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Implement Annex-B string html methods (#2798) 

Implements all Annex-B string html methods, they are deprecated but still part of the ES5 spec. They have been feature gated under the `"annex-b"` feature flag
pull/2805/head
Haled Odat 2 years ago
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1 changed files with 354 additions and 3 deletions
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  1. 357
      boa_engine/src/builtins/string/mod.rs

357
boa_engine/src/builtins/string/mod.rs
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@ -71,7 +71,7 @@ impl IntrinsicObject for String {
let symbol_iterator = JsSymbol::iterator();
let attribute = Attribute::READONLY | Attribute::NON_ENUMERABLE | Attribute::PERMANENT;
BuiltInBuilder::from_standard_constructor::<Self>(realm)
let builder = BuiltInBuilder::from_standard_constructor::<Self>(realm)
.property(utf16!("length"), 0, attribute)
.static_method(Self::raw, "raw", 1)
.static_method(Self::from_char_code, "fromCharCode", 1)
@ -107,8 +107,29 @@ impl IntrinsicObject for String {
.method(Self::replace_all, "replaceAll", 2)
.method(Self::iterator, (symbol_iterator, "[Symbol.iterator]"), 0)
.method(Self::search, "search", 1)
.method(Self::at, "at", 1)
.build();
.method(Self::at, "at", 1);
#[cfg(feature = "annex-b")]
{
builder
.method(Self::anchor, "anchor", 1)
.method(Self::big, "big", 0)
.method(Self::blink, "blink", 0)
.method(Self::bold, "bold", 0)
.method(Self::fixed, "fixed", 0)
.method(Self::fontcolor, "fontcolor", 1)
.method(Self::fontsize, "fontsize", 1)
.method(Self::italics, "italics", 0)
.method(Self::link, "link", 1)
.method(Self::small, "small", 0)
.method(Self::strike, "strike", 0)
.method(Self::sub, "sub", 0)
.method(Self::sup, "sup", 0)
.build();
}
#[cfg(not(feature = "annex-b"))]
builder.build();
}
fn get(intrinsics: &Intrinsics) -> JsObject {
@ -2175,6 +2196,336 @@ impl String {
}
}
#[cfg(feature = "annex-b")]
impl String {
/// `CreateHTML(string, tag, attribute, value)`
///
/// More information:
/// - [ECMAScript reference][spec]
///
/// [spec]: https://tc39.es/ecma262/#sec-createhtml
pub(crate) fn create_html(
string: &JsValue,
tag: &[u16],
attribute_and_value: Option<(&[u16], &JsValue)>,
context: &mut Context<'_>,
) -> JsResult<JsValue> {
// 1. Let str be ? RequireObjectCoercible(string).
let str = string.require_object_coercible()?;
// 2. Let S be ? ToString(str).
let s = str.to_string(context)?;
// 3. Let p1 be the string-concatenation of "<" and tag.
let mut p1 = JsString::concat_array(&[utf16!("<"), tag]);
// 4. If attribute is not the empty String, then
if let Some((attribute, value)) = attribute_and_value {
// a. Let V be ? ToString(value).
let v = value.to_string(context)?;
// b. Let escapedV be the String value that is the same as V except that each occurrence
// of the code unit 0x0022 (QUOTATION MARK) in V has been replaced with the six
// code unit sequence "&quot;".
let mut escaped_v = Vec::with_capacity(v.len());
for c in v.as_slice().iter().copied() {
if c == 0x0022 {
escaped_v.extend(utf16!("&quot;"));
continue;
}
escaped_v.push(c);
}
// c. Set p1 to the string-concatenation of:
// p1
// the code unit 0x0020 (SPACE)
// attribute
// the code unit 0x003D (EQUALS SIGN)
// the code unit 0x0022 (QUOTATION MARK)
// escapedV
// the code unit 0x0022 (QUOTATION MARK)
p1 = JsString::concat_array(&[
p1.as_slice(),
utf16!(" "),
attribute,
utf16!("=\""),
escaped_v.as_slice(),
utf16!("\""),
]);
}
// 5. Let p2 be the string-concatenation of p1 and ">".
// 6. Let p3 be the string-concatenation of p2 and S.
// 7. Let p4 be the string-concatenation of p3, "</", tag, and ">".
let p4 = JsString::concat_array(&[
p1.as_slice(),
utf16!(">"),
s.as_slice(),
utf16!("</"),
tag,
utf16!(">"),
]);
// 8. Return p4.
Ok(p4.into())
}
/// `String.prototype.anchor( name )`
///
/// More information:
/// - [ECMAScript reference][spec]
/// - [MDN documentation][mdn]
///
/// [spec]: https://tc39.es/ecma262/#sec-string.prototype.anchor
/// [mdn]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/anchor
pub(crate) fn anchor(
this: &JsValue,
args: &[JsValue],
context: &mut Context<'_>,
) -> JsResult<JsValue> {
let name = args.get_or_undefined(0);
// 1. Let S be the this value.
let s = this;
// 2. Return ? CreateHTML(S, "a", "name", name).
Self::create_html(s, utf16!("a"), Some((utf16!("name"), name)), context)
}
/// `String.prototype.big( )`
///
/// More information:
/// - [ECMAScript reference][spec]
/// - [MDN documentation][mdn]
///
/// [spec]: https://tc39.es/ecma262/#sec-string.prototype.big
/// [mdn]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/big
pub(crate) fn big(
this: &JsValue,
_: &[JsValue],
context: &mut Context<'_>,
) -> JsResult<JsValue> {
// 1. Let S be the this value.
let s = this;
// 2. Return ? CreateHTML(S, "big", "", "").
Self::create_html(s, utf16!("big"), None, context)
}
/// `String.prototype.blink( )`
///
/// More information:
/// - [ECMAScript reference][spec]
/// - [MDN documentation][mdn]
///
/// [spec]: https://tc39.es/ecma262/#sec-string.prototype.blink
/// [mdn]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/blink
pub(crate) fn blink(
this: &JsValue,
_: &[JsValue],
context: &mut Context<'_>,
) -> JsResult<JsValue> {
// 1. Let S be the this value.
let s = this;
// 2. Return ? CreateHTML(S, "blink", "", "").
Self::create_html(s, utf16!("blink"), None, context)
}
/// `String.prototype.bold( )`
///
/// More information:
/// - [ECMAScript reference][spec]
/// - [MDN documentation][mdn]
///
/// [spec]: https://tc39.es/ecma262/#sec-string.prototype.bold
/// [mdn]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/bold
pub(crate) fn bold(
this: &JsValue,
_: &[JsValue],
context: &mut Context<'_>,
) -> JsResult<JsValue> {
// 1. Let S be the this value.
let s = this;
// 2. Return ? CreateHTML(S, "b", "", "").
Self::create_html(s, utf16!("b"), None, context)
}
/// `String.prototype.fixed( )`
///
/// More information:
/// - [ECMAScript reference][spec]
/// - [MDN documentation][mdn]
///
/// [spec]: https://tc39.es/ecma262/#sec-string.prototype.fixed
/// [mdn]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/fixed
pub(crate) fn fixed(
this: &JsValue,
_: &[JsValue],
context: &mut Context<'_>,
) -> JsResult<JsValue> {
// 1. Let S be the this value.
let s = this;
// 2. Return ? CreateHTML(S, "big", "", "").
Self::create_html(s, utf16!("tt"), None, context)
}
/// `String.prototype.fontcolor( color )`
///
/// More information:
/// - [ECMAScript reference][spec]
/// - [MDN documentation][mdn]
///
/// [spec]: https://tc39.es/ecma262/#sec-string.prototype.fontcolor
/// [mdn]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/fontcolor
pub(crate) fn fontcolor(
this: &JsValue,
args: &[JsValue],
context: &mut Context<'_>,
) -> JsResult<JsValue> {
let color = args.get_or_undefined(0);
// 1. Let S be the this value.
let s = this;
// 2. Return ? CreateHTML(S, "font", "color", color).
Self::create_html(s, utf16!("font"), Some((utf16!("color"), color)), context)
}
/// `String.prototype.fontsize( size )`
///
/// More information:
/// - [ECMAScript reference][spec]
/// - [MDN documentation][mdn]
///
/// [spec]: https://tc39.es/ecma262/#sec-string.prototype.fontsize
/// [mdn]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/fontsize
pub(crate) fn fontsize(
this: &JsValue,
args: &[JsValue],
context: &mut Context<'_>,
) -> JsResult<JsValue> {
let size = args.get_or_undefined(0);
// 1. Let S be the this value.
let s = this;
// 2. Return ? CreateHTML(S, "font", "size", size).
Self::create_html(s, utf16!("font"), Some((utf16!("size"), size)), context)
}
/// `String.prototype.italics( )`
///
/// More information:
/// - [ECMAScript reference][spec]
/// - [MDN documentation][mdn]
///
/// [spec]: https://tc39.es/ecma262/#sec-string.prototype.italics
/// [mdn]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/italics
pub(crate) fn italics(
this: &JsValue,
_: &[JsValue],
context: &mut Context<'_>,
) -> JsResult<JsValue> {
// 1. Let S be the this value.
let s = this;
// 2. Return ? CreateHTML(S, "i", "", "").
Self::create_html(s, utf16!("i"), None, context)
}
/// `String.prototype.link( url )`
///
/// More information:
/// - [ECMAScript reference][spec]
/// - [MDN documentation][mdn]
///
/// [spec]: https://tc39.es/ecma262/#sec-string.prototype.link
/// [mdn]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/link
pub(crate) fn link(
this: &JsValue,
args: &[JsValue],
context: &mut Context<'_>,
) -> JsResult<JsValue> {
let url = args.get_or_undefined(0);
// 1. Let S be the this value.
let s = this;
// 2. Return ? CreateHTML(S, "a", "href", url).
Self::create_html(s, utf16!("a"), Some((utf16!("href"), url)), context)
}
/// `String.prototype.small( )`
///
/// More information:
/// - [ECMAScript reference][spec]
/// - [MDN documentation][mdn]
///
/// [spec]: https://tc39.es/ecma262/#sec-string.prototype.small
/// [mdn]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/small
pub(crate) fn small(
this: &JsValue,
_: &[JsValue],
context: &mut Context<'_>,
) -> JsResult<JsValue> {
// 1. Let S be the this value.
let s = this;
// 2. Return ? CreateHTML(S, "small", "", "").
Self::create_html(s, utf16!("small"), None, context)
}
/// `String.prototype.strike( )`
///
/// More information:
/// - [ECMAScript reference][spec]
/// - [MDN documentation][mdn]
///
/// [spec]: https://tc39.es/ecma262/#sec-string.prototype.strike
/// [mdn]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/strike
pub(crate) fn strike(
this: &JsValue,
_: &[JsValue],
context: &mut Context<'_>,
) -> JsResult<JsValue> {
// 1. Let S be the this value.
let s = this;
// 2. Return ? CreateHTML(S, "strike", "", "").
Self::create_html(s, utf16!("strike"), None, context)
}
/// `String.prototype.sub( )`
///
/// More information:
/// - [ECMAScript reference][spec]
/// - [MDN documentation][mdn]
///
/// [spec]: https://tc39.es/ecma262/#sec-string.prototype.sub
/// [mdn]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/sub
pub(crate) fn sub(
this: &JsValue,
_: &[JsValue],
context: &mut Context<'_>,
) -> JsResult<JsValue> {
// 1. Let S be the this value.
let s = this;
// 2. Return ? CreateHTML(S, "sub", "", "").
Self::create_html(s, utf16!("sub"), None, context)
}
/// `String.prototype.sup( )`
///
/// More information:
/// - [ECMAScript reference][spec]
/// - [MDN documentation][mdn]
///
/// [spec]: https://tc39.es/ecma262/#sec-string.prototype.sup
/// [mdn]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/sup
pub(crate) fn sup(
this: &JsValue,
_: &[JsValue],
context: &mut Context<'_>,
) -> JsResult<JsValue> {
// 1. Let S be the this value.
let s = this;
// 2. Return ? CreateHTML(S, "sup", "", "").
Self::create_html(s, utf16!("sup"), None, context)
}
}
/// Abstract operation `GetSubstitution ( matched, str, position, captures, namedCaptures, replacement )`
///
/// More information:

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