private TemplateExpressionEvaluationHelper GetTemplateFunctionEvaluationHelper()

in src/Analyzer.TemplateProcessor/ArmTemplateProcessor.cs [421:459]

32 lines of code
3 McCabe index (conditional complexity)


        private TemplateExpressionEvaluationHelper GetTemplateFunctionEvaluationHelper(Template template)
        {
            var helper = new TemplateExpressionEvaluationHelper();

            var functionsLookup = template.GetFunctionDefinitions().ToInsensitiveDictionary(keySelector: function => function.Key, elementSelector: function => function.Function);

            var parametersLookup = template.Parameters.CoalesceEnumerable().ToInsensitiveDictionary(
                keySelector: parameter => parameter.Key,
                elementSelector: parameter => parameter.Value.Value);

            var variablesLookup = template.Variables.CoalesceEnumerable().ToInsensitiveDictionary(
                keySelector: variable => variable.Key,
                elementSelector: variable => variable.Value);

            helper.Initialize(
                metadata: template.Metadata,
                functionsLookup: functionsLookup,
                parametersLookup: parametersLookup,
                variablesLookup: variablesLookup,
                validationContext: null,
                metricsRecorder: null);

            // Set reference lookup
            helper.OnGetTemplateReference = (TemplateReference templateReference) =>
            {
                foreach (var resource in template.Resources)
                {
                    if (new[] { resource.Name.Value, resource.OriginalName }.Contains(templateReference.ResourceId))
                    {
                        return resource.Properties?.Value;
                    }
                }
                return ExpressionsEngine.EvaluateLanguageExpressionsRecursive(
                    root: templateReference.ResourceId,
                    evaluationContext: helper.EvaluationContext);
            };

            return helper;
        }