Extracted helper functions and bitmasks into separate compilation unit

* utility.h and utility.cc now contain the UTF8-codepoint and unit bitmasks and read / write functions
* Modified users of these functions and unions accordingly
* Added the new compilation unit to the Makefile
* Changed bitmask specification from plain integer literals to shift expressions for better readability

1 files changed, 18 insertions, 0 deletions

diff --git a/src/utility.cc b/src/utility.cc
new file mode 100644
index 0000000..92ba7b9
--- /dev/null
+++ b/src/utility.cc
@@ -0,0 +1,18 @@
+#include "utility.h"
+
+namespace UTF8 {
+namespace dtl {
+
+bool match(const uint8_t& codeUnit, CodeUnitType&& type) {
+	return codeUnit & static_cast<uint8_t>(type);
+}
+
+void write(char32_t& codePoint,
+           const uint8_t& codeUnit,
+           CodePoint&& mask,
+           const uint8_t& offset) {
+	codePoint += (codeUnit & static_cast<uint8_t>(mask)) << offset;
+}
+
+}
+}