BAN: Implement more basic functionality

String has more features
StringView was implemented
Basic move semantics are now working
Added file for forward declarations

BAN/BAN/StringView.cpp

@@ -0,0 +1,93 @@
+#include <BAN/String.h>
+#include <BAN/StringView.h>
+#include <BAN/Vector.h>
+
+#include <assert.h>
+#include <string.h>
+
+namespace BAN
+{
+
+	StringView::StringView()
+	{ }
+
+	StringView::StringView(const String& other)
+		: StringView(other.Data(), other.Size())
+	{ }
+
+	StringView::StringView(const char* string, size_type len)
+	{
+		if (len == size_type(-1))
+			len = strlen(string);
+		m_data = string;
+		m_size = len;
+	}
+
+	char StringView::operator[](size_type index) const
+	{
+		assert(index < m_size);
+		return m_data[index];
+	}
+
+	bool StringView::operator==(const StringView& other) const
+	{
+		if (m_size != other.m_size)
+			return false;
+		return memcmp(m_data, other.m_data, m_size) == 0;
+	}
+
+	StringView StringView::Substring(size_type index, size_type len) const
+	{
+		assert(index <= m_size);
+		if (len == size_type(-1))
+			len = m_size - index;
+		assert(len <= m_size - index); // weird order to avoid overflow
+		StringView result;
+		result.m_data = m_data + index;
+		result.m_size = len;
+		return result;
+	}
+
+	Vector<StringView> StringView::Split(char delim, bool allow_empties)
+	{
+		Vector<StringView> result;
+		size_type start = 0;
+		for (size_type i = 0; i < m_size; i++)
+		{
+			if (m_data[i] == delim)
+			{
+				if (allow_empties || start != i)
+					result.PushBack(this->Substring(start, i - start));
+				start = i + 1;
+			}
+		}
+		if (start != m_size)
+			result.PushBack(this->Substring(start));
+		return result;
+	}
+
+	StringView::size_type StringView::Count(char ch) const
+	{
+		size_type result = 0;
+		for (size_type i = 0; i < m_size; i++)
+			if (m_data[i] == ch)
+				result++;
+		return result;
+	}
+
+	bool StringView::Empty() const
+	{
+		return m_size == 0;
+	}
+
+	StringView::size_type StringView::Size() const
+	{
+		return m_size;
+	}
+	
+	const char* StringView::Data() const
+	{
+		return m_data;
+	}
+
+}