Debugger: add an option for computing delegated properties values in Variables View

idea/idea-analysis/src/org/jetbrains/kotlin/idea/JetBundle.properties

@@ -480,3 +480,4 @@ kotlin.compiler.js.option.output.copy.dir=O&utput directory for library &runtime
 
 # Debugger
 debugger.filter.ignore.internal.classes=Do not step into specific Kotlin classes
+debugger.data.view.delegated.properties=Calculate values of delegated properties (may affect program execution)

idea/src/org/jetbrains/kotlin/idea/debugger/KotlinDebuggerSettings.kt

@@ -31,6 +31,7 @@ import com.intellij.xdebugger.XDebuggerUtil
 
 State(name = "KotlinDebuggerSettings", storages = array(Storage(file = StoragePathMacros.APP_CONFIG + "/kotlin_debug.xml")))
 public class KotlinDebuggerSettings : XDebuggerSettings<KotlinDebuggerSettings>("kotlin_debugger"), Getter<KotlinDebuggerSettings> {
+    public var DEBUG_RENDER_DELEGATED_PROPERTIES: Boolean = true
     public var DEBUG_DISABLE_KOTLIN_INTERNAL_CLASSES: Boolean = true
     public var DEBUG_IS_FILTER_FOR_STDLIB_ALREADY_ADDED: Boolean = false
 
@@ -44,10 +45,16 @@ public class KotlinDebuggerSettings : XDebuggerSettings<KotlinDebuggerSettings>(
         return when (category) {
             DebuggerSettingsCategory.STEPPING ->
                 listOf(SimpleConfigurable.create(
-                        "reference.idesettings.debugger.kotlin",
+                        "reference.idesettings.debugger.kotlin.stepping",
                         "Kotlin",
                         javaClass<KotlinSteppingConfigurableUi>(),
                         this))
+            DebuggerSettingsCategory.DATA_VIEWS ->
+                listOf(SimpleConfigurable.create(
+                        "reference.idesettings.debugger.kotlin.data.view",
+                        "Kotlin",
+                        javaClass<KotlinDelegatedPropertyRendererConfigurableUi>(),
+                        this))
             else -> listOf()
         }
     }

idea/src/org/jetbrains/kotlin/idea/debugger/KotlinDelegatedPropertyRendererConfigurableUi.form

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<form xmlns="http://www.intellij.com/uidesigner/form/" version="1" bind-to-class="org.jetbrains.kotlin.idea.debugger.KotlinDelegatedPropertyRendererConfigurableUi">
+  <grid id="27dc6" binding="myPanel" layout-manager="GridLayoutManager" row-count="2" column-count="2" same-size-horizontally="false" same-size-vertically="false" hgap="-1" vgap="-1">
+    <margin top="0" left="0" bottom="0" right="0"/>
+    <constraints>
+      <xy x="20" y="20" width="500" height="400"/>
+    </constraints>
+    <properties/>
+    <border type="none"/>
+    <children>
+      <component id="99d36" class="javax.swing.JCheckBox" binding="renderDelegatedProperties">
+        <constraints>
+          <grid row="0" column="0" row-span="1" col-span="2" vsize-policy="0" hsize-policy="3" anchor="8" fill="0" indent="0" use-parent-layout="false"/>
+        </constraints>
+        <properties>
+          <selected value="false"/>
+          <text resource-bundle="org/jetbrains/kotlin/idea/JetBundle" key="debugger.data.view.delegated.properties"/>
+        </properties>
+      </component>
+      <vspacer id="c37da">
+        <constraints>
+          <grid row="1" column="0" row-span="1" col-span="2" vsize-policy="6" hsize-policy="1" anchor="0" fill="2" indent="0" use-parent-layout="false"/>
+        </constraints>
+      </vspacer>
+    </children>
+  </grid>
+</form>

idea/src/org/jetbrains/kotlin/idea/debugger/KotlinDelegatedPropertyRendererConfigurableUi.java

@@ -0,0 +1,50 @@
+/*
+ * Copyright 2010-2015 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.kotlin.idea.debugger;
+
+
+import com.intellij.openapi.options.ConfigurableUi;
+import org.jetbrains.annotations.NotNull;
+
+import javax.swing.*;
+
+public class KotlinDelegatedPropertyRendererConfigurableUi implements ConfigurableUi<KotlinDebuggerSettings> {
+    private JCheckBox renderDelegatedProperties;
+    private JPanel myPanel;
+
+    @Override
+    public void reset(@NotNull KotlinDebuggerSettings settings) {
+        boolean flag = settings.getDEBUG_RENDER_DELEGATED_PROPERTIES();
+        renderDelegatedProperties.setSelected(flag);
+    }
+
+    @Override
+    public boolean isModified(@NotNull KotlinDebuggerSettings settings) {
+        return settings.getDEBUG_RENDER_DELEGATED_PROPERTIES() != renderDelegatedProperties.isSelected();
+    }
+
+    @Override
+    public void apply(@NotNull KotlinDebuggerSettings settings) {
+        settings.setDEBUG_RENDER_DELEGATED_PROPERTIES(renderDelegatedProperties.isSelected());
+    }
+
+    @NotNull
+    @Override
+    public JComponent getComponent() {
+        return myPanel;
+    }
+}

idea/src/org/jetbrains/kotlin/idea/debugger/render/DelegatedPropertyFieldDescriptor.kt

@@ -16,29 +16,50 @@
 
 package org.jetbrains.kotlin.idea.debugger.render
 
-import com.intellij.openapi.project.Project
-import com.sun.jdi.Field
-import org.jetbrains.kotlin.load.java.JvmAbi
-import com.intellij.debugger.engine.evaluation.EvaluationContextImpl
-import com.sun.jdi.Value
-import com.intellij.debugger.ui.impl.watch.ValueDescriptorImpl
 import com.intellij.debugger.DebuggerContext
-import com.intellij.psi.PsiExpression
+import com.intellij.debugger.engine.evaluation.EvaluateException
+import com.intellij.debugger.engine.evaluation.EvaluationContextImpl
 import com.intellij.debugger.settings.NodeRendererSettings
-import com.intellij.debugger.ui.tree.FieldDescriptor
+import com.intellij.debugger.ui.impl.watch.FieldDescriptorImpl
+import com.intellij.openapi.project.Project
+import com.intellij.psi.PsiExpression
+import com.sun.jdi.Field
+import com.sun.jdi.Method
 import com.sun.jdi.ObjectReference
+import com.sun.jdi.Value
+import org.jetbrains.kotlin.codegen.PropertyCodegen
+import org.jetbrains.kotlin.load.java.JvmAbi
+import org.jetbrains.kotlin.name.Name
 
 class DelegatedPropertyFieldDescriptor(
         project: Project,
-        val computedValueFromGetter: Value,
         val objectRef: ObjectReference,
-        val delegate: Field
-): ValueDescriptorImpl(project, computedValueFromGetter), FieldDescriptor {
-    override fun getField() = delegate
-    override fun getObject() = objectRef
+        val delegate: Field,
+        val renderDelegatedProperty: Boolean
+) : FieldDescriptorImpl(project, objectRef, delegate) {
 
     override fun calcValue(evaluationContext: EvaluationContextImpl?): Value? {
-        return computedValueFromGetter
+        if (evaluationContext == null) return null
+        if (!renderDelegatedProperty) return super.calcValue(evaluationContext)
+
+        val method = findGetterForDelegatedProperty()
+        val threadReference = evaluationContext.getSuspendContext().getThread()?.getThreadReference()
+        if (method == null || threadReference == null) {
+            return super.calcValue(evaluationContext)
+        }
+
+        try {
+            return evaluationContext.getDebugProcess().invokeInstanceMethod(
+                    evaluationContext,
+                    getObject(),
+                    method,
+                    listOf<Nothing>(),
+                    evaluationContext.getSuspendContext().getSuspendPolicy()
+            )
+        }
+        catch(e: EvaluateException) {
+            return e.getExceptionFromTargetVM()
+        }
     }
 
     override fun calcValueName(): String? {
@@ -54,12 +75,17 @@ class DelegatedPropertyFieldDescriptor(
     }
 
     override fun getName(): String {
-        return delegate.name().trimTrailing(JvmAbi.DELEGATED_PROPERTY_NAME_SUFFIX)
+        return delegate.name().removeSuffix(JvmAbi.DELEGATED_PROPERTY_NAME_SUFFIX)
     }
 
     override fun getDescriptorEvaluation(context: DebuggerContext?): PsiExpression? {
         return null
     }
 
+    private fun findGetterForDelegatedProperty(): Method? {
+        val fieldName = getName()
+        val getterName = PropertyCodegen.getterName(Name.identifier(fieldName))
+        return getObject().referenceType().methodsByName(getterName)?.firstOrNull()
+    }
 }
 

idea/src/org/jetbrains/kotlin/idea/debugger/render/KotlinClassWithDelegatedPropertyRenderer.kt

@@ -37,6 +37,7 @@ import com.sun.jdi.Method
 import org.jetbrains.kotlin.codegen.PropertyCodegen
 import org.jetbrains.kotlin.name.Name
 import com.intellij.debugger.engine.evaluation.EvaluateException
+import org.jetbrains.kotlin.idea.debugger.KotlinDebuggerSettings
 
 public class KotlinClassWithDelegatedPropertyRenderer : ClassRenderer() {
 
@@ -69,24 +70,22 @@ public class KotlinClassWithDelegatedPropertyRenderer : ClassRenderer() {
             }
 
             val fieldDescriptor = nodeDescriptorFactory.getFieldDescriptor(builder.getParentDescriptor(), value, field)
-            children.add(nodeManager.createNode(fieldDescriptor, context))
 
             if (field.name().endsWith(JvmAbi.DELEGATED_PROPERTY_NAME_SUFFIX)) {
-                val method = findGetterForDelegatedProperty(value, field)
-                val threadReference = context.getSuspendContext().getThread()?.getThreadReference()
-                if (method != null && threadReference != null) {
-                    val propValue = try {
-                        context.getDebugProcess().invokeInstanceMethod(context, value, method, listOf<Nothing>(), context.getSuspendContext().getSuspendPolicy())
-                    }
-                    catch(e: EvaluateException) {
-                        e.getExceptionFromTargetVM()
-                    }
-                    if (propValue != null) {
-                        val delegatedPropertyDescriptor = DelegatedPropertyFieldDescriptor(
-                                context.getDebugProcess().getProject()!!, propValue, value, field)
-                        children.add(nodeManager.createNode(delegatedPropertyDescriptor, context))
-                    }
+                val shouldRenderDelegatedProperty = KotlinDebuggerSettings.getInstance().DEBUG_RENDER_DELEGATED_PROPERTIES
+                if (shouldRenderDelegatedProperty) {
+                    children.add(nodeManager.createNode(fieldDescriptor, context))
                 }
+
+                val delegatedPropertyDescriptor = DelegatedPropertyFieldDescriptor(
+                        context.getDebugProcess().getProject()!!,
+                        value,
+                        field,
+                        shouldRenderDelegatedProperty)
+                children.add(nodeManager.createNode(delegatedPropertyDescriptor, context))
+            }
+            else {
+                children.add(nodeManager.createNode(fieldDescriptor, context))
             }
         }
 
@@ -97,9 +96,4 @@ public class KotlinClassWithDelegatedPropertyRenderer : ClassRenderer() {
         builder.setChildren(children)
     }
 
-    private fun findGetterForDelegatedProperty(objRef: ObjectReference, delegate: Field): Method? {
-        val fieldName = delegate.name().trimTrailing(JvmAbi.DELEGATED_PROPERTY_NAME_SUFFIX)
-        val getterName = PropertyCodegen.getterName(Name.identifier(fieldName))
-        return objRef.referenceType().methodsByName(getterName)?.firstOrNull()
-    }
 }

idea/testData/debugger/tinyApp/outs/delegatedPropertyInClassWoRenderer.out

@@ -0,0 +1,32 @@
+LineBreakpoint created at delegatedPropertyInClassWoRenderer.kt:8
+!JDK_HOME!\bin\java -agentlib:jdwp=transport=dt_socket,address=!HOST_NAME!:!HOST_PORT!,suspend=y,server=n -Dfile.encoding=!FILE_ENCODING! -classpath !APP_PATH!\classes;!KOTLIN_RUNTIME!;!CUSTOM_LIBRARY!;!RT_JAR! delegatedPropertyInClassWoRenderer.DelegatedPropertyInClassWoRendererPackage
+Connected to the target VM, address: '!HOST_NAME!:PORT_NAME!', transport: 'socket'
+delegatedPropertyInClassWoRenderer.kt:8
+package delegatedPropertyInClassWoRenderer
+
+import kotlin.properties.Delegates
+
+fun main(args: Array<String>) {
+    val a = A()
+    //Breakpoint!
+    args.size()
+}
+
+class A {
+    val prop by MyDelegate()
+}
+
+class MyDelegate {
+    fun get(t: Any?, p: PropertyMetadata): Int = 1
+}
+
+// RENDER_DELEGATED_PROPERTIES: false
+// PRINT_FRAME
+ frame    = main():8, DelegatedPropertyInClassWoRendererPackage$@packagePartHASH {delegatedPropertyInClassWoRenderer}
+   static   = static = delegatedPropertyInClassWoRenderer.DelegatedPropertyInClassWoRendererPackage$@packagePartHASH
+   local    = args: java.lang.String[] = {java.lang.String[0]@uniqueID} (sp = delegatedPropertyInClassWoRenderer.kt, 5)
+   local    = a: delegatedPropertyInClassWoRenderer.A = {delegatedPropertyInClassWoRenderer.A@uniqueID} (sp = delegatedPropertyInClassWoRenderer.kt, 6)
+     field    = prop: delegatedPropertyInClassWoRenderer.MyDelegate = {delegatedPropertyInClassWoRenderer.MyDelegate@uniqueID} (sp = delegatedPropertyInClassWoRenderer.kt, 12)
+Disconnected from the target VM, address: '!HOST_NAME!:PORT_NAME!', transport: 'socket'
+
+Process finished with exit code 0

idea/testData/debugger/tinyApp/src/evaluate/singleBreakpoint/frame/delegatedPropertyInClassWoRenderer.kt

@@ -0,0 +1,20 @@
+package delegatedPropertyInClassWoRenderer
+
+import kotlin.properties.Delegates
+
+fun main(args: Array<String>) {
+    val a = A()
+    //Breakpoint!
+    args.size()
+}
+
+class A {
+    val prop by MyDelegate()
+}
+
+class MyDelegate {
+    fun get(t: Any?, p: PropertyMetadata): Int = 1
+}
+
+// RENDER_DELEGATED_PROPERTIES: false
+// PRINT_FRAME

idea/tests/org/jetbrains/kotlin/idea/debugger/KotlinDebuggerTestBase.kt

@@ -38,6 +38,7 @@ abstract class KotlinDebuggerTestBase : KotlinDebuggerTestCase() {
     private var oldSettings: DebuggerSettings by Delegates.notNull()
     private var oldIsFilterForStdlibAlreadyAdded: Boolean by Delegates.notNull()
     private var oldDisableKotlinInternalClasses: Boolean by Delegates.notNull()
+    private var oldRenderDelegatedProperties: Boolean by Delegates.notNull()
 
     override fun initApplication() {
         super.initApplication()
@@ -53,6 +54,7 @@ abstract class KotlinDebuggerTestBase : KotlinDebuggerTestCase() {
         val kotlinSettings = KotlinDebuggerSettings.getInstance()
         kotlinSettings.DEBUG_IS_FILTER_FOR_STDLIB_ALREADY_ADDED = false
         kotlinSettings.DEBUG_DISABLE_KOTLIN_INTERNAL_CLASSES = fileText.getValueForSetting("DISABLE_KOTLIN_INTERNAL_CLASSES", oldDisableKotlinInternalClasses)
+        kotlinSettings.DEBUG_RENDER_DELEGATED_PROPERTIES = fileText.getValueForSetting("RENDER_DELEGATED_PROPERTIES", oldRenderDelegatedProperties)
 
         val debuggerSettings = DebuggerSettings.getInstance()!!
         debuggerSettings.SKIP_SYNTHETIC_METHODS = fileText.getValueForSetting("SKIP_SYNTHETIC_METHODS", oldSettings.SKIP_SYNTHETIC_METHODS)
@@ -68,12 +70,14 @@ abstract class KotlinDebuggerTestBase : KotlinDebuggerTestCase() {
     private fun saveDefaultSettings() {
         oldIsFilterForStdlibAlreadyAdded = KotlinDebuggerSettings.getInstance().DEBUG_IS_FILTER_FOR_STDLIB_ALREADY_ADDED
         oldDisableKotlinInternalClasses = KotlinDebuggerSettings.getInstance().DEBUG_DISABLE_KOTLIN_INTERNAL_CLASSES
+        oldRenderDelegatedProperties = KotlinDebuggerSettings.getInstance().DEBUG_RENDER_DELEGATED_PROPERTIES
         oldSettings = DebuggerSettings.getInstance()!!.clone()
     }
 
     private fun restoreDefaultSettings() {
         KotlinDebuggerSettings.getInstance().DEBUG_IS_FILTER_FOR_STDLIB_ALREADY_ADDED = oldIsFilterForStdlibAlreadyAdded
         KotlinDebuggerSettings.getInstance().DEBUG_DISABLE_KOTLIN_INTERNAL_CLASSES = oldDisableKotlinInternalClasses
+        KotlinDebuggerSettings.getInstance().DEBUG_RENDER_DELEGATED_PROPERTIES = oldRenderDelegatedProperties
 
         val debuggerSettings = DebuggerSettings.getInstance()!!
         debuggerSettings.SKIP_SYNTHETIC_METHODS = oldSettings.SKIP_SYNTHETIC_METHODS

idea/tests/org/jetbrains/kotlin/idea/debugger/evaluate/KotlinEvaluateExpressionTestGenerated.java

@@ -399,6 +399,12 @@ public class KotlinEvaluateExpressionTestGenerated extends AbstractKotlinEvaluat
                 doSingleBreakpointTest(fileName);
             }
 
+            @TestMetadata("delegatedPropertyInClassWoRenderer.kt")
+            public void testDelegatedPropertyInClassWoRenderer() throws Exception {
+                String fileName = JetTestUtils.navigationMetadata("idea/testData/debugger/tinyApp/src/evaluate/singleBreakpoint/frame/delegatedPropertyInClassWoRenderer.kt");
+                doSingleBreakpointTest(fileName);
+            }
+
             @TestMetadata("frameAnonymousObject.kt")
             public void testFrameAnonymousObject() throws Exception {
                 String fileName = JetTestUtils.navigationMetadata("idea/testData/debugger/tinyApp/src/evaluate/singleBreakpoint/frame/frameAnonymousObject.kt");