Improve scan
This commit is contained in:
379
src/parser3.h
379
src/parser3.h
@@ -16,120 +16,307 @@
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namespace parser3 {
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class NumDfa {
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struct NumDfa {
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constexpr static uint64_t num_dfa_table[256] = {
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6d80db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6d86d80db6db6ull, 0xd8cdb6336db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb0a9edaa4927aaull, 0xdb0ab0daa492c2aull, 0xdb0ab0daa492c2aull,
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0xdb0ab0daa492c2aull, 0xdb0ab0daa492c2aull, 0xdb0ab0daa492c2aull,
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0xdb0ab0daa492c2aull, 0xdb0ab0daa492c2aull, 0xdb0ab0daa492c2aull,
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0xdb0ab0daa492c2aull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xd98db6636636db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xd98db6636636db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull, 0xdb6db6db6db6db6ull,
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0xdb6db6db6db6db6ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x36000ull,
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0x0ull,
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0x36600ull,
|
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0x12480000000000ull,
|
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0x0ull,
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0x780aa47b091ec00ull,
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0x780aa47aa91ea80ull,
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0x780aa47aa91ea80ull,
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0x780aa47aa91ea80ull,
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0x780aa47aa91ea80ull,
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0x780aa47aa91ea80ull,
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0x780aa47aa91ea80ull,
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0x780aa47aa91ea80ull,
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0x780aa47aa91ea80ull,
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0x780aa47aa91ea80ull,
|
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
|
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0x0ull,
|
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0xc30c000000000ull,
|
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0x0ull,
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0x0ull,
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0x0ull,
|
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0xc30c000000000ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
|
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0x0ull,
|
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
|
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
|
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0x0ull,
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0x0ull,
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0x0ull,
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0x0ull,
|
||||
0x0ull,
|
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0x0ull,
|
||||
0x0ull,
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0x0ull,
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||||
0x0ull,
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||||
0x0ull,
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||||
};
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uint8_t state = 36;
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||||
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public:
|
||||
// Restore this dfa to its start state
|
||||
void reset() { state = 36; }
|
||||
void reset() { state = 6; }
|
||||
// Return true if this dfa is in an accept state. You probably want to call
|
||||
// scan until the match ends first.
|
||||
bool accept() const {
|
||||
return (state & 63) == 18 || (state & 63) == 42 || (state & 63) == 48 ||
|
||||
(state & 63) == 30;
|
||||
return (state & 63) == 30 || (state & 63) == 36 || (state & 63) == 48 ||
|
||||
(state & 63) == 42;
|
||||
}
|
||||
// return value either points to the first byte which does not match, or
|
||||
// bufEnd. Leaves the dfa in the last state of the match.
|
||||
const char *scan(const char *buf, const char *bufEnd) {
|
||||
auto state_ = state;
|
||||
for (;;) {
|
||||
constexpr int kStride = 16;
|
||||
if (bufEnd - buf < kStride) [[unlikely]] {
|
||||
while (buf != bufEnd) {
|
||||
uint64_t row = num_dfa_table[uint8_t(*buf)];
|
||||
auto next = row >> (state & 63);
|
||||
if ((next & 63) == 54) {
|
||||
auto next = row >> (state_ & 63);
|
||||
if ((next & 63) == 0) {
|
||||
break;
|
||||
}
|
||||
state = next;
|
||||
state_ = next;
|
||||
++buf;
|
||||
}
|
||||
state = state_;
|
||||
return buf;
|
||||
}
|
||||
for (int i = 0; i < kStride; ++i) {
|
||||
uint64_t row = num_dfa_table[uint8_t(*buf)];
|
||||
auto next = row >> (state_ & 63);
|
||||
if ((next & 63) == 0) {
|
||||
state = state_;
|
||||
return buf;
|
||||
}
|
||||
state_ = next;
|
||||
++buf;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private:
|
||||
uint64_t state = 6;
|
||||
};
|
||||
|
||||
typedef PRESERVE_NONE WeaselJsonStatus (*Continuation)(struct Parser3 *,
|
||||
|
||||
Reference in New Issue
Block a user