codegraph/docs/grammars/tree-sitter-vbnet.patch

diff --git a/grammar.js b/grammar.js
index 21c8523..00bf2b1 100644
--- a/grammar.js
+++ b/grammar.js
@@ -21,10 +21,14 @@ const PRECEDENCE = {
 
 module.exports = grammar({
   name: "vbnet",
+  word: ($) => $._identifier_token,
+
+  externals: ($) => [$._query_clause_continuation, $.xml_literal],
+
   extras: $ => [
     $.comment,
     $.preprocessor_directive,
-    /[ \t\v\f]+/,
+    /[ \t\v\f\uFEFF]+/,
     /\r?\n/,
     /_[ \t]*\r?\n/,
   ],
@@ -38,17 +42,14 @@ module.exports = grammar({
     $._type,
   ],
   conflicts: ($) => [
+    [$.binary_expression, $.assignment_expression, $.inline_assignment_statement],
     [$.simple_name, $.generic_name],
     [$.await_expression, $.with_expression],
     [$._name_reference, $._type],
     [$.object_creation_expression, $.array_creation_expression, $.array_type],
-    [$.string_literal, $.character_literal],
     [$._primary_expression, $.variable_declarator],
-    [$.lambda_expression, $.with_expression],
-    [$.lambda_expression],
     [$.binary_expression, $.assignment_expression],
     [$._primary_expression, $.select_element],
-    [$.with_expression, $.select_element],
     [$.select_clause],
     [$._primary_expression, $.group_element],
     [$._terminator, $._block_terminator],
@@ -66,7 +67,6 @@ module.exports = grammar({
     [$.aggregate_element, $.into_element],
     [$.group_by_clause],
     [$.else_clause],
-    [$.if_statement],
     [$.case_else_clause],
     [$.case_clause],
     [$.elseif_clause],
@@ -75,7 +75,6 @@ module.exports = grammar({
     [$._primary_expression, $.simple_name, $.generic_name],
     [$._primary_expression, $.variable_declarator, $.labeled_statement],
     [$._statement, $.with_statement],
-    [$.dictionary_initializer, $.collection_initializer],
     [
       $.class_declaration,
       $.structure_declaration,
@@ -89,7 +88,6 @@ module.exports = grammar({
     ],
   ],
 
-  word: ($) => $._identifier_token,
 
   rules: {
     source_file: ($) =>
@@ -157,13 +155,14 @@ module.exports = grammar({
       ),
 
     _terminator: ($) =>
-      choice(seq(optional(":"), choice("\n", "\r\n")), $._eof),
+      prec.right(choice(seq(optional(":"), choice("\n", "\r\n")), prec(-1, ":"), $._eof)),
 
-    _block_terminator: ($) => prec.right(repeat1(choice("\n", "\r\n", $._eof))),
+    _block_terminator: ($) => prec.right(repeat1(choice("\n", "\r\n", ":", $._eof))),
 
     _eof: ($) => token(prec(-10, "$")),
 
-    _identifier_token: ($) => token(prec(-1, /[a-zA-Z_][a-zA-Z0-9_]*/)),
+    _identifier_token: ($) =>
+      token(prec(-1, /[\p{L}\p{Nl}_][\p{L}\p{Nl}\p{Nd}\p{Mn}\p{Pc}]*[%$&!#@]?/u)),
 
     identifier: ($) =>
       choice(
@@ -194,7 +193,6 @@ module.exports = grammar({
             ci("MustInherit"),
             ci("NotInheritable"),
             ci("Overrides"),
-            ci("MustOverride"),
             ci("NotOverridable"),
             ci("Overridable"),
             ci("Overloads"),
@@ -225,43 +223,6 @@ module.exports = grammar({
         $._statement  // Fallback to regular statements
       ),
 
-    _non_statement_identifier: $ => choice(
-      // Match identifiers that don't start with statement keywords
-      token(prec(1, seq(
-        negative_lookahead(seq(
-          choice(
-            /[Tt][Rr][Yy]/,
-            /[Ss][Ee][Ll][Ee][Cc][Tt]/,
-            /[Ii][Ff]/,
-            /[Ww][Hh][Ii][Ll][Ee]/,
-            /[Dd][Oo]/,
-            /[Ff][Oo][Rr]/,
-            /[Uu][Ss][Ii][Nn][Gg]/,
-            /[Ww][Ii][Tt][Hh]/,
-            /[Tt][Hh][Rr][Oo][Ww]/,
-            /[Rr][Ee][Tt][Uu][Rr][Nn]/,
-            /[Ee][Xx][Ii][Tt]/,
-            /[Cc][Oo][Nn][Tt][Ii][Nn][Uu][Ee]/,
-            /[Ss][Tt][Oo][Pp]/,
-            /[Ee][Nn][Dd]/,
-            /[Gg][Oo][Tt][Oo]/,
-            /[Rr][Ee][Ss][Uu][Mm][Ee]/,
-            /[Ee][Rr][Rr][Oo][Rr]/,
-            /[Oo][Nn]/,
-            /[Rr][Ee][Dd][Ii][Mm]/,
-            /[Ee][Rr][Aa][Ss][Ee]/,
-            /[Ss][Yy][Nn][Cc][Ll][Oo][Cc][Kk]/,
-            /[Rr][Aa][Ii][Ss][Ee][Ee][Vv][Ee][Nn][Tt]/,
-            /[Aa][Dd][Dd][Hh][Aa][Nn][Dd][Ll][Ee][Rr]/,
-            /[Rr][Ee][Mm][Oo][Vv][Ee][Hh][Aa][Nn][Dd][Ll][Ee][Rr]/
-          ),
-          choice(/\s/, /\r/, /\n/, /$/)
-        )),
-        /[a-zA-Z_][a-zA-Z0-9_]*/
-      ))),
-      seq("[", /[^\]]+/, "]") // Bracketed identifier can be anything
-    ),
-
     local_declaration_modifier: ($) =>
       choice(ci("Dim"), ci("Const"), ci("Static")),
 
@@ -300,6 +261,8 @@ module.exports = grammar({
     _primary_expression: ($) =>
       choice(
         $._literal,
+        $.array_literal,
+        $.tuple_expression,
         $.identifier,
         $.parenthesized_expression,
         $.generic_invocation_expression,  // Add this before regular invocation
@@ -320,17 +283,26 @@ module.exports = grammar({
       ),
 
     generic_invocation_expression: ($) =>
-      prec(
-        PRECEDENCE.INVOCATION + 1,  
+      prec.right(
+        PRECEDENCE.INVOCATION + 1,
         seq(
           field("function", $._expression),
           field("type_arguments", $.type_argument_list),
-          field("arguments", $.argument_list)
+          optional(field("arguments", $.argument_list))
         )
       ),
 
     parenthesized_expression: ($) => seq("(", $._expression, ")"),
 
+    tuple_expression: ($) =>
+      seq(
+        "(",
+        choice($._expression, seq(field("name", $.identifier), ":=", $._expression)),
+        ",",
+        commaSep1(choice($._expression, seq(field("name", $.identifier), ":=", $._expression))),
+        ")"
+      ),
+
     member_access_expression: ($) =>
       prec.left(
         PRECEDENCE.MEMBER_ACCESS,
@@ -350,20 +322,23 @@ module.exports = grammar({
         )
       ),
 
-    argument_list: ($) => seq("(", optional(commaSep1($._argument)), ")"),
+    argument_list: ($) => seq("(", optional($._arguments), ")"),
 
-    _argument: ($) =>
-      choice($._expression, $.named_argument, $.omitted_argument),
+    // Argument slots may be omitted between commas (`f(a,, b)`, `f(, x)`) —
+    // VB passes Optional parameters positionally by leaving the slot empty.
+    _arguments: ($) =>
+      seq($._argument, repeat(seq(",", optional($._argument)))),
 
-    omitted_argument: ($) => token(prec(1, ",")),
+    _argument: ($) => choice($._expression, $.named_argument),
 
     array_access_expression: ($) =>
       prec(
         PRECEDENCE.ARRAY_ACCESS,
         seq(
           field("array", $._expression),
+          optional("?"),
           "(",
-          field("indices", commaSep1($._expression)),
+          field("indices", $._arguments),
           ")"
         )
       ),
@@ -471,16 +446,53 @@ module.exports = grammar({
       ),
 
     lambda_expression: ($) =>
-      seq(
-        choice(ci("Function"), ci("Sub")),
-        field("parameters", $.lambda_parameter_list),
-        field("body", choice($._expression, $._statement_block))
+      choice(
+        prec.right(
+          seq(
+            optional(choice(ci("Async"), ci("Iterator"))),
+            choice(ci("Function"), ci("Sub")),
+            field("parameters", $.lambda_parameter_list),
+            field(
+              "body",
+              choice(
+                $._expression,
+                alias($.inline_if_statement, $.if_statement),
+                alias($.inline_throw_statement, $.throw_statement)
+              )
+            )
+          )
+        ),
+        seq(
+          optional(choice(ci("Async"), ci("Iterator"))),
+          ci("Function"),
+          field("parameters", $.lambda_parameter_list),
+          optional($.as_clause),
+          $._block_terminator,
+          repeat($._statement),
+          ci("End"), ci("Function")
+        ),
+        seq(
+          optional(choice(ci("Async"), ci("Iterator"))),
+          ci("Sub"),
+          field("parameters", $.lambda_parameter_list),
+          $._block_terminator,
+          repeat($._statement),
+          ci("End"), ci("Sub")
+        )
       ),
 
     lambda_parameter_list: ($) => seq("(", commaSep($.lambda_parameter), ")"),
 
     lambda_parameter: ($) =>
-      seq(field("name", $.identifier), optional($.as_clause)),
+      seq(
+        optional(field("modifiers", repeat1(choice(ci("ByVal"), ci("ByRef"))))),
+        field("name", $.identifier),
+        optional(choice(
+          $.array_rank_specifier,
+          seq("(", field("bounds", commaSep1($._expression)), ")")
+        )),
+        optional($.as_clause)
+      ),
 
     typeof_is_expression: ($) =>
       prec.left(
@@ -488,7 +500,7 @@ module.exports = grammar({
         seq(
           ci("TypeOf"),
           field("expression", $._expression),
-          ci("Is"),
+          choice(seq(ci("Is"), ci("Not")), token(prec(12, ci("IsNot"))), ci("Is")),
           field("type", $._type)
         )
       ),
@@ -504,29 +516,12 @@ module.exports = grammar({
             "initializer",
             choice(
               $.object_initializer, 
-              $.collection_initializer,
-              $.dictionary_initializer  // Add this new option
+              $.collection_initializer
             )
           )
         )
       ),
 
-    dictionary_initializer: ($) =>
-      seq(
-        ci("From"), 
-        "{", 
-        commaSep($.dictionary_element), 
-        "}"
-      ),
-    
-    dictionary_element: ($) =>
-      seq(
-        "{",
-        field("key", $._expression),
-        ",",
-        field("value", $._expression),
-        "}"
-      ),
 
 
     object_initializer: ($) =>
@@ -551,6 +546,8 @@ module.exports = grammar({
     collection_initializer: ($) =>
       seq(ci("From"), "{", commaSep($._expression), "}"),
 
+    array_literal: ($) => seq("{", commaSep($._expression), "}"),
+
 
     array_creation_expression: ($) =>
       seq(
@@ -646,6 +643,9 @@ module.exports = grammar({
       seq(field("object", $._expression), "!", field("member", $.identifier)),
     _literal: ($) =>
       choice(
+        $.xml_literal,
+        $.interpolated_string_literal,
+        $.date_literal,
         $.string_literal,
         $.character_literal,
         $.integer_literal,
@@ -654,16 +654,49 @@ module.exports = grammar({
         $.nothing_literal,
         $.date_literal
       ),
-    string_literal: ($) => seq('"', repeat(choice(/[^"\n]+/, '""')), '"'),
-    character_literal: ($) => seq('"', choice(/[^"\n]/, '""'), '"', "c"),
+    string_literal: ($) => token(seq('"', repeat(choice(/[^"]/, '""')), '"')),
+    interpolated_string_literal: ($) =>
+      seq(
+        '$"',
+        repeat(
+          choice(
+            token.immediate(prec(101, /[^"{}]+/)),
+            token.immediate(prec(101, '""')),
+            token.immediate(prec(101, "{{")),
+            token.immediate(prec(101, "}}")),
+            $.interpolation
+          )
+        ),
+        token.immediate('"')
+      ),
+    interpolation: ($) =>
+      seq(
+        token.immediate(prec(101, "{")),
+        $._expression,
+        optional(seq(",", /-?\d+/)),
+        optional(seq(":", /[^}"\r\n]+/)),
+        "}"
+      ),
+    date_literal: ($) => token(prec(2, /#[ \t]*\d[^#\r\n]*#/)),
+    character_literal: ($) => token(seq('"', choice(/[^"\r\n]/, '""'), '"', /[cC]/)),
     integer_literal: ($) =>
-      token(seq(/\d+/, optional(choice("I", "UI", "L", "UL", "S", "US")))),
+      token(
+        seq(
+          choice(
+            /\d+(_+\d+)*/,
+            /&[Hh][0-9A-Fa-f]+(_+[0-9A-Fa-f]+)*/,
+            /&[Oo][0-7]+(_+[0-7]+)*/,
+            /&[Bb][01]+(_+[01]+)*/
+          ),
+          optional(choice(/[Uu][SsIiLl]/, /[SsIiLl]/, "%", "&"))
+        )
+      ),
     floating_point_literal: ($) =>
       token(
         seq(
           choice(seq(/\d+/, ".", /\d+/), seq(".", /\d+/), /\d+/),
           optional(/[eE][+-]?\d+/),
-          optional(choice("F", "D", "R"))
+          optional(/[FfRrDd!#@]/)
         )
       ),
     boolean_literal: ($) => choice(ci("True"), ci("False")),
@@ -672,7 +705,7 @@ module.exports = grammar({
 
     // Names and types
     _name_reference: ($) =>
-      choice($.simple_name, $.qualified_name, $.global_qualified_name),
+      choice($.simple_name, $.generic_name, $.qualified_name, $.global_qualified_name),
 
     simple_name: ($) => $.identifier,
 
@@ -682,7 +715,7 @@ module.exports = grammar({
         seq(
           field("qualifier", $._name_reference),
           ".",
-          field("name", $.simple_name)
+          field("name", choice($.simple_name, $.generic_name))
         )
       ),
     global_qualified_name: ($) =>
@@ -694,6 +727,7 @@ module.exports = grammar({
         $.simple_name,
         $.qualified_name,
         $.generic_name,
+        $.global_qualified_name,
         $.predefined_type,
         $.array_type,
         $.tuple_type
@@ -720,7 +754,8 @@ module.exports = grammar({
       ),
 
     generic_name: ($) => seq(field("name", $.identifier), $.type_argument_list),
-    type_argument_list: ($) => seq("(", ci("Of"), commaSep1($._type), ")"),
+    type_argument_list: ($) =>
+      seq("(", ci("Of"), optional($._type), repeat(seq(",", optional($._type))), ")"),
     array_type: ($) =>
       seq(field("element_type", $._type), $.array_rank_specifier),
     array_rank_specifier: ($) => seq("(", repeat(","), ")"),
@@ -742,10 +777,14 @@ module.exports = grammar({
         field("type", $._type)
       ),
 
-    as_clause: ($) => seq(
-      ci("As"),
-      field("declared_type", $._type)
-    ),
+    as_clause: ($) =>
+      seq(
+        ci("As"),
+        choice(
+          $.object_creation_expression,
+          field("declared_type", $._type)
+        )
+      ),
 
     implements_member_clause: ($) =>
       seq(ci("Implements"), commaSep1($._name_reference)),
@@ -856,7 +895,7 @@ module.exports = grammar({
 
     enum_member_declaration: ($) =>
       seq(
-        optional(field("attributes", $.attribute_list)),
+        repeat(field("attributes", $.attribute_list)),
         field("name", $.identifier),
         optional(seq("=", field("value", $._expression))),
         $._terminator
@@ -882,6 +921,10 @@ module.exports = grammar({
         prec(10, $.inherits_statement),
         prec(10, $.implements_statement),
         prec(100, $.constructor_declaration),
+        prec(150, $.external_method_declaration),
+        prec(160, $.custom_event_declaration),
+        prec(170, $.abstract_method_declaration),
+        prec(171, $.abstract_property_declaration),
         // Explicitly add statements that can appear at class level
         prec(200, $.try_statement),      // Very high precedence
         prec(200, $.select_statement),   // Very high precedence
@@ -936,33 +979,21 @@ module.exports = grammar({
     variable_declarator: ($) =>
       seq(
         field("name", $.identifier),
+        optional("?"),
         optional(choice(
           // Array bounds specification
           seq("(", field("bounds", commaSep1($._expression)), ")"),
           // Array rank specification
           $.array_rank_specifier
         )),
-        optional(choice(
-          // Regular type declaration
-          $.as_clause,
-          seq(
-            ci("As"),
-            ci("New"),
-            field("type", $._type),
-            optional(field("arguments", $.argument_list)),
-            optional(field("initializer", choice(
-              $.object_initializer,
-              $.collection_initializer
-            )))
-          )
-        )),
+        optional($.as_clause),
         optional(seq("=", field("initializer", $._expression)))
       ),
 
 
     field_declaration: ($) =>
       prec.dynamic(-100, seq(
-        optional(field("attributes", $.attribute_list)),
+        repeat(field("attributes", $.attribute_list)),
         optional(field("modifiers", repeat1($.member_modifier))),
         commaSep1($.variable_declarator),
         $._terminator
@@ -970,7 +1001,8 @@ module.exports = grammar({
 
     field_variable_declarator: ($) =>
       seq(
-        field("name", $._non_statement_identifier),
+        field("name", $.identifier),
+        optional("?"),
         optional($.array_rank_specifier),
         optional($.as_clause),
         optional(seq("=", field("initializer", $._expression)))
@@ -978,12 +1010,13 @@ module.exports = grammar({
 
     property_declaration: ($) =>
       seq(
-        optional(field("attributes", $.attribute_list)),
+        repeat(field("attributes", $.attribute_list)),
         optional(field("modifiers", repeat1($.member_modifier))), // Changed
         ci("Property"),
         field("name", $.identifier),
         optional(field("parameters", $.parameter_list)),
-        $.as_clause,
+        optional($.as_clause),
+        optional(seq("=", field("initializer", $._expression))),
         optional($.implements_member_clause),
         optional(seq("=", field("initializer", $._expression))),
         choice(
@@ -1001,7 +1034,7 @@ module.exports = grammar({
 
     property_getter: ($) =>
       seq(
-        optional(field("attributes", $.attribute_list)),
+        repeat(field("attributes", $.attribute_list)),
         optional(field("modifiers", repeat1($.member_modifier))),
         ci("Get"),
         $._block_terminator,
@@ -1013,7 +1046,7 @@ module.exports = grammar({
 
     property_setter: ($) =>
       seq(
-        optional(field("attributes", $.attribute_list)),
+        repeat(field("attributes", $.attribute_list)),
         optional(field("modifiers", repeat1($.member_modifier))),
         ci("Set"),
         optional(seq("(", field("parameter", $.parameter), ")")),
@@ -1028,7 +1061,7 @@ module.exports = grammar({
       prec(
         1,
         seq(
-          optional(field("attributes", $.attribute_list)),
+          repeat(field("attributes", $.attribute_list)),
           optional(field("modifiers", repeat1($.member_modifier))),
           choice(
             seq(
@@ -1063,7 +1096,7 @@ module.exports = grammar({
       prec(
         100,
         seq(
-          optional(field("attributes", $.attribute_list)),
+          repeat(field("attributes", $.attribute_list)),
           optional(field("modifiers", repeat1($.member_modifier))),
           $._sub_new,
           optional(field("parameters", $.parameter_list)),
@@ -1087,7 +1120,7 @@ module.exports = grammar({
 
     event_declaration: ($) =>
       seq(
-        optional(field("attributes", $.attribute_list)),
+        repeat(field("attributes", $.attribute_list)),
         optional(field("modifiers", repeat1($.member_modifier))), // Changed
         ci("Event"),
         field("name", $.identifier),
@@ -1098,7 +1131,7 @@ module.exports = grammar({
 
     operator_declaration: ($) =>
       seq(
-        optional(field("attributes", $.attribute_list)),
+        repeat(field("attributes", $.attribute_list)),
         optional(field("modifiers", repeat1($.member_modifier))), // Changed
         ci("Operator"),
         field(
@@ -1152,7 +1185,7 @@ module.exports = grammar({
 
     interface_method_declaration: ($) =>
       seq(
-        optional(field("attributes", $.attribute_list)),
+        repeat(field("attributes", $.attribute_list)),
         optional(field("modifiers", repeat1($.member_modifier))), // Changed
         choice(ci("Sub"), ci("Function")),
         field("name", $.identifier),
@@ -1164,7 +1197,7 @@ module.exports = grammar({
 
     interface_property_declaration: ($) =>
       seq(
-        optional(field("attributes", $.attribute_list)),
+        repeat(field("attributes", $.attribute_list)),
         optional(field("modifiers", repeat1($.member_modifier))), // Changed
         ci("Property"),
         field("name", $.identifier),
@@ -1175,7 +1208,7 @@ module.exports = grammar({
 
     interface_event_declaration: ($) =>
       seq(
-        optional(field("attributes", $.attribute_list)),
+        repeat(field("attributes", $.attribute_list)),
         optional(field("modifiers", repeat1($.member_modifier))), // Changed
         ci("Event"),
         field("name", $.identifier),
@@ -1209,7 +1242,7 @@ module.exports = grammar({
 
     parameter: ($) =>
       seq(
-        optional(field("attributes", $.attribute_list)),
+        repeat(field("attributes", $.attribute_list)),
         optional(
           field(
             "modifiers",
@@ -1273,7 +1306,7 @@ module.exports = grammar({
 
     declaration_statement: ($) =>
       prec(1, seq(  // Add precedence
-        optional(field("attributes", $.attribute_list)),
+        repeat(field("attributes", $.attribute_list)),
         field("modifiers", choice(
           $.local_declaration_modifier,
           repeat1($.local_declaration_modifier)
@@ -1282,6 +1315,65 @@ module.exports = grammar({
         $._terminator
       )),
 
+    _inline_statements: ($) =>
+      prec.right(seq($._inline_statement, repeat(seq(":", $._inline_statement)))),
+
+    _inline_statement: ($) =>
+      choice(
+        alias($.inline_if_statement, $.if_statement),
+        alias($.inline_assignment_statement, $.assignment_statement),
+        alias($.inline_return_statement, $.return_statement),
+        alias($.inline_throw_statement, $.throw_statement),
+        alias($.inline_goto_statement, $.goto_statement),
+        alias($.inline_exit_statement, $.exit_statement),
+        alias($.inline_continue_statement, $.continue_statement),
+        alias($.inline_call_statement, $.call_statement),
+        alias($.inline_raiseevent_statement, $.raiseevent_statement),
+        alias($.inline_expression_statement, $.expression_statement)
+      ),
+
+    inline_assignment_statement: ($) =>
+      prec.right(
+        PRECEDENCE.ASSIGNMENT + 1,
+        seq(
+          field("left", choice(
+            $.identifier,
+            $.member_access_expression,
+            $.array_access_expression
+          )),
+          field(
+            "operator",
+            choice("=", "+=", "-=", "*=", "/=", "\\=", "^=", "&=", "<<=", ">>=")
+          ),
+          field("right", $._expression)
+        )
+      ),
+    inline_return_statement: ($) => prec.right(1, seq(ci("Return"), optional($._expression))),
+    inline_throw_statement: ($) => prec.right(1, seq(ci("Throw"), optional($._expression))),
+    inline_goto_statement: ($) => seq(ci("GoTo"), field("label", $.identifier)),
+    inline_exit_statement: ($) =>
+      seq(
+        ci("Exit"),
+        choice(ci("Do"), ci("For"), ci("While"), ci("Select"), ci("Sub"), ci("Function"), ci("Property"), ci("Try"))
+      ),
+    inline_continue_statement: ($) =>
+      seq(ci("Continue"), choice(ci("Do"), ci("For"), ci("While"))),
+    inline_call_statement: ($) => prec.right(1, seq(ci("Call"), $._expression)),
+    inline_raiseevent_statement: ($) =>
+      prec.right(1, seq(ci("RaiseEvent"), field("event", $.identifier), optional(field("arguments", $.argument_list)))),
+    inline_expression_statement: ($) => prec.right(1, $._expression),
+
+    inline_if_statement: ($) =>
+      prec.right(
+        seq(
+          ci("If"),
+          field("condition", $._expression),
+          ci("Then"),
+          field("then_statement", $._inline_statements),
+          optional(seq(ci("Else"), field("else_statement", $._inline_statements)))
+        )
+      ),
+
     expression_statement: ($) => seq($._expression, $._terminator),
 
     assignment_statement: ($) =>
@@ -1301,21 +1393,96 @@ module.exports = grammar({
           $._terminator
         )
       ),
+    custom_event_declaration: ($) =>
+      seq(
+        repeat(field("attributes", $.attribute_list)),
+        optional(field("modifiers", repeat1($.member_modifier))),
+        ci("Custom"),
+        ci("Event"),
+        field("name", $.identifier),
+        $.as_clause,
+        optional($.implements_member_clause),
+        $._block_terminator,
+        repeat($.event_accessor),
+        ci("End"), ci("Event"),
+        $._terminator
+      ),
+
+    event_accessor: ($) =>
+      seq(
+        choice(ci("AddHandler"), ci("RemoveHandler"), ci("RaiseEvent")),
+        optional(field("parameters", $.parameter_list)),
+        $._block_terminator,
+        repeat($._statement),
+        ci("End"),
+        choice(ci("AddHandler"), ci("RemoveHandler"), ci("RaiseEvent")),
+        $._terminator
+      ),
+
+    _mustoverride_token: ($) => token(prec(11, ci("MustOverride"))),
+
+    abstract_method_declaration: ($) =>
+      seq(
+        repeat(field("attributes", $.attribute_list)),
+        optional(field("modifiers", repeat1($.member_modifier))),
+        $._mustoverride_token,
+        optional(field("modifiers", repeat1($.member_modifier))),
+        choice(ci("Sub"), ci("Function")),
+        field("name", $.identifier),
+        optional(field("type_parameters", $.type_parameter_list)),
+        optional(field("parameters", $.parameter_list)),
+        optional($.as_clause),
+        optional($.implements_member_clause),
+        $._terminator
+      ),
+
+    abstract_property_declaration: ($) =>
+      seq(
+        repeat(field("attributes", $.attribute_list)),
+        optional(field("modifiers", repeat1($.member_modifier))),
+        $._mustoverride_token,
+        optional(field("modifiers", repeat1($.member_modifier))),
+        ci("Property"),
+        field("name", $.identifier),
+        optional(field("parameters", $.parameter_list)),
+        optional($.as_clause),
+        optional($.implements_member_clause),
+        $._terminator
+      ),
+
+    external_method_declaration: ($) =>
+      seq(
+        repeat(field("attributes", $.attribute_list)),
+        optional(field("modifiers", repeat1($.member_modifier))),
+        ci("Declare"),
+        optional(choice(ci("Auto"), ci("Ansi"), ci("Unicode"))),
+        choice(ci("Sub"), ci("Function")),
+        field("name", $.identifier),
+        ci("Lib"),
+        field("library", $.string_literal),
+        optional(seq(ci("Alias"), field("alias", $.string_literal))),
+        optional(field("parameters", $.parameter_list)),
+        optional($.as_clause),
+        $._terminator
+      ),
+
     call_statement: ($) => seq(ci("Call"), $._expression, $._terminator),
 
     if_statement: ($) =>
       seq(
         ci("If"),
         field("condition", $._expression),
-        ci("Then"),
         choice(
-          // Single-line if
+          // Single-line if: inline statements, optional Else, one terminator
           seq(
-            field("then_statement", $._statement),
-            optional(seq(ci("Else"), field("else_statement", $._statement)))
+            ci("Then"),
+            field("then_statement", $._inline_statements),
+            optional(seq(ci("Else"), field("else_statement", $._inline_statements))),
+            $._terminator
           ),
           // Multi-line if
           seq(
+            optional(ci("Then")),
             $._block_terminator,
             field("then_branch", repeat($._statement)),
             repeat($.elseif_clause),
@@ -1331,7 +1498,7 @@ module.exports = grammar({
       seq(
         ci("ElseIf"),
         field("condition", $._expression),
-        ci("Then"),
+        optional(ci("Then")),
         $._block_terminator,
         field("body", repeat($._statement))
       ),
@@ -1445,7 +1612,7 @@ module.exports = grammar({
     using_statement: ($) =>
       seq(
         ci("Using"),
-        field("resource", choice($.variable_declarator, $._expression)),
+        commaSep1(field("resource", choice($.variable_declarator, $._expression))),
         $._block_terminator,
         field("body", repeat($._statement)),
         ci("End"),
@@ -1590,14 +1757,25 @@ module.exports = grammar({
         $._terminator
       ), // LINQ Query expressions
     query_expression: ($) =>
-      seq($.from_clause, repeat($.query_body_clause), $.select_or_group_clause),
-    from_clause: ($) => seq(ci("From"), commaSep1($.collection_range_variable)),
+      prec.right(
+        choice(
+          seq(
+            $.from_clause,
+            repeat(seq(optional($._query_clause_continuation), $.query_body_clause)),
+            optional(seq(optional($._query_clause_continuation), $.select_or_group_clause))
+          ),
+          $.aggregate_clause
+        )
+      ),
+    from_clause: ($) => prec.right(seq(ci("From"), commaSep1($.collection_range_variable))),
     collection_range_variable: ($) =>
-      seq(
-        field("variable", $.identifier),
-        optional($.as_clause),
-        ci("In"),
-        field("collection", $._expression)
+      prec.right(
+        seq(
+          field("variable", $.identifier),
+          optional($.as_clause),
+          ci("In"),
+          field("collection", $._expression)
+        )
       ),
     query_body_clause: ($) =>
       choice(
@@ -1606,48 +1784,62 @@ module.exports = grammar({
         $.where_clause,
         $.join_clause,
         $.order_by_clause,
-        $.aggregate_clause
-      ),
-    let_clause: ($) => seq(ci("Let"), commaSep1($.expression_range_variable)),
+        $.aggregate_clause,
+        $.distinct_clause,
+        $.skip_take_clause
+      ),
+    distinct_clause: ($) => ci("Distinct"),
+    skip_take_clause: ($) =>
+      prec.right(seq(choice(ci("Skip"), ci("Take")), optional(ci("While")), $._expression)),
+    let_clause: ($) => prec.right(seq(ci("Let"), commaSep1($.expression_range_variable))),
     expression_range_variable: ($) =>
-      seq(
+      prec.right(seq(
         field("variable", $.identifier),
         "=",
         field("expression", $._expression)
-      ),
-    where_clause: ($) => seq(ci("Where"), field("condition", $._expression)),
+      )),
+    where_clause: ($) =>
+      prec.right(seq(ci("Where"), field("condition", $._expression))),
     join_clause: ($) =>
-      seq(
-        ci("Join"),
-        $.collection_range_variable,
-        ci("On"),
-        commaSep1($.join_condition)
+      prec.right(
+        seq(
+          ci("Join"),
+          $.collection_range_variable,
+          optional($._query_clause_continuation),
+          ci("On"),
+          commaSep1($.join_condition)
+        )
       ),
     join_condition: ($) =>
-      seq(
+      prec.right(seq(
         field("left", $._expression),
         ci("Equals"),
         field("right", $._expression)
-      ),
-    order_by_clause: ($) => seq(ci("Order"), ci("By"), commaSep1($.ordering)),
+      )),
+    order_by_clause: ($) => prec.right(seq(ci("Order"), ci("By"), commaSep1($.ordering))),
     ordering: ($) =>
-      seq(
-        field("expression", $._expression),
-        optional(choice(ci("Ascending"), ci("Descending")))
+      prec.right(
+        seq(
+          field("expression", $._expression),
+          optional(choice(ci("Ascending"), ci("Descending")))
+        )
       ),
     aggregate_clause: ($) =>
-      seq(
-        ci("Aggregate"),
-        $.collection_range_variable,
-        repeat($.query_body_clause),
-        ci("Into"),
-        commaSep1($.aggregate_element)
+      prec.right(
+        seq(
+          ci("Aggregate"),
+          $.collection_range_variable,
+          repeat(seq(optional($._query_clause_continuation), $.query_body_clause)),
+          optional($._query_clause_continuation),
+          ci("Into"),
+          commaSep1($.aggregate_element)
+        )
       ),
     aggregate_element: ($) =>
-      seq(
+      prec.right(seq(
         optional(seq(field("name", $.identifier), "=")),
         field("function", $.aggregate_function)
-      ),
+      )),
     aggregate_function: ($) =>
       seq(
         field(
@@ -1668,42 +1860,44 @@ module.exports = grammar({
     select_or_group_clause: ($) => choice($.select_clause, $.group_by_clause),
     select_clause: ($) => seq(ci("Select"), commaSep1($.select_element)),
     select_element: ($) =>
-      choice(
+      prec.right(choice(
         $._expression,
         seq(
           field("name", $.identifier),
           "=",
           field("expression", $._expression)
         )
-      ),
+      )),
     group_by_clause: ($) =>
-      seq(
-        ci("Group"),
-        commaSep1($.group_element),
-        ci("By"),
-        commaSep1($.by_element),
-        ci("Into"),
-        commaSep1($.into_element)
+      prec.right(
+        seq(
+          ci("Group"),
+          commaSep1($.group_element),
+          ci("By"),
+          commaSep1($.by_element),
+          ci("Into"),
+          commaSep1($.into_element)
+        )
       ),
     group_element: ($) =>
-      choice(
+      prec.right(choice(
         $._expression,
         seq(
           field("name", $.identifier),
           "=",
           field("expression", $._expression)
         )
-      ),
+      )),
     by_element: ($) =>
-      choice(
+      prec.right(choice(
         $._expression,
         seq(
           field("name", $.identifier),
           "=",
           field("expression", $._expression)
         )
-      ),
-    into_element: ($) => choice($.identifier, $.aggregate_element),
+      )),
+    into_element: ($) => prec.right(choice($.identifier, $.aggregate_element)),
 
     // Comments
     comment: ($) => token(prec(100, choice(
@@ -1714,7 +1908,7 @@ module.exports = grammar({
     ))),
 
     // Preprocessor Directives
-    preprocessor_directive: ($) => token(seq("#", /[^\r\n]*/)),
+    preprocessor_directive: ($) => token(seq("#", /[ \t]*[A-Za-z][^\r\n]*/)),
   },
 });
 
diff --git a/src/scanner.c b/src/scanner.c
new file mode 100644
index 0000000..8334fdb
--- /dev/null
+++ b/src/scanner.c
@@ -0,0 +1,303 @@
+#include "tree_sitter/parser.h"
+#include <string.h>
+#include <wctype.h>
+
+// External tokens for the two constructs that are not LR(1)-parseable with
+// tree-sitter's newline-as-extra treatment:
+//
+// 1. QUERY_CLAUSE_CONTINUATION — a newline run that CONTINUES a LINQ query
+//    (`From x In xs` ↵ `Where …`). At a clause boundary the parser cannot
+//    know from the newline alone whether the query ends (newline = statement
+//    terminator) or continues (newline = insignificant, next line starts with
+//    a query keyword). The scanner looks past the newline at the next word
+//    and only emits the token when it is a query-clause keyword — so the
+//    terminator/continuation choice is made by the lexer, not the LR table.
+//
+// 2. XML_LITERAL — a whole VB XML literal (`<Tags><Tag/></Tags>`, including
+//    `<%= expr %>` embedded expressions, comments, CDATA) consumed as one
+//    opaque token. Only valid where a literal can begin an expression, so a
+//    relational `<` (which always FOLLOWS an expression) can never collide.
+
+enum TokenType {
+  QUERY_CLAUSE_CONTINUATION,
+  XML_LITERAL,
+};
+
+void *tree_sitter_vbnet_external_scanner_create(void) { return NULL; }
+void tree_sitter_vbnet_external_scanner_destroy(void *payload) { (void)payload; }
+unsigned tree_sitter_vbnet_external_scanner_serialize(void *payload, char *buffer) {
+  (void)payload; (void)buffer;
+  return 0; // stateless
+}
+void tree_sitter_vbnet_external_scanner_deserialize(void *payload, const char *buffer, unsigned length) {
+  (void)payload; (void)buffer; (void)length;
+}
+
+static inline void advance(TSLexer *lexer) { lexer->advance(lexer, false); }
+static inline void skip_ws(TSLexer *lexer) { lexer->advance(lexer, true); }
+
+// Read one alphabetic word (advancing past it), lowercased into buf.
+// Returns its length (0 if the next char is not a letter).
+static int read_word(TSLexer *lexer, char *buf, int cap) {
+  int n = 0;
+  while (iswalpha((wint_t)lexer->lookahead)) {
+    if (n < cap - 1) buf[n] = (char)towlower((wint_t)lexer->lookahead);
+    n++;
+    advance(lexer);
+  }
+  buf[n < cap - 1 ? n : cap - 1] = 0;
+  return n;
+}
+
+static bool is_query_keyword(const char *w) {
+  static const char *kws[] = {
+    "where", "select", "order",    "group", "join", "let",  "skip",
+    "take",  "distinct", "aggregate", "from",  "into", "on",   NULL,
+  };
+  for (int i = 0; kws[i]; i++)
+    if (strcmp(w, kws[i]) == 0) return true;
+  return false;
+}
+
+// [ \t\r]* '\n' [ \t\r\n]*  followed by a query-clause keyword.
+// The token covers only the whitespace/newline run (mark_end before the
+// keyword lookahead), so the clause keyword itself lexes normally after it.
+static bool scan_query_continuation(TSLexer *lexer) {
+  bool saw_newline = false;
+  for (;;) {
+    int32_t c = lexer->lookahead;
+    if (c == ' ' || c == '\t' || c == '\r') {
+      advance(lexer);
+    } else if (c == '\n') {
+      saw_newline = true;
+      advance(lexer);
+    } else {
+      break;
+    }
+  }
+  if (!saw_newline) return false;
+  lexer->mark_end(lexer);
+
+  char w[12];
+  int n = read_word(lexer, w, sizeof w);
+  if (n == 0 || n >= (int)(sizeof w)) return false;
+  if (!is_query_keyword(w)) return false;
+
+  // `Select Case` opens a statement, never a select clause.
+  if (strcmp(w, "select") == 0) {
+    while (lexer->lookahead == ' ' || lexer->lookahead == '\t') advance(lexer);
+    char w2[8];
+    int m = read_word(lexer, w2, sizeof w2);
+    if (m > 0 && m < (int)(sizeof w2) && strcmp(w2, "case") == 0) return false;
+  }
+
+  lexer->result_symbol = QUERY_CLAUSE_CONTINUATION;
+  return true;
+}
+
+// Consume a VB string inside an embedded `<%= … %>` region ("" escapes).
+static void consume_vb_string(TSLexer *lexer) {
+  advance(lexer); // opening quote
+  for (;;) {
+    if (lexer->lookahead == 0) return;
+    if (lexer->lookahead == '"') {
+      advance(lexer);
+      if (lexer->lookahead != '"') return; // closing (not an escaped "")
+      // escaped quote: fall through, keep consuming
+    }
+    advance(lexer);
+  }
+}
+
+// Consume `<%= … %>` starting at the '%' (the '<' is already consumed).
+// Embedded expressions NEST (`<%= From t In ts Select <Tag><%= t.Name %></Tag> %>`,
+// the staxrip WriteTagfile shape), so track <% / %> depth.
+static bool consume_embedded_expression(TSLexer *lexer) {
+  advance(lexer); // '%'
+  int depth = 1;
+  for (;;) {
+    int32_t c = lexer->lookahead;
+    if (c == 0) return false;
+    if (c == '"') { consume_vb_string(lexer); continue; }
+    if (c == '<') {
+      advance(lexer);
+      if (lexer->lookahead == '%') { depth++; advance(lexer); }
+      continue;
+    }
+    if (c == '%') {
+      advance(lexer);
+      if (lexer->lookahead == '>') {
+        advance(lexer);
+        if (--depth == 0) return true;
+      }
+      continue;
+    }
+    advance(lexer);
+  }
+}
+
+// Consume `<!-- … -->` / `<![CDATA[ … ]]>` / `<!DOCTYPE …>` starting at '!'.
+static bool consume_bang_construct(TSLexer *lexer) {
+  advance(lexer); // '!'
+  if (lexer->lookahead == '-') {
+    // comment: to -->
+    int dashes = 0;
+    for (;;) {
+      int32_t c = lexer->lookahead;
+      if (c == 0) return false;
+      if (c == '-') { dashes++; advance(lexer); continue; }
+      if (c == '>' && dashes >= 2) { advance(lexer); return true; }
+      dashes = 0;
+      advance(lexer);
+    }
+  }
+  if (lexer->lookahead == '[') {
+    // CDATA: to ]]>
+    int brackets = 0;
+    for (;;) {
+      int32_t c = lexer->lookahead;
+      if (c == 0) return false;
+      if (c == ']') { brackets++; advance(lexer); continue; }
+      if (c == '>' && brackets >= 2) { advance(lexer); return true; }
+      brackets = 0;
+      advance(lexer);
+    }
+  }
+  // DOCTYPE-ish: to bare >
+  for (;;) {
+    int32_t c = lexer->lookahead;
+    if (c == 0) return false;
+    if (c == '>') { advance(lexer); return true; }
+    advance(lexer);
+  }
+}
+
+// Consume `<? … ?>` starting at the '?'.
+static bool consume_processing_instruction(TSLexer *lexer) {
+  advance(lexer); // '?'
+  for (;;) {
+    int32_t c = lexer->lookahead;
+    if (c == 0) return false;
+    if (c == '?') {
+      advance(lexer);
+      if (lexer->lookahead == '>') { advance(lexer); return true; }
+      continue;
+    }
+    advance(lexer);
+  }
+}
+
+static bool is_name_start(int32_t c) {
+  return iswalpha((wint_t)c) || c == '_';
+}
+
+static bool scan_xml_literal(TSLexer *lexer) {
+  // Only same-line blanks are skipped: a leading newline must stay unconsumed
+  // so it can serve as a statement/block terminator (a successful scan would
+  // otherwise swallow it as trivia). XML on a continuation line still works:
+  // the newline is consumed as an extra first, then the scanner re-runs.
+  while (lexer->lookahead == ' ' || lexer->lookahead == '\t') skip_ws(lexer);
+  if (lexer->lookahead != '<') return false;
+  advance(lexer);
+  // Only element-start markup opens an XML literal here; comments/PIs as the
+  // outermost construct (`Dim d = <?xml …`) are rare enough to leave alone,
+  // and a bare `<` (comparison) never begins an expression.
+  if (!is_name_start(lexer->lookahead)) return false;
+
+  int depth = 0;      // open (unclosed) elements
+  bool in_tag = true; // inside <...> of an element tag
+  bool closing = false;
+  int32_t quote = 0;
+
+  for (;;) {
+    int32_t c = lexer->lookahead;
+    if (c == 0) return false; // unterminated: let the normal parser error
+
+    if (in_tag) {
+      if (quote) {
+        if (c == quote) quote = 0;
+        advance(lexer);
+        continue;
+      }
+      if (c == '"' || c == '\'') { quote = c; advance(lexer); continue; }
+      if (c == '<') {
+        advance(lexer);
+        if (lexer->lookahead == '%') {
+          // attribute value embedded expression: attr=<%= x %>
+          if (!consume_embedded_expression(lexer)) return false;
+          continue;
+        }
+        continue; // stray < in a tag: malformed, keep consuming
+      }
+      if (c == '/') {
+        advance(lexer);
+        if (lexer->lookahead == '>') {
+          // self-closing tag
+          advance(lexer);
+          in_tag = false;
+          if (depth == 0) break; // single self-closed root: done
+          continue;
+        }
+        continue;
+      }
+      if (c == '>') {
+        advance(lexer);
+        if (closing) {
+          depth--;
+          if (depth <= 0) break; // root element closed: done
+        } else {
+          depth++;
+        }
+        in_tag = false;
+        continue;
+      }
+      advance(lexer);
+      continue;
+    }
+
+    // text content between tags
+    if (c == '<') {
+      advance(lexer);
+      int32_t d = lexer->lookahead;
+      if (d == '/') { advance(lexer); closing = true; in_tag = true; continue; }
+      if (d == '%') {
+        if (!consume_embedded_expression(lexer)) return false;
+        continue;
+      }
+      if (d == '!') {
+        if (!consume_bang_construct(lexer)) return false;
+        continue;
+      }
+      if (d == '?') {
+        if (!consume_processing_instruction(lexer)) return false;
+        continue;
+      }
+      closing = false;
+      in_tag = true; // opening tag
+      continue;
+    }
+    advance(lexer);
+  }
+
+  lexer->mark_end(lexer);
+  lexer->result_symbol = XML_LITERAL;
+  return true;
+}
+
+bool tree_sitter_vbnet_external_scanner_scan(void *payload, TSLexer *lexer, const bool *valid_symbols) {
+  (void)payload;
+  int32_t c = lexer->lookahead;
+  bool ws = (c == ' ' || c == '\t' || c == '\n' || c == '\r');
+
+  // A scan attempt advances the lexer, so exactly ONE attempt runs per
+  // invocation — never chain a second attempt after a failed first (its
+  // reads would start mid-stream). The leading character picks the branch;
+  // a false return discards the attempt entirely.
+  if (valid_symbols[QUERY_CLAUSE_CONTINUATION] && ws) {
+    return scan_query_continuation(lexer);
+  }
+  if (valid_symbols[XML_LITERAL] && (c == '<' || ws)) {
+    return scan_xml_literal(lexer);
+  }
+  return false;
+}