public SatisfiabilityObligation(
AImplicitFunctionDefinition func, IPOContextStack ctxt, IPogAssistantFactory af)
throws AnalysisException {
super(func, POType.FUNC_SATISFIABILITY, ctxt, func.getLocation(), af);
/** f: A * B -> R [pre ...] post ... [pre_f(a, b) =>] exists r:R & post_f(a, b, r) */
List<PExp> arglist = new Vector<PExp>();
for (APatternListTypePair pltp : func.getParamPatterns()) {
for (PPattern pattern : pltp.getPatterns()) {
arglist.add(patternToExp(pattern));
}
}
AApplyExp preApply = null;
if (func.getPredef() != null) {
preApply =
getApplyExp(
getVarExp(func.getPredef().getName().clone(), func.getPredef().clone()), arglist);
preApply.setType(new ABooleanBasicType());
preApply.getRoot().setType(func.getPredef().getType().clone());
}
AExistsExp existsExp = new AExistsExp();
existsExp.setType(new ABooleanBasicType());
List<PExp> postArglist = new Vector<PExp>(arglist);
if (func.getResult().getPattern() instanceof AIdentifierPattern) {
AIdentifierPattern ip = (AIdentifierPattern) func.getResult().getPattern().clone();
postArglist.add(patternToExp(func.getResult().getPattern()));
existsExp.setBindList(
getMultipleTypeBindList(func.getResult().getType().clone(), ip.getName()));
} else {
throw new RuntimeException("Expecting identifier pattern in function result");
}
AApplyExp postApply =
getApplyExp(getVarExp(func.getPostdef().getName(), func.getPostdef()), postArglist);
postApply.setType(new ABooleanBasicType());
postApply.getRoot().setType(func.getPostdef().getType().clone());
existsExp.setPredicate(postApply);
if (preApply != null) {
AImpliesBooleanBinaryExp implies =
AstExpressionFactory.newAImpliesBooleanBinaryExp(preApply, existsExp);
stitch = implies;
valuetree.setPredicate(ctxt.getPredWithContext(implies));
} else {
stitch = existsExp;
valuetree.setPredicate(ctxt.getPredWithContext(existsExp));
}
// valuetree.setContext(ctxt.getContextNodeList());
}
@Override
public PExp caseAIdentifierPattern(AIdentifierPattern pattern) throws AnalysisException {
return AstFactory.newAVariableExp(pattern.getName().clone());
}
PExp buildPredicate(AImplicitOperationDefinition op, PDefinition stateDefinition)
throws AnalysisException {
List<PExp> arglist = new Vector<PExp>();
for (APatternListTypePair pltp : op.getParameterPatterns()) {
for (PPattern pattern : pltp.getPatterns()) {
arglist.add(patternToExp(pattern.clone()));
}
}
if (stateDefinition != null) {
stateInPre(arglist, stateDefinition);
}
AApplyExp preApply = null;
if (op.getPredef() != null) {
preApply = getApplyExp(getVarExp(op.getPredef().getName().clone(), op.getPredef()), arglist);
preApply.getRoot().setType(op.getPredef().getType().clone());
preApply.setType(new ABooleanBasicType());
}
PExp mainExp;
// Operation Has a Result. Add it in the post condition.
if (op.getResult() != null) {
AExistsExp existsExp = new AExistsExp();
existsExp.setType(new ABooleanBasicType());
List<PExp> postArglist = new Vector<PExp>(arglist);
if (op.getResult().getPattern() instanceof AIdentifierPattern) {
AIdentifierPattern ip = (AIdentifierPattern) op.getResult().getPattern();
postArglist.add(patternToExp(op.getResult().getPattern().clone()));
if (stateDefinition != null) {
if (stateDefinition instanceof AStateDefinition) {
AVariableExp varExp = getVarExp(OLD_STATE_ARG);
varExp.setType(((AStateDefinition) stateDefinition).getRecordType().clone());
postArglist.add(varExp);
AVariableExp varExp2 = getVarExp(NEW_STATE_ARG);
varExp2.setType(((AStateDefinition) stateDefinition).getRecordType().clone());
postArglist.add(varExp2);
} else {
AVariableExp varExp = getVarExp(OLD_SELF_ARG);
postArglist.add(varExp);
varExp.setType(stateDefinition.getType().clone());
AVariableExp varExp2 = getVarExp(NEW_SELF_ARG);
postArglist.add(varExp2);
varExp2.setType(stateDefinition.getType().clone());
}
}
existsExp.setBindList(
getMultipleTypeBindList(op.getResult().getType().clone(), ip.getName().clone()));
} else {
throw new RuntimeException("Expecting single identifier pattern in operation result");
}
AApplyExp postApply = getApplyExp(getVarExp(op.getPostdef().getName()), postArglist);
postApply.getRoot().setType(op.getPostdef().getType().clone());
postApply.setType(new ABooleanBasicType());
existsExp.setPredicate(postApply);
mainExp = existsExp;
}
// No Result. Just add new state to post condition
else {
AExistsExp exists_exp = new AExistsExp();
exists_exp.setType(new ABooleanBasicType());
List<PExp> postArglist = new Vector<PExp>(arglist);
List<PMultipleBind> exists_binds = new LinkedList<PMultipleBind>();
if (stateDefinition != null) {
stateInPost(exists_binds, postArglist, stateDefinition);
}
exists_exp.setBindList(exists_binds);
AApplyExp postApply =
getApplyExp(getVarExp(op.getPostdef().getName()), new Vector<PExp>(postArglist));
postApply.setType(new ABooleanBasicType());
postApply.getRoot().setType(op.getPostdef().getType().clone());
exists_exp.setPredicate(postApply);
mainExp = exists_exp;
}
if (preApply != null) {
return AstExpressionFactory.newAImpliesBooleanBinaryExp(preApply, mainExp);
} else {
return mainExp;
}
}