Apply explicit stabilities to unicode parts of CharExt.

src/libunicode/u_char.rs

@@ -19,7 +19,7 @@ use core::option::Option;
 use tables::{derived_property, property, general_category, conversions, charwidth};
 
 /// Functionality for manipulating `char`.
-#[experimental = "pending prelude organization"]
+#[stable]
 pub trait CharExt {
     /// Checks if a `char` parses as a numeric digit in the given radix.
     ///
@@ -103,6 +103,7 @@ pub trait CharExt {
 
     /// Returns whether the specified character is considered a Unicode
     /// alphabetic code point.
+    #[stable]
     fn is_alphabetic(self) -> bool;
 
     /// Returns whether the specified character satisfies the 'XID_Start'
@@ -111,6 +112,7 @@ pub trait CharExt {
     /// 'XID_Start' is a Unicode Derived Property specified in
     /// [UAX #31](http://unicode.org/reports/tr31/#NFKC_Modifications),
     /// mostly similar to ID_Start but modified for closure under NFKx.
+    #[experimental = "mainly needed for compiler internals"]
     fn is_xid_start(self) -> bool;
 
     /// Returns whether the specified `char` satisfies the 'XID_Continue'
@@ -119,38 +121,45 @@ pub trait CharExt {
     /// 'XID_Continue' is a Unicode Derived Property specified in
     /// [UAX #31](http://unicode.org/reports/tr31/#NFKC_Modifications),
     /// mostly similar to 'ID_Continue' but modified for closure under NFKx.
+    #[experimental = "mainly needed for compiler internals"]
     fn is_xid_continue(self) -> bool;
 
     /// Indicates whether a character is in lowercase.
     ///
     /// This is defined according to the terms of the Unicode Derived Core
     /// Property `Lowercase`.
+    #[stable]
     fn is_lowercase(self) -> bool;
 
     /// Indicates whether a character is in uppercase.
     ///
     /// This is defined according to the terms of the Unicode Derived Core
     /// Property `Uppercase`.
+    #[stable]
     fn is_uppercase(self) -> bool;
 
     /// Indicates whether a character is whitespace.
     ///
     /// Whitespace is defined in terms of the Unicode Property `White_Space`.
+    #[stable]
     fn is_whitespace(self) -> bool;
 
     /// Indicates whether a character is alphanumeric.
     ///
     /// Alphanumericness is defined in terms of the Unicode General Categories
     /// 'Nd', 'Nl', 'No' and the Derived Core Property 'Alphabetic'.
+    #[stable]
     fn is_alphanumeric(self) -> bool;
 
     /// Indicates whether a character is a control code point.
     ///
     /// Control code points are defined in terms of the Unicode General
     /// Category `Cc`.
+    #[stable]
     fn is_control(self) -> bool;
 
     /// Indicates whether the character is numeric (Nd, Nl, or No).
+    #[stable]
     fn is_numeric(self) -> bool;
 
     /// Converts a character to its lowercase equivalent.
@@ -162,6 +171,7 @@ pub trait CharExt {
     ///
     /// Returns the lowercase equivalent of the character, or the character
     /// itself if no conversion is possible.
+    #[experimental = "pending case transformation decisions"]
     fn to_lowercase(self) -> char;
 
     /// Converts a character to its uppercase equivalent.
@@ -184,6 +194,7 @@ pub trait CharExt {
     /// [`SpecialCasing`.txt`]: ftp://ftp.unicode.org/Public/UNIDATA/SpecialCasing.txt
     ///
     /// [2]: http://www.unicode.org/versions/Unicode4.0.0/ch03.pdf#G33992
+    #[experimental = "pending case transformation decisions"]
     fn to_uppercase(self) -> char;
 
     /// Returns this character's displayed width in columns, or `None` if it is a
@@ -199,7 +210,7 @@ pub trait CharExt {
     fn width(self, is_cjk: bool) -> Option<uint>;
 }
 
-#[experimental = "pending prelude organization"]
+#[stable]
 impl CharExt for char {
     #[unstable = "pending integer conventions"]
     fn is_digit(self, radix: uint) -> bool { C::is_digit(self, radix) }
@@ -218,6 +229,7 @@ impl CharExt for char {
     #[unstable = "pending decision about Iterator/Writer/Reader"]
     fn encode_utf16(self, dst: &mut [u16]) -> Option<uint> { C::encode_utf16(self, dst) }
 
+    #[stable]
     fn is_alphabetic(self) -> bool {
         match self {
             'a' ... 'z' | 'A' ... 'Z' => true,
@@ -226,10 +238,13 @@ impl CharExt for char {
         }
     }
 
+    #[experimental = "mainly needed for compiler internals"]
     fn is_xid_start(self) -> bool { derived_property::XID_Start(self) }
 
+    #[experimental = "mainly needed for compiler internals"]
     fn is_xid_continue(self) -> bool { derived_property::XID_Continue(self) }
 
+    #[stable]
     fn is_lowercase(self) -> bool {
         match self {
             'a' ... 'z' => true,
@@ -238,6 +253,7 @@ impl CharExt for char {
         }
     }
 
+    #[stable]
     fn is_uppercase(self) -> bool {
         match self {
             'A' ... 'Z' => true,
@@ -246,6 +262,7 @@ impl CharExt for char {
         }
     }
 
+    #[stable]
     fn is_whitespace(self) -> bool {
         match self {
             ' ' | '\x09' ... '\x0d' => true,
@@ -254,12 +271,15 @@ impl CharExt for char {
         }
     }
 
+    #[stable]
     fn is_alphanumeric(self) -> bool {
         self.is_alphabetic() || self.is_numeric()
     }
 
+    #[stable]
     fn is_control(self) -> bool { general_category::Cc(self) }
 
+    #[stable]
     fn is_numeric(self) -> bool {
         match self {
             '0' ... '9' => true,
@@ -268,8 +288,10 @@ impl CharExt for char {
         }
     }
 
+    #[experimental = "pending case transformation decisions"]
     fn to_lowercase(self) -> char { conversions::to_lower(self) }
 
+    #[experimental = "pending case transformation decisions"]
     fn to_uppercase(self) -> char { conversions::to_upper(self) }
 
     #[experimental = "needs expert opinion. is_cjk flag stands out as ugly"]