From cadb70f64a7db5a5f16ce682471915208d287633 Mon Sep 17 00:00:00 2001
From: Yan Zhulanow <yan.zhulanow@jetbrains.com>
Date: Thu, 21 Feb 2019 00:52:19 +0300
Subject: [PATCH] Evaluator: Allow to evaluate expression on synthetic lines in
 .kt files

---
 .../evaluate/KotlinEvaluationBuilder.kt        |  4 ++--
 .../evaluate/singleBreakpoint/dataClassCopy.kt | 18 ++++++++++++++++++
 .../singleBreakpoint/dataClassCopy.out         | 10 ++++++++++
 .../KotlinEvaluateExpressionTestGenerated.java |  5 +++++
 4 files changed, 35 insertions(+), 2 deletions(-)
 create mode 100644 idea/testData/debugger/tinyApp/src/evaluate/singleBreakpoint/dataClassCopy.kt
 create mode 100644 idea/testData/debugger/tinyApp/src/evaluate/singleBreakpoint/dataClassCopy.out

diff --git a/idea/idea-jvm/src/org/jetbrains/kotlin/idea/debugger/evaluate/KotlinEvaluationBuilder.kt b/idea/idea-jvm/src/org/jetbrains/kotlin/idea/debugger/evaluate/KotlinEvaluationBuilder.kt
index 999a5fbfe9e..42251c4e150 100644
--- a/idea/idea-jvm/src/org/jetbrains/kotlin/idea/debugger/evaluate/KotlinEvaluationBuilder.kt
+++ b/idea/idea-jvm/src/org/jetbrains/kotlin/idea/debugger/evaluate/KotlinEvaluationBuilder.kt
@@ -89,12 +89,12 @@ object KotlinEvaluationBuilder : EvaluatorBuilder {
             return EvaluatorBuilderImpl.getInstance()!!.build(codeFragment, position)
         }
 
-        if (position.line < 0) {
+        if (position.line < 0 && position.file !is KtFile) {
             evaluationException("Couldn't evaluate Kotlin expression at $position")
         }
 
         val file = position.file
-        if (file is KtFile) {
+        if (file is KtFile && position.line >= 0) {
             val document = PsiDocumentManager.getInstance(file.project).getDocument(file)
             if (document == null || document.lineCount < position.line) {
                 evaluationException(
diff --git a/idea/testData/debugger/tinyApp/src/evaluate/singleBreakpoint/dataClassCopy.kt b/idea/testData/debugger/tinyApp/src/evaluate/singleBreakpoint/dataClassCopy.kt
new file mode 100644
index 00000000000..3fb798725ff
--- /dev/null
+++ b/idea/testData/debugger/tinyApp/src/evaluate/singleBreakpoint/dataClassCopy.kt
@@ -0,0 +1,18 @@
+package dataClassCopy
+
+fun main() {
+    val a = Foo("foo")
+    //Breakpoint!
+    a.copy("bar")
+}
+
+data class Foo(val a: String)
+
+// STEP_INTO: 1
+// STEP_OUT: 1
+
+// EXPRESSION: Foo("baz")
+// RESULT: instance of dataClassCopy.Foo(id=ID): LdataClassCopy/Foo;
+
+// EXPRESSION: a
+// RESULT: Unresolved reference: a
\ No newline at end of file
diff --git a/idea/testData/debugger/tinyApp/src/evaluate/singleBreakpoint/dataClassCopy.out b/idea/testData/debugger/tinyApp/src/evaluate/singleBreakpoint/dataClassCopy.out
new file mode 100644
index 00000000000..7167326bfd3
--- /dev/null
+++ b/idea/testData/debugger/tinyApp/src/evaluate/singleBreakpoint/dataClassCopy.out
@@ -0,0 +1,10 @@
+LineBreakpoint created at dataClassCopy.kt:6
+Run Java
+Connected to the target VM
+dataClassCopy.kt:6
+dataClassCopy.kt:9
+dataClassCopy.kt:-1
+Compile bytecode for Foo("baz")
+Disconnected from the target VM
+
+Process finished with exit code 0
diff --git a/idea/tests/org/jetbrains/kotlin/idea/debugger/evaluate/KotlinEvaluateExpressionTestGenerated.java b/idea/tests/org/jetbrains/kotlin/idea/debugger/evaluate/KotlinEvaluateExpressionTestGenerated.java
index f9537a61912..8691da5dc9b 100644
--- a/idea/tests/org/jetbrains/kotlin/idea/debugger/evaluate/KotlinEvaluateExpressionTestGenerated.java
+++ b/idea/tests/org/jetbrains/kotlin/idea/debugger/evaluate/KotlinEvaluateExpressionTestGenerated.java
@@ -91,6 +91,11 @@ public class KotlinEvaluateExpressionTestGenerated extends AbstractKotlinEvaluat
             runTest("idea/testData/debugger/tinyApp/src/evaluate/singleBreakpoint/collections.kt");
         }
 
+        @TestMetadata("dataClassCopy.kt")
+        public void testDataClassCopy() throws Exception {
+            runTest("idea/testData/debugger/tinyApp/src/evaluate/singleBreakpoint/dataClassCopy.kt");
+        }
+
         @TestMetadata("defaultParameterValues.kt")
         public void testDefaultParameterValues() throws Exception {
             runTest("idea/testData/debugger/tinyApp/src/evaluate/singleBreakpoint/defaultParameterValues.kt");