My compiler is COMPLETELY messed up, any help?

Question

My compiler is COMPLETELY messed up, any help?

So I have made a simple compiler in C#. It works by this. (website link) And here is my source code:
NOTICE: I get no errors it just does, well, it does not compile.
using System;
using System.IO;
using System.Text;

class Class
{
    static void Main()
    {
        string path = @"c:\temp\SCRIPT.vis";

        char previous;
        string all = "";
        string cmd = "";
        string scpy;
        int mode = 0;
        string aug2 = "";

        Stream s = new FileStream(@"data.vis", FileMode.Open);
        int val = 0;
        char ch;

        while (true)
        {
            val = s.ReadByte();

            if (val < 0)
                break;
            ch = (char)val;
            Console.Write(ch);
            if (mode == 0)
            {
                if (ch != '(')
                {
                    all = ch.ToString();


                }
                else
                {
                    mode = 1;
                    all = "";

                }
            }
            if (mode == 1)
            {
                cmd = all;
                all = "";
                all = ch.ToString();
            }
            if (ch == ',')
            {
                mode = 2;
                all = "";
            }
            if (mode == 2)
            {
                aug2 = all;
                all = ch.ToString();
            }
            if (ch == ')')
            {
                if (cmd == "embed")
                {
                    File.Copy("C:/Visix/Embeds/" + all, all);
                }
                if (cmd == "copy")
                {
                    File.AppendAllText(@"main.vis", "File.Copy(" + all + ", " + aug2 + ");" + Environment.NewLine);
                }
                if (cmd == "using")
                {
                    File.AppendAllText(@"main.vis", "using " + all + Environment.NewLine);
                }
                if (cmd == "fileAppend")
                {
                    File.AppendAllText(@"main.vis", "File.AppendAllText(@" + all + ',' + aug2 + " + Environment.NewLine);" + Environment.NewLine);
                }
                if (cmd == "print")
                {
                    Console.WriteLine(all);
                }

            }
        }
        Console.WriteLine();
    }
}

Emily Stafford 1 Reputation point

2022-02-13T19:06:40.407+00:00

Oh, by "not compile" I mean the program compiles, but the code that the program runs does not work.
P a u l 7,571 Reputation points

2022-02-13T19:10:58.387+00:00

This is a bit abstract - would you mind including the contents of your data.vis file, the actual contents of your main.vis file and the expected contents of your main.vis?
Emily Stafford 1 Reputation point

2022-02-13T19:16:55.923+00:00
Okay, the main.vis file is never created, and data.vis contains:
print(Hello)
Which the outcome is meant to be not written to main.vis like most of the commands are and it is meant to display "Hello." But, if I were to make data.vis have:

copy(C:/test.txt, C:/output.txt)

The output in main.vis is:

File.Copy("@"C:/test.txt", "C:/output.txt");
Karen Payne MVP 30,216 Reputation points

2022-02-13T19:44:42.37+00:00

From your code there is nothing other than file manipulation, what did you expect?
Emily Stafford 1 Reputation point

2022-02-13T19:59:49.1+00:00

I was expecting errors, but ones I could figure out what they are.

Okay, the main.vis file is never created, and data.vis contains:
print(Hello)
Which the outcome is meant to be not written to main.vis like most of the commands are and it is meant to display "Hello." But, if I were to make data.vis have:

copy(C:/test.txt, C:/output.txt)

The output in main.vis is:

File.Copy("@"C:/test.txt", "C:/output.txt");

Above is what I expect.

Emily Stafford 1 Reputation point

2022-02-13T19:06:40.407+00:00

Oh, by "not compile" I mean the program compiles, but the code that the program runs does not work.
P a u l 7,571 Reputation points

2022-02-13T19:10:58.387+00:00

This is a bit abstract - would you mind including the contents of your data.vis file, the actual contents of your main.vis file and the expected contents of your main.vis?
Emily Stafford 1 Reputation point

2022-02-13T19:16:55.923+00:00

Okay, the main.vis file is never created, and data.vis contains:
print(Hello)
Which the outcome is meant to be not written to main.vis like most of the commands are and it is meant to display "Hello." But, if I were to make data.vis have:

copy(C:/test.txt, C:/output.txt)

The output in main.vis is:

File.Copy("@"C:/test.txt", "C:/output.txt");
Karen Payne MVP 30,216 Reputation points

2022-02-13T19:44:42.37+00:00

From your code there is nothing other than file manipulation, what did you expect?
Emily Stafford 1 Reputation point

2022-02-13T19:59:49.1+00:00

I was expecting errors, but ones I could figure out what they are.

Okay, the main.vis file is never created, and data.vis contains:
print(Hello)
Which the outcome is meant to be not written to main.vis like most of the commands are and it is meant to display "Hello." But, if I were to make data.vis have:

copy(C:/test.txt, C:/output.txt)

The output in main.vis is:

File.Copy("@"C:/test.txt", "C:/output.txt");

Above is what I expect.

Answer 1

P a u l 7,571

Ah I see - when you have a print call in your data.vis it doesn't print anything in the compiler program, but when you call copy from your compiler program it does create main.vis but the file contains File.Copy("@"C:/test.txt", "C:/output.txt");?

There's an extra leading double quote there before the @ - is that the issue you're trying to solve?

I've not done much compiler work myself but from what I've seen the common pattern is to split the process into "lexing" to find meaningful tokens from the stream of characters, then "parsing" to produce language constructs based on the tokens.

Here's how I'd be tempted to structure it: https://pastebin.com/xbtv2WYG

Emily Stafford 1 Reputation point

2022-02-13T21:11:36.58+00:00

Oh the double quote is a typo on my end and you are right.
Emily Stafford 1 Reputation point

2022-02-13T21:37:31.757+00:00

Thanks @P a u l I got it to work with your method, mine was very over complicated.
P a u l 7,571 Reputation points

2022-02-13T22:00:11.83+00:00

No problem - glad you got it sorted

My compiler is COMPLETELY messed up, any help?

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