Struct markup5ever::buffer_queue::BufferQueue
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pub struct BufferQueue { /* fields omitted */ }A queue of owned string buffers, which supports incrementally consuming characters.
Internally it uses VecDeque and has the same complexity properties.
Methods
impl BufferQueue[src]
fn new() -> BufferQueue[src]
Create an empty BufferQueue.
fn is_empty(&self) -> bool[src]
Returns whether the queue is empty.
fn pop_front(&mut self) -> Option<StrTendril>[src]
Get the buffer at the beginning of the queue.
fn push_front(&mut self, buf: StrTendril)[src]
Add a buffer to the beginning of the queue.
If the buffer is empty, it will be skipped.
fn push_back(&mut self, buf: StrTendril)[src]
Add a buffer to the end of the queue.
If the buffer is empty, it will be skipped.
fn peek(&self) -> Option<char>[src]
Look at the next available character without removing it, if the queue is not empty.
fn next(&mut self) -> Option<char>[src]
Get the next character if one is available, removing it from the queue.
This function manages the buffers, removing them as they become empty.
fn pop_except_from(&mut self, set: SmallCharSet) -> Option<SetResult>[src]
Pops and returns either a single character from the given set, or a buffer of characters none of which are in the set.
Examples
use markup5ever::buffer_queue::{BufferQueue, SetResult}; let mut queue = BufferQueue::new(); queue.push_back(format_tendril!(r#"<some_tag attr="text">SomeText</some_tag>"#)); let set = small_char_set!(b'<' b'>' b' ' b'=' b'"' b'/'); let tag = format_tendril!("some_tag"); let attr = format_tendril!("attr"); let attr_val = format_tendril!("text"); assert_eq!(queue.pop_except_from(set), Some(SetResult::FromSet('<'))); assert_eq!(queue.pop_except_from(set), Some(SetResult::NotFromSet(tag))); assert_eq!(queue.pop_except_from(set), Some(SetResult::FromSet(' '))); assert_eq!(queue.pop_except_from(set), Some(SetResult::NotFromSet(attr))); assert_eq!(queue.pop_except_from(set), Some(SetResult::FromSet('='))); assert_eq!(queue.pop_except_from(set), Some(SetResult::FromSet('"'))); assert_eq!(queue.pop_except_from(set), Some(SetResult::NotFromSet(attr_val))); // ...
fn eat<F: Fn(&u8, &u8) -> bool>(&mut self, pat: &str, eq: F) -> Option<bool>[src]
Consume bytes matching the pattern, using a custom comparison function eq.
Returns Some(true) if there is a match, Some(false) if there is no match, or None if
it wasn't possible to know (more data is needed).
The custom comparison function is used elsewhere to compare ascii-case-insensitively.
Examples
use markup5ever::buffer_queue::{BufferQueue}; let mut queue = BufferQueue::new(); queue.push_back(format_tendril!("testtext")); let test_str = "test"; assert_eq!(queue.eat("test", |&a, &b| a == b), Some(true)); assert_eq!(queue.eat("text", |&a, &b| a == b), Some(true)); assert!(queue.is_empty());