✨ feat(lsp_completion): complete object creation and members

- Add class-name completion for `new` and `createobject("..."`.
- Generate constructor parameter snippets in completionItem/resolve.
- Support `obj.` instance member completion (methods/properties/fields).
- Infer `new`/`createobject` result types in SemanticModel TypeSystem.

lsp-server/src/language/semantic/analyzer.cppm

@@ -1158,6 +1158,25 @@ namespace lsp::language::semantic
         {
             if (auto* ident = dynamic_cast<ast::Identifier*>(call->callee.get()))
             {
+                if (utils::IEquals(ident->name, "createobject"))
+                {
+                    if (!call->arguments.empty() && call->arguments.front().value)
+                    {
+                        if (auto* lit = dynamic_cast<ast::Literal*>(call->arguments.front().value.get()))
+                        {
+                            if (lit->literal_kind == ast::LiteralKind::kString)
+                            {
+                                auto class_id = ResolveClassSymbol(lit->value, lit->location);
+                                if (class_id)
+                                {
+                                    return type_system.CreateClassType(*class_id);
+                                }
+                            }
+                        }
+                    }
+                    return type_system.GetUnknownType();
+                }
+
                 auto callee_id = ResolveIdentifier(ident->name, ident->location);
                 if (callee_id)
                 {

lsp-server/src/language/symbol/internal/builder.cppm

@@ -7,9 +7,140 @@ module lsp.language.symbol:internal.builder;
 import :types;
 import lsp.language.ast;
 import lsp.protocol.types;
+import lsp.utils.string;
 
 namespace lsp::language::symbol
 {
+    namespace
+    {
+        std::optional<std::string> UnquoteStringLiteral(std::string value)
+        {
+            if (value.size() < 2)
+            {
+                return std::nullopt;
+            }
+
+            char first = value.front();
+            char last = value.back();
+            if ((first == '"' && last == '"') || (first == '\'' && last == '\''))
+            {
+                value.erase(value.begin());
+                value.pop_back();
+                return value;
+            }
+
+            return std::nullopt;
+        }
+
+        std::optional<std::string> ExtractClassNameFromExpression(const ast::Expression* expr)
+        {
+            if (!expr)
+            {
+                return std::nullopt;
+            }
+
+            if (const auto* ident = dynamic_cast<const ast::Identifier*>(expr))
+            {
+                if (!ident->name.empty())
+                {
+                    return ident->name;
+                }
+                return std::nullopt;
+            }
+
+            if (const auto* attr = dynamic_cast<const ast::AttributeExpression*>(expr))
+            {
+                // Handle `unit(x).ClassName` by taking last attribute segment.
+                return ExtractClassNameFromExpression(attr->attribute.get());
+            }
+
+            if (const auto* call = dynamic_cast<const ast::CallExpression*>(expr))
+            {
+                return ExtractClassNameFromExpression(call->callee.get());
+            }
+
+            return std::nullopt;
+        }
+
+        std::optional<std::string> InferTypeFromExpression(const ast::Expression* expr)
+        {
+            if (!expr)
+            {
+                return std::nullopt;
+            }
+
+            if (const auto* new_expr = dynamic_cast<const ast::NewExpression*>(expr))
+            {
+                return ExtractClassNameFromExpression(new_expr->target.get());
+            }
+
+            if (const auto* call = dynamic_cast<const ast::CallExpression*>(expr))
+            {
+                const auto* callee_ident = dynamic_cast<const ast::Identifier*>(call->callee.get());
+                if (!callee_ident)
+                {
+                    return std::nullopt;
+                }
+
+                if (!utils::IEquals(utils::ToLower(callee_ident->name), "createobject"))
+                {
+                    return std::nullopt;
+                }
+
+                if (call->arguments.empty() || !call->arguments[0].value)
+                {
+                    return std::nullopt;
+                }
+
+                const auto* literal = dynamic_cast<const ast::Literal*>(call->arguments[0].value.get());
+                if (!literal || literal->literal_kind != ast::LiteralKind::kString)
+                {
+                    return std::nullopt;
+                }
+
+                if (auto unquoted = UnquoteStringLiteral(literal->value))
+                {
+                    if (!unquoted->empty())
+                    {
+                        return *unquoted;
+                    }
+                }
+                return std::nullopt;
+            }
+
+            return std::nullopt;
+        }
+
+        void MaybeUpdateSymbolType(SymbolTable& table, ScopeId scope_id, const std::string& name, const std::string& type_name)
+        {
+            if (name.empty() || type_name.empty())
+            {
+                return;
+            }
+
+            auto id_opt = table.scopes().FindSymbolInScopeChain(scope_id, name);
+            if (!id_opt)
+            {
+                return;
+            }
+
+            Symbol* symbol = const_cast<Symbol*>(table.definition(*id_opt));
+            if (!symbol)
+            {
+                return;
+            }
+
+            if (auto* var = symbol->As<Variable>())
+            {
+                var->type = type_name;
+            }
+            else if (auto* field = symbol->As<Field>())
+            {
+                field->type = type_name;
+            }
+        }
+    }
+
     Builder::Builder(SymbolTable& table) : table_(table),
                                            current_scope_id_(kInvalidScopeId),
                                            in_interface_section_(false),
@@ -544,7 +675,13 @@ namespace lsp::language::symbol
 
     void Builder::VisitVarDeclaration(ast::VarDeclaration& node)
     {
-        CreateSymbol(node.name, protocol::SymbolKind::Variable, node.location, ExtractTypeName(node.type));
+        auto type_hint = ExtractTypeName(node.type);
+        if (!type_hint && node.initializer && *node.initializer)
+        {
+            type_hint = InferTypeFromExpression(node.initializer->get());
+        }
+
+        CreateSymbol(node.name, protocol::SymbolKind::Variable, node.location, type_hint);
 
         if (node.initializer && *node.initializer)
         {
@@ -702,11 +839,40 @@ namespace lsp::language::symbol
 
     void Builder::VisitAssignmentExpression(ast::AssignmentExpression& node)
     {
+        std::optional<std::string> inferred_type;
+        if (node.right)
+        {
+            inferred_type = InferTypeFromExpression(node.right.get());
+        }
+
+        if (const auto* ident = std::get_if<std::unique_ptr<ast::Identifier>>(&node.left))
+        {
+            if (*ident)
+            {
+                auto existing = table_.scopes().FindSymbolInScopeChain(current_scope_id_, (*ident)->name);
+                if (!existing)
+                {
+                    CreateSymbol((*ident)->name, protocol::SymbolKind::Variable, (*ident)->location, inferred_type);
+                }
+            }
+        }
+
         ProcessLValue(node.left, true);
 
         if (node.right)
         {
             VisitExpression(*node.right);
+
+            if (inferred_type)
+            {
+                if (const auto* ident = std::get_if<std::unique_ptr<ast::Identifier>>(&node.left))
+                {
+                    if (*ident)
+                    {
+                        MaybeUpdateSymbolType(table_, current_scope_id_, (*ident)->name, *inferred_type);
+                    }
+                }
+            }
         }
     }
 

lsp-server/src/manager/symbol.cppm

@@ -1,6 +1,5 @@
 module;
 
-
 export module lsp.manager.symbol;
 import tree_sitter;
 import spdlog;
@@ -497,6 +496,11 @@ namespace lsp::manager
 
             analysis.semantic_model = std::make_unique<language::semantic::SemanticModel>(*analysis.symbol_table);
 
+            {
+                language::semantic::Analyzer analyzer(*analysis.symbol_table, *analysis.semantic_model);
+                analyzer.Analyze(*analysis.ast);
+            }
+
             {
                 std::unique_lock<std::shared_mutex> lock(mutex_);
                 editing_symbols_[event.item.uri] = std::move(analysis);

lsp-server/src/provider/completion_item/resolve.cppm

@@ -1,6 +1,5 @@
 module;
 
-
 export module lsp.provider.completion_item.resolve;
 import spdlog;
 
@@ -9,6 +8,9 @@ import std;
 import lsp.protocol;
 import lsp.codec.facade;
 import lsp.provider.base.interface;
+import lsp.language.symbol;
+import lsp.language.ast;
+import lsp.utils.string;
 
 namespace transform = lsp::codec;
 
@@ -27,6 +29,214 @@ export namespace lsp::provider::completion_item
 
 namespace lsp::provider::completion_item
 {
+    namespace
+    {
+        std::optional<std::string> GetStringField(const protocol::LSPObject& obj, const std::string& key)
+        {
+            auto it = obj.find(key);
+            if (it == obj.end() || !it->second.Is<protocol::string>())
+            {
+                return std::nullopt;
+            }
+            const auto& s = it->second.Get<protocol::string>();
+            return s;
+        }
+
+        std::optional<bool> GetBoolField(const protocol::LSPObject& obj, const std::string& key)
+        {
+            auto it = obj.find(key);
+            if (it == obj.end() || !it->second.Is<protocol::boolean>())
+            {
+                return std::nullopt;
+            }
+            return it->second.Get<protocol::boolean>();
+        }
+
+        std::string GetModuleName(const language::symbol::SymbolTable& table)
+        {
+            for (const auto& wrapper : table.all_definitions())
+            {
+                const auto& symbol = wrapper.get();
+                if (symbol.kind() == protocol::SymbolKind::Module)
+                {
+                    return symbol.name();
+                }
+            }
+            return "";
+        }
+
+        std::optional<const language::symbol::Symbol*> FindClassSymbol(
+            const language::symbol::SymbolTable& table,
+            const std::string& class_name)
+        {
+            auto ids = table.FindSymbolsByName(class_name);
+            for (auto id : ids)
+            {
+                const auto* symbol = table.definition(id);
+                if (symbol && symbol->kind() == protocol::SymbolKind::Class)
+                {
+                    return symbol;
+                }
+            }
+            return std::nullopt;
+        }
+
+        std::optional<language::symbol::ScopeId> FindScopeOwnedBy(
+            const language::symbol::SymbolTable& table,
+            language::symbol::ScopeKind kind,
+            language::symbol::SymbolId owner_id)
+        {
+            for (const auto& [scope_id, scope] : table.scopes().all_scopes())
+            {
+                if (scope.kind == kind && scope.owner && *scope.owner == owner_id)
+                {
+                    return scope_id;
+                }
+            }
+            return std::nullopt;
+        }
+
+        std::vector<const language::symbol::Method*> CollectConstructors(
+            const language::symbol::SymbolTable& table,
+            language::symbol::SymbolId class_id)
+        {
+            std::vector<const language::symbol::Method*> result;
+            auto scope_id = FindScopeOwnedBy(table, language::symbol::ScopeKind::kClass, class_id);
+            if (!scope_id)
+            {
+                return result;
+            }
+
+            const auto* scope = table.scopes().scope(*scope_id);
+            if (!scope)
+            {
+                return result;
+            }
+
+            for (const auto& [_, ids] : scope->symbols)
+            {
+                for (auto id : ids)
+                {
+                    const auto* member = table.definition(id);
+                    if (!member || member->kind() != protocol::SymbolKind::Method)
+                    {
+                        continue;
+                    }
+
+                    const auto* method = member->As<language::symbol::Method>();
+                    if (!method || method->method_kind != language::ast::MethodKind::kConstructor)
+                    {
+                        continue;
+                    }
+
+                    result.push_back(method);
+                }
+            }
+            return result;
+        }
+
+        const language::symbol::Method* PickBestConstructor(const std::vector<const language::symbol::Method*>& ctors)
+        {
+            const language::symbol::Method* best = nullptr;
+            std::size_t best_required = std::numeric_limits<std::size_t>::max();
+            std::size_t best_total = std::numeric_limits<std::size_t>::max();
+
+            for (const auto* ctor : ctors)
+            {
+                if (!ctor)
+                {
+                    continue;
+                }
+
+                std::size_t required = 0;
+                for (const auto& p : ctor->parameters)
+                {
+                    if (!p.default_value.has_value())
+                    {
+                        ++required;
+                    }
+                }
+
+                if (required < best_required || (required == best_required && ctor->parameters.size() < best_total))
+                {
+                    best = ctor;
+                    best_required = required;
+                    best_total = ctor->parameters.size();
+                }
+            }
+
+            return best;
+        }
+
+        std::string BuildSignature(const std::vector<language::symbol::Parameter>& params, const std::optional<std::string>& return_type)
+        {
+            std::string detail = "(";
+            for (std::size_t i = 0; i < params.size(); ++i)
+            {
+                if (i > 0)
+                    detail += ", ";
+                detail += params[i].name;
+                if (params[i].type && !params[i].type->empty())
+                    detail += ": " + *params[i].type;
+            }
+            detail += ")";
+            if (return_type && !return_type->empty())
+                detail += ": " + *return_type;
+            return detail;
+        }
+
+        std::string BuildNewSnippet(const std::string& class_name, const language::symbol::Method* ctor)
+        {
+            std::string snippet = class_name;
+            snippet += "(";
+
+            if (ctor && !ctor->parameters.empty())
+            {
+                for (std::size_t i = 0; i < ctor->parameters.size(); ++i)
+                {
+                    if (i > 0)
+                    {
+                        snippet += ", ";
+                    }
+                    const auto& p = ctor->parameters[i];
+                    snippet += "${" + std::to_string(i + 1) + ":" + p.name + "}";
+                }
+            }
+
+            snippet += ")";
+            snippet += "$0";
+            return snippet;
+        }
+
+        std::string BuildCreateObjectSnippet(const std::string& class_name,
+                                             const language::symbol::Method* ctor,
+                                             bool has_open_quote,
+                                             char quote_char)
+        {
+            std::string snippet;
+            if (!has_open_quote)
+            {
+                snippet.push_back(quote_char);
+            }
+
+            snippet += class_name;
+            snippet.push_back(quote_char);
+
+            if (ctor && !ctor->parameters.empty())
+            {
+                for (std::size_t i = 0; i < ctor->parameters.size(); ++i)
+                {
+                    snippet += ", ";
+                    const auto& p = ctor->parameters[i];
+                    snippet += "${" + std::to_string(i + 1) + ":" + p.name + "}";
+                }
+            }
+
+            snippet += "$0";
+            return snippet;
+        }
+    }
+
     std::string Resolve::GetMethod() const
     {
         return "completionItem/resolve";
@@ -40,8 +250,6 @@ namespace lsp::provider::completion_item
     std::string Resolve::ProvideResponse(const protocol::RequestMessage& request,
                                          ExecutionContext& execution_context)
     {
-        static_cast<void>(execution_context);
-
         if (!request.params.has_value())
         {
             spdlog::warn("{}: Missing params in request", GetProviderName());
@@ -52,7 +260,109 @@ namespace lsp::provider::completion_item
 
         protocol::CompletionItem item = transform::FromLSPAny.template operator()<protocol::CompletionItem>(request.params.value());
 
-        // 暂未迁移 resolve 逻辑，保持原样返回
+        if (item.data && item.data->Is<protocol::LSPObject>())
+        {
+            const auto& obj = item.data->Get<protocol::LSPObject>();
+            auto ctx = GetStringField(obj, "ctx");
+            auto class_name = GetStringField(obj, "class");
+            auto unit_name = GetStringField(obj, "unit");
+            auto uri = GetStringField(obj, "uri");
+
+            if (ctx && class_name && !class_name->empty() && uri)
+            {
+                auto& hub = execution_context.GetManagerHub();
+
+                const language::symbol::SymbolTable* editing_table = hub.symbols().GetSymbolTable(*uri);
+                auto workspace_tables = hub.symbols().GetWorkspaceSymbolTables();
+                auto system_tables = hub.symbols().GetSystemSymbolTables();
+
+                auto try_find = [&](const language::symbol::SymbolTable& table) -> std::optional<const language::symbol::SymbolTable*> {
+                    if (unit_name && !unit_name->empty())
+                    {
+                        auto module = GetModuleName(table);
+                        if (module.empty() || !utils::IEquals(module, *unit_name))
+                        {
+                            return std::nullopt;
+                        }
+                    }
+                    if (FindClassSymbol(table, *class_name))
+                    {
+                        return &table;
+                    }
+                    return std::nullopt;
+                };
+
+                const language::symbol::SymbolTable* table_for_class = nullptr;
+                if (editing_table)
+                {
+                    if (auto t = try_find(*editing_table))
+                        table_for_class = *t;
+                }
+                if (!table_for_class)
+                {
+                    for (const auto* t : workspace_tables)
+                    {
+                        if (!t)
+                            continue;
+                        if (auto found = try_find(*t))
+                        {
+                            table_for_class = *found;
+                            break;
+                        }
+                    }
+                }
+                if (!table_for_class)
+                {
+                    for (const auto* t : system_tables)
+                    {
+                        if (!t)
+                            continue;
+                        if (auto found = try_find(*t))
+                        {
+                            table_for_class = *found;
+                            break;
+                        }
+                    }
+                }
+
+                const language::symbol::Method* best_ctor = nullptr;
+                if (table_for_class)
+                {
+                    if (auto cls_sym = FindClassSymbol(*table_for_class, *class_name))
+                    {
+                        auto ctors = CollectConstructors(*table_for_class, (*cls_sym)->id());
+                        best_ctor = PickBestConstructor(ctors);
+
+                        if (!item.labelDetails)
+                        {
+                            item.labelDetails = protocol::CompletionItemLabelDetails{};
+                        }
+                        item.labelDetails->detail = best_ctor ? BuildSignature(best_ctor->parameters, best_ctor->return_type) : "";
+                    }
+                }
+
+                if (*ctx == "new")
+                {
+                    item.insertText = BuildNewSnippet(*class_name, best_ctor);
+                    item.insertTextFormat = protocol::InsertTextFormat::Snippet;
+                    item.kind = protocol::CompletionItemKind::Constructor;
+                }
+                else if (*ctx == "createobject")
+                {
+                    bool has_open_quote = GetBoolField(obj, "has_open_quote").value_or(false);
+                    char quote_char = '"';
+                    if (auto quote = GetStringField(obj, "quote"); quote && !quote->empty())
+                    {
+                        quote_char = (*quote)[0];
+                    }
+
+                    item.insertText = BuildCreateObjectSnippet(*class_name, best_ctor, has_open_quote, quote_char);
+                    item.insertTextFormat = protocol::InsertTextFormat::Snippet;
+                    item.kind = protocol::CompletionItemKind::Constructor;
+                }
+            }
+        }
+
         protocol::ResponseMessage response;
         response.id = request.id;
         response.result = transform::ToLSPAny(item);

lsp-server/src/provider/text_document/completion.cppm

@@ -12,6 +12,7 @@ import lsp.codec.facade;
 import lsp.provider.base.interface;
 import lsp.language.ast;
 import lsp.language.symbol;
+import lsp.language.semantic;
 import lsp.language.keyword;
 import lsp.utils.string;
 import lsp.utils.text_coordinates;
@@ -49,13 +50,18 @@ namespace lsp::provider::text_document
             std::string prefix;
             std::string class_name;
             bool is_new_context = false;
+            bool is_createobject_context = false;
             bool is_unit_context = false;
             bool is_class_context = false;
             bool is_class_method_context = false;
             bool is_unit_member_context = false;
+            bool is_object_member_context = false;
             bool is_unit_scoped_new = false;
             std::string unit_name;
             std::string member_prefix;
+            std::string object_name;
+            bool createobject_has_open_quote = false;
+            char createobject_quote = '"';
         };
 
         struct SourcedCompletionItem
@@ -85,14 +91,17 @@ namespace lsp::provider::text_document
             switch (kind)
             {
             case protocol::SymbolKind::Function:
-            case protocol::SymbolKind::Method:
                 return protocol::CompletionItemKind::Function;
+            case protocol::SymbolKind::Method:
+                return protocol::CompletionItemKind::Method;
             case protocol::SymbolKind::Constructor:
                 return protocol::CompletionItemKind::Constructor;
             case protocol::SymbolKind::Class:
                 return protocol::CompletionItemKind::Class;
             case protocol::SymbolKind::Property:
                 return protocol::CompletionItemKind::Property;
+            case protocol::SymbolKind::Field:
+                return protocol::CompletionItemKind::Field;
             case protocol::SymbolKind::Variable:
             case protocol::SymbolKind::TypeParameter:
                 return protocol::CompletionItemKind::Variable;
@@ -133,6 +142,60 @@ namespace lsp::provider::text_document
             return after_new.find('(') == std::string::npos;
         }
 
+        struct CreateObjectContextInfo
+        {
+            std::string prefix;
+            bool has_open_quote = false;
+            char quote = '"';
+        };
+
+        bool IsCreateObjectContext(const std::string& line, CreateObjectContextInfo& out)
+        {
+            std::string line_lower = utils::ToLower(line);
+            std::size_t pos = line_lower.rfind("createobject(");
+            if (pos == std::string::npos)
+            {
+                return false;
+            }
+
+            std::string after = line.substr(pos + std::string("createobject(").size());
+            std::size_t i = 0;
+            while (i < after.size() && std::isspace(static_cast<unsigned char>(after[i])))
+            {
+                ++i;
+            }
+            after = after.substr(i);
+
+            if (after.empty())
+            {
+                out = CreateObjectContextInfo{};
+                return true;
+            }
+
+            if (after.find(',') != std::string::npos)
+            {
+                return false;
+            }
+
+            char first = after.front();
+            if (first == '"' || first == '\'')
+            {
+                out.has_open_quote = true;
+                out.quote = first;
+                out.prefix = after.substr(1);
+                if (out.prefix.find(first) != std::string::npos)
+                {
+                    return false;
+                }
+                return true;
+            }
+
+            out.prefix = after;
+            out.has_open_quote = false;
+            out.quote = '"';
+            return true;
+        }
+
         bool IsClassMethodContext(const std::string& line, std::string& out_class_name, std::string& out_prefix)
         {
             std::string line_lower = utils::ToLower(line);
@@ -179,57 +242,6 @@ namespace lsp::provider::text_document
             return after.find(')') == std::string::npos;
         }
 
-        std::optional<CompletionContext> DetectUnitMemberContext(const std::string& line)
-        {
-            CompletionContext ctx;
-            // unit(xxx).prefix
-            {
-                std::string line_lower = utils::ToLower(line);
-                std::size_t unit_pos = line_lower.rfind("unit(");
-                if (unit_pos != std::string::npos)
-                {
-                    std::string after_unit = line.substr(unit_pos + 5);
-                    std::size_t close_paren = after_unit.find(')');
-                    std::size_t dot_pos = after_unit.find('.');
-                    if (dot_pos != std::string::npos && dot_pos > 0)
-                    {
-                        std::size_t name_end = close_paren != std::string::npos && close_paren < dot_pos ? close_paren : dot_pos;
-                        ctx.unit_name = utils::Trim(after_unit.substr(0, name_end));
-                        ctx.member_prefix = utils::Trim(after_unit.substr(dot_pos + 1));
-                        ctx.is_unit_member_context = !ctx.unit_name.empty();
-                        if (ctx.is_unit_member_context)
-                            return ctx;
-                    }
-                }
-            }
-
-            // alias.prefix
-            std::size_t dot_pos = line.rfind('.');
-            if (dot_pos != std::string::npos)
-            {
-                // find token before dot
-                std::size_t start = dot_pos;
-                while (start > 0)
-                {
-                    char ch = line[start - 1];
-                    if (!std::isalnum(static_cast<unsigned char>(ch)) && ch != '_')
-                        break;
-                    --start;
-                }
-                std::string alias = utils::Trim(line.substr(start, dot_pos - start));
-                std::string prefix = utils::Trim(line.substr(dot_pos + 1));
-                if (!alias.empty())
-                {
-                    ctx.is_unit_member_context = true;
-                    ctx.unit_name = alias;
-                    ctx.member_prefix = prefix;
-                    return ctx;
-                }
-            }
-
-            return std::nullopt;
-        }
-
         std::string ExtractPrefixByScan(std::size_t cursor_pos, std::size_t line_start, const std::string& content)
         {
             std::size_t prefix_start = cursor_pos;
@@ -279,18 +291,29 @@ namespace lsp::provider::text_document
             }
             else
             {
-                result.is_new_context = IsNewContext(result.line_content);
-                result.is_unit_context = IsUnitContext(result.line_content);
-                result.is_class_context = IsClassContext(result.line_content);
-
-                if (result.is_new_context)
-                    result.prefix = utils::Trim(result.line_content.substr(result.line_content.rfind("new ") + 4));
-                else if (result.is_unit_context)
-                    result.prefix = utils::Trim(result.line_content.substr(result.line_content.rfind("unit(") + 5));
-                else if (result.is_class_context)
-                    result.prefix = utils::Trim(result.line_content.substr(result.line_content.rfind("class(") + 6));
+                CreateObjectContextInfo create_info;
+                result.is_createobject_context = IsCreateObjectContext(result.line_content, create_info);
+                if (result.is_createobject_context)
+                {
+                    result.prefix = utils::Trim(create_info.prefix);
+                    result.createobject_has_open_quote = create_info.has_open_quote;
+                    result.createobject_quote = create_info.quote;
+                }
                 else
-                    result.prefix = ExtractPrefixByScan(cursor_pos, line_start, content);
+                {
+                    result.is_new_context = IsNewContext(result.line_content);
+                    result.is_unit_context = IsUnitContext(result.line_content);
+                    result.is_class_context = IsClassContext(result.line_content);
+
+                    if (result.is_new_context)
+                        result.prefix = utils::Trim(result.line_content.substr(result.line_content.rfind("new ") + 4));
+                    else if (result.is_unit_context)
+                        result.prefix = utils::Trim(result.line_content.substr(result.line_content.rfind("unit(") + 5));
+                    else if (result.is_class_context)
+                        result.prefix = utils::Trim(result.line_content.substr(result.line_content.rfind("class(") + 6));
+                    else
+                        result.prefix = ExtractPrefixByScan(cursor_pos, line_start, content);
+                }
             }
             return result;
         }
@@ -458,18 +481,45 @@ namespace lsp::provider::text_document
 
         bool HasStaticMethod(const language::symbol::Class& cls, const language::symbol::SymbolTable& table)
         {
-            for (auto member_id : cls.members)
+            const auto& scopes = table.scopes().all_scopes();
+            for (const auto& [_, scope] : scopes)
             {
-                const auto* member = table.definition(member_id);
-                if (!member || member->kind() != protocol::SymbolKind::Method)
+                if (scope.kind != language::symbol::ScopeKind::kClass || !scope.owner || *scope.owner != cls.id)
+                {
                     continue;
-                const auto* method = member->As<language::symbol::Method>();
-                if (method && method->is_static)
-                    return true;
+                }
+
+                for (const auto& [_, ids] : scope.symbols)
+                {
+                    for (auto id : ids)
+                    {
+                        const auto* member = table.definition(id);
+                        if (!member || member->kind() != protocol::SymbolKind::Method)
+                            continue;
+                        const auto* method = member->As<language::symbol::Method>();
+                        if (method && method->is_static)
+                            return true;
+                    }
+                }
             }
             return false;
         }
 
+        std::optional<language::symbol::ScopeId> FindScopeOwnedBy(
+            const language::symbol::SymbolTable& table,
+            language::symbol::ScopeKind kind,
+            language::symbol::SymbolId owner_id)
+        {
+            for (const auto& [scope_id, scope] : table.scopes().all_scopes())
+            {
+                if (scope.kind == kind && scope.owner && *scope.owner == owner_id)
+                {
+                    return scope_id;
+                }
+            }
+            return std::nullopt;
+        }
+
         void AppendClasses(const language::symbol::SymbolTable& table,
                            const std::string& prefix,
                            CompletionSource source,
@@ -477,9 +527,9 @@ namespace lsp::provider::text_document
                            bool mark_new_context,
                            const std::string& unit_filter = "")
         {
+            auto module_name = GetModuleName(table);
             if (!unit_filter.empty())
             {
-                auto module_name = GetModuleName(table);
                 if (module_name.empty() || !utils::IEquals(module_name, unit_filter))
                     return;
             }
@@ -493,14 +543,23 @@ namespace lsp::provider::text_document
                     continue;
 
                 const auto* cls = symbol.As<language::symbol::Class>();
-                if (!cls || !HasStaticMethod(*cls, table))
+                if (!cls)
+                    continue;
+
+                if (!mark_new_context && !HasStaticMethod(*cls, table))
                     continue;
 
                 protocol::CompletionItem item;
                 item.label = symbol.name();
-                item.kind = ToCompletionItemKind(symbol.kind());
+                item.kind = mark_new_context ? protocol::CompletionItemKind::Constructor : ToCompletionItemKind(symbol.kind());
                 item.labelDetails = protocol::CompletionItemLabelDetails{ .detail = "", .description = SourceTag(source) };
-                item.data = protocol::LSPAny(mark_new_context ? "new_context" : "class_context");
+
+                protocol::LSPObject data;
+                data["ctx"] = mark_new_context ? "new" : "class";
+                data["class"] = symbol.name();
+                data["unit"] = module_name;
+                item.data = std::move(data);
+
                 out.push_back({ std::move(item), source });
             }
         }
@@ -544,32 +603,301 @@ namespace lsp::provider::text_document
             return std::nullopt;
         }
 
+        struct DotAccessContext
+        {
+            bool is_unit_call = false;
+            std::string base_name;
+            std::string member_prefix;
+        };
+
+        std::optional<DotAccessContext> DetectDotAccessContext(const std::string& line)
+        {
+            // unit(xxx).prefix
+            {
+                std::string line_lower = utils::ToLower(line);
+                std::size_t unit_pos = line_lower.rfind("unit(");
+                if (unit_pos != std::string::npos)
+                {
+                    std::string after_unit = line.substr(unit_pos + 5);
+                    std::size_t close_paren = after_unit.find(')');
+                    if (close_paren == std::string::npos)
+                    {
+                        return std::nullopt;
+                    }
+                    std::size_t dot_pos = after_unit.find('.', close_paren);
+                    if (dot_pos != std::string::npos && dot_pos > close_paren)
+                    {
+                        DotAccessContext ctx;
+                        ctx.is_unit_call = true;
+                        ctx.base_name = utils::Trim(after_unit.substr(0, close_paren));
+                        ctx.member_prefix = utils::Trim(after_unit.substr(dot_pos + 1));
+                        if (!ctx.base_name.empty())
+                        {
+                            return ctx;
+                        }
+                    }
+                }
+            }
+
+            // ident.prefix
+            std::size_t dot_pos = line.rfind('.');
+            if (dot_pos == std::string::npos)
+            {
+                return std::nullopt;
+            }
+
+            std::size_t start = dot_pos;
+            while (start > 0)
+            {
+                char ch = line[start - 1];
+                if (!std::isalnum(static_cast<unsigned char>(ch)) && ch != '_')
+                    break;
+                --start;
+            }
+
+            std::string base = utils::Trim(line.substr(start, dot_pos - start));
+            if (base.empty())
+            {
+                return std::nullopt;
+            }
+
+            DotAccessContext ctx;
+            ctx.base_name = std::move(base);
+            ctx.member_prefix = utils::Trim(line.substr(dot_pos + 1));
+            return ctx;
+        }
+
         void AppendClassMethods(const language::symbol::SymbolTable& table, const language::symbol::Class& cls, const std::string& prefix, CompletionSource source, std::vector<SourcedCompletionItem>& out)
         {
-            for (auto member_id : cls.members)
+            auto scope_id = FindScopeOwnedBy(table, language::symbol::ScopeKind::kClass, cls.id);
+            if (!scope_id)
             {
-                const auto* member_symbol = table.definition(member_id);
-                if (!member_symbol || member_symbol->kind() != protocol::SymbolKind::Method)
-                    continue;
+                return;
+            }
 
-                const auto* method = member_symbol->As<language::symbol::Method>();
-                if (!method)
-                    continue;
+            const auto* scope = table.scopes().scope(*scope_id);
+            if (!scope)
+            {
+                return;
+            }
 
-                // 仅补全类方法（静态）
-                if (!method->is_static)
-                    continue;
+            for (const auto& [_, ids] : scope->symbols)
+            {
+                for (auto id : ids)
+                {
+                    const auto* member_symbol = table.definition(id);
+                    if (!member_symbol || member_symbol->kind() != protocol::SymbolKind::Method)
+                        continue;
 
-                if (!prefix.empty() && !utils::IStartsWith(method->name, prefix))
+                    const auto* method = member_symbol->As<language::symbol::Method>();
+                    if (!method)
+                        continue;
+
+                    // 仅补全类方法（静态）
+                    if (!method->is_static)
+                        continue;
+
+                    if (!prefix.empty() && !utils::IStartsWith(method->name, prefix))
+                        continue;
+
+                    protocol::CompletionItem item;
+                    item.label = method->name;
+                    item.kind = protocol::CompletionItemKind::Method;
+                    item.labelDetails = protocol::CompletionItemLabelDetails{
+                        .detail = BuildSignature(method->parameters, method->return_type),
+                        .description = SourceTag(source)
+                    };
+                    out.push_back({ std::move(item), source });
+                }
+            }
+        }
+
+        std::optional<std::string> ResolveTypeNameInScope(
+            const language::symbol::SymbolTable& table,
+            const language::semantic::SemanticModel* semantic,
+            const protocol::Position& position,
+            const std::string& content,
+            const std::string& name)
+        {
+            if (name.empty())
+            {
+                return std::nullopt;
+            }
+
+            std::uint32_t offset = utils::text_coordinates::ToOffset(position, content);
+            language::ast::Location loc{};
+            loc.start_line = loc.end_line = position.line;
+            loc.start_column = loc.end_column = position.character;
+            loc.start_offset = loc.end_offset = offset;
+
+            auto scope_id = table.scopes().FindScopeAt(loc);
+            if (!scope_id)
+            {
+                return std::nullopt;
+            }
+
+            auto symbol_id = table.scopes().FindSymbolInScopeChain(*scope_id, name);
+            if (!symbol_id)
+            {
+                return std::nullopt;
+            }
+
+            const auto* sym = table.definition(*symbol_id);
+            if (!sym)
+            {
+                return std::nullopt;
+            }
+
+            if (semantic)
+            {
+                auto type = semantic->type_system().GetSymbolType(*symbol_id);
+                if (type && type->kind() == language::semantic::TypeKind::kClass)
+                {
+                    if (const auto* class_type = type->As<language::semantic::ClassType>())
+                    {
+                        if (const auto* class_symbol = table.definition(class_type->class_id()))
+                        {
+                            return class_symbol->name();
+                        }
+                    }
+                }
+            }
+
+            if (const auto* var = sym->As<language::symbol::Variable>())
+            {
+                return var->type;
+            }
+
+            if (const auto* field = sym->As<language::symbol::Field>())
+            {
+                return field->type;
+            }
+
+            return std::nullopt;
+        }
+
+        void AppendInstanceMembers(const language::symbol::SymbolTable& table,
+                                   language::symbol::SymbolId class_id,
+                                   const std::string& prefix,
+                                   CompletionSource source,
+                                   std::vector<SourcedCompletionItem>& out)
+        {
+            auto scope_id = FindScopeOwnedBy(table, language::symbol::ScopeKind::kClass, class_id);
+            if (!scope_id)
+            {
+                return;
+            }
+
+            const auto* scope = table.scopes().scope(*scope_id);
+            if (!scope)
+            {
+                return;
+            }
+
+            for (const auto& [_, ids] : scope->symbols)
+            {
+                for (auto id : ids)
+                {
+                    const auto* member = table.definition(id);
+                    if (!member)
+                    {
+                        continue;
+                    }
+
+                    if (!prefix.empty() && !utils::IStartsWith(member->name(), prefix))
+                    {
+                        continue;
+                    }
+
+                    if (member->kind() == protocol::SymbolKind::Method)
+                    {
+                        const auto* method = member->As<language::symbol::Method>();
+                        if (!method || method->is_static)
+                        {
+                            continue;
+                        }
+                        if (method->method_kind == language::ast::MethodKind::kConstructor ||
+                            method->method_kind == language::ast::MethodKind::kDestructor)
+                        {
+                            continue;
+                        }
+
+                        protocol::CompletionItem item;
+                        item.label = method->name;
+                        item.kind = protocol::CompletionItemKind::Method;
+                        item.labelDetails = protocol::CompletionItemLabelDetails{
+                            .detail = BuildSignature(method->parameters, method->return_type),
+                            .description = SourceTag(source)
+                        };
+                        out.push_back({ std::move(item), source });
+                        continue;
+                    }
+
+                    if (member->kind() == protocol::SymbolKind::Property)
+                    {
+                        protocol::CompletionItem item;
+                        item.label = member->name();
+                        item.kind = protocol::CompletionItemKind::Property;
+                        item.labelDetails = protocol::CompletionItemLabelDetails{ .detail = "", .description = SourceTag(source) };
+                        out.push_back({ std::move(item), source });
+                        continue;
+                    }
+
+                    if (member->kind() == protocol::SymbolKind::Field)
+                    {
+                        const auto* field = member->As<language::symbol::Field>();
+                        if (!field || field->is_static)
+                        {
+                            continue;
+                        }
+
+                        protocol::CompletionItem item;
+                        item.label = field->name;
+                        item.kind = protocol::CompletionItemKind::Field;
+                        item.labelDetails = protocol::CompletionItemLabelDetails{ .detail = "", .description = SourceTag(source) };
+                        out.push_back({ std::move(item), source });
+                        continue;
+                    }
+                }
+            }
+        }
+
+        void AppendCreateObjectClasses(const language::symbol::SymbolTable& table,
+                                       const std::string& prefix,
+                                       CompletionSource source,
+                                       std::vector<SourcedCompletionItem>& out,
+                                       bool has_open_quote,
+                                       char quote_char,
+                                       const std::string& unit_filter = "")
+        {
+            auto module_name = GetModuleName(table);
+            if (!unit_filter.empty())
+            {
+                if (module_name.empty() || !utils::IEquals(module_name, unit_filter))
+                    return;
+            }
+
+            for (const auto& wrapper : table.all_definitions())
+            {
+                const auto& symbol = wrapper.get();
+                if (symbol.kind() != protocol::SymbolKind::Class)
+                    continue;
+                if (!prefix.empty() && !utils::IStartsWith(symbol.name(), prefix))
                     continue;
 
                 protocol::CompletionItem item;
-                item.label = method->name;
-                item.kind = protocol::CompletionItemKind::Function;
-                item.labelDetails = protocol::CompletionItemLabelDetails{
-                    .detail = BuildSignature(method->parameters, method->return_type),
-                    .description = SourceTag(source)
-                };
+                item.label = symbol.name();
+                item.kind = protocol::CompletionItemKind::Constructor;
+                item.labelDetails = protocol::CompletionItemLabelDetails{ .detail = "", .description = SourceTag(source) };
+
+                protocol::LSPObject data;
+                data["ctx"] = "createobject";
+                data["class"] = symbol.name();
+                data["unit"] = module_name;
+                data["has_open_quote"] = has_open_quote;
+                data["quote"] = std::string(1, quote_char);
+                item.data = std::move(data);
+
                 out.push_back({ std::move(item), source });
             }
         }
@@ -650,21 +978,11 @@ namespace lsp::provider::text_document
             const auto content = manager_hub.documents().GetContent(params.textDocument.uri);
             auto context = AnalyzeContext(params, content);
 
-            if (!context.is_class_method_context)
-            {
-                if (auto unit_ctx = DetectUnitMemberContext(context.line_content))
-                {
-                    context.is_unit_member_context = unit_ctx->is_unit_member_context;
-                    context.unit_name = unit_ctx->unit_name;
-                    context.member_prefix = unit_ctx->member_prefix;
-                    context.prefix = unit_ctx->member_prefix;
-                }
-            }
-
             std::vector<SourcedCompletionItem> collected;
 
             // 当前文档符号表
             const auto* editing_table = manager_hub.symbols().GetSymbolTable(params.textDocument.uri);
+            const auto* editing_semantic = manager_hub.symbols().GetSemanticModel(params.textDocument.uri);
             // 工作区/系统符号表
             auto workspace_tables = manager_hub.symbols().GetWorkspaceSymbolTables();
             auto system_tables = manager_hub.symbols().GetSystemSymbolTables();
@@ -677,6 +995,42 @@ namespace lsp::provider::text_document
                     visible_units_set.insert(u);
             }
 
+            // Member access context (unit/obj)
+            if (!context.is_class_method_context &&
+                !context.is_new_context &&
+                !context.is_unit_context &&
+                !context.is_class_context &&
+                !context.is_createobject_context)
+            {
+                if (auto dot_ctx = DetectDotAccessContext(context.line_content))
+                {
+                    context.prefix = dot_ctx->member_prefix;
+                    context.member_prefix = dot_ctx->member_prefix;
+
+                    if (dot_ctx->is_unit_call)
+                    {
+                        if (IsUnitVisible(visible_units_set, dot_ctx->base_name))
+                        {
+                            context.is_unit_member_context = true;
+                            context.unit_name = dot_ctx->base_name;
+                        }
+                    }
+                    else
+                    {
+                        if (IsUnitVisible(visible_units_set, dot_ctx->base_name))
+                        {
+                            context.is_unit_member_context = true;
+                            context.unit_name = dot_ctx->base_name;
+                        }
+                        else
+                        {
+                            context.is_object_member_context = true;
+                            context.object_name = dot_ctx->base_name;
+                        }
+                    }
+                }
+            }
+
             // 处理 new unit(...) 或 alias.class
             if (context.is_new_context && !context.prefix.empty())
             {
@@ -776,6 +1130,34 @@ namespace lsp::provider::text_document
                         AppendUnitMembers(*table, context.unit_name, context.member_prefix, CompletionSource::kSystem, collected);
                 }
             }
+            else if (context.is_object_member_context)
+            {
+                if (editing_table && content)
+                {
+                    if (auto type_name = ResolveTypeNameInScope(*editing_table, editing_semantic, params.position, *content, context.object_name))
+                    {
+                        bool found_class = false;
+
+                        auto try_append = [&](const language::symbol::SymbolTable& table, CompletionSource source) {
+                            auto cls_opt = FindClassSymbol(table, *type_name);
+                            if (!cls_opt)
+                            {
+                                return;
+                            }
+                            AppendInstanceMembers(table, (*cls_opt)->id(), context.member_prefix, source, collected);
+                            found_class = true;
+                        };
+
+                        try_append(*editing_table, CompletionSource::kEditing);
+                        for (const auto* table : workspace_tables)
+                            try_append(*table, CompletionSource::kWorkspace);
+                        for (const auto* table : system_tables)
+                            try_append(*table, CompletionSource::kSystem);
+
+                        (void)found_class;
+                    }
+                }
+            }
             else if (context.is_new_context)
             {
                 if (context.is_unit_scoped_new && !context.unit_name.empty())
@@ -797,6 +1179,15 @@ namespace lsp::provider::text_document
                         AppendClasses(*table, context.prefix, CompletionSource::kSystem, collected, true);
                 }
             }
+            else if (context.is_createobject_context)
+            {
+                if (editing_table)
+                    AppendCreateObjectClasses(*editing_table, context.prefix, CompletionSource::kEditing, collected, context.createobject_has_open_quote, context.createobject_quote);
+                for (const auto* table : workspace_tables)
+                    AppendCreateObjectClasses(*table, context.prefix, CompletionSource::kWorkspace, collected, context.createobject_has_open_quote, context.createobject_quote);
+                for (const auto* table : system_tables)
+                    AppendCreateObjectClasses(*table, context.prefix, CompletionSource::kSystem, collected, context.createobject_has_open_quote, context.createobject_quote);
+            }
             else if (context.is_unit_context)
             {
                 if (!visible_units_set.empty())
@@ -830,6 +1221,33 @@ namespace lsp::provider::text_document
                     AppendFunctions(*table, context.prefix, CompletionSource::kSystem, collected);
             }
 
+            for (auto& entry : collected)
+            {
+                if (!entry.item.data)
+                {
+                    continue;
+                }
+
+                if (!entry.item.data->Is<protocol::LSPObject>())
+                {
+                    continue;
+                }
+
+                auto& obj = entry.item.data->Get<protocol::LSPObject>();
+                auto ctx_it = obj.find("ctx");
+                if (ctx_it == obj.end())
+                {
+                    continue;
+                }
+
+                if (!ctx_it->second.Is<protocol::string>())
+                {
+                    continue;
+                }
+
+                obj["uri"] = params.textDocument.uri;
+            }
+
             auto filtered = FilterAndSort(collected, context.prefix);
             list.items.reserve(filtered.size());
             for (auto& item : filtered)