Andrew Top | 61a8495 | 2019-04-30 15:07:33 -0700 | [diff] [blame] | 1 | //===-- CompletionRequest.cpp -----------------------------------*- C++ -*-===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | |
| 10 | #include "lldb/Utility/CompletionRequest.h" |
| 11 | |
| 12 | using namespace lldb; |
| 13 | using namespace lldb_private; |
| 14 | |
| 15 | CompletionRequest::CompletionRequest(llvm::StringRef command_line, |
| 16 | unsigned raw_cursor_pos, |
| 17 | int match_start_point, |
| 18 | int max_return_elements, |
| 19 | StringList &matches) |
| 20 | : m_command(command_line), m_raw_cursor_pos(raw_cursor_pos), |
| 21 | m_match_start_point(match_start_point), |
| 22 | m_max_return_elements(max_return_elements), m_matches(&matches) { |
| 23 | matches.Clear(); |
| 24 | |
| 25 | // We parse the argument up to the cursor, so the last argument in |
| 26 | // parsed_line is the one containing the cursor, and the cursor is after the |
| 27 | // last character. |
| 28 | m_parsed_line = Args(command_line); |
| 29 | m_partial_parsed_line = Args(command_line.substr(0, raw_cursor_pos)); |
| 30 | |
| 31 | m_cursor_index = m_partial_parsed_line.GetArgumentCount() - 1; |
| 32 | |
| 33 | if (m_cursor_index == -1) |
| 34 | m_cursor_char_position = 0; |
| 35 | else |
| 36 | m_cursor_char_position = |
| 37 | strlen(m_partial_parsed_line.GetArgumentAtIndex(m_cursor_index)); |
| 38 | |
| 39 | matches.Clear(); |
| 40 | |
| 41 | const char *cursor = command_line.data() + raw_cursor_pos; |
| 42 | if (raw_cursor_pos > 0 && cursor[-1] == ' ') { |
| 43 | // We are just after a space. If we are in an argument, then we will |
| 44 | // continue parsing, but if we are between arguments, then we have to |
| 45 | // complete whatever the next element would be. We can distinguish the two |
| 46 | // cases because if we are in an argument (e.g. because the space is |
| 47 | // protected by a quote) then the space will also be in the parsed |
| 48 | // argument... |
| 49 | |
| 50 | const char *current_elem = |
| 51 | m_partial_parsed_line.GetArgumentAtIndex(m_cursor_index); |
| 52 | if (m_cursor_char_position == 0 || |
| 53 | current_elem[m_cursor_char_position - 1] != ' ') { |
| 54 | m_parsed_line.InsertArgumentAtIndex(m_cursor_index + 1, llvm::StringRef(), |
| 55 | '\0'); |
| 56 | m_cursor_index++; |
| 57 | m_cursor_char_position = 0; |
| 58 | } |
| 59 | } |
| 60 | } |