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[/] [openrisc/] [tags/] [gnu-dev/] [fsf-gcc-snapshot-1-mar-12/] [or1k-gcc/] [gcc/] [go/] [gofrontend/] [unsafe.cc] - Rev 847
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// unsafe.cc -- Go frontend builtin unsafe package. // Copyright 2009 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. #include "go-system.h" #include "go-c.h" #include "types.h" #include "gogo.h" // Set up the builtin unsafe package. This should probably be driven // by a table. void Gogo::import_unsafe(const std::string& local_name, bool is_local_name_exported, Location location) { Location bloc = Linemap::predeclared_location(); bool add_to_globals; Package* package = this->add_imported_package("unsafe", local_name, is_local_name_exported, "libgo_unsafe", location, &add_to_globals); if (package == NULL) { go_assert(saw_errors()); return; } package->set_location(location); package->set_is_imported(); this->imports_.insert(std::make_pair("unsafe", package)); Bindings* bindings = package->bindings(); // The type may have already been created by an import. Named_object* no = package->bindings()->lookup("Pointer"); if (no == NULL) { Type* type = Type::make_pointer_type(Type::make_void_type()); no = bindings->add_type("Pointer", package, type, Linemap::unknown_location()); } else { go_assert(no->package() == package); go_assert(no->is_type()); go_assert(no->type_value()->is_unsafe_pointer_type()); no->type_value()->set_is_visible(); } Named_type* pointer_type = no->type_value(); if (add_to_globals) this->add_named_type(pointer_type); Type* int_type = this->lookup_global("int")->type_value(); // Sizeof. Typed_identifier_list* results = new Typed_identifier_list; results->push_back(Typed_identifier("", int_type, bloc)); Function_type* fntype = Type::make_function_type(NULL, NULL, results, bloc); fntype->set_is_builtin(); no = bindings->add_function_declaration("Sizeof", package, fntype, bloc); if (add_to_globals) this->add_named_object(no); // Offsetof. results = new Typed_identifier_list; results->push_back(Typed_identifier("", int_type, bloc)); fntype = Type::make_function_type(NULL, NULL, results, bloc); fntype->set_is_varargs(); fntype->set_is_builtin(); no = bindings->add_function_declaration("Offsetof", package, fntype, bloc); if (add_to_globals) this->add_named_object(no); // Alignof. results = new Typed_identifier_list; results->push_back(Typed_identifier("", int_type, bloc)); fntype = Type::make_function_type(NULL, NULL, results, bloc); fntype->set_is_varargs(); fntype->set_is_builtin(); no = bindings->add_function_declaration("Alignof", package, fntype, bloc); if (add_to_globals) this->add_named_object(no); // Typeof. Type* empty_interface = Type::make_empty_interface_type(bloc); Typed_identifier_list* parameters = new Typed_identifier_list; parameters->push_back(Typed_identifier("i", empty_interface, bloc)); results = new Typed_identifier_list; results->push_back(Typed_identifier("", empty_interface, bloc)); fntype = Type::make_function_type(NULL, parameters, results, bloc); no = bindings->add_function_declaration("Typeof", package, fntype, bloc); if (add_to_globals) this->add_named_object(no); // Reflect. parameters = new Typed_identifier_list; parameters->push_back(Typed_identifier("it", empty_interface, bloc)); results = new Typed_identifier_list; results->push_back(Typed_identifier("", empty_interface, bloc)); results->push_back(Typed_identifier("", pointer_type, bloc)); fntype = Type::make_function_type(NULL, parameters, results, bloc); no = bindings->add_function_declaration("Reflect", package, fntype, bloc); if (add_to_globals) this->add_named_object(no); // Unreflect. parameters = new Typed_identifier_list; parameters->push_back(Typed_identifier("typ", empty_interface, bloc)); parameters->push_back(Typed_identifier("addr", pointer_type, bloc)); results = new Typed_identifier_list; results->push_back(Typed_identifier("", empty_interface, bloc)); fntype = Type::make_function_type(NULL, parameters, results, bloc); no = bindings->add_function_declaration("Unreflect", package, fntype, bloc); if (add_to_globals) this->add_named_object(no); // New. parameters = new Typed_identifier_list; parameters->push_back(Typed_identifier("typ", empty_interface, bloc)); results = new Typed_identifier_list; results->push_back(Typed_identifier("", pointer_type, bloc)); fntype = Type::make_function_type(NULL, parameters, results, bloc); no = bindings->add_function_declaration("New", package, fntype, bloc); if (add_to_globals) this->add_named_object(no); // NewArray. parameters = new Typed_identifier_list; parameters->push_back(Typed_identifier("typ", empty_interface, bloc)); parameters->push_back(Typed_identifier("n", int_type, bloc)); results = new Typed_identifier_list; results->push_back(Typed_identifier("", pointer_type, bloc)); fntype = Type::make_function_type(NULL, parameters, results, bloc); no = bindings->add_function_declaration("NewArray", package, fntype, bloc); if (add_to_globals) this->add_named_object(no); if (!this->imported_unsafe_) { go_imported_unsafe(); this->imported_unsafe_ = true; } }
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