We like parsed SQL or PL/SQL blocks...

You need to write function that return list of literals indices from source block, excluding "in" comments, OR return empty list if no literals found.

input:
some fragment of sql or pl/sql code

output:
list of literals indices [(start, end), ...] OR empty list

Sample:
```
get_textliterals("'this' is sample") -> [(0,6)]
get_textliterals("'this' is sample 'too'") -> [(0, 6), (15, 20)]
```

Text literal: any text between single quotes
Sample:
```
  s := 'i am literal'
```
Single-line comment: any text started with "--" 
Sample:
```
  a := 1;
  -- this is single-line comment
```
Multy-line comment: any text between /* */
```
  a := 1;
  /*
  this is long multy-line comment
  */
```

Note: 
1) handle single quote inside literal
```
  s := 'we can use quote '' in literal'
```  
2) multy-line literal
```
 s := '
 this is literal too
 ';
```
3) skip literal inside comment
```
s := 'test'; --when comment started - this is not 'literal'
```
4) any unclosed literal should be closed with last symbol of the source fragment
```
s := 'test
```
There is one literal in this code: "'test"

```python

USER_FILENAME = "<user_code>"
import sys, json, builtins
import math, heapq, bisect, itertools, functools, collections, statistics, fractions, decimal, operator, array, random, re, string, os, pathlib
try:
    import resource as _res
except Exception:
    _res = None
from collections import Counter, defaultdict, deque, OrderedDict
from functools import lru_cache, reduce
from itertools import accumulate, permutations, combinations, product
from math import gcd, ceil, floor, sqrt
from decimal import Decimal
try:
    from typing import *
except Exception:
    pass
try:
    sys.setrecursionlimit(1_000_000)
except Exception:
    pass
try:
    import site as _site
    try:
        _sys_sites = _site.getsitepackages() if hasattr(_site, "getsitepackages") else []
        for _p in _sys_sites:
            if _p and _p not in sys.path:
                sys.path.append(_p)
    except Exception:
        pass
    try:
        _usp = _site.getusersitepackages()
        if isinstance(_usp, str):
            _usp = [_usp]
        for _p in _usp:
            if _p and _p not in sys.path:
                sys.path.append(_p)
    except Exception:
        pass
except Exception:
    pass

def _disabled_input(*args, **kwargs):
    raise RuntimeError("input() is disabled in callable mode")
builtins.input = _disabled_input

ns = {"__name__": "__judge__"}  # prevent if __name__ == "__main__" blocks
for _k, _v in list(globals().items()):
    if not _k.startswith("_"):
        ns[_k] = _v
_CODE = 'def get_textliterals(pv_code):\n\n    l_list = []\n    l_switch = "empty"\n    \n    for i in range(len(pv_code)):\n    \n        if pv_code[i] == "\'" and pv_code[i:i+2] != "\'\'" and pv_code[i-1:i+1] != "\'\'":\n            if l_switch == "empty":\n                l_begin = i\n                l_switch = "begin"\n            elif l_switch == "begin":\n                l_list.append((l_begin,i+1))\n                l_switch = "empty"\n        elif pv_code[i:i+2] == "--":\n            if l_switch != "begin" and l_switch != "rem2":\n                l_switch = "rem1"\n        elif pv_code[i:i+2] == "/*":\n            if l_switch != "begin" and l_switch != "rem1":\n                l_switch = "rem2"\n        elif pv_code[i:i+2] == "*/":\n            if l_switch == "rem2":\n                l_switch = "empty"\n        elif pv_code[i] == "\\n":\n            if l_switch == "rem1":\n                l_switch = "empty"\n    if l_switch == "begin":\n        l_list.append((l_begin,i+1))\n                \n                \n    return l_list        '
_co = compile(_CODE, USER_FILENAME, "exec")
exec(_co, ns, ns)

_target = None
_fn_name = 'get_textliterals'
if _fn_name:
    if "Solution" in ns:
        try:
            _obj = ns["Solution"]()
            if hasattr(_obj, _fn_name):
                _target = getattr(_obj, _fn_name)
        except Exception:
            _target = None
    if _target is None and _fn_name in ns and callable(ns[_fn_name]):
        _target = ns[_fn_name]
# Fallback: if there's exactly one user-defined function, use it
if _target is None:
    _cands = [v for k, v in ns.items() if callable(v) and getattr(v, "__module__", "") in ("__judge__", "__main__")]
    _user_funcs = [c for c in _cands if getattr(c, "__name__", "").startswith("_") is False]
    if len(_user_funcs) == 1:
        _target = _user_funcs[0]
if _target is None:
    raise RuntimeError(f"Could not resolve callable '{_fn_name}'")

_raw = sys.stdin.read().strip()
if _raw:
    _parsed = json.loads(_raw)
    if isinstance(_parsed, dict):
        _kwargs = _parsed.get("kwargs", {})
        _args = _parsed.get("args", [])
    else:
        _args, _kwargs = _parsed, {}
else:
    _args, _kwargs = [], {}
if not isinstance(_args, (list, tuple)):
    _args = [_args]
_res = _target(*_args, **_kwargs)
try:
    sys.stdout.write(repr(_res) + "\n")
except Exception:
    pass

```

Measured memory_bytes: 5986