diff --git a/lib/Scope/Exception.php b/lib/Scope/Exception.php
index 41d7f36..930b1cb 100644
--- a/lib/Scope/Exception.php
+++ b/lib/Scope/Exception.php
@@ -9,23 +9,25 @@ namespace dW\Highlighter\Scope;
 class Exception extends \Exception {
     const MESSAGE = '%s expected; found %s';
 
-    public function __construct(string $expected, string|bool $found) {
-        $strlen = strlen($expected);
-        if ($strlen > 1) {
-            $temp = [];
-            for ($i = 0; $i < $strlen; $i++) {
-                $temp[] = ($expected[$i] !== false) ? "\"{$expected[$i]}\"" : 'end of input';
-            }
-            $expected = $temp;
-
-            if (count($expected) > 2) {
-                $last = array_pop($expected);
-                $expected = implode(', ', $expected) . ', or ' . $last;
+    public function __construct(array|string $expected, string|bool $found) {
+        if (!is_string($expected)) {
+            $expectedLen = count($expected);
+            if ($expectedLen === 1) {
+                $expected = ($expected[0] !== false) ? $expected[0] : 'end of input';
             } else {
-                $expected = implode(' or ', $expected);
+                $temp = [];
+                for ($i = 0; $i < $strlen; $i++) {
+                    $temp[] = ($expected[$i] !== false) ? "{$expected[$i]}" : 'end of input';
+                }
+                $expected = $temp;
+
+                if ($expectedLen > 2) {
+                    $last = array_pop($expected);
+                    $expected = implode(', ', $expected) . ', or ' . $last;
+                } else {
+                    $expected = implode(' or ', $expected);
+                }
             }
-        } else {
-            $expected = ($expected !== false) ? "\"$expected\"" : 'end of input';
         }
 
         $found = ($found !== false) ? "\"$found\"" : 'end of input';
diff --git a/lib/Scope/Matchers/GroupMatcher.php b/lib/Scope/Matchers/GroupMatcher.php
index f7a9105..5e28e83 100644
--- a/lib/Scope/Matchers/GroupMatcher.php
+++ b/lib/Scope/Matchers/GroupMatcher.php
@@ -10,8 +10,8 @@ class GroupMatcher extends Matcher {
     protected string|null $prefix;
     protected Matcher $selector;
 
-    public function __construct(string $prefix, Matcher $selector) {
-        $this->prefix = $prefix[0];
+    public function __construct(string|null $prefix, Matcher $selector) {
+        $this->prefix = ($prefix !== null) ? $prefix[0] : null;
         $this->selector = $selector;
     }
 
diff --git a/lib/Scope/Matchers/PathMatcher.php b/lib/Scope/Matchers/PathMatcher.php
index a72231a..7f6763b 100644
--- a/lib/Scope/Matchers/PathMatcher.php
+++ b/lib/Scope/Matchers/PathMatcher.php
@@ -10,8 +10,8 @@ class PathMatcher extends Matcher {
     protected string|null $prefix;
     protected array $matchers;
 
-    public function __construct(string $prefix, ScopeMatcher ...$matchers) {
-        $this->prefix = $prefix[0];
+    public function __construct(string|null $prefix, ScopeMatcher ...$matchers) {
+        $this->prefix = ($prefix !== null) ? $prefix[0] : null;
         $this->matchers = $matchers;
     }
 
diff --git a/lib/Scope/Parser.php b/lib/Scope/Parser.php
index 2e393b7..c75c26d 100644
--- a/lib/Scope/Parser.php
+++ b/lib/Scope/Parser.php
@@ -86,10 +86,8 @@ class Parser {
             $result = self::parseGroup($prefix);
         } elseif (preg_match(self::SCOPE_REGEX, $peek)) {
             $result = self::parsePath($prefix);
-        } elseif ($peek !== false) {
-            die('Group or path expected.');
         } else {
-            die('Unexpected eod');
+            throw new Exception([ 'Instance of ' . __NAMESPACE__ . 'GroupMatcher', 'Instance of ' . __NAMESPACE__ . 'PathMatcher' ], $peek);
         }
 
         if (self::$debug) {
@@ -107,7 +105,7 @@ class Parser {
         $result = self::parseSelector();
         $token = self::$instance->data->consume();
         if ($token !== ')') {
-            die(($token !== false) ? 'Close parenthesis expected' : 'Unexpected eod');
+            throw new Exception(')', $token);
         }
 
         $result = ($prefix === null) ? $result : new GroupMatcher($prefix, $result);
@@ -126,7 +124,6 @@ class Parser {
 
         $result = [];
         $result[] = self::parseScope();
-        die(var_export($result));
 
         $peek = self::$instance->data->peek();
         while (!in_array($peek, [ '-', false ]) && preg_match(self::SCOPE_REGEX, $peek)) {
@@ -173,10 +170,9 @@ class Parser {
         }
 
         $token = self::$instance->data->consume();
-        if ($token === false) {
-            die('Unexpected eod');
-        } elseif (!preg_match('/^(?:[A-Za-z0-9-_]+|\*)(?:\.(?:[A-Za-z0-9-+_]+|\*))*$/S', $token)) {
-            die('Invalid scope');
+        if ($token === false || !preg_match('/^(?:[A-Za-z0-9-_]+|\*)(?:\.(?:[A-Za-z0-9-+_]+|\*))*$/S', $token)) {
+            // TODO: Take the effort to make this more descriptive
+            throw new Exception('valid scope syntax', $token);
         }
 
         $segments = explode('.', $token);