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[Merged by Bors] - Handle __proto__
fields in object literals
#2423
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,36 @@ | ||
use crate::{ | ||
vm::{opcode::Operation, ShouldExit}, | ||
Context, JsResult, | ||
}; | ||
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/// `SetPrototype` implements the Opcode Operation for `Opcode::SetPrototype` | ||
/// | ||
/// Operation: | ||
/// - Sets the prototype of an object. | ||
#[derive(Debug, Clone, Copy)] | ||
pub(crate) struct SetPrototype; | ||
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impl Operation for SetPrototype { | ||
const NAME: &'static str = "SetPrototype"; | ||
const INSTRUCTION: &'static str = "INST - SetPrototype"; | ||
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fn execute(context: &mut Context) -> JsResult<ShouldExit> { | ||
let value = context.vm.pop(); | ||
let object = context.vm.pop(); | ||
|
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let prototype = if let Some(prototype) = value.as_object() { | ||
Some(prototype.clone()) | ||
} else if value.is_null() { | ||
None | ||
} else { | ||
return Ok(ShouldExit::False); | ||
}; | ||
|
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let object = object.as_object().expect("object is not an object"); | ||
object | ||
.__set_prototype_of__(prototype, context) | ||
.expect("cannot fail per spec"); | ||
|
||
Ok(ShouldExit::False) | ||
} | ||
} |
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Here it says that this cannot fail per the spec, but then I'm missing some link to the spec, or the spec text that says so, right?
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I will open is issue for this as it is currently a problem with all opcodes.