[all-commits] [llvm/llvm-project] 15ae01: [clangd][Support] Outline LSP payload decode error...

[David Zbarsky via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 15ae01dd24261bd70947aab884098e5dcd4096dd
      https://github.com/llvm/llvm-project/commit/15ae01dd24261bd70947aab884098e5dcd4096dd
  Author: David Zbarsky <dzbarsky at gmail.com>
  Date:   2026-07-17 (Fri, 17 Jul 2026)

  Changed paths:
    M clang-tools-extra/clangd/CMakeLists.txt
    A clang-tools-extra/clangd/LSPBinder.cpp
    M clang-tools-extra/clangd/LSPBinder.h
    M llvm/include/llvm/Support/LSP/Transport.h
    M llvm/lib/Support/LSP/Transport.cpp
    M llvm/utils/gn/secondary/clang-tools-extra/clangd/BUILD.gn
    M utils/bazel/llvm-project-overlay/clang-tools-extra/clangd/BUILD.bazel

  Log Message:
  -----------
  [clangd][Support] Outline LSP payload decode errors (#203121)

Move failed payload handling from `clangd::LSPBinder::parse<T>` and
`llvm::lsp::MessageHandler::parse<T>` into their non-inline
`handleParseError` functions, while keeping successful payload
conversion specialized in each `parse<T>` instantiation.

For a Darwin arm64 build, stripped clangd decreased by 32,848 bytes and
`__TEXT,__text` decreased by 25,180 bytes.

`ClangdTests --gtest_filter=LSPBinderTest.*` passes, and
`llvm/lib/Support/LSP/Transport.cpp` passes a standalone syntax compile.

Work towards #202616

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