Talk:Compiler/syntax analyzer
Unary operator precedence
In the grmmmar, the definition of primary is:
primary = Identifier | Integer | '(' expr ')' | ('+' | '-' | '!') expr ;
which makes the unary operators the lowest precedence? Should that be:
primary = Identifier | Integer | '(' expr ')' | ('+' | '-' | '!') primary ;
which would be more usual? If I read it correctly, the C reference implementation does treat unary operators as highest precedence. --Tigerofdarkness (talk) 08:46, 23 October 2016 (UTC)
You are correct. Thanks for catching this! I have modified the grammar. --Ed Davis (talk) 11:03, 23 October 2016 (UTC)
prt_list production incorrect
I think the prt_list production should be:
prt_list = (String | expr) { ',' (String | expr) } ;
because | is lower precedence than concatenation.