Add basic support for tab indentation

Add a new "indent" option for the pretty printer, which can be
use to control the indentation width, or switch it to use tabs.

Tab width is

Add basic support for tab indentation

Add a new "indent" option for the pretty printer, which can be
use to control the indentation width, or switch it to use tabs.

Tab width is currenlty hardcoded to 4, but also shouldn't matter
much.

Possibly the formatting-preserving printer should auto-detect
the indentation in the future.

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Fix indentation detection after opening tag

Fixes #982.

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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Remove superfluous phpdoc tags

These just specify a type that is already specified as a real PHP
type.

Don't align phpdoc tags

I did this to start with, but then alignment kept being broken
during refactorings, and at some point I switched to not aligning,
and now we have a big mess.

Don't align phpdoc tags

I did this to start with, but then alignment kept being broken
during refactorings, and at some point I switched to not aligning,
and now we have a big mess.

Add a php-cs-fixer rule to consistently not align phpdoc tags.

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Add property types

Types omitted in two places where we violate them currently:
Namespace_::$stmts can be null during parsing, and Enum_::$scalarType
can be a complex type for invali

Add property types

Types omitted in two places where we violate them currently:
Namespace_::$stmts can be null during parsing, and Enum_::$scalarType
can be a complex type for invalid programs.

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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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Specify more types

Add missing return types

Add missing parameter types

Add php-cs-fixer config and reformat

The formatting in this project has become something of a mess,
because it changed over time. Add a CS fixer config and reformat
to the desired st

Add php-cs-fixer config and reformat

The formatting in this project has become something of a mess,
because it changed over time. Add a CS fixer config and reformat
to the desired style, which is PSR-12, but with sane brace placement.

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optimization haveTokenImmediatelyAfter performance

Use PHP 8.0 token representation

Migrate everything to use PhpToken-compatible token representation,
rather than the legacy array/string representation.

Add some missing type annotations

Allow both '{' and T_CURLY_OPEN as curly bracket (#732)

FPPP: Fix code block detection during removal

Instead of checking whether there is a {/} before/after the removed
note, check whether {/} occurs in the between-node range. Dropping
t

FPPP: Fix code block detection during removal

Instead of checking whether there is a {/} before/after the removed
note, check whether {/} occurs in the between-node range. Dropping
that is what we're really concerned about here.

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FPPP: Support removing nodes from start of list

Move TokenStream into Internal namespace