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Add support for or-pattern in IDE0010 #73574

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merged 3 commits into from
May 25, 2024
Merged

Add support for or-pattern in IDE0010 #73574

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a0e8da7
Add support for or-pattern in `IDE0010`
RenderMichael May 19, 2024
d862af7
rename variable
RenderMichael May 19, 2024
af4d9b2
Share a helper with the switch expression helper
RenderMichael May 24, 2024
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118 changes: 118 additions & 0 deletions src/Analyzers/CSharp/Tests/PopulateSwitch/PopulateSwitchStatementTests.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -1638,4 +1638,122 @@ void Method(int i)
}
""");
}

[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/73245")]
public async Task NotAllMembersExist_NotDefault_WithOr()
{
await TestInRegularAndScriptAsync(
"""
namespace ConsoleApplication1
{
enum MyEnum
{
Fizz,
Buzz,
FizzBuzz
}

class MyClass
{
void Method()
{
var e = MyEnum.Fizz;
[||]switch (e)
{
case MyEnum.Fizz or MyEnum.Buzz:
break;
}
}
}
}
""",
"""
namespace ConsoleApplication1
{
enum MyEnum
{
Fizz,
Buzz,
FizzBuzz
}

class MyClass
{
void Method()
{
var e = MyEnum.Fizz;
switch (e)
{
case MyEnum.Fizz or MyEnum.Buzz:
break;
case MyEnum.FizzBuzz:
break;
default:
break;
}
}
}
}
""", index: 2);
}

[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/73245")]
public async Task NotAllMembersExist_WithDefault_WithOr()
{
await TestInRegularAndScriptAsync(
"""
namespace ConsoleApplication1
{
enum MyEnum
{
Fizz,
Buzz,
FizzBuzz
}

class MyClass
{
void Method()
{
var e = MyEnum.Fizz;
[||]switch (e)
{
case MyEnum.Fizz or MyEnum.Buzz:
break;
default:
break;
}
}
}
}
""",
"""
namespace ConsoleApplication1
{
enum MyEnum
{
Fizz,
Buzz,
FizzBuzz
}

class MyClass
{
void Method()
{
var e = MyEnum.Fizz;
switch (e)
{
case MyEnum.Fizz or MyEnum.Buzz:
break;
case MyEnum.FizzBuzz:
break;
default:
break;
}
}
}
}
""");
}
}
24 changes: 24 additions & 0 deletions src/Analyzers/Core/Analyzers/PopulateSwitch/PopulateSwitchStatementHelpers.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -133,6 +133,30 @@ private static bool TryRemoveExistingEnumMembers(ISwitchOperation switchStatemen
var caseValue = IntegerUtilities.ToInt64(value.ConstantValue.Value);
enumValues.Remove(caseValue);

break;

case CaseKind.Pattern:
foreach (var operation in clause.ChildOperations) // clause is IPatternCaseClauseOperation
{
foreach (var subCase in operation.ChildOperations) // operation is IBinaryPatternOperation
{
if (subCase.Kind is not OperationKind.ConstantPattern)
continue;

foreach (var subCaseOp in subCase.ChildOperations)
{
if (subCaseOp is not IFieldReferenceOperation field)
continue;

if (field.Field.ConstantValue is null)
continue;

var @case = IntegerUtilities.ToInt64(field.Field.ConstantValue);
enumValues.Remove(@case);
}
}
}

break;
}
}
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