From 34e7730d383349929e4edb7d1e83e6048fbd5016 Mon Sep 17 00:00:00 2001
From: Richard van Velzen <richard@frank.nl>
Date: Fri, 25 Mar 2022 14:01:39 +0100
Subject: [PATCH] Add fuzzy tests

---
 doc/grammars/type.abnf       | 5 ++++-
 src/Parser/TokenIterator.php | 2 +-
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/doc/grammars/type.abnf b/doc/grammars/type.abnf
index 2a864bf0..d76fba6d 100644
--- a/doc/grammars/type.abnf
+++ b/doc/grammars/type.abnf
@@ -3,7 +3,7 @@
 ; ---------------------------------------------------------------------------- ;
 
 Type
-	= Atomic [Union / Intersection]
+	= Atomic [Union / Intersection / Conditional]
 	/ Nullable
 
 Union
@@ -12,6 +12,9 @@ Union
 Intersection
 	= 1*(TokenIntersection Atomic)
 
+Conditional
+    = 1*ByteHorizontalWs "is" [1*ByteHorizontalWs "not"] 1*ByteHorizontalWs Atomic TokenNullable Atomic TokenColon Atomic
+
 Nullable
 	= TokenNullable TokenIdentifier [Generic]
 
diff --git a/src/Parser/TokenIterator.php b/src/Parser/TokenIterator.php
index 1e732237..7def070f 100644
--- a/src/Parser/TokenIterator.php
+++ b/src/Parser/TokenIterator.php
@@ -59,7 +59,7 @@ public function currentTokenOffset(): int
 
 	public function isCurrentTokenValue(string $tokenValue): bool
 	{
-		return $this->tokens[$this->index][Lexer::VALUE_OFFSET] === $tokenValue;
+		return strcasecmp($this->tokens[$this->index][Lexer::VALUE_OFFSET], $tokenValue) === 0;
 	}