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Add Rust APIs for interacting with Arc<String> (bug 1397971).

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This commit is contained in:
Josh Matthews 2017-09-14 23:41:42 -04:00
parent 9dd0513647
commit 1a57bad2a1
5 changed files with 173 additions and 38 deletions
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28
ports/geckolib/glue.rs
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@ -13,6 +13,7 @@ use std::cell::RefCell;
use std::env;
use std::fmt::Write;
use std::iter;
use std::mem;
use std::ptr;
use style::applicable_declarations::ApplicableDeclarationBlock;
use style::context::{CascadeInputs, QuirksMode, SharedStyleContext, StyleContext};
@ -77,7 +78,7 @@ use style::gecko_bindings::bindings::nsTimingFunctionBorrowedMut;
use style::gecko_bindings::structs;
use style::gecko_bindings::structs::{CSSPseudoElementType, CompositeOperation};
use style::gecko_bindings::structs::{Loader, LoaderReusableStyleSheets};
use style::gecko_bindings::structs::{RawServoStyleRule, ServoStyleContextStrong};
use style::gecko_bindings::structs::{RawServoStyleRule, ServoStyleContextStrong, RustString};
use style::gecko_bindings::structs::{ServoStyleSheet, SheetParsingMode, nsIAtom, nsCSSPropertyID};
use style::gecko_bindings::structs::{nsCSSFontFaceRule, nsCSSCounterStyleRule};
use style::gecko_bindings::structs::{nsRestyleHint, nsChangeHint, PropertyValuePair};
@ -3831,6 +3832,31 @@ pub extern "C" fn Servo_GetCustomPropertyNameAt(computed_values: ServoStyleConte
true
}
#[no_mangle]
pub unsafe extern "C" fn Servo_ReleaseArcStringData(string: *const RawOffsetArc<RustString>) {
let string = string as *const RawOffsetArc<String>;
// Cause RawOffsetArc::drop to run, releasing the strong reference to the string data.
let _ = ptr::read(string);
}
#[no_mangle]
pub unsafe extern "C" fn Servo_CloneArcStringData(string: *const RawOffsetArc<RustString>)
-> RawOffsetArc<RustString> {
let string = string as *const RawOffsetArc<String>;
let cloned = (*string).clone();
mem::transmute::<_, RawOffsetArc<RustString>>(cloned)
}
#[no_mangle]
pub unsafe extern "C" fn Servo_GetArcStringData(string: *const RustString,
utf8_chars: *mut *const u8,
utf8_len: *mut u32)
{
let string = &*(string as *const String);
*utf8_len = string.len() as u32;
*utf8_chars = string.as_ptr();
}
#[no_mangle]
pub extern "C" fn Servo_ProcessInvalidations(set: RawServoStyleSetBorrowed,
element: RawGeckoElementBorrowed,