//	)
type LineBlock struct {
	Comments
	Start  Position
	LParen LParen
	Token  []string
	Line   []*Line
	RParen RParen
}

func (x *LineBlock) Span() (start, end Position) {
	return x.Start, x.RParen.Pos.add(")")
}

// An LParen represents the beginning of a parenthesized line block.
// It is a place to store suffix comments.
type LParen struct {
	Comments
	Pos Position
}

			children = append(children,
				tok(n.Func, len("func")))
		}

	case *ast.GenDecl:
		children = append(children,
			tok(n.TokPos, len(n.Tok.String())))
		if n.Lparen != 0 {
			children = append(children,
				tok(n.Lparen, len("(")),
				tok(n.Rparen, len(")")))
		}

	case *ast.GoStmt:
		children = append(children,
			tok(n.Go, len("go")))

	case *ast.Ident:
		children = append(children,

					if isIdent(n.Args[0], "pos") {
						pos := n.Args[0].Pos()
						fun := &ast.SelectorExpr{X: newIdent(pos, "posn"), Sel: newIdent(pos, "Pos")}
						arg := &ast.CallExpr{Fun: fun, Lparen: pos, Args: nil, Ellipsis: token.NoPos, Rparen: pos}
						n.Args[0] = arg
						return false
					}
				case "addf":
					// rewrite err.addf(pos, ...) to err.addf(posn, ...)
					if isIdent(n.Args[0], "pos") {

							return gen, true
						}
					}
				}
			}
		}
	}
	return "", false
}

// Unparen returns the expression with any enclosing parentheses removed.
func Unparen(e Expr) Expr {
	for {
		paren, ok := e.(*ParenExpr)
		if !ok {
			return e
		}
		e = paren.X
	}

	}
	newImport.Path.ValuePos = pos
	newImport.EndPos = pos

	// Clean up parens. impDecl contains at least one spec.
	if len(impDecl.Specs) == 1 {
		// Remove unneeded parens.
		impDecl.Lparen = token.NoPos
	} else if !impDecl.Lparen.IsValid() {
		// impDecl needs parens added.
		impDecl.Lparen = impDecl.Specs[0].Pos()
	}

	f.Imports = append(f.Imports, newImport)

	if len(f.Decls) <= 1 {

		copy(f.Decls[lastImport+2:], f.Decls[lastImport+1:])
		f.Decls[lastImport+1] = impDecl
	}

	// Ensure the import decl has parentheses, if needed.
	if len(impDecl.Specs) > 0 && !impDecl.Lparen.IsValid() {
		impDecl.Lparen = impDecl.Pos()
	}

	insertAt := impIndex + 1
	if insertAt == 0 {
		insertAt = len(impDecl.Specs)
	}
	impDecl.Specs = append(impDecl.Specs, nil)

			if d.Doc != nil {
				comments = append(comments, d.Doc)
			}
		}
	}

	// Synthesize import declaration.
	importDecl := &ast.GenDecl{
		Tok:    token.IMPORT,
		Lparen: 1, // Need non-zero Lparen and Rparen so that printer
		Rparen: 1, // treats this as a factored import.
	}
	importDecl.Specs = append(namedImports, blankImports...)

	// Synthesize main function.
	funcDecl := &ast.FuncDecl{

	// now remove parentheses from the declaration
	for i := 0; i != len(f.Decls); i++ {
		f.Decls[i].(*ast.GenDecl).Lparen = token.NoPos
	}
	buf.Reset()
	err = Fprint(&buf, fset, f)
	if err != nil {
		t.Fatal(err)
	}
	noparen := buf.String()

	if noparen != original {
		t.Errorf("got %q, want %q", noparen, original)
	}
}

// Verify that we don't print a newline between "return" and its results, as

		if name == "CBytes" {
			return true
		}

		if debug {
			log.Printf("%s: call to C.%s", fset.Position(call.Lparen), name)
		}

		for _, arg := range call.Args {
			if !typeOKForCgoCall(cgoBaseType(info, arg), make(map[types.Type]bool)) {
				reportf(arg.Pos(), "possibly passing Go type with embedded pointer to C")
				break
			}

			// Check for passing the address of a bad type.

	if idx < 0 {
		if false {
			pass.Reportf(call.Lparen, "can't check non-constant format in call to %s", fn.FullName())
		}
		return
	}

	firstArg := idx + 1 // Arguments are immediately after format string.
	if !strings.Contains(format, "%") {
		if len(call.Args) > firstArg {
			pass.Reportf(call.Lparen, "%s call has arguments but no formatting directives", fn.FullName())
		}
		return
	}