From: Lucas Bajolet <r4pass@hotmail.com>
Date: Fri, 6 May 2016 15:42:39 +0000 (-0400)
Subject: lib/core: Added surrogate detection methods to `Char`
X-Git-Url: http://nitlanguage.org

lib/core: Added surrogate detection methods to `Char`

Signed-off-by: Lucas Bajolet <r4pass@hotmail.com>
---

diff --git a/lib/core/text/abstract_text.nit b/lib/core/text/abstract_text.nit
index c15901e..6c2acd4 100644
--- a/lib/core/text/abstract_text.nit
+++ b/lib/core/text/abstract_text.nit
@@ -1755,6 +1755,18 @@ redef class Char
 		return cp >= 0xD800 and cp <= 0xDFFF
 	end
 
+	# Is `self` a UTF-16 high surrogate ?
+	fun is_hi_surrogate: Bool do
+		var cp = code_point
+		return cp >= 0xD800 and cp <= 0xDBFF
+	end
+
+	# Is `self` a UTF-16 low surrogate ?
+	fun is_lo_surrogate: Bool do
+		var cp = code_point
+		return cp >= 0xDC00 and cp <= 0xDFFF
+	end
+
 	# Length of `self` in a UTF-8 String
 	fun u8char_len: Int do
 		var c = self.code_point