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
35namespace JSC {
36
37 enum SourceBOMPresence { SourceHasNoBOMs, SourceCouldHaveBOMs };
38
39 class SourceProvider : public RefCounted<SourceProvider> {
40 public:
41 SourceProvider(const UString& url, SourceBOMPresence hasBOMs = SourceCouldHaveBOMs)
42 : m_url(url)
43 , m_hasBOMs(hasBOMs)
44 {
45 }
46 virtual ~SourceProvider() { }
47
48 virtual UString getRange(int start, int end) const = 0;
49 virtual const UChar* data() const = 0;
50 virtual int length() const = 0;
51
52 const UString& url() { return m_url; }
53 intptr_t asID() { return reinterpret_cast<intptr_t>(this); }
54
55 SourceBOMPresence hasBOMs() const { return m_hasBOMs; }
56
57 private:
58 UString m_url;
59 SourceBOMPresence m_hasBOMs;
60 };
61
62 class UStringSourceProvider : public SourceProvider {
63 public:
64 static PassRefPtr<UStringSourceProvider> create(const UString& source, const UString& url)
65 {
66 return adoptRef(p: new UStringSourceProvider(source, url));
67 }
68
69 UString getRange(int start, int end) const { return m_source.substr(pos: start, len: end - start); }
70 const UChar* data() const { return m_source.data(); }
71 int length() const { return m_source.size(); }
72
73#ifdef QT_BUILD_SCRIPT_LIB
74 protected:
75#else
76 private:
77#endif
78 UStringSourceProvider(const UString& source, const UString& url)
79 : SourceProvider(url)
80 , m_source(source)
81 {
82 }
83
84 UString m_source;
85 };
86
87} // namespace JSC
88
89#endif // SourceProvider_h
90

source code of qtscript/src/3rdparty/javascriptcore/JavaScriptCore/parser/SourceProvider.h