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| author | Marcus Boerger <helly@php.net> | 2007-03-04 16:25:57 +0000 |
|---|---|---|
| committer | Marcus Boerger <helly@php.net> | 2007-03-04 16:25:57 +0000 |
| commit | b24f8404114e4188bf1d9b8370e6ad84a85f4301 (patch) | |
| tree | efd5d6ba980b5bfe18233be6b21f4906f79c4ca3 /Zend/zend_language_parser.y | |
| parent | 213172a41b19680e1e4aeabd526717f474600bc5 (diff) | |
| download | php-git-b24f8404114e4188bf1d9b8370e6ad84a85f4301.tar.gz | |
- Implement '?:'
[DOC] "expr1 ?: expr1" is a shortcut for: "expr1 ? expr1 : expr2" as
exists in gcc and discussed some time back. Note that this is not
an implementation ifsetor($var, default). While ifsetor would not
generate any message for non existing variables or array indices
the ternary shortcut does. Also the ternary shortcut does a boolean
evaluation rather then checking for isset(). That way ther ternary
shortcut can work on any expression while ifsetor can only work on
variables. Also to be silent one has do do: "@$expr1 ?: $expr2".
Diffstat (limited to 'Zend/zend_language_parser.y')
| -rw-r--r-- | Zend/zend_language_parser.y | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/Zend/zend_language_parser.y b/Zend/zend_language_parser.y index 549bc17706..dec7a02272 100644 --- a/Zend/zend_language_parser.y +++ b/Zend/zend_language_parser.y @@ -611,6 +611,9 @@ expr_without_variable: | expr '?' { zend_do_begin_qm_op(&$1, &$2 TSRMLS_CC); } expr ':' { zend_do_qm_true(&$4, &$2, &$5 TSRMLS_CC); } expr { zend_do_qm_false(&$$, &$7, &$2, &$5 TSRMLS_CC); } + | expr '?' { zend_do_begin_qm_op(&$1, &$2 TSRMLS_CC); } + ':' { zend_do_qm_true(&$1, &$2, &$4 TSRMLS_CC); } + expr { zend_do_qm_false(&$$, &$6, &$2, &$4 TSRMLS_CC); } | internal_functions_in_yacc { $$ = $1; } | T_INT_CAST expr { zend_do_cast(&$$, &$2, IS_LONG TSRMLS_CC); } | T_DOUBLE_CAST expr { zend_do_cast(&$$, &$2, IS_DOUBLE TSRMLS_CC); } |