W-22185108: Support internal on DataWeave IntelliJ plugin

data-weave-plugin/build.gradle

@@ -34,6 +34,10 @@ intellij {
     updateSinceUntilBuild = false
 }
 
+tasks.named('runIde') {
+    jvmArgs '-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=*:5005'
+}
+
 task downloadAgentServerDependencies(type: Copy) {
     from configurations.agentServerLibs
     into "$projectDir/src/main/resources/agent-server-libs"

data-weave-plugin/src/main/java/org/mule/tooling/lang/dw/indexer/WeaveGlobalDefinitionsIndexer.java

@@ -48,7 +48,8 @@ public class WeaveGlobalDefinitionsIndexer extends FileBasedIndexExtension<Strin
                             PsiElement nameIdentifier = functionDefinition.getNameIdentifier();
                             if (nameIdentifier != null) {
                                 TextRange textRange = nameIdentifier.getTextRange();
-                                int scope =  directive.isPrivate() ? IdentifierScope.PRIVATE() : IdentifierScope.PUBLIC();
+                                int scope =  directive.isPrivate() ? IdentifierScope.PRIVATE() :
+                                            (directive.isInternal() ? IdentifierScope.INTERNAL() : IdentifierScope.PUBLIC());
                                 weaveIdentifiers.add(new GlobalElementIdentifier(textRange.getStartOffset(),
                                         textRange.getEndOffset(),
                                         functionDefinition.getName(),
@@ -66,7 +67,8 @@ public class WeaveGlobalDefinitionsIndexer extends FileBasedIndexExtension<Strin
                             List<GlobalElementIdentifier> weaveIdentifiers = result.computeIfAbsent(fqn, k -> new ArrayList<>());
                             PsiElement nameIdentifier = variableDefinition.getNameIdentifier();
                             if (nameIdentifier != null) {
-                                int scope =  directive.isPrivate() ? IdentifierScope.PRIVATE() : IdentifierScope.PUBLIC();
+                                int scope =  directive.isPrivate() ? IdentifierScope.PRIVATE() :
+                                            (directive.isInternal() ? IdentifierScope.INTERNAL() : IdentifierScope.PUBLIC());
                                 TextRange textRange = nameIdentifier.getTextRange();
                                 weaveIdentifiers.add(new GlobalElementIdentifier(textRange.getStartOffset(),
                                         textRange.getEndOffset(),
@@ -85,7 +87,8 @@ public class WeaveGlobalDefinitionsIndexer extends FileBasedIndexExtension<Strin
                             List<GlobalElementIdentifier> weaveIdentifiers = result.computeIfAbsent(fqn, k -> new ArrayList<>());
                             PsiElement nameIdentifier = typeDefinition.getNameIdentifier();
                             if (nameIdentifier != null) {
-                                int scope =  directive.isPrivate() ? IdentifierScope.PRIVATE() : IdentifierScope.PUBLIC();
+                                int scope =  directive.isPrivate() ? IdentifierScope.PRIVATE() :
+                                            (directive.isInternal() ? IdentifierScope.INTERNAL() : IdentifierScope.PUBLIC());
                                 TextRange textRange = nameIdentifier.getTextRange();
                                 weaveIdentifiers.add(new GlobalElementIdentifier(textRange.getStartOffset(),
                                         textRange.getEndOffset(),
@@ -149,7 +152,7 @@ private void serialize(GlobalElementIdentifier entry, DataOutput out) throws IOE
 
     @Override
     public int getVersion() {
-        return 0;
+        return 1; // Incremented for internal scope support
     }
 
     @Override

data-weave-plugin/src/main/java/org/mule/tooling/lang/dw/lexer/_WeaveLexer.flex

@@ -126,6 +126,7 @@ CARET_SPACE="^"[\ \t\f\n]
 
   "%dw"                       { return VERSION_DIRECTIVE_KEYWORD;}
   "private"                   { return PRIVATE_KEYWORD;}
+  "internal"                   { return INTERNAL_KEYWORD;}
   "input"                    { return INPUT_DIRECTIVE_KEYWORD;}
   "output"                   { return OUTPUT_DIRECTIVE_KEYWORD;}
   "annotation"                   { return ANNOTATION_DIRECTIVE_KEYWORD;}

data-weave-plugin/src/main/java/org/mule/tooling/lang/dw/parser/Weave.bnf

@@ -77,6 +77,7 @@
         INPUT_DIRECTIVE_KEYWORD="input"
         VAR_DIRECTIVE_KEYWORD="var"
         PRIVATE_KEYWORD="private"
+        INTERNAL_KEYWORD="internal"
         FUNCTION_DIRECTIVE_KEYWORD="fun"
         ANNOTATION_DIRECTIVE_KEYWORD="annotation"
         NAMESPACE_DIRECTIVE_KEYWORD="ns"
@@ -148,7 +149,7 @@ AnnotationDefinition ::= Identifier '('( AnnotationParameter ( ',' AnnotationPar
 
 AnnotationParameter::= ((Identifier) ':' TypeLiteral) ('=' AnnotatedExpression)?
 
-private HeaderRecover::= !('---'|OUTPUT_DIRECTIVE_KEYWORD|'type'|'fun'|'ns'|'var'|'%dw'|'input'|IMPORT_DIRECTIVE_KEYWORD | '@' | 'annotation' | 'private')
+private HeaderRecover::= !('---'|OUTPUT_DIRECTIVE_KEYWORD|'type'|'fun'|'ns'|'var'|'%dw'|'input'|IMPORT_DIRECTIVE_KEYWORD | '@' | 'annotation' | 'private' | 'internal')
 
 VersionDirective::= Annotation* '%dw'  DOUBLE_LITERAL {pin=2}
 
@@ -163,9 +164,9 @@ ImportedElement::= Identifier ('as' ImportedElementAlias)? {
 
 ImportedElementAlias::=Identifier
 
-NamespaceDirective::= Annotation* 'private'? 'ns' NamespaceDefinition {
-    methods = [ isPrivate ]
-    pin = 3
+NamespaceDirective::= Annotation* 'private'? 'internal'? 'ns' NamespaceDefinition {
+    methods = [ isPrivate isInternal ]
+    pin = 4
 }
 
 NamespaceDefinition::=Identifier NAMESPACE_URI
@@ -176,16 +177,16 @@ NamespaceDefinition::=Identifier NAMESPACE_URI
       pin=1
  }
 
-VariableDirective::= Annotation* 'private'? 'var' VariableDefinition {
-    methods = [ isPrivate ]
-    pin = 3
+VariableDirective::= Annotation* 'private'? 'internal'? 'var' VariableDefinition {
+    methods = [ isPrivate isInternal ]
+    pin = 4
 }
 
 OutputDirective::= Annotation* OUTPUT_DIRECTIVE_KEYWORD (":" Type)? ((DataFormat ('with' Identifier)?) | Identifier) Options? {pin=2}
 
-TypeDirective::= Annotation* 'private'? 'type' TypeDefinition {
-    methods = [ isPrivate ]
-    pin = 3
+TypeDirective::= Annotation* 'private'? 'internal'? 'type' TypeDefinition {
+    methods = [ isPrivate isInternal ]
+    pin = 4
 }
 
 TypeDefinition::=Identifier TypeParameterDeclaration? '=' (TypeLiteral | UndefinedLiteral)
@@ -196,9 +197,9 @@ TypeDefinition::=Identifier TypeParameterDeclaration? '=' (TypeLiteral | Undefin
                       pin=1
                  }
 
-FunctionDirective::= Annotation* 'private'? 'fun' FunctionDefinition {
-    methods = [ isPrivate ]
-    pin = 3
+FunctionDirective::= Annotation* 'private'? 'internal'? 'fun' FunctionDefinition {
+    methods = [ isPrivate isInternal ]
+    pin = 4
 }
 
 FunctionDefinition::=Identifier TypeParameterDeclaration? L_PARREN ( FunctionParameter ( ',' FunctionParameter )* )? (",")? R_PARREN ( ":" (Type | DynamicReturn)? "=" | "=")? AnnotatedExpression