
+ Impl& p = *static_cast<Impl*>(ctx);
+ NodeParser* next = (p.m_parser->*func)();
+ if (next != NULL)
+ p.m_parser = next;
+ return next != NULL;
+ }
+ template <typename T>
+ static bool runParser(void* ctx, NodeParser* (NodeParser::*func)(const T&), const T& value)
+ {
+ Impl& p = *static_cast<Impl*>(ctx);
+ NodeParser* next = (p.m_parser->*func)(value);
+ if (next != NULL)
+ p.m_parser = next;
+ return next != NULL;
+ }
+};
+
+yajl_callbacks Parser::Impl::callbacks = {
+ Parser::Impl::parseNull,
+ Parser::Impl::parseBoolean,
+ NULL, // parsing of integer is done using parseNumber
+ NULL, // parsing of double is done using parseNumber
+ Parser::Impl::parseNumber,
+ Parser::Impl::parseString,
+ Parser::Impl::parseStartMap,
+ Parser::Impl::parseMapKey,
+ Parser::Impl::parseEndMap,
+ Parser::Impl::parseStartArray,
+ Parser::Impl::parseEndArray
+};
+
+Parser::Impl::Impl(NodeParser* topParser)
+ : m_handle(yajl_alloc(&callbacks, NULL, this)),
+ m_parser(topParser)
+{
+}
+
+Parser::Parser(NodeParser* topParser)
+ : m_impl(new Impl(topParser))
+{
+}
+
+Parser::~Parser()
+{
+}
+
+bool Parser::append(const char* data, size_t size)
+{
+ return m_impl->append(data, size);
+}
+
+bool Parser::done()
+{
+ return m_impl->done();
+}
git.stg.codes / stg.git / commitdiff