json: not parsing embedded struct

[esquerbatua]

Describe the bug

Try to parse a json to a struct with another embedded.

Reproduction Steps

module main

import json

struct Json2 {
	inner []f64
}

struct Json {
	Json2
	test f64
}

fn main() {
	str:= '{
		"inner": [1, 2, 3, 4, 5],
		"test": 1.0
	}'
	data := json.decode(Json, str) or {
		eprintln('Failed to decode json, error: ${err}')
		return
	}
	println(data)
	assert data.inner.len == 5
	assert data.inner[0] == 1.0
	assert data.inner[4] == 5.0
	assert data.test == 1.0
}

Expected Behavior

Run correctly, with all of the data parsed

Current Behavior

Json{
    Json2: Json2{
        inner: []
    }
    test: 1.0
}
break.v:24: FAIL: fn main.main: assert data.inner.len == 5
   left value: data.inner.len = 0
  right value: 5
V panic: Assertion failed...
v hash: 5f6015f
/tmp/v_1000/break.01J83016DQE40509DMP512ZNQ5.tmp.c:7493: at _v_panic: Backtrace
/tmp/v_1000/break.01J83016DQE40509DMP512ZNQ5.tmp.c:13964: by main__main
/tmp/v_1000/break.01J83016DQE40509DMP512ZNQ5.tmp.c:14058: by main

Possible Solution

No response

Additional Information/Context

No response

V version

V full version: V 0.4.7 01fd719.263ba23

Environment details (OS name and version, etc.)

V full version: V 0.4.7 01fd719.263ba23
OS: linux, Ubuntu 24.04.1 LTS
Processor: 16 cpus, 64bit, little endian, AMD Ryzen 7 7840HS w/ Radeon 780M Graphics

vexe: /home/esquerbatua/git/v/v
vexe mtime: 2024-09-18 16:39:38

vroot: OK, value: /home/esquerbatua/git/v
VMODULES: OK, value: /home/esquerbatua/.vmodules
VTMP: OK, value: /tmp/v_1000

Git version: git version 2.43.0
Git vroot status: weekly.2024.37-25-g263ba232
.git/config present: true

CC version: cc (Ubuntu 13.2.0-23ubuntu4) 13.2.0
thirdparty/tcc status: thirdparty-linux-amd64 0134e9b9

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[esquerbatua]

This works if you create a field in the json with the name of the embedded element

module main

import json

struct Json2 {
	inner []f64
}

struct Json {
	Json2
	test f64
}

fn main() {
	str:= '{
		"Json2": {
			"inner": [1.0, 2.0, 3.0, 4.0, 5.0]
		},
		"test": 1.0
	}'
	data := json.decode(Json, str) or {
		eprintln('Failed to decode json, error: ${err}')
		return
	}
	println(data)
	assert data.inner.len == 5
	assert data.inner[0] == 1.0
	assert data.inner[4] == 5.0
	assert data.test == 1.0
}

[zhwei820]

kind of different with in GO