diff --git a/src/main/java/fr/adrienbrault/idea/symfony2plugin/lang/LanguageInjection.java b/src/main/java/fr/adrienbrault/idea/symfony2plugin/lang/LanguageInjection.java
index 7c16b44f8..82ba10987 100644
--- a/src/main/java/fr/adrienbrault/idea/symfony2plugin/lang/LanguageInjection.java
+++ b/src/main/java/fr/adrienbrault/idea/symfony2plugin/lang/LanguageInjection.java
@@ -99,6 +99,10 @@ public Builder matchingMethodCallArgument(@NotNull String classFQN, @NotNull Str
             return matchingPattern(LanguageInjectionPatterns.getMethodCallArgumentPattern(classFQN, methodName, argumentName, argumentIndex));
         }
 
+        public Builder matchingVariableAssigment(@NotNull String variableName) {
+            return matchingPattern(LanguageInjectionPatterns.getVariableAssignmentPattern(variableName));
+        }
+
         public LanguageInjection build() {
             return new LanguageInjection(languageId, prefix, suffix, StandardPatterns.or(patterns.toArray(new ElementPattern[0])));
         }
diff --git a/src/main/java/fr/adrienbrault/idea/symfony2plugin/lang/LanguageInjectionPatterns.java b/src/main/java/fr/adrienbrault/idea/symfony2plugin/lang/LanguageInjectionPatterns.java
index ad73a71c2..2c843f8f3 100644
--- a/src/main/java/fr/adrienbrault/idea/symfony2plugin/lang/LanguageInjectionPatterns.java
+++ b/src/main/java/fr/adrienbrault/idea/symfony2plugin/lang/LanguageInjectionPatterns.java
@@ -92,6 +92,17 @@ public static ElementPattern<? extends PsiElement> getFunctionCallArgumentPatter
             );
     }
 
+    public static ElementPattern<? extends PsiElement> getVariableAssignmentPattern(@NotNull String variableName) {
+        return PlatformPatterns.psiElement()
+            .withParent(PlatformPatterns
+                .psiElement(AssignmentExpression.class)
+                .withFirstChild(PlatformPatterns
+                    .psiElement(Variable.class)
+                    .withName(variableName)
+                )
+            );
+    }
+
     private static class IsAnnotationProperty extends PatternCondition<StringLiteralExpression> {
         @NotNull
         private final String classFQN;
diff --git a/src/main/java/fr/adrienbrault/idea/symfony2plugin/lang/ParameterLanguageInjector.java b/src/main/java/fr/adrienbrault/idea/symfony2plugin/lang/ParameterLanguageInjector.java
index 4db1a1ca5..7b99009a5 100644
--- a/src/main/java/fr/adrienbrault/idea/symfony2plugin/lang/ParameterLanguageInjector.java
+++ b/src/main/java/fr/adrienbrault/idea/symfony2plugin/lang/ParameterLanguageInjector.java
@@ -16,6 +16,7 @@
 import java.util.Collections;
 import java.util.List;
 
+@Deprecated
 public class ParameterLanguageInjector implements MultiHostInjector {
 
     private static final MethodMatcher.CallToSignature[] CSS_SELECTOR_SIGNATURES = {
diff --git a/src/main/java/fr/adrienbrault/idea/symfony2plugin/lang/StringLiteralLanguageInjector.java b/src/main/java/fr/adrienbrault/idea/symfony2plugin/lang/StringLiteralLanguageInjector.java
index afd622dc7..586df928e 100644
--- a/src/main/java/fr/adrienbrault/idea/symfony2plugin/lang/StringLiteralLanguageInjector.java
+++ b/src/main/java/fr/adrienbrault/idea/symfony2plugin/lang/StringLiteralLanguageInjector.java
@@ -12,9 +12,33 @@
 
 public class StringLiteralLanguageInjector implements MultiHostInjector {
 
+    public static final String LANGUAGE_ID_CSS = "CSS";
+    public static final String LANGUAGE_ID_XPATH = "XPath";
+    public static final String LANGUAGE_ID_JSON = "JSON";
+    public static final String LANGUAGE_ID_DQL = "DQL";
     public static final String LANGUAGE_ID_EXPRESSION_LANGUAGE = "Symfony Expression Language";
 
     private final LanguageInjection[] LANGUAGE_INJECTIONS = {
+        new LanguageInjection.Builder(LANGUAGE_ID_CSS)
+            .withPrefix("@media all { ")
+            .withSuffix(" }")
+            .matchingMethodCallArgument("\\Symfony\\Component\\DomCrawler\\Crawler", "filter", "selector", 0)
+            .matchingMethodCallArgument("\\Symfony\\Component\\DomCrawler\\Crawler", "children", "selector", 0)
+            .matchingMethodCallArgument("\\Symfony\\Component\\CssSelector\\CssSelectorConverter", "toXPath", "cssExpr", 0)
+            .build(),
+        new LanguageInjection.Builder(LANGUAGE_ID_XPATH)
+            .matchingMethodCallArgument("\\Symfony\\Component\\DomCrawler\\Crawler", "filterXPath", "xpath", 0)
+            .matchingMethodCallArgument("\\Symfony\\Component\\DomCrawler\\Crawler", "evaluate", "xpath", 0)
+            .build(),
+        new LanguageInjection.Builder(LANGUAGE_ID_JSON)
+            .matchingMethodCallArgument("\\Symfony\\Component\\HttpFoundation\\JsonResponse", "fromJsonString", "data", 0)
+            .matchingMethodCallArgument("\\Symfony\\Component\\HttpFoundation\\JsonResponse", "setJson", "json", 0)
+            .build(),
+        new LanguageInjection.Builder(LANGUAGE_ID_DQL)
+            .matchingMethodCallArgument("\\Doctrine\\ORM\\EntityManager", "createQuery", "dql", 0)
+            .matchingMethodCallArgument("\\Doctrine\\ORM\\Query", "setDQL", "dqlQuery", 0)
+            .matchingVariableAssigment("dql")
+            .build(),
         new LanguageInjection.Builder(LANGUAGE_ID_EXPRESSION_LANGUAGE)
             .matchingConstructorCallArgument("\\Symfony\\Component\\ExpressionLanguage\\Expression", "expression", 0)
             .matchingFunctionCallArgument("\\Symfony\\Component\\DependencyInjection\\Loader\\Configurator\\expr", "expression", 0)
diff --git a/src/test/java/fr/adrienbrault/idea/symfony2plugin/tests/lang/ParameterLanguageInjectorTest.java b/src/test/java/fr/adrienbrault/idea/symfony2plugin/tests/lang/ParameterLanguageInjectorTest.java
index dd1598d90..615d5d1e3 100644
--- a/src/test/java/fr/adrienbrault/idea/symfony2plugin/tests/lang/ParameterLanguageInjectorTest.java
+++ b/src/test/java/fr/adrienbrault/idea/symfony2plugin/tests/lang/ParameterLanguageInjectorTest.java
@@ -6,9 +6,12 @@
 import com.jetbrains.php.lang.PhpFileType;
 import fr.adrienbrault.idea.symfony2plugin.tests.SymfonyLightCodeInsightFixtureTestCase;
 import junit.framework.TestCase;
+import org.junit.Ignore;
 
 import static fr.adrienbrault.idea.symfony2plugin.lang.ParameterLanguageInjector.*;
 
+@Deprecated
+@Ignore("ParameterLanguageInjectorTest is deprecated")
 public class ParameterLanguageInjectorTest extends SymfonyLightCodeInsightFixtureTestCase {
 
     private InjectionTestFixture injectionTestFixture;
diff --git a/src/test/java/fr/adrienbrault/idea/symfony2plugin/tests/lang/StringLiteralLanguageInjectorTest.java b/src/test/java/fr/adrienbrault/idea/symfony2plugin/tests/lang/StringLiteralLanguageInjectorTest.java
index 183976221..3cb4dd9b3 100644
--- a/src/test/java/fr/adrienbrault/idea/symfony2plugin/tests/lang/StringLiteralLanguageInjectorTest.java
+++ b/src/test/java/fr/adrienbrault/idea/symfony2plugin/tests/lang/StringLiteralLanguageInjectorTest.java
@@ -1,11 +1,18 @@
 package fr.adrienbrault.idea.symfony2plugin.tests.lang;
 
+import com.intellij.psi.PsiElement;
 import com.intellij.testFramework.fixtures.InjectionTestFixture;
 import com.jetbrains.php.lang.PhpFileType;
 import fr.adrienbrault.idea.symfony2plugin.tests.SymfonyLightCodeInsightFixtureTestCase;
+import junit.framework.TestCase;
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 
+import static fr.adrienbrault.idea.symfony2plugin.lang.StringLiteralLanguageInjector.LANGUAGE_ID_CSS;
+import static fr.adrienbrault.idea.symfony2plugin.lang.StringLiteralLanguageInjector.LANGUAGE_ID_DQL;
 import static fr.adrienbrault.idea.symfony2plugin.lang.StringLiteralLanguageInjector.LANGUAGE_ID_EXPRESSION_LANGUAGE;
+import static fr.adrienbrault.idea.symfony2plugin.lang.StringLiteralLanguageInjector.LANGUAGE_ID_JSON;
+import static fr.adrienbrault.idea.symfony2plugin.lang.StringLiteralLanguageInjector.LANGUAGE_ID_XPATH;
 
 public class StringLiteralLanguageInjectorTest extends SymfonyLightCodeInsightFixtureTestCase {
 
@@ -22,6 +29,52 @@ public String getTestDataPath() {
         return "src/test/java/fr/adrienbrault/idea/symfony2plugin/tests/lang/fixtures";
     }
 
+    public void skipTestCssLanguageInjections() {
+        // skip as we dont have CSS module in >= 2020 test builds
+        String base = "<?php $c = new \\Symfony\\Component\\DomCrawler\\Crawler();\n";
+        assertInjectedLangAtCaret(base + "$c->filter('html > bo<caret>dy');", LANGUAGE_ID_CSS);
+        assertInjectedLangAtCaret(base + "$c->filter('<caret>');", LANGUAGE_ID_CSS);
+        assertInjectedLangAtCaret(base + "$c->children('html > bo<caret>dy');", LANGUAGE_ID_CSS);
+        assertInjectedLangAtCaret(base + "$c->children('<caret>');", LANGUAGE_ID_CSS);
+
+        base = "<?php $c = new \\Symfony\\Component\\CssSelector\\CssSelectorConverter();\n";
+        assertInjectedLangAtCaret(base + "$c->toXPath('html > bo<caret>dy');", LANGUAGE_ID_CSS);
+        assertInjectedLangAtCaret(base + "$c->toXPath('<caret>');", LANGUAGE_ID_CSS);
+    }
+
+    public void testXPathLanguageInjections() {
+        String base = "<?php $c = new \\Symfony\\Component\\DomCrawler\\Crawler();\n";
+        assertInjectedLangAtCaret(base + "$c->filterXPath('//dum<caret>my');", LANGUAGE_ID_XPATH);
+        assertInjectedLangAtCaret(base + "$c->filterXPath('<caret>');", LANGUAGE_ID_XPATH);
+        assertInjectedLangAtCaret(base + "$c->evaluate('//dum<caret>my');", LANGUAGE_ID_XPATH);
+        assertInjectedLangAtCaret(base + "$c->evaluate('<caret>');", LANGUAGE_ID_XPATH);
+    }
+
+    public void testJsonLanguageInjections() {
+        String base = "<?php \\Symfony\\Component\\HttpFoundation\\";
+        assertInjectedLangAtCaret(base + "JsonResponse::fromJsonString('<caret>');", LANGUAGE_ID_JSON);
+        assertInjectedLangAtCaret(base + "JsonResponse::fromJsonString('{\"foo\": <caret>}');", LANGUAGE_ID_JSON);
+
+        base = "<?php $r = new \\Symfony\\Component\\HttpFoundation\\JsonResponse();\n";
+        assertInjectedLangAtCaret(base + "$r->setJson('<caret>');", LANGUAGE_ID_JSON);
+        assertInjectedLangAtCaret(base + "$r->setJson('{\"foo\": <caret>}');", LANGUAGE_ID_JSON);
+    }
+
+    public void testDqlLanguageInjections() {
+        String base = "<?php $em = new \\Doctrine\\ORM\\EntityManager();\n";
+        assertInjectedLangAtCaret(base + "$em->createQuery('SELECT b FR<caret>OM \\Foo\\Bar b');", LANGUAGE_ID_DQL);
+        assertInjectedLangAtCaret(base + "$em->createQuery('<caret>');", LANGUAGE_ID_DQL);
+        assertInjectedLangAtCaret(base + "$em->createQuery(<<caret><<AAA\n \nAAA\n);", null);
+        assertInjectedFragmentText(base + "$em->createQuery(<<<AAA\nSELEC<caret>T\nAAA\n);", "SELECT");
+        assertInjectedFragmentText(base + "$em->createQuery(<<<'AAA'\nSELEC<caret>T a\nAAA\n);", "SELECT a");
+        base = "<?php $q = new \\Doctrine\\ORM\\Query();\n";
+        assertInjectedLangAtCaret(base + "$q->setDQL('SELECT b FR<caret>OM \\Foo\\Bar b');", LANGUAGE_ID_DQL);
+        assertInjectedLangAtCaret(base + "$q->setDQL('<caret>');", LANGUAGE_ID_DQL);
+
+        assertInjectedLangAtCaret("<?php $dql = \"SELECT b FR<caret>OM \\Foo\\Bar b\");", LANGUAGE_ID_DQL);
+        assertInjectedLangAtCaret("<?php $dql = \"<caret>\");", LANGUAGE_ID_DQL);
+    }
+
     public void testExpressionLanguageLanguageInjections() {
         assertInjectedLangAtCaret(
             "<?php $expr = new \\Symfony\\Component\\ExpressionLanguage\\Expression('<caret>');",
@@ -327,8 +380,15 @@ public void testExpressionLanguageLanguageInjections() {
         );
     }
 
-    private void assertInjectedLangAtCaret(@NotNull String configureByText, @NotNull String lang) {
+    private void assertInjectedLangAtCaret(@NotNull String configureByText, @Nullable String lang) {
         myFixture.configureByText(PhpFileType.INSTANCE, configureByText);
         injectionTestFixture.assertInjectedLangAtCaret(lang);
     }
+
+    private void assertInjectedFragmentText(@NotNull String configureByText, String text) {
+        myFixture.configureByText(PhpFileType.INSTANCE, configureByText);
+        PsiElement injectedElement = injectionTestFixture.getInjectedElement();
+        assertNotNull(injectedElement);
+        TestCase.assertEquals(text, injectedElement.getContainingFile().getText());
+    }
 }