PY-7711 PY-36912 Don't spell check strings containing injections

rather delegating to the spell checker of the injected language.

Otherwise, we either just report typos twice (PY-36912) or, worse, report
numerous false positives since we try to apply tokenization rules for Python
to a different language as we notoriously have been doing all this time for
injected regular expressions.

Implementations of spell checkers for other languages such as Java or
JavaScript have been using this policy for ages.

GitOrigin-RevId: d1a2a3d48b7a5efff0dbb32ec2847fba1482f3a8

python/src/com/jetbrains/python/spellchecker/PythonSpellcheckerStrategy.java

@@ -15,6 +15,7 @@
  */
 package com.jetbrains.python.spellchecker;
 
+import com.intellij.lang.injection.InjectedLanguageManager;
 import com.intellij.openapi.util.TextRange;
 import com.intellij.psi.PsiElement;
 import com.intellij.spellchecker.inspections.PlainTextSplitter;
@@ -94,6 +95,10 @@ public class PythonSpellcheckerStrategy extends SpellcheckingStrategy {
   @Override
   public Tokenizer getTokenizer(PsiElement element) {
     if (element instanceof PyStringLiteralExpression) {
+      final InjectedLanguageManager injectionManager = InjectedLanguageManager.getInstance(element.getProject());
+      if (element.getTextLength() >= 2 && injectionManager.getInjectedPsiFiles(element) != null) {
+        return EMPTY_TOKENIZER;
+      }
       PsiElement parent = element.getParent();
       if (parent instanceof PyBinaryExpression) {
         PyBinaryExpression binaryExpression = (PyBinaryExpression)parent;

python/testData/inspections/spelling/typosInDoctestsReportedOnce.py

@@ -0,0 +1,3 @@
+"""
+>>> 'There are also always two inspection <TYPO descr="Typo: In word 'messags'">messags</TYPO>.'
+"""

python/testData/inspections/spelling/typosInInjectedPythonStringsReportedOnce.py

@@ -0,0 +1,2 @@
+# language=Python
+s = '"<TYPO descr="Typo: In word 'mstyped'">mstyped</TYPO>"'

python/testData/inspections/spelling/typosInRegexIgnored.py

@@ -0,0 +1,2 @@
+import re
+re_sth = re.compile(r'(\w+)\stells\syou')

python/testSrc/com/jetbrains/python/PySpellCheckerTest.java

@@ -66,6 +66,20 @@ public class PySpellCheckerTest extends PyTestCase {
     doTest();
   }
 
+  public void testTyposInInjectedPythonStringsReportedOnce() {
+    doTest();
+  }
+
+  // PY-36912
+  public void testTyposInDoctestsReportedOnce() {
+    doTest();
+  }
+
+  // PY-7711
+  public void testTyposInRegexIgnored() {
+    doTest();
+  }
+
   private void doTest() {
     myFixture.enableInspections(SpellCheckingInspection.class);
     myFixture.configureByFile("inspections/spelling/" + getTestName(true) + ".py");