/*
 * Copyright (c) 2015-2018 Dzikoysk
 *
 * 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.panda_lang.panda.framework.design.interpreter.token;

import java.util.List;

public interface TokenizedSource {

    TokenizedSource subSource(int fromIndex, int toIndex);

    List<TokenRepresentation> getTokensRepresentations();

    TokenRepresentation[] toArray();

    default int size() {
        return getTokensRepresentations().size();
    }

    default TokenRepresentation getFirst() {
        return size() > 1 ? get(0) : null;
    }

    default TokenRepresentation getLast() {
        return getLast(0);
    }

    default TokenRepresentation getLast(int i) {
        int index = size() - i - 1;
        return index > -1 ? get(index) : null;
    }

    default void addToken(TokenRepresentation tokenRepresentation) {
        getTokensRepresentations().add(tokenRepresentation);
    }

    default Token getToken(int id) {
        TokenRepresentation tokenRepresentation = get(id);

        if (tokenRepresentation == null) {
            return null;
        }

        return tokenRepresentation.getToken();
    }

    default TokenRepresentation get(int id) {
        if (id >= size() || id < 0) {
            return null;
        }

        return getTokensRepresentations().get(id);
    }

    default String asString() {
        StringBuilder node = new StringBuilder();

        for (TokenRepresentation representation : getTokensRepresentations()) {
            Token token = representation.getToken();
            node.append(token.getTokenValue());
        }

        return node.toString();
    }

}

@@ -1029,17 +1029,17 @@
 ize() %3E 
-1
+0
  ? get(0

Fix TokenizedSource#getFirst