Add max_size() to deque and vector

This improves STL compatibility.
electronicarts · May 22, 2024 · d9a291a · d9a291a
1 parent 05f4b4a
commit d9a291a
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Showing 4 changed files with 26 additions and 1 deletion.
diff --git a/include/EASTL/deque.h b/include/EASTL/deque.h
@@ -423,6 +423,7 @@ namespace eastl
 
 		bool      empty() const EA_NOEXCEPT; 
 		size_type size() const EA_NOEXCEPT;
+		size_type max_size() const EA_NOEXCEPT;
 
 		void resize(size_type n, const value_type& value);
 		void resize(size_type n);
@@ -1476,6 +1477,14 @@ namespace eastl
 	}
 
 
+	template <typename T, typename Allocator, unsigned kDequeSubarraySize>
+	typename deque<T, Allocator, kDequeSubarraySize>::size_type
+	inline deque<T, Allocator, kDequeSubarraySize>::max_size() const EA_NOEXCEPT
+	{
+		return base_type::kMaxSize;
+	}
+
+
 	template <typename T, typename Allocator, unsigned kDequeSubarraySize>
 	inline void deque<T, Allocator, kDequeSubarraySize>::resize(size_type n, const value_type& value)
 	{

diff --git a/include/EASTL/vector.h b/include/EASTL/vector.h
@@ -261,6 +261,7 @@ namespace eastl
 		bool      empty() const EA_NOEXCEPT;
 		size_type size() const EA_NOEXCEPT;
 		size_type capacity() const EA_NOEXCEPT;
+		size_type max_size() const EA_NOEXCEPT;
 
 		void resize(size_type n, const value_type& value);
 		void resize(size_type n);
@@ -813,6 +814,14 @@ namespace eastl
 	}
 
 
+	template <typename T, typename Allocator>
+	inline typename vector<T, Allocator>::size_type
+	vector<T, Allocator>::max_size() const EA_NOEXCEPT
+	{
+		return base_type::kMaxSize;
+	}
+
+
 	template <typename T, typename Allocator>
 	inline void vector<T, Allocator>::resize(size_type n, const value_type& value)
 	{

diff --git a/test/source/TestDeque.cpp b/test/source/TestDeque.cpp
@@ -112,6 +112,9 @@ int TestDequeConstruction()
 		dB.clear();
 		EATEST_VERIFY(dB.size() == 0);
 		EATEST_VERIFY(dB.empty());
+
+		// max_size
+		EATEST_VERIFY(dB.max_size() == std::numeric_limits<eastl_size_t>::max() - 1u);
 	}
 
 	EATEST_VERIFY(TestObject::sTOCount == 0);

diff --git a/test/source/TestVector.cpp b/test/source/TestVector.cpp
@@ -1077,8 +1077,12 @@ int TestVector()
 	{
 		using namespace eastl;
 
-		// reserve / resize / capacity / clear
 		vector<int> v(10, 17);
+
+		// max_size
+		EATEST_VERIFY(v.max_size() == std::numeric_limits<eastl_size_t>::max() - 1u);
+
+		// reserve / resize / capacity / clear
 		v.reserve(20);
 		EATEST_VERIFY(v.validate());
 		EATEST_VERIFY(v.size() == 10);