Declaration of invalid collections

[GreasySlug]

Describe the bug?

The following collections allow elements to be declared by using whitespace
Different error occurs instead of error due to delimitation

• array
• tuple
• dict
• set
• record

But these are syntax error

Reproducible code

[1 2 3]
(1 2 3)
{"a": 1 "b": 2 "c": 3}
{1 2 3}
{name = "John" age = 21}

Expected result

syntax error
needs comma or semicolon

Actual result

Error[#0000]: File <stdin>, line 1, 

1 | [1 2 3]
  :       -

SyntaxError: invalid syntax

>>> (1 2 3)
Error[#0000]: File <stdin>, line 1, 

1 | (1 2 3)
  :       -

SyntaxError: invalid syntax

>>> {"a": 1 "b": 2}
Error[#3374]: File <stdin>, line 1, 

1 | {"a": 1 "b": 2}
  :              -

SyntaxError: invalid syntax

Error[#0000]: File <stdin>, line 1, 

1 | {"a": 1 "b": 2}
  :               -

SyntaxError: invalid syntax

>>> {name = "John" age = 21}
Record(name='John', age=21)

Additional context

When I look at how it is parsed using cargo dprs, we see that each syntax is parsed differently, and a patch is needed for each of them.

Erg version

Erg 0.6.0-beta.3

Python version

python3.10.8

OS

Windows 10