Move blink platform's JSON code into a directory.

third_party/WebKit/Source/platform/JSONValues.h

-/*
- * Copyright (C) 2009 Google Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef JSONValues_h
-#define JSONValues_h
-
-#include "platform/PlatformExport.h"
-#include "wtf/Allocator.h"
-#include "wtf/Forward.h"
-#include "wtf/HashMap.h"
-#include "wtf/Noncopyable.h"
-#include "wtf/TypeTraits.h"
-#include "wtf/Vector.h"
-#include "wtf/text/StringHash.h"
-#include "wtf/text/WTFString.h"
-
-#include <memory>
-
-namespace blink {
-
-class JSONValue;
-
-} // namespace blink
-
-namespace blink {
-
-class JSONArray;
-class JSONObject;
-
-class PLATFORM_EXPORT JSONValue {
-    USING_FAST_MALLOC(JSONValue);
-    WTF_MAKE_NONCOPYABLE(JSONValue);
-public:
-    static const int maxDepth = 1000;
-
-    virtual ~JSONValue() { }
-
-    static std::unique_ptr<JSONValue> null()
-    {
-        return wrapUnique(new JSONValue());
-    }
-
-    enum ValueType {
-        TypeNull = 0,
-        TypeBoolean,
-        TypeInteger,
-        TypeDouble,
-        TypeString,
-        TypeObject,
-        TypeArray
-    };
-
-    ValueType getType() const { return m_type; }
-
-    bool isNull() const { return m_type == TypeNull; }
-
-    virtual bool asBoolean(bool* output) const;
-    virtual bool asDouble(double* output) const;
-    virtual bool asInteger(int* output) const;
-    virtual bool asString(String* output) const;
-
-    String toJSONString() const;
-    String toPrettyJSONString() const;
-    virtual void writeJSON(StringBuilder* output) const;
-    virtual void prettyWriteJSON(StringBuilder* output) const;
-    virtual std::unique_ptr<JSONValue> clone() const;
-
-    static String quoteString(const String&);
-
-protected:
-    JSONValue() : m_type(TypeNull) { }
-    explicit JSONValue(ValueType type) : m_type(type) { }
-    virtual void prettyWriteJSONInternal(StringBuilder* output, int depth) const;
-
-private:
-    friend class JSONObject;
-    friend class JSONArray;
-
-    ValueType m_type;
-};
-
-class PLATFORM_EXPORT JSONBasicValue : public JSONValue {
-public:
-    static std::unique_ptr<JSONBasicValue> create(bool value)
-    {
-        return wrapUnique(new JSONBasicValue(value));
-    }
-
-    static std::unique_ptr<JSONBasicValue> create(int value)
-    {
-        return wrapUnique(new JSONBasicValue(value));
-    }
-
-    static std::unique_ptr<JSONBasicValue> create(double value)
-    {
-        return wrapUnique(new JSONBasicValue(value));
-    }
-
-    bool asBoolean(bool* output) const override;
-    bool asDouble(double* output) const override;
-    bool asInteger(int* output) const override;
-    void writeJSON(StringBuilder* output) const override;
-    std::unique_ptr<JSONValue> clone() const override;
-
-private:
-    explicit JSONBasicValue(bool value) : JSONValue(TypeBoolean), m_boolValue(value) { }
-    explicit JSONBasicValue(int value) : JSONValue(TypeInteger), m_integerValue(value) { }
-    explicit JSONBasicValue(double value) : JSONValue(TypeDouble), m_doubleValue(value) { }
-
-    union {
-        bool m_boolValue;
-        double m_doubleValue;
-        int m_integerValue;
-    };
-};
-
-class PLATFORM_EXPORT JSONString : public JSONValue {
-public:
-    static std::unique_ptr<JSONString> create(const String& value)
-    {
-        return wrapUnique(new JSONString(value));
-    }
-
-    static std::unique_ptr<JSONString> create(const char* value)
-    {
-        return wrapUnique(new JSONString(value));
-    }
-
-    bool asString(String* output) const override;
-    void writeJSON(StringBuilder* output) const override;
-    std::unique_ptr<JSONValue> clone() const override;
-
-private:
-    explicit JSONString(const String& value) : JSONValue(TypeString), m_stringValue(value) { }
-    explicit JSONString(const char* value) : JSONValue(TypeString), m_stringValue(value) { }
-
-    String m_stringValue;
-};
-
-class PLATFORM_EXPORT JSONObject : public JSONValue {
-public:
-    using Entry = std::pair<String, JSONValue*>;
-    static std::unique_ptr<JSONObject> create()
-    {
-        return wrapUnique(new JSONObject());
-    }
-
-    static JSONObject* cast(JSONValue* value)
-    {
-        if (!value || value->getType() != TypeObject)
-            return nullptr;
-        return static_cast<JSONObject*>(value);
-    }
-
-    static std::unique_ptr<JSONObject> cast(std::unique_ptr<JSONValue> value)
-    {
-        return wrapUnique(JSONObject::cast(value.release()));
-    }
-
-    void writeJSON(StringBuilder* output) const override;
-    std::unique_ptr<JSONValue> clone() const override;
-
-    size_t size() const { return m_data.size(); }
-
-    void setBoolean(const String& name, bool);
-    void setInteger(const String& name, int);
-    void setDouble(const String& name, double);
-    void setString(const String& name, const String&);
-    void setValue(const String& name, std::unique_ptr<JSONValue>);
-    void setObject(const String& name, std::unique_ptr<JSONObject>);
-    void setArray(const String& name, std::unique_ptr<JSONArray>);
-
-    bool getBoolean(const String& name, bool* output) const;
-    bool getInteger(const String& name, int* output) const;
-    bool getDouble(const String& name, double* output) const;
-    bool getString(const String& name, String* output) const;
-
-    JSONObject* getObject(const String& name) const;
-    JSONArray* getArray(const String& name) const;
-    JSONValue* get(const String& name) const;
-    Entry at(size_t index) const;
-
-    bool booleanProperty(const String& name, bool defaultValue) const;
-    int integerProperty(const String& name, int defaultValue) const;
-    double doubleProperty(const String& name, double defaultValue) const;
-    void remove(const String& name);
-
-    ~JSONObject() override;
-
-protected:
-    void prettyWriteJSONInternal(StringBuilder* output, int depth) const override;
-
-private:
-    JSONObject();
-    template<typename T>
-    void set(const String& key, std::unique_ptr<T>& value)
-    {
-        DCHECK(value);
-        if (m_data.set(key, std::move(value)).isNewEntry)
-            m_order.append(key);
-    }
-
-    using Dictionary = HashMap<String, std::unique_ptr<JSONValue>>;
-    Dictionary m_data;
-    Vector<String> m_order;
-};
-
-class PLATFORM_EXPORT JSONArray : public JSONValue {
-public:
-    static std::unique_ptr<JSONArray> create()
-    {
-        return wrapUnique(new JSONArray());
-    }
-
-    static JSONArray* cast(JSONValue* value)
-    {
-        if (!value || value->getType() != TypeArray)
-            return nullptr;
-        return static_cast<JSONArray*>(value);
-    }
-
-    static std::unique_ptr<JSONArray> cast(std::unique_ptr<JSONValue> value)
-    {
-        return wrapUnique(JSONArray::cast(value.release()));
-    }
-
-    ~JSONArray() override;
-
-    void writeJSON(StringBuilder* output) const override;
-    std::unique_ptr<JSONValue> clone() const override;
-
-    void pushBoolean(bool);
-    void pushInteger(int);
-    void pushDouble(double);
-    void pushString(const String&);
-    void pushValue(std::unique_ptr<JSONValue>);
-    void pushObject(std::unique_ptr<JSONObject>);
-    void pushArray(std::unique_ptr<JSONArray>);
-
-    JSONValue* at(size_t index);
-    size_t size() const { return m_data.size(); }
-
-protected:
-    void prettyWriteJSONInternal(StringBuilder* output, int depth) const override;
-
-private:
-    JSONArray();
-    Vector<std::unique_ptr<JSONValue>> m_data;
-};
-
-PLATFORM_EXPORT void escapeStringForJSON(const String&, StringBuilder*);
-void doubleQuoteStringForJSON(const String&, StringBuilder*);
-
-} // namespace blink
-
-#endif // JSONValues_h