Declare ext/tokenizer constants in stubs (#9148)

Implement readonly properties

Add support for readonly properties, for which only a single
initializing assignment from the declaring scope is allowed.

RFC: https://wiki.php.net

Implement readonly properties

Add support for readonly properties, for which only a single
initializing assignment from the declaring scope is allowed.

RFC: https://wiki.php.net/rfc/readonly_properties_v2

Closes GH-7089.

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Pure Intersection types (#6799)

Implement pure intersection types RFC

RFC: https://wiki.php.net/rfc/pure-intersection-types

Co-authored-by: Nikita Popov <nikic@php.net>

Pure Intersection types (#6799)

Implement pure intersection types RFC

RFC: https://wiki.php.net/rfc/pure-intersection-types

Co-authored-by: Nikita Popov <nikic@php.net>
Co-authored-by: Ilija Tovilo <ilutov@php.net>

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Generate tokenizer_data.c from zend_language_parser.y

The order of the tokens in zend_language_parser.h depends on the
used bison version. To avoid spurious changes to tokenizer_data.c

Generate tokenizer_data.c from zend_language_parser.y

The order of the tokens in zend_language_parser.h depends on the
used bison version. To avoid spurious changes to tokenizer_data.c
generate tit from the zend_language_parser.y file instead.

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Update http->https in license (#6945)

1. Update: http://www.php.net/license/3_01.txt to https, as there is anyway server header "Location:" to https.
2. Update few license 3.0 to 3.01 as

Update http->https in license (#6945)

1. Update: http://www.php.net/license/3_01.txt to https, as there is anyway server header "Location:" to https.
2. Update few license 3.0 to 3.01 as 3.0 states "php 5.1.1, 4.1.1, and earlier".
3. In some license comments is "at through the world-wide-web" while most is without "at", so deleted.
4. fixed indentation in some files before |

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Implement enums

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

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

Closes GH-6489.

Add tokenizer_data_gen to build process

Closes GH-6723.

Implement Shorter Attribute Syntax

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

Closes GH-5796.

Co-authored-by: Martin Schröder <m.schroeder2007@gmail.com>

Implement nullsafe ?-> operator

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

Closes GH-5619.

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

Treat namespaced names as single token

Namespace names are now lexed as single tokens of type
T_NAME_QUALIFIED, T_NAME_FULLY_QUALIFIED or T_NAME_RELATIVE.

RFC: https://wiki.php.

Treat namespaced names as single token

Namespace names are now lexed as single tokens of type
T_NAME_QUALIFIED, T_NAME_FULLY_QUALIFIED or T_NAME_RELATIVE.

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

Closes GH-5827.

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Implement match expression

RFC: https://wiki.php.net/rfc/match_expression_v2

Closes GH-5371.

Make throw statement an expression

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

This has an open issue with temporaries that are live at the time
of the throw being leaked. La

Make throw statement an expression

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

This has an open issue with temporaries that are live at the time
of the throw being leaked. Landing this now for easier testing and
will revert if we cannot resolve the issue.

Closes GH-5279.

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Add PhpToken class

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

Relative to the RFC, this also adds a __toString() method,
as discussed on list.

Closes GH-5176.

Remove deprecated (real) cast

Closes GH-5220

Remove mention of PHP major version in Copyright headers

Closes GH-4732.

Don't specify precedence for T_INC/T_DEC

As these do not operate on expressions, precedence is meaningless
for them.

Emit T_BAD_CHARACTER for unexpected characters

Avoid having holes in the token stream which are annoying and
inefficient to reconstruct on the consumer side.

Implement arrow functions

Per RFC: https://wiki.php.net/rfc/arrow_functions_v2

Co-authored-by: Levi Morrison <levim@php.net>
Co-authored-by: Bob Weinand <bobwei9@hotmail.com>

Fix tokenizer_data_gen.sh for non-posix bison

And run it to update tokenizer_data.c after recent changes in
zend_language_parser.y that reordered some tokens

Remove yearly range from copyright notice

Implement ??= operator

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

$a ??= $b is $a ?? ($a = $b), with the difference that $a is only
evaluated once, to the degree

Implement ??= operator

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

$a ??= $b is $a ?? ($a = $b), with the difference that $a is only
evaluated once, to the degree that this is possible. In particular
in $a[foo()] ?? $b function foo() is only ever called once.
However, the variable access themselves will be reevaluated.

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Sync leading and final newlines in source code files

This patch adds missing newlines, trims multiple redundant final
newlines into a single one, and trims redundant leading newlines.

Sync leading and final newlines in source code files

This patch adds missing newlines, trims multiple redundant final
newlines into a single one, and trims redundant leading newlines.

According to POSIX, a line is a sequence of zero or more non-' <newline>'
characters plus a terminating '<newline>' character. [1] Files should
normally have at least one final newline character.

C89 [2] and later standards [3] mention a final newline:
"A source file that is not empty shall end in a new-line character,
which shall not be immediately preceded by a backslash character."

Although it is not mandatory for all files to have a final newline
fixed, a more consistent and homogeneous approach brings less of commit
differences issues and a better development experience in certain text
editors and IDEs.

[1] http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap03.html#tag_03_206
[2] https://port70.net/~nsz/c/c89/c89-draft.html#2.1.1.2
[3] https://port70.net/~nsz/c/c99/n1256.html#5.1.1.2

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Run tokenizer_data_gen.sh to reorganize tokens

This will help us in future PRs, reducing the numbers of changed lines

Remove unused Git attributes ident

The $Id$ keywords were used in Subversion where they can be substituted
with filename, last revision number change, last changed date, and last
use

Remove unused Git attributes ident

The $Id$ keywords were used in Subversion where they can be substituted
with filename, last revision number change, last changed date, and last
user who changed it.

In Git this functionality is different and can be done with Git attribute
ident. These need to be defined manually for each file in the
.gitattributes file and are afterwards replaced with 40-character
hexadecimal blob object name which is based only on the particular file
contents.

This patch simplifies handling of $Id$ keywords by removing them since
they are not used anymore.

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Revert "Handle scanner error in first place (don't hide them from ext/tokenizer) and cheaper whitespace handlig."

This reverts commit 0d6da03f5c3e49b92cf6817ba8a7f8d6f60ee1aa.