Merge pull request #11 from viniciuslrangel/master

Fix #8 Parse negative numbers

Author: Stevertus

examples/scripts/forEach.mcscript

@@ -1,6 +1,6 @@
 #file: ./foreach
 # basic loop
-forEach(var i = 0; i < 10; i++){
+forEach(var i = -5; i < 5; i++){
     /say hey
 }
 

lib/index.js

@@ -113,7 +113,7 @@ function readFile(file, options = {}) {
                     let oldMess = err.message.split(" ")[0].substr(7);
                     err.message = err.message.split(" ").slice(1).join(" ");
                     console.log(consoletheme.FgRed, "[Debugger]", consoletheme.FgCyan, oldMess, consoletheme.FgWhite, err, consoletheme.Reset,);
-                } else if (!options.fullErr) console.log(consoletheme.FgRed, "[Error]", err.message, "\n\n " + file + " was not compiled!", consoletheme.Reset);
+                } else if (!options.fullErr) console.log(consoletheme.FgRed, "[Error]", err.message || err, "\n\n " + file + " was not compiled!", consoletheme.Reset);
                 else console.log(err);
             }
     });

lib/parser.js

@@ -695,6 +695,13 @@ function parse_atom() {
         return tok;
 
       }
+      if (tok.type == "op" && tok.value == "-") {
+        let num = input.next()
+        if(num.type != "num") {
+          unexpected()
+        }
+        tok = { type: "num", value: -num.value }
+      }
       if (tok.type == "num" || tok.type == "str") return tok;
 
       unexpected();