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mch::var gets operators -> and * #33

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mch::var gets operators -> and * #33

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14 changes: 13 additions & 1 deletion code/mach7/patterns/primitive.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -251,6 +251,12 @@ struct var : transparent_wrapper<T>
/// Helper conversion operator to let the variable be used in some places
/// where T was allowed
operator const result_type&() const noexcept { return base::value(); }

/// Helper operator to access the subobjects of the variable
const result_type* operator->() const noexcept { return &base::value(); }

/// Helper operator to access the subobjects of the variable
const result_type& operator*() const noexcept { return base::value(); }
};

//------------------------------------------------------------------------------
Expand Down Expand Up @@ -380,7 +386,13 @@ struct var<T&>
/// \note If you get assertion here, it means you are trying to use the
/// value of this reference variable before it was bound (i.e. used
/// in pattern matching context to get its value).
operator const result_type&() const noexcept { XTL_ASSERT(m_value); return *m_value; }
operator T&() const noexcept { XTL_ASSERT(m_value); return *m_value; }

/// Helper operator to access the subobjects of the variable
T* operator->() const noexcept { XTL_ASSERT(m_value); return m_value; }

/// Helper operator to access the subobjects of the variable
T& operator*() const noexcept { XTL_ASSERT(m_value); return *m_value; }

/// Member that will hold matching value in case of successful matching
mutable T* m_value;
Expand Down