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Venice, a sandboxed Lisp implemented in Java.
There is a newer version: 1.12.34
/*   __    __         _
 *   \ \  / /__ _ __ (_) ___ ___
 *    \ \/ / _ \ '_ \| |/ __/ _ \
 *     \  /  __/ | | | | (_|  __/
 *      \/ \___|_| |_|_|\___\___|
 *
 *
 * Copyright 2017-2024 Venice
 *
 * 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 com.github.jlangch.venice.impl.util.markdown.block;

import com.github.jlangch.venice.impl.reader.LineReader;
import com.github.jlangch.venice.impl.util.StringUtil;


public class BlockParser {

    public BlockParser(final String text) {
        reader = new LineReader(text);
    }


    public Blocks parse() {
        while(!reader.eof()) {
            String line = reader.peek();

            if (StringUtil.isBlank(line)) {
                reader.consume(); // skip blank lines
            }
            else if (TitleBlockParser.isBlockStart(line)) {
                final TitleBlockParser p = new TitleBlockParser(reader);
                final TitleBlock block = p.parse();
                if (!block.isEmpty()) {
                    blocks.add(block);
                }
            }
            else if (CodeBlockParser.isBlockStart(line)) {
                final CodeBlockParser p = new CodeBlockParser(reader);
                final CodeBlock block = p.parse();
                if (!block.isEmpty()) {
                    blocks.add(block);
                }
            }
            else if (ListBlockParser.isBlockStart(line)) {
                final ListBlockParser p = new ListBlockParser(reader);
                final ListBlock block = p.parse();
                if (!block.isEmpty()) {
                    blocks.add(block);
                }
            }
            else if (TableBlockParser.isBlockStart(line)) {
                final TableBlockParser p = new TableBlockParser(reader);
                final TableBlock block = p.parse();
                if (!block.isEmpty()) {
                    blocks.add(block);
                }
            }
            else {
                final TextBlockParser p = new TextBlockParser(reader);
                final TextBlock block = p.parse();
                if (!block.isEmpty()) {
                    blocks.add(block);
                }
            }
        }

        return blocks;
    }


    private final LineReader reader;
    private final Blocks blocks = new Blocks();
}