class RuboCop::Cop::Style::TernaryParentheses

Checks for the presence of parentheses around ternary conditions. It is configurable to enforce inclusion or omission of parentheses using ‘EnforcedStyle`. Omission is only enforced when removing the parentheses won’t cause a different behavior.

‘AllowSafeAssignment` option for safe assignment. By safe assignment we mean putting parentheses around an assignment to indicate “I know I’m using an assignment as a condition. It’s not a mistake.”

@example EnforcedStyle: require_no_parentheses (default)

# bad
foo = (bar?) ? a : b
foo = (bar.baz?) ? a : b
foo = (bar && baz) ? a : b

# good
foo = bar? ? a : b
foo = bar.baz? ? a : b
foo = bar && baz ? a : b

@example EnforcedStyle: require_parentheses

# bad
foo = bar? ? a : b
foo = bar.baz? ? a : b
foo = bar && baz ? a : b

# good
foo = (bar?) ? a : b
foo = (bar.baz?) ? a : b
foo = (bar && baz) ? a : b

@example EnforcedStyle: require_parentheses_when_complex

# bad
foo = (bar?) ? a : b
foo = (bar.baz?) ? a : b
foo = bar && baz ? a : b

# good
foo = bar? ? a : b
foo = bar.baz? ? a : b
foo = (bar && baz) ? a : b

@example AllowSafeAssignment: true (default)

# good
foo = (bar = baz) ? a : b

@example AllowSafeAssignment: false

# bad
foo = (bar = baz) ? a : b