Comments (4)
This usage is to register the json_decode
function on the Lua side, so it can be used similarly to the c-json library:
local value = app.json_decode('{"id":123, "name":"foo"}')
print(value.name)
from mlua.
Finally, I solved the problem with a layer of intermediate transformations:
fn main() {
let s = r#"
{
"id": 123,
"name": "foo"
}
"#;
let lua = mlua::Lua::new();
let tmp: serde_json::Value = serde_json::from_str(&s).unwrap();
let value = json_to_lua_value(&lua, tmp).unwrap();
println!("{:?}", value);
}
fn json_to_lua_value(lua: &mlua::Lua, json_value: serde_json::Value) -> mlua::Result<mlua::Value> {
match json_value {
serde_json::Value::Null => Ok(mlua::Value::Nil),
serde_json::Value::Bool(b) => Ok(mlua::Value::Boolean(b)),
serde_json::Value::Number(n) => {
if let Some(i) = n.as_i64() {
Ok(mlua::Value::Integer(i))
} else if let Some(f) = n.as_f64() {
Ok(mlua::Value::Number(f))
} else {
Err(mlua::Error::RuntimeError("Invalid JSON number".into()))
}
}
serde_json::Value::String(s) => Ok(mlua::Value::String(lua.create_string(s)?)),
serde_json::Value::Array(arr) => {
let table = lua.create_table()?;
for (i, v) in arr.iter().enumerate() {
table.set(i + 1, json_to_lua_value(lua, v.clone())?)?;
}
Ok(mlua::Value::Table(table))
}
serde_json::Value::Object(obj) => {
let table = lua.create_table()?;
for (k, v) in obj.iter() {
table.set(k.as_str(), json_to_lua_value(lua, v.clone())?)?;
}
Ok(mlua::Value::Table(table))
}
}
}
from mlua.
Isn't there a better interface for this usage? That is, it can be converted directly, without the need for a middle layer conversion
from mlua.
Isn't there a better interface for this usage? That is, it can be converted directly, without the need for a middle layer conversion
Yes, use can use LuaSerdeExt::to_value
.
An example: https://github.com/mlua-rs/mlua/blob/master/examples/serialize.rs#L49
from mlua.
Related Issues (20)
- Can module mode works with async? HOT 2
- Difficulty creating a wrapper type HOT 1
- Support Audio manipulation HOT 2
- Support UI HOT 2
- Error compiling module to wasm32-unknown-emscripten
- Terra integration?
- Lifetime Issues with Scope HOT 3
- In a module best way to deal with async HOT 4
- Serialization: Recursive table detection yields false positives HOT 1
- Allow setting luau compiler options when loading with `require` HOT 2
- Builds fail with useless errors if user's global Cargo target-dir is changed HOT 3
- Send feature flag HOT 2
- bug: `c_void` not a Sync HOT 3
- Limiting script execution time (a question and a bug report) HOT 2
- Deserialize from a table with function HOT 2
- Async functions from different modules treated as normal coroutines HOT 4
- how to method UserData method self.vars? HOT 2
- table.concat expect got "hello" HOT 2
- Get `registry_id` from `RegistryKey` HOT 3
Recommend Projects
-
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
-
Vue.js
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
-
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
-
TensorFlow
An Open Source Machine Learning Framework for Everyone
-
Django
The Web framework for perfectionists with deadlines.
-
Laravel
A PHP framework for web artisans
-
D3
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
-
Recommend Topics
-
javascript
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
-
web
Some thing interesting about web. New door for the world.
-
server
A server is a program made to process requests and deliver data to clients.
-
Machine learning
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
-
Visualization
Some thing interesting about visualization, use data art
-
Game
Some thing interesting about game, make everyone happy.
Recommend Org
-
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
-
Microsoft
Open source projects and samples from Microsoft.
-
Google
Google ❤️ Open Source for everyone.
-
Alibaba
Alibaba Open Source for everyone
-
D3
Data-Driven Documents codes.
-
Tencent
China tencent open source team.
from mlua.