Add grammar image.

Made with https://jacquev6.github.io/DrawGrammar/
2023-09-06 18:24:27 -07:00 · 2023-09-06 18:24:27 -07:00 · 463ed04e05
parent 68488cc9d2
commit 463ed04e05
2 changed files with 4 additions and 1 deletions
--- a/docs/html/images/grammar.png
+++ b/docs/html/images/grammar.png
--- a/docs/source/Thun.md
+++ b/docs/source/Thun.md
@ -13,7 +13,7 @@ notation, Booleans `true` and `false`, lists enclosed by square brackets
    
    term ::= integer | bool | '[' joy ']' | symbol
    
-    integer ::= [ '-' ] ('0'...'9')+
+    integer ::= 0 | [ '-' ] ('1'...'9') ('0'...'9')*
    
    bool ::= 'true' | 'false'
    
@ -29,6 +29,9 @@ respective Boolean values.
 That's it.  That's the whole of the grammar.


+![Thun Grammar Railroad Diagram](./images/grammar.png)
+
+
 ## Types

 The original Joy has several datatypes (such as strings and sets)