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** Copyright (C) 2019 The Qt Company Ltd.
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** This file is part of the tools applications of the Qt Toolkit.
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** Alternatively, this file may be used under the terms of the GNU
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** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
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#ifndef PARAMETERS_H
#define PARAMETERS_H

#include <QtCore/qlist.h>
#include <QtCore/qregularexpression.h>
#include <QtCore/qset.h>

QT_BEGIN_NAMESPACE

class Location;
class Tokenizer;
class CodeChunk;

class Parameter
{
public:
    Parameter() {}
    Parameter(const QString &type, const QString &name = QString(),
              const QString &defaultValue = QString())
        : type_(type), name_(name), defaultValue_(defaultValue)
    {
    }

    void setName(const QString &name) { name_ = name; }
    bool hasType() const { return !type_.isEmpty(); }
    const QString &type() const { return type_; }
    const QString &name() const { return name_; }
    const QString &defaultValue() const { return defaultValue_; }
    void setDefaultValue(const QString &t) { defaultValue_ = t; }

    void set(const QString &type, const QString &name, const QString &defaultValue = QString())
    {
        type_ = type;
        name_ = name;
        defaultValue_ = defaultValue;
    }

    QString signature(bool includeValue = false) const;

    const QString &canonicalType() const { return canonicalType_; }
    void setCanonicalType(const QString &t) { canonicalType_ = t; }

public:
    QString canonicalType_ {};
    QString type_;
    QString name_;
    QString defaultValue_;
};

typedef QList<Parameter> ParameterVector;

class Parameters
{
public:
    Parameters();
    Parameters(const QString &signature);

    void clear()
    {
        parameters_.clear();
        privateSignal_ = false;
        valid_ = true;
    }
    const ParameterVector &parameters() const { return parameters_; }
    bool isPrivateSignal() const { return privateSignal_; }
    bool isEmpty() const { return parameters_.isEmpty(); }
    bool isValid() const { return valid_; }
    int count() const { return parameters_.size(); }
    void reserve(int count) { parameters_.reserve(count); }
    const Parameter &at(int i) const { return parameters_.at(i); }
    Parameter &last() { return parameters_.last(); }
    const Parameter &last() const { return parameters_.last(); }
    inline Parameter &operator[](int index) { return parameters_[index]; }
    void append(const QString &type, const QString &name, const QString &value);
    void append(const QString &type, const QString &name) { append(type, name, QString()); }
    void append(const QString &type) { append(type, QString(), QString()); }
    void pop_back() { parameters_.pop_back(); }
    void setPrivateSignal() { privateSignal_ = true; }
    QString signature(bool includeValues = false) const;
    QString rawSignature(bool names = false, bool values = false) const;
    void set(const QString &signature);
    QSet<QString> getNames() const;
    QString generateTypeList() const;
    QString generateTypeAndNameList() const;
    bool match(const Parameters &parameters) const;

private:
    void readToken();
    QString lexeme();
    QString previousLexeme();
    bool match(int target);
    void matchTemplateAngles(CodeChunk &type);
    bool matchTypeAndName(CodeChunk &type, QString &name, bool qProp = false);
    bool matchParameter();
    bool parse(const QString &signature);

private:
    static QRegularExpression varComment_;

    bool valid_;
    bool privateSignal_;
    int tok_;
    Tokenizer *tokenizer_;
    ParameterVector parameters_;
};

QT_END_NAMESPACE

#endif
