616a02633f
…reak servo <!-- Please describe your changes on the following line: --> --- <!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `__` with appropriate data: --> - [x] `./mach build -d` does not report any errors - [x] `./mach test-tidy` does not report any errors - [x] These changes fix https://github.com/servo/rust-mozjs/issues/153 <!-- Either: --> - [ ] There are tests for these changes OR - [x] These changes do not require tests because this is just migration to a lifetimed API <!-- Also, please make sure that "Allow edits from maintainers" checkbox is checked, so that we can help you if you get stuck somewhere along the way.--> <!-- Pull requests that do not address these steps are welcome, but they will require additional verification as part of the review process. --> Source-Repo: https://github.com/servo/servo Source-Revision: 914952487bcbba0a31db8aefc4a9487903721959
69 lines
2.1 KiB
Rust
69 lines
2.1 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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//! WebIDL constants.
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use js::jsapi::{JSContext, JSPROP_ENUMERATE, JSPROP_PERMANENT};
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use js::jsapi::JSPROP_READONLY;
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use js::jsval::{BooleanValue, DoubleValue, Int32Value, JSVal, NullValue, UInt32Value};
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use js::rust::HandleObject;
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use js::rust::wrappers::JS_DefineProperty;
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use libc;
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/// Representation of an IDL constant.
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#[derive(Clone)]
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pub struct ConstantSpec {
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/// name of the constant.
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pub name: &'static [u8],
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/// value of the constant.
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pub value: ConstantVal,
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}
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/// Representation of an IDL constant value.
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#[derive(Clone)]
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#[allow(dead_code)]
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pub enum ConstantVal {
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/// `long` constant.
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IntVal(i32),
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/// `unsigned long` constant.
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UintVal(u32),
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/// `double` constant.
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DoubleVal(f64),
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/// `boolean` constant.
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BoolVal(bool),
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/// `null` constant.
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NullVal,
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}
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impl ConstantSpec {
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/// Returns a `JSVal` that represents the value of this `ConstantSpec`.
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pub fn get_value(&self) -> JSVal {
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match self.value {
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ConstantVal::NullVal => NullValue(),
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ConstantVal::IntVal(i) => Int32Value(i),
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ConstantVal::UintVal(u) => UInt32Value(u),
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ConstantVal::DoubleVal(d) => DoubleValue(d),
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ConstantVal::BoolVal(b) => BooleanValue(b),
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}
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}
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}
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/// Defines constants on `obj`.
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/// Fails on JSAPI failure.
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pub unsafe fn define_constants(
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cx: *mut JSContext,
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obj: HandleObject,
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constants: &[ConstantSpec]) {
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for spec in constants {
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rooted!(in(cx) let value = spec.get_value());
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assert!(JS_DefineProperty(cx,
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obj,
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spec.name.as_ptr() as *const libc::c_char,
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value.handle(),
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JSPROP_ENUMERATE | JSPROP_READONLY | JSPROP_PERMANENT,
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None,
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None));
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}
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}
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