Module relations 

Parser for relationship fields like Depends, Recommends, etc.

Example

use debian_control::lossless::relations::{Relations, Relation};
use debian_control::relations::VersionConstraint;

let mut relations: Relations = r"python3-dulwich (>= 0.19.0), python3-requests, python3-urllib3 (<< 1.26.0)".parse().unwrap();
assert_eq!(relations.to_string(), "python3-dulwich (>= 0.19.0), python3-requests, python3-urllib3 (<< 1.26.0)");
assert!(relations.satisfied_by(|name: &str| -> Option<debversion::Version> {
   match name {
   "python3-dulwich" => Some("0.19.0".parse().unwrap()),
   "python3-requests" => Some("2.25.1".parse().unwrap()),
   "python3-urllib3" => Some("1.25.11".parse().unwrap()),
   _ => None
   }}));
relations.remove_entry(1);
relations.get_entry(0).unwrap().get_relation(0).unwrap().set_archqual("amd64");
assert_eq!(relations.to_string(), "python3-dulwich:amd64 (>= 0.19.0), python3-urllib3 (<< 1.26.0)");

Structs

DefaultSortingOrder

Default sorting order (lexicographical with special items last).

Entry

A node in the syntax tree representing a $ast

ParseError

Error type for parsing relations fields

Relation

A node in the syntax tree representing a $ast

RelationBuilder

A builder for creating a Relation

Relations

A node in the syntax tree representing a $ast

Substvar

A node in the syntax tree representing a $ast

WrapAndSortOrder

Sorting order matching wrap-and-sort behavior.

Enums

Lang

Second, implementing the Language trait teaches rowan to convert between these two SyntaxKind types, allowing for a nicer SyntaxNode API where “kinds” are values from our enum SyntaxKind, instead of plain u16 values.

Traits

SortingOrder

Trait for defining sorting order of package relations.

Type Aliases

SyntaxElement

A syntax element (node or token) in the relations tree.

SyntaxNode

A syntax node in the relations tree.

SyntaxToken

A syntax token in the relations tree.