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 } 61