private function dumpOp(Op $op)
{
$result = $op->getType();
foreach ($op->getVariableNames() as $varName) {
$result .= "\n {$varName}: ";
$result .= $this->indent($this->dumpOperand($op->{$varName}));
}
foreach ($op->getSubBlocks() as $subBlock) {
$result .= "\n {$subBlock}: " . $this->indent($this->dumpBlockRef($op->{$subBlock}));
}
return $result;
}
public function enterOp(Op $op, Block $block)
{
foreach ($op->getVariableNames() as $name) {
$var = $op->{$name};
if (!is_array($var)) {
$var = [$var];
}
foreach ($var as $v) {
if (is_null($v)) {
continue;
}
$this->variables->attach($v);
}
}
}
public static function removeUsage(Operand $var, Op $op)
{
foreach ($op->getVariableNames() as $varName) {
$vars = $op->{$varName};
$newVars = [];
if (!is_array($vars)) {
$vars = [$vars];
}
foreach ($vars as $key => $value) {
if ($value !== $var) {
$newVars[$key] = $value;
}
}
if (!is_array($op->{$varName})) {
$op->{$varName} = array_shift($newVars);
} else {
$op->{$varName} = array_keys($newVars);
}
}
}
protected function renderOp(Op $op)
{
$result = $op->getType();
if ($op instanceof Op\CallableOp) {
$func = $op->getFunc();
$result .= "<" . $func->name . ">";
}
if ($op instanceof Op\Expr\Assertion) {
$result .= "<" . $this->renderAssertion($op->assertion) . ">";
}
foreach ($op->getVariableNames() as $varName) {
$vars = $op->{$varName};
if (is_array($vars)) {
foreach ($vars as $key => $var) {
if (!$var) {
continue;
}
$result .= "\n {$varName}[{$key}]: ";
$result .= $this->indent($this->renderOperand($var));
}
} elseif ($vars) {
$result .= "\n {$varName}: ";
$result .= $this->indent($this->renderOperand($vars));
}
}
$childBlocks = [];
foreach ($op->getSubBlocks() as $blockName) {
$sub = $op->{$blockName};
if (is_array($sub)) {
foreach ($sub as $key => $subBlock) {
if (!$subBlock) {
continue;
}
$this->enqueueBlock($subBlock);
$childBlocks[] = ["block" => $subBlock, "name" => $blockName . "[" . $key . "]"];
}
} elseif ($sub) {
$this->enqueueBlock($sub);
$childBlocks[] = ["block" => $sub, "name" => $blockName];
}
}
return ["op" => $op, "label" => $result, "childBlocks" => $childBlocks];
}
protected function renderOp(Op $op)
{
$result = $op->getType();
if ($op instanceof Op\CallableOp) {
$result .= '<' . $op->name->value . '>';
foreach ($op->getParams() as $key => $param) {
$result .= $this->indent("\nParam[{$key}]: " . $this->renderOperand($param->result));
}
}
if ($op instanceof Op\Expr\Assertion) {
$result .= "<" . $this->renderAssertion($op->assertion) . ">";
}
foreach ($op->getVariableNames() as $varName) {
$vars = $op->{$varName};
if (!is_array($vars)) {
$vars = [$vars];
}
foreach ($vars as $var) {
if (!$var) {
continue;
}
$result .= "\n {$varName}: ";
$result .= $this->indent($this->renderOperand($var));
}
}
$childBlocks = [];
foreach ($op->getSubBlocks() as $blockName) {
$sub = $op->{$blockName};
if (is_null($sub)) {
continue;
}
if (!is_array($sub)) {
$sub = [$sub];
}
foreach ($sub as $subBlock) {
if (!$subBlock) {
continue;
}
$this->enqueueBlock($subBlock);
$childBlocks[] = ["block" => $subBlock, "name" => $blockName];
}
}
return ["op" => $op, "label" => $result, "childBlocks" => $childBlocks];
}
private function replaceOpVariable(Operand $from, Operand $to, Op $op)
{
foreach ($op->getVariableNames() as $name) {
if (is_null($op->{$name})) {
continue;
}
if (is_array($op->{$name})) {
// SIGH, PHP won't let me do this directly (parses as $op->($name[$key]))
$result = $op->{$name};
$new = [];
foreach ($result as $key => $value) {
if ($value === $from) {
$new[$key] = $to;
if ($op->isWriteVariable($name)) {
$to->addWriteOp($op);
} else {
$to->addUsage($op);
}
} else {
$new[$key] = $value;
}
}
$op->{$name} = $new;
} elseif ($op->{$name} === $from) {
$op->{$name} = $to;
if ($op->isWriteVariable($name)) {
$to->addWriteOp($op);
} else {
$to->addUsage($op);
}
}
}
}