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LibJS: Add Array.prototype.some

This commit is contained in:
Kesse Jones 2020-04-27 20:41:57 -03:00 committed by Andreas Kling
parent c14fedd562
commit 1c4d776ccc
3 changed files with 74 additions and 0 deletions

View file

@ -61,6 +61,7 @@ ArrayPrototype::ArrayPrototype()
put_native_function("includes", includes, 1, attr);
put_native_function("find", find, 1, attr);
put_native_function("findIndex", find_index, 1, attr);
put_native_function("some", some, 1, attr);
put("length", Value(0), Attribute::Configurable);
}
@ -501,4 +502,41 @@ Value ArrayPrototype::find_index(Interpreter& interpreter)
return Value(-1);
}
Value ArrayPrototype::some(Interpreter& interpreter)
{
auto* array = array_from(interpreter);
if (!array)
return {};
auto* callback = callback_from_args(interpreter, "some");
if (!callback)
return {};
auto this_value = interpreter.argument(1);
auto array_size = array->elements().size();
for (size_t i = 0; i < array_size; ++i) {
if (i >= array->elements().size())
break;
auto value = array->elements().at(i);
if (value.is_empty())
continue;
MarkedValueList arguments(interpreter.heap());
arguments.append(value);
arguments.append(Value((i32)i));
arguments.append(array);
auto result = interpreter.call(callback, this_value, move(arguments));
if (interpreter.exception())
return {};
if (result.to_boolean())
return Value(true);
}
return Value(false);
}
}

View file

@ -56,5 +56,7 @@ private:
static Value includes(Interpreter&);
static Value find(Interpreter&);
static Value find_index(Interpreter&);
static Value some(Interpreter&);
};
}

View file

@ -0,0 +1,34 @@
load("test-common.js");
try {
assert(Array.prototype.some.length === 1);
assertThrowsError(() => {
[].some(undefined);
}, {
error: TypeError,
message: "undefined is not a function"
});
var array = ["hello", "friends", 1, 2, false, -42, { name: "serenityos"}];
assert(array.some(value => value === "hello") === true);
assert(array.some(value => value === "serenity") === false);
assert(array.some((value, index, arr) => index === 1) === true);
assert(array.some(value => value == "1") === true);
assert(array.some(value => value === 1) === true);
assert(array.some(value => value === 13) === false);
assert(array.some(value => typeof(value) !== "string") === true);
assert(array.some(value => typeof(value) === "boolean") === true);
assert(array.some(value => value > 1) === true);
assert(array.some(value => value > 1 && value < 3) === true);
assert(array.some(value => value > 100) === false);
assert(array.some(value => value < 0) === true);
assert(array.some(value => array.pop()) === true);
assert(["", "hello", "friends", "serenity"].some(value => value.length === 0) === true);
assert([].some(value => value === 1) === false);
console.log("PASS");
} catch (e) {
console.log("FAIL: " + e);
}