Fundamentals for Building Convenience with SwiftSyntax
summary
Shows how to use SwiftSyntax to parse Swift source into a syntax tree, traverse into an if-condition to find an optional-binding variable pattern, and rename a misnamed identifier by subclassing SyntaxRewriter and creating a new identifier with SyntaxFactory. The demo walks through code that locates a variable named "this", renames it to "self", runs the rewriter and prints the transformed source, and notes a formatting issue where spacing around "=" can be lost.
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