n = paren
		}

		return n
	}
	ir.EditChildren(fn, mark)

	// Edit until stable.
	for {
		done := true

		for i := 0; i < len(parens); i++ { // can't use "range parens" here
			paren := parens[i]
			if new := edit(paren.X); new != nil {
				// Update AST and recursively mark nodes.
				paren.X = new
				ir.EditChildren(new, mark) // mark may append to parens
				done = false
			}

{
    "defaultSeverity": "error",
    "extends": [
        "tslint:recommended"
    ],
    "rules": {
        "max-line-length": {
            "options": [160]
        },
        "arrow-parens": false,
        "new-parens": true,
        "no-arg": true,
        "no-bitwise": true,
        "no-conditional-assignment": true,
        "no-consecutive-blank-lines": true,
        "no-console": {
            "severity": "warning",

		use(x)
	}	// no parens printed
}

// Formatting of for-statement headers for multi-line for-loops.
func _() {
	for {
	}
	for expr {
	}
	for expr {
	}	// no parens printed
	for {
	}	// no semicolons printed
	for x := expr; ; {
		use(x)
	}
	for expr {
	}	// no semicolons printed
	for expr {
	}	// no semicolons and parens printed
	for ; ; expr = false {
	}

	if (expr){}  // no parens printed
	if;((expr)){}  // no semicolon and parens printed
	if x:=expr;true{
	use(x)}
	if x:=expr; expr {use(x)}
}


// Formatting of switch-statement headers.
func _() {
	switch {}
	switch;{}  // no semicolon printed
	switch expr {}
	switch;expr{}  // no semicolon printed
	switch (expr) {}  // no parens printed

	// Posix repetitions
	{`a{1}`, `a`},
	{`a{2}`, `aa`},
	{`a{5}`, `aaaaa`},
	{`a{0,1}`, `a?`},
	// The next three are illegible because Simplify inserts (?:)
	// parens instead of () parens to avoid creating extra
	// captured subexpressions. The comments show a version with fewer parens.
	{`(a){0,2}`, `(?:(a)(a)?)?`},                       //       (aa?)?
	{`(a){0,4}`, `(?:(a)(?:(a)(?:(a)(a)?)?)?)?`},       //   (a(a(aa?)?)?)?

// errorcheck

// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Issue 4470: parens are not allowed around .(type) "expressions"

package main

func main() {
	var i interface{}
	switch (i.(type)) { // ERROR "outside type switch"
	default:
	}
	_ = i

		w.string("map[")
		w.typ(t.key)
		w.byte(']')
		w.typ(t.elem)

	case *Chan:
		var s string
		var parens bool
		switch t.dir {
		case SendRecv:
			s = "chan "
			// chan (<-chan T) requires parentheses
			if c, _ := t.elem.(*Chan); c != nil && c.dir == RecvOnly {
				parens = true
			}
		case SendOnly:
			s = "chan<- "
		case RecvOnly:
			s = "<-chan "
		default:

  single-line-per-selector: 0
  space-after-bang: 2
  space-after-colon: 2
  space-after-comma: 2
  space-around-operator: 2
  space-before-bang: 2
  space-before-brace: 2
  space-before-colon: 2
  space-between-parens: 2
  trailing-semicolon: 2
  url-quotes: 2
  variable-for-property:
    - 0
    -
      properties:
        - color
        - background-color
        - fill
  variable-name-format: 0

		w.string("map[")
		w.typ(t.key)
		w.byte(']')
		w.typ(t.elem)

	case *Chan:
		var s string
		var parens bool
		switch t.dir {
		case SendRecv:
			s = "chan "
			// chan (<-chan T) requires parentheses
			if c, _ := t.elem.(*Chan); c != nil && c.dir == RecvOnly {
				parens = true
			}
		case SendOnly:
			s = "chan<- "
		case RecvOnly:
			s = "<-chan "
		default:

		"define without value",
		"#define A",
		"",
	},
	{
		"macro without arguments",
		"#define A() 1234\n" + "A()\n",
		"1234.\n",
	},
	{
		"macro with just parens as body",
		"#define A () \n" + "A\n",
		"(.).\n",
	},
	{
		"macro with parens but no arguments",
		"#define A (x) \n" + "A\n",
		"(.x.).\n",
	},
	{
		"macro with arguments",
		"#define A(x, y, z) x+z+y\n" + "A(1, 2, 3)\n",
		"1.+.3.+.2.\n",