Struct rslint_core::groups::errors::NoExtraBooleanCast

pub struct NoExtraBooleanCast {
    pub enforce_for_logical_operands: bool,
}

Disallow unnecessary boolean casts.

In contexts where expression will be coerced to a Boolean (e.g. if), casting to a boolean (using !! or Boolean(expr)) is unnecessary.

Invalid Code Examples

if (!!foo) {}
while (!!foo) {}

var foo = !!!bar;
var foo = Boolean(!!bar);

Fields

enforce_for_logical_operands: bool

If this option is true, this rule will also check for unnecessary boolean cast inside logical expression, which is disabled by default.

Implementations

impl NoExtraBooleanCast

pub fn new() -> Self

Trait Implementations

impl Clone for NoExtraBooleanCast

fn clone(&self) -> NoExtraBooleanCast

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl CstRule for NoExtraBooleanCast

fn check_node(&self, node: &SyntaxNode, ctx: &mut RuleCtx) -> Option<()>

Check an individual node in the syntax tree. You can use the match_ast macro to make matching a node to an ast node easier. The reason this uses nodes and not a visitor is because nodes are more flexible, converting them to an AST node has zero cost and you can easily traverse surrounding nodes. Defaults to doing nothing.

fn check_token(&self, token: &SyntaxToken, ctx: &mut RuleCtx) -> Option<()>

Check an individual token in the syntax tree. Defaults to doing nothing.

fn check_root(&self, root: &SyntaxNode, ctx: &mut RuleCtx) -> Option<()>

Check the root of the tree one time. This method is guaranteed to only be called once. The root's kind will be either SCRIPT or MODULE. Defaults to doing nothing.

impl Debug for NoExtraBooleanCast

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for NoExtraBooleanCast

fn default() -> NoExtraBooleanCast

Returns the "default value" for a type.

impl<'de> Deserialize<'de> for NoExtraBooleanCast where
    NoExtraBooleanCast: Default, 

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error> where
    __D: Deserializer<'de>, 

Deserialize this value from the given Serde deserializer.

impl Rule for NoExtraBooleanCast

fn name(&self) -> &'static str

A unique, kebab-case name for the rule.

fn group(&self) -> &'static str

The name of the group this rule belongs to.

impl Serialize for NoExtraBooleanCast

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error> where
    __S: Serializer, 

Serialize this value into the given Serde serializer.