Merge pull request SSheldon#11 from madsmtm/encoding-parameter-size

Change Encoding parameter sizes

Author: madsmtm

objc_encode/src/encode.rs

@@ -64,7 +64,7 @@ unsafe impl Encode for *const c_void {
 }
 
 unsafe impl<T: Encode, const LENGTH: usize> Encode for [T; LENGTH] {
-    const ENCODING: Encoding<'static> = Encoding::Array(LENGTH as u32, &<T as Encode>::ENCODING);
+    const ENCODING: Encoding<'static> = Encoding::Array(LENGTH, &<T as Encode>::ENCODING);
 }
 
 // External crates cannot implement Encode for pointers or [`Option`], but

objc_encode/src/encoding.rs

@@ -28,9 +28,9 @@ pub enum Encoding<'a> {
     Class,
     Sel,
     Unknown,
-    BitField(u32),
+    BitField(u8),
     Pointer(&'a Encoding<'a>),
-    Array(u32, &'a Encoding<'a>),
+    Array(usize, &'a Encoding<'a>),
     Struct(&'a str, &'a [Encoding<'a>]),
     Union(&'a str, &'a [Encoding<'a>]),
 }

objc_encode/src/parse.rs

@@ -37,7 +37,7 @@ fn rm_enc_prefix<'a>(s: &'a str, enc: &Encoding<'_>) -> Option<&'a str> {
         Unknown => "?",
         BitField(b) => {
             let s = s.strip_prefix('b')?;
-            return rm_int_prefix(s, b);
+            return rm_int_prefix(s, b as usize);
         }
         Pointer(t) => {
             let s = s.strip_prefix('^')?;
@@ -75,7 +75,7 @@ fn rm_enc_prefix<'a>(s: &'a str, enc: &Encoding<'_>) -> Option<&'a str> {
     s.strip_prefix(code)
 }
 
-fn chomp_int(s: &str) -> Option<(u32, &str)> {
+fn chomp_int(s: &str) -> Option<(usize, &str)> {
     // Chomp until we hit a non-digit
     let (num, t) = match s.find(|c: char| !c.is_digit(10)) {
         Some(i) => s.split_at(i),
@@ -84,7 +84,7 @@ fn chomp_int(s: &str) -> Option<(u32, &str)> {
     num.parse().map(|n| (n, t)).ok()
 }
 
-fn rm_int_prefix(s: &str, other: u32) -> Option<&str> {
+fn rm_int_prefix(s: &str, other: usize) -> Option<&str> {
     chomp_int(s).and_then(|(n, t)| if other == n { Some(t) } else { None })
 }