forked from OSchip/llvm-project
82 lines
3.1 KiB
C++
82 lines
3.1 KiB
C++
//===-- CompletionRequest.cpp ---------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "lldb/Utility/CompletionRequest.h"
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using namespace lldb;
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using namespace lldb_private;
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CompletionRequest::CompletionRequest(llvm::StringRef command_line,
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unsigned raw_cursor_pos,
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CompletionResult &result)
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: m_command(command_line), m_raw_cursor_pos(raw_cursor_pos),
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m_result(result) {
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assert(raw_cursor_pos <= command_line.size() && "Out of bounds cursor?");
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// We parse the argument up to the cursor, so the last argument in
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// parsed_line is the one containing the cursor, and the cursor is after the
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// last character.
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llvm::StringRef partial_command(command_line.substr(0, raw_cursor_pos));
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m_parsed_line = Args(partial_command);
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if (GetParsedLine().GetArgumentCount() == 0) {
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m_cursor_index = 0;
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m_cursor_char_position = 0;
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} else {
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m_cursor_index = GetParsedLine().GetArgumentCount() - 1U;
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m_cursor_char_position =
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strlen(GetParsedLine().GetArgumentAtIndex(m_cursor_index));
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}
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// The cursor is after a space but the space is not part of the argument.
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// Let's add an empty fake argument to the end to make sure the completion
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// code. Note: The space could be part of the last argument when it's quoted.
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if (partial_command.endswith(" ") &&
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!GetCursorArgumentPrefix().endswith(" "))
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AppendEmptyArgument();
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}
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std::string CompletionResult::Completion::GetUniqueKey() const {
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// We build a unique key for this pair of completion:description. We
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// prefix the key with the length of the completion string. This prevents
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// that we could get any collisions from completions pairs such as these:
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// "foo:", "bar" would be "foo:bar", but will now be: "4foo:bar"
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// "foo", ":bar" would be "foo:bar", but will now be: "3foo:bar"
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std::string result;
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result.append(std::to_string(m_completion.size()));
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result.append(m_completion);
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result.append(std::to_string(static_cast<int>(m_mode)));
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result.append(":");
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result.append(m_descripton);
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return result;
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}
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void CompletionResult::AddResult(llvm::StringRef completion,
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llvm::StringRef description,
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CompletionMode mode) {
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Completion r(completion, description, mode);
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// Add the completion if we haven't seen the same value before.
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if (m_added_values.insert(r.GetUniqueKey()).second)
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m_results.push_back(r);
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}
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void CompletionResult::GetMatches(StringList &matches) const {
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matches.Clear();
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for (const Completion &completion : m_results)
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matches.AppendString(completion.GetCompletion());
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}
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void CompletionResult::GetDescriptions(StringList &descriptions) const {
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descriptions.Clear();
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for (const Completion &completion : m_results)
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descriptions.AppendString(completion.GetDescription());
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}
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