From 09c9fc28987128d0647f3d7020996897474cfb1a Mon Sep 17 00:00:00 2001
From: Mikhail Golubev <mikhail.golubev@jetbrains.com>
Date: Fri, 4 Jun 2021 13:42:53 +0300
Subject: [PATCH] PY-48665 Disable f-string-like completion in literal string
 patterns

Since f-strings are not supported inside patterns.

GitOrigin-RevId: f96b8b6e999c893930203f933c6f55aec6e60869
---
 .../completion/PyFStringLikeCompletionContributor.java       | 5 +++--
 .../fStringLikeCompletionNotAvailableInLiteralPatterns.py    | 4 ++++
 python/testSrc/com/jetbrains/python/Py3CompletionTest.java   | 5 +++++
 3 files changed, 12 insertions(+), 2 deletions(-)
 create mode 100644 python/testData/completion/fStringLikeCompletionNotAvailableInLiteralPatterns.py

diff --git a/python/python-psi-impl/src/com/jetbrains/python/codeInsight/completion/PyFStringLikeCompletionContributor.java b/python/python-psi-impl/src/com/jetbrains/python/codeInsight/completion/PyFStringLikeCompletionContributor.java
index e1f99a8ccbb2..f87d299d797d 100644
--- a/python/python-psi-impl/src/com/jetbrains/python/codeInsight/completion/PyFStringLikeCompletionContributor.java
+++ b/python/python-psi-impl/src/com/jetbrains/python/codeInsight/completion/PyFStringLikeCompletionContributor.java
@@ -35,13 +35,14 @@ import static com.jetbrains.python.psi.PyUtil.as;
  */
 public class PyFStringLikeCompletionContributor extends CompletionContributor {
 
-  private static final PsiElementPattern.Capture<PyPlainStringElement> INSIDE_NON_FORMATTED_STRING_ELEMENT =
+  private static final PsiElementPattern.Capture<PyPlainStringElement> APPLICABLE_STRING_ELEMENT =
     psiElement(PyPlainStringElement.class)
       .withParent(PyStringLiteralExpression.class)
+      .andNot(psiElement().withSuperParent(2, PyLiteralPattern.class))
       .andNot(psiElement().inside(PyStringFormatCompletionContributor.FORMAT_STRING_CAPTURE));
 
   public PyFStringLikeCompletionContributor() {
-    extend(CompletionType.BASIC, INSIDE_NON_FORMATTED_STRING_ELEMENT, new CompletionProvider<>() {
+    extend(CompletionType.BASIC, APPLICABLE_STRING_ELEMENT, new CompletionProvider<>() {
       @Override
       protected void addCompletions(@NotNull CompletionParameters parameters,
                                     @NotNull ProcessingContext context,
diff --git a/python/testData/completion/fStringLikeCompletionNotAvailableInLiteralPatterns.py b/python/testData/completion/fStringLikeCompletionNotAvailableInLiteralPatterns.py
new file mode 100644
index 000000000000..92c2d5d39d7c
--- /dev/null
+++ b/python/testData/completion/fStringLikeCompletionNotAvailableInLiteralPatterns.py
@@ -0,0 +1,4 @@
+my_expr = 42
+match my_expr:
+    case '{my_e<caret>':
+        pass
\ No newline at end of file
diff --git a/python/testSrc/com/jetbrains/python/Py3CompletionTest.java b/python/testSrc/com/jetbrains/python/Py3CompletionTest.java
index 6328329d78cf..00a23617dfff 100644
--- a/python/testSrc/com/jetbrains/python/Py3CompletionTest.java
+++ b/python/testSrc/com/jetbrains/python/Py3CompletionTest.java
@@ -474,6 +474,11 @@ public class Py3CompletionTest extends PyTestCase {
     assertContainsElements(myFixture.getLookupElementStrings(), "city");
   }
 
+  // PY-48665
+  public void testFStringLikeCompletionNotAvailableInLiteralPatterns() {
+    doNegativeTest();
+  }
+
   // PY-46056
   public void testImportCompletionHintForSameDirectoryModuleInOrdinaryPackage() {
     doTestVariantTailText("ordinaryPackage/sample.py", "logging", null);