/*

 * Copyright (C) 2007-2010 Júlio Vilmar Gesser.

 * Copyright (C) 2011, 2013-2021 The JavaParser Team.

 *

 * This file is part of JavaParser.

 *

 * JavaParser can be used either under the terms of

 * a) the GNU Lesser General Public License as published by

 *     the Free Software Foundation, either version 3 of the License, or

 *     (at your option) any later version.

 * b) the terms of the Apache License

 *

 * You should have received a copy of both licenses in LICENCE.LGPL and

 * LICENCE.APACHE. Please refer to those files for details.

 *

 * JavaParser is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU Lesser General Public License for more details.

 */

package com.github.javaparser.ast.stmt;

import com.github.javaparser.TokenRange;

import com.github.javaparser.ast.AllFieldsConstructor;

import com.github.javaparser.ast.Generated;

import com.github.javaparser.ast.Node;

import com.github.javaparser.ast.expr.BooleanLiteralExpr;

import com.github.javaparser.ast.expr.Expression;

import com.github.javaparser.ast.observer.ObservableProperty;

import com.github.javaparser.ast.visitor.CloneVisitor;

import com.github.javaparser.ast.visitor.GenericVisitor;

import com.github.javaparser.ast.visitor.VoidVisitor;

import com.github.javaparser.metamodel.AssertStmtMetaModel;

import com.github.javaparser.metamodel.JavaParserMetaModel;

import com.github.javaparser.metamodel.OptionalProperty;

import java.util.Optional;

import java.util.function.Consumer;

import static com.github.javaparser.utils.Utils.assertNotNull;

/**

 * A usage of the keyword "assert"

 * <br>In {@code assert dead : "Wasn't expecting to be dead here";} the check is "dead" and the message is the string.

 * @author Julio Vilmar Gesser

 */

public class AssertStmt extends Statement {

    private Expression check;

    @OptionalProperty

    private Expression message;

    public AssertStmt() {

        this(null, new BooleanLiteralExpr(), null);

    }

    public AssertStmt(final Expression check) {

        this(null, check, null);

    }

    @AllFieldsConstructor

    public AssertStmt(final Expression check, final Expression message) {

        this(null, check, message);

    }

    /**

     * This constructor is used by the parser and is considered private.

     */

    @Generated("com.github.javaparser.generator.core.node.MainConstructorGenerator")

    public AssertStmt(TokenRange tokenRange, Expression check, Expression message) {

        super(tokenRange);

        setCheck(check);

        setMessage(message);

        customInitialization();

    }

    @Override

    @Generated("com.github.javaparser.generator.core.node.AcceptGenerator")

    public <R, A> R accept(final GenericVisitor<R, A> v, final A arg) {

        return v.visit(this, arg);

    }

    @Override

    @Generated("com.github.javaparser.generator.core.node.AcceptGenerator")

    public <A> void accept(final VoidVisitor<A> v, final A arg) {

        v.visit(this, arg);

    }

    @Generated("com.github.javaparser.generator.core.node.PropertyGenerator")

    public Expression getCheck() {

        return check;

    }

    @Generated("com.github.javaparser.generator.core.node.PropertyGenerator")

    public Optional<Expression> getMessage() {

        return Optional.ofNullable(message);

    }

    @Generated("com.github.javaparser.generator.core.node.PropertyGenerator")

    public AssertStmt setCheck(final Expression check) {

        assertNotNull(check);

        if (check == this.check) {

            return this;

        }

        notifyPropertyChange(ObservableProperty.CHECK, this.check, check);

        if (this.check != null)

            this.check.setParentNode(null);

        this.check = check;

        setAsParentNodeOf(check);

        return this;

    }

    /**

     * Sets the message

     *

     * @param message the message, can be null

     * @return this, the AssertStmt

     */

    @Generated("com.github.javaparser.generator.core.node.PropertyGenerator")

    public AssertStmt setMessage(final Expression message) {

        if (message == this.message) {

            return this;

        }

        notifyPropertyChange(ObservableProperty.MESSAGE, this.message, message);

        if (this.message != null)

            this.message.setParentNode(null);

        this.message = message;

        setAsParentNodeOf(message);

        return this;

    }

    @Override

    @Generated("com.github.javaparser.generator.core.node.RemoveMethodGenerator")

    public boolean remove(Node node) {

        if (node == null)

            return false;

        if (message != null) {

            if (node == message) {

                removeMessage();

                return true;

            }

        }

        return super.remove(node);

    }

    @Generated("com.github.javaparser.generator.core.node.RemoveMethodGenerator")

    public AssertStmt removeMessage() {

        return setMessage((Expression) null);

    }

    @Override

    @Generated("com.github.javaparser.generator.core.node.CloneGenerator")

    public AssertStmt clone() {

        return (AssertStmt) accept(new CloneVisitor(), null);

    }

    @Override

    @Generated("com.github.javaparser.generator.core.node.GetMetaModelGenerator")

    public AssertStmtMetaModel getMetaModel() {

        return JavaParserMetaModel.assertStmtMetaModel;

    }

    @Override

    @Generated("com.github.javaparser.generator.core.node.ReplaceMethodGenerator")

    public boolean replace(Node node, Node replacementNode) {

        if (node == null)

            return false;

        if (node == check) {

            setCheck((Expression) replacementNode);

            return true;

        }

        if (message != null) {

            if (node == message) {

                setMessage((Expression) replacementNode);

                return true;

            }

        }

        return super.replace(node, replacementNode);

    }

    @Override

    @Generated("com.github.javaparser.generator.core.node.TypeCastingGenerator")

    public boolean isAssertStmt() {

        return true;

    }

    @Override

    @Generated("com.github.javaparser.generator.core.node.TypeCastingGenerator")

    public AssertStmt asAssertStmt() {

        return this;

    }

    @Override

    @Generated("com.github.javaparser.generator.core.node.TypeCastingGenerator")

    public void ifAssertStmt(Consumer<AssertStmt> action) {

        action.accept(this);

    }

    @Override

    @Generated("com.github.javaparser.generator.core.node.TypeCastingGenerator")

    public Optional<AssertStmt> toAssertStmt() {

        return Optional.of(this);

    }

}