public static int Parse (string s, string/*!*/ filename, out /*maybe null*/ Program program, bool useBaseName=false) /* throws System.IO.IOException */ {
Contract.Requires(s != null);
Contract.Requires(filename != null);
byte[]/*!*/ buffer = cce.NonNull(UTF8Encoding.Default.GetBytes(s));
MemoryStream ms = new MemoryStream(buffer,false);
Errors errors = new Errors();
Scanner scanner = new Scanner(ms, errors, filename, useBaseName);
Parser parser = new Parser(scanner, errors, false);
parser.Parse();
if (parser.errors.count == 0)
{
program = parser.Pgm;
program.ProcessDatatypeConstructors();
return 0;
}
else
{
program = null;
return parser.errors.count;
}
}
public Parser(Scanner/*!*/ scanner, Errors/*!*/ errors, bool disambiguation)
: this(scanner, errors)
{
// initialize readonly fields
Pgm = new Program();
dummyExpr = new LiteralExpr(Token.NoToken, false);
dummyCmd = new AssumeCmd(Token.NoToken, dummyExpr);
dummyBlock = new Block(Token.NoToken, "dummyBlock", new List<Cmd>(), new ReturnCmd(Token.NoToken));
dummyType = new BasicType(Token.NoToken, SimpleType.Bool);
dummyExprSeq = new List<Expr> ();
dummyTransferCmd = new ReturnCmd(Token.NoToken);
dummyStructuredCmd = new BreakCmd(Token.NoToken, null);
}
/*--------------------------------------------------------------------------*/
public Parser(Scanner/*!*/ scanner, Errors/*!*/ errors) {
this.scanner = scanner;
this.errors = errors;
Token/*!*/ tok = new Token();
tok.val = "";
this.la = tok;
this.t = new Token(); // just to satisfy its non-null constraint
}
