started lexer

README.md

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+_ is a small embeddable scripting language
+
+_ is inspired by Javascript, Lox, Lua, Python, Rust and more
+
+# Reference
+
+## Overview
+
+Declaring variables using `let`
+
+```
+let hello = 4
+```
+
+Semicolons are not needed
+
+```
+let test = 5
+let another = 4
+```
+
+The language has strings, numbers, arrays, objects and null and booleans
+
+```
+let string = "hallo"
+let number = 4
+let array = []
+let object = {}
+let _null = null
+let bool = true
+```
+
+You access properties on objects using `.`
+
+```
+let obj = {}
+obj.hi = "hi!"
+```
+
+Functions are first class
+
+```
+let obj = {}
+obj.hello = helloFn
+obj.hello()
+```
+
+Functions are declared using `fn`
+
+```
+fn greet(name) {
+    return "hello, " + name
+}
+```
+
+Comments using `#`
+```
+# hi!
+```
+
+There are many native functions, that can easily be customized and added/removed by the host
+
+```
+# rocket game
+turnRocketLeft(29)
+turnRocketRight(32)
+
+# chat bot
+message.respond("hi")
+
+# dangerous http requests
+fn callback(html) {
+    print(html)
+}
+fetch("https://github.com/Nilstrieb", callback);
+```
+
+Basic arithmetic and boolean logic is available
+
+```
+let a = 5
+let b = 5
+print(a + b / b * b - a % b)
+print(true and false or false or true and false)
+```
+
+Loops and conditionals
+
+```
+let x = true
+if x {
+    print("true!")
+} else {
+    print("false :(")
+}
+
+loop {
+    while 1 > 5 {
+        print("yeet")
+        break
+    }
+    # no for loops for now, but will be added (probably like python)
+}
+```
+
+_ is dynamically and *strongly* typed
+
+## Detail
+
+### Reserved Keywords
+
+#### Statements
+`fn`
+`let`
+`if`
+`else`
+`loop`
+`while`
+`for`
+
+#### Values
+`true`
+`false`
+`null`
+
+#### Operators
+`not`
+`and`
+`or`
+
+### Operators
+`==`
+`>=`
+`>`
+`<=`
+`<`
+`!=`
+`+`
+`-`
+`*`
+`/`
+`%`