// NewAutoImporter returns an AutoImporter visitor that generates patches to add missing
// import statements to the standard library.
// auto := NewAutoImporter(patchable.File)
// scopes.WalkFile(patchable.File, auto)
// patchable.FprintPatched(os.Stdout, patchable.All(), auto.Patches)
func NewAutoImporter(file *ast.File) *AutoImporter {
auto := &AutoImporter{patch.Patches{}, make(map[*ast.Ident]bool), make(map[string]bool), file.Name.End()}
for _, imp := range file.Imports {
auto.m[imports.GetNameOrGuess(imp)] = true
}
return auto
}
func (v *Unused) ExitScope(scope *ast.Scope, node ast.Node, last bool) scopes.Visitor {
for _, obj := range scope.Objects {
if !v.Used[obj] {
v.Visitor.UnusedObj(obj, node)
}
}
if file, ok := node.(*ast.File); ok {
for _, imp := range file.Imports {
name := imports.GetNameOrGuess(imp)
if !v.UsedImports[name] && !anonymousImport(imp.Name) && imp.Path.Value != `"C"` {
v.Visitor.UnusedImport(imp)
}
}
}
return v
}