Платформа ЦРНП "Мирокод" для разработки проектов
https://git.mirocod.ru
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48 lines
773 B
48 lines
773 B
package match |
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import ( |
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"fmt" |
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"unicode/utf8" |
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) |
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type Range struct { |
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Lo, Hi rune |
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Not bool |
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} |
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func NewRange(lo, hi rune, not bool) Range { |
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return Range{lo, hi, not} |
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} |
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func (self Range) Len() int { |
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return lenOne |
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} |
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func (self Range) Match(s string) bool { |
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r, w := utf8.DecodeRuneInString(s) |
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if len(s) > w { |
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return false |
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} |
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inRange := r >= self.Lo && r <= self.Hi |
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return inRange == !self.Not |
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} |
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func (self Range) Index(s string) (int, []int) { |
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for i, r := range s { |
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if self.Not != (r >= self.Lo && r <= self.Hi) { |
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return i, segmentsByRuneLength[utf8.RuneLen(r)] |
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} |
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} |
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return -1, nil |
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} |
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func (self Range) String() string { |
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var not string |
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if self.Not { |
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not = "!" |
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} |
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return fmt.Sprintf("<range:%s[%s,%s]>", not, string(self.Lo), string(self.Hi)) |
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}
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