Code Insight: Implement package references inside of string literals

#KT-12136 In Progress

ultimate/testData/spring/core/references/completion/handler/packageReferenceEnter.kt

@@ -0,0 +1,11 @@
+// ELEMENT: java
+// CHAR: \n
+
+import org.springframework.context.annotation.ComponentScan
+import org.springframework.context.annotation.Configuration
+
+@Configuration
+@ComponentScan(basePackages = arrayOf("ja<caret>va"))
+open class App {
+
+}

ultimate/testData/spring/core/references/completion/handler/packageReferenceEnter.kt.after

@@ -0,0 +1,11 @@
+// ELEMENT: java
+// CHAR: \n
+
+import org.springframework.context.annotation.ComponentScan
+import org.springframework.context.annotation.Configuration
+
+@Configuration
+@ComponentScan(basePackages = arrayOf("javava"))
+open class App {
+
+}

ultimate/testData/spring/core/references/completion/handler/packageReferenceTab.kt

@@ -0,0 +1,11 @@
+// ELEMENT: java
+// CHAR: \t
+
+import org.springframework.context.annotation.ComponentScan
+import org.springframework.context.annotation.Configuration
+
+@Configuration
+@ComponentScan(basePackages = arrayOf("ja<caret>va"))
+open class App {
+
+}

ultimate/testData/spring/core/references/completion/handler/packageReferenceTab.kt.after

@@ -0,0 +1,11 @@
+// ELEMENT: java
+// CHAR: \t
+
+import org.springframework.context.annotation.ComponentScan
+import org.springframework.context.annotation.Configuration
+
+@Configuration
+@ComponentScan(basePackages = arrayOf("java"))
+open class App {
+
+}

ultimate/testData/spring/core/references/completion/variants/packageReference.kt

@@ -0,0 +1,12 @@
+// NUMBER: 2
+// EXIST: { lookupString:"java" }
+// EXIST: { lookupString:"javax" }
+
+import org.springframework.context.annotation.ComponentScan
+import org.springframework.context.annotation.Configuration
+
+@Configuration
+@ComponentScan(basePackages = arrayOf("ja<caret>va"))
+open class App {
+
+}

ultimate/testData/spring/core/references/navigation/packageReferenceInComponentScan.kt

@@ -0,0 +1,11 @@
+// NO_XML_CONFIG
+// REF: java
+
+import org.springframework.context.annotation.ComponentScan
+import org.springframework.context.annotation.Configuration
+
+@Configuration
+@ComponentScan(basePackages = arrayOf("<caret>java"))
+open class App {
+
+}