VersionConstraint class abstract

A VersionConstraint is a predicate that can determine whether a given version is valid or not.

For example, a ">= 2.0.0" constraint allows any version that is "2.0.0" or greater. Version objects themselves implement this to match a specific version.

Constructors

VersionConstraint.compatibleWith(Version version): Creates a version constraint which allows all versions that are backward compatible with version.
factory
VersionConstraint.intersection(Iterable<VersionConstraint> constraints): Creates a new version constraint that is the intersection of constraints.
factory
VersionConstraint.parse(String text): Parses a version constraint.
factory
VersionConstraint.unionOf(Iterable<VersionConstraint> constraints): Creates a new version constraint that is the union of constraints.
factory

Properties

hashCode → int: The hash code for this object.
no setterinherited
isAny → bool: Returns true if this constraint allows all versions.
no setter
isEmpty → bool: Returns true if this constraint allows no versions.
no setter
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited

Methods

allows(Version version) → bool: Returns true if this constraint allows version.
allowsAll(VersionConstraint other) → bool: Returns true if this constraint allows all the versions that other allows.
allowsAny(VersionConstraint other) → bool: Returns true if this constraint allows any of the versions that other allows.
difference(VersionConstraint other) → VersionConstraint: Returns a VersionConstraint that allows Versions allowed by this but not other.
intersect(VersionConstraint other) → VersionConstraint: Returns a VersionConstraint that only allows Versions allowed by both this and other.
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
toString() → String: A string representation of this object.
inherited
union(VersionConstraint other) → VersionConstraint: Returns a VersionConstraint that allows Versions allowed by either this or other.

Operators

operator ==(Object other) → bool: The equality operator.
inherited

Static Properties

any ↔ VersionConstraint: A VersionConstraint that allows all versions.
getter/setter pair
empty ↔ VersionConstraint: A VersionConstraint that allows no versions -- the empty set.
getter/setter pair