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/*
* Copyright 2000-2014 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 com.intellij.psi
import com.intellij.openapi.application.ApplicationManager
import com.intellij.openapi.fileEditor.FileDocumentManager
import com.intellij.openapi.vfs.VfsUtil
import com.intellij.psi.impl.source.PsiFileImpl
import com.intellij.psi.search.GlobalSearchScope
import com.intellij.psi.search.searches.OverridingMethodsSearch
import com.intellij.psi.util.PsiTreeUtil
import com.intellij.reference.SoftReference
import com.intellij.testFramework.fixtures.LightCodeInsightFixtureTestCase
import java.util.concurrent.CountDownLatch
/**
* @author peter
*/
class StubAstSwitchTest extends LightCodeInsightFixtureTestCase {
public void "test modifying file with stubs via VFS"() {
PsiFileImpl file = (PsiFileImpl)myFixture.addFileToProject('Foo.java', 'class Foo {}')
assert file.stub
def cls = ((PsiJavaFile)file).classes[0]
assert file.stub
def oldCount = psiManager.modificationTracker.javaStructureModificationCount
ApplicationManager.application.runWriteAction { file.virtualFile.setBinaryContent(file.virtualFile.contentsToByteArray()) }
assert psiManager.modificationTracker.javaStructureModificationCount != oldCount
assert !cls.valid
assert file.stub
assert cls != PsiTreeUtil.findElementOfClassAtOffset(file, 1, PsiClass, false)
assert !file.stub
}
public void "test reachable psi classes remain valid when nothing changes"() {
int count = 1000
List<SoftReference<PsiClass>> classList = (0..<count).collect { new SoftReference(myFixture.addClass("class Foo$it {}")) }
System.gc()
System.gc()
System.gc()
assert classList.every {
def cls = it.get()
if (!cls || cls.valid) return true
cls.text //load AST
return cls.valid
}
}
public void "test traversing PSI and switching concurrently"() {
int count = 100
List<PsiClass> classList = (0..<count).collect {
myFixture.addClass("class Foo$it { " +
"void foo$it(" +
(0..250).collect { "int i$it"}.join(", ") +
") {}" +
" }")
}
CountDownLatch latch = new CountDownLatch(count)
for (c in classList) {
ApplicationManager.application.executeOnPooledThread {
Thread.yield();
ApplicationManager.application.runReadAction {
c.text;
}
latch.countDown()
}
for (m in c.methods) {
def parameters = m.parameterList.parameters
for (i in 0..<parameters.size()) {
assert i == m.parameterList.getParameterIndex(parameters[i])
}
}
}
latch.await()
}
public void "test external modification of a stubbed file with smart pointer switches the file to AST"() {
PsiFile file = myFixture.addFileToProject("A.java", "class A {}")
def oldClass = JavaPsiFacade.getInstance(project).findClass("A", GlobalSearchScope.allScope(project))
def pointer = SmartPointerManager.getInstance(project).createSmartPsiElementPointer(oldClass)
def document = FileDocumentManager.instance.getDocument(file.virtualFile)
assert document
assert file == PsiDocumentManager.getInstance(project).getCachedPsiFile(document)
assert document == PsiDocumentManager.getInstance(project).getCachedDocument(file)
assert ((PsiFileImpl)file).stub
ApplicationManager.application.runWriteAction { VfsUtil.saveText(file.virtualFile, "import java.util.*; class A {}; class B {}") }
assert pointer.element == oldClass
assert ((PsiFileImpl)file).treeElement
}
public void "test do not parse when resolving references inside an anonymous class"() {
PsiFileImpl file = (PsiFileImpl) myFixture.addFileToProject("A.java", """
class A {
Object field = new B() {
void foo(Object o) {
}
};
}
class B {
void foo(Object o) {}
}
""")
assert !file.contentsLoaded
PsiClass bClass = ((PsiJavaFile) file).classes[1]
assert !file.contentsLoaded
def fooMethod = bClass.methods[0]
assert !file.contentsLoaded
def override = OverridingMethodsSearch.search(fooMethod).findAll().first()
assert override
assert !file.contentsLoaded
assert override.containingClass instanceof PsiAnonymousClass
assert !file.contentsLoaded
assert bClass == override.containingClass.superClass
}
}
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