While working with some templates and writing myself a basic container class with iterators, I found myself needing to move the body of member functions from a template class into a separate file to conform to style guidelines. However, I've run into an interesting compile error:
runtimearray.cpp:17: error: expected constructor, destructor, or type conversion before '&' token runtimearray.cpp:24: error: expected constructor, destructor, or type conversion before '&' token runtimearray.cpp:32: error: expected constructor, destructor, or type conversion before '&' token runtimearray.cpp:39: error: expected constructor, destructor, or type conversion before '&' token runtimearray.cpp:85: error: expected constructor, destructor, or type conversion before 'RuntimeArray' runtimearray.cpp:91: error: expected constructor, destructor, or type conversion before 'RuntimeArray'
runtimearray.h:
#ifndef RUNTIMEARRAY_H_
#define RUNTIMEARRAY_H_
template<typename T>
class RuntimeArray
{
public:
class Iterator
{
friend class RuntimeArray;
public:
Iterator(const Iterator& other);
T& operator*();
Iterator& operator++();
Iterator& operator++(int);
Iterator& operator--();
Iterator& operator--(int);
bool operator==(Iterator other);
bool operator!=(Iterator other);
private:
Iterator(T* location);
T* value_;
};
RuntimeArray(int size);
~RuntimeArray();
T& operator[](int index);
Iterator Begin();
Iterator End();
private:
int size_;
T* contents_;
};
#endif // RUNTIMEARRAY_H_
runtimearray.cpp:
#include "runtimearray.h"
template<typename T>
RuntimeArray<T>::Iterator::Iterator(const Iterator& other)
: value_(other.value_)
{
}
template<typename T>
T& RuntimeArray<T>::Iterator::operator*()
{
return *value_;
}
template<typename T>
RuntimeArray<T>::Iterator& RuntimeArray<T>::Iterator::operator++()
{
++value_;
return *this;
}
template<typename T>
RuntimeArray<T>::Iterator& RuntimeArray<T>::Iterator::operator++(int)
{
Iterator old = *this;
++value_;
return old;
}
template<typename T>
RuntimeArray<T>::Iterator& RuntimeArray<T>::Iterator::operator--()
{
--value_;
return *this;
}
template<typename T>
RuntimeArray<T>::Iterator& RuntimeArray<T>::Iterator::operator--(int)
{
Iterator old = *this;
--value_;
return old;
}
template<typename T>
bool RuntimeArray<T>::Iterator::operator==(Iterator other)
{
return value_ == other.value_;
}
template<typename T>
bool RuntimeArray<T>::Iterator::operator!=(Iterator other)
{
return value_ != other.value_;
}
template<typename T>
RuntimeArray<T>::Iterator::Iterator(T* location)
: value_(location)
{
}
template<typename T>
RuntimeArray<T>::RuntimeArray(int size)
: size_(size),
contents_(new T[size])
{
}
template<typename T>
RuntimeArray<T>::~RuntimeArray()
{
if(contents_)
delete[] contents_;
}
template<typename T>
T& RuntimeArray<T>::operator[](int index)
{
return contents_[index];
}
template<typename T>
RuntimeArray<T>::Iterator RuntimeArray<T>::Begin()
{
return Iterator(contents_);
}
template<typename T>
RuntimeArray<T>::Iterator RuntimeArray<T>::End()
{
return Iterator(contents_ + size_);
}
How can I make these errors go away? The files make sense to me, but alas, it's the compiler's say that matters.