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Split TL and RPC introducing TLBuffer instead of RpcBuffer
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,97 @@ | ||
| // Compiler for PHP (aka KPHP) | ||
| // Copyright (c) 2024 LLC «V Kontakte» | ||
| // Distributed under the GPL v3 License, see LICENSE.notice.txt | ||
|
|
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| #include "runtime-light/tl/tl-core.h" | ||
|
|
||
| namespace tl { | ||
| void TLBuffer::store_string(std::string_view str) noexcept { | ||
| const char *str_buf{str.data()}; | ||
| size_t str_len{str.size()}; | ||
| uint8_t size_len{}; | ||
| if (str_len <= SMALL_STRING_MAX_LEN) { | ||
| size_len = SMALL_STRING_SIZE_LEN; | ||
| store_trivial<uint8_t>(str_len); | ||
| } else if (str_len <= MEDIUM_STRING_MAX_LEN) { | ||
| size_len = MEDIUM_STRING_SIZE_LEN + 1; | ||
| store_trivial<uint8_t>(MEDIUM_STRING_MAGIC); | ||
| store_trivial<uint8_t>(str_len & 0xff); | ||
| store_trivial<uint8_t>((str_len >> 8) & 0xff); | ||
| store_trivial<uint8_t>((str_len >> 16) & 0xff); | ||
| } else { | ||
| php_warning("large strings aren't supported"); | ||
| size_len = SMALL_STRING_SIZE_LEN; | ||
| str_len = 0; | ||
| store_trivial<uint8_t>(str_len); | ||
| } | ||
| store_bytes(str_buf, str_len); | ||
|
|
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| const auto total_len{size_len + str_len}; | ||
| const auto total_len_with_padding{(total_len + 3) & ~static_cast<string::size_type>(3)}; | ||
| const auto padding{total_len_with_padding - total_len}; | ||
|
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| std::array padding_array{'\0', '\0', '\0', '\0'}; | ||
| store_bytes(padding_array.data(), padding); | ||
| } | ||
|
|
||
| std::string_view TLBuffer::fetch_string() noexcept { | ||
| uint8_t first_byte{}; | ||
| if (const auto opt_first_byte{fetch_trivial<uint8_t>()}; opt_first_byte) { | ||
| first_byte = opt_first_byte.value(); | ||
| } else { | ||
| return {}; // TODO: error handling | ||
| } | ||
|
|
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| uint8_t size_len{}; | ||
| uint64_t string_len{}; | ||
| switch (first_byte) { | ||
| case LARGE_STRING_MAGIC: { | ||
| if (remaining() < LARGE_STRING_SIZE_LEN) { | ||
| return {}; // TODO: error handling | ||
| } | ||
| size_len = LARGE_STRING_SIZE_LEN + 1; | ||
| const auto first{static_cast<uint64_t>(fetch_trivial<uint8_t>().value())}; | ||
| const auto second{static_cast<uint64_t>(fetch_trivial<uint8_t>().value()) << 8}; | ||
| const auto third{static_cast<uint64_t>(fetch_trivial<uint8_t>().value()) << 16}; | ||
| const auto fourth{static_cast<uint64_t>(fetch_trivial<uint8_t>().value()) << 24}; | ||
| const auto fifth{static_cast<uint64_t>(fetch_trivial<uint8_t>().value()) << 32}; | ||
| const auto sixth{static_cast<uint64_t>(fetch_trivial<uint8_t>().value()) << 40}; | ||
| const auto seventh{static_cast<uint64_t>(fetch_trivial<uint8_t>().value()) << 48}; | ||
| string_len = first | second | third | fourth | fifth | sixth | seventh; | ||
|
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| const auto total_len_with_padding{(size_len + string_len + 3) & ~static_cast<uint64_t>(3)}; | ||
| adjust(total_len_with_padding - size_len); | ||
| php_warning("large strings aren't supported"); | ||
| return {}; | ||
| } | ||
| case MEDIUM_STRING_MAGIC: { | ||
| if (remaining() < MEDIUM_STRING_SIZE_LEN) { | ||
| return {}; // TODO: error handling | ||
| } | ||
| size_len = MEDIUM_STRING_SIZE_LEN + 1; | ||
| const auto first{static_cast<uint64_t>(fetch_trivial<uint8_t>().value())}; | ||
| const auto second{static_cast<uint64_t>(fetch_trivial<uint8_t>().value()) << 8}; | ||
| const auto third{static_cast<uint64_t>(fetch_trivial<uint8_t>().value()) << 16}; | ||
| string_len = first | second | third; | ||
|
|
||
| if (string_len <= SMALL_STRING_MAX_LEN) { | ||
| php_warning("long string's length is less than 254"); | ||
| } | ||
| break; | ||
| } | ||
| default: { | ||
| size_len = SMALL_STRING_SIZE_LEN; | ||
| string_len = static_cast<uint64_t>(first_byte); | ||
| break; | ||
| } | ||
| } | ||
| const auto total_len_with_padding{(size_len + string_len + 3) & ~static_cast<uint64_t>(3)}; | ||
| if (m_remaining < total_len_with_padding - size_len) { | ||
| return {}; // TODO: error handling | ||
| } | ||
|
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| std::string_view response{data() + m_pos, static_cast<size_t>(string_len)}; | ||
| adjust(total_len_with_padding - size_len); | ||
| return response; | ||
| } | ||
| } // namespace tl |
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