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| -rw-r--r-- | docs/ObjectiveCLiterals.html | 12 | ||||
| -rw-r--r-- | test/CodeGenObjC/boxing.m | 7 |
2 files changed, 19 insertions, 0 deletions
diff --git a/docs/ObjectiveCLiterals.html b/docs/ObjectiveCLiterals.html index ca7704d0a2..33f73e4a5b 100644 --- a/docs/ObjectiveCLiterals.html +++ b/docs/ObjectiveCLiterals.html @@ -157,6 +157,18 @@ NSNumber *red = @(Red), *green = @(Green), *blue = @(Blue); // => [NSNumber numb then the fixed underlying type will be used to select the correct <code>NSNumber</code> creation method. </p> +<p> +Boxing a value of enum type will result in a <code>NSNumber</code> pointer with a creation method according to the underlying type of the enum, +which can be a <a href="http://clang.llvm.org/docs/LanguageExtensions.html#objc_fixed_enum">fixed underlying type</a> or a compiler-defined +integer type capable of representing the values of all the members of the enumeration: +</p> + +<pre> +typedef enum : unsigned char { Red, Green, Blue } Color; +Color col = Red; +NSNumber *nsCol = @(col); // => [NSNumber numberWithUnsignedChar:] +</pre> + <h3>Boxed C Strings</h3> <p> diff --git a/test/CodeGenObjC/boxing.m b/test/CodeGenObjC/boxing.m index 3c24779f9a..9664298154 100644 --- a/test/CodeGenObjC/boxing.m +++ b/test/CodeGenObjC/boxing.m @@ -85,4 +85,11 @@ int main() { @((NSUInteger)i); // CHECK: load i8** [[stringWithUTF8StringSEL]] const char *s; @(s); + + typedef enum : NSInteger { Red, Green, Blue } Color; + // CHECK: load i8** [[WithIntegerSEL]] + @(Red); + Color col = Red; + // CHECK: load i8** [[WithIntegerSEL]] + @(col); } |