/**
* Creates a closure
*
* @param array $expression
* @param CompilationContext $compilationContext
* @return CompiledExpression
* @throws \Zephir\CompilerException
*/
public function compile(array $expression, CompilationContext $compilationContext)
{
$classDefinition = new ClassDefinition($compilationContext->config->get('namespace'), self::$id . '__closure');
$classDefinition->setIsFinal(true);
$compilerFile = new CompilerFileAnonymous($classDefinition, $compilationContext->config, $compilationContext->logger);
$compilationContext->compiler->addClassDefinition($compilerFile, $classDefinition);
/**
* Builds parameters using the only parameter available
*/
$parameters = new ClassMethodParameters(array(array('type' => 'parameter', 'name' => $expression['left']['value'], 'const' => 0, 'data-type' => 'variable', 'mandatory' => 0, 'reference' => 0, 'file' => $expression['left']['file'], 'line' => $expression['left']['line'], 'char' => $expression['left']['char'])));
$exprBuilder = BuilderFactory::getInstance();
$statementBlockBuilder = $exprBuilder->statements()->block(array($exprBuilder->statements()->returnX($exprBuilder->raw($expression['right']))));
$block = $statementBlockBuilder->build();
$classMethod = new ClassMethod($classDefinition, array('public', 'final'), '__invoke', $parameters, new StatementsBlock($block), null, null, $expression);
$classDefinition->addMethod($classMethod, $block);
$compilationContext->headersManager->add('kernel/object');
if ($this->expecting) {
if ($this->expectingVariable) {
$symbolVariable = $this->expectingVariable;
} else {
$symbolVariable = $compilationContext->symbolTable->getTempVariableForWrite('variable', $compilationContext, $expression);
}
} else {
$symbolVariable = $compilationContext->symbolTable->getTempVariableForWrite('variable', $compilationContext, $expression);
}
$symbolVariable->initVariant($compilationContext);
$compilationContext->backend->createClosure($symbolVariable, $classDefinition, $compilationContext);
self::$id++;
return new CompiledExpression('variable', $symbolVariable->getRealName(), $expression);
}
/**
* Transforms calls to method "toHex" to sprintf('%X') call
*
* @param object $caller
* @param CompilationContext $compilationContext
* @param Call $call
* @param array $expression
* @return bool|mixed|\Zephir\CompiledExpression
*/
public function toHex($caller, CompilationContext $compilationContext, Call $call, array $expression)
{
$exprBuilder = BuilderFactory::getInstance();
$functionCall = $exprBuilder->statements()->functionCall('sprintf', array($exprBuilder->literal(Types::STRING, '%X'), $caller))->setFile($expression['file'])->setLine($expression['line'])->setChar($expression['char']);
$expression = new Expression($functionCall->build());
return $expression->compile($compilationContext);
}
/**
* @param CompilationContext $compilationContext
*/
public function compile(CompilationContext $compilationContext)
{
$codePrinter = $compilationContext->codePrinter;
$compilationContext->insideTryCatch++;
$currentTryCatch = ++$compilationContext->currentTryCatch;
$codePrinter->outputBlankLine();
$codePrinter->output('/* try_start_' . $currentTryCatch . ': */');
$codePrinter->outputBlankLine();
if (isset($this->_statement['statements'])) {
$st = new StatementsBlock($this->_statement['statements']);
$st->compile($compilationContext);
}
$codePrinter->outputBlankLine();
$codePrinter->output('try_end_' . $currentTryCatch . ':');
/**
* If 'try' is the latest statement add a 'dummy' statement to avoid compilation errors
*/
$codePrinter->outputBlankLine();
$compilationContext->insideTryCatch--;
if (isset($this->_statement['catches'])) {
/**
* Check if there was an exception
*/
$codePrinter->output('if (EG(exception)) {');
$codePrinter->increaseLevel();
$exprBuilder = BuilderFactory::getInstance();
foreach ($this->_statement['catches'] as $catch) {
if (isset($catch['variable'])) {
$variable = $compilationContext->symbolTable->getVariableForWrite($catch['variable']['value'], $compilationContext, $catch['variable']);
if ($variable->getType() != 'variable') {
throw new CompilerException('Only dynamic variables can be used to catch exceptions', $catch['exception']);
}
} else {
$variable = $compilationContext->symbolTable->getTempVariableForWrite('variable', $compilationContext, $compilationContext);
}
$compilationContext->backend->copyOnWrite($variable, 'EG(exception)', $compilationContext);
/**
* @TODO, use a builder here
*/
$variable->setIsInitialized(true, $compilationContext, $catch);
$variable->setMustInitNull(true);
/**
* Check if any of the classes in the catch block match the thrown exception
*/
foreach ($catch['classes'] as $class) {
$ifCheck = $exprBuilder->statements()->ifX()->setCondition($exprBuilder->operators()->binary(BinaryOperator::OPERATOR_INSTANCEOF, $exprBuilder->variable($variable->getName()), $exprBuilder->variable($class['value'])))->setStatements($exprBuilder->statements()->block(array_merge(array($exprBuilder->statements()->rawC('zend_clear_exception(TSRMLS_C);')), isset($catch['statements']) ? $catch['statements'] : array())));
$ifStatement = new IfStatement($ifCheck->build());
$ifStatement->compile($compilationContext);
}
if ($variable->isTemporal()) {
$variable->setIdle(true);
}
}
$codePrinter->decreaseLevel();
$codePrinter->output('}');
} else {
$codePrinter->output('zend_clear_exception(TSRMLS_C);');
}
}
/**
* @param $expression
* @param CompilationContext $compilationContext
* @return bool|CompiledExpression
* @throws CompilerException
*/
public function compile($expression, CompilationContext $compilationContext)
{
if (!isset($expression['left'])) {
throw new CompilerException("Invalid 'left' operand for 'typeof' expression", $expression['left']);
}
$functionCall = BuilderFactory::getInstance()->statements()->functionCall('gettype', array($expression['left']));
$expression = new Expression($functionCall->build());
return $expression->compile($compilationContext);
}
/**
* @param array $expression
* @param CompilationContext $compilationContext
* @return CompiledExpression
* @throws CompilerException
*/
public function compile(array $expression, CompilationContext $compilationContext)
{
if (!isset($expression['left'])) {
throw new CompilerException("Invalid 'left' operand for 'irange' expression", $expression['left']);
}
if (!isset($expression['right'])) {
throw new CompilerException("Invalid 'right' operand for 'irange' expression", $expression['right']);
}
$exprBuilder = Expression\Builder\BuilderFactory::getInstance();
/**
* Implicit type coercing
*/
$castBuilder = $exprBuilder->operators()->cast(Types::ARRAY_, $exprBuilder->statements()->functionCall('range', array($expression['left'], $expression['right'])));
$expression = new Expression($castBuilder->build());
$expression->setReadOnly($this->_readOnly);
return $expression->compile($compilationContext);
}
/**
* Intercepts calls to built-in methods
*
* @param string $methodName
* @param object $caller
* @param CompilationContext $compilationContext
* @param Call $call
* @param array $expression
* @throws CompilerException
* @return bool|\Zephir\CompiledExpression
*/
public function invokeMethod($methodName, $caller, CompilationContext $compilationContext, Call $call, array $expression)
{
/**
* Checks first whether the method exist in the array type definition
*/
if (method_exists($this, $methodName)) {
return $this->{$methodName}($caller, $compilationContext, $call, $expression);
}
/**
* Check the method map
*/
if (isset($this->methodMap[$methodName])) {
$paramNumber = $this->getNumberParam($methodName);
if ($paramNumber == 0) {
if (isset($expression['parameters'])) {
$parameters = $expression['parameters'];
array_unshift($parameters, array('parameter' => $caller));
} else {
$parameters = array(array('parameter' => $caller));
}
} else {
if (isset($expression['parameters'])) {
$parameters = array();
foreach ($expression['parameters'] as $number => $parameter) {
if ($number == $paramNumber) {
$parameters[] = null;
}
$parameters[] = $parameter;
}
$parameters[$paramNumber] = array('parameter' => $caller);
} else {
$parameters = array(array('parameter' => $caller));
}
}
$functionCall = BuilderFactory::getInstance()->statements()->functionCall($this->methodMap[$methodName], $parameters)->setFile($expression['file'])->setLine($expression['line'])->setChar($expression['char']);
$expression = new Expression($functionCall->build());
return $expression->compile($compilationContext);
}
throw new CompilerException(sprintf('Method "%s" is not a built-in method of type "%s"', $methodName, $this->getTypeName()), $expression);
}
/**
* @param CompilationContext $compilationContext
* @throws CompilerException
*/
public function compile(CompilationContext $compilationContext)
{
$statement = $this->_statement;
if (!isset($statement['data-type'])) {
throw new CompilerException("Data type is required", $this->_statement);
}
$typeInference = $compilationContext->typeInference;
$symbolTable = $compilationContext->symbolTable;
foreach ($statement['variables'] as $variable) {
$varName = $variable['variable'];
if ($symbolTable->hasVariableInBranch($varName, $compilationContext->branchManager->getCurrentBranch())) {
throw new CompilerException("Variable '" . $varName . "' is already defined", $variable);
}
$currentType = $statement['data-type'];
/**
* Replace original data type by the pre-processed infered type
*/
if ($typeInference) {
if ($currentType == 'variable') {
$type = $typeInference->getInferedType($varName);
if (is_string($type)) {
$currentType = $type;
}
}
}
switch ($currentType) {
case 'variable':
case 'array-access':
case 'property-access':
case 'static-property-access':
case 'fcall':
case 'mcall':
case 'scall':
$currentType = 'variable';
break;
}
/**
* Variables are added to the symbol table
*/
if (isset($variable['expr'])) {
$symbolVariable = $symbolTable->addVariable($currentType, $varName, $compilationContext, $variable['expr']);
} else {
$symbolVariable = $symbolTable->addVariable($currentType, $varName, $compilationContext);
}
$varName = $symbolVariable->getName();
/**
* Set the node where the variable is declared
*/
$symbolVariable->setOriginal($variable);
$symbolVariable->setIsInitialized(true, $compilationContext);
//$symbolVariable->increaseMutates();
if ($currentType == 'variable') {
$symbolVariable->setMustInitNull(true);
$symbolVariable->setLocalOnly(false);
}
//$symbolVariable->increaseVariantIfNull();
if (isset($variable['expr'])) {
$builder = BuilderFactory::getInstance();
$letBuilder = $builder->statements()->let(array($builder->operators()->assignVariable($varName, $builder->raw($variable['expr']))));
$letStatement = new LetStatement($letBuilder->build());
$letStatement->compile($compilationContext);
} else {
$symbolVariable->enableDefaultAutoInitValue();
}
}
}
/**
* @return $this|ExpressionLetStatement
*/
protected function getLetStatement()
{
$exprBuilder = BuilderFactory::getInstance();
if ($this->isStatic()) {
$className = '\\' . $this->classDefinition->getCompleteName();
$expr = $exprBuilder->raw($this->original['default']);
return $exprBuilder->statements()->let(array($exprBuilder->operators()->assignStaticProperty($className, $this->name, $expr)->setFile($this->original['default']['file'])->setLine($this->original['default']['line'])->setChar($this->original['default']['char'])));
}
$lsb = $exprBuilder->statements()->let(array($exprBuilder->operators()->assignProperty('this', $this->name, $exprBuilder->raw($this->original['default']))->setFile($this->original['default']['file'])->setLine($this->original['default']['line'])->setChar($this->original['default']['char'])));
return $exprBuilder->statements()->ifX()->setCondition($exprBuilder->operators()->binary(BinaryOperator::OPERATOR_EQUALS, $exprBuilder->operators()->binary(BinaryOperator::OPERATOR_ACCESS_PROPERTY, $exprBuilder->variable('this'), $exprBuilder->literal(Types::STRING, $this->name)), $exprBuilder->literal(Types::NULL_)))->setStatements($exprBuilder->statements()->block(array($lsb)));
}
/**
* Transforms calls to method "join" to function calls to "join"
*
* @param object $caller
* @param CompilationContext $compilationContext
* @param Call $call
* @param array $expression
* @return bool|\Zephir\CompiledExpression
*/
public function join($caller, CompilationContext $compilationContext, Call $call, array $expression)
{
$functionCall = BuilderFactory::getInstance()->statements()->functionCall('join', $expression['parameters'])->addArgument($caller)->setFile($expression['file'])->setLine($expression['line'])->setChar($expression['char']);
$expression = new Expression($functionCall->build());
return $expression->compile($compilationContext);
}
/**
* Compiles a for statement that use a 'range' as expression
*
* @param array $exprRaw
* @param \CompilationContext $compilationContext
* @return boolean
*/
public function compileRange($exprRaw, CompilationContext $compilationContext)
{
if (!count($exprRaw['parameters'])) {
return false;
}
if (count($exprRaw['parameters']) > 3) {
return false;
}
$functionCall = new FunctionCall();
$parameters = $functionCall->getResolvedParamsAsExpr($exprRaw['parameters'], $compilationContext, $exprRaw);
if (count($parameters) != 2 && count($parameters) != 3) {
throw new CompilerException("Wrong number of parameters", $this->_statement['expr']);
}
if ($parameters[0]->getType() != 'variable') {
if (!$parameters[0]->isIntCompatibleType()) {
return false;
}
}
if ($parameters[1]->getType() != 'variable') {
if (!$parameters[1]->isIntCompatibleType()) {
return false;
}
}
$codePrinter = $compilationContext->codePrinter;
$exprBuilder = BuilderFactory::getInstance();
/**
* Initialize 'key' variable
*/
if (isset($this->_statement['key'])) {
/**
* This variable is used to check if the loop is in its first iteration
*/
$keyVariable = $compilationContext->symbolTable->getTempVariableForWrite('long', $compilationContext, $this->_statement);
$keyVariable->increaseUses();
}
/**
* This variable is used to check if the loop is in its first iteration
*/
$flagVariable = $compilationContext->symbolTable->getTempVariableForWrite('bool', $compilationContext, $this->_statement);
if ($parameters[0]->getType() != 'variable') {
$tempVariable = $compilationContext->symbolTable->addTemp($parameters[0]->getType(), $compilationContext);
} else {
$rangeVariable = $compilationContext->symbolTable->getVariableForRead($parameters[0]->getCode(), $compilationContext, $this->_statement['expr']);
$tempVariable = $compilationContext->symbolTable->addTemp($rangeVariable->getType(), $compilationContext);
}
/**
* Create a copy of the current value in the end of the range to avoid modify the range
* inside the cycle
*/
if ($parameters[1]->getType() != 'variable') {
$upperBoundVariable = $compilationContext->symbolTable->getTempVariable($parameters[1]->getType(), $compilationContext);
} else {
$rangeVariable = $compilationContext->symbolTable->getVariableForRead($parameters[1]->getCode(), $compilationContext, $this->_statement['expr']);
$upperBoundVariable = $compilationContext->symbolTable->getTempVariable($rangeVariable->getType(), $compilationContext);
}
/**
* Create an implicit 'let' operation to set the current value in the upper bound of the range
*/
$builderLet = $exprBuilder->statements()->let();
$builderLet->setAssignments(array($exprBuilder->operators()->assignVariable($upperBoundVariable->getName(), $exprBuilder->literal($parameters[1]->getType(), $parameters[1]->getCode())->setFile($this->_statement['file'])->setLine($this->_statement['line'])->setChar($this->_statement['char']))->setFile($this->_statement['file'])->setLine($this->_statement['line'])->setChar($this->_statement['char'])));
$statement = new LetStatement($builderLet->build());
$statement->compile($compilationContext);
if ($this->_statement['reverse']) {
/**
* Create an implicit 'let' operation for the initialize expression
*/
$builderLet->setAssignments(array($exprBuilder->operators()->assignVariable($tempVariable->getName(), $exprBuilder->variable($upperBoundVariable->getName())->setFile($this->_statement['file'])->setLine($this->_statement['line'])->setChar($this->_statement['char']))->setFile($this->_statement['file'])->setLine($this->_statement['line'])->setChar($this->_statement['char'])));
$statement = new LetStatement($builderLet->build());
} else {
/**
* Create an implicit 'let' operation for the initialize expression
*/
$builderLet->setAssignments(array($exprBuilder->operators()->assignVariable($tempVariable->getName(), $exprBuilder->literal($parameters[0]->getType(), $parameters[0]->getCode())->setFile($this->_statement['file'])->setLine($this->_statement['line'])->setChar($this->_statement['char']))->setFile($this->_statement['file'])->setLine($this->_statement['line'])->setChar($this->_statement['char'])));
$statement = new LetStatement($builderLet->build());
}
$statement->compile($compilationContext);
/**
* Initialize 'key' variable
*/
if (isset($this->_statement['key'])) {
$codePrinter->output($keyVariable->getName() . ' = 0;');
}
$codePrinter->output($flagVariable->getName() . ' = 0;');
if ($this->_statement['reverse']) {
$conditionExpr = array('type' => 'greater-equal', 'left' => array('type' => 'variable', 'value' => $tempVariable->getName()), 'right' => array('type' => $parameters[0]->getType(), 'value' => $parameters[0]->getCode()));
} else {
$conditionExpr = array('type' => 'less-equal', 'left' => array('type' => 'variable', 'value' => $tempVariable->getName()), 'right' => array('type' => 'variable', 'value' => $upperBoundVariable->getName()));
}
$expr = new EvalExpression();
$condition = $expr->optimize($conditionExpr, $compilationContext);
$codePrinter->output('if (' . $condition . ') {');
$codePrinter->increaseLevel();
/**
* Inside a cycle
*/
$compilationContext->insideCycle++;
$codePrinter->output('while (1) {');
$codePrinter->increaseLevel();
$codePrinter->output('if (' . $flagVariable->getName() . ') {');
$codePrinter->increaseLevel();
if (isset($this->_statement['key'])) {
$codePrinter->output($keyVariable->getName() . '++;');
}
if ($this->_statement['reverse']) {
if (!isset($parameters[2])) {
$statement = new LetStatement(array('type' => 'let', 'assignments' => array(array('assign-type' => 'decr', 'variable' => $tempVariable->getName(), 'file' => $this->_statement['file'], 'line' => $this->_statement['line'], 'char' => $this->_statement['char']))));
} else {
$statement = new LetStatement(array('type' => 'let', 'assignments' => array(array('assign-type' => 'variable', 'operator' => 'sub-assign', 'variable' => $tempVariable->getName(), 'expr' => array('type' => $parameters[2]->getType(), 'value' => $parameters[2]->getCode(), 'file' => $this->_statement['file'], 'line' => $this->_statement['line'], 'char' => $this->_statement['char']), 'file' => $this->_statement['file'], 'line' => $this->_statement['line'], 'char' => $this->_statement['char']))));
}
} else {
if (!isset($parameters[2])) {
$statement = new LetStatement(array('type' => 'let', 'assignments' => array(array('assign-type' => 'incr', 'variable' => $tempVariable->getName(), 'file' => $this->_statement['file'], 'line' => $this->_statement['line'], 'char' => $this->_statement['char']))));
} else {
$statement = new LetStatement(array('type' => 'let', 'assignments' => array(array('assign-type' => 'variable', 'operator' => 'add-assign', 'variable' => $tempVariable->getName(), 'expr' => array('type' => $parameters[2]->getType(), 'value' => $parameters[2]->getCode(), 'file' => $this->_statement['file'], 'line' => $this->_statement['line'], 'char' => $this->_statement['char']), 'file' => $this->_statement['file'], 'line' => $this->_statement['line'], 'char' => $this->_statement['char']))));
}
}
$statement->compile($compilationContext);
/**
* Multi-line conditions would need to be regenerated here
*/
$condition = $expr->optimize($conditionExpr, $compilationContext);
$codePrinter->output('if (!(' . $condition . ')) {');
$codePrinter->output("\t" . "break;");
$codePrinter->output('}');
$codePrinter->decreaseLevel();
$codePrinter->output('} else {');
$codePrinter->output("\t" . $flagVariable->getName() . ' = 1;');
$codePrinter->output('}');
/**
* Initialize 'key' variable
*/
if (isset($this->_statement['key'])) {
/**
* Check for anonymous variables
*/
if ($this->_statement['key'] != '_') {
$keyVariableName = $this->_statement['key'];
} else {
$keyVariableName = $keyVariable->getName();
}
/**
* Create an implicit 'let' operation, @TODO use a builder
*/
$statement = new LetStatement(array('type' => 'let', 'assignments' => array(array('assign-type' => 'variable', 'variable' => $keyVariableName, 'operator' => 'assign', 'expr' => array('type' => 'variable', 'value' => $keyVariable->getName(), 'file' => $this->_statement['file'], 'line' => $this->_statement['line'], 'char' => $this->_statement['char']), 'file' => $this->_statement['file'], 'line' => $this->_statement['line'], 'char' => $this->_statement['char']))));
$statement->compile($compilationContext);
}
/**
* Initialize 'value' variable
*/
if (isset($this->_statement['value'])) {
/**
* Check for anonymous variables
*/
if ($this->_statement['value'] != '_') {
$valueVariable = $this->_statement['value'];
} else {
$valueVariable = $tempVariable->getName();
}
/**
* Create an implicit 'let' operation, @TODO use a builder
*/
$statement = new LetStatement(array('type' => 'let', 'assignments' => array(array('assign-type' => 'variable', 'variable' => $valueVariable, 'operator' => 'assign', 'expr' => array('type' => 'variable', 'value' => $tempVariable->getName(), 'file' => $this->_statement['file'], 'line' => $this->_statement['line'], 'char' => $this->_statement['char']), 'file' => $this->_statement['file'], 'line' => $this->_statement['line'], 'char' => $this->_statement['char']))));
$statement->compile($compilationContext);
}
$codePrinter->decreaseLevel();
/**
* Compile statements in the 'for' block
*/
if (isset($this->_statement['statements'])) {
$st = new StatementsBlock($this->_statement['statements']);
$st->isLoop(true);
if (isset($this->_statement['key'])) {
$st->getMutateGatherer()->increaseMutations($this->_statement['key']);
}
$st->getMutateGatherer()->increaseMutations($this->_statement['value']);
$st->compile($compilationContext);
}
/**
* Restore the cycle counter
*/
$compilationContext->insideCycle--;
$codePrinter->output('}');
$codePrinter->decreaseLevel();
$codePrinter->output('}');
}