Assert in hashfiles that executionContext is available

src/Runner.Worker/ActionRunner.cs

@@ -181,7 +181,7 @@ namespace GitHub.Runner.Worker
             else
             {
                 var templateEvaluator = ExecutionContext.ToPipelineTemplateEvaluator();
-                inputs = templateEvaluator.EvaluateStepInputs(Action.Inputs, ExecutionContext.ExpressionValues, ExecutionContext.ExpressionFunctions);
+                inputs = templateEvaluator.EvaluateStepInputs(Action.Inputs, ExecutionContext.ExpressionValues, ExecutionContext.ExpressionFunctions, ExecutionContext.ToExpressionState());
             }
 
             var userInputs = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
@@ -355,7 +355,7 @@ namespace GitHub.Runner.Worker
         {
             DictionaryContextData expressionValues = ExecutionContext.GetExpressionValues(stepHost);
             var templateEvaluator = ExecutionContext.ToPipelineTemplateEvaluator();
-            var inputs = templateEvaluator.EvaluateStepInputs(Action.Inputs, expressionValues, ExecutionContext.ExpressionFunctions);
+            var inputs = templateEvaluator.EvaluateStepInputs(Action.Inputs, expressionValues, ExecutionContext.ExpressionFunctions, ExecutionContext.ToExpressionState());
 
             return inputs;
         }

src/Runner.Worker/Expressions/HashFilesFunction.cs

@@ -29,6 +29,9 @@ namespace GitHub.Runner.Worker.Expressions
             githubContext.TryGetValue(PipelineTemplateConstants.Workspace, out var workspace);
             var workspaceData = workspace as StringContextData;
             ArgUtil.NotNull(workspaceData, nameof(workspaceData));
+            var executionContext = templateContext.State[nameof(IExecutionContext)] as IExecutionContext;
+            ArgUtil.NotNull(executionContext, nameof(executionContext));
+            
 
             string githubWorkspace = workspaceData.Value;
             bool followSymlink = false;

src/Sdk/DTPipelines/Pipelines/ObjectTemplating/PipelineTemplateEvaluator.cs

@@ -164,13 +164,14 @@ namespace GitHub.DistributedTask.Pipelines.ObjectTemplating
         public Dictionary<String, String> EvaluateStepInputs(
             TemplateToken token,
             DictionaryContextData contextData,
-            IList<IFunctionInfo> expressionFunctions)
+            IList<IFunctionInfo> expressionFunctions,
+            IEnumerable<KeyValuePair<String, Object>> expressionState = null)
         {
             var result = default(Dictionary<String, String>);
 
             if (token != null && token.Type != TokenType.Null)
             {
-                var context = CreateContext(contextData, expressionFunctions);
+                var context = CreateContext(contextData, expressionFunctions, expressionState);
                 try
                 {
                     token = TemplateEvaluator.Evaluate(context, PipelineTemplateConstants.StepWith, token, 0, null, omitHeader: true);