82 lines · cpp
1//===-- CompletionRequest.cpp ---------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9#include "lldb/Utility/CompletionRequest.h"10 11using namespace lldb;12using namespace lldb_private;13 14CompletionRequest::CompletionRequest(llvm::StringRef command_line,15 unsigned raw_cursor_pos,16 CompletionResult &result)17 : m_command(command_line), m_raw_cursor_pos(raw_cursor_pos),18 m_result(result) {19 assert(raw_cursor_pos <= command_line.size() && "Out of bounds cursor?");20 21 // We parse the argument up to the cursor, so the last argument in22 // parsed_line is the one containing the cursor, and the cursor is after the23 // last character.24 llvm::StringRef partial_command(command_line.substr(0, raw_cursor_pos));25 m_parsed_line = Args(partial_command);26 27 if (GetParsedLine().GetArgumentCount() == 0) {28 m_cursor_index = 0;29 m_cursor_char_position = 0;30 } else {31 m_cursor_index = GetParsedLine().GetArgumentCount() - 1U;32 m_cursor_char_position =33 strlen(GetParsedLine().GetArgumentAtIndex(m_cursor_index));34 }35 36 // The cursor is after a space but the space is not part of the argument.37 // Let's add an empty fake argument to the end to make sure the completion38 // code. Note: The space could be part of the last argument when it's quoted.39 if (partial_command.ends_with(" ") &&40 !GetCursorArgumentPrefix().ends_with(" "))41 AppendEmptyArgument();42}43 44std::string CompletionResult::Completion::GetUniqueKey() const {45 46 // We build a unique key for this pair of completion:description. We47 // prefix the key with the length of the completion string. This prevents48 // that we could get any collisions from completions pairs such as these:49 // "foo:", "bar" would be "foo:bar", but will now be: "4foo:bar"50 // "foo", ":bar" would be "foo:bar", but will now be: "3foo:bar"51 52 std::string result;53 result.append(std::to_string(m_completion.size()));54 result.append(m_completion);55 result.append(std::to_string(static_cast<int>(m_mode)));56 result.append(":");57 result.append(m_descripton);58 return result;59}60 61void CompletionResult::AddResult(llvm::StringRef completion,62 llvm::StringRef description,63 CompletionMode mode) {64 Completion r(completion, description, mode);65 66 // Add the completion if we haven't seen the same value before.67 if (m_added_values.insert(r.GetUniqueKey()).second)68 m_results.push_back(r);69}70 71void CompletionResult::GetMatches(StringList &matches) const {72 matches.Clear();73 for (const Completion &completion : m_results)74 matches.AppendString(completion.GetCompletion());75}76 77void CompletionResult::GetDescriptions(StringList &descriptions) const {78 descriptions.Clear();79 for (const Completion &completion : m_results)80 descriptions.AppendString(completion.GetDescription());81}82