Libraries: Move to Userland/Libraries/

1 files changed, 135 insertions, 0 deletions

diff --git a/Userland/Libraries/LibJS/Runtime/StringConstructor.cpp b/Userland/Libraries/LibJS/Runtime/StringConstructor.cpp
new file mode 100644
index 0000000000..50872f2387
--- /dev/null
+++ b/Userland/Libraries/LibJS/Runtime/StringConstructor.cpp
@@ -0,0 +1,135 @@
+/*
+ * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
+ * 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 <AK/StringBuilder.h>
+#include <AK/Utf32View.h>
+#include <LibJS/Runtime/Array.h>
+#include <LibJS/Runtime/Error.h>
+#include <LibJS/Runtime/GlobalObject.h>
+#include <LibJS/Runtime/StringConstructor.h>
+#include <LibJS/Runtime/StringObject.h>
+
+namespace JS {
+
+StringConstructor::StringConstructor(GlobalObject& global_object)
+    : NativeFunction(vm().names.String, *global_object.function_prototype())
+{
+}
+
+void StringConstructor::initialize(GlobalObject& global_object)
+{
+    auto& vm = this->vm();
+    NativeFunction::initialize(global_object);
+    define_property(vm.names.prototype, global_object.string_prototype(), 0);
+    define_property(vm.names.length, Value(1), Attribute::Configurable);
+
+    u8 attr = Attribute::Writable | Attribute::Configurable;
+    define_native_function(vm.names.raw, raw, 1, attr);
+    define_native_function(vm.names.fromCharCode, from_char_code, 1, attr);
+}
+
+StringConstructor::~StringConstructor()
+{
+}
+
+Value StringConstructor::call()
+{
+    if (!vm().argument_count())
+        return js_string(heap(), "");
+    if (vm().argument(0).is_symbol())
+        return js_string(heap(), vm().argument(0).as_symbol().to_string());
+    auto* string = vm().argument(0).to_primitive_string(global_object());
+    if (vm().exception())
+        return {};
+    return string;
+}
+
+Value StringConstructor::construct(Function&)
+{
+    PrimitiveString* primitive_string = nullptr;
+    if (!vm().argument_count())
+        primitive_string = js_string(vm(), "");
+    else
+        primitive_string = vm().argument(0).to_primitive_string(global_object());
+    if (!primitive_string)
+        return {};
+    return StringObject::create(global_object(), *primitive_string);
+}
+
+JS_DEFINE_NATIVE_FUNCTION(StringConstructor::raw)
+{
+    auto* template_object = vm.argument(0).to_object(global_object);
+    if (vm.exception())
+        return {};
+
+    auto raw = template_object->get(vm.names.raw);
+    if (vm.exception())
+        return {};
+    if (raw.is_empty() || raw.is_nullish()) {
+        vm.throw_exception<TypeError>(global_object, ErrorType::StringRawCannotConvert, raw.is_null() ? "null" : "undefined");
+        return {};
+    }
+    if (!raw.is_array())
+        return js_string(vm, "");
+
+    auto* array = static_cast<Array*>(raw.to_object(global_object));
+    auto& raw_array_elements = array->indexed_properties();
+    StringBuilder builder;
+
+    for (size_t i = 0; i < raw_array_elements.array_like_size(); ++i) {
+        auto result = raw_array_elements.get(array, i);
+        if (vm.exception())
+            return {};
+        if (!result.has_value())
+            continue;
+        builder.append(result.value().value.to_string(global_object));
+        if (vm.exception())
+            return {};
+        if (i + 1 < vm.argument_count() && i < raw_array_elements.array_like_size() - 1) {
+            builder.append(vm.argument(i + 1).to_string(global_object));
+            if (vm.exception())
+                return {};
+        }
+    }
+
+    return js_string(vm, builder.build());
+}
+
+JS_DEFINE_NATIVE_FUNCTION(StringConstructor::from_char_code)
+{
+    StringBuilder builder;
+    for (size_t i = 0; i < vm.argument_count(); ++i) {
+        auto char_code = vm.argument(i).to_i32(global_object);
+        if (vm.exception())
+            return {};
+        auto truncated = char_code & 0xffff;
+        // FIXME: We need an Utf16View :^)
+        builder.append(Utf32View((u32*)&truncated, 1));
+    }
+    return js_string(vm, builder.build());
+}
+
+}