kepka/Telegram/SourceFiles/codegen/style/parsed_file.h

147 lines
3.7 KiB
C++

/*
This file is part of Telegram Desktop,
the official desktop version of Telegram messaging app, see https://telegram.org
Telegram Desktop is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
It is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
In addition, as a special exception, the copyright holders give permission
to link the code of portions of this program with the OpenSSL library.
Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
Copyright (c) 2014-2016 John Preston, https://desktop.telegram.org
*/
#pragma once
#include <memory>
#include <QtCore/QString>
#include <QtCore/QFileInfo>
#include "codegen/common/basic_tokenized_file.h"
#include "codegen/style/options.h"
#include "codegen/style/structure.h"
namespace codegen {
namespace style {
// Parses an input file to the internal struct.
class ParsedFile {
public:
ParsedFile(const Options &options);
ParsedFile(const ParsedFile &other) = delete;
ParsedFile &operator=(const ParsedFile &other) = delete;
struct Token {
enum class Type {
Invalid,
Using, // value: file path
DefineStructStart, // value: struct name
DefineStructField, // value: struct field name
StructFieldType, // value: struct field type name
DefineStructEnd,
DefineVariable, // value: variable name
StructStart, // value: struct name
StructParent, // value: variable parent name
VariableField, // value: variable field name
StructEnd,
Int,
Double,
Pixels,
String,
Color,
Point,
Sprite,
Size,
Transition,
Cursor,
Align,
Margins,
Font,
};
Type type;
QString value;
explicit operator bool() const {
return type != Type::Invalid;
}
};
bool read();
const structure::Module &data() const {
return result_;
}
private:
bool failed() const {
return failed_ || file_.failed();
}
// Log error to std::cerr with 'code' at the current position in file.
common::LogStream logError(int code) {
failed_ = true;
return file_.logError(code);
}
common::LogStream logErrorUnexpectedToken(const std::string &expected = std::string()) {
failed_ = true;
return file_.logErrorUnexpectedToken(expected);
}
Token readToken();
// State value defines what are we waiting next.
enum class State {
Default, // [ using | struct name | variable name | end ]
StructStarted, // [ struct field name | struct end ]
StructFieldName, // [ struct field type ]
Variable, // [ struct name | variable value ]
VariableParents, // [ variable parent name | variable start ]
VariableStarted, // [ variable field name | variable end]
VariableChild, // [ variable child value ]
};
// Helper methods for readToken() being in specific State.
Token readInDefault();
Token readInStructStarted();
Token readInStructFieldName();
Token readInVariable();
Token readInVariableParents();
Token readInVariableStarted();
Token readInVariableChild();
Token readNumericToken();
Token readValueToken();
Token readColorToken();
Token readPointToken();
Token readSpriteToken();
Token readSizeToken();
Token readTransitionToken();
Token readCursorToken();
Token readAlignToken();
Token readMarginsToken();
Token readFontToken();
common::BasicTokenizedFile file_;
Options options_;
bool failed_ = false;
State state_ = State::Default;
structure::Module result_;
};
} // namespace style
} // namespace codegen