forked from OSchip/llvm-project
70 lines
2.1 KiB
C++
70 lines
2.1 KiB
C++
//===--- GlobList.h ---------------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_GLOBLIST_H
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#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_GLOBLIST_H
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#include "clang/Basic/LLVM.h"
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/ADT/StringMap.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/Support/Regex.h"
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namespace clang {
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namespace tidy {
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/// Read-only set of strings represented as a list of positive and negative
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/// globs.
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///
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/// Positive globs add all matched strings to the set, negative globs remove
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/// them in the order of appearance in the list.
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class GlobList {
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public:
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virtual ~GlobList() = default;
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/// \p Globs is a comma-separated list of globs (only the '*' metacharacter is
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/// supported) with an optional '-' prefix to denote exclusion.
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///
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/// An empty \p Globs string is interpreted as one glob that matches an empty
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/// string.
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///
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/// \p KeepNegativeGlobs a bool flag indicating whether to keep negative
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/// globs from \p Globs or not. When false, negative globs are simply ignored.
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GlobList(StringRef Globs, bool KeepNegativeGlobs = true);
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/// Returns \c true if the pattern matches \p S. The result is the last
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/// matching glob's Positive flag.
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virtual bool contains(StringRef S) const;
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private:
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struct GlobListItem {
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bool IsPositive;
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llvm::Regex Regex;
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};
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SmallVector<GlobListItem, 0> Items;
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};
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/// A \p GlobList that caches search results, so that search is performed only
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/// once for the same query.
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class CachedGlobList final : public GlobList {
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public:
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using GlobList::GlobList;
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/// \see GlobList::contains
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bool contains(StringRef S) const override;
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private:
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enum Tristate { None, Yes, No };
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mutable llvm::StringMap<Tristate> Cache;
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};
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} // namespace tidy
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} // namespace clang
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#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_GLOBLIST_H
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