Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1 | // Copyright 2008 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 | #include "v8.h" |
| 29 | |
| 30 | #include "dateparser.h" |
| 31 | |
| 32 | namespace v8 { |
| 33 | namespace internal { |
| 34 | |
| 35 | bool DateParser::DayComposer::Write(FixedArray* output) { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame^] | 36 | // Set year to 0 by default. |
| 37 | if (index_ < 1) { |
| 38 | comp_[index_++] = 1; |
| 39 | } |
| 40 | |
| 41 | // Day and month defaults to 1. |
| 42 | while (index_ < kSize) { |
| 43 | comp_[index_++] = 1; |
| 44 | } |
| 45 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 46 | int year = 0; // Default year is 0 (=> 2000) for KJS compatibility. |
| 47 | int month = kNone; |
| 48 | int day = kNone; |
| 49 | |
| 50 | if (named_month_ == kNone) { |
| 51 | if (index_ < 2) return false; |
| 52 | if (index_ == 3 && !IsDay(comp_[0])) { |
| 53 | // YMD |
| 54 | year = comp_[0]; |
| 55 | month = comp_[1]; |
| 56 | day = comp_[2]; |
| 57 | } else { |
| 58 | // MD(Y) |
| 59 | month = comp_[0]; |
| 60 | day = comp_[1]; |
| 61 | if (index_ == 3) year = comp_[2]; |
| 62 | } |
| 63 | } else { |
| 64 | month = named_month_; |
| 65 | if (index_ < 1) return false; |
| 66 | if (index_ == 1) { |
| 67 | // MD or DM |
| 68 | day = comp_[0]; |
| 69 | } else if (!IsDay(comp_[0])) { |
| 70 | // YMD, MYD, or YDM |
| 71 | year = comp_[0]; |
| 72 | day = comp_[1]; |
| 73 | } else { |
| 74 | // DMY, MDY, or DYM |
| 75 | day = comp_[0]; |
| 76 | year = comp_[1]; |
| 77 | } |
| 78 | } |
| 79 | |
| 80 | if (Between(year, 0, 49)) year += 2000; |
| 81 | else if (Between(year, 50, 99)) year += 1900; |
| 82 | |
| 83 | if (!Smi::IsValid(year) || !IsMonth(month) || !IsDay(day)) return false; |
| 84 | |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 85 | output->set(YEAR, Smi::FromInt(year)); |
| 86 | output->set(MONTH, Smi::FromInt(month - 1)); // 0-based |
| 87 | output->set(DAY, Smi::FromInt(day)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 88 | return true; |
| 89 | } |
| 90 | |
| 91 | |
| 92 | bool DateParser::TimeComposer::Write(FixedArray* output) { |
| 93 | // All time slots default to 0 |
| 94 | while (index_ < kSize) { |
| 95 | comp_[index_++] = 0; |
| 96 | } |
| 97 | |
| 98 | int& hour = comp_[0]; |
| 99 | int& minute = comp_[1]; |
| 100 | int& second = comp_[2]; |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame^] | 101 | int& millisecond = comp_[3]; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 102 | |
| 103 | if (hour_offset_ != kNone) { |
| 104 | if (!IsHour12(hour)) return false; |
| 105 | hour %= 12; |
| 106 | hour += hour_offset_; |
| 107 | } |
| 108 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame^] | 109 | if (!IsHour(hour) || !IsMinute(minute) || |
| 110 | !IsSecond(second) || !IsMillisecond(millisecond)) return false; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 111 | |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 112 | output->set(HOUR, Smi::FromInt(hour)); |
| 113 | output->set(MINUTE, Smi::FromInt(minute)); |
| 114 | output->set(SECOND, Smi::FromInt(second)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame^] | 115 | output->set(MILLISECOND, Smi::FromInt(millisecond)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 116 | return true; |
| 117 | } |
| 118 | |
| 119 | bool DateParser::TimeZoneComposer::Write(FixedArray* output) { |
| 120 | if (sign_ != kNone) { |
| 121 | if (hour_ == kNone) hour_ = 0; |
| 122 | if (minute_ == kNone) minute_ = 0; |
| 123 | int total_seconds = sign_ * (hour_ * 3600 + minute_ * 60); |
| 124 | if (!Smi::IsValid(total_seconds)) return false; |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 125 | output->set(UTC_OFFSET, Smi::FromInt(total_seconds)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 126 | } else { |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 127 | output->set_null(UTC_OFFSET); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 128 | } |
| 129 | return true; |
| 130 | } |
| 131 | |
| 132 | const int8_t DateParser::KeywordTable:: |
| 133 | array[][DateParser::KeywordTable::kEntrySize] = { |
| 134 | {'j', 'a', 'n', DateParser::MONTH_NAME, 1}, |
| 135 | {'f', 'e', 'b', DateParser::MONTH_NAME, 2}, |
| 136 | {'m', 'a', 'r', DateParser::MONTH_NAME, 3}, |
| 137 | {'a', 'p', 'r', DateParser::MONTH_NAME, 4}, |
| 138 | {'m', 'a', 'y', DateParser::MONTH_NAME, 5}, |
| 139 | {'j', 'u', 'n', DateParser::MONTH_NAME, 6}, |
| 140 | {'j', 'u', 'l', DateParser::MONTH_NAME, 7}, |
| 141 | {'a', 'u', 'g', DateParser::MONTH_NAME, 8}, |
| 142 | {'s', 'e', 'p', DateParser::MONTH_NAME, 9}, |
| 143 | {'o', 'c', 't', DateParser::MONTH_NAME, 10}, |
| 144 | {'n', 'o', 'v', DateParser::MONTH_NAME, 11}, |
| 145 | {'d', 'e', 'c', DateParser::MONTH_NAME, 12}, |
| 146 | {'a', 'm', '\0', DateParser::AM_PM, 0}, |
| 147 | {'p', 'm', '\0', DateParser::AM_PM, 12}, |
| 148 | {'u', 't', '\0', DateParser::TIME_ZONE_NAME, 0}, |
| 149 | {'u', 't', 'c', DateParser::TIME_ZONE_NAME, 0}, |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame^] | 150 | {'z', '\0', '\0', DateParser::TIME_ZONE_NAME, 0}, |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 151 | {'g', 'm', 't', DateParser::TIME_ZONE_NAME, 0}, |
| 152 | {'c', 'd', 't', DateParser::TIME_ZONE_NAME, -5}, |
| 153 | {'c', 's', 't', DateParser::TIME_ZONE_NAME, -6}, |
| 154 | {'e', 'd', 't', DateParser::TIME_ZONE_NAME, -4}, |
| 155 | {'e', 's', 't', DateParser::TIME_ZONE_NAME, -5}, |
| 156 | {'m', 'd', 't', DateParser::TIME_ZONE_NAME, -6}, |
| 157 | {'m', 's', 't', DateParser::TIME_ZONE_NAME, -7}, |
| 158 | {'p', 'd', 't', DateParser::TIME_ZONE_NAME, -7}, |
| 159 | {'p', 's', 't', DateParser::TIME_ZONE_NAME, -8}, |
| 160 | {'\0', '\0', '\0', DateParser::INVALID, 0}, |
| 161 | }; |
| 162 | |
| 163 | |
| 164 | // We could use perfect hashing here, but this is not a bottleneck. |
| 165 | int DateParser::KeywordTable::Lookup(const uint32_t* pre, int len) { |
| 166 | int i; |
| 167 | for (i = 0; array[i][kTypeOffset] != INVALID; i++) { |
| 168 | int j = 0; |
| 169 | while (j < kPrefixLength && |
| 170 | pre[j] == static_cast<uint32_t>(array[i][j])) { |
| 171 | j++; |
| 172 | } |
| 173 | // Check if we have a match and the length is legal. |
| 174 | // Word longer than keyword is only allowed for month names. |
| 175 | if (j == kPrefixLength && |
| 176 | (len <= kPrefixLength || array[i][kTypeOffset] == MONTH_NAME)) { |
| 177 | return i; |
| 178 | } |
| 179 | } |
| 180 | return i; |
| 181 | } |
| 182 | |
| 183 | |
| 184 | } } // namespace v8::internal |