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result_builder.swift
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struct Tagged<Tag, Entity> {
let tag: Tag
let entity: Entity
}
protocol Taggable {
}
extension Taggable {
func tag<Tag>(_ tag: Tag) -> Tagged<Tag, Self> {
return Tagged(tag: tag, entity: self)
}
}
extension Int: Taggable { }
extension String: Taggable { }
@resultBuilder
struct TaggedBuilder<Tag> {
static func buildBlock() -> () { }
static func buildBlock<T1>(_ t1: Tagged<Tag, T1>) -> Tagged<Tag, T1> {
return t1
}
static func buildBlock<T1, T2>(_ t1: Tagged<Tag, T1>, _ t2: Tagged<Tag, T2>) -> (Tagged<Tag, T1>, Tagged<Tag, T2>) {
return (t1, t2)
}
}
enum Color {
case red, green, blue
}
func acceptColorTagged<Result>(@TaggedBuilder<Color> body: (Color) -> Result) {
print(body(.blue))
}
func testAcceptColorTagged(i: Int, s: String) {
acceptColorTagged { color in
i.tag(color)
s.tag(Color.green)
}
}
// Custom attribute name.
// RUN: %sourcekitd-test -req=cursor -pos=35:33 %s -- %s -module-name BuilderTest | %FileCheck %s --check-prefix=ATTR_NAME
// ATTR_NAME: source.lang.swift.ref.struct (19:8-19:21)
// ATTR_NAME-NEXT: TaggedBuilder
// ATTR_NAME-NEXT: s:11BuilderTest06TaggedA0V
// ATTR_NAME-NEXT: source.lang.swift
// ATTR_NAME-NEXT: TaggedBuilder<Tag>.Type
// ATTR_NAME-NEXT: $s11BuilderTest06TaggedA0VyxGmD
// ATTR_NAME-NEXT: BuilderTest{{$}}
// ATTR_NAME-NEXT: <Declaration>@resultBuilder struct TaggedBuilder<Tag></Declaration>
// ATTR_NAME-NEXT: <decl.struct><syntaxtype.attribute.builtin><syntaxtype.attribute.name>@resultBuilder</syntaxtype.attribute.name></syntaxtype.attribute.builtin> <syntaxtype.keyword>struct</syntaxtype.keyword> <decl.name>TaggedBuilder</decl.name><<decl.generic_type_param usr="s:11BuilderTest06TaggedA0V3Tagxmfp"><decl.generic_type_param.name>Tag</decl.generic_type_param.name></decl.generic_type_param>></decl.struct>
// Generic argument in attribute name.
// RUN: %sourcekitd-test -req=cursor -pos=35:47 %s -- %s -module-name BuilderTest | %FileCheck %s --check-prefix=ATTR_GENERICARG
// ATTR_GENERICARG: source.lang.swift.ref.enum (31:6-31:11)
// ATTR_GENERICARG-NEXT: Color
// ATTR_GENERICARG-NEXT: s:11BuilderTest5ColorO
// ATTR_GENERICARG-NEXT: source.lang.swift
// ATTR_GENERICARG-NEXT: Color.Type
// ATTR_GENERICARG-NEXT: $s11BuilderTest5ColorOmD
// ATTR_GENERICARG-NEXT: BuilderTest{{$}}
// ATTR_GENERICARG-NEXT: <Declaration>enum Color</Declaration>
// ATTR_GENERICARG-NEXT: <decl.enum><syntaxtype.keyword>enum</syntaxtype.keyword> <decl.name>Color</decl.name></decl.enum>
// Call for function with builder.
// RUN: %sourcekitd-test -req=cursor -pos=40:3 %s -- %s -module-name BuilderTest | %FileCheck %s --check-prefix=CALL_BUILDERFUNC
// CALL_BUILDERFUNC: source.lang.swift.ref.function.free (35:6-35:78)
// CALL_BUILDERFUNC-NEXT: acceptColorTagged(body:)
// CALL_BUILDERFUNC-NEXT: s:11BuilderTest17acceptColorTagged4bodyyxAA0D0OXE_tlF
// CALL_BUILDERFUNC-NEXT: source.lang.swift
// CALL_BUILDERFUNC-NEXT: <Result> (body: (Color) -> Result) -> ()
// CALL_BUILDERFUNC-NEXT: $s4bodyyx11BuilderTest5ColorOXE_tcluD
// CALL_BUILDERFUNC-NEXT: BuilderTest{{$}}
// CALL_BUILDERFUNC-NEXT: <Declaration>func acceptColorTagged<Result>(@<Type usr="s:11BuilderTest06TaggedA0V">TaggedBuilder</Type><<Type usr="s:11BuilderTest5ColorO">Color</Type>> body: (<Type usr="s:11BuilderTest5ColorO">Color</Type>) -> <Type usr="s:11BuilderTest17acceptColorTagged4bodyyxAA0D0OXE_tlF6ResultL_xmfp">Result</Type>)</Declaration>
// CALL_BUILDERFUNC-NEXT: <decl.function.free><syntaxtype.keyword>func</syntaxtype.keyword> <decl.name>acceptColorTagged</decl.name><<decl.generic_type_param usr="s:11BuilderTest17acceptColorTagged4bodyyxAA0D0OXE_tlF6ResultL_xmfp"><decl.generic_type_param.name>Result</decl.generic_type_param.name></decl.generic_type_param>>(<decl.var.parameter><syntaxtype.attribute.builtin><syntaxtype.attribute.name>@<ref.struct usr="s:11BuilderTest06TaggedA0V">TaggedBuilder</ref.struct><<ref.enum usr="s:11BuilderTest5ColorO">Color</ref.enum>></syntaxtype.attribute.name></syntaxtype.attribute.builtin> <decl.var.parameter.argument_label>body</decl.var.parameter.argument_label>: <decl.var.parameter.type>(<decl.var.parameter><decl.var.parameter.type><ref.enum usr="s:11BuilderTest5ColorO">Color</ref.enum></decl.var.parameter.type></decl.var.parameter>) -> <decl.function.returntype><ref.generic_type_param usr="s:11BuilderTest17acceptColorTagged4bodyyxAA0D0OXE_tlF6ResultL_xmfp">Result</ref.generic_type_param></decl.function.returntype></decl.var.parameter.type></decl.var.parameter>)</decl.function.free>
// Closure parameter - decl-site.
// RUN: %sourcekitd-test -req=cursor -pos=40:23 %s -- %s -module-name BuilderTest | %FileCheck %s --check-prefix=CLOSUREPARAM_DECL
// CLOSUREPARAM_DECL: source.lang.swift.decl.var.parameter (40:23-40:28)
// CLOSUREPARAM_DECL-NEXT: color
// CLOSUREPARAM_DECL-NEXT: s:11BuilderTest21testAcceptColorTagged1i1sySi_SStFAA0F0VyAA0E0OSiG_AFyAHSSGtAHXEfU_5colorL_AHvp
// CLOSUREPARAM_DECL-NEXT: source.lang.swift
// CLOSUREPARAM_DECL-NEXT: Color
// CLOSUREPARAM_DECL-NEXT: $s11BuilderTest5ColorOD
// CLOSUREPARAM_DECL-NEXT: BuilderTest{{$}}
// CLOSUREPARAM_DECL-NEXT: <Declaration>let color: <Type usr="s:11BuilderTest5ColorO">Color</Type></Declaration>
// CLOSUREPARAM_DECL-NEXT: <decl.var.parameter><syntaxtype.keyword>let</syntaxtype.keyword> <decl.var.parameter.name>color</decl.var.parameter.name>: <decl.var.parameter.type><ref.enum usr="s:11BuilderTest5ColorO">Color</ref.enum></decl.var.parameter.type></decl.var.parameter>
// Closure parameter - use-site.
// RUN: %sourcekitd-test -req=cursor -pos=41:11 %s -- %s -module-name BuilderTest | %FileCheck %s --check-prefix=CLOSUREPARAM_USER
// CLOSUREPARAM_USER: source.lang.swift.ref.var.local (40:23-40:28)
// CLOSUREPARAM_USER-NEXT: color
// CLOSUREPARAM_USER-NEXT: s:11BuilderTest21testAcceptColorTagged1i1sySi_SStFAA0F0VyAA0E0OSiG_AFyAHSSGtAHXEfU_5colorL_AHvp
// CLOSUREPARAM_USER-NEXT: source.lang.swift
// CLOSUREPARAM_USER-NEXT: Color
// CLOSUREPARAM_USER-NEXT: $s11BuilderTest5ColorOD
// CLOSUREPARAM_USER-NEXT: BuilderTest{{$}}
// CLOSUREPARAM_USER-NEXT: <Declaration>let color: <Type usr="s:11BuilderTest5ColorO">Color</Type></Declaration>
// CLOSUREPARAM_USER-NEXT: <decl.var.parameter><syntaxtype.keyword>let</syntaxtype.keyword> <decl.var.parameter.name>color</decl.var.parameter.name>: <decl.var.parameter.type><ref.enum usr="s:11BuilderTest5ColorO">Color</ref.enum></decl.var.parameter.type></decl.var.parameter>
// Captured variable.
// RUN: %sourcekitd-test -req=cursor -pos=41:5 %s -- %s -module-name BuilderTest | %FileCheck %s --check-prefix=CAPTURED_VALUE
// CAPTURED_VALUE: source.lang.swift.ref.var.local (39:28-39:29)
// CAPTURED_VALUE-NEXT: i
// CAPTURED_VALUE-NEXT: s:11BuilderTest21testAcceptColorTagged1i1sySi_SStFACL_Sivp
// CAPTURED_VALUE-NEXT: source.lang.swift
// CAPTURED_VALUE-NEXT: Int
// CAPTURED_VALUE-NEXT: $sSiD
// CAPTURED_VALUE-NEXT: BuilderTest{{$}}
// CAPTURED_VALUE-NEXT: <Declaration>let i: <Type usr="s:Si">Int</Type></Declaration>
// CAPTURED_VALUE-NEXT: <decl.var.parameter><syntaxtype.keyword>let</syntaxtype.keyword> <decl.var.parameter.name>i</decl.var.parameter.name>: <decl.var.parameter.type><ref.struct usr="s:Si">Int</ref.struct></decl.var.parameter.type></decl.var.parameter>
// Method call to captured variable.
// RUN: %sourcekitd-test -req=cursor -pos=41:7 %s -- %s -module-name BuilderTest | %FileCheck %s --check-prefix=CAPTURED_VALUE_METHOD
// CAPTURED_VALUE_METHOD: source.lang.swift.ref.function.method.instance (10:8-10:28)
// CAPTURED_VALUE_METHOD: tag(_:)
// CAPTURED_VALUE_METHOD: s:11BuilderTest8TaggablePAAE3tagyAA6TaggedVyqd__xGqd__lF
// CAPTURED_VALUE_METHOD: source.lang.swift
// CAPTURED_VALUE_METHOD: <Self, Tag where Self : Taggable> (Self) -> (Tag) -> Tagged<Tag, Self>
// CAPTURED_VALUE_METHOD: $sy11BuilderTest6TaggedVyqd__xGqd__cluD
// CAPTURED_VALUE_METHOD: <Container>$sSiD</Container>
// CAPTURED_VALUE_METHOD: <Declaration>func tag<<Type usr="s:11BuilderTest8TaggablePAAE3tagyAA6TaggedVyqd__xGqd__lF3TagL_qd__mfp">Tag</Type>>(_ tag: <Type usr="s:11BuilderTest8TaggablePAAE3tagyAA6TaggedVyqd__xGqd__lF3TagL_qd__mfp">Tag</Type>) -> <Type usr="s:11BuilderTest6TaggedV">Tagged</Type><<Type usr="s:11BuilderTest8TaggablePAAE3tagyAA6TaggedVyqd__xGqd__lF3TagL_qd__mfp">Tag</Type>, <Type usr="s:Si">Int</Type>></Declaration>
// CAPTURED_VALUE_METHOD: <decl.function.method.instance><syntaxtype.keyword>func</syntaxtype.keyword> <decl.name>tag</decl.name><<ref.generic_type_param usr="s:11BuilderTest8TaggablePAAE3tagyAA6TaggedVyqd__xGqd__lF3TagL_qd__mfp">Tag</ref.generic_type_param>>(<decl.var.parameter><decl.var.parameter.argument_label>_</decl.var.parameter.argument_label> <decl.var.parameter.name>tag</decl.var.parameter.name>: <decl.var.parameter.type><ref.generic_type_param usr="s:11BuilderTest8TaggablePAAE3tagyAA6TaggedVyqd__xGqd__lF3TagL_qd__mfp">Tag</ref.generic_type_param></decl.var.parameter.type></decl.var.parameter>) -> <decl.function.returntype><ref.struct usr="s:11BuilderTest6TaggedV">Tagged</ref.struct><<ref.generic_type_param usr="s:11BuilderTest8TaggablePAAE3tagyAA6TaggedVyqd__xGqd__lF3TagL_qd__mfp">Tag</ref.generic_type_param>, <ref.struct usr="s:Si">Int</ref.struct>></decl.function.returntype></decl.function.method.instance>