public HttpResponseMessage <CompileResult> Compile([FromBody] EvalRequest request)
{
if (request == null)
{
throw new WebArgumentNullException("request");
}
if (request.Parameters == null)
{
request.Parameters = new List <ExpressionParameter>();
}
try
{
using (Profiler.Measure("CalcEditorController.Compile"))
{
List <ExpressionParameter> paramsToCompile = request.Parameters.Where(p => p.TypeName == "None" && !string.IsNullOrEmpty(p.Expr)).ToList( );
paramsToCompile.Sort((x, y) => y.Expr.IndexOf(x.Name, StringComparison.Ordinal) >= 0 ? -1 : +1);
int retries = paramsToCompile.Count( );
var innerRequest = new EvalRequest
{
Context = request.Context,
Host = request.Host,
ExpectedResultType = request.ExpectedResultType
};
while (retries-- > 0 && paramsToCompile.Count > 0)
{
foreach (ExpressionParameter paramToCompile in paramsToCompile)
{
innerRequest.Expression = paramToCompile.Expr;
innerRequest.Parameters = request.Parameters.Where(p => p.TypeName != "None").ToList( );
CompileResult compileResult = InnerCompile(innerRequest);
if (compileResult.ResultType != DataType.None && string.IsNullOrEmpty(compileResult.ErrorMessage))
{
paramToCompile.TypeName = compileResult.ResultType.ToString( );
}
}
paramsToCompile = request.Parameters.Where(p => p.TypeName == "None" && !string.IsNullOrEmpty(p.Expr)).ToList( );
}
return(new HttpResponseMessage <CompileResult>(InnerCompile(request)));
}
}
catch (Exception ex)
{
throw new Exception(string.Format("Exception evaluating expression {0}", request.Expression), ex);
}
}
/// <summary>
/// Inners the eval.
/// </summary>
/// <param name="request">The request.</param>
/// <returns></returns>
private static EvalResult InnerEval(EvalRequest request)
{
try
{
var settings = new BuilderSettings( );
if (!string.IsNullOrEmpty(request.Context))
{
long typeId;
EntityRef contextType = long.TryParse(request.Context, out typeId)
? new EntityRef(typeId)
: new EntityRef(request.Context);
settings.RootContextType = ExprTypeHelper.EntityOfType(contextType);
}
if (!string.IsNullOrEmpty(request.Host))
{
settings.ScriptHost = ( ScriptHostType )Enum.Parse(typeof(ScriptHostType), request.Host);
}
var paramTypes = new Dictionary <string, ExprType>( );
var paramValues = new Dictionary <string, object>( );
if (request.Parameters != null)
{
foreach (ExpressionParameter p in request.Parameters)
{
var type = ( DataType )Enum.Parse(typeof(DataType), p.TypeName);
if (type == DataType.Entity)
{
long typeId;
paramTypes[p.Name] = long.TryParse(p.EntityTypeId, out typeId)
? ExprTypeHelper.EntityOfType(new EntityRef(typeId))
: ExprTypeHelper.EntityOfType(new EntityRef(p.EntityTypeId));
}
else
{
paramTypes[p.Name] = new ExprType(type);
}
paramTypes[p.Name].IsList = p.IsList;
paramValues[p.Name] = DataTypeHelpers.StringToObject(p.StringValue, type);
}
settings.ParameterNames = paramTypes.Keys.ToList( );
settings.StaticParameterResolver = paramName =>
{
ExprType result2;
return(paramTypes.TryGetValue(paramName, out result2) ? result2 : null);
};
}
// Compile
IExpression expression = Factory.ExpressionCompiler.Compile(request.Expression, settings);
// used for runtime parameters
EvaluationSettings evalSettings = new EvaluationSettings
{
TimeZoneName = TimeZoneHelper.SydneyTimeZoneName,
ParameterResolver = paramName =>
{
object result1;
return(paramValues.TryGetValue(paramName, out result1) ? result1 : null);
}
};
object result = Factory.ExpressionRunner.Run(expression, evalSettings).Value;
// Return success result
return(new EvalResult
{
Value = result.ToString( ),
ResultType = expression.ResultType.Type,
IsList = expression.ResultType.IsList,
EntityTypeId = expression.ResultType.EntityTypeId
});
}
catch (ParseException ex)
{
// Return script error result
return(new EvalResult
{
ErrorMessage = ex.Message
});
}
}
/// <summary>
/// Inners the compile.
/// </summary>
/// <param name="request">The request.</param>
/// <returns></returns>
private static CompileResult InnerCompile(EvalRequest request)
{
try
{
var settings = new BuilderSettings( );
if (!string.IsNullOrEmpty(request.Context))
{
EntityRef contextType = WebApiHelpers.GetId(request.Context);
settings.RootContextType = ExprTypeHelper.EntityOfType(contextType);
}
if (!string.IsNullOrEmpty(request.Host))
{
settings.ScriptHost = ( ScriptHostType )Enum.Parse(typeof(ScriptHostType), request.Host);
}
if (request.ExpectedResultType != null)
{
settings.ExpectedResultType = request.ExpectedResultType.ToExprType();
}
var paramTypes = new Dictionary <string, ExprType>( );
if (request.Parameters != null)
{
foreach (ExpressionParameter p in request.Parameters)
{
if (p.Name == null)
{
throw new WebArgumentException("Param 'name' was not specified");
}
if (p.TypeName == null)
{
throw new WebArgumentException("Param 'type' was not specified");
}
var type = ( DataType )Enum.Parse(typeof(DataType), p.TypeName);
if (type == DataType.Entity)
{
if (p.EntityTypeId == null)
{
throw new WebArgumentException("Param 'entityTypeId' was not specified");
}
long typeId;
paramTypes[p.Name] = long.TryParse(p.EntityTypeId, out typeId)
? ExprTypeHelper.EntityOfType(new EntityRef(typeId))
: ExprTypeHelper.EntityOfType(new EntityRef(p.EntityTypeId));
}
else
{
paramTypes[p.Name] = new ExprType(type);
}
paramTypes[p.Name].IsList = p.IsList;
}
settings.ParameterNames = paramTypes.Keys.ToList( );
settings.StaticParameterResolver = paramName =>
{
ExprType result2;
return(paramTypes.TryGetValue(paramName, out result2) ? result2 : null);
};
}
// Compile
IExpression expression = Factory.ExpressionCompiler.Compile(request.Expression, settings);
// Return success result
return(new CompileResult
{
ResultType = expression.ResultType.Type,
IsList = expression.ResultType.IsList,
EntityTypeId = expression.ResultType.EntityTypeId
});
}
catch (ParseException ex)
{
// Return script error result
return(new CompileResult
{
ErrorMessage = ex.Message
});
}
}