private static bool ValidateAffectsAsterisk(string param1, string param2)
{
StmtRef stmtRef1 = new StmtRef(param1);
StmtRef stmtRef2 = new StmtRef(param2);
return(stmtRef1.IsGrammarCorrect() && stmtRef2.IsGrammarCorrect());
}
private static bool ValidateUses(string param1, string param2)
{
VarRef varRef = new VarRef(param2);
if (varRef.IsGrammarCorrect())
{
ProcRef procRef = new ProcRef(param1);
StmtRef stmtRef = new StmtRef(param1);
return(procRef.IsGrammarCorrect() || stmtRef.IsGrammarCorrect());
}
return(false);
}
public MethodResultList DoSuchThatMethod(string methodName, string param1, string param2)
{
switch (methodName)
{
case "MODIFIES":
{
//helper objects needed to check the type, param1 can be either PROCEDURE or STATEMENT
VarRef varRef = new VarRef(param2);
varRef.IsGrammarCorrect();
ProcRef procRef = new ProcRef(param1);
procRef.IsGrammarCorrect();
StmtRef stmtRef = new StmtRef(param1);
stmtRef.IsGrammarCorrect();
//present on DeclarationsArray and has required type
if (!IsTypeCorrect(varRef))
{
throw new SuchThatException($"#{varRef.entry} isn't declared as VARIABLE type");
}
if (IsTypeCorrect(procRef))
{
return(Modifies(procRef, varRef));
}
else
if (IsTypeCorrect(stmtRef))
{
return(Modifies(stmtRef, varRef));
}
else
{
throw new SuchThatException($"#{methodName} first param is neither 'PROCEDURE' or 'STATEMENT'");
}
}
case "USES":
{
//helper objects needed to check the type, param1 can be either PROCEDURE or STATEMENT
VarRef varRef = new VarRef(param2);
varRef.IsGrammarCorrect();
ProcRef procRef = new ProcRef(param1);
procRef.IsGrammarCorrect();
StmtRef stmtRef = new StmtRef(param1);
stmtRef.IsGrammarCorrect();
//present on DeclarationsArray and has required type
if (!IsTypeCorrect(varRef))
{
throw new SuchThatException($"#{varRef.entry} isn't declared as VARIABLE type");
}
bool stmtFlag = IsTypeCorrect(stmtRef);
bool procFlag = IsTypeCorrect(procRef);
if (procFlag)
{
return(Uses(procRef, varRef));
}
else
if (stmtFlag)
{
return(Uses(stmtRef, varRef));
}
else
{
throw new SuchThatException($"#{methodName} first param is neither 'PROCEDURE' or 'STATEMENT'");
}
}
case "CALLS":
{
ProcRef procRef1 = new ProcRef(param1);
procRef1.IsGrammarCorrect();
ProcRef procRef2 = new ProcRef(param2);
procRef2.IsGrammarCorrect();
if (IsTypeCorrect(procRef1) && IsTypeCorrect(procRef2))
{
return(Calls(procRef1, procRef2));
}
else
{
throw new SuchThatException($"#{methodName} first or second param isn't 'PROCEDURE'");
}
}
//case "CALLS*":
// {
// ProcRef procRef1 = new ProcRef(param1);
// procRef1.IsGrammarCorrect();
// ProcRef procRef2 = new ProcRef(param2);
// procRef2.IsGrammarCorrect();
// if (IsTypeCorrect(procRef1) && IsTypeCorrect(procRef2))
// return CallsAsterisk(procRef1, procRef2);
// else
// throw new SuchThatException($"#{methodName} first or second param isn't 'PROCEDURE'");
// }
case "PARENT":
{
StmtRef stmtRef1 = new StmtRef(param1);
stmtRef1.IsGrammarCorrect();
StmtRef stmtRef2 = new StmtRef(param2);
stmtRef2.IsGrammarCorrect();
if (IsTypeCorrect(stmtRef1) && IsTypeCorrect(stmtRef2))
{
return(Parent(stmtRef1, stmtRef2));
}
else
{
throw new SuchThatException($"#{methodName} first or second param isn't 'STATEMENT'");
}
}
case "PARENT*":
{
StmtRef stmtRef1 = new StmtRef(param1);
stmtRef1.IsGrammarCorrect();
StmtRef stmtRef2 = new StmtRef(param2);
stmtRef2.IsGrammarCorrect();
if (IsTypeCorrect(stmtRef1) && IsTypeCorrect(stmtRef2))
{
return(ParentAsterisk(stmtRef1, stmtRef2));
}
else
{
throw new SuchThatException($"#{methodName} first or second param isn't 'STATEMENT'");
}
}
case "FOLLOWS":
{
StmtRef stmtRef1 = new StmtRef(param1);
stmtRef1.IsGrammarCorrect();
StmtRef stmtRef2 = new StmtRef(param2);
stmtRef2.IsGrammarCorrect();
if (IsTypeCorrect(stmtRef1) && IsTypeCorrect(stmtRef2))
{
return(Follows(stmtRef1, stmtRef2));
}
else
{
throw new SuchThatException($"#{methodName} first or second param isn't 'STATEMENT'");
}
}
case "FOLLOWS*":
{
StmtRef stmtRef1 = new StmtRef(param1);
stmtRef1.IsGrammarCorrect();
StmtRef stmtRef2 = new StmtRef(param2);
stmtRef2.IsGrammarCorrect();
if (IsTypeCorrect(stmtRef1) && IsTypeCorrect(stmtRef2))
{
return(FollowsAsterisk(stmtRef1, stmtRef2));
}
else
{
throw new SuchThatException($"#{methodName} first or second param isn't 'STATEMENT'");
}
}
case "NEXT":
return(NotImplemented());
case "NEXT*":
return(NotImplemented());
case "AFFECTS":
return(NotImplemented());
case "AFFECTS*":
return(NotImplemented());
default:
throw new NotImplementedException($"#Invalid methodName for Such That. Got: {methodName}");
}
}