Fixing up old stuff, cleaning up and standardizing AST.

LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/js/math/latex.js

@@ -103,7 +103,7 @@ function functionToLatex(f, args) {
  * @param {string} vari - variable to convert
  * @returns {string}
  */
-function variable(vari) {
+
 let unicodechars = ["α","β","γ","δ","ε","ζ","η",
                     "π","θ","κ","λ","μ","ξ","ρ",
                     "ς","σ","τ","φ","χ","ψ","ω",
@@ -124,6 +124,7 @@ function variable(vari) {
                     "{}^{7}","{}^{8}","{}^{9}","{}^{0}","{}_{1}","{}_{2}","{}_{3}",
                     "{}_{4}","{}_{5}","{}_{6}","{}_{7}","{}_{8}","{}_{9}","{}_{0}",
                         "\\pi"]
+function variable(vari) {
     for(let i = 0; i < unicodechars.length; i++) {
         //console.log(vari, unicodechars[i], equivalchars[i]);
         if(vari.includes(unicodechars[i]))

LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/js/parsing/builder.js

@@ -25,6 +25,7 @@
 class ExpressionBuilder {
     constructor(tokenizer) {
         this.tokenizer = tokenizer;
+        this.stack = []
     }
     
     parseExpression(delimitors = '') {

LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/js/parsing/reference.js

@@ -71,15 +71,15 @@ const FUNCTIONS_LIST = Object.keys(FUNCTIONS);
 // TODO: Complete
 const DERIVATIVES = {
     "abs": "abs(<1>)/<1>",
-    "acos": "-derivate(<1>)/sqrt(1-(<1>)^2)",
-    "acosh": "derivate(<1>)/sqrt((<1>)^2-1)",
-    "asin": "derivate(<1>)/sqrt(1-(<1>)^2)",
-    "asinh": "derivate(<1>)/sqrt((<1>)^2+1)",
-    "atan": "derivate(<1>)/(1+(<1>)^2)",
+    "acos": "-derivative(<1>)/sqrt(1-(<1>)^2)",
+    "acosh": "derivative(<1>)/sqrt((<1>)^2-1)",
+    "asin": "derivative(<1>)/sqrt(1-(<1>)^2)",
+    "asinh": "derivative(<1>)/sqrt((<1>)^2+1)",
+    "atan": "derivative(<1>)/(1+(<1>)^2)",
     "atan2": "",
 }
 const INTEGRALS = {
-    "abs": "integrate(<1>)*sign(<1>)",
+    "abs": "integral(<1>)*sign(<1>)",
     "acos": "",
     "acosh": "",
     "asin": "",