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LibJS: Implement Number.isFinite()
Like the global isFinite() without the number coercion.
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6 changed files with 40 additions and 2 deletions
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@ -144,8 +144,7 @@ Value GlobalObject::is_nan(Interpreter& interpreter)
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Value GlobalObject::is_finite(Interpreter& interpreter)
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{
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auto value = interpreter.argument(0).to_number();
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return Value(!value.is_infinity() && !value.is_nan());
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return Value(interpreter.argument(0).to_number().is_finite_number());
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}
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}
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@ -40,6 +40,7 @@ namespace JS {
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NumberConstructor::NumberConstructor()
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: NativeFunction("Number", *interpreter().global_object().function_prototype())
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{
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put_native_function("isFinite", is_finite, 1);
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put_native_function("isSafeInteger", is_safe_integer, 1);
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put("prototype", interpreter().global_object().number_prototype());
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@ -73,6 +74,11 @@ Value NumberConstructor::construct(Interpreter& interpreter)
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return NumberObject::create(interpreter.global_object(), number);
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}
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Value NumberConstructor::is_finite(Interpreter& interpreter)
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{
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return Value(interpreter.argument(0).is_finite_number());
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}
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Value NumberConstructor::is_safe_integer(Interpreter& interpreter)
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{
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if (!interpreter.argument(0).is_number())
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@ -42,6 +42,7 @@ private:
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virtual bool has_constructor() const override { return true; }
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virtual const char* class_name() const override { return "NumberConstructor"; }
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static Value is_finite(Interpreter&);
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static Value is_safe_integer(Interpreter&);
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};
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