mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-12-04 21:40:33 +00:00
116 lines
3.4 KiB
C++
116 lines
3.4 KiB
C++
/*
|
|
* Copyright (c) 2020, Benoit Lormeau <blormeau@outlook.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/Function.h>
|
|
#include <AK/StringView.h>
|
|
|
|
namespace AK {
|
|
|
|
class GenericLexer {
|
|
public:
|
|
explicit GenericLexer(const StringView& input);
|
|
virtual ~GenericLexer();
|
|
|
|
using Condition = Function<bool(char)>;
|
|
|
|
size_t tell() const { return m_index; }
|
|
size_t tell_remaining() const { return m_input.length() - m_index; }
|
|
|
|
bool is_eof() const;
|
|
|
|
char peek(size_t offset = 0) const;
|
|
|
|
bool next_is(char) const;
|
|
bool next_is(StringView) const;
|
|
bool next_is(const char*) const;
|
|
bool next_is(Condition) const;
|
|
|
|
char consume();
|
|
bool consume_specific(char);
|
|
bool consume_specific(StringView);
|
|
bool consume_specific(const char*);
|
|
StringView consume(size_t count);
|
|
StringView consume_all();
|
|
StringView consume_line();
|
|
StringView consume_while(Condition);
|
|
StringView consume_until(char);
|
|
StringView consume_until(const char*);
|
|
StringView consume_until(Condition);
|
|
// FIXME: provide an escape character
|
|
StringView consume_quoted_string();
|
|
|
|
void ignore(size_t count = 1);
|
|
void ignore_while(Condition);
|
|
void ignore_until(char);
|
|
void ignore_until(const char*);
|
|
void ignore_until(Condition);
|
|
|
|
protected:
|
|
StringView m_input;
|
|
size_t m_index { 0 };
|
|
};
|
|
|
|
constexpr auto is_any_of(const StringView& values)
|
|
{
|
|
return [values](auto c) { return values.contains(c); };
|
|
}
|
|
|
|
// ctype adaptors
|
|
// FIXME: maybe put them in an another file?
|
|
bool is_alpha(char);
|
|
bool is_alphanum(char);
|
|
bool is_control(char);
|
|
bool is_digit(char);
|
|
bool is_graphic(char);
|
|
bool is_hex_digit(char);
|
|
bool is_lowercase(char);
|
|
bool is_path_separator(char);
|
|
bool is_printable(char);
|
|
bool is_punctuation(char);
|
|
bool is_quote(char);
|
|
bool is_uppercase(char);
|
|
bool is_whitespace(char);
|
|
|
|
}
|
|
|
|
using AK::GenericLexer;
|
|
|
|
using AK::is_alpha;
|
|
using AK::is_alphanum;
|
|
using AK::is_any_of;
|
|
using AK::is_control;
|
|
using AK::is_digit;
|
|
using AK::is_graphic;
|
|
using AK::is_hex_digit;
|
|
using AK::is_lowercase;
|
|
using AK::is_path_separator;
|
|
using AK::is_printable;
|
|
using AK::is_punctuation;
|
|
using AK::is_quote;
|
|
using AK::is_uppercase;
|
|
using AK::is_whitespace;
|