return x
}

func (p *parser) parseElement() ast.Expr {
	if p.trace {
		defer un(trace(p, "Element"))
	}

	x := p.parseValue()
	if p.tok == token.COLON {
		colon := p.pos
		p.next()
		x = &ast.KeyValueExpr{Key: x, Colon: colon, Value: p.parseValue()}
	}

	return x
}

func (p *parser) parseElementList() (list []ast.Expr) {
	if p.trace {
		defer un(trace(p, "ElementList"))

	}

	if p.tok == token.LBRACE {
		return p.parseLiteralValue(nil)
	}

	x := p.parseExpr(keyOk) // don't resolve if map key
	if keyOk {
		if p.tok == token.COLON {
			colon := p.pos
			p.next()
			return &ast.KeyValueExpr{x, colon, p.parseElement(false)}
		}
		p.resolve(x) // not a map key
	}

	return x
}

func (p *parser) parseElementList() (list []ast.Expr) {
	if p.trace {

			}
		}

	case *ast.CaseClause:
		if s.List != nil {
			p.print(token.CASE, blank)
			p.exprList(s.Pos(), s.List, 1, 0, s.Colon, false)
		} else {
			p.print(token.DEFAULT)
		}
		p.setPos(s.Colon)
		p.print(token.COLON)
		p.stmtList(s.Body, 1, nextIsRBrace)

	case *ast.SwitchStmt:
		p.print(token.SWITCH)
		p.controlClause(false, s.Init, s.Tag, nil)

		{"http://[::1]/", false},
		{"http://[::1]a", true},
		{"http://[::1]%23", true},
		{"http://[::1%25en0]", false},    // valid zone id
		{"http://[::1]:", false},         // colon, but no port OK
		{"http://x:", false},             // colon, but no port OK
		{"http://[::1]:%38%30", true},    // not allowed: % encoding only for non-ASCII
		{"http://[::1%25%41]", false},    // RFC 6874 allows over-escaping in zone

		// IPv6 with invalid embedded IPv4.
		"::ffff:192.168.140.bad",
		// IPv6 with multiple ellipsis ::.
		"fe80::1::1",
		// IPv6 with invalid non hex/colon character.
		"fe80:1?:1",
		// IPv6 with truncated bytes after single colon.
		"fe80:",
		// IPv6 with 5 zeros in last group
		"0:0:0:0:0:ffff:0:00000",
		// IPv6 with 5 zeros in one group and embedded IPv4
		"0:0:0:0:00000:ffff:127.1.2.3",
	}

	// under the management of go test.
	if runtime.GOOS == "windows" && len(path) >= 2 {
		letter, colon := path[0], path[1]
		if ('a' <= letter && letter <= 'z' || 'A' <= letter && letter <= 'Z') && colon == ':' {
			// If path starts with a drive letter we're stuck with it regardless.
			return path
		}
	}
	if os.IsPathSeparator(path[0]) {
		return path
	}

		p.next()
		c.Cases = p.exprList()

	case _Default:
		p.next()

	default:
		p.syntaxError("expected case or default or }")
		p.advance(_Colon, _Case, _Default, _Rbrace)
	}

	c.Colon = p.pos()
	p.want(_Colon)
	c.Body = p.stmtList()

	return c
}

func (p *parser) commClause() *CommClause {
	if trace {
		defer p.trace("commClause")()
	}

	rxAsmComment = regexp.MustCompile(`^\s*(.*?)\s*(?://\s*(.+)\s*)?$`)

	// Regexp to extract an architecture check: architecture name (or triplet),
	// followed by semi-colon, followed by a comma-separated list of opcode checks.
	// Extraneous spaces are ignored.
	//
	// An example: arm64/v8.1 : -`ADD` , `SUB`
	//	"(\w+)" matches "arm64" (architecture name)

  // The full name of a test Bar in test case Foo is defined as
  // "Foo.Bar".  Only the tests that match the filter will run.
  //
  // A filter is a colon-separated list of glob (not regex) patterns,
  // optionally followed by a '-' and a colon-separated list of
  // negative patterns (tests to exclude).  A test is run if it
  // matches one of the positive patterns and does not match any of
  // the negative patterns.

    warning_log "etcd terminated unexpectedly"
    ETCD_PID=
  fi
}

function print_color {
  message=$1
  prefix=${2:+$2: } # add colon only if defined
  color=${3:-1}     # default is red
  echo -n "$(tput bold)$(tput setaf "${color}")"
  echo "${prefix}${message}"
  echo -n "$(tput sgr0)"
}

function warning_log {