Add class declarations to TypeScript AST

7 files changed, 155 insertions, 0 deletions

diff --git a/hobgoblin/src/output/lang/typescript/ast.hob b/hobgoblin/src/output/lang/typescript/ast.hob
index 80b7eeb..1af6aca 100644
--- a/hobgoblin/src/output/lang/typescript/ast.hob
+++ b/hobgoblin/src/output/lang/typescript/ast.hob
@@ -6,6 +6,16 @@ struct TypescriptModule {
     field name: List[TypescriptIdentifier];
 }
 
+// == Statements ==
+
+sum TypescriptStatement {
+    variant TypescriptClassDeclaration;
+}
+
+struct TypescriptClassDeclaration {
+    field name: TypescriptIdentifier;
+}
+
 // == Identifiers ==
 
 struct TypescriptIdentifier {
diff --git a/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/typescript/TypescriptWriter.java b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/typescript/TypescriptWriter.java
index a031a82..c230705 100644
--- a/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/typescript/TypescriptWriter.java
+++ b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/typescript/TypescriptWriter.java
@@ -1,7 +1,10 @@
 package org.zwobble.hobgoblin.compiler.output.lang.typescript;
 
 import org.zwobble.hobgoblin.compiler.output.CodeWriter;
+import org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptClassDeclaration;
+import org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptIdentifier;
 import org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptModule;
+import org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptStatement;
 
 import java.io.IOException;
 import java.nio.file.Path;
@@ -45,4 +48,28 @@ public class TypescriptWriter implements AutoCloseable {
     public void writeModule(TypescriptModule module) throws IOException {
         this.writer.writeHeader();
     }
+
+    // == Statements ==
+
+    void writeStatement(TypescriptStatement statement) throws IOException {
+        switch (statement) {
+            case TypescriptClassDeclaration classDeclaration -> {
+                this.writeClassDeclaration(classDeclaration);
+            }
+        }
+    }
+
+    private void writeClassDeclaration(TypescriptClassDeclaration classDeclaration) throws IOException {
+        this.writer.write("class ");
+        this.writeIdentifier(classDeclaration.name());
+        this.writer.write(" {");
+        this.writer.newLine();
+        this.writer.write("}");
+    }
+
+    // == Identifiers ==
+
+    private void writeIdentifier(TypescriptIdentifier name) throws IOException {
+        this.writer.write(name.value());
+    }
 }
diff --git a/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/typescript/ast/TypescriptClassDeclaration.java b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/typescript/ast/TypescriptClassDeclaration.java
new file mode 100644
index 0000000..a2e992c
--- /dev/null
+++ b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/typescript/ast/TypescriptClassDeclaration.java
@@ -0,0 +1,36 @@
+// Generated by hobgoblin.
+
+package org.zwobble.hobgoblin.compiler.output.lang.typescript.ast;
+
+// Custom area start: org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptClassDeclaration imports
+// Custom area end: org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptClassDeclaration imports
+
+public record TypescriptClassDeclaration(
+    org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptIdentifier name
+) implements org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptStatement {
+    public static org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptClassDeclaration.Builder arbitrary() {
+        return new org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptClassDeclaration.Builder(org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptIdentifier.arbitrary().build());
+    }
+
+    public record Builder(
+        org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptIdentifier name
+    ) implements org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptStatement.Builder {
+        public org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptClassDeclaration build() {
+            return new org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptClassDeclaration(name);
+        }
+
+        public org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptClassDeclaration.Builder withName(org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptIdentifier name) {
+            return new org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptClassDeclaration.Builder(name);
+        }
+
+        public org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptClassDeclaration.Builder withName(org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptIdentifier.Builder name) {
+            return new org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptClassDeclaration.Builder(name.build());
+        }
+
+        // Custom area start: org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptClassDeclaration.Builder body
+        // Custom area end: org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptClassDeclaration.Builder body
+    }
+
+    // Custom area start: org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptClassDeclaration body
+    // Custom area end: org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptClassDeclaration body
+}
diff --git a/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/typescript/ast/TypescriptIdentifier.java b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/typescript/ast/TypescriptIdentifier.java
index a87c792..f9b85e9 100644
--- a/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/typescript/ast/TypescriptIdentifier.java
+++ b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/typescript/ast/TypescriptIdentifier.java
@@ -28,5 +28,8 @@ public record TypescriptIdentifier(
     }
 
     // Custom area start: org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptIdentifier body
+    public static TypescriptIdentifier of(String value) {
+        return new TypescriptIdentifier(value);
+    }
     // Custom area end: org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptIdentifier body
 }
diff --git a/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/typescript/ast/TypescriptStatement.java b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/typescript/ast/TypescriptStatement.java
new file mode 100644
index 0000000..8bb978b
--- /dev/null
+++ b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/typescript/ast/TypescriptStatement.java
@@ -0,0 +1,18 @@
+// Generated by hobgoblin.
+
+package org.zwobble.hobgoblin.compiler.output.lang.typescript.ast;
+
+// Custom area start: org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptStatement imports
+// Custom area end: org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptStatement imports
+
+public sealed interface TypescriptStatement permits org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptClassDeclaration {
+    public interface Builder {
+        public org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptStatement build();
+
+        // Custom area start: org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptStatement.Builder body
+        // Custom area end: org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptStatement.Builder body
+    }
+
+    // Custom area start: org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptStatement body
+    // Custom area end: org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptStatement body
+}
diff --git a/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/typescript/TypescriptWriterTests.java b/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/typescript/TypescriptWriterTests.java
index 71978f0..a5cf539 100644
--- a/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/typescript/TypescriptWriterTests.java
+++ b/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/typescript/TypescriptWriterTests.java
@@ -2,6 +2,8 @@ package org.zwobble.hobgoblin.compiler.output.lang.typescript;
 
 import org.junit.jupiter.api.Test;
 import org.zwobble.hobgoblin.compiler.output.CodeWriter;
+import org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptClassDeclaration;
+import org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptIdentifier;
 import org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptModule;
 
 import java.io.IOException;
@@ -27,6 +29,24 @@ public class TypescriptWriterTests {
         ));
     }
 
+    // == Statements ==
+
+    // === Class declarations ===
+
+    @Test
+    public void emptyClassDeclaration() throws IOException {
+        var typescript = TypescriptClassDeclaration.arbitrary()
+            .withName(TypescriptIdentifier.of("X"))
+            .build();
+
+        var string = write(writer -> writer.writeStatement(typescript));
+
+        assertThat(string, equalTo("""
+            class X {
+            }"""
+        ));
+    }
+
     private String write(TypescriptWriter.Write write) throws IOException {
         return write(write, Optional.empty());
     }
diff --git a/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/typescript/ast/TypescriptClassDeclarationMatcher.java b/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/typescript/ast/TypescriptClassDeclarationMatcher.java
new file mode 100644
index 0000000..8bde6e1
--- /dev/null
+++ b/src/test/java/org/zwobble/hobgoblin/compiler/output/lang/typescript/ast/TypescriptClassDeclarationMatcher.java
@@ -0,0 +1,41 @@
+// Generated by hobgoblin.
+
+package org.zwobble.hobgoblin.compiler.output.lang.typescript.ast;
+
+// Custom area start: org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptClassDeclarationMatcher imports
+// Custom area end: org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptClassDeclarationMatcher imports
+
+public final class TypescriptClassDeclarationMatcher implements org.zwobble.precisely.Matcher<java.lang.Object> {
+    public static org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptClassDeclarationMatcher isTypescriptClassDeclaration() {
+        return new org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptClassDeclarationMatcher(java.util.List.of());
+    }
+
+    private final java.util.List<org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptClassDeclaration>> submatchers;
+
+    private TypescriptClassDeclarationMatcher(
+        java.util.List<org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptClassDeclaration>> 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.typescript.ast.TypescriptClassDeclaration.class, this.submatchers);
+    }
+
+    public org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptClassDeclarationMatcher withName(org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptIdentifier> name) {
+        var submatchers = new java.util.ArrayList<org.zwobble.precisely.Matcher<? super org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptClassDeclaration>>(this.submatchers);
+        submatchers.add(org.zwobble.precisely.Matchers.has("name", org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptClassDeclaration::name, name));
+        return new org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptClassDeclarationMatcher(submatchers);
+    }
+
+    // Custom area start: org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptClassDeclarationMatcher body
+    // Custom area end: org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptClassDeclarationMatcher body
+}