From a1d3da9e2c2e0526a2d004cda035e761626b2f85 Mon Sep 17 00:00:00 2001
From: Michael Williamson <mike@zwobble.org>
Date: Fri, 6 Nov 2026 15:16:20 +0000
Subject: Tokenize ==

---
 .../java/org/zwobble/hobgoblin/compiler/parser/TokenType.java |  1 +
 .../java/org/zwobble/hobgoblin/compiler/parser/Tokenizer.java |  4 ++++
 .../org/zwobble/hobgoblin/compiler/parser/TokenizerTests.java | 11 +++++++++++
 3 files changed, 16 insertions(+)

diff --git a/src/main/java/org/zwobble/hobgoblin/compiler/parser/TokenType.java b/src/main/java/org/zwobble/hobgoblin/compiler/parser/TokenType.java
index e38f3c7..12626cc 100644
--- a/src/main/java/org/zwobble/hobgoblin/compiler/parser/TokenType.java
+++ b/src/main/java/org/zwobble/hobgoblin/compiler/parser/TokenType.java
@@ -21,6 +21,7 @@ enum TokenType {
     SYMBOL_DOLLAR,
     SYMBOL_DOT,
     SYMBOL_DOT_DOT,
+    SYMBOL_EQUALS_EQUALS,
     SYMBOL_FAT_ARROW,
     SYMBOL_FORWARD_SLASH,
     SYMBOL_PAREN_OPEN,
diff --git a/src/main/java/org/zwobble/hobgoblin/compiler/parser/Tokenizer.java b/src/main/java/org/zwobble/hobgoblin/compiler/parser/Tokenizer.java
index 0b88b5c..63973a6 100644
--- a/src/main/java/org/zwobble/hobgoblin/compiler/parser/Tokenizer.java
+++ b/src/main/java/org/zwobble/hobgoblin/compiler/parser/Tokenizer.java
@@ -156,6 +156,10 @@ class Tokenizer {
             tokenType = TokenType.SYMBOL_FAT_ARROW;
             iterator.skip();
             iterator.skip();
+        } else if ("==".contentEquals(iterator.peekSequence(2))) {
+            tokenType = TokenType.SYMBOL_EQUALS_EQUALS;
+            iterator.skip();
+            iterator.skip();
         } else {
             switch (iterator.peek()) {
                 case '{':
diff --git a/src/test/java/org/zwobble/hobgoblin/compiler/parser/TokenizerTests.java b/src/test/java/org/zwobble/hobgoblin/compiler/parser/TokenizerTests.java
index 86fb1f9..1e7025d 100644
--- a/src/test/java/org/zwobble/hobgoblin/compiler/parser/TokenizerTests.java
+++ b/src/test/java/org/zwobble/hobgoblin/compiler/parser/TokenizerTests.java
@@ -194,6 +194,17 @@ public class TokenizerTests {
         ));
     }
 
+    @Test
+    public void symbolEqualsEqualsIsTokenized() {
+        var sourceText = SourceText.fromString("<string>", "==");
+
+        var tokens = Tokenizer.tokenize(sourceText);
+
+        assertThat(tokens.tokens(), isSequence(
+            equalTo(new Token(TokenType.SYMBOL_EQUALS_EQUALS, sourceRange(sourceText, 0, 2)))
+        ));
+    }
+
     @Test
     public void symbolFatArrowIsTokenized() {
         var sourceText = SourceText.fromString("<string>", "=>");
-- 
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