get rid of nasty stdlib

1 files changed, 40 insertions, 0 deletions

diff --git a/lib/nes/common/containers/string-view.hh b/lib/nes/common/containers/string-view.hh
new file mode 100644
index 0000000..180a688
--- /dev/null
+++ b/lib/nes/common/containers/string-view.hh
@@ -0,0 +1,40 @@
+#pragma once
+
+#include "nes/common/containers/span.hh"
+#include "nes/common/types.hh"
+
+namespace nes
+{
+	/// Non-owning view into a (not necessarily null-terminated) string.
+	class string_view
+	{
+		span<char const> data_;
+
+	public:
+		explicit string_view() = default;
+		explicit string_view(span<char const>);
+		explicit string_view(char const* data, u32 length);
+		string_view(char const* c_string);
+
+		using iterator = span<char const>::iterator;
+
+		auto operator[](u32 const index) const -> char { return data_[index]; }
+		auto get_span() const -> span<char const> { return data_; }
+		auto get_data() const -> char const* { return data_.get_data(); }
+		auto get_length() const -> u32 { return data_.get_length(); }
+		auto is_empty() const -> bool { return get_length() == 0; }
+		auto begin() const -> iterator { return data_.begin(); }
+		auto end() const -> iterator { return data_.end(); }
+
+		// String helpers
+
+		auto get_first() const -> char;
+		auto get_last() const -> char;
+		auto contains(char) const -> bool;
+		auto substring(u32 first) const -> string_view;
+		auto substring(u32 first, u32 length) const -> string_view;
+	};
+
+	auto operator==(string_view, string_view) -> bool;
+	auto operator!=(string_view, string_view) -> bool;
+} // namespace nes
\ No newline at end of file