From 4b6ee62f0779dde7e1daf45060d7679c9125efc9 Mon Sep 17 00:00:00 2001
From: Alexander Luzgarev <mahalex@gmail.com>
Date: Sat, 8 Dec 2018 13:47:29 +0100
Subject: [PATCH] Fix parsing of expression statements

---
 Parser.Tests/MParserShould.cs   | 11 +++++++++++
 Parser/Internal/MParserGreen.cs |  4 +---
 2 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/Parser.Tests/MParserShould.cs b/Parser.Tests/MParserShould.cs
index bb1fb01..8171f41 100644
--- a/Parser.Tests/MParserShould.cs
+++ b/Parser.Tests/MParserShould.cs
@@ -22,6 +22,17 @@ namespace Parser.Tests
             Assert.IsType<AssignmentExpressionSyntaxNode>(((ExpressionStatementSyntaxNode)assignment).Expression);
         }
 
+        [Fact]
+        public void ParseExpressionStatement()
+        {
+            var text = "2 + 3";
+            var sut = GetSut(text);
+            var actual = sut.Parse();
+            var statement = actual.Root.StatementList[0].AsNode();
+            Assert.IsType<ExpressionStatementSyntaxNode>(statement);
+            Assert.IsType<BinaryOperationExpressionSyntaxNode>(((ExpressionStatementSyntaxNode)statement).Expression);
+        }
+
         [Fact]
         public void ParseAssignmentExpression_Incomplete()
         {
diff --git a/Parser/Internal/MParserGreen.cs b/Parser/Internal/MParserGreen.cs
index a578042..f7de28f 100644
--- a/Parser/Internal/MParserGreen.cs
+++ b/Parser/Internal/MParserGreen.cs
@@ -1070,8 +1070,6 @@ namespace Parser.Internal
                     case "elseif":
                     case "end":
                         return null;
-                    default:
-                        return ParseExpressionStatement();
                 }
             }
 
@@ -1084,7 +1082,7 @@ namespace Parser.Internal
             {
                 return Factory.EmptyStatementSyntax(EatToken());
             }
-            throw new ParsingException($"Unexpected token \"{CurrentToken}\" at {CurrentPosition}.");
+            return ParseExpressionStatement();
         }
         
         private SyntaxList ParseStatementList()