cmake: Add debugger

- Depends on cppdap and jsoncpp.
- Add --debugger argument to enable the Debugger.
- Add --debugger-pipe argument for DAP traffics over named pipes.
- Support breakpoints by filenames and line numbers.
- Support exception breakpoints.
- Call stack shows filenames and line numbers.
- Show Cache Variables.
- Show the state of currently defined targets,
  tests and directories with their properties.
- Add cmakeVersion to DAP initialize response.
- Include unit tests.

Co-authored-by: Ben McMorran <bemcmorr@microsoft.com>

1 files changed, 28 insertions, 0 deletions

diff --git a/Source/cmDebuggerStackFrame.cxx b/Source/cmDebuggerStackFrame.cxx
new file mode 100644
index 0000000..789b0a5
--- /dev/null
+++ b/Source/cmDebuggerStackFrame.cxx
@@ -0,0 +1,28 @@
+/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+   file Copyright.txt or https://cmake.org/licensing for details.  */
+#include "cmDebuggerStackFrame.h"
+
+#include <utility>
+
+#include "cmListFileCache.h"
+
+namespace cmDebugger {
+
+std::atomic<int64_t> cmDebuggerStackFrame::NextId(1);
+
+cmDebuggerStackFrame::cmDebuggerStackFrame(cmMakefile* mf,
+                                           std::string sourcePath,
+                                           cmListFileFunction const& lff)
+  : Id(NextId.fetch_add(1))
+  , FileName(std::move(sourcePath))
+  , Function(lff)
+  , Makefile(mf)
+{
+}
+
+int64_t cmDebuggerStackFrame::GetLine() const noexcept
+{
+  return this->Function.Line();
+}
+
+} // namespace cmDebugger