lldb/tools/lldb-dap/Handler/SetExceptionBreakpointsRequestHandler.cpp

//===-- SetExceptionBreakpointsRequestHandler.cpp -------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#include "DAP.h"
#include "EventHelper.h"
#include "JSONUtils.h"
#include "RequestHandler.h"
#include <set>

namespace lldb_dap {

// "SetExceptionBreakpointsRequest": {
//   "allOf": [ { "$ref": "#/definitions/Request" }, {
//     "type": "object",
//     "description": "SetExceptionBreakpoints request; value of command field
//     is 'setExceptionBreakpoints'. The request configures the debuggers
//     response to thrown exceptions. If an exception is configured to break, a
//     StoppedEvent is fired (event type 'exception').", "properties": {
//       "command": {
//         "type": "string",
//         "enum": [ "setExceptionBreakpoints" ]
//       },
//       "arguments": {
//         "$ref": "#/definitions/SetExceptionBreakpointsArguments"
//       }
//     },
//     "required": [ "command", "arguments"  ]
//   }]
// },
// "SetExceptionBreakpointsArguments": {
//   "type": "object",
//   "description": "Arguments for 'setExceptionBreakpoints' request.",
//   "properties": {
//     "filters": {
//       "type": "array",
//       "items": {
//         "type": "string"
//       },
//       "description": "IDs of checked exception options. The set of IDs is
//       returned via the 'exceptionBreakpointFilters' capability."
//     },
//     "exceptionOptions": {
//       "type": "array",
//       "items": {
//         "$ref": "#/definitions/ExceptionOptions"
//       },
//       "description": "Configuration options for selected exceptions."
//     }
//   },
//   "required": [ "filters" ]
// },
// "SetExceptionBreakpointsResponse": {
//   "allOf": [ { "$ref": "#/definitions/Response" }, {
//     "type": "object",
//     "description": "Response to 'setExceptionBreakpoints' request. This is
//     just an acknowledgement, so no body field is required."
//   }]
// }
void SetExceptionBreakpointsRequestHandler::operator()(
    const llvm::json::Object &request) const {
  llvm::json::Object response;
  lldb::SBError error;
  FillResponse(request, response);
  const auto *arguments = request.getObject("arguments");
  const auto *filters = arguments->getArray("filters");
  // Keep a list of any exception breakpoint filter names that weren't set
  // so we can clear any exception breakpoints if needed.
  std::set<std::string> unset_filters;
  for (const auto &bp : *dap.exception_breakpoints)
    unset_filters.insert(bp.filter);

  for (const auto &value : *filters) {
    const auto filter = GetAsString(value);
    auto *exc_bp = dap.GetExceptionBreakpoint(std::string(filter));
    if (exc_bp) {
      exc_bp->SetBreakpoint();
      unset_filters.erase(std::string(filter));
    }
  }
  for (const auto &filter : unset_filters) {
    auto *exc_bp = dap.GetExceptionBreakpoint(filter);
    if (exc_bp)
      exc_bp->ClearBreakpoint();
  }
  dap.SendJSON(llvm::json::Value(std::move(response)));
}

} // namespace lldb_dap