bsimmers
15f4fa0050
One of the optimization passes in hphp can remove unreachable (Yield|Await)Expressions. This leaves the FunctionScope's yield label count in an inconsistent state, so relabel/count the yields on each pass. Reviewed By: @markw65 Differential Revision: D982747
50 linhas
1.7 KiB
C++
50 linhas
1.7 KiB
C++
/*
|
|
+----------------------------------------------------------------------+
|
|
| HipHop for PHP |
|
|
+----------------------------------------------------------------------+
|
|
| Copyright (c) 2010-2013 Facebook, Inc. (http://www.facebook.com) |
|
|
+----------------------------------------------------------------------+
|
|
| This source file is subject to version 3.01 of the PHP license, |
|
|
| that is bundled with this package in the file LICENSE, and is |
|
|
| available through the world-wide-web at the following url: |
|
|
| http://www.php.net/license/3_01.txt |
|
|
| If you did not receive a copy of the PHP license and are unable to |
|
|
| obtain it through the world-wide-web, please send a note to |
|
|
| license@php.net so we can mail you a copy immediately. |
|
|
+----------------------------------------------------------------------+
|
|
*/
|
|
|
|
#include "hphp/compiler/expression/generation_label.h"
|
|
|
|
#include "hphp/compiler/analysis/function_scope.h"
|
|
#include "hphp/compiler/expression/expression.h"
|
|
|
|
namespace HPHP {
|
|
|
|
GenerationLabel::GenerationLabel(Expression* e)
|
|
: m_id(-1)
|
|
, m_generation(-1)
|
|
, m_owner(e)
|
|
{}
|
|
|
|
int GenerationLabel::id() const {
|
|
assert(m_id >= 1);
|
|
assert(m_generation ==
|
|
m_owner->getFunctionScope()->getYieldLabelGeneration());
|
|
return m_id;
|
|
}
|
|
|
|
void GenerationLabel::setNew() {
|
|
auto func = m_owner->getFunctionScope();
|
|
auto newGen = func->getYieldLabelGeneration();
|
|
assert(m_generation < newGen);
|
|
m_generation = newGen;
|
|
m_id = func->allocYieldLabel();
|
|
}
|
|
|
|
void GenerationLabel::setExpression(Expression* e) {
|
|
m_owner = e;
|
|
}
|
|
|
|
}
|