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Heavily refactored FormulaParser as it had become quite messy. 

LTL-Operator precedence should now correctly mimic the behavior of PRISM.
tempestpy_adaptions
Tim Quatmann 4 years ago
committed by Stefan Pranger
parent
132c293105
commit
4cf2fd7d61
2 changed files with 400 additions and 321 deletions
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  1. 520
      src/storm-parsers/parser/FormulaParserGrammar.cpp
  2. 201
      src/storm-parsers/parser/FormulaParserGrammar.h

520
src/storm-parsers/parser/FormulaParserGrammar.cpp
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@ -17,81 +17,98 @@ namespace storm {
void FormulaParserGrammar::initialize() {
// Register all variables so we can parse them in the expressions.
for (auto variableTypePair : *constManager) {
identifiers_.add(variableTypePair.first.getName(), variableTypePair.first);
addIdentifierExpression(variableTypePair.first.getName(), variableTypePair.first);
}
// Set the identifier mapping to actually generate expressions.
expressionParser.setIdentifierMapping(&identifiers_);
longRunAverageRewardFormula = (qi::lit("LRA") | qi::lit("S") | qi::lit("MP"))[qi::_val = phoenix::bind(&FormulaParserGrammar::createLongRunAverageRewardFormula, phoenix::ref(*this))];
longRunAverageRewardFormula.name("long run average reward formula");
instantaneousRewardFormula = (qi::lit("I=") > expressionParser)[qi::_val = phoenix::bind(&FormulaParserGrammar::createInstantaneousRewardFormula, phoenix::ref(*this), qi::_1)];
instantaneousRewardFormula.name("instantaneous reward formula");
cumulativeRewardFormula = (qi::lit("C") >> timeBounds)[qi::_val = phoenix::bind(&FormulaParserGrammar::createCumulativeRewardFormula, phoenix::ref(*this), qi::_1)];
cumulativeRewardFormula.name("cumulative reward formula");
totalRewardFormula = (qi::lit("C"))[qi::_val = phoenix::bind(&FormulaParserGrammar::createTotalRewardFormula, phoenix::ref(*this))];
totalRewardFormula.name("total reward formula");
rewardPathFormula = longRunAverageRewardFormula | conditionalFormula(storm::logic::FormulaContext::Reward) | eventuallyFormula(storm::logic::FormulaContext::Reward) | cumulativeRewardFormula | instantaneousRewardFormula | totalRewardFormula;
rewardPathFormula.name("reward path formula");
expressionFormula = expressionParser[qi::_val = phoenix::bind(&FormulaParserGrammar::createAtomicExpressionFormula, phoenix::ref(*this), qi::_1)];
expressionFormula.name("expression formula");
label = qi::as_string[qi::raw[qi::lexeme[((qi::alpha | qi::char_('_')) >> *(qi::alnum | qi::char_('_')))]]];
keywords_.name("keyword");
nonStandardKeywords_.name("non-standard Storm-specific keyword");
relationalOperator_.name("relational operator");
optimalityOperator_.name("optimality operator");
rewardMeasureType_.name("reward measure");
operatorKeyword_.name("Operator keyword");
filterType_.name("filter type");
// Auxiliary helpers
isPathFormula = qi::eps(qi::_r1 == FormulaKind::Path);
noAmbiguousNonAssociativeOperator = !(qi::lit(qi::_r2)[qi::_pass = phoenix::bind(&FormulaParserGrammar::raiseAmbiguousNonAssociativeOperatorError, phoenix::ref(*this), qi::_r1, qi::_r2)]);
noAmbiguousNonAssociativeOperator.name("no ambiguous non-associative operator");
identifier %= qi::as_string[qi::raw[qi::lexeme[((qi::alpha | qi::char_('_') | qi::char_('.')) >> *(qi::alnum | qi::char_('_')))]]];
identifier.name("identifier");
label %= qi::as_string[qi::raw[qi::lexeme[((qi::alpha | qi::char_('_')) >> *(qi::alnum | qi::char_('_')))]]];
label.name("label");
quotedString %= qi::as_string[qi::lexeme[qi::omit[qi::char_('"')] > qi::raw[*(!qi::char_('"') >> qi::char_)] > qi::omit[qi::lit('"')]]];
quotedString.name("quoted string");
// PCTL-like Operator Formulas
operatorInformation = (-optimalityOperator_)[qi::_a = qi::_1] >>
((qi::lit("=") > qi::lit("?"))[qi::_val = phoenix::bind(&FormulaParserGrammar::createOperatorInformation, phoenix::ref(*this), qi::_a, boost::none, boost::none)]
| (relationalOperator_ > expressionParser)[qi::_val = phoenix::bind(&FormulaParserGrammar::createOperatorInformation, phoenix::ref(*this), qi::_a, qi::_1, qi::_2)]
);
operatorInformation.name("operator information");
operatorSubFormula = (( (qi::eps(qi::_r1 == storm::logic::FormulaContext::Probability) > formula(FormulaKind::Path, qi::_r1))
| (qi::eps(qi::_r1 == storm::logic::FormulaContext::Reward) > (longRunAverageRewardFormula | eventuallyFormula( qi::_r1) | cumulativeRewardFormula | instantaneousRewardFormula | totalRewardFormula))
| (qi::eps(qi::_r1 == storm::logic::FormulaContext::Time) > eventuallyFormula(qi::_r1))
| (qi::eps(qi::_r1 == storm::logic::FormulaContext::LongRunAverage) > formula(FormulaKind::State, storm::logic::FormulaContext::LongRunAverage))
) >> -(qi::lit("||") > formula(FormulaKind::Path, storm::logic::FormulaContext::Probability))
)[qi::_val = phoenix::bind(&FormulaParserGrammar::createConditionalFormula, phoenix::ref(*this), qi::_1, qi::_2, qi::_r1)];
operatorSubFormula.name("operator subformula");
rewardModelName = qi::eps(qi::_r1 == storm::logic::FormulaContext::Reward) >> (qi::lit("{\"") > label > qi::lit("\"}"));
rewardModelName.name("reward model name");
rewardMeasureType = qi::eps(qi::_r1 == storm::logic::FormulaContext::Reward || qi::_r1 == storm::logic::FormulaContext::Time) >> qi::lit("[") >> rewardMeasureType_ >> qi::lit("]");
rewardMeasureType.name("reward measure type");
operatorFormula = (operatorKeyword_[qi::_a = qi::_1] > -rewardMeasureType(qi::_a) > -rewardModelName(qi::_a) > operatorInformation > qi::lit("[") > operatorSubFormula(qi::_a) > qi::lit("]"))
[qi::_val = phoenix::bind(&FormulaParserGrammar::createOperatorFormula, phoenix::ref(*this), qi::_a, qi::_2, qi::_3, qi::_4, qi::_5)];
operatorFormula.name("operator formula");
// Atomic propositions
labelFormula = (qi::lit("\"") >> label >> qi::lit("\""))[qi::_val = phoenix::bind(&FormulaParserGrammar::createAtomicLabelFormula, phoenix::ref(*this), qi::_1)];
labelFormula.name("label formula");
booleanLiteralFormula = (qi::lit("true")[qi::_a = true] | qi::lit("false")[qi::_a = false])[qi::_val = phoenix::bind(&FormulaParserGrammar::createBooleanLiteralFormula, phoenix::ref(*this), qi::_a)];
booleanLiteralFormula.name("boolean literal formula");
operatorFormula = probabilityOperator | rewardOperator | longRunAverageOperator | timeOperator;
operatorFormula.name("operator formulas");
atomicStateFormula = booleanLiteralFormula | labelFormula | expressionFormula | (qi::lit("(") > untilFormula(qi::_r1) > qi::lit(")")) | operatorFormula;
atomicStateFormula.name("atomic state formula");
atomicStateFormulaWithoutExpression = booleanLiteralFormula | labelFormula | (qi::lit("(") > untilFormula(qi::_r1) > qi::lit(")")) | operatorFormula;
atomicStateFormula.name("atomic state formula without expression");
notStateFormula = (unaryBooleanOperator_ >> atomicStateFormulaWithoutExpression(qi::_r1))[qi::_val = phoenix::bind(&FormulaParserGrammar::createUnaryBooleanStateOrPathFormula, phoenix::ref(*this), qi::_2, qi::_1)] | atomicStateFormula(qi::_r1)[qi::_val = qi::_1];
notStateFormula.name("negation formula");
eventuallyFormula = (qi::lit("F") >> (-timeBounds) >> pathFormulaWithoutUntil(qi::_r1))[qi::_val = phoenix::bind(&FormulaParserGrammar::createEventuallyFormula, phoenix::ref(*this), qi::_1, qi::_r1, qi::_2)];
eventuallyFormula.name("eventually formula");
globallyFormula = (qi::lit("G") >> (-timeBounds) >> pathFormulaWithoutUntil(qi::_r1))[qi::_val = phoenix::bind(&FormulaParserGrammar::createGloballyFormula, phoenix::ref(*this), qi::_1, qi::_2)];
globallyFormula.name("globally formula");
nextFormula = (qi::lit("X") >> pathFormulaWithoutUntil(qi::_r1))[qi::_val = phoenix::bind(&FormulaParserGrammar::createNextFormula, phoenix::ref(*this), qi::_1)];
nextFormula.name("next formula");
pathFormulaWithoutUntil = eventuallyFormula(qi::_r1) | globallyFormula(qi::_r1) | nextFormula(qi::_r1) | stateFormula(qi::_r1);
pathFormulaWithoutUntil.name("path formula");
untilFormula = pathFormulaWithoutUntil(qi::_r1)[qi::_val = qi::_1] >> *(qi::lit("U") >> (-timeBounds) >> pathFormulaWithoutUntil(qi::_r1))[qi::_val = phoenix::bind(&FormulaParserGrammar::createUntilFormula, phoenix::ref(*this), qi::_val, qi::_1, qi::_2)];
untilFormula.name("until formula");
hoaPathFormula = qi::lit("HOA:") > qi::lit("{")
> quotedString[qi::_val = phoenix::bind(&FormulaParserGrammar::createHOAPathFormula, phoenix::ref(*this), qi::_1)]
>> *(qi::lit(",") > quotedString > qi::lit("->") > stateFormula(qi::_r1) )[phoenix::bind(&FormulaParserGrammar::addHoaAPMapping, phoenix::ref(*this), *qi::_val, qi::_1, qi::_2)]
> qi::lit("}");
basicPathFormula = (hoaPathFormula(qi::_r1)[qi::_val = qi::_1]) | untilFormula(qi::_r1)[qi::_val = qi::_1];
expressionFormula = expressionParser[qi::_val = phoenix::bind(&FormulaParserGrammar::createAtomicExpressionFormula, phoenix::ref(*this), qi::_1)];
expressionFormula.name("expression formula");
atomicPropositionFormula = (booleanLiteralFormula | labelFormula | expressionFormula);
atomicPropositionFormula.name("atomic proposition");
// Propositional Logic operators
// To correctly parse the operator precedences (! binds stronger than & binds stronger than |), we run through different "precedence levels" starting with the weakest binding operator.
basicPropositionalFormula = (qi::lit("(") >> (formula(qi::_r1, qi::_r2) > qi::lit(")")))
| atomicPropositionFormula // Should be checked before operator formulas and others. Otherwise, e.g. variable "Random" would be parsed as reward operator 'R' (followed by andom)
| negationPropositionalFormula(qi::_r1, qi::_r2)
| operatorFormula
| multiOperatorFormula
| quantileFormula
| gameFormula
| (isPathFormula(qi::_r1) >> prefixOperatorPathFormula(qi::_r2)); // Needed for e.g. F "a" & X "a" = F ("a" & (X "a"))
negationPropositionalFormula = (qi::lit("!") > basicPropositionalFormula(qi::_r1, qi::_r2))[qi::_val = phoenix::bind(&FormulaParserGrammar::createUnaryBooleanStateOrPathFormula, phoenix::ref(*this), qi::_1, storm::logic::UnaryBooleanOperatorType::Not)];
basicPropositionalFormula.name("basic propositional formula");
andLevelPropositionalFormula = basicPropositionalFormula(qi::_r1, qi::_r2)[qi::_val = qi::_1]
>> *( qi::lit("&")
> basicPropositionalFormula(qi::_r1, qi::_r2)[qi::_val = phoenix::bind(&FormulaParserGrammar::createBinaryBooleanStateOrPathFormula, phoenix::ref(*this), qi::_val, qi::_1, storm::logic::BinaryBooleanStateFormula::OperatorType::And)]);
andLevelPropositionalFormula.name("and precedence level propositional formula");
orLevelPropositionalFormula = andLevelPropositionalFormula(qi::_r1, qi::_r2)[qi::_val = qi::_1]
>> *( (!qi::lit("||") >> qi::lit("|")) // Make sure to not confuse with conditional operator "||"
> andLevelPropositionalFormula(qi::_r1, qi::_r2)[qi::_val = phoenix::bind(&FormulaParserGrammar::createBinaryBooleanStateOrPathFormula, phoenix::ref(*this), qi::_val, qi::_1, storm::logic::BinaryBooleanStateFormula::OperatorType::Or)]);
orLevelPropositionalFormula.name("or precedence level propositional formula");
propositionalFormula = orLevelPropositionalFormula(qi::_r1, qi::_r2);
// Path operators
// Again need to parse precedences correctly. Propositional formulae bind stronger than temporal operators.
basicPathFormula = propositionalFormula(FormulaKind::Path, qi::_r1) // Bracketed case is handled here as well
| prefixOperatorPathFormula(qi::_r1); // Needs to be checked *after* atomic expression formulas. Otherwise e.g. variable Fail would be parsed as "F (ail)"
prefixOperatorPathFormula = eventuallyFormula(qi::_r1)
| nextFormula(qi::_r1)
| globallyFormula(qi::_r1)
| hoaPathFormula(qi::_r1)
| multiBoundedPathFormula(qi::_r1);
basicPathFormula.name("basic path formula");
conditionalFormula = basicPathFormula(qi::_r1)[qi::_val = qi::_1] >> *(qi::lit("||") >> basicPathFormula(storm::logic::FormulaContext::Probability))[qi::_val = phoenix::bind(&FormulaParserGrammar::createConditionalFormula, phoenix::ref(*this), qi::_val, qi::_1, qi::_r1)];
conditionalFormula.name("conditional formula");
timeBoundReference = (-qi::lit("rew") >> rewardModelName)[qi::_val = phoenix::bind(&FormulaParserGrammar::createTimeBoundReference, phoenix::ref(*this), storm::logic::TimeBoundType::Reward, qi::_1)]
timeBoundReference = (-qi::lit("rew") >> rewardModelName(storm::logic::FormulaContext::Reward))[qi::_val = phoenix::bind(&FormulaParserGrammar::createTimeBoundReference, phoenix::ref(*this), storm::logic::TimeBoundType::Reward, qi::_1)]
| (qi::lit("steps"))[qi::_val = phoenix::bind(&FormulaParserGrammar::createTimeBoundReference, phoenix::ref(*this), storm::logic::TimeBoundType::Steps, boost::none)]
| (-qi::lit("time"))[qi::_val = phoenix::bind(&FormulaParserGrammar::createTimeBoundReference, phoenix::ref(*this), storm::logic::TimeBoundType::Time, boost::none)];
timeBoundReference.name("time bound reference");
timeBound = ((timeBoundReference >> qi::lit("[")) > expressionParser > qi::lit(",") > expressionParser > qi::lit("]"))
[qi::_val = phoenix::bind(&FormulaParserGrammar::createTimeBoundFromInterval, phoenix::ref(*this), qi::_2, qi::_3, qi::_1)]
| ( timeBoundReference >> (qi::lit("<=")[qi::_a = true, qi::_b = false] | qi::lit("<")[qi::_a = true, qi::_b = true] | qi::lit(">=")[qi::_a = false, qi::_b = false] | qi::lit(">")[qi::_a = false, qi::_b = true]) >> expressionParser)
@ -99,79 +116,63 @@ namespace storm {
| ( timeBoundReference >> qi::lit("=") >> expressionParser)
[qi::_val = phoenix::bind(&FormulaParserGrammar::createTimeBoundFromInterval, phoenix::ref(*this), qi::_2, qi::_2, qi::_1)];
timeBound.name("time bound");
timeBounds = (timeBound % qi::lit(",")) | (((-qi::lit("^") >> qi::lit("{")) >> (timeBound % qi::lit(","))) >> qi::lit("}"));
timeBounds.name("time bounds");
pathFormula = conditionalFormula(qi::_r1);
eventuallyFormula = (qi::lit("F") > (-timeBounds) > basicPathFormula(qi::_r1))[qi::_val = phoenix::bind(&FormulaParserGrammar::createEventuallyFormula, phoenix::ref(*this), qi::_1, qi::_r1, qi::_2)];
eventuallyFormula.name("eventually formula");
nextFormula = (qi::lit("X") > basicPathFormula(qi::_r1))[qi::_val = phoenix::bind(&FormulaParserGrammar::createNextFormula, phoenix::ref(*this), qi::_1)];
nextFormula.name("next formula");
globallyFormula = (qi::lit("G") > basicPathFormula(qi::_r1))[qi::_val = phoenix::bind(&FormulaParserGrammar::createGloballyFormula, phoenix::ref(*this), qi::_1)];
globallyFormula.name("globally formula");
hoaPathFormula = qi::lit("HOA:") > qi::lit("{")
> quotedString[qi::_val = phoenix::bind(&FormulaParserGrammar::createHOAPathFormula, phoenix::ref(*this), qi::_1)]
>> *(qi::lit(",") > quotedString > qi::lit("->") > formula(FormulaKind::Path, qi::_r1) )[phoenix::bind(&FormulaParserGrammar::addHoaAPMapping, phoenix::ref(*this), *qi::_val, qi::_1, qi::_2)]
> qi::lit("}");
multiBoundedPathFormulaOperand = pathFormula(qi::_r1)[qi::_pass = phoenix::bind(&FormulaParserGrammar::isValidMultiBoundedPathFormulaOperand, phoenix::ref(*this), qi::_val)];
multiBoundedPathFormulaOperand.name("multi bounded path formula operand");
multiBoundedPathFormula = (qi::lit("multi") > qi::lit("(") >> (multiBoundedPathFormulaOperand(qi::_r1) % qi::lit(",")) >> qi::lit(")"))[qi::_val = phoenix::bind(&FormulaParserGrammar::createMultiBoundedPathFormula, phoenix::ref(*this), qi::_1)];
multiBoundedPathFormula.name("multi bounded path formula");
untilLevelPathFormula = basicPathFormula(qi::_r1)[qi::_val = qi::_1]
>> -( (qi::lit("U")
> (-timeBounds) > basicPathFormula(qi::_r1))[qi::_val = phoenix::bind(&FormulaParserGrammar::createUntilFormula, phoenix::ref(*this), qi::_val, qi::_1, qi::_2)])
>> (qi::eps > noAmbiguousNonAssociativeOperator(qi::_val,std::string("U"))); // Do not parse a U b U c
untilLevelPathFormula.name("until precedence level path formula");
pathFormula = untilLevelPathFormula(qi::_r1);
pathFormula.name("path formula");
rewardMeasureType = qi::lit("[") >> rewardMeasureType_ >> qi::lit("]");
rewardMeasureType.name("reward measure type");
operatorInformation = (-optimalityOperator_[qi::_a = qi::_1] >> ((relationalOperator_[qi::_b = qi::_1] > expressionParser[qi::_c = qi::_1]) | (qi::lit("=") > qi::lit("?"))))[qi::_val = phoenix::bind(&FormulaParserGrammar::createOperatorInformation, phoenix::ref(*this), qi::_a, qi::_b, qi::_c)];
operatorInformation.name("operator information");
longRunAverageOperator = ((qi::lit("LRA") | qi::lit("S")) > operatorInformation > qi::lit("[") > stateFormula(storm::logic::FormulaContext::LongRunAverage) > qi::lit("]"))[qi::_val = phoenix::bind(&FormulaParserGrammar::createLongRunAverageOperatorFormula, phoenix::ref(*this), qi::_1, qi::_2)];
longRunAverageOperator.name("long-run average operator");
rewardModelName = qi::lit("{\"") > label > qi::lit("\"}");
rewardModelName.name("reward model name");
rewardOperator = (qi::lit("R") > -rewardMeasureType > -rewardModelName > operatorInformation > qi::lit("[") > rewardPathFormula > qi::lit("]"))[qi::_val = phoenix::bind(&FormulaParserGrammar::createRewardOperatorFormula, phoenix::ref(*this), qi::_1, qi::_2, qi::_3, qi::_4)];
rewardOperator.name("reward operator");
timeOperator = (qi::lit("T") > -rewardMeasureType > operatorInformation > qi::lit("[") > eventuallyFormula(storm::logic::FormulaContext::Time) > qi::lit("]"))[qi::_val = phoenix::bind(&FormulaParserGrammar::createTimeOperatorFormula, phoenix::ref(*this), qi::_1, qi::_2, qi::_3)];
timeOperator.name("time operator");
probabilityOperator = (qi::lit("P") > operatorInformation > qi::lit("[") > pathFormula(storm::logic::FormulaContext::Probability) > qi::lit("]"))[qi::_val = phoenix::bind(&FormulaParserGrammar::createProbabilityOperatorFormula, phoenix::ref(*this), qi::_1, qi::_2)];
probabilityOperator.name("probability operator");
andStateFormula = notStateFormula(qi::_r1)[qi::_val = qi::_1] >> *(qi::lit("&") >> notStateFormula(qi::_r1))[qi::_val = phoenix::bind(&FormulaParserGrammar::createBinaryBooleanStateOrPathFormula, phoenix::ref(*this), qi::_val, qi::_1, storm::logic::BinaryBooleanStateFormula::OperatorType::And)];
andStateFormula.name("and state formula");
orStateFormula = andStateFormula(qi::_r1)[qi::_val = qi::_1] >> *(qi::lit("|") >> andStateFormula(qi::_r1))[qi::_val = phoenix::bind(&FormulaParserGrammar::createBinaryBooleanStateOrPathFormula, phoenix::ref(*this), qi::_val, qi::_1, storm::logic::BinaryBooleanStateFormula::OperatorType::Or)];
orStateFormula.name("or state formula");
multiFormula = (qi::lit("multi") > qi::lit("(") >> ((pathFormula(storm::logic::FormulaContext::Probability) | stateFormula(storm::logic::FormulaContext::Probability)) % qi::lit(",")) >> qi::lit(")"))[qi::_val = phoenix::bind(&FormulaParserGrammar::createMultiFormula, phoenix::ref(*this), qi::_1)];
multiFormula.name("Multi formula");
identifier %= qi::as_string[qi::raw[qi::lexeme[((qi::alpha | qi::char_('_') | qi::char_('.')) >> *(qi::alnum | qi::char_('_')))]]];
identifier.name("identifier");
quantileBoundVariable = (-(qi::lit("min")[qi::_a = storm::solver::OptimizationDirection::Minimize] | qi::lit("max")[qi::_a = storm::solver::OptimizationDirection::Maximize]) >> identifier >> qi::lit(","))[qi::_val = phoenix::bind(&FormulaParserGrammar::createQuantileBoundVariables, phoenix::ref(*this), qi::_a, qi::_1)];
quantileBoundVariable.name("quantile bound variable");
quantileFormula = (qi::lit("quantile") > qi::lit("(") >> *(quantileBoundVariable) >> stateFormula(storm::logic::FormulaContext::Undefined) > qi::lit(")"))[qi::_val = phoenix::bind(&FormulaParserGrammar::createQuantileFormula, phoenix::ref(*this), qi::_1, qi::_2)];
quantileFormula.name("Quantile formula");
// Quantitative path formulae (reward)
longRunAverageRewardFormula = (qi::lit("LRA") | qi::lit("S") | qi::lit("MP"))[qi::_val = phoenix::bind(&FormulaParserGrammar::createLongRunAverageRewardFormula, phoenix::ref(*this))];
longRunAverageRewardFormula.name("long run average reward formula");
instantaneousRewardFormula = (qi::lit("I=") > expressionParser)[qi::_val = phoenix::bind(&FormulaParserGrammar::createInstantaneousRewardFormula, phoenix::ref(*this), qi::_1)];
instantaneousRewardFormula.name("instantaneous reward formula");
cumulativeRewardFormula = (qi::lit("C") >> timeBounds)[qi::_val = phoenix::bind(&FormulaParserGrammar::createCumulativeRewardFormula, phoenix::ref(*this), qi::_1)];
cumulativeRewardFormula.name("cumulative reward formula");
totalRewardFormula = (qi::lit("C"))[qi::_val = phoenix::bind(&FormulaParserGrammar::createTotalRewardFormula, phoenix::ref(*this))];
totalRewardFormula.name("total reward formula");
// Game Formulae
playerCoalition = (-((identifier[phoenix::push_back(qi::_a, qi::_1)] | qi::uint_[phoenix::push_back(qi::_a, qi::_1)]) % ','))[qi::_val = phoenix::bind(&FormulaParserGrammar::createPlayerCoalition, phoenix::ref(*this), qi::_a)];
playerCoalition.name("player coalition");
gameFormula = (qi::lit("<<") > playerCoalition > qi::lit(">>") > operatorFormula)[qi::_val = phoenix::bind(&FormulaParserGrammar::createGameFormula, phoenix::ref(*this), qi::_1, qi::_2)];
gameFormula.name("game formula");
shieldExpression = (qi::lit("<") > label > qi::lit(",") > shieldingType > -(qi::lit(",") > shieldComparison) > qi::lit(">"))[qi::_val = phoenix::bind(&FormulaParserGrammar::createShieldExpression, phoenix::ref(*this), qi::_2, qi::_1, qi::_3)];
shieldExpression.name("shield expression");
shieldingType = (qi::lit("PreSafety")[qi::_val = storm::logic::ShieldingType::PreSafety] |
qi::lit("PostSafety")[qi::_val = storm::logic::ShieldingType::PostSafety] |
qi::lit("Optimal")[qi::_val = storm::logic::ShieldingType::Optimal]) > -qi::lit("Shield");
shieldingType.name("shielding type");
probability = qi::double_[qi::_pass = (qi::_1 >= 0) & (qi::_1 <= 1.0), qi::_val = qi::_1 ];
probability.name("double between 0 and 1");
shieldComparison = ((qi::lit("lambda")[qi::_a = storm::logic::ShieldComparison::Relative] |
qi::lit("gamma")[qi::_a = storm::logic::ShieldComparison::Absolute]) > qi::lit("=") > probability)[qi::_val = phoenix::bind(&FormulaParserGrammar::createShieldComparisonStruct, phoenix::ref(*this), qi::_a, qi::_1)];
shieldComparison.name("shield comparison type");
stateFormula = (orStateFormula(qi::_r1) | multiFormula | quantileFormula);
stateFormula.name("state formula");
quotedString %= qi::as_string[qi::lexeme[qi::omit[qi::char_('"')] > qi::raw[*(!qi::char_('"') >> qi::char_)] > qi::omit[qi::lit('"')]]];
quotedString.name("quoted string");
// Multi-objective, quantiles
multiOperatorFormula = (qi::lit("multi") > qi::lit("(")
> (operatorFormula % qi::lit(","))
> qi::lit(")"))[qi::_val = phoenix::bind(&FormulaParserGrammar::createMultiOperatorFormula, phoenix::ref(*this), qi::_1)];
multiOperatorFormula.name("multi-objective operator formula");
quantileBoundVariable = (-optimalityOperator_ > identifier > qi::lit(","))[qi::_val = phoenix::bind(&FormulaParserGrammar::createQuantileBoundVariables, phoenix::ref(*this), qi::_1, qi::_2)];
quantileBoundVariable.name("quantile bound variable");
quantileFormula = (qi::lit("quantile") > qi::lit("(") > *(quantileBoundVariable) > operatorFormula[qi::_pass = phoenix::bind(&FormulaParserGrammar::isBooleanReturnType, phoenix::ref(*this), qi::_1, true)] > qi::lit(")"))[qi::_val = phoenix::bind(&FormulaParserGrammar::createQuantileFormula, phoenix::ref(*this), qi::_1, qi::_2)];
quantileFormula.name("Quantile formula");
// General formulae
formula = (isPathFormula(qi::_r1) >> pathFormula(qi::_r2) | propositionalFormula(qi::_r1, qi::_r2));
formula.name("formula");
topLevelFormula = formula(FormulaKind::State, storm::logic::FormulaContext::Undefined);
topLevelFormula.name("top-level formula");
formulaName = qi::lit("\"") >> identifier >> qi::lit("\"") >> qi::lit(":");
formulaName.name("formula name");
@ -182,8 +183,9 @@ namespace storm {
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Woverloaded-shift-op-parentheses"
filterProperty = (-formulaName >> qi::lit("filter") > qi::lit("(") > filterType_ > qi::lit(",") > stateFormula(storm::logic::FormulaContext::Undefined) > qi::lit(",") > stateFormula(storm::logic::FormulaContext::Undefined) > qi::lit(")"))[qi::_val = phoenix::bind(&FormulaParserGrammar::createProperty, phoenix::ref(*this), qi::_1, qi::_2, qi::_3, qi::_4)] | (-formulaName >> stateFormula(storm::logic::FormulaContext::Undefined))[qi::_val = phoenix::bind(&FormulaParserGrammar::createPropertyWithDefaultFilterTypeAndStates, phoenix::ref(*this), qi::_1, qi::_2)] | (-formulaName >> shieldExpression >> stateFormula(storm::logic::FormulaContext::Undefined))[qi::_val = phoenix::bind(&FormulaParserGrammar::createShieldingProperty, phoenix::ref(*this), qi::_1, qi::_3, qi::_2)];
filterProperty = (-formulaName >> qi::lit("filter") > qi::lit("(") > filterType_ > qi::lit(",") > topLevelFormula > qi::lit(",") > formula(FormulaKind::State, storm::logic::FormulaContext::Undefined)> qi::lit(")"))[qi::_val = phoenix::bind(&FormulaParserGrammar::createProperty, phoenix::ref(*this), qi::_1, qi::_2, qi::_3, qi::_4)] |
(-formulaName >> topLevelFormula)[qi::_val = phoenix::bind(&FormulaParserGrammar::createPropertyWithDefaultFilterTypeAndStates, phoenix::ref(*this), qi::_1, qi::_2)];
filterProperty.name("filter property");
#pragma clang diagnostic pop
@ -195,62 +197,91 @@ namespace storm {
start.name("start");
// Enable the following lines to print debug output for most the rules.
//debug(start);
//debug(constantDefinition);
//debug(stateFormula);
//debug(orStateFormula);
//debug(andStateFormula);
//debug(probabilityOperator);
//debug(rewardOperator);
//debug(longRunAverageOperator);
//debug(timeOperator);
//debug(pathFormulaWithoutUntil);
//debug(pathFormula);
//debug(conditionalFormula);
//debug(nextFormula);
//debug(globallyFormula);
//debug(eventuallyFormula);
//debug(atomicStateFormula);
//debug(booleanLiteralFormula);
//debug(labelFormula);
//debug(expressionFormula);
//debug(rewardPathFormula);
//debug(cumulativeRewardFormula);
//debug(totalRewardFormula);
//debug(instantaneousRewardFormula);
//debug(multiFormula);
// debug(rewardModelName)
// debug(rewardMeasureType)
// debug(operatorFormula)
// debug(labelFormula)
// debug(expressionFormula)
// debug(booleanLiteralFormula)
// debug(atomicPropositionFormula)
// debug(basicPropositionalFormula)
// debug(negationPropositionalFormula)
// debug(andLevelPropositionalFormula)
// debug(orLevelPropositionalFormula)
// debug(propositionalFormula)
// debug(timeBoundReference)
// debug(timeBound)
// debug(timeBounds)
// debug(eventuallyFormula)
// debug(nextFormula)
// debug(globallyFormula)
// debug(hoaPathFormula)
// debug(multiBoundedPathFormula)
// debug(prefixOperatorPathFormula)
// debug(basicPathFormula)
// debug(untilLevelPathFormula)
// debug(pathFormula)
// debug(longRunAverageRewardFormula)
// debug(instantaneousRewardFormula)
// debug(cumulativeRewardFormula)
// debug(totalRewardFormula)
// debug(playerCoalition)
// debug(gameFormula)
// debug(multiOperatorFormula)
// debug(quantileBoundVariable)
// debug(quantileFormula)
// debug(formula)
// debug(topLevelFormula)
// debug(formulaName)
// debug(filterProperty)
// debug(constantDefinition )
// debug(start)
// Enable error reporting.
qi::on_error<qi::fail>(start, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(stateFormula, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(orStateFormula, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(andStateFormula, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(probabilityOperator, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(rewardOperator, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(longRunAverageOperator, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(timeOperator, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(operatorInformation, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(pathFormulaWithoutUntil, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(pathFormula, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(conditionalFormula, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(untilFormula, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(hoaPathFormula, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(basicPathFormula, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(nextFormula, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(globallyFormula, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(eventuallyFormula, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(atomicStateFormula, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(booleanLiteralFormula, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(rewardModelName, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(rewardMeasureType, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(operatorFormula, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(labelFormula, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(expressionFormula, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(rewardPathFormula, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(booleanLiteralFormula, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(atomicPropositionFormula, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(basicPropositionalFormula, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(negationPropositionalFormula, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(andLevelPropositionalFormula, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(orLevelPropositionalFormula, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(propositionalFormula, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(timeBoundReference, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(timeBound, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(timeBounds, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(eventuallyFormula, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(nextFormula, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(globallyFormula, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(hoaPathFormula, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(multiBoundedPathFormula, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(prefixOperatorPathFormula, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(basicPathFormula, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(untilLevelPathFormula, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(pathFormula, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(longRunAverageRewardFormula, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(instantaneousRewardFormula, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(cumulativeRewardFormula, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(totalRewardFormula, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(instantaneousRewardFormula, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(multiFormula, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(playerCoalition, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(gameFormula, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(multiOperatorFormula, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(quantileBoundVariable, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(quantileFormula, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(formula, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(topLevelFormula, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(formulaName, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(filterProperty, handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(constantDefinition , handler(qi::_1, qi::_2, qi::_3, qi::_4));
qi::on_error<qi::fail>(start, handler(qi::_1, qi::_2, qi::_3, qi::_4));
}
void FormulaParserGrammar::addIdentifierExpression(std::string const& identifier, storm::expressions::Expression const& expression) {
STORM_LOG_WARN_COND(keywords_.find(identifier) == nullptr, "Identifier `" << identifier << "' coincides with a reserved keyword or operator. Property expressions using the variable or constant '" << identifier << "' will not be parsed correctly.");
STORM_LOG_WARN_COND(nonStandardKeywords_.find(identifier) == nullptr, "Identifier `" << identifier << "' coincides with a reserved keyword or operator. Property expressions using the variable or constant '" << identifier << "' might not be parsed correctly.");
this->identifiers_.add(identifier, expression);
}
@ -403,8 +434,13 @@ namespace storm {
hoaFormula_.addAPMapping(ap, expression);
}
std::shared_ptr<storm::logic::Formula const> FormulaParserGrammar::createConditionalFormula(std::shared_ptr<storm::logic::Formula const> const& leftSubformula, std::shared_ptr<storm::logic::Formula const> const& rightSubformula, storm::logic::FormulaContext context) const {
return std::shared_ptr<storm::logic::Formula const>(new storm::logic::ConditionalFormula(leftSubformula, rightSubformula, context));
std::shared_ptr<storm::logic::Formula const> FormulaParserGrammar::createConditionalFormula(std::shared_ptr<storm::logic::Formula const> const& leftSubformula, boost::optional<std::shared_ptr<storm::logic::Formula const>> const& rightSubformula, storm::logic::FormulaContext context) const {
if (rightSubformula) {
return std::shared_ptr<storm::logic::Formula const>(new storm::logic::ConditionalFormula(leftSubformula, rightSubformula.get(), context));
} else {
// If there is no rhs, just return the lhs
return leftSubformula;
}
}
storm::logic::OperatorInformation FormulaParserGrammar::createOperatorInformation(boost::optional<storm::OptimizationDirection> const& optimizationDirection, boost::optional<storm::logic::ComparisonType> const& comparisonType, boost::optional<storm::expressions::Expression> const& threshold) const {
@ -415,7 +451,25 @@ namespace storm {
return storm::logic::OperatorInformation(optimizationDirection, boost::none);
}
}
std::shared_ptr<storm::logic::Formula const> FormulaParserGrammar::createOperatorFormula(storm::logic::FormulaContext const& context, boost::optional<storm::logic::RewardMeasureType> const& rewardMeasureType, boost::optional<std::string> const& rewardModelName, storm::logic::OperatorInformation const& operatorInformation, std::shared_ptr<storm::logic::Formula const> const& subformula) {
switch(context) {
case storm::logic::FormulaContext::Probability:
STORM_LOG_ASSERT(!rewardMeasureType && !rewardModelName, "Probability operator with reward information parsed");
return createProbabilityOperatorFormula(operatorInformation, subformula);
case storm::logic::FormulaContext::Reward:
return createRewardOperatorFormula(rewardMeasureType, rewardModelName, operatorInformation, subformula);
case storm::logic::FormulaContext::LongRunAverage:
STORM_LOG_ASSERT(!rewardMeasureType && !rewardModelName, "LRA operator with reward information parsed");
return createLongRunAverageOperatorFormula(operatorInformation, subformula);
case storm::logic::FormulaContext::Time:
STORM_LOG_ASSERT(!rewardModelName, "Time operator with reward model name parsed");
return createTimeOperatorFormula(rewardMeasureType, operatorInformation, subformula);
default:
STORM_LOG_THROW(false, storm::exceptions::WrongFormatException, "Unexpected formula context.");
}
}
std::shared_ptr<storm::logic::Formula const> FormulaParserGrammar::createLongRunAverageOperatorFormula(storm::logic::OperatorInformation const& operatorInformation, std::shared_ptr<storm::logic::Formula const> const& subformula) const {
return std::shared_ptr<storm::logic::Formula const>(new storm::logic::LongRunAverageOperatorFormula(subformula, operatorInformation));
}
@ -467,53 +521,58 @@ namespace storm {
std::shared_ptr<storm::logic::Formula const> FormulaParserGrammar::createBinaryBooleanStateOrPathFormula(std::shared_ptr<storm::logic::Formula const> const& leftSubformula, std::shared_ptr<storm::logic::Formula const> const& rightSubformula, storm::logic::BinaryBooleanOperatorType operatorType) {
if (leftSubformula->isStateFormula() && rightSubformula->isStateFormula()) {
return createBinaryBooleanStateFormula(leftSubformula, rightSubformula, operatorType);
} else {
} else if (leftSubformula->isPathFormula() || rightSubformula->isPathFormula()) {
return createBinaryBooleanPathFormula(leftSubformula, rightSubformula, operatorType);
}
STORM_LOG_THROW(false, storm::exceptions::WrongFormatException, "Subformulas have unexpected type.");
}
std::shared_ptr<storm::logic::Formula const> FormulaParserGrammar::createUnaryBooleanStateOrPathFormula(std::shared_ptr<storm::logic::Formula const> const& subformula, boost::optional<storm::logic::UnaryBooleanOperatorType> const& operatorType) {
if (subformula->isStateFormula()) {
return createUnaryBooleanStateFormula(subformula, operatorType);
} else {
} else if (subformula->isPathFormula()) {
return createUnaryBooleanPathFormula(subformula, operatorType);
}
STORM_LOG_THROW(false, storm::exceptions::WrongFormatException, "Subformulas have unexpected type.");
}
std::shared_ptr<storm::logic::Formula const> FormulaParserGrammar::createMultiFormula(std::vector<std::shared_ptr<storm::logic::Formula const>> const& subformulas) {
bool isMultiDimensionalBoundedUntilFormula = !subformulas.empty();
for (auto const& subformula : subformulas) {
if (!subformula->isBoundedUntilFormula()) {
isMultiDimensionalBoundedUntilFormula = false;
break;
bool FormulaParserGrammar::isValidMultiBoundedPathFormulaOperand(std::shared_ptr<storm::logic::Formula const> const& operand) {
if (operand->isBoundedUntilFormula()) {
if (!operand->asBoundedUntilFormula().isMultiDimensional()) {
return true;
}
STORM_LOG_ERROR("Composition of multidimensional bounded until formula must consist of single dimension subformulas. Got '" << *operand << "' instead.");
}
return false;
}
if (isMultiDimensionalBoundedUntilFormula) {
std::vector<std::shared_ptr<storm::logic::Formula const>> leftSubformulas, rightSubformulas;
std::vector<boost::optional<storm::logic::TimeBound>> lowerBounds, upperBounds;
std::vector<storm::logic::TimeBoundReference> timeBoundReferences;
for (auto const& subformula : subformulas) {
auto const& f = subformula->asBoundedUntilFormula();
STORM_LOG_THROW(!f.isMultiDimensional(), storm::exceptions::WrongFormatException, "Composition of multidimensional bounded until formula must consist of single dimension subformulas. Got '" << f << "' instead.");
leftSubformulas.push_back(f.getLeftSubformula().asSharedPointer());
rightSubformulas.push_back(f.getRightSubformula().asSharedPointer());
if (f.hasLowerBound()) {
lowerBounds.emplace_back(storm::logic::TimeBound(f.isLowerBoundStrict(), f.getLowerBound()));
} else {
lowerBounds.emplace_back();
}
if (f.hasUpperBound()) {
upperBounds.emplace_back(storm::logic::TimeBound(f.isUpperBoundStrict(), f.getUpperBound()));
} else {
upperBounds.emplace_back();
}
timeBoundReferences.push_back(f.getTimeBoundReference());
std::shared_ptr<storm::logic::Formula const> FormulaParserGrammar::createMultiBoundedPathFormula(std::vector<std::shared_ptr<storm::logic::Formula const>> const& subformulas) {
std::vector<std::shared_ptr<storm::logic::Formula const>> leftSubformulas, rightSubformulas;
std::vector<boost::optional<storm::logic::TimeBound>> lowerBounds, upperBounds;
std::vector<storm::logic::TimeBoundReference> timeBoundReferences;
for (auto const& subformula : subformulas) {
STORM_LOG_THROW(subformula->isBoundedUntilFormula(), storm::exceptions::WrongFormatException, "multi-path formulas require bounded until (or eventually) subformulae. Got '" << *subformula << "' instead.");
auto const& f = subformula->asBoundedUntilFormula();
STORM_LOG_THROW(!f.isMultiDimensional(), storm::exceptions::WrongFormatException, "Composition of multidimensional bounded until formula must consist of single dimension subformulas. Got '" << f << "' instead.");
leftSubformulas.push_back(f.getLeftSubformula().asSharedPointer());
rightSubformulas.push_back(f.getRightSubformula().asSharedPointer());
if (f.hasLowerBound()) {
lowerBounds.emplace_back(storm::logic::TimeBound(f.isLowerBoundStrict(), f.getLowerBound()));
} else {
lowerBounds.emplace_back();
}
return std::shared_ptr<storm::logic::Formula const>(new storm::logic::BoundedUntilFormula(leftSubformulas, rightSubformulas, lowerBounds, upperBounds, timeBoundReferences));
} else {
return std::shared_ptr<storm::logic::Formula const>(new storm::logic::MultiObjectiveFormula(subformulas));
if (f.hasUpperBound()) {
upperBounds.emplace_back(storm::logic::TimeBound(f.isUpperBoundStrict(), f.getUpperBound()));
} else {
upperBounds.emplace_back();
}
timeBoundReferences.push_back(f.getTimeBoundReference());
}
return std::shared_ptr<storm::logic::Formula const>(new storm::logic::BoundedUntilFormula(leftSubformulas, rightSubformulas, lowerBounds, upperBounds, timeBoundReferences));
}
std::shared_ptr<storm::logic::Formula const> FormulaParserGrammar::createMultiOperatorFormula(std::vector<std::shared_ptr<storm::logic::Formula const>> const& subformulas) {
return std::shared_ptr<storm::logic::Formula const>(new storm::logic::MultiObjectiveFormula(subformulas));
}
storm::expressions::Variable FormulaParserGrammar::createQuantileBoundVariables(boost::optional<storm::solver::OptimizationDirection> const& dir, std::string const& variableName) {
@ -561,30 +620,7 @@ namespace storm {
return storm::jani::Property(std::to_string(propertyCount), formula, this->getUndefinedConstants(formula));
}
}
std::pair<storm::logic::ShieldComparison, double> FormulaParserGrammar::createShieldComparisonStruct(storm::logic::ShieldComparison comparisonType, double value) {
return std::make_pair(comparisonType, value);
}
std::shared_ptr<storm::logic::ShieldExpression const> FormulaParserGrammar::createShieldExpression(storm::logic::ShieldingType type, std::string name, boost::optional<std::pair<storm::logic::ShieldComparison, double>> comparisonStruct) {
if(comparisonStruct.is_initialized()) {
STORM_LOG_WARN_COND(type != storm::logic::ShieldingType::Optimal , "Comparison for optimal shield will be ignored.");
return std::shared_ptr<storm::logic::ShieldExpression>(new storm::logic::ShieldExpression(type, name, comparisonStruct.get().first, comparisonStruct.get().second));
} else {
STORM_LOG_THROW(type == storm::logic::ShieldingType::Optimal , storm::exceptions::WrongFormatException, "Construction of safety shield needs a comparison parameter (lambda or gamma)");
return std::shared_ptr<storm::logic::ShieldExpression>(new storm::logic::ShieldExpression(type, name));
}
}
storm::jani::Property FormulaParserGrammar::createShieldingProperty(boost::optional<std::string> const& propertyName, std::shared_ptr<storm::logic::Formula const> const& formula, std::shared_ptr<storm::logic::ShieldExpression const> const& shieldExpression) {
++propertyCount;
if (propertyName) {
return storm::jani::Property(propertyName.get(), formula, this->getUndefinedConstants(formula), shieldExpression);
} else {
return storm::jani::Property(std::to_string(propertyCount), formula, this->getUndefinedConstants(formula), shieldExpression);
}
}
storm::logic::PlayerCoalition FormulaParserGrammar::createPlayerCoalition(std::vector<boost::variant<std::string, storm::storage::PlayerIndex>> const& playerIds) const {
return storm::logic::PlayerCoalition(playerIds);
}
@ -592,5 +628,19 @@ namespace storm {
std::shared_ptr<storm::logic::Formula const> FormulaParserGrammar::createGameFormula(storm::logic::PlayerCoalition const& coalition, std::shared_ptr<storm::logic::Formula const> const& subformula) const {
return std::shared_ptr<storm::logic::Formula const>(new storm::logic::GameFormula(coalition, subformula));
}
bool FormulaParserGrammar::isBooleanReturnType(std::shared_ptr<storm::logic::Formula const> const& formula, bool raiseErrorMessage) {
if (formula->hasQualitativeResult()) {
return true;
}
STORM_LOG_ERROR_COND(!raiseErrorMessage, "Formula " << *formula << " does not have a Boolean return type.");
return false;
}
bool FormulaParserGrammar::raiseAmbiguousNonAssociativeOperatorError(std::shared_ptr<storm::logic::Formula const> const& formula, std::string const& op) {
STORM_LOG_ERROR( "Ambiguous use of non-associative operator '" << op << "' in formula '" << *formula << " U ... '");
return true;
}
}
}

201
src/storm-parsers/parser/FormulaParserGrammar.h
View File

@ -53,14 +53,32 @@ namespace storm {
("F", 5)
("G", 6)
("X", 7)
("multi", 8)
("quantile", 9);
("U", 8)
("C", 9)
("I", 10)
("P", 11)
("R", 12)
("S", 13);
}
};
// A parser used for recognizing the keywords.
// A parser used for recognizing the standard keywords (that also apply to e.g. PRISM). These shall not coincide with expression variables
keywordsStruct keywords_;
struct nonStandardKeywordsStruct : qi::symbols<char, uint_fast64_t> {
nonStandardKeywordsStruct() {
add
("T", 1)
("LRA", 2)
("MP", 3)
("multi", 4)
("quantile", 5)
("HOA", 6);
}
};
// A parser used for recognizing non-standard Storm-specific keywords.
// For compatibility, we still try to parse expression variables whose identifier is such a keyword and just issue a warning.
nonStandardKeywordsStruct nonStandardKeywords_;
struct relationalOperatorStruct : qi::symbols<char, storm::logic::ComparisonType> {
relationalOperatorStruct() {
add
@ -73,28 +91,7 @@ namespace storm {
// A parser used for recognizing the operators at the "relational" precedence level.
relationalOperatorStruct relationalOperator_;
struct binaryBooleanOperatorStruct : qi::symbols<char, storm::logic::BinaryBooleanStateFormula::OperatorType> {
binaryBooleanOperatorStruct() {
add
("&", storm::logic::BinaryBooleanStateFormula::OperatorType::And)
("|", storm::logic::BinaryBooleanStateFormula::OperatorType::Or);
}
};
// A parser used for recognizing the operators at the "binary" precedence level.
binaryBooleanOperatorStruct binaryBooleanOperator_;
struct unaryBooleanOperatorStruct : qi::symbols<char, storm::logic::UnaryBooleanStateFormula::OperatorType> {
unaryBooleanOperatorStruct() {
add
("!", storm::logic::UnaryBooleanStateFormula::OperatorType::Not);
}
};
// A parser used for recognizing the operators at the "unary" precedence level.
unaryBooleanOperatorStruct unaryBooleanOperator_;
struct optimalityOperatorStruct : qi::symbols<char, storm::OptimizationDirection> {
optimalityOperatorStruct() {
add
@ -135,6 +132,24 @@ namespace storm {
// A parser used for recognizing the filter type.
filterTypeStruct filterType_;
struct operatorKeyword : qi::symbols<char, storm::logic::FormulaContext> {
operatorKeyword() {
add
("P", storm::logic::FormulaContext::Probability)
("R", storm::logic::FormulaContext::Reward)
("T", storm::logic::FormulaContext::Time)
("LRA", storm::logic::FormulaContext::LongRunAverage)
("S", storm::logic::FormulaContext::LongRunAverage);
}
};
operatorKeyword operatorKeyword_;
enum class FormulaKind {
State, /// PCTL*-like (boolean) state formula
Path, /// PCTL*-like (boolean) path formula (include state formulae)
};
qi::rule<Iterator, qi::unused_type(FormulaKind), Skipper> isPathFormula;
// The manager used to parse expressions.
std::shared_ptr<storm::expressions::ExpressionManager const> constManager;
@ -146,75 +161,84 @@ namespace storm {
// A symbol table that is a mapping from identifiers that can be used in expressions to the expressions
// they are to be replaced with.
qi::symbols<char, storm::expressions::Expression> identifiers_;
qi::rule<Iterator, std::vector<storm::jani::Property>(), Skipper> start;
qi::rule<Iterator, qi::unused_type(), qi::locals<ConstantDataType>, Skipper> constantDefinition;
// Rules
// Auxiliary helpers
qi::rule<Iterator, qi::unused_type(std::shared_ptr<storm::logic::Formula const>, std::string), Skipper> noAmbiguousNonAssociativeOperator;
qi::rule<Iterator, std::string(), Skipper> identifier;
qi::rule<Iterator, std::string(), Skipper> formulaName;
qi::rule<Iterator, std::string(), Skipper> quotedString;
qi::rule<Iterator, storm::logic::OperatorInformation(), qi::locals<boost::optional<storm::OptimizationDirection>, boost::optional<storm::logic::ComparisonType>, boost::optional<storm::expressions::Expression>>, Skipper> operatorInformation;
qi::rule<Iterator, storm::logic::RewardMeasureType(), Skipper> rewardMeasureType;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(), Skipper> probabilityOperator;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(), Skipper> rewardOperator;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(), Skipper> timeOperator;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(), Skipper> longRunAverageOperator;
qi::rule<Iterator, storm::logic::PlayerCoalition(), qi::locals<std::vector<boost::variant<std::string, storm::storage::PlayerIndex>>>, Skipper> playerCoalition;
qi::rule<Iterator, storm::jani::Property(), Skipper> filterProperty;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(), Skipper> simpleFormula;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(storm::logic::FormulaContext), Skipper> stateFormula;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(storm::logic::FormulaContext), Skipper> pathFormula;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(storm::logic::FormulaContext), Skipper> pathFormulaWithoutUntil;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(), Skipper> simplePathFormula;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(storm::logic::FormulaContext), Skipper> atomicStateFormula;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(storm::logic::FormulaContext), Skipper> atomicStateFormulaWithoutExpression;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(), Skipper> operatorFormula;
qi::rule<Iterator, std::string(), Skipper> label;
qi::rule<Iterator, std::string(), Skipper> rewardModelName;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(storm::logic::FormulaContext), Skipper> andStateFormula;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(storm::logic::FormulaContext), Skipper> orStateFormula;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(storm::logic::FormulaContext), Skipper> notStateFormula;
qi::rule<Iterator, std::string(), Skipper> quotedString;
// PCTL-like Operator Formulas
qi::rule<Iterator, storm::logic::OperatorInformation(), qi::locals<boost::optional<storm::OptimizationDirection>>, Skipper> operatorInformation;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(storm::logic::FormulaContext), Skipper> operatorSubFormula;
qi::rule<Iterator, std::string(storm::logic::FormulaContext), Skipper> rewardModelName;
qi::rule<Iterator, storm::logic::RewardMeasureType(storm::logic::FormulaContext), Skipper> rewardMeasureType;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(), qi::locals<storm::logic::FormulaContext>, Skipper> operatorFormula;
// Atomic propositions
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(), Skipper> labelFormula;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(), Skipper> expressionFormula;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(), qi::locals<bool>, Skipper> booleanLiteralFormula;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(storm::logic::FormulaContext), Skipper> conditionalFormula;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(), Skipper> atomicPropositionFormula;
// Propositional logic operators
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(FormulaKind, storm::logic::FormulaContext), Skipper> basicPropositionalFormula;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(FormulaKind, storm::logic::FormulaContext), Skipper> negationPropositionalFormula;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(FormulaKind, storm::logic::FormulaContext), Skipper> andLevelPropositionalFormula;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(FormulaKind, storm::logic::FormulaContext), Skipper> orLevelPropositionalFormula;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(FormulaKind, storm::logic::FormulaContext), Skipper> propositionalFormula;
// Path operators
qi::rule<Iterator, std::shared_ptr<storm::logic::TimeBoundReference>, Skipper> timeBoundReference;
qi::rule<Iterator, std::tuple<boost::optional<storm::logic::TimeBound>, boost::optional<storm::logic::TimeBound>, std::shared_ptr<storm::logic::TimeBoundReference>>(), qi::locals<bool, bool>, Skipper> timeBound;
qi::rule<Iterator, std::vector<std::tuple<boost::optional<storm::logic::TimeBound>, boost::optional<storm::logic::TimeBound>, std::shared_ptr<storm::logic::TimeBoundReference>>>(), qi::locals<bool, bool>, Skipper> timeBounds;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(storm::logic::FormulaContext), Skipper> eventuallyFormula;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(storm::logic::FormulaContext), Skipper> nextFormula;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(storm::logic::FormulaContext), Skipper> globallyFormula;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(storm::logic::FormulaContext), Skipper> untilFormula;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(storm::logic::FormulaContext), Skipper> basicPathFormula;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(storm::logic::FormulaContext), Skipper> hoaPathFormula;
void addHoaAPMapping(storm::logic::Formula const& hoaFormula, const std::string& ap, std::shared_ptr<storm::logic::Formula const>& expression) const;
qi::rule<Iterator, std::shared_ptr<storm::logic::TimeBoundReference>, Skipper> timeBoundReference;
qi::rule<Iterator, std::tuple<boost::optional<storm::logic::TimeBound>, boost::optional<storm::logic::TimeBound>, std::shared_ptr<storm::logic::TimeBoundReference>>(), qi::locals<bool, bool>, Skipper> timeBound;
qi::rule<Iterator, std::vector<std::tuple<boost::optional<storm::logic::TimeBound>, boost::optional<storm::logic::TimeBound>, std::shared_ptr<storm::logic::TimeBoundReference>>>(), qi::locals<bool, bool>, Skipper> timeBounds;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(), Skipper> rewardPathFormula;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(), qi::locals<bool>, Skipper> cumulativeRewardFormula;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(), Skipper> totalRewardFormula;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(), Skipper> instantaneousRewardFormula;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(storm::logic::FormulaContext), Skipper> multiBoundedPathFormulaOperand;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(storm::logic::FormulaContext), Skipper> multiBoundedPathFormula;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(storm::logic::FormulaContext), Skipper> prefixOperatorPathFormula;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(storm::logic::FormulaContext), Skipper> basicPathFormula;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(storm::logic::FormulaContext), Skipper> untilLevelPathFormula;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(storm::logic::FormulaContext), Skipper> pathFormula;
// Quantitative path operators (reward)
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(), Skipper> longRunAverageRewardFormula;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(), Skipper> instantaneousRewardFormula;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(), Skipper> cumulativeRewardFormula;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(), Skipper> totalRewardFormula;
// Game Formulae
qi::rule<Iterator, storm::logic::PlayerCoalition(), qi::locals<std::vector<boost::variant<std::string, storm::storage::PlayerIndex>>>, Skipper> playerCoalition;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(), Skipper> gameFormula;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(), Skipper> multiFormula;
qi::rule<Iterator, storm::expressions::Variable(), qi::locals<boost::optional<storm::solver::OptimizationDirection>>, Skipper> quantileBoundVariable;
// Multi-objective, quantiles
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(), Skipper> multiOperatorFormula;
qi::rule<Iterator, storm::expressions::Variable(), Skipper> quantileBoundVariable;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(), Skipper> quantileFormula;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(), Skipper> gameFormula;
// General formulae
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(FormulaKind, storm::logic::FormulaContext), Skipper> formula;
qi::rule<Iterator, std::shared_ptr<storm::logic::Formula const>(), Skipper> topLevelFormula;
qi::rule<Iterator, std::shared_ptr<storm::logic::ShieldExpression const>(), Skipper> shieldExpression;
qi::rule<Iterator, storm::logic::ShieldingType, Skipper> shieldingType;
qi::rule<Iterator, double, Skipper> probability;
qi::rule<Iterator, std::pair<storm::logic::ShieldComparison, double>, qi::locals<storm::logic::ShieldComparison>, Skipper> shieldComparison;
// Properties
qi::rule<Iterator, std::string(), Skipper> formulaName;
qi::rule<Iterator, storm::jani::Property(), Skipper> filterProperty;
// Constant declarations
enum class ConstantDataType {
Bool, Integer, Rational
};
qi::rule<Iterator, qi::unused_type(), qi::locals<ConstantDataType>, Skipper> constantDefinition;
// Parser that is used to recognize doubles only (as opposed to Spirit's double_ parser).
boost::spirit::qi::real_parser<double, boost::spirit::qi::strict_real_policies<double>> strict_double;
// Start symbol
qi::rule<Iterator, std::vector<storm::jani::Property>(), Skipper> start;
void addHoaAPMapping(storm::logic::Formula const& hoaFormula, const std::string& ap, std::shared_ptr<storm::logic::Formula const>& expression) const;
storm::logic::PlayerCoalition createPlayerCoalition(std::vector<boost::variant<std::string, storm::storage::PlayerIndex>> const& playerIds) const;
std::shared_ptr<storm::logic::Formula const> createGameFormula(storm::logic::PlayerCoalition const& coalition, std::shared_ptr<storm::logic::Formula const> const& subformula) const;
@ -243,8 +267,9 @@ namespace storm {
std::shared_ptr<storm::logic::Formula const> createNextFormula(std::shared_ptr<storm::logic::Formula const> const& subformula) const;
std::shared_ptr<storm::logic::Formula const> createUntilFormula(std::shared_ptr<storm::logic::Formula const> const& leftSubformula, boost::optional<std::vector<std::tuple<boost::optional<storm::logic::TimeBound>, boost::optional<storm::logic::TimeBound>, std::shared_ptr<storm::logic::TimeBoundReference>>>> const& timeBounds, std::shared_ptr<storm::logic::Formula const> const& rightSubformula);
std::shared_ptr<storm::logic::Formula const> createHOAPathFormula(const std::string& automataFile) const;
std::shared_ptr<storm::logic::Formula const> createConditionalFormula(std::shared_ptr<storm::logic::Formula const> const& leftSubformula, std::shared_ptr<storm::logic::Formula const> const& rightSubformula, storm::logic::FormulaContext context) const;
std::shared_ptr<storm::logic::Formula const> createConditionalFormula(std::shared_ptr<storm::logic::Formula const> const& leftSubformula, boost::optional<std::shared_ptr<storm::logic::Formula const>> const& rightSubformula, storm::logic::FormulaContext context) const;
storm::logic::OperatorInformation createOperatorInformation(boost::optional<storm::OptimizationDirection> const& optimizationDirection, boost::optional<storm::logic::ComparisonType> const& comparisonType, boost::optional<storm::expressions::Expression> const& threshold) const;
std::shared_ptr<storm::logic::Formula const> createOperatorFormula(storm::logic::FormulaContext const& context, boost::optional<storm::logic::RewardMeasureType> const& rewardMeasureType, boost::optional<std::string> const& rewardModelName, storm::logic::OperatorInformation const& operatorInformation, std::shared_ptr<storm::logic::Formula const> const& subformula);
std::shared_ptr<storm::logic::Formula const> createLongRunAverageOperatorFormula(storm::logic::OperatorInformation const& operatorInformation, std::shared_ptr<storm::logic::Formula const> const& subformula) const;
std::shared_ptr<storm::logic::Formula const> createRewardOperatorFormula(boost::optional<storm::logic::RewardMeasureType> const& rewardMeasureType, boost::optional<std::string> const& rewardModelName, storm::logic::OperatorInformation const& operatorInformation, std::shared_ptr<storm::logic::Formula const> const& subformula) const;
std::shared_ptr<storm::logic::Formula const> createTimeOperatorFormula(boost::optional<storm::logic::RewardMeasureType> const& rewardMeasureType, storm::logic::OperatorInformation const& operatorInformation, std::shared_ptr<storm::logic::Formula const> const& subformula) const;
@ -255,15 +280,19 @@ namespace storm {
std::shared_ptr<storm::logic::Formula const> createUnaryBooleanStateFormula(std::shared_ptr<storm::logic::Formula const> const& subformula, boost::optional<storm::logic::UnaryBooleanStateFormula::OperatorType> const& operatorType);
std::shared_ptr<storm::logic::Formula const> createUnaryBooleanPathFormula(std::shared_ptr<storm::logic::Formula const> const& subformula, boost::optional<storm::logic::UnaryBooleanPathFormula::OperatorType> const& operatorType);
std::shared_ptr<storm::logic::Formula const> createUnaryBooleanStateOrPathFormula(std::shared_ptr<storm::logic::Formula const> const& subformula, boost::optional<storm::logic::UnaryBooleanOperatorType> const& operatorType);
std::shared_ptr<storm::logic::Formula const> createMultiFormula(std::vector<std::shared_ptr<storm::logic::Formula const>> const& subformulas);
bool isValidMultiBoundedPathFormulaOperand(std::shared_ptr<storm::logic::Formula const> const& operand);
std::shared_ptr<storm::logic::Formula const> createMultiBoundedPathFormula(std::vector<std::shared_ptr<storm::logic::Formula const>> const& subformulas);
std::shared_ptr<storm::logic::Formula const> createMultiOperatorFormula(std::vector<std::shared_ptr<storm::logic::Formula const>> const& subformulas);
storm::expressions::Variable createQuantileBoundVariables(boost::optional<storm::solver::OptimizationDirection> const& dir, std::string const& variableName);
std::shared_ptr<storm::logic::Formula const> createQuantileFormula(std::vector<storm::expressions::Variable> const& boundVariables, std::shared_ptr<storm::logic::Formula const> const& subformula);
std::set<storm::expressions::Variable> getUndefinedConstants(std::shared_ptr<storm::logic::Formula const> const& formula) const;
storm::jani::Property createProperty(boost::optional<std::string> const& propertyName, storm::modelchecker::FilterType const& filterType, std::shared_ptr<storm::logic::Formula const> const& formula, std::shared_ptr<storm::logic::Formula const> const& states);
storm::jani::Property createPropertyWithDefaultFilterTypeAndStates(boost::optional<std::string> const& propertyName, std::shared_ptr<storm::logic::Formula const> const& formula);
storm::jani::Property createShieldingProperty(boost::optional<std::string> const& propertyName, std::shared_ptr<storm::logic::Formula const> const& formula, std::shared_ptr<storm::logic::ShieldExpression const> const& shieldingExpression);
bool isBooleanReturnType(std::shared_ptr<storm::logic::Formula const> const& formula, bool raiseErrorMessage = false);
bool raiseAmbiguousNonAssociativeOperatorError(std::shared_ptr<storm::logic::Formula const> const& formula, std::string const& op);
// An error handler function.
phoenix::function<SpiritErrorHandler> handler;

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