pw_span: Add IWYU pragma

More context behind what these are:
https://github.com/include-what-you-use/include-what-you-use/blob/master/docs/IWYUPragmas.md

Some projects (including some internal Google infrastructure) use these
pragmas to help surface unused includes. Without this pragma, certain
tooling would believe that all includes to pw_span/span.h were
unnecessary, and/or that pw_span/internal/span_impl.h should instead be
used.

It's likely that other files would also benefit from these pragmas, but
this particular one is currently causing trouble for me.

Change-Id: Ia2de79e6ec8ed356289c809286d73e953fda4506
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/112511
Commit-Queue: Anqi Dong <anqid@google.com>
Reviewed-by: Keir Mierle <keir@google.com>
Pigweed-Auto-Submit: Anqi Dong <anqid@google.com>
1 file changed
tree: fdbed361edf5a4920134d861a69b92a9bad13555
  1. .allstar/
  2. .vscode/
  3. build_overrides/
  4. docker/
  5. docs/
  6. pw_allocator/
  7. pw_analog/
  8. pw_android_toolchain/
  9. pw_arduino_build/
  10. pw_assert/
  11. pw_assert_basic/
  12. pw_assert_log/
  13. pw_assert_tokenized/
  14. pw_assert_zephyr/
  15. pw_base64/
  16. pw_bloat/
  17. pw_blob_store/
  18. pw_bluetooth/
  19. pw_bluetooth_hci/
  20. pw_boot/
  21. pw_boot_cortex_m/
  22. pw_build/
  23. pw_build_info/
  24. pw_build_mcuxpresso/
  25. pw_bytes/
  26. pw_checksum/
  27. pw_chrono/
  28. pw_chrono_embos/
  29. pw_chrono_freertos/
  30. pw_chrono_stl/
  31. pw_chrono_threadx/
  32. pw_chrono_zephyr/
  33. pw_cli/
  34. pw_compilation_testing/
  35. pw_console/
  36. pw_containers/
  37. pw_cpu_exception/
  38. pw_cpu_exception_cortex_m/
  39. pw_crypto/
  40. pw_digital_io/
  41. pw_docgen/
  42. pw_doctor/
  43. pw_env_setup/
  44. pw_file/
  45. pw_function/
  46. pw_fuzzer/
  47. pw_hdlc/
  48. pw_hex_dump/
  49. pw_i2c/
  50. pw_i2c_mcuxpresso/
  51. pw_ide/
  52. pw_interrupt/
  53. pw_interrupt_cortex_m/
  54. pw_interrupt_zephyr/
  55. pw_kvs/
  56. pw_libc/
  57. pw_log/
  58. pw_log_android/
  59. pw_log_basic/
  60. pw_log_null/
  61. pw_log_rpc/
  62. pw_log_string/
  63. pw_log_tokenized/
  64. pw_log_zephyr/
  65. pw_malloc/
  66. pw_malloc_freelist/
  67. pw_metric/
  68. pw_minimal_cpp_stdlib/
  69. pw_module/
  70. pw_multisink/
  71. pw_package/
  72. pw_persistent_ram/
  73. pw_polyfill/
  74. pw_preprocessor/
  75. pw_presubmit/
  76. pw_protobuf/
  77. pw_protobuf_compiler/
  78. pw_random/
  79. pw_result/
  80. pw_ring_buffer/
  81. pw_router/
  82. pw_rpc/
  83. pw_rust/
  84. pw_snapshot/
  85. pw_software_update/
  86. pw_span/
  87. pw_spi/
  88. pw_status/
  89. pw_stm32cube_build/
  90. pw_stream/
  91. pw_string/
  92. pw_symbolizer/
  93. pw_sync/
  94. pw_sync_baremetal/
  95. pw_sync_embos/
  96. pw_sync_freertos/
  97. pw_sync_stl/
  98. pw_sync_threadx/
  99. pw_sync_zephyr/
  100. pw_sys_io/
  101. pw_sys_io_arduino/
  102. pw_sys_io_baremetal_lm3s6965evb/
  103. pw_sys_io_baremetal_stm32f429/
  104. pw_sys_io_emcraft_sf2/
  105. pw_sys_io_mcuxpresso/
  106. pw_sys_io_stdio/
  107. pw_sys_io_stm32cube/
  108. pw_sys_io_zephyr/
  109. pw_system/
  110. pw_target_runner/
  111. pw_thread/
  112. pw_thread_embos/
  113. pw_thread_freertos/
  114. pw_thread_stl/
  115. pw_thread_threadx/
  116. pw_tls_client/
  117. pw_tls_client_boringssl/
  118. pw_tls_client_mbedtls/
  119. pw_tokenizer/
  120. pw_tool/
  121. pw_toolchain/
  122. pw_trace/
  123. pw_trace_tokenized/
  124. pw_transfer/
  125. pw_unit_test/
  126. pw_varint/
  127. pw_watch/
  128. pw_web/
  129. pw_work_queue/
  130. targets/
  131. third_party/
  132. ts/
  133. zephyr/
  134. .bazelignore
  135. .bazelrc
  136. .clang-format
  137. .clang-tidy
  138. .eslintrc.json
  139. .gitattributes
  140. .gitignore
  141. .gn
  142. .prettierrc.js
  143. .pw_ide.yaml
  144. .pylintrc
  145. activate.bat
  146. Android.bp
  147. AUTHORS
  148. bootstrap.bat
  149. bootstrap.sh
  150. BUILD.bazel
  151. BUILD.gn
  152. BUILDCONFIG.gn
  153. CMakeLists.txt
  154. jest.config.ts
  155. Kconfig.zephyr
  156. LICENSE
  157. modules.gni
  158. OWNERS
  159. package-lock.json
  160. package.json
  161. PIGWEED_MODULES
  162. PW_PLUGINS
  163. README.md
  164. rollup.config.js
  165. tsconfig.json
  166. WORKSPACE
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