| /* |
| * 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/RefCounted.h" |
| #include "wtf/TypeTraits.h" |
| #include "wtf/Vector.h" |
| #include "wtf/text/StringHash.h" |
| #include "wtf/text/WTFString.h" |
| |
| namespace blink { |
| |
| class JSONValue; |
| |
| } // namespace blink |
| |
| namespace blink { |
| |
| class JSONArray; |
| class JSONObject; |
| |
| class PLATFORM_EXPORT JSONValue : public RefCounted<JSONValue> { |
| public: |
| static const int maxDepth = 1000; |
| |
| virtual ~JSONValue() { } |
| |
| static PassRefPtr<JSONValue> null() |
| { |
| return adoptRef(new JSONValue()); |
| } |
| |
| typedef enum { |
| TypeNull = 0, |
| TypeBoolean, |
| TypeNumber, |
| TypeString, |
| TypeObject, |
| TypeArray |
| } Type; |
| |
| Type getType() const { return m_type; } |
| |
| bool isNull() const { return m_type == TypeNull; } |
| |
| virtual bool asBoolean(bool* output) const; |
| virtual bool asNumber(double* output) const; |
| virtual bool asNumber(long* output) const; |
| virtual bool asNumber(int* output) const; |
| virtual bool asNumber(unsigned long* output) const; |
| virtual bool asNumber(unsigned* 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; |
| |
| static String quoteString(const String&); |
| |
| protected: |
| JSONValue() : m_type(TypeNull) { } |
| explicit JSONValue(Type type) : m_type(type) { } |
| virtual void prettyWriteJSONInternal(StringBuilder* output, int depth) const; |
| |
| private: |
| friend class JSONObject; |
| friend class JSONArray; |
| |
| Type m_type; |
| }; |
| |
| class PLATFORM_EXPORT JSONBasicValue : public JSONValue { |
| public: |
| |
| static PassRefPtr<JSONBasicValue> create(bool value) |
| { |
| return adoptRef(new JSONBasicValue(value)); |
| } |
| |
| static PassRefPtr<JSONBasicValue> create(int value) |
| { |
| return adoptRef(new JSONBasicValue(value)); |
| } |
| |
| static PassRefPtr<JSONBasicValue> create(double value) |
| { |
| return adoptRef(new JSONBasicValue(value)); |
| } |
| |
| bool asBoolean(bool* output) const override; |
| bool asNumber(double* output) const override; |
| bool asNumber(long* output) const override; |
| bool asNumber(int* output) const override; |
| bool asNumber(unsigned long* output) const override; |
| bool asNumber(unsigned* output) const override; |
| |
| void writeJSON(StringBuilder* output) const override; |
| |
| private: |
| explicit JSONBasicValue(bool value) : JSONValue(TypeBoolean), m_boolValue(value) { } |
| explicit JSONBasicValue(int value) : JSONValue(TypeNumber), m_doubleValue((double)value) { } |
| explicit JSONBasicValue(double value) : JSONValue(TypeNumber), m_doubleValue(value) { } |
| |
| union { |
| bool m_boolValue; |
| double m_doubleValue; |
| }; |
| }; |
| |
| class PLATFORM_EXPORT JSONString : public JSONValue { |
| public: |
| static PassRefPtr<JSONString> create(const String& value) |
| { |
| return adoptRef(new JSONString(value)); |
| } |
| |
| static PassRefPtr<JSONString> create(const char* value) |
| { |
| return adoptRef(new JSONString(value)); |
| } |
| |
| bool asString(String* output) const override; |
| |
| void writeJSON(StringBuilder* output) 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 { |
| private: |
| typedef HashMap<String, RefPtr<JSONValue>> Dictionary; |
| |
| public: |
| typedef Dictionary::iterator iterator; |
| typedef Dictionary::const_iterator const_iterator; |
| |
| static PassRefPtr<JSONObject> create() |
| { |
| return adoptRef(new JSONObject()); |
| } |
| |
| static PassRefPtr<JSONObject> cast(PassRefPtr<JSONValue> value) |
| { |
| if (!value || value->getType() != TypeObject) |
| return nullptr; |
| return adoptRef(static_cast<JSONObject*>(value.leakRef())); |
| } |
| |
| void writeJSON(StringBuilder* output) const override; |
| |
| int size() const { return m_data.size(); } |
| |
| void setBoolean(const String& name, bool); |
| void setNumber(const String& name, double); |
| void setString(const String& name, const String&); |
| void setValue(const String& name, PassRefPtr<JSONValue>); |
| void setObject(const String& name, PassRefPtr<JSONObject>); |
| void setArray(const String& name, PassRefPtr<JSONArray>); |
| |
| iterator find(const String& name); |
| const_iterator find(const String& name) const; |
| bool getBoolean(const String& name, bool* output) const; |
| template<class T> bool getNumber(const String& name, T* output) const |
| { |
| RefPtr<JSONValue> value = get(name); |
| if (!value) |
| return false; |
| return value->asNumber(output); |
| } |
| bool getString(const String& name, String* output) const; |
| PassRefPtr<JSONObject> getObject(const String& name) const; |
| PassRefPtr<JSONArray> getArray(const String& name) const; |
| PassRefPtr<JSONValue> get(const String& name) const; |
| |
| bool booleanProperty(const String& name, bool defaultValue) const; |
| |
| void remove(const String& name); |
| |
| iterator begin() { return m_data.begin(); } |
| iterator end() { return m_data.end(); } |
| const_iterator begin() const { return m_data.begin(); } |
| const_iterator end() const { return m_data.end(); } |
| ~JSONObject() override; |
| |
| protected: |
| void prettyWriteJSONInternal(StringBuilder* output, int depth) const override; |
| |
| private: |
| JSONObject(); |
| |
| Dictionary m_data; |
| Vector<String> m_order; |
| }; |
| |
| class PLATFORM_EXPORT JSONArray : public JSONValue { |
| public: |
| typedef Vector<RefPtr<JSONValue>>::iterator iterator; |
| typedef Vector<RefPtr<JSONValue>>::const_iterator const_iterator; |
| |
| static PassRefPtr<JSONArray> create() |
| { |
| return adoptRef(new JSONArray()); |
| } |
| |
| static PassRefPtr<JSONArray> cast(PassRefPtr<JSONValue> value) |
| { |
| if (!value || value->getType() != TypeArray) |
| return nullptr; |
| return adoptRef(static_cast<JSONArray*>(value.leakRef())); |
| } |
| |
| ~JSONArray() override; |
| |
| void writeJSON(StringBuilder* output) const override; |
| |
| void pushBoolean(bool); |
| void pushInt(int); |
| void pushNumber(double); |
| void pushString(const String&); |
| void pushValue(PassRefPtr<JSONValue>); |
| void pushObject(PassRefPtr<JSONObject>); |
| void pushArray(PassRefPtr<JSONArray>); |
| |
| PassRefPtr<JSONValue> get(size_t index); |
| unsigned length() const { return m_data.size(); } |
| |
| iterator begin() { return m_data.begin(); } |
| iterator end() { return m_data.end(); } |
| const_iterator begin() const { return m_data.begin(); } |
| const_iterator end() const { return m_data.end(); } |
| |
| protected: |
| void prettyWriteJSONInternal(StringBuilder* output, int depth) const override; |
| |
| private: |
| JSONArray(); |
| Vector<RefPtr<JSONValue>> m_data; |
| }; |
| |
| PLATFORM_EXPORT void escapeStringForJSON(const String&, StringBuilder*); |
| void doubleQuoteStringForJSON(const String&, StringBuilder*); |
| |
| } // namespace blink |
| |
| #endif // JSONValues_h |