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Fix renaming enum case parameters with unnamed associated arguments
We treated enum case parameters the same way as function parameters and weren’t considering that they can be unlabeled. That caused us to insert eg. `_ ` in front of the case’s type, producing `case myCase(_ String)`, which is invalid. When we are inside an enum case parameter and the parameter label is empty, treat it the same as a function call, which will leave the label untouched if it isn’t modified and insert a label including a colon if a new label is introduced. swiftlang/sourcekit-lsp#1228
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‎include/swift/IDE/IDEBridging.h‎

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@@ -38,6 +38,13 @@ enum class LabelRangeType {
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/// `func foo([a b]: Int)`
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Param,
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/// The parameter of an enum case declaration
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///
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/// ### Examples
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/// - `case myCase([a]: Int)`
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/// - `case myCase([]Int)`
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EnumCaseParam,
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/// Parameters of a function that can't be collapsed if they are the same.
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///
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/// This is the case for parameters of subscripts since subscripts have

‎include/swift/IDE/Utils.h‎

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@@ -465,15 +465,34 @@ enum class RegionType {
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};
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enum class RefactoringRangeKind {
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BaseName, // func [foo](a b: Int)
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KeywordBaseName, // [init](a: Int)
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ParameterName, // func foo(a[ b]: Int)
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NoncollapsibleParameterName, // subscript(a[ a]: Int)
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DeclArgumentLabel, // func foo([a] b: Int)
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CallArgumentLabel, // foo([a]: 1)
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CallArgumentColon, // foo(a[: ]1)
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CallArgumentCombined, // foo([]1) could expand to foo([a: ]1)
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SelectorArgumentLabel, // foo([a]:)
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/// `func [foo](a b: Int)`
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BaseName,
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/// `[init](a: Int)`
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KeywordBaseName,
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/// `func foo(a[ b]: Int)`
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ParameterName,
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/// `subscript(a[ a]: Int)`
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NoncollapsibleParameterName,
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/// `func foo([a] b: Int)`
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DeclArgumentLabel,
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/// `foo([a]: 1)`
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CallArgumentLabel,
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/// `foo(a[: ]1)`
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CallArgumentColon,
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/// `foo([]1) could expand to foo([a: ]1)`
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/// Also used for enum case declarations without a label, eg.
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/// `case foo([]String)` should expand to `case foo([a: ]String)`.
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CallArgumentCombined,
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/// `foo([a]:)`
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SelectorArgumentLabel,
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};
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struct NoteRegion {

‎lib/ASTGen/Sources/SwiftIDEUtilsBridging/NameMatcherBridging.swift‎

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@@ -50,6 +50,7 @@ fileprivate extension IDEBridging.LabelRangeType {
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case .noArguments: self = .None
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case .call: self = .CallArg
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case .parameters: self = .Param
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case .enumCaseParameters: self = .EnumCaseParam
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case .noncollapsibleParameters: self = .NoncollapsibleParam
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case .selector: self = .CompoundName
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#if RESILIENT_SWIFT_SYNTAX
@@ -72,6 +73,7 @@ extension BridgedResolvedLoc {
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case .noArguments: arguments = []
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case .call(let arguments2, _): arguments = arguments2
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case .parameters(let arguments2): arguments = arguments2
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case .enumCaseParameters(let arguments2): arguments = arguments2
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case .noncollapsibleParameters(let arguments2): arguments = arguments2
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case .selector(let arguments2): arguments = arguments2
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#if RESILIENT_SWIFT_SYNTAX

‎lib/Refactoring/SyntacticRenameRangeDetails.cpp‎

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Original file line numberDiff line numberDiff line change
@@ -146,6 +146,18 @@ void RenameRangeDetailCollector::splitAndRenameLabel(CharSourceRange Range,
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return splitAndRenameCallArg(Range, NameIndex);
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case LabelRangeType::Param:
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return splitAndRenameParamLabel(Range, NameIndex, /*IsCollapsible=*/true);
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case LabelRangeType::EnumCaseParam:
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if (Range.getByteLength() == 0) {
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// If the associated value currently doesn't have a label, emit a
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// `CallArgumentCombined` range, which will cause a new label followed by
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// `:` to be inserted in the same fashion that call arguments get inserted
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// to calls
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return addRenameRange(Range, RefactoringRangeKind::CallArgumentCombined, NameIndex);
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} else {
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// If the associated value has a label already, we are in the same case as
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// function parameters.
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return splitAndRenameParamLabel(Range, NameIndex, /*IsCollapsible=*/true);
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}
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case LabelRangeType::NoncollapsibleParam:
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return splitAndRenameParamLabel(Range, NameIndex,
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/*IsCollapsible=*/false);
@@ -248,6 +260,7 @@ bool RenameRangeDetailCollector::labelRangeMatches(CharSourceRange Range,
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LLVM_FALLTHROUGH;
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case LabelRangeType::CallArg:
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case LabelRangeType::Param:
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case LabelRangeType::EnumCaseParam:
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case LabelRangeType::CompoundName:
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return ExistingLabel == (Expected.empty() ? "_" : Expected);
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case LabelRangeType::None:

‎test/SourceKit/Refactoring/find_rename_ranges_enum_case_with_label.swift‎

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@@ -0,0 +1,46 @@
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// RUN: %empty-directory(%t)
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// RUN: split-file %s %t
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// RUN: %sourcekitd-test -req=find-rename-ranges -rename-spec %t/rename-spec.json %t/input.swift | %FileCheck %s
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// CHECK: source.edit.kind.active:
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// CHECK-NEXT: 2:8-2:14 source.refactoring.range.kind.basename
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// CHECK-NEXT: 2:15-2:20 source.refactoring.range.kind.decl-argument-label arg-index=0
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// CHECK-NEXT: 2:20-2:20 source.refactoring.range.kind.parameter-and-whitespace arg-index=0
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// CHECK-NEXT: source.edit.kind.active:
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// CHECK-NEXT: 6:14-6:20 source.refactoring.range.kind.basename
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// CHECK-NEXT: 6:21-6:26 source.refactoring.range.kind.call-argument-label arg-index=0
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// CHECK-NEXT: 6:26-6:28 source.refactoring.range.kind.call-argument-colon arg-index=0
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//--- input.swift
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enum MyEnum {
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case myCase(label: String)
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}
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func test() {
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_ = MyEnum.myCase(label: "abc")
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}
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//--- rename-spec.json
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[
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{
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"key.name": "myCase(label:)",
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"key.locations": [
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{
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"key.line": 2,
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"key.column": 8,
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"key.nametype": source.syntacticrename.definition
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}
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]
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},
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{
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"key.name": "myCase(label:)",
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"key.locations": [
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{
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"key.line": 6,
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"key.column": 14,
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"key.nametype": source.syntacticrename.call
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}
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]
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}
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]

‎test/SourceKit/Refactoring/find_rename_ranges_enum_case_without_label.swift‎

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// RUN: %empty-directory(%t)
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// RUN: split-file %s %t
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// RUN: %sourcekitd-test -req=find-rename-ranges -rename-spec %t/rename-spec.json %t/input.swift | %FileCheck %s
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// CHECK: source.edit.kind.active:
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// CHECK-NEXT: 2:8-2:14 source.refactoring.range.kind.basename
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// CHECK-NEXT: 2:15-2:15 source.refactoring.range.kind.call-argument-combined arg-index=0
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// CHECK-NEXT: source.edit.kind.active:
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// CHECK-NEXT: 6:14-6:20 source.refactoring.range.kind.basename
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// CHECK-NEXT: 6:21-6:21 source.refactoring.range.kind.call-argument-combined arg-index=0
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//--- input.swift
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enum MyEnum {
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case myCase(String)
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}
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func test() {
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_ = MyEnum.myCase("abc")
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}
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//--- rename-spec.json
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[
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{
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"key.name": "myCase(_:)",
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"key.locations": [
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{
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"key.line": 2,
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"key.column": 8,
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"key.nametype": source.syntacticrename.definition
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}
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]
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},
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{
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"key.name": "myCase(_:)",
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"key.locations": [
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{
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"key.line": 6,
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"key.column": 14,
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"key.nametype": source.syntacticrename.call
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}
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]
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}
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]

‎test/SourceKit/Refactoring/find_rename_ranges_enum_case_without_underscore_as_first_name_label.swift‎

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// RUN: %empty-directory(%t)
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// RUN: split-file %s %t
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// RUN: %sourcekitd-test -req=find-rename-ranges -rename-spec %t/rename-spec.json %t/input.swift | %FileCheck %s
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// CHECK: source.edit.kind.active:
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// CHECK-NEXT: 2:8-2:14 source.refactoring.range.kind.basename
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// CHECK-NEXT: 2:15-2:16 source.refactoring.range.kind.decl-argument-label arg-index=0
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// CHECK-NEXT: 2:16-2:22 source.refactoring.range.kind.parameter-and-whitespace arg-index=0
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// CHECK-NEXT: source.edit.kind.active:
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// CHECK-NEXT: 6:14-6:20 source.refactoring.range.kind.basename
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// CHECK-NEXT: 6:21-6:21 source.refactoring.range.kind.call-argument-combined arg-index=0
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//--- input.swift
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enum MyEnum {
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case myCase(_ label: String)
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}
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func test() {
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_ = MyEnum.myCase("abc")
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}
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//--- rename-spec.json
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[
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{
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"key.name": "myCase(:)",
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"key.locations": [
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{
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"key.line": 2,
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"key.column": 8,
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"key.nametype": source.syntacticrename.definition
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}
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]
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},
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{
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"key.name": "myCase(:)",
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"key.locations": [
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{
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"key.line": 6,
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"key.column": 14,
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"key.nametype": source.syntacticrename.call
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}
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]
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}
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]

‎test/refactoring/SyntacticRename/Outputs/types/case-other.swift.expected‎

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@@ -27,7 +27,7 @@ extension /*class-Animal:def*/Animal {
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enum /*enum-Barcode:def*/Barcode {
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case upc(Int, Int, Int, Int)
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case /*case-qrCode:def*/qrCode(code: String)
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case /*case-other:def*/<base>other</base>(<arglabel index=0></arglabel><param index=0></param>Int)
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case /*case-other:def*/<base>other</base>(<callcombo index=0></callcombo>Int)
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case /*case-another:def*/another
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}
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var barCode: /*enum-Barcode*/Barcode = /*enum-Barcode*/Barcode.upc(1, 1, 1, 1)

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