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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:22:09 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:22:09 +0000 |
commit | 43a97878ce14b72f0981164f87f2e35e14151312 (patch) | |
tree | 620249daf56c0258faa40cbdcf9cfba06de2a846 /js/src/builtin/Reflect.js | |
parent | Initial commit. (diff) | |
download | firefox-upstream.tar.xz firefox-upstream.zip |
Adding upstream version 110.0.1.upstream/110.0.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | js/src/builtin/Reflect.js | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/js/src/builtin/Reflect.js b/js/src/builtin/Reflect.js new file mode 100644 index 0000000000..936594b103 --- /dev/null +++ b/js/src/builtin/Reflect.js @@ -0,0 +1,182 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +// ES2017 draft rev a785b0832b071f505a694e1946182adeab84c972 +// 7.3.17 CreateListFromArrayLike (obj [ , elementTypes ] ) +function CreateListFromArrayLikeForArgs(obj) { + // Step 1 (not applicable). + + // Step 2. + assert( + IsObject(obj), + "object must be passed to CreateListFromArrayLikeForArgs" + ); + + // Step 3. + var len = ToLength(obj.length); + + // This version of CreateListFromArrayLike is only used for argument lists. + if (len > MAX_ARGS_LENGTH) { + ThrowRangeError(JSMSG_TOO_MANY_ARGUMENTS); + } + + // Steps 4-6. + var list = std_Array(len); + for (var i = 0; i < len; i++) { + DefineDataProperty(list, i, obj[i]); + } + + // Step 7. + return list; +} + +// ES2017 draft rev a785b0832b071f505a694e1946182adeab84c972 +// 26.1.1 Reflect.apply ( target, thisArgument, argumentsList ) +function Reflect_apply(target, thisArgument, argumentsList) { + // Step 1. + if (!IsCallable(target)) { + ThrowTypeError(JSMSG_NOT_FUNCTION, DecompileArg(0, target)); + } + + // Step 2. + if (!IsObject(argumentsList)) { + ThrowTypeError( + JSMSG_OBJECT_REQUIRED_ARG, + "`argumentsList`", + "Reflect.apply", + ToSource(argumentsList) + ); + } + + // Steps 2-4. + return callFunction(std_Function_apply, target, thisArgument, argumentsList); +} + +// ES2017 draft rev a785b0832b071f505a694e1946182adeab84c972 +// 26.1.2 Reflect.construct ( target, argumentsList [ , newTarget ] ) +function Reflect_construct(target, argumentsList /*, newTarget*/) { + // Step 1. + if (!IsConstructor(target)) { + ThrowTypeError(JSMSG_NOT_CONSTRUCTOR, DecompileArg(0, target)); + } + + // Steps 2-3. + var newTarget; + if (arguments.length > 2) { + newTarget = arguments[2]; + if (!IsConstructor(newTarget)) { + ThrowTypeError(JSMSG_NOT_CONSTRUCTOR, DecompileArg(2, newTarget)); + } + } else { + newTarget = target; + } + + // Step 4. + if (!IsObject(argumentsList)) { + ThrowTypeError( + JSMSG_OBJECT_REQUIRED_ARG, + "`argumentsList`", + "Reflect.construct", + ToSource(argumentsList) + ); + } + + // Fast path when we can avoid calling CreateListFromArrayLikeForArgs(). + var args = + IsPackedArray(argumentsList) && argumentsList.length <= MAX_ARGS_LENGTH + ? argumentsList + : CreateListFromArrayLikeForArgs(argumentsList); + + // Step 5. + switch (args.length) { + case 0: + return constructContentFunction(target, newTarget); + case 1: + return constructContentFunction(target, newTarget, SPREAD(args, 1)); + case 2: + return constructContentFunction(target, newTarget, SPREAD(args, 2)); + case 3: + return constructContentFunction(target, newTarget, SPREAD(args, 3)); + case 4: + return constructContentFunction(target, newTarget, SPREAD(args, 4)); + case 5: + return constructContentFunction(target, newTarget, SPREAD(args, 5)); + case 6: + return constructContentFunction(target, newTarget, SPREAD(args, 6)); + case 7: + return constructContentFunction(target, newTarget, SPREAD(args, 7)); + case 8: + return constructContentFunction(target, newTarget, SPREAD(args, 8)); + case 9: + return constructContentFunction(target, newTarget, SPREAD(args, 9)); + case 10: + return constructContentFunction(target, newTarget, SPREAD(args, 10)); + case 11: + return constructContentFunction(target, newTarget, SPREAD(args, 11)); + case 12: + return constructContentFunction(target, newTarget, SPREAD(args, 12)); + default: + return ConstructFunction(target, newTarget, args); + } +} + +// ES2017 draft rev 6859bb9ccaea9c6ede81d71e5320e3833b92cb3e +// 26.1.3 Reflect.defineProperty ( target, propertyKey, attributes ) +function Reflect_defineProperty(obj, propertyKey, attributes) { + // Steps 1-4. + return ObjectOrReflectDefineProperty(obj, propertyKey, attributes, false); +} + +// ES2017 draft rev 6859bb9ccaea9c6ede81d71e5320e3833b92cb3e +// 26.1.6 Reflect.getOwnPropertyDescriptor ( target, propertyKey ) +function Reflect_getOwnPropertyDescriptor(target, propertyKey) { + // Step 1. + if (!IsObject(target)) { + ThrowTypeError(JSMSG_OBJECT_REQUIRED, DecompileArg(0, target)); + } + + // Steps 2-3. + // The other steps are identical to Object.getOwnPropertyDescriptor(). + return ObjectGetOwnPropertyDescriptor(target, propertyKey); +} + +// ES2017 draft rev a785b0832b071f505a694e1946182adeab84c972 +// 26.1.8 Reflect.has ( target, propertyKey ) +function Reflect_has(target, propertyKey) { + // Step 1. + if (!IsObject(target)) { + ThrowTypeError( + JSMSG_OBJECT_REQUIRED_ARG, + "`target`", + "Reflect.has", + ToSource(target) + ); + } + + // Steps 2-3 are identical to the runtime semantics of the "in" operator. + return propertyKey in target; +} + +// ES2018 draft rev 0525bb33861c7f4e9850f8a222c89642947c4b9c +// 26.1.5 Reflect.get ( target, propertyKey [ , receiver ] ) +function Reflect_get(target, propertyKey /*, receiver*/) { + // Step 1. + if (!IsObject(target)) { + ThrowTypeError( + JSMSG_OBJECT_REQUIRED_ARG, + "`target`", + "Reflect.get", + ToSource(target) + ); + } + + // Step 3 (reordered). + if (arguments.length > 2) { + // Steps 2, 4. + return getPropertySuper(target, propertyKey, arguments[2]); + } + + // Steps 2, 4. + return target[propertyKey]; +} |