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.