OptionStrCmp.h

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//===- OptionStrCmp.h - Option String Comparison ----------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
 
#ifndef LLVM_SUPPORT_OPTIONSTRCMP_H
#define LLVM_SUPPORT_OPTIONSTRCMP_H
 
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/StringRef.h"
 
namespace llvm {
 
// Comparison function for Option strings (option names & prefixes).
// The ordering is *almost* case-insensitive lexicographic, with an exception.
// '\0' comes at the end of the alphabet instead of the beginning (thus options
// precede any other options which prefix them). Additionally, if two options
// are identical ignoring case, they are ordered according to case sensitive
// ordering if `FallbackCaseSensitive` is true.
int StrCmpOptionName(StringRef A, StringRef B,
                     bool FallbackCaseSensitive = true);
 
// Comparison function for Option prefixes.
int StrCmpOptionPrefixes(ArrayRef<StringRef> APrefixes,
                         ArrayRef<StringRef> BPrefixes);
 
} // namespace llvm
 
#endif // LLVM_SUPPORT_OPTIONSTRCMP_H