Wrong error when declaring an attribute right after an incomplete variable declaration

[davidebeatrici]

Describe the bug

error: unexpected token `:`, expecting `]`
    3 | test_var = "Test"
    4 | 
    5 | @[table: 'users']
      |        ^
    6 | struct User {
    7 |     name string

Reproduction Steps

#!/usr/bin/env v

test_var = "Test"

@[table: 'users']
struct User {
  name string
}

Expected Behavior

The compiler should warn about the variable declaration being incomplete.

Current Behavior

The compiler errors out with a wrong explanation.

Possible Solution

No response

Additional Information/Context

No response

V version

0.4.9

Environment details (OS name and version, etc.)

V full version: V 0.4.9 3953445
OS: linux, "OpenMandriva Lx 24.12"
Processor: 24 cpus, 64bit, little endian, AMD Ryzen 9 5900X 12-Core Processor

getwd: /home/user
vexe: /usr/libexec/vlang/v
vexe mtime: 2025-01-04 02:37:39

vroot: NOT writable, value: /usr/libexec/vlang
VMODULES: OK, value: /home/user/.vmodules
VTMP: OK, value: /tmp/v_1001

Git version: git version 2.47.1
Git vroot status: Error: fatal: not a git repository (or any of the parent directories): .git
.git/config present: false

CC version: OpenMandriva 19.1.6-1 clang version 19.1.6 (/builddir/build/BUILD/llvm-19.1.6-build/llvm-project-llvmorg-19.1.6/clang 1cc1c8b2641ccba94c7b90b5e4c4e500729f7556)
emcc version: N/A
thirdparty/tcc: N/A

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_{Huly®: V_0.6-21827}

[jorgeluismireles]

Seems there is a reminiscence about syntax for script mode. Next code in the playground:

x = 'v'
struct Str { }

produces the message:

Running code...
Can't run code. The server returned an error:
code.v:1:1: notice: script mode started here
    1 | x = 'v'
      | ^
    2 | struct Str { }
code.v:2:8: error: all definitions must occur before code in script mode
    1 | x = 'v'
    2 | struct Str { }
      |        ~~~
Exited with error status 1
Please try again.

If we move the struct before the x then the compiler request to change the syntax:

undefined ident: `x` (use `:=` to declare a variable)

The REPL also enforces the syntax:

 \   \  /   /  |  Welcome to the V REPL (for help with V itself, type  exit , then run  v help ).
  \   \/   /   |  Note: the REPL is highly experimental. For best V experience, use a text editor, 
   \      /    |  save your code in a  main.v  file and execute:  v run main.v 
    \    /     |  V 0.4.9 7078a2e . Use  list  to see the accumulated program so far.
     \__/      |  Use Ctrl-C or  exit  to exit, or  help  to see other available commands.

>>> x = 'v'
error: undefined ident: `x` (use `:=` to declare a variable)
    5 | import math
    6 | 
    7 | x = 'v'
      | ^
>>> x := 'v'
>>>