From d3ad6ff0e99b180113eb126f58a9a29303c8f82b Mon Sep 17 00:00:00 2001
From: jimtahu <jimtahu@gmail.com>
Date: Fri, 26 Apr 2013 22:31:46 -0500
Subject: [PATCH 1/2] Adding handeling for variables

---
 AssingmentStatement.cpp |  5 +++++
 AssingmentStatement.h   |  1 +
 Identifier.cpp          |  5 +++++
 Identifier.h            |  2 +-
 Program.cpp             |  2 +-
 Variable.cpp            | 31 +++++++++++++++++++++++++++++++
 Variable.h              |  3 +++
 7 files changed, 47 insertions(+), 2 deletions(-)

diff --git a/AssingmentStatement.cpp b/AssingmentStatement.cpp
index 363eccc..b596d4d 100644
--- a/AssingmentStatement.cpp
+++ b/AssingmentStatement.cpp
@@ -6,6 +6,7 @@
  */
 
 #include "AssingmentStatement.h"
+#include "Variable.h"
 
 namespace ParseTree {
 
@@ -14,6 +15,10 @@ AssingmentStatement::AssingmentStatement(Identifier *id, Value *value) {
 	this->value=value;
 }
 
+void AssingmentStatement::Execute(){
+	setScalar(this->id->getName(),this->value->getValue());
+}
+
 AssingmentStatement::~AssingmentStatement() {
 	// TODO Auto-generated destructor stub
 }
diff --git a/AssingmentStatement.h b/AssingmentStatement.h
index 84229e8..3523810 100644
--- a/AssingmentStatement.h
+++ b/AssingmentStatement.h
@@ -19,6 +19,7 @@ class AssingmentStatement: public ParseTree::Statement {
 	Value *value;
 public:
 	AssingmentStatement(Identifier *id, Value *value);
+	void Execute();
 	virtual ~AssingmentStatement();
 };
 
diff --git a/Identifier.cpp b/Identifier.cpp
index 3c3a8bb..c5aa3a5 100644
--- a/Identifier.cpp
+++ b/Identifier.cpp
@@ -6,6 +6,7 @@
  */
 
 #include "Identifier.h"
+#include "Variable.h"
 
 namespace ParseTree {
 
@@ -19,6 +20,10 @@ string Identifier::getName(){
 	return this->Name;
 }
 
+string Identifier::getValue(){
+	return getScalar(this->Name);
+}
+
 Identifier::~Identifier() {
 	// TODO Auto-generated destructor stub
 }
diff --git a/Identifier.h b/Identifier.h
index aa13094..3f6304f 100644
--- a/Identifier.h
+++ b/Identifier.h
@@ -18,7 +18,7 @@ class Identifier: public ParseTree::Value {
 public:
 	Identifier(std::string name);
 	std::string getName();
-	void setValue(std::string value);
+	std::string getValue();
 	virtual ~Identifier();
 };
 
diff --git a/Program.cpp b/Program.cpp
index f52026c..876a831 100644
--- a/Program.cpp
+++ b/Program.cpp
@@ -14,7 +14,7 @@ Program::Program() {
 }
 
 void Program::add(Statement *stmt){
-	this->code.push_back(stmt);
+	code.insert(code.begin(),stmt);
 }
 
 void Program::run(){
diff --git a/Variable.cpp b/Variable.cpp
index 1f6cf8f..2eda14a 100644
--- a/Variable.cpp
+++ b/Variable.cpp
@@ -5,7 +5,38 @@
  *      Author: jimtahu
  */
 
+#include <map>
+
 #include "Variable.h"
+#include "ScalarVariable.h"
+
+using namespace std;
+
+map<string, ScalarVariable*> varTable;
+
+/**
+* Places a varable into the table.
+* @param name The lable for the varable.
+* @param value The value the varable now holds.
+* @return value, for convienace.
+*/
+string setScalar(string name, string value){
+	if(varTable.count(name)==0)varTable[name]=new ScalarVariable(name);
+	varTable[name]->SetValue(value);
+	return value;
+}//end setValue
+
+/**
+* Fetches the value for a varable.
+* @param name The lable of the varable to fetch.
+* @return the value.
+* Fetching a variable which has not been stored is undefined.
+*/
+string getScalar(string name){
+	if(varTable.count(name))
+		return varTable[name]->GetValue();
+	else return "EMPTY";
+}//end getValue
 
 Variable::Variable(string name){
 	this->Name=name;
diff --git a/Variable.h b/Variable.h
index 37564c6..66a31bf 100644
--- a/Variable.h
+++ b/Variable.h
@@ -12,6 +12,9 @@
 
 using namespace std;
 
+string setScalar(string name, string value);
+string getScalar(string name);
+
 class Variable {
 private:
 	string Name;

From 83aec26230a7ba54cc0e04a541c1ddc9d9bbde7b Mon Sep 17 00:00:00 2001
From: jimtahu <jimtahu@gmail.com>
Date: Sat, 27 Apr 2013 13:32:11 -0500
Subject: [PATCH 2/2] we now can assign and fetch variables

---
 PrintStatement.cpp | 8 ++++++++
 PrintStatement.h   | 1 +
 2 files changed, 9 insertions(+)

diff --git a/PrintStatement.cpp b/PrintStatement.cpp
index 542a7bf..6d8bb11 100644
--- a/PrintStatement.cpp
+++ b/PrintStatement.cpp
@@ -5,14 +5,22 @@
  *      Author: jimtahu
  */
 
+#include <iostream>
+
 #include "PrintStatement.h"
 
 namespace ParseTree {
 
+using namespace std;
+
 PrintStatement::PrintStatement(Value *output) {
 	this->value=output;
 }
 
+void PrintStatement::Execute(){
+	cout<<this->value->getValue()<<endl;
+}
+
 PrintStatement::~PrintStatement() {
 	// TODO Auto-generated destructor stub
 }
diff --git a/PrintStatement.h b/PrintStatement.h
index fc47e0e..ba1a877 100644
--- a/PrintStatement.h
+++ b/PrintStatement.h
@@ -18,6 +18,7 @@ class PrintStatement: public ParseTree::Statement {
 	Value *value;
 public:
 	PrintStatement(Value *output);
+	void Execute();
 	virtual ~PrintStatement();
 };