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dlmarion pushed a commit to branch main
in repository https://gitbox.apache.org/repos/asf/accumulo-access.git
commit 160484a4b52fc4b609cc4e3ab3392442b8d1598a
Author: Keith Turner <ktur...@apache.org>
AuthorDate: Fri Sep 8 22:26:57 2023 -0400
removes left recursion from specification
---
SPECIFICATION.md | 19 ++++++++-----------
1 file changed, 8 insertions(+), 11 deletions(-)
diff --git a/SPECIFICATION.md b/SPECIFICATION.md
index 3e043f6..62152e2 100644
--- a/SPECIFICATION.md
+++ b/SPECIFICATION.md
@@ -33,15 +33,16 @@ the following [ABNF][1]:
```
access-expression = [expression] ; empty string is a valid access
expression
-expression = and-expression / or-expression
+expression = access-token [and-expression / or-expression]
+expression =/ paren-expression [and-expression / or-expression]
-and-expression = and-expression and-operator and-expression
-and-expression =/ lparen expression rparen
-and-expression =/ access-token
+paren-expression = "(" expression ")"
-or-expression = or-expression or-operator or-expression
-or-expression =/ lparen expression rparen
-or-expression =/ access-token
+and-expression = "&" access-token [and-expression]
+and-expression =/ "&" paren-expression [and-expression]
+
+or-expression = "|" access-token [or-expression]
+or-expression =/ "|" paren-expression [or-expression]
access-token = 1*( ALPHA / DIGIT / "_" / "-" / "." / ":" / slash )
access-token =/ DQUOTE 1*(utf8-subset / escaped) DQUOTE
@@ -49,10 +50,6 @@ access-token =/ DQUOTE 1*(utf8-subset / escaped)
DQUOTE
utf8-subset = %x20-21 / %x23-5B / %5D-7E / UVCHARBEYONDASCII ;
utf8 minus '"' and '\'
escaped = "\" DQUOTE / "\\"
slash = "/"
-or-operator = "|"
-and-operator = "&"
-lparen = "("
-rparen = ")"
```
The definition of utf8 was borrowed from this [ietf document][2]. TODO that
doc defines unicode and not utf8
