Import LLVM 10.0.0 release including clang, lld and lldb.

ok hackroom
tested by plenty

1 files changed, 101 insertions, 0 deletions

diff --git a/gnu/llvm/lldb/source/Plugins/ExpressionParser/Clang/ClangPersistentVariables.cpp b/gnu/llvm/lldb/source/Plugins/ExpressionParser/Clang/ClangPersistentVariables.cpp
new file mode 100644
index 00000000000..41d62a462ab
--- /dev/null
+++ b/gnu/llvm/lldb/source/Plugins/ExpressionParser/Clang/ClangPersistentVariables.cpp
@@ -0,0 +1,101 @@
+//===-- ClangPersistentVariables.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 "ClangPersistentVariables.h"
+
+#include "lldb/Core/Value.h"
+#include "lldb/Symbol/ClangASTContext.h"
+#include "lldb/Target/Target.h"
+#include "lldb/Utility/DataExtractor.h"
+#include "lldb/Utility/Log.h"
+#include "lldb/Utility/StreamString.h"
+
+#include "clang/AST/Decl.h"
+
+#include "llvm/ADT/StringMap.h"
+
+using namespace lldb;
+using namespace lldb_private;
+
+ClangPersistentVariables::ClangPersistentVariables()
+    : lldb_private::PersistentExpressionState(LLVMCastKind::eKindClang) {}
+
+ExpressionVariableSP ClangPersistentVariables::CreatePersistentVariable(
+    const lldb::ValueObjectSP &valobj_sp) {
+  return AddNewlyConstructedVariable(new ClangExpressionVariable(valobj_sp));
+}
+
+ExpressionVariableSP ClangPersistentVariables::CreatePersistentVariable(
+    ExecutionContextScope *exe_scope, ConstString name,
+    const CompilerType &compiler_type, lldb::ByteOrder byte_order,
+    uint32_t addr_byte_size) {
+  return AddNewlyConstructedVariable(new ClangExpressionVariable(
+      exe_scope, name, compiler_type, byte_order, addr_byte_size));
+}
+
+void ClangPersistentVariables::RemovePersistentVariable(
+    lldb::ExpressionVariableSP variable) {
+  RemoveVariable(variable);
+
+  // Check if the removed variable was the last one that was created. If yes,
+  // reuse the variable id for the next variable.
+
+  // Nothing to do if we have not assigned a variable id so far.
+  if (m_next_persistent_variable_id == 0)
+    return;
+
+  llvm::StringRef name = variable->GetName().GetStringRef();
+  // Remove the prefix from the variable that only the indes is left.
+  if (!name.consume_front(GetPersistentVariablePrefix(false)))
+    return;
+
+  // Check if the variable contained a variable id.
+  uint32_t variable_id;
+  if (name.getAsInteger(10, variable_id))
+    return;
+  // If it's the most recent variable id that was assigned, make sure that this
+  // variable id will be used for the next persistent variable.
+  if (variable_id == m_next_persistent_variable_id - 1)
+    m_next_persistent_variable_id--;
+}
+
+llvm::Optional<CompilerType>
+ClangPersistentVariables::GetCompilerTypeFromPersistentDecl(
+    ConstString type_name) {
+  PersistentDecl p = m_persistent_decls.lookup(type_name.GetCString());
+
+  if (p.m_decl == nullptr)
+    return llvm::None;
+
+  if (clang::TypeDecl *tdecl = llvm::dyn_cast<clang::TypeDecl>(p.m_decl)) {
+    opaque_compiler_type_t t = static_cast<opaque_compiler_type_t>(
+        const_cast<clang::Type *>(tdecl->getTypeForDecl()));
+    return CompilerType(p.m_context, t);
+  }
+  return llvm::None;
+}
+
+void ClangPersistentVariables::RegisterPersistentDecl(ConstString name,
+                                                      clang::NamedDecl *decl,
+                                                      ClangASTContext *ctx) {
+  PersistentDecl p = {decl, ctx};
+  m_persistent_decls.insert(std::make_pair(name.GetCString(), p));
+
+  if (clang::EnumDecl *enum_decl = llvm::dyn_cast<clang::EnumDecl>(decl)) {
+    for (clang::EnumConstantDecl *enumerator_decl : enum_decl->enumerators()) {
+      p = {enumerator_decl, ctx};
+      m_persistent_decls.insert(std::make_pair(
+          ConstString(enumerator_decl->getNameAsString()).GetCString(), p));
+    }
+  }
+}
+
+clang::NamedDecl *
+ClangPersistentVariables::GetPersistentDecl(ConstString name) {
+  return m_persistent_decls.lookup(name.GetCString()).m_decl;
+}