org.ballerinalang.langserver.util.references.ReferencesSubRuleParser.java Source code

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Here is the source code for org.ballerinalang.langserver.util.references.ReferencesSubRuleParser.java

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/*
 * Copyright (c) 2019, WSO2 Inc. (http://wso2.com) All Rights Reserved.
 *
 * 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.ballerinalang.langserver.util.references;

import org.antlr.v4.runtime.ANTLRInputStream;
import org.antlr.v4.runtime.CommonTokenStream;
import org.ballerinalang.langserver.compiler.LSContext;
import org.eclipse.lsp4j.Position;
import org.wso2.ballerinalang.compiler.parser.antlr4.BallerinaLexer;
import org.wso2.ballerinalang.compiler.parser.antlr4.BallerinaParser;

/**
 * Parse a given compilation unit with the {@link ReferenceFindTokenErrorStrategy} in order to capture the token.
 *
 * @since 0.993.0
 */
public class ReferencesSubRuleParser {
    private ReferencesSubRuleParser() {
    }

    public static void parserCompilationUnit(String content, LSContext context, Position position) {

        // TODO: 1/23/19 Check what happens when the content is not a valid compilation unit and when there are errors
        ANTLRInputStream inputStream = new ANTLRInputStream(content);
        BallerinaLexer lexer = new BallerinaLexer(inputStream);
        CommonTokenStream commonTokenStream = new CommonTokenStream(lexer);
        BallerinaParser parser = new BallerinaParser(commonTokenStream);
        parser.setErrorHandler(new ReferenceFindTokenErrorStrategy(context, position));

        parser.compilationUnit();
    }
}