BestFirstSearch: switch to Long as State key #3942
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State column is unlikely to exceed 24 bits (or 16+ mln bytes), but even in cases when it might, a given token (that is, at a given State depth) cannot conceivably be formatted at two different column values which are a multiple of 2^24 bytes apart. Hence, let's form state key by keeping indentation (just like before) at 8 bits, limiting column to 24 bits and combining with depth in the remaining 32 bits (and this combining is what ensures no hash conflict).
tgodzik
approved these changes
Apr 28, 2024
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State column is unlikely to exceed 24 bits (or 16+ mln bytes), but even in cases when it might, a given token (that is, at a given State depth) cannot conceivably be formatted at two different column values which are a multiple of 2^24 bytes apart.
Hence, let's form state key by keeping indentation (just like before) at 8 bits, limiting column to 24 bits and combining with depth in the remaining 32 bits (and this combining is what ensures no hash conflict).