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HackStudio: Basic C++ autocomplete logic

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CppAutoComplete gets a string of code and a position within it, and
returns a Vector of auto-complete suggestions that are relevant for the
given position.

Currently, it's very naive - it uses our CppLexer to find identifiers
in the code which the auto-complete target is a prefix of.
This commit is contained in:
Itamar 2020-09-20 20:55:36 +03:00 • committed by Andreas Kling
parent 253ab7536a
commit 42bdcf1828
3 changed files with 139 additions and 0 deletions
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46
DevTools/HackStudio/CppAutoComplete.h Normal file
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/*
* Copyright (c) 2020, Itamar S. <itamar8910@gmail.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <AK/String.h>
#include <AK/Vector.h>
#include <LibGUI/CppLexer.h>
#include <LibGUI/TextPosition.h>
namespace HackStudio {
class CppAutoComplete {
public:
CppAutoComplete() = delete;
static Vector<String> get_suggestions(const String& code, GUI::TextPosition autocomplete_position);
private:
static Optional<size_t> token_in_position(const Vector<GUI::CppToken>&, GUI::TextPosition);
static String text_of_token(const Vector<String> lines, const GUI::CppToken&);
static Vector<String> identifier_prefixes(const Vector<String> lines, const Vector<GUI::CppToken>&, size_t target_token_index);
};
};