From 141d3c55c659092468c1636c3a815812ecef9c3e Mon Sep 17 00:00:00 2001
From: Roman Shevchenko <roman.shevchenko@jetbrains.com>
Date: Wed, 20 May 2015 13:35:22 +0200
Subject: [PATCH] groovy: package dependency visitor implementation

---
 plugins/groovy/src/META-INF/plugin.xml        |  3 +
 .../GrDependencyVisitorFactory.groovy         | 85 +++++++++++++++++++
 2 files changed, 88 insertions(+)
 create mode 100644 plugins/groovy/src/org/jetbrains/plugins/groovy/codeInspection/dependencies/GrDependencyVisitorFactory.groovy

diff --git a/plugins/groovy/src/META-INF/plugin.xml b/plugins/groovy/src/META-INF/plugin.xml
index c8c8a5c5a7cf..ab9435bd6635 100644
--- a/plugins/groovy/src/META-INF/plugin.xml
+++ b/plugins/groovy/src/META-INF/plugin.xml
@@ -1105,6 +1105,9 @@
                      level="WARNING"
                      implementationClass="org.jetbrains.plugins.groovy.codeInspection.bugs.GrEqualsBetweenInconvertibleTypesInspection"/>
 
+    <packageDependencies.visitor language="Groovy"
+                                 implementationClass="org.jetbrains.plugins.groovy.codeInspection.dependencies.GrDependencyVisitorFactory"/>
+
     <implicitUsageProvider implementation="org.jetbrains.plugins.groovy.findUsages.GrImplicitUsageProvider"/>
 
     <scratch.rootType implementation="org.jetbrains.plugins.groovy.console.GroovyConsoleRootType"/>
diff --git a/plugins/groovy/src/org/jetbrains/plugins/groovy/codeInspection/dependencies/GrDependencyVisitorFactory.groovy b/plugins/groovy/src/org/jetbrains/plugins/groovy/codeInspection/dependencies/GrDependencyVisitorFactory.groovy
new file mode 100644
index 000000000000..cccaa3954c67
--- /dev/null
+++ b/plugins/groovy/src/org/jetbrains/plugins/groovy/codeInspection/dependencies/GrDependencyVisitorFactory.groovy
@@ -0,0 +1,85 @@
+/*
+ * Copyright 2000-2015 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.codeInspection.dependencies
+
+import com.intellij.openapi.progress.ProgressIndicatorProvider
+import com.intellij.packageDependencies.DependenciesBuilder
+import com.intellij.packageDependencies.DependencyVisitorFactory
+import com.intellij.psi.PsiElement
+import com.intellij.psi.PsiElementVisitor
+import com.intellij.psi.PsiFile
+import org.jetbrains.annotations.NotNull
+import org.jetbrains.plugins.groovy.lang.groovydoc.psi.api.GrDocComment
+import org.jetbrains.plugins.groovy.lang.psi.GroovyElementVisitor
+import org.jetbrains.plugins.groovy.lang.psi.GroovyFile
+import org.jetbrains.plugins.groovy.lang.psi.GroovyPsiElement
+import org.jetbrains.plugins.groovy.lang.psi.GroovyRecursiveElementVisitor
+import org.jetbrains.plugins.groovy.lang.psi.api.statements.expressions.literals.GrLiteral
+import org.jetbrains.plugins.groovy.lang.psi.api.toplevel.imports.GrImportStatement
+
+class GrDependencyVisitorFactory extends DependencyVisitorFactory {
+  @NotNull
+  @Override
+  PsiElementVisitor getVisitor(@NotNull DependenciesBuilder.DependencyProcessor processor,
+                               @NotNull DependencyVisitorFactory.VisitorOptions options) {
+    GroovyElementVisitor visitor = new MyVisitor(processor, options)
+    new PsiElementVisitor() {
+      @Override
+      void visitFile(PsiFile file) {
+        if (file instanceof GroovyFile) {
+          file.accept(visitor)
+        }
+      }
+    }
+  }
+
+  private static class MyVisitor extends GroovyRecursiveElementVisitor {
+    private final DependenciesBuilder.DependencyProcessor myProcessor
+    private final DependencyVisitorFactory.VisitorOptions myOptions
+
+    MyVisitor(DependenciesBuilder.DependencyProcessor processor, DependencyVisitorFactory.VisitorOptions options) {
+      myOptions = options
+      myProcessor = processor
+    }
+
+    @Override
+    void visitElement(GroovyPsiElement element) {
+      ProgressIndicatorProvider.checkCanceled()
+
+      super.visitElement(element)
+
+      element.references.each {
+        PsiElement resolved = it.resolve();
+        if (resolved != null) {
+          myProcessor.process(it.element, resolved);
+        }
+      }
+    }
+
+    @Override
+    void visitImportStatement(GrImportStatement statement) {
+      if (!myOptions.skipImports()) {
+        visitElement(statement);
+      }
+    }
+
+    @Override
+    void visitDocComment(GrDocComment comment) {}
+
+    @Override
+    void visitLiteralExpression(GrLiteral literal) {}
+  }
+}