core-text: Add has_table method wrapping CTFontHasTable (#739)

* core-text:Add has_table method wrapping CTFontHasTable

* Fix Build by make lifetimes explicit

* fix clippy lints in array.rs and propertylist.rs

Author: yashjoshi-dotcom

core-foundation/src/array.rs

@@ -242,7 +242,7 @@ mod tests {
         use crate::string::{CFString, CFStringRef};
 
         let cf_string = CFString::from_static_string("alongerstring");
-        let array: CFArray = CFArray::from_CFTypes(&[cf_string.clone()]).into_untyped();
+        let array: CFArray = CFArray::from_CFTypes(std::slice::from_ref(&cf_string)).into_untyped();
 
         let cf_strings = array
             .iter()

core-foundation/src/propertylist.rs

@@ -96,7 +96,7 @@ impl CFPropertyListSubClass for crate::boolean::CFBoolean {}
 impl CFPropertyListSubClass for crate::number::CFNumber {}
 
 declare_TCFType! {
-    /// A CFPropertyList struct. This is superclass to [`CFData`], [`CFString`], [`CFArray`],
+    /// A `CFPropertyList` struct. This is superclass to [`CFData`], [`CFString`], [`CFArray`],
     /// [`CFDictionary`], [`CFDate`], [`CFBoolean`], and [`CFNumber`].
     ///
     /// This superclass type does not have its own `CFTypeID`, instead each instance has the `CFTypeID`

core-text/src/font.rs

@@ -438,6 +438,10 @@ impl CTFont {
         CTFontGetVerticalTranslationsForGlyphs(self.0, orientation, glyphs, translations, count)
     }
 
+    pub fn has_table(&self, tag: u32) -> bool {
+        unsafe { CTFontHasTable(self.0, tag as CTFontTableTag) }
+    }
+
     pub fn get_font_table(&self, tag: u32) -> Option<CFData> {
         unsafe {
             let result = CTFontCopyTable(
@@ -805,6 +809,8 @@ extern "C" {
     ) -> CFDataRef;
 
     fn CTFontGetTypeID() -> CFTypeID;
+
+    fn CTFontHasTable(font: CTFontRef, table: CTFontTableTag) -> bool;
 }
 
 #[test]

core-text/src/run.rs

@@ -44,7 +44,7 @@ impl CTRun {
         unsafe { CTRunGetGlyphCount(self.0) }
     }
 
-    pub fn glyphs(&self) -> Cow<[CGGlyph]> {
+    pub fn glyphs(&self) -> Cow<'_, [CGGlyph]> {
         unsafe {
             // CTRunGetGlyphsPtr can return null under some not understood circumstances.
             // If it does the Apple documentation tells us to allocate our own buffer and call
@@ -64,7 +64,7 @@ impl CTRun {
         }
     }
 
-    pub fn positions(&self) -> Cow<[CGPoint]> {
+    pub fn positions(&self) -> Cow<'_, [CGPoint]> {
         unsafe {
             // CTRunGetPositionsPtr can return null under some not understood circumstances.
             // If it does the Apple documentation tells us to allocate our own buffer and call
@@ -112,7 +112,7 @@ impl CTRun {
         }
     }
 
-    pub fn string_indices(&self) -> Cow<[CFIndex]> {
+    pub fn string_indices(&self) -> Cow<'_, [CFIndex]> {
         unsafe {
             // CTRunGetStringIndicesPtr can return null under some not understood circumstances.
             // If it does the Apple documentation tells us to allocate our own buffer and call