58 lines
1.6 KiB
C
58 lines
1.6 KiB
C
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//===-- GlobPattern.h - glob pattern matcher implementation -*- 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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//
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// This file implements a glob pattern matcher. The glob pattern is the
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// rule used by the shell.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_SUPPORT_GLOB_PATTERN_H
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#define LLVM_SUPPORT_GLOB_PATTERN_H
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#include "llvm/ADT/BitVector.h"
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#include "llvm/ADT/Optional.h"
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#include "llvm/Support/Error.h"
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#include <vector>
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// This class represents a glob pattern. Supported metacharacters
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// are "*", "?", "\", "[<chars>]", "[^<chars>]", and "[!<chars>]".
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namespace llvm {
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template <typename T> class ArrayRef;
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class StringRef;
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class GlobPattern {
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public:
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static Expected<GlobPattern> create(StringRef Pat);
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bool match(StringRef S) const;
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// Returns true for glob pattern "*". Can be used to avoid expensive
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// preparation/acquisition of the input for match().
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bool isTrivialMatchAll() const {
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if (Prefix && Prefix->empty()) {
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assert(!Suffix);
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return true;
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}
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return false;
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}
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private:
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bool matchOne(ArrayRef<BitVector> Pat, StringRef S) const;
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// Parsed glob pattern.
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std::vector<BitVector> Tokens;
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// The following members are for optimization.
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Optional<StringRef> Exact;
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Optional<StringRef> Prefix;
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Optional<StringRef> Suffix;
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};
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}
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#endif // LLVM_SUPPORT_GLOB_PATTERN_H
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