averello/swift-mirror
1
0
Fork 0
mirror of https://github.com/apple/swift.git synced 2025-12-14 20:36:38 +01:00
Code Issues Packages Projects Releases Wiki Activity

Add utilities for lower- and sentence-casing camelCase strings.

Browse Source 
Swift SVN r15815
This commit is contained in:
Doug Gregor
2014-04-02 18:29:50 +00:00
parent 23bd9a1933
commit 925097a8b0
3 changed files with 72 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

37
lib/Basic/StringExtras.cpp
View File

@@ -16,6 +16,7 @@
//===----------------------------------------------------------------------===//
#include "swift/Basic/StringExtras.h"
#include "clang/Basic/CharInfo.h"
#include "llvm/ADT/SmallVector.h"
using namespace swift;
using namespace camel_case;
@@ -86,7 +87,6 @@ void WordIterator::computePrevPosition() const {
PrevPositionValid = true;
}
StringRef camel_case::getFirstWord(StringRef string) {
if (string.empty())
return "";
@@ -101,3 +101,38 @@ StringRef camel_case::getLastWord(StringRef string) {
return *--WordIterator(string, string.size());
}
StringRef camel_case::toLowercaseWord(StringRef string,
SmallVectorImpl<char> &scratch) {
if (string.empty())
return string;
// Already lowercase.
if (!clang::isUppercase(string[0]))
return string;
// Acronym doesn't get lowercased.
if (string.size() > 1 && clang::isUppercase(string[1]))
return string;
// Lowercase the first letter, append the rest.
scratch.clear();
scratch.push_back(clang::toLowercase(string[0]));
scratch.append(string.begin() + 1, string.end());
return StringRef(scratch.data(), scratch.size());
}
StringRef camel_case::toSentencecase(StringRef string,
SmallVectorImpl<char> &scratch) {
if (string.empty())
return string;
// Can't be uppercased.
if (!clang::isLowercase(string[0]))
return string;
// Uppercase the first letter, append the rest.
scratch.clear();
scratch.push_back(clang::toUppercase(string[0]));
scratch.append(string.begin() + 1, string.end());
return StringRef(scratch.data(), scratch.size());
}