[lldb/Lua] add support for Lua function breakpoint

Adds support for running a Lua function when a breakpoint is hit.

Example:
   breakpoint command add -s lua -F abc

The above runs the Lua function 'abc' passing 2 arguments. 'frame', 'bp_loc' and 'extra_args'.

A third parameter 'extra_args' is only present when there is structured data
declared in the command line.

Example:
   breakpoint command add -s lua -F abc -k foo -v bar

Differential Revision: https://reviews.llvm.org/D93649

1 files changed, 14 insertions, 0 deletions

diff --git a/lldb/source/Plugins/ScriptInterpreter/Lua/ScriptInterpreterLua.h b/lldb/source/Plugins/ScriptInterpreter/Lua/ScriptInterpreterLua.h
index 6c3fc01..1130cee 100644
--- a/lldb/source/Plugins/ScriptInterpreter/Lua/ScriptInterpreterLua.h
+++ b/lldb/source/Plugins/ScriptInterpreter/Lua/ScriptInterpreterLua.h
@@ -9,6 +9,7 @@
 #ifndef liblldb_ScriptInterpreterLua_h_
 #define liblldb_ScriptInterpreterLua_h_
 
+#include "lldb/Core/StructuredDataImpl.h"
 #include "lldb/Interpreter/ScriptInterpreter.h"
 #include "lldb/Utility/Status.h"
 #include "lldb/lldb-enumerations.h"
@@ -22,6 +23,11 @@ public:
     CommandDataLua() : BreakpointOptions::CommandData() {
       interpreter = lldb::eScriptLanguageLua;
     }
+    CommandDataLua(StructuredData::ObjectSP extra_args_sp)
+        : BreakpointOptions::CommandData(), m_extra_args_sp(extra_args_sp) {
+      interpreter = lldb::eScriptLanguageLua;
+    }
+    StructuredData::ObjectSP m_extra_args_sp;
   };
 
   ScriptInterpreterLua(Debugger &debugger);
@@ -72,9 +78,17 @@ public:
   Status SetBreakpointCommandCallback(BreakpointOptions *bp_options,
                                       const char *command_body_text) override;
 
+  Status SetBreakpointCommandCallbackFunction(
+      BreakpointOptions *bp_options, const char *function_name,
+      StructuredData::ObjectSP extra_args_sp) override;
+
 private:
   std::unique_ptr<Lua> m_lua;
   bool m_session_is_active = false;
+
+  Status RegisterBreakpointCallback(BreakpointOptions *bp_options,
+                                    const char *command_body_text,
+                                    StructuredData::ObjectSP extra_args_sp);
 };
 
 } // namespace lldb_private