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stylo: handle unresolved url value gracefully

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This commit is contained in:
Xidorn Quan 2016-12-21 10:14:44 +11:00
parent fed488cd01
commit 09ce1320e9
3 changed files with 21 additions and 8 deletions
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12
components/style/values/specified/url.rs
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@ -13,7 +13,6 @@ use parser::ParserContextExtraData;
use servo_url::ServoUrl;
use std::borrow::Cow;
use std::fmt::{self, Write};
use std::ptr;
use std::sync::Arc;
use style_traits::ToCss;
use values::NoViewportPercentage;
@ -121,10 +120,15 @@ impl SpecifiedUrl {
}
/// Little helper for Gecko's ffi.
pub fn as_slice_components(&self) -> (*const u8, usize) {
#[cfg(feature = "gecko")]
pub fn as_slice_components(&self) -> Result<(*const u8, usize), (*const u8, usize)> {
match self.resolved {
Some(ref url) => (url.as_str().as_ptr(), url.as_str().len()),
None => (ptr::null(), 0),
Some(ref url) => Ok((url.as_str().as_ptr(), url.as_str().len())),
None => {
let url = self.original.as_ref()
.expect("We should always have either the original or the resolved value");
Err((url.as_str().as_ptr(), url.as_str().len()))
}
}
}