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js: Add REPL pretty-printing handler for Promises

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Linus Groh 2021-04-01 22:14:05 +02:00 • committed by Andreas Kling
parent ade3adcc7a
commit 9da13302ab
1 changed files with 30 additions and 1 deletions
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31
Userland/Utilities/js.cpp
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@ -1,6 +1,6 @@
/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2020, Linus Groh <mail@linusgroh.de>
* Copyright (c) 2020-2021, Linus Groh <mail@linusgroh.de>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@ -47,6 +47,7 @@
#include <LibJS/Runtime/NumberObject.h>
#include <LibJS/Runtime/Object.h>
#include <LibJS/Runtime/PrimitiveString.h>
#include <LibJS/Runtime/Promise.h>
#include <LibJS/Runtime/ProxyObject.h>
#include <LibJS/Runtime/RegExpObject.h>
#include <LibJS/Runtime/ScriptFunction.h>
@ -271,6 +272,32 @@ static void print_proxy_object(const JS::Object& object, HashTable<JS::Object*>&
print_value(&proxy_object.handler(), seen_objects);
}
static void print_promise(const JS::Object& object, HashTable<JS::Object*>& seen_objects)
{
auto& promise = static_cast<const JS::Promise&>(object);
print_type("Promise");
switch (promise.state()) {
case JS::Promise::State::Pending:
out("\n state: ");
out("\033[36;1mPending\033[0m");
break;
case JS::Promise::State::Fulfilled:
out("\n state: ");
out("\033[32;1mFulfilled\033[0m");
out("\n result: ");
print_value(promise.result(), seen_objects);
break;
case JS::Promise::State::Rejected:
out("\n state: ");
out("\033[31;1mRejected\033[0m");
out("\n result: ");
print_value(promise.result(), seen_objects);
break;
default:
VERIFY_NOT_REACHED();
}
}
static void print_array_buffer(const JS::Object& object, HashTable<JS::Object*>& seen_objects)
{
auto& array_buffer = static_cast<const JS::ArrayBuffer&>(object);
@ -367,6 +394,8 @@ static void print_value(JS::Value value, HashTable<JS::Object*>& seen_objects)
return print_regexp_object(object, seen_objects);
if (is<JS::ProxyObject>(object))
return print_proxy_object(object, seen_objects);
if (is<JS::Promise>(object))
return print_promise(object, seen_objects);
if (is<JS::ArrayBuffer>(object))
return print_array_buffer(object, seen_objects);
if (object.is_typed_array())