Implement negation in C# backend

3 files changed, 29 insertions, 2 deletions

diff --git a/src/main/java/org/zwobble/couscous/backends/csharp/CsharpCodeGenerator.java b/src/main/java/org/zwobble/couscous/backends/csharp/CsharpCodeGenerator.java
index 9e48e9a..ab55e0d 100644
--- a/src/main/java/org/zwobble/couscous/backends/csharp/CsharpCodeGenerator.java
+++ b/src/main/java/org/zwobble/couscous/backends/csharp/CsharpCodeGenerator.java
@@ -50,7 +50,8 @@ public class CsharpCodeGenerator extends NodeTransformer {
         return call.getReceiver().accept(new Receiver.Mapper<Optional<ExpressionNode>>() {
             @Override
             public Optional<ExpressionNode> visit(ExpressionNode receiver) {
-                return Optional.empty();
+                return CsharpPrimitiveMethods.getPrimitiveMethod(receiver.getType(), call.getMethodName())
+                    .map(generator -> generator.generate(receiver, call.getArguments()));
             }
 
             @Override
diff --git a/src/main/java/org/zwobble/couscous/backends/csharp/CsharpPrimitiveMethods.java b/src/main/java/org/zwobble/couscous/backends/csharp/CsharpPrimitiveMethods.java
index 9424b2d..e094258 100644
--- a/src/main/java/org/zwobble/couscous/backends/csharp/CsharpPrimitiveMethods.java
+++ b/src/main/java/org/zwobble/couscous/backends/csharp/CsharpPrimitiveMethods.java
@@ -3,6 +3,8 @@ package org.zwobble.couscous.backends.csharp;
 import com.google.common.collect.ImmutableMap;
 import org.zwobble.couscous.ast.ExpressionNode;
 import org.zwobble.couscous.ast.TypeName;
+import org.zwobble.couscous.backends.python.ast.PythonExpressionNode;
+import org.zwobble.couscous.values.BooleanValue;
 import org.zwobble.couscous.values.ObjectValues;
 
 import java.util.List;
@@ -13,6 +15,18 @@ import static org.zwobble.couscous.ast.MethodCallNode.staticMethodCall;
 import static org.zwobble.couscous.util.ExtraLists.list;
 
 public class CsharpPrimitiveMethods {
+    private static final Map<String, PrimitiveMethodGenerator> BOOLEAN_METHODS;
+
+    static {
+        ImmutableMap.Builder<String, PrimitiveMethodGenerator> methods = ImmutableMap.builder();
+        BOOLEAN_METHODS = methods.build();
+    }
+
+    private static final Map<TypeName, Map<String, PrimitiveMethodGenerator>> METHODS =
+        ImmutableMap.<TypeName, Map<String, PrimitiveMethodGenerator>>builder()
+            .put(BooleanValue.REF, BOOLEAN_METHODS)
+            .build();
+
     private static final Map<String, PrimitiveStaticMethodGenerator> STATIC_INT_METHODS =
         ImmutableMap.<String, PrimitiveStaticMethodGenerator>builder()
 
@@ -29,6 +43,16 @@ public class CsharpPrimitiveMethods {
             .put(ObjectValues.BOXED_INT, STATIC_INT_METHODS)
             .build();
 
+    public static Optional<PrimitiveMethodGenerator> getPrimitiveMethod(TypeName type, String methodName) {
+        return Optional.ofNullable(METHODS.get(type))
+            .flatMap(methodsForType -> Optional.ofNullable(methodsForType.get(methodName)));
+    }
+
+    @FunctionalInterface
+    public interface PrimitiveMethodGenerator {
+        ExpressionNode generate(ExpressionNode receiver, List<ExpressionNode> arguments);
+    }
+
     public static Optional<PrimitiveStaticMethodGenerator> getPrimitiveStaticMethod(TypeName type, String methodName) {
         return Optional.ofNullable(STATIC_METHODS.get(type))
             .flatMap(methodsForType -> Optional.ofNullable(methodsForType.get(methodName)));
diff --git a/src/main/java/org/zwobble/couscous/backends/csharp/CsharpSerializer.java b/src/main/java/org/zwobble/couscous/backends/csharp/CsharpSerializer.java
index 06dafbb..6f20310 100644
--- a/src/main/java/org/zwobble/couscous/backends/csharp/CsharpSerializer.java
+++ b/src/main/java/org/zwobble/couscous/backends/csharp/CsharpSerializer.java
@@ -121,7 +121,9 @@ public class CsharpSerializer implements NodeVisitor {
 
     @Override
     public void visit(OperationNode operation) {
-        write(operation.desugar());
+        // TODO: distinguish operator types (prefix, infix)
+        writer.writeSymbol(operation.getOperator().getSymbol());
+        write(operation.getArguments().get(0));
     }
 
     private void writeArguments(List<? extends ExpressionNode> arguments) {