Added structure for Regular Expressions, saving work as a backup because of software upgrade.

src/RegExState.cpp

@@ -0,0 +1,36 @@
+#include "RegExState.h"
+
+RegExState::RegExState(RegExState* inInnerState) {
+	inner = inInnerState;
+}
+
+RegExState::RegExState(char inCharacter) {
+	character = inCharacter;
+}
+
+RegExState::~RegExState() {
+	//No cleanup necessary
+}
+
+void RegExState::addNext(RegExState* nextState) {
+	nextStates.push_back(nextState);
+}
+
+bool RegExState::characterIs(char inCharacter) {
+	return character == inCharacter;
+}
+
+std::vector<RegExState*>* RegExState::advance(char advanceCharacter) {
+	std::vector<RegExState*>* advanceStates = new std::vector<RegExState*>();
+	for (std::vector<RegExState*>::size_type i = 0; i < nextStates.size(); i++) {
+		if (nextStates[i]->characterIs(advanceCharacter)) 
+			advanceStates->push_back(nextStates[i]);
+	}
+	return advanceStates;
+}
+
+bool RegExState::isGoal() {
+	return inner == NULL && nextStates.size() == 0;
+}
+
+