lib: Changes in the way ascii is coded and its semantics.

[nit.git] / lib / core / kernel.nit

diff --git a/lib/core/kernel.nit b/lib/core/kernel.nit
index b2ac524..a8ec1c5 100644 (file)
--- a/lib/core/kernel.nit
+++ b/lib/core/kernel.nit
@@ -797,11 +797,12 @@ universal Int
                end
        end
 
-       # The character whose ASCII value is `self`.
+       # The character which code point (unicode-wise) is `self`
        #
-       #     assert 65.ascii   == 'A'
-       #     assert 10.ascii   == '\n'
-       fun ascii: Char is intern
+       #     assert 65.code_point == 'A'
+       #     assert 10.code_point == '\n'
+       #     assert 0x220B.code_point == '∋'
+       fun code_point: Char `{ return (uint32_t)self; `}
 
        # Number of digits of an integer in base `b` (plus one if negative)
        #
@@ -942,11 +943,26 @@ universal Char
                end
        end
 
-       # the ascii value of self
+       # The ascii value of `self`
        #
-       #     assert 'a'.ascii    == 97
-       #     assert '\n'.ascii   == 10
-       fun ascii: Int is intern
+       #     assert 'a'.ascii    == 97u8
+       #     assert '\n'.ascii   == 10u8
+       #
+       # REQUIRE: `is_ascii`
+       fun ascii: Byte do return code_point.to_b
+
+       # The unicode code point value of `self`
+       #
+       #     assert 'A'.code_point == 65
+       #     assert '\n'.code_point == 10
+       #     assert '∋'.code_point == 0x220B
+       fun code_point: Int `{ return (long)self; `}
+
+       # Is `self` an ASCII character ?
+       #
+       #     assert 'x'.is_ascii
+       #     assert not 'ま'.is_ascii
+       fun is_ascii: Bool do return code_point <= 127
 
        # Return the lower case version of self.
        # If self is not a letter, then return self