diff options
Diffstat (limited to 'grammar-ll1.txt')
-rw-r--r-- | grammar-ll1.txt | 19 |
1 files changed, 8 insertions, 11 deletions
diff --git a/grammar-ll1.txt b/grammar-ll1.txt index 9487bd1..23c1abf 100644 --- a/grammar-ll1.txt +++ b/grammar-ll1.txt @@ -12,12 +12,14 @@ context-free syntax STATEMENT ::= ID ":=" EXP context-free syntax - EXP ::= ID - EXP ::= NAT - EXP ::= EXP "+" EXP {left} - EXP ::= EXP "*" EXP {left} - EXP ::= "-" EXP - EXP ::= "(" EXP ")" + EXP ::= EXP "+" PROD-EXP + EXP ::= PROD-EXP + PROD-EXP ::= EXP "*" SINGLE-EXP + PROD-EXP ::= SINGLE-EXP + SINGLE-EXP ::= "-" EXP + SINGLE-EXP ::= ID + SINGLE-EXP ::= NAT + SINGLE-EXP ::= "(" EXP ")" lexical syntax ID ::= [a-z] ID' @@ -34,8 +36,3 @@ lexical syntax LAYOUT ::= " " LAYOUT LAYOUT ::= "\n" LAYOUT LAYOUT ::= - -context-free priorities - EXP ::= "-" EXP > - EXP ::= EXP "*" EXP > - EXP ::= EXP "+" EXP |