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Decompile: implement foreach, improve blank line

git-svn-id: svn://svn.lighttpd.net/xcache/trunk@789 c26eb9a1-5813-0410-bd6c-c2e55f420ca7
3.0
Xuefer 11 years ago
parent
commit
eeb72b449e
  1. 78
      Decompiler.class.php
  2. 2
      decompilesample.php

78
Decompiler.class.php

@ -523,11 +523,16 @@ class Decompiler
// }}}
function outputPhp(&$EX, $opline, $last, $indent) // {{{
{
$needBlankline = isset($EX['lastBlock']);
$origindent = $indent;
$curticks = 0;
for ($i = $opline; $i <= $last; $i ++) {
$op = $EX['opcodes'][$i];
if (isset($op['gofrom'])) {
if ($needBlankline) {
$needBlankline = false;
echo PHP_EOL;
}
echo 'label' . $i, ":\n";
}
if (isset($op['php'])) {
@ -546,9 +551,17 @@ class Decompiler
else if (!$oldticks) {
$indent .= INDENT;
}
if ($needBlankline) {
$needBlankline = false;
echo PHP_EOL;
}
echo $origindent, "declare (ticks=$curticks) {\n";
}
}
if ($needBlankline) {
$needBlankline = false;
echo PHP_EOL;
}
echo $indent, str($op['php'], $indent), ";\n";
}
}
@ -652,9 +665,6 @@ class Decompiler
// }}}
function decompileBasicBlock(&$EX, $first, $last, $indent) // {{{
{
if (isset($EX['lastBlock'])) {
echo PHP_EOL;
}
$this->dasmBasicBlock($EX, $first, $last);
// $this->dumpRange($EX, $first, $last);
$this->outputPhp($EX, $first, $last, $indent);
@ -669,7 +679,7 @@ class Decompiler
unset($jmpins[$line]);
$jmpins = array_keys($jmpins);
}
$opcodes[$line]['opcode'] = XC_NOP;
// $opcodes[$line]['opcode'] = XC_NOP;
unset($opcodes[$line]['jmpouts']);
}
// }}}
@ -693,13 +703,15 @@ class Decompiler
$firstOp = &$opcodes[$first];
$lastOp = &$opcodes[$last];
if ($lastOp['opcode'] == XC_JMPNZ
if ($lastOp['opcode'] == XC_JMPNZ && !empty($lastOp['jmpouts'])
&& $lastOp['jmpouts'][0] == $first) {
$this->removeJmpInfo($EX, $last);
$this->beginComplexBlock($EX);
echo $indent, 'do {', PHP_EOL;
$this->recognizeAndDecompileClosedBlocks($EX, $first, $last, $indent . INDENT);
echo $indent, '} while (', str($this->getOpVal($lastOp['op1'], $EX)), ');', PHP_EOL;
$this->endComplexBlock($EX);
return;
}
@ -716,18 +728,47 @@ class Decompiler
if (isset($firstJmpOp)
&& $firstJmpOp['opcode'] == XC_JMPZ
&& $lastOp['opcode'] == XC_JMP
&& $firstJmpOp['jmpouts'][0] > $last
&& $lastOp['opcode'] == XC_JMP && !empty($lastOp['jmpouts'])
&& $lastOp['jmpouts'][0] == $first) {
$this->removeJmpInfo($EX, $firstJmp);
$this->removeJmpInfo($EX, $last);
$this->beginComplexBlock($EX);
ob_start();
$this->recognizeAndDecompileClosedBlocks($EX, $first, $last, $indent . INDENT);
$code = ob_get_clean();
$body = ob_get_clean();
echo $indent, 'while (', str($this->getOpVal($firstJmpOp['op1'], $EX)), ') {', PHP_EOL;
echo $code;
echo $body;
echo $indent, '}', PHP_EOL;
$this->endComplexBlock($EX);
return;
}
if (isset($firstJmpOp)
&& $firstJmpOp['opcode'] == XC_FE_FETCH
&& $firstJmpOp['jmpouts'][0] > $last
&& $lastOp['opcode'] == XC_JMP && !empty($lastOp['jmpouts'])
&& $lastOp['jmpouts'][0] == $firstJmp) {
$this->removeJmpInfo($EX, $firstJmp);
$this->removeJmpInfo($EX, $last);
$this->beginComplexBlock($EX);
ob_start();
$this->recognizeAndDecompileClosedBlocks($EX, $first, $last, $indent . INDENT);
$body = ob_get_clean();
$as = foldToCode($firstJmpOp['fe_as'], $EX);
if (isset($firstJmpOp['fe_key'])) {
$as = str($firstJmpOp['fe_key'], $EX) . ' => ' . str($as);
}
echo $indent, 'foreach (', str($firstJmpOp['fe_src'], $EX), " as $as) {", PHP_EOL;
echo $body;
echo $indent, '}', PHP_EOL;
$this->endComplexBlock($EX);
return;
}
@ -910,25 +951,6 @@ class Decompiler
else {
$next = null;
}
if ($op['opcode'] == XC_FE_FETCH) {
$opline = $next;
$next = $op['op2']['opline_num'];
$end = $next - 1;
ob_start();
$this->outputCode($EX, $opline, $end /* - 1 skip last jmp */, $indent . INDENT);
$body = ob_get_clean();
$as = foldToCode($op['fe_as'], $EX);
if (isset($op['fe_key'])) {
$as = str($op['fe_key'], $EX) . ' => ' . str($as);
}
echo "{$indent}foreach (" . str($op['fe_src'], $EX) . " as $as) {\n";
echo $body;
echo "{$indent}}";
// $this->outputCode($EX, $next, $last, $indent);
// return;
}
/*
if ($op['opcode'] == XC_JMPZ) {
$target = $op2['opline_num'];

2
decompilesample.php

@ -294,7 +294,7 @@ for ($i = 1; $i < 10; ++$i) {
}
foreach ($array as $key => $value) {
foreach ($array as $key => $value) {
foreach ($value as $key => $value) {
echo $key . ' = ' . $value . "\n";
break 2;
continue;

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