static internal void printArgInfo()
{
MeanCS.print("Command line arguments:");
MeanCS.print(" [cmd] -i read standard input, eg. [cmd] -i < ../test_script.txt");
MeanCS.print(" [cmd] -t run default test");
MeanCS.print(" [cmd] \"[string]\" parse [string]");
}
private static MNode lexInput(MInputStream input)
{
ByteAutomata ba = new ByteAutomata();
automata = ba;
defineTransitions(ba);
ba.next((byte)1); // set first state
root = new MNode(null, 0, "<ROOT>");
currentExpr = root;
currentBlock = null;
currentToken = null;
lastStart = 0;
ba.run(input);
ba.step((byte)' '); // ended cleanly: last white space
if (currentBlock != null)
{
MeanCS.print("closing parenthesis missing at the end");
ba.ok = false;
}
if (!ba.ok)
{
ba.printError();
root = null;
return(null);
}
MeanCS.verbose("\nFINISHED!");
return(root);
}
public static void Main(string [] args)
{
try
{
MicroLexer.printTitle("Java");
if (args.Length == 1)
{
MNode root = null;
if (args[0].Equals("-i"))
{
MicroLexer.printStdinInfo();
string input = "";
while (true)
{
string line = Console.ReadLine();
if (line == null)
{
break;
}
input += line + '\n';
}
root = MicroLexer.lex(input);
}
else if (args[0].Equals("-t"))
{
root = MicroLexer.lex("abc 123 (def 456 [ghi])");
}
else
{
root = MicroLexer.lex(args[0]);
}
MeanCS.print("TOKEN TREE:");
if (root != null)
{
root.printTree(true);
}
}
else
{
MicroLexer.printArgInfo();
}
}
catch (Exception e)
{
MeanCS.print(e.ToString());
}
}
public void printError()
{
MeanCS.printn("ERROR: parser state [").print(stateNames[(int)currentState]).print("]").print("\n");
MeanCS.printn("Line ").print(lineNumber).print(": \"");
// print nearby code
int start = index - 1;
while (start > 0 && index - start < BUFFER_SIZE && (char)buffer[start % BUFFER_SIZE] != '\n')
{
start--;
}
while (++start < index)
{
MeanCS.verbosen((char)(buffer[start % BUFFER_SIZE]));
}
MeanCS.print("\"");
}
static internal void printStdinInfo()
{
MeanCS.print("Hit Ctrl-Z (Windows) or ^D (Linux/Mac) at the start of a line and press enter to finish.");
MeanCS.print("Read from standard input...");
}
static internal void printTitle(string s)
{
MeanCS.print("\n ByteAutomata (c) 2020, Meanwhale");
MeanCS.print(" https://github.com/Meanwhale/ByteAutomata\n");
}