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