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381 commits

Author SHA1 Message Date
Andreas Kling
afdba94f63 LibJS: Fix expectations in the function-TypeError.js test 
They now match the new, more verbose error messages.
 2020-04-19 14:51:47 +02:00
Andreas Kling
b251091a6a LibJS: CallExpression shouldn't throw TypeError or non-constructor call 
This unbreaks the entire test suite. :^)
 2020-04-19 14:51:47 +02:00
Andreas Kling
2a9e29fbb8 LibJS: Add DeferGC, a RAII way to prevent GC temporarily 2020-04-19 12:09:32 +02:00
Linus Groh
03f2024b6e LibJS: Improve CallExpression::execute()'s error messages 2020-04-19 11:00:39 +02:00
Kesse Jones
856ab9c600 LibJS: Add Array.prototype.slice 2020-04-19 02:09:06 +02:00
Linus Groh
71d6459b7f LibJS: Use AK::String::index_of() for StringPrototype::index_of() 2020-04-18 22:24:22 +02:00
Stephan Unverwerth
bf5b251684 LibJS: Allow reserved words as keys in object expressions. 2020-04-18 22:23:20 +02:00
Stephan Unverwerth
cebb619f8e LibJS: Fix parsing of IfStatement, fixes #1829 2020-04-18 14:04:24 +02:00
Andreas Kling
3072f9fd82 LibJS: Move the empty object shape from Interpreter to GlobalObject 
The big remaining hurdle before a GlobalObject-agnostic Interpreter is
the fact that Interpreter owns and vends the GlobalObject :^)
 2020-04-18 13:59:20 +02:00
Andreas Kling
fca08bd000 LibJS: Move builtin prototypes to the global object 
This moves us towards being able to run JavaScript in different global
objects without allocating a separate GC heap.
 2020-04-18 13:24:45 +02:00
Linus Groh
d14ddb6461 LibJS: Implement nullish coalescing operator (??) 2020-04-18 12:34:13 +02:00
Andreas Kling
30de1f610d LibJS: Use enumerator macro to mark all constructors in GlobalObject 
We were forgetting to mark the String constructor! So this patch fixes
that and ensures we won't forget anyone in the future.
 2020-04-18 11:02:05 +02:00
Andreas Kling
bc1ece7f37 LibJS+LibWeb: Pass prototype to Object constructor 
Everyone who constructs an Object must now pass a prototype object when
applicable. There's still a fair amount of code that passes something
fetched from the Interpreter, but this brings us closer to being able
to detach prototypes from Interpreter eventually.
 2020-04-18 11:00:55 +02:00
Andreas Kling
f6d57c82f6 LibJS: Pass prototype to Function constructors 2020-04-18 10:28:22 +02:00
Andreas Kling
205ac0090d LibJS: Pass prototype to Error constructors 2020-04-18 10:28:22 +02:00
Andreas Kling
0df4d2823a LibJS: Pass prototype to Date constructor 2020-04-18 10:28:22 +02:00
Andreas Kling
2a15323029 LibJS: Pass prototype to BooleanObject constructor 2020-04-18 10:28:22 +02:00
Andreas Kling
298c606200 LibJS: Pass prototype to StringObject constructor 2020-04-18 10:28:22 +02:00
Andreas Kling
cf702a13b9 LibJS: Pass prototype to NumberObject constructor 2020-04-18 10:28:22 +02:00
Andreas Kling
2d7b495244 LibJS: Make Array constructor take its prototype 
Let's start moving towards native JS objects taking their prototype as
a constructor argument.

This will eventually allow us to move prototypes off of Interpreter and
into GlobalObject.
 2020-04-18 10:28:22 +02:00
Kesse Jones
4931c0feda LibJS: Add Array.prototype.concat 2020-04-17 16:14:28 +02:00
Stephan Unverwerth
63e1ea7819
LibJS: Add test for semicolon insertion (#1828) 2020-04-17 15:52:38 +02:00
Stephan Unverwerth
19cdda8000 LibJS: Fix semicolon insertion 2020-04-17 15:32:20 +02:00
Stephan Unverwerth
07f838dc4e LibJS: Implement automatic semicolon insertion 2020-04-17 15:22:31 +02:00
Andreas Kling
72df9c7417 LibJS: Dump a JavaScript backtrace when throwing exceptions 2020-04-16 20:23:03 +02:00
Kesse Jones
b0b204822f LibJS: Add String.prototype.substring 2020-04-16 18:47:24 +02:00
Andreas Kling
60d1ef6af4 LibJS: Remove no-op code in ScriptFunction constructor 2020-04-16 16:58:44 +02:00
Kesse Jones
7725b1970e LibJS: Add String.prototype.concat 2020-04-16 16:36:51 +02:00
Andreas Kling
e72a537033 LibJS: Make Value::m_type default to Type::Empty 
This is not effectful since all constructors overwrite the type anyway,
but it seems reasonable that the default value of m_type would match
what Value() would give you.
 2020-04-16 16:11:11 +02:00
Andreas Kling
1b391d78ae LibJS: Allow cells to mark null pointers 
This simplifies the cell visiting functions by letting them not worry
about the pointers they pass to the visitor being null.
 2020-04-16 16:10:38 +02:00
Andreas Kling
13865c7c3d LibJS: Remove unreachable code in Interpreter::enter_scope() 
Functions are handled and short-circuited at the head of enter_scope().
 2020-04-16 10:25:00 +02:00
Andreas Kling
9b9086dcf0 LibJS: Oops, fix StringPrototype build 2020-04-16 10:24:32 +02:00
Andreas Kling
1108dd1659 LibJS: Add some missing |this| checks in StringPrototype 
Also some style tweaks
 2020-04-16 10:04:21 +02:00
Linus Groh
640a24dce8 LibJS: Remove outdated FIXME now that we have lexical environments 2020-04-16 09:41:07 +02:00
Andreas Kling
54c95d44ce LibJS: Functions with no variables don't need to create environment 
Just hand out the parent environment instead.
 2020-04-15 22:17:17 +02:00
Andreas Kling
ed80952cb6 LibJS: Introduce LexicalEnvironment 
This patch replaces the old variable lookup logic with a new one based
on lexical environments.

This brings us closer to the way JavaScript is actually specced, and
also gives us some basic support for closures.

The interpreter's call stack frames now have a pointer to the lexical
environment for that frame. Each lexical environment can have a chain
of parent environments.

Before calling a Function, we first ask it to create_environment().
This gives us a new LexicalEnvironment for that function, which has the
function's lexical parent's environment as its parent. This allows
inner functions to access variables in their outer function:

    function foo() { <-- LexicalEnvironment A
        var x = 1;
        function() { <-- LexicalEnvironment B (parent: A)
            console.log(x);
        }
    }

If we return the result of a function expression from a function, that
new function object will keep a reference to its parent environment,
which is how we get closures. :^)

I'm pretty sure I didn't get everything right here, but it's a pretty
good start. This is quite a bit slower than before, but also correcter!
 2020-04-15 22:07:20 +02:00
Linus Groh
cea950fd70 LibJS: Support empty values in array expression 2020-04-15 21:23:06 +02:00
Linus Groh
d30db07048 LibJS: Implement void operator 2020-04-15 19:12:51 +02:00
Andreas Kling
beda751d33 LibJS: Math.round() should call round() instead of roundf() 
Neither LibM functions are very strong right now, but let's at least
call the right one.
 2020-04-15 19:12:10 +02:00
Linus Groh
a8406aa117 LibJS: Check length property of Array.prototype.join in its test 
I assume this was copied from the Array.prototype.push() test :^)
 2020-04-15 12:20:08 +02:00
Andreas Kling
ad2aac5fde LibJS: Add Array.prototype.join() 
And share the code with Array.prototype.toString() :^)
 2020-04-15 10:06:01 +02:00
Andreas Kling
fa30355194 LibJS: Adding two values should convert them to primitives first 2020-04-15 09:48:25 +02:00
Andreas Kling
63499c2c9f LibJS: Pass the Interpreter& to binary/logical/unary helpers 2020-04-15 09:28:41 +02:00
Kesse Jones
994f1a79ad
LibJS: Add String.prototype.{trim, trimStart, trimEnd} (#1792) 2020-04-15 08:47:40 +02:00
Linus Groh
1dee4d0049 LibJS: Redirect stderr to /dev/null when running js in run-tests 
This "mutes" output from dbg() calls - which is not an issue inside
serenity itself but if the script is run on the host machine and stdout
and stderr are displayed in the same terminal window.
 2020-04-14 18:38:55 +02:00
Linus Groh
823fb9d9aa LibJS: Add missing load("test-common.js") to comments-basic.js 
This fixes the test which is currently failing with
"ReferenceError: 'assert' not known".
 2020-04-14 17:26:57 +02:00
Linus Groh
f7df521073 LibJS: Add Array.prototype.map() 2020-04-14 13:40:04 +02:00
Linus Groh
f03d005bc4 LibJS: Add Array.prototype.filter() 2020-04-14 13:40:04 +02:00
Linus Groh
866172a721 LibJS: Add Array.prototype.forEach() 2020-04-14 13:40:04 +02:00
Linus Groh
29253bf932 LibJS: Add Array.prototype.unshift() 2020-04-14 13:40:04 +02:00