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//===--- Comments.cpp - Comment Manipulation -------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
///
/// \file
/// \brief Implements comment manipulation.
///
//===----------------------------------------------------------------------===//
#include "Comments.h"
namespace clang {
namespace format {
StringRef getLineCommentIndentPrefix(StringRef Comment) {
static const char *const KnownPrefixes[] = {"///", "//", "//!"};
StringRef LongestPrefix;
for (StringRef KnownPrefix : KnownPrefixes) {
if (Comment.startswith(KnownPrefix)) {
size_t PrefixLength = KnownPrefix.size();
while (PrefixLength < Comment.size() && Comment[PrefixLength] == ' ')
++PrefixLength;
if (PrefixLength > LongestPrefix.size())
LongestPrefix = Comment.substr(0, PrefixLength);
}
}
return LongestPrefix;
}
} // namespace format
} // namespace clang
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