Update Parserv2.cpp

Parserv2.cpp

@@ -7,6 +7,9 @@
 
 using namespace std;
 
+/*
+	as of now, this parser can take a string and break it into tokens
+*/
 
 
 vector<string> tokenize(string ss)
@@ -107,11 +110,33 @@ vector<string> insertCMD(vector<string> input)
 	
 }
 
+vector<string> showCMD(vector<string> input)
+{
+	if (input.size() > 3)
+	{
+		cout<<"Syntax error!"<<endl;
+	}
+				
+	cout<<"\nPassing the following arguments to dbEngine: "<<endl;
+	cout<<"command :"<<input[0]<<endl;
+	cout<<"argument: "<<input[1]<<endl;	
+}
+
+vector<string> exitCMD(vector<string> input)
+{
+	if (input[1] != ";")
+	{
+		cout<<"ERROR: missing semicolon!"<<endl;
+	}
+	
+	if (input[0] != "EXIT") { cout<<"Wrong function/syntax error!"<<endl;}
+	cout<<"Passing command: "<<input[0]<<endl;
+}
 
 
 vector<string> createCMD(vector<string> input)
 {
-	//relation name will be the first element of the vector of data returned by this function
+	// //relation name will be the first element of the vector of data returned by this function
 	// vector<string> output;
 	
 	// output.push_back(input[0])	//pushing relation name
@@ -211,6 +236,12 @@ void par_line(vector<string> input)	//calls par_command() or par_query() dependi
 			}
 			
 			
+			if ( input[0] == "SHOW")
+			{
+				showCMD(input);			
+			}
+			
+			
 	}
 
 
@@ -253,10 +284,16 @@ int main () {
 
 	
 	string ss = "INSERT INTO animals VALUES FROM  ( Joe , cat , 4 ) ;";
-	string ss2 = "CREATE TABLE animals ( name VARCHAR(20) , kind VARCHAR(8) , years INTEGER ) PRIMARY KEY (name, kind);";
+	string ss2 = "SHOW Dogs ;";
+	string ss3 = "EXIT ; ";
 	
 	vector<string> listOfTokens = tokenize(ss);
+	//vector<string> listOfTokens2 = tokenize(ss2);
+	//vector<string> listOfTokens3 = tokenize(ss3);
+	
 	par_line(listOfTokens);
+	//par_line(listOfTokens2);
+	//par_line(listOfTokens3);
 	
 		
 }