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61 lines
1.8 KiB
Rust
61 lines
1.8 KiB
Rust
// Copyright 2019-2020 the Deno authors. All rights reserved. MIT license.
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use crate::isolate::Isolate;
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use crate::Context;
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use crate::HandleScope;
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use crate::Local;
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use crate::Object;
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use crate::ObjectTemplate;
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use crate::Value;
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use std::ptr::null;
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extern "C" {
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fn v8__Context__New(
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isolate: *mut Isolate,
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templ: *const ObjectTemplate,
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global_object: *const Value,
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) -> *const Context;
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fn v8__Context__Global(this: *const Context) -> *const Object;
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}
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impl Context {
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/// Creates a new context.
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pub fn new<'s>(scope: &mut HandleScope<'s, ()>) -> Local<'s, Context> {
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// TODO: optional arguments;
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unsafe {
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scope
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.cast_local(|sd| v8__Context__New(sd.get_isolate_ptr(), null(), null()))
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}
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.unwrap()
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}
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/// Creates a new context using the object template as the template for
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/// the global object.
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pub fn new_from_template<'s>(
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scope: &mut HandleScope<'s, ()>,
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templ: Local<ObjectTemplate>,
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) -> Local<'s, Context> {
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unsafe {
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scope.cast_local(|sd| {
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v8__Context__New(sd.get_isolate_ptr(), &*templ, null())
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})
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}
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.unwrap()
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}
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/// Returns the global proxy object.
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///
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/// Global proxy object is a thin wrapper whose prototype points to actual
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/// context's global object with the properties like Object, etc. This is done
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/// that way for security reasons (for more details see
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/// https://wiki.mozilla.org/Gecko:SplitWindow).
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///
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/// Please note that changes to global proxy object prototype most probably
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/// would break VM---v8 expects only global object as a prototype of global
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/// proxy object.
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pub fn global<'s>(
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&self,
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scope: &mut HandleScope<'s, ()>,
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) -> Local<'s, Object> {
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unsafe { scope.cast_local(|_| v8__Context__Global(self)) }.unwrap()
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}
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}
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