Update .gitignore

Reviewed-on: max/ground#18

.gitignore

@@ -1 +1,3 @@
 ground
+Bobfile
+build

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "libraries"]
+	path = libraries
+	url = https://chookspace.com/ground/libraries

Bobfile

@@ -1,5 +0,0 @@
-compiler "g++";
-binary "ground";
-source "src/main.cpp";
-flag "O3";
-compile;

Makefile

@@ -0,0 +1,22 @@
+CXX = g++
+CXXFLAGS = -O3 -Isrc -Wall -Wextra -std=c++17
+
+BUILD_DIR = build
+SRCS = $(shell find src -name '*.cpp')
+VPATH = $(sort $(dir $(SRCS)))
+OBJS = $(addprefix $(BUILD_DIR)/, $(notdir $(SRCS:.cpp=.o)))
+TARGET = ground
+
+all: $(TARGET)
+
+$(TARGET): $(OBJS)
+	$(CXX) $(CXXFLAGS) -o $(TARGET) $(OBJS)
+
+$(BUILD_DIR)/%.o: %.cpp
+	@mkdir -p $(BUILD_DIR)
+	$(CXX) $(CXXFLAGS) -c $< -o $@
+
+clean:
+	rm -rf $(BUILD_DIR) $(TARGET)
+
+.PHONY: all clean

README.md

@@ -8,18 +8,12 @@ Ground is an interpreter which processes and interprets Ground instructions. It
 
 * **Simple syntax:** Ground doesn't have very many features, and that's intentional. It makes Ground easy to learn, and keeps it speedy.
 * **Super speed:** Ground code is faster than Python and JavaScript, and nearly as fast as C++ and Rust, while still being interpreted. (Tested using tests/to1000.grnd)
-* **Tiny interpreter:** Ground contains 761 lines of code (and 233 lines of comments) at the time of writing, and compiles in seconds.
+* **Tiny interpreter:** Ground contains 1482 lines of code (and 382 lines of comments) at the time of writing, and compiles in seconds.
 * **Portable:** Ground's code only uses features from the C++ standard library, using features from C++17 and prior.
 
 ## How do I get started?
 
-Clone the repo and compile with your favourite C++ compiler:
-
-```
-  g++ src/main.cpp -std=C++17 -O3 -o ground
-```
-
-(You can omit the -std flag on systems which default to the latest standard, and the -O3 flag if you're fine with a slightly slower interpreter.)
+Clone the repo and compile with `make`.
 
 Run a Ground program:
 

docs/demos/calc.grnd

@@ -0,0 +1,107 @@
+#!/usr/bin/env ground
+
+@begin
+stdout "Calculation: "
+stdin &calc
+getstrsize $calc &calcsize
+set &counter 0
+set &left ""
+set &right ""
+set &operator ' '
+set &isRight false
+
+## Preprocessing
+
+# Loop to parse input
+@loopstart
+getstrcharat $calc $counter &char
+
+# Remove any spaces (they're inconvenient)
+equal $char ' ' &cond
+if $cond %doneif
+
+# Check for operators
+# '+' operator
+inequal '+' $char &cond
+if $cond %minusOpCheck
+set &operator $char
+set &isRight true
+jump %doneif
+
+@minusOpCheck
+# '-' operator
+inequal '-' $char &cond
+if $cond %multiplyOpCheck
+set &operator $char
+set &isRight true
+jump %doneif
+
+@multiplyOpCheck
+# '*' operator
+inequal '*' $char &cond
+if $cond %divideOpCheck
+set &operator $char
+set &isRight true
+jump %doneif
+
+@divideOpCheck
+# '/' operator
+inequal '/' $char &cond
+if $cond %endOpChecks
+set &operator $char
+set &isRight true
+jump %doneif
+
+@endOpChecks
+if $isRight %isRight
+add $left $char &left
+jump %doneif
+@isRight
+add $right $char &right
+@doneif
+add 1 $counter &counter
+inequal $counter $calcsize &cond
+if $cond %loopstart
+# End loop
+
+## Computing
+
+# Convert types
+stod $left &left
+stod $right &right
+
+# Calculations
+# Adding
+inequal $operator '+' &cond
+if $cond %subtract
+add $left $right &result
+stdlnout $result
+jump %begin
+
+# Subtracting
+@subtract
+inequal $operator '-' &cond
+if $cond %multiply
+subtract $left $right &result
+stdlnout $result
+jump %begin
+
+# Multiplying
+@multiply
+inequal $operator '*' &cond
+if $cond %divide
+multiply $left $right &result
+stdlnout $result
+jump %begin
+
+# Dividing
+@divide
+inequal $operator '/' &cond
+if $cond %error
+divide $left $right &result
+stdlnout $result
+jump %begin
+
+@error
+stdlnout "Uh oh something terribly terrible happened lmao"
+jump %begin

docs/highlight.py

@@ -0,0 +1,70 @@
+import sys
+
+if len(sys.argv) < 2:
+    exit(1)
+
+fileName = sys.argv[1]
+thefile = open(fileName).readlines()
+
+def isnumber(num):
+    try:
+        float(num)
+        return True
+    except ValueError:
+        return False
+
+allstr = ""
+color = ""
+keywords = ["if", "jump", "end", "stdin", "stdout", "stdlnout", "set", "gettype", "exists", "setlist", "setlistat", "getlistat", "getlistsize", "listappend", "getstrsize", "getstrcharat", "add", "subtract", "multiply", "divide", "equal", "inequal", "not", "greater", "lesser", "stoi", "stod", "tostring", "fun", "return", "endfun", "pusharg", "call", "use", "extern", "error"]
+
+for line in thefile:
+    allstr += line + " <br> "
+
+lines = len(allstr.split("<br>"))-1
+a = allstr.split()
+
+for i in range(lines):
+    instr = False
+    incom = False
+    words = len(allstr.split("<br>")[i].split())
+    for j in range(words):
+        tempword = allstr.split("<br>")[i].split()[j]
+        if allstr.split("<br>")[i].split()[0][0] == "#":
+            color = "\033[37m"
+        elif allstr.split("<br>")[i].split()[0][0] == "@":
+            color = "\033[32m"
+        elif tempword in keywords:
+            color = "\033[95m"
+        elif isnumber(tempword) or tempword == "true" or tempword == "false":
+            color = "\033[96m"
+        elif tempword[0] == "#":
+            incom = True
+            color = "\033[37m"
+        elif tempword[0] == "&":
+            color = "\033[93m"
+        elif tempword[0] == "$":
+            color = "\033[33m"
+        elif tempword[0] == "%":
+            color = "\033[32m"
+        elif tempword[0] == "-":
+            color = "\033[34m"
+        elif tempword[0] == "!":
+            color = "\033[94m"
+        elif tempword[0] == "*":
+            color = "\033[93m"
+        elif tempword[0] == "\"":
+            color = "\033[92m"
+            instr = not instr
+        elif tempword[0] == "\'" and tempword[len(tempword)-1] == "\'":
+            color = "\033[92m"
+        elif instr:
+            color = "\033[92m"
+        elif incom:
+            color = "\033[37m"
+        else:
+            color = "\033[91m"
+        
+        print(f'{color}{tempword}', end=" ")
+    print()
+    
+print("\033[00m", end="")

docs/library-guide.md

@@ -0,0 +1,21 @@
+# Guide to Writing Libraries in Ground
+
+Ground has a "use" keyword which allows you to import libraries written in Ground, executing the code, and importing functions for use. This makes building reproducable bits of code very easy.
+
+This is a guide of best practices which should be followed.
+
+## .grnd file extension
+
+The Ground interpreter will automatically append ".grnd" when you use a library. If you write `use "myLibrary"` Ground will look for "myLibrary.grnd". This is a must-do.
+
+## camelCase Function and File Names
+
+For consistency, please use camelCase (with a lower case first letter) when naming functions and file names.
+
+## Don't use spaces
+
+It is impossible to use spaces in Ground function names. Please do not use spaces in file names, even though it will work.
+
+## Use functions for most operations
+
+Where possible, create functions to do everything needed with your library. You can include some code for initialisation, but don't do the entirety of your operations outside of your functions.

docs/syntax.md

@@ -1,6 +1,6 @@
 ## Ground Syntax Guide
 
-### General syntax
+## General syntax
 
 Ground uses simple instructions and arguments to run code.
 
@@ -32,12 +32,32 @@ Reference a line (a line reference) with a percent symbol before a line number:
   jump %10
 ```
 
-### Keywords
+Alternatively, set a label:
+
+```
+  @myLabel   # The '@' symbol denotes setting a label
+```
+
+and jump to that (setting labels will be discussed below):
+
+```
+  jump %myLabel
+```
+
+Add comments with a `#`:
+
+```
+  # This is a comment
+```
+
+## Keywords
 
 Note: &var can be replaced with any direct reference. $value can be replaced with a literal value or a value reference. %1 can be replaced with a line reference.
 
 Note: In most of these functions, if a direct reference is used, the value outputted by that function will be avaliable at that variable. Any existing value inside that variable will be overwritten.
 
+### Control Flow
+
 #### if
 
 Make a decision based on a boolean. If the boolean is true, jumps to the line referenced.
@@ -54,25 +74,29 @@ Usage: `jump %1`
 
 Ends the program. Requires an integer for a status code.
 
-Usage: `end $value`
+Usage: `end $intvalue`
 
-#### stdin
+### I/O
+
+#### input (or stdin)
 
 Allows input from the console.
 
-Usage: `stdin &var`
+Usage: `input &var`
 
-#### stdout
+#### print (or stdout)
 
 Allows output to the console.
 
-Usage: `stdout $value`
+Usage: `print $value`
 
-#### stdlnout
+#### println (or stdlnout)
 
 Allows output to the console, appending a new line at the end.
 
-Usage: `stdlnout $value`
+Usage: `println $value`
+
+### Variables and Lists
 
 #### set
 
@@ -80,6 +104,66 @@ Allows you to set a variable to a value.
 
 Usage: `set &var $value`
 
+#### gettype
+
+Gets the type of a variable. Outputs a string which can be "int", "double", "bool", "string", "char".
+
+Usage: `gettype $value &var`
+
+#### exists
+
+Checks if a variable exists with a direct reference. If the variable exists, outputs true. Otherwise outputs false.
+
+Usage `exists &var1 &var2`
+
+Note: You can also replace &var1 with a list or line reference to check if it also exists
+
+#### setlist
+
+Allows you to initialize a list.
+
+Usage: `setlist &list $value1 $value2 $value3...`
+
+#### setlistat
+
+Sets a list item at an index. The item at the index must already exist. Lists are index 0.
+
+Usage: `setlistat &list $intvalue $value`
+
+#### getlistat
+
+Gets a list item at an index, and puts it in the variable provided. The item at the index must already exist. Lists are index 0.
+
+Usage: `getlistat &list $intvalue &var`
+
+#### getlistsize
+
+Gets the size of a list and puts it in the variable provided.
+
+Usage: `getlistsize &list &var`
+
+#### listappend
+
+Appends an item to a list.
+
+Usage: `listappend &list $var`
+
+### String Operations
+
+#### getstrsize
+
+Gets the size of a string and puts it in the variable provided.
+
+Usage: `getstrsize $stringvalue &var`
+
+#### getstrcharat
+
+Gets a character at a certain position in a string and saves it to a variable.
+
+Usage: `getstrcharat $stringvalue $intvalue &var`
+
+### Maths
+
 #### add
 
 Adds two numbers. Numbers mean an integer or a double. Outputs to a direct reference.
@@ -104,6 +188,8 @@ Divides two numbers. Numbers mean an integer or a double. Outputs to a direct re
 
 Usage: `divide $value $value &var`
 
+### Comparisons
+
 #### equal
 
 Checks if two values are equal. Outputs a boolean to a direct reference.
@@ -116,6 +202,12 @@ Checks if two values are not equal. Outputs a boolean to a direct reference.
 
 Usage: `inequal $value $value &var`
 
+#### not
+
+Negates a boolean.
+
+Usage: `not $value &var`
+
 #### greater
 
 Checks if the left value is greater than the right value. Outputs a boolean to a direct reference.
@@ -126,4 +218,111 @@ Usage: `greater $value $value &var`
 
 Checks if the left value is lesser than the right value. Outputs a boolean to a direct reference.
 
-Usage: `lesser $value $value &var`
+Usage: `lesser $value $value &var`
+
+### Type Conversions
+
+#### stoi
+
+Converts a string to an integer. Throws an error if the string cannot be turned into an integer.
+
+Usage: `stoi $stringvalue &var`
+
+#### stod
+
+Converts a string to a double. Throws an error if the string cannot be turned into a double.
+
+Usage: `stod $stringvalue &var`
+
+#### tostring
+
+Converts any type to a string.
+
+Usage: `tostring $value &var`
+
+### Functions and function specific features (Experimental, please report bugs!)
+
+Some symbols specific to this category:
+
+* `!function`: A function reference
+
+* `-type`: A type reference. Can be one of the following: "-string", "-char", "-int", "-double", "-bool", or a custom struct (see "Custom data structures" below)
+
+#### fun
+
+Defines a function. All code between `fun` and `endfun` will be included in the function.
+
+Usage: `fun -type !functionname -type &var -type &var -type &var   # and so on...`
+
+Usage note: The first type specified before the function name must be the return type. The type displayed before all vars shows what type that variable must be.
+
+#### return
+
+Returns back to the main program (or other function that called this function). Also returns a value, which must be of the type defined when defining the function.
+
+Usage: `return $value`
+
+#### endfun
+
+Ends a function definition. When a function reaches the end the argument list will be cleared.
+
+Usage: `endfun`
+
+#### pusharg
+
+Adds a value to the argument list which will be passed to the function when it is called.
+
+Usage: `pusharg $value`
+
+#### call
+
+Calls a function, with all the arguments in the argument list. The return value will be put in the specified variable.
+
+Usage: `call !function &var
+
+### Custom Data Structures
+
+#### struct
+
+Begins creation of a custom data structure, which can contain values and functions. Similar to a class or struct in other programming languages.
+
+In between the `struct` and `endstruct` lines, you can insert the following:
+
+* `init` statements, to initialize values
+* `fun`/`endfun` statements, to add member functions to the struct
+
+When calling a function from inside a struct, all members of the struct are avaliable to read from and write to.
+
+Usage: `struct -structName`
+
+#### endstruct
+
+Ends creation of a custom data structure.
+
+Usage: `endstruct`
+
+#### init
+
+Initialises a variable with the default value of a type.
+
+Usage: `init &var -type`
+
+### Interacting with Libraries
+
+#### use
+
+Attempts to import another Ground program. Gets inserted wherever the use statement is. Any code (including code outside function declarations) will be executed. All functions from the library will be given a prefix, meaning functions will be registered as `!libName:functionName`.
+
+Note: Ground will check the directory where the program is being run from when trying to find imported programs. If that fails, it will check the directory set in the $GROUND_LIBS environment variable set by your system. The '.grnd' extension is appended automatically.
+
+Usage: `use $stringvalue`
+
+#### extern
+
+Attempts to import a shared object library written for Ground. All functions in the external library will be usable with `call`. All functions from the library will be given a prefix, meaning functions will be registered as `!libName:functionName`.
+
+Note: Ground will check the directory set in the $GROUND_LIBS environment variable set by your system. The '.so' (Linux), '.dylib' (macOS), or '.dll' (Windows) extension is appended automatically.
+
+Documentation on how to do external libraries coming soon.
+
+Usage: `extern $stringvalue`

docs/tutorial.md

@@ -0,0 +1,349 @@
+# Ground Tutorial
+
+Get up and running with Ground in no time!
+
+## First Steps
+
+First, create a file ending in `.grnd` and open it in your favourite text editor. Then, write the following:
+
+```
+println "Hello, World!"
+```
+
+(I think you know what this does.)
+
+(If you don't, it prints something to the console, and adds a new line at the end.)
+
+You can test it on the console using the Ground interpreter:
+
+```bash
+ground myFile.grnd
+```
+
+But that's boring! You want to be able to do more in Ground. So, let's ask the user for something. We can write:
+
+```
+input &var
+println $var
+```
+
+This will wait for the user to type something into the console and press enter, and will save it to the variable `var`. Then, we print out the variable `var`.
+
+But how do variables work in Ground?
+
+## Variables
+
+In Ground, variables are used to store values. (Yeah, I know, very original.) However, variables work a bit differently. What you need to know right now are called "value references" and "direct references".
+
+### Value References
+
+A value reference gets the value of a variable, and inserts it into the statement currently being executed.
+
+For example, let's assume I have a variable called `myVar`, and it has the value `"Hello from the variable!"`. If you want to access that value, you use a value reference. To use a value reference, write the variable name, but prefixed with the `$` sign.
+
+Let's try printing out `myVar`:
+
+```
+println $myVar
+```
+
+Sidenote: Value references are inserted before each line of code is ran.
+
+You should see "Hello from the variable!" on the console, assuming you defined `myVar` beforehand. But how do you define a variable?
+
+### Direct References
+
+Direct references allow you to write to a variable. To use one, prefix your desired variable name with an `&` symbol.
+
+Ground works differently to many programming languages in that you can't write things like `myVar = 10`. Everything uses an instruction (which I'll explain in a moment). So in Ground, you'd write:
+
+```
+set &myVar 10
+```
+
+to set `myVar` to 10. Simple, right?
+
+### Summary
+* Value references let you get the variable of a value, and are prefixed with `$`.
+* Direct references let you write to variables, and are prefixed with `&`.
+
+As an example:
+
+```
+set &myVar "Hello from the variable!"
+println $myVar
+```
+
+will set `myVar` to "Hello from the variable!", and print it to the console.
+
+## Instructions
+
+Now, I assume you want to do more than setting variables and printing them, right? Luckily for you, Ground has (at the time of writing) 35 instructions to build whatever you can think of (not to mention libraries, but that's a later topic).
+
+First, here's how you use them:
+
+### Using instructions
+
+Each line of Ground code contains an instruction and arguments. For example:
+
+```
+add 9 10 &result
+```
+
+This uses the `add` keyword (which adds two things together) to add 9 and 10, and outputs the result (which would be 19) to the direct reference provided (`result`).
+
+So each instruction works sort of like a function in most other languages.
+
+Now you know how they work, here's a list of cool instructions:
+
+### Cool instructions
+
+So here's a list of some instructions keywords to know about at present:
+
+### Mathy stuff
+
+`add`, `subtract`, `multiply`, `divide`
+
+These instructions all take two numbers, and operate on them (add adds, subtract subtracts, and so on), and then output the result to the provided direct reference. You can use them all like:
+
+```
+add 5 6 &addition
+```
+
+```
+multiply 10 30 &myVar
+```
+
+(and so on.)
+
+Tip: `add` works on strings for concatenation! (for those who don't know, a string is a series of characters surrounded with `"`'s)
+
+### User interaction
+
+`input` (or `stdin`)
+
+This instruction takes input from the console, and saves it to the given direct reference. For example:
+
+```
+input &myVar
+```
+
+`print` (or `stdout`) and `println` (or `stdlnout`)
+
+These instructions print out values to the console. `println` also prints a new line character after your statement. For example:
+
+```
+println "Hi there! This has a new line at the end"
+print "Heyo! This doesn't have a new line at the end."
+```
+
+### Other variable stuff
+
+`set`
+
+Sets a variable to something.
+
+For example:
+
+```
+set &myVar "Hi there!"
+```
+
+`gettype`
+
+Gets the type of a variable, in the form of a string. As an example:
+
+```
+gettype $someSortOfValue &type
+```
+
+If you accessed `$type`, you'd get one of the following:
+
+"int", "double", "bool", "string", "char".
+
+More on types later!
+
+## Commenting
+
+Comments are done with a `#`. Anything after the `#` on the line is ignored.
+
+## Control Flow
+
+Now, I assume you want to be able to use logic in your programs, right? Ground simplifies control flow to the bare minimum.
+
+### Labels
+
+A label is a point in your Ground code you can jump to. To set one, instead of writing an instruction, you can do something like this:
+
+```
+@myLabel
+```
+
+This will allow you to jump back to that point in code at any time.
+
+### Jumping around
+
+Jump to labels with the `jump` instruction.
+
+```
+# Infinite loop!
+@myLabel
+jump %myLabel
+```
+
+But what does `%myLabel` mean? This is the third reference type: a line reference. It tells Ground which line to look at.
+
+You can also use `if`, however `if` works differently:
+
+```
+@myLabel
+if $myCondition %myLabel
+```
+
+This essentialy says "if `myCondition` is true, then jump to `myLabel`". But how do you compute conditions?
+
+### More instructions!
+
+Here are some useful instructions to compute a condition:
+
+`equal`, `inequal`
+
+These compare two values, and puts a boolean in a variable once they're compared.
+
+Example:
+
+```
+# Prints out true
+equal "Hello!" "Hello!" &condition
+println $condition
+
+# Prints out false
+equal 10 20 &condition
+println $condition
+
+# Prints out true
+inequal "Hi there!" "Hello there!" &condition
+println $condition
+```
+
+`equal` and `inequal` work on most regular values.
+
+`greater`, `lesser`
+
+These instructions check if the first provided value is greater or lesser than the second provided value. As an example:
+
+```
+# Prints out true
+greater 10 5 &condition
+println $condition
+```
+
+### So how do I use these?
+
+Labels, `if`, and `jump` can be used to create what would be if and while statements in other languages. Here's a loop that counts to 10:
+
+```
+set &counter 0
+
+@loopStart
+
+# Add one to our counter and print it out
+add $counter 1 &counter
+println $counter
+
+# Check if we've hit 10 yet
+equal $counter 10 &condition
+
+# If we have, go to the end of the loop
+if $condition %loopEnd
+
+# Otherwise, go back to the start
+jump %loopStart
+@loopEnd
+```
+
+And here's a conditional if statement that checks if a user guessed the right password:
+
+```
+# Ask the user what the password is
+print "Password: "
+input &password
+
+# Check if they got it right
+equal $password "supersecurepassword" &condition
+if $condition %rightPassword
+jump %wrongPassword
+
+@rightPassword
+println "Correct!"
+jump %end
+
+@wrongPassword
+println "Incorrect!"
+jump %end
+
+@end
+```
+
+## Building a meaningful program
+
+Now we have all the building blocks to create a simple program!
+
+Let's write a program that loops until the user tells us the right answer to a question. Here's how we do it:
+
+First let's create a label so we can loop back to the start of our program:
+
+```
+@begin
+```
+
+Then we ask the user for their answer:
+
+```
+print "Do you like cheese?"
+input &userInput
+```
+
+After this, we can check for the desired answer:
+```
+equal $userInput "yes" &condition
+if $condition %success
+```
+
+Now, if the user answers "yes" to our question, they will be sent to the `%success` label. But we need to handle what happens if they don't say what we want them to.
+
+So we can tell them that they said the wrong thing, and jump back to the start of the program.
+
+```
+println "That's a pity"
+jump %begin
+```
+
+At last, we should handle what happens when we get the input we want:
+
+```
+@success
+println "Yay!"
+```
+
+Try running that program!
+
+Here's the full text of what we wrote:
+
+```
+@begin
+print "Do you like cheese?"
+input &userInput
+equal $userInput "yes" &condition
+if $condition %success
+
+println "That's a pity"
+jump %begin
+
+@success
+println "Yay!"
+```
+
+## Next Steps
+
+Now you've completed the basic tutorial! This will probably be expanded in future, but for now you can look at [the syntax guide](https://chookspace.com/ground/ground/src/branch/master/docs/syntax.md) for more features to use.

docs/writing-a-program.md

@@ -0,0 +1,25 @@
+## Writing programs with Ground (WORK IN PROGRESS GUIDE)
+
+Ground is a very easy language to learn. In this guide, you will learn how to write a simple calculator in Ground, as well as best practices (which there aren't many of, since Ground is so simple).
+
+Note: This assumes you've read and understand the syntax.md document in this folder.
+
+### Let's start!  
+
+Open a new file with the `.grnd` extension. Should look something like this:
+
+```
+
+```
+
+(Real empty in that file.)
+
+Let's add some code! Create a label for the start, since we'll loop back once we've calculated, and ask for the user's input:
+
+```
+@start
+stdout "Calculation: "
+stdin &calc
+```
+
+At the calc variable, we have whatever the user typed in. This should look something like `9+10`, `1 / 3` or who knows what else. But first we should organise this data. Let's create a loop to iterate through this input, and a counter to keep moving forward:

src/data/data.cpp

@@ -0,0 +1,244 @@
+#include "data.h"
+#include "../main.h"
+#include "../error/error.h"
+#include <string>
+#include <vector>
+#include <map>
+#include <stack>
+
+/*
+    labelStack stack
+    Allows each function to hold it's own set of labels
+*/
+std::stack<std::map<std::string, int>> labelStack;
+
+/*
+    variables map
+    Contains all variables made while running the program. See also Literal struct.
+*/
+std::map<std::string, Literal> variables;
+
+/*
+    functions map
+    Contains the code of functions and types of their values
+*/
+std::map<std::string, Function> functions;
+
+/*
+    structs map
+    Contains structs (see the Struct struct for more info)
+*/
+std::map<std::string, Struct> structs;
+
+/*
+    fnArgs vector
+    Containst the arguments to be passed to a function
+*/
+std::vector<Literal> fnArgs;
+
+// External library functions and other things
+
+// Handle to loaded libraries
+std::map<std::string, void*> loadedLibraries;
+
+// Map of function name to function pointer
+std::map<std::string, void*> externalFunctions;
+
+// Libraries currently imported
+std::vector<std::string> libraries;
+
+// Conversion functions
+GroundValue literalToGroundValue(const Literal& lit) {
+    GroundValue gv;
+    if (std::holds_alternative<int>(lit.val)) {
+        gv.type = GROUND_INT;
+        gv.data.int_val = std::get<int>(lit.val);
+    } else if (std::holds_alternative<double>(lit.val)) {
+        gv.type = GROUND_DOUBLE;
+        gv.data.double_val = std::get<double>(lit.val);
+    } else if (std::holds_alternative<bool>(lit.val)) {
+        gv.type = GROUND_BOOL;
+        gv.data.bool_val = std::get<bool>(lit.val) ? 1 : 0;
+    } else if (std::holds_alternative<std::string>(lit.val)) {
+        gv.type = GROUND_STRING;
+        gv.data.string_val = const_cast<char*>(std::get<std::string>(lit.val).c_str());
+    } else if (std::holds_alternative<char>(lit.val)) {
+        gv.type = GROUND_CHAR;
+        gv.data.char_val = std::get<char>(lit.val);
+    }
+    return gv;
+}
+
+/*
+    catches stackmap
+    This stores all catches in a scope, to catch errors before they happen.
+*/
+std::stack<std::map<std::string, Direct>> catches;
+
+Literal groundValueToLiteral(const GroundValue& gv) {
+    Literal lit;
+    switch (gv.type) {
+        case GROUND_INT:
+            lit.val = gv.data.int_val;
+            break;
+        case GROUND_DOUBLE:
+            lit.val = gv.data.double_val;
+            break;
+        case GROUND_BOOL:
+            lit.val = (gv.data.bool_val != 0);
+            break;
+        case GROUND_STRING:
+            lit.val = std::string(gv.data.string_val);
+            break;
+        case GROUND_CHAR:
+            lit.val = gv.data.char_val;
+            break;
+    }
+    return lit;
+}
+
+/*
+    is* functions
+    These functions determine if a string value can be converted into a different type.
+*/
+
+bool isInt(std::string in) {
+    try {
+        std::stoi(in);
+        if (std::stod(in) != std::stoi(in)) return false;
+        return true;
+    } catch (...) {
+        return false;
+    }
+}
+
+bool isDouble(std::string in) {
+    try {
+        std::stod(in);
+        return true;
+    } catch (...) {
+        return false;
+    }
+}
+
+bool isBool(std::string in) {
+    if (in == "true" || in == "false") return true;
+    else return false;
+}
+
+bool isString(std::string in) {
+    if (in.size() >= 2 && in[0] == '"' && in[in.size() - 1] == '"') return true;
+    else return false;
+}
+
+bool isChar(std::string in) {
+    if (in.size() == 3 && in[0] == '\'' && in[in.size() - 1] == '\'') return true;
+    else return false;
+}
+
+bool isValue(std::string in) {
+    if (in.size() >= 1 && in[0] == '$') return true;
+    else return false;
+}
+
+bool isDirect(std::string in) {
+    if (in.size() >= 1 && in[0] == '&') return true;
+    else return false;
+}
+
+bool isLine(std::string in) {
+    if (in.size() >= 1 && in[0] == '%') return true;
+    else return false;
+}
+
+bool isLabel(std::string in) {
+    if (in.size() >= 1 && in[0] == '@') return true;
+    else return false;
+}
+
+bool isType(std::string in) {
+    if (in.size() > 1 && in[0] == '-') return true;
+    else return false;
+}
+
+bool isFunction(std::string in) {
+    if (in.size() >= 1 && in[0] == '!') return true;
+    else return false;
+}
+
+bool isReferencingStruct(std::string in) {
+    return in.find('.') != std::string::npos;
+}
+
+/*
+    getType function
+    This function determines the type of a value inside a string based on the is*
+    functions above. Returns a type from the Types enum class.
+*/
+Types getType(std::string in) {
+    if (isInt(in)) return Types::Int;
+    if (isDouble(in)) return Types::Double;
+    if (isBool(in)) return Types::Bool;
+    if (isString(in)) return Types::String;
+    if (isChar(in)) return Types::Char;
+    if (isValue(in)) return Types::Value;
+    if (isDirect(in)) return Types::Direct;
+    if (isLine(in)) return Types::Line;
+    if (isLabel(in)) return Types::Label;
+    if (isType(in)) return Types::Type;
+    if (isFunction(in)) return Types::Function;
+    error("Could not determine type of \"" + in + "\"");
+    return Types::Int;
+}
+
+/*
+    getLitType function
+    This function determines the type of a value inside a Literal based on the
+    holds_alternative() function. Returns a type from the Types enum class.
+*/
+Types getLitType(Literal in) {
+    if (std::holds_alternative<int>(in.val)) return Types::Int;
+    if (std::holds_alternative<double>(in.val)) return Types::Double;
+    if (std::holds_alternative<bool>(in.val)) return Types::Bool;
+    if (std::holds_alternative<std::string>(in.val)) return Types::String;
+    if (std::holds_alternative<char>(in.val)) return Types::Char;
+    if (std::holds_alternative<List>(in.val)) return Types::List;
+    return Types::Other;
+}
+
+/*
+    setVal function
+    This function sets the value of a variable (whether in a struct or not).
+*/
+void setVal(std::string varName, Literal value) {
+    if (isReferencingStruct(varName)) {
+        std::string structName;
+        std::string varInStruct;
+
+        size_t dotPos = varName.find('.');  // Use size_t
+        if (dotPos != std::string::npos) {
+            structName = varName.substr(0, dotPos);
+            varInStruct = varName.substr(dotPos + 1);
+            if (variables.find(structName) != variables.end()) {
+                if (std::holds_alternative<Struct>(variables[structName].val)) {
+                    Struct structVal = std::get<Struct>(variables[structName].val);
+                    if (structVal.values.find(varInStruct) != structVal.values.end()) {
+                        structVal.values[varInStruct] = value;
+                        variables[structName].val = structVal;  // Write back the modified struct
+                    } else {
+                        error("Could not find property '" + varInStruct + "' in struct '" + structName + "'");
+                    }
+                } else {
+                    error("Variable '" + structName + "' is not a struct");
+                }
+            } else {
+                error("Could not find struct '" + structName + "'");
+            }
+        } else {
+            error("Invalid struct member access syntax");
+        }
+    } else {
+        // Handle regular variables (both existing and new)
+        variables[varName] = value;
+    }
+}

src/data/data.h

@@ -0,0 +1,66 @@
+#pragma once
+#include "../main.h"
+#include <string>
+#include <vector>
+#include <map>
+#include <stack>
+
+/*
+    functions map
+    Contains the code of functions and types of their values
+*/
+extern std::map<std::string, Function> functions;
+
+/*
+    structs map
+    Contains structs (see the Struct struct for more info)
+*/
+extern std::map<std::string, Struct> structs;
+
+/*
+    fnArgs vector
+    Containst the arguments to be passed to a function
+*/
+extern std::vector<Literal> fnArgs;
+
+// External library functions and other things
+
+// Handle to loaded libraries
+extern std::map<std::string, void*> loadedLibraries;
+
+// Map of function name to function pointer
+extern std::map<std::string, void*> externalFunctions;
+
+// Libraries currently imported
+extern std::vector<std::string> libraries;
+
+// catches stackmap
+extern std::stack<std::map<std::string, Direct>> catches;
+
+// labelStack stack
+extern std::stack<std::map<std::string, int>> labelStack;
+
+// variables map
+extern std::map<std::string, Literal> variables;
+
+GroundValue literalToGroundValue(const Literal& lit);
+Literal groundValueToLiteral(const GroundValue& gv);
+void setVal(std::string varName, Literal value);
+
+bool isInt(std::string in);
+bool isDouble(std::string in);
+bool isBool(std::string in);
+bool isString(std::string in);
+bool isChar(std::string in);
+bool isValue(std::string in);
+bool isDirect(std::string in);
+bool isLine(std::string in);
+bool isLabel(std::string in);
+bool isType(std::string in);
+bool isFunction(std::string in);
+bool isReferencingStruct(std::string in);
+
+Types getType(std::string in);
+Types getLitType(Literal in);
+
+void setVal(std::string varName, Literal value);

src/error/error.cpp

@@ -0,0 +1,34 @@
+#include <iostream>
+#include <cstdlib>
+#include "error.h"
+#include "../data/data.h"
+#include "../main.h"
+
+using namespace std;
+
+/*
+    error function
+    Takes a string (which is a debug message) and prints it to the console, letting the
+    user know what went wrong with the program.
+*/
+Literal error(string in, string errCode, int exitc) {
+    Error retError;
+    retError.code = errCode;
+    retError.pops = 0;
+    while (catches.size() > 0) {
+        if (catches.top().find(errCode) != catches.top().end()) {
+            Literal tmpLit;
+            tmpLit.val = false;
+            setVal(catches.top()[errCode].varName, tmpLit);
+            retError.reporter = catches.top()[errCode].varName;
+            Literal tmpLit2;
+            tmpLit2.val = retError;
+            return tmpLit2;
+        } else {
+            catches.pop();
+            retError.pops ++;
+        }
+    }
+    cout << "\033[31m" + errCode + ": \033[39m" << in << endl;
+    exit(exitc);
+}

src/error/error.h

@@ -0,0 +1,6 @@
+#pragma once
+
+#include "../main.h"
+#include <string>
+
+Literal error(std::string in, std::string errCode = "syntaxError", int exitc = 1);

src/interpreter/interpreter.h

@@ -0,0 +1,7 @@
+#pragma once
+
+#include <vector>
+#include "../main.h"
+
+void preProcessLabels(std::vector<Instruction> instructions);
+Literal exec(std::vector<Instruction> in, bool executingFunction = false);

src/lexer/lexer.cpp

@@ -0,0 +1,81 @@
+#include <vector>
+#include <string>
+#include "lexer.h"
+
+using namespace std;
+
+/*
+    lexer function
+    This function takes the raw text from the file and splits it into a format
+    that the parser can understand.
+*/
+
+vector<vector<string>> lexer(string in) {
+    vector<vector<string>> out;
+    vector<string> line;
+    string buf;
+    bool procString = false;
+    bool procChar = false;
+    bool isComment = false;
+
+    for (char i : in) {
+        switch (i) {
+            case '"':
+                if (!isComment) {
+                    if (procChar) {
+                        buf.push_back(i);
+                    } else {
+                        procString = !procString;
+                        buf.push_back(i);
+                    }
+                }
+                break;
+            case '\'':
+                if (!isComment) {
+                    if (procString) {
+                        buf.push_back(i);
+                    } else {
+                        procChar = !procChar;
+                        buf.push_back(i);
+                    }
+                }
+                break;
+            case '\n':
+                if (!procString && !procChar) {
+                    if (!buf.empty()) line.push_back(buf);
+                    out.push_back(line);
+                    buf.clear();
+                    line.clear();
+                    isComment = false;
+                } else {
+                    if (!isComment) buf.push_back(i);
+                }
+                break;
+            case '#':
+                if (!procString && !procChar) {
+                    isComment = true;
+                    if (!buf.empty()) line.push_back(buf);
+                    out.push_back(line);
+                    buf.clear();
+                    line.clear();
+                } else {
+                    buf.push_back(i);
+                }
+                break;
+            case ' ':
+                if (!procString && !procChar) {
+                    if (!buf.empty() && !isComment) line.push_back(buf);
+                    buf.clear();
+                } else {
+                    buf.push_back(i);
+                }
+                break;
+            default:
+                if (!isComment) buf.push_back(i);
+                break;
+        }
+    }
+    if (!buf.empty()) line.push_back(buf);
+    out.push_back(line);
+    return out;
+}

src/lexer/lexer.h

@@ -0,0 +1,6 @@
+#pragma once
+
+#include <vector>
+#include <string>
+
+std::vector<std::vector<std::string>> lexer(std::string in);

src/main.h

@@ -0,0 +1,250 @@
+#pragma once
+
+#include <vector>
+#include <string>
+#include <map>
+#include <variant>
+
+// Headers for external libraries
+#ifdef _WIN32
+    // Note: Windows support is experiemental. Maybe try using a superior
+    // operating system? (cough cough, Linux?)
+    #include <windows.h>
+    #define DLOPEN(path) LoadLibrary(path)
+    #define DLSYM(handle, name) GetProcAddress(handle, name)
+    #define DLCLOSE(handle) FreeLibrary(handle)
+    #define DLERROR() "Windows DLL Error"
+#else
+    #include <dlfcn.h>
+    #define DLOPEN(path) dlopen(path, RTLD_LAZY)
+    #define DLSYM(handle, name) dlsym(handle, name)
+    #define DLCLOSE(handle) dlclose(handle)
+    #define DLERROR() dlerror()
+#endif
+
+/*
+    Instructions enum class
+    For each function keyword, an instruction is assigned. See also parser
+    function, interpreter function, Instruction struct
+*/
+enum class Instructions {
+    Jump, If,
+    Stdout, Stdin, Stdlnout,
+    Add, Subtract, Multiply, Divide,
+    Equal, Inequal, Greater, Lesser, Not,
+    End, Set, Empty, Gettype, Exists,
+    Setlist, Getlistat, Setlistat, Getlistsize, Listappend, Listprepend,
+    Getstrcharat, Getstrsize,
+    Stoi, Stod, Tostring,
+    Fun, Return, Endfun, Pusharg, Call, Local,
+    Use, Extern, Error, Catch, Try, Exception,
+    Struct, Endstruct, Init
+};
+
+/*
+    Types enum class
+    Assists in type checking in the parser function. For example, the
+    following values correspond to the following types:
+        1             Int
+        3.14       Double
+        "Hello!"   String
+        'e'          Char
+        true         Bool
+        $value      Value
+        &var       Direct
+        %10          Line
+    See also parser function
+*/
+enum class Types {
+    Int, Double, String, Char, Bool, Value, Direct, Line, List, Label, Type, Function, Other
+};
+
+// Forward declaration of Literal for list
+struct Literal;
+
+/*
+    List struct
+    Contains literal values inside a vector. For example, if the following
+    program was written:
+        setlist #myNums 3 5 9 13
+    The List struct which would be created and stored should look like this:
+    {
+        val = {
+            Literal {
+                val = 3
+            },
+            Literal {
+                val = 5
+            },
+            Literal {
+                val = 9
+            },
+            Literal {
+                val = 13
+            },
+        }
+    }
+    All elements in the list must be of the same type. See also Literal struct.
+*/
+struct List {
+    std::vector<Literal> val;
+};
+
+/*
+    Direct struct
+    If the program being executed makes a direct reference, it is stored in a Direct
+    struct. For example, if the following line was written:
+        stdin &myVar
+    The Direct struct in the instruction should look like this:
+    {
+        varName = "myVar";
+    }
+*/
+struct Direct {
+    std::string varName;
+};
+
+struct TypeRef {
+    bool isCustomType = false;
+    std::string customType;
+    Types type;
+};
+
+struct FunctionRef {
+    std::string fnName;
+};
+
+/*
+    Label struct
+    Contains information needed to register labels
+*/
+struct Label {
+    std::string id;
+    int lineNum = -1;
+};
+
+/*
+    Line struct
+    Contains information needed to jump to lines
+*/
+struct Line {
+    int lineNum = -1;
+    bool isLabel = false;
+    std::string label;
+};
+
+/*
+    ValueRef struct
+    If the program being executed makes a value reference, it is stored in a ValueRef
+    struct. For example, if the following line was written:
+        stdin &myVar
+    The ValueRef struct in the instruction should look like this:
+    {
+        varName = "myVar";
+    }
+*/
+struct ValueRef {
+    std::string varName;
+};
+
+/*
+    Instruction struct
+    An instruction usually corresponds to a line in the program being interpreted.
+    For example, if the following line was written:
+        add 5 $myVar &outVar
+    The instruction should look like this:
+    {
+        inst = Instructions::Add;
+        args = {
+            Literal {
+                val = 5
+            },
+            ValueRef {
+                varName = "myVar"
+            },
+            Direct {
+                varName = "outVar"
+            }
+        };
+    }
+    inst starts as empty, so empty lines and commented out lines do not get in the
+    way of jump and if.
+    See also: Instructions enum class, Literal struct, ValueRef struct, Direct struct,
+    Line struct, exec function, parser function
+*/
+
+typedef std::variant<Literal, ValueRef, FunctionRef, TypeRef, Direct, Line> argument;
+struct Instruction {
+    Instructions inst = Instructions::Empty;
+    std::vector<argument> args;
+    bool isLabel = false;
+    Label label;
+};
+
+struct FnArg {
+    Direct ref;
+    Types type;
+};
+
+/*
+    Function struct
+    Contains information needed to run a Ground function.
+*/
+struct Function {
+    Types returnType;
+    std::vector<FnArg> args;
+    std::vector<Instruction> instructions;
+    std::vector<Label> labels;
+};
+
+/*
+    Struct struct
+    This struct stores data for structures in Ground.
+*/
+struct Struct {
+    std::map<std::string, Literal> values;
+    std::map<std::string, Function> functions;
+};
+
+struct Error {
+    std::string code;
+    int pops;
+    std::string reporter;
+};
+
+/*
+    Literal struct
+    Contains literal values. For example, if the following line was written:
+        stdout "Hello world!"
+    The Literal struct in the instruction should look like this:
+    {
+        val = "Hello world!"; // I am ignoring the variant for simplicity
+                              // of documenting the code
+    }
+    All value references are swapped out for their respective Literal they
+    point to. See also variables map, parser function, interpreter function
+*/
+struct Literal {
+    std::variant<int, double, bool, std::string, char, List, Struct, Error> val;
+};
+
+// C-compatible enum and types for developing libraries for Ground in C
+typedef enum {
+    GROUND_INT,
+    GROUND_DOUBLE,
+    GROUND_BOOL,
+    GROUND_STRING,
+    GROUND_CHAR
+} GroundType;
+
+typedef struct {
+    GroundType type;
+    union {
+        int int_val;
+        double double_val;
+        int bool_val;
+        char* string_val;
+        char char_val;
+    } data;
+} GroundValue;
+

src/parser/parser.cpp

@@ -0,0 +1,184 @@
+#include <vector>
+#include <string>
+#include <map>
+#include "parser.h"
+#include "../main.h"
+#include "../data/data.h"
+#include "../error/error.h"
+
+using namespace std;
+
+/*
+    parser function
+    This function takes a vector of a vector of strings from the lexer and
+    converts it into a list of instructions that the interpreter can understand.
+*/
+vector<Instruction> parser(vector<vector<string>> in) {
+    vector<Instruction> out;
+    for (vector<string> line : in) {
+        Instruction currentInstruction;
+        if (line.size() < 1) {
+            out.push_back(currentInstruction);
+            continue;
+        }
+        string inst = line[0];
+        if (isLabel(inst)) {
+            currentInstruction.isLabel = true;
+            currentInstruction.label.id = inst.substr(1);
+            line.erase(line.begin());
+        }
+        else if (isFunction(inst)) {
+            currentInstruction.inst = Instructions::Call;
+            FunctionRef newFnRef;
+            newFnRef.fnName = inst.substr(1);
+            currentInstruction.args.push_back(newFnRef);
+        }
+        else if (inst == "stdout") currentInstruction.inst = Instructions::Stdout;
+        else if (inst == "print") currentInstruction.inst = Instructions::Stdout;
+        else if (inst == "stdlnout") currentInstruction.inst = Instructions::Stdlnout;
+        else if (inst == "println") currentInstruction.inst = Instructions::Stdlnout;
+        else if (inst == "stdin") currentInstruction.inst = Instructions::Stdin;
+        else if (inst == "input") currentInstruction.inst = Instructions::Stdin;
+        else if (inst == "add") currentInstruction.inst = Instructions::Add;
+        else if (inst == "subtract") currentInstruction.inst = Instructions::Subtract;
+        else if (inst == "multiply") currentInstruction.inst = Instructions::Multiply;
+        else if (inst == "divide") currentInstruction.inst = Instructions::Divide;
+        else if (inst == "set") currentInstruction.inst = Instructions::Set;
+        else if (inst == "end") currentInstruction.inst = Instructions::End;
+        else if (inst == "jump") currentInstruction.inst = Instructions::Jump;
+        else if (inst == "if") currentInstruction.inst = Instructions::If;
+        else if (inst == "equal") currentInstruction.inst = Instructions::Equal;
+        else if (inst == "inequal") currentInstruction.inst = Instructions::Inequal;
+        else if (inst == "greater") currentInstruction.inst = Instructions::Greater;
+        else if (inst == "lesser") currentInstruction.inst = Instructions::Lesser;
+        else if (inst == "not") currentInstruction.inst = Instructions::Not;
+        else if (inst == "setlist") currentInstruction.inst = Instructions::Setlist;
+        else if (inst == "getlistat") currentInstruction.inst = Instructions::Getlistat;
+        else if (inst == "setlistat") currentInstruction.inst = Instructions::Setlistat;
+        else if (inst == "getlistsize") currentInstruction.inst = Instructions::Getlistsize;
+        else if (inst == "stoi") currentInstruction.inst = Instructions::Stoi;
+        else if (inst == "stod") currentInstruction.inst = Instructions::Stod;
+        else if (inst == "tostring") currentInstruction.inst = Instructions::Tostring;
+        else if (inst == "fun") currentInstruction.inst = Instructions::Fun;
+        else if (inst == "return") currentInstruction.inst = Instructions::Return;
+        else if (inst == "endfun") currentInstruction.inst = Instructions::Endfun;
+        else if (inst == "pusharg") currentInstruction.inst = Instructions::Pusharg;
+        else if (inst == "call") currentInstruction.inst = Instructions::Call;
+        else if (inst == "use") currentInstruction.inst = Instructions::Use;
+        else if (inst == "extern") currentInstruction.inst = Instructions::Extern;
+        else if (inst == "getstrcharat") currentInstruction.inst = Instructions::Getstrcharat;
+        else if (inst == "getstrsize") currentInstruction.inst = Instructions::Getstrsize;
+        else if (inst == "error") currentInstruction.inst = Instructions::Error;
+        else if (inst == "catch") currentInstruction.inst = Instructions::Catch;
+        else if (inst == "try") currentInstruction.inst = Instructions::Try;
+        else if (inst == "exception") currentInstruction.inst = Instructions::Exception;
+        else if (inst == "gettype") currentInstruction.inst = Instructions::Gettype;
+        else if (inst == "exists") currentInstruction.inst = Instructions::Exists;
+        else if (inst == "listappend") currentInstruction.inst = Instructions::Listappend;
+        else if (inst == "listprepend") currentInstruction.inst = Instructions::Listprepend;
+        else if (inst == "struct") currentInstruction.inst = Instructions::Struct;
+        else if (inst == "endstruct") currentInstruction.inst = Instructions::Endstruct;
+        else if (inst == "init") currentInstruction.inst = Instructions::Init;
+        else {
+            error("Unknown instruction " + inst);
+        }
+
+        for (int i = 1; i < line.size(); i++) {
+            string arg = line[i];
+            Types type = getType(arg);
+            switch (type) {
+                case Types::Int:
+                    {
+                        Literal newLit;
+                        newLit.val = stoi(arg);
+                        currentInstruction.args.push_back(newLit);
+                    }
+                    break;
+                case Types::Double:
+                    {
+                        Literal newLit;
+                        newLit.val = stod(arg);
+                        currentInstruction.args.push_back(newLit);
+                    }
+                    break;
+                case Types::String:
+                    {
+                        Literal newLit;
+                        newLit.val = arg.substr(1, arg.size() - 2);
+                        currentInstruction.args.push_back(newLit);
+                    }
+                    break;
+                case Types::Char:
+                    {
+                        Literal newLit;
+                        newLit.val = arg[1];
+                        currentInstruction.args.push_back(newLit);
+                    }
+                    break;
+                case Types::Bool:
+                    {
+                        Literal newLit;
+                        if (arg == "true") newLit.val = true;
+                        else newLit.val = false;
+                        currentInstruction.args.push_back(newLit);
+                    }
+                    break;
+                case Types::Value:
+                    {
+                        ValueRef newVal;
+                        newVal.varName = arg.substr(1);
+                        currentInstruction.args.push_back(newVal);
+                    }
+                    break;
+                case Types::Direct:
+                    {
+                        Direct newDir;
+                        newDir.varName = arg.substr(1);
+                        currentInstruction.args.push_back(newDir);
+                    }
+                    break;
+                case Types::Line:
+                    {
+                        Line newLine;
+                        string lineRef = arg.substr(1);
+                        if (isInt(lineRef)) {
+                            newLine.lineNum = stoi(lineRef);
+                        } else {
+                            newLine.isLabel = true;
+                            newLine.label = lineRef;
+                        }
+                        currentInstruction.args.push_back(newLine);
+                    }
+                    break;
+                case Types::Type:
+                    {
+                        TypeRef newTypeRef;
+                        string type = arg.substr(1);
+                        if (type == "int") newTypeRef.type = Types::Int;
+                        else if (type == "double") newTypeRef.type = Types::Double;
+                        else if (type == "string") newTypeRef.type = Types::String;
+                        else if (type == "char") newTypeRef.type = Types::Char;
+                        else if (type == "bool") newTypeRef.type = Types::Bool;
+                        else if (type == "list") newTypeRef.type = Types::List;
+                        else {
+                            newTypeRef.isCustomType = true;
+                            newTypeRef.customType = type;
+                        };
+                        currentInstruction.args.push_back(newTypeRef);
+                    }
+                    break;
+                case Types::Function:
+                    {
+                        FunctionRef newFuncRef;
+                        newFuncRef.fnName = arg.substr(1);
+                        currentInstruction.args.push_back(newFuncRef);
+                    }
+                    break;
+                default:
+                    error("Could not parse argument " + arg);
+            }
+        }
+        out.push_back(currentInstruction);
+    }
+    return out;
+}

src/parser/parser.h

@@ -0,0 +1,7 @@
+#pragma once
+
+#include <vector>
+#include <string>
+#include "../main.h"
+
+std::vector<Instruction> parser(std::vector<std::vector<std::string>> in);

tests/args.grnd

@@ -0,0 +1,12 @@
+#!/usr/bin/env ground
+stdlnout "Program args: "
+getlistsize &args &argsSize
+set &counter 0
+@loopstart
+equal $counter $argsSize &bool
+if $bool %end
+getlistat &args $counter &item
+stdlnout $item
+add 1 $counter &counter
+jump %loopstart
+@end

tests/error.grnd

@@ -0,0 +1,23 @@
+fun -int !divten -int &divisor
+    divide 10 $divisor &out
+    # Skip the rest of the function because we have an error
+    println "aw yeag we devided by zero"
+    return $out
+endfun
+
+fun -string !wrapperFn -int &dingle
+    pusharg $dingle
+    !divten &result
+    # Skip the rest of the function because we have an error
+    println "big error incoming"
+    tostring $result &out
+    return $out
+endfun
+
+catch "divisionByZeroError" &success
+pusharg 0
+!wrapperFn &result
+
+# There's a catch in this scope, stop here and continue execution
+
+println $success

tests/everything.grnd

@@ -0,0 +1,89 @@
+# I/O
+
+stdlnout "Hello there!"
+stdout "What is your name? "
+stdin &name
+add "Hello, " $name &out
+stdlnout $out 
+
+# Types
+stdlnout "dingus"
+stdlnout 7
+stdlnout 3.14159
+stdlnout true
+stdlnout 'e'
+
+# Variables
+
+set &testVar "This is a test"
+stdlnout $testVar
+
+# Lists
+
+setlist &testList "Item 1" "Another Item" "Item the Third"
+getlistat &testList 2 &tmp
+stdlnout $tmp
+
+setlistat &testList 1 "I changed this item"
+getlistat &testList 1 &tmp
+stdlnout $tmp
+
+listappend &testList "I appended this item"
+getlistat &testList 3 &tmp
+stdlnout $tmp
+
+getlistsize &testList &tmp
+stdlnout $tmp
+
+# String Operations
+
+set &testStr "dingus"
+
+getstrsize $testStr &tmp
+stdlnout $tmp
+
+getstrcharat $testStr 3 &tmp
+stdlnout $tmp
+
+# Maths
+
+add 1 1 &tmp
+stdlnout $tmp
+
+subtract 10 5 &tmp
+stdlnout $tmp
+
+multiply 15 15 &tmp
+stdlnout $tmp
+
+divide 36 4 &tmp
+stdlnout $tmp
+
+# Comparisons
+
+equal 5 5 &tmp
+stdlnout $tmp
+
+inequal 5 5 &tmp
+stdlnout $tmp
+
+greater 10 5 &tmp
+stdlnout $tmp
+
+lesser 10 5 &tmp
+stdlnout $tmp
+
+# Control flow
+
+set &counter 0
+
+@myLabel
+add $counter 1 &counter
+stdlnout $counter
+inequal $counter 10 &case
+if $case %myLabel
+
+# That's it!
+
+stdlnout "Everything ran! Check the output to see if it is what is expected."
+end 0

tests/exists.grnd

@@ -0,0 +1,17 @@
+set &testVar "dingus"
+exists &testVar &exist
+stdlnout $exist
+
+setlist &myList "item"
+exists &myList &exist
+stdlnout $exist
+
+@dingus
+exists %dingus &exist
+stdlnout $exist
+
+exists &doesNotExist &exist
+stdlnout $exist
+
+exists %doesNotExist &exist
+stdlnout $exist

tests/functions.grnd

@@ -0,0 +1,49 @@
+fun -bool !jumpy
+    stdlnout "This is the jumpy function"
+    set &counter 0
+    jump %inloop
+    @jumpback
+    stdlnout "Yay I jumped!"
+    @inloop
+    add 1 $counter &counter
+    inequal 10 $counter &out
+    stdout "Condition is"
+    stdlnout $out
+    if $out %jumpback
+    stdlnout "Finished"
+    return true
+endfun
+
+!jumpy &tmp
+
+stdlnout "I called a function"
+
+# This function returns a list
+
+fun -list !dingus
+    stdlnout "Testing lists in functions"
+    setlist &dingle "heheheha" "hahahahe" "hmmm"
+    return $dingle
+endfun
+
+call !dingus &outlist
+
+getlistsize &outlist &size
+set &counter 0
+@loopstart
+equal $size $counter &cond
+if $cond %loopend
+getlistat &outlist $counter &tmp
+stdlnout $tmp
+add 1 $counter &counter
+jump %loopstart
+@loopend
+
+fun -int !doSomething -int &a -string &b
+    println $a
+    println $b
+    return 0
+endfun
+
+pusharg 432 "dingle"
+!doSomething &ret

tests/gettype.grnd

@@ -0,0 +1,5 @@
+set &myVar "dingus"
+
+gettype $myVar &type
+
+stdlnout $type

tests/input.grnd

@@ -1,7 +1,9 @@
+@begin
 stdout "Do you like cheese? "
 stdin &userin
 equal $userin "yes" &condition
-if $condition %7
+if $condition %end
 stdlnout "That is sad"
-jump %1
+jump %begin
+@end
 stdlnout "Awesome! I do too!"

tests/lists.grnd

@@ -0,0 +1,14 @@
+# A cool list
+setlist &favWords "hello" "there" "general" "kenobi"
+stdlnout $favWords
+
+set &count 0
+set &passedThrough true
+
+@jmpbck
+getlistat &favWords $count &tmp
+stdlnout $tmp
+add $count 1 &count
+getlistsize &favWords &tmp2
+inequal $count $tmp2 &tmp3
+if $tmp3 %jmpbck

tests/struct.grnd

@@ -0,0 +1,29 @@
+struct -point
+    init &xpos -int
+    init &ypos -int
+
+    fun -int !init -int &x -int &y
+        set &xpos $x
+        set &ypos $y
+        return 0
+    endfun
+
+    fun -string !toString
+        tostring $xpos &xposstr
+        tostring $ypos &yposstr
+        add "x: " $xposstr &str
+        add $str ", y: " &str
+        add $str $yposstr &str
+        return $str
+    endfun
+endstruct
+
+init &myPoint -point
+
+pusharg 30 15
+!myPoint.init &out
+println $myPoint.xpos
+
+!myPoint.toString &out
+
+println $out

tests/to1000.grnd

@@ -1,5 +1,6 @@
 set &var 0
+@jump
 add 1 $var &var
 stdlnout $var
-greater 1000 $var &cond
-if $cond %2
+greater 10000 $var &cond
+if $cond %jump

tests/typeconvs.grnd

@@ -0,0 +1,10 @@
+stod "3.14" &out
+stdlnout $out
+
+stoi "732" &out
+add 1 $out &out
+stdlnout $out
+
+tostring 3.14 &out
+add $out " is a number of sorts" &out
+stdlnout $out

tests/use/library.grnd

@@ -0,0 +1,3 @@
+fun -string !dingus
+return "Hello from the library"
+endfun

tests/use/use.grnd

@@ -0,0 +1,5 @@
+use "library"
+
+call !library:dingus &var
+
+stdlnout $var