Move function parameters emission to separate method

typon/trans/transpiler/phases/emit_cpp/block.py

@@ -68,6 +68,19 @@ class BlockVisitor(NodeVisitor):
                 yield f" {name};"
             yield from child_visitor.visit(child)
 
+    def visit_func_params(self, args: Iterable[tuple[str, BaseType, Optional[ast.expr]]], emission: FunctionEmissionKind) -> Iterable[str]:
+        for i, (arg, argty, default) in enumerate(args):
+            if i != 0:
+                yield ", "
+            if emission == FunctionEmissionKind.METHOD and i == 0:
+                yield "Self"
+            else:
+                yield from self.visit(argty)
+            yield arg
+            if emission in {FunctionEmissionKind.DECLARATION, FunctionEmissionKind.LAMBDA, FunctionEmissionKind.METHOD} and default:
+                yield " = "
+                yield from self.expr().visit(default)
+
     def visit_func_new(self, node: ast.FunctionDef, emission: FunctionEmissionKind, skip_first_arg: bool = False) -> Iterable[str]:
         if emission == FunctionEmissionKind.LAMBDA:
             yield "[&]"
@@ -83,17 +96,7 @@ class BlockVisitor(NodeVisitor):
         args_iter = zip(node.args.args, node.type.parameters, padded_defaults)
         if skip_first_arg:
             next(args_iter)
-        for i, (arg, argty, default) in enumerate(args_iter):
-            if i != 0:
-                yield ", "
-            if emission == FunctionEmissionKind.METHOD and i == 0:
-                yield "Self"
-            else:
-                yield from self.visit(argty)
-            yield arg.arg
-            if emission in {FunctionEmissionKind.DECLARATION, FunctionEmissionKind.LAMBDA, FunctionEmissionKind.METHOD} and default:
-                yield " = "
-                yield from self.expr().visit(default)
+        yield from self.visit_func_params(((arg.arg, argty, default) for arg, argty, default in args_iter), emission)
         yield ")"
 
         if emission == FunctionEmissionKind.METHOD: