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Regex: use StartDesc to early out when not searching
Early out as well if we do not find any potential start position.
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@ -183,8 +183,18 @@ public:
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const bool search = (flags & RegexExecFlags::Search);
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Utf8It start{m_begin};
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if (search and m_program.start_desc)
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if (m_program.start_desc)
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{
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if (search)
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{
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to_next_start(start, m_end, *m_program.start_desc);
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if (start == m_end) // If start_desc is not null, it means we consume at least one char
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return false;
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}
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else if (start != m_end and
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not m_program.start_desc->map[std::min(*start, CompiledRegex::StartDesc::other)])
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return false;
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}
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return exec_program(start, Thread{&m_program.instructions[search ? 0 : CompiledRegex::search_prefix_size], nullptr});
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}
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