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LibJS: Add Array.prototype.unshift()

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This commit is contained in:
Linus Groh 2020-04-13 16:46:27 +01:00 • committed by Andreas Kling
parent 5da1a40ccf
commit 29253bf932
3 changed files with 42 additions and 0 deletions
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11
Libraries/LibJS/Runtime/ArrayPrototype.cpp
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@ -41,6 +41,7 @@ ArrayPrototype::ArrayPrototype()
put_native_function("push", push, 1);
put_native_function("shift", shift, 0);
put_native_function("toString", to_string, 0);
put_native_function("unshift", unshift, 1);
put("length", Value(0));
}
@ -70,6 +71,16 @@ Value ArrayPrototype::push(Interpreter& interpreter)
return Value(array->length());
}
Value ArrayPrototype::unshift(Interpreter& interpreter)
{
auto* array = array_from(interpreter);
if (!array)
return {};
for (size_t i = 0; i < interpreter.argument_count(); ++i)
array->elements().insert(i, interpreter.argument(i));
return Value(array->length());
}
Value ArrayPrototype::pop(Interpreter& interpreter)
{
auto* array = array_from(interpreter);

1
Libraries/LibJS/Runtime/ArrayPrototype.h
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@ -42,6 +42,7 @@ private:
static Value push(Interpreter&);
static Value shift(Interpreter&);
static Value to_string(Interpreter&);
static Value unshift(Interpreter&);
};
}