|
public getExpressionCompiler ( ) : |
||
| return | ||
/**
* {expr} + {expr}
*
* @param \PhpParser\Node\Expr\BinaryOp\Plus $expr
* @param Context $context
* @return CompiledExpression
*/
protected function compile($expr, Context $context)
{
$left = $context->getExpressionCompiler()->compile($expr->left);
$right = $context->getExpressionCompiler()->compile($expr->right);
switch ($left->getType()) {
case CompiledExpression::INTEGER:
switch ($right->getType()) {
case CompiledExpression::INTEGER:
/**
* php -r "var_dump(1 + 1);" int(2)
*/
return new CompiledExpression(CompiledExpression::INTEGER, $left->getValue() + $right->getValue());
case CompiledExpression::DOUBLE:
/**
* php -r "var_dump(1 + 1.0);" double(2)
*/
return new CompiledExpression(CompiledExpression::DOUBLE, $left->getValue() + $right->getValue());
}
break;
case CompiledExpression::DOUBLE:
switch ($right->getType()) {
case CompiledExpression::INTEGER:
case CompiledExpression::DOUBLE:
/**
* php -r "var_dump(1.0 + 1);" double(2)
* php -r "var_dump(1.0 + 1.0);" double(2)
*/
return new CompiledExpression(CompiledExpression::DOUBLE, $left->getValue() + $right->getValue());
}
}
return new CompiledExpression();
}
/**
* yield {value}, yield {key} => {value}
*
* @param \PhpParser\Node\Expr\Yield_ $expr
* @param Context $context
* @return CompiledExpression
*/
protected function compile($expr, Context $context)
{
$key = $context->getExpressionCompiler()->compile($expr->key);
$value = $context->getExpressionCompiler()->compile($expr->value);
// @TODO implement yield
return new CompiledExpression();
}
/**
* It's used in conditions
* {left-expr} !== {right-expr}
*
* @param \PhpParser\Node\Expr\BinaryOp\NotIdentical $expr
* @param Context $context
* @return CompiledExpression
*/
protected function compile($expr, Context $context)
{
$left = $context->getExpressionCompiler()->compile($expr->left);
$right = $context->getExpressionCompiler()->compile($expr->right);
if ($left->isTypeKnown() && $right->isTypeKnown()) {
return CompiledExpression::fromZvalValue($left->getValue() !== $right->getValue());
}
return new CompiledExpression();
}
/**
* ({expr}) ? {expr} : {expr}
*
* @param \PhpParser\Node\Expr\Ternary $expr
* @param Context $context
* @return CompiledExpression
*/
protected function compile($expr, Context $context)
{
$condition = $context->getExpressionCompiler()->compile($expr->cond);
$left = $context->getExpressionCompiler()->compile($expr->if);
$right = $context->getExpressionCompiler()->compile($expr->else);
if ($condition->getValue() == true) {
return CompiledExpression::fromZvalValue($left->getValue());
} else {
return CompiledExpression::fromZvalValue($right->getValue());
}
}
/**
* @param \PhpParser\Node\Stmt\Foreach_ $stmt
* @param Context $context
* @return null|boolean
*/
public function compile($stmt, Context $context)
{
$context->getExpressionCompiler()->compile($stmt->expr);
if ($stmt->keyVar) {
$context->getExpressionCompiler()->declareVariable($stmt->keyVar, null, CompiledExpression::MIXED);
}
if ($stmt->valueVar) {
$context->getExpressionCompiler()->declareVariable($stmt->valueVar, null, CompiledExpression::MIXED);
}
foreach ($stmt->stmts as $statement) {
\PHPSA\nodeVisitorFactory($statement, $context);
}
}
/**
* @param \PhpParser\Node\Stmt\For_ $stmt
* @param Context $context
* @return CompiledExpression
*/
public function compile($stmt, Context $context)
{
foreach ($stmt->init as $init) {
$context->getExpressionCompiler()->compile($init);
}
foreach ($stmt->cond as $cond) {
$context->getExpressionCompiler()->compile($cond);
}
foreach ($stmt->loop as $loop) {
$context->getExpressionCompiler()->compile($loop);
}
foreach ($stmt->stmts as $statement) {
\PHPSA\nodeVisitorFactory($statement, $context);
}
}
/**
* It's used in conditions
* {left-expr} <=> {right-expr}
*
* @param \PhpParser\Node\Expr\BinaryOp\Spaceship $expr
* @param Context $context
* @return CompiledExpression
*/
protected function compile($expr, Context $context)
{
$left = $context->getExpressionCompiler()->compile($expr->left);
$right = $context->getExpressionCompiler()->compile($expr->right);
if ($left->isTypeKnown() && $right->isTypeKnown()) {
if ($left->getValue() == $right->getValue()) {
return new CompiledExpression(CompiledExpression::INTEGER, 0);
} elseif ($left->getValue() < $right->getValue()) {
return new CompiledExpression(CompiledExpression::INTEGER, -1);
} elseif ($left->getValue() > $right->getValue()) {
return new CompiledExpression(CompiledExpression::INTEGER, 1);
}
}
return new CompiledExpression();
}
/**
* @param \PhpParser\Node\Stmt\Const_ $stmt
* @param Context $context
* @return CompiledExpression
*/
public function compile($stmt, Context $context)
{
$compiler = $context->getExpressionCompiler();
foreach ($stmt->consts as $const) {
$compiler->compile($const->value);
}
}
/**
* $a &= $b;
*
* @param \PhpParser\Node\Expr\AssignRef $expr
* @param Context $context
* @return CompiledExpression
*/
protected function compile($expr, Context $context)
{
$compiler = $context->getExpressionCompiler();
if ($expr->var instanceof VariableNode) {
$name = $expr->var->name;
$compiledExpression = $compiler->compile($expr->expr);
$symbol = $context->getSymbol($name);
if ($symbol) {
$symbol->modify($compiledExpression->getType(), $compiledExpression->getValue());
} else {
$symbol = new \PHPSA\Variable($name, $compiledExpression->getValue(), $compiledExpression->getType(), $context->getCurrentBranch());
$context->addVariable($symbol);
}
if ($expr->expr instanceof VariableNode) {
$rightVarName = $expr->expr->name;
$rightSymbol = $context->getSymbol($rightVarName);
if ($rightSymbol) {
$rightSymbol->incUse();
$symbol->setReferencedTo($rightSymbol);
} else {
$context->debug('Cannot fetch variable by name: ' . $rightVarName);
}
}
$symbol->incSets();
return $compiledExpression;
}
$context->debug('Unknown how to pass symbol by ref');
return new CompiledExpression();
}
/**
* @param \PhpParser\Node\Stmt\Static_ $stmt
* @param Context $context
* @return CompiledExpression
*/
public function compile($stmt, Context $context)
{
$compiler = $context->getExpressionCompiler();
foreach ($stmt->vars as $var) {
$compiler->compile($var->default);
}
}
/**
* classname->property
*
* @param \PhpParser\Node\Expr\PropertyFetch $expr
* @param Context $context
* @return CompiledExpression
*/
protected function compile($expr, Context $context)
{
$compiler = $context->getExpressionCompiler();
$propertNameCE = $compiler->compile($expr->name);
$scopeExpression = $compiler->compile($expr->var);
if ($scopeExpression->isObject()) {
$scopeExpressionValue = $scopeExpression->getValue();
if ($scopeExpressionValue instanceof ClassDefinition) {
$propertyName = $propertNameCE->isString() ? $propertNameCE->getValue() : false;
if ($propertyName) {
if ($scopeExpressionValue->hasProperty($propertyName, true)) {
$property = $scopeExpressionValue->getProperty($propertyName, true);
return $compiler->compile($property);
} else {
$context->notice('language_error', sprintf('Property %s does not exist in %s scope', $propertyName, $scopeExpressionValue->getName()), $expr);
}
}
}
return new CompiledExpression();
} elseif ($scopeExpression->canBeObject()) {
return new CompiledExpression();
}
$context->notice('language_error', "It's not possible to fetch a property on a non-object", $expr, Check::CHECK_BETA);
return new CompiledExpression();
}
/**
* @param \PhpParser\Node\Stmt\Do_ $stmt
* @param Context $context
* @return CompiledExpression
*/
public function compile($stmt, Context $context)
{
$context->getExpressionCompiler()->compile($stmt->cond);
foreach ($stmt->stmts as $statement) {
\PHPSA\nodeVisitorFactory($statement, $context);
}
}
/**
* [] array()
*
* @param \PhpParser\Node\Expr\Array_ $expr
* @param Context $context
* @return CompiledExpression
*/
protected function compile($expr, Context $context)
{
$compiler = $context->getExpressionCompiler();
if ($expr->items === []) {
return new CompiledExpression(CompiledExpression::ARR, []);
}
$resultArray = [];
foreach ($expr->items as $item) {
$compiledValueResult = $compiler->compile($item->value);
if ($item->key) {
$compiledKeyResult = $compiler->compile($item->key);
switch ($compiledKeyResult->getType()) {
case CompiledExpression::INTEGER:
case CompiledExpression::DOUBLE:
case CompiledExpression::BOOLEAN:
case CompiledExpression::NULL:
case CompiledExpression::STRING:
$resultArray[$compiledKeyResult->getValue()] = $compiledValueResult->getValue();
}
} else {
$resultArray[] = $compiledValueResult->getValue();
}
}
return new CompiledExpression(CompiledExpression::ARR, $resultArray);
}
/**
* @param Expr $expr
* @param Context $context
* @return bool
*/
public function pass(Expr $expr, Context $context)
{
$castType = CompiledExpression::UNKNOWN;
switch (get_class($expr)) {
case Expr\Cast\Array_::class:
$castType = CompiledExpression::ARR;
break;
case Expr\Cast\Bool_::class:
$castType = CompiledExpression::BOOLEAN;
break;
case Expr\Cast\Int_::class:
$castType = CompiledExpression::INTEGER;
break;
case Expr\Cast\Double::class:
$castType = CompiledExpression::DOUBLE;
break;
case Expr\Cast\Object_::class:
$castType = CompiledExpression::OBJECT;
break;
case Expr\Cast\String_::class:
$castType = CompiledExpression::STRING;
break;
}
$compiledExpression = $context->getExpressionCompiler()->compile($expr->expr);
$exprType = $compiledExpression->getType();
$typeName = $compiledExpression->getTypeName();
if ($castType === $exprType) {
$context->notice('stupid.cast', sprintf("You are trying to cast '%s' to '%s'", $typeName, $typeName), $expr);
return true;
} elseif (get_class($expr) == Expr\Cast\Unset_::class && $exprType === CompiledExpression::NULL) {
$context->notice('stupid.cast', "You are trying to cast 'null' to 'unset' (null)", $expr);
return true;
}
return false;
}
/**
* @param \PhpParser\Node\Stmt\Echo_ $stmt
* @param Context $context
* @return CompiledExpression
*/
public function compile($stmt, Context $context)
{
$compiler = $context->getExpressionCompiler();
foreach ($stmt->exprs as $expr) {
$compiler->compile($expr);
}
}
/**
* include {expr}, require {expr}
*
* @param \PhpParser\Node\Expr\Include_ $expr
* @param Context $context
* @return CompiledExpression
*/
protected function compile($expr, Context $context)
{
$compiled = $context->getExpressionCompiler()->compile($expr->expr);
if ($compiled->isString()) {
return CompiledExpression::fromZvalValue(1);
}
return CompiledExpression::fromZvalValue(false);
}
/**
* @param \PhpParser\Node\Expr\FuncCall $expr
* @return CompiledExpression[]
*/
protected function parseArgs($expr, Context $context)
{
$arguments = [];
foreach ($expr->args as $argument) {
$arguments[] = $context->getExpressionCompiler()->compile($argument->value);
}
return $arguments;
}
/**
* {expr} | {expr}
*
* @param \PhpParser\Node\Expr\BinaryOp\BitwiseOr $expr
* @param Context $context
* @return CompiledExpression
*/
protected function compile($expr, Context $context)
{
$left = $context->getExpressionCompiler()->compile($expr->left);
$right = $context->getExpressionCompiler()->compile($expr->right);
switch ($left->getType()) {
case CompiledExpression::INTEGER:
case CompiledExpression::DOUBLE:
case CompiledExpression::BOOLEAN:
switch ($right->getType()) {
case CompiledExpression::INTEGER:
case CompiledExpression::DOUBLE:
case CompiledExpression::BOOLEAN:
return CompiledExpression::fromZvalValue($left->getValue() | $right->getValue());
}
}
return new CompiledExpression();
}
/**
* @param $stmt
* @return Expression|Statement
*/
function nodeVisitorFactory($stmt, Context $context)
{
if ($stmt instanceof Node\Stmt) {
$visitor = new Statement($stmt, $context);
return $visitor;
}
return $context->getExpressionCompiler()->compile($stmt);
}
/**
* (int) {$expr}
*
* @param \PhpParser\Node\Expr\Cast\Int_ $expr
* @param Context $context
* @return CompiledExpression
*/
protected function compile($expr, Context $context)
{
$compiledExpression = $context->getExpressionCompiler()->compile($expr->expr);
if ($compiledExpression->isTypeKnown()) {
return new CompiledExpression(CompiledExpression::INTEGER, (int) $compiledExpression->getValue());
}
return new CompiledExpression();
}
/**
* {left-expr} **= {right-expr}
*
* @param \PhpParser\Node\Expr\AssignOp\Pow $expr
* @param Context $context
* @return CompiledExpression
*/
protected function compile($expr, Context $context)
{
$left = $context->getExpressionCompiler()->compile($expr->var);
$expExpression = $context->getExpressionCompiler()->compile($expr->expr);
switch ($left->getType()) {
case CompiledExpression::INTEGER:
case CompiledExpression::DOUBLE:
case CompiledExpression::NUMBER:
case CompiledExpression::BOOLEAN:
switch ($expExpression->getType()) {
case CompiledExpression::INTEGER:
case CompiledExpression::DOUBLE:
case CompiledExpression::NUMBER:
case CompiledExpression::BOOLEAN:
return CompiledExpression::fromZvalValue(pow($left->getValue(), $expExpression->getValue()));
}
}
return new CompiledExpression();
}
/**
* {expr} ?? {expr}
*
* @param \PhpParser\Node\Expr\BinaryOp\Coalesce $expr
* @param Context $context
* @return CompiledExpression
*/
protected function compile($expr, Context $context)
{
if ($expr->left instanceof Variable) {
$varName = $expr->left->name;
if ($varName instanceof Name) {
$varName = $varName->parts[0];
}
$variable = $context->getSymbol($varName);
if ($variable) {
$variable->incUse();
if ($variable->getValue() !== null) {
$leftCompiled = $context->getExpressionCompiler()->compile($expr->left);
return CompiledExpression::fromZvalValue($leftCompiled->getValue());
}
}
}
$rightCompiled = $context->getExpressionCompiler()->compile($expr->right);
return CompiledExpression::fromZvalValue($rightCompiled->getValue());
}
/**
* @param \PhpParser\Node\Arg[] $arguments
* @param Context $context
* @return CompiledExpression[]
*/
protected function parseArgs(array $arguments, Context $context)
{
$compiled = [];
if ($arguments) {
foreach ($arguments as $argument) {
$compiled[] = $context->getExpressionCompiler()->compile($argument->value);
}
}
return $compiled;
}
/**
* @param \PhpParser\Node\Stmt\Break_ $stmt
* @param Context $context
* @return CompiledExpression
*/
public function compile($stmt, Context $context)
{
$compiler = $context->getExpressionCompiler();
if ($stmt->num !== null) {
$compiled = $compiler->compile($stmt->num);
if (!$stmt->num instanceof LNumber || $compiled->getValue() == 0) {
$context->notice('language_error', 'Break only supports positive integers.', $stmt);
}
}
}
/**
* @param \PhpParser\Node\Stmt\Declare_ $stmt
* @param Context $context
* @return CompiledExpression
*/
public function compile($stmt, Context $context)
{
$compiler = $context->getExpressionCompiler();
foreach ($stmt->declares as $declare) {
$compiler->compile($declare->value);
}
foreach ($stmt->stmts as $stmt) {
\PHPSA\nodeVisitorFactory($stmt, $context);
}
}
/**
* @param $stmt
* @param Context $context
* @return bool
*/
public function pass($stmt, Context $context)
{
if ($stmt->default instanceof Node\Expr) {
$compiled = $context->getExpressionCompiler()->compile($stmt->default);
if ($compiled->getType() == CompiledExpression::NULL) {
$context->notice('property_definition_default_value', 'null is default and is not needed.', $stmt);
return true;
}
}
return false;
}
/**
* ~{expr}
*
* @param \PhpParser\Node\Expr\BitwiseNot $expr
* @param Context $context
* @return CompiledExpression
*/
protected function compile($expr, Context $context)
{
$compiledExpression = $context->getExpressionCompiler()->compile($expr->expr);
switch ($compiledExpression->getType()) {
case CompiledExpression::INTEGER:
case CompiledExpression::DOUBLE:
case CompiledExpression::STRING:
return CompiledExpression::fromZvalValue(~$compiledExpression->getValue());
}
return new CompiledExpression();
}
/**
* @param Expr $expr
* @param Context $context
* @return bool
*/
public function pass(Expr $expr, Context $context)
{
$compiler = $context->getExpressionCompiler();
$left = $compiler->compile($expr->left);
$right = $compiler->compile($expr->right);
if ($left->isArray() || $right->isArray()) {
$context->notice('compare_with_array', "You are comparing an array. Did you want to use count()?", $expr);
return true;
}
return false;
}
/**
* @param FuncCall $funcCall
* @param Context $context
* @return string|bool
*/
public function resolveFunctionName(FuncCall $funcCall, Context $context)
{
$funcNameCompiledExpression = $context->getExpressionCompiler()->compile($funcCall->name);
if ($funcNameCompiledExpression->isString() && $funcNameCompiledExpression->isCorrectValue()) {
return $funcNameCompiledExpression->getValue();
} else {
if (!$funcNameCompiledExpression->isCallable()) {
$context->debug('Unexpected function name type ' . $funcNameCompiledExpression->getTypeName(), $funcCall->name);
}
}
return false;
}
/**
* {expr} % {expr}
*
* @param \PhpParser\Node\Expr\BinaryOp\Mod $expr
* @param Context $context
* @return CompiledExpression
*/
protected function compile($expr, Context $context)
{
$left = $context->getExpressionCompiler()->compile($expr->left);
$right = $context->getExpressionCompiler()->compile($expr->right);
if ($right->isEquals(0)) {
$context->notice('language_error', 'You are trying to divide by 0.', $expr);
return new CompiledExpression();
}
switch ($left->getType()) {
case CompiledExpression::INTEGER:
case CompiledExpression::DOUBLE:
case CompiledExpression::BOOLEAN:
switch ($right->getType()) {
case CompiledExpression::BOOLEAN:
case CompiledExpression::INTEGER:
case CompiledExpression::DOUBLE:
return CompiledExpression::fromZvalValue($left->getValue() % $right->getValue());
}
}
return new CompiledExpression();
}