Struct parsercher::dom::tag::Tag

pub struct Tag { /* fields omitted */ }

A structure that represents a tag element. grammar: <[/]name [attr[="value"]] [/]>

Implementations

impl Tag

pub fn new(name: &str) -> Tag

Create new Tag structer

Arguments

• name - If <h1 class="section1">, then h1.

pub fn get_name(&self) -> &str

Returns the tag name. If <li class="item">, then li.

pub fn set_attrs(&mut self, attrs: HashMap<String, String>)

Set attributes.

Arguments

• attr - Attribute name is key. Attribute value is value.

Examples

For <h1 id="title" class="section1">:

use std::collections::HashMap;
use parsercher::dom::Tag;

let mut tag = Tag::new("h1");
let mut attrs: HashMap<String, String> = HashMap::new();
attrs.insert("id".to_string(), "title".to_string());
attrs.insert("class".to_string(), "section1".to_string());
tag.set_attrs(attrs);

pub fn get_attrs(&self) -> Option<&HashMap<String, String>>

Returns attributes. If there is no attribute, None is returned.

Examples

For <h1 id="title" class="section1">:

use parsercher::dom::Tag;

let mut tag = Tag::new("h1");
tag.set_attr("id", "title");
tag.set_attr("class", "section1");

if let Some(attrs) = tag.get_attrs() {
    assert_eq!(attrs.get(&"id".to_string()), Some(&"title".to_string()));
    assert_eq!(attrs.get(&"class".to_string()), Some(&"section1".to_string()));
}

pub fn set_attr(&mut self, attr: &str, value: &str)

Set attribute.

Examples

For <h1 id="title" class="section1">:

use parsercher::dom::Tag;

let mut tag = Tag::new("h1");
tag.set_attr("id", "title");
tag.set_attr("class", "section1");

pub fn get_attr(&self, attr: &str) -> Option<String>

Returns the value of the specified attribute.

Examples

For <h1 id="title" class="section1">:

use parsercher::dom::Tag;

let mut tag = Tag::new("h1");
tag.set_attr("id", "title");
tag.set_attr("class", "section1");

if let Some(value) = tag.get_attr("class") {
    assert_eq!(value, "section1".to_string());
}

pub fn set_terminated(&mut self, b: bool)

Set true to represent tags that are self-closed.

Examples

<area/>

pub fn is_terminated(&self) -> bool

Returns true if the self-closed tag.

Examples

<area/>

pub fn set_terminator(&mut self, b: bool)

Set true to indicate that there is a terminator tag.

Examples

<h1></h1>

pub fn is_terminator(&self) -> bool

Returns true if there is a terminator tag.

Examples

<h1></h1>

pub fn p_implies_q(p: &Tag, q: &Tag) -> bool

Returns true if p is a sufficient condition for q. p => q

Examples

use std::collections::HashMap;
use parsercher::dom::Tag;

let mut p = Tag::new("h1");
p.set_attr("class", "target");

let mut q = Tag::new("h1");
q.set_attr("id", "q");
q.set_attr("class", "target");

assert_eq!(Tag::p_implies_q(&p, &q), true);

let mut q = Tag::new("h1");
q.set_attr("id", "q");

assert_eq!(Tag::p_implies_q(&p, &q), false);

Trait Implementations

impl Clone for Tag

fn clone(&self) -> Tag

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Tag

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq<Tag> for Tag

fn eq(&self, other: &Tag) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Tag) -> bool

This method tests for !=.

impl StructuralPartialEq for Tag