error/warning colors

compiler/src/prog8/CompilerMain.kt

@@ -136,14 +136,20 @@ fun main(args: Array<String>) {
         println("\nTotal compilation+assemble time: ${(endTime-startTime)/1000.0} sec.")
 
     } catch (px: ParsingFailedError) {
+        System.err.print("\u001b[91m")  // bright red
         System.err.println(px.message)
+        System.err.print("\u001b[0m")  // reset
         exitProcess(1)
     } catch (x: Exception) {
+        print("\u001b[91m")  // bright red
         println("\n* internal error *")
+        print("\u001b[0m")  // reset
         System.out.flush()
         throw x
     } catch (x: NotImplementedError) {
+        print("\u001b[91m")  // bright red
         println("\n* internal error: missing feature/code *")
+        print("\u001b[0m")  // reset
         System.out.flush()
         throw x
     }

compiler/src/prog8/ast/AstChecker.kt

@@ -20,6 +20,7 @@ fun Module.checkValid(globalNamespace: INameScope, compilerOptions: CompilationO
 
 fun printErrors(errors: List<Any>, moduleName: String) {
     val reportedMessages = mutableSetOf<String>()
+    print("\u001b[91m")  // bright red
     errors.forEach {
         val msg = it.toString()
         if(msg !in reportedMessages) {
@@ -27,17 +28,20 @@ fun printErrors(errors: List<Any>, moduleName: String) {
             reportedMessages.add(msg)
         }
     }
+    print("\u001b[0m")  // reset color
     if(reportedMessages.isNotEmpty())
         throw ParsingFailedError("There are ${reportedMessages.size} errors in module '$moduleName'.")
 }
 
 
 fun printWarning(msg: String, position: Position, detailInfo: String?=null) {
+    print("\u001b[93m")  // bright yellow
     print("$position Warning: $msg")
     if(detailInfo==null)
         print("\n")
     else
         println(": $detailInfo")
+    print("\u001b[0m")  // bright yellow
 }