llvm/lib/Support/StringExtras.cpp
Chandler Carruth e3e43d9d57 Sort the remaining #include lines in include/... and lib/....
I did this a long time ago with a janky python script, but now
clang-format has built-in support for this. I fed clang-format every
line with a #include and let it re-sort things according to the precise
LLVM rules for include ordering baked into clang-format these days.

I've reverted a number of files where the results of sorting includes
isn't healthy. Either places where we have legacy code relying on
particular include ordering (where possible, I'll fix these separately)
or where we have particular formatting around #include lines that
I didn't want to disturb in this patch.

This patch is *entirely* mechanical. If you get merge conflicts or
anything, just ignore the changes in this patch and run clang-format
over your #include lines in the files.

Sorry for any noise here, but it is important to keep these things
stable. I was seeing an increasing number of patches with irrelevant
re-ordering of #include lines because clang-format was used. This patch
at least isolates that churn, makes it easy to skip when resolving
conflicts, and gets us to a clean baseline (again).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@304787 91177308-0d34-0410-b5e6-96231b3b80d8
2017-06-06 11:49:48 +00:00

59 lines
2.3 KiB
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//===-- StringExtras.cpp - Implement the StringExtras header --------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the StringExtras.h header
//
//===----------------------------------------------------------------------===//
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/SmallVector.h"
using namespace llvm;
/// StrInStrNoCase - Portable version of strcasestr. Locates the first
/// occurrence of string 's1' in string 's2', ignoring case. Returns
/// the offset of s2 in s1 or npos if s2 cannot be found.
StringRef::size_type llvm::StrInStrNoCase(StringRef s1, StringRef s2) {
size_t N = s2.size(), M = s1.size();
if (N > M)
return StringRef::npos;
for (size_t i = 0, e = M - N + 1; i != e; ++i)
if (s1.substr(i, N).equals_lower(s2))
return i;
return StringRef::npos;
}
/// getToken - This function extracts one token from source, ignoring any
/// leading characters that appear in the Delimiters string, and ending the
/// token at any of the characters that appear in the Delimiters string. If
/// there are no tokens in the source string, an empty string is returned.
/// The function returns a pair containing the extracted token and the
/// remaining tail string.
std::pair<StringRef, StringRef> llvm::getToken(StringRef Source,
StringRef Delimiters) {
// Figure out where the token starts.
StringRef::size_type Start = Source.find_first_not_of(Delimiters);
// Find the next occurrence of the delimiter.
StringRef::size_type End = Source.find_first_of(Delimiters, Start);
return std::make_pair(Source.slice(Start, End), Source.substr(End));
}
/// SplitString - Split up the specified string according to the specified
/// delimiters, appending the result fragments to the output list.
void llvm::SplitString(StringRef Source,
SmallVectorImpl<StringRef> &OutFragments,
StringRef Delimiters) {
std::pair<StringRef, StringRef> S = getToken(Source, Delimiters);
while (!S.first.empty()) {
OutFragments.push_back(S.first);
S = getToken(S.second, Delimiters);
}
}