Re^3: Perl Parsing Based on Supplied Precedence

With boolean operators there is the same issue. '&&' and 'and' operator has higher precedence that '||' and 'or' (check perlop link on my first post). My approach gives accurate results.
Then 'COND1&&COND2||COND3' is the same as '(COND1&&COND2)||COND3':

$ perl parser.pl
COND1&&COND2||COND3
ORIG:
{
          '&&' => [
                    'COND1',
                    {
                      '||' => [
                                'COND2',
                                'COND3'
                              ]
                    }
                  ]
        }
NEW:
{
          '||' => [
                    {
                      '&&' => [
                                'COND1',
                                'COND2'
                              ]
                    },
                    'COND3'
                  ]
        }
[download]

Comment on Re^3: Perl Parsing Based on Supplied Precedence Download Code

Replies are listed 'Best First'.
Re^4: Perl Parsing Based on Supplied Precedence by protist (Monk) on Nov 07, 2012 at 11:49 UTC
"&&" and "and" have differing precedences. "and" is lower precedence than "&&". The same goes for "\|\|" and "or"; "or" has lower precedence than "\|\|". "and" actually has lower precedence than "\|\|", as I will demonstrate. code with "&&": `perl -e 'if(0&& 0\|\|1){print"hello\n"}'` [download] output: `hello` [download] code with "and": `perl -e 'if(0and 0\|\|1){print"hello\n"}'` [download] (outputs nothing)	[reply] [d/l] [select]
Re^5: Perl Parsing Based on Supplied Precedence by wirito (Acolyte) on Nov 07, 2012 at 12:01 UTC
Yes, you are right. I meant to say: '&&' and 'and' operator has higher precedence than '\|\|' and 'or' respectively English is not my first language as you can notice :)	[reply]
Re^6: Perl Parsing Based on Supplied Precedence by protist (Monk) on Nov 07, 2012 at 12:09 UTC
Ah. After I saw your precedences in your example below, I was confused because you seemed to understand haha. I will note here that I was not attempting to mirror Perl precedences in my example precedence, only create a precedence for testing purposes. Your precedence list is more Perl-like.	[reply]