Merge pull request #2 from Kjarrigan/add-first-real-code-sample

Add the first real working script

README.md

@@ -1,2 +1,14 @@
 [![](http://github-actions.40ants.com/Flipez/rocket-lang/matrix.svg)](https://github.com/Flipez/rocket-lang)
-[![Test](https://github.com/Flipez/rocket-lang/actions/workflows/go-test.yml/badge.svg)](https://github.com/Flipez/rocket-lang/actions/workflows/go-test.yml)
+[![Test](https://github.com/Flipez/rocket-lang/actions/workflows/go-test.yml/badge.svg)](https://github.com/Flipez/rocket-lang/actions/workflows/go-test.yml)
+
+# General
+
+RocketLang as of version 0.9.5 is the _full_ (as in the book was worked through) version of [MonkeyLang](https://monkeylang.org/) 
+
+## How To?
+
+* Download & Install a Version from the Release-Page
+* `rocket-lang` without any arguments will start an interactive shell
+* `rocket-lang FILE` will run the code in that file (no file extension check yet)
+* Use _Javascript_ Highlighting in your editor for some convenience
+* Checkout Code [Samples](examples/) for what is currently possible (and what not)

examples/aoc2015_day1.rl

@@ -0,0 +1,67 @@
+"// A solution for part 1 of https://adventofcode.com/2015/day/1"
+"// Last Updated: 2021.09.28"
+"// RocketLang Version: 0.9.6-rc1"
+"------------------------------------"
+
+let part_one = fn(input) {  
+  let floor = 0
+  let idx = len(input)
+
+  "// There are no loops at the moment so use recursion instead"
+  calc(input, idx, floor)
+}
+
+let calc = fn(input,idx,floor) {
+  let char_to_value = {
+    "(": 1,
+    ")": -1
+  }
+
+  if (idx == 0) {
+    return floor
+  }
+
+  let new_idx = idx - 1
+  let delta = char_to_value[input[new_idx]]
+
+  calc(input, new_idx, floor + delta)
+}
+
+"// Test some inputs to check that our code is correct..."
+if (part_one(["(", "(", ")", ")"]) != 0) {
+  puts("Assertion ((( => 0 failed")
+}
+
+"// ... for multiple known results."
+if (part_one([")","(",")",")","(",")",")"]) != -3) {
+  puts("Assertion )())()) => -3 failed")
+}
+
+"// There aren't any usefull string operations in RocketLang yet so you have to prepare"
+"// the input code a bit - in this case as an array of strings, like this:"
+let real_input = [
+  "(",")","(",")","(","(",")","(",")","(",")","(","(",")","(",")","(","(","(",")","(","(","(",")",")",
+  ")","(","(","(",")","(","(","(","(","(",")","(",")","(","(","(","(","(",")",")",")","(",")","(","(",
+  "(","(","(",")",")","(","(","(","(","(","(","(","(",")","(","(","(","(","(","(","(","(","(","(",")",
+  "(","(","(","(",")",")","(","(",")","(",")","(","(",")","(","(","(",")","(",")","(","(",")","(","(",
+  ")",")","(","(",")","(","(","(","(","(",")","(","(","(",")","(",")","(",")","(","(","(","(","(",")",
+  ")","(","(","(","(","(","(","(",")","(","(",")","(","(","(","(",")","(",")",")","(","(",")","(","(",
+  "(","(","(",")",")",")","(",")",")","(","(",")",")","(","(",")","(","(",")","(",")",")",")",")",")",
+  ")",")",")",")","(","(","(","(","(","(","(","(","(","(","(","(","(",")","(",")",")","(",")","(",")",
+  ")","(",")",")","(","(",")",")",")",")","(","(","(","(",")","(",")","(",")","(","(","(","(","(",")",
+  "(","(","(","(",")","(","(",")","(","(",")","(",")","(","(",")","(","(",")","(",")","(","(",")","(",
+  "(","(","(","(","(","(","(",")",")","(","(",")",")","(","(",")",")","(",")",")",")",")","(","(","(",
+  ")","(",")",")","(",")","(","(","(","(","(",")","(",")","(","(","(",")",")",")","(","(","(","(",")",
+  "(",")","(",")","(",")",")",")",")","(","(",")",")",")",")","(","(","(","(","(",")",")","(","(","(",
+  "(",")","(",")",")","(","(",")",")","(","(",")",")",")","(","(",")","(","(","(","(","(",")","(",")",
+  ")",")",")","(",")",")","(","(","(",")","(","(",")",")","(","(","(","(",")","(","(","(","(","(",")",
+  "(","(","(",")","(","(",")",")","(",")",")",")",")","(","(","(",")",")",")","(",")","(",")","(","(",
+  ")","(","(",")",")",")",")",")","(","(","(","(","(","(","(","(","(",")","(",")",")","(","(","(","(",
+  "(",")","(",")","(","(","(","(","(",")","(","(",")","(",")",")","(","(","(","(","(","(",")","(","(",
+  ")","(",")",")","(",")",")",")","(",")",")","(","(","(","(",")",")",")","(",")","(","(",")","(","(",
+  ")","(","(",")","(","(","(","(","(",")","(","(",")",")","(","(",")",")",")","(","(","(","(","(","(",
+  ")","(",")","(","(",")","(",")","(",")","(","(",")","(","(","(","(",")",")","(",")",")","(","(","("
+]
+
+puts("Solution Day 1 Part 1: ")
+puts(part_one(real_input))