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Commit 7f374791 by Orkhan Alikhanov
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Added relationer operators

parent 8225dd36
Showing with 146 additions and 76 deletions
Sources/iOS/Layout/Layout.swift
......@@ -198,61 +198,67 @@ public extension Layout {
/**
Constraints top of the view to its parent's.
- Parameter _ offset: A CGFloat offset.
- Parameter _ relationer: A LayoutRelationer.
- Returns: A Layout instance to allow chaining.
*/
@discardableResult
func top(_ offset: CGFloat = 0) -> Layout {
return constraint(.top, constant: offset)
func top(_ offset: CGFloat = 0, _ relationer: LayoutRelationer = LayoutRelationerStruct.equal) -> Layout {
return constraint(.top, relationer: relationer, constant: offset)
}
/**
Constraints left of the view to its parent's.
- Parameter _ offset: A CGFloat offset.
- Parameter _ relationer: A LayoutRelationer.
- Returns: A Layout instance to allow chaining.
*/
@discardableResult
func left(_ offset: CGFloat = 0) -> Layout {
return constraint(.left, constant: offset)
func left(_ offset: CGFloat = 0, _ relationer: LayoutRelationer = LayoutRelationerStruct.equal) -> Layout {
return constraint(.left, relationer: relationer, constant: offset)
}
/**
Constraints right of the view to its parent.
- Parameter _ offset: A CGFloat offset.
- Parameter _ relationer: A LayoutRelationer.
- Returns: A Layout instance to allow chaining.
*/
@discardableResult
func right(_ offset: CGFloat = 0) -> Layout {
return constraint(.right, constant: -offset)
func right(_ offset: CGFloat = 0, _ relationer: LayoutRelationer = LayoutRelationerStruct.equal) -> Layout {
return constraint(.right, relationer: relationer, constant: -offset)
}
/**
Constraints leading of the view to its parent's.
- Parameter _ offset: A CGFloat offset.
- Parameter _ relationer: A LayoutRelationer.
- Returns: A Layout instance to allow chaining.
*/
@discardableResult
func leading(_ offset: CGFloat = 0) -> Layout {
return constraint(.leading, constant: offset)
func leading(_ offset: CGFloat = 0, _ relationer: LayoutRelationer = LayoutRelationerStruct.equal) -> Layout {
return constraint(.leading, relationer: relationer, constant: offset)
}
/**
Constraints trailing of the view to its parent.
- Parameter _ offset: A CGFloat offset.
- Parameter _ relationer: A LayoutRelationer.
- Returns: A Layout instance to allow chaining.
*/
@discardableResult
func trailing(_ offset: CGFloat = 0) -> Layout {
return constraint(.trailing, constant: -offset)
func trailing(_ offset: CGFloat = 0, _ relationer: LayoutRelationer = LayoutRelationerStruct.equal) -> Layout {
return constraint(.trailing, relationer: relationer, constant: -offset)
}
/**
Constraints bottom of the view to its parent's.
- Parameter _ offset: A CGFloat offset.
- Parameter _ relationer: A LayoutRelationer.
- Returns: A Layout instance to allow chaining.
*/
@discardableResult
func bottom(_ offset: CGFloat = 0) -> Layout {
return constraint(.bottom, constant: -offset)
func bottom(_ offset: CGFloat = 0, _ relationer: LayoutRelationer = LayoutRelationerStruct.equal) -> Layout {
return constraint(.bottom, relationer: relationer, constant: -offset)
}
/**
......@@ -390,41 +396,45 @@ public extension Layout {
/**
Constraints horizontal center of the view to its parent's.
- Parameter _ offset: A CGFloat offset.
- Parameter _ relationer: A LayoutRelationer.
- Returns: A Layout instance to allow chaining.
*/
@discardableResult
func centerX(_ offset: CGFloat = 0) -> Layout {
return constraint(.centerX, constant: offset)
func centerX(_ offset: CGFloat = 0, _ relationer: LayoutRelationer = LayoutRelationerStruct.equal) -> Layout {
return constraint(.centerX, relationer: relationer, constant: offset)
}
/**
Constraints vertical center of the view to its parent's.
- Parameter _ offset: A CGFloat offset.
- Parameter _ relationer: A LayoutRelationer.
- Returns: A Layout instance to allow chaining.
*/
@discardableResult
func centerY(_ offset: CGFloat = 0) -> Layout {
return constraint(.centerY, constant: offset)
func centerY(_ offset: CGFloat = 0, _ relationer: LayoutRelationer = LayoutRelationerStruct.equal) -> Layout {
return constraint(.centerY, relationer: relationer, constant: offset)
}
/**
Constraints width of the view to its parent's.
- Parameter offset: A CGFloat offset.
- Parameter _ relationer: A LayoutRelationer.
- Returns: A Layout instance to allow chaining.
*/
@discardableResult
func width(offset: CGFloat = 0) -> Layout {
return constraint(.width, constant: offset)
func width(offset: CGFloat = 0, _ relationer: LayoutRelationer = LayoutRelationerStruct.equal) -> Layout {
return constraint(.width, relationer: relationer, constant: offset)
}
/**
Constraints height of the view to its parent's.
- Parameter offset: A CGFloat offset.
- Parameter _ relationer: A LayoutRelationer.
- Returns: A Layout instance to allow chaining.
*/
@discardableResult
func height(offset: CGFloat = 0) -> Layout {
return constraint(.height, constant: offset)
func height(offset: CGFloat = 0, _ relationer: LayoutRelationer = LayoutRelationerStruct.equal) -> Layout {
return constraint(.height, relationer: relationer, constant: offset)
}
/**
......@@ -445,61 +455,67 @@ public extension Layout {
/**
Constraints top of the view to its parent's safeArea.
- Parameter _ offset: A CGFloat offset.
- Parameter _ relationer: A LayoutRelationer.
- Returns: A Layout instance to allow chaining.
*/
@discardableResult
func topSafe(_ offset: CGFloat = 0) -> Layout {
return constraint(.top, constant: offset, useSafeArea: true)
func topSafe(_ offset: CGFloat = 0, _ relationer: LayoutRelationer = LayoutRelationerStruct.equal) -> Layout {
return constraint(.top, relationer: relationer, constant: offset, useSafeArea: true)
}
/**
Constraints left of the view to its parent's safeArea.
- Parameter _ offset: A CGFloat offset.
- Parameter _ relationer: A LayoutRelationer.
- Returns: A Layout instance to allow chaining.
*/
@discardableResult
func leftSafe(_ offset: CGFloat = 0) -> Layout {
return constraint(.left, constant: offset, useSafeArea: true)
func leftSafe(_ offset: CGFloat = 0, _ relationer: LayoutRelationer = LayoutRelationerStruct.equal) -> Layout {
return constraint(.left, relationer: relationer, constant: offset, useSafeArea: true)
}
/**
Constraints right of the view to its parent.
- Parameter _ offset: A CGFloat offset.
- Parameter _ relationer: A LayoutRelationer.
- Returns: A Layout instance to allow chaining.
*/
@discardableResult
func rightSafe(_ offset: CGFloat = 0) -> Layout {
return constraint(.right, constant: -offset, useSafeArea: true)
func rightSafe(_ offset: CGFloat = 0, _ relationer: LayoutRelationer = LayoutRelationerStruct.equal) -> Layout {
return constraint(.right, relationer: relationer, constant: -offset, useSafeArea: true)
}
/**
Constraints leading of the view to its parent's safeArea.
- Parameter _ offset: A CGFloat offset.
- Parameter _ relationer: A LayoutRelationer.
- Returns: A Layout instance to allow chaining.
*/
@discardableResult
func leadingSafe(_ offset: CGFloat = 0) -> Layout {
return constraint(.leading, constant: offset, useSafeArea: true)
func leadingSafe(_ offset: CGFloat = 0, _ relationer: LayoutRelationer = LayoutRelationerStruct.equal) -> Layout {
return constraint(.leading, relationer: relationer, constant: offset, useSafeArea: true)
}
/**
Constraints trailing of the view to its parent.
- Parameter _ offset: A CGFloat offset.
- Parameter _ relationer: A LayoutRelationer.
- Returns: A Layout instance to allow chaining.
*/
@discardableResult
func trailingSafe(_ offset: CGFloat = 0) -> Layout {
return constraint(.trailing, constant: -offset, useSafeArea: true)
func trailingSafe(_ offset: CGFloat = 0, _ relationer: LayoutRelationer = LayoutRelationerStruct.equal) -> Layout {
return constraint(.trailing, relationer: relationer, constant: -offset, useSafeArea: true)
}
/**
Constraints bottom of the view to its parent's safeArea.
- Parameter _ offset: A CGFloat offset.
- Parameter _ relationer: A LayoutRelationer.
- Returns: A Layout instance to allow chaining.
*/
@discardableResult
func bottomSafe(_ offset: CGFloat = 0) -> Layout {
return constraint(.bottom, constant: -offset, useSafeArea: true)
func bottomSafe(_ offset: CGFloat = 0, _ relationer: LayoutRelationer = LayoutRelationerStruct.equal) -> Layout {
return constraint(.bottom, relationer: relationer, constant: -offset, useSafeArea: true)
}
/**
......@@ -637,41 +653,45 @@ public extension Layout {
/**
Constraints horizontal center of the view to its parent's safeArea.
- Parameter _ offset: A CGFloat offset.
- Parameter _ relationer: A LayoutRelationer.
- Returns: A Layout instance to allow chaining.
*/
@discardableResult
func centerXSafe(_ offset: CGFloat = 0) -> Layout {
return constraint(.centerX, constant: offset, useSafeArea: true)
func centerXSafe(_ offset: CGFloat = 0, _ relationer: LayoutRelationer = LayoutRelationerStruct.equal) -> Layout {
return constraint(.centerX, relationer: relationer, constant: offset, useSafeArea: true)
}
/**
Constraints vertical center of the view to its parent's safeArea.
- Parameter _ offset: A CGFloat offset.
- Parameter _ relationer: A LayoutRelationer.
- Returns: A Layout instance to allow chaining.
*/
@discardableResult
func centerYSafe(_ offset: CGFloat = 0) -> Layout {
return constraint(.centerY, constant: offset, useSafeArea: true)
func centerYSafe(_ offset: CGFloat = 0, _ relationer: LayoutRelationer = LayoutRelationerStruct.equal) -> Layout {
return constraint(.centerY, relationer: relationer, constant: offset, useSafeArea: true)
}
/**
Constraints width of the view to its parent's safeArea.
- Parameter offset: A CGFloat offset.
- Parameter _ relationer: A LayoutRelationer.
- Returns: A Layout instance to allow chaining.
*/
@discardableResult
func widthSafe(offset: CGFloat = 0) -> Layout {
return constraint(.width, constant: offset, useSafeArea: true)
func widthSafe(offset: CGFloat = 0, _ relationer: LayoutRelationer = LayoutRelationerStruct.equal) -> Layout {
return constraint(.width, relationer: relationer, constant: offset, useSafeArea: true)
}
/**
Constraints height of the view to its parent's safeArea.
- Parameter offset: A CGFloat offset.
- Parameter _ relationer: A LayoutRelationer.
- Returns: A Layout instance to allow chaining.
*/
@discardableResult
func heightSafe(offset: CGFloat = 0) -> Layout {
return constraint(.height, constant: offset, useSafeArea: true)
func heightSafe(offset: CGFloat = 0, _ relationer: LayoutRelationer = LayoutRelationerStruct.equal) -> Layout {
return constraint(.height, relationer: relationer, constant: offset, useSafeArea: true)
}
/**
......@@ -692,21 +712,23 @@ public extension Layout {
/**
Constraints width of the view to a constant value.
- Parameter _ width: A CGFloat value.
- Parameter _ relationer: A LayoutRelationer.
- Returns: A Layout instance to allow chaining.
*/
@discardableResult
func width(_ width: CGFloat) -> Layout {
return constraint(.constantWidth, constants: width)
func width(_ width: CGFloat, _ relationer: LayoutRelationer = LayoutRelationerStruct.equal) -> Layout {
return constraint(.constantWidth, relationer: relationer, constants: width)
}
/**
Constraints height of the view to a constant value.
- Parameter _ height: A CGFloat value.
- Parameter _ relationer: A LayoutRelationer.
- Returns: A Layout instance to allow chaining.
*/
@discardableResult
func height(_ height: CGFloat) -> Layout {
return constraint(.constantHeight, constants: height)
func height(_ height: CGFloat, _ relationer: LayoutRelationer = LayoutRelationerStruct.equal) -> Layout {
return constraint(.constantHeight, relationer: relationer, constants: height)
}
/**
......@@ -725,66 +747,72 @@ public extension Layout {
Constraints top of the view to the given anchor.
- Parameter _ anchor: A LayoutAnchorable.
- Parameter _ offset: A CGFloat offset.
- Parameter _ relationer: A LayoutRelationer.
- Returns: A Layout instance to allow chaining.
*/
@discardableResult
func top(_ anchor: LayoutAnchorable, _ offset: CGFloat = 0) -> Layout {
return constraint(.top, to: anchor, constant: offset)
func top(_ anchor: LayoutAnchorable, _ offset: CGFloat = 0, _ relationer: LayoutRelationer = LayoutRelationerStruct.equal) -> Layout {
return constraint(.top, to: anchor, relationer: relationer, constant: offset)
}
/**
Constraints left of the view to the given anchor.
- Parameter _ anchor: A LayoutAnchorable.
- Parameter _ offset: A CGFloat offset.
- Parameter _ relationer: A LayoutRelationer.
- Returns: A Layout instance to allow chaining.
*/
@discardableResult
func left(_ anchor: LayoutAnchorable, _ offset: CGFloat = 0) -> Layout {
return constraint(.left, to: anchor, constant: offset)
func left(_ anchor: LayoutAnchorable, _ offset: CGFloat = 0, _ relationer: LayoutRelationer = LayoutRelationerStruct.equal) -> Layout {
return constraint(.left, to: anchor, relationer: relationer, constant: offset)
}
/**
Constraints right of the view to the given anchor.
- Parameter _ anchor: A LayoutAnchorable.
- Parameter _ offset: A CGFloat offset.
- Parameter _ relationer: A LayoutRelationer.
- Returns: A Layout instance to allow chaining.
*/
@discardableResult
func right(_ anchor: LayoutAnchorable, _ offset: CGFloat = 0) -> Layout {
return constraint(.right, to: anchor, constant: -offset)
func right(_ anchor: LayoutAnchorable, _ offset: CGFloat = 0, _ relationer: LayoutRelationer = LayoutRelationerStruct.equal) -> Layout {
return constraint(.right, to: anchor, relationer: relationer, constant: -offset)
}
/**
Constraints leading of the view to the given anchor.
- Parameter _ anchor: A LayoutAnchorable.
- Parameter _ offset: A CGFloat offset.
- Parameter _ relationer: A LayoutRelationer.
- Returns: A Layout instance to allow chaining.
*/
@discardableResult
func leading(_ anchor: LayoutAnchorable, _ offset: CGFloat = 0) -> Layout {
return constraint(.leading, to: anchor, constant: offset)
func leading(_ anchor: LayoutAnchorable, _ offset: CGFloat = 0, _ relationer: LayoutRelationer = LayoutRelationerStruct.equal) -> Layout {
return constraint(.leading, to: anchor, relationer: relationer, constant: offset)
}
/**
Constraints trailing of the view to the given anchor.
- Parameter _ anchor: A LayoutAnchorable.
- Parameter _ offset: A CGFloat offset.
- Parameter _ relationer: A LayoutRelationer.
- Returns: A Layout instance to allow chaining.
*/
@discardableResult
func trailing(_ anchor: LayoutAnchorable, _ offset: CGFloat = 0) -> Layout {
return constraint(.trailing, to: anchor, constant: -offset)
func trailing(_ anchor: LayoutAnchorable, _ offset: CGFloat = 0, _ relationer: LayoutRelationer = LayoutRelationerStruct.equal) -> Layout {
return constraint(.trailing, to: anchor, relationer: relationer, constant: -offset)
}
/**
Constraints bottom of the view to the given anchor.
- Parameter _ anchor: A LayoutAnchorable.
- Parameter _ offset: A CGFloat offset.
- Parameter _ relationer: A LayoutRelationer.
- Returns: A Layout instance to allow chaining.
*/
@discardableResult
func bottom(_ anchor: LayoutAnchorable, _ offset: CGFloat = 0) -> Layout {
return constraint(.bottom, to: anchor, constant: -offset)
func bottom(_ anchor: LayoutAnchorable, _ offset: CGFloat = 0, _ relationer: LayoutRelationer = LayoutRelationerStruct.equal) -> Layout {
return constraint(.bottom, to: anchor, relationer: relationer, constant: -offset)
}
/**
......@@ -935,44 +963,48 @@ public extension Layout {
Constraints horizontal center of the view to the given anchor.
- Parameter _ anchor: A LayoutAnchorable.
- Parameter _ offset: A CGFloat offset.
- Parameter _ relationer: A LayoutRelationer.
- Returns: A Layout instance to allow chaining.
*/
@discardableResult
func centerX(_ anchor: LayoutAnchorable, _ offset: CGFloat = 0) -> Layout {
return constraint(.centerX, to: anchor, constant: offset)
func centerX(_ anchor: LayoutAnchorable, _ offset: CGFloat = 0, _ relationer: LayoutRelationer = LayoutRelationerStruct.equal) -> Layout {
return constraint(.centerX, to: anchor, relationer: relationer, constant: offset)
}
/**
Constraints vertical center of the view to the given anchor.
- Parameter _ anchor: A LayoutAnchorable.
- Parameter _ offset: A CGFloat offset.
- Parameter _ relationer: A LayoutRelationer.
- Returns: A Layout instance to allow chaining.
*/
@discardableResult
func centerY(_ anchor: LayoutAnchorable, _ offset: CGFloat = 0) -> Layout {
return constraint(.centerY, to: anchor, constant: offset)
func centerY(_ anchor: LayoutAnchorable, _ offset: CGFloat = 0, _ relationer: LayoutRelationer = LayoutRelationerStruct.equal) -> Layout {
return constraint(.centerY, to: anchor, relationer: relationer, constant: offset)
}
/**
Constraints width of the view to the given anchor.
- Parameter _ anchor: A LayoutAnchorable.
- Parameter offset: A CGFloat offset.
- Parameter _ offset: A CGFloat offset.
- Parameter _ relationer: A LayoutRelationer.
- Returns: A Layout instance to allow chaining.
*/
@discardableResult
func width(_ anchor: LayoutAnchorable, _ offset: CGFloat = 0) -> Layout {
return constraint(.width, to: anchor, constant: offset)
func width(_ anchor: LayoutAnchorable, _ offset: CGFloat = 0, _ relationer: LayoutRelationer = LayoutRelationerStruct.equal) -> Layout {
return constraint(.width, to: anchor, relationer: relationer, constant: offset)
}
/**
Constraints height of the view to the given anchor.
- Parameter _ anchor: A LayoutAnchorable.
- Parameter offset: A CGFloat offset.
- Parameter _ offset: A CGFloat offset.
- Parameter _ relationer: A LayoutRelationer.
- Returns: A Layout instance to allow chaining.
*/
@discardableResult
func height(_ anchor: LayoutAnchorable, _ offset: CGFloat = 0) -> Layout {
return constraint(.height, to: anchor, constant: offset)
func height(_ anchor: LayoutAnchorable, _ offset: CGFloat = 0, _ relationer: LayoutRelationer = LayoutRelationerStruct.equal) -> Layout {
return constraint(.height, to: anchor, relationer: relationer, constant: offset)
}
/**
......@@ -1051,21 +1083,23 @@ private extension Layout {
Constraints the view to its parent according to the provided attribute.
If the constraint already exists, will update its constant.
- Parameter _ attribute: A LayoutAttribute.
- Parameter _ relationer: A LayoutRelationer.
- Parameter constant: A CGFloat.
- Returns: A Layout instance to allow chaining.
*/
func constraint(_ attribute: LayoutAttribute, constant: CGFloat, useSafeArea: Bool = false) -> Layout {
return constraint([attribute], constants: constant, useSafeArea: useSafeArea)
func constraint(_ attribute: LayoutAttribute, relationer: LayoutRelationer = LayoutRelationerStruct.equal, constant: CGFloat, useSafeArea: Bool = false) -> Layout {
return constraint([attribute], relationer: relationer, constants: constant, useSafeArea: useSafeArea)
}
/**
Constraints the view to its parent according to the provided attributes.
If any of the constraints already exists, will update its constant.
- Parameter _ attributes: An array of LayoutAttribute.
- Parameter _ relationer: A LayoutRelationer.
- Parameter constants: A list of CGFloat.
- Returns: A Layout instance to allow chaining.
*/
func constraint(_ attributes: [LayoutAttribute], constants: CGFloat..., useSafeArea: Bool = false) -> Layout {
func constraint(_ attributes: [LayoutAttribute], relationer: LayoutRelationer = LayoutRelationerStruct.equal, constants: CGFloat..., useSafeArea: Bool = false) -> Layout {
var attributes = attributes
var anchor: LayoutAnchor!
......@@ -1080,7 +1114,7 @@ private extension Layout {
anchor = LayoutAnchor(constraintable: useSafeArea ? parent?.safeAnchor.constraintable : parent, attributes: attributes)
}
return constraint(attributes, to: anchor, constants: constants)
return constraint(attributes, to: anchor, relationer: relationer, constants: constants)
}
/**
......@@ -1088,11 +1122,12 @@ private extension Layout {
If the constraint already exists, will update its constant.
- Parameter _ attribute: A LayoutAttribute.
- Parameter to anchor: A LayoutAnchorable.
- Parameter relation: A LayoutRelation between anchors.
- Parameter constant: A CGFloat.
- Returns: A Layout instance to allow chaining.
*/
func constraint(_ attribute: LayoutAttribute, to anchor: LayoutAnchorable, constant: CGFloat) -> Layout {
return constraint([attribute], to: anchor, constants: constant)
func constraint(_ attribute: LayoutAttribute, to anchor: LayoutAnchorable, relationer: LayoutRelationer = LayoutRelationerStruct.equal, constant: CGFloat) -> Layout {
return constraint([attribute], to: anchor, relationer: relationer, constants: constant)
}
/**
......@@ -1100,11 +1135,12 @@ private extension Layout {
If any of the constraints already exists, will update its constant.
- Parameter _ attributes: An array of LayoutAttribute.
- Parameter to anchor: A LayoutAnchorable.
- Parameter relation: A LayoutRelation between anchors.
- Parameter constants: A list of CGFloat.
- Returns: A Layout instance to allow chaining.
*/
func constraint(_ attributes: [LayoutAttribute], to anchor: LayoutAnchorable, constants: CGFloat...) -> Layout {
return constraint(attributes, to: anchor, constants: constants)
func constraint(_ attributes: [LayoutAttribute], to anchor: LayoutAnchorable, relationer: LayoutRelationer = LayoutRelationerStruct.equal, constants: CGFloat...) -> Layout {
return constraint(attributes, to: anchor, relationer: relationer, constants: constants)
}
/**
......@@ -1112,17 +1148,18 @@ private extension Layout {
If any of the constraints already exists, will update its constant.
- Parameter _ attributes: An array of LayoutAttribute.
- Parameter to anchor: A LayoutAnchorable.
- Parameter relation: A LayoutRelation between anchors.
- Parameter constants: An array of CGFloat.
- Returns: A Layout instance to allow chaining.
*/
func constraint(_ attributes: [LayoutAttribute], to anchor: LayoutAnchorable, constants: [CGFloat]) -> Layout {
func constraint(_ attributes: [LayoutAttribute], to anchor: LayoutAnchorable, relationer: LayoutRelationer, constants: [CGFloat]) -> Layout {
let from = LayoutAnchor(constraintable: constraintable, attributes: attributes)
var to = anchor as? LayoutAnchor
if to?.attributes.isEmpty ?? true {
let v = (anchor as? UIView) ?? (anchor as? LayoutAnchor)?.constraintable
to = LayoutAnchor(constraintable: v, attributes: attributes)
}
let constraint = LayoutConstraint(fromAnchor: from, toAnchor: to!, relation: .equal, constants: constants)
let constraint = LayoutConstraint(fromAnchor: from, toAnchor: to!, relation: relationer(.nil, .nil), constants: constants)
let constraints = (view?.constraints ?? []) + (view?.superview?.constraints ?? [])
......@@ -1140,3 +1177,36 @@ private extension Layout {
return self
}
}
/// A closure typealias for relation operators.
public typealias LayoutRelationer = (LayoutRelationerStruct, LayoutRelationerStruct) -> LayoutRelation
/// A dummy struct used in creating relation operators (==, >=, <=).
public struct LayoutRelationerStruct {
/// Passed as an unused argument to the LayoutRelationer closures.
static let `nil` = LayoutRelationerStruct()
/**
A method used as a default parameter for LayoutRelationer closures.
Swift does not allow using == operator directly, so we had to create this.
*/
public static func equal(left: LayoutRelationerStruct, right: LayoutRelationerStruct) -> LayoutRelation {
return .equal
}
}
/// A method returning `LayoutRelation.equal`
public func ==(left: LayoutRelationerStruct, right: LayoutRelationerStruct) -> LayoutRelation {
return .equal
}
/// A method returning `LayoutRelation.greaterThanOrEqual`
public func >=(left: LayoutRelationerStruct, right: LayoutRelationerStruct) -> LayoutRelation {
return .greaterThanOrEqual
}
/// A method returning `LayoutRelation.lessThanOrEqual`
public func <=(left: LayoutRelationerStruct, right: LayoutRelationerStruct) -> LayoutRelation {
return .lessThanOrEqual
}
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