org.drools.mvel.parser.ast.expr.DrlxExpression Maven / Gradle / Ivy

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Parsing of constraints in LHS
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/*
 * Copyright 2019 Red Hat, Inc. and/or its affiliates.
 *
 * 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 org.drools.mvel.parser.ast.expr;

import com.github.javaparser.TokenRange;
import com.github.javaparser.ast.Node;
import com.github.javaparser.ast.expr.Expression;
import com.github.javaparser.ast.expr.SimpleName;
import com.github.javaparser.ast.visitor.GenericVisitor;
import com.github.javaparser.ast.visitor.VoidVisitor;
import org.drools.mvel.parser.ast.visitor.DrlGenericVisitor;
import org.drools.mvel.parser.ast.visitor.DrlVoidVisitor;

public class DrlxExpression extends Node {

    private final SimpleName bind;
    private final Expression expr;

    public DrlxExpression(SimpleName bind, Expression expr) {
        super(bind != null
                      ? new TokenRange(
                              bind.getTokenRange().orElseThrow(() -> new IllegalStateException("Bind doesn't contain token range! " + bind)).getBegin(),
                              expr.getTokenRange().orElseThrow(() -> new IllegalStateException("Expression doesn't contain token range! " + expr.toString())).getEnd())
                      : expr.getTokenRange().orElseThrow(() -> new IllegalStateException("Expression doesn't contain token range! " + expr.toString())));
        this.bind = bind;
        this.expr = expr;
    }

    @Override
    public  R accept(GenericVisitor v, A arg) {
        return ((DrlGenericVisitor)v).visit(this, arg);
    }

    @Override
    public  void accept(VoidVisitor v, A arg) {
        ((DrlVoidVisitor)v).visit(this, arg);
    }

    public SimpleName getBind() {
        return bind;
    }

    public Expression getExpr() {
        return expr;
    }
}
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