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https://github.com/carbon-language/carbon-lang.git
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Jon Ross-Perkins
a196b9840f
This patches bazel_clang_tidy handling of headers. I found an equivalent change at https://github.com/erenon/bazel_clang_tidy/pull/13, but that was [already rejected](https://github.com/erenon/bazel_clang_tidy/pull/13#issuecomment-1047007424). Per the criticism, this will result in redundant processing of headers. The project instead uses `HeaderFilterRegex: ".*"`, but that results in two problems: 1. When running with `-k`, errors are repeated when a header is included more than once, which is common. 2. clang-tidy including errors from headers that are included from other modules (e.g., abseil-cpp); filtering correctly is difficult. Given the trade-offs and options (including forking), I thought patching was preferable so long as it remains narrow.
46 lines
1.5 KiB
C++
46 lines
1.5 KiB
C++
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#ifndef CARBON_COMMON_INIT_LLVM_H_
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#define CARBON_COMMON_INIT_LLVM_H_
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/Support/InitLLVM.h"
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namespace Carbon {
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// A RAII class to handle initializing LLVM and shutting it down. An instance of
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// this class should be created in the `main` function of each Carbon binary
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// that interacts with LLVM, before `argc` and `argv` are first inspected.
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class InitLLVM {
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public:
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// Initializes LLVM for use by a Carbon binary. On Windows, `argc` and `argv`
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// are updated to refer to properly-encoded UTF-8 versions of the command line
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// arguments.
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explicit InitLLVM(int& argc, char**& argv);
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// Shuts down LLVM.
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~InitLLVM() = default;
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private:
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using InitializeTargetsFn = auto() -> void;
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llvm::InitLLVM init_llvm_;
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llvm::SmallVector<char*> args_;
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// A pointer to the LLVM target initialization function, if :all_llvm_targets
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// is linked in. Otherwise nullptr.
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// NOLINTNEXTLINE(readability-identifier-naming): Constant after static init.
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static InitializeTargetsFn* InitializeTargets;
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// The initializer of this static data member populates `InitializeTargets`.
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// Defined only if :all_llvm_targets is linked in. This is a member so that
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// it has access to `InitializeTargets`.
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static const char RegisterTargets;
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};
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} // namespace Carbon
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#endif // CARBON_COMMON_INIT_LLVM_H_
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