1 | //===-- SourceRequestHandler.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 "Handler/RequestHandler.h" |
11 | #include "LLDBUtils.h" |
12 | #include "Protocol/ProtocolRequests.h" |
13 | #include "Protocol/ProtocolTypes.h" |
14 | #include "lldb/API/SBAddress.h" |
15 | #include "lldb/API/SBExecutionContext.h" |
16 | #include "lldb/API/SBFrame.h" |
17 | #include "lldb/API/SBInstructionList.h" |
18 | #include "lldb/API/SBProcess.h" |
19 | #include "lldb/API/SBStream.h" |
20 | #include "lldb/API/SBSymbol.h" |
21 | #include "lldb/API/SBTarget.h" |
22 | #include "lldb/API/SBThread.h" |
23 | #include "lldb/lldb-types.h" |
24 | #include "llvm/Support/Error.h" |
25 | |
26 | namespace lldb_dap { |
27 | |
28 | /// Source request; value of command field is 'source'. The request retrieves |
29 | /// the source code for a given source reference. |
30 | llvm::Expected<protocol::SourceResponseBody> |
31 | SourceRequestHandler::Run(const protocol::SourceArguments &args) const { |
32 | const auto source = |
33 | args.source->sourceReference.value_or(u: args.sourceReference); |
34 | |
35 | if (!source) |
36 | return llvm::make_error<DAPError>( |
37 | Args: "invalid arguments, expected source.sourceReference to be set"); |
38 | |
39 | lldb::SBAddress address(source, dap.target); |
40 | if (!address.IsValid()) |
41 | return llvm::make_error<DAPError>(Args: "source not found"); |
42 | |
43 | lldb::SBSymbol symbol = address.GetSymbol(); |
44 | |
45 | lldb::SBStream stream; |
46 | lldb::SBExecutionContext exe_ctx(dap.target); |
47 | |
48 | if (symbol.IsValid()) { |
49 | lldb::SBInstructionList insts = symbol.GetInstructions(target: dap.target); |
50 | insts.GetDescription(description&: stream, exe_ctx); |
51 | } else { |
52 | // No valid symbol, just return the disassembly. |
53 | lldb::SBInstructionList insts = dap.target.ReadInstructions( |
54 | base_addr: address, count: dap.k_number_of_assembly_lines_for_nodebug); |
55 | insts.GetDescription(description&: stream, exe_ctx); |
56 | } |
57 | |
58 | return protocol::SourceResponseBody{/*content=*/stream.GetData(), |
59 | /*mimeType=*/"text/x-lldb.disassembly"}; |
60 | } |
61 | |
62 | } // namespace lldb_dap |
63 |