Comment the code for ShrubBoi.

classes.js

@@ -1,7 +1,9 @@
+// This is the most basic type of token.
 var token = function (type, value) {
 	this.type = type;
 	this.value = value;
 };
+// This is a group of tokens.
 var group = function (type, tokens) {
     this.type = "Group";
     this.value = type;

parser.js

@@ -1,8 +1,15 @@
+// Import the group class.
 const group = require("./classes.js").group;
+
+// Create the parser function.
+// parse() takes an array of tokens in, and outputs an
+// Abstract Syntax Tree (a structured array of tokens).
 module.exports = tokens => {
+	// Variables for later.
 	var layer = 0;
     var delimiterCount = 0;
     var deepestLayer = 0;
+	// Give each token a layer number based on delimiters.
 	for (var i = 0; i < tokens.length; i++) {
 		if (tokens[i].type == "Left Delimiter") {
             layer++;
@@ -16,6 +23,7 @@ module.exports = tokens => {
 			layer--;
 		}
     }
+	// Lower the layer of delimiters.
 	for (var i = 0; i < tokens.length; i++) {
 		if ((tokens[i].type == "Left Delimiter") || (tokens[i].type == "Right Delimiter")) {
             tokens[i].layer--;
@@ -24,7 +32,9 @@ module.exports = tokens => {
 	if (layer > 0) { // Unclosed delimiter.
 	} else if (layer < 0) { // Overclosed delimiter.
 	}
+	// Reset layer for structuring.
     layer = 0;
+	/* - - - DO NOT TOUCH THIS - - - */
     for(var i=deepestLayer;i>=0;i--) {
         var temp = [];
         var firstIndex;
@@ -43,5 +53,7 @@ module.exports = tokens => {
             }
         }
     }
+	/* - - - OK YOU CAN TOUCH AGAIN - - - */
+	// Return the structured tokens.
 	return tokens;
 };

test.pivot

@@ -1,5 +1,6 @@
-x = 4
+// Example Pivot code.
-y = 3 * x
+// This is a comment.
-asdf = (a) {return(a++)}
+x = 4 // This creates a variable x with the value of 4.
-a = asdf(2)
+y = 3 * x // This creates a variable y with the value of the output of (3 * x).
-log(asdf(a(x,0)))
+asdf = (a) {return(a++)} // This creates a function asdf that takes a number and returns that number + 1/
+a = asdf(2) // This creates a variable a with the value of the output of asdf(2).

tokenizer.js

@@ -1,5 +1,10 @@
+// Import the token class.
 const token = require("./classes.js").token;
+
+// Create the tokenizer function.
+// tokenize() takes Pivot code in, and outputs an array of tokens.
 module.exports =  exp => {
+	// Check functions for different token types.
 	var isDigit = char => {
 		return /\d/.test(char);
 	};
@@ -21,16 +26,17 @@ module.exports =  exp => {
 	var isPeriod = char => {
 		return (char === ".");
 	};
-	var result = [];
+	var result = []; // The final array of tokens.
-	var nb = [];
+	var nb = []; // Number buffer. Allows for multiple digits to be one number.
-	var lb = [];
+	var lb = []; // Letter buffer. Allows for multiple letters to be one variable / function.
-	var ob = [];
+	var ob = []; // Operator buffer. Allows for multi-character operators. E.g. ++ or ==.
-	var sb = [];
+	var sb = []; // String buffer. Allows for multi-character strings.
-	var inString = false;
+	var inString = false; // Keep track of whether in string or not.
-	var stringType;
+	var stringType; // Keep track of what type of string. E.g. "" or ''.
-	exp = exp.split("");
+	exp = exp.split(""); // Split the expression into an array of characters.
-	for (var i = 0; i < exp.length; i++) {
+	/* - - - DO NOT TOUCH THIS - - - */
-		var char = exp[i];
+	for (var i = 0; i < exp.length; i++) { // Loop through all of the characters.
+		var char = exp[i]; // Create a quick reference to the current char.
 		if (i >= 1) {
 			if (exp[i - 1] == "\\") {
 				exp.splice(i - 1, 2, `\\${char}`);
@@ -44,6 +50,8 @@ module.exports =  exp => {
 			}
 		}
 	}
+	/* - - - OK YOU CAN TOUCH AGAIN - - - */
+	// Nevermind, just don't mess with any of this file.
 	for (var i = 0; i < exp.length; i++) {
 		var char = exp[i];
 		if (inString) {