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LibJS: Add object literal getter/setter shorthand

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Adds support for the following syntax:

let foo = {
    get x() {
        // ...
    },
    set x(value) {
        // ...
    }
}
This commit is contained in:
Matthew Olsson
2020-05-21 17:28:28 -07:00
committed by Andreas Kling
parent 3a90a01dd4
commit c35732c011
4 changed files with 117 additions and 16 deletions
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33
Libraries/LibJS/AST.cpp
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@@ -31,6 +31,7 @@
#include <AK/StringBuilder.h>
#include <LibJS/AST.h>
#include <LibJS/Interpreter.h>
#include <LibJS/Runtime/Accessor.h>
#include <LibJS/Runtime/Array.h>
#include <LibJS/Runtime/Error.h>
#include <LibJS/Runtime/GlobalObject.h>
@@ -1129,7 +1130,7 @@ Value ObjectExpression::execute(Interpreter& interpreter) const
if (interpreter.exception())
return {};
if (property.is_spread()) {
if (property.type() == ObjectProperty::Type::Spread) {
if (key_result.is_array()) {
auto& array_to_spread = static_cast<Array&>(key_result.as_object());
auto& elements = array_to_spread.elements();
@@ -1163,8 +1164,34 @@ Value ObjectExpression::execute(Interpreter& interpreter) const
auto value = property.value().execute(interpreter);
if (interpreter.exception())
return {};
update_function_name(value, key);
object->put(key, value);
String name = key;
if (property.type() == ObjectProperty::Type::Getter) {
name = String::format("get %s", key.characters());
} else if (property.type() == ObjectProperty::Type::Setter) {
name = String::format("set %s", key.characters());
}
update_function_name(value, name);
if (property.type() == ObjectProperty::Type::Getter || property.type() == ObjectProperty::Type::Setter) {
Value getter;
Value setter;
auto existing_property_metadata = object->shape().lookup(key);
Value existing_property;
if (existing_property_metadata.has_value())
existing_property = object->get_direct(existing_property_metadata.value().offset);
if (property.type() == ObjectProperty::Type::Getter) {
getter = value;
setter = existing_property.is_accessor() ? existing_property.as_accessor().setter() : Value();
} else {
getter = existing_property.is_accessor() ? existing_property.as_accessor().getter() : Value();
setter = value;
}
object->put_own_property(*object, key, Attribute::Configurable | Attribute::Enumerable, Accessor::create(interpreter, getter, setter), Object::PutOwnPropertyMode::DefineProperty);
} else {
object->put(key, value);
}
}
return object;
}