diff options
Diffstat (limited to 'contrib/llvm-project/lldb/source/Commands/CommandObjectRegexCommand.cpp')
-rw-r--r-- | contrib/llvm-project/lldb/source/Commands/CommandObjectRegexCommand.cpp | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/contrib/llvm-project/lldb/source/Commands/CommandObjectRegexCommand.cpp b/contrib/llvm-project/lldb/source/Commands/CommandObjectRegexCommand.cpp new file mode 100644 index 000000000000..1bf29d3c047b --- /dev/null +++ b/contrib/llvm-project/lldb/source/Commands/CommandObjectRegexCommand.cpp @@ -0,0 +1,90 @@ +//===-- CommandObjectRegexCommand.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 "CommandObjectRegexCommand.h" +#include "lldb/Interpreter/CommandInterpreter.h" +#include "lldb/Interpreter/CommandReturnObject.h" + +using namespace lldb; +using namespace lldb_private; + +// CommandObjectRegexCommand constructor +CommandObjectRegexCommand::CommandObjectRegexCommand( + CommandInterpreter &interpreter, llvm::StringRef name, llvm::StringRef help, + llvm::StringRef syntax, uint32_t max_matches, uint32_t completion_type_mask, + bool is_removable) + : CommandObjectRaw(interpreter, name, help, syntax), + m_max_matches(max_matches), m_completion_type_mask(completion_type_mask), + m_entries(), m_is_removable(is_removable) {} + +// Destructor +CommandObjectRegexCommand::~CommandObjectRegexCommand() {} + +bool CommandObjectRegexCommand::DoExecute(llvm::StringRef command, + CommandReturnObject &result) { + EntryCollection::const_iterator pos, end = m_entries.end(); + for (pos = m_entries.begin(); pos != end; ++pos) { + llvm::SmallVector<llvm::StringRef, 4> matches; + if (pos->regex.Execute(command, &matches)) { + std::string new_command(pos->command); + char percent_var[8]; + size_t idx, percent_var_idx; + for (uint32_t match_idx = 1; match_idx <= m_max_matches; ++match_idx) { + if (match_idx < matches.size()) { + const std::string match_str = matches[match_idx].str(); + const int percent_var_len = + ::snprintf(percent_var, sizeof(percent_var), "%%%u", match_idx); + for (idx = 0; (percent_var_idx = new_command.find( + percent_var, idx)) != std::string::npos;) { + new_command.erase(percent_var_idx, percent_var_len); + new_command.insert(percent_var_idx, match_str); + idx += percent_var_idx + match_str.size(); + } + } + } + // Interpret the new command and return this as the result! + if (m_interpreter.GetExpandRegexAliases()) + result.GetOutputStream().Printf("%s\n", new_command.c_str()); + // Pass in true for "no context switching". The command that called us + // should have set up the context appropriately, we shouldn't have to + // redo that. + return m_interpreter.HandleCommand( + new_command.c_str(), eLazyBoolCalculate, result, nullptr, true, true); + } + } + result.SetStatus(eReturnStatusFailed); + if (!GetSyntax().empty()) + result.AppendError(GetSyntax()); + else + result.GetOutputStream() << "Command contents '" << command + << "' failed to match any " + "regular expression in the '" + << m_cmd_name << "' regex "; + return false; +} + +bool CommandObjectRegexCommand::AddRegexCommand(llvm::StringRef re_cstr, + llvm::StringRef command_cstr) { + m_entries.resize(m_entries.size() + 1); + // Only add the regular expression if it compiles + m_entries.back().regex = RegularExpression(re_cstr); + if (m_entries.back().regex.IsValid()) { + m_entries.back().command = command_cstr.str(); + return true; + } + // The regex didn't compile... + m_entries.pop_back(); + return false; +} + +void CommandObjectRegexCommand::HandleCompletion(CompletionRequest &request) { + if (m_completion_type_mask) { + CommandCompletions::InvokeCommonCompletionCallbacks( + GetCommandInterpreter(), m_completion_type_mask, request, nullptr); + } +} |