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use crate::{Context, Error, Result, Value};
use alloc::{boxed::Box, ffi::CString};
use rmquickjs_sys::JSGCRef;
/// Represents a JavaScript object.
pub struct Object<'ctx> {
gc_ref: Box<JSGCRef>,
ctx: &'ctx Context,
}
impl Into<Value> for Object<'_> {
fn into(self) -> Value {
Value::from_raw(self.gc_ref.val)
}
}
impl<'ctx> Drop for Object<'ctx> {
fn drop(&mut self) {
unsafe {
rmquickjs_sys::JS_DeleteGCRef(self.ctx.as_ptr(), &mut *self.gc_ref);
}
}
}
impl<'ctx> Object<'ctx> {
pub(crate) fn new(gc_ref: Box<JSGCRef>, ctx: &'ctx Context) -> Self {
Object { gc_ref, ctx }
}
/// Gets the property of the object.
///
/// ## Examples
///
/// ```rust
/// use rmquickjs::Context;
///
/// let ctx = Context::new();
/// let obj = ctx
/// .eval("({ a: 1, b: 2 })")
/// .unwrap()
/// .to_object(&ctx)
/// .unwrap();
/// let value = obj.get("a").unwrap();
/// assert_eq!(value, ctx.new_i32(1));
/// let value = obj.get("b").unwrap();
/// assert_eq!(value, ctx.new_i32(2));
/// ```
pub fn get(&self, key: &str) -> Result<Value> {
unsafe {
let value = Value::from_raw(rmquickjs_sys::JS_GetPropertyStr(
self.ctx.as_ptr(),
self.gc_ref.val.into(),
CString::new(key).unwrap().as_ptr(),
));
if value.is_exception() {
Err(Error {
message: value.to_string(self.ctx),
exception: value,
})
} else {
Ok(value)
}
}
}
/// Sets the property of the object.
///
/// ## Examples
////
/// ```rust
/// use rmquickjs::Context;
///
/// let ctx = Context::new();
/// let obj = ctx
/// .eval("({ a: 1, b: 2 })")
/// .unwrap()
/// .to_object(&ctx)
/// .unwrap();
/// let value = obj.set("c", ctx.new_i32(3));
/// assert_eq!(value, Value::undefined());
/// let value = obj.get("c").unwrap();
/// assert_eq!(value, ctx.new_i32(3));
/// ```
pub fn set(&self, key: &str, value: impl Into<Value>) -> Value {
unsafe {
let value = rmquickjs_sys::JS_SetPropertyStr(
self.ctx.as_ptr(),
self.gc_ref.val.into(),
CString::new(key).unwrap().as_ptr(),
value.into().into_raw(),
);
Value::from_raw(value)
}
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_object() {
let ctx = Context::new();
let obj = ctx
.eval("({ a: 1, b: 2 })")
.unwrap()
.to_object(&ctx)
.unwrap();
let value = obj.get("a").unwrap();
assert_eq!(value, ctx.new_i32(1));
let value = obj.get("b").unwrap();
assert_eq!(value, ctx.new_i32(2));
let value = obj.set("c", ctx.new_i32(3));
assert_eq!(value, Value::undefined());
let value = obj.get("c").unwrap();
assert_eq!(value, ctx.new_i32(3));
}
}