forked from OSchip/llvm-project
77 lines
2.4 KiB
C++
77 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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/// \brief 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_SIMPLE_FORM_CONTEXT_H
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#define LLVM_CLANG_SIMPLE_FORM_CONTEXT_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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/// \brief 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,
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DiagOpts.get())),
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Files((FileSystemOptions())),
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Sources(*Diagnostics, Files),
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Rewrite(Sources, Options) {
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Diagnostics->setClient(new IgnoringDiagConsumer, true);
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}
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~SimpleFormatContext() { }
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FileID createInMemoryFile(StringRef Name, StringRef Content) {
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llvm::MemoryBuffer *Source = llvm::MemoryBuffer::getMemBuffer(Content);
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const FileEntry *Entry =
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Files.getVirtualFile(Name, Source->getBufferSize(), 0);
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Sources.overrideFileContents(Entry, Source);
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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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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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