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| author | Luke <luke.wilde@live.co.uk> | 2021-05-21 21:25:09 +0100 |
|---|---|---|
| committer | Linus Groh <mail@linusgroh.de> | 2021-05-21 22:52:35 +0100 |
| commit | 6f1688279a976ea382e229de08cd34f48dfd7e47 (patch) | |
| tree | 5dfc20317f58ee5c49f472f10ad2237675264da0 /Userland | |
| parent | 7d12f49e7488399846228acc89a62b4466d755c6 (diff) | |
| download | serenity-6f1688279a976ea382e229de08cd34f48dfd7e47.zip | |
LibJS: Expose BYTES_PER_ELEMENT on each TypedArray
Diffstat (limited to 'Userland')
| -rw-r--r-- | Userland/Libraries/LibJS/Runtime/TypedArray.cpp | 2 | ||||
| -rw-r--r-- | Userland/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.BYTES_PER_ELEMENT.js | 18 |
2 files changed, 20 insertions, 0 deletions
diff --git a/Userland/Libraries/LibJS/Runtime/TypedArray.cpp b/Userland/Libraries/LibJS/Runtime/TypedArray.cpp index eaf542a9f6..a9bfef012d 100644 --- a/Userland/Libraries/LibJS/Runtime/TypedArray.cpp +++ b/Userland/Libraries/LibJS/Runtime/TypedArray.cpp @@ -194,6 +194,8 @@ void TypedArrayBase::visit_edges(Visitor& visitor) PrototypeName::PrototypeName(GlobalObject& global_object) \ : Object(*global_object.typed_array_prototype()) \ { \ + auto& vm = this->vm(); \ + define_property(vm.names.BYTES_PER_ELEMENT, Value((i32)sizeof(Type)), 0); \ } \ PrototypeName::~PrototypeName() { } \ \ diff --git a/Userland/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.BYTES_PER_ELEMENT.js b/Userland/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.BYTES_PER_ELEMENT.js new file mode 100644 index 0000000000..3d221eebd9 --- /dev/null +++ b/Userland/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.BYTES_PER_ELEMENT.js @@ -0,0 +1,18 @@ +// Update when more typed arrays get added +const TYPED_ARRAYS = [ + { array: Uint8Array, expected: 1 }, + { array: Uint16Array, expected: 2 }, + { array: Uint32Array, expected: 4 }, + { array: Int8Array, expected: 1 }, + { array: Int16Array, expected: 2 }, + { array: Int32Array, expected: 4 }, + { array: Float32Array, expected: 4 }, + { array: Float64Array, expected: 8 }, +]; + +test("basic functionality", () => { + TYPED_ARRAYS.forEach(T => { + const typedArray = new T.array(); + expect(typedArray.BYTES_PER_ELEMENT).toBe(T.expected); + }); +}); |