1 files changed, 119 insertions, 0 deletions
diff --git a/lldb/source/Interpreter/OptionGroupWatchpoint.cpp b/lldb/source/Interpreter/OptionGroupWatchpoint.cpp
new file mode 100644
index 0000000000000..682f99b8c5cce
--- /dev/null
+++ b/lldb/source/Interpreter/OptionGroupWatchpoint.cpp
@@ -0,0 +1,119 @@
+//===-- OptionGroupWatchpoint.cpp -------------------------------*- C++ -*-===//
+//
+// 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 "lldb/Interpreter/OptionGroupWatchpoint.h"
+
+#include "lldb/Host/OptionParser.h"
+#include "lldb/Interpreter/OptionArgParser.h"
+#include "lldb/lldb-enumerations.h"
+
+using namespace lldb;
+using namespace lldb_private;
+
+static constexpr OptionEnumValueElement g_watch_type[] = {
+    {
+        OptionGroupWatchpoint::eWatchRead,
+        "read",
+        "Watch for read",
+    },
+    {
+        OptionGroupWatchpoint::eWatchWrite,
+        "write",
+        "Watch for write",
+    },
+    {
+        OptionGroupWatchpoint::eWatchReadWrite,
+        "read_write",
+        "Watch for read/write",
+    },
+};
+
+static constexpr OptionEnumValueElement g_watch_size[] = {
+    {
+        1,
+        "1",
+        "Watch for byte size of 1",
+    },
+    {
+        2,
+        "2",
+        "Watch for byte size of 2",
+    },
+    {
+        4,
+        "4",
+        "Watch for byte size of 4",
+    },
+    {
+        8,
+        "8",
+        "Watch for byte size of 8",
+    },
+};
+
+static constexpr OptionDefinition g_option_table[] = {
+    {LLDB_OPT_SET_1, false, "watch", 'w', OptionParser::eRequiredArgument,
+     nullptr, OptionEnumValues(g_watch_type), 0, eArgTypeWatchType,
+     "Specify the type of watching to perform."},
+    {LLDB_OPT_SET_1, false, "size", 's', OptionParser::eRequiredArgument,
+     nullptr, OptionEnumValues(g_watch_size), 0, eArgTypeByteSize,
+     "Number of bytes to use to watch a region."}};
+
+bool OptionGroupWatchpoint::IsWatchSizeSupported(uint32_t watch_size) {
+  for (const auto& size : g_watch_size) {
+    if (0  == size.value)
+      break;
+    if (watch_size == size.value)
+      return true;
+  }
+  return false;
+}
+
+OptionGroupWatchpoint::OptionGroupWatchpoint() : OptionGroup() {}
+
+OptionGroupWatchpoint::~OptionGroupWatchpoint() {}
+
+Status
+OptionGroupWatchpoint::SetOptionValue(uint32_t option_idx,
+                                      llvm::StringRef option_arg,
+                                      ExecutionContext *execution_context) {
+  Status error;
+  const int short_option = g_option_table[option_idx].short_option;
+  switch (short_option) {
+  case 'w': {
+    WatchType tmp_watch_type;
+    tmp_watch_type = (WatchType)OptionArgParser::ToOptionEnum(
+        option_arg, g_option_table[option_idx].enum_values, 0, error);
+    if (error.Success()) {
+      watch_type = tmp_watch_type;
+      watch_type_specified = true;
+    }
+    break;
+  }
+  case 's':
+    watch_size = (uint32_t)OptionArgParser::ToOptionEnum(
+        option_arg, g_option_table[option_idx].enum_values, 0, error);
+    break;
+
+  default:
+    llvm_unreachable("Unimplemented option");
+  }
+
+  return error;
+}
+
+void OptionGroupWatchpoint::OptionParsingStarting(
+    ExecutionContext *execution_context) {
+  watch_type_specified = false;
+  watch_type = eWatchInvalid;
+  watch_size = 0;
+}
+
+llvm::ArrayRef<OptionDefinition> OptionGroupWatchpoint::GetDefinitions() {
+  return llvm::makeArrayRef(g_option_table);
+}