[8.4] Add support for property hooks

Add hooks subnode to Stmt\Property and Param, which contains an
array of PropertyHook.

The property hook support is considered experimental

[8.4] Add support for property hooks

Add hooks subnode to Stmt\Property and Param, which contains an
array of PropertyHook.

The property hook support is considered experimental and subject
to change.

RFC: https://wiki.php.net/rfc/property-hooks

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Don't drop class statements before error (#952)

When encountering a null statement (indicating that an error occurred),
retain the preceding statements. These were accidentally dropped

Don't drop class statements before error (#952)

When encountering a null statement (indicating that an error occurred),
retain the preceding statements. These were accidentally dropped
previously.

(cherry picked from commit 54103d838734be0499172026525e38cbf6af2711)

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Remove Stmt\Throw

This was a backwards-compatibility shim for Expr\Throw.

Introduce Stmt\Block

Stmt\Block will be created for { $a; } style blocks, unless these
occur directly inside some structure that is usually combined
with a block.

For exampl

Introduce Stmt\Block

Stmt\Block will be created for { $a; } style blocks, unless these
occur directly inside some structure that is usually combined
with a block.

For example if ($a) { $b; } will continue to use the old
representation (plain array in in If_::$stmts), but a free-standing
{ $b; } will become a Stmt\Block.

Fixes #590.

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Represent names using string rather than array of parts

In most circumstances we are interested in the whole string, not
the parts split by namespace separator. As names are common, this

Represent names using string rather than array of parts

In most circumstances we are interested in the whole string, not
the parts split by namespace separator. As names are common, this
representation measurably improves memory usage and performance.

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Add support for typed constants

RFC: https://wiki.php.net/rfc/typed_class_constants

Rename Stmt\UseUse to UseItem

Rename Stmt\PropertyProperty to PropertyItem

Rename Stmt\DeclareDeclare to DeclareItem

Rename Scalar\LNumber to Scalar\Int_

Remove MODIFIER_ prefix from node dumps

These constants are now called Modifiers::PUBLIC rather than
Class_::MODIFIER_PUBLIC etc, so update the dumped name as well.

Rename Stmt\StaticVar to StaticVar

This is part of a statement, not a statement by itself.

Rename Expr\ArrayItem to ArrayItem

Array items are not expressions by themselves.

Remove PHP 5 parser

[PHP 8.2] Add readonly class support (#834)

RFC: https://wiki.php.net/rfc/readonly_classes

PHP implementation: php/php-src#7305

Add support for PHP 8.1

With the introduction of intersection types, PHP now lexes the
token '&' either as T_AMPERSAND_(NOT_)FOLLOWED_BY_VAR_OR_VARARG.
This completely breaks parsing

Add support for PHP 8.1

With the introduction of intersection types, PHP now lexes the
token '&' either as T_AMPERSAND_(NOT_)FOLLOWED_BY_VAR_OR_VARARG.
This completely breaks parsing of any code containing '&'.

Fix this by canonicalizing to the new token format (unconditionally,
independent of emulation) and adjusting the parser to use the two
new tokens.

This doesn't add actual support for intersection types yet.

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Fix #738 incorrect start line for traits

Empty productions are supposed to be assigned the start attributes
of the lookahead token. Currently, this happens by assigning above
the cur

Fix #738 incorrect start line for traits

Empty productions are supposed to be assigned the start attributes
of the lookahead token. Currently, this happens by assigning above
the current stack position when the token it read.

This fails in a situation where we first reduce an empty production
higher up in the stack, and then again reduce an empty production
lower in the stack, without consuming the lookahead token in the
meantime.

Fix this by moving the assignment into the reduction phase. We
also need to do this for error productions, which are effectively
empty.

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Recover from missing semicolon after property or class const

Fixes #712.

[PHP 8.0] Add attributes support (#661)

Adds support for PHP 8 attributes, represented using `AttrGroup` nodes
containing `Attribute` nodes. The `attrGroup` subnode is added to all
n

[PHP 8.0] Add attributes support (#661)

Adds support for PHP 8 attributes, represented using `AttrGroup` nodes
containing `Attribute` nodes. The `attrGroup` subnode is added to all
nodes that can have attributes.

This is still missing FPPP support.

Co-authored-by: Nikita Popov <nikita.ppv@gmail.com>

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Add named argument support

Not adding any explicit FPPP support, as I don't think add/remove
of names can be handled any better than full reformatting.

[PHP 8.0] Support trailing comma in closure use list

RFC: https://wiki.php.net/rfc/trailing_comma_in_closure_use_list

Add constructor promotion support

[PHP 8.0] Add trailing comma in parameter list

Revert "Recover from error inside alternative array deref syntax"

This reverts commit 9d44edf85dc5882e45fed37a6c541bf20e7c8495.

Recover from error inside alternative array deref syntax

This is to improve error recovery for cases like #545.