nanoverse.compiler.pipeline.interpret.visitors.NanoPrimitiveBooleanVisitor.java Source code

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Here is the source code for nanoverse.compiler.pipeline.interpret.visitors.NanoPrimitiveBooleanVisitor.java

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/*
 * Nanoverse: a declarative agent-based modeling language for natural and
 * social science.
 *
 * Copyright (c) 2015 David Bruce Borenstein and Nanoverse, LLC.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of 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.
 *
 * This program 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.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>
 */

package nanoverse.compiler.pipeline.interpret.visitors;

import nanoverse.compiler.pipeline.interpret.nanosyntax.NanosyntaxParser.BoolPrimitiveContext;
import nanoverse.compiler.pipeline.interpret.nodes.ASTNode;
import org.antlr.v4.runtime.CommonToken;
import org.antlr.v4.runtime.Token;
import org.antlr.v4.runtime.misc.NotNull;
import org.antlr.v4.runtime.tree.ParseTree;
import org.slf4j.*;

import java.util.stream.Stream;

/**
 * Created by dbborens on 2/15/15.
 */
public class NanoPrimitiveBooleanVisitor extends AbstractNanoNodeVisitor {

    public static final String IDENTIFIER = "ConstantBoolean";
    private final Logger logger = LoggerFactory.getLogger(NanoPrimitiveBooleanVisitor.class);

    @Override
    public ASTNode visitBoolPrimitive(@NotNull BoolPrimitiveContext ctx) {
        if (ctx.getChildCount() != 1) {
            throw new IllegalStateException("Internal error: malformed primitive");
        }

        Token token = ctx.getStart();
        int lineNumber = token.getLine();

        ParseTree child = ctx.getChild(0);
        verifyPayload(child, CommonToken.class);

        String valueText = child.getText();
        ASTNode valueNode = new ASTNode(valueText, Stream.empty(), lineNumber);
        Stream<ASTNode> children = Stream.of(valueNode);
        ASTNode container = new ASTNode(IDENTIFIER, children, lineNumber);

        logger.debug("Translated literal \"{}\" as a Boolean primitive.", valueText);
        return container;
    }

}