| 1 | //===-- StepInRequestHandler.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 "DAP.h" |
| 10 | #include "EventHelper.h" |
| 11 | #include "LLDBUtils.h" |
| 12 | #include "Protocol/ProtocolRequests.h" |
| 13 | #include "Protocol/ProtocolTypes.h" |
| 14 | #include "RequestHandler.h" |
| 15 | |
| 16 | using namespace llvm; |
| 17 | using namespace lldb; |
| 18 | using namespace lldb_dap::protocol; |
| 19 | |
| 20 | namespace lldb_dap { |
| 21 | |
| 22 | // The request resumes the given thread to step into a function/method and |
| 23 | // allows all other threads to run freely by resuming them. If the debug adapter |
| 24 | // supports single thread execution (see capability |
| 25 | // `supportsSingleThreadExecutionRequests`), setting the `singleThread` argument |
| 26 | // to true prevents other suspended threads from resuming. If the request cannot |
| 27 | // step into a target, `stepIn` behaves like the `next` request. The debug |
| 28 | // adapter first sends the response and then a `stopped` event (with reason |
| 29 | // `step`) after the step has completed. If there are multiple function/method |
| 30 | // calls (or other targets) on the source line, the argument `targetId` can be |
| 31 | // used to control into which target the `stepIn` should occur. The list of |
| 32 | // possible targets for a given source line can be retrieved via the |
| 33 | // `stepInTargets` request. |
| 34 | Error StepInRequestHandler::Run(const StepInArguments &args) const { |
| 35 | SBThread thread = dap.GetLLDBThread(id: args.threadId); |
| 36 | if (!thread.IsValid()) |
| 37 | return make_error<DAPError>(Args: "invalid thread"); |
| 38 | |
| 39 | // Remember the thread ID that caused the resume so we can set the |
| 40 | // "threadCausedFocus" boolean value in the "stopped" events. |
| 41 | dap.focus_tid = thread.GetThreadID(); |
| 42 | |
| 43 | if (!SBDebugger::StateIsStoppedState(state: dap.target.GetProcess().GetState())) |
| 44 | return make_error<NotStoppedError>(); |
| 45 | |
| 46 | lldb::SBError error; |
| 47 | if (args.granularity == eSteppingGranularityInstruction) { |
| 48 | thread.StepInstruction(/*step_over=*/false, error); |
| 49 | return ToError(error); |
| 50 | } |
| 51 | |
| 52 | std::string step_in_target; |
| 53 | auto it = dap.step_in_targets.find(Val: args.targetId.value_or(u: 0)); |
| 54 | if (it != dap.step_in_targets.end()) |
| 55 | step_in_target = it->second; |
| 56 | |
| 57 | RunMode run_mode = args.singleThread ? eOnlyThisThread : eOnlyDuringStepping; |
| 58 | thread.StepInto(target_name: step_in_target.c_str(), LLDB_INVALID_LINE_NUMBER, error, |
| 59 | stop_other_threads: run_mode); |
| 60 | return ToError(error); |
| 61 | } |
| 62 | |
| 63 | } // namespace lldb_dap |
| 64 |