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|
//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2023 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
// This test file has been translated from swift/test/Parse/copy_expr.swift
import XCTest
final class CopyExprTests: ParserTestCase {
func testGlobal() {
assertParse(
"""
var global: Int = 5
func testGlobal() {
let _ = copy global
}
"""
)
}
func testLet() {
assertParse(
"""
func testLet() {
let t = String()
let _ = copy t
}
"""
)
}
func testVar() {
assertParse(
"""
func testVar() {
var t = String()
t = String()
let _ = copy t
}
"""
)
}
func testStillAbleToCallFunctionCalledCopy() {
assertParse(
"""
func copy() {}
func copy(_: String) {}
func copy(_: String, _: Int) {}
func copy(x: String, y: Int) {}
func useCopyFunc() {
var s = String()
var i = global
copy()
copy(s)
copy(i) // expected-error{{cannot convert value of type 'Int' to expected argument type 'String'}}
copy(s, i)
copy(i, s) // expected-error{{unnamed argument #2 must precede unnamed argument #1}}
copy(x: s, y: i)
copy(y: i, x: s) // expected-error{{argument 'x' must precede argument 'y'}}
}
"""
)
}
// Ensure we can still parse a variable named copy.
func testUseCopyVariable() {
assertParse(
"""
func useCopyVar(copy: inout String) {
let s = copy
copy = s
// We can copy from a variable named `copy`
let t = copy copy
copy = t
// We can do member access and subscript a variable named `copy`
let i = copy.startIndex
let _ = copy[i]
}
"""
)
}
func testPropertyWrapperWithCopy() {
assertParse(
"""
@propertyWrapper
struct FooWrapper<T> {
var value: T
init(wrappedValue: T) { value = wrappedValue }
var wrappedValue: T {
get { value }
nonmutating set {}
}
var projectedValue: T {
get { value }
nonmutating set {}
}
}
struct Foo {
@FooWrapper var wrapperTest: String
func copySelf() {
_ = copy self
}
func copyPropertyWrapper() {
// should still parse, even if it doesn't semantically work out
_ = copy wrapperTest // expected-error{{can only be applied to lvalues}}
_ = copy _wrapperTest // expected-error{{can only be applied to lvalues}}
_ = copy $wrapperTest // expected-error{{can only be applied to lvalues}}
}
}
"""
)
}
func testAsCaseStmt() {
assertParse(
"""
class ParentKlass {}
class SubKlass : ParentKlass {}
func test(_ s: SubKlass) {
switch s {
case let copy as ParentKlass:
fallthrough
}
}
"""
)
}
func testParseCanCopyClosureDollarIdentifier() {
assertParse(
"""
class Klass {}
let f: (Klass) -> () = {
let _ = copy $0
}
"""
)
}
func testForLoop() {
assertParse(
"""
func test() {
for copy in 1..<1024 {
}
}
"""
)
}
func testCopySelf() {
assertParse(
"""
class Klass {
func test() {
let _ = copy self
}
}
"""
)
}
}
|
