From 57b46d5123084a42a2936e9014a43115d0dc070f Mon Sep 17 00:00:00 2001
From: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com>
Date: Tue, 10 Jul 2012 01:42:42 +0900
Subject: Added streaming parser for structured data format.

Added JSON streaming parser. Note that currently JSON parser ignores
frac and exp parts of number construct.
---
 src/ValueBaseStructParserStateMachine.h | 116 ++++++++++++++++++++++++++++++++
 1 file changed, 116 insertions(+)
 create mode 100644 src/ValueBaseStructParserStateMachine.h

(limited to 'src/ValueBaseStructParserStateMachine.h')

diff --git a/src/ValueBaseStructParserStateMachine.h b/src/ValueBaseStructParserStateMachine.h
new file mode 100644
index 00000000..30143181
--- /dev/null
+++ b/src/ValueBaseStructParserStateMachine.h
@@ -0,0 +1,116 @@
+/* <!-- copyright */
+/*
+ * aria2 - The high speed download utility
+ *
+ * Copyright (C) 2012 Tatsuhiro Tsujikawa
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * In addition, as a special exception, the copyright holders give
+ * permission to link the code of portions of this program with the
+ * OpenSSL library under certain conditions as described in each
+ * individual source file, and distribute linked combinations
+ * including the two.
+ * You must obey the GNU General Public License in all respects
+ * for all of the code used other than OpenSSL.  If you modify
+ * file(s) with this exception, you may extend this exception to your
+ * version of the file(s), but you are not obligated to do so.  If you
+ * do not wish to do so, delete this exception statement from your
+ * version.  If you delete this exception statement from all source
+ * files in the program, then also delete it here.
+ */
+/* copyright --> */
+#ifndef D_VALUE_BASE_STRUCT_PARSER_STATE_MACHINE_H
+#define D_VALUE_BASE_STRUCT_PARSER_STATE_MACHINE_H
+
+#include "StructParserStateMachine.h"
+
+#include <string>
+#include <stack>
+
+#include "SharedHandle.h"
+
+namespace aria2 {
+
+class ValueBase;
+
+namespace rpc {
+class XmlRpcRequestParserController;
+} // namespace rpc;
+
+class ValueBaseStructParserState;
+
+// Implementation of StructParserStateMachine, using ValueBase as
+// value holder.
+class ValueBaseStructParserStateMachine : public StructParserStateMachine {
+public:
+  typedef SharedHandle<ValueBase> ResultType;
+  static const SharedHandle<ValueBase> noResult;
+
+  struct NumberData {
+    int64_t number;
+    int frac;
+    int exp;
+  };
+
+  struct SessionData {
+    std::string str;
+    NumberData number;
+    bool bval;
+  };
+
+  ValueBaseStructParserStateMachine();
+  virtual ~ValueBaseStructParserStateMachine();
+
+  virtual void beginElement(int elementType);
+  virtual void endElement(int elementType);
+
+  virtual void charactersCallback(const char* data, size_t len);
+  virtual void numberCallback(int64_t number, int frac, int exp);
+  virtual void boolCallback(bool bval);
+
+  SharedHandle<ValueBase> getResult() const;
+
+  virtual void reset();
+
+  const std::string& getCharacters() const;
+  const NumberData& getNumber() const;
+  bool getBool() const;
+
+  void popArrayFrame();
+  void popDictFrame();
+  void pushFrame();
+  void setCurrentFrameValue(const SharedHandle<ValueBase>& value);
+  const SharedHandle<ValueBase>& getCurrentFrameValue() const;
+  void setCurrentFrameName(const std::string& name);
+
+  void pushDictState();
+  void pushDictKeyState();
+  void pushDictDataState();
+  void pushArrayState();
+  void pushArrayDataState();
+  void pushStringState();
+  void pushNumberState();
+  void pushBoolState();
+  void pushNullState();
+private:
+  rpc::XmlRpcRequestParserController* ctrl_;
+  std::stack<ValueBaseStructParserState*> stateStack_;
+  SessionData sessionData_;
+};
+
+} // namespace aria2
+
+#endif // D_VALUE_BASE_STRUCT_PARSER_STATE_MACHINE_H
-- 
cgit