ef06dd4328
We currently have two lists in the CompletionRequest that we inherited from the old API: The complete list of arguments ignoring where the user requested completion and the list of arguments that stops at the cursor. Having two lists of arguments is confusing and can lead to subtle errors, so let's remove the complete list until we actually need it. llvm-svn: 372692
86 lines
3.2 KiB
C++
86 lines
3.2 KiB
C++
//===-- CompletionRequest.cpp -----------------------------------*- C++ -*-===//
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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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m_parsed_line.AppendArgument(llvm::StringRef());
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// Set the cursor to the start of the fake argument.
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m_cursor_index++;
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m_cursor_char_position = 0;
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}
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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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