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matthiasblaesing pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/netbeans.git
The following commit(s) were added to refs/heads/master by this push:
new 6a5ba4b Improve handling of recursive JS structures
new c94c756 Merge pull request #3696 from
matthiasblaesing/3669_recursive_js_models
6a5ba4b is described below
commit 6a5ba4bfa24b870f82f2bbafaae176e98d2d18c4
Author: Matthias Bläsing <mblaes...@doppel-helix.eu>
AuthorDate: Fri Mar 4 23:01:12 2022 +0100
Improve handling of recursive JS structures
JS structures, that reference themselves can cause unlimited recursion
in several places. In this changeset the JsIndexer and
OccurrencesSupport are modified, so that recursive structures can be
scanned without causing a StackOverflowError.
Closes: #3669
---
.../javascript2/editor/index/JsIndexer.java | 35 +++++++--
.../editor/navigation/OccurrencesSupport.java | 41 ++++++----
.../testfiles/indexer/SelfreferencingFunction.js | 25 ++++++
.../indexer/SelfreferencingFunction.js.indexed | 74 ++++++++++++++++++
.../testfiles/indexer/SelfreferencingObject.js | 24 ++++++
.../indexer/SelfreferencingObject.js.indexed | 45 +++++++++++
.../modules/javascript2/editor/JsTestBase.java | 11 ++-
.../editor/index/RecursiveStructuresTest.java | 88 ++++++++++++++++++++++
8 files changed, 319 insertions(+), 24 deletions(-)
diff --git
a/webcommon/javascript2.editor/src/org/netbeans/modules/javascript2/editor/index/JsIndexer.java
b/webcommon/javascript2.editor/src/org/netbeans/modules/javascript2/editor/index/JsIndexer.java
index 3d4332e..d75680e 100644
---
a/webcommon/javascript2.editor/src/org/netbeans/modules/javascript2/editor/index/JsIndexer.java
+++
b/webcommon/javascript2.editor/src/org/netbeans/modules/javascript2/editor/index/JsIndexer.java
@@ -22,6 +22,7 @@ import
org.netbeans.modules.javascript2.model.api.IndexedElement;
import java.io.IOException;
import java.net.URL;
import java.util.Collection;
+import java.util.IdentityHashMap;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.logging.Level;
@@ -96,14 +97,16 @@ public class JsIndexer extends EmbeddingIndexer {
JsObject globalObject = model.getGlobalObject();
for (JsObject object : globalObject.getProperties().values()) {
if (object.getParent() != null) {
- storeObject(object, object.getName(), support, indexable);
+ IdentityHashMap<JsObject,Integer> visited = new
IdentityHashMap<>();
+ storeObject(object, object.getName(), support, indexable,
visited);
}
}
IndexDocument document = support.createDocument(indexable);
for (JsObject object : globalObject.getProperties().values()) {
if (object.getParent() != null) {
- storeUsages(object, object.getName(), document);
+ IdentityHashMap<JsObject,Integer> visited = new
IdentityHashMap<>();
+ storeUsages(object, object.getName(), document, visited);
}
}
support.addDocument(document);
@@ -214,7 +217,15 @@ public class JsIndexer extends EmbeddingIndexer {
return elementDocument;
}
- private void storeObject(JsObject object, String fqn, IndexingSupport
support, Indexable indexable) {
+ private void storeObject(JsObject object, String fqn, IndexingSupport
support, Indexable indexable, IdentityHashMap<JsObject,Integer> visited) {
+ // @todo: This prevents unlimited recursion when self referencing
strucures
+ // are scanned. It is necessary to rework the index users so
that
+ // this is not necessary
+ if(visited.containsKey(object)) {
+ return;
+ }
+ IdentityHashMap<JsObject,Integer> childVisited = new
IdentityHashMap<>(visited);
+ childVisited.compute(object, (k, v) -> v == null ? 1 : v+1);
if (!isInvisibleFunction(object) && object != null && object.getName()
!= null) {
if (object.isDeclared() ||
ModelUtils.PROTOTYPE.equals(object.getName())) {
// if it's delcared, then store in the index as new document.
@@ -226,7 +237,7 @@ public class JsIndexer extends EmbeddingIndexer {
// there can be declared it's properties or methods
for (JsObject property : object.getProperties().values()) {
if (!(property instanceof JsReference &&
!((JsReference)property).getOriginal().isAnonymous())) {
- storeObject(property, fqn + '.' + property.getName(),
support, indexable);
+ storeObject(property, fqn + '.' + property.getName(),
support, indexable, childVisited);
} else {
IndexDocument document =
createDocumentForReference((JsReference)property, fqn + '.' +
property.getName(), support, indexable);
//// IndexDocument document =
IndexedElement.createDocument(property, fqn + '.' + property.getName(),
support, indexable);
@@ -236,7 +247,7 @@ public class JsIndexer extends EmbeddingIndexer {
if (object instanceof JsFunction) {
// store parameters
for (JsObject parameter :
((JsFunction)object).getParameters()) {
- storeObject(parameter, fqn + '.' +
parameter.getName(), support, indexable);
+ storeObject(parameter, fqn + '.' +
parameter.getName(), support, indexable, childVisited);
}
}
}
@@ -286,7 +297,15 @@ public class JsIndexer extends EmbeddingIndexer {
return result.toString();
}
- private void storeUsages(JsObject object, String name, IndexDocument
document) {
+ private void storeUsages(JsObject object, String name, IndexDocument
document, IdentityHashMap<JsObject,Integer> visited) {
+ // @todo: This prevents unlimited recursion when self referencing
strucures
+ // are scanned. It is necessary to rework the index users so
that
+ // this is not necessary
+ if(visited.containsKey(object)) {
+ return;
+ }
+ IdentityHashMap<JsObject,Integer> childVisited = new
IdentityHashMap<>(visited);
+ childVisited.compute(object, (k, v) -> v == null ? 1 : v+1);
StringBuilder sb = new StringBuilder();
sb.append(object.getName());
for (JsObject property : object.getProperties().values()) {
@@ -304,12 +323,12 @@ public class JsIndexer extends EmbeddingIndexer {
if (object instanceof JsFunction) {
// store parameters
for (JsObject parameter : ((JsFunction) object).getParameters()) {
- storeUsages(parameter, parameter.getName(), document);
+ storeUsages(parameter, parameter.getName(), document,
childVisited);
}
}
for (JsObject property : object.getProperties().values()) {
if (storeUsage(property) && (!(property instanceof JsReference &&
!((JsReference)property).getOriginal().isAnonymous()))) {
- storeUsages(property, property.getName(), document);
+ storeUsages(property, property.getName(), document,
childVisited);
}
}
}
diff --git
a/webcommon/javascript2.editor/src/org/netbeans/modules/javascript2/editor/navigation/OccurrencesSupport.java
b/webcommon/javascript2.editor/src/org/netbeans/modules/javascript2/editor/navigation/OccurrencesSupport.java
index ca15ff5..6b2d4ac 100644
---
a/webcommon/javascript2.editor/src/org/netbeans/modules/javascript2/editor/navigation/OccurrencesSupport.java
+++
b/webcommon/javascript2.editor/src/org/netbeans/modules/javascript2/editor/navigation/OccurrencesSupport.java
@@ -18,6 +18,7 @@
*/
package org.netbeans.modules.javascript2.editor.navigation;
+import java.util.IdentityHashMap;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.netbeans.modules.javascript2.model.api.JsElement;
@@ -35,27 +36,34 @@ import
org.netbeans.modules.javascript2.model.api.Occurrence;
public class OccurrencesSupport {
private static final Logger LOGGER =
Logger.getLogger(OccurrencesSupport.class.getName());
-
+
private final Model model;
public OccurrencesSupport(Model model) {
this.model = model;
}
-
+
public Occurrence getOccurrence(int offset) {
Occurrence result;
long start = System.currentTimeMillis();
JsObject object = model.getGlobalObject();
- result = findOccurrence(object, offset);
+ IdentityHashMap<JsObject,Void> scannedElements = new
IdentityHashMap<>();
+ result = findOccurrence(object, offset, scannedElements);
+ scannedElements.clear();
if (result == null) {
- result = findDeclaration(object, offset);
+ result = findDeclaration(object, offset, scannedElements);
}
long end = System.currentTimeMillis();
LOGGER.log(Level.FINE, "Computing getOccurences({0}) took {1}ms.
Returns {2}", new Object[]{offset, end - start, result});
return result;
}
-
- private Occurrence findOccurrence(JsObject object, int offset) {
+
+ private Occurrence findOccurrence(JsObject object, int offset,
IdentityHashMap<JsObject,Void> scannedElements) {
+ if(scannedElements.containsKey(object)) {
+ return null;
+ } else {
+ scannedElements.put(object, null);
+ }
Occurrence result = null;
JsElement.Kind kind = object.getJSKind();
for(Occurrence occurrence: object.getOccurrences()) {
@@ -65,10 +73,10 @@ public class OccurrencesSupport {
}
if (kind.isFunction() || kind == JsElement.Kind.CATCH_BLOCK) {
for(JsObject param : ((JsFunction)object).getParameters()) {
- result = findOccurrence(param, offset);
+ result = findOccurrence(param, offset, scannedElements);
if (result != null) {
break;
- }
+ }
}
if (result != null) {
return result;
@@ -77,7 +85,7 @@ public class OccurrencesSupport {
if (!(object instanceof JsReference &&
ModelUtils.isDescendant(object, ((JsReference)object).getOriginal()))) {
for(JsObject property: object.getProperties().values()) {
if (!(property instanceof JsReference &&
!((JsReference)property).getOriginal().isAnonymous())) {
- result = findOccurrence(property, offset);
+ result = findOccurrence(property, offset,
scannedElements);
if (result != null) {
break;
}
@@ -92,8 +100,13 @@ public class OccurrencesSupport {
}
return result;
}
-
- private Occurrence findDeclaration (JsObject object, int offset) {
+
+ private Occurrence findDeclaration (JsObject object, int offset,
IdentityHashMap<JsObject,Void> scannedElements) {
+ if(scannedElements.containsKey(object)) {
+ return null;
+ } else {
+ scannedElements.put(object, null);
+ }
Occurrence result = null;
JsElement.Kind kind = object.getJSKind();
if (kind != JsElement.Kind.ANONYMOUS_OBJECT && kind !=
JsElement.Kind.WITH_OBJECT
@@ -105,9 +118,9 @@ public class OccurrencesSupport {
propertyName =
propertyName.substring(propertyName.lastIndexOf(' ') + 1);
JsObject property =
object.getParent().getProperty(propertyName);
if (property != null) {
- return new
Occurrence(property.getDeclarationName().getOffsetRange(), property);
+ return new
Occurrence(property.getDeclarationName().getOffsetRange(), property);
}
- }
+ }
result = new
Occurrence(object.getDeclarationName().getOffsetRange(), object);
}
@@ -122,7 +135,7 @@ public class OccurrencesSupport {
if (result == null) {
for(JsObject property: object.getProperties().values()) {
if (!(property instanceof JsReference)) {
- result = findDeclaration(property, offset);
+ result = findDeclaration(property, offset,
scannedElements);
if (result != null) {
break;
}
diff --git
a/webcommon/javascript2.editor/test/unit/data/testfiles/indexer/SelfreferencingFunction.js
b/webcommon/javascript2.editor/test/unit/data/testfiles/indexer/SelfreferencingFunction.js
new file mode 100644
index 0000000..e80c75d
--- /dev/null
+++
b/webcommon/javascript2.editor/test/unit/data/testfiles/indexer/SelfreferencingFunction.js
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you 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.
+ */
+
+function mod(actions) {
+ return actions.map((action) => {
+ action = { action };
+ return action;
+ });
+};
\ No newline at end of file
diff --git
a/webcommon/javascript2.editor/test/unit/data/testfiles/indexer/SelfreferencingFunction.js.indexed
b/webcommon/javascript2.editor/test/unit/data/testfiles/indexer/SelfreferencingFunction.js.indexed
new file mode 100644
index 0000000..88f9cf1
--- /dev/null
+++
b/webcommon/javascript2.editor/test/unit/data/testfiles/indexer/SelfreferencingFunction.js.indexed
@@ -0,0 +1,74 @@
+
+
+Document 0
+Searchable Keys:
+ bn : SelfreferencingFunctionmod#=>#21
+ bni : selfreferencingfunctionmod#=>#21
+ fqn : mod.SelfreferencingFunctionmod#=>#21A
+ offset : 870
+
+Not Searchable Keys:
+ assign :
+ flag : 4289
+ param : action:
+ return :
+
+
+Document 1
+Searchable Keys:
+ bn : action
+ bni : action
+ fqn : mod.SelfreferencingFunctionmod#=>#21.actionP
+ offset : 871
+
+Not Searchable Keys:
+ assign :
+ flag : 131138
+
+
+Document 2
+Searchable Keys:
+ bn : actions
+ bni : actions
+ fqn : mod.actionsP
+ offset : 836
+
+Not Searchable Keys:
+ assign :
+ flag : 131138
+
+
+Document 3
+Searchable Keys:
+ bn : mod
+ bni : mod
+ fqn : modO
+ offset : 832
+
+Not Searchable Keys:
+ assign :
+ flag : 8258
+ param : actions:
+ return : 0|,928,@pro;actions@call;map
+
+
+Document 4
+Searchable Keys:
+ bn : param
+ bni : param
+ fqn : mod.actions.map.paramP
+ offset : 0
+
+Not Searchable Keys:
+ assign :
+ flag : 131138
+
+
+Document 5
+Searchable Keys:
+ usage : actions:map#F
+ usage : map
+ usage : mod
+ usage : param
+
+Not Searchable Keys:
diff --git
a/webcommon/javascript2.editor/test/unit/data/testfiles/indexer/SelfreferencingObject.js
b/webcommon/javascript2.editor/test/unit/data/testfiles/indexer/SelfreferencingObject.js
new file mode 100644
index 0000000..55eff95
--- /dev/null
+++
b/webcommon/javascript2.editor/test/unit/data/testfiles/indexer/SelfreferencingObject.js
@@ -0,0 +1,24 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you 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.
+ */
+
+a = {
+ height: 1
+};
+
+a.a = {a};
\ No newline at end of file
diff --git
a/webcommon/javascript2.editor/test/unit/data/testfiles/indexer/SelfreferencingObject.js.indexed
b/webcommon/javascript2.editor/test/unit/data/testfiles/indexer/SelfreferencingObject.js.indexed
new file mode 100644
index 0000000..6815790
--- /dev/null
+++
b/webcommon/javascript2.editor/test/unit/data/testfiles/indexer/SelfreferencingObject.js.indexed
@@ -0,0 +1,45 @@
+
+
+Document 0
+Searchable Keys:
+ bn : a
+ bni : a
+ fqn : a.aO
+ offset : 849
+
+Not Searchable Keys:
+ assign :
+ flag : 2097218
+
+
+Document 1
+Searchable Keys:
+ bn : a
+ bni : a
+ fqn : aO
+ offset : 823
+
+Not Searchable Keys:
+ assign :
+ flag : 2097218
+
+
+Document 2
+Searchable Keys:
+ bn : height
+ bni : height
+ fqn : a.heightO
+ offset : 833
+
+Not Searchable Keys:
+ assign : Number:-1:1|
+ flag : 578
+
+
+Document 3
+Searchable Keys:
+ usage : a:a#P
+ usage : a:height#P:a#P
+ usage : height
+
+Not Searchable Keys:
diff --git
a/webcommon/javascript2.editor/test/unit/src/org/netbeans/modules/javascript2/editor/JsTestBase.java
b/webcommon/javascript2.editor/test/unit/src/org/netbeans/modules/javascript2/editor/JsTestBase.java
index 679e9b7..9ecd78e 100644
---
a/webcommon/javascript2.editor/test/unit/src/org/netbeans/modules/javascript2/editor/JsTestBase.java
+++
b/webcommon/javascript2.editor/test/unit/src/org/netbeans/modules/javascript2/editor/JsTestBase.java
@@ -25,9 +25,11 @@ import java.util.Set;
import org.netbeans.lib.lexer.test.TestLanguageProvider;
import org.netbeans.modules.csl.api.test.CslTestBase;
import org.netbeans.modules.csl.spi.DefaultLanguageConfig;
+import org.netbeans.modules.javascript2.editor.index.JsIndexer;
import org.netbeans.modules.javascript2.lexer.api.JsTokenId;
import org.netbeans.modules.parsing.impl.indexing.IndexingUtils;
import org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater;
+import org.netbeans.modules.parsing.spi.indexing.EmbeddingIndexerFactory;
/**
* @author Tor Norbye
@@ -50,12 +52,17 @@ public abstract class JsTestBase extends CslTestBase {
protected DefaultLanguageConfig getPreferredLanguage() {
return new TestJsLanguage();
}
-
+
@Override
protected String getPreferredMimeType() {
return JsTokenId.JAVASCRIPT_MIME_TYPE;
}
-
+
+ @Override
+ public EmbeddingIndexerFactory getIndexerFactory() {
+ return new JsIndexer.Factory();
+ }
+
public static class TestJsLanguage extends JsLanguage {
public TestJsLanguage() {
diff --git
a/webcommon/javascript2.editor/test/unit/src/org/netbeans/modules/javascript2/editor/index/RecursiveStructuresTest.java
b/webcommon/javascript2.editor/test/unit/src/org/netbeans/modules/javascript2/editor/index/RecursiveStructuresTest.java
new file mode 100644
index 0000000..1e45243
--- /dev/null
+++
b/webcommon/javascript2.editor/test/unit/src/org/netbeans/modules/javascript2/editor/index/RecursiveStructuresTest.java
@@ -0,0 +1,88 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you 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.netbeans.modules.javascript2.editor.index;
+
+import java.lang.reflect.Field;
+import java.util.Collections;
+import java.util.concurrent.atomic.AtomicBoolean;
+import org.netbeans.modules.javascript2.editor.JsTestBase;
+import org.netbeans.modules.javascript2.editor.navigation.OccurrencesSupport;
+import org.netbeans.modules.javascript2.model.api.Model;
+import org.netbeans.modules.javascript2.types.spi.ParserResult;
+import org.netbeans.modules.parsing.api.ParserManager;
+import org.netbeans.modules.parsing.api.ResultIterator;
+import org.netbeans.modules.parsing.api.Source;
+import org.netbeans.modules.parsing.api.UserTask;
+
+/**
+ * The JS support functions need to guard against self referential models. If
+ * there is no guard, unlimited recursion can occur, leading to a stack
+ * overflow.
+ */
+public class RecursiveStructuresTest extends JsTestBase {
+
+ public RecursiveStructuresTest(String testName) {
+ super(testName);
+ }
+
+ @Override
+ protected void setUp() throws Exception {
+ super.setUp();
+ // org.netbeans.modules.javascript2.model.api.Model has an assert
+ // detecting cycles. This must be deactivated for tests
+ Field f = Model.class.getDeclaredField("assertFired");
+ f.setAccessible(true);
+ ((AtomicBoolean) f.get(null)).set(true);
+ }
+
+ public void testIndexingSelfreferencingObject() throws Exception {
+ checkIndexer("/testfiles/indexer/SelfreferencingObject.js");
+ }
+
+ public void testIndexingSelfreferencingFunction() throws Exception {
+ checkIndexer("/testfiles/indexer/SelfreferencingFunction.js");
+ }
+
+ public void testOccurrencesSelfreferencingObject() throws Exception {
+ Model m = getModel("/testfiles/indexer/SelfreferencingObject.js");
+ OccurrencesSupport os = new OccurrencesSupport(m);
+ os.getOccurrence(0);
+ }
+
+ public void testOccurrencesSelfreferencingFunction() throws Exception {
+ Model m = getModel("/testfiles/indexer/SelfreferencingFunction.js");
+ OccurrencesSupport os = new OccurrencesSupport(m);
+ os.getOccurrence(0);
+ }
+
+ public Model getModel(String file) throws Exception {
+ final Model[] globals = new Model[1];
+ Source source = getTestSource(getTestFile(file));
+
+ ParserManager.parse(Collections.singleton(source), new UserTask() {
+ public @Override
+ void run(ResultIterator resultIterator) throws Exception {
+ ParserResult parameter = (ParserResult)
resultIterator.getParserResult();
+ Model model = Model.getModel(parameter, false);
+ globals[0] = model;
+ }
+ });
+ return globals[0];
+ }
+}
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