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);
}
protected override void Visit(ForEachChunk chunk)
{
var forEach = new ForEachInspector(chunk.Code);
if (!forEach.Recognized)
{
_source.Write("for ").Write(chunk.Code).WriteLine(":");
_source.Indent++;
_variables.PushScope();
Accept(chunk.Body);
_source.WriteLine("pass");
_variables.PopScope();
_source.Indent--;
return;
}
_variables.PushScope();
var detect = new DetectCodeExpressionVisitor(OuterPartial);
var autoIndex = detect.Add(forEach.VariableName + "Index");
var autoCount = detect.Add(forEach.VariableName + "Count");
var autoIsFirst = detect.Add(forEach.VariableName + "IsFirst");
var autoIsLast = detect.Add(forEach.VariableName + "IsLast");
detect.Accept(chunk.Body);
if (autoIsLast.Detected)
{
autoIndex.Detected = true;
autoCount.Detected = true;
}
if (autoIndex.Detected)
{
_variables.Declare(forEach.VariableName + "Index");
_source.Write(forEach.VariableName).WriteLine("Index=0");
}
if (autoIsFirst.Detected)
{
_variables.Declare(forEach.VariableName + "IsFirst");
_source.Write(forEach.VariableName).WriteLine("IsFirst=True");
}
if (autoCount.Detected)
{
_variables.Declare(forEach.VariableName + "Count");
_source
.Write(forEach.VariableName).Write("Count=len([0 for ")
.Write(chunk.Code).WriteLine("])");
}
_variables.Declare(forEach.VariableName);
_source.Write("for ").Write(chunk.Code).WriteLine(":");
_source.Indent++;
if (autoIsLast.Detected)
{
_variables.Declare(forEach.VariableName + "IsLast");
_source
.Write(forEach.VariableName).Write("IsLast=(")
.Write(forEach.VariableName).Write("Index==")
.Write(forEach.VariableName).WriteLine("Count - 1)");
}
Accept(chunk.Body);
if (autoIndex.Detected)
{
_source
.Write(forEach.VariableName).Write("Index=")
.Write(forEach.VariableName).WriteLine("Index+1");
}
if (autoIsFirst.Detected)
{
_source.Write(forEach.VariableName).WriteLine("IsFirst=False");
}
_source.WriteLine("pass");
_source.Indent--;
_variables.PopScope();
}
public void ForEachLoopOverArray()
{
var loop = new ForEachChunk { Code = "number in numbers" };
loop.Body.Add(new SendExpressionChunk { Code = "number" });
var chunks = Chunks(
loop);
_compiler.CompileView(chunks, chunks);
var contents = ExecuteView(new StubViewData { { "numbers", new[] { 1, 2, 3, 4, 5 } } });
Assert.AreEqual("12345", contents);
}