Handle throw precedence

Now that this is an expression, we also need to handle precedence.

Run integration tests against PHP 8.2 test suite

Properly support prefix operator precedence printing

The pretty printer is supposed to produce a minimal-parentheses
printing for expressions. However, for prefix operators, we were

Properly support prefix operator precedence printing

The pretty printer is supposed to produce a minimal-parentheses
printing for expressions. However, for prefix operators, we were
failing to do so in ways that are practically meaningful, e.g.
$a = yield from $b produced redundant parentheses around the
yield from.

For prefix operators, the precedence of the direct parent operator
is not actually relevant: What matters is the precedence of any
infix operator whose LHS it appears on. For example, $a . include $b
does not require parentheses, but (include $a) . $b does.

To handle this, keep separate track of the parent operator
precedence, and a special LHS precedence which is used for unary
operator printing only. Because the LHS precedence may not come
from the direct parent, we have to pass it down the call stack.
And if we do that, we may as well do the same for the parent
precedence.

This also fixes an integration test failure with php-src, because
arrow function precedence was previously not respected (and would
be ugly to respect without this change).

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Support fixup for dynamic class const name

This is new in PHP 8.3.

Properly handle static deref LHS

The rules for static and array/object deref are slightly different:
The former does not allow constants.

Add .idea and .php-cs-fixer.cache to .gitignore

Doc string end label may have leading whitespace

When detecting whether the string contains the end label, allow
leading whitespace in front of it. This is legal since the
introducti

Doc string end label may have leading whitespace

When detecting whether the string contains the end label, allow
leading whitespace in front of it. This is legal since the
introduction of flexible doc strings.

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Support new variables in fixup

Properly handle new/instanceof operand restrictions

Fixes #912.

Respect precedence during clone pretty printing

Clone is the prefix operator with the highest operator precedence,
but was not treated as an operator at all.

Remove __halt_compiler from semi reserved keyword list

Apparently PHP does not allow use of __halt_compiler as a
semi-reserved keyword.

Perform end label check on escaped string

Escaping might convert a label character into an escape sequence
if it is not valid UTF-8.

Handle interpolated variable after end label

Interpolated variables start with non-label characters, and as
such also count as end label terminators since PHP 7.3.

Update allowed characters after doc string label

With the introduction of flexible doc strings, the ending label
is no longer required to be followed by a semicolon or newline.
We ne

Update allowed characters after doc string label

With the introduction of flexible doc strings, the ending label
is no longer required to be followed by a semicolon or newline.
We need to prevent doc string printing if the label is followed
by any non-label character.

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Print INF as 1.0E+1000

This makes pretty printing round trip to another Float literal,
rather than a constant lookup. The 1e1000 form in particular is
chosen because that seems to be

Print INF as 1.0E+1000

This makes pretty printing round trip to another Float literal,
rather than a constant lookup. The 1e1000 form in particular is
chosen because that seems to be the typical form used in various
tests.

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Add tools directory to export-ignore

[PHP 8.3] Support dynamic class const fetch

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

Declare list types (#907)

Closes #905

Rewrote overly magic code to make it readable (#906)

New code inspired by https://github.com/nikic/PHP-Parser/blob/950bf8f1d1865cfd0d248e13a3455db0be1d870c/lib/PhpParser/Builder/Trait_.php#

Rewrote overly magic code to make it readable (#906)

New code inspired by https://github.com/nikic/PHP-Parser/blob/950bf8f1d1865cfd0d248e13a3455db0be1d870c/lib/PhpParser/Builder/Trait_.php#L43

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Fix attrGroups/attributes confusion in EnumCase builder

Found by staabm in #907.

Adjust tests to work on 32-bit

Fixes #662.

Fix parsing of large hex floats containing "e"

These ended up taking the code path for normal floats and being
cast to zero.

Add some unit tests for PhpVersion

Bail out on PHP tags in removed code

If dropping a node would drop PHP tags, bail out of formatting
preservation. This will lose formatting, but at least produce
legal code.

Bail out on PHP tags in removed code

If dropping a node would drop PHP tags, bail out of formatting
preservation. This will lose formatting, but at least produce
legal code.

Closes GH-884.

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Add more tests for formatting preservation with InlineHTML

It's all broken...