Index Directives (import, export, part, part of)

lib/src/scip_visitor.dart

@@ -35,7 +35,7 @@ class ScipVisitor extends GeneralizingAstVisitor {
           packageConfig,
           pubspec,
         ) {
-    final fileSymbol = _symbolGenerator.fileSymbolFor(_relativePath);
+    final fileSymbol = _symbolGenerator.symbolForFile(_relativePath);
     occurrences.add(Occurrence(
       symbol: fileSymbol,
       range: [0, 0, 0],
@@ -56,6 +56,8 @@ class ScipVisitor extends GeneralizingAstVisitor {
       _visitNormalFormalParameter(node);
     } else if (node is SimpleIdentifier) {
       _visitSimpleIdentifier(node);
+    } else if (node is Directive) {
+      _visitDirective(node);
     }
 
     super.visitNode(node);
@@ -148,6 +150,27 @@ class ScipVisitor extends GeneralizingAstVisitor {
     }
   }
 
+  void _visitDirective(Directive node) {
+    final element = node.element!;
+
+    StringLiteral uriLiteral;
+    if (node is UriBasedDirective) {
+      uriLiteral = node.uri;
+    } else if (node is PartOfDirective && node.uri != null) {
+      uriLiteral = node.uri!;
+    } else {
+      return;
+    }
+
+    final symbol = _symbolGenerator.symbolForDirective(node, element);
+    if (symbol != null) {
+       occurrences.add(Occurrence(
+        range: _lineInfo.getRange(uriLiteral.offset, uriLiteral.length),
+        symbol: symbol,
+      ));
+    }
+  }
+
   /// Registers the provided [element] as a reference to an existing definition
   ///
   /// [node] refers to the ast node where the reference exists, [element]

lib/src/symbol_generator.dart

@@ -1,3 +1,4 @@
+import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:pubspec_parse/pubspec_parse.dart';
 import 'package:package_config/package_config.dart';
@@ -51,14 +52,62 @@ class SymbolGenerator {
     ].join(' ');
   }
 
-  String fileSymbolFor(String path) {
+  String symbolForFile(String path) {
     return [
       'scip-dart',
       'pub ${_pubspec.name} ${_pubspec.version}',
       '${_escapeNamespacePath(path)}/',
     ].join(' ');
   }
 
+  String? symbolForDirective(Directive node, Element element) {
+    Uri uri;
+    if (element is LibraryImportElement) {
+      uri = (element.uri as DirectiveUriWithSource).source.uri;
+    } else if (element is LibraryExportElement) {
+      uri = (element.uri as DirectiveUriWithSource).source.uri;
+    } else if (element is PartElement) {
+      uri = (element.uri as DirectiveUriWithSource).source.uri;
+    } else if (node is PartOfDirective && element is LibraryElement) {
+      uri = element.source.uri;
+    } else {
+      return null;
+    }
+
+    if (uri.toString().startsWith('dart')) {
+      final packageVersion =
+          element.library!.languageVersion.package.toString();
+      return [
+        'scip-dart',
+        'pub $uri $packageVersion',
+        _getPackage(element),
+        _escapeNamespacePath(_pathForSdkElement(element)) + '/'
+      ].join(' ');
+    }
+
+    if (uri.toString().startsWith('package')) {
+      final resolvedUri = _packageConfig.resolve(uri);
+      if (resolvedUri == null) return null;
+      uri = resolvedUri;
+    }
+
+    final config = _packageConfig.packageOf(uri);
+    if (config == null) return null;
+
+    final relativePath = _escapeNamespacePath(
+      uri.toFilePath().substring(config.root.toFilePath().length),
+    );
+
+    final packageName = config.name;
+    final version = PackageVersionCache.versionFor(config.root.toFilePath());
+
+    return [
+      'scip-dart',
+      'pub $packageName $version',
+      '$relativePath/',
+    ].join(' ');
+  }
+
   /// Returns a scip package symbol for a provided [Element].
   ///
   /// <package>      ::= <manager> ' ' <package-name> ' ' <version>

lib/src/utils.dart

@@ -41,3 +41,12 @@ extension LineInfoExtension on LineInfo {
     ];
   }
 }
+
+/// Removes single or double quotes from a string if they exist
+String stripQuotes(String input) {
+  // check if input is wrapped in quotes. If it is, remove them
+  if (input.startsWith('"') && input.endsWith('"') || input.startsWith("'") && input.endsWith("'")) {
+    return input.substring(1, input.length -1);
+  }
+  return input;
+}

snapshots/input/basic-project/lib/nested/directives.dart

@@ -0,0 +1,7 @@
+import 'dart:math' as math;
+import 'dart:collection';
+import 'package:dart_test/main.dart';
+import 'package:test/fake.dart';
+import '../other.dart';
+export '../relationships.dart';
+part 'directives_part.dart';

snapshots/input/basic-project/lib/nested/directives_part.dart

@@ -0,0 +1 @@
+part of 'directives.dart';

snapshots/input/staging-project/pubspec.lock

@@ -1,5 +1,12 @@
 # Generated by pub
 # See https://dart.dev/tools/pub/glossary#lockfile
-packages: {}
+packages:
+  collection:
+    dependency: "direct main"
+    description:
+      name: collection
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.17.1"
 sdks:
   dart: ">=2.18.0 <3.0.0"

snapshots/input/staging-project/pubspec.yaml

@@ -3,3 +3,6 @@ version: 1.0.0
 
 environment:
   sdk: ">=2.18.0 <3.0.0"
+
+dependencies:
+  collection: ^1.17.1

snapshots/output/basic-project/lib/main.dart

@@ -1,5 +1,6 @@
   import 'package:dart_test/other.dart';
 // definition scip-dart pub dart_test 1.0.0 lib/`main.dart`/
+//       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ reference scip-dart pub dart_test 1.0.0 lib/`other.dart`/
 
   /// This is a fib function
   ///

snapshots/output/basic-project/lib/more.dart

@@ -1,5 +1,6 @@
   import 'dart:math' as math;
 // definition scip-dart pub dart_test 1.0.0 lib/`more.dart`/
+//       ^^^^^^^^^^^ reference scip-dart pub dart:math 2.18.0 pub dart_test 1.0.0 package:dart_test/`more.dart`/
 //                      ^^^^ definition scip-dart pub dart_test 1.0.0 lib/`more.dart`/math.
 
   enum AnimalType {

snapshots/output/basic-project/lib/nested/directives.dart

@@ -0,0 +1,16 @@
+  import 'dart:math' as math;
+// definition scip-dart pub dart_test 1.0.0 lib/nested/`directives.dart`/
+//       ^^^^^^^^^^^ reference scip-dart pub dart:math 2.18.0 pub dart_test 1.0.0 package:dart_test/nested/`directives.dart`/
+//                      ^^^^ definition scip-dart pub dart_test 1.0.0 lib/nested/`directives.dart`/math.
+  import 'dart:collection';
+//       ^^^^^^^^^^^^^^^^^ reference scip-dart pub dart:collection 2.18.0 pub dart_test 1.0.0 package:dart_test/nested/`directives.dart`/
+  import 'package:dart_test/main.dart';
+//       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ reference scip-dart pub dart_test 1.0.0 lib/`main.dart`/
+  import 'package:test/fake.dart';
+//       ^^^^^^^^^^^^^^^^^^^^^^^^ reference scip-dart pub test 1.24.3 lib/`fake.dart`/
+  import '../other.dart';
+//       ^^^^^^^^^^^^^^^ reference scip-dart pub dart_test 1.0.0 lib/`other.dart`/
+  export '../relationships.dart';
+//       ^^^^^^^^^^^^^^^^^^^^^^^ reference scip-dart pub dart_test 1.0.0 lib/`relationships.dart`/
+  part 'directives_part.dart';
+//     ^^^^^^^^^^^^^^^^^^^^^^ reference scip-dart pub dart_test 1.0.0 lib/nested/`directives_part.dart`/

snapshots/output/basic-project/lib/nested/directives_part.dart

@@ -0,0 +1,3 @@
+  part of 'directives.dart';
+// definition scip-dart pub dart_test 1.0.0 lib/nested/`directives_part.dart`/
+//        ^^^^^^^^^^^^^^^^^ reference scip-dart pub dart_test 1.0.0 lib/nested/`directives.dart`/

snapshots/output/basic-project/lib/other.dart

@@ -1,5 +1,6 @@
   import 'more.dart' deferred as more;
 // definition scip-dart pub dart_test 1.0.0 lib/`other.dart`/
+//       ^^^^^^^^^^^ reference scip-dart pub dart_test 1.0.0 lib/`more.dart`/
 //                               ^^^^ definition scip-dart pub dart_test 1.0.0 lib/`other.dart`/more.
 
   class Foo {

snapshots/output/basic-project/test/basic_test.dart

@@ -1,5 +1,6 @@
   import 'package:test/test.dart';
 // definition scip-dart pub dart_test 1.0.0 test/`basic_test.dart`/
+//       ^^^^^^^^^^^^^^^^^^^^^^^^ reference scip-dart pub test 1.24.3 lib/`test.dart`/
 
   void main() {
 //     ^^^^ definition scip-dart pub dart_test 1.0.0 test/`basic_test.dart`/main().