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AK: Add a retreat(count) method to GenericLexer
This method can be used to rewind a constant amount backwards in the source instead of one by one with retract()
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@ -56,6 +56,12 @@ public:
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--m_index;
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}
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constexpr void retreat(size_t count)
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{
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VERIFY(m_index >= count);
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m_index -= count;
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}
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constexpr char consume()
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{
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VERIFY(!is_eof());
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