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AK: Add a retreat(count) method to GenericLexer

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This method can be used to rewind a constant amount backwards in the
source instead of one by one with retract()
This commit is contained in:
Idan Horowitz 2021-07-11 20:58:38 +03:00 • committed by Linus Groh
parent b2daaca5ee
commit 39a9cf4bb4
1 changed files with 6 additions and 0 deletions
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6
AK/GenericLexer.h
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@ -56,6 +56,12 @@ public:
--m_index; --m_index;
} }
constexpr void retreat(size_t count)
{
VERIFY(m_index >= count);
m_index -= count;
}
constexpr char consume() constexpr char consume()
{ {
VERIFY(!is_eof()); VERIFY(!is_eof());