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// RUN: %target-typecheck-verify-swift
@_functionBuilder // expected-warning{{'@_functionBuilder' has been renamed to '@resultBuilder'}}{{2-18=resultBuilder}}
struct MyBuilder {
static func buildBlock(_: Any...) -> Any { }
}
// rdar://104384604 - empty result builder in swiftinterface file
@resultBuilder
public struct TestInvalidBuildBlock1 {
// expected-error@-1 {{result builder must provide at least one static 'buildBlock' as accessible as result builder type 'TestInvalidBuildBlock1' (which is public)}}
static func buildBlock(_: Int) -> Int { 42 }
}
@resultBuilder
public struct TestInvalidBuildBlock2 { // Ok
static func buildBlock(_: Int) -> Int { 42 }
public static func buildBlock(_: String) -> String { "" }
}
@resultBuilder
public struct TestInvalidBuildPartialBlockFirst1 {
// expected-error@-1 {{result builder must provide at least one static 'buildPartialBlock(first:)' as accessible as result builder type 'TestInvalidBuildPartialBlockFirst1' (which is public)}}
static func buildPartialBlock(first: Int) -> Int { first }
public static func buildPartialBlock(accumulated: Int, next: Int) -> Int { accumulated + next }
}
@resultBuilder
public struct TestInvalidBuildPartialBlockFirst2 { // Ok
static func buildPartialBlock(first: Int) -> Int { first }
public static func buildPartialBlock<T>(first: T) -> T { first }
public static func buildPartialBlock(accumulated: Int, next: Int) -> Int { accumulated + next }
}
@resultBuilder
public struct TestInvalidBuildPartialBlockAccumulated1 {
// expected-error@-1 {{result builder must provide at least one static 'buildPartialBlock(accumulated:next:)' as accessible as result builder type 'TestInvalidBuildPartialBlockAccumulated1' (which is public)}}
public static func buildPartialBlock(first: Int) -> Int { first }
private static func buildPartialBlock(accumulated: Int, next: Int) -> Int { accumulated + next }
}
@resultBuilder
public struct TestInvalidBuildPartialBlockAccumulated2 { // Ok
public static func buildPartialBlock<T>(first: T) -> T { first }
public static func buildPartialBlock<T>(accumulated: T, next: T) -> T { fatalError() }
private static func buildPartialBlock(accumulated: Int, next: Int) -> Int { accumulated + next }
}
@resultBuilder
public struct TestBuildPartialBlock1 { // Ok
public static func buildPartialBlock(first: Int) -> Int { first }
public static func buildPartialBlock(accumulated: Int, next: Int) -> Int { accumulated + next }
}
@resultBuilder
public struct TestBuildPartialBlock2 { // Ok
private static func buildBlock(_: Int) -> Int { 42 }
public static func buildPartialBlock(first: Int) -> Int { first }
public static func buildPartialBlock(accumulated: Int, next: Int) -> Int { accumulated + next }
}
@resultBuilder
public struct TestBuildPartialBlock3 { // Ok
public static func buildBlock(_: Int) -> Int { 42 }
fileprivate static func buildPartialBlock(first: Int) -> Int { first }
fileprivate static func buildPartialBlock(accumulated: Int, next: Int) -> Int { accumulated + next }
}
@resultBuilder
public struct TestBuildPartialBlock4 { // Ok
public static func buildBlock(_: Int) -> Int { 42 }
public static func buildPartialBlock(first: Int) -> Int { first }
public static func buildPartialBlock(accumulated: Int, next: Int) -> Int { accumulated + next }
}
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