nl_tokens: . nud Null denotation . fud First null denotation . led Left denotation lbp Left binding power rbp Right binding power They are elements of the parsing method called Top Down Operator Precedence .
pl_tokens: function expression ( rbp , initial ) { var left ; if ( nexttoken . id === '(end)' ) { error ( "Unexpected early end of program." , token ) ; } advance ( ) ; if ( option . safe && typeof predefined [ token . value ] === 'boolean' && ( nexttoken . id !== '(' && nexttoken . id !== '.' ) ) { warning ( 'ADsafe violation.' , token ) ; } if ( initial ) { anonname = 'anonymous' ; funct [ '(verb)' ] = token . value ; } if ( initial === true && token . fud ) { left = token . fud ( ) ; } else { if ( token . nud ) { left = <mask> . nud ( ) ; } else { if ( nexttoken . type === '(number)' && token . id === '.' ) { warning ( "A leading decimal point can be confused with a dot: '.{a}'." , token , nexttoken . value ) ; advance ( ) ; return token ; } else { error ( "Expected an identifier and instead saw '{a}'." , token , token . id ) ; } } while ( rbp < nexttoken . lbp ) { advance ( ) ; if ( token . led ) { left = token . led ( left ) ; } else { error ( "Expected an operator and instead saw '{a}'." , token , token . id ) ; } } } return left ; }