SdkVersionConstraint class

Parses and evaluates a Dart/Flutter SDK version constraint expression.

Delegates all constraint matching to TemplateSemVer.satisfies() to avoid duplicating version logic. The primary role of this class is:

• Validate that a constraint string is well-formed and parseable.
• Evaluate whether a concrete SDK version satisfies the constraint.
• Provide human-readable descriptions of the constraint for diagnostics.

Supported Constraint Syntax

Inherits all forms supported by TemplateSemVer.satisfies():

• * — any version
• >=1.0.0 <2.0.0 — compound range
• ^1.0.0 — caret (same major)
• >=1.0.0, >1.0.0, <=1.0.0, <1.0.0
• 1.0.0 or =1.0.0 — exact version

Security

This class must never expose SDK install paths, file system state, or process environment. It accepts version strings as pure text values and performs only arithmetic comparison.

Constructors

SdkVersionConstraint.parse(String constraint)

Parses constraint and returns a validated SdkVersionConstraint.

factory

Properties

hashCode → int

The hash code for this object.

no setter, override

isWildcard → bool

Whether this constraint accepts any version (wildcard * or empty).

final

raw → String

The raw constraint string exactly as declared.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

isSatisfiedBy(String version) → bool

Returns true if version satisfies this constraint.

isSatisfiedBySafe(String version) → bool?

Evaluates compatibility without throwing. Returns null if version cannot be parsed.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

override

Operators

operator ==(Object other) → bool

The equality operator.

override