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/*
 * dex2jar - Tools to work with android .dex and java .class files
 * Copyright (c) 2009-2014 Panxiaobo
 * 
 * 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.googlecode.d2j.jasmin;

import org.antlr.runtime.ANTLRReaderStream;
import org.antlr.runtime.ANTLRStringStream;
import org.antlr.runtime.CommonTokenStream;
import org.antlr.runtime.RecognitionException;
import org.objectweb.asm.tree.ClassNode;

import java.io.*;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;

public class Jasmins {
    public static ClassNode parse(Path file) throws IOException {
        try (BufferedReader bufferedReader = Files.newBufferedReader(file, StandardCharsets.UTF_8)) {
            return parse(file.toString(), bufferedReader);
        } catch (RecognitionException e) {
            throw new RuntimeException("Fail to assemble " + file, e);
        }
    }

    public static ClassNode parse(String fileName, Reader bufferedReader) throws IOException, RecognitionException {
        ANTLRStringStream is = new ANTLRReaderStream(bufferedReader);
        is.name = fileName;
        JasminLexer lexer = new JasminLexer(is);
        CommonTokenStream ts = new CommonTokenStream(lexer);
        JasminParser parser = new JasminParser(ts);
        return parser.parse();
    }

    public static ClassNode parse(String fileName, InputStream is) throws IOException, RecognitionException {
        return parse(fileName, new InputStreamReader(is, "UTF-8"));
    }
}