refactor register_cpp_function

TODO.md

@@ -39,4 +39,5 @@
 * 返回类型为void时的return语句优化
 * [done] 支持析构函数
 * 支持内置函数assert
-* 支持 enum to string
+* 支持 enum to string
+* 内置函数放置在wamon包名称中

example/register_cpp_function.cc

@@ -33,7 +33,7 @@ int main() {
     package main;
 
     func call_cpp_function(string s) -> int {
-      return call my_cpp_func:(s);
+      return call main::my_cpp_func:(s);
     }
 
     let test : f(() -> int) = my_type_cpp_func;
@@ -42,10 +42,10 @@ int main() {
   wamon::Scanner scanner;
   auto tokens = scanner.Scan(script);
   wamon::PackageUnit package_unit = wamon::Parse(tokens);
-  package_unit = wamon::MergePackageUnits(std::move(package_unit));
   package_unit.RegisterCppFunctions("my_cpp_func", my_cpp_func_check, my_cpp_func);
   package_unit.RegisterCppFunctions("my_type_cpp_func", wamon::TypeFactory<int()>::Get(), my_type_cpp_func);
 
+  package_unit = wamon::MergePackageUnits(std::move(package_unit));
   wamon::TypeChecker type_checker(package_unit);
 
   std::string reason;

include/wamon/builtin_functions.h

@@ -25,6 +25,8 @@ class BuiltinFunctions {
 
   BuiltinFunctions();
 
+  static void RegisterWamonBuiltinFunction(BuiltinFunctions&);
+
   BuiltinFunctions(BuiltinFunctions&&) = default;
 
   BuiltinFunctions& operator=(BuiltinFunctions&&) = default;
@@ -67,6 +69,27 @@ class BuiltinFunctions {
     builtin_types_[name] = std::move(type);
   }
 
+  void Merge(BuiltinFunctions&& other) {
+    for (auto& each : other.builtin_handles_) {
+      if (builtin_handles_.count(each.first) > 0) {
+        throw WamonException("BuiltinFunctions.Merge error, duplicate handle {}", each.first);
+      }
+      builtin_handles_[each.first] = std::move(each.second);
+    }
+    for (auto& each : other.builtin_checks_) {
+      if (builtin_checks_.count(each.first) > 0) {
+        throw WamonException("BuiltinFunctions.Merge error, duplicate check {}", each.first);
+      }
+      builtin_checks_[each.first] = std::move(each.second);
+    }
+    for (auto& each : other.builtin_types_) {
+      if (builtin_types_.count(each.first) > 0) {
+        throw WamonException("BuiltinFunctions.Merge error, duplicate typed name {}", each.first);
+      }
+      builtin_types_[each.first] = std::move(each.second);
+    }
+  }
+
  private:
   std::unordered_map<std::string, HandleType> builtin_handles_;
   std::unordered_map<std::string, CheckType> builtin_checks_;

include/wamon/package_unit.h

@@ -14,6 +14,7 @@
 #include "wamon/function_def.h"
 #include "wamon/method_def.h"
 #include "wamon/operator_def.h"
+#include "wamon/prepared_package_name.h"
 #include "wamon/struct_def.h"
 #include "wamon/type.h"
 
@@ -24,6 +25,7 @@ class PackageUnit {
   static PackageUnit _MergePackageUnits(std::vector<PackageUnit>&& packages);
 
   std::string CreateUniqueLambdaName() {
+    MergedFlagCheck("CreateUniqueLambdaName");
     auto ret = "__lambda_" + std::to_string(lambda_count_) + GetName();
     lambda_count_ += 1;
     return ret;
@@ -34,9 +36,16 @@ class PackageUnit {
   PackageUnit(PackageUnit&&) = default;
   PackageUnit& operator=(PackageUnit&&) = default;
 
-  void SetName(const std::string& name) { package_name_ = name; }
+  void SetName(const std::string& name) {
+    MergedFlagCheck("SetName");
+    if (IsPreparedPakageName(name)) {
+      throw WamonException("PackageUnit.SetName invalid , {}", name);
+    }
+    package_name_ = name;
+  }
 
   void SetImportPackage(const std::vector<std::string>& import_packages) {
+    MergedFlagCheck("SetImportPackage");
     import_packages_ = import_packages;
     package_imports_[package_name_] = import_packages;
   }
@@ -46,6 +55,7 @@ class PackageUnit {
   const std::vector<std::string>& GetImportPackage() const { return import_packages_; }
 
   void AddVarDef(std::unique_ptr<VariableDefineStmt>&& vd) {
+    MergedFlagCheck("AddVarDef");
     if (std::find_if(var_define_.begin(), var_define_.end(), [&vd](const auto& v) -> bool {
           return vd->GetVarName() == v->GetVarName();
         }) != var_define_.end()) {
@@ -55,6 +65,7 @@ class PackageUnit {
   }
 
   void AddFuncDef(std::unique_ptr<FunctionDef>&& func_def) {
+    MergedFlagCheck("AddFuncDef");
     auto name = func_def->GetFunctionName();
     if (funcs_.find(name) != funcs_.end()) {
       throw WamonException("duplicate func {}", name);
@@ -63,6 +74,7 @@ class PackageUnit {
   }
 
   void AddStructDef(std::unique_ptr<StructDef>&& struct_def) {
+    MergedFlagCheck("AddStructDef");
     auto name = struct_def->GetStructName();
     if (structs_.find(name) != structs_.end()) {
       throw WamonException("duplicate struct {}", name);
@@ -71,6 +83,7 @@ class PackageUnit {
   }
 
   void AddEnumDef(std::unique_ptr<EnumDef>&& enum_def) {
+    MergedFlagCheck("AddEnumDef");
     auto name = enum_def->GetEnumName();
     if (enum_def->GetEnumItems().empty()) {
       throw WamonException("AddEnumDef error, empty enum {}", name);
@@ -82,6 +95,7 @@ class PackageUnit {
   }
 
   void AddMethod(const std::string& type_name, std::unique_ptr<methods_def>&& methods) {
+    MergedFlagCheck("AddMethod");
     assert(type_name.empty() == false);
     if (structs_.find(type_name) == structs_.end()) {
       throw WamonException("add method error, invalid type : {}", type_name);
@@ -90,6 +104,7 @@ class PackageUnit {
   }
 
   void AddLambdaFunction(const std::string& lambda_name, std::unique_ptr<FunctionDef>&& lambda) {
+    MergedFlagCheck("AddLambdaFunction");
     assert(LambdaExpr::IsLambdaName(lambda_name));
     if (funcs_.find(lambda_name) != funcs_.end()) {
       throw WamonException("PackageUnit.AddLambdaFunction error, duplicate function name {}", lambda_name);
@@ -152,6 +167,7 @@ class PackageUnit {
   BuiltinFunctions& GetBuiltinFunctions() { return builtin_functions_; }
 
   void AddPackageImports(const std::string& package, const std::vector<std::string>& imports) {
+    MergedFlagCheck("AddPackageImports");
     if (package_imports_.count(package) > 0) {
       auto& tmp = package_imports_[package];
       for (auto& each : imports) {
@@ -171,7 +187,8 @@ class PackageUnit {
   }
 
   void RegisterCppFunctions(const std::string& name, BuiltinFunctions::CheckType ct, BuiltinFunctions::HandleType ht) {
-    GetBuiltinFunctions().Register(name, std::move(ct), std::move(ht));
+    MergedFlagCheck("RegisterCppFunctions");
+    GetBuiltinFunctions().Register(GetName() + "$" + name, std::move(ct), std::move(ht));
   }
 
   void RegisterCppFunctions(const std::string& name, std::unique_ptr<Type> func_type, BuiltinFunctions::HandleType ht);
@@ -185,6 +202,15 @@ class PackageUnit {
   void SetCurrentParsingPackage(const std::string& cpp) { current_parsing_package_ = cpp; }
 
  private:
+  // PackageUnit有两种类型，只有Merge得到的PackageUnit才能够进行类型分析以及交付给解释器执行。
+  bool merged = false;
+
+  void MergedFlagCheck(const std::string& info) {
+    if (merged == true) {
+      throw WamonException("MergedFlagCheck error, from {}", info);
+    }
+  }
+
   std::string package_name_;
   std::vector<std::string> import_packages_;
   // 包作用域的变量定义语句

include/wamon/prepared_package_name.h

@@ -0,0 +1,9 @@
+#pragma once
+
+#include <string>
+
+namespace wamon {
+
+bool IsPreparedPakageName(const std::string& package_name);
+
+}

include/wamon/static_analyzer.h

@@ -70,7 +70,7 @@ class StaticAnalyzer {
       return fd->GetType();
     }
     // 只有设定类型的注册函数能够被找到
-    auto ftype = GetPackageUnit().GetBuiltinFunctions().GetType(GetIdFromIdent(name));
+    auto ftype = GetPackageUnit().GetBuiltinFunctions().GetType(name);
     if (ftype != nullptr) {
       type = IdExpr::Type::BuiltinFunc;
       return ftype;

src/ast.cc

@@ -3,7 +3,6 @@
 #include "wamon/exception.h"
 #include "wamon/inner_type_method.h"
 #include "wamon/interpreter.h"
-#include "wamon/ptr_cast.h"
 
 namespace wamon {
 
@@ -22,7 +21,7 @@ std::shared_ptr<Variable> FuncCallExpr::Calculate(Interpreter& interpreter) {
   if (type == FuncCallType::FUNC) {
     func_name = dynamic_cast<IdExpr*>(caller_.get())->GenerateIdent();
   } else if (type == FuncCallType::BUILT_IN_FUNC) {
-    func_name = dynamic_cast<IdExpr*>(caller_.get())->GetId();
+    func_name = dynamic_cast<IdExpr*>(caller_.get())->GenerateIdent();
   }
   if (type == FuncCallType::FUNC) {
     auto funcdef = interpreter.GetPackageUnit().FindFunction(func_name);
@@ -106,11 +105,11 @@ std::shared_ptr<Variable> IdExpr::Calculate(Interpreter& interpreter) {
   if (type_ == Type::Variable || type_ == Type::Callable) {
     return interpreter.FindVariableById(GenerateIdent());
   } else if (type_ == Type::BuiltinFunc) {
-    auto type = interpreter.GetPackageUnit().GetBuiltinFunctions().GetType(GetId());
+    auto type = interpreter.GetPackageUnit().GetBuiltinFunctions().GetType(GenerateIdent());
     assert(type != nullptr);
     auto ret = std::make_shared<FunctionVariable>(GetParamType(type), GetReturnType(type),
                                                   Variable::ValueCategory::RValue, "");
-    ret->SetFuncName(GetId());
+    ret->SetFuncName(GenerateIdent());
     return ret;
   } else {
     auto func_def = interpreter.GetPackageUnit().FindFunction(GenerateIdent());

src/builtin_functions.cc

@@ -54,10 +54,11 @@ static auto _to_string(Interpreter& ip, std::vector<std::shared_ptr<Variable>>&&
   return std::make_shared<StringVariable>(result, wamon::Variable::ValueCategory::RValue, "");
 }
 
-static void register_builtin_handles(std::unordered_map<std::string, BuiltinFunctions::HandleType>& handles) {
-  handles["print"] = _print;
-  handles["to_string"] = _to_string;
-  handles["context_stack"] = _context_stack;
+static void register_builtin_handles(const std::string& prefix,
+                                     std::unordered_map<std::string, BuiltinFunctions::HandleType>& handles) {
+  handles[prefix + "print"] = _print;
+  handles[prefix + "to_string"] = _to_string;
+  handles[prefix + "context_stack"] = _context_stack;
 }
 
 static auto _print_check(const std::vector<std::unique_ptr<Type>>& params_type) -> std::unique_ptr<Type> {
@@ -82,15 +83,18 @@ static auto _to_string_check(const std::vector<std::unique_ptr<Type>>& params_ty
   throw WamonException("to_string type_check error, type {} cant not be to_string", type->GetTypeInfo());
 }
 
-static void register_builtin_checks(std::unordered_map<std::string, BuiltinFunctions::CheckType>& checks) {
-  checks["print"] = _print_check;
-  checks["to_string"] = _to_string_check;
-  checks["context_stack"] = _context_stack_check;
+static void register_builtin_checks(const std::string& prefix,
+                                    std::unordered_map<std::string, BuiltinFunctions::CheckType>& checks) {
+  checks[prefix + "print"] = _print_check;
+  checks[prefix + "to_string"] = _to_string_check;
+  checks[prefix + "context_stack"] = _context_stack_check;
 }
 
-BuiltinFunctions::BuiltinFunctions() {
-  register_builtin_checks(builtin_checks_);
-  register_builtin_handles(builtin_handles_);
+BuiltinFunctions::BuiltinFunctions() {}
+
+void BuiltinFunctions::RegisterWamonBuiltinFunction(BuiltinFunctions& obj) {
+  register_builtin_checks("wamon$", obj.builtin_checks_);
+  register_builtin_handles("wamon$", obj.builtin_handles_);
 }
 
 std::unique_ptr<Type> BuiltinFunctions::TypeCheck(const std::string& name,

src/interpreter.cc

@@ -5,7 +5,6 @@
 #include "wamon/operator.h"
 #include "wamon/parser.h"
 #include "wamon/parsing_package.h"
-#include "wamon/ptr_cast.h"
 #include "wamon/scanner.h"
 #include "wamon/type.h"
 #include "wamon/type_checker.h"

src/package_unit.cc

@@ -37,13 +37,18 @@ PackageUnit PackageUnit::_MergePackageUnits(std::vector<PackageUnit>&& packages)
       struct_define->second->SetStructName(it->GetName() + "$" + struct_name);
       result.AddStructDef(std::move(struct_define->second));
     }
+
+    result.builtin_functions_.Merge(std::move(it->builtin_functions_));
   }
+  BuiltinFunctions::RegisterWamonBuiltinFunction(result.builtin_functions_);
   // 不需要更新 lambda_count_，因为merge之后的PackageUnit不会再进行解析了。
+  result.merged = true;
   return result;
 }
 
 void PackageUnit::RegisterCppFunctions(const std::string& name, std::unique_ptr<Type> func_type,
                                        BuiltinFunctions::HandleType ht) {
+  MergedFlagCheck("RegisterCppFunctions");
   if (IsFuncType(func_type) == false) {
     throw WamonException("RegisterCppFunctions error, {} have non-function type : {}", name, func_type->GetTypeInfo());
   }
@@ -67,7 +72,7 @@ void PackageUnit::RegisterCppFunctions(const std::string& name, std::unique_ptr<
     return GetReturnType(func_type);
   };
   RegisterCppFunctions(name, std::move(check_f), std::move(ht));
-  GetBuiltinFunctions().SetTypeForFunction(name, std::move(func_type));
+  GetBuiltinFunctions().SetTypeForFunction(GetName() + "$" + name, std::move(func_type));
 }
 
 }  // namespace wamon

src/parsing_package.cc

@@ -1,14 +1,20 @@
 #include "wamon/parsing_package.h"
 
+#include <algorithm>
+
 #include "wamon/exception.h"
 #include "wamon/package_unit.h"
+#include "wamon/prepared_package_name.h"
 
 namespace wamon {
 
 void AssertInImportListOrThrow(PackageUnit& pu, const std::string& package_name) {
   if (package_name == pu.GetCurrentParsingPackage()) {
     return;
   }
+  if (IsPreparedPakageName(package_name)) {
+    return;
+  }
   for (auto& each : pu.GetCurrentParsingImports()) {
     if (package_name == each) {
       return;

src/prepared_package_name.cc

@@ -0,0 +1,27 @@
+#include "wamon/prepared_package_name.h"
+
+namespace wamon {
+
+namespace detail {
+
+template <typename T, size_t N>
+constexpr size_t GetArrayLength(T (&)[N]) {
+  return N;
+}
+
+}  // namespace detail
+
+bool IsPreparedPakageName(const std::string& package_name) {
+  static std::string prepared_package_name[] = {
+      "wamon",
+  };
+
+  for (size_t i = 0; i < detail::GetArrayLength(prepared_package_name); ++i) {
+    if (package_name == prepared_package_name[i]) {
+      return true;
+    }
+  }
+  return false;
+}
+
+}  // namespace wamon