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//===-- GlobPattern.h - glob pattern matcher implementation -*- C++ -*-----===//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
// This file implements a glob pattern matcher. The glob pattern is the
// rule used by the shell.
#include "llvm/ADT/BitVector.h"
#include "llvm/ADT/Optional.h"
#include "llvm/Support/Error.h"
#include <vector>
// This class represents a glob pattern. Supported metacharacters
// are "*", "?", "\", "[<chars>]", "[^<chars>]", and "[!<chars>]".
namespace llvm {
template <typename T> class ArrayRef;
class StringRef;
class GlobPattern {
static Expected<GlobPattern> create(StringRef Pat);
bool match(StringRef S) const;
// Returns true for glob pattern "*". Can be used to avoid expensive
// preparation/acquisition of the input for match().
bool isTrivialMatchAll() const {
if (Prefix && Prefix->empty()) {
return true;
return false;
bool matchOne(ArrayRef<BitVector> Pat, StringRef S) const;
// Parsed glob pattern.
std::vector<BitVector> Tokens;
// The following members are for optimization.
Optional<StringRef> Exact;
Optional<StringRef> Prefix;
Optional<StringRef> Suffix;