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The fact that they *are* subclasses is an implementation detail and
should not be highlighted. The spec calls these NativeErrors, so let's
use that.
Also added a comment explaining *why* they inherit from Error - I was
about to change that :^)
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The property name in an object literal can either be a literal or a
computed name, in which case any AssignmentExpression can be used, we
now only parse AssignmentExpression instead of the previous incorrect
behaviour which allowed any Expression (Specifically, comma
expressions).
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This avoid confusion in the order of the multiple boolean parameters
that exist.
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Doing these as custom classes might be faster, especially when writing
them in SSE, but this would cause a lot of Code duplication and due to
the nature of constexprs and the intelligence of the compiler they might
be using SSE/MMX either way
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As required by the specification:
`Set buffer.[[ArrayBufferDetachKey]] to "WebAssembly.Memory".`
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Particularly noticeable in ports like openssl, which like to map the
entire error message set from 0 through 128 on startup.
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This enables the WebServer to run protected by a username and password.
While it isn't possible to access such a protected server from inside
Serenity as of now (because neither the Browser nor pro(1) support
this), this may very well be the case in the future. :^)
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This patch adds two new static methods to HttpRequest.
get_http_basic_authentication_header generates a "Authorization" header
from a given URL, where as parse_http_basic_authentication_header parses
an "Authorization" header into username and password.
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This moves the configuration of the web server, which currently only
consists of the root path, into a new class, Configuration. Since the
configuration is global and not per client, it is accessed by a
singleton getter.
This change simplifies future extensions of the configurable parameters.
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This changes the Client::set_error_response() to not take a "message"
anymore. It now uses the canonical reason phrase which is derived from
the response code.
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This adds a reason_phrase() getter and a static reason_phrase_for_code()
to the HttpResponse class.
It also changes the class to use east const style.
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This adds trailing slashes to all links to directories (when listing the
directory contents). This avoids the redirect that would otherwise
happen when browsing to those directories.
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In the web server root directory, ".." has to be handled specially,
since everything above it does not exist from the point of view of the
user. The most sensible thing to do is to make ".." equal to ".". This
is also what ls(1) does for "/" and what "http://localhost/../"
evaluates to.
This also fixes a bug where stat() would fail on the directory above the
root directory, since it hasn't been unveiled for the process.
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Responding with some device files such as /dev/random never terminates,
so let's just refuse that.
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This is necessary to avoid trying to destruct the on_ready_to_read
function from inside the function. This fixes #7810.
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This also removes two unused headers.
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This will make it easier to write bytecode generation for function
expressions in just a moment.
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The addition of an is_generator parameter broke this, as is_strict was
being passed in, causing an assertion.
This is being addressed by changing it to an enum in #7981, but in the
meantime let's just fix these two cases.
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20.5.1.1 Error ( message )
When the Error function is called with argument message, the
following steps are taken:
[...]
3b. Let msgDesc be the PropertyDescriptor {
[[Value]]: msg,
[[Writable]]: true,
[[Enumerable]]: false,
[[Configurable]]: true
}.
3c. Perform ! DefinePropertyOrThrow(O, "message", msgDesc).
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The FunctionPrototype is correct for ErrorConstructor itself:
20.5.2 Properties of the Error Constructor
The Error constructor:
- has a [[Prototype]] internal slot whose value is
%Function.prototype%.
However, not for all the other "NativeError" constructors:
20.5.6.2 Properties of the NativeError Constructors
Each NativeError constructor:
- has a [[Prototype]] internal slot whose value is %Error%.
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Expressions like foo[1 + 2] now work, and you can assign to them
as well! :^)
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...instead of crashing :^)
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This is required by the specification and will be used for the
$262.detachArrayBuffer method in test262.
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`1. If Type(O) is not Object, throw a TypeError exception.`
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Non-RangeError exceptions can be thrown by user implementations of
valueOf (which are called by to_index), and the specification disallows
changing the type of the thrown error.
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The exception order was incorrect in the old implementation, and it
did not use the Symbol.species constructor as required by the spec.
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The second argument (the default constructor) and the return value have
to be constructors (as a result functions), so we can require that
explicitly by using appropriate types.
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The `c_iflag` and `c_oflag` fields were swapped in the source code which
caused the bit values to be interpreted as the wrong flag. It was a
stupid mistake on my part.
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We can just get the global object from the constructor function.
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This patch adds a CallType to the Bytecode::Op::Call instruction,
which can be either Call or Construct. We then generate Construct
calls for the NewExpression AST node.
When executed, these get fed into VM::construct().
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This adds a new PushLexicalEnvironment instruction that creates a new
LexicalEnvironment and pushes it on the VM's scope stack.
There is no corresponding PopLexicalEnvironment instruction yet,
so this will behave incorrectly with let/const scopes for example.
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There's no reason not to, since we're using mmap() for these anyway
and that gives us memory in 4 KiB increments. :^)
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This replaces Bytecode::Op::EnterScope with a new NewFunction op that
instantiates a ScriptFunction from a given FunctionNode (AST).
This is then used to instantiate the local functions directly from
bytecode when entering a ScopeNode. :^)
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These will be partly handled by the relevant ScopeNode due to
hoisting, same basic idea as function declarations.
VariableDeclaration needs to do some work, but let's stub it out
first and start empty.
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EnterUnwindContext pushes an unwind context (exception handler and/or
finalizer) onto a stack.
LeaveUnwindContext pops the unwind context from that stack.
Upon return to the interpreter loop we check whether the VM has an
exception pending. If no unwind context is available we return from the
loop. If an exception handler is available we clear the VM's exception,
put the exception value into the accumulator register, clear the unwind
context's handler and jump to the handler. If no handler is available
but a finalizer is available we save the exception value + metadata (for
later use by ContinuePendingUnwind), clear the VM's exception, pop the
unwind context and jump to the finalizer.
ContinuePendingUnwind checks whether a saved exception is available. If
no saved exception is available it jumps to the resume label. Otherwise
it stores the exception into the VM.
The Jump after LeaveUnwindContext could be integrated into the
LeaveUnwindContext instruction. I've kept them separate for now to make
the bytecode more readable.
> try { 1; throw "x" } catch (e) { 2 } finally { 3 }; 4
1:
[ 0] EnterScope
[ 10] EnterUnwindContext handler:@4 finalizer:@3
[ 38] EnterScope
[ 48] LoadImmediate 1
[ 60] NewString 1 ("x")
[ 70] Throw
<for non-terminated blocks: insert LeaveUnwindContext + Jump @3 here>
2:
[ 0] LoadImmediate 4
3:
[ 0] EnterScope
[ 10] LoadImmediate 3
[ 28] ContinuePendingUnwind resume:@2
4:
[ 0] SetVariable 0 (e)
[ 10] EnterScope
[ 20] LoadImmediate 2
[ 38] LeaveUnwindContext
[ 3c] Jump @3
String Table:
0: e
1: x
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