Tweak generics in macro expansion code

Author: grynspan

Sources/TestingMacros/Support/ConditionArgumentParsing.swift

@@ -137,7 +137,7 @@ private final class _ContextInserter<C, M>: SyntaxRewriter where C: MacroExpansi
   ///
   /// - Returns: A rewritten copy of `node` that calls into the expression
   ///   context when it is evaluated at runtime.
-  private func _rewrite<E>(_ node: E, originalWas originalNode: some SyntaxProtocol, calling functionName: TokenSyntax? = nil, passing additionalArguments: [Argument] = []) -> ExprSyntax where E: ExprSyntaxProtocol {
+  private func _rewrite(_ node: some ExprSyntaxProtocol, originalWas originalNode: some ExprSyntaxProtocol, calling functionName: TokenSyntax? = nil, passing additionalArguments: [Argument] = []) -> ExprSyntax {
     guard rewrittenNodes.insert(Syntax(originalNode)).inserted else {
       // If this node has already been rewritten, we don't need to rewrite it
       // again. (Currently, this can only happen when expanding binary operators
@@ -196,7 +196,7 @@ private final class _ContextInserter<C, M>: SyntaxRewriter where C: MacroExpansi
   ///   context when it is evaluated at runtime.
   ///
   /// This function is equivalent to `_rewrite(node, originalWas: node)`.
-  private func _rewrite<E>(_ node: E, calling functionName: TokenSyntax? = nil, passing additionalArguments: [Argument] = []) -> ExprSyntax where E: ExprSyntaxProtocol {
+  private func _rewrite(_ node: some ExprSyntaxProtocol, calling functionName: TokenSyntax? = nil, passing additionalArguments: [Argument] = []) -> ExprSyntax {
     _rewrite(node, originalWas: node, calling: functionName, passing: additionalArguments)
   }
 
@@ -423,7 +423,7 @@ private final class _ContextInserter<C, M>: SyntaxRewriter where C: MacroExpansi
   ///     the original syntax tree.
   ///
   /// - Returns: A function call expression equivalent to the described cast.
-  private func _rewriteAsCast(_ valueExpr: ExprSyntax, _ isAsKeyword: Keyword, _ type: TypeSyntax, originalWas originalNode: some SyntaxProtocol) -> ExprSyntax {
+  private func _rewriteAsCast(_ valueExpr: ExprSyntax, _ isAsKeyword: Keyword, _ type: TypeSyntax, originalWas originalNode: some ExprSyntaxProtocol) -> ExprSyntax {
     rewrittenNodes.insert(Syntax(type))
 
     return _rewrite(