r = c.Type(unqual(dtype.ReturnType), pos)
		gr = []*ast.Field{{Type: r.Go}}
	}
	return &FuncType{
		Params: p,
		Result: r,
		Go: &ast.FuncType{
			Params:  &ast.FieldList{List: gp},
			Results: &ast.FieldList{List: gr},
		},
	}
}

// Identifier
func (c *typeConv) Ident(s string) *ast.Ident {
	return ast.NewIdent(s)
}

// Opaque type of n bytes.

		if node.Body != nil {
			u.node(node.Body)
		}
	case *ast.FuncType:
		if node.Params != nil {
			u.node(node.Params)
		}
		if node.Results != nil {
			u.node(node.Results)
		}
	case *ast.FieldList:
		for _, field := range node.List {
			u.node(field)
		}
	case *ast.Field:
		u.node(node.Type)

	// statements

	case *ast.BlockStmt:
		defer u.scoped()()

		{"Field.Doc", Field, 0},
		{"Field.Names", Field, 0},
		{"Field.Tag", Field, 0},
		{"Field.Type", Field, 0},
		{"FieldFilter", Type, 0},
		{"FieldList", Type, 0},
		{"FieldList.Closing", Field, 0},
		{"FieldList.List", Field, 0},
		{"FieldList.Opening", Field, 0},
		{"File", Type, 0},
		{"File.Comments", Field, 0},
		{"File.Decls", Field, 0},
		{"File.Doc", Field, 0},
		{"File.FileEnd", Field, 20},

pkg go/ast, type Field struct, Type Expr
pkg go/ast, type FieldFilter func(string, reflect.Value) bool
pkg go/ast, type FieldList struct
pkg go/ast, type FieldList struct, Closing token.Pos
pkg go/ast, type FieldList struct, List []*Field
pkg go/ast, type FieldList struct, Opening token.Pos
pkg go/ast, type File struct
pkg go/ast, type File struct, Comments []*CommentGroup

var len=attr('length'),isString=partialComplete(isOfType,String);function defined(value){return value!==undefined;}
function hasAllProperties(fieldList,o){return(o instanceof Object)&&all(function(field){return(field in o);},fieldList);}
function cons(x,xs){return[x,xs];}
var emptyList=null,head=attr(0),tail=attr(1);function arrayAsList(inputArray){return reverseList(inputArray.reduce(flip(cons),emptyList));}