Sync

.idea/.idea.VAR.ExpressionEvaluator/.idea/.gitignore

@@ -0,0 +1,13 @@
+# Default ignored files
+/shelf/
+/workspace.xml
+# Rider ignored files
+/.idea.VAR.ExpressionEvaluator.iml
+/modules.xml
+/contentModel.xml
+/projectSettingsUpdater.xml
+# Editor-based HTTP Client requests
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml

.idea/.idea.VAR.ExpressionEvaluator/.idea/encodings.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Encoding" addBOMForNewFiles="with BOM under Windows, with no BOM otherwise" />
+</project>

.idea/.idea.VAR.ExpressionEvaluator/.idea/indexLayout.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="UserContentModel">
+    <attachedFolders />
+    <explicitIncludes />
+    <explicitExcludes />
+  </component>
+</project>

.idea/.idea.VAR.ExpressionEvaluator/.idea/vcs.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="" vcs="Git" />
+  </component>
+</project>

VAR.ExpressionEvaluator.Tests/ParserTests.cs

@@ -241,6 +241,19 @@ namespace VAR.ExpressionEvaluator.Tests
             Assert.Equal(4m, result);
         }
 
+        [Fact]
+        public void Functions__ZeroParameters()
+        {
+            EvaluationContext evaluationContex = new EvaluationContext();
+            evaluationContex.SetFunction("constant", (parameters) =>
+            {
+                return 9m;
+            });
+            string expression = "constant()";
+            object result = Parser.EvaluateString(expression, evaluationContex);
+            Assert.Equal(9m, result);
+        }
+
         #endregion Functions
 
         #region Strings
@@ -252,6 +265,14 @@ namespace VAR.ExpressionEvaluator.Tests
             object result = Parser.EvaluateString(expression);
             Assert.Equal("Hello World", result);
         }
+        
+        [Fact]
+        public void Strings__Contatenate_Hello_World_SimpleQuotes()
+        {
+            string expression = "'Hello' + ' ' +'World'";
+            object result = Parser.EvaluateString(expression);
+            Assert.Equal("Hello World", result);
+        }
 
         [Fact]
         public void Strings__Contatenate_Hello_World_WithVariables()

VAR.ExpressionEvaluator/Parser.cs

@@ -239,15 +239,18 @@ namespace VAR.ExpressionEvaluator
                 {
                     _tokenizer.NextToken();
                     var parameters = new List<IExpressionNode>();
-                    while (true)
+                    if (_tokenizer.Token != Token.ParenthesisEnd)
                     {
-                        parameters.Add(ParseBooleanOp());
-                        if (_tokenizer.Token == Token.Comma)
+                        while (true)
                         {
-                            _tokenizer.NextToken();
-                            continue;
+                            parameters.Add(ParseBooleanOp());
+                            if (_tokenizer.Token == Token.Comma)
+                            {
+                                _tokenizer.NextToken();
+                                continue;
+                            }
+                            break;
                         }
-                        break;
                     }
                     if (_tokenizer.Token != Token.ParenthesisEnd)
                     {

VAR.ExpressionEvaluator/VAR.ExpressionEvaluator.csproj

@@ -8,7 +8,7 @@
   <PropertyGroup>
     <PackageId>VAR.ExpressionEvaluator</PackageId>
     <Title>VAR.ExpressionEvaluator</Title>
-    <Version>0.2.7</Version>
+    <Version>0.2.8</Version>
     <Description>Expression Evaluation Library</Description>
     <Authors>VAR</Authors>
     <Company>VAR</Company>