1 /*

     2  * Copyright (C) 2008, 2009 Apple Inc. All rights reserved.

     3  *

     4  * Redistribution and use in source and binary forms, with or without

     5  * modification, are permitted provided that the following conditions

     6  * are met:

     7  *

     8  * 1.  Redistributions of source code must retain the above copyright

     9  *     notice, this list of conditions and the following disclaimer.

    10  * 2.  Redistributions in binary form must reproduce the above copyright

    11  *     notice, this list of conditions and the following disclaimer in the

    12  *     documentation and/or other materials provided with the distribution.

    13  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of

    14  *     its contributors may be used to endorse or promote products derived

    15  *     from this software without specific prior written permission.

    16  *

    17  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY

    18  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

    19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

    20  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY

    21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

    22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

    23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND

    24  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

    25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF

    26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

    27  */

    28 

    29 #ifndef SourceProvider_h

    30 #define SourceProvider_h

    31 

    32 #include "UString.h"

    33 #include <wtf/RefCounted.h>

    34 

    35 namespace JSC {

    36 

    37     class SourceProvider : public RefCounted<SourceProvider> {

    38     public:

    39         SourceProvider(const UString& url)

    40             : m_url(url)

    41             , m_validated(false)

    42         {

    43         }

    44         virtual ~SourceProvider() { }

    45 

    46         virtual UString getRange(int start, int end) const = 0;

    47         virtual const UChar* data() const = 0;

    48         virtual int length() const = 0;

    49         

    50         const UString& url() { return m_url; }

    51         intptr_t asID() { return reinterpret_cast<intptr_t>(this); }

    52 

    53         bool isValid() const { return m_validated; }

    54         void setValid() { m_validated = true; }

    55 

    56     private:

    57         UString m_url;

    58         bool m_validated;

    59     };

    60 

    61     class UStringSourceProvider : public SourceProvider {

    62     public:

    63         static PassRefPtr<UStringSourceProvider> create(const UString& source, const UString& url)

    64         {

    65             return adoptRef(new UStringSourceProvider(source, url));

    66         }

    67 

    68         UString getRange(int start, int end) const

    69         {

    70             return m_source.substr(start, end - start);

    71         }

    72         const UChar* data() const { return m_source.data(); }

    73         int length() const { return m_source.size(); }

    74 

    75     private:

    76         UStringSourceProvider(const UString& source, const UString& url)

    77             : SourceProvider(url)

    78             , m_source(source)

    79         {

    80         }

    81 

    82         UString m_source;

    83     };

    84     

    85 } // namespace JSC

    86 

    87 #endif // SourceProvider_h