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/*
* 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/Interpreter.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()
: NativeFunction("String", *interpreter().global_object().function_prototype())
{
define_property("prototype", interpreter().global_object().string_prototype(), 0);
define_property("length", Value(1), Attribute::Configurable);
u8 attr = Attribute::Writable | Attribute::Configurable;
define_native_function("raw", raw, 0, attr);
define_native_function("fromCharCode", from_char_code, 1, attr);
}
StringConstructor::~StringConstructor()
{
}
Value StringConstructor::call(Interpreter& interpreter)
{
if (!interpreter.argument_count())
return js_string(interpreter, "");
auto* string = interpreter.argument(0).to_primitive_string(interpreter);
if (interpreter.exception())
return {};
return string;
}
Value StringConstructor::construct(Interpreter& interpreter)
{
PrimitiveString* primitive_string = nullptr;
if (!interpreter.argument_count())
primitive_string = js_string(interpreter, "");
else
primitive_string = interpreter.argument(0).to_primitive_string(interpreter);
if (!primitive_string)
return {};
return StringObject::create(global_object(), *primitive_string);
}
Value StringConstructor::raw(Interpreter& interpreter)
{
auto* template_object = interpreter.argument(0).to_object(interpreter);
if (interpreter.exception())
return {};
auto raw = template_object->get("raw");
if (interpreter.exception())
return {};
if (raw.is_empty() || raw.is_undefined() || raw.is_null()) {
interpreter.throw_exception<TypeError>(ErrorType::StringRawCannotConvert, raw.is_null() ? "null" : "undefined");
return {};
}
if (!raw.is_array())
return js_string(interpreter, "");
auto* array = static_cast<Array*>(raw.to_object(interpreter));
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 (interpreter.exception())
return {};
if (!result.has_value())
continue;
builder.append(result.value().value.to_string(interpreter));
if (interpreter.exception())
return {};
if (i + 1 < interpreter.argument_count() && i < raw_array_elements.array_like_size() - 1) {
builder.append(interpreter.argument(i + 1).to_string(interpreter));
if (interpreter.exception())
return {};
}
}
return js_string(interpreter, builder.build());
}
Value StringConstructor::from_char_code(Interpreter& interpreter)
{
StringBuilder builder;
for (size_t i = 0; i < interpreter.argument_count(); ++i) {
auto char_code = interpreter.argument(i).to_i32(interpreter);
if (interpreter.exception())
return {};
auto truncated = char_code & 0xffff;
// FIXME: We need an Utf16View :^)
builder.append(Utf32View((u32*)&truncated, 1));
}
return js_string(interpreter, builder.build());
}
}
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