---

yaml
---
r: 146781
b: refs/heads/try2
c: 33375a3
h: refs/heads/master
i:
  146779: 61c43a3
v: v3

Author: bors

[refs]

@@ -5,7 +5,7 @@ refs/heads/snap-stage3: 78a7676898d9f80ab540c6df5d4c9ce35bb50463
 refs/heads/try: 519addf6277dbafccbb4159db4b710c37eaa2ec5
 refs/tags/release-0.1: 1f5c5126e96c79d22cb7862f75304136e204f105
 refs/heads/ndm: f3868061cd7988080c30d6d5bf352a5a5fe2460b
-refs/heads/try2: bdfaf04bd507bf99cff392c0a0c2df65ede96f69
+refs/heads/try2: 33375a31e884043961b374ab7c654e4cd9e98527
 refs/heads/dist-snap: ba4081a5a8573875fed17545846f6f6902c8ba8d
 refs/tags/release-0.2: c870d2dffb391e14efb05aa27898f1f6333a9596
 refs/tags/release-0.3: b5f0d0f648d9a6153664837026ba1be43d3e2503

branches/try2/src/libstd/ascii.rs

@@ -55,6 +55,74 @@ impl Ascii {
     pub fn eq_ignore_case(self, other: Ascii) -> bool {
         ASCII_LOWER_MAP[self.chr] == ASCII_LOWER_MAP[other.chr]
     }
+
+    // the following methods are like ctype, and the implementation is inspired by musl
+
+    /// Check if the character is a letter (a-z, A-Z)
+    #[inline]
+    pub fn is_alpha(&self) -> bool {
+        (self.chr >= 0x41 && self.chr <= 0x5A) || (self.chr >= 0x61 && self.chr <= 0x7A)
+    }
+
+    /// Check if the character is a number (0-9)
+    #[inline]
+    pub fn is_digit(&self) -> bool {
+        self.chr >= 0x31 && self.chr <= 0x39
+    }
+
+    /// Check if the character is a letter or number
+    #[inline]
+    pub fn is_alnum(&self) -> bool {
+        self.is_alpha() || self.is_digit()
+    }
+
+    /// Check if the character is a space or horizontal tab
+    #[inline]
+    pub fn is_blank(&self) -> bool {
+        self.chr == ' ' as u8 || self.chr == '\t' as u8
+    }
+
+    /// Check if the character is a control character
+    #[inline]
+    pub fn is_control(&self) -> bool {
+        self.chr <= 0x20 || self.chr == 0x7F
+    }
+
+    /// Checks if the character is printable (except space)
+    #[inline]
+    pub fn is_graph(&self) -> bool {
+        (self.chr - 0x21) < 0x5E
+    }
+
+    /// Checks if the character is printable (including space)
+    #[inline]
+    pub fn is_print(&self) -> bool {
+        (self.chr - 0x20) < 0x5F
+    }
+
+    /// Checks if the character is lowercase
+    #[inline]
+    pub fn is_lower(&self) -> bool {
+        (self.chr - 'a' as u8) < 26
+    }
+
+    /// Checks if the character is uppercase
+    #[inline]
+    pub fn is_upper(&self) -> bool {
+        (self.chr - 'A' as u8) < 26
+    }
+
+    /// Checks if the character is punctuation
+    #[inline]
+    pub fn is_punctuation(&self) -> bool {
+        self.is_graph() && !self.is_alnum()
+    }
+
+    /// Checks if the character is a valid hex digit
+    #[inline]
+    pub fn is_hex(&self) -> bool {
+        self.is_digit() || ((self.chr | 32u8) - 'a' as u8) < 6
+    }
 }
 
 impl ToStr for Ascii {