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Add optimized functions for creating selectors using property keys
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,31 @@ | ||
| // | ||
| // MTLReflection.h | ||
| // Mantle | ||
| // | ||
| // Created by Justin Spahr-Summers on 2013-03-12. | ||
| // Copyright (c) 2013 GitHub. All rights reserved. | ||
| // | ||
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| #import <Foundation/Foundation.h> | ||
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| // Creates a selector from a key and a constant string. | ||
| // | ||
| // key - The key to insert into the generated selector. This key should be in | ||
| // its natural case. | ||
| // suffix - A string to append to the key as part of the selector. | ||
| // | ||
| // Returns a selector, or NULL if the input strings cannot form a valid | ||
| // selector. | ||
| SEL MTLSelectorWithKeyPattern(NSString *key, NSString *suffix) __attribute__((pure, nonnull(1, 2))); | ||
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| // Creates a selector from a key and a constant prefix and suffix. | ||
| // | ||
| // prefix - A string to prepend to the key as part of the selector. | ||
| // key - The key to insert into the generated selector. This key should be in | ||
| // its natural case, and will have its first letter capitalized when | ||
| // inserted. | ||
| // suffix - A string to append to the key as part of the selector. | ||
| // | ||
| // Returns a selector, or NULL if the input strings cannot form a valid | ||
| // selector. | ||
| SEL MTLSelectorWithCapitalizedKeyPattern(NSString *prefix, NSString *key, NSString *suffix) __attribute__((pure, nonnull(1, 2, 3))); |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,42 @@ | ||
| // | ||
| // MTLReflection.m | ||
| // Mantle | ||
| // | ||
| // Created by Justin Spahr-Summers on 2013-03-12. | ||
| // Copyright (c) 2013 GitHub. All rights reserved. | ||
| // | ||
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| #import "MTLReflection.h" | ||
| #import <objc/runtime.h> | ||
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| SEL MTLSelectorWithKeyPattern(NSString *key, NSString *suffix) { | ||
| NSUInteger keyLength = [key lengthOfBytesUsingEncoding:NSUTF8StringEncoding]; | ||
| NSUInteger suffixLength = [suffix lengthOfBytesUsingEncoding:NSUTF8StringEncoding]; | ||
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| char selector[keyLength + suffixLength + 1]; | ||
| memcpy(selector, key.UTF8String, keyLength); | ||
| memcpy(selector + keyLength, suffix.UTF8String, suffixLength); | ||
| selector[sizeof(selector) - 1] = '\0'; | ||
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| return sel_registerName(selector); | ||
| } | ||
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| SEL MTLSelectorWithCapitalizedKeyPattern(NSString *prefix, NSString *key, NSString *suffix) { | ||
| NSUInteger prefixLength = [prefix lengthOfBytesUsingEncoding:NSUTF8StringEncoding]; | ||
| NSUInteger suffixLength = [suffix lengthOfBytesUsingEncoding:NSUTF8StringEncoding]; | ||
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| NSString *initial = [key substringToIndex:1].uppercaseString; | ||
| NSUInteger initialLength = [initial lengthOfBytesUsingEncoding:NSUTF8StringEncoding]; | ||
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| NSString *rest = [key substringFromIndex:1]; | ||
| NSUInteger restLength = [rest lengthOfBytesUsingEncoding:NSUTF8StringEncoding]; | ||
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| char selector[prefixLength + initialLength + restLength + suffixLength + 1]; | ||
| memcpy(selector, prefix.UTF8String, prefixLength); | ||
| memcpy(selector + prefixLength, initial.UTF8String, initialLength); | ||
| memcpy(selector + prefixLength + initialLength, rest.UTF8String, restLength); | ||
| memcpy(selector + prefixLength + initialLength + restLength, suffix.UTF8String, suffixLength); | ||
| selector[sizeof(selector) - 1] = '\0'; | ||
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| return sel_registerName(selector); | ||
| } |