fc51490baf
This patch moves the virtual file system form clang to llvm so it can be
used by more projects.
Concretely the patch:
- Moves VirtualFileSystem.{h|cpp} from clang/Basic to llvm/Support.
- Moves the corresponding unit test from clang to llvm.
- Moves the vfs namespace from clang::vfs to llvm::vfs.
- Formats the lines affected by this change, mostly this is the result of
the added llvm namespace.
RFC on the mailing list:
http://lists.llvm.org/pipermail/llvm-dev/2018-October/126657.html
Differential revision: https://reviews.llvm.org/D52783
llvm-svn: 344140
74 lines
2.4 KiB
C++
74 lines
2.4 KiB
C++
//===--- SimpleFormatContext.h ----------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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/// \file
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///
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/// Defines a utility class for use of clang-format in libclang
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_LIB_INDEX_SIMPLEFORMATCONTEXT_H
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#define LLVM_CLANG_LIB_INDEX_SIMPLEFORMATCONTEXT_H
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#include "clang/Basic/Diagnostic.h"
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#include "clang/Basic/DiagnosticOptions.h"
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#include "clang/Basic/FileManager.h"
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#include "clang/Basic/LangOptions.h"
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#include "clang/Basic/SourceManager.h"
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#include "clang/Rewrite/Core/Rewriter.h"
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#include "llvm/Support/FileSystem.h"
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#include "llvm/Support/Path.h"
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#include "llvm/Support/raw_ostream.h"
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namespace clang {
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namespace index {
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/// A small class to be used by libclang clients to format
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/// a declaration string in memory. This object is instantiated once
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/// and used each time a formatting is needed.
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class SimpleFormatContext {
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public:
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SimpleFormatContext(LangOptions Options)
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: DiagOpts(new DiagnosticOptions()),
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Diagnostics(new DiagnosticsEngine(new DiagnosticIDs, DiagOpts.get())),
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InMemoryFileSystem(new llvm::vfs::InMemoryFileSystem),
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Files(FileSystemOptions(), InMemoryFileSystem),
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Sources(*Diagnostics, Files), Rewrite(Sources, Options) {
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Diagnostics->setClient(new IgnoringDiagConsumer, true);
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}
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FileID createInMemoryFile(StringRef Name, StringRef Content) {
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InMemoryFileSystem->addFile(Name, 0,
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llvm::MemoryBuffer::getMemBuffer(Content));
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const FileEntry *Entry = Files.getFile(Name);
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assert(Entry != nullptr);
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return Sources.createFileID(Entry, SourceLocation(), SrcMgr::C_User);
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}
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std::string getRewrittenText(FileID ID) {
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std::string Result;
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llvm::raw_string_ostream OS(Result);
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Rewrite.getEditBuffer(ID).write(OS);
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OS.flush();
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return Result;
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}
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IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts;
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IntrusiveRefCntPtr<DiagnosticsEngine> Diagnostics;
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IntrusiveRefCntPtr<llvm::vfs::InMemoryFileSystem> InMemoryFileSystem;
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FileManager Files;
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SourceManager Sources;
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Rewriter Rewrite;
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};
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} // end namespace index
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} // end namespace clang
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#endif
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