diff --git a/spec.html b/spec.html index f8e0d75558..1ae3cc77c2 100644 --- a/spec.html +++ b/spec.html @@ -1145,13 +1145,13 @@

The String Type

ECMAScript operations that do not interpret String contents apply no further semantics. Operations that do interpret String values treat each element as a single UTF-16 code unit. However, ECMAScript does not restrict the value of or relationships between these code units, so operations that further interpret String contents as sequences of Unicode code points encoded in UTF-16 must account for ill-formed subsequences. Such operations apply special treatment to every code unit with a numeric value in the inclusive interval from 0xD800 to 0xDBFF (defined by the Unicode Standard as a leading surrogate, or more formally as a high-surrogate code unit) and every code unit with a numeric value in the inclusive interval from 0xDC00 to 0xDFFF (defined as a trailing surrogate, or more formally as a low-surrogate code unit) using the following rules:

The function `String.prototype.normalize` (see ) can be used to explicitly normalize a String value. `String.prototype.localeCompare` (see ) internally normalizes String values, but no other operations implicitly normalize the strings upon which they operate. Operation results are not language- and/or locale-sensitive unless stated otherwise.

@@ -2709,7 +2709,7 @@

The Object Type

The properties of an object are uniquely identified using property keys. A property key is either a String or a Symbol. All Strings and Symbols, including the empty String, are valid as property keys. A property name is a property key that is a String.

An integer index is a property name _n_ such that CanonicalNumericIndexString(_n_) returns an integral Number in the inclusive interval from *+0*𝔽 to 𝔽(253 - 1). An array index is an integer index _n_ such that CanonicalNumericIndexString(_n_) returns an integral Number in the inclusive interval from *+0*𝔽 to 𝔽(232 - 2).

-

Every non-negative safe integer has a corresponding integer index. Every 32-bit unsigned integer except 232 - 1 has a corresponding array index. *"-0"* is neither an integer index nor an array index.

+

Every non-negative safe integer has a corresponding integer index. Every 32-bit unsigned integer except 232 - 1 has a corresponding array index. *"-0"* is neither an integer index nor an array index.

Property keys are used to access properties and their values. There are two kinds of access for properties: get and set, corresponding to value retrieval and assignment, respectively. The properties accessible via get and set access includes both own properties that are a direct part of an object and inherited properties which are provided by another associated object via a property inheritance relationship. Inherited properties may be either own or inherited properties of the associated object. Each own property of an object must each have a key value that is distinct from the key values of the other own properties of that object.

All objects are logically collections of properties, but there are multiple forms of objects that differ in their semantics for accessing and manipulating their properties. Please see for definitions of the multiple forms of objects.

@@ -11999,8 +11999,8 @@

An implementation of HostEnqueuePromiseJob must conform to the requirements in as well as the following:

@@ -14495,7 +14495,7 @@

Integer-Indexed Exotic Objects

An Integer-Indexed exotic object is an exotic object that performs special handling of integer index property keys.

-

Integer-Indexed exotic objects have the same internal slots as ordinary objects and additionally [[ViewedArrayBuffer]], [[ArrayLength]], [[ByteOffset]], [[ContentType]], and [[TypedArrayName]] internal slots.

+

Integer-Indexed exotic objects have the same internal slots as ordinary objects and additionally [[ViewedArrayBuffer]], [[ArrayLength]], [[ByteOffset]], [[ContentType]], and [[TypedArrayName]] internal slots.

An object is an Integer-Indexed exotic object if its [[GetOwnProperty]], [[HasProperty]], [[DefineOwnProperty]], [[Get]], [[Set]], [[Delete]], and [[OwnPropertyKeys]] internal methods use the definitions in this section, and its other essential internal methods use the definitions found in . These methods are installed by IntegerIndexedObjectCreate.

@@ -14717,7 +14717,7 @@

description
-
It is used to specify the creation of new Integer-Indexed exotic objects.
+
It is used to specify the creation of new Integer-Indexed exotic objects.
1. Let _internalSlotsList_ be « [[Prototype]], [[Extensible]], [[ViewedArrayBuffer]], [[TypedArrayName]], [[ContentType]], [[ByteLength]], [[ByteOffset]], [[ArrayLength]] ». @@ -15989,10 +15989,10 @@

description
-
Two code units that form a UTF-16 are converted to a code point.
+
Two code units that form a UTF-16 surrogate pair are converted to a code point.
- 1. Assert: _lead_ is a and _trail_ is a . + 1. Assert: _lead_ is a leading surrogate and _trail_ is a trailing surrogate. 1. Let _cp_ be (_lead_ - 0xD800) × 0x400 + (_trail_ - 0xDC00) + 0x10000. 1. Return the code point _cp_. @@ -16014,12 +16014,12 @@

1. Assert: _position_ ≥ 0 and _position_ < _size_. 1. Let _first_ be the code unit at index _position_ within _string_. 1. Let _cp_ be the code point whose numeric value is the numeric value of _first_. - 1. If _first_ is neither a nor a , then + 1. If _first_ is neither a leading surrogate nor a trailing surrogate, then 1. Return the Record { [[CodePoint]]: _cp_, [[CodeUnitCount]]: 1, [[IsUnpairedSurrogate]]: *false* }. - 1. If _first_ is a or _position_ + 1 = _size_, then + 1. If _first_ is a trailing surrogate or _position_ + 1 = _size_, then 1. Return the Record { [[CodePoint]]: _cp_, [[CodeUnitCount]]: 1, [[IsUnpairedSurrogate]]: *true* }. 1. Let _second_ be the code unit at index _position_ + 1 within _string_. - 1. If _second_ is not a , then + 1. If _second_ is not a trailing surrogate, then 1. Return the Record { [[CodePoint]]: _cp_, [[CodeUnitCount]]: 1, [[IsUnpairedSurrogate]]: *true* }. 1. Set _cp_ to UTF16SurrogatePairToCodePoint(_first_, _second_). 1. Return the Record { [[CodePoint]]: _cp_, [[CodeUnitCount]]: 2, [[IsUnpairedSurrogate]]: *false* }. @@ -34500,7 +34500,7 @@

String.prototype.charCodeAt ( _pos_ )

String.prototype.codePointAt ( _pos_ )

-

This method returns a non-negative integral Number less than or equal to *0x10FFFF*𝔽 that is the numeric value of the UTF-16 encoded code point () starting at the string element at index _pos_ within the String resulting from converting this object to a String. If there is no element at that index, the result is *undefined*. If a valid UTF-16 does not begin at _pos_, the result is the code unit at _pos_.

+

This method returns a non-negative integral Number less than or equal to *0x10FFFF*𝔽 that is the numeric value of the UTF-16 encoded code point () starting at the string element at index _pos_ within the String resulting from converting this object to a String. If there is no element at that index, the result is *undefined*. If a valid UTF-16 surrogate pair does not begin at _pos_, the result is the code unit at _pos_.

This method performs the following steps when called:

@@ -41667,7 +41667,7 @@

_TypedArray_.prototype.constructor

Properties of _TypedArray_ Instances

-

_TypedArray_ instances are Integer-Indexed exotic objects. Each _TypedArray_ instance inherits properties from the corresponding _TypedArray_ prototype object. Each _TypedArray_ instance has the following internal slots: [[TypedArrayName]], [[ViewedArrayBuffer]], [[ByteLength]], [[ByteOffset]], and [[ArrayLength]].

+

_TypedArray_ instances are Integer-Indexed exotic objects. Each _TypedArray_ instance inherits properties from the corresponding _TypedArray_ prototype object. Each _TypedArray_ instance has the following internal slots: [[TypedArrayName]], [[ViewedArrayBuffer]], [[ByteLength]], [[ByteOffset]], and [[ArrayLength]].

@@ -45095,7 +45095,7 @@

1. For each code point _C_ of StringToCodePoints(_value_), do 1. If _C_ is listed in the “Code Point” column of , then 1. Set _product_ to the string-concatenation of _product_ and the escape sequence for _C_ as specified in the “Escape Sequence” column of the corresponding row. - 1. Else if _C_ has a numeric value less than 0x0020 (SPACE) or _C_ has the same numeric value as a or , then + 1. Else if _C_ has a numeric value less than 0x0020 (SPACE) or _C_ has the same numeric value as a leading surrogate or trailing surrogate, then 1. Let _unit_ be the code unit whose numeric value is the numeric value of _C_. 1. Set _product_ to the string-concatenation of _product_ and UnicodeEscape(_unit_). 1. Else,