mirror of
https://github.com/simdjson/simdjson
synced 2026-06-08 17:27:07 +00:00
Jinyang He
48 lines
1.6 KiB
C++
48 lines
1.6 KiB
C++
#ifndef SIMDJSON_LASX_STRINGPARSING_DEFS_H
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#define SIMDJSON_LASX_STRINGPARSING_DEFS_H
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#ifndef SIMDJSON_CONDITIONAL_INCLUDE
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#include "simdjson/lasx/base.h"
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#include "simdjson/lasx/simd.h"
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#include "simdjson/lasx/bitmanipulation.h"
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#endif // SIMDJSON_CONDITIONAL_INCLUDE
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namespace simdjson {
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namespace lasx {
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namespace {
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using namespace simd;
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// Holds backslashes and quotes locations.
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struct backslash_and_quote {
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public:
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static constexpr uint32_t BYTES_PROCESSED = 32;
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simdjson_inline static backslash_and_quote copy_and_find(const uint8_t *src, uint8_t *dst);
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simdjson_inline bool has_quote_first() { return ((bs_bits - 1) & quote_bits) != 0; }
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simdjson_inline bool has_backslash() { return bs_bits != 0; }
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simdjson_inline int quote_index() { return trailing_zeroes(quote_bits); }
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simdjson_inline int backslash_index() { return trailing_zeroes(bs_bits); }
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uint32_t bs_bits;
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uint32_t quote_bits;
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}; // struct backslash_and_quote
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simdjson_inline backslash_and_quote backslash_and_quote::copy_and_find(const uint8_t *src, uint8_t *dst) {
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// this can read up to 31 bytes beyond the buffer size, but we require
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// SIMDJSON_PADDING of padding
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static_assert(SIMDJSON_PADDING >= (BYTES_PROCESSED - 1), "backslash and quote finder must process fewer than SIMDJSON_PADDING bytes");
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simd8<uint8_t> v(src);
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v.store(dst);
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return {
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static_cast<uint32_t>((v == '\\').to_bitmask()), // bs_bits
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static_cast<uint32_t>((v == '"').to_bitmask()), // quote_bits
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};
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}
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} // unnamed namespace
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} // namespace lasx
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} // namespace simdjson
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#endif // SIMDJSON_LASX_STRINGPARSING_DEFS_H
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