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Additional methods for SmallString.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148881 91177308-0d34-0410-b5e6-96231b3b80d8
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Talin
parent
d36f5af224
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@ -24,21 +24,244 @@ namespace llvm {
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template<unsigned InternalLen>
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class SmallString : public SmallVector<char, InternalLen> {
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public:
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// Default ctor - Initialize to empty.
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/// Default ctor - Initialize to empty.
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SmallString() {}
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// Initialize from a StringRef.
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/// Initialize from a StringRef.
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SmallString(StringRef S) : SmallVector<char, InternalLen>(S.begin(), S.end()) {}
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// Initialize with a range.
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/// Initialize with a range.
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template<typename ItTy>
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SmallString(ItTy S, ItTy E) : SmallVector<char, InternalLen>(S, E) {}
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// Copy ctor.
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/// Copy ctor.
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SmallString(const SmallString &RHS) : SmallVector<char, InternalLen>(RHS) {}
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// Note that in order to add new overloads for append & assign, we have to
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// duplicate the inherited versions so as not to inadvertently hide them.
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/// @}
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/// @name String Assignment
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/// @{
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/// Assign from a repeated element
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void assign(unsigned NumElts, char Elt) {
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this->SmallVectorImpl<char>::assign(NumElts, Elt);
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}
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/// Assign from an iterator pair
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template<typename in_iter>
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void assign(in_iter S, in_iter E) {
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this->clear();
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SmallVectorImpl<char>::append(S, E);
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}
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/// Assign from a StringRef
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void assign(StringRef RHS) {
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this->clear();
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SmallVectorImpl<char>::append(RHS.begin(), RHS.end());
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}
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/// Assign from a SmallVector
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void assign(const SmallVectorImpl<char> &RHS) {
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this->clear();
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SmallVectorImpl<char>::append(RHS.begin(), RHS.end());
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}
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/// @}
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/// @name String Concatenation
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/// @{
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/// Append from an iterator pair
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template<typename in_iter>
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void append(in_iter S, in_iter E) {
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SmallVectorImpl<char>::append(S, E);
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}
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/// Append from a StringRef
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void append(StringRef RHS) {
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SmallVectorImpl<char>::append(RHS.begin(), RHS.end());
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}
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/// Append from a SmallVector
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void append(const SmallVectorImpl<char> &RHS) {
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SmallVectorImpl<char>::append(RHS.begin(), RHS.end());
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}
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/// @}
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/// @name String Comparison
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/// @{
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/// equals - Check for string equality, this is more efficient than
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/// compare() when the relative ordering of inequal strings isn't needed.
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bool equals(StringRef RHS) const {
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return str().equals(RHS);
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}
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/// equals_lower - Check for string equality, ignoring case.
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bool equals_lower(StringRef RHS) const {
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return str().equals_lower(RHS);
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}
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/// compare - Compare two strings; the result is -1, 0, or 1 if this string
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/// is lexicographically less than, equal to, or greater than the \arg RHS.
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int compare(StringRef RHS) const {
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return str().compare(RHS);
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}
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/// compare_lower - Compare two strings, ignoring case.
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int compare_lower(StringRef RHS) const {
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return str().compare_lower(RHS);
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}
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/// compare_numeric - Compare two strings, treating sequences of digits as
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/// numbers.
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int compare_numeric(StringRef RHS) const {
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return str().compare_numeric(RHS);
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}
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/// @}
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/// @name String Predicates
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/// @{
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/// startswith - Check if this string starts with the given \arg Prefix.
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bool startswith(StringRef Prefix) const {
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return str().startswith(Prefix);
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}
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/// endswith - Check if this string ends with the given \arg Suffix.
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bool endswith(StringRef Suffix) const {
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return str().endswith(Suffix);
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}
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/// @}
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/// @name String Searching
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/// @{
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/// find - Search for the first character \arg C in the string.
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///
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/// \return - The index of the first occurrence of \arg C, or npos if not
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/// found.
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size_t find(char C, size_t From = 0) const {
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return str().find(C, From);
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}
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/// find - Search for the first string \arg Str in the string.
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///
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/// \return - The index of the first occurrence of \arg Str, or npos if not
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/// found.
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size_t find(StringRef Str, size_t From = 0) const {
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return str().find(Str, From);
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}
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/// rfind - Search for the last character \arg C in the string.
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///
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/// \return - The index of the last occurrence of \arg C, or npos if not
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/// found.
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size_t rfind(char C, size_t From = StringRef::npos) const {
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return str().rfind(C, From);
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}
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/// rfind - Search for the last string \arg Str in the string.
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///
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/// \return - The index of the last occurrence of \arg Str, or npos if not
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/// found.
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size_t rfind(StringRef Str) const {
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return str().rfind(Str);
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}
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/// find_first_of - Find the first character in the string that is \arg C,
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/// or npos if not found. Same as find.
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size_t find_first_of(char C, size_t From = 0) const {
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return str().find_first_of(C, From);
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}
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/// find_first_of - Find the first character in the string that is in \arg
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/// Chars, or npos if not found.
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///
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/// Note: O(size() + Chars.size())
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size_t find_first_of(StringRef Chars, size_t From = 0) const {
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return str().find_first_of(Chars, From);
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}
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/// find_first_not_of - Find the first character in the string that is not
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/// \arg C or npos if not found.
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size_t find_first_not_of(char C, size_t From = 0) const {
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return str().find_first_not_of(C, From);
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}
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/// find_first_not_of - Find the first character in the string that is not
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/// in the string \arg Chars, or npos if not found.
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///
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/// Note: O(size() + Chars.size())
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size_t find_first_not_of(StringRef Chars, size_t From = 0) const {
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return str().find_first_not_of(Chars, From);
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}
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/// find_last_of - Find the last character in the string that is \arg C, or
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/// npos if not found.
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size_t find_last_of(char C, size_t From = StringRef::npos) const {
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return str().find_last_of(C, From);
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}
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/// find_last_of - Find the last character in the string that is in \arg C,
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/// or npos if not found.
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///
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/// Note: O(size() + Chars.size())
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size_t find_last_of(
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StringRef Chars, size_t From = StringRef::npos) const {
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return str().find_last_of(Chars, From);
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}
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/// @}
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/// @name Helpful Algorithms
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/// @{
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/// count - Return the number of occurrences of \arg C in the string.
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size_t count(char C) const {
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return str().count(C);
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}
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/// count - Return the number of non-overlapped occurrences of \arg Str in
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/// the string.
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size_t count(StringRef Str) const {
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return str().count(Str);
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}
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/// @}
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/// @name Substring Operations
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/// @{
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/// substr - Return a reference to the substring from [Start, Start + N).
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///
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/// \param Start - The index of the starting character in the substring; if
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/// the index is npos or greater than the length of the string then the
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/// empty substring will be returned.
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///
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/// \param N - The number of characters to included in the substring. If N
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/// exceeds the number of characters remaining in the string, the string
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/// suffix (starting with \arg Start) will be returned.
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StringRef substr(size_t Start, size_t N = StringRef::npos) const {
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return str().substr(Start, N);
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}
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/// slice - Return a reference to the substring from [Start, End).
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///
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/// \param Start - The index of the starting character in the substring; if
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/// the index is npos or greater than the length of the string then the
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/// empty substring will be returned.
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///
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/// \param End - The index following the last character to include in the
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/// substring. If this is npos, or less than \arg Start, or exceeds the
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/// number of characters remaining in the string, the string suffix
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/// (starting with \arg Start) will be returned.
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StringRef slice(size_t Start, size_t End) const {
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return str().slice(Start, End);
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}
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// Extra methods.
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/// Explicit conversion to StringRef
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StringRef str() const { return StringRef(this->begin(), this->size()); }
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// TODO: Make this const, if it's safe...
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@ -48,7 +271,7 @@ public:
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return this->data();
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}
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// Implicit conversion to StringRef.
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/// Implicit conversion to StringRef.
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operator StringRef() const { return str(); }
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// Extra operators.
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@ -44,5 +44,153 @@ TEST_F(SmallStringTest, EmptyStringTest) {
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EXPECT_TRUE(theString.rbegin() == theString.rend());
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}
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TEST_F(SmallStringTest, AssignRepeated) {
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theString.assign(3, 'a');
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EXPECT_EQ(3u, theString.size());
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EXPECT_STREQ("aaa", theString.c_str());
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}
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TEST_F(SmallStringTest, AssignIterPair) {
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StringRef abc = "abc";
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theString.assign(abc.begin(), abc.end());
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EXPECT_EQ(3u, theString.size());
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EXPECT_STREQ("abc", theString.c_str());
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}
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TEST_F(SmallStringTest, AssignStringRef) {
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StringRef abc = "abc";
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theString.assign(abc);
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EXPECT_EQ(3u, theString.size());
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EXPECT_STREQ("abc", theString.c_str());
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}
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TEST_F(SmallStringTest, AssignSmallVector) {
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StringRef abc = "abc";
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SmallVector<char, 10> abcVec(abc.begin(), abc.end());
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theString.assign(abcVec);
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EXPECT_EQ(3u, theString.size());
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EXPECT_STREQ("abc", theString.c_str());
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}
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TEST_F(SmallStringTest, AppendIterPair) {
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StringRef abc = "abc";
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theString.append(abc.begin(), abc.end());
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theString.append(abc.begin(), abc.end());
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EXPECT_EQ(6u, theString.size());
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EXPECT_STREQ("abcabc", theString.c_str());
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}
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TEST_F(SmallStringTest, AppendStringRef) {
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StringRef abc = "abc";
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theString.append(abc);
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theString.append(abc);
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EXPECT_EQ(6u, theString.size());
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EXPECT_STREQ("abcabc", theString.c_str());
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}
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TEST_F(SmallStringTest, AppendSmallVector) {
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StringRef abc = "abc";
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SmallVector<char, 10> abcVec(abc.begin(), abc.end());
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theString.append(abcVec);
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theString.append(abcVec);
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EXPECT_EQ(6u, theString.size());
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EXPECT_STREQ("abcabc", theString.c_str());
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}
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TEST_F(SmallStringTest, Substr) {
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theString = "hello";
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EXPECT_EQ("lo", theString.substr(3));
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EXPECT_EQ("", theString.substr(100));
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EXPECT_EQ("hello", theString.substr(0, 100));
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EXPECT_EQ("o", theString.substr(4, 10));
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}
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TEST_F(SmallStringTest, Slice) {
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theString = "hello";
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EXPECT_EQ("l", theString.slice(2, 3));
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EXPECT_EQ("ell", theString.slice(1, 4));
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EXPECT_EQ("llo", theString.slice(2, 100));
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EXPECT_EQ("", theString.slice(2, 1));
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EXPECT_EQ("", theString.slice(10, 20));
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}
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TEST_F(SmallStringTest, Find) {
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theString = "hello";
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EXPECT_EQ(2U, theString.find('l'));
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EXPECT_EQ(StringRef::npos, theString.find('z'));
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EXPECT_EQ(StringRef::npos, theString.find("helloworld"));
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EXPECT_EQ(0U, theString.find("hello"));
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EXPECT_EQ(1U, theString.find("ello"));
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EXPECT_EQ(StringRef::npos, theString.find("zz"));
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EXPECT_EQ(2U, theString.find("ll", 2));
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EXPECT_EQ(StringRef::npos, theString.find("ll", 3));
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EXPECT_EQ(0U, theString.find(""));
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EXPECT_EQ(3U, theString.rfind('l'));
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EXPECT_EQ(StringRef::npos, theString.rfind('z'));
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EXPECT_EQ(StringRef::npos, theString.rfind("helloworld"));
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EXPECT_EQ(0U, theString.rfind("hello"));
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EXPECT_EQ(1U, theString.rfind("ello"));
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EXPECT_EQ(StringRef::npos, theString.rfind("zz"));
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EXPECT_EQ(2U, theString.find_first_of('l'));
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EXPECT_EQ(1U, theString.find_first_of("el"));
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EXPECT_EQ(StringRef::npos, theString.find_first_of("xyz"));
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EXPECT_EQ(1U, theString.find_first_not_of('h'));
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EXPECT_EQ(4U, theString.find_first_not_of("hel"));
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EXPECT_EQ(StringRef::npos, theString.find_first_not_of("hello"));
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theString = "hellx xello hell ello world foo bar hello";
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EXPECT_EQ(36U, theString.find("hello"));
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EXPECT_EQ(28U, theString.find("foo"));
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EXPECT_EQ(12U, theString.find("hell", 2));
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EXPECT_EQ(0U, theString.find(""));
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}
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TEST_F(SmallStringTest, Count) {
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theString = "hello";
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EXPECT_EQ(2U, theString.count('l'));
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EXPECT_EQ(1U, theString.count('o'));
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EXPECT_EQ(0U, theString.count('z'));
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EXPECT_EQ(0U, theString.count("helloworld"));
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EXPECT_EQ(1U, theString.count("hello"));
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EXPECT_EQ(1U, theString.count("ello"));
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EXPECT_EQ(0U, theString.count("zz"));
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}
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TEST(StringRefTest, Comparisons) {
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EXPECT_EQ(-1, SmallString<10>("aab").compare("aad"));
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EXPECT_EQ( 0, SmallString<10>("aab").compare("aab"));
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EXPECT_EQ( 1, SmallString<10>("aab").compare("aaa"));
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EXPECT_EQ(-1, SmallString<10>("aab").compare("aabb"));
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EXPECT_EQ( 1, SmallString<10>("aab").compare("aa"));
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EXPECT_EQ( 1, SmallString<10>("\xFF").compare("\1"));
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EXPECT_EQ(-1, SmallString<10>("AaB").compare_lower("aAd"));
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EXPECT_EQ( 0, SmallString<10>("AaB").compare_lower("aab"));
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EXPECT_EQ( 1, SmallString<10>("AaB").compare_lower("AAA"));
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EXPECT_EQ(-1, SmallString<10>("AaB").compare_lower("aaBb"));
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EXPECT_EQ( 1, SmallString<10>("AaB").compare_lower("aA"));
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EXPECT_EQ( 1, SmallString<10>("\xFF").compare_lower("\1"));
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EXPECT_EQ(-1, SmallString<10>("aab").compare_numeric("aad"));
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EXPECT_EQ( 0, SmallString<10>("aab").compare_numeric("aab"));
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EXPECT_EQ( 1, SmallString<10>("aab").compare_numeric("aaa"));
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EXPECT_EQ(-1, SmallString<10>("aab").compare_numeric("aabb"));
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EXPECT_EQ( 1, SmallString<10>("aab").compare_numeric("aa"));
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EXPECT_EQ(-1, SmallString<10>("1").compare_numeric("10"));
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EXPECT_EQ( 0, SmallString<10>("10").compare_numeric("10"));
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EXPECT_EQ( 0, SmallString<10>("10a").compare_numeric("10a"));
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EXPECT_EQ( 1, SmallString<10>("2").compare_numeric("1"));
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EXPECT_EQ( 0, SmallString<10>("llvm_v1i64_ty").compare_numeric("llvm_v1i64_ty"));
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EXPECT_EQ( 1, SmallString<10>("\xFF").compare_numeric("\1"));
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EXPECT_EQ( 1, SmallString<10>("V16").compare_numeric("V1_q0"));
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EXPECT_EQ(-1, SmallString<10>("V1_q0").compare_numeric("V16"));
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EXPECT_EQ(-1, SmallString<10>("V8_q0").compare_numeric("V16"));
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EXPECT_EQ( 1, SmallString<10>("V16").compare_numeric("V8_q0"));
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EXPECT_EQ(-1, SmallString<10>("V1_q0").compare_numeric("V8_q0"));
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EXPECT_EQ( 1, SmallString<10>("V8_q0").compare_numeric("V1_q0"));
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}
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}
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