1 //===-- ClangREPL.cpp -----------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "ClangREPL.h" 10 #include "lldb/Core/Debugger.h" 11 #include "lldb/Core/PluginManager.h" 12 #include "lldb/Expression/ExpressionVariable.h" 13 14 using namespace lldb_private; 15 16 LLDB_PLUGIN_DEFINE(ClangREPL) 17 18 ClangREPL::ClangREPL(lldb::LanguageType language, Target &target) 19 : REPL(eKindClang, target), m_language(language), 20 m_implicit_expr_result_regex("\\$[0-9]+") {} 21 22 ClangREPL::~ClangREPL() = default; 23 24 void ClangREPL::Initialize() { 25 LanguageSet languages; 26 // FIXME: There isn't a way to ask CPlusPlusLanguage and ObjCLanguage for 27 // a list of languages they support. 28 languages.Insert(lldb::LanguageType::eLanguageTypeC); 29 languages.Insert(lldb::LanguageType::eLanguageTypeC89); 30 languages.Insert(lldb::LanguageType::eLanguageTypeC99); 31 languages.Insert(lldb::LanguageType::eLanguageTypeC11); 32 languages.Insert(lldb::LanguageType::eLanguageTypeC_plus_plus); 33 languages.Insert(lldb::LanguageType::eLanguageTypeC_plus_plus_03); 34 languages.Insert(lldb::LanguageType::eLanguageTypeC_plus_plus_11); 35 languages.Insert(lldb::LanguageType::eLanguageTypeC_plus_plus_14); 36 languages.Insert(lldb::LanguageType::eLanguageTypeObjC); 37 languages.Insert(lldb::LanguageType::eLanguageTypeObjC_plus_plus); 38 PluginManager::RegisterPlugin(GetPluginNameStatic(), "C language REPL", 39 &CreateInstance, languages); 40 } 41 42 void ClangREPL::Terminate() { 43 PluginManager::UnregisterPlugin(&CreateInstance); 44 } 45 46 lldb::REPLSP ClangREPL::CreateInstance(Status &error, 47 lldb::LanguageType language, 48 Debugger *debugger, Target *target, 49 const char *repl_options) { 50 // Creating a dummy target if only a debugger is given isn't implemented yet. 51 if (!target) { 52 error.SetErrorString("must have a target to create a REPL"); 53 return nullptr; 54 } 55 lldb::REPLSP result = std::make_shared<ClangREPL>(language, *target); 56 target->SetREPL(language, result); 57 error = Status(); 58 return result; 59 } 60 61 Status ClangREPL::DoInitialization() { return Status(); } 62 63 ConstString ClangREPL::GetSourceFileBasename() { 64 return ConstString("repl.c"); 65 } 66 67 const char *ClangREPL::GetAutoIndentCharacters() { return " "; } 68 69 bool ClangREPL::SourceIsComplete(const std::string &source) { 70 // FIXME: There isn't a good way to know if the input source is complete or 71 // not, so just say that every single REPL line is ready to be parsed. 72 return !source.empty(); 73 } 74 75 lldb::offset_t ClangREPL::GetDesiredIndentation(const StringList &lines, 76 int cursor_position, 77 int tab_size) { 78 // FIXME: Not implemented. 79 return LLDB_INVALID_OFFSET; 80 } 81 82 lldb::LanguageType ClangREPL::GetLanguage() { return m_language; } 83 84 bool ClangREPL::PrintOneVariable(Debugger &debugger, 85 lldb::StreamFileSP &output_sp, 86 lldb::ValueObjectSP &valobj_sp, 87 ExpressionVariable *var) { 88 // If a ExpressionVariable was passed, check first if that variable is just 89 // an automatically created expression result. These variables are already 90 // printed by the REPL so this is done to prevent printing the variable twice. 91 if (var) { 92 if (m_implicit_expr_result_regex.Execute(var->GetName().GetStringRef())) 93 return true; 94 } 95 valobj_sp->Dump(*output_sp); 96 return true; 97 } 98 99 void ClangREPL::CompleteCode(const std::string ¤t_code, 100 CompletionRequest &request) { 101 // Not implemented. 102 } 103