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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Build Suite.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
****************************************************************************/
#ifndef QBS_VALUE_H
#define QBS_VALUE_H
#include "filecontext.h"
#include "item.h"
#include <tools/codelocation.h>
#include <QVariant>
namespace qbs {
namespace Internal {
class ValueHandler;
class Value
{
public:
enum Type
{
JSSourceValueType,
ItemValueType,
VariantValueType,
BuiltinValueType
};
Value(Type t);
virtual ~Value();
Type type() const { return m_type; }
virtual void apply(ValueHandler *) = 0;
virtual CodeLocation location() const { return CodeLocation(); }
private:
Type m_type;
};
class ValueHandler
{
public:
virtual void handle(JSSourceValue *value) = 0;
virtual void handle(ItemValue *value) = 0;
virtual void handle(VariantValue *value) = 0;
virtual void handle(BuiltinValue *value) = 0;
};
class JSSourceValue : public Value
{
friend class ItemReaderASTVisitor;
JSSourceValue();
enum Flag
{
NoFlags = 0x00,
SourceUsesBase = 0x01,
SourceUsesOuter = 0x02,
HasFunctionForm = 0x04
};
Q_DECLARE_FLAGS(Flags, Flag)
public:
static JSSourceValuePtr create();
~JSSourceValue();
void apply(ValueHandler *handler) { handler->handle(this); }
void setSourceCode(const QStringRef &sourceCode) { m_sourceCode = sourceCode; }
const QStringRef &sourceCode() const { return m_sourceCode; }
QString sourceCodeForEvaluation() const;
void setLocation(int line, int column);
int line() const { return m_line; }
int column() const { return m_column; }
CodeLocation location() const;
void setFile(const FileContextPtr &file) { m_file = file; }
const FileContextPtr &file() const { return m_file; }
bool sourceUsesBase() const { return m_flags.testFlag(SourceUsesBase); }
bool sourceUsesOuter() const { return m_flags.testFlag(SourceUsesOuter); }
bool hasFunctionForm() const { return m_flags.testFlag(HasFunctionForm); }
void setHasFunctionForm(bool b);
const JSSourceValuePtr &baseValue() const { return m_baseValue; }
void setBaseValue(const JSSourceValuePtr &v) { m_baseValue = v; }
struct Alternative
{
QString condition;
JSSourceValuePtr value;
};
const QList<Alternative> &alternatives() const { return m_alternatives; }
void setAlternatives(const QList<Alternative> &alternatives) { m_alternatives = alternatives; }
void addAlternative(const Alternative &alternative) { m_alternatives.append(alternative); }
private:
QStringRef m_sourceCode;
int m_line;
int m_column;
FileContextPtr m_file;
Flags m_flags;
JSSourceValuePtr m_baseValue;
QList<Alternative> m_alternatives;
};
class Item;
class ItemValue : public Value
{
ItemValue(Item *item);
public:
static ItemValuePtr create(Item *item = 0);
~ItemValue();
void apply(ValueHandler *handler) { handler->handle(this); }
Item *item() const;
void setItem(Item *ptr);
private:
Item *m_item;
};
inline Item *ItemValue::item() const
{
return m_item;
}
inline void ItemValue::setItem(Item *ptr)
{
m_item = ptr;
}
class VariantValue : public Value
{
VariantValue(const QVariant &v);
public:
static VariantValuePtr create(const QVariant &v = QVariant());
void apply(ValueHandler *handler) { handler->handle(this); }
void setValue(const QVariant &v) { m_value = v; }
const QVariant &value() const { return m_value; }
private:
QVariant m_value;
};
} // namespace Internal
} // namespace qbs
#endif // QBS_VALUE_H
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