protected internal override Value RecursiveCollectUnresolvedVariables(IEvalContext ctx)
{
SubExpressions[0].RecursiveCollectUnresolvedVariables(ctx);
SubExpressions[1].RecursiveCollectUnresolvedVariables(ctx);
string output = "X";
if (m_VariableName != null)
{
m_LocalContext = new VariableValueResolver();
m_LocalContext.SetVariable(m_VariableName, output);
}
return(new StringValue(output));
}
public override Value Evaluate(IEvalContext ctx)
{
string command = SubExpressions[0].Evaluate(ctx).ToString();
string workdir = SubExpressions[1].Evaluate(ctx).ToString();
string exec_output = m_Evaluator.Evaluate(m_ExecPeriodSecs, command, workdir);
if (m_VariableName != null)
{
m_LocalContext = new VariableValueResolver();
m_LocalContext.SetVariable(m_VariableName, exec_output);
}
return(new StringValue(exec_output));
}
Expression Parse(string s)
{
try
{
VariableValueResolver compile_time_constants = new VariableValueResolver();
compile_time_constants.SetVariable("true", true);
compile_time_constants.SetVariable("false", false);
Parser parser = new Parser(s, compile_time_constants);
return(parser.Parse());
}
catch (ParserException ex)
{
Console.WriteLine("Parser Exception:");
Console.WriteLine(ex.InputText);
string indent = new string(' ', ex.ErrorPos);
Console.WriteLine("{0}^", indent);
Console.WriteLine("{0}{1}", indent, ex.ErrorMessage);
throw ex;
}
}
