"testing"
)

var assignOps = map[token.Token]token.Token{
	token.ADD_ASSIGN:     token.ADD,
	token.SUB_ASSIGN:     token.SUB,
	token.MUL_ASSIGN:     token.MUL,
	token.QUO_ASSIGN:     token.QUO,
	token.REM_ASSIGN:     token.REM,
	token.AND_ASSIGN:     token.AND,
	token.OR_ASSIGN:      token.OR,
	token.XOR_ASSIGN:     token.XOR,
	token.SHL_ASSIGN:     token.SHL,
	token.SHR_ASSIGN:     token.SHR,

	QUO // /
	REM // %

	AND     // &
	OR      // |
	XOR     // ^
	SHL     // <<
	SHR     // >>
	AND_NOT // &^

	ADD_ASSIGN // +=
	SUB_ASSIGN // -=
	MUL_ASSIGN // *=
	QUO_ASSIGN // /=
	REM_ASSIGN // %=

	AND_ASSIGN     // &=
	OR_ASSIGN      // |=
	XOR_ASSIGN     // ^=
	SHL_ASSIGN     // <<=
	SHR_ASSIGN     // >>=
	AND_NOT_ASSIGN // &^=

	LAND  // &&
	LOR   // ||
	ARROW // <-
	INC   // ++

        public val kind: Kind by validityAsserted(kind)
        public val operand: KtExpression by validityAsserted(operand)

        public enum class Kind {
            PLUS_ASSIGN, MINUS_ASSIGN, TIMES_ASSIGN, DIV_ASSIGN, REM_ASSIGN
        }

    }

    /**
     * A compound access that read, increment or decrement, and write the computed value back.
     */
    public class IncOrDecOperation(

            KtTokens.MINUSEQ -> KaCompoundAccess.CompoundAssign.Kind.MINUS_ASSIGN
            KtTokens.MULTEQ -> KaCompoundAccess.CompoundAssign.Kind.TIMES_ASSIGN
            KtTokens.PERCEQ -> KaCompoundAccess.CompoundAssign.Kind.REM_ASSIGN
            KtTokens.DIVEQ -> KaCompoundAccess.CompoundAssign.Kind.DIV_ASSIGN
            else -> error("unexpected operator $operationToken")
        }
        return compoundAssignKind
    }

					goto scanAgain
				}
				tok = token.COMMENT
				lit = comment
			} else {
				// division
				tok = s.switch2(token.QUO, token.QUO_ASSIGN)
			}
		case '%':
			tok = s.switch2(token.REM, token.REM_ASSIGN)
		case '^':
			tok = s.switch2(token.XOR, token.XOR_ASSIGN)
		case '<':
			if s.ch == '-' {
				s.next()
				tok = token.ARROW
			} else {

	{token.AND_NOT, "&^", operator},

	{token.ADD_ASSIGN, "+=", operator},
	{token.SUB_ASSIGN, "-=", operator},
	{token.MUL_ASSIGN, "*=", operator},
	{token.QUO_ASSIGN, "/=", operator},
	{token.REM_ASSIGN, "%=", operator},

	{token.AND_ASSIGN, "&=", operator},
	{token.OR_ASSIGN, "|=", operator},
	{token.XOR_ASSIGN, "^=", operator},
	{token.SHL_ASSIGN, "<<=", operator},
	{token.SHR_ASSIGN, ">>=", operator},

	}

	x := p.parseLhsList()

	switch p.tok {
	case
		token.DEFINE, token.ASSIGN, token.ADD_ASSIGN,
		token.SUB_ASSIGN, token.MUL_ASSIGN, token.QUO_ASSIGN,
		token.REM_ASSIGN, token.AND_ASSIGN, token.OR_ASSIGN,
		token.XOR_ASSIGN, token.SHL_ASSIGN, token.SHR_ASSIGN, token.AND_NOT_ASSIGN:
		// assignment statement
		pos, tok := p.pos, p.tok
		p.next()
		y := p.parseRhsList()

	}

	x := p.parseList(false)

	switch p.tok {
	case
		token.DEFINE, token.ASSIGN, token.ADD_ASSIGN,
		token.SUB_ASSIGN, token.MUL_ASSIGN, token.QUO_ASSIGN,
		token.REM_ASSIGN, token.AND_ASSIGN, token.OR_ASSIGN,
		token.XOR_ASSIGN, token.SHL_ASSIGN, token.SHR_ASSIGN, token.AND_NOT_ASSIGN:
		// assignment statement, possibly part of a range clause
		pos, tok := p.pos, p.tok
		p.next()

		{"Position.Offset", Field, 0},
		{"QUO", Const, 0},
		{"QUO_ASSIGN", Const, 0},
		{"RANGE", Const, 0},
		{"RBRACE", Const, 0},
		{"RBRACK", Const, 0},
		{"REM", Const, 0},
		{"REM_ASSIGN", Const, 0},
		{"RETURN", Const, 0},
		{"RPAREN", Const, 0},
		{"SELECT", Const, 0},
		{"SEMICOLON", Const, 0},
		{"SHL", Const, 0},
		{"SHL_ASSIGN", Const, 0},
		{"SHR", Const, 0},

pkg go/token, const QUO_ASSIGN Token
pkg go/token, const RANGE Token
pkg go/token, const RBRACE Token
pkg go/token, const RBRACK Token
pkg go/token, const REM Token
pkg go/token, const REM_ASSIGN Token
pkg go/token, const RETURN Token
pkg go/token, const RPAREN Token
pkg go/token, const SELECT Token
pkg go/token, const SEMICOLON Token
pkg go/token, const SHL Token
pkg go/token, const SHL_ASSIGN Token