Filled in a lot of code

Assignment 1 (C++)/Assignment 1 (C++).cpp

@@ -4,6 +4,7 @@
 #include <iostream>
 #include <stdio.h>
 #include <vector>
+#include <string>
 
 int main()
 {
@@ -14,15 +15,59 @@ int main()
 
     bool exit = false;
     while (!exit) {
-        std::vector<char> MemoryChars(1024); // Pre-reserve
+        MemoryStream ms(1024);
+        
 
     }
 }
+bool IsWhiteSpace(char c) {
+    if (c == ' ' || c == '\r' || c == '\n') {
+        return true;
+    }
+    return false;
+}
+
+void skipWhitespace(MemoryStream ms) {
+    char c = ms.PeekChar();
+    while (ms.position < ms.length && IsWhiteSpace(c)) {
+        ms.ReadChar();
+        c = ms.PeekChar();
+    }
+}
+
+std::string FindNextWord(MemoryStream ms, long &position) {
+    std::string nextWord;
+    long start = ms.position;
+    char curr = ms.ReadChar();
+    while (ms.position < ms.length && IsWhiteSpace(curr))
+    {
+        curr = ms.ReadChar();
+    }
+    nextWord.push_back(curr);
+    while (ms.position < ms.length)
+    {
+        curr = ms.ReadChar();
+        if (IsWhiteSpace(curr) || curr == ';')
+        {
+            ms.position--;
+            break;
+        }
+        else
+        {
+            nextWord.push_back(curr);
+        }
+    }
+    position = ms.position;
+    ms.position = start;
+    return nextWord;
+}
 
 struct MemoryStream {
-private:
+public:
     long position = 0;
     long length = 0;
+private:
+    
     std::vector<char> chars;
 
     bool ensureCapacity(long step) {
@@ -54,7 +99,7 @@ public:
         chars[++position] = c;
     }
 
-    bool writeChars(char* c, int count) {
+    bool writeChars(const char* c, int count) {
         ensureCapacity(count);
         if (position >= length - count) length = position + count;
         for (int i = 0; i < count; i++)
@@ -64,13 +109,63 @@ public:
     }
 };
 
-// Run program: Ctrl + F5 or Debug > Start Without Debugging menu
-// Debug program: F5 or Debug > Start Debugging menu
+struct Parser {
+    std::vector<std::string> symbolNames;
+    std::vector<std::string> symbolValues;
 
-// Tips for Getting Started: 
-//   1. Use the Solution Explorer window to add/manage files
-//   2. Use the Team Explorer window to connect to source control
-//   3. Use the Output window to see build output and other messages
-//   4. Use the Error List window to view errors
-//   5. Go to Project > Add New Item to create new code files, or Project > Add Existing Item to add existing code files to the project
-//   6. In the future, to open this project again, go to File > Open > Project and select the .sln file
+    void Exit() {
+        std::exit(0);
+    }
+
+    void StartParsing(MemoryStream ms, bool dynamicInput = false) {
+        long startLength = ms.length;
+        long lastLinePos = 0;
+        long initPos = 0;
+        bool cont = false;
+        while (true) {
+            if (dynamicInput) {
+                lastLinePos = ms.position;
+                if (!cont)
+                {
+                    std::cout << "Enter a command: " << std::endl;
+                }
+                std::string s;
+                std::getline(std::cin, s);
+                long pos = ms.position;
+                ms.writeChars(s.c_str(), s.size());
+                ms.position = pos;
+            }
+            if (!cont) {
+                initPos = ms.position;
+            }
+            else {
+                ms.position = initPos;
+            }
+            skipWhitespace(ms);
+            long position = 0;
+            std::string word = FindNextWord(ms, position);
+            try {
+                if (word._Equal("set")) {
+
+                }
+                else if (word._Equal("exit")) {
+
+                }
+                else if (word._Equal("append")) {
+
+                }
+                else if (word._Equal("list")) {
+
+                }
+                else if (word._Equal("print")) {
+
+                }
+            }
+            catch (std::exception e)
+            {
+
+            }
+        }
+    }
+
+};

Assignment 1/Program.cs

@@ -37,10 +37,10 @@ namespace Assignment_1
 
         static void Main(string[] args)
         {
-            Console.WriteLine("┌──────────────────────────────────────────┐");
-            Console.WriteLine("│  159.341 2021 Semester 1, Assignment 1   │");
-            Console.WriteLine("│  Submitted by Brychan Dempsey, 14299890  │");
-            Console.WriteLine("└──────────────────────────────────────────┘");
+            Console.WriteLine("┌──────────────────────────────────────────────┐");
+            Console.WriteLine("│  159.341 2021 Semester 1, Assignment 1 (C#)  │");
+            Console.WriteLine("│    Submitted by Brychan Dempsey, 14299890    │");
+            Console.WriteLine("└──────────────────────────────────────────────┘");
             // Parse the source from the memory stream
             bool exit = false;
             while (!exit)
@@ -185,6 +185,8 @@ namespace Assignment_1
                         {
                             // By turning the result of the command into an action,
                             // we can defer processing the final result until the end of this control flow
+                            // This simplifies parsing the eol, and prevents the result being processed too
+                            // optimistically.
                             Action result = () => { };
                             source.Position = position;
                             switch ((Statements)statementType)
@@ -428,7 +430,7 @@ namespace Assignment_1
             }
             Action Exit(Stream source, long initialStreamLength, bool isDynamicInput=false)
             {
-                Action exitAction = () =>
+                void exitAction()
                 {
                     if (source.Length != initialStreamLength && isDynamicInput)
                     {
@@ -457,7 +459,7 @@ namespace Assignment_1
                             }
                         }
                     }
-                };
+                }
                 return exitAction;
             }
             Action Print(Stream source, int mode = 0)