LibJS: Add Number()

Libraries/LibJS/Runtime/NumberConstructor.cpp

@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2020, Linus Groh <mail@linusgroh.de>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <LibJS/Interpreter.h>
+#include <LibJS/Runtime/Error.h>
+#include <LibJS/Runtime/NumberConstructor.h>
+#include <LibJS/Runtime/NumberObject.h>
+
+namespace JS {
+
+NumberConstructor::NumberConstructor()
+{
+    put("prototype", interpreter().number_prototype());
+    put("length", Value(1));
+}
+
+NumberConstructor::~NumberConstructor()
+{
+}
+
+Value NumberConstructor::call(Interpreter& interpreter)
+{
+    if (!interpreter.argument_count())
+        return Value(0);
+    return interpreter.argument(0).to_number();
+}
+
+Value NumberConstructor::construct(Interpreter& interpreter)
+{
+    double number;
+    if (!interpreter.argument_count())
+        number = 0;
+    else
+        number = interpreter.argument(0).to_number().as_double();
+    return Value(interpreter.heap().allocate<NumberObject>(number));
+}
+
+}