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67ca1c9ea1
There's a bit of a reshuffle of the ExplicitCastExpr subclasses: - The existing ConditionalCheckedCastExpr expression node now represents "as?". - A new ForcedCheckedCastExpr node represents "as" when it is a downcast. - CoerceExpr represents "as" when it is a coercion. - A new UnresolvedCheckedCastExpr node describes "as" before it has been type-checked down to ForcedCheckedCastExpr or CoerceExpr. This wasn't a strictly necessary change, but it helps us detangle what's going on. There are a few new diagnostics to help users avoid getting bitten by as/as? mistakes: - Custom errors when a forced downcast (as) is used as the operand of postfix '!' or '?', with Fix-Its to remove the '!' or make the downcast conditional (with as?), respectively. - A warning when a forced downcast is injected into an optional, with a suggestion to use a conditional downcast. - A new error when the postfix '!' is used for a contextual downcast, with a Fix-It to replace it with "as T" with the contextual type T. Lots of test updates, none of which felt like regressions. The new tests are in test/expr/cast/optionals.swift. Addresses <rdar://problem/17000058> Swift SVN r18556
95 lines
1.8 KiB
Swift
95 lines
1.8 KiB
Swift
// RUN: %target-run-simple-swift | FileCheck %s
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import Foundation
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var a: NSArray = ["one", 2, [1,2,3]]
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var a_m: NSMutableArray = ["two", 12, [11,12,13]]
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// CHECK: one
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// CHECK: 2
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// CHECK: (
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// CHECK: 1,
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// CHECK: 2,
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// CHECK: 3
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// CHECK: )
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for x: AnyObject in a {
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println(x.description!)
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}
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// CHECK: two
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// CHECK: 12
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// CHECK: (
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// CHECK: 11,
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// CHECK: 12,
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// CHECK: 13
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// CHECK: )
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for x: AnyObject in a_m {
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println(x.description!)
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}
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class Canary {
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var x: Int
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deinit { println("dead \(x)") }
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init(_ x: Int) { self.x = x }
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func chirp() { println("\(x)") }
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}
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autoreleasepool {
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println("making array")
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var b: NSArray = NSArray(objects: [Canary(1), Canary(2), Canary(3)], count: 3)
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println("iterating array")
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// CHECK: 1
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for x: AnyObject in b {
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(x as Canary).chirp()
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break
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}
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// CHECK: exiting
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println("exiting")
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}
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// CHECK: dead
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// CHECK: dead
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// CHECK: dead
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// CHECK: exited
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println("exited")
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var d : NSDictionary = [415 : "Giants", 510 : "A's"]
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var d_m : NSMutableDictionary = [1415 : "Big Giants", 11510 : "B's"]
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// CHECK: 510 => A's
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for (key, value) in d {
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println("\(key.description!) => \(value.description!)")
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}
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// CHECK: 11510 => B's
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for (key, value) in d_m {
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println("\(key.description!) => \(value.description!)")
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}
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var s = NSSet(object: "the most forward-thinking test yet")
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var s_m = NSMutableSet(object: "the next most forward-thinking test yet")
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// CHECK: the most forward-thinking test yet
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for x: AnyObject in s {
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println(x.description!)
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}
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// CHECK: the next most forward-thinking test yet
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for x: AnyObject in s_m {
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println(x.description!)
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}
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// Enumeration over an _NSSwiftArray
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// CHECK: hello
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// CHECK: bridged
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// CHECK: array
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var a2 = ["hello", "bridged", "array"]
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var nsa2 = (a2._asCocoaArray() as AnyObject) as NSArray
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for x: AnyObject in nsa2 {
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println(x.description!)
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}
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