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Side by Side Diff: include/v8-preparser.h

Issue 22715004: Version 3.20.15 (Closed) Base URL: https://v8.googlecode.com/svn/trunk
Patch Set: Add TypedArray API and correctness patches r16033 and r16084 Created 7 years, 4 months ago
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1 // Copyright 2011 the V8 project authors. All rights reserved. 1 // Copyright 2011 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
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21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 27
28 #ifndef PREPARSER_H 28 #ifndef PREPARSER_H
29 #define PREPARSER_H 29 #define PREPARSER_H
30 30
31 #include "v8.h"
32 #include "v8stdint.h" 31 #include "v8stdint.h"
33 32
33 #ifdef _WIN32
34
35 // Setup for Windows DLL export/import. When building the V8 DLL the
36 // BUILDING_V8_SHARED needs to be defined. When building a program which uses
37 // the V8 DLL USING_V8_SHARED needs to be defined. When either building the V8
38 // static library or building a program which uses the V8 static library neither
39 // BUILDING_V8_SHARED nor USING_V8_SHARED should be defined.
40 #if defined(BUILDING_V8_SHARED) && defined(USING_V8_SHARED)
41 #error both BUILDING_V8_SHARED and USING_V8_SHARED are set - please check the\
42 build configuration to ensure that at most one of these is set
43 #endif
44
45 #ifdef BUILDING_V8_SHARED
46 #define V8EXPORT __declspec(dllexport)
47 #elif USING_V8_SHARED
48 #define V8EXPORT __declspec(dllimport)
49 #else
50 #define V8EXPORT
51 #endif // BUILDING_V8_SHARED
52
53 #else // _WIN32
54
55 // Setup for Linux shared library export. There is no need to distinguish
56 // between building or using the V8 shared library, but we should not
57 // export symbols when we are building a static library.
58 #if defined(__GNUC__) && ((__GNUC__ >= 4) || \
59 (__GNUC__ == 3 && __GNUC_MINOR__ >= 3)) && defined(V8_SHARED)
60 #define V8EXPORT __attribute__ ((visibility("default")))
61 #else
62 #define V8EXPORT
63 #endif
64
65 #endif // _WIN32
66
67
34 namespace v8 { 68 namespace v8 {
35 69
36 // The result of preparsing is either a stack overflow error, or an opaque 70 // The result of preparsing is either a stack overflow error, or an opaque
37 // blob of data that can be passed back into the parser. 71 // blob of data that can be passed back into the parser.
38 class V8_EXPORT PreParserData { 72 class V8EXPORT PreParserData {
39 public: 73 public:
40 PreParserData(size_t size, const uint8_t* data) 74 PreParserData(size_t size, const uint8_t* data)
41 : data_(data), size_(size) { } 75 : data_(data), size_(size) { }
42 76
43 // Create a PreParserData value where stack_overflow reports true. 77 // Create a PreParserData value where stack_overflow reports true.
44 static PreParserData StackOverflow() { return PreParserData(0, NULL); } 78 static PreParserData StackOverflow() { return PreParserData(0, NULL); }
45 79
46 // Whether the pre-parser stopped due to a stack overflow. 80 // Whether the pre-parser stopped due to a stack overflow.
47 // If this is the case, size() and data() should not be used. 81 // If this is the case, size() and data() should not be used.
48 bool stack_overflow() { return size_ == 0u; } 82 bool stack_overflow() { return size_ == 0u; }
49 83
50 // The size of the data in bytes. 84 // The size of the data in bytes.
51 size_t size() const { return size_; } 85 size_t size() const { return size_; }
52 86
53 // Pointer to the data. 87 // Pointer to the data.
54 const uint8_t* data() const { return data_; } 88 const uint8_t* data() const { return data_; }
55 89
56 private: 90 private:
57 const uint8_t* const data_; 91 const uint8_t* const data_;
58 const size_t size_; 92 const size_t size_;
59 }; 93 };
60 94
61 95
62 // Interface for a stream of Unicode characters. 96 // Interface for a stream of Unicode characters.
63 class V8_EXPORT UnicodeInputStream { // NOLINT - V8_EXPORT is not a class name. 97 class V8EXPORT UnicodeInputStream { // NOLINT - Thinks V8EXPORT is class name.
64 public: 98 public:
65 virtual ~UnicodeInputStream(); 99 virtual ~UnicodeInputStream();
66 100
67 // Returns the next Unicode code-point in the input, or a negative value when 101 // Returns the next Unicode code-point in the input, or a negative value when
68 // there is no more input in the stream. 102 // there is no more input in the stream.
69 virtual int32_t Next() = 0; 103 virtual int32_t Next() = 0;
70 }; 104 };
71 105
72 106
73 // Preparse a JavaScript program. The source code is provided as a 107 // Preparse a JavaScript program. The source code is provided as a
74 // UnicodeInputStream. The max_stack_size limits the amount of stack 108 // UnicodeInputStream. The max_stack_size limits the amount of stack
75 // space that the preparser is allowed to use. If the preparser uses 109 // space that the preparser is allowed to use. If the preparser uses
76 // more stack space than the limit provided, the result's stack_overflow() 110 // more stack space than the limit provided, the result's stack_overflow()
77 // method will return true. Otherwise the result contains preparser 111 // method will return true. Otherwise the result contains preparser
78 // data that can be used by the V8 parser to speed up parsing. 112 // data that can be used by the V8 parser to speed up parsing.
79 PreParserData V8_EXPORT Preparse(UnicodeInputStream* input, 113 PreParserData V8EXPORT Preparse(UnicodeInputStream* input,
80 size_t max_stack_size); 114 size_t max_stack_size);
81 115
82 } // namespace v8. 116 } // namespace v8.
83 117
118 #undef V8EXPORT
119
84 #endif // PREPARSER_H 120 #endif // PREPARSER_H
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