[orm] pass generic types

[koplenov]

V version: V 0.4.9 1d9aa88, press to see full `v doctor` output

V full version	V 0.4.9 1d9aa88
OS	windows, Њ ©Єа®б®дв Windows 10 Pro 19045 64-а §ап¤­ п
Processor	28 cpus, 64bit, little endian, Intel(R) Xeon(R) CPU E5-2680 v4 @ 2.40GHz
Memory	20.92GB/31.86GB
V executable	C:\dev\v\v.exe
V last modified time	2025-01-26 10:35:18
V home dir	OK, value: C:\dev\v
VMODULES	OK, value: C:\Users\koplenov.vmodules
VTMP	OK, value: C:\Users\koplenov\AppData\Local\Temp\v_0
Current working dir	OK, value: C:\dev\mam_prod\v\litequeue\litequeue\orm_gen
Git version	git version 2.39.1.windows.1
V git status	Error: fatal: not a git repository (or any of the parent directories): .git
.git/config present	false
cc version	N/A
gcc version	N/A
clang version	N/A
msvc version	N/A
tcc version	tcc version 0.9.27 (x86_64 Windows)
tcc git status	N/A
emcc version	N/A
glibc version	N/A

What did you do?
./v -g -o vdbg cmd/v && ./vdbg .\main.v && C:\dev\mam_prod\v\litequeue\litequeue\orm_gen\main.exe

module main

import db.sqlite

struct Test {
	some_string string
	some_int 	int
}

fn main() {
	db := sqlite.connect("test.db")
	or { panic('Failed to connect to database: ${err}') }

	crete_generick_table[Test](db)
}

fn crete_generick_table[T] (db sqlite.DB) {
	sql db {
		create table T
	} or { panic('Failed to create table: ${err}') }
}

What did you see?

main.v:20:2: error: ORM: the table symbol `T` has to be a struct
   18 |     sql db {
   19 |         create table T
   20 |     } or { panic('Failed to create table: ${err}') }
      |     ^
   21 | }

What did you expect to see?

Must compile and works

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[huly-for-github]

Connected to Huly®: V_0.6-22433

[koplenov]

I think this code should work

module main

import db.sqlite

pub struct Message[T] {
	id       int
	T
}

// usage
struct Payload {
	some_filed_1 string
	some_filed_2 int
}

fn test_handler(message Message[Payload]) ! {
	return error('AAAA')
}

fn main() {
	db_path := 'test_queue.db'
	mut conn := sqlite.connect(db_path) or { panic('Failed to connect to database: ${err}') }

	sql conn {
		create table Message[Payload]
	}!
}

But I get this error:

PS C:\dev\mam_prod\v\litequeue\litequeue2> v run .
queue.v:8:1: error: expecting type declaration
    6 |     id       int
    7 |     T
    8 | }
      | ^
    9 |
   10 | // usage

[koplenov]

this code compiled

module main

import db.sqlite

pub struct Message {
	Payload
	id       int
}

// usage
struct Payload {
	some_filed_1 string
	some_filed_2 int
}

fn test_handler(message Message) ! {
	return error('AAAA')
}

fn main() {
	db_path := 'test_queue.db'
	mut conn := sqlite.connect(db_path) or { panic('Failed to connect to database: ${err}') }

	sql conn {
		create table Message
	}!
}

but at run i get this error:

V panic: result not set (Unknown type 0)
v hash: 1d9aa88
C:/Users/koplenov/AppData/Local/Temp/v_0/litequeue2.01JQ7Q2M4RRXVKNZVPG0HR9JBT.tmp.c:5633: at _v_panic: Backtrace
C:/Users/koplenov/AppData/Local/Temp/v_0/litequeue2.01JQ7Q2M4RRXVKNZVPG0HR9JBT.tmp.c:5599: by panic_result_not_set
C:/Users/koplenov/AppData/Local/Temp/v_0/litequeue2.01JQ7Q2M4RRXVKNZVPG0HR9JBT.tmp.c:10298: by main__main
C:/Users/koplenov/AppData/Local/Temp/v_0/litequeue2.01JQ7Q2M4RRXVKNZVPG0HR9JBT.tmp.c:10375: by wmain
00587578 : by ???
005876db : by ???    
7ffd591f7374 : by ???