Struct valkyrie_ast::GuardStatement

pub struct GuardStatement {
    pub negative: bool,
    pub condition: ExpressionNode,
    pub main_body: GuardPattern,
    pub span: Range<u32>,
}

guard a > 0 { ... }

The else block must use control.

 
assert a > 0 {
    panic!("a must be greater than 0");
}

assert let Some(a) = b {
    panic!("b must be Some");
}



if a < 0 {
    return error;
}
do_something_else();

guard let Failure(error) = e if xxx then { ... }

The else block must use control.

if e.is_failure() {
    let error = x.as_failure();
    return error;
}
do_something_else();

Fields

negative: bool

The condition to check

condition: ExpressionNode

The condition to check

main_body: GuardPattern

same as if condition

span: Range<u32>

The range of the node

Trait Implementations

impl Clone for GuardStatement

fn clone(&self) -> GuardStatement

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for GuardStatement

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

Formats the value using the given formatter.

impl From<GuardStatement> for ExpressionKind

fn from(o: GuardStatement) -> Self

Converts to this type from the input type.

impl From<GuardStatement> for StatementKind

fn from(o: GuardStatement) -> Self

Converts to this type from the input type.

impl Hash for GuardStatement

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for GuardStatement

fn eq(&self, other: &GuardStatement) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl ValkyrieNode for GuardStatement

fn get_range(&self) -> Range<usize>

The range of the node

fn get_start(&self) -> usize

Get the start of the node

fn get_end(&self) -> usize

Get the end of the node

impl Eq for GuardStatement

impl StructuralPartialEq for GuardStatement