68 lines
1.8 KiB
C++
68 lines
1.8 KiB
C++
#ifndef __PLASP__PDDL__EXPRESSIONS__WHEN_H
|
|
#define __PLASP__PDDL__EXPRESSIONS__WHEN_H
|
|
|
|
#include <plasp/pddl/expressions/Binary.h>
|
|
|
|
namespace plasp
|
|
{
|
|
namespace pddl
|
|
{
|
|
namespace expressions
|
|
{
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// When
|
|
//
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
class When: public Binary<When>
|
|
{
|
|
public:
|
|
static const Expression::Type ExpressionType = Expression::Type::When;
|
|
|
|
static const std::string Identifier;
|
|
|
|
template<typename ConditionExpressionParser, typename ImplicationExpressionParser>
|
|
static WhenPointer parse(Context &context, ExpressionContext &expressionContext,
|
|
ConditionExpressionParser parseConditionExpression,
|
|
ImplicationExpressionParser parseImplicationExpression);
|
|
};
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
template<typename ConditionExpressionParser, typename ImplicationExpressionParser>
|
|
WhenPointer When::parse(Context &context, ExpressionContext &expressionContext,
|
|
ConditionExpressionParser parseConditionExpression,
|
|
ImplicationExpressionParser parseImplicationExpression)
|
|
{
|
|
auto &tokenizer = context.tokenizer;
|
|
|
|
const auto position = tokenizer.position();
|
|
|
|
if (!tokenizer.testAndSkip<std::string>("(")
|
|
|| !tokenizer.testIdentifierAndSkip(Identifier))
|
|
{
|
|
tokenizer.seek(position);
|
|
return nullptr;
|
|
}
|
|
|
|
auto expression = WhenPointer(new When);
|
|
|
|
// Parse arguments of the expression
|
|
expression->setArgument(0, parseConditionExpression(context, expressionContext));
|
|
expression->setArgument(1, parseImplicationExpression(context, expressionContext));
|
|
|
|
tokenizer.expect<std::string>(")");
|
|
|
|
return expression;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
#endif
|