/
MathOptimizer.php
112 lines (99 loc) · 3.18 KB
/
MathOptimizer.php
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<?php
/*
* This file is part of the Zephir.
*
* (c) Zephir Team <team@zephir-lang.com>
*
* For the full copyright and license information, please view
* the LICENSE file that was distributed with this source code.
*/
namespace Zephir\Optimizers;
use Zephir\Call;
use Zephir\CompilationContext;
use Zephir\CompiledExpression;
use Zephir\Exception\CompilerException;
/**
* Class OptimizerAbstract.
*/
abstract class MathOptimizer extends OptimizerAbstract
{
/**
* Gets function name.
*
* @return string
*/
abstract public function getFunctionName();
/**
* @param array $expression
* @param Call $call
* @param CompilationContext $context
*
* @throws CompilerException
*
* @return bool|CompiledExpression|mixed
*/
public function optimize(array $expression, Call $call, CompilationContext $context)
{
if (!isset($expression['parameters'])) {
return false;
}
if (\count($expression['parameters']) > 1) {
return false;
}
/*
* Resolve parameters as vars
*/
$call->getResolvedParams($expression['parameters'], $context, $expression);
/**
* Get CompiledExpression(s) for resolved var(s).
*/
$resolvedParams = $call->getResolvedParamsAsExpr($expression['parameters'], $context, $expression);
$compiledExpression = $resolvedParams[0];
switch ($compiledExpression->getType()) {
case 'int':
case 'float':
case 'long':
case 'ulong':
case 'double':
$context->headersManager->add('math');
return $this->passNativeFCall($compiledExpression, $expression);
break;
case 'variable':
$variable = $context->symbolTable->getVariable($compiledExpression->getCode());
switch ($variable->getType()) {
case 'int':
case 'float':
case 'long':
case 'ulong':
case 'double':
$context->headersManager->add('math');
return $this->passNativeFCall($compiledExpression, $expression);
break;
case 'variable':
$context->headersManager->add('kernel/math');
return new CompiledExpression(
'double',
'zephir_'.$this->getFunctionName().'('.$context->backend->getVariableCode($variable).')',
$expression
);
break;
}
break;
}
return false;
}
/**
* @param CompiledExpression $compiledExpression
* @param array $expression
*
* @return CompiledExpression
*/
protected function passNativeFCall($compiledExpression, $expression)
{
return new CompiledExpression(
'double',
$this->getFunctionName().'('.$compiledExpression->getCode().')',
$expression
);
}
}