diff options
Diffstat (limited to 'lldb/source/Expression/UserExpression.cpp')
| -rw-r--r-- | lldb/source/Expression/UserExpression.cpp | 124 |
1 files changed, 63 insertions, 61 deletions
diff --git a/lldb/source/Expression/UserExpression.cpp b/lldb/source/Expression/UserExpression.cpp index 3b507da8e4ab4..47d13f052bfb1 100644 --- a/lldb/source/Expression/UserExpression.cpp +++ b/lldb/source/Expression/UserExpression.cpp @@ -1,4 +1,4 @@ -//===-- UserExpression.cpp ---------------------------------*- C++ -*-===// +//===-- UserExpression.cpp ------------------------------------------------===// // // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. // See https://llvm.org/LICENSE.txt for license information. @@ -53,8 +53,9 @@ UserExpression::UserExpression(ExecutionContextScope &exe_scope, lldb::LanguageType language, ResultType desired_type, const EvaluateExpressionOptions &options) - : Expression(exe_scope), m_expr_text(expr), m_expr_prefix(prefix), - m_language(language), m_desired_type(desired_type), m_options(options) {} + : Expression(exe_scope), m_expr_text(std::string(expr)), + m_expr_prefix(std::string(prefix)), m_language(language), + m_desired_type(desired_type), m_options(options) {} UserExpression::~UserExpression() {} @@ -116,7 +117,7 @@ lldb::addr_t UserExpression::GetObjectPointer(lldb::StackFrameSP frame_sp, lldb::ValueObjectSP valobj_sp; valobj_sp = frame_sp->GetValueForVariableExpressionPath( - object_name.AsCString(), lldb::eNoDynamicValues, + object_name.GetStringRef(), lldb::eNoDynamicValues, StackFrame::eExpressionPathOptionCheckPtrVsMember | StackFrame::eExpressionPathOptionsNoFragileObjcIvar | StackFrame::eExpressionPathOptionsNoSyntheticChildren | @@ -138,12 +139,12 @@ lldb::addr_t UserExpression::GetObjectPointer(lldb::StackFrameSP frame_sp, return ret; } -lldb::ExpressionResults UserExpression::Evaluate( - ExecutionContext &exe_ctx, const EvaluateExpressionOptions &options, - llvm::StringRef expr, llvm::StringRef prefix, - lldb::ValueObjectSP &result_valobj_sp, Status &error, - std::string *fixed_expression, lldb::ModuleSP *jit_module_sp_ptr, - ValueObject *ctx_obj) { +lldb::ExpressionResults +UserExpression::Evaluate(ExecutionContext &exe_ctx, + const EvaluateExpressionOptions &options, + llvm::StringRef expr, llvm::StringRef prefix, + lldb::ValueObjectSP &result_valobj_sp, Status &error, + std::string *fixed_expression, ValueObject *ctx_obj) { Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_EXPRESSIONS | LIBLLDB_LOG_STEP)); @@ -167,8 +168,8 @@ lldb::ExpressionResults UserExpression::Evaluate( Target *target = exe_ctx.GetTargetPtr(); if (!target) { - LLDB_LOGF(log, "== [UserExpression::Evaluate] Passed a NULL target, can't " - "run expressions."); + LLDB_LOG(log, "== [UserExpression::Evaluate] Passed a NULL target, can't " + "run expressions."); error.SetErrorString("expression passed a null target"); return lldb::eExpressionSetupError; } @@ -177,9 +178,8 @@ lldb::ExpressionResults UserExpression::Evaluate( if (process == nullptr || process->GetState() != lldb::eStateStopped) { if (execution_policy == eExecutionPolicyAlways) { - LLDB_LOGF(log, - "== [UserExpression::Evaluate] Expression may not run, but " - "is not constant =="); + LLDB_LOG(log, "== [UserExpression::Evaluate] Expression may not run, but " + "is not constant =="); error.SetErrorString("expression needed to run but couldn't"); @@ -201,8 +201,8 @@ lldb::ExpressionResults UserExpression::Evaluate( llvm::StringRef option_prefix(options.GetPrefix()); std::string full_prefix_storage; if (!prefix.empty() && !option_prefix.empty()) { - full_prefix_storage = prefix; - full_prefix_storage.append(option_prefix); + full_prefix_storage = std::string(prefix); + full_prefix_storage.append(std::string(option_prefix)); full_prefix = full_prefix_storage; } else if (!prefix.empty()) full_prefix = prefix; @@ -224,15 +224,13 @@ lldb::ExpressionResults UserExpression::Evaluate( desired_type, options, ctx_obj, error)); if (error.Fail()) { - if (log) - LLDB_LOGF(log, "== [UserExpression::Evaluate] Getting expression: %s ==", - error.AsCString()); + LLDB_LOG(log, "== [UserExpression::Evaluate] Getting expression: {0} ==", + error.AsCString()); return lldb::eExpressionSetupError; } - if (log) - LLDB_LOGF(log, "== [UserExpression::Evaluate] Parsing expression %s ==", - expr.str().c_str()); + LLDB_LOG(log, "== [UserExpression::Evaluate] Parsing expression {0} ==", + expr.str()); const bool keep_expression_in_memory = true; const bool generate_debug_info = options.GetGenerateDebugInfo(); @@ -261,25 +259,40 @@ lldb::ExpressionResults UserExpression::Evaluate( // If there is a fixed expression, try to parse it: if (!parse_success) { + // Delete the expression that failed to parse before attempting to parse + // the next expression. + user_expression_sp.reset(); + execution_results = lldb::eExpressionParseError; if (fixed_expression && !fixed_expression->empty() && options.GetAutoApplyFixIts()) { - lldb::UserExpressionSP fixed_expression_sp( - target->GetUserExpressionForLanguage(fixed_expression->c_str(), - full_prefix, language, - desired_type, options, ctx_obj, - error)); - DiagnosticManager fixed_diagnostic_manager; - parse_success = fixed_expression_sp->Parse( - fixed_diagnostic_manager, exe_ctx, execution_policy, - keep_expression_in_memory, generate_debug_info); - if (parse_success) { - diagnostic_manager.Clear(); - user_expression_sp = fixed_expression_sp; - } else { - // If the fixed expression failed to parse, don't tell the user about, - // that won't help. - fixed_expression->clear(); + const uint64_t max_fix_retries = options.GetRetriesWithFixIts(); + for (uint64_t i = 0; i < max_fix_retries; ++i) { + // Try parsing the fixed expression. + lldb::UserExpressionSP fixed_expression_sp( + target->GetUserExpressionForLanguage( + fixed_expression->c_str(), full_prefix, language, desired_type, + options, ctx_obj, error)); + DiagnosticManager fixed_diagnostic_manager; + parse_success = fixed_expression_sp->Parse( + fixed_diagnostic_manager, exe_ctx, execution_policy, + keep_expression_in_memory, generate_debug_info); + if (parse_success) { + diagnostic_manager.Clear(); + user_expression_sp = fixed_expression_sp; + break; + } else { + // The fixed expression also didn't parse. Let's check for any new + // Fix-Its we could try. + if (fixed_expression_sp->GetFixedText()) { + *fixed_expression = fixed_expression_sp->GetFixedText(); + } else { + // Fixed expression didn't compile without a fixit, don't retry and + // don't tell the user about it. + fixed_expression->clear(); + break; + } + } } } @@ -301,19 +314,12 @@ lldb::ExpressionResults UserExpression::Evaluate( } if (parse_success) { - // If a pointer to a lldb::ModuleSP was passed in, return the JIT'ed module - // if one was created - if (jit_module_sp_ptr) - *jit_module_sp_ptr = user_expression_sp->GetJITModule(); - lldb::ExpressionVariableSP expr_result; if (execution_policy == eExecutionPolicyNever && !user_expression_sp->CanInterpret()) { - if (log) - LLDB_LOGF(log, - "== [UserExpression::Evaluate] Expression may not run, but " - "is not constant =="); + LLDB_LOG(log, "== [UserExpression::Evaluate] Expression may not run, but " + "is not constant =="); if (!diagnostic_manager.Diagnostics().size()) error.SetExpressionError(lldb::eExpressionSetupError, @@ -333,17 +339,15 @@ lldb::ExpressionResults UserExpression::Evaluate( diagnostic_manager.Clear(); - if (log) - LLDB_LOGF(log, "== [UserExpression::Evaluate] Executing expression =="); + LLDB_LOG(log, "== [UserExpression::Evaluate] Executing expression =="); execution_results = user_expression_sp->Execute(diagnostic_manager, exe_ctx, options, user_expression_sp, expr_result); if (execution_results != lldb::eExpressionCompleted) { - if (log) - LLDB_LOGF(log, "== [UserExpression::Evaluate] Execution completed " - "abnormally =="); + LLDB_LOG(log, "== [UserExpression::Evaluate] Execution completed " + "abnormally =="); if (!diagnostic_manager.Diagnostics().size()) error.SetExpressionError( @@ -355,15 +359,13 @@ lldb::ExpressionResults UserExpression::Evaluate( if (expr_result) { result_valobj_sp = expr_result->GetValueObject(); - if (log) - LLDB_LOGF(log, - "== [UserExpression::Evaluate] Execution completed " - "normally with result %s ==", - result_valobj_sp->GetValueAsCString()); + LLDB_LOG(log, + "== [UserExpression::Evaluate] Execution completed " + "normally with result %s ==", + result_valobj_sp->GetValueAsCString()); } else { - if (log) - LLDB_LOGF(log, "== [UserExpression::Evaluate] Execution completed " - "normally with no result =="); + LLDB_LOG(log, "== [UserExpression::Evaluate] Execution completed " + "normally with no result =="); error.SetError(UserExpression::kNoResult, lldb::eErrorTypeGeneric); } |