Assembler.java 文件源码

public static void main(String[] args) {
    if (args.length != 1) {
        printUsage();
        System.exit(1);
    }
    File input = new File(args[0]);
    if (!input.exists()) {
        System.err.println("File " + args[0] + " does not exits!");
        System.exit(2);
    }
    try {
        ANTLRFileStream fileStream = new ANTLRFileStream(args[0]);
        SkinnyLexer lexer = new SkinnyLexer(fileStream);
        CommonTokenStream tokens = new CommonTokenStream(lexer);
        SkinnyParser parser = new SkinnyParser(tokens);
        ParseTree tree = parser.source();
        Assembler asm = new Assembler();
        ParseTreeWalker.DEFAULT.walk(asm, tree);
        ParseTreeWalker.DEFAULT.walk(asm, tree);
        if (!asm.hasErrors)
            System.out.println(asm.getText());
    } catch (IOException e) {
        System.err.println("Could not open file: " + args[0]);
        System.exit(2);
    }

}