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/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file LICENSE.rst or https://cmake.org/licensing for details. */
#include "cmDebuggerBreakpointManager.h"
#include <algorithm>
#include <cstddef>
#include <cstdint>
#include <utility>
#include <cm3p/cppdap/optional.h>
#include <cm3p/cppdap/session.h>
#include <cm3p/cppdap/types.h>
#include "cmDebuggerSourceBreakpoint.h"
#include "cmListFileCache.h"
#include "cmSystemTools.h"
namespace cmDebugger {
cmDebuggerBreakpointManager::cmDebuggerBreakpointManager(
dap::Session* dapSession)
: DapSession(dapSession)
{
// https://microsoft.github.io/debug-adapter-protocol/specification#Requests_SetBreakpoints
DapSession->registerHandler([&](dap::SetBreakpointsRequest const& request) {
return HandleSetBreakpointsRequest(request);
});
}
int64_t cmDebuggerBreakpointManager::FindFunctionStartLine(
std::string const& sourcePath, int64_t line)
{
auto location =
find_if(ListFileFunctionLines[sourcePath].begin(),
ListFileFunctionLines[sourcePath].end(),
[=](cmDebuggerFunctionLocation const& loc) {
return loc.StartLine <= line && loc.EndLine >= line;
});
if (location != ListFileFunctionLines[sourcePath].end()) {
return location->StartLine;
}
return 0;
}
int64_t cmDebuggerBreakpointManager::CalibrateBreakpointLine(
std::string const& sourcePath, int64_t line)
{
auto location = find_if(ListFileFunctionLines[sourcePath].begin(),
ListFileFunctionLines[sourcePath].end(),
[=](cmDebuggerFunctionLocation const& loc) {
return loc.StartLine >= line;
});
if (location != ListFileFunctionLines[sourcePath].end()) {
return location->StartLine;
}
if (!ListFileFunctionLines[sourcePath].empty() &&
ListFileFunctionLines[sourcePath].back().EndLine <= line) {
// return last function start line for any breakpoints after.
return ListFileFunctionLines[sourcePath].back().StartLine;
}
return 0;
}
dap::SetBreakpointsResponse
cmDebuggerBreakpointManager::HandleSetBreakpointsRequest(
dap::SetBreakpointsRequest const& request)
{
std::unique_lock<std::mutex> lock(Mutex);
dap::SetBreakpointsResponse response;
auto sourcePath =
cmSystemTools::GetActualCaseForPath(request.source.path.value());
dap::array<dap::SourceBreakpoint> const defaultValue{};
auto const& breakpoints = request.breakpoints.value(defaultValue);
if (Breakpoints.find(sourcePath) != Breakpoints.end()) {
Breakpoints[sourcePath].clear();
}
response.breakpoints.resize(breakpoints.size());
if (ListFileFunctionLines.find(sourcePath) != ListFileFunctionLines.end()) {
// The file has loaded, we can validate breakpoints.
for (size_t i = 0; i < breakpoints.size(); i++) {
int64_t correctedLine =
CalibrateBreakpointLine(sourcePath, breakpoints[i].line);
if (correctedLine > 0) {
Breakpoints[sourcePath].emplace_back(NextBreakpointId++,
correctedLine);
response.breakpoints[i].id = Breakpoints[sourcePath].back().GetId();
response.breakpoints[i].line =
Breakpoints[sourcePath].back().GetLine();
response.breakpoints[i].verified = true;
} else {
response.breakpoints[i].verified = false;
response.breakpoints[i].line = breakpoints[i].line;
}
dap::Source dapSrc;
dapSrc.path = sourcePath;
response.breakpoints[i].source = dapSrc;
}
} else {
// The file has not loaded, validate breakpoints later.
ListFilePendingValidations.emplace(sourcePath);
for (size_t i = 0; i < breakpoints.size(); i++) {
Breakpoints[sourcePath].emplace_back(NextBreakpointId++,
breakpoints[i].line);
response.breakpoints[i].id = Breakpoints[sourcePath].back().GetId();
response.breakpoints[i].line = Breakpoints[sourcePath].back().GetLine();
response.breakpoints[i].verified = false;
dap::Source dapSrc;
dapSrc.path = sourcePath;
response.breakpoints[i].source = dapSrc;
}
}
return response;
}
void cmDebuggerBreakpointManager::SourceFileLoaded(
std::string const& sourcePath,
std::vector<cmListFileFunction> const& functions)
{
std::unique_lock<std::mutex> lock(Mutex);
if (ListFileFunctionLines.find(sourcePath) != ListFileFunctionLines.end()) {
// this is not expected.
return;
}
for (cmListFileFunction const& func : functions) {
ListFileFunctionLines[sourcePath].emplace_back(
cmDebuggerFunctionLocation{ func.Line(), func.LineEnd() });
}
if (ListFilePendingValidations.find(sourcePath) ==
ListFilePendingValidations.end()) {
return;
}
ListFilePendingValidations.erase(sourcePath);
for (size_t i = 0; i < Breakpoints[sourcePath].size(); i++) {
dap::BreakpointEvent breakpointEvent;
breakpointEvent.breakpoint.id = Breakpoints[sourcePath][i].GetId();
breakpointEvent.breakpoint.line = Breakpoints[sourcePath][i].GetLine();
auto source = dap::Source();
source.path = sourcePath;
breakpointEvent.breakpoint.source = source;
int64_t correctedLine = CalibrateBreakpointLine(
sourcePath, Breakpoints[sourcePath][i].GetLine());
if (correctedLine != Breakpoints[sourcePath][i].GetLine()) {
Breakpoints[sourcePath][i].ChangeLine(correctedLine);
}
breakpointEvent.reason = "changed";
breakpointEvent.breakpoint.verified = (correctedLine > 0);
if (breakpointEvent.breakpoint.verified) {
breakpointEvent.breakpoint.line = correctedLine;
} else {
Breakpoints[sourcePath][i].Invalid();
}
DapSession->send(breakpointEvent);
}
}
std::vector<int64_t> cmDebuggerBreakpointManager::GetBreakpoints(
std::string const& sourcePath, int64_t line)
{
std::unique_lock<std::mutex> lock(Mutex);
auto const& all = Breakpoints[sourcePath];
std::vector<int64_t> breakpoints;
if (all.empty()) {
return breakpoints;
}
auto it = all.begin();
while ((it = std::find_if(
it, all.end(), [&](cmDebuggerSourceBreakpoint const& breakpoint) {
return (breakpoint.GetIsValid() && breakpoint.GetLine() == line);
})) != all.end()) {
breakpoints.emplace_back(it->GetId());
++it;
}
return breakpoints;
}
size_t cmDebuggerBreakpointManager::GetBreakpointCount() const
{
size_t count = 0;
for (auto const& pair : Breakpoints) {
count += pair.second.size();
}
return count;
}
void cmDebuggerBreakpointManager::ClearAll()
{
std::unique_lock<std::mutex> lock(Mutex);
Breakpoints.clear();
}
} // namespace cmDebugger
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