Struct Relations 

pub struct Relations(/* private fields */);

A node in the syntax tree representing a $ast

Implementations

impl Relations

pub fn new() -> Self

Create a new relations field

pub fn wrap_and_sort(self) -> Self

Wrap and sort this relations field

pub fn relations(&self) -> impl Iterator<Item = Relation> + '_

Iterate over the entries in this relations field

pub fn iter(&self) -> impl Iterator<Item = Relation> + '_

Iterate over the entries in this relations field

pub fn get_relation(&self, idx: usize) -> Option<Relation>

Remove the entry at the given index

pub fn remove_relation(&mut self, idx: usize) -> Relation

Remove the relation at the given index

pub fn insert(&mut self, idx: usize, relation: Relation)

Insert a new relation at the given index

pub fn replace(&mut self, idx: usize, relation: Relation)

Replace the relation at the given index

pub fn push(&mut self, relation: Relation)

Push a new relation to the relations field

pub fn parse_relaxed(s: &str) -> (Relations, Vec<String>)

Parse a relations field from a string, allowing syntax errors

pub fn satisfied_by(&self, package_version: impl VersionLookup + Copy) -> bool

Check if this relations field is satisfied by the given package versions.

pub fn is_empty(&self) -> bool

Check if this relations field is empty

pub fn len(&self) -> usize

Get the number of entries in this relations field

Trait Implementations

impl Debug for Relations

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

Formats the value using the given formatter.

impl Default for Relations

fn default() -> Self

Returns the “default value” for a type.

impl Display for Relations

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

Formats the value using the given formatter.

impl From<Relation> for Relations

fn from(relation: Relation) -> Self

Converts to this type from the input type.

impl From<Relations> for Relations

fn from(relations: Relations) -> Self

Converts to this type from the input type.

impl From<Relations> for Relations

fn from(relations: Relations) -> Self

Converts to this type from the input type.

impl From<Vec<Relation>> for Relations

fn from(entries: Vec<Relation>) -> Self

Converts to this type from the input type.

impl FromStr for Relations

type Err = String

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type.

impl PartialEq for Relations

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

Tests for self and other values to be equal, and is used by ==.

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

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