/*
 * Copyright 2002-2019 the original author or authors.
 *
 * 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
 *
 *      https://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 org.springframework.expression.spel.ast;

import org.springframework.asm.MethodVisitor;
import org.springframework.expression.spel.CodeFlow;
import org.springframework.expression.spel.support.BooleanTypedValue;

Represents the literal values TRUE and FALSE.
Author:Andy Clement
Since:3.0
/** * Represents the literal values {@code TRUE} and {@code FALSE}. * * @author Andy Clement * @since 3.0 */
public class BooleanLiteral extends Literal { private final BooleanTypedValue value; public BooleanLiteral(String payload, int startPos, int endPos, boolean value) { super(payload, startPos, endPos); this.value = BooleanTypedValue.forValue(value); this.exitTypeDescriptor = "Z"; } @Override public BooleanTypedValue getLiteralValue() { return this.value; } @Override public boolean isCompilable() { return true; } @Override public void generateCode(MethodVisitor mv, CodeFlow cf) { if (this.value == BooleanTypedValue.TRUE) { mv.visitLdcInsn(1); } else { mv.visitLdcInsn(0); } cf.pushDescriptor(this.exitTypeDescriptor); } }