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Support for c# 12 collection expressions
closes #964
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18 changes: 18 additions & 0 deletions
18
Src/CSharpier.Tests/FormattingTests/TestFiles/cs/CollectionExpressions.test
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,18 @@ | ||
| int[] a = [ 1, 2, 3, 4, 5, 6, 7, 8 ]; | ||
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| Span<int> b = [ 'a', 'b', 'c', 'd', 'e', 'f', 'h', 'i' ]; | ||
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| string[] c = | ||
| [ | ||
| "________________________", | ||
| "________________________", | ||
| "________________________", | ||
| "________________________" | ||
| ]; | ||
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| int[][] d = | ||
| [ | ||
| [1, 2, 3], | ||
| [4, 5, 6], | ||
| [7, 8, 9] | ||
| ]; |
38 changes: 38 additions & 0 deletions
38
Src/CSharpier/SyntaxPrinter/SyntaxNodePrinters/CollectionExpression.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,38 @@ | ||
| namespace CSharpier.SyntaxPrinter.SyntaxNodePrinters; | ||
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| internal static class CollectionExpression | ||
| { | ||
| public static Doc Print(CollectionExpressionSyntax node, FormattingContext context) | ||
| { | ||
| Doc separator = node.Parent | ||
| is AssignmentExpressionSyntax | ||
| or EqualsValueClauseSyntax { Parent: not PropertyDeclarationSyntax } | ||
| ? Doc.Line | ||
| : Doc.Null; | ||
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| var alwaysBreak = | ||
| node.Elements.FirstOrDefault() | ||
| is ExpressionElementSyntax { Expression: CollectionExpressionSyntax }; | ||
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| var result = Doc.Concat( | ||
| separator, | ||
| Token.Print(node.OpenBracketToken, context), | ||
| Doc.Indent( | ||
| alwaysBreak ? Doc.HardLine : Doc.Line, | ||
| SeparatedSyntaxList.Print( | ||
| node.Elements, | ||
| Node.Print, | ||
| alwaysBreak ? Doc.HardLine : Doc.Line, | ||
| context | ||
| ) | ||
| ), | ||
| node.Elements.Any() | ||
| ? alwaysBreak | ||
| ? Doc.HardLine | ||
| : Doc.Line | ||
| : Doc.Null, | ||
| Token.Print(node.CloseBracketToken, context) | ||
| ); | ||
| return Doc.Group(result); | ||
| } | ||
| } |