Use first text range for diagnostics with multiple ranges.

Move TEXT_RANGE_COMPARATOR to DiagnosticUtils.

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

@@ -45,17 +45,6 @@ import java.util.List;
  */
 public final class AnalyzerWithCompilerReport {
 
-    @NotNull
-    private static final Comparator<TextRange> TEXT_RANGE_COMPARATOR = new Comparator<TextRange>() {
-        @Override
-        public int compare(TextRange o1, TextRange o2) {
-            if (o1.getStartOffset() != o2.getStartOffset()) {
-                return o1.getStartOffset() - o2.getStartOffset();
-            }
-            return o1.getEndOffset() - o2.getEndOffset();
-        }
-    };
-
     @NotNull
     private static CompilerMessageSeverity convertSeverity(@NotNull Severity severity) {
         switch (severity) {
@@ -143,11 +132,11 @@ public final class AnalyzerWithCompilerReport {
                 String path2 = d2.getPsiFile().getViewProvider().getVirtualFile().getPath();
                 if (!path1.equals(path2)) return path1.compareTo(path2);
 
-                TextRange range1 = d1.getTextRanges().iterator().next();
-                TextRange range2 = d2.getTextRanges().iterator().next();
+                TextRange range1 = DiagnosticUtils.firstRange(d1.getTextRanges());
+                TextRange range2 = DiagnosticUtils.firstRange(d2.getTextRanges());
 
                 if (!range1.equals(range2)) {
-                    return TEXT_RANGE_COMPARATOR.compare(range1, range2);
+                    return DiagnosticUtils.TEXT_RANGE_COMPARATOR.compare(range1, range2);
                 }
 
                 return d1.getFactory().getName().compareTo(d2.getFactory().getName());

compiler/frontend/src/org/jetbrains/jet/lang/diagnostics/DiagnosticUtils.java

@@ -26,17 +26,29 @@ import com.intellij.psi.PsiFile;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 import org.jetbrains.jet.lang.descriptors.DeclarationDescriptor;
-import org.jetbrains.jet.lang.descriptors.SimpleFunctionDescriptor;
 import org.jetbrains.jet.lang.psi.JetExpression;
 import org.jetbrains.jet.lang.resolve.BindingContext;
 import org.jetbrains.jet.lang.resolve.BindingContextUtils;
 
+import java.util.Collections;
+import java.util.Comparator;
 import java.util.List;
 
 /**
  * @author abreslav
  */
 public class DiagnosticUtils {
+    @NotNull
+    public static final Comparator<TextRange> TEXT_RANGE_COMPARATOR = new Comparator<TextRange>() {
+        @Override
+        public int compare(TextRange o1, TextRange o2) {
+            if (o1.getStartOffset() != o2.getStartOffset()) {
+                return o1.getStartOffset() - o2.getStartOffset();
+            }
+            return o1.getEndOffset() - o2.getEndOffset();
+        }
+    };
+
     private DiagnosticUtils() {
     }
 
@@ -106,7 +118,7 @@ public class DiagnosticUtils {
         PsiFile file = diagnostic.getPsiFile();
         List<TextRange> textRanges = diagnostic.getTextRanges();
         if (textRanges.isEmpty()) return LineAndColumn.NONE;
-        TextRange firstRange = textRanges.iterator().next();
+        TextRange firstRange = firstRange(textRanges);
         return getLineAndColumnInPsiFile(file, firstRange);
     }
 
@@ -142,6 +154,11 @@ public class DiagnosticUtils {
         }
     }
 
+    @NotNull
+    public static TextRange firstRange(@NotNull List<TextRange> ranges) {
+        return Collections.min(ranges, TEXT_RANGE_COMPARATOR);
+    }
+
     public static final class LineAndColumn {
 
         public static final LineAndColumn NONE = new LineAndColumn(-1, -1);

compiler/testData/cli/multipleTextRangesInDiagnosticsOrder.kt

@@ -0,0 +1,7 @@
+trait A {
+    public val c: Int
+}
+
+trait B: A {
+    override protected private val c: Int
+}

compiler/testData/cli/multipleTextRangesInDiagnosticsOrder.out

@@ -0,0 +1,4 @@
+ERROR: $TESTDATA_DIR$/multipleTextRangesInDiagnosticsOrder.kt: (6, 14) Cannot weaken access privilege 'public' for 'c' in 'A'
+ERROR: $TESTDATA_DIR$/multipleTextRangesInDiagnosticsOrder.kt: (6, 14) Incompatible modifiers: 'private protected'
+ERROR: $TESTDATA_DIR$/multipleTextRangesInDiagnosticsOrder.kt: (6, 24) Incompatible modifiers: 'private protected'
+COMPILATION_ERROR

compiler/tests/org/jetbrains/jet/cli/jvm/CliTest.java

@@ -116,6 +116,14 @@ public class CliTest {
         executeCompilerCompareOutput(args);
     }
 
+    @Test
+    public void multipleTextRangesInDiagnosticsOrder() throws Exception {
+        String[] args = {
+                "-src", "compiler/testData/cli/multipleTextRangesInDiagnosticsOrder.kt",
+                "-output", tmpdir.getTmpDir().getPath()};
+        executeCompilerCompareOutput(args);
+    }
+
     @Test
     public void help() throws Exception {
         executeCompilerCompareOutput(new String[] {"-help"});