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https://github.com/denoland/deno
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perf: optimize RegExp usage in JS (#19364)
Towards https://github.com/denoland/deno/issues/19330 Shows about 1% improvement in the HTTP benchmark.
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@ -30,7 +30,7 @@ const {
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ArrayPrototypeFilter,
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ObjectEntries,
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ObjectHasOwn,
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RegExpPrototypeTest,
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RegExpPrototypeExec,
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SafeArrayIterator,
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SafeRegExp,
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Symbol,
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@ -102,10 +102,10 @@ function appendHeader(headers, name, value) {
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value = normalizeHeaderValue(value);
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// 2.
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if (!RegExpPrototypeTest(HTTP_TOKEN_CODE_POINT_RE, name)) {
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if (RegExpPrototypeExec(HTTP_TOKEN_CODE_POINT_RE, name) === null) {
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throw new TypeError("Header name is not valid.");
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}
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if (RegExpPrototypeTest(ILLEGAL_VALUE_CHARS, value)) {
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if (RegExpPrototypeExec(ILLEGAL_VALUE_CHARS, value) !== null) {
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throw new TypeError("Header value is not valid.");
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}
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@ -282,7 +282,7 @@ class Headers {
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webidl.requiredArguments(arguments.length, 1, prefix);
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name = webidl.converters["ByteString"](name, prefix, "Argument 1");
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if (!RegExpPrototypeTest(HTTP_TOKEN_CODE_POINT_RE, name)) {
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if (RegExpPrototypeExec(HTTP_TOKEN_CODE_POINT_RE, name) === null) {
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throw new TypeError("Header name is not valid.");
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}
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if (this[_guard] == "immutable") {
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@ -307,7 +307,7 @@ class Headers {
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webidl.requiredArguments(arguments.length, 1, prefix);
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name = webidl.converters["ByteString"](name, prefix, "Argument 1");
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if (!RegExpPrototypeTest(HTTP_TOKEN_CODE_POINT_RE, name)) {
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if (RegExpPrototypeExec(HTTP_TOKEN_CODE_POINT_RE, name) === null) {
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throw new TypeError("Header name is not valid.");
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}
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@ -323,7 +323,7 @@ class Headers {
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webidl.requiredArguments(arguments.length, 1, prefix);
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name = webidl.converters["ByteString"](name, prefix, "Argument 1");
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if (!RegExpPrototypeTest(HTTP_TOKEN_CODE_POINT_RE, name)) {
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if (RegExpPrototypeExec(HTTP_TOKEN_CODE_POINT_RE, name) === null) {
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throw new TypeError("Header name is not valid.");
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}
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@ -351,10 +351,10 @@ class Headers {
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value = normalizeHeaderValue(value);
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// 2.
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if (!RegExpPrototypeTest(HTTP_TOKEN_CODE_POINT_RE, name)) {
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if (RegExpPrototypeExec(HTTP_TOKEN_CODE_POINT_RE, name) === null) {
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throw new TypeError("Header name is not valid.");
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}
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if (RegExpPrototypeTest(ILLEGAL_VALUE_CHARS, value)) {
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if (RegExpPrototypeExec(ILLEGAL_VALUE_CHARS, value) !== null) {
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throw new TypeError("Header value is not valid.");
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}
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@ -36,7 +36,7 @@ const {
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ArrayPrototypeSplice,
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ObjectKeys,
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ObjectPrototypeIsPrototypeOf,
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RegExpPrototypeTest,
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RegExpPrototypeExec,
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StringPrototypeStartsWith,
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Symbol,
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SymbolFor,
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@ -227,7 +227,7 @@ function validateAndNormalizeMethod(m) {
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}
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// Regular path
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if (!RegExpPrototypeTest(HTTP_TOKEN_CODE_POINT_RE, m)) {
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if (RegExpPrototypeExec(HTTP_TOKEN_CODE_POINT_RE, m) === null) {
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throw new TypeError("Method is not valid.");
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}
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const upperCase = byteUpperCase(m);
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@ -37,7 +37,7 @@ const {
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ObjectDefineProperties,
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ObjectPrototypeIsPrototypeOf,
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RangeError,
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RegExpPrototypeTest,
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RegExpPrototypeExec,
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SafeArrayIterator,
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SafeRegExp,
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Symbol,
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@ -179,7 +179,7 @@ function initializeAResponse(response, init, bodyWithType) {
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// 2.
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if (
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init.statusText &&
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!RegExpPrototypeTest(REASON_PHRASE_RE, init.statusText)
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RegExpPrototypeExec(REASON_PHRASE_RE, init.statusText) === null
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) {
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throw new TypeError("Status text is not valid.");
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}
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@ -13,6 +13,7 @@ const {
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MapPrototypeHas,
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MapPrototypeSet,
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RegExpPrototypeTest,
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RegExpPrototypeExec,
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SafeMap,
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SafeMapIterator,
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StringPrototypeReplaceAll,
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@ -197,7 +198,7 @@ function serializeMimeType(mimeType) {
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for (const param of new SafeMapIterator(mimeType.parameters)) {
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serialization += `;${param[0]}=`;
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let value = param[1];
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if (!RegExpPrototypeTest(HTTP_TOKEN_CODE_POINT_RE, value)) {
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if (RegExpPrototypeExec(HTTP_TOKEN_CODE_POINT_RE, value) === null) {
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value = StringPrototypeReplaceAll(value, "\\", "\\\\");
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value = StringPrototypeReplaceAll(value, '"', '\\"');
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value = `"${value}"`;
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@ -59,6 +59,7 @@ const {
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ReflectHas,
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ReflectOwnKeys,
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RegExpPrototypeTest,
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RegExpPrototypeExec,
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SafeRegExp,
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SafeSet,
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SetPrototypeEntries,
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@ -406,7 +407,7 @@ converters.DOMString = function (V, prefix, context, opts = {}) {
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const IS_BYTE_STRING = new SafeRegExp(/^[\x00-\xFF]*$/);
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converters.ByteString = (V, prefix, context, opts) => {
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const x = converters.DOMString(V, prefix, context, opts);
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if (!RegExpPrototypeTest(IS_BYTE_STRING, x)) {
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if (RegExpPrototypeExec(IS_BYTE_STRING, x) === null) {
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throw makeException(
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TypeError,
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"is not a valid ByteString",
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@ -33,7 +33,7 @@ const {
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ObjectDefineProperties,
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ObjectPrototypeIsPrototypeOf,
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PromisePrototypeThen,
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RegExpPrototypeTest,
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RegExpPrototypeExec,
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SafeSet,
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SetPrototypeGetSize,
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// TODO(lucacasonato): add SharedArrayBuffer to primordials
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@ -256,7 +256,8 @@ class WebSocket extends EventTarget {
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if (
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ArrayPrototypeSome(
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protocols,
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(protocol) => !RegExpPrototypeTest(HTTP_TOKEN_CODE_POINT_RE, protocol),
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(protocol) =>
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RegExpPrototypeExec(HTTP_TOKEN_CODE_POINT_RE, protocol) === null,
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)
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) {
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throw new DOMException(
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