--jsonpath io
select ''::jsonpath;
ERROR:  invalid input syntax for type jsonpath: ""
LINE 1: select ''::jsonpath;
               ^
select '$'::jsonpath;
 jsonpath 
----------
 $
(1 row)

select 'strict $'::jsonpath;
 jsonpath 
----------
 strict $
(1 row)

select 'lax $'::jsonpath;
 jsonpath 
----------
 $
(1 row)

select '$.a'::jsonpath;
 jsonpath 
----------
 $."a"
(1 row)

select '$.a.v'::jsonpath;
 jsonpath  
-----------
 $."a"."v"
(1 row)

select '$.a.*'::jsonpath;
 jsonpath 
----------
 $."a".*
(1 row)

select '$.*[*]'::jsonpath;
 jsonpath 
----------
 $.*[*]
(1 row)

select '$.a[*]'::jsonpath;
 jsonpath 
----------
 $."a"[*]
(1 row)

select '$.a[*][*]'::jsonpath;
  jsonpath   
-------------
 $."a"[*][*]
(1 row)

select '$[*]'::jsonpath;
 jsonpath 
----------
 $[*]
(1 row)

select '$[0]'::jsonpath;
 jsonpath 
----------
 $[0]
(1 row)

select '$[*][0]'::jsonpath;
 jsonpath 
----------
 $[*][0]
(1 row)

select '$[*].a'::jsonpath;
 jsonpath 
----------
 $[*]."a"
(1 row)

select '$[*][0].a.b'::jsonpath;
    jsonpath     
-----------------
 $[*][0]."a"."b"
(1 row)

select '$.a.**.b'::jsonpath;
   jsonpath   
--------------
 $."a".**."b"
(1 row)

select '$.a.**{2}.b'::jsonpath;
    jsonpath     
-----------------
 $."a".**{2}."b"
(1 row)

select '$.a.**{2 to 2}.b'::jsonpath;
    jsonpath     
-----------------
 $."a".**{2}."b"
(1 row)

select '$.a.**{2 to 5}.b'::jsonpath;
       jsonpath       
----------------------
 $."a".**{2 to 5}."b"
(1 row)

select '$.a.**{0 to 5}.b'::jsonpath;
       jsonpath       
----------------------
 $."a".**{0 to 5}."b"
(1 row)

select '$.a.**{5 to last}.b'::jsonpath;
        jsonpath         
-------------------------
 $."a".**{5 to last}."b"
(1 row)

select '$.a.**{last}.b'::jsonpath;
      jsonpath      
--------------------
 $."a".**{last}."b"
(1 row)

select '$.a.**{last to 5}.b'::jsonpath;
        jsonpath         
-------------------------
 $."a".**{last to 5}."b"
(1 row)

select '$+1'::jsonpath;
 jsonpath 
----------
 ($ + 1)
(1 row)

select '$-1'::jsonpath;
 jsonpath 
----------
 ($ - 1)
(1 row)

select '$--+1'::jsonpath;
 jsonpath 
----------
 ($ - -1)
(1 row)

select '$.a/+-1'::jsonpath;
   jsonpath   
--------------
 ($."a" / -1)
(1 row)

select '1 * 2 + 4 % -3 != false'::jsonpath;
         jsonpath          
---------------------------
 (1 * 2 + 4 % -3 != false)
(1 row)

select '"\b\f\r\n\t\v\"\''\\"'::jsonpath;
        jsonpath         
-------------------------
 "\b\f\r\n\t\u000b\"'\\"
(1 row)

select '"\x50\u0067\u{53}\u{051}\u{00004C}"'::jsonpath;
 jsonpath 
----------
 "PgSQL"
(1 row)

select '$.foo\x50\u0067\u{53}\u{051}\u{00004C}\t\"bar'::jsonpath;
      jsonpath       
---------------------
 $."fooPgSQL\t\"bar"
(1 row)

select '"\z"'::jsonpath;  -- unrecognized escape is just the literal char
 jsonpath 
----------
 "z"
(1 row)

select '$.g ? ($.a == 1)'::jsonpath;
      jsonpath      
--------------------
 $."g"?($."a" == 1)
(1 row)

select '$.g ? (@ == 1)'::jsonpath;
    jsonpath    
----------------
 $."g"?(@ == 1)
(1 row)

select '$.g ? (@.a == 1)'::jsonpath;
      jsonpath      
--------------------
 $."g"?(@."a" == 1)
(1 row)

select '$.g ? (@.a == 1 || @.a == 4)'::jsonpath;
             jsonpath             
----------------------------------
 $."g"?(@."a" == 1 || @."a" == 4)
(1 row)

select '$.g ? (@.a == 1 && @.a == 4)'::jsonpath;
             jsonpath             
----------------------------------
 $."g"?(@."a" == 1 && @."a" == 4)
(1 row)

select '$.g ? (@.a == 1 || @.a == 4 && @.b == 7)'::jsonpath;
                    jsonpath                    
------------------------------------------------
 $."g"?(@."a" == 1 || @."a" == 4 && @."b" == 7)
(1 row)

select '$.g ? (@.a == 1 || !(@.a == 4) && @.b == 7)'::jsonpath;
                     jsonpath                      
---------------------------------------------------
 $."g"?(@."a" == 1 || !(@."a" == 4) && @."b" == 7)
(1 row)

select '$.g ? (@.a == 1 || !(@.x >= 123 || @.a == 4) && @.b == 7)'::jsonpath;
                             jsonpath                              
-------------------------------------------------------------------
 $."g"?(@."a" == 1 || !(@."x" >= 123 || @."a" == 4) && @."b" == 7)
(1 row)

select '$.g ? (@.x >= @[*]?(@.a > "abc"))'::jsonpath;
               jsonpath                
---------------------------------------
 $."g"?(@."x" >= @[*]?(@."a" > "abc"))
(1 row)

select '$.g ? ((@.x >= 123 || @.a == 4) is unknown)'::jsonpath;
                    jsonpath                     
-------------------------------------------------
 $."g"?((@."x" >= 123 || @."a" == 4) is unknown)
(1 row)

select '$.g ? (exists (@.x))'::jsonpath;
        jsonpath        
------------------------
 $."g"?(exists (@."x"))
(1 row)

select '$.g ? (exists (@.x ? (@ == 14)))'::jsonpath;
             jsonpath             
----------------------------------
 $."g"?(exists (@."x"?(@ == 14)))
(1 row)

select '$.g ? ((@.x >= 123 || @.a == 4) && exists (@.x ? (@ == 14)))'::jsonpath;
                             jsonpath                             
------------------------------------------------------------------
 $."g"?((@."x" >= 123 || @."a" == 4) && exists (@."x"?(@ == 14)))
(1 row)

select '$.g ? (+@.x >= +-(+@.a + 2))'::jsonpath;
              jsonpath              
------------------------------------
 $."g"?(+@."x" >= +(-(+@."a" + 2)))
(1 row)

select '$a'::jsonpath;
 jsonpath 
----------
 $"a"
(1 row)

select '$a.b'::jsonpath;
 jsonpath 
----------
 $"a"."b"
(1 row)

select '$a[*]'::jsonpath;
 jsonpath 
----------
 $"a"[*]
(1 row)

select '$.g ? (@.zip == $zip)'::jsonpath;
         jsonpath          
---------------------------
 $."g"?(@."zip" == $"zip")
(1 row)

select '$.a[1,2, 3 to 16]'::jsonpath;
      jsonpath      
--------------------
 $."a"[1,2,3 to 16]
(1 row)

select '$.a[$a + 1, ($b[*]) to -($[0] * 2)]'::jsonpath;
                jsonpath                
----------------------------------------
 $."a"[$"a" + 1,$"b"[*] to -($[0] * 2)]
(1 row)

select '$.a[$.a.size() - 3]'::jsonpath;
        jsonpath         
-------------------------
 $."a"[$."a".size() - 3]
(1 row)

select 'last'::jsonpath;
ERROR:  LAST is allowed only in array subscripts
LINE 1: select 'last'::jsonpath;
               ^
select '"last"'::jsonpath;
 jsonpath 
----------
 "last"
(1 row)

select '$.last'::jsonpath;
 jsonpath 
----------
 $."last"
(1 row)

select '$ ? (last > 0)'::jsonpath;
ERROR:  LAST is allowed only in array subscripts
LINE 1: select '$ ? (last > 0)'::jsonpath;
               ^
select '$[last]'::jsonpath;
 jsonpath 
----------
 $[last]
(1 row)

select '$[$[0] ? (last > 0)]'::jsonpath;
      jsonpath      
--------------------
 $[$[0]?(last > 0)]
(1 row)

select 'null.type()'::jsonpath;
  jsonpath   
-------------
 null.type()
(1 row)

select '1.type()'::jsonpath;
ERROR:  trailing junk after numeric literal at or near "1.t" of jsonpath input
LINE 1: select '1.type()'::jsonpath;
               ^
select '(1).type()'::jsonpath;
  jsonpath  
------------
 (1).type()
(1 row)

select '1.2.type()'::jsonpath;
   jsonpath   
--------------
 (1.2).type()
(1 row)

select '"aaa".type()'::jsonpath;
   jsonpath   
--------------
 "aaa".type()
(1 row)

select 'true.type()'::jsonpath;
  jsonpath   
-------------
 true.type()
(1 row)

select '$.double().floor().ceiling().abs()'::jsonpath;
              jsonpath              
------------------------------------
 $.double().floor().ceiling().abs()
(1 row)

select '$.keyvalue().key'::jsonpath;
      jsonpath      
--------------------
 $.keyvalue()."key"
(1 row)

select '$.datetime()'::jsonpath;
   jsonpath   
--------------
 $.datetime()
(1 row)

select '$.datetime("datetime template")'::jsonpath;
            jsonpath             
---------------------------------
 $.datetime("datetime template")
(1 row)

select '$.bigint().integer().number().decimal()'::jsonpath;
                jsonpath                 
-----------------------------------------
 $.bigint().integer().number().decimal()
(1 row)

select '$.boolean()'::jsonpath;
  jsonpath   
-------------
 $.boolean()
(1 row)

select '$.date()'::jsonpath;
 jsonpath 
----------
 $.date()
(1 row)

select '$.decimal(4,2)'::jsonpath;
    jsonpath    
----------------
 $.decimal(4,2)
(1 row)

select '$.string()'::jsonpath;
  jsonpath  
------------
 $.string()
(1 row)

select '$.time()'::jsonpath;
 jsonpath 
----------
 $.time()
(1 row)

select '$.time(6)'::jsonpath;
 jsonpath  
-----------
 $.time(6)
(1 row)

select '$.time_tz()'::jsonpath;
  jsonpath   
-------------
 $.time_tz()
(1 row)

select '$.time_tz(4)'::jsonpath;
   jsonpath   
--------------
 $.time_tz(4)
(1 row)

select '$.timestamp()'::jsonpath;
   jsonpath    
---------------
 $.timestamp()
(1 row)

select '$.timestamp(2)'::jsonpath;
    jsonpath    
----------------
 $.timestamp(2)
(1 row)

select '$.timestamp_tz()'::jsonpath;
     jsonpath     
------------------
 $.timestamp_tz()
(1 row)

select '$.timestamp_tz(0)'::jsonpath;
     jsonpath      
-------------------
 $.timestamp_tz(0)
(1 row)

select '$ ? (@ starts with "abc")'::jsonpath;
        jsonpath         
-------------------------
 $?(@ starts with "abc")
(1 row)

select '$ ? (@ starts with $var)'::jsonpath;
         jsonpath         
--------------------------
 $?(@ starts with $"var")
(1 row)

select '$ ? (@ like_regex "(invalid pattern")'::jsonpath;
ERROR:  invalid regular expression: parentheses () not balanced
LINE 1: select '$ ? (@ like_regex "(invalid pattern")'::jsonpath;
               ^
select '$ ? (@ like_regex "pattern")'::jsonpath;
          jsonpath          
----------------------------
 $?(@ like_regex "pattern")
(1 row)

select '$ ? (@ like_regex "pattern" flag "")'::jsonpath;
          jsonpath          
----------------------------
 $?(@ like_regex "pattern")
(1 row)

select '$ ? (@ like_regex "pattern" flag "i")'::jsonpath;
              jsonpath               
-------------------------------------
 $?(@ like_regex "pattern" flag "i")
(1 row)

select '$ ? (@ like_regex "pattern" flag "is")'::jsonpath;
               jsonpath               
--------------------------------------
 $?(@ like_regex "pattern" flag "is")
(1 row)

select '$ ? (@ like_regex "pattern" flag "isim")'::jsonpath;
               jsonpath                
---------------------------------------
 $?(@ like_regex "pattern" flag "ism")
(1 row)

select '$ ? (@ like_regex "pattern" flag "xsms")'::jsonpath;
ERROR:  XQuery "x" flag (expanded regular expressions) is not implemented
LINE 1: select '$ ? (@ like_regex "pattern" flag "xsms")'::jsonpath;
               ^
select '$ ? (@ like_regex "pattern" flag "q")'::jsonpath;
              jsonpath               
-------------------------------------
 $?(@ like_regex "pattern" flag "q")
(1 row)

select '$ ? (@ like_regex "pattern" flag "iq")'::jsonpath;
               jsonpath               
--------------------------------------
 $?(@ like_regex "pattern" flag "iq")
(1 row)

select '$ ? (@ like_regex "pattern" flag "smixq")'::jsonpath;
                jsonpath                 
-----------------------------------------
 $?(@ like_regex "pattern" flag "ismxq")
(1 row)

select '$ ? (@ like_regex "pattern" flag "a")'::jsonpath;
ERROR:  invalid input syntax for type jsonpath
LINE 1: select '$ ? (@ like_regex "pattern" flag "a")'::jsonpath;
               ^
DETAIL:  Unrecognized flag character "a" in LIKE_REGEX predicate.
select '$ < 1'::jsonpath;
 jsonpath 
----------
 ($ < 1)
(1 row)

select '($ < 1) || $.a.b <= $x'::jsonpath;
           jsonpath           
------------------------------
 ($ < 1 || $."a"."b" <= $"x")
(1 row)

select '@ + 1'::jsonpath;
ERROR:  @ is not allowed in root expressions
LINE 1: select '@ + 1'::jsonpath;
               ^
select '($).a.b'::jsonpath;
 jsonpath  
-----------
 $."a"."b"
(1 row)

select '($.a.b).c.d'::jsonpath;
     jsonpath      
-------------------
 $."a"."b"."c"."d"
(1 row)

select '($.a.b + -$.x.y).c.d'::jsonpath;
             jsonpath             
----------------------------------
 ($."a"."b" + -$."x"."y")."c"."d"
(1 row)

select '(-+$.a.b).c.d'::jsonpath;
        jsonpath         
-------------------------
 (-(+$."a"."b"))."c"."d"
(1 row)

select '1 + ($.a.b + 2).c.d'::jsonpath;
           jsonpath            
-------------------------------
 (1 + ($."a"."b" + 2)."c"."d")
(1 row)

select '1 + ($.a.b > 2).c.d'::jsonpath;
           jsonpath            
-------------------------------
 (1 + ($."a"."b" > 2)."c"."d")
(1 row)

select '($)'::jsonpath;
 jsonpath 
----------
 $
(1 row)

select '(($))'::jsonpath;
 jsonpath 
----------
 $
(1 row)

select '((($ + 1)).a + ((2)).b ? ((((@ > 1)) || (exists(@.c)))))'::jsonpath;
                     jsonpath                      
---------------------------------------------------
 (($ + 1)."a" + (2)."b"?(@ > 1 || exists (@."c")))
(1 row)

select '$ ? (@.a < 1)'::jsonpath;
   jsonpath    
---------------
 $?(@."a" < 1)
(1 row)

select '$ ? (@.a < -1)'::jsonpath;
    jsonpath    
----------------
 $?(@."a" < -1)
(1 row)

select '$ ? (@.a < +1)'::jsonpath;
   jsonpath    
---------------
 $?(@."a" < 1)
(1 row)

select '$ ? (@.a < .1)'::jsonpath;
    jsonpath     
-----------------
 $?(@."a" < 0.1)
(1 row)

select '$ ? (@.a < -.1)'::jsonpath;
     jsonpath     
------------------
 $?(@."a" < -0.1)
(1 row)

select '$ ? (@.a < +.1)'::jsonpath;
    jsonpath     
-----------------
 $?(@."a" < 0.1)
(1 row)

select '$ ? (@.a < 0.1)'::jsonpath;
    jsonpath     
-----------------
 $?(@."a" < 0.1)
(1 row)

select '$ ? (@.a < -0.1)'::jsonpath;
     jsonpath     
------------------
 $?(@."a" < -0.1)
(1 row)

select '$ ? (@.a < +0.1)'::jsonpath;
    jsonpath     
-----------------
 $?(@."a" < 0.1)
(1 row)

select '$ ? (@.a < 10.1)'::jsonpath;
     jsonpath     
------------------
 $?(@."a" < 10.1)
(1 row)

select '$ ? (@.a < -10.1)'::jsonpath;
     jsonpath      
-------------------
 $?(@."a" < -10.1)
(1 row)

select '$ ? (@.a < +10.1)'::jsonpath;
     jsonpath     
------------------
 $?(@."a" < 10.1)
(1 row)

select '$ ? (@.a < 1e1)'::jsonpath;
    jsonpath    
----------------
 $?(@."a" < 10)
(1 row)

select '$ ? (@.a < -1e1)'::jsonpath;
    jsonpath     
-----------------
 $?(@."a" < -10)
(1 row)

select '$ ? (@.a < +1e1)'::jsonpath;
    jsonpath    
----------------
 $?(@."a" < 10)
(1 row)

select '$ ? (@.a < .1e1)'::jsonpath;
   jsonpath    
---------------
 $?(@."a" < 1)
(1 row)

select '$ ? (@.a < -.1e1)'::jsonpath;
    jsonpath    
----------------
 $?(@."a" < -1)
(1 row)

select '$ ? (@.a < +.1e1)'::jsonpath;
   jsonpath    
---------------
 $?(@."a" < 1)
(1 row)

select '$ ? (@.a < 0.1e1)'::jsonpath;
   jsonpath    
---------------
 $?(@."a" < 1)
(1 row)

select '$ ? (@.a < -0.1e1)'::jsonpath;
    jsonpath    
----------------
 $?(@."a" < -1)
(1 row)

select '$ ? (@.a < +0.1e1)'::jsonpath;
   jsonpath    
---------------
 $?(@."a" < 1)
(1 row)

select '$ ? (@.a < 10.1e1)'::jsonpath;
    jsonpath     
-----------------
 $?(@."a" < 101)
(1 row)

select '$ ? (@.a < -10.1e1)'::jsonpath;
     jsonpath     
------------------
 $?(@."a" < -101)
(1 row)

select '$ ? (@.a < +10.1e1)'::jsonpath;
    jsonpath     
-----------------
 $?(@."a" < 101)
(1 row)

select '$ ? (@.a < 1e-1)'::jsonpath;
    jsonpath     
-----------------
 $?(@."a" < 0.1)
(1 row)

select '$ ? (@.a < -1e-1)'::jsonpath;
     jsonpath     
------------------
 $?(@."a" < -0.1)
(1 row)

select '$ ? (@.a < +1e-1)'::jsonpath;
    jsonpath     
-----------------
 $?(@."a" < 0.1)
(1 row)

select '$ ? (@.a < .1e-1)'::jsonpath;
     jsonpath     
------------------
 $?(@."a" < 0.01)
(1 row)

select '$ ? (@.a < -.1e-1)'::jsonpath;
     jsonpath      
-------------------
 $?(@."a" < -0.01)
(1 row)

select '$ ? (@.a < +.1e-1)'::jsonpath;
     jsonpath     
------------------
 $?(@."a" < 0.01)
(1 row)

select '$ ? (@.a < 0.1e-1)'::jsonpath;
     jsonpath     
------------------
 $?(@."a" < 0.01)
(1 row)

select '$ ? (@.a < -0.1e-1)'::jsonpath;
     jsonpath      
-------------------
 $?(@."a" < -0.01)
(1 row)

select '$ ? (@.a < +0.1e-1)'::jsonpath;
     jsonpath     
------------------
 $?(@."a" < 0.01)
(1 row)

select '$ ? (@.a < 10.1e-1)'::jsonpath;
     jsonpath     
------------------
 $?(@."a" < 1.01)
(1 row)

select '$ ? (@.a < -10.1e-1)'::jsonpath;
     jsonpath      
-------------------
 $?(@."a" < -1.01)
(1 row)

select '$ ? (@.a < +10.1e-1)'::jsonpath;
     jsonpath     
------------------
 $?(@."a" < 1.01)
(1 row)

select '$ ? (@.a < 1e+1)'::jsonpath;
    jsonpath    
----------------
 $?(@."a" < 10)
(1 row)

select '$ ? (@.a < -1e+1)'::jsonpath;
    jsonpath     
-----------------
 $?(@."a" < -10)
(1 row)

select '$ ? (@.a < +1e+1)'::jsonpath;
    jsonpath    
----------------
 $?(@."a" < 10)
(1 row)

select '$ ? (@.a < .1e+1)'::jsonpath;
   jsonpath    
---------------
 $?(@."a" < 1)
(1 row)

select '$ ? (@.a < -.1e+1)'::jsonpath;
    jsonpath    
----------------
 $?(@."a" < -1)
(1 row)

select '$ ? (@.a < +.1e+1)'::jsonpath;
   jsonpath    
---------------
 $?(@."a" < 1)
(1 row)

select '$ ? (@.a < 0.1e+1)'::jsonpath;
   jsonpath    
---------------
 $?(@."a" < 1)
(1 row)

select '$ ? (@.a < -0.1e+1)'::jsonpath;
    jsonpath    
----------------
 $?(@."a" < -1)
(1 row)

select '$ ? (@.a < +0.1e+1)'::jsonpath;
   jsonpath    
---------------
 $?(@."a" < 1)
(1 row)

select '$ ? (@.a < 10.1e+1)'::jsonpath;
    jsonpath     
-----------------
 $?(@."a" < 101)
(1 row)

select '$ ? (@.a < -10.1e+1)'::jsonpath;
     jsonpath     
------------------
 $?(@."a" < -101)
(1 row)

select '$ ? (@.a < +10.1e+1)'::jsonpath;
    jsonpath     
-----------------
 $?(@."a" < 101)
(1 row)

-- numeric literals
select '0'::jsonpath;
 jsonpath 
----------
 0
(1 row)

select '00'::jsonpath;
ERROR:  trailing junk after numeric literal at or near "00" of jsonpath input
LINE 1: select '00'::jsonpath;
               ^
select '0755'::jsonpath;
ERROR:  syntax error at end of jsonpath input
LINE 1: select '0755'::jsonpath;
               ^
select '0.0'::jsonpath;
 jsonpath 
----------
 0.0
(1 row)

select '0.000'::jsonpath;
 jsonpath 
----------
 0.000
(1 row)

select '0.000e1'::jsonpath;
 jsonpath 
----------
 0.00
(1 row)

select '0.000e2'::jsonpath;
 jsonpath 
----------
 0.0
(1 row)

select '0.000e3'::jsonpath;
 jsonpath 
----------
 0
(1 row)

select '0.0010'::jsonpath;
 jsonpath 
----------
 0.0010
(1 row)

select '0.0010e-1'::jsonpath;
 jsonpath 
----------
 0.00010
(1 row)

select '0.0010e+1'::jsonpath;
 jsonpath 
----------
 0.010
(1 row)

select '0.0010e+2'::jsonpath;
 jsonpath 
----------
 0.10
(1 row)

select '.001'::jsonpath;
 jsonpath 
----------
 0.001
(1 row)

select '.001e1'::jsonpath;
 jsonpath 
----------
 0.01
(1 row)

select '1.'::jsonpath;
 jsonpath 
----------
 1
(1 row)

select '1.e1'::jsonpath;
 jsonpath 
----------
 10
(1 row)

select '1a'::jsonpath;
ERROR:  trailing junk after numeric literal at or near "1a" of jsonpath input
LINE 1: select '1a'::jsonpath;
               ^
select '1e'::jsonpath;
ERROR:  trailing junk after numeric literal at or near "1e" of jsonpath input
LINE 1: select '1e'::jsonpath;
               ^
select '1.e'::jsonpath;
ERROR:  trailing junk after numeric literal at or near "1.e" of jsonpath input
LINE 1: select '1.e'::jsonpath;
               ^
select '1.2a'::jsonpath;
ERROR:  trailing junk after numeric literal at or near "1.2a" of jsonpath input
LINE 1: select '1.2a'::jsonpath;
               ^
select '1.2e'::jsonpath;
ERROR:  trailing junk after numeric literal at or near "1.2e" of jsonpath input
LINE 1: select '1.2e'::jsonpath;
               ^
select '1.2.e'::jsonpath;
 jsonpath  
-----------
 (1.2)."e"
(1 row)

select '(1.2).e'::jsonpath;
 jsonpath  
-----------
 (1.2)."e"
(1 row)

select '1e3'::jsonpath;
 jsonpath 
----------
 1000
(1 row)

select '1.e3'::jsonpath;
 jsonpath 
----------
 1000
(1 row)

select '1.e3.e'::jsonpath;
  jsonpath  
------------
 (1000)."e"
(1 row)

select '1.e3.e4'::jsonpath;
  jsonpath   
-------------
 (1000)."e4"
(1 row)

select '1.2e3'::jsonpath;
 jsonpath 
----------
 1200
(1 row)

select '1.2e3a'::jsonpath;
ERROR:  trailing junk after numeric literal at or near "1.2e3a" of jsonpath input
LINE 1: select '1.2e3a'::jsonpath;
               ^
select '1.2.e3'::jsonpath;
  jsonpath  
------------
 (1.2)."e3"
(1 row)

select '(1.2).e3'::jsonpath;
  jsonpath  
------------
 (1.2)."e3"
(1 row)

select '1..e'::jsonpath;
 jsonpath 
----------
 (1)."e"
(1 row)

select '1..e3'::jsonpath;
 jsonpath 
----------
 (1)."e3"
(1 row)

select '(1.).e'::jsonpath;
 jsonpath 
----------
 (1)."e"
(1 row)

select '(1.).e3'::jsonpath;
 jsonpath 
----------
 (1)."e3"
(1 row)

select '1?(2>3)'::jsonpath;
  jsonpath   
-------------
 (1)?(2 > 3)
(1 row)

-- nondecimal
select '0b100101'::jsonpath;
 jsonpath 
----------
 37
(1 row)

select '0o273'::jsonpath;
 jsonpath 
----------
 187
(1 row)

select '0x42F'::jsonpath;
 jsonpath 
----------
 1071
(1 row)

-- error cases
select '0b'::jsonpath;
ERROR:  trailing junk after numeric literal at or near "0b" of jsonpath input
LINE 1: select '0b'::jsonpath;
               ^
select '1b'::jsonpath;
ERROR:  trailing junk after numeric literal at or near "1b" of jsonpath input
LINE 1: select '1b'::jsonpath;
               ^
select '0b0x'::jsonpath;
ERROR:  syntax error at end of jsonpath input
LINE 1: select '0b0x'::jsonpath;
               ^
select '0o'::jsonpath;
ERROR:  trailing junk after numeric literal at or near "0o" of jsonpath input
LINE 1: select '0o'::jsonpath;
               ^
select '1o'::jsonpath;
ERROR:  trailing junk after numeric literal at or near "1o" of jsonpath input
LINE 1: select '1o'::jsonpath;
               ^
select '0o0x'::jsonpath;
ERROR:  syntax error at end of jsonpath input
LINE 1: select '0o0x'::jsonpath;
               ^
select '0x'::jsonpath;
ERROR:  trailing junk after numeric literal at or near "0x" of jsonpath input
LINE 1: select '0x'::jsonpath;
               ^
select '1x'::jsonpath;
ERROR:  trailing junk after numeric literal at or near "1x" of jsonpath input
LINE 1: select '1x'::jsonpath;
               ^
select '0x0y'::jsonpath;
ERROR:  syntax error at end of jsonpath input
LINE 1: select '0x0y'::jsonpath;
               ^
-- underscores
select '1_000_000'::jsonpath;
 jsonpath 
----------
 1000000
(1 row)

select '1_2_3'::jsonpath;
 jsonpath 
----------
 123
(1 row)

select '0x1EEE_FFFF'::jsonpath;
 jsonpath  
-----------
 518979583
(1 row)

select '0o2_73'::jsonpath;
 jsonpath 
----------
 187
(1 row)

select '0b10_0101'::jsonpath;
 jsonpath 
----------
 37
(1 row)

select '1_000.000_005'::jsonpath;
  jsonpath   
-------------
 1000.000005
(1 row)

select '1_000.'::jsonpath;
 jsonpath 
----------
 1000
(1 row)

select '.000_005'::jsonpath;
 jsonpath 
----------
 0.000005
(1 row)

select '1_000.5e0_1'::jsonpath;
 jsonpath 
----------
 10005
(1 row)

-- error cases
select '_100'::jsonpath;
ERROR:  syntax error at end of jsonpath input
LINE 1: select '_100'::jsonpath;
               ^
select '100_'::jsonpath;
ERROR:  trailing junk after numeric literal at or near "100_" of jsonpath input
LINE 1: select '100_'::jsonpath;
               ^
select '100__000'::jsonpath;
ERROR:  syntax error at end of jsonpath input
LINE 1: select '100__000'::jsonpath;
               ^
select '_1_000.5'::jsonpath;
ERROR:  syntax error at end of jsonpath input
LINE 1: select '_1_000.5'::jsonpath;
               ^
select '1_000_.5'::jsonpath;
ERROR:  trailing junk after numeric literal at or near "1_000_" of jsonpath input
LINE 1: select '1_000_.5'::jsonpath;
               ^
select '1_000._5'::jsonpath;
ERROR:  trailing junk after numeric literal at or near "1_000._" of jsonpath input
LINE 1: select '1_000._5'::jsonpath;
               ^
select '1_000.5_'::jsonpath;
ERROR:  trailing junk after numeric literal at or near "1_000.5_" of jsonpath input
LINE 1: select '1_000.5_'::jsonpath;
               ^
select '1_000.5e_1'::jsonpath;
ERROR:  trailing junk after numeric literal at or near "1_000.5e" of jsonpath input
LINE 1: select '1_000.5e_1'::jsonpath;
               ^
-- underscore after prefix not allowed in JavaScript (but allowed in SQL)
select '0b_10_0101'::jsonpath;
ERROR:  syntax error at end of jsonpath input
LINE 1: select '0b_10_0101'::jsonpath;
               ^
select '0o_273'::jsonpath;
ERROR:  syntax error at end of jsonpath input
LINE 1: select '0o_273'::jsonpath;
               ^
select '0x_42F'::jsonpath;
ERROR:  syntax error at end of jsonpath input
LINE 1: select '0x_42F'::jsonpath;
               ^
-- test non-error-throwing API
SELECT str as jsonpath,
       pg_input_is_valid(str,'jsonpath') as ok,
       errinfo.sql_error_code,
       errinfo.message,
       errinfo.detail,
       errinfo.hint
FROM unnest(ARRAY['$ ? (@ like_regex "pattern" flag "smixq")'::text,
                  '$ ? (@ like_regex "pattern" flag "a")',
                  '@ + 1',
                  '00',
                  '1a']) str,
     LATERAL pg_input_error_info(str, 'jsonpath') as errinfo;
                 jsonpath                  | ok | sql_error_code |                                message                                |                          detail                          | hint 
-------------------------------------------+----+----------------+-----------------------------------------------------------------------+----------------------------------------------------------+------
 $ ? (@ like_regex "pattern" flag "smixq") | t  |                |                                                                       |                                                          | 
 $ ? (@ like_regex "pattern" flag "a")     | f  | 42601          | invalid input syntax for type jsonpath                                | Unrecognized flag character "a" in LIKE_REGEX predicate. | 
 @ + 1                                     | f  | 42601          | @ is not allowed in root expressions                                  |                                                          | 
 00                                        | f  | 42601          | trailing junk after numeric literal at or near "00" of jsonpath input |                                                          | 
 1a                                        | f  | 42601          | trailing junk after numeric literal at or near "1a" of jsonpath input |                                                          | 
(5 rows)