ladybird/Userland/Libraries/LibGUI/GMLLexer.h
Max Wipfli cb5a50d3f7 LibGUI: Fix off-by-one error in Lexer tokens
This changes the INI and GML lexers to conform to the now-fixed
rendering of syntax highlighting spans in GUI::TextEditor.

The other user of GMLToken::m_end, GMLAutocompleteProvider, has been
modified to take into account that end position columns have been
incremented by one.
2021-06-05 00:32:28 +04:30

70 lines
1.2 KiB
C++

/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/StringView.h>
namespace GUI {
#define FOR_EACH_TOKEN_TYPE \
__TOKEN(Unknown) \
__TOKEN(Comment) \
__TOKEN(ClassMarker) \
__TOKEN(ClassName) \
__TOKEN(LeftCurly) \
__TOKEN(RightCurly) \
__TOKEN(Identifier) \
__TOKEN(Colon) \
__TOKEN(JsonValue)
struct GMLPosition {
size_t line;
size_t column;
};
struct GMLToken {
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;
GMLPosition m_start;
GMLPosition m_end;
};
class GMLLexer {
public:
GMLLexer(StringView const&);
Vector<GMLToken> lex();
private:
char peek(size_t offset = 0) const;
char consume();
StringView m_input;
size_t m_index { 0 };
GMLPosition m_position { 0, 0 };
};
}