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6d514c17cf
constraint-based type checker, include the body of the explicit
closure within the set of constraints. This allows type information to
flow from the body expression, so that we can type-check, e.g.,
map(new Int[N], { $0.toString() })
to a String[] without context information. Fixes <rdar://problem/11229738>.
Swift SVN r2794
35 lines
1.1 KiB
Swift
35 lines
1.1 KiB
Swift
// RUN: %swift -repl < %s 2>&1 | FileCheck %s
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func myMap<T1, T2>(array : T1[], fn : (T1) -> T2) -> T2[] {}
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var intArray : Int[]
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func toString<T>(x : T) -> String { }
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// CHECK: Constraints:
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// CHECK: (x : $T4) -> String == $T5 -> $T6
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// CHECK: [byref(heap)] $T2 << $T5
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// CHECK: $T6 << $T3
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// CHECK: (array : $T0[], fn : $T0 -> $T1) -> $T1[] == $T7 -> $T8
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// CHECK: ([byref(heap)] Int[], ($T2) -> $T3) << $T7
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// CHECK: ---Child system #1---
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// CHECK: Assumptions:
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// CHECK: assuming $T3 == String
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// CHECK: assuming $T2 == Int64
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// CHECK: assuming $T4 == Int64
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// CHECK: assuming $T1 == String
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// CHECK: Type Variables:
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// CHECK: $T0 as Int64
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// CHECK: $T1 as String
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// CHECK: $T2 as Int64
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// CHECK: $T3 as String
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// CHECK: $T4 as Int64
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// CHECK: $T5 as (x : $T4)
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// CHECK: $T6 as String
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// CHECK: $T7 as (array : Slice<$T0>, fn : $T0 -> $T1)
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// CHECK: $T8 as Slice<$T1>
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// CHECK: SOLVED (completely)
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// CHECK: Unique solution found.
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// FIXME: Would like to use String() constructor here.
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:dump_constraints myMap(intArray, { toString($0) })
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