Only backtick hard keywords in imports

Don't backtick soft keywords and modifiers

Author: themkat

server/src/main/kotlin/org/javacs/kt/imports/Imports.kt

@@ -40,8 +40,7 @@ private fun matchingPrefixLength(left: FqName, right: FqName): Int =
         .count()
 
 private fun backtickBultins(fqName: FqName): String {
-    val builtInKeywords = (KtTokens.SOFT_KEYWORDS.getTypes() + KtTokens.KEYWORDS.getTypes())
-        .asSequence()
+    val builtInKeywords = KtTokens.KEYWORDS.getTypes()
         .mapNotNull { (it as? KtKeywordToken)?.value }
     var result = fqName.asString()
     for (builtin in builtInKeywords) {

server/src/test/kotlin/org/javacs/kt/ImportsTest.kt

@@ -47,4 +47,17 @@ class ImportTextEditTest : SingleFileTestFixture("imports", "Simple.kt") {
         assertThat(result.range, equalTo(range(1, 23, 1, 23)))
         assertThat(result.newText, equalTo("\n\nimport `fun`.`class`.someother.`package`.method.`var`.`val`"))
     }
+
+    @Test
+    fun `should NOT wrap soft keywords or modifiers in backticks`() {
+        // tests for a selection of soft keywords and modifiers
+        // according to https://kotlinlang.org/docs/keyword-reference.html
+        //  both can be used as identifiers. (only hard keywords can not)
+        val ktFile = languageServer.sourcePath.parsedFile(workspaceRoot.resolve(file).toUri())
+        val importName = FqName("as.annotation.import.by.inner.file.field")
+        val result = getImportTextEditEntry(ktFile, importName)
+
+        assertThat(result.range, equalTo(range(1, 23, 1, 23)))
+        assertThat(result.newText, equalTo("\n\nimport `as`.annotation.import.by.inner.file.field"))
+    }
 }