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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/generic_disambiguation.swift
import SwiftSyntax
import XCTest
final class GenericDisambiguationTests: ParserTestCase {
func testGenericDisambiguation1() {
assertParse(
"""
struct A<B> {
init(x:Int) {}
static func c() {}
struct C<D> {
static func e() {}
}
struct F {}
}
struct B {}
struct D {}
"""
)
}
func testGenericDisambiguation2() {
assertParse(
"""
protocol Runcible {}
protocol Fungible {}
"""
)
}
func testGenericDisambiguation3() {
assertParse(
"""
func meta<T>(_ m: T.Type) {}
func meta2<T>(_ m: T.Type, _ x: Int) {}
"""
)
}
func testGenericDisambiguation4() {
assertParse(
"""
func generic<T>(_ x: T) {}
"""
)
}
func testGenericDisambiguation5() {
assertParse(
"""
var a, b, c, d : Int
"""
)
}
func testGenericDisambiguation6a() {
assertParse(
"""
_ = a < b
"""
)
}
func testGenericDisambiguation6b() {
assertParse(
"""
_ = (a < b, c > d)
"""
)
}
func testGenericDisambiguation6c() {
// Parses as generic because of lparen after '>'
assertParse(
"""
(a < b, c > (d))
""",
substructure: GenericArgumentListSyntax([
GenericArgumentSyntax(
argument: IdentifierTypeSyntax(name: .identifier("b")),
trailingComma: .commaToken()
),
GenericArgumentSyntax(
argument: IdentifierTypeSyntax(name: .identifier("c"))
),
])
)
}
func testGenericDisambiguation6d() {
// Parses as generic because of lparen after '>'
assertParse(
"""
(a<b, c>(d))
""",
substructure: GenericArgumentListSyntax([
GenericArgumentSyntax(
argument: IdentifierTypeSyntax(name: .identifier("b")),
trailingComma: .commaToken()
),
GenericArgumentSyntax(
argument: IdentifierTypeSyntax(name: .identifier("c"))
),
])
)
}
func testGenericDisambiguation6e() {
assertParse(
"""
_ = a>(b)
"""
)
}
func testGenericDisambiguation6f() {
assertParse(
"""
_ = a > (b)
"""
)
}
func testGenericDisambiguation7() {
assertParse(
"""
generic<Int>(0)
"""
)
}
func testGenericDisambiguation8() {
assertParse(
"""
A<B>.c()
A<A<B>>.c()
A<A<B>.F>.c()
A<(A<B>) -> B>.c()
A<[[Int]]>.c()
A<[[A<B>]]>.c()
A<(Int, UnicodeScalar)>.c()
A<(a:Int, b:UnicodeScalar)>.c()
A<Runcible & Fungible>.c()
A<@convention(c) () -> Int32>.c()
A<(@autoclosure @escaping () -> Int, Int) -> Void>.c()
_ = [@convention(block) () -> Int]().count
_ = [String: (@escaping (A<B>) -> Int) -> Void]().keys
"""
)
}
func testGenericDisambiguation9() {
assertParse(
"""
A<B>(x: 0)
"""
)
}
func testGenericDisambiguation10() {
assertParse(
"""
meta(A<B>.self)
"""
)
}
func testGenericDisambiguation11() {
assertParse(
"""
meta2(A<B>.self, 0)
"""
)
}
func testGenericDisambiguation12() {
assertParse(
"""
A<B>.C<D>.e()
"""
)
}
func testGenericDisambiguation13() {
assertParse(
"""
A<B>.C<D>(0)
"""
)
}
func testGenericDisambiguation14() {
assertParse(
"""
meta(A<B>.C<D>.self)
meta2(A<B>.C<D>.self, 0)
"""
)
}
func testGenericDisambiguation15() {
assertParse(
"""
A<>.c()
""",
substructure: PostfixOperatorExprSyntax(
expression: ExprSyntax(DeclReferenceExprSyntax(baseName: .identifier("A"))),
operator: .postfixOperator("<>")
)
)
}
func testGenericDisambiguation16() {
assertParse(
"""
A<B, D>.c()
"""
)
}
func testGenericDisambiguation17() {
assertParse(
"""
A<B?>(x: 0) // parses as type
_ = a < b ? c : d
"""
)
}
func testGenericDisambiguation18() {
assertParse(
"""
A<(B) throws -> D>(x: 0)
"""
)
}
}
|
