1 files changed, 204 insertions, 0 deletions
diff --git a/contrib/llvm-project/lldb/source/Interpreter/OptionValuePathMappings.cpp b/contrib/llvm-project/lldb/source/Interpreter/OptionValuePathMappings.cpp
new file mode 100644
index 000000000000..75fcf0247475
--- /dev/null
+++ b/contrib/llvm-project/lldb/source/Interpreter/OptionValuePathMappings.cpp
@@ -0,0 +1,204 @@
+//===-- OptionValuePathMappings.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/OptionValuePathMappings.h"
+
+#include "lldb/Host/FileSystem.h"
+#include "lldb/Host/StringConvert.h"
+#include "lldb/Utility/Args.h"
+#include "lldb/Utility/FileSpec.h"
+#include "lldb/Utility/Stream.h"
+
+using namespace lldb;
+using namespace lldb_private;
+namespace {
+static bool VerifyPathExists(const char *path) {
+  if (path && path[0])
+    return FileSystem::Instance().Exists(path);
+  else
+    return false;
+}
+}
+
+void OptionValuePathMappings::DumpValue(const ExecutionContext *exe_ctx,
+                                        Stream &strm, uint32_t dump_mask) {
+  if (dump_mask & eDumpOptionType)
+    strm.Printf("(%s)", GetTypeAsCString());
+  if (dump_mask & eDumpOptionValue) {
+    if (dump_mask & eDumpOptionType)
+      strm.Printf(" =%s", (m_path_mappings.GetSize() > 0) ? "\n" : "");
+    m_path_mappings.Dump(&strm);
+  }
+}
+
+Status OptionValuePathMappings::SetValueFromString(llvm::StringRef value,
+                                                   VarSetOperationType op) {
+  Status error;
+  Args args(value.str());
+  const size_t argc = args.GetArgumentCount();
+
+  switch (op) {
+  case eVarSetOperationClear:
+    Clear();
+    NotifyValueChanged();
+    break;
+
+  case eVarSetOperationReplace:
+    // Must be at least one index + 1 pair of paths, and the pair count must be
+    // even
+    if (argc >= 3 && (((argc - 1) & 1) == 0)) {
+      uint32_t idx =
+          StringConvert::ToUInt32(args.GetArgumentAtIndex(0), UINT32_MAX);
+      const uint32_t count = m_path_mappings.GetSize();
+      if (idx > count) {
+        error.SetErrorStringWithFormat(
+            "invalid file list index %u, index must be 0 through %u", idx,
+            count);
+      } else {
+        bool changed = false;
+        for (size_t i = 1; i < argc; i += 2, ++idx) {
+          const char *orginal_path = args.GetArgumentAtIndex(i);
+          const char *replace_path = args.GetArgumentAtIndex(i + 1);
+          if (VerifyPathExists(replace_path)) {
+            ConstString a(orginal_path);
+            ConstString b(replace_path);
+            if (!m_path_mappings.Replace(a, b, idx, m_notify_changes))
+              m_path_mappings.Append(a, b, m_notify_changes);
+            changed = true;
+          } else {
+            error.SetErrorStringWithFormat(
+                "the replacement path doesn't exist: \"%s\"", replace_path);
+            break;
+          }
+        }
+        if (changed)
+          NotifyValueChanged();
+      }
+    } else {
+      error.SetErrorString("replace operation takes an array index followed by "
+                           "one or more path pairs");
+    }
+    break;
+
+  case eVarSetOperationAssign:
+    if (argc < 2 || (argc & 1)) {
+      error.SetErrorString("assign operation takes one or more path pairs");
+      break;
+    }
+    m_path_mappings.Clear(m_notify_changes);
+    // Fall through to append case
+    LLVM_FALLTHROUGH;
+  case eVarSetOperationAppend:
+    if (argc < 2 || (argc & 1)) {
+      error.SetErrorString("append operation takes one or more path pairs");
+      break;
+    } else {
+      bool changed = false;
+      for (size_t i = 0; i < argc; i += 2) {
+        const char *orginal_path = args.GetArgumentAtIndex(i);
+        const char *replace_path = args.GetArgumentAtIndex(i + 1);
+        if (VerifyPathExists(replace_path)) {
+          ConstString a(orginal_path);
+          ConstString b(replace_path);
+          m_path_mappings.Append(a, b, m_notify_changes);
+          m_value_was_set = true;
+          changed = true;
+        } else {
+          error.SetErrorStringWithFormat(
+              "the replacement path doesn't exist: \"%s\"", replace_path);
+          break;
+        }
+      }
+      if (changed)
+        NotifyValueChanged();
+    }
+    break;
+
+  case eVarSetOperationInsertBefore:
+  case eVarSetOperationInsertAfter:
+    // Must be at least one index + 1 pair of paths, and the pair count must be
+    // even
+    if (argc >= 3 && (((argc - 1) & 1) == 0)) {
+      uint32_t idx =
+          StringConvert::ToUInt32(args.GetArgumentAtIndex(0), UINT32_MAX);
+      const uint32_t count = m_path_mappings.GetSize();
+      if (idx > count) {
+        error.SetErrorStringWithFormat(
+            "invalid file list index %u, index must be 0 through %u", idx,
+            count);
+      } else {
+        bool changed = false;
+        if (op == eVarSetOperationInsertAfter)
+          ++idx;
+        for (size_t i = 1; i < argc; i += 2, ++idx) {
+          const char *orginal_path = args.GetArgumentAtIndex(i);
+          const char *replace_path = args.GetArgumentAtIndex(i + 1);
+          if (VerifyPathExists(replace_path)) {
+            ConstString a(orginal_path);
+            ConstString b(replace_path);
+            m_path_mappings.Insert(a, b, idx, m_notify_changes);
+            changed = true;
+          } else {
+            error.SetErrorStringWithFormat(
+                "the replacement path doesn't exist: \"%s\"", replace_path);
+            break;
+          }
+        }
+        if (changed)
+          NotifyValueChanged();
+      }
+    } else {
+      error.SetErrorString("insert operation takes an array index followed by "
+                           "one or more path pairs");
+    }
+    break;
+
+  case eVarSetOperationRemove:
+    if (argc > 0) {
+      std::vector<int> remove_indexes;
+      bool all_indexes_valid = true;
+      size_t i;
+      for (i = 0; all_indexes_valid && i < argc; ++i) {
+        const int idx =
+            StringConvert::ToSInt32(args.GetArgumentAtIndex(i), INT32_MAX);
+        if (idx == INT32_MAX)
+          all_indexes_valid = false;
+        else
+          remove_indexes.push_back(idx);
+      }
+
+      if (all_indexes_valid) {
+        size_t num_remove_indexes = remove_indexes.size();
+        if (num_remove_indexes) {
+          // Sort and then erase in reverse so indexes are always valid
+          llvm::sort(remove_indexes.begin(), remove_indexes.end());
+          for (size_t j = num_remove_indexes - 1; j < num_remove_indexes; ++j) {
+            m_path_mappings.Remove(j, m_notify_changes);
+          }
+        }
+        NotifyValueChanged();
+      } else {
+        error.SetErrorStringWithFormat(
+            "invalid array index '%s', aborting remove operation",
+            args.GetArgumentAtIndex(i));
+      }
+    } else {
+      error.SetErrorString("remove operation takes one or more array index");
+    }
+    break;
+
+  case eVarSetOperationInvalid:
+    error = OptionValue::SetValueFromString(value, op);
+    break;
+  }
+  return error;
+}
+
+lldb::OptionValueSP OptionValuePathMappings::DeepCopy() const {
+  return OptionValueSP(new OptionValuePathMappings(*this));
+}