[READ-ONLY] Mirror of https://github.com/probablykasper/limp. Programming language made in JS, for fun (unfinished)
limp.kasper.space
language
Completely rewritten engine
Following this tutorial: http://lisperator.net/pltut/
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js/limp.js
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js/limp.js
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"use strict";
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var limpErrors = {
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"u01": "Invalid JavaScript data type passed to limp(). Expected string."
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}
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// var limpErrors = {
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// "u01": "Invalid JavaScript data type passed to limp(). Expected string."
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// }
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function limpLog(type, msg) {
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var html = document.createElement("div");
···
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}
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}
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function wordType(word) {
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var type;
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if ( /(^\d*$|^\d*\.\d+$)/.test(word) ) { // NUMBER, digit OR optional digit . digit
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type = "number";
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} else if (word == "true" || word == "false") { // BOOLEAN
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type = "boolean";
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} else if ( /^".*"$/.test(word) ) { // STRING, starts & ends with "
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type = "string";
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} else if ( /^[+\-*/%]$|^[+-]{2}$/.test(word) ) { // OPERATOR, + - * % ++ --
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type = "operator";
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} else if ( /^\$.*/.test(word) ) {
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type = "variable";
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} else { // OTHER
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type = "instruction";
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function limp(input) {
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var pos = 0, line = 1, col = 0;
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function currentChar(offset = 0) {
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return input.charAt(pos+offset);
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}
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return type;
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}
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function limp(script) {
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var words = script.trim().match( /[^\s"]+|"[^"]*"/g ); // trim & split into array where there is whitespace, except in quotes
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function jumpChar(offset = 1) {
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pos = pos+offset;
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}
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var currentWord, currentType;
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for (var wordIndex = 0; wordIndex < words.length; wordIndex++) { // loop through words array
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currentWord = words[wordIndex];
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currentType = wordType(currentWord);
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limpLog("inf", "["+currentType+"] "+currentWord);
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switch (currentType) {
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case "number":
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// do code...
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break;
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case "boolean":
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// do code...
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break;
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case "string":
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// do code...
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break;
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case "operator":
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switch (currentWord) {
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case "+":
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case "-":
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case "*":
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case "/":
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case "%":
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if ( wordType(words[wordIndex-1]) == "number" && wordType(words[wordIndex+1]) == "number" ) {
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limpLog("inf", eval(words[wordIndex-1]+currentWord+words[wordIndex+1]));
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} else {
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limpLog("err", "not number");
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}
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break;
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case "++":
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limpLog("inf", words[wordIndex-1]+1);
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break;
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case "--":
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limpLog("inf", words[wordIndex-1]-1);
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break;
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}
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break;
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case "variable":
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// do code...
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break;
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case "instruction":
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// do code...
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break;
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function jumpLine() {
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var nextNewline = input.indexOf("\n", currentChar());
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pos = nextNewline+1;
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}
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function isWhitespace(char) {
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return /^\s*$/.test(char);
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}
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function isDigit(char) {
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return /[0-9]/.test(char);
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}
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function readNumber() {
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var keepRunning = true, firstPeriod = true, number = "";
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while (keepRunning == true) {
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keepRunning = false;
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if ( isDigit(currentChar()) ) {
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keepRunning = true;
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} else if ( currentChar() == "." && firstPeriod == true && isDigit(currentChar(1)) ) {
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keepRunning = true;
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firstPeriod = false;
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}
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if (keepRunning) {
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number += currentChar();
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jumpChar(1);
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} else {
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jumpChar(-1);
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}
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}
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return number;
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}
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var nextWord = function() {
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if (wordIndex >= words.length) {
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return null;
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} else {
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return words[next++];
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function readNext() {
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if ( isWhitespace(currentChar()) ) {
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jumpChar();
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readNext();
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} else if (currentChar() == "/" && currentChar(1) == "/" ) {
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jumpLine();
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readNext();
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} else if (currentChar() == '"') {
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readString();
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jumpChar();
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readNext();
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} else if ( isDigit(currentChar()) ) {
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readNumber();
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jumpChar();
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readNext();
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}
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}
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readNext();
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}