Add the framework for character classes.

Now we have the potential to recognize character classes.  But the
most important task for us now is to experiment with ((B)RN)GLR
algorithms, so we leave the character classes at the present state for
a moment.

1 files changed, 25 insertions, 9 deletions

diff --git a/src/test.txt b/src/test.txt
index be9b3ba..27af3ad 100644
--- a/src/test.txt
+++ b/src/test.txt
@@ -1,9 +1,25 @@
-S: A A LONG C 奎佑
-A: B B B
-B: A
-A:
-LONG: B A
-C: B C A
-B: B B
-奎佑: "handsome"
-A: A B A
+S: S "+" T
+S: T
+T: T "*" F
+T: F
+F: "(" S ")"
+F: "0"
+F: "1"
+F: "2"
+F: "3"
+F: "4"
+F: "5"
+F: "6"
+F: "7"
+F: "8"
+F: "9"
+F: "0" F
+F: "1" F
+F: "2" F
+F: "3" F
+F: "4" F
+F: "5" F
+F: "6" F
+F: "7" F
+F: "8" F
+F: "9" F