mirror of
https://github.com/moses-smt/mosesdecoder.git
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105 lines
2.2 KiB
C++
105 lines
2.2 KiB
C++
#ifndef UTIL_SCOPED__
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#define UTIL_SCOPED__
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/* Other scoped objects in the style of scoped_ptr. */
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#include "util/exception.hh"
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#include <cstddef>
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namespace util {
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class MallocException : public ErrnoException {
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public:
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explicit MallocException(std::size_t requested) throw();
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~MallocException() throw();
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};
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void *MallocOrThrow(std::size_t requested);
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void *CallocOrThrow(std::size_t requested);
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class scoped_malloc {
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public:
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scoped_malloc() : p_(NULL) {}
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scoped_malloc(void *p) : p_(p) {}
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~scoped_malloc();
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void reset(void *p = NULL) {
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scoped_malloc other(p_);
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p_ = p;
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}
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void call_realloc(std::size_t to);
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void *get() { return p_; }
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const void *get() const { return p_; }
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private:
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void *p_;
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scoped_malloc(const scoped_malloc &);
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scoped_malloc &operator=(const scoped_malloc &);
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};
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// Hat tip to boost.
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template <class T> class scoped_array {
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public:
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explicit scoped_array(T *content = NULL) : c_(content) {}
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~scoped_array() { delete [] c_; }
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T *get() { return c_; }
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const T* get() const { return c_; }
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T &operator*() { return *c_; }
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const T&operator*() const { return *c_; }
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T &operator[](std::size_t idx) { return c_[idx]; }
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const T &operator[](std::size_t idx) const { return c_[idx]; }
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void reset(T *to = NULL) {
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scoped_array<T> other(c_);
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c_ = to;
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}
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private:
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T *c_;
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scoped_array(const scoped_array &);
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void operator=(const scoped_array &);
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};
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template <class T> class scoped_ptr {
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public:
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explicit scoped_ptr(T *content = NULL) : c_(content) {}
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~scoped_ptr() { delete c_; }
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T *get() { return c_; }
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const T* get() const { return c_; }
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T &operator*() { return *c_; }
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const T&operator*() const { return *c_; }
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T *operator->() { return c_; }
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const T*operator->() const { return c_; }
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T &operator[](std::size_t idx) { return c_[idx]; }
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const T &operator[](std::size_t idx) const { return c_[idx]; }
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void reset(T *to = NULL) {
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scoped_ptr<T> other(c_);
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c_ = to;
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}
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private:
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T *c_;
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scoped_ptr(const scoped_ptr &);
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void operator=(const scoped_ptr &);
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};
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} // namespace util
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#endif // UTIL_SCOPED__
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