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pigweed / pigweed / pigweed / a52946355d98485f3f135ee52cbf00297299c6b6
commita52946355d98485f3f135ee52cbf00297299c6b6[log] [tgz]
authorScott James Remnant <keybuk@google.com>Wed Dec 15 13:04:06 2021 -0800
committerCQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com>Fri Dec 24 20:56:06 2021 +0000
treea716a06408287c951caf2951621b435e5d6a6fc2
parent8d7280029d72cb804262cf18eed68dc840e9fd0d [diff]
pw_protobuf: Support decoding from non-seekable Reader

Allowing a StreamDecoder to operate on a non-seekable Reader means that
protobuf messages can be decoded directly from a SocketStream and other
similar streams.

The previous requirement was to support skipping fields, and advancing
to the end of nested length-delimited fields that were not fully read.
Since this use is always forwards, it can be replaced in those streams
by simply reading and discarding the data.

For the requirement of maintaining the bounds of nested length-delimited
fields, the decoder can maintain the position itself as it reads.

StreamDecoder (and StreamDecoder::BytesReader) can still support
seeking where the underlying stream supports it, updating the
tracked position within the bounds of the field.

Change-Id: Id4d1d41ae0492693bb231732546caba8db871cb3
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/74721
Pigweed-Auto-Submit: Scott James Remnant <keybuk@google.com>
Reviewed-by: Yecheng Zhao <zyecheng@google.com>
Commit-Queue: Auto-Submit <auto-submit@pigweed.google.com.iam.gserviceaccount.com>
4 files changed
tree: a716a06408287c951caf2951621b435e5d6a6fc2
  1. build_overrides/
  2. docker/
  3. docs/
  4. pw_allocator/
  5. pw_analog/
  6. pw_android_toolchain/
  7. pw_arduino_build/
  8. pw_assert/
  9. pw_assert_basic/
  10. pw_assert_log/
  11. pw_assert_zephyr/
  12. pw_base64/
  13. pw_bloat/
  14. pw_blob_store/
  15. pw_bluetooth_hci/
  16. pw_boot/
  17. pw_boot_cortex_m/
  18. pw_build/
  19. pw_build_info/
  20. pw_build_mcuxpresso/
  21. pw_bytes/
  22. pw_checksum/
  23. pw_chrono/
  24. pw_chrono_embos/
  25. pw_chrono_freertos/
  26. pw_chrono_stl/
  27. pw_chrono_threadx/
  28. pw_chrono_zephyr/
  29. pw_cli/
  30. pw_console/
  31. pw_containers/
  32. pw_cpu_exception/
  33. pw_cpu_exception_cortex_m/
  34. pw_crypto/
  35. pw_docgen/
  36. pw_doctor/
  37. pw_env_setup/
  38. pw_file/
  39. pw_function/
  40. pw_fuzzer/
  41. pw_hdlc/
  42. pw_hex_dump/
  43. pw_i2c/
  44. pw_interrupt/
  45. pw_interrupt_cortex_m/
  46. pw_interrupt_zephyr/
  47. pw_kvs/
  48. pw_libc/
  49. pw_log/
  50. pw_log_basic/
  51. pw_log_null/
  52. pw_log_rpc/
  53. pw_log_tokenized/
  54. pw_log_zephyr/
  55. pw_malloc/
  56. pw_malloc_freelist/
  57. pw_metric/
  58. pw_minimal_cpp_stdlib/
  59. pw_module/
  60. pw_multisink/
  61. pw_package/
  62. pw_persistent_ram/
  63. pw_polyfill/
  64. pw_preprocessor/
  65. pw_presubmit/
  66. pw_protobuf/
  67. pw_protobuf_compiler/
  68. pw_random/
  69. pw_result/
  70. pw_ring_buffer/
  71. pw_router/
  72. pw_rpc/
  73. pw_snapshot/
  74. pw_software_update/
  75. pw_span/
  76. pw_spi/
  77. pw_status/
  78. pw_stm32cube_build/
  79. pw_stream/
  80. pw_string/
  81. pw_symbolizer/
  82. pw_sync/
  83. pw_sync_baremetal/
  84. pw_sync_embos/
  85. pw_sync_freertos/
  86. pw_sync_stl/
  87. pw_sync_threadx/
  88. pw_sync_zephyr/
  89. pw_sys_io/
  90. pw_sys_io_arduino/
  91. pw_sys_io_baremetal_lm3s6965evb/
  92. pw_sys_io_baremetal_stm32f429/
  93. pw_sys_io_mcuxpresso/
  94. pw_sys_io_stdio/
  95. pw_sys_io_stm32cube/
  96. pw_sys_io_zephyr/
  97. pw_system/
  98. pw_target_runner/
  99. pw_thread/
  100. pw_thread_embos/
  101. pw_thread_freertos/
  102. pw_thread_stl/
  103. pw_thread_threadx/
  104. pw_tls_client/
  105. pw_tls_client_boringssl/
  106. pw_tls_client_mbedtls/
  107. pw_tokenizer/
  108. pw_tool/
  109. pw_toolchain/
  110. pw_trace/
  111. pw_trace_tokenized/
  112. pw_transfer/
  113. pw_unit_test/
  114. pw_varint/
  115. pw_watch/
  116. pw_web_ui/
  117. pw_work_queue/
  118. targets/
  119. third_party/
  120. zephyr/
  121. .dockerignore ⇨ .gitignore
  122. activate.sh ⇨ bootstrap.sh
  123. .bazelignore
  124. .bazelrc
  125. .clang-format
  126. .clang-tidy
  127. .eslintrc.json
  128. .gitattributes
  129. .gitignore
  130. .gn
  131. .prettierrc.js
  132. .pylintrc
  133. activate.bat
  134. Android.bp
  135. AUTHORS
  136. bootstrap.bat
  137. bootstrap.sh
  138. BUILD.bazel
  139. BUILD.gn
  140. BUILDCONFIG.gn
  141. CMakeLists.txt
  142. Kconfig.zephyr
  143. LICENSE
  144. modules.gni
  145. OWNERS
  146. package.json
  147. PW_PLUGINS
  148. README.md
  149. tsconfig.json
  150. WORKSPACE
  151. yarn.lock
README.md

Pigweed

Pigweed is an open source collection of embedded-targeted libraries–or as we like to call them, modules. These modules are building blocks and infrastructure that enable faster and more reliable development on small-footprint MMU-less 32-bit microcontrollers like the STMicroelectronics STM32L452 or the Nordic nRF52832.

For more information please see our website: https://pigweed.dev/

Links