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Rename down to into.

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This commit is contained in:
Rob Rix 2015-11-05 12:05:28 -05:00
parent 47a1e8eb0c
commit 9151d02655
2 changed files with 15 additions and 15 deletions
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4
prototype/Doubt/Location.swift
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@ -22,7 +22,7 @@ public struct Location<A>: SequenceType {
/// The node currently in focus.
public let it: A
public var down: Location? { return _down(it) }
public var into: Location? { return _down(it) }
public var up: Location? { return _up(it) }
@ -38,7 +38,7 @@ public struct Location<A>: SequenceType {
/// Returns the logically next `Location` after the receiver in a pre-order depth-first traversal.
public var next: Location? {
return down ?? nextAfter
return into ?? nextAfter
}
/// Returns the logically next `Location` after the receiver and its children in a pre-order depth-first traversal.

26
prototype/DoubtTests/LocationTests.swift
View File

@ -13,35 +13,35 @@ final class LocationTests: XCTestCase {
}
func testCannotMoveDownwardsFromLeaves() {
assert(leafA.explore().down?.it, ==, nil)
assert(leafA.explore().into?.it, ==, nil)
}
func testCanMoveDownwardsIntoBranches() {
assert(term.explore().down?.it, ==, leafA)
assert(term.explore().into?.it, ==, leafA)
}
func testCanMoveBackUpwards() {
assert(term.explore().down?.up?.it, ==, term)
assert(term.explore().into?.up?.it, ==, term)
}
func testCannotMoveLeftwardsFromFirstChildOfBranch() {
assert(term.explore().down?.left?.it, ==, nil)
assert(term.explore().into?.left?.it, ==, nil)
}
func testCanMoveRightwardsFromLeftmostChildOfLongBranch() {
assert(term.explore().down?.right?.it, ==, leafB)
assert(term.explore().into?.right?.it, ==, leafB)
}
func testCanExploreBranchesDeeply() {
assert(term.explore().down?.right?.right?.down?.it, ==, innerLeafB)
assert(term.explore().into?.right?.right?.into?.it, ==, innerLeafB)
}
func testCanMoveBackUpwardsFromDeepExplorations() {
assert(term.explore().down?.right?.right?.down?.right?.up?.up?.it, ==, term)
assert(term.explore().into?.right?.right?.into?.right?.up?.up?.it, ==, term)
}
func testCanReturnToStartOfExplorationFromArbitrarilyDeepNodes() {
assert(term.explore().down?.right?.right?.down?.right?.root.it, ==, term)
assert(term.explore().into?.right?.right?.into?.right?.root.it, ==, term)
}
func testSequenceIsPreOrderDepthFirstTraversal() {
@ -49,23 +49,23 @@ final class LocationTests: XCTestCase {
}
func testModifyReplacesSubtrees() {
assert(term.explore().down?.modify(const(leafB)).right?.up?.it, ==, Cofree(0, .Indexed([ leafB, leafB, keyed ])))
assert(term.explore().into?.modify(const(leafB)).right?.up?.it, ==, Cofree(0, .Indexed([ leafB, leafB, keyed ])))
}
func testMultipleModificationsReplaceMultipleSubtrees() {
assert(term.explore().down?.modify(const(leafB)).right?.modify(const(leafA)).up?.it, ==, Cofree(0, .Indexed([ leafB, leafA, keyed ])))
assert(term.explore().into?.modify(const(leafB)).right?.modify(const(leafA)).up?.it, ==, Cofree(0, .Indexed([ leafB, leafA, keyed ])))
}
func testModificationsPreserveKeys() {
assert(keyed.explore().down?.modify(const(leafA)).root.it, ==, Cofree(3, .Keyed([ "a": innerLeafA, "b": leafA ])))
assert(keyed.explore().into?.modify(const(leafA)).root.it, ==, Cofree(3, .Keyed([ "a": innerLeafA, "b": leafA ])))
}
func testDeepModificationsReplaceDeepSubtrees() {
assert(term.explore().down?.modify(const(leafB)).right?.modify(const(leafA)).right?.down?.modify(const(innerLeafA)).right?.modify(const(innerLeafB)).root.it, ==, Cofree(0, .Indexed([ leafB, leafA, Cofree(3, .Keyed([ "a": innerLeafB, "b": innerLeafA ])) ])))
assert(term.explore().into?.modify(const(leafB)).right?.modify(const(leafA)).right?.into?.modify(const(innerLeafA)).right?.modify(const(innerLeafB)).root.it, ==, Cofree(0, .Indexed([ leafB, leafA, Cofree(3, .Keyed([ "a": innerLeafB, "b": innerLeafA ])) ])))
}
func testModificationsCanRefineDiffs() {
assert(diff.explore().down?.right?.modify(const(refined)).root.it, ==, Free.Roll(0, .Indexed([ Free.Roll(1, .Leaf("a string")), refined ])))
assert(diff.explore().into?.right?.modify(const(refined)).root.it, ==, Free.Roll(0, .Indexed([ Free.Roll(1, .Leaf("a string")), refined ])))
}
}