protected override void Visit(ConditionalChunk chunk)
{
switch (chunk.Type)
{
case ConditionalType.If:
_source.Write("if ").Write(chunk.Condition).WriteLine(":");
break;
case ConditionalType.ElseIf:
_source.Write("elif ").Write(chunk.Condition).WriteLine(":");
break;
case ConditionalType.Else:
_source.Write("else ").Write(chunk.Condition).WriteLine(":");
break;
case ConditionalType.Once:
_source.Write("if Once(").Write(chunk.Condition).WriteLine("):");
break;
case ConditionalType.Unless:
_source.Write("if not ").Write(chunk.Condition).WriteLine(":");
break;
default:
throw new CompilerException(string.Format("Unknown ConditionalChunk type {0}", chunk.Type));
}
_source.Indent++;
_variables.PushScope();
Accept(chunk.Body);
_variables.PopScope();
_source.WriteLine("pass");
_source.Indent--;
}
public void ConditionalChunkUnlessNegates()
{
var condition1 = new ConditionalChunk { Condition = "x != 12", Type = ConditionalType.Unless };
condition1.Body.Add(new SendLiteralChunk { Text = "ok1" });
var condition2 = new ConditionalChunk { Condition = "x == 12", Type = ConditionalType.Unless };
condition2.Body.Add(new SendLiteralChunk { Text = "fail" });
var chunks = Chunks(
new LocalVariableChunk { Name = "x", Value = "12" },
new SendLiteralChunk { Text = "a" },
condition1,
condition2,
new SendLiteralChunk { Text = "b" });
_compiler.CompileView(chunks, chunks);
var contents = ExecuteView();
Assert.AreEqual("aok1b", contents);
}
public void ChainingElseIfNestsProperly()
{
var condition1 = new ConditionalChunk { Type = ConditionalType.If, Condition = "x == 1" };
condition1.Body.Add(new SendLiteralChunk { Text = "a" });
var condition2 = new ConditionalChunk { Type = ConditionalType.ElseIf, Condition = "x == 2" };
condition2.Body.Add(new SendLiteralChunk { Text = "b" });
var condition3 = new ConditionalChunk { Type = ConditionalType.ElseIf, Condition = "x == 3" };
condition3.Body.Add(new SendLiteralChunk { Text = "c" });
var condition4 = new ConditionalChunk { Type = ConditionalType.Else };
condition4.Body.Add(new SendLiteralChunk { Text = "d" });
var loop = new ForEachChunk { Code = "x in numbers" };
loop.Body.Add(condition1);
loop.Body.Add(condition2);
loop.Body.Add(condition3);
loop.Body.Add(condition4);
var chunks = Chunks(
loop);
_compiler.CompileView(chunks, chunks);
var contents = ExecuteView(new StubViewData { { "numbers", new[] { 0, 1, 2, 3, 4, 7, 2, -4 } } });
Assert.AreEqual("dabcddbd", contents);
}
public void ElseBlockFollowsIf()
{
var condition1 = new ConditionalChunk { Condition = "x != 12" };
condition1.Body.Add(new SendLiteralChunk { Text = "fail" });
var else1 = new ConditionalChunk { Type = ConditionalType.Else };
else1.Body.Add(new SendLiteralChunk { Text = "ok1" });
var condition2 = new ConditionalChunk { Condition = "x == 12" };
condition2.Body.Add(new SendLiteralChunk { Text = "ok2" });
var else2 = new ConditionalChunk { Type = ConditionalType.Else };
else2.Body.Add(new SendLiteralChunk { Text = "fail" });
var chunks = Chunks(
new LocalVariableChunk { Name = "x", Value = "12" },
new SendLiteralChunk { Text = "a" },
condition1,
else1,
condition2,
else2,
new SendLiteralChunk { Text = "b" });
_compiler.CompileView(chunks, chunks);
var contents = ExecuteView();
Assert.AreEqual("aok1ok2b", contents);
}