/// <summary>
/// Validate the statements for errors.
/// </summary>
/// <param name="stmts">Statements to validate</param>
/// <returns></returns>
public RunResult Validate(List<Expr> stmts)
{
var start = DateTime.Now;
if (stmts == null || stmts.Count == 0)
return new RunResult(start, start, true, "No nodes to validate");
_ctx = stmts[0].Ctx;
// Reset the errors.
_errors = new List<ScriptError>();
_parseStk = new ParseStackManager();
// Use the visitor to walk the AST tree of statements/expressions
var visitor = new AstVisitor((astnode1) => Validate(astnode1), (astnode2) =>OnNodeEnd(astnode2));
visitor.Visit(stmts);
var end = DateTime.Now;
// Now check for success.
bool success = _errors.Count == 0;
_results = new RunResult(start, end, success, _errors);
_results.Errors = _errors;
return _results;
}
/// <summary>
/// Builds up a phase result from start, end, success/message fields.
/// </summary>
/// <param name="start"></param>
/// <param name="end"></param>
/// <param name="success"></param>
/// <param name="message"></param>
/// <returns></returns>
public PhaseResult ToPhaseResult(DateTime start, DateTime end, bool success, string message)
{
var runResult = new RunResult(start, end, success, message);
return new PhaseResult(runResult);
}
/// <summary>
/// Empty phase result, 0 time duration.
/// </summary>
/// <param name="success"></param>
/// <param name="message"></param>
/// <returns></returns>
public PhaseResult ToEmptyPhaseResult(bool success, string message)
{
var now = DateTime.Now;
var runResult = new RunResult(now, now, success, message);
return new PhaseResult(runResult);
}
/// <summary>
/// Initialize
/// </summary>
/// <param name="started"></param>
/// <param name="ended"></param>
/// <param name="success"></param>
/// <param name="message"></param>
/// <param name="result"></param>
public PhaseResult(RunResult result)
: base(result.StartTime, result.EndTime, result.Success, result.Message)
{
this.Errors = result.Errors;
this.Result = result;
}
private void Execute(Action action, Func<string> exceptionMessageFetcher = null)
{
DateTime start = DateTime.Now;
bool success = true;
string message = string.Empty;
Exception scriptError = null;
try
{
action();
}
catch (Exception ex)
{
success = false;
if (ex is LangException)
{
var lex = ex as LangException;
const string langerror = "{0} : {1} at line : {2}, position: {3}";
message = string.Format(langerror, lex.Error.ErrorType, lex.Message, lex.Error.Line, lex.Error.Column);
}
else message = ex.Message;
scriptError = ex;
if (exceptionMessageFetcher != null)
message += exceptionMessageFetcher();
}
DateTime end = DateTime.Now;
_runResult = new RunResult(start, end, success, message);
_runResult.Ex = scriptError;
}
/// <summary>
/// Executes the script
/// </summary>
/// <param name="script">Script text</param>
/// <param name="clearExistingCode">Whether or not to clear existing parsed code and start fresh.</param>
public void Execute(string script, bool clearExistingCode, bool resetScript, params IPhase[] phases)
{
this.InitPlugins();
if(_parser != null)
{
var execution = new Execution();
execution.Ctx = _context;
EvalHelper.Ctx = _context;
_parser.OnDemandEvaluator = execution;
}
var phaseExecutor = new PhaseExecutor();
// 1. Create the execution phase
if (clearExistingCode)
{
_phaseCtx = new PhaseContext();
_phaseCtx.Ctx = _context;
}
if (resetScript)
_phaseCtx.ScriptText = script;
var phasesList = phases.ToList();
var result = phaseExecutor.Execute(script, _phaseCtx, _context, phasesList);
this._runResult = result.Result;
}