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Metadata

ID: kotlin-code-style/if-else-wrapping

Language: Kotlin

Severity: Notice

Category: Code Style

Description

Inconsistent formatting of our if/else statements could mislead you to their structure, especially if you have multiple nested if/else statements.

  • Use braces whenever you nest an ‘if’ statement inside another ‘if’ statement, except for if ... else if ... sequences.
  • If one of the branches of the ‘if’ statement uses braces, use braces in both branches.
  • Short, single-line branches of an ‘if’ statement should not use braces. If you must use braces, split it into several lines.

Non-Compliant Code Examples

fun foobar() {
    if (true) if (false) foo()
    if (true)
        foo()
    else
        if (false)
            bar()
    if (true) { foo() }
    if (true) {
        foo()
    } else { bar() }

    if (true) {
        foo()
    } else bar()
    if (true) foo()
    else {
        bar()
    }
}

Compliant Code Examples

fun foobar() {
    if (true) foo()
    if (true) foo() else bar()
    if (true) foo() else if (false) bar() else baz()

    if (true)
        foo()
    else if (false)
        bar()

    if (true)
        foo()
    else
        bar()

    if (true) {
        if (false) foo() else bar()
    } else {
        bar()
    }
}
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