array_did_set.swift

// RUN: %empty-directory(%t)
// RUN: cp %s %t/main.swift
// RUN: %target-build-swift -whole-module-optimization -module-name PlaygroundSupport -emit-module-path %t/PlaygroundSupport.swiftmodule -parse-as-library -c -o %t/PlaygroundSupport.o %S/Inputs/SilentPCMacroRuntime.swift %S/Inputs/PlaygroundsRuntime.swift
// RUN: %target-build-swift -Xfrontend -playground -o %t/main -I=%t %t/PlaygroundSupport.o %t/main.swift
// RUN: %target-codesign %t/main
// RUN: %target-run %t/main | %FileCheck %s
// RUN: %target-build-swift -Xfrontend -pc-macro -Xfrontend -playground -o %t/main2 -I=%t %t/PlaygroundSupport.o %t/main.swift 
// RUN: %target-codesign %t/main2
// RUN: %target-run %t/main2 | %FileCheck %s
// REQUIRES: executable_test

import PlaygroundSupport

struct S {
    var a : [Int] = [] {
        didSet {
            print("Set")
        }
    }
}

var s = S()
s.a = [3,2]
s.a.append(300)

// CHECK: [{{.*}}] __builtin_log[s='S(a: [])']
// CHECK-NEXT: [{{.*}}] __builtin_log_scope_entry
// CHECK-NEXT: Set
// CHECK-NEXT: [{{.*}}] __builtin_postPrint
// CHECK-NEXT: [{{.*}}] __builtin_log_scope_exit
// CHECK-NEXT: [{{.*}}] __builtin_log[s='S(a: [3, 2])']
// CHECK-NEXT: [{{.*}}] __builtin_log_scope_entry
// CHECK-NEXT: Set
// CHECK-NEXT: [{{.*}}] __builtin_postPrint
// CHECK-NEXT: [{{.*}}] __builtin_log_scope_exit
// CHECK-NEXT: [{{.*}}] __builtin_log[a='[3, 2, 300]']