Trait juniper::LookAheadMethods

pub trait LookAheadMethods<'sel, S> {
    fn field_name(&self) -> &'sel str;
    fn select_child(&self, name: &str) -> Option<&Self>;
    fn has_arguments(&self) -> bool;
    fn has_children(&self) -> bool;
    fn arguments(&self) -> &[LookAheadArgument<'_, S>];
    fn child_names(&self) -> Vec<&'sel str>;
    fn children(&self) -> Vec<&Self>;

    fn has_child(&self, name: &str) -> bool { ... }
    fn argument(&self, name: &str) -> Option<&LookAheadArgument<'_, S>> { ... }
}

Set of common methods for ConcreteLookAheadSelection and LookAheadSelection.

'sel lifetime is intended to point to the data that this LookAheadSelection (or ConcreteLookAheadSelection) points to.

Required Methods

fn field_name(&self) -> &'sel str

Get the (potentially aliased) name of the field represented by the current selection

fn select_child(&self, name: &str) -> Option<&Self>

Get the the child selection for a given field If a child has an alias, it will only match if the alias matches name

fn has_arguments(&self) -> bool

Does the current node have any arguments?

fn has_children(&self) -> bool

Does the current node have any children?

fn arguments(&self) -> &[LookAheadArgument<'_, S>]

Get the top level arguments for the current selection

fn child_names(&self) -> Vec<&'sel str>

Get the (possibly aliased) names of the top level children for the current selection

fn children(&self) -> Vec<&Self>

Get an iterator over the children for the current selection

Provided Methods

fn has_child(&self, name: &str) -> bool

Check if a given child selection with a name exists If a child has an alias, it will only match if the alias matches name

fn argument(&self, name: &str) -> Option<&LookAheadArgument<'_, S>>

Get the top level argument with a given name from the current selection

Implementors

impl<'a, S> LookAheadMethods<'a, S> for ConcreteLookAheadSelection<'a, S>

impl<'a, S> LookAheadMethods<'a, S> for LookAheadSelection<'a, S>