Golang go/format.Node() function example
package go/format
Node formats node in canonical gofmt style and writes the result to dst (1st parameter).
The node type must be *ast.File, *printer.CommentedNode, []ast.Decl, []ast.Stmt, or assignment-compatible to ast.Expr, ast.Decl, ast.Spec, or ast.Stmt. Node does not modify node. Imports are not sorted for nodes representing partial source files (i.e., if the node is not an *ast.File or a *printer.CommentedNode not wrapping an *ast.File).
The function may return early (before the entire result is written) and return a formatting error, for instance due to an incorrect AST.
Golang go/format.Node() function usage example
var fset *token.FileSet
var f *ast.File,
var buf bytes.Buffer
if err := format.Node(&buf, fset, f); err != nil {
fmt.Printf("Error formatting ast.File node: %v", err)
os.Exit(1)
}
Reference :
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