Add SmallString a (currently) minimal class that adapts SmallVector to be
more string-like. llvm-svn: 31289
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//===- llvm/ADT/SmallString.h - 'Normally small' strings --------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by Chris Lattner and is distributed under
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// the University of Illinois Open Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines the SmallString class.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_ADT_SMALLSTRING_H
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#define LLVM_ADT_SMALLSTRING_H
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#include "llvm/ADT/SmallVector.h"
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#include <cstring>
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namespace llvm {
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/// SmallString - A SmallString is just a SmallVector with methods and accessors
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/// that make it work better as a string (e.g. operator+ etc).
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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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SmallString() {}
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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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SmallString(const SmallString &RHS) : SmallVector<char, InternalLen>(RHS) {}
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// Extra methods.
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const char *c_str() const {
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SmallString *This = const_cast<SmallString*>(this);
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// Ensure that there is a \0 at the end of the string.
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This->reserve(this->size()+1);
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This->End[0] = 0;
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return this->begin();
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}
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// Extra operators.
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SmallString &operator+=(const char *RHS) {
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this->append(RHS, RHS+strlen(RHS));
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return *this;
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}
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};
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}
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#endif
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@ -25,6 +25,7 @@ namespace llvm {
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/// template parameter.
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template <typename T>
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class SmallVectorImpl {
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protected:
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T *Begin, *End, *Capacity;
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// Allocate raw space for N elements of type T. If T has a ctor or dtor, we
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