mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-23 17:29:19 +00:00
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176113 91177308-0d34-0410-b5e6-96231b3b80d8
301 lines
8.5 KiB
C++
301 lines
8.5 KiB
C++
//===- llvm/ADT/SmallString.h - 'Normally small' strings --------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file defines the SmallString class.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_ADT_SMALLSTRING_H
|
|
#define LLVM_ADT_SMALLSTRING_H
|
|
|
|
#include "llvm/ADT/SmallVector.h"
|
|
#include "llvm/ADT/StringRef.h"
|
|
|
|
namespace llvm {
|
|
|
|
/// SmallString - A SmallString is just a SmallVector with methods and accessors
|
|
/// that make it work better as a string (e.g. operator+ etc).
|
|
template<unsigned InternalLen>
|
|
class SmallString : public SmallVector<char, InternalLen> {
|
|
public:
|
|
/// Default ctor - Initialize to empty.
|
|
SmallString() {}
|
|
|
|
/// Initialize from a StringRef.
|
|
SmallString(StringRef S) : SmallVector<char, InternalLen>(S.begin(), S.end()) {}
|
|
|
|
/// Initialize with a range.
|
|
template<typename ItTy>
|
|
SmallString(ItTy S, ItTy E) : SmallVector<char, InternalLen>(S, E) {}
|
|
|
|
/// Copy ctor.
|
|
SmallString(const SmallString &RHS) : SmallVector<char, InternalLen>(RHS) {}
|
|
|
|
// Note that in order to add new overloads for append & assign, we have to
|
|
// duplicate the inherited versions so as not to inadvertently hide them.
|
|
|
|
/// @}
|
|
/// @name String Assignment
|
|
/// @{
|
|
|
|
/// Assign from a repeated element.
|
|
void assign(size_t NumElts, char Elt) {
|
|
this->SmallVectorImpl<char>::assign(NumElts, Elt);
|
|
}
|
|
|
|
/// Assign from an iterator pair.
|
|
template<typename in_iter>
|
|
void assign(in_iter S, in_iter E) {
|
|
this->clear();
|
|
SmallVectorImpl<char>::append(S, E);
|
|
}
|
|
|
|
/// Assign from a StringRef.
|
|
void assign(StringRef RHS) {
|
|
this->clear();
|
|
SmallVectorImpl<char>::append(RHS.begin(), RHS.end());
|
|
}
|
|
|
|
/// Assign from a SmallVector.
|
|
void assign(const SmallVectorImpl<char> &RHS) {
|
|
this->clear();
|
|
SmallVectorImpl<char>::append(RHS.begin(), RHS.end());
|
|
}
|
|
|
|
/// @}
|
|
/// @name String Concatenation
|
|
/// @{
|
|
|
|
/// Append from an iterator pair.
|
|
template<typename in_iter>
|
|
void append(in_iter S, in_iter E) {
|
|
SmallVectorImpl<char>::append(S, E);
|
|
}
|
|
|
|
void append(size_t NumInputs, char Elt) {
|
|
SmallVectorImpl<char>::append(NumInputs, Elt);
|
|
}
|
|
|
|
|
|
/// Append from a StringRef.
|
|
void append(StringRef RHS) {
|
|
SmallVectorImpl<char>::append(RHS.begin(), RHS.end());
|
|
}
|
|
|
|
/// Append from a SmallVector.
|
|
void append(const SmallVectorImpl<char> &RHS) {
|
|
SmallVectorImpl<char>::append(RHS.begin(), RHS.end());
|
|
}
|
|
|
|
/// @}
|
|
/// @name String Comparison
|
|
/// @{
|
|
|
|
/// Check for string equality. This is more efficient than compare() when
|
|
/// the relative ordering of inequal strings isn't needed.
|
|
bool equals(StringRef RHS) const {
|
|
return str().equals(RHS);
|
|
}
|
|
|
|
/// Check for string equality, ignoring case.
|
|
bool equals_lower(StringRef RHS) const {
|
|
return str().equals_lower(RHS);
|
|
}
|
|
|
|
/// Compare two strings; the result is -1, 0, or 1 if this string is
|
|
/// lexicographically less than, equal to, or greater than the \p RHS.
|
|
int compare(StringRef RHS) const {
|
|
return str().compare(RHS);
|
|
}
|
|
|
|
/// compare_lower - Compare two strings, ignoring case.
|
|
int compare_lower(StringRef RHS) const {
|
|
return str().compare_lower(RHS);
|
|
}
|
|
|
|
/// compare_numeric - Compare two strings, treating sequences of digits as
|
|
/// numbers.
|
|
int compare_numeric(StringRef RHS) const {
|
|
return str().compare_numeric(RHS);
|
|
}
|
|
|
|
/// @}
|
|
/// @name String Predicates
|
|
/// @{
|
|
|
|
/// startswith - Check if this string starts with the given \p Prefix.
|
|
bool startswith(StringRef Prefix) const {
|
|
return str().startswith(Prefix);
|
|
}
|
|
|
|
/// endswith - Check if this string ends with the given \p Suffix.
|
|
bool endswith(StringRef Suffix) const {
|
|
return str().endswith(Suffix);
|
|
}
|
|
|
|
/// @}
|
|
/// @name String Searching
|
|
/// @{
|
|
|
|
/// find - Search for the first character \p C in the string.
|
|
///
|
|
/// \return - The index of the first occurrence of \p C, or npos if not
|
|
/// found.
|
|
size_t find(char C, size_t From = 0) const {
|
|
return str().find(C, From);
|
|
}
|
|
|
|
/// Search for the first string \p Str in the string.
|
|
///
|
|
/// \returns The index of the first occurrence of \p Str, or npos if not
|
|
/// found.
|
|
size_t find(StringRef Str, size_t From = 0) const {
|
|
return str().find(Str, From);
|
|
}
|
|
|
|
/// Search for the last character \p C in the string.
|
|
///
|
|
/// \returns The index of the last occurrence of \p C, or npos if not
|
|
/// found.
|
|
size_t rfind(char C, size_t From = StringRef::npos) const {
|
|
return str().rfind(C, From);
|
|
}
|
|
|
|
/// Search for the last string \p Str in the string.
|
|
///
|
|
/// \returns The index of the last occurrence of \p Str, or npos if not
|
|
/// found.
|
|
size_t rfind(StringRef Str) const {
|
|
return str().rfind(Str);
|
|
}
|
|
|
|
/// Find the first character in the string that is \p C, or npos if not
|
|
/// found. Same as find.
|
|
size_t find_first_of(char C, size_t From = 0) const {
|
|
return str().find_first_of(C, From);
|
|
}
|
|
|
|
/// Find the first character in the string that is in \p Chars, or npos if
|
|
/// not found.
|
|
///
|
|
/// Complexity: O(size() + Chars.size())
|
|
size_t find_first_of(StringRef Chars, size_t From = 0) const {
|
|
return str().find_first_of(Chars, From);
|
|
}
|
|
|
|
/// Find the first character in the string that is not \p C or npos if not
|
|
/// found.
|
|
size_t find_first_not_of(char C, size_t From = 0) const {
|
|
return str().find_first_not_of(C, From);
|
|
}
|
|
|
|
/// Find the first character in the string that is not in the string
|
|
/// \p Chars, or npos if not found.
|
|
///
|
|
/// Complexity: O(size() + Chars.size())
|
|
size_t find_first_not_of(StringRef Chars, size_t From = 0) const {
|
|
return str().find_first_not_of(Chars, From);
|
|
}
|
|
|
|
/// Find the last character in the string that is \p C, or npos if not
|
|
/// found.
|
|
size_t find_last_of(char C, size_t From = StringRef::npos) const {
|
|
return str().find_last_of(C, From);
|
|
}
|
|
|
|
/// Find the last character in the string that is in \p C, or npos if not
|
|
/// found.
|
|
///
|
|
/// Complexity: O(size() + Chars.size())
|
|
size_t find_last_of(
|
|
StringRef Chars, size_t From = StringRef::npos) const {
|
|
return str().find_last_of(Chars, From);
|
|
}
|
|
|
|
/// @}
|
|
/// @name Helpful Algorithms
|
|
/// @{
|
|
|
|
/// Return the number of occurrences of \p C in the string.
|
|
size_t count(char C) const {
|
|
return str().count(C);
|
|
}
|
|
|
|
/// Return the number of non-overlapped occurrences of \p Str in the
|
|
/// string.
|
|
size_t count(StringRef Str) const {
|
|
return str().count(Str);
|
|
}
|
|
|
|
/// @}
|
|
/// @name Substring Operations
|
|
/// @{
|
|
|
|
/// Return a reference to the substring from [Start, Start + N).
|
|
///
|
|
/// \param Start The index of the starting character in the substring; if
|
|
/// the index is npos or greater than the length of the string then the
|
|
/// empty substring will be returned.
|
|
///
|
|
/// \param N The number of characters to included in the substring. If \p N
|
|
/// exceeds the number of characters remaining in the string, the string
|
|
/// suffix (starting with \p Start) will be returned.
|
|
StringRef substr(size_t Start, size_t N = StringRef::npos) const {
|
|
return str().substr(Start, N);
|
|
}
|
|
|
|
/// Return a reference to the substring from [Start, End).
|
|
///
|
|
/// \param Start The index of the starting character in the substring; if
|
|
/// the index is npos or greater than the length of the string then the
|
|
/// empty substring will be returned.
|
|
///
|
|
/// \param End The index following the last character to include in the
|
|
/// substring. If this is npos, or less than \p Start, or exceeds the
|
|
/// number of characters remaining in the string, the string suffix
|
|
/// (starting with \p Start) will be returned.
|
|
StringRef slice(size_t Start, size_t End) const {
|
|
return str().slice(Start, End);
|
|
}
|
|
|
|
// Extra methods.
|
|
|
|
/// Explicit conversion to StringRef.
|
|
StringRef str() const { return StringRef(this->begin(), this->size()); }
|
|
|
|
// TODO: Make this const, if it's safe...
|
|
const char* c_str() {
|
|
this->push_back(0);
|
|
this->pop_back();
|
|
return this->data();
|
|
}
|
|
|
|
/// Implicit conversion to StringRef.
|
|
operator StringRef() const { return str(); }
|
|
|
|
// Extra operators.
|
|
const SmallString &operator=(StringRef RHS) {
|
|
this->clear();
|
|
return *this += RHS;
|
|
}
|
|
|
|
SmallString &operator+=(StringRef RHS) {
|
|
this->append(RHS.begin(), RHS.end());
|
|
return *this;
|
|
}
|
|
SmallString &operator+=(char C) {
|
|
this->push_back(C);
|
|
return *this;
|
|
}
|
|
};
|
|
|
|
}
|
|
|
|
#endif
|