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1 // Copyright 2008 the V8 project authors. All rights reserved. | 1 // Copyright 2008 the V8 project authors. All rights reserved. |
Karl Klose
2011/04/12 07:55:40
Please update to 2011.
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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 |
11 // with the distribution. | 11 // with the distribution. |
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42 // [0]: year | 42 // [0]: year |
43 // [1]: month (0 = Jan, 1 = Feb, ...) | 43 // [1]: month (0 = Jan, 1 = Feb, ...) |
44 // [2]: day | 44 // [2]: day |
45 // [3]: hour | 45 // [3]: hour |
46 // [4]: minute | 46 // [4]: minute |
47 // [5]: second | 47 // [5]: second |
48 // [6]: millisecond | 48 // [6]: millisecond |
49 // [7]: UTC offset in seconds, or null value if no timezone specified | 49 // [7]: UTC offset in seconds, or null value if no timezone specified |
50 // If parsing fails, return false (content of output array is not defined). | 50 // If parsing fails, return false (content of output array is not defined). |
51 template <typename Char> | 51 template <typename Char> |
52 static bool Parse(Vector<Char> str, FixedArray* output); | 52 static bool Parse(Vector<Char> str, FixedArray* output, UnicodeCache* cache); |
53 | 53 |
54 enum { | 54 enum { |
55 YEAR, MONTH, DAY, HOUR, MINUTE, SECOND, MILLISECOND, UTC_OFFSET, OUTPUT_SIZE | 55 YEAR, MONTH, DAY, HOUR, MINUTE, SECOND, MILLISECOND, UTC_OFFSET, OUTPUT_SIZE |
56 }; | 56 }; |
57 | 57 |
58 private: | 58 private: |
59 // Range testing | 59 // Range testing |
60 static inline bool Between(int x, int lo, int hi) { | 60 static inline bool Between(int x, int lo, int hi) { |
61 return static_cast<unsigned>(x - lo) <= static_cast<unsigned>(hi - lo); | 61 return static_cast<unsigned>(x - lo) <= static_cast<unsigned>(hi - lo); |
62 } | 62 } |
63 // Indicates a missing value. | 63 // Indicates a missing value. |
64 static const int kNone = kMaxInt; | 64 static const int kNone = kMaxInt; |
65 | 65 |
66 // InputReader provides basic string parsing and character classification. | 66 // InputReader provides basic string parsing and character classification. |
67 template <typename Char> | 67 template <typename Char> |
68 class InputReader BASE_EMBEDDED { | 68 class InputReader BASE_EMBEDDED { |
69 public: | 69 public: |
70 explicit InputReader(Vector<Char> s) | 70 explicit InputReader(UnicodeCache* unicode_cache, Vector<Char> s) |
Karl Klose
2011/04/12 07:55:40
Explicit is no longer needed here.
Lasse Reichstein
2011/04/12 08:18:47
Removed.
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71 : index_(0), | 71 : index_(0), |
72 buffer_(s), | 72 buffer_(s), |
73 has_read_number_(false), | 73 has_read_number_(false), |
74 scanner_constants_(Isolate::Current()->scanner_constants()) { | 74 unicode_cache_(unicode_cache) { |
75 Next(); | 75 Next(); |
76 } | 76 } |
77 | 77 |
78 // Advance to the next character of the string. | 78 // Advance to the next character of the string. |
79 void Next() { ch_ = (index_ < buffer_.length()) ? buffer_[index_++] : 0; } | 79 void Next() { ch_ = (index_ < buffer_.length()) ? buffer_[index_++] : 0; } |
80 | 80 |
81 // Read a string of digits as an unsigned number (cap just below kMaxInt). | 81 // Read a string of digits as an unsigned number (cap just below kMaxInt). |
82 int ReadUnsignedNumber() { | 82 int ReadUnsignedNumber() { |
83 has_read_number_ = true; | 83 has_read_number_ = true; |
84 int n; | 84 int n; |
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115 // The skip methods return whether they actually skipped something. | 115 // The skip methods return whether they actually skipped something. |
116 bool Skip(uint32_t c) { | 116 bool Skip(uint32_t c) { |
117 if (ch_ == c) { | 117 if (ch_ == c) { |
118 Next(); | 118 Next(); |
119 return true; | 119 return true; |
120 } | 120 } |
121 return false; | 121 return false; |
122 } | 122 } |
123 | 123 |
124 bool SkipWhiteSpace() { | 124 bool SkipWhiteSpace() { |
125 if (scanner_constants_->IsWhiteSpace(ch_)) { | 125 if (unicode_cache_->IsWhiteSpace(ch_)) { |
126 Next(); | 126 Next(); |
127 return true; | 127 return true; |
128 } | 128 } |
129 return false; | 129 return false; |
130 } | 130 } |
131 | 131 |
132 bool SkipParentheses() { | 132 bool SkipParentheses() { |
133 if (ch_ != '(') return false; | 133 if (ch_ != '(') return false; |
134 int balance = 0; | 134 int balance = 0; |
135 do { | 135 do { |
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151 int GetAsciiSignValue() const { return 44 - static_cast<int>(ch_); } | 151 int GetAsciiSignValue() const { return 44 - static_cast<int>(ch_); } |
152 | 152 |
153 // Indicates whether any (possibly empty!) numbers have been read. | 153 // Indicates whether any (possibly empty!) numbers have been read. |
154 bool HasReadNumber() const { return has_read_number_; } | 154 bool HasReadNumber() const { return has_read_number_; } |
155 | 155 |
156 private: | 156 private: |
157 int index_; | 157 int index_; |
158 Vector<Char> buffer_; | 158 Vector<Char> buffer_; |
159 bool has_read_number_; | 159 bool has_read_number_; |
160 uint32_t ch_; | 160 uint32_t ch_; |
161 ScannerConstants* scanner_constants_; | 161 UnicodeCache* unicode_cache_; |
162 }; | 162 }; |
163 | 163 |
164 enum KeywordType { INVALID, MONTH_NAME, TIME_ZONE_NAME, AM_PM }; | 164 enum KeywordType { INVALID, MONTH_NAME, TIME_ZONE_NAME, AM_PM }; |
165 | 165 |
166 // KeywordTable maps names of months, time zones, am/pm to numbers. | 166 // KeywordTable maps names of months, time zones, am/pm to numbers. |
167 class KeywordTable : public AllStatic { | 167 class KeywordTable : public AllStatic { |
168 public: | 168 public: |
169 // Look up a word in the keyword table and return an index. | 169 // Look up a word in the keyword table and return an index. |
170 // 'pre' contains a prefix of the word, zero-padded to size kPrefixLength | 170 // 'pre' contains a prefix of the word, zero-padded to size kPrefixLength |
171 // and 'len' is the word length. | 171 // and 'len' is the word length. |
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256 int comp_[kSize]; | 256 int comp_[kSize]; |
257 int index_; | 257 int index_; |
258 int named_month_; | 258 int named_month_; |
259 }; | 259 }; |
260 }; | 260 }; |
261 | 261 |
262 | 262 |
263 } } // namespace v8::internal | 263 } } // namespace v8::internal |
264 | 264 |
265 #endif // V8_DATEPARSER_H_ | 265 #endif // V8_DATEPARSER_H_ |
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