package de.dhbwstuttgart.parser;

import de.dhbwstuttgart.environment.CompilationEnvironment;
import de.dhbwstuttgart.parser.SyntaxTreeGenerator.SyntaxTreeGenerator;
import de.dhbwstuttgart.parser.antlr.Java17Lexer;
import de.dhbwstuttgart.parser.antlr.Java17Parser;
import de.dhbwstuttgart.parser.scope.JavaClassRegistry;
import de.dhbwstuttgart.syntaxtree.SourceFile;

import org.antlr.v4.runtime.CharStream;
import org.antlr.v4.runtime.CharStreams;
import org.antlr.v4.runtime.CommonTokenStream;

import java.io.*;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.List;

public class JavaTXParser {
    public static Java17Parser.SourceFileContext parse(File source) throws IOException, java.lang.ClassNotFoundException {
        InputStream stream = new FileInputStream(source);
        // DEPRECATED: ANTLRInputStream input = new ANTLRInputStream(stream);
        CharStream input = CharStreams.fromStream(stream);
        Java17Lexer lexer = new Java17Lexer(input);
        CommonTokenStream tokens = new CommonTokenStream(lexer);
        Java17Parser parser = new Java17Parser(tokens);
        return parser.sourceFile();
        /*
         * SyntaxTreeGenerator generator = new SyntaxTreeGenerator(environment.getRegistry(source)); return generator.convert(tree);
         */
    }

    /*
     * Für das Typsystem ist es notwendig, dass sich der Source in einer Datei befindet: public SourceFile parse(String fileContent) throws IOException, java.lang.ClassNotFoundException { return this.parse(new ByteArrayInputStream(fileContent.getBytes(StandardCharsets.UTF_8))); }
     */
}