vbscript: Added support for parentheses in expressions.

dlls/vbscript/parser.y

@@ -73,7 +73,7 @@ static statement_t *new_call_statement(parser_ctx_t*,member_expression_t*);
 %token <string> tIdentifier tString
 
 %type <statement> Statement StatementNl
-%type <expression> Expression LiteralExpression
+%type <expression> Expression LiteralExpression PrimaryExpression
 %type <member> MemberExpression
 %type <expression> Arguments_opt ArgumentList_opt ArgumentList
 %type <bool> OptionExplicit_opt
@@ -120,12 +120,16 @@ EmptyBrackets_opt
 
 Expression
     : LiteralExpression /* FIXME */ { $$ = $1; }
+    | PrimaryExpression /* FIXME */ { $$ = $1; }
 
 LiteralExpression
     : tTRUE                         { $$ = new_bool_expression(ctx, VARIANT_TRUE); CHECK_ERROR; }
     | tFALSE                        { $$ = new_bool_expression(ctx, VARIANT_FALSE); CHECK_ERROR; }
     | tString                       { $$ = new_string_expression(ctx, $1); CHECK_ERROR; }
 
+PrimaryExpression
+    : '(' Expression ')'            { $$ = $2; }
+
 %%
 
 static int parser_error(const char *str)

dlls/vbscript/tests/lang.vbs

@@ -20,5 +20,6 @@ Option Explicit
 
 call ok(true, "true is not true?")
 ok true, "true is not true?"
+call ok((true), "true is not true?")
 
 reportSuccess()