arangosh> var stmt = db._createStatement("FOR doc IN @@collection FILTER doc.foo == @bar RETURN doc");
arangosh> stmt.parse();
{ 
  "bindVars" : [ 
    "bar", 
    "@collection" 
  ], 
  "collections" : [ ], 
  "ast" : [ 
    { 
      "type" : "root", 
      "subNodes" : [ 
        { 
          "type" : "for", 
          "subNodes" : [ 
            { 
              "type" : "variable", 
              "name" : "doc", 
              "id" : 0 
            }, 
            { 
              "type" : "parameter", 
              "name" : "@collection" 
            } 
          ] 
        }, 
        { 
          "type" : "filter", 
          "subNodes" : [ 
            { 
              "type" : "compare ==", 
              "subNodes" : [ 
                { 
                  "type" : "attribute access", 
                  "name" : "foo", 
                  "subNodes" : [ 
                    { 
                      "type" : "reference", 
                      "name" : "doc", 
                      "id" : 0 
                    } 
                  ] 
                }, 
                { 
                  "type" : "parameter", 
                  "name" : "bar" 
                } 
              ] 
            } 
          ] 
        }, 
        { 
          "type" : "return", 
          "subNodes" : [ 
            { 
              "type" : "reference", 
              "name" : "doc", 
              "id" : 0 
            } 
          ] 
        } 
      ] 
    } 
  ] 
}