Fix coding style

Add makeReadonly() to param builder

(cherry picked from commit 11e2dcd96c830ee934fa7b0243f4d67d8a8821ab)

[5.x] Add constructor property promotion

By making flags on the Param builder configurable by providing make(Public|Protected|Private) methods we can promote parameters to properties from th

[5.x] Add constructor property promotion

By making flags on the Param builder configurable by providing make(Public|Protected|Private) methods we can promote parameters to properties from the constructor

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Treat del as label character depending on PHP version

In formatting-preserving pretty printing, treat DEL as a label
character based on the target PHP version (the default of 7.1
imp

Treat del as label character depending on PHP version

In formatting-preserving pretty printing, treat DEL as a label
character based on the target PHP version (the default of 7.1
implying it isn't one).

This avoids failure to round-trip an unchanged input.

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Use PHP 7.1 as default pretty printer target

Don't ltrim when preserving formatting

We shouldn't ltrim when printing a whole file, that way we will
not just fail to preserve formatting, but actually change semantics
by dropping

Don't ltrim when preserving formatting

We shouldn't ltrim when printing a whole file, that way we will
not just fail to preserve formatting, but actually change semantics
by dropping meaningful whitespace.

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Remove garbage collection section from docs

The GC issue has been fixed in PHP 7.3 and is no longer relevant.

Don't generate braces for "else if"

Mentioned in #915.

Release PHP-Parser 5.0.0 alpha 2

Update upgrading documentation

Update changelog

Add PrettyPrinter interface

Closes #423.

Revert "Rename PrettyPrinterAbstract to PrettyPrinter"

This reverts commit 2217f14d6e039f1c0572329e6fcc99f6c17178a3.

Set allowed exceptions in fuzzer

Don't always omit parentheses for argument-less yield

We may need parentheses around an argument-less yield to distinguish
(yield) - $a from yield -$a and similar.

Treat argumen

Don't always omit parentheses for argument-less yield

We may need parentheses around an argument-less yield to distinguish
(yield) - $a from yield -$a and similar.

Treat argument-less yield like a prefix operator. This will print
parentheses a bit more often than is really required, because the
arity ambiguity only exists for certain operators. This seems like
a reasonably good approximation through, as it only affects
argument-less yield on the LHS of infix operators.

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Handle group use special case in fuzzer

Same as for normal use.

Respect namespace style for enum scalar type printing

Doesn't matter in any practical sense because such types are always
invalid, but makes sure pretty printing round-trips.

Handle overflowing \u escape sequence

Don't skip tests with evaluate segment when generating corpus

This code was adopted from test updating, but in this context
we're fine with just evaluating these.

Produce error if <?= used as identifier

Due to a peculiarity of how <?= is handled, it can get treated as
an echo identifier. Make sure it isn't, to match PHP behavior.

Rename PrettyPrinterAbstract to PrettyPrinter

Strip trailing doc string newline before parsing escape sequences

If the doc string ends on an escaped \r, it should not get eaten
as the "last newline".

Support parsing from stdin in php-parse

Following the usual convention, read from stdin if the file name
is "-".

Detect another special case in fuzzer

Handle isolated \r in doc string

Doc strings have a trailing \n and these will get interpreted as
\r\n and removed from the string contents.

For nowdoc, fall back to single quot

Handle isolated \r in doc string

Doc strings have a trailing \n and these will get interpreted as
\r\n and removed from the string contents.

For nowdoc, fall back to single quote if there's a trailing \r.
For heredoc, escape all isolated \r -- unlike \n and \r\n this is
really a special character, because this is no longer relevant as
an actual newline character.

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