From 79a65ce58ad8f3b2b1c9eeaba4b0b4710dc09e2c Mon Sep 17 00:00:00 2001
From: Adrian Kummerländer
Date: Sat, 15 Feb 2014 12:48:35 +0100
Subject: 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

---
 src/utility.h | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 src/utility.h

(limited to 'src/utility.h')

diff --git a/src/utility.h b/src/utility.h
new file mode 100644
index 0000000..dcdcf75
--- /dev/null
+++ b/src/utility.h
@@ -0,0 +1,29 @@
+#ifndef CODEPOINT_ITERATOR_UTILITY_H_
+#define CODEPOINT_ITERATOR_UTILITY_H_
+
+#include <cstdint>
+
+namespace UTF8 {
+namespace dtl {
+
+enum class CodeUnitType : uint8_t {
+	CONTINUATION = (128 >> 0),       // 10000000
+	LEADING      = (128 >> 1),       // 01000000
+	THREE        = (128 >> 2),       // 00100000
+	FOUR         = (128 >> 3),       // 00010000
+};
+
+enum class CodePoint : uint8_t {
+	CONTINUATION = (UINT8_MAX >> 2), // 00111111
+	TWO          = (UINT8_MAX >> 3), // 00011111
+	THREE        = (UINT8_MAX >> 4), // 00001111
+	FOUR         = (UINT8_MAX >> 5), // 00000111
+};
+
+bool match(const uint8_t&, CodeUnitType&&);
+void write(char32_t&, const uint8_t&, CodePoint&&, const uint8_t&);
+
+}
+}
+
+#endif  // CODEPOINT_ITERATOR_UTILITY_H_
-- 
cgit v1.2.3