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Issue 25277003: Remove obsolete preparser binary and tests. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Preserve test suite. Created 7 years, 2 months ago
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1 // Copyright 2011 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are
4 // met:
5 //
6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided
11 // with the distribution.
12 // * Neither the name of Google Inc. nor the names of its
13 // contributors may be used to endorse or promote products derived
14 // from this software without specific prior written permission.
15 //
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.
27
28 #ifndef PREPARSER_H
29 #define PREPARSER_H
30
31 #include "v8.h"
32 #include "v8stdint.h"
33
34 namespace v8 {
35
36 // 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.
38 class V8_EXPORT PreParserData {
39 public:
40 PreParserData(size_t size, const uint8_t* data)
41 : data_(data), size_(size) { }
42
43 // Create a PreParserData value where stack_overflow reports true.
44 static PreParserData StackOverflow() { return PreParserData(0, NULL); }
45
46 // Whether the pre-parser stopped due to a stack overflow.
47 // If this is the case, size() and data() should not be used.
48 bool stack_overflow() { return size_ == 0u; }
49
50 // The size of the data in bytes.
51 size_t size() const { return size_; }
52
53 // Pointer to the data.
54 const uint8_t* data() const { return data_; }
55
56 private:
57 const uint8_t* const data_;
58 const size_t size_;
59 };
60
61
62 // Interface for a stream of Unicode characters.
63 class V8_EXPORT UnicodeInputStream { // NOLINT - V8_EXPORT is not a class name.
64 public:
65 virtual ~UnicodeInputStream();
66
67 // Returns the next Unicode code-point in the input, or a negative value when
68 // there is no more input in the stream.
69 virtual int32_t Next() = 0;
70 };
71
72
73 // Preparse a JavaScript program. The source code is provided as a
74 // UnicodeInputStream. The max_stack_size limits the amount of stack
75 // 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()
77 // method will return true. Otherwise the result contains preparser
78 // data that can be used by the V8 parser to speed up parsing.
79 PreParserData V8_EXPORT Preparse(UnicodeInputStream* input,
80 size_t max_stack_size);
81
82 } // namespace v8.
83
84 #endif // PREPARSER_H
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