From 9c84e3365661387be283ca528cea1650ea46ae1f Mon Sep 17 00:00:00 2001
From: Michael Williamson <mike@zwobble.org>
Date: Thu, 23 Apr 2026 11:27:29 +0100
Subject: Tokenize field keyword

---
 .../org/zwobble/hobgoblin/compiler/parser/TokenType.java   |  1 +
 .../org/zwobble/hobgoblin/compiler/parser/Tokenizer.java   |  4 +++-
 .../zwobble/hobgoblin/compiler/parser/TokenizerTests.java  | 14 +++++++++++---
 3 files changed, 15 insertions(+), 4 deletions(-)

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 72b1e88..64be2d4 100644
--- a/src/main/java/org/zwobble/hobgoblin/compiler/parser/TokenType.java
+++ b/src/main/java/org/zwobble/hobgoblin/compiler/parser/TokenType.java
@@ -5,6 +5,7 @@ enum TokenType {
     IDENTIFIER,
     WHITESPACE,
 
+    KEYWORD_FIELD,
     KEYWORD_STRUCT,
 
     SYMBOL_BRACE_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 c628346..6a43a09 100644
--- a/src/main/java/org/zwobble/hobgoblin/compiler/parser/Tokenizer.java
+++ b/src/main/java/org/zwobble/hobgoblin/compiler/parser/Tokenizer.java
@@ -84,7 +84,9 @@ class Tokenizer {
 
         var sourceRange = start.to(end);
         TokenType tokenType;
-        if (CharSequence.compare(sourceRange.charSequence(), "struct") == 0) {
+        if (CharSequence.compare(sourceRange.charSequence(), "field") == 0) {
+            tokenType = TokenType.KEYWORD_FIELD;
+        } else if (CharSequence.compare(sourceRange.charSequence(), "struct") == 0) {
             tokenType = TokenType.KEYWORD_STRUCT;
         } else {
             tokenType = TokenType.IDENTIFIER;
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 e564e7b..68db18d 100644
--- a/src/test/java/org/zwobble/hobgoblin/compiler/parser/TokenizerTests.java
+++ b/src/test/java/org/zwobble/hobgoblin/compiler/parser/TokenizerTests.java
@@ -1,9 +1,6 @@
 package org.zwobble.hobgoblin.compiler.parser;
 
 import org.junit.jupiter.api.Test;
-import org.zwobble.hobgoblin.compiler.parser.Token;
-import org.zwobble.hobgoblin.compiler.parser.TokenType;
-import org.zwobble.hobgoblin.compiler.parser.Tokenizer;
 import org.zwobble.sourcetext.SourceRange;
 import org.zwobble.sourcetext.SourceText;
 
@@ -21,6 +18,17 @@ public class TokenizerTests {
         assertThat(tokens.tokens(), isSequence());
     }
 
+    @Test
+    public void keywordFieldIsTokenized() {
+        var sourceText = SourceText.fromString("<string>", "field");
+
+        var tokens = Tokenizer.tokenize(sourceText);
+
+        assertThat(tokens.tokens(), isSequence(
+            equalTo(new Token(TokenType.KEYWORD_FIELD, sourceRange(sourceText, 0, 5)))
+        ));
+    }
+
     @Test
     public void keywordStructIsTokenized() {
         var sourceText = SourceText.fromString("<string>", "struct");
-- 
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