mirror of https://github.com/Wilfred/difftastic/
82 lines
2.2 KiB
Markdown
82 lines
2.2 KiB
Markdown
# tree-sitter-objc
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This crate provides an Objective-C grammar for the [tree-sitter][] parsing library. To
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use this crate, add it to the `[dependencies]` section of your `Cargo.toml`
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file. (Note that you will probably also need to depend on the
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[`tree-sitter`][tree-sitter crate] crate to use the parsed result in any useful
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way.)
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```toml
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[dependencies]
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tree-sitter = "~0.20.10"
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tree-sitter-objc = "2.1.0"
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```
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Typically, you will use the [language][language func] function to add this
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grammar to a tree-sitter [Parser][], and then use the parser to parse some code:
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```rust
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let code = r#"
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#import <Foundation/Foundation.h>
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// Defining a class interface
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@interface Person : NSObject
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// Declaring properties
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@property (nonatomic, strong) NSString *name;
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@property (nonatomic, assign) NSInteger age;
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// Declaring methods
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- (instancetype)initWithName:(NSString *)name age:(NSInteger)age;
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- (void)greet;
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@end
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@implementation Person
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// Implementing the initializer
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- (instancetype)initWithName:(NSString *)name age:(NSInteger)age {
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self = [super init];
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if (self) {
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_name = name;
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_age = age;
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}
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return self;
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}
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// Implementing the greet method
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- (void)greet {
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NSLog(@"Hello, my name is %@ and I'm %ld years old.", self.name, (long)self.age);
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}
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@end
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int main(int argc, const char * argv[]) {
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@autoreleasepool {
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// Creating an instance of Person
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Person *person = [[Person alloc] initWithName:@"John" age:25];
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// Accessing properties
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NSString *name = person.name;
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NSInteger age = person.age;
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// Calling a method
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[person greet];
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}
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return 0;
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}
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"#;
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let mut parser = Parser::new();
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parser.set_language(tree_sitter_objc::language()).expect("Error loading Objective-C grammar");
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let parsed = parser.parse(code, None);
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```
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If you have any questions, please reach out to us in the [tree-sitter
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discussions] page.
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[language func]: https://docs.rs/tree-sitter-objc/*/tree_sitter_objc/fn.language.html
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[parser]: https://docs.rs/tree-sitter/*/tree_sitter/struct.Parser.html
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[tree-sitter]: https://tree-sitter.github.io/
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[tree-sitter crate]: https://crates.io/crates/tree-sitter
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[tree-sitter discussions]: https://github.com/tree-sitter/tree-sitter/discussions
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