public static async Task Render(Value condition, TextGeneratorContext context)
{
if (condition is BinaryCondition binary)
{
await Render(binary.Left, context);
await RenderValue(binary, context);
await Render(binary.Right, context);
}
else if (condition is UnaryCondition unary)
{
await RenderValue(unary, context);
await Render(unary.Condition, context);
await RenderValue(unary, context, false);
}
else
{
await RenderValue(condition, context);
}
}
private static Task RenderValue(Value value, TextGeneratorContext context, bool start = true)
{
switch (value)
{
case And and:
return(context.WriteString(" and "));
case Equal equal:
return(context.WriteString(" == "));
case False falseValue:
return(context.WriteString("false"));
case GreaterThan greaterThan:
return(context.WriteString(" > "));
case GreaterThanEqual greaterThanEqual:
return(context.WriteString(" >= "));
case LessThan lessThan:
return(context.WriteString(" < "));
case LessThanEqual lessThanEqual:
return(context.WriteString(" <= "));
case LiteralValue literalValue:
var litValue = literalValue.Value switch
{
string s => $"'{s}'",
bool b => b.ToString().ToLower(),
_ => literalValue.Value.ToString()
};
return(context.WriteString(litValue));
case Not not:
if (start)
{
return(context.WriteString("!"));
}
return(Task.FromResult(context));
case NotEqual notEqual:
return(context.WriteString(" != "));
case Or or:
return(context.WriteString(" or "));
case True trueValue:
return(context.WriteString("true"));
case ValueWrapper valueWrapper:
return(RenderValue(valueWrapper.Value, context));
case Variable variable:
return(context.WriteString(variable.Name));
case Group group:
return(context.WriteString(start ? "( " : " )"));
default:
throw new ArgumentOutOfRangeException(nameof(value));
}
}