// Make sure we've consumed everything.
	if (theLexer.getLexemeType() != EOF_LEXEME) {
	    throw new IllegalArgumentException();
	}

	// Save the pieces. Parameters are not in ascending order yet.
	int n = thePieces.size();
	myPieces = (String[]) thePieces.toArray (new String [n]);

	// Sort the parameters into ascending order using an insertion sort.
	int i, j;
	String temp;
	for (i = 4; i < n; i += 2) {
	    j = 2;
	    while (j < i && myPieces[j].compareTo (myPieces[i]) <= 0) {
		j += 2;
	    }
	    while (j < i) {
		temp = myPieces[j];
		myPieces[j] = myPieces[i];
		myPieces[i] = temp;
		temp = myPieces[j+1];
		myPieces[j+1] = myPieces[i+1];
		myPieces[i+1] = temp;
		j += 2;
	    }
	}
    }
}