1 files changed, 117 insertions, 0 deletions
diff --git a/contrib/llvm-project/lldb/source/Breakpoint/BreakpointID.cpp b/contrib/llvm-project/lldb/source/Breakpoint/BreakpointID.cpp
new file mode 100644
index 000000000000..b4a0a22f66c1
--- /dev/null
+++ b/contrib/llvm-project/lldb/source/Breakpoint/BreakpointID.cpp
@@ -0,0 +1,117 @@
+//===-- BreakpointID.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 <cstdio>
+#include <optional>
+
+#include "lldb/Breakpoint/Breakpoint.h"
+#include "lldb/Breakpoint/BreakpointID.h"
+#include "lldb/Utility/Status.h"
+#include "lldb/Utility/Stream.h"
+
+using namespace lldb;
+using namespace lldb_private;
+
+BreakpointID::BreakpointID(break_id_t bp_id, break_id_t loc_id)
+    : m_break_id(bp_id), m_location_id(loc_id) {}
+
+BreakpointID::~BreakpointID() = default;
+
+static llvm::StringRef g_range_specifiers[] = {"-", "to", "To", "TO"};
+
+// Tells whether or not STR is valid to use between two strings representing
+// breakpoint IDs, to indicate a range of breakpoint IDs.  This is broken out
+// into a separate function so that we can easily change or add to the format
+// for specifying ID ranges at a later date.
+
+bool BreakpointID::IsRangeIdentifier(llvm::StringRef str) {
+  return llvm::is_contained(g_range_specifiers, str);
+}
+
+bool BreakpointID::IsValidIDExpression(llvm::StringRef str) {
+  return BreakpointID::ParseCanonicalReference(str).has_value();
+}
+
+llvm::ArrayRef<llvm::StringRef> BreakpointID::GetRangeSpecifiers() {
+  return llvm::ArrayRef(g_range_specifiers);
+}
+
+void BreakpointID::GetDescription(Stream *s, lldb::DescriptionLevel level) {
+  if (level == eDescriptionLevelVerbose)
+    s->Printf("%p BreakpointID:", static_cast<void *>(this));
+
+  if (m_break_id == LLDB_INVALID_BREAK_ID)
+    s->PutCString("<invalid>");
+  else if (m_location_id == LLDB_INVALID_BREAK_ID)
+    s->Printf("%i", m_break_id);
+  else
+    s->Printf("%i.%i", m_break_id, m_location_id);
+}
+
+void BreakpointID::GetCanonicalReference(Stream *s, break_id_t bp_id,
+                                         break_id_t loc_id) {
+  if (bp_id == LLDB_INVALID_BREAK_ID)
+    s->PutCString("<invalid>");
+  else if (loc_id == LLDB_INVALID_BREAK_ID)
+    s->Printf("%i", bp_id);
+  else
+    s->Printf("%i.%i", bp_id, loc_id);
+}
+
+std::optional<BreakpointID>
+BreakpointID::ParseCanonicalReference(llvm::StringRef input) {
+  break_id_t bp_id;
+  break_id_t loc_id = LLDB_INVALID_BREAK_ID;
+
+  if (input.empty())
+    return std::nullopt;
+
+  // If it doesn't start with an integer, it's not valid.
+  if (input.consumeInteger(0, bp_id))
+    return std::nullopt;
+
+  // period is optional, but if it exists, it must be followed by a number.
+  if (input.consume_front(".")) {
+    if (input.consumeInteger(0, loc_id))
+      return std::nullopt;
+  }
+
+  // And at the end, the entire string must have been consumed.
+  if (!input.empty())
+    return std::nullopt;
+
+  return BreakpointID(bp_id, loc_id);
+}
+
+bool BreakpointID::StringIsBreakpointName(llvm::StringRef str, Status &error) {
+  error.Clear();
+  if (str.empty())
+  {
+    error.SetErrorString("Empty breakpoint names are not allowed");
+    return false;
+  }
+
+  // First character must be a letter or _
+  if (!isalpha(str[0]) && str[0] != '_')
+  {
+    error.SetErrorStringWithFormat("Breakpoint names must start with a "
+                                   "character or underscore: %s",
+                                   str.str().c_str());
+    return false;
+  }
+
+  // Cannot contain ., -, or space.
+  if (str.find_first_of(".- ") != llvm::StringRef::npos) {
+    error.SetErrorStringWithFormat("Breakpoint names cannot contain "
+                                   "'.' or '-' or spaces: \"%s\"",
+                                   str.str().c_str());
+    return false;
+  }
+
+  return true;
+}