dmspine64backup/Parser.h

#include <string>       // std::string
#include <iostream>     // std::cout
#include <sstream>      // std::stringstream
#include <vector>
#include <string>
#include "DBEngine.h"

using namespace std;

class PRelation
{
	string name;
	
	public: 
		PRelation() { name = "~"; }
		PRelation(string str) { name = str; }
		void setPRelation(string str) { name = str; }	
		string getName() { return name; }
};

class PAttribute
{
	string name;
	string type;
	bool key;
	int size;
	
	public:
		PAttribute() {
			name = "~";
			type = "~";
			key = false;
			size = 0;
		}
		
		PAttribute(string str, string t) {
			name = str;
			type = t;
			key = false;
			size = 0;
		}
		
		PAttribute(string str, string t, int s) {
			name = str;
			type = t;
			key = false;
			size = s;
		}
		
		void setPAttributeName(string str) { name = str; }
		void setPAttributeType(string t) { type = t; }
		void setPAttributeKey() { key = true; }
		void setPAttributeSize(int s) { size = s; }
		string getPAttribute() { return name; }
		string getPAttributeType() { return type; }
		bool getPAttributeKey() { return key; }
		int getPAttributeSize() { return size; }
};

class PUnion
{
	string Un1;
	string Un2;
	
	public:
		PUnion() {
			Un1 = "~";
			Un2 = "~";
		}
		
		PUnion(string s1, string s2) {
			Un1 = s1;
			Un2 = s2;
		}
		
		string getPUnion() {
			return "Union of " + Un1 + " and " + Un2;
		}
};

class PProduct
{
	string Pr1;
	string Pr2;
	
	public:
		PProduct() {
			Pr1 = "~";
			Pr2 = "~";
		}
		
		PProduct(string s1, string s2) {
			Pr1 = s1;
			Pr2 = s2;
		}
		
		string getPProduct() {
			return "Product of " + Pr1 + " and " + Pr2;
		}
};

class PDifference
{
	string D1;
	string D2;
	
	public:
		PDifference() {
			D1 = "~";
			D2 = "~";
		}
		
		PDifference(string s1, string s2) {
			D1 = s1;
			D2 = s2;
		}
		
		string getPDifference() {
			return "Difference of " + D1 + " and " + D2;
		}
};

class PRenaming
{
	string newName;
	string oldName;
	
	public:
		PRenaming() {
			newName = "~";
			oldName = "~";
		}
		
		PRenaming(string s1, string s2) {
			newName = s1;
			oldName = s2;
		}
		
		string doRename() {
			return "Renaming " + oldName + " to " + newName;
		}
};

class PProjection
{
	string newName;
	string oldName;
	
	public:
		PProjection() {
			newName = "~";
			oldName = "~";
		}
		
		PProjection(string s1, string s2) {
			newName = s1;
			oldName = s2;
		}
		
		string doPProjection() {
			return "Projecting " + oldName + " onto " + newName;
		}
};

class POperand
{
	string op;
	
	public:
		POperand() { op = "~"; }
		POperand(string str) { op = str; }
		void setPOperand(string str) { op = str; }
		string getPOperand() { return op; }
};

class POp
{
	string op;
	
	public: 
		POp() { op = "~"; }
		POp(string str) { op = str; }
		void setPOp(string str) { op = str; }
		string getPOp() { return op; }
};

class PComparison
{
	POp op;
	POperand operand1;
	POperand operand2;
	
	public:
		PComparison() {
			op.setPOp("~");
			operand1.setPOperand("~");
			operand2.setPOperand("~");
		}
		
		PComparison(string str1, string str2, string str3) {
			operand1.setPOperand(str1);
			op.setPOp(str2);
			operand2.setPOperand(str3);
		}
		
		void setPComparison(string str1, string str2, string str3) {
			operand1.setPOperand(str1);
			op.setPOp(str2);
			operand2.setPOperand(str3);
		}
		
		string getPComparison() {
			return operand1.getPOperand() + " " + op.getPOp() + " " + operand2.getPOperand();
		}
};

class PConjunction
{
	string conj;
	public:
		PConjunction() { conj = "~"; }
		PConjunction(string str) { conj = str; }
		void setPConjunction(string str) { conj = str; }
		string getPConjunction() { return conj; }
};

class PCondition
{
	string cond;
	public:
	
		PCondition() { cond = "~"; }
		PCondition(string str) { cond = str; }
		void setPCondition(string str) { cond = str; }
		string getPCondition() { return cond; }
};

class PSelection
{
	string select;
	public:
		PSelection() { select = "~"; }
		PSelection(string str) { select = str; }
		string getPSelection() { return select; }
};

class PExpression
{
	PRelation rel;
	PSelection sel;
	PProjection proj;
	PRenaming ren;
	PUnion un;
	PDifference diff;
	PProduct prod;
	string temp;
	
	public:
	
		PExpression() { select = "~"; }
		PExpression(string str) { temp = str; }
		void setPExpression(string str) { temp = str; }
		string getPExpression() { return temp; }
};

void parse(string s, DBEngine &e);