Add Java enum declarations

7 files changed, 239 insertions, 1 deletions

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 0299a31..0e5fd92 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
@@ -61,6 +61,10 @@ public class JavaWriter implements AutoCloseable {
                 writeClassDeclaration(classDeclaration);
             }
 
+            case JavaEnumDeclaration enumDeclaration -> {
+                writeEnumDeclaration(enumDeclaration);
+            }
+
             case JavaInterfaceDeclaration interfaceDeclaration -> {
                 writeInterfaceDeclaration(interfaceDeclaration);
             }
@@ -181,6 +185,32 @@ public class JavaWriter implements AutoCloseable {
         this.writer.writeCustomArea(customAreaName.toString());
     }
 
+    private void writeEnumDeclaration(JavaEnumDeclaration enumDeclaration) throws IOException {
+        this.writeDocComment(enumDeclaration.docComment());
+        this.writer.write("public enum ");
+        this.writer.write(enumDeclaration.name());
+        this.writer.write(" {");
+        this.writer.indent();
+        this.writer.newLine();
+
+        if (!enumDeclaration.constants().isEmpty()) {
+            writeWithSeparator(
+                enumDeclaration.constants(),
+                constant -> this.writer.write(constant.name()),
+                () -> {
+                    this.writer.write(",");
+                    this.writer.newLine();
+                }
+            );
+            this.writer.newLine();
+            this.writer.newLine();
+        }
+
+        this.writeCustomArea(enumDeclaration.customArea());
+        this.writer.dedent();
+        this.writer.write("}");
+    }
+
     void writeExpression(JavaExpression expression) throws IOException {
         switch (expression) {
             case JavaAssignment assignment -> {
diff --git a/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaEnumConstant.java b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaEnumConstant.java
new file mode 100644
index 0000000..6e7e775
--- /dev/null
+++ b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaEnumConstant.java
@@ -0,0 +1,25 @@
+// Generated by hobgoblin.
+
+package org.zwobble.hobgoblin.compiler.output.lang.java.ast;
+
+public record JavaEnumConstant(String name) {
+    public static org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumConstant.Builder arbitrary() {
+        return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumConstant.Builder("");
+    }
+
+    public record Builder(String name) {
+        public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumConstant build() {
+            return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumConstant(name);
+        }
+
+        public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumConstant.Builder withName(String name) {
+            return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumConstant.Builder(name);
+        }
+
+        // Custom area start: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumConstant.Builder body
+        // Custom area end: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumConstant.Builder body
+    }
+
+    // Custom area start: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumConstant body
+    // Custom area end: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumConstant body
+}
diff --git a/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaEnumDeclaration.java b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaEnumDeclaration.java
new file mode 100644
index 0000000..dffd204
--- /dev/null
+++ b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaEnumDeclaration.java
@@ -0,0 +1,41 @@
+// Generated by hobgoblin.
+
+package org.zwobble.hobgoblin.compiler.output.lang.java.ast;
+
+public record JavaEnumDeclaration(String name, java.util.List<org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumConstant> constants, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaCustomArea customArea, org.zwobble.hobgoblin.compiler.ast.DocComment docComment) implements org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaTypeDeclaration {
+    public static org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumDeclaration.Builder arbitrary() {
+        return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumDeclaration.Builder("", java.util.List.of(), org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaCustomArea.arbitrary().build(), org.zwobble.hobgoblin.compiler.ast.Native.arbitraryDocComment());
+    }
+
+    public record Builder(String name, java.util.List<org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumConstant> constants, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaCustomArea customArea, org.zwobble.hobgoblin.compiler.ast.DocComment docComment) implements org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaTypeDeclaration.Builder {
+        public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumDeclaration build() {
+            return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumDeclaration(name, constants, customArea, docComment);
+        }
+
+        public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumDeclaration.Builder withName(String name) {
+            return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumDeclaration.Builder(name, constants, customArea, docComment);
+        }
+
+        public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumDeclaration.Builder withConstants(java.util.List<org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumConstant> constants) {
+            return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumDeclaration.Builder(name, constants, customArea, docComment);
+        }
+
+        public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumDeclaration.Builder withCustomArea(org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaCustomArea customArea) {
+            return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumDeclaration.Builder(name, constants, customArea, docComment);
+        }
+
+        public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumDeclaration.Builder withCustomArea(org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaCustomArea.Builder customArea) {
+            return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumDeclaration.Builder(name, constants, customArea.build(), docComment);
+        }
+
+        public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumDeclaration.Builder withDocComment(org.zwobble.hobgoblin.compiler.ast.DocComment docComment) {
+            return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumDeclaration.Builder(name, constants, customArea, docComment);
+        }
+
+        // Custom area start: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumDeclaration.Builder body
+        // Custom area end: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumDeclaration.Builder body
+    }
+
+    // Custom area start: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumDeclaration body
+    // Custom area end: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumDeclaration body
+}
diff --git a/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaTypeDeclaration.java b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaTypeDeclaration.java
index b4c5d49..93e3474 100644
--- a/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaTypeDeclaration.java
+++ b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaTypeDeclaration.java
@@ -2,7 +2,7 @@
 
 package org.zwobble.hobgoblin.compiler.output.lang.java.ast;
 
-public sealed interface JavaTypeDeclaration permits org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaClassDeclaration, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaInterfaceDeclaration, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaRecordDeclaration {
+public sealed interface JavaTypeDeclaration permits org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaClassDeclaration, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumDeclaration, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaInterfaceDeclaration, org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaRecordDeclaration {
     public interface Builder {
         public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaTypeDeclaration build();
 
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 1de864d..78b975d 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
@@ -174,6 +174,68 @@ public class JavaWriterTests {
     }
 
     @Test
+    public void emptyEnumDeclaration() throws IOException {
+        var java = JavaEnumDeclaration.arbitrary()
+            .withName("SmallNumber")
+            .withCustomArea(JavaCustomArea.forType(JavaTypeRef.topLevel(List.of(), "SmallNumber"), "body"))
+            .build();
+
+        var string = write(writer -> writer.writeTypeDeclaration(java));
+
+        assertThat(string, equalTo("""
+            public enum SmallNumber {
+                // Custom area start: SmallNumber body
+                // Custom area end: SmallNumber body
+            }"""
+        ));
+    }
+
+    @Test
+    public void enumDeclarationWithConstants() throws IOException {
+        var java = JavaEnumDeclaration.arbitrary()
+            .withName("SmallNumber")
+            .withCustomArea(JavaCustomArea.forType(JavaTypeRef.topLevel(List.of(), "SmallNumber"), "body"))
+            .withConstants(List.of(
+                JavaEnumConstant.arbitrary().withName("ZERO").build(),
+                JavaEnumConstant.arbitrary().withName("ONE").build(),
+                JavaEnumConstant.arbitrary().withName("TWO").build()
+            ))
+            .build();
+
+        var string = write(writer -> writer.writeTypeDeclaration(java));
+
+        assertThat(string, equalTo("""
+            public enum SmallNumber {
+                ZERO,
+                ONE,
+                TWO
+
+                // Custom area start: SmallNumber body
+                // Custom area end: SmallNumber body
+            }"""
+        ));
+    }
+
+    @Test
+    public void enumDeclarationWithDocComment() throws IOException {
+        var java = JavaEnumDeclaration.arbitrary()
+            .withName("SmallNumber")
+            .withDocComment(new DocComment("A small number."))
+            .withCustomArea(JavaCustomArea.forType(JavaTypeRef.topLevel(List.of(), "SmallNumber"), "body"))
+            .build();
+
+        var string = write(writer -> writer.writeTypeDeclaration(java));
+
+        assertThat(string, equalTo("""
+            /// A small number.
+            public enum SmallNumber {
+                // Custom area start: SmallNumber body
+                // Custom area end: SmallNumber body
+            }"""
+        ));
+    }
+
+    @Test
     public void openInterfaceDeclaration() throws IOException {
         var java = new JavaInterfaceDeclaration(
             "Shape",
diff --git a/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaEnumConstantMatcher.java b/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaEnumConstantMatcher.java
new file mode 100644
index 0000000..58d6f54
--- /dev/null
+++ b/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaEnumConstantMatcher.java
@@ -0,0 +1,34 @@
+// Generated by hobgoblin.
+
+package org.zwobble.hobgoblin.compiler.output.lang.java.ast;
+
+public class JavaEnumConstantMatcher implements org.zwobble.precisely.Matcher<java.lang.Object> {
+    public static org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumConstantMatcher isJavaEnumConstant() {
+        return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumConstantMatcher(java.util.List.of());
+    }
+
+    private final java.util.List<org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumConstant>> submatchers;
+
+    private JavaEnumConstantMatcher(java.util.List<org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumConstant>> 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.JavaEnumConstant.class, this.submatchers);
+    }
+
+    public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumConstantMatcher withName(org.zwobble.precisely.Matcher<? super String> name) {
+        return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumConstantMatcher(java.util.stream.Stream.concat(this.submatchers.stream(), java.util.stream.Stream.of(org.zwobble.precisely.Matchers.has("name", org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumConstant::name, name))).toList());
+    }
+
+    // Custom area start: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumConstantMatcher body
+    // Custom area end: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumConstantMatcher body
+}
diff --git a/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaEnumDeclarationMatcher.java b/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaEnumDeclarationMatcher.java
new file mode 100644
index 0000000..0c7be66
--- /dev/null
+++ b/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/java/ast/JavaEnumDeclarationMatcher.java
@@ -0,0 +1,46 @@
+// Generated by hobgoblin.
+
+package org.zwobble.hobgoblin.compiler.output.lang.java.ast;
+
+public class JavaEnumDeclarationMatcher implements org.zwobble.precisely.Matcher<java.lang.Object> {
+    public static org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumDeclarationMatcher isJavaEnumDeclaration() {
+        return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumDeclarationMatcher(java.util.List.of());
+    }
+
+    private final java.util.List<org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumDeclaration>> submatchers;
+
+    private JavaEnumDeclarationMatcher(java.util.List<org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumDeclaration>> 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.JavaEnumDeclaration.class, this.submatchers);
+    }
+
+    public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumDeclarationMatcher withName(org.zwobble.precisely.Matcher<? super String> name) {
+        return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumDeclarationMatcher(java.util.stream.Stream.concat(this.submatchers.stream(), java.util.stream.Stream.of(org.zwobble.precisely.Matchers.has("name", org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumDeclaration::name, name))).toList());
+    }
+
+    public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumDeclarationMatcher withConstants(org.zwobble.precisely.Matcher<? super java.util.List<org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumConstant>> constants) {
+        return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumDeclarationMatcher(java.util.stream.Stream.concat(this.submatchers.stream(), java.util.stream.Stream.of(org.zwobble.precisely.Matchers.has("constants", org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumDeclaration::constants, constants))).toList());
+    }
+
+    public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumDeclarationMatcher withCustomArea(org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaCustomArea> customArea) {
+        return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumDeclarationMatcher(java.util.stream.Stream.concat(this.submatchers.stream(), java.util.stream.Stream.of(org.zwobble.precisely.Matchers.has("customArea", org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumDeclaration::customArea, customArea))).toList());
+    }
+
+    public org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumDeclarationMatcher withDocComment(org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.ast.DocComment> docComment) {
+        return new org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumDeclarationMatcher(java.util.stream.Stream.concat(this.submatchers.stream(), java.util.stream.Stream.of(org.zwobble.precisely.Matchers.has("docComment", org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumDeclaration::docComment, docComment))).toList());
+    }
+
+    // Custom area start: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumDeclarationMatcher body
+    // Custom area end: org.zwobble.hobgoblin.compiler.output.lang.java.ast.JavaEnumDeclarationMatcher body
+}