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Commit Graph

6 Commits

Author SHA1 Message Date
Nikita Popov
338bc1f8e7 Fix "print" pretty-printing
Precedence was previously ignored.
2015-04-26 11:56:04 +02:00
Nikita Popov
ab80054e97 Add support for "yield from" 2015-04-26 11:56:02 +02:00
Nikita Popov
01f4be6b4d Add support for null coalesce operator (??) [PHP 7]
Added as Expr\BinaryOp\Coalesce.
2015-03-12 22:45:56 +01:00
Nikita Popov
6930feac43 Add some tests for pretty printing expressions 2015-01-18 19:57:09 +01:00
nikic
cda6f575f0 Add support for pow operator (PHP 5.6) 2014-03-26 19:18:16 +01:00
nikic
ac6f221c50 Better prededence and associativity handling in pretty printer
Previously the pretty printer added unnecessary and odd-looking parentheses
when several operators with the same precedence were chained:

    'a' . 'b' . 'c' . 'd' . 'e'
    // was printed as
    'a' . ('b' . ('c' . ('d' . 'e')))

Another issue reported as part of #39 was that assignments inside closures
were wrapped in parentheses:

    function() {
        $a = $b;
    }
    // was printed as
    function() {
        ($a = $b);
    }

This was caused by the automatic precedence handling, which just regarded
the closure as an ordinal nested expression.

With the new system the $predenceMap of PrettyPrinterAbstract contains both
precedence and associativity and there is a new method pPrec() which prints
a node taking precedence and associativity into account.

For simpler usage there are additional function pInfixOp(), pPrefixOp() and
pPostfixOp().

Prints not going through pPrec() do not have any precedence handling (fixing
the closure issue).
2012-10-31 17:34:06 +01:00