911e94c651
Completes the work started in #128262. This PR removes the old way of register request handlers with callbacks and makes the operator const.
107 lines
4.1 KiB
C++
107 lines
4.1 KiB
C++
//===-- ScopesRequestHandler.cpp ------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "DAP.h"
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#include "EventHelper.h"
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#include "JSONUtils.h"
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#include "RequestHandler.h"
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namespace lldb_dap {
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// "ScopesRequest": {
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// "allOf": [ { "$ref": "#/definitions/Request" }, {
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// "type": "object",
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// "description": "Scopes request; value of command field is 'scopes'. The
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// request returns the variable scopes for a given stackframe ID.",
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// "properties": {
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// "command": {
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// "type": "string",
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// "enum": [ "scopes" ]
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// },
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// "arguments": {
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// "$ref": "#/definitions/ScopesArguments"
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// }
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// },
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// "required": [ "command", "arguments" ]
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// }]
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// },
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// "ScopesArguments": {
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// "type": "object",
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// "description": "Arguments for 'scopes' request.",
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// "properties": {
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// "frameId": {
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// "type": "integer",
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// "description": "Retrieve the scopes for this stackframe."
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// }
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// },
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// "required": [ "frameId" ]
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// },
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// "ScopesResponse": {
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// "allOf": [ { "$ref": "#/definitions/Response" }, {
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// "type": "object",
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// "description": "Response to 'scopes' request.",
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// "properties": {
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// "body": {
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// "type": "object",
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// "properties": {
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// "scopes": {
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// "type": "array",
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// "items": {
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// "$ref": "#/definitions/Scope"
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// },
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// "description": "The scopes of the stackframe. If the array has
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// length zero, there are no scopes available."
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// }
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// },
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// "required": [ "scopes" ]
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// }
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// },
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// "required": [ "body" ]
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// }]
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// }
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void ScopesRequestHandler::operator()(const llvm::json::Object &request) const {
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llvm::json::Object response;
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FillResponse(request, response);
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llvm::json::Object body;
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const auto *arguments = request.getObject("arguments");
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lldb::SBFrame frame = dap.GetLLDBFrame(*arguments);
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// As the user selects different stack frames in the GUI, a "scopes" request
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// will be sent to the DAP. This is the only way we know that the user has
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// selected a frame in a thread. There are no other notifications that are
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// sent and VS code doesn't allow multiple frames to show variables
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// concurrently. If we select the thread and frame as the "scopes" requests
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// are sent, this allows users to type commands in the debugger console
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// with a backtick character to run lldb commands and these lldb commands
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// will now have the right context selected as they are run. If the user
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// types "`bt" into the debugger console and we had another thread selected
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// in the LLDB library, we would show the wrong thing to the user. If the
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// users switches threads with a lldb command like "`thread select 14", the
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// GUI will not update as there are no "event" notification packets that
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// allow us to change the currently selected thread or frame in the GUI that
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// I am aware of.
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if (frame.IsValid()) {
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frame.GetThread().GetProcess().SetSelectedThread(frame.GetThread());
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frame.GetThread().SetSelectedFrame(frame.GetFrameID());
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}
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dap.variables.locals = frame.GetVariables(/*arguments=*/true,
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/*locals=*/true,
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/*statics=*/false,
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/*in_scope_only=*/true);
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dap.variables.globals = frame.GetVariables(/*arguments=*/false,
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/*locals=*/false,
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/*statics=*/true,
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/*in_scope_only=*/true);
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dap.variables.registers = frame.GetRegisters();
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body.try_emplace("scopes", dap.CreateTopLevelScopes());
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response.try_emplace("body", std::move(body));
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dap.SendJSON(llvm::json::Value(std::move(response)));
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}
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} // namespace lldb_dap
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