mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-24 22:02:23 +01:00
Richard Smith
7d89ac98c7
Instead of building one Clang `ASTContext` per compilation, the `--share-cpp-ast` flag causes us to build a single `ASTContext` and share it across all contexts. One new abstraction is added: `CppDomain` represents the Carbon-side view of a Clang AST that might be shared across multiple `SemIR::File`s. This object owns the Clang instance and the AST. For now, we have no isolation between the C++ state exposed to different Carbon compilations, and we have no multiplexing of generated LLVM IR from C++ into different Carbon compilations, so the mode is not usable yet. The plan is to keep it behind a flag until it's ready. Assisted-by: Gemini via Antigravity
58 lines
1.6 KiB
C++
58 lines
1.6 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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#include "toolchain/sem_ir/cpp_file.h"
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#include "clang/AST/Mangle.h"
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#include "clang/Basic/Diagnostic.h"
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#include "clang/Frontend/CompilerInstance.h"
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#include "common/check.h"
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namespace Carbon::SemIR {
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CppFile::CppFile(std::shared_ptr<clang::CompilerInstance> clang,
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llvm::LLVMContext* llvm_context)
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: clang_(std::move(clang)), llvm_context_(llvm_context) {}
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CppFile::~CppFile() = default;
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auto CppFile::diagnostic_options() const -> const clang::DiagnosticOptions& {
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return clang_->getDiagnostics().getDiagnosticOptions();
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}
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auto CppFile::lang_options() const -> const clang::LangOptions& {
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return clang_->getLangOpts();
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}
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auto CppFile::source_manager() -> clang::SourceManager& {
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return clang_->getSourceManager();
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}
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auto CppFile::source_manager() const -> const clang::SourceManager& {
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return clang_->getSourceManager();
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}
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auto CppFile::diagnostics() const -> clang::DiagnosticsEngine& {
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return clang_->getDiagnostics();
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}
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auto CppFile::ast_context() -> clang::ASTContext& {
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return clang_->getASTContext();
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}
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auto CppFile::ast_context() const -> const clang::ASTContext& {
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return clang_->getASTContext();
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}
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auto CppFile::CreateMangleContext() -> void {
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CARBON_CHECK(!mangle_context_);
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mangle_context_.reset(ast_context().createMangleContext());
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}
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auto CppFile::mangle_context() const -> clang::MangleContext& {
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return *mangle_context_;
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}
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} // namespace Carbon::SemIR
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