REPL: fix open parenthesis not triggering "incomplete"

Check if all of the syntax errors are at EOF, not that there's a single one.
In case of open parenthesis two syntax errors are reported for some reason

compiler/cli/src/org/jetbrains/jet/cli/common/messages/AnalyzerWithCompilerReport.java

@@ -167,32 +167,32 @@ public final class AnalyzerWithCompilerReport {
 
     public static class SyntaxErrorReport {
         private final boolean hasErrors;
-        private final boolean onlyErrorAtEof;
+        private final boolean allErrorsAtEof;
 
-        public SyntaxErrorReport(boolean hasErrors, boolean onlyErrorAtEof) {
+        public SyntaxErrorReport(boolean hasErrors, boolean allErrorsAtEof) {
             this.hasErrors = hasErrors;
-            this.onlyErrorAtEof = onlyErrorAtEof;
+            this.allErrorsAtEof = allErrorsAtEof;
         }
 
         public boolean isHasErrors() {
             return hasErrors;
         }
 
-        public boolean isOnlyErrorAtEof() {
+        public boolean isAllErrorsAtEof() {
-            return onlyErrorAtEof;
+            return allErrorsAtEof;
         }
     }
 
     public static SyntaxErrorReport reportSyntaxErrors(@NotNull final PsiElement file, @NotNull final MessageCollector messageCollector) {
         class ErrorReportingVisitor extends AnalyzingUtils.PsiErrorElementVisitor {
             boolean hasErrors = false;
-            boolean onlyErrorAtEof = false;
+            boolean allErrorsAtEof = true;
 
             private <E extends PsiElement> void reportDiagnostic(E element, DiagnosticFactory0<E> factory, String message) {
                 MyDiagnostic<?> diagnostic = new MyDiagnostic<E>(element, factory, message);
                 AnalyzerWithCompilerReport.reportDiagnostic(diagnostic, messageCollector);
-                if (element.getTextRange().getStartOffset() == file.getTextRange().getEndOffset()) {
+                if (element.getTextRange().getStartOffset() != file.getTextRange().getEndOffset()) {
-                    onlyErrorAtEof = !hasErrors;
+                    allErrorsAtEof = false;
                 }
                 hasErrors = true;
             }
@@ -207,7 +207,7 @@ public final class AnalyzerWithCompilerReport {
 
         file.accept(visitor);
 
-        return new SyntaxErrorReport(visitor.hasErrors, visitor.onlyErrorAtEof);
+        return new SyntaxErrorReport(visitor.hasErrors, visitor.allErrorsAtEof);
     }
 
     @Nullable

compiler/cli/src/org/jetbrains/jet/cli/jvm/repl/ReplInterpreter.java

@@ -222,7 +222,7 @@ public class ReplInterpreter {
         AnalyzerWithCompilerReport.SyntaxErrorReport syntaxErrorReport =
                 AnalyzerWithCompilerReport.reportSyntaxErrors(psiFile, errorCollector);
 
-        if (syntaxErrorReport.isOnlyErrorAtEof()) {
+        if (syntaxErrorReport.isHasErrors() && syntaxErrorReport.isAllErrorsAtEof()) {
             previousIncompleteLines.add(line);
             return LineResult.incomplete();
         }

compiler/testData/repl/multiline/multilineFunctionInvocation.repl

@@ -0,0 +1,10 @@
+>>> fun concat(a: String, b: String, c: String, d: String) = "$a$b$c$d"
+>>> concat(
+...     "hel",
+...     "lo"
+...     ,
+...     "wo" +
+...     "r", "l" +
+...     "d"
+... )
+helloworld

compiler/testData/repl/multiline/openParenthesisIncomplete.repl

@@ -0,0 +1,4 @@
+>>> fun sum(x: Int, y: Int) = x + y
+>>> sum(
+... 23,19)
+42

compiler/tests/org/jetbrains/jet/repl/ReplInterpreterTestGenerated.java

@@ -31,7 +31,7 @@ import org.jetbrains.jet.repl.AbstractReplInterpreterTest;
 /** This class is generated by {@link org.jetbrains.jet.generators.tests.TestsPackage}. DO NOT MODIFY MANUALLY */
 @SuppressWarnings("all")
 @TestMetadata("compiler/testData/repl")
-@InnerTestClasses({ReplInterpreterTestGenerated.Classes.class, ReplInterpreterTestGenerated.Objects.class, ReplInterpreterTestGenerated.Reflection.class})
+@InnerTestClasses({ReplInterpreterTestGenerated.Classes.class, ReplInterpreterTestGenerated.Multiline.class, ReplInterpreterTestGenerated.Objects.class, ReplInterpreterTestGenerated.Reflection.class})
 public class ReplInterpreterTestGenerated extends AbstractReplInterpreterTest {
     public void testAllFilesPresentInRepl() throws Exception {
         JetTestUtils.assertAllTestsPresentByMetadata(this.getClass(), "org.jetbrains.jet.generators.tests.TestsPackage", new File("compiler/testData/repl"), Pattern.compile("^(.+)\\.repl$"), true);
@@ -82,16 +82,6 @@ public class ReplInterpreterTestGenerated extends AbstractReplInterpreterTest {
         doTest("compiler/testData/repl/imports.repl");
     }
     
-    @TestMetadata("multiline.repl")
-    public void testMultiline() throws Exception {
-        doTest("compiler/testData/repl/multiline.repl");
-    }
-    
-    @TestMetadata("multiline3.repl")
-    public void testMultiline3() throws Exception {
-        doTest("compiler/testData/repl/multiline3.repl");
-    }
-    
     @TestMetadata("simple.repl")
     public void testSimple() throws Exception {
         doTest("compiler/testData/repl/simple.repl");
@@ -160,6 +150,34 @@ public class ReplInterpreterTestGenerated extends AbstractReplInterpreterTest {
         
     }
     
+    @TestMetadata("compiler/testData/repl/multiline")
+    public static class Multiline extends AbstractReplInterpreterTest {
+        public void testAllFilesPresentInMultiline() throws Exception {
+            JetTestUtils.assertAllTestsPresentByMetadata(this.getClass(), "org.jetbrains.jet.generators.tests.TestsPackage", new File("compiler/testData/repl/multiline"), Pattern.compile("^(.+)\\.repl$"), true);
+        }
+        
+        @TestMetadata("functionOnSeveralLines.repl")
+        public void testFunctionOnSeveralLines() throws Exception {
+            doTest("compiler/testData/repl/multiline/functionOnSeveralLines.repl");
+        }
+        
+        @TestMetadata("multilineFunctionInvocation.repl")
+        public void testMultilineFunctionInvocation() throws Exception {
+            doTest("compiler/testData/repl/multiline/multilineFunctionInvocation.repl");
+        }
+        
+        @TestMetadata("openParenthesisIncomplete.repl")
+        public void testOpenParenthesisIncomplete() throws Exception {
+            doTest("compiler/testData/repl/multiline/openParenthesisIncomplete.repl");
+        }
+        
+        @TestMetadata("simpleFunctionBodyOnNextLine.repl")
+        public void testSimpleFunctionBodyOnNextLine() throws Exception {
+            doTest("compiler/testData/repl/multiline/simpleFunctionBodyOnNextLine.repl");
+        }
+        
+    }
+    
     @TestMetadata("compiler/testData/repl/objects")
     public static class Objects extends AbstractReplInterpreterTest {
         public void testAllFilesPresentInObjects() throws Exception {
@@ -195,6 +213,7 @@ public class ReplInterpreterTestGenerated extends AbstractReplInterpreterTest {
         TestSuite suite = new TestSuite("ReplInterpreterTestGenerated");
         suite.addTestSuite(ReplInterpreterTestGenerated.class);
         suite.addTestSuite(Classes.class);
+        suite.addTestSuite(Multiline.class);
         suite.addTestSuite(Objects.class);
         suite.addTestSuite(Reflection.class);
         return suite;