[Lldb-commits] [lldb] [LLDB] Add AST node classes, functions, etc. for Data Inspection Lang… (PR #95738)

[Pavel Labath via lldb-commits]

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@@ -0,0 +1,468 @@
+//===-- DILAST.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 "lldb/Core/DILAST.h"
+#include "lldb/API/SBType.h"
+#include "lldb/Core/ValueObjectRegister.h"
+#include "lldb/Core/ValueObjectVariable.h"
+#include "lldb/Symbol/TypeList.h"
+#include "lldb/Symbol/VariableList.h"
+#include "lldb/Target/LanguageRuntime.h"
+#include "lldb/Target/RegisterContext.h"
+#include "llvm/ADT/StringRef.h"
+
+#include <vector>
+
+namespace lldb_private {
+
+lldb::ValueObjectSP DILGetSPWithLock(lldb::ValueObjectSP in_valobj_sp,
+                                     lldb::DynamicValueType use_dynamic,
+                                     bool use_synthetic) {
+  Process::StopLocker stop_locker;
+  std::unique_lock<std::recursive_mutex> lock;
+  Status error;
+
+  if (!in_valobj_sp) {
+    error.SetErrorString("invalid value object");
+    return in_valobj_sp;
+  }
+
+  lldb::ValueObjectSP value_sp = in_valobj_sp;
+
+  Target *target = value_sp->GetTargetSP().get();
+  // If this ValueObject holds an error, then it is valuable for that.
+  if (value_sp->GetError().Fail())
+    return value_sp;
+
+  if (!target)
+    return lldb::ValueObjectSP();
+
+  lock = std::unique_lock<std::recursive_mutex>(target->GetAPIMutex());
+
+  lldb::ProcessSP process_sp(value_sp->GetProcessSP());
+  if (process_sp && !stop_locker.TryLock(&process_sp->GetRunLock())) {
+    // We don't allow people to play around with ValueObject if the process
+    // is running. If you want to look at values, pause the process, then
+    // look.
+    error.SetErrorString("process must be stopped.");
+    return lldb::ValueObjectSP();
+  }
+
+  if (use_dynamic != lldb::eNoDynamicValues) {
+    lldb::ValueObjectSP dynamic_sp = value_sp->GetDynamicValue(use_dynamic);
+    if (dynamic_sp)
+      value_sp = dynamic_sp;
+  }
+
+  if (use_synthetic) {
+    lldb::ValueObjectSP synthetic_sp = value_sp->GetSyntheticValue();
+    if (synthetic_sp)
+      value_sp = synthetic_sp;
+  }
+
+  if (!value_sp)
+    error.SetErrorString("invalid value object");
+
+  return value_sp;
+}
+
+CompilerType DILASTNode::result_type_deref() const {
+  auto type = result_type();
+  return type.IsReferenceType() ? type.GetNonReferenceType() : type;
+}
+
+static std::unordered_map<std::string, CompilerType> context_args;
+
+bool IsContextVar(const std::string &name) {
+  return context_args.find(name) != context_args.end();
+}
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labath wrote:

This definitely needs to be scoped to something (and not a global), but since its not used right now, let's remove it.

https://github.com/llvm/llvm-project/pull/95738