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StackBasedLanguage/errors.md

@@ -0,0 +1,38 @@
+# All GRSBPL Error Messages
+
+## Syntax Errors
+
+- Any uncaught exception occurs during lexing:  
+  `Unknown Syntax Error. <exceptionname>: <exceptionmessage>`
+
+- Invalid character escaped:  
+  `Invalid escape sequence <escaped>`
+
+- Integer parse failed (can only happen because number is too big)  
+  `Value not an integer: <number>`
+
+## Runtime Errors
+
+- Label not found  
+  `Label '<name>' not found`
+
+- Function not found  
+  `Function '<name>' not found`
+
+- Stack empty on return  
+  `Function has to return some value, but no value was found on the stack`
+
+- Pop called on empty stack  
+  `Cannot pop empty stack`
+
+- No stack frame left after return  
+  `Tried to return outside of function, probably forgot to skip a function`
+
+- Stackoverflow - limit 1 000 000  
+  `Stackoverflow. Limit of <STACK_LIMIT> stack frames reached.`
+
+- Invalid token found  
+  `Excepted token '<name>' but found '<name>'`
+
+- Failed to read input from stdin  
+  `[VM] - Error reading input`

StackBasedLanguage/fizzbuzz.grsbpl

@@ -0,0 +1,9 @@
+10 factorial 1 goto exit
+
+function factorial 1
+dup not goto isZero
+pop dup 1 - factorial * return
+:isZero
+1 pop return
+
+:exit pop dup nout

StackBasedLanguage/pom.xml

@@ -25,6 +25,7 @@
     <properties>
         <maven.compiler.source>14</maven.compiler.source>
         <maven.compiler.target>14</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     </properties>
 
 </project>