--- a/WebKitTools/DumpRenderTree/chromium/CppVariant.h Fri Sep 17 09:02:29 2010 +0300
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,133 +0,0 @@
-/*
- * Copyright (C) 2010 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.
- */
-
-/*
- This file contains the declaration for CppVariant, a type used by C++ classes
- that are to be bound to JavaScript objects.
-
- CppVariant exists primarily as an interface between C++ callers and the
- corresponding NPVariant type. CppVariant also provides a number of
- convenience constructors and accessors, so that the NPVariantType values
- don't need to be exposed, and a destructor to free any memory allocated for
- string values.
-*/
-
-#ifndef CppVariant_h
-#define CppVariant_h
-
-#include "base/basictypes.h"
-#include "public/WebBindings.h"
-#include <string>
-#include <wtf/Vector.h>
-
-class CppVariant : public NPVariant {
-public:
- CppVariant();
- ~CppVariant();
- void setNull();
- void set(bool);
- void set(int32_t);
- void set(double);
-
- // Note that setting a CppVariant to a string value involves copying the
- // string data, which must be freed with a call to freeData() when the
- // CppVariant is set to a different value or is no longer needed. Normally
- // this is handled by the other set() methods and by the destructor.
- void set(const char*); // Must be a null-terminated string.
- void set(const std::string&);
- void set(const NPString&);
- void set(const NPVariant&);
-
- // Note that setting a CppVariant to an NPObject involves ref-counting
- // the actual object. freeData() should only be called if the CppVariant
- // is no longer needed. The other set() methods handle this internally.
- // Also, the object's NPClass is expected to be a static object: neither
- // the NP runtime nor CppVariant will ever free it.
- void set(NPObject*_value);
-
- // These three methods all perform deep copies of any string data. This
- // allows local CppVariants to be released by the destructor without
- // corrupting their sources. In performance-critical code, or when strings
- // are very long, avoid creating new CppVariants.
- // In case of NPObject as the data, the copying involves ref-counting
- // as opposed to deep-copying. The ref-counting ensures that sources don't
- // get corrupted when the copies get destroyed.
- void copyToNPVariant(NPVariant* result) const;
- CppVariant& operator=(const CppVariant& original);
- CppVariant(const CppVariant& original);
-
- // Calls NPN_ReleaseVariantValue, which frees any string data
- // held by the object and sets its type to null.
- // In case of NPObject, the NPN_ReleaseVariantValue decrements
- // the ref-count (releases when ref-count becomes 0)
- void freeData();
-
- // Compares this CppVariant's type and value to another's. They must be
- // identical in both type and value to be considered equal. For string and
- // object types, a deep comparison is performed; that is, the contents of the
- // strings, or the classes and refcounts of the objects, must be the same,
- // but they need not be the same pointers.
- bool isEqual(const CppVariant&) const;
-
- // The value of a CppVariant may be read directly from its NPVariant (but
- // should only be set using one of the set() methods above). Although the
- // type of a CppVariant is likewise public, it can be accessed through these
- // functions rather than directly if a caller wishes to avoid dependence on
- // the NPVariantType values.
- bool isBool() const { return (type == NPVariantType_Bool); }
- bool isInt32() const { return (type == NPVariantType_Int32); }
- bool isDouble() const { return (type == NPVariantType_Double); }
- bool isNumber() const { return (isInt32() || isDouble()); }
- bool isString() const { return (type == NPVariantType_String); }
- bool isVoid() const { return (type == NPVariantType_Void); }
- bool isNull() const { return (type == NPVariantType_Null); }
- bool isEmpty() const { return (isVoid() || isNull()); }
- bool isObject() const { return (type == NPVariantType_Object); }
-
- // Converters. The CppVariant must be of a type convertible to these values.
- // For example, toInt32() works only if isNumber() is true.
- std::string toString() const;
- int32_t toInt32() const;
- double toDouble() const;
- bool toBoolean() const;
- // Returns a vector of strings for the specified argument. This is useful
- // for converting a JavaScript array of strings into a vector of strings.
- Vector<std::string> toStringVector() const;
-
- // Invoke method of the given name on an object with the supplied arguments.
- // The first argument should be the object on which the method is to be
- // invoked. Returns whether the method was successfully invoked. If the
- // method was invoked successfully, any return value is stored in the
- // CppVariant specified by result.
- bool invoke(const std::string&, const CppVariant* arguments,
- uint32_t argumentCount, CppVariant& result) const;
-};
-
-#endif // CppVariant_h