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plasp/src/plasp/pddl/expressions/Constant.cpp

253 lines
6.6 KiB
C++

#include <plasp/pddl/expressions/Constant.h>
#include <algorithm>
#include <boost/assert.hpp>
#include <plasp/input/ParserException.h>
#include <plasp/pddl/Context.h>
#include <plasp/pddl/Domain.h>
#include <plasp/pddl/ExpressionContext.h>
#include <plasp/pddl/Problem.h>
#include <plasp/pddl/expressions/PrimitiveType.h>
namespace plasp
{
namespace pddl
{
namespace expressions
{
////////////////////////////////////////////////////////////////////////////////////////////////////
//
// Constant
//
////////////////////////////////////////////////////////////////////////////////////////////////////
Constant::Constant()
: m_isDirty{false},
m_type{nullptr}
{
}
////////////////////////////////////////////////////////////////////////////////////////////////////
ConstantPointer Constant::parseDeclaration(Context &context)
{
context.parser.skipWhiteSpace();
auto constant = ConstantPointer(new Constant);
constant->m_name = context.parser.parseIdentifier();
BOOST_ASSERT(constant->m_name != "-");
// Flag constant for potentially upcoming type declaration
constant->setDirty();
return constant;
}
////////////////////////////////////////////////////////////////////////////////////////////////////
void Constant::parseTypedDeclaration(Context &context, Domain &domain)
{
parseTypedDeclaration(context, domain, domain.constants());
}
////////////////////////////////////////////////////////////////////////////////////////////////////
void Constant::parseTypedDeclaration(Context &context, Problem &problem)
{
parseTypedDeclaration(context, problem.domain(), problem.objects());
}
////////////////////////////////////////////////////////////////////////////////////////////////////
void Constant::parseTypedDeclaration(Context &context, Domain &domain, Constants &constants)
{
// Parse and store constant
constants.emplace_back(parseDeclaration(context));
context.parser.skipWhiteSpace();
// Check for typing information
if (!context.parser.testAndSkip<char>('-'))
return;
// If existing, parse and store parent type
auto type = PrimitiveType::parseAndFind(context, domain);
// Assign parent type to all types that were previously flagged
std::for_each(constants.begin(), constants.end(),
[&](auto &constant)
{
if (!constant->isDirty())
return;
constant->setType(type);
constant->setDirty(false);
});
}
////////////////////////////////////////////////////////////////////////////////////////////////////
void Constant::parseTypedDeclarations(Context &context, Domain &domain)
{
auto &parser = context.parser;
while (parser.currentCharacter() != ')')
{
parseTypedDeclaration(context, domain);
parser.skipWhiteSpace();
}
if (domain.constants().empty())
return;
// Check correct use of typing requirement
const auto typingUsed = (domain.constants().back()->type() != nullptr);
// If types are given, check that typing is a requirement
if (typingUsed)
domain.checkRequirement(Requirement::Type::Typing);
// If no types are given, check that typing is not a requirement
else if (domain.hasRequirement(Requirement::Type::Typing))
throw input::ParserException(parser.location(), "constant has undeclared type");
}
////////////////////////////////////////////////////////////////////////////////////////////////////
void Constant::parseTypedDeclarations(Context &context, Problem &problem)
{
auto &parser = context.parser;
while (context.parser.currentCharacter() != ')')
{
parseTypedDeclaration(context, problem);
parser.skipWhiteSpace();
}
if (problem.objects().empty())
return;
// Check correct use of typing requirement
const auto typingUsed = (problem.objects().back()->type() != nullptr);
// If types are given, check that typing is a requirement
if (typingUsed)
problem.checkRequirement(Requirement::Type::Typing);
// If no types are given, check that typing is not a requirement
else if (problem.hasRequirement(Requirement::Type::Typing))
throw input::ParserException(parser.location(), "constant has undeclared type");
}
////////////////////////////////////////////////////////////////////////////////////////////////////
ConstantPointer Constant::parseAndFind(Context &context, const Domain &domain)
{
auto &parser = context.parser;
parser.skipWhiteSpace();
const auto constantName = parser.parseIdentifier();
auto constant = parseAndFind(constantName, domain.constants());
if (constant != nullptr)
return constant;
throw input::ParserException(parser.location(), "constant “" + constantName + "” used but never declared");
}
////////////////////////////////////////////////////////////////////////////////////////////////////
ConstantPointer Constant::parseAndFind(Context &context, const Problem &problem)
{
auto &parser = context.parser;
parser.skipWhiteSpace();
const auto constantName = parser.parseIdentifier();
auto constant = parseAndFind(constantName, problem.domain().constants());
if (constant)
return constant;
constant = parseAndFind(constantName, problem.objects());
if (constant)
return constant;
throw input::ParserException(parser.location(), "constant “" + constantName + "” used but never declared");
}
////////////////////////////////////////////////////////////////////////////////////////////////////
ConstantPointer Constant::parseAndFind(const std::string &constantName, const Constants &constants)
{
const auto match = std::find_if(constants.cbegin(), constants.cend(),
[&](const auto &constant)
{
return constant->name() == constantName;
});
const auto constantExists = (match != constants.cend());
if (!constantExists)
return nullptr;
return match->get();
}
////////////////////////////////////////////////////////////////////////////////////////////////////
void Constant::setDirty(bool isDirty)
{
m_isDirty = isDirty;
}
////////////////////////////////////////////////////////////////////////////////////////////////////
bool Constant::isDirty() const
{
return m_isDirty;
}
////////////////////////////////////////////////////////////////////////////////////////////////////
const std::string &Constant::name() const
{
return m_name;
}
////////////////////////////////////////////////////////////////////////////////////////////////////
void Constant::setType(PrimitiveTypePointer type)
{
m_type = type;
}
////////////////////////////////////////////////////////////////////////////////////////////////////
PrimitiveTypePointer Constant::type() const
{
return m_type;
}
////////////////////////////////////////////////////////////////////////////////////////////////////
void Constant::print(std::ostream &ostream) const
{
ostream << "(" << m_name << ")";
}
////////////////////////////////////////////////////////////////////////////////////////////////////
}
}
}