IDEA-50450 Gradle code insight

Basic gradle code insight infrastructure

plugins/gradle/src/org/jetbrains/plugins/gradle/service/resolve/GradleMethodContextContributor.java

@@ -0,0 +1,55 @@
+/*
+ * Copyright 2000-2013 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.gradle.service.resolve;
+
+import com.intellij.psi.PsiElement;
+import com.intellij.psi.ResolveState;
+import com.intellij.psi.scope.PsiScopeProcessor;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.plugins.groovy.lang.resolve.NonCodeMembersContributor;
+
+/**
+ * This interface narrows {@link NonCodeMembersContributor} to a closure executed inside particular method call at a gradle script.
+ * <p/>
+ * Example:
+ * <b>build.gradle</b>
+ * <pre>
+ *   subprojects {
+ *     repositories {
+ *       mavenCentral()
+ *     }
+ *   }
+ * </pre>
+ * Here <code>'subprojects'</code> should be resolved at context of a global script; <code>'repositories'</code> in a context of 
+ * <code>'subprojects'</code> and <code>'mavenCentral'</code> in a context of <code>'repositories'</code>. Every such context
+ * is expected to be backed by corresponding implementation of the current interface.
+ * 
+ * @author Denis Zhdanov
+ * @since 7/23/13 7:32 PM
+ */
+public interface GradleMethodContextContributor {
+
+  /**
+   * Tries to resolve target element.
+   * 
+   * @param processor  the processor receiving the declarations.
+   * @param state      current resolve state
+   * @param place      the original element from which the tree up walk was initiated.
+   */
+  void process(@NotNull PsiScopeProcessor processor,
+               @NotNull ResolveState state,
+               @NotNull PsiElement place);
+}