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generate an abstract semantic graph from a Shift AST

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/*
 * Copyright 2016 Shape Security, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.shapesecurity.shift.semantics.asg.BinaryOperation;

import com.shapesecurity.shift.semantics.asg.NodeWithValue;
import org.jetbrains.annotations.NotNull;

public class Equality extends BinaryOperation {
	@NotNull
	public final Operator operator;
	@NotNull
	public final NodeWithValue left;
	@NotNull
	public final NodeWithValue right;

	public Equality(@NotNull Operator operator, @NotNull NodeWithValue left, @NotNull NodeWithValue right) {
		this.operator = operator;
		this.left = left;
		this.right = right;
	}

	public enum Operator implements BinaryOperator { // TODO could get by with as few as one of these
		Eq("=="),
		Neq("!="),
		StrictEq("==="),
		StrictNeq("!==");

		@NotNull
		private final String name;

		Operator(@NotNull String name) {
			this.name = name;
		}
	}
}