public static Fragment ParameterFragmentIntersection(MethodCall methodCall, ISymbolTable context)
{
Fragment current = context.InferFragmentType (methodCall.Operands[0]);
Fragment intersection = current;
for (int i = 1; i < methodCall.Operands.Count; i++)
{
Fragment next = context.InferFragmentType (methodCall.Operands[i]);
intersection = FragmentIntersection (current, next);
}
return intersection;
}
public static Fragment ParameterFragmentIntersection(MethodCall methodCall, ISymbolTable context)
{
Fragment current = context.InferFragmentType(methodCall.Operands[0]);
Fragment intersection = current;
for (int i = 1; i < methodCall.Operands.Count; i++)
{
Fragment next = context.InferFragmentType(methodCall.Operands[i]);
intersection = FragmentIntersection(current, next);
}
return(intersection);
}
private void CheckParameter(Expression operand, Fragment expectedFragment)
{
Fragment operandFragmentType = _symbolTable.InferFragmentType(operand);
if (!FragmentUtility.FragmentTypesAssignable(operandFragmentType, expectedFragment))
{
ProblemMetadata problemMetadata = new ProblemMetadata(operand.UniqueKey, operand.SourceContext, expectedFragment, operandFragmentType);
PassProblem(operand, problemMetadata);
}
}
private Fragment FirstOperandsFragmentType(AssignmentStatement assignment, HandleContext context)
{
Fragment fragmentType = Fragment.CreateEmpty();
Expression firstOperand = FirstOperand(assignment.Source);
if (firstOperand != null)
{
ISymbolTable symbolTable = context.SymbolTable;
fragmentType = symbolTable.InferFragmentType(firstOperand);
}
return(fragmentType);
}
private void CheckAssignment(AssignmentStatement assignmentStatement, string targetName, HandleContext context)
{
ISymbolTable symbolTable = context.SymbolTable;
Fragment targetFragmentType = symbolTable.GetFragmentType(targetName);
Fragment sourceFragmentType = symbolTable.InferFragmentType(assignmentStatement.Source);
if (targetFragmentType != sourceFragmentType)
{
symbolTable.MakeUnsafe(targetName);
}
else
{
SetPreConditionForIndexerObject(assignmentStatement, targetName, sourceFragmentType, context);
}
}
private void InferArrayFragment(AssignmentStatement assignmentStatement, string targetName, HandleContext context)
{
ISymbolTable symbolTable = context.SymbolTable;
Fragment targetFragmentType = symbolTable.InferFragmentType(assignmentStatement.Source);
if (context.ArrayFragmentTypeDefined[targetName] == false)
{
symbolTable.MakeSafe(targetName, targetFragmentType);
context.ArrayFragmentTypeDefined[targetName] = true;
}
else if (symbolTable.GetFragmentType(targetName) == Fragment.CreateLiteral())
{
symbolTable.MakeSafe(targetName, targetFragmentType);
}
else if (symbolTable.GetFragmentType(targetName) != targetFragmentType && targetFragmentType != Fragment.CreateLiteral())
{
symbolTable.MakeUnsafe(targetName);
}
}