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author | Minteck <contact@minteck.org> | 2023-01-10 14:54:04 +0100 |
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committer | Minteck <contact@minteck.org> | 2023-01-10 14:54:04 +0100 |
commit | 99c1d9af689e5325f3cf535c4007b3aeb8325229 (patch) | |
tree | e663b3c2ebdbd67c818ac0c5147f0ce1d2463cda /alarm/node_modules/webidl-conversions/lib | |
parent | 9871b03912fc28ad38b4037ebf26a78aa937baba (diff) | |
download | pluralconnect-99c1d9af689e5325f3cf535c4007b3aeb8325229.tar.gz pluralconnect-99c1d9af689e5325f3cf535c4007b3aeb8325229.tar.bz2 pluralconnect-99c1d9af689e5325f3cf535c4007b3aeb8325229.zip |
Update - This is an automated commit
Diffstat (limited to 'alarm/node_modules/webidl-conversions/lib')
-rw-r--r-- | alarm/node_modules/webidl-conversions/lib/index.js | 489 |
1 files changed, 0 insertions, 489 deletions
diff --git a/alarm/node_modules/webidl-conversions/lib/index.js b/alarm/node_modules/webidl-conversions/lib/index.js deleted file mode 100644 index 71d394a..0000000 --- a/alarm/node_modules/webidl-conversions/lib/index.js +++ /dev/null @@ -1,489 +0,0 @@ -"use strict"; - -function makeException(ErrorType, message, opts = {}) { - if (opts.globals) { - ErrorType = opts.globals[ErrorType.name]; - } - return new ErrorType(`${opts.context ? opts.context : "Value"} ${message}.`); -} - -function toNumber(value, opts = {}) { - if (!opts.globals) { - return +value; - } - if (typeof value === "bigint") { - throw opts.globals.TypeError("Cannot convert a BigInt value to a number"); - } - return opts.globals.Number(value); -} - -function type(V) { - if (V === null) { - return "Null"; - } - switch (typeof V) { - case "undefined": - return "Undefined"; - case "boolean": - return "Boolean"; - case "number": - return "Number"; - case "string": - return "String"; - case "symbol": - return "Symbol"; - case "bigint": - return "BigInt"; - case "object": - // Falls through - case "function": - // Falls through - default: - // Per ES spec, typeof returns an implemention-defined value that is not any of the existing ones for - // uncallable non-standard exotic objects. Yet Type() which the Web IDL spec depends on returns Object for - // such cases. So treat the default case as an object. - return "Object"; - } -} - -// Round x to the nearest integer, choosing the even integer if it lies halfway between two. -function evenRound(x) { - // There are four cases for numbers with fractional part being .5: - // - // case | x | floor(x) | round(x) | expected | x <> 0 | x % 1 | x & 1 | example - // 1 | 2n + 0.5 | 2n | 2n + 1 | 2n | > | 0.5 | 0 | 0.5 -> 0 - // 2 | 2n + 1.5 | 2n + 1 | 2n + 2 | 2n + 2 | > | 0.5 | 1 | 1.5 -> 2 - // 3 | -2n - 0.5 | -2n - 1 | -2n | -2n | < | -0.5 | 0 | -0.5 -> 0 - // 4 | -2n - 1.5 | -2n - 2 | -2n - 1 | -2n - 2 | < | -0.5 | 1 | -1.5 -> -2 - // (where n is a non-negative integer) - // - // Branch here for cases 1 and 4 - if ((x > 0 && (x % 1) === +0.5 && (x & 1) === 0) || - (x < 0 && (x % 1) === -0.5 && (x & 1) === 1)) { - return censorNegativeZero(Math.floor(x)); - } - - return censorNegativeZero(Math.round(x)); -} - -function integerPart(n) { - return censorNegativeZero(Math.trunc(n)); -} - -function sign(x) { - return x < 0 ? -1 : 1; -} - -function modulo(x, y) { - // https://tc39.github.io/ecma262/#eqn-modulo - // Note that http://stackoverflow.com/a/4467559/3191 does NOT work for large modulos - const signMightNotMatch = x % y; - if (sign(y) !== sign(signMightNotMatch)) { - return signMightNotMatch + y; - } - return signMightNotMatch; -} - -function censorNegativeZero(x) { - return x === 0 ? 0 : x; -} - -function createIntegerConversion(bitLength, typeOpts) { - const isSigned = !typeOpts.unsigned; - - let lowerBound; - let upperBound; - if (bitLength === 64) { - upperBound = Number.MAX_SAFE_INTEGER; - lowerBound = !isSigned ? 0 : Number.MIN_SAFE_INTEGER; - } else if (!isSigned) { - lowerBound = 0; - upperBound = Math.pow(2, bitLength) - 1; - } else { - lowerBound = -Math.pow(2, bitLength - 1); - upperBound = Math.pow(2, bitLength - 1) - 1; - } - - const twoToTheBitLength = Math.pow(2, bitLength); - const twoToOneLessThanTheBitLength = Math.pow(2, bitLength - 1); - - return (V, opts = {}) => { - let x = toNumber(V, opts); - x = censorNegativeZero(x); - - if (opts.enforceRange) { - if (!Number.isFinite(x)) { - throw makeException(TypeError, "is not a finite number", opts); - } - - x = integerPart(x); - - if (x < lowerBound || x > upperBound) { - throw makeException(TypeError, - `is outside the accepted range of ${lowerBound} to ${upperBound}, inclusive`, opts); - } - - return x; - } - - if (!Number.isNaN(x) && opts.clamp) { - x = Math.min(Math.max(x, lowerBound), upperBound); - x = evenRound(x); - return x; - } - - if (!Number.isFinite(x) || x === 0) { - return 0; - } - x = integerPart(x); - - // Math.pow(2, 64) is not accurately representable in JavaScript, so try to avoid these per-spec operations if - // possible. Hopefully it's an optimization for the non-64-bitLength cases too. - if (x >= lowerBound && x <= upperBound) { - return x; - } - - // These will not work great for bitLength of 64, but oh well. See the README for more details. - x = modulo(x, twoToTheBitLength); - if (isSigned && x >= twoToOneLessThanTheBitLength) { - return x - twoToTheBitLength; - } - return x; - }; -} - -function createLongLongConversion(bitLength, { unsigned }) { - const upperBound = Number.MAX_SAFE_INTEGER; - const lowerBound = unsigned ? 0 : Number.MIN_SAFE_INTEGER; - const asBigIntN = unsigned ? BigInt.asUintN : BigInt.asIntN; - - return (V, opts = {}) => { - if (opts === undefined) { - opts = {}; - } - - let x = toNumber(V, opts); - x = censorNegativeZero(x); - - if (opts.enforceRange) { - if (!Number.isFinite(x)) { - throw makeException(TypeError, "is not a finite number", opts); - } - - x = integerPart(x); - - if (x < lowerBound || x > upperBound) { - throw makeException(TypeError, - `is outside the accepted range of ${lowerBound} to ${upperBound}, inclusive`, opts); - } - - return x; - } - - if (!Number.isNaN(x) && opts.clamp) { - x = Math.min(Math.max(x, lowerBound), upperBound); - x = evenRound(x); - return x; - } - - if (!Number.isFinite(x) || x === 0) { - return 0; - } - - let xBigInt = BigInt(integerPart(x)); - xBigInt = asBigIntN(bitLength, xBigInt); - return Number(xBigInt); - }; -} - -exports.any = V => { - return V; -}; - -exports.void = function () { - return undefined; -}; - -exports.boolean = function (val) { - return !!val; -}; - -exports.byte = createIntegerConversion(8, { unsigned: false }); -exports.octet = createIntegerConversion(8, { unsigned: true }); - -exports.short = createIntegerConversion(16, { unsigned: false }); -exports["unsigned short"] = createIntegerConversion(16, { unsigned: true }); - -exports.long = createIntegerConversion(32, { unsigned: false }); -exports["unsigned long"] = createIntegerConversion(32, { unsigned: true }); - -exports["long long"] = createLongLongConversion(64, { unsigned: false }); -exports["unsigned long long"] = createLongLongConversion(64, { unsigned: true }); - -exports.double = (V, opts) => { - const x = toNumber(V, opts); - - if (!Number.isFinite(x)) { - throw makeException(TypeError, "is not a finite floating-point value", opts); - } - - return x; -}; - -exports["unrestricted double"] = (V, opts) => { - const x = toNumber(V, opts); - - return x; -}; - -exports.float = (V, opts) => { - const x = toNumber(V, opts); - - if (!Number.isFinite(x)) { - throw makeException(TypeError, "is not a finite floating-point value", opts); - } - - if (Object.is(x, -0)) { - return x; - } - - const y = Math.fround(x); - - if (!Number.isFinite(y)) { - throw makeException(TypeError, "is outside the range of a single-precision floating-point value", opts); - } - - return y; -}; - -exports["unrestricted float"] = (V, opts) => { - const x = toNumber(V, opts); - - if (isNaN(x)) { - return x; - } - - if (Object.is(x, -0)) { - return x; - } - - return Math.fround(x); -}; - -exports.DOMString = function (V, opts = {}) { - if (opts.treatNullAsEmptyString && V === null) { - return ""; - } - - if (typeof V === "symbol") { - throw makeException(TypeError, "is a symbol, which cannot be converted to a string", opts); - } - - const StringCtor = opts.globals ? opts.globals.String : String; - return StringCtor(V); -}; - -exports.ByteString = (V, opts) => { - const x = exports.DOMString(V, opts); - let c; - for (let i = 0; (c = x.codePointAt(i)) !== undefined; ++i) { - if (c > 255) { - throw makeException(TypeError, "is not a valid ByteString", opts); - } - } - - return x; -}; - -exports.USVString = (V, opts) => { - const S = exports.DOMString(V, opts); - const n = S.length; - const U = []; - for (let i = 0; i < n; ++i) { - const c = S.charCodeAt(i); - if (c < 0xD800 || c > 0xDFFF) { - U.push(String.fromCodePoint(c)); - } else if (0xDC00 <= c && c <= 0xDFFF) { - U.push(String.fromCodePoint(0xFFFD)); - } else if (i === n - 1) { - U.push(String.fromCodePoint(0xFFFD)); - } else { - const d = S.charCodeAt(i + 1); - if (0xDC00 <= d && d <= 0xDFFF) { - const a = c & 0x3FF; - const b = d & 0x3FF; - U.push(String.fromCodePoint((2 << 15) + ((2 << 9) * a) + b)); - ++i; - } else { - U.push(String.fromCodePoint(0xFFFD)); - } - } - } - - return U.join(""); -}; - -exports.object = (V, opts) => { - if (type(V) !== "Object") { - throw makeException(TypeError, "is not an object", opts); - } - - return V; -}; - -// Not exported, but used in Function and VoidFunction. - -// Neither Function nor VoidFunction is defined with [TreatNonObjectAsNull], so -// handling for that is omitted. -function convertCallbackFunction(V, opts) { - if (typeof V !== "function") { - throw makeException(TypeError, "is not a function", opts); - } - return V; -} - -const abByteLengthGetter = - Object.getOwnPropertyDescriptor(ArrayBuffer.prototype, "byteLength").get; -const sabByteLengthGetter = - Object.getOwnPropertyDescriptor(SharedArrayBuffer.prototype, "byteLength").get; - -function isNonSharedArrayBuffer(V) { - try { - // This will throw on SharedArrayBuffers, but not detached ArrayBuffers. - // (The spec says it should throw, but the spec conflicts with implementations: https://github.com/tc39/ecma262/issues/678) - abByteLengthGetter.call(V); - - return true; - } catch { - return false; - } -} - -function isSharedArrayBuffer(V) { - try { - sabByteLengthGetter.call(V); - return true; - } catch { - return false; - } -} - -function isArrayBufferDetached(V) { - try { - // eslint-disable-next-line no-new - new Uint8Array(V); - return false; - } catch { - return true; - } -} - -exports.ArrayBuffer = (V, opts = {}) => { - if (!isNonSharedArrayBuffer(V)) { - if (opts.allowShared && !isSharedArrayBuffer(V)) { - throw makeException(TypeError, "is not an ArrayBuffer or SharedArrayBuffer", opts); - } - throw makeException(TypeError, "is not an ArrayBuffer", opts); - } - if (isArrayBufferDetached(V)) { - throw makeException(TypeError, "is a detached ArrayBuffer", opts); - } - - return V; -}; - -const dvByteLengthGetter = - Object.getOwnPropertyDescriptor(DataView.prototype, "byteLength").get; -exports.DataView = (V, opts = {}) => { - try { - dvByteLengthGetter.call(V); - } catch (e) { - throw makeException(TypeError, "is not a DataView", opts); - } - - if (!opts.allowShared && isSharedArrayBuffer(V.buffer)) { - throw makeException(TypeError, "is backed by a SharedArrayBuffer, which is not allowed", opts); - } - if (isArrayBufferDetached(V.buffer)) { - throw makeException(TypeError, "is backed by a detached ArrayBuffer", opts); - } - - return V; -}; - -// Returns the unforgeable `TypedArray` constructor name or `undefined`, -// if the `this` value isn't a valid `TypedArray` object. -// -// https://tc39.es/ecma262/#sec-get-%typedarray%.prototype-@@tostringtag -const typedArrayNameGetter = Object.getOwnPropertyDescriptor( - Object.getPrototypeOf(Uint8Array).prototype, - Symbol.toStringTag -).get; -[ - Int8Array, Int16Array, Int32Array, Uint8Array, - Uint16Array, Uint32Array, Uint8ClampedArray, Float32Array, Float64Array -].forEach(func => { - const name = func.name; - const article = /^[AEIOU]/.test(name) ? "an" : "a"; - exports[name] = (V, opts = {}) => { - if (!ArrayBuffer.isView(V) || typedArrayNameGetter.call(V) !== name) { - throw makeException(TypeError, `is not ${article} ${name} object`, opts); - } - if (!opts.allowShared && isSharedArrayBuffer(V.buffer)) { - throw makeException(TypeError, "is a view on a SharedArrayBuffer, which is not allowed", opts); - } - if (isArrayBufferDetached(V.buffer)) { - throw makeException(TypeError, "is a view on a detached ArrayBuffer", opts); - } - - return V; - }; -}); - -// Common definitions - -exports.ArrayBufferView = (V, opts = {}) => { - if (!ArrayBuffer.isView(V)) { - throw makeException(TypeError, "is not a view on an ArrayBuffer or SharedArrayBuffer", opts); - } - - if (!opts.allowShared && isSharedArrayBuffer(V.buffer)) { - throw makeException(TypeError, "is a view on a SharedArrayBuffer, which is not allowed", opts); - } - - if (isArrayBufferDetached(V.buffer)) { - throw makeException(TypeError, "is a view on a detached ArrayBuffer", opts); - } - return V; -}; - -exports.BufferSource = (V, opts = {}) => { - if (ArrayBuffer.isView(V)) { - if (!opts.allowShared && isSharedArrayBuffer(V.buffer)) { - throw makeException(TypeError, "is a view on a SharedArrayBuffer, which is not allowed", opts); - } - - if (isArrayBufferDetached(V.buffer)) { - throw makeException(TypeError, "is a view on a detached ArrayBuffer", opts); - } - return V; - } - - if (!opts.allowShared && !isNonSharedArrayBuffer(V)) { - throw makeException(TypeError, "is not an ArrayBuffer or a view on one", opts); - } - if (opts.allowShared && !isSharedArrayBuffer(V) && !isNonSharedArrayBuffer(V)) { - throw makeException(TypeError, "is not an ArrayBuffer, SharedArrayBufer, or a view on one", opts); - } - if (isArrayBufferDetached(V)) { - throw makeException(TypeError, "is a detached ArrayBuffer", opts); - } - - return V; -}; - -exports.DOMTimeStamp = exports["unsigned long long"]; - -exports.Function = convertCallbackFunction; - -exports.VoidFunction = convertCallbackFunction; |