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org.sonar.l10n.javascript.rules.javascript.S4275.html Maven / Gradle / Ivy
Getters and setters provide a way to enforce encapsulation by providing public
methods that give controlled access to
private
fields. However in classes with multiple fields it is not unusual that copy and paste is used to quickly create the needed
getters and setters, which can result in the wrong field being accessed by a getter or setter.
This rule raises an issue in any of these cases:
- A setter does not update the field with the corresponding name.
- A getter does not access the field with the corresponding name.
Noncompliant Code Example
class A {
#x: number = 0;
#y: number = 0;
get x() { // Noncompliant: field 'x' is not used in the return value
return this.#y;
}
set x(val: number) { // Noncompliant: field 'x' is not updated
this.#y = val;
}
getY() { // Noncompliant: field 'y' is not used in the return value
}
setY(val: number) { // Noncompliant: field 'y' is not updated
}
}
const obj = {
_x: 0,
_y: 0,
get x() { // Noncompliant: field '_x' is not used in the return value
return this._y;
}
};
let x = 0;
let y = 0;
Object.defineProperty(o, 'x', {
get() { // Noncompliant: variable 'x' is not used in the return value
return y;
}
});
Compliant Solution
class A {
#x: number = 0;
#y: number = 0;
get x() {
return this.#x;
}
set x(val: number) {
this.#x = val;
}
getY() {
return this.#y;
}
setY(val: number) {
this.#y = val;
}
}
const obj = {
_x: 0,
_y: 0,
get x() {
return this._x;
}
};
let x = 0;
let y = 0;
Object.defineProperty(o, 'x', {
get() {
return x;
}
});
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