mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-22 23:50:19 +00:00
d00b79568f
https://isocpp.github.io/CppCoreGuidelines/CppCoreGuidelines#cother-other-default-operation-rules "The compiler is more likely to get the default semantics right and you cannot implement these functions better than the compiler."
96 lines
2.9 KiB
C++
96 lines
2.9 KiB
C++
/*
|
|
* Copyright (c) 2020, Matthew Olsson <mattco@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <LibJS/Runtime/Error.h>
|
|
#include <LibJS/Runtime/GlobalObject.h>
|
|
#include <LibJS/Runtime/RegExpConstructor.h>
|
|
#include <LibJS/Runtime/RegExpObject.h>
|
|
|
|
namespace JS {
|
|
|
|
RegExpConstructor::RegExpConstructor(GlobalObject& global_object)
|
|
: NativeFunction(vm().names.RegExp.as_string(), *global_object.function_prototype())
|
|
{
|
|
}
|
|
|
|
void RegExpConstructor::initialize(GlobalObject& global_object)
|
|
{
|
|
auto& vm = this->vm();
|
|
NativeFunction::initialize(global_object);
|
|
|
|
// 22.2.4.1 RegExp.prototype, https://tc39.es/ecma262/#sec-regexp.prototype
|
|
define_direct_property(vm.names.prototype, global_object.regexp_prototype(), 0);
|
|
|
|
define_native_accessor(*vm.well_known_symbol_species(), symbol_species_getter, {}, Attribute::Configurable);
|
|
|
|
define_direct_property(vm.names.length, Value(2), Attribute::Configurable);
|
|
}
|
|
|
|
// 22.2.3.1 RegExp ( pattern, flags ), https://tc39.es/ecma262/#sec-regexp-pattern-flags
|
|
ThrowCompletionOr<Value> RegExpConstructor::call()
|
|
{
|
|
auto& vm = this->vm();
|
|
auto& global_object = this->global_object();
|
|
|
|
auto pattern = vm.argument(0);
|
|
auto flags = vm.argument(1);
|
|
|
|
bool pattern_is_regexp = TRY(pattern.is_regexp(global_object));
|
|
|
|
if (pattern_is_regexp && flags.is_undefined()) {
|
|
auto pattern_constructor = TRY(pattern.as_object().get(vm.names.constructor));
|
|
if (same_value(this, pattern_constructor))
|
|
return pattern;
|
|
}
|
|
|
|
return TRY(construct(*this));
|
|
}
|
|
|
|
// 22.2.3.1 RegExp ( pattern, flags ), https://tc39.es/ecma262/#sec-regexp-pattern-flags
|
|
ThrowCompletionOr<Object*> RegExpConstructor::construct(FunctionObject&)
|
|
{
|
|
auto& vm = this->vm();
|
|
auto& global_object = this->global_object();
|
|
|
|
auto pattern = vm.argument(0);
|
|
auto flags = vm.argument(1);
|
|
|
|
bool pattern_is_regexp = TRY(pattern.is_regexp(global_object));
|
|
|
|
Value pattern_value;
|
|
Value flags_value;
|
|
|
|
if (pattern.is_object() && is<RegExpObject>(pattern.as_object())) {
|
|
auto& regexp_pattern = static_cast<RegExpObject&>(pattern.as_object());
|
|
pattern_value = js_string(vm, regexp_pattern.pattern());
|
|
|
|
if (flags.is_undefined())
|
|
flags_value = js_string(vm, regexp_pattern.flags());
|
|
else
|
|
flags_value = flags;
|
|
} else if (pattern_is_regexp) {
|
|
pattern_value = TRY(pattern.as_object().get(vm.names.source));
|
|
|
|
if (flags.is_undefined()) {
|
|
flags_value = TRY(pattern.as_object().get(vm.names.flags));
|
|
} else {
|
|
flags_value = flags;
|
|
}
|
|
} else {
|
|
pattern_value = pattern;
|
|
flags_value = flags;
|
|
}
|
|
|
|
return TRY(regexp_create(global_object, pattern_value, flags_value));
|
|
}
|
|
|
|
// 22.2.4.2 get RegExp [ @@species ], https://tc39.es/ecma262/#sec-get-regexp-@@species
|
|
JS_DEFINE_NATIVE_FUNCTION(RegExpConstructor::symbol_species_getter)
|
|
{
|
|
return vm.this_value(global_object);
|
|
}
|
|
|
|
}
|