Add extensionPoint GroovyUnresolvedHighlightFilter.

plugins/groovy/src/META-INF/plugin.xml

@@ -39,6 +39,8 @@
     <extensionPoint name="compilerExtension" interface="org.jetbrains.plugins.groovy.compiler.GroovyCompilerExtension"/>
     <extensionPoint name="scriptTypeDetector" interface="org.jetbrains.plugins.groovy.extensions.GroovyScriptTypeDetector"/>
     <extensionPoint name="namedArgumentProvider" interface="org.jetbrains.plugins.groovy.extensions.GroovyNamedArgumentProvider"/>
+    <extensionPoint name="unresolvedHighlightFilter" interface="org.jetbrains.plugins.groovy.extensions.GroovyUnresolvedHighlightFilter"/>
+    <extensionPoint name="unresolvedHighlightFileFilter" interface="org.jetbrains.plugins.groovy.extensions.GroovyUnresolvedHighlightFileFilter"/>
 
     <extensionPoint name="callExpressionTypeCalculator" interface="org.jetbrains.plugins.groovy.lang.psi.impl.statements.expressions.path.GrCallExpressionTypeCalculator"/>
 
@@ -61,6 +63,8 @@
     <positionManagerDelegate implementation="org.jetbrains.plugins.groovy.gant.GantPositionManagerHelper"/>
     <positionManagerDelegate implementation="org.jetbrains.plugins.groovy.gradle.GradlePositionManager"/>
 
+    <unresolvedHighlightFilter implementation="org.jetbrains.plugins.groovy.extensions.GroovyUnresolvedReferenceFilterByFile"/>
+
     <callExpressionTypeCalculator implementation="org.jetbrains.plugins.groovy.lang.psi.impl.statements.expressions.path.DefaultCallExpressionTypeCalculator" order="last" />
 
     <scriptTypeDetector implementation="org.jetbrains.plugins.groovy.gant.GantScriptTypeDetector" />

plugins/groovy/src/org/jetbrains/plugins/groovy/annotator/GroovyAnnotator.java

@@ -46,6 +46,7 @@ import org.jetbrains.plugins.groovy.annotator.intentions.*;
 import org.jetbrains.plugins.groovy.annotator.intentions.dynamic.DynamicMethodFix;
 import org.jetbrains.plugins.groovy.annotator.intentions.dynamic.DynamicPropertyFix;
 import org.jetbrains.plugins.groovy.config.GroovyConfigUtils;
+import org.jetbrains.plugins.groovy.extensions.GroovyUnresolvedHighlightFilter;
 import org.jetbrains.plugins.groovy.findUsages.LiteralConstructorReference;
 import org.jetbrains.plugins.groovy.highlighter.DefaultHighlighter;
 import org.jetbrains.plugins.groovy.lang.documentation.GroovyPresentationUtil;
@@ -238,6 +239,9 @@ public class GroovyAnnotator extends GroovyElementVisitor implements Annotator {
           return;
         }
       }
+
+      if (!GroovyUnresolvedHighlightFilter.shouldHighlight(referenceExpression)) return;
+
       registerReferenceFixes(referenceExpression, annotation);
       annotation.setTextAttributes(DefaultHighlighter.UNRESOLVED_ACCESS);
     }

plugins/groovy/src/org/jetbrains/plugins/groovy/extensions/GroovyUnresolvedHighlightFileFilter.java

@@ -0,0 +1,32 @@
+/*
+ * Copyright 2000-2011 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.jetbrains.plugins.groovy.extensions;
+
+import com.intellij.openapi.extensions.ExtensionPointName;
+import com.intellij.openapi.util.Key;
+import com.intellij.psi.PsiFile;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * @author Sergey Evdokimov
+ */
+public abstract class GroovyUnresolvedHighlightFileFilter {
+
+  public static final ExtensionPointName<GroovyUnresolvedHighlightFileFilter> EP_NAME = ExtensionPointName.create("org.intellij.groovy.unresolvedHighlightFileFilter");
+
+  public abstract boolean isReject(@NotNull PsiFile file);
+
+}

plugins/groovy/src/org/jetbrains/plugins/groovy/extensions/GroovyUnresolvedHighlightFilter.java

@@ -0,0 +1,38 @@
+/*
+ * Copyright 2000-2011 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.jetbrains.plugins.groovy.extensions;
+
+import com.intellij.openapi.extensions.ExtensionPointName;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.plugins.groovy.lang.psi.api.statements.expressions.GrReferenceExpression;
+
+/**
+ * @author Sergey Evdokimov
+ */
+public abstract class GroovyUnresolvedHighlightFilter {
+
+  public static final ExtensionPointName<GroovyUnresolvedHighlightFilter> EP_NAME = ExtensionPointName.create("org.intellij.groovy.unresolvedHighlightFilter");
+
+  public abstract boolean isReject(@NotNull GrReferenceExpression expression);
+
+  public static boolean shouldHighlight(@NotNull GrReferenceExpression expression) {
+    for (GroovyUnresolvedHighlightFilter filter : EP_NAME.getExtensions()) {
+      if (filter.isReject(expression)) return false;
+    }
+
+    return true;
+  }
+}

plugins/groovy/src/org/jetbrains/plugins/groovy/extensions/GroovyUnresolvedReferenceFilterByFile.java

@@ -0,0 +1,51 @@
+/*
+ * Copyright 2000-2011 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.jetbrains.plugins.groovy.extensions;
+
+import com.intellij.openapi.util.Key;
+import com.intellij.psi.PsiFile;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.plugins.groovy.lang.psi.api.statements.expressions.GrReferenceExpression;
+
+/**
+ * @author Sergey Evdokimov
+ */
+public final class GroovyUnresolvedReferenceFilterByFile extends GroovyUnresolvedHighlightFilter {
+
+  private static final Key<Boolean> KEY = Key.create("GroovyUnresolvedHighlightFileFilter");
+
+  @Override
+  public boolean isReject(@NotNull GrReferenceExpression expression) {
+    PsiFile file = expression.getContainingFile();
+
+    Boolean cachedValue = file.getUserData(KEY);
+
+    if (cachedValue != null) return cachedValue;
+
+    boolean res = true;
+
+    for (GroovyUnresolvedHighlightFileFilter filter : GroovyUnresolvedHighlightFileFilter.EP_NAME.getExtensions()) {
+      if (filter.isReject(file)) {
+        res = false;
+        break;
+      }
+    }
+
+    file.putUserData(KEY, res);
+
+    return res;
+  }
+}