/*

 * 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.SimpleName;

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.JavaParserMetaModel;

import com.github.javaparser.metamodel.LabeledStmtMetaModel;

import java.util.Optional;

import java.util.function.Consumer;

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

/**

 * A statement that is labeled, like {@code label123: println("continuing");}

 *

 * @author Julio Vilmar Gesser

 */

public class LabeledStmt extends Statement {

    private SimpleName label;

    private Statement statement;

    public LabeledStmt() {

        this(null, new SimpleName(), new ReturnStmt());

    }

    public LabeledStmt(final String label, final Statement statement) {

        this(null, new SimpleName(label), statement);

    }

    @AllFieldsConstructor

    public LabeledStmt(final SimpleName label, final Statement statement) {

        this(null, label, statement);

    }

    /**

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

     */

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

    public LabeledStmt(TokenRange tokenRange, SimpleName label, Statement statement) {

        super(tokenRange);

        setLabel(label);

        setStatement(statement);

        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 Statement getStatement() {

        return statement;

    }

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

    public LabeledStmt setStatement(final Statement statement) {

        assertNotNull(statement);

        if (statement == this.statement) {

            return this;

        }

        notifyPropertyChange(ObservableProperty.STATEMENT, this.statement, statement);

        if (this.statement != null)

            this.statement.setParentNode(null);

        this.statement = statement;

        setAsParentNodeOf(statement);

        return this;

    }

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

    public SimpleName getLabel() {

        return label;

    }

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

    public LabeledStmt setLabel(final SimpleName label) {

        assertNotNull(label);

        if (label == this.label) {

            return this;

        }

        notifyPropertyChange(ObservableProperty.LABEL, this.label, label);

        if (this.label != null)

            this.label.setParentNode(null);

        this.label = label;

        setAsParentNodeOf(label);

        return this;

    }

    @Override

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

    public boolean remove(Node node) {

        if (node == null)

            return false;

        return super.remove(node);

    }

    @Override

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

    public LabeledStmt clone() {

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

    }

    @Override

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

    public LabeledStmtMetaModel getMetaModel() {

        return JavaParserMetaModel.labeledStmtMetaModel;

    }

    @Override

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

    public boolean replace(Node node, Node replacementNode) {

        if (node == null)

            return false;

        if (node == label) {

            setLabel((SimpleName) replacementNode);

            return true;

        }

        if (node == statement) {

            setStatement((Statement) replacementNode);

            return true;

        }

        return super.replace(node, replacementNode);

    }

    @Override

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

    public boolean isLabeledStmt() {

        return true;

    }

    @Override

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

    public LabeledStmt asLabeledStmt() {

        return this;

    }

    @Override

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

    public void ifLabeledStmt(Consumer<LabeledStmt> action) {

        action.accept(this);

    }

    @Override

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

    public Optional<LabeledStmt> toLabeledStmt() {

        return Optional.of(this);

    }

}