Support ternary conditionals in Python backend

1 files changed, 22 insertions, 0 deletions

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 bc5fb19..728b71a 100644
--- a/src/main/java/org/zwobble/couscous/backends/python/PythonSerializer.java
+++ b/src/main/java/org/zwobble/couscous/backends/python/PythonSerializer.java
@@ -4,6 +4,8 @@ import org.zwobble.couscous.backends.python.ast.PythonAssignmentNode;
 import org.zwobble.couscous.backends.python.ast.PythonBlock;
 import org.zwobble.couscous.backends.python.ast.PythonBooleanLiteralNode;
 import org.zwobble.couscous.backends.python.ast.PythonClassNode;
+import org.zwobble.couscous.backends.python.ast.PythonConditionalExpressionNode;
+import org.zwobble.couscous.backends.python.ast.PythonExpressionNode;
 import org.zwobble.couscous.backends.python.ast.PythonFunctionDefinitionNode;
 import org.zwobble.couscous.backends.python.ast.PythonIntegerLiteralNode;
 import org.zwobble.couscous.backends.python.ast.PythonModuleNode;
@@ -62,6 +64,20 @@ public class PythonSerializer implements PythonNodeVisitor<Void> {
     }
 
     @Override
+    public Void visit(PythonConditionalExpressionNode conditional) {
+        writeParenthesised(conditional.getTrueValue());
+        writer.writeSpace();
+        writer.writeKeyword("if");
+        writer.writeSpace();
+        writeParenthesised(conditional.getCondition());
+        writer.writeSpace();
+        writer.writeKeyword("else");
+        writer.writeSpace();
+        writeParenthesised(conditional.getFalseValue());
+        return null;
+    }
+
+    @Override
     public Void visit(PythonReturnNode pythonReturn) {
         writer.startStatement();
         writer.writeKeyword("return");
@@ -119,6 +135,12 @@ public class PythonSerializer implements PythonNodeVisitor<Void> {
         return null;
     }
 
+    private void writeParenthesised(PythonExpressionNode expression) {
+        writer.writeSymbol("(");
+        write(expression);
+        writer.writeSymbol(")");
+    }
+
     private void writeArgumentNames(PythonFunctionDefinitionNode functionDefinition) {
         if (!functionDefinition.getArgumentNames().isEmpty()) {
             writer.writeIdentifier(functionDefinition.getArgumentNames().get(0));