/**
* Copyright (c) 2012-2016 André Bargull
* Alle Rechte vorbehalten / All Rights Reserved. Use is subject to license terms.
*
* <https://github.com/anba/es6draft>
*/
package com.github.anba.es6draft.ast;
/**
* <h1>12 ECMAScript Language: Expressions</h1>
* <ul>
* <li>12.14 Assignment Operators
* </ul>
*/
public final class AssignmentExpression extends Expression {
public enum Operator {
ASSIGN("="), ASSIGN_ADD("+="), ASSIGN_SUB("-="), ASSIGN_MUL("*="), ASSIGN_DIV("/="),
ASSIGN_MOD("%="), ASSIGN_SHL("<<="), ASSIGN_SHR(">>="), ASSIGN_USHR(">>>="),
ASSIGN_BITAND("&="), ASSIGN_BITOR("|="), ASSIGN_BITXOR("^="), ASSIGN_EXP("**=");
private String name;
private Operator(String name) {
this.name = name;
}
/**
* Returns the assignment operator name.
*
* @return the operator name
*/
public String getName() {
// TODO: This is not a 'name'.
return name;
}
}
private final Operator operator;
private final LeftHandSideExpression left;
private final Expression right;
private boolean completion = true;
public AssignmentExpression(Operator operator, LeftHandSideExpression left, Expression right) {
super(left.getBeginPosition(), right.getEndPosition());
this.operator = operator;
this.left = left;
this.right = right;
}
/**
* Returns the assignment operator.
*
* @return the assignment operator
*/
public Operator getOperator() {
return operator;
}
/**
* Returns the left-hand side assignment target.
*
* @return the assignment target
*/
public LeftHandSideExpression getLeft() {
return left;
}
/**
* Returns the right-hand side value expression.
*
* @return the value expression
*/
public Expression getRight() {
return right;
}
@Override
public Expression emptyCompletion() {
completion = false;
return this;
}
/**
* Returns {@code true} if the completion value is used.
*
* @return {@code true} if the completion value is used
* @see #emptyCompletion()
*/
public boolean hasCompletion() {
return completion;
}
@Override
public <R, V> R accept(NodeVisitor<R, V> visitor, V value) {
return visitor.visit(this, value);
}
@Override
public <V> int accept(IntNodeVisitor<V> visitor, V value) {
return visitor.visit(this, value);
}
@Override
public <V> void accept(VoidNodeVisitor<V> visitor, V value) {
visitor.visit(this, value);
}
}