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Copy pathSequenceParser.php
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54 lines (45 loc) · 1.01 KB
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Copy pathSequenceParser.php
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54 lines (45 loc) · 1.01 KB
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<?php
namespace petitparser;
/**
* A parser that parses a sequence of parsers.
*/
class SequenceParser extends ListParser
{
/**
* @param Context $context
*
* @return Result
*/
public function parseOn(Context $context)
{
$current = $context;
$elements = array();
for ($i=0; $i < count($this->_parsers); $i++) {
$result = $this->_parsers[$i]->parseOn($current);
if ($result->isFailure()) {
return $result;
}
$elements[$i] = $result->getValue();
$current = $result;
}
return $current->success($elements);
}
/**
* @param Parser $other
*
* @return Parser
*/
public function seq(Parser $other)
{
$parsers = $this->_parsers;
$parsers[] = $other;
return new SequenceParser($parsers);
}
/**
* @return Parser
*/
public function copy()
{
return new SequenceParser($this->_parsers);
}
}