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LibJS: Add Array.prototype.some
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3 changed files with 74 additions and 0 deletions
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@ -61,6 +61,7 @@ ArrayPrototype::ArrayPrototype()
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put_native_function("includes", includes, 1, attr);
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put_native_function("find", find, 1, attr);
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put_native_function("findIndex", find_index, 1, attr);
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put_native_function("some", some, 1, attr);
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put("length", Value(0), Attribute::Configurable);
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}
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@ -501,4 +502,41 @@ Value ArrayPrototype::find_index(Interpreter& interpreter)
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return Value(-1);
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}
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Value ArrayPrototype::some(Interpreter& interpreter)
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{
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auto* array = array_from(interpreter);
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if (!array)
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return {};
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auto* callback = callback_from_args(interpreter, "some");
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if (!callback)
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return {};
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auto this_value = interpreter.argument(1);
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auto array_size = array->elements().size();
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for (size_t i = 0; i < array_size; ++i) {
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if (i >= array->elements().size())
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break;
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auto value = array->elements().at(i);
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if (value.is_empty())
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continue;
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MarkedValueList arguments(interpreter.heap());
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arguments.append(value);
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arguments.append(Value((i32)i));
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arguments.append(array);
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auto result = interpreter.call(callback, this_value, move(arguments));
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if (interpreter.exception())
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return {};
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if (result.to_boolean())
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return Value(true);
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}
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return Value(false);
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}
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}
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@ -56,5 +56,7 @@ private:
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static Value includes(Interpreter&);
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static Value find(Interpreter&);
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static Value find_index(Interpreter&);
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static Value some(Interpreter&);
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};
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}
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