Add support of backticks in JetPsiMatcher

idea/src/org/jetbrains/jet/plugin/util/JetPsiMatcher.java

@@ -16,6 +16,7 @@
 
 package org.jetbrains.jet.plugin.util;
 
+import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 import org.jetbrains.jet.lang.psi.*;
 
@@ -126,7 +127,7 @@ public class JetPsiMatcher {
 
         @Override
         public Boolean visitSimpleNameExpression(JetSimpleNameExpression expression, JetElement data) {
-            return expression.getText().equals(data.getText());
+            return checkIdentifierMatch(expression.getText(), data.getText());
         }
 
         @Override
@@ -254,4 +255,16 @@ public class JetPsiMatcher {
 
         return e1.accept(VISITOR, e2);
     }
+
+    @NotNull
+    private static String unquote(@NotNull String s) {
+        return (s.startsWith("`") && s.endsWith("`")) ? s.substring(1, s.length() - 1) : s;
+    }
+
+    public static boolean checkIdentifierMatch(@Nullable String s1, @Nullable String s2) {
+        if (s1 == s2) return true;
+        if (s1 == null || s2 == null) return false;
+
+        return unquote(s1).equals(unquote(s2));
+    }
 }

idea/testData/jetPsiMatcher/expressions/simpleName/simpleName2.kt

@@ -0,0 +1 @@
+test

idea/testData/jetPsiMatcher/expressions/simpleName/simpleName2.kt.2

@@ -0,0 +1 @@
+`test`

idea/tests/org/jetbrains/jet/psi/JetPsiMatcherTest.java

@@ -250,6 +250,11 @@ public class JetPsiMatcherTest extends AbstractJetPsiMatcherTest {
                 doTestExpressions("idea/testData/jetPsiMatcher/expressions/simpleName/simpleName.kt");
             }
             
+            @TestMetadata("simpleName2.kt")
+            public void testSimpleName2() throws Exception {
+                doTestExpressions("idea/testData/jetPsiMatcher/expressions/simpleName/simpleName2.kt");
+            }
+            
             @TestMetadata("_simpleName.kt")
             public void test_simpleName() throws Exception {
                 doTestExpressions("idea/testData/jetPsiMatcher/expressions/simpleName/_simpleName.kt");