php 语法分析格式的问题--关于bison action的问题
查看php的语法文件文件(zend_language_parser.y),发现有如下的写法:
<br />
| T_FOR<br />
'('<br />
for_expr<br />
';' { zend_do_free(&$3 TSRMLS_CC); $4.u.op.opline_num = get_next_op_number(CG(active_op_array)); }<br />
for_expr<br />
';' { zend_do_extended_info(TSRMLS_C); zend_do_for_cond(&$6, &$7 TSRMLS_CC); }<br />
for_expr<br />
')' { zend_do_free(&$9 TSRMLS_CC); zend_do_for_before_statement(&$4, &$7 TSRMLS_CC); }<br />
<br />
<br />
';' { zend_do_free(&$3 TSRMLS_CC); $4.u.op.opline_num = get_next_op_number(CG(active_op_array)); }<br />
