# rombok
  [](https://github.com/myyrakle/rombok/blob/master/LICENSE)
boilerplate generation macros like lombok.
It automatically creates pattern implementations such as Getter, Setter, and Builder through attribute macros.
## Getter
The Getter macro generates `get_{fieldname}` and `get_{fieldname}_mut` methods for each field of the structure.
```rust
use rombok::Getter;
#[Getter]
struct Person {
name: String,
age: u8,
}
fn main() {
let person = Person {
name: "John".to_string(),
age: 30,
};
let name = person.get_name();
let age = person.get_age();
println!("Hello, world!: {name}, {age}");
}
```
## Setter
The Setter macro generates a `set_{fieldname}` method for each field in the structure.
```rust
use rombok::Setter;
#[Setter]
struct Person {
name: String,
age: u8,
}
fn main() {
let mut person = Person {
name: "John".to_string(),
age: 30,
};
person.set_name("Jane".to_string());
person.set_age(31);
println!("Hello, world!: {}, {}", person.name, person.age);
}
```
## With
With macro generates a `with_{fieldname}` method for each field in the structure.
Unlike Setter, it modifies the value through move and returns the changed object as the return value.
```rust
use rombok::With;
#[With]
struct Person {
name: String,
age: u8,
}
fn main() {
let person = Person {
name: "".to_string(),
age: 0,
}.with_name("Jane".to_string()).with_age(31);
let person = person.with_name("tom".to_string()).with_age(44);
println!("Hello, world!: {}, {}", person.name, person.age);
}
```
## Builder
The Builder macro generates a Builder pattern object for the structure, and adds a builder static method to the structure.
Each method in builder is implemented through the With pattern.
```rust
use rombok::Builder;
#[Builder]
struct Person {
name: String,
age: u8,
}
fn main() {
let person = Person::builder()
.name("Jane".to_string())
.age(31)
.build();
println!("Hello, world!: {}, {}", person.name, person.age);
}
```
## AllArgsConstructor
This is an attribute macro that creates a constructor that initializes all fields of the structure.
```rust
use rombok::AllArgsConstructor;
#[AllArgsConstructor]
struct Person {
name: String,
age: u8,
money: Option<f64>,
point: (u8, u8),
}
fn main() {
let person = Person::with_all_args(
"John".to_string(),
30,
Some(100.0),
(10, 20),
);
let name = person.name;
println!("Hello, world!: {name}");
}
```
## NoArgsConstructor
This is an attribute macro that creates a constructor method that does not receive arguments and initializes all fields to default.
The type of each field must implement the Default trait.
```rust
use rombok::NoArgsConstructor;
#[NoArgsConstructor]
struct Person {
name: String,
age: u8,
money: Option<f64>,
}
fn main() {
let person = Person::with_no_args();
let money = person.money;
println!("Hello, world!: {money:?}");
}
```