}
	}
	return list[0:j]
}

// FilterDecl trims the AST for a Go declaration in place by removing
// all names (including struct field and interface method names, but
// not from parameter lists) that don't pass through the filter f.
//
// FilterDecl reports whether there are any declared names left after
// filtering.
func FilterDecl(decl Decl, f Filter) bool {
	return filterDecl(decl, f, false)
}

				prevType = spec.Type
			}
		}
	}

	j := 0
	for _, s := range list {
		if r.filterSpec(s) {
			list[j] = s
			j++
		}
	}
	return list[0:j]
}

func (r *reader) filterDecl(decl ast.Decl) bool {
	switch d := decl.(type) {
	case *ast.GenDecl:
		d.Specs = r.filterSpecList(d.Specs, d.Tok)
		return len(d.Specs) > 0
	case *ast.FuncDecl:
		// ok to filter these methods early because any

		{"File.Imports", Field, 0},
		{"File.Name", Field, 0},
		{"File.Package", Field, 0},
		{"File.Scope", Field, 0},
		{"File.Unresolved", Field, 0},
		{"FileExports", Func, 0},
		{"Filter", Type, 0},
		{"FilterDecl", Func, 0},
		{"FilterFile", Func, 0},
		{"FilterFuncDuplicates", Const, 0},
		{"FilterImportDuplicates", Const, 0},
		{"FilterPackage", Func, 0},
		{"FilterUnassociatedComments", Const, 0},

pkg go/ast, const Pkg ObjKind
pkg go/ast, const RECV ChanDir
pkg go/ast, const SEND ChanDir
pkg go/ast, const Typ ObjKind
pkg go/ast, const Var ObjKind
pkg go/ast, func FileExports(*File) bool
pkg go/ast, func FilterDecl(Decl, Filter) bool
pkg go/ast, func FilterFile(*File, Filter) bool
pkg go/ast, func FilterPackage(*Package, Filter) bool
pkg go/ast, func Fprint(io.Writer, *token.FileSet, interface{}, FieldFilter) error