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Move CSS lexing into the parser to create a simpler interface

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This commit is contained in:
Brian Anderson 2012-10-30 16:51:21 -07:00
parent 66f4fdc017
commit 23b6b386cb
3 changed files with 15 additions and 25 deletions
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2
src/rust-css

@ -1 +1 @@
Subproject commit 5ff00c90ba3c668f5da62eb25377e37714f855e7
Subproject commit 37cfbe86b6c024de87d1815843c956f4de535e9c

2
src/rust-netsurfcss

@ -1 +1 @@
Subproject commit 16ed0ba20caab03e5c16acb674e0f97d04327065
Subproject commit d83cd4e787993461bd00e321ee28570005dc933c

36
src/servo/html/cssparse.rs
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@ -3,42 +3,32 @@ Some little helpers for hooking up the HTML parser with the CSS parser
*/
use std::net::url::Url;
use std::cell::Cell;
use resource::resource_task::{ResourceTask, ProgressMsg, Load, Payload, Done};
use newcss::values::Rule;
use newcss::lexer_util::DataStream;
use newcss::lexer::{Token, lex_css_from_bytes};
use newcss::values::Stylesheet;
use newcss::util::{DataStream, DataStreamFactory};
pub fn spawn_css_parser(url: Url, resource_task: ResourceTask) -> comm::Port<~[~Rule]> {
pub fn spawn_css_parser(url: Url, resource_task: ResourceTask) -> comm::Port<Stylesheet> {
let result_port = comm::Port();
let result_chan = comm::Chan(&result_port);
// TODO: change copy to move once we have match move
let url = copy url;
do task::spawn |move url, copy resource_task| {
let css_stream = spawn_css_lexer_task(copy url, resource_task);
let mut css_rules = newcss::parser::build_stylesheet(move css_stream);
result_chan.send(move css_rules);
let sheet = newcss::parser::parse_stylesheet(copy url, data_stream_factory(copy url, resource_task));
result_chan.send(move sheet);
}
return result_port;
}
#[allow(non_implicitly_copyable_typarams)]
fn spawn_css_lexer_task(url: Url, resource_task: ResourceTask) -> pipes::Port<Token> {
let (result_chan, result_port) = pipes::stream();
do task::spawn |move result_chan, move url| {
assert url.path.ends_with(".css");
fn data_stream_factory(url: Url, resource_task: ResourceTask) -> DataStreamFactory {
let url = Cell(move url);
return |move url| {
let input_port = Port();
// TODO: change copy to move once the compiler permits it
resource_task.send(Load(copy url, input_port.chan()));
lex_css_from_bytes(resource_port_to_lexer_stream(input_port), &result_chan);
};
return move result_port;
resource_task.send(Load(url.take(), input_port.chan()));
resource_port_to_data_stream(input_port)
}
}
fn resource_port_to_lexer_stream(input_port: comm::Port<ProgressMsg>) -> DataStream {
fn resource_port_to_data_stream(input_port: comm::Port<ProgressMsg>) -> DataStream {
return || {
match input_port.recv() {
Payload(move data) => Some(move data),