public static void main(String args[]) throws Exception {
Yylex l = null;
parser p;
try {
if (args.length == 0) l = new Yylex(System.in);
else l = new Yylex(new FileReader(args[0]));
} catch (FileNotFoundException e) {
System.err.println("Error: File not found: " + args[0]);
System.exit(1);
}
p = new parser(l);
/* The default parser is the first-defined entry point. */
/* You may want to change this. Other options are: */
/* */
try {
pl.edu.mimuw.cloudatlas.interpreter.query.Absyn.Program parse_tree = p.pProgram();
System.out.println();
System.out.println("Parse Succesful!");
System.out.println();
System.out.println("[Abstract Syntax]");
System.out.println();
System.out.println(PrettyPrinter.show(parse_tree));
System.out.println();
System.out.println("[Linearized Tree]");
System.out.println();
System.out.println(PrettyPrinter.print(parse_tree));
} catch (Throwable e) {
System.err.println(
"At line " + String.valueOf(l.line_num()) + ", near \"" + l.buff() + "\" :");
System.err.println(" " + e.getMessage());
System.exit(1);
}
}
public String printString() {
return (PrettyPrinter.print(
rs,
new Printer<Object>() {
@Override
public String print(Object obj) {
return obj.toString();
}
}));
}
public void print() {
System.out.println(
PrettyPrinter.print(
rs,
new Printer<Object>() {
@Override
public String print(Object obj) {
return obj.toString();
}
}));
}
public static void main(String args[]) {
try {
System.out.println("Type in a tiny exp folowed by one or two Ctrl-d's:");
Parser p = new Parser(new Lexer(new PushbackReader(new InputStreamReader(System.in), 1024)));
Start tree = p.parse();
NewEval.replaceUminus(tree);
/* pretty-print */
System.out.println("\nThe result of evaluating:");
PrettyPrinter.print(tree);
/* pre-eval to replace uminus */
/* evaluate */
System.out.print("\nis: ");
PrettyPrinter.print(Evaluator.eval(tree));
System.out.println("\n");
} catch (Exception e) {
System.out.println(e);
}
}
/** Pretty-printing */
public void pretty(PrettyPrinter pp) {
pp.print("STORE " + x);
}
