javascript - PEG.JS parsing logical variable names, its operand and value -

getting terrible headache after hours of trying work. using peg.js parsing input query parsed array. right im trying best grammer. operands , connectors static , generated app.

start = start:(statement)  statement = statement:block_statement* { return statement; }  block_statement = openparen block:block+ closeparen connector:connector block2:(block_statement+ / block+) { return [block, block2]; }                 / openparen block:block+ closeparen connector:connector* !(block_statement / block) { return block; }                 / block:block  block = control:atom operand:operand atom:atom connector:connector* { return { control: control, operand: operand, value: atom, connector: connector[0] || false }; }  atom = _ quote "#"*atom:(word)* quote _ { return atom.tostring(); }  operand     = _ operand:("=" / "in") _      { return operand.tostring(); } connector   = _ connector:("or" / "and") _  { return connector.tostring(); }  word = w:char+ { return w.join(""); } char = c:[^\r\n\t\"]  openparen = _ '(' _ closeparen = _ ')' _ quote = _ quote:("\"" / """ / "\xa0") _ _ = [ \r\n\t]* 

let's assume have following input:

"#ctl 1" = "val 1" or "#ctl 2" = "val 2" 

this parsed - check / works.

[   {       "control": "ctl 1",       "operand": "=",       "value": "val 1",       "connector": "or"   },   {       "control": "ctl 2",       "operand": "=",       "value": "val 2",       "connector": false   } 

]

this 1 should result in same output array - check / works.

("#ctl 1" = "val 1" or "#ctl 2" = "val 2") 

this 1 half way:

("#ctl 1" = "val 1" or "#ctl 2" = "val 2") , "#ctl 3" = "val 3" 

the output like:

[    [       [          {             "control": "ctl 1",             "operand": "=",             "value": "val 1",             "connector": "or"          },          {             "control": "ctl 2",             "operand": "=",             "value": "val 2",             "connector": false          }       ],       [          {             "control": "ctl 3",             "operand": "=",             "value": "val 3",             "connector": false          }       ]    ] ] 

the connector on ctl 2 should "and". there needs kind of ahead (i guess). same one:

("#ctl 1" = "val 1" or "#ctl 2" = "val 2") , ("#ctl 3" = "val 3" or "#ctl 4" = "val 4") 

the complicated stuff starts, wenn mixing different level each other:

("#ctl 1" = "val 1" or ("#ctl 2" = "val 2" , "#ctl 3" = "val 3")) or ("#ctl 4" = "val 4" or "#ctl 5" = "val 5") 

this not work @ all. examples able find either left or right associative. think neither riquired.

do have clue on how solve issue?

i figured out. hope helps someone:

{   function findfirstleftstatement(arr) {     if ( array.isarray(arr) ) {       return findfirstleftstatement(arr[0]["left"]);     } else if ( typeof arr === "object" ) {         return arr;     }   }    function inject(arr, connector) {     findfirstleftstatement(arr)["connector"] = connector;     return arr;   } }  start   = statement*  statement   = left:block connector:connector right:statement      { return { left: left, right: inject(right, connector) }; }   / left: block      { return left; }  block   = popen block:statement* pclose     { return block; }   / block:assignment     { return block; }  assignment   = control:controlatom operand:operand value:valueatom     { return { control: control, operand: operand, value: value }; }  controlatom   = _ quote "#"atom:(word)* quote _      { return atom.tostring(); }  valueatom    = _ quote atom:(word)* quote _      { return atom.tostring(); }  operand   = _ operand:("=" / "in") _     { return operand.tostring(); }  connector     = _ connector:("or" / "and") _       { return connector.tostring(); }  word   = w:character+ { return w.join(""); } character    = c:[^\r\n\t\"] popen   = _ '(' _ pclose   = _ ')' _ quote    = _ quote:("\"" / """ / "\xa0") _ _   = [ \r\n\t]*