Combine binary operations into single Java AST node

12 files changed, 147 insertions, 210 deletions

diff --git a/hobgoblin/src/output/lang/java/ast.hob b/hobgoblin/src/output/lang/java/ast.hob
index 93d6da2..f380173 100644
--- a/hobgoblin/src/output/lang/java/ast.hob
+++ b/hobgoblin/src/output/lang/java/ast.hob
@@ -153,7 +153,7 @@ struct JavaReturn {
 // == Expressions ==
 
 sum JavaExpression {
-    variant JavaAssignment;
+    variant JavaBinaryOperation;
     variant JavaBooleanLiteral;
     variant JavaFieldAccess;
     variant JavaIntegerLiteral;
@@ -165,14 +165,19 @@ sum JavaExpression {
     variant JavaStaticFieldAccess;
     variant JavaStaticMethodCall;
     variant JavaStringLiteral;
-    variant JavaUnsignedRightShift;
 }
 
-struct JavaAssignment {
+struct JavaBinaryOperation {
+    field operator: JavaBinaryOperator;
     field left: JavaExpression;
     field right: JavaExpression;
 }
 
+enum JavaBinaryOperator {
+    variant assign;
+    variant unsignedRightShift;
+}
+
 struct JavaBooleanLiteral {
     field value: Bool;
 }
@@ -224,11 +229,6 @@ struct JavaStringLiteral {
     field value: String;
 }
 
-struct JavaUnsignedRightShift {
-    field left: JavaExpression;
-    field right: JavaExpression;
-}
-
 // == Identifiers ==
 
 struct JavaIdentifier {
diff --git a/src/main/java/org/zwobble/hobgoblin/compiler/output/generators/javapreciselymatchers/JavaPreciselyMatchersGenerator.java b/src/main/java/org/zwobble/hobgoblin/compiler/output/generators/javapreciselymatchers/JavaPreciselyMatchersGenerator.java
index 03d6ae7..69e8e94 100644
--- a/src/main/java/org/zwobble/hobgoblin/compiler/output/generators/javapreciselymatchers/JavaPreciselyMatchersGenerator.java
+++ b/src/main/java/org/zwobble/hobgoblin/compiler/output/generators/javapreciselymatchers/JavaPreciselyMatchersGenerator.java
@@ -133,7 +133,8 @@ public class JavaPreciselyMatchersGenerator implements Generator {
                 ),
                 new JavaBlock(List.of(
                     new JavaExpressionStatement(
-                        new JavaAssignment(
+                        new JavaBinaryOperation(
+                            JavaBinaryOperator.ASSIGN,
                             new JavaFieldAccess(JavaRef.THIS, submatchersIdentifier),
                             new JavaRef(submatchersIdentifier)
                         )
diff --git a/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/JavaWriter.java b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/JavaWriter.java
index e512650..ec91f63 100644
--- a/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/JavaWriter.java
+++ b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/JavaWriter.java
@@ -39,10 +39,15 @@ public class JavaWriter implements AutoCloseable {
         this.writer.close();
     }
 
-    private void writeAssignment(JavaAssignment assignment) throws IOException {
-        this.writeExpression(assignment.left());
-        this.writer.write(" = ");
-        this.writeExpression(assignment.right());
+    private void writeBinaryOperation(JavaBinaryOperation binaryOperation) throws IOException {
+        this.writeExpression(binaryOperation.left());
+        this.writer.write(" ");
+        this.writer.write(switch (binaryOperation.operator()) {
+            case ASSIGN -> "=";
+            case UNSIGNED_RIGHT_SHIFT -> ">>>";
+        });
+        this.writer.write(" ");
+        this.writeExpression(binaryOperation.right());
     }
 
     private void writeBooleanLiteral(JavaBooleanLiteral booleanLiteral) throws IOException {
@@ -226,8 +231,8 @@ public class JavaWriter implements AutoCloseable {
 
     void writeExpression(JavaExpression expression) throws IOException {
         switch (expression) {
-            case JavaAssignment assignment -> {
-                writeAssignment(assignment);
+            case JavaBinaryOperation binaryOperation -> {
+                writeBinaryOperation(binaryOperation);
             }
 
             case JavaBooleanLiteral booleanLiteral -> {
@@ -273,10 +278,6 @@ public class JavaWriter implements AutoCloseable {
             case JavaStringLiteral stringLiteral -> {
                 writeStringLiteral(stringLiteral);
             }
-
-            case JavaUnsignedRightShift unsignedRightShift -> {
-                writeUnsignedRightShift(unsignedRightShift);
-            }
         }
     }
 
@@ -571,12 +572,6 @@ public class JavaWriter implements AutoCloseable {
         }
     }
 
-    private void writeUnsignedRightShift(JavaUnsignedRightShift unsignedRightShift) throws IOException {
-        this.writeExpression(unsignedRightShift.left());
-        this.writer.write(" >>> ");
-        this.writeExpression(unsignedRightShift.right());
-    }
-
     private void writeVisibility(JavaVisibility visibility) throws IOException {
         this.writer.write(switch (visibility) {
             case PUBLIC -> "public";
diff --git a/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaAssignment.java b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaAssignment.java
deleted file mode 100644
index d9ca0c1..0000000
--- a/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaAssignment.java
+++ /dev/null
@@ -1,40 +0,0 @@
-// Generated by hobgoblin.
-
-package org.zwobble.hobgoblin.compiler.output.lang.java.ast;
-
-// Custom area start: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaAssignment imports
-// Custom area end: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaAssignment imports
-
-public record JavaAssignment(org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression left, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression right) implements org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression {
-    public static org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaAssignment.Builder arbitrary() {
-        return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaAssignment.Builder(org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBooleanLiteral.arbitrary().build(), org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBooleanLiteral.arbitrary().build());
-    }
-
-    public record Builder(org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression left, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression right) implements org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression.Builder {
-        public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaAssignment build() {
-            return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaAssignment(left, right);
-        }
-
-        public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaAssignment.Builder withLeft(org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression left) {
-            return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaAssignment.Builder(left, right);
-        }
-
-        public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaAssignment.Builder withLeft(org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression.Builder left) {
-            return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaAssignment.Builder(left.build(), right);
-        }
-
-        public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaAssignment.Builder withRight(org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression right) {
-            return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaAssignment.Builder(left, right);
-        }
-
-        public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaAssignment.Builder withRight(org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression.Builder right) {
-            return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaAssignment.Builder(left, right.build());
-        }
-
-        // Custom area start: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaAssignment.Builder body
-        // Custom area end: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaAssignment.Builder body
-    }
-
-    // Custom area start: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaAssignment body
-    // Custom area end: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaAssignment body
-}
diff --git a/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaBinaryOperation.java b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaBinaryOperation.java
new file mode 100644
index 0000000..cb1c0ef
--- /dev/null
+++ b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaBinaryOperation.java
@@ -0,0 +1,44 @@
+// Generated by hobgoblin.
+
+package org.zwobble.hobgoblin.compiler.output.lang.java.ast;
+
+// Custom area start: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperation imports
+// Custom area end: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperation imports
+
+public record JavaBinaryOperation(org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperator operator, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression left, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression right) implements org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression {
+    public static org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperation.Builder arbitrary() {
+        return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperation.Builder(org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperator.ASSIGN, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBooleanLiteral.arbitrary().build(), org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBooleanLiteral.arbitrary().build());
+    }
+
+    public record Builder(org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperator operator, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression left, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression right) implements org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression.Builder {
+        public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperation build() {
+            return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperation(operator, left, right);
+        }
+
+        public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperation.Builder withOperator(org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperator operator) {
+            return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperation.Builder(operator, left, right);
+        }
+
+        public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperation.Builder withLeft(org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression left) {
+            return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperation.Builder(operator, left, right);
+        }
+
+        public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperation.Builder withLeft(org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression.Builder left) {
+            return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperation.Builder(operator, left.build(), right);
+        }
+
+        public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperation.Builder withRight(org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression right) {
+            return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperation.Builder(operator, left, right);
+        }
+
+        public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperation.Builder withRight(org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression.Builder right) {
+            return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperation.Builder(operator, left, right.build());
+        }
+
+        // Custom area start: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperation.Builder body
+        // Custom area end: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperation.Builder body
+    }
+
+    // Custom area start: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperation body
+    // Custom area end: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperation body
+}
diff --git a/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaBinaryOperator.java b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaBinaryOperator.java
new file mode 100644
index 0000000..4f646ba
--- /dev/null
+++ b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaBinaryOperator.java
@@ -0,0 +1,14 @@
+// Generated by hobgoblin.
+
+package org.zwobble.hobgoblin.compiler.output.lang.java.ast;
+
+// Custom area start: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperator imports
+// Custom area end: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperator imports
+
+public enum JavaBinaryOperator {
+    ASSIGN,
+    UNSIGNED_RIGHT_SHIFT
+
+    // Custom area start: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperator body
+    // Custom area end: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperator body
+}
diff --git a/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaExpression.java b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaExpression.java
index 7e9cdad..7652041 100644
--- a/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaExpression.java
+++ b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaExpression.java
@@ -5,7 +5,7 @@ package org.zwobble.hobgoblin.compiler.output.lang.java.ast;
 // Custom area start: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression imports
 // Custom area end: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression imports
 
-public sealed interface JavaExpression permits org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaAssignment, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBooleanLiteral, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaFieldAccess, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaIntegerLiteral, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaMethodCall, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaMethodRef, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaNewExpression, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaNullLiteral, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaRef, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaStaticFieldAccess, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaStaticMethodCall, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaStringLiteral, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaUnsignedRightShift {
+public sealed interface JavaExpression permits org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperation, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBooleanLiteral, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaFieldAccess, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaIntegerLiteral, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaMethodCall, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaMethodRef, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaNewExpression, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaNullLiteral, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaRef, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaStaticFieldAccess, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaStaticMethodCall, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaStringLiteral {
     public interface Builder {
         public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression build();
 
diff --git a/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaUnsignedRightShift.java b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaUnsignedRightShift.java
deleted file mode 100644
index aced126..0000000
--- a/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaUnsignedRightShift.java
+++ /dev/null
@@ -1,40 +0,0 @@
-// Generated by hobgoblin.
-
-package org.zwobble.hobgoblin.compiler.output.lang.java.ast;
-
-// Custom area start: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaUnsignedRightShift imports
-// Custom area end: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaUnsignedRightShift imports
-
-public record JavaUnsignedRightShift(org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression left, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression right) implements org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression {
-    public static org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaUnsignedRightShift.Builder arbitrary() {
-        return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaUnsignedRightShift.Builder(org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBooleanLiteral.arbitrary().build(), org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBooleanLiteral.arbitrary().build());
-    }
-
-    public record Builder(org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression left, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression right) implements org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression.Builder {
-        public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaUnsignedRightShift build() {
-            return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaUnsignedRightShift(left, right);
-        }
-
-        public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaUnsignedRightShift.Builder withLeft(org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression left) {
-            return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaUnsignedRightShift.Builder(left, right);
-        }
-
-        public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaUnsignedRightShift.Builder withLeft(org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression.Builder left) {
-            return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaUnsignedRightShift.Builder(left.build(), right);
-        }
-
-        public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaUnsignedRightShift.Builder withRight(org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression right) {
-            return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaUnsignedRightShift.Builder(left, right);
-        }
-
-        public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaUnsignedRightShift.Builder withRight(org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression.Builder right) {
-            return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaUnsignedRightShift.Builder(left, right.build());
-        }
-
-        // Custom area start: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaUnsignedRightShift.Builder body
-        // Custom area end: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaUnsignedRightShift.Builder body
-    }
-
-    // Custom area start: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaUnsignedRightShift body
-    // Custom area end: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaUnsignedRightShift body
-}
diff --git a/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/java/JavaWriterTests.java b/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/java/JavaWriterTests.java
index ff374fb..8c3531f 100644
--- a/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/java/JavaWriterTests.java
+++ b/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/java/JavaWriterTests.java
@@ -836,8 +836,9 @@ public class JavaWriterTests {
     }
 
     @Test
-    public void assignment() throws IOException {
-        var java = new JavaAssignment(
+    public void binaryOperationAssignment() throws IOException {
+        var java = new JavaBinaryOperation(
+            JavaBinaryOperator.ASSIGN,
             new JavaRef(JavaIdentifier.of("x")),
             new JavaIntegerLiteral(42)
         );
@@ -848,6 +849,19 @@ public class JavaWriterTests {
     }
 
     @Test
+    public void binaryOperationUnsignedRightShift() throws IOException {
+        var java = JavaBinaryOperation.arbitrary()
+            .withOperator(JavaBinaryOperator.UNSIGNED_RIGHT_SHIFT)
+            .withLeft(JavaRef.arbitrary().withName(JavaIdentifier.of("x")))
+            .withRight(JavaRef.arbitrary().withName(JavaIdentifier.of("y")))
+            .build();
+
+        var string = write(writer -> writer.writeExpression(java));
+
+        assertThat(string, equalTo("x >>> y"));
+    }
+
+    @Test
     public void fieldAccess() throws IOException {
         var java = new JavaFieldAccess(
             new JavaRef(JavaIdentifier.of("one")),
@@ -905,18 +919,6 @@ public class JavaWriterTests {
     }
 
     @Test
-    public void unsignedRightShift() throws IOException {
-        var java = JavaUnsignedRightShift.arbitrary()
-            .withLeft(JavaRef.arbitrary().withName(JavaIdentifier.of("x")))
-            .withRight(JavaRef.arbitrary().withName(JavaIdentifier.of("y")))
-            .build();
-
-        var string = write(writer -> writer.writeExpression(java));
-
-        assertThat(string, equalTo("x >>> y"));
-    }
-
-    @Test
     public void typeRefWithoutArgsHasNoAngleBrackets() throws IOException {
         var java = JavaTypeRef.topLevel(
             JavaPackageName.of("abc", "def"),
diff --git a/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaAssignmentMatcher.java b/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaAssignmentMatcher.java
deleted file mode 100644
index dd3ce7d..0000000
--- a/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaAssignmentMatcher.java
+++ /dev/null
@@ -1,45 +0,0 @@
-// Generated by hobgoblin.
-
-package org.zwobble.hobgoblin.compiler.output.lang.java.ast;
-
-// Custom area start: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaAssignmentMatcher imports
-// Custom area end: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaAssignmentMatcher imports
-
-public class JavaAssignmentMatcher implements org.zwobble.precisely.Matcher<java.lang.Object> {
-    public static org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaAssignmentMatcher isJavaAssignment() {
-        return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaAssignmentMatcher(java.util.List.of());
-    }
-
-    private final java.util.List<org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaAssignment>> submatchers;
-
-    private JavaAssignmentMatcher(java.util.List<org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaAssignment>> submatchers) {
-        this.submatchers = submatchers;
-    }
-
-    public org.zwobble.precisely.MatchResult match(java.lang.Object actual) {
-        return this.toMatcher().match(actual);
-    }
-
-    public org.zwobble.precisely.TextTree describe() {
-        return this.toMatcher().describe();
-    }
-
-    private org.zwobble.precisely.Matcher<java.lang.Object> toMatcher() {
-        return org.zwobble.precisely.Matchers.instanceOf(org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaAssignment.class, this.submatchers);
-    }
-
-    public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaAssignmentMatcher withLeft(org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression> left) {
-        var submatchers = new java.util.ArrayList<org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaAssignment>>(this.submatchers);
-        submatchers.add(org.zwobble.precisely.Matchers.has("left", org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaAssignment::left, left));
-        return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaAssignmentMatcher(submatchers);
-    }
-
-    public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaAssignmentMatcher withRight(org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression> right) {
-        var submatchers = new java.util.ArrayList<org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaAssignment>>(this.submatchers);
-        submatchers.add(org.zwobble.precisely.Matchers.has("right", org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaAssignment::right, right));
-        return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaAssignmentMatcher(submatchers);
-    }
-
-    // Custom area start: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaAssignmentMatcher body
-    // Custom area end: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaAssignmentMatcher body
-}
diff --git a/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaBinaryOperationMatcher.java b/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaBinaryOperationMatcher.java
new file mode 100644
index 0000000..4157a44
--- /dev/null
+++ b/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaBinaryOperationMatcher.java
@@ -0,0 +1,51 @@
+// Generated by hobgoblin.
+
+package org.zwobble.hobgoblin.compiler.output.lang.java.ast;
+
+// Custom area start: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperationMatcher imports
+// Custom area end: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperationMatcher imports
+
+public class JavaBinaryOperationMatcher implements org.zwobble.precisely.Matcher<java.lang.Object> {
+    public static org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperationMatcher isJavaBinaryOperation() {
+        return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperationMatcher(java.util.List.of());
+    }
+
+    private final java.util.List<org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperation>> submatchers;
+
+    private JavaBinaryOperationMatcher(java.util.List<org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperation>> submatchers) {
+        this.submatchers = submatchers;
+    }
+
+    public org.zwobble.precisely.MatchResult match(java.lang.Object actual) {
+        return this.toMatcher().match(actual);
+    }
+
+    public org.zwobble.precisely.TextTree describe() {
+        return this.toMatcher().describe();
+    }
+
+    private org.zwobble.precisely.Matcher<java.lang.Object> toMatcher() {
+        return org.zwobble.precisely.Matchers.instanceOf(org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperation.class, this.submatchers);
+    }
+
+    public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperationMatcher withOperator(org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperator> operator) {
+        var submatchers = new java.util.ArrayList<org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperation>>(this.submatchers);
+        submatchers.add(org.zwobble.precisely.Matchers.has("operator", org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperation::operator, operator));
+        return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperationMatcher(submatchers);
+    }
+
+    public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperationMatcher withLeft(org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression> left) {
+        var submatchers = new java.util.ArrayList<org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperation>>(this.submatchers);
+        submatchers.add(org.zwobble.precisely.Matchers.has("left", org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperation::left, left));
+        return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperationMatcher(submatchers);
+    }
+
+    public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperationMatcher withRight(org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression> right) {
+        var submatchers = new java.util.ArrayList<org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperation>>(this.submatchers);
+        submatchers.add(org.zwobble.precisely.Matchers.has("right", org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperation::right, right));
+        return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperationMatcher(submatchers);
+    }
+
+    // Custom area start: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperationMatcher body
+    // Custom area end: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaBinaryOperationMatcher body
+}
diff --git a/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaUnsignedRightShiftMatcher.java b/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaUnsignedRightShiftMatcher.java
deleted file mode 100644
index 7da71c1..0000000
--- a/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaUnsignedRightShiftMatcher.java
+++ /dev/null
@@ -1,45 +0,0 @@
-// Generated by hobgoblin.
-
-package org.zwobble.hobgoblin.compiler.output.lang.java.ast;
-
-// Custom area start: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaUnsignedRightShiftMatcher imports
-// Custom area end: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaUnsignedRightShiftMatcher imports
-
-public class JavaUnsignedRightShiftMatcher implements org.zwobble.precisely.Matcher<java.lang.Object> {
-    public static org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaUnsignedRightShiftMatcher isJavaUnsignedRightShift() {
-        return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaUnsignedRightShiftMatcher(java.util.List.of());
-    }
-
-    private final java.util.List<org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaUnsignedRightShift>> submatchers;
-
-    private JavaUnsignedRightShiftMatcher(java.util.List<org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaUnsignedRightShift>> submatchers) {
-        this.submatchers = submatchers;
-    }
-
-    public org.zwobble.precisely.MatchResult match(java.lang.Object actual) {
-        return this.toMatcher().match(actual);
-    }
-
-    public org.zwobble.precisely.TextTree describe() {
-        return this.toMatcher().describe();
-    }
-
-    private org.zwobble.precisely.Matcher<java.lang.Object> toMatcher() {
-        return org.zwobble.precisely.Matchers.instanceOf(org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaUnsignedRightShift.class, this.submatchers);
-    }
-
-    public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaUnsignedRightShiftMatcher withLeft(org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression> left) {
-        var submatchers = new java.util.ArrayList<org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaUnsignedRightShift>>(this.submatchers);
-        submatchers.add(org.zwobble.precisely.Matchers.has("left", org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaUnsignedRightShift::left, left));
-        return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaUnsignedRightShiftMatcher(submatchers);
-    }
-
-    public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaUnsignedRightShiftMatcher withRight(org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaExpression> right) {
-        var submatchers = new java.util.ArrayList<org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaUnsignedRightShift>>(this.submatchers);
-        submatchers.add(org.zwobble.precisely.Matchers.has("right", org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaUnsignedRightShift::right, right));
-        return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaUnsignedRightShiftMatcher(submatchers);
-    }
-
-    // Custom area start: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaUnsignedRightShiftMatcher body
-    // Custom area end: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaUnsignedRightShiftMatcher body
-}