diff --git a/ast.json b/ast.json
new file mode 100644
index 0000000..880d2a2
--- /dev/null
+++ b/ast.json
@@ -0,0 +1,53 @@
+[
+    {
+        "type": "Variable",
+        "value": "asdf",
+        "layer": 0
+    },
+    {
+        "type": "Operator",
+        "value": "=",
+        "layer": 0
+    },
+    {
+        "type": "Group",
+        "value": "a",
+        "tokens": [
+            {
+                "type": "Variable",
+                "value": "a",
+                "layer": 1
+            }
+        ],
+        "layer": 0
+    },
+    {
+        "type": "Left Delimiter",
+        "value": "{",
+        "layer": 0
+    },
+    {
+        "type": "Group",
+        "value": "a",
+        "tokens": [
+            {
+                "type": "Group",
+                "value": "a",
+                "tokens": [
+                    {
+                        "type": "Variable",
+                        "value": "a",
+                        "layer": 2
+                    },
+                    {
+                        "type": "Operator",
+                        "value": "++",
+                        "layer": 2
+                    }
+                ],
+                "layer": 1
+            }
+        ],
+        "layer": 0
+    }
+]
\ No newline at end of file
diff --git a/pivot.js b/pivot.js
new file mode 100644
index 0000000..a4bc40e
--- /dev/null
+++ b/pivot.js
@@ -0,0 +1,228 @@
+var token = function (type, value) {
+	this.type = type;
+	this.value = value;
+};
+var group = function (type, tokens) {
+    this.type = "Group";
+    this.value = type;
+    this.tokens;
+    if(typeof tokens != "undefined") {
+        this.tokens = tokens;
+    } else {
+        this.tokens = [];
+    }
+}
+var tokenize = exp => {
+	var isDigit = char => {
+		return /\d/.test(char);
+	};
+	var isLetter = char => {
+		return /[a-z]/i.test(char);
+	};
+	var isOperator = char => {
+		return /\+|-|\*|\/|\^|=/.test(char);
+	};
+	var isLeftDelimiter = char => {
+		return (/\(|\[|\{|"|'|`/.test(char));
+	};
+	var isRightDelimiter = char => {
+		return (/\)|\]|\}/.test(char));
+	};
+	var isComma = char => {
+		return (char === ",");
+	};
+	var isPeriod = char => {
+		return (char === ".");
+	};
+	var result = [];
+	var nb = [];
+	var lb = [];
+	var ob = [];
+	var sb = [];
+	var inString = false;
+	var stringType;
+	exp = exp.split("");
+	for (var i = 0; i < exp.length; i++) {
+		var char = exp[i];
+		if (i >= 1) {
+			if (exp[i - 1] == "\\") {
+				exp.splice(i - 1, 2, `\\${char}`);
+				i--;
+				continue;
+			}
+			if (exp[i - 1] == "$" && char == "{") {
+				exp.splice(i - 1, 2, `\${`);
+				i--;
+				continue;
+			}
+		}
+	}
+	for (var i = 0; i < exp.length; i++) {
+		var char = exp[i];
+		if (inString) {
+			if (char == `'` || char == `"` || char == "`") {
+				var exitString = () => {
+					inString = false;
+					if (sb.length == 0) {
+						result.push(new token("String", null));
+					} else {
+						var string = sb.join("");
+						result.push(new token("String", string));
+					}
+					sb = [];
+				};
+				if (char == `'` && stringType == "single") {
+					exitString();
+				} else if (char == `"` && stringType == "double") {
+					exitString();
+				} else if (char == "`" && stringType == "backtick") {
+					exitString();
+				} else {
+					if (char == `'`) {
+						sb.push(`\'`);
+					}
+					if (char == `"`) {
+						sb.push(`\"`);
+					}
+					if (char == "`") {
+						sb.push("\`");
+					}
+				}
+			} else {
+				sb.push(char);
+			}
+		} else {
+			if (isDigit(char)) {
+				result.push(new token("Operator", ob.join("")));
+				ob = [];
+				nb.push(char);
+			} else if (isLetter(char)) {
+				result.push(new token("Operator", ob.join("")));
+				ob = [];
+				lb.push(char);
+			} else if (isOperator(char)) {
+				result.push(new token("Number", nb.join("")));
+				nb = [];
+				result.push(new token("Variable", lb.join("")));
+				lb = [];
+				ob.push(char);
+			} else if (isLeftDelimiter(char)) {
+				result.push(new token("Operator", ob.join("")));
+				ob = [];
+				result.push(new token("Function Call", lb.join("")));
+				lb = [];
+				if (char == `'` || char == `"` || char == "`") {
+					inString = true;
+					if (char == `'`) {
+						stringType = "single";
+					} else if (char == `"`) {
+						stringType = "double";
+					} else if (char == "`") {
+						stringType = "backtick";
+					}
+				} else {
+					result.push(new token("Left Delimiter", char));
+				}
+			} else if (isRightDelimiter(char)) {
+				result.push(new token("Operator", ob.join("")));
+				ob = [];
+				result.push(new token("Number", nb.join("")));
+				nb = [];
+				result.push(new token("Variable", lb.join("")));
+				lb = [];
+				result.push(new token("Right Delimiter", char));
+			} else if (isComma(char)) {
+				result.push(new token("Operator", ob.join("")));
+				ob = [];
+				result.push(new token("Number", nb.join("")));
+				nb = [];
+				result.push(new token("Variable", lb.join("")));
+				lb = [];
+				result.push(new token("Comma", char));
+			} else if (isPeriod(char)) {
+				result.push(new token("Operator", ob.join("")));
+				ob = [];
+				nb.push(char);
+			}
+		}
+	}
+	result.push(new token("Operator", ob.join("")));
+	ob = [];
+	result.push(new token("Number", nb.join("")));
+	nb = [];
+	lb.forEach(item => {
+		result.push(new token("Variable", item));
+	});
+	lb = [];
+	for (var i = 0; i < 3; i++) {
+		result.forEach((item, index) => {
+			if (item.value == "") {
+				result.splice(index, 1);
+			}
+		});
+	}
+	result.forEach((item, index) => {
+		if (item.value == "-" && index != 0) {
+			if (result[index - 1].type != "Variable" && result[index - 1].type != "Number") {
+				if (result[index + 1].type == "Number") {
+					result[index + 1].value = "-" + result[index + 1].value;
+					result.splice(index, 1);
+				}
+			}
+		}
+	});
+	return result;
+};
+var parse = tokens => {
+	var layer = 0;
+    var delimiterCount = 0;
+    var deepestLayer = 0;
+	for (var i = 0; i < tokens.length; i++) {
+		if (tokens[i].type == "Left Delimiter") {
+            layer++;
+            if(layer > deepestLayer) {
+                deepestLayer = layer;
+            }
+			delimiterCount++;
+		}
+		tokens[i].layer = layer;
+		if (tokens[i].type == "Right Delimiter") {
+			layer--;
+		}
+    }
+	for (var i = 0; i < tokens.length; i++) {
+		if ((tokens[i].type == "Left Delimiter") || (tokens[i].type == "Right Delimiter")) {
+            tokens[i].layer--;
+		}
+	}
+	if (layer > 0) { // Unclosed delimiter
+	} else if (layer < 0) { // Overclosed delimiter
+	}
+    layer = 0;
+    for(var i=deepestLayer;i>=0;i--) {
+        var temp = [];
+        var firstIndex;
+        for(var j=0;j<tokens.length;j++) {
+            console.log(i);
+            console.log(temp);
+            console.log(tokens);
+            console.log();
+            if(tokens[j].layer == i) {
+                if(temp.length <= 0) {
+                    firstIndex = j;
+                }
+                temp.push(tokens[j]);
+            } else {
+                if(temp.length > 0) {
+                    var g = new group(tokens[firstIndex].value,temp);
+                    tokens.splice(firstIndex-1,temp.length+2,g);
+                    temp = [];
+                }
+            }
+        }
+    }
+	return tokens;
+};
+var fs = require("fs");
+var ast = parse(tokenize(`asdf = (a) {return(a++)}`));
+fs.writeFileSync("ast.json", JSON.stringify(ast, null, 4));
\ No newline at end of file
diff --git a/rpn.js b/rpn.js
new file mode 100644
index 0000000..cf84d8d
--- /dev/null
+++ b/rpn.js
@@ -0,0 +1,40 @@
+var solve = (exp) => {
+    var stack = [];
+    var expression = exp.split(" ");
+    for(var j=0;j<expression.length;j++) {
+        var key = expression[j];
+        if(key.match(/\d/)) {
+            stack.push(parseInt(key));
+        } else if(key.match(/\w/)) {
+            if(Object.keys(progData).includes(key)) {
+                stack.push(progData[key]);
+            } else {
+                stack.push(key);
+            }
+        }
+        switch(key) {
+            case "+": // add
+                var opItems = stack.splice(stack.length-2,2);
+                var result = opItems[0]+opItems[1];
+                stack.push(result);
+            break;
+            case "-": // subtract
+                var opItems = stack.splice(stack.length-2,2);
+                var result = opItems[0]-opItems[1];
+                stack.push(result);
+            break;
+            case "*": // multiply
+                var opItems = stack.splice(stack.length-2,2);
+                var result = opItems[0]*opItems[1];
+                stack.push(result);
+            break;
+            case "/": // divide
+                var opItems = stack.splice(stack.length-2,2);
+                var result = opItems[0]/opItems[1];
+                stack.push(result);
+            break;
+        }
+    }
+    return stack;
+};
+module.exports = solve;
\ No newline at end of file
diff --git a/test.pivot b/test.pivot
new file mode 100644
index 0000000..b2d039c
--- /dev/null
+++ b/test.pivot
@@ -0,0 +1,5 @@
+x = 4
+y = 3 * x
+asdf = (a) {return(a++)}
+a = asdf(2)
+log(asdf(a(x,0)))
\ No newline at end of file