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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
//
//===----------------------------------------------------------------------===//
import SwiftSyntax
import XCTest
final class ExpressionTypeTests: ParserTestCase {
func testTypeExpression() {
assertParse("_ = (any Sequence<Int>).self")
}
/// Test that `canParseType()` succeeds for these generic arguments.
// FIXME: This is suboptimal. Instead, we should verify that 'canParseType()'
// succeeds for all types in a valid parse.
func testCanParseType() {
let cases: [UInt: String] = [
// Identifiers and member types
#line: "1️⃣X",
#line: "Y<1️⃣X>",
#line: "1️⃣X.Y<T>",
#line: "Y<1️⃣X>.Z<W>",
#line: "1️⃣X.Y<T>.Z",
#line: "V<W>.Y.Z<1️⃣X>",
#line: "1️⃣X?.Y",
#line: "1️⃣X!.Y",
#line: "[1️⃣X].Y",
#line: "[1️⃣X : Y].Z",
#line: "().Y<1️⃣X>",
#line: "(1️⃣X).Y",
#line: "(1️⃣X, Y).Z",
#line: "Any.Y<1️⃣X>",
#line: "Self.Y<1️⃣X>",
// Metatypes
#line: "1️⃣X.Type",
#line: "1️⃣X.Protocol",
// Sugared optionals
#line: "1️⃣X?",
#line: "1️⃣X!",
// Sugared collections
#line: "[1️⃣X]",
#line: "[1️⃣X : Y]",
// Tuples
#line: "(1️⃣X)",
#line: "(1️⃣X, X)",
// Protocol compositions
#line: "1️⃣X & Y",
#line: "Any & 1️⃣X",
#line: "Self & 1️⃣X",
#line: "any 1️⃣X & Y",
#line: "any 1️⃣X?.Y & (Y, Z)",
// Functions
// FIXME: 'canParseType' cannot handle these.
//#line: "@convention(witness_method: Y) (1️⃣X) -> ()",
//#line: #"@convention(c, cType: "intptr_t (*)(size_t)") (1️⃣X) -> Y"#,
#line: "(1️⃣X) -> Y",
#line: "(1️⃣X, Y) -> P & Q",
]
for (line, type) in cases {
assertParse(
"G<\(type)>.self",
{ ExprSyntax.parse(from: &$0) },
substructure: IdentifierTypeSyntax(name: .identifier("X")),
substructureAfterMarker: "1️⃣",
line: line
)
}
// Void
assertParse(
"G<1️⃣()>.self",
{ ExprSyntax.parse(from: &$0) },
substructure: TupleTypeSyntax(elements: .init([])),
substructureAfterMarker: "1️⃣"
)
// Any
assertParse(
"G<1️⃣Any>.self",
{ ExprSyntax.parse(from: &$0) },
substructure: IdentifierTypeSyntax(name: .keyword(.Any)),
substructureAfterMarker: "1️⃣"
)
// Self
assertParse(
"G<1️⃣Self>.self",
{ ExprSyntax.parse(from: &$0) },
substructure: IdentifierTypeSyntax(name: .keyword(.Self)),
substructureAfterMarker: "1️⃣"
)
}
}
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