4 files changed, 45 insertions, 0 deletions
diff --git a/src/main/java/org/zwobble/couscous/backends/python/PrimitiveMethods.java b/src/main/java/org/zwobble/couscous/backends/python/PrimitiveMethods.java
index 9639c72..c6aa62d 100644
--- a/src/main/java/org/zwobble/couscous/backends/python/PrimitiveMethods.java
+++ b/src/main/java/org/zwobble/couscous/backends/python/PrimitiveMethods.java
@@ -6,6 +6,8 @@ import java.util.Optional;
 
 import org.zwobble.couscous.ast.TypeName;
 import org.zwobble.couscous.backends.python.ast.PythonExpressionNode;
+import org.zwobble.couscous.backends.python.ast.PythonNotNode;
+import org.zwobble.couscous.values.BooleanValue;
 import org.zwobble.couscous.values.IntegerValue;
 import org.zwobble.couscous.values.StringValue;
 
@@ -32,6 +34,14 @@ public class PrimitiveMethods {
             
             .build();
     
+    private static final Map<String, PrimitiveMethodGenerator> BOOLEAN_METHODS =
+        ImmutableMap.<String, PrimitiveMethodGenerator>builder()
+        
+            .put("negate", (receiver, arguments) ->
+                PythonNotNode.pythonNot(receiver))
+            
+            .build();
+    
     private static final Map<String, PrimitiveMethodGenerator> INT_METHODS;
         
     static {
@@ -76,6 +86,7 @@ public class PrimitiveMethods {
     private static final Map<TypeName, Map<String, PrimitiveMethodGenerator>> METHODS = 
         ImmutableMap.<TypeName, Map<String, PrimitiveMethodGenerator>>builder()
             .put(StringValue.REF, STRING_METHODS)
+            .put(BooleanValue.REF, BOOLEAN_METHODS)
             .put(IntegerValue.REF, INT_METHODS)
             .build();
     
diff --git a/src/main/java/org/zwobble/couscous/backends/python/PythonSerializer.java b/src/main/java/org/zwobble/couscous/backends/python/PythonSerializer.java
index 1674e1f..eadb545 100644
--- a/src/main/java/org/zwobble/couscous/backends/python/PythonSerializer.java
+++ b/src/main/java/org/zwobble/couscous/backends/python/PythonSerializer.java
@@ -16,6 +16,7 @@ import org.zwobble.couscous.backends.python.ast.PythonImportNode;
 import org.zwobble.couscous.backends.python.ast.PythonIntegerLiteralNode;
 import org.zwobble.couscous.backends.python.ast.PythonModuleNode;
 import org.zwobble.couscous.backends.python.ast.PythonNode;
+import org.zwobble.couscous.backends.python.ast.PythonNotNode;
 import org.zwobble.couscous.backends.python.ast.PythonPassNode;
 import org.zwobble.couscous.backends.python.ast.PythonReturnNode;
 import org.zwobble.couscous.backends.python.ast.PythonStatementNode;
@@ -103,6 +104,13 @@ public class PythonSerializer implements PythonNodeVisitor {
         });
         writer.writeSymbol("]");
     }
+
+    @Override
+    public void visit(PythonNotNode notOperation) {
+        writer.writeKeyword("not");
+        writer.writeSpace();
+        writeParenthesised(notOperation.getOperand());
+    }
     
     @Override
     public void visit(PythonReturnNode pythonReturn) {
diff --git a/src/main/java/org/zwobble/couscous/backends/python/ast/PythonNotNode.java b/src/main/java/org/zwobble/couscous/backends/python/ast/PythonNotNode.java
new file mode 100644
index 0000000..6fe7dc6
--- /dev/null
+++ b/src/main/java/org/zwobble/couscous/backends/python/ast/PythonNotNode.java
@@ -0,0 +1,24 @@
+package org.zwobble.couscous.backends.python.ast;
+
+import org.zwobble.couscous.backends.python.ast.visitors.PythonNodeVisitor;
+
+public class PythonNotNode implements PythonExpressionNode {
+    public static PythonExpressionNode pythonNot(PythonExpressionNode operand) {
+        return new PythonNotNode(operand);
+    }
+    
+    private final PythonExpressionNode operand;
+
+    private PythonNotNode(PythonExpressionNode operand) {
+        this.operand = operand;
+    }
+    
+    public PythonExpressionNode getOperand() {
+        return operand;
+    }
+    
+    @Override
+    public void accept(PythonNodeVisitor visitor) {
+        visitor.visit(this);
+    }
+}
diff --git a/src/main/java/org/zwobble/couscous/backends/python/ast/visitors/PythonNodeVisitor.java b/src/main/java/org/zwobble/couscous/backends/python/ast/visitors/PythonNodeVisitor.java
index 7632342..59a1fe9 100644
--- a/src/main/java/org/zwobble/couscous/backends/python/ast/visitors/PythonNodeVisitor.java
+++ b/src/main/java/org/zwobble/couscous/backends/python/ast/visitors/PythonNodeVisitor.java
@@ -11,6 +11,7 @@ import org.zwobble.couscous.backends.python.ast.PythonGetSliceNode;
 import org.zwobble.couscous.backends.python.ast.PythonImportNode;
 import org.zwobble.couscous.backends.python.ast.PythonIntegerLiteralNode;
 import org.zwobble.couscous.backends.python.ast.PythonModuleNode;
+import org.zwobble.couscous.backends.python.ast.PythonNotNode;
 import org.zwobble.couscous.backends.python.ast.PythonPassNode;
 import org.zwobble.couscous.backends.python.ast.PythonReturnNode;
 import org.zwobble.couscous.backends.python.ast.PythonStringLiteralNode;
@@ -25,6 +26,7 @@ public interface PythonNodeVisitor {
     void visit(PythonAttributeAccessNode attributeAccess);
     void visit(PythonCallNode call);
     void visit(PythonGetSliceNode getSlice);
+    void visit(PythonNotNode notOperation);
     
     void visit(PythonReturnNode pythonReturn);
     void visit(PythonPassNode pass);