public void PreParseExpression(ParseContext context)
{
//var pl = context.Current;
Condition.PreParseExpression(context);
context.AddLevel();
foreach (var line in CodeLines)
{
line.PreParseExpression(context);
}
context.RemoveLevel();
}
public string ToString(ParseContext context)
{
var result = "while(" + Condition.ToString(context) + ")\n";
result += context.Pad + "{\n";
context.AddLevel();
foreach (var line in CodeLines)
{
var createVariable = line as CreateVariable;
if (createVariable != null)
{
createVariable.DefaultInitialize(context);
}
result += context.Pad + line.ToString(context) + ";\n";
}
context.RemoveLevel();
result += context.Pad + "}";
return result;
}
public Expression ToExpression(ParseContext context)
{
var conditionExpression = Condition.ToExpression(context);
context.AddLevel();
var thenLine = new List<Expression>();
var listOfThenVars = new List<ParameterExpression>();
foreach (var line in ThenCodeLines)
{
var expLine = line.ToExpression(context);
var createVariable = line as CreateVariable;
if (createVariable != null)
{
listOfThenVars.Add((ParameterExpression)expLine);
expLine = createVariable.DefaultInitialize(context);
}
thenLine.Add(expLine);
}
var thenBlock = Expression.Block(listOfThenVars.ToArray(), thenLine);
context.RemoveLevel();
var elseLine = new List<Expression>();
if (ElseCodeLines.Count > 0)
{
context.AddLevel();
var listOfElseVars = new List<ParameterExpression>();
foreach (var line in ElseCodeLines)
{
var expLine = line.ToExpression(context);
var createVariable = line as CreateVariable;
if (createVariable != null)
{
listOfElseVars.Add((ParameterExpression)expLine);
expLine = createVariable.DefaultInitialize(context);
}
elseLine.Add(expLine);
}
context.RemoveLevel();
var elseBlock = Expression.Block(listOfElseVars, elseLine);
return Expression.IfThenElse(conditionExpression, thenBlock, elseBlock);
}
return Expression.IfThen(conditionExpression, thenBlock);
}
public Expression ToExpression(ParseContext context)
{
var conditionExpression = Condition.ToExpression(context);
context.AddLevel();
var thenLine = new List<Expression>();
var listOfThenVars = new List<ParameterExpression>();
foreach (var line in CodeLines)
{
var expLine = line.ToExpression(context);
var createVariable = line as CreateVariable;
if (createVariable != null)
{
listOfThenVars.Add((ParameterExpression)expLine);
expLine = createVariable.DefaultInitialize(context);
}
thenLine.Add(expLine);
}
var thenBlock = Expression.Block(listOfThenVars.ToArray(), thenLine);
context.RemoveLevel();
LabelTarget label = Expression.Label(Guid.NewGuid().ToString());
var ifThenElse = Expression.IfThenElse(
conditionExpression,
thenBlock,
Expression.Break(label));
return Expression.Loop(ifThenElse, label);
}