de.huberlin.cuneiform.language.IdExpression.java Source code

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Here is the source code for de.huberlin.cuneiform.language.IdExpression.java

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/*******************************************************************************
 * In the Hi-WAY project we propose a novel approach of executing scientific
 * workflows processing Big Data, as found in NGS applications, on distributed
 * computational infrastructures. The Hi-WAY software stack comprises the func-
 * tional workflow language Cuneiform as well as the Hi-WAY ApplicationMaster
 * for Apache Hadoop 2.x (YARN).
 *
 * List of Contributors:
 *
 * Jrgen Brandt (HU Berlin)
 * Marc Bux (HU Berlin)
 * Ulf Leser (HU Berlin)
 *
 * Jrgen Brandt is funded by the European Commission through the BiobankCloud
 * project. Marc Bux is funded by the Deutsche Forschungsgemeinschaft through
 * research training group SOAMED (GRK 1651).
 *
 * Copyright 2014 Humboldt-Universitt zu Berlin
 *
 * 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 de.huberlin.cuneiform.language;

import java.util.LinkedList;
import java.util.List;
import java.util.Map;

import org.antlr.v4.runtime.Token;

public class IdExpression implements Expression {

    private String value;

    public IdExpression(Token idToken) {
        this(idToken.getText());
    }

    public IdExpression(String value) {
        setValue(value);
    }

    public void setValue(String value) {

        if (value == null)
            throw new NullPointerException("Value string must not be null.");

        if (value.isEmpty())
            throw new RuntimeException("Value string must not be empty.");

        this.value = value;
    }

    public String getValue() {
        return value;
    }

    @Override
    public List<Expression> substitute(Map<String, DefMacro> defMacroMap,
            Map<String, List<Expression>> substitMap) {

        List<Expression> result;

        if (substitMap.containsKey(value)) {

            result = substitMap.get(value);
            if (result == null)
                throw new NullPointerException("Substitution expression must not be null.");

            return result;
        }

        result = new LinkedList<>();
        result.add(this);

        return result;
    }

    @Override
    public String toString() {
        return value;
    }

}