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LibGUI: Add a GitCommit SyntaxHighlighter implementation

This highlighter just syntax highlights the commented lines in your git
commit message. It could potentially be enhanced to handle the rebase
UI or other more advanced cases in the future.
This commit is contained in:
Brian Gianforcaro 2022-01-17 19:36:09 -08:00 committed by Andreas Kling
parent d32736582e
commit 8e8d24fe29
5 changed files with 231 additions and 0 deletions

View file

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/*
* Copyright (c) 2022, Brian Gianforcaro <bgianf@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/StringView.h>
namespace GUI {
#define FOR_EACH_TOKEN_TYPE \
__TOKEN(Comment) \
__TOKEN(Unknown)
struct GitCommitPosition {
size_t line;
size_t column;
};
struct GitCommitToken {
enum class Type {
#define __TOKEN(x) x,
FOR_EACH_TOKEN_TYPE
#undef __TOKEN
};
char const* to_string() const
{
switch (m_type) {
#define __TOKEN(x) \
case Type::x: \
return #x;
FOR_EACH_TOKEN_TYPE
#undef __TOKEN
}
VERIFY_NOT_REACHED();
}
Type m_type { Type::Unknown };
StringView m_view;
GitCommitPosition m_start;
GitCommitPosition m_end;
};
class GitCommitLexer {
public:
GitCommitLexer(StringView);
Vector<GitCommitToken> lex();
private:
char peek(size_t offset = 0) const;
char consume();
StringView m_input;
size_t m_index { 0 };
GitCommitPosition m_position { 0, 0 };
};
}